# Patent

## Title
Wire retaining ring for a welding system

## Abstract

The subject embodiments are directed to a wire packaging system for a coil of welding wire defining a bore, the system including a container adapted to receive the coil therein, the container having a base; a wire retainer having a base portion adapted to overlie the coil, the base portion defining an aperture adapted to overlie the bore of the coil; the base portion including a first support and a second support located on opposite sides of the aperture; each support extending upward from the base portion; a hold down assembly including a restraint supported near the base of the container and extending upward through the aperture to attach to a hold down member, the hold down member having first and second ends engageable with the first and second supports and the restraint adapted to apply a compressive force to the supports via attachment of the restraint to the hold down member.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of prior U.S. application Ser. No. 13/429,490, filed on Mar. 26, 2012, which is a continuation-in-part of prior U.S. application Ser. No. 13/302,491, filed on Nov. 22, 2011. This application additionally claims the benefit of U.S. Provisional Application No. 61/679,401, filed on Aug. 3, 2012. The disclosures of each of these applications are incorporated by reference in their entireties herein.


TECHNICAL FIELD
The present disclosure is related to welding systems, and more particularly, to a wire retaining ring packaging a coil of welding wire used in a welding system.
BACKGROUND OF THE INVENTION
Wire is frequently packaged and stored in containers for delivery to an end user. In particular, wire such as that used for welding or soldering, is wound in coils as it is packaged in drums or containers. Once shipped to the end user, the wire is dispensed from the container for use in any number of processes. In many instances, the wire is left in the container and metered out as needed without removing the entire coil. To facilitate easy removal, suppliers frequently incorporate a twist in the wire as it is fed into the drum. This helps the wire emerge without rotating as it is drawn back out.
Dispensing wire from coils, however, presents the problem of unwinding the wire smoothly without intertwining or forming knots, which can lead to defects or breaks in the wire resulting in costly downtime. The wire may tangle in any number of ways. For example, multiple loops of wire may lift off from the top of the coil at the same time entangling the wire as it drawn from the drum. In other instances, loops of wire may unravel and fall behind the coil causing the wire to intertwine. Systems and methods are needed to overcome these and other deficiencies.
SUMMARY
In an embodiment, a system for packaging and unwinding a coil of welding wire is employed to allow an uninterrupted flow of the welding wire from one container to another container. The coil of welding wire includes a coil top and a coil bottom, wherein a feeding end of the welding wire extends from the coil top and a trailing end of the wire extends from the coil bottom, the trailing end of the one container being joinable to the feeding end of the another container. The system includes at least one container including at least one vertically extending side wall, a closed bottom, a top opening for removing the welding wire and a wire coil receiving cavity within the outer packaging for receiving the wire coil, the feeding end and the trailing end being positionable near the top opening. A wire retaining ring is disposed on the coil top in the at least one container. The wire retaining ring includes a discontinuous inner ring that has an inner radius and an inner gap and a discontinuous outer ring that has an outer radius. The radius of the outer ring is greater than the inner radius, and the outer ring is substantially concentrically disposed with regard to the inner ring. At least two spokes extend radially from the inner ring to the outer ring, and the spokes intersect the outer ring to create a plurality of segments along a circumference of the outer ring. The wire ring also includes a wire guide extending radially from the inner ring to the outer ring and having a first portion and a second portion. The wire guide includes a slot having a slot width, the slot separating the first portion of the guide from the second portion of the guide and defining a discontinuity in the inner ring and a discontinuity in the outer ring. The slot is disposed in a location in place of one of the plurality of spokes. The trailing end of the first coil of wire is positioned within the slot.
In another embodiment, a wire retaining ring for a coil of welding wire, the coil includes a coil top and a coil bottom, a feeding end of the welding wire extends from the coil top and a trailing end of the wire extends from the coil bottom, the trailing end of the coil of wire being joinable to the feeding end of another coil of wire includes a discontinuous inner ring that has an inner radius and an inner gap and a discontinuous outer ring that has an outer radius which is greater than the inner radius, the outer ring being substantially concentrically disposed with regard to the inner ring. The wire retaining ring also includes at least two spokes that each extend radially from the inner ring to the outer ring, the spokes intersect the outer ring to create a plurality of segments along a circumference of the outer ring. Additionally, the wire retaining ring includes a wire guide extending radially from the inner ring to the outer ring and having a first portion and a second portion, where the wire guide includes a slot having a slot width and separating the first portion of the guide from the second portion of the guide. The slot defines a discontinuity in the inner ring and a discontinuity in the outer ring and is disposed in a location in place of one of the plurality of spokes.
In yet another embodiment, an endless wire payoff system for coiled wire includes a first container that contains a first coil of wire that has a feeding end and a trailing end, the feeding end is fed through the wire feeder for a welding operation and a second container that contains a second coil of wire that has a feeding end and trailing end, the feeding end of the second coil is connected to the trailing end of the first coil. The system also includes a first wire retaining ring disposed on top of the first coil and a second wire retaining ring disposed on top of the second coil. Each wire retaining ring includes a discontinuous inner ring that has an inner radius and an inner gap and a discontinuous outer ring that has an outer radius, which is greater than the inner radius, the outer ring being substantially concentrically disposed with regard to the inner ring. The wire retaining ring also includes at least two spokes that each extend radially from the inner ring to the outer ring, the spokes intersecting the outer ring to create a plurality of segments along a circumference of the outer ring. Further, the wire retaining ring includes a wire guide extending radially from the inner ring to the outer ring and having a first portion and a second portion, where the wire guide includes a slot having a slot width and separating the first portion of the guide from the second portion of the guide, the slot defining a discontinuity in the inner ring and a discontinuity in the outer ring and disposed in a location in place of one of the plurality of spokes. The trailing end of the first coil of wire is positioned within the slot.
In still another embodiment, the present invention generally provides a wire packaging system for a coil of welding wire defining a bore, the system including a container adapted to receive the coil therein, the container having a base; a wire retainer having a base portion adapted to overlie the coil, the base portion defining an aperture adapted to overlie the bore of the coil; the base portion including a first support and a second support located on opposite sides of the aperture; each support extending upward from the base portion; a hold down assembly including a restraint supported near the base of the container and extending upward through the aperture to attach to a hold down member, the hold down member having first and second ends engageable with the first and second supports and the restraint adapted to apply a compressive force to the supports via attachment of the restraint to the hold down member.
In still another embodiment, the present invention further provides a wire retainer for a coil of welding wire received in a container, the wire retainer including a base portion defining a central aperture, the base portion extending radially outward from a central axis and including an upstanding outer peripheral wall; a frusto-conical wire guide extending upward from the base portion about the aperture; and wherein the base portion defines plural view openings equally spaced from each other about the base, the view openings extending along radial lines radiating outward from a center of the base portion between the wire guide and the outer peripheral wall.
In still another embodiment, the present invention also provides a method of packaging welding wire in a coil, the method including providing a container having a base; placing a coil of welding wire having a bore within the container; providing a wire retainer including a base portion defining a central aperture and a pair of supports extending upward from the base portion on opposite sides of the aperture, the each support defining a receiver located above the aperture; placing the wire retainer on the coil and locating the aperture at least partially over the bore; providing a hold down assembly including a hold down member and a restraint; attaching the restraint to the base of the container and pulling a free end of the restraint upward from the base, through the bore and aperture; attaching the free end of the restraint to the hold down member; locating a first end of the hold down member within the receiver of one of the supports and locating a second end of the hold down member within the receiver of the other of the supports; attaching the restraint to the hold down member and applying a compressive force to the hold down member by reducing a length of the restraint.
This summary is provided to introduce a selection of concepts in a simplified form that are further described herein. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Furthermore, the claimed subject matter is not limited to implementations that solve any or all disadvantages noted in any part of this disclosure.



BRIEF DESCRIPTION OF THE DRAWINGS
Reference is made to the accompanying drawings in which particular embodiments and further benefits of the invention are illustrated as described in more detail in the description below, in which:
FIG. 1 is a perspective view of an endless bulk wire system that includes wire retaining rings to locate a trailing end of wire from a coil into a location that mitigates entanglement hazards;
FIG. 2 is a top plan view of a wire coil with a wire retaining ring;
FIG. 3 is a front elevation view of a wire coil with a first embodiment of the wire retaining ring;
FIG. 4 is a top perspective view of the first embodiment of the wire retaining ring;
FIG. 5 is a top perspective view of a second embodiment of the wire retaining ring;
FIG. 6 is a front elevation view of the second embodiment of the wire retaining ring;
FIG. 7 is a top perspective view of a third embodiment of a wire retaining ring;
FIG. 8 is a top perspective view of an embodiment of a wire retaining member;
FIG. 9 is a top perspective view of another embodiment of a wire retaining ring;
FIG. 10 is a perspective view of the wire retaining ring of FIG. 9 within a wire container;
FIG. 11 is a top plan view of a wire retaining ring of FIG. 8 within a wire container;
FIG. 12 is a top plan view of a wire retaining ring according to another embodiment within a wire container;
FIG. 13 is a top perspective view of the wire retaining ring shown in FIG. 12; and
FIG. 14 is a sectional side elevational view showing assembly of a wire packaging system of the present invention using the wire retaining ring shown in FIG. 12 and a hold down assembly.



DETAILED DESCRIPTION
Referring now to the figures, several embodiments or implementations of the present invention are hereinafter described in conjunction with the drawings, wherein like reference numerals are used to refer to like elements throughout. The subject embodiments are directed to a wire retaining ring that is employed to move a trailing end out of the center of a wire coil thereby mitigating the potential for entanglement of the trailing end with a feeding end. For this purpose, the wire retaining ring is disposed on top of the wire coil and includes a slot extending radially outward from the center of the ring to the outer periphery of the wire coil to position the trailing end. Although illustrated and described hereinafter in the context of various exemplary welding systems, the invention is not limited to the illustrated examples.
More particularly, the subject embodiments relate to an endless bulk wire container arrangement, wherein a first container contains a coil of wire that includes a coil top and a coil bottom, wherein a feeding end of the coil is drawn from the coil top from an opening in the center of the coil. A trailing end from the coil is also drawn from the center of the coil thereby causing a potential tangling hazard between the feeding end and the trailing end during a wire feeding operation. The subject embodiments are directed to a wire retaining ring that is employed to move the trailing end out of the center of the wire coil thereby mitigating the potential for entanglement between wire ends. For this purpose, the wire retaining ring is disposed on top of a wire coil and includes a slot extending radially outward from the center of the ring to the outer periphery of the wire coil. In this manner, when a container is opened, the trailing end can be manually positioned radially outward in the slot formed in the retaining ring into a corner of the container where it poses no entangling hazard. The trailing end may be connected to a coil within a different container to provide an endless supply of wire to a welder. This arrangement can be implemented repeatedly as suitable to effectively provide an endless supply of wire to a welding system.
FIG. 1 illustrates a coil system 100 that facilitates an endless wire supply for delivery to a welding system, such as an electric or arc welder. The subject embodiments relate to a plurality of wire coils which are interconnected to facilitate delivery of weld wire to a welding system and mitigating tangling or other encumbrance that may occur as wire is paid out from the coil. A first container 102 is adjacent a second container 104, wherein the first container 102 houses a wire coil 106 and the second container 104 houses a wire coil 108. The coils 106, 108 contain a quantity of welding wire which coil to form a hollow body with a ring-shaped cross section. In FIG. 1, the containers 102, 104 have a plurality of walls disposed in the interior of the container to mitigate coil movement during shipping or other transport. The first wire coil 106 has a feeding end 118 which is paid out to a weld system or other suitable receiving component. A trailing end 122 is welded, fused, or otherwise coupled to a feeding end 124 of the second coil at a location 142.
First container 102 and second container 104 are positioned side-by-side whereby the wire is fed from container 102 and then automatically changed over to feed wire from container 104. After the wire in container 102 is exhausted, the wire in container 104 is then pulled from the second container which is ultimately moved in the position of the first container and the vacant location of the second container is filled by a subsequent supply of coil wire. The two wires are connected (e.g., via a standard butt weld) to create an endless welding wire. The term “endless” as used herein means that there are at least two containers at an installation with the trailing end of the wire in the first container 102 connected to the feeding end 124 of the second coil 108 of wire in the second container 104. Similarly, the trailing end 126 of the second coil 108 of wire can subsequently be connected to another container and so on.
The containers can be circular drums, square cardboard containers with one or more vertical walls, or any container suitable for storage and payout of welding wire. The containers shown in FIG. 1 include a supply of welding wire in the form of coils 106, 108 having wire with feeding ends 118, 124 and trailing or trailing ends 122, 126, respectively. When transported, the trailing end of the coil is loose and the feeding end is pulled from the coil until the trailing end at the bottom of the coil is reached. At that time, the trailing end is connected to the feeding end of the next coil so there is an automatic change over from one coil to the next. To illustrate the disposition of the trailing end of the coil when the container is shipped, trailing end 122 of coil 106 is illustrated as originating from the bottom portion 152 of coil 106. Thus, when coil 106 is exhausted, the last portion of the coil pulled from the container is trailing or trailing end 122. This is the end that is ultimately connected (e.g., butt welded) to a feeding end of the next coil when the coil 106 is exhausted and replaced by a changeover to coil 108 shifted to the position of the first (empty) container 102.
The wire coil 106 further includes the feeding end 118 extending between coil 106 near top 150; and the trailing end 122 extending from wire coil 106 from near coil bottom 154. The feeding end 118 is fed from the center of the coil to a welding operation. The trailing end 122 is positioned such that it extends from near bottom across the bottom of the coil and then up wall 172, and toward the center of the coil 106. Similarly, the wire coil 108 further includes the feeding end 124 that is drawn from the top 152 from the center of the coil 106. The trailing end 126 of the second coil is positioned from the bottom 154 of the coil 108 to be connected to a subsequent coil placed once the first coil 106 has been depleted. Wire coils 106, 108 can be any coil known in the art wound by any known winding techniques in the art and can include a coil bottom positioned on a package bottom and an oppositely facing coil top. Wire coils 106, 108 further include a cylindrical outer surface and a cylindrical inner surface, which extend between coil bottom and coil top. Due to the method in which the wire welding is wound into containers 102, 104, the individual convolutions of wire 106, 108 can have a natural cast which produces a radial outward force in the coil and an upward springing force in the coil. The upward springing force is maintained and controlled by a wire retaining ring 130, which will be discussed in greater detail below. The radial outward force of the coils 106, 108 is controlled, at least in part, by the walls of containers 102, 104.
The interior of containers 102, 104 are configured to receive the wire coils 106, 108 respectively. In one embodiment, the containers 102, 104 may be drum-like having a circular cross-section. Alternative embodiments incorporate cubical containers having four side walls 156 connected together by a floor panel 160. Inserts may be added that create a polygonal boundary inscribing the outer perimeter of the coiled wire 106, 108. In particular, corner inserts 158 may be placed vertically within the container 102, 104 creating an octagonal boundary. While not shown, containers 102, 104 can also include inner packaging components, such as a vertically extending liner, vapor barriers, hold-down mechanisms, or other welding wire packaging components. Additionally, containers 102, 104 may be covered by a container lid, not shown, constructed to prevent debris and other contaminants from entering each container.
Wire retaining rings 130 are disposed on the top of the coil within the containers 102, 104 respectively. As illustrated in FIG. 1, the wire retaining ring 130 includes three concentrically disposed discontinuous rings: an inner ring 162, an intermediate ring 164 and an outer ring 166. The inner ring is coupled to the intermediate ring and the outer ring via a plurality of spokes 168 which are disposed at arc intervals preferably regularly spaced around the inner ring, as illustrated. The spokes 168 can have upward extensions both at the inner ring 162 and proximate the outer ring 166. Alternatively, or in addition, the spokes 168 may extend beyond the radius of the outer ring 166 for abutment against the inside wall (e.g., within corners) of containers 102, 104. The wire retaining ring 130 contains a slot 134 which, as shown in FIG. 2, is defined by a first slot rail 136 and a second slot rail 138. The slot 134 can be located in place of a spoke 168 for structural consistency and is illustrated in FIGS. 2 and 4 and extends from the inner ring 162 to the outer ring 166 wherein the inner ring includes an inner gap 222 and intermediate ring includes an intermediate gap 224 to accommodate a continuous slot. In one embodiment, the slot 134 is a single slot that extends from the inner ring 162 to the outer ring 166. As best described in FIG. 4, the slot is comprised of the first slot rail 136 and a second slot rail 138, which extends from the inner ring 162 to the outer ring 166.
As shown in FIG. 4, a connecting element 412 is disposed at the outer ring 166, which includes a first vertical rail 414 that connects the first slot rail 136 to a first supplementary rail 214. A second vertical rail 416 within the connecting element 412 connects the second slot rail 138 to a second supplementary rail 216. In such configuration, the trailing end 122 can be moved away from the center of the coil similar to the first embodiment wherein a redundant slot arrangement is employed. Regardless of the slot arrangement, however, substantially any configuration is contemplated which moves a trailing end away from the payout location in the center of the coil to ensure that no entanglement incurs and to allow for a simplistic connection from the trailing end 122 to the feeding end of a different coil (e.g., feeding end 124). In this manner, the trailing end 122 from the first wire coil 106 can be disposed and held at a location which is distal from the center of the wire coil 106. While the feeding end of the wire 118 is paid out to a welder or other receiving component, the trailing end wire 122 will not interfere with such payout as to avoid entanglement or other negative consequence of interference between wire ends. While connecting elements 412 are illustrated as extend beyond the periphery of outer ring 166, there is no need to limit the design as such as connecting elements may terminate at the peripheral edge or interiorly.
The wire retaining ring 130 can be made from a wide variety of materials, including, but not limited to a steel, an aluminum, a copper, a nickel, a stainless steel, and a brass. Alternatively or in addition, components within the wire retaining ring 130 can include thermoplastics, thermosets, terpolymers, and/or polymers. Polymers of monoolefins and diolefins, for example would include polypropylene, polyisobutylene, polybutene-1, polymethylpentene-1, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for instance of cyclopentene or norbornene, polyethylene (which optionally can be crosslinked), for example high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) may be used. Mixtures of these polymers, for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP/HDPE), may also be used. Also useful are copolymers of monoolefins and diolefins with each other or with other vinyl monomers, such as, for example, ethylene/propylene, LLDPE and its mixtures with LDPE, propylene/butene-1, ethylene/hexene, ethylene/ethyl pentene, ethylene/heptene, ethylene/octene, propylene/butadiene, isobutylene/isoprene, ethylene/alkyl acrylates, ethylene/alkyl methacrylates, ethylene/vinyl acetate (EVA) or ethylene/acrylic acid copolymers (EAA) and their salts (ionomers) and terpolymers of ethylene with propylene and a diene, such as hexadiene, dicyclopentadiene or ethylidene-norbornene; as well as mixtures of such copolymers and their mixtures with polymers mentioned above, for example polypropylene/ethylene-propylene copolymers, LDPE/EVA, LDPE/EAA, LLDPE/EVA and LLDPE/EAA.
Thermoplastic polymers may also include styrenic polymers, such as polystyrene, poly-(p-methylstyrene), poly(.alpha.-methylstyrene), copolymers of styrene, p-methylstyrene or alpha-methylstyrene with dienes or acrylic derivatives, such as, for example, styrene/butadiene, styrene/acrylonitrile, styrene/alkyl methacrylate, styrene/maleic anhydride, styrene/butadiene/ethyl acrylate, styrene/acrylonitrile/methacrylate; mixtures of high impact strength from styrene copolymers and another polymer, such as, for example, from a polyacrylate, a diene polymer or an ethylene/propylene/diene terpolymer; and block copolymers of styrene, such as, for example, styrene/butadiene/styrene, styrene/isoprene/styrene, styrene/ethylene/butylene/styrene or styrene/ethylene/propylene/styrene. Styrenic polymers may additionally or alternatively include graft copolymers of styrene or alpha-methylstyrene such as, for example, styrene on polybutadiene, styrene on polybutadiene-styrene or polybutadiene-acrylonitrile; styrene and acrylonitrile (or methacrylonitrile) on polybutadiene; styrene and maleic anhydride or maleimide on polybutadiene; styrene, acrylonitrile and maleic anhydride or maleimide on polybutadiene; styrene, acrylonitrile and methyl methacrylate on polybutadiene, styrene and alkyl acrylates or methacrylates on polybutadiene, styrene and acrylonitrile on ethylene/propylene/diene terpolymers, styrene and acrylonitrile on polyacrylates or polymethacrylates, styrene and acrylonitrile on acrylate/butadiene copolymers, as well as mixtures of the styrenic copolymers indicated above.
Nitrile polymers are also useful. These include homopolymers and copolymers of acrylonitrile and its analogs such as methacrylonitrile, such as polyacrylonitrile, acrylonitrile/butadiene polymers, acrylonitrile/alkyl acrylate polymers, acrylonitrile/alkyl methacrylate/butadiene polymers, acrylonitrile/butadiene/styrene (ABS), and ABS which includes methacrylonitrile.
Polymers based on acrylic acids, such as acrylic acid, methacrylic acid, methyl methacrylate acid and ethacrylic acid and esters thereof may also be used. Such polymers include polymethylmethacrylate, and ABS-type graft copolymers wherein all or part of the acrylonitrile-type monomer has been replaced by an acrylic acid ester or an acrylic acid amide. Polymers including other acrylic-type monomers, such as acrolein, methacrolein, acrylamide and methacrylamide may also be used.
Halogen-containing polymers may also be useful. These include resins such as polychloroprene, epichlorohydrin homopolymers and copolymers, polyvinyl chloride, polyvinyl bromide, polyvinyl fluoride, polyvinylidene chloride, chlorinated polyethylene, chlorinated polypropylene, fluorinated polyvinylidene, brominated polyethylene, chlorinated rubber, vinyl chloride-vinylacetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride propylene copolymer, vinyl chloride-styrene copolymer, vinyl chloride-isobutylene copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-styrene-maleic anhydride tercopolymer, vinyl chloride-styrene-acrylonitrile copolymer, vinyl chloride-isoprene copolymer, vinyl chloride-chlorinated propylene copolymer, vinyl chloride-vinylidene chloride-vinyl acetate tercopolymer, vinyl chloride-acrylic acid ester copolymers, vinyl chloride-maleic acid ester copolymers, vinyl chloride-methacrylic acid ester copolymers, vinyl chloride-acrylonitrile copolymer and internally plasticized polyvinyl chloride.
Other useful thermoplastic polymers include homopolymers and copolymers of cyclic ethers, such as polyalkylene glycols, polyethylene oxide, polypropylene oxide or copolymers thereof with bis-glycidyl ethers; polyacetals, such as polyoxymethylene and those polyoxymethylene which contain ethylene oxide as a comonomer; polyacetals modified with thermoplastic polyurethanes, acrylates or methacrylonitrile containing ABS; polyphenylene oxides and sulfides, and mixtures of polyphenylene oxides with polystyrene or polyamides; polycarbonates and polyester-carbonates; polysulfones, polyethersulfones and polyetherketones; and polyesters which are derived from dicarboxylic acid and diols and/or from hydroxycarboxylic acids or the corresponding lactones, such as polyethylene terephthalate, polybutylene terephthalate, poly-1,4-dimethyliol-cyclohexane terephthalate, poly-[2,2,4-(4-hydroxyphenyl)-propane]terephthalate and polyhydroxybenzoates as well as block copolyetheresters derived from polyethers having hydroxyl end groups.
Polyamides and copolyamides which are derived from diamines and dicarboxylic acids and/or from aminocarboxylic acids or the corresponding lactams, such as polyamide-4, polyamide-6, polyamide-6/6, polyamide-6/10, polyamide-6/9, polyamide-6/12, polyamide-4/6, polyamide-11, polyamide-12, aromatic polyamides obtained by condensation of m-xylene, diamine and adipic acid; polyamides prepared from hexamethylene diamine and isophthalic and/or terephthalic acid and optionally an elastomer as modifier, for example, poly-2,4,4-trimethylhexamethylene terephthalamide or poly-m-phenylene isophthalamide may be useful. Further copolymers of the aforementioned polyamides with poly-olefins, olefin copolymers, ionomers or chemically bonded or grafted elastomers; or with polyethers, such as for instance, with polyethylene glycol, polypropylene glycol or polytetramethylene glycols, and polyamides or copolyamides modified with EPDM or ABS may be used.
Regardless of material, it will be appreciated that by increasing thickness and/or substituting materials of construction of the rings 162, 164, 166, and spokes 168, the rigidity of wire retaining ring 130 can be varied to minimize deflection or distortion of the ring body during the operation of the unwinding of the welding wire from the wire coil. This variance in thickness of components is also commensurate with a variable weight, which can be used with different welding wire types and sizes. For example, the wire retaining ring 130 can have a weight range which varies relative to gauge of the welding wire, twist on the welding wire, welding wire material, and other relevant factors. In an embodiment, the wire retaining ring 130 has a weight of between 1 and 7 pounds, which can be calibrated for use with different wires, wherein different models of wire retaining ring have different weights as appropriate. For example, the wire retaining ring 130 may have a 5 pound total weight when used with a heavier gauge weld wire, whereas the wire retaining ring 130 has a 2 pound weight when used with a relatively finer gauge weld wire. The addition or elimination of spokes, and/or variation in material thickness can be employed to obtain desired weight results. In this manner, the wire retaining ring 130 will not interfere with the payout of the wire from the coils 106, 108 by under compressing or over-compressing the coil.
FIG. 2 illustrates a top plan view of the wire retaining ring 130 to illustrate the configuration of the inner ring 162, intermediate ring 164 and outer ring 166. As depicted, the discontinuous rings are concentrically disposed relative to one another and are coupled together via a plurality of spokes 168. It is to be appreciated that although only a single intermediate ring 164 is depicted, substantially any number of intermediate rings can be employed, including the elimination of an intermediate ring as suitable for each application. As shown, the trailing end 122 is illustrated as exiting the slot 134 and is disposed at a location distal from the inner ring. The feeding end 118 is paid out from the coil 106 through the inner ring into a receiving component such as a weld system.
FIG. 3 illustrates an elevation of the horizontal planes defined by rings within the wire retaining ring 130. The inner ring 162 is shown as elevated in relation to the intermediate ring 164 and outer ring 166, to allow flexibility for the payout of the feeding end 118 from the coil 106. The height of the inner ring 162 relative to the intermediate and outer rings can vary and be equal to that of the intermediate and outer rings or lower than the intermediate and outer rings in various applications. The elevation of the intermediate ring 164 to the outer ring 166 is substantially equivalent. As the elevation of the inner ring 162 is higher than the intermediate ring 164 and the outer ring 166, the slot 134 can be upwardly angled toward the inner ring. This configuration can facilitate payout of wire through the inner ring in an upward direction from the coil and out of the respective container.
FIG. 5 is a top perspective view of a second embodiment of a wire retaining ring, which shows wire retaining ring 500. The wire retaining ring 500 includes a discontinuous inner ring 562, a discontinuous intermediate ring 564 and an outer ring 566, which are axially concentrically aligned to one another. The inner ring 562 has a radius A, the intermediate ring has a radius B, and the outer ring has a radius C, wherein radius C is greater than radius B and radius B is greater than radius A. In addition, an elevation of the horizontal plan defined by inner ring is greater than an elevation of the outer ring to accommodate wire drawn from the center of the inner ring 562 in an upward motion. An elevation of the intermediate ring 564 is substantially equal to the outer ring 566. The elevation of the inner ring 562 relative to the intermediate ring 564 is shown in FIG. 6.
A plurality of spokes 568 extend from the inner ring 562 to the outer ring 566 to provide structural support, additional weight to the wire retaining ring 500, and to maintain a location within a container. As the spokes are coupled to each of the rings 562, 564, and 566, the spokes are generally angled upward from the outer ring to the inner ring due to the elevation of the inner ring relative to the outer ring 566 and the intermediate ring 564. In an example, as shown in this embodiment, the wire retaining ring 500 has eight spokes 568 that each extend radially from the inner ring 562 to the outer ring 566. In a container with eight corners (e.g., at the intersections of eight vertical walls as shown in FIGS. 1 and 2 above), each spoke 568 is disposed within a corner to mitigate lateral movement of the wire retaining ring 500 within the container. The length of the spokes can be less than, substantially equal to, or greater than the radius C. In an embodiment, the spokes 568 are longer than the radius C. The spokes 568 intersect the outer ring to create a plurality of segments with an arc length 592 along the outer ring 566. As the spokes are disposed at a substantially equivalent offset angle around the outer ring, the segment distance between spokes have a substantially equivalent arc length 592. The spokes 568 have an inner end 582 and an outer end 584, wherein the distal ends 582 and 584 are bent at an angle of approximately 90 degrees in an upward direction. This feature can also mitigate entanglement hazards of the wire with the retaining ring 500.
A wire slot 534 is defined by a first slot rail 526 and a second slot rail 528, which both extend from the inner ring 562 to the outer ring 566. The wire slot 534 is generally located at a position in place of a spoke 568 to maintain general structural integrity, wherein an inner gap 572 at the inner ring and a intermediate gap 574 at the intermediate ring are made to facilitate a continuous slot from the inside to the outside of the wire retaining ring. In an embodiment, the width of the inner gap 572 is less than the width of the intermediate gap 574. It is to be appreciated, however, that the inner gap 572 can have a width that is substantially any size relative to the intermediate gap 574. Using the wire slot 534, a user can move the trailing end of a wire (e.g., trailing end 122) out of the inner ring 562 to location near the outer ring 566, such as between the intermediate ring 564 and the outer ring 566, as shown in FIG. 6. In the meantime, the feeding end of the wire is drawn from the inner ring to a weld operation. As the coil is depleted from the top to the bottom of the coil within the container, the wire is drawn up through the wire slot 534 wherein the trailing end is lifted out of a first container to become the leading end of a second coil within a second container. To facilitate this endless wire configuration, the trailing end is fused, welded, or otherwise connected to the leading end of the second coil. As subsequent coils can all include a wire retaining ring, the wire can effectively provide an endless supply of wire to a welding system while mitigating any entanglement related thereto.
FIG. 7 is a top perspective view of a third embodiment of a wire retaining ring 700. The wire retaining ring 700 includes a discontinuous inner ring 762, a discontinuous intermediate ring 764, and an outer ring 766, which are axially concentrically aligned, or coaxial, to one another. The inner ring 762 has a radius A, the intermediate ring 764 has a radius B, and the outer ring 766 has a radius C, wherein radius C is greater than radius B and radius B is greater than radius A. In addition, an elevation of the horizontal plane defined by the inner ring 762 is greater than an elevation of the horizontal plane defined by the outer ring 766 to accommodate wire drawn from the center of the inner ring in an upward motion. The elevation of the horizontal plane defined by the intermediate ring 764 is substantially equal to the that of the outer ring 766.
A plurality of spokes 768 extend radially from the inner ring 762 to the outer ring 766 to provide structural support, additional weight to the wire retaining ring 700, and to maintain a location, or index, of the wire retaining ring 700 within a container. As the spokes are coupled to each of the rings 762, 764, and 766, the spokes are generally angled upward from the outer ring to the inner ring due to the elevation of the inner ring relative to the outer ring 766 and the intermediate ring 764. In an example, as shown in this embodiment, the wire retaining ring 700 has seven spokes 768 that each extend radially from the inner ring 762 to the outer ring 766. In a container with eight corners (e.g., at the intersections of eight vertical walls as shown in FIGS. 1 and 2 above), each spoke 768 is disposed within a corner to mitigate lateral or rotational movement of the wire retaining ring 700 within the container. The length of the spokes can be less than, substantially equal to, or greater than the radius C. In an embodiment, the spokes 768 are longer than the radius C. The spokes 768 intersect the outer ring to create a plurality of segments 792 with an arc length along the outer ring 766. As the spokes 768 are disposed at a substantially equivalent angle around the outer ring 766, the segments 792 have a substantially equivalent arc length. The spokes 768 have an inner end 782 and an outer end 784, wherein the out ends 784 are bent at an angle of approximately 90 degrees in an upward direction. In addition to reducing the movement of the ring 700 with a container, these upturned ends 782, 784 may also mitigate entanglement hazards of the wire with the retaining ring 700.
In the embodiment shown in FIG. 7, the wire retaining ring 700 also includes a plate 730. The plate 730 extends radially from the inner ring 762 to the outer ring 766 and is affixed to the ring 700 at the inner ring 762 and the outer ring 766. Additionally, the plate 730 may also be affixed to the intermediate ring 764. The plate 730 may be affixed to the rings 762, 764, 766 by welding, soldering, or other joining techniques known to one of ordinary skill in the art. A plurality of windows 738 are provided in the plate 730, and the absence of material provided by the windows decreases the amount of surface area of the plate for the welding wire to contact during payout, thereby decreasing the amount of friction to which the welding wire is subjected during payout from the wire container.
The plate 730 also includes a slot 734 having a slot width. The slot 734 defines a discontinuity or gap in the inner ring 762 and intermediate ring 764 and extends radially from the discontinuity in the inner ring to a position radially inward of the outer ring 766. A tab 736 is provided in the plate 730 and extends partially across the slot 734 at a location proximate the inner gap 764 or discontinuity in the inner ring 762. The tab 736 serves to narrow the slot 734 at the inner ring 762 so as to mitigate the welding wire being paid off from catching or sticking in the gap 734 during wire payout. While the tab 736 is provided as a projecting member from one wall of the slot 734, it is also envisioned that the slot 734 may be gradually tapered from the outer ring 766 toward the inner ring 762 so as to achieve the same benefit of the tab (not shown in FIG. 7). The slot 734 is curved or arcuate and is therefore the to extend in an arc from the inner ring 762 toward the outer ring 766, but alternately may extend linearly from the inner ring 762 toward the outer ring 766. The wire slot 734 is generally located at a position in place of a spoke 768 to maintain general structural integrity, wherein the discontinuity or gap 772 at the inner ring 762 and the discontinuity or gap 774 in the intermediate ring 764 are formed to facilitate a continuous slot from the inside to the outside of the wire retaining ring. In an embodiment, the width of the inner gap 772 is less than the width of the intermediate gap 774. It is to be appreciated, however, that the inner gap 772 can have a width that is substantially any size relative to the intermediate gap 774. Using the wire slot 734, a user can move the trailing end of a wire out of the inner ring 762 to location near the outer ring 766, such as between the intermediate ring 764 and the outer ring 766. In the meantime, the feeding end of the wire is drawn from the inner ring 762 to a weld operation. As the coil is depleted from the top to the bottom of the coil within the container, the wire is drawn up through the wire slot 734, wherein the trailing end of the wire is lifted out of a first container to become the leading end of a second coil within a second container. To facilitate this endless wire configuration, the trailing end is fused, welded, or otherwise connected to the leading end of the second coil. As subsequent coils can all include a wire retaining ring, the wire can effectively provide an endless supply of wire to a welding system while mitigating any entanglement related thereto.
The wire retaining ring 700 can be made from a wide variety of materials, including, but not limited to steel, aluminum, copper, nickel, stainless steel, brass, as well as the variety of metallic and plastic materials described hereinabove.
FIG. 8 is a top perspective view of a fourth embodiment of a wire retaining ring, which shows wire retaining member 800. The wire retaining member 800 includes a substantially planar body 860 which has a perimeter, an inner wall 862, and an outer wall 866. As shown in the embodiment of FIG. 8, the perimeter of the planar body is octagonal, and such a configuration is designed such that the number of corners 810 of the retaining member 800 is equal to the number of corners in the container of welding wire. When the retaining member 800 is placed in the welding wire container, this configuration mitigates lateral or rotational movement of the wire retaining ring within the container during payout of the welding wire. Of course, a circular perimeter and other polygonal perimeter shapes are also contemplated and may be configured so as to correspond to the interior shape of a variety of welding wire containers. The planar body 860 also contains a plurality of view slots 868, which are provided to allow a user to monitor the height of the welding wire within the container as the wire is paid off. The view slots 868 shown in FIG. 8 are spaced at equal intervals through the planar body and extend in an arc from the inner wall 862 toward the outer wall 866, although the slots may also extend in a straight line, diagonal line, or in other shaped slots from the inner wall toward the outer wall. As best shown in FIG. 11, when wire retaining member 800 is placed on top of a coil of wire, fuse slots 868 allow the operator to view the coil configuration through view slots 868 and monitor payoff of the wire from the coil.
A tab 836 is provided in the inner wall 862 and extends partially across the slot 834 at a location proximate the discontinuity in the inner wall 862. The tab 836 serves to narrow the slot 834 at the inner wall 862 so as to mitigate the welding wire being paid off from catching or sticking in the gap 834 during wire payout. While the tab 836 is provided as a projecting member from one wall of the slot 834, it is also envisioned that the slot 834 may be gradually tapered from the outer ring 866 toward the inner ring 862 so as to achieve the same benefit of the tab.
In the embodiment shown in FIG. 8, the inner wall 862 is frustoconical in shape and extends upwardly from the substantially planar body 860. At its top, the inner wall 862 is circular in shape defines an aperture 850 located at the center of the planar body 860. When inserted in a container of welding wire, the aperture 850 is oriented so as to be coaxial with the longitudinal axis of the coil of welding wire. In other words, the aperture 850 and the coiled welding wire share a common axis. The outer wall 866 also extends upwardly from the substantially planar body 860 and extends continuously around the perimeter of the planar body. As is the case in FIG. 8, the outer wall 866 is provided in the form a plurality of walls which intersect at corners 810, where the number of corners 810 is equal to the number of corners on the interior of the container. In such a polygonal configuration, each wall is the to have a wall length 892, where the wall length is substantially equal to the length of an interior wall of the welding wire container.
In place of one of the view slots 868, a wire slot 834 is provided. The wire slot 834 has a slot width and defines a discontinuity or gap in the inner wall 862. The wire slot 834 extends radially from the discontinuity in the inner wall 862 to a position radially inward of the outer wall 866. The slot 834 is curved or arcuate and is therefore the to extend in an arc from the inner wall 862 toward the outer wall 866, but alternately may extend linearly from the inner wall toward the outer wall. The wire slot 834 is generally located at a position in place of a view slot 868 to maintain general structural integrity, wherein the inner gap 872 or discontinuity at the inner wall 862 is formed to facilitate a continuous slot from the inside to the outside of the wire retaining member 800. Using the wire slot 834, a user can move the trailing end of a wire out of the inner 862 to location near the outer wall 866. In the meantime, the feeding end of the wire is drawn from the inner wall 862 to a weld operation. As the coil is depleted from the top to the bottom of the coil within the container, the wire is drawn up through the wire slot 834, wherein the trailing end of the wire is lifted out of a first container to become the leading end of a second coil within a second container. To facilitate this endless wire configuration, the trailing end is fused, welded, or otherwise connected to the leading end of the second coil. As subsequent coils can all include a wire retaining ring, the wire can effectively provide an endless supply of wire to a welding system while mitigating any entanglement related thereto.
The wire retaining member 800 can be made from a wide variety of materials, including, but not limited to steel, aluminum, copper, nickel, stainless steel, brass, as well as the variety of metal and plastic materials described hereinabove.
FIG. 9 is a top perspective view of another embodiment of a wire retaining ring 900. The wire retaining ring 900 includes a discontinuous inner ring 962, a discontinuous intermediate ring 964, and a discontinuous outer ring 966, which are axially concentrically aligned, or coaxial, to one another. The inner ring 962 has a radius A, the intermediate ring 964 has a radius B, and the outer ring 966 has a radius C, wherein radius C is greater than radius B and radius B is greater than radius A. In addition, an elevation of the horizontal plane defined by the inner ring 962 is greater than an elevation of the horizontal plane defined by the outer ring 966 to accommodate wire drawn from the center of the inner ring in an upward motion. The elevation of the horizontal plane defined by the intermediate ring 964 is substantially equal to the that of the outer ring 966.
A plurality of spokes 968 extend radially from the inner ring 962 to the outer ring 966 to provide structural support, additional weight to the wire retaining ring 900, and to maintain a location, or index, of the wire retaining ring 900 within a container. As the spokes are coupled to each of the rings 962, 964, and 966, the spokes are generally angled upward from the outer ring to the inner ring due to the elevation of the inner ring relative to the outer ring 966 and the intermediate ring 964. In an example, as shown in this embodiment, the wire retaining ring 900 has seven spokes 968 that each extend radially from the inner ring 962 to the outer ring 966. In a container with eight corners (e.g., at the intersections of eight vertical walls as shown in FIGS. 1 and 2 above), each spoke 968 is disposed within a corner to mitigate lateral or rotational movement of the wire retaining ring 900 within the container. The length of the spokes can be less than, substantially equal to, or greater than the radius C. In an embodiment, the spokes 968 are longer than the radius C. The spokes 968 intersect the outer ring to create a plurality of segments 992 with an arc length along the outer ring 966. As the spokes 968 are disposed at a substantially equivalent angle around the outer ring 966, the segments 992 have a substantially equivalent arc length. The spokes 968 have an inner end 982 and an outer end 984, wherein the outer ends 984 are bent at an angle of approximately 90 degrees in an upward direction. In addition to reducing the movement of the ring 900 with a container, these upturned ends 982, 984 may also mitigate entanglement hazards of the wire with the retaining ring 900.
In the embodiment shown in FIG. 9, the wire retaining ring 900 also includes a wire guide 930 having a first portion 931 and a separate second portion 932. The wire guide 930 extends radially from the inner ring 962 to the outer ring 966 and is affixed to the ring 900 at the inner ring 962 and the outer ring 966. Additionally, the wire guide 930 may also be affixed to the intermediate ring 964. The wire guide 930 may be affixed to the rings 962, 964, 966 by welding, soldering, or other fastening or joining techniques known to one of ordinary skill in the art. A plurality of windows 938 are provided in the second portion 932, and the absence of material provided by the windows decreases the amount of surface area of the second portion 932 for the welding wire to contact during payout, thereby decreasing the amount of friction to which the welding wire is subjected during payout from the wire container.
The wire guide 930 defines a slot 934 having a slot width. The slot 934 defines a discontinuity or gap in the inner ring 962, intermediate ring 964, and outer ring 966, thereby separating the wire guide 930 into the first portion 931 and the second portion 932. While a radius 936 may be provided as a projecting member from one wall of the slot 934, it is also envisioned that the slot 934 may be gradually tapered from the outer ring 966 toward the inner ring 962 so as to achieve the same benefit of the radius (not shown in FIG. 9). An inner portion of slot 934, shown, is curved or arcuate and is therefore the to extend in an arc from the inner ring 962 toward the intermediate ring 964. To that end, the first portion 931 of guide 930 includes a concave edge 1001 extending from inner ring 962 toward intermediate ring 964. As shown, edge 1001 may extend beyond intermediate ring 964. The concave edge 1001 extends outward (i.e. clockwise) as it extends radially outward from radius 936 forming a nose 1003 at inner ring 962. The concave edge reaches an apex of curvature 1005 between inner ring 962 and intermediate ring 964. From apex 1005, concave edge 1001 extends inward (counterclock-wise) as it continues radially outward. From this point, first portion 931 flares or fans outward from a position proximate the intermediate ring 964 to the outer ring 966 forming a knee 1007 at the terminus of concave edge 1001. As shown, from knee 1007, first portion 931 of guide 930 may extend outward at a constant slope to form a linear edge 1009. In the example shown, gap 972 formed between first and second portions 931,932 is maintained at a constant width between inner ring 962 and intermediate ring 964 by a convex edge 1002 that generally has the same radius of curvature as edge 1001. From intermediate ring 964 to outer ring 966, the edge 1002 may include a section 1004 that extends along a line generally parallel to a radial line but offset from the center axis of retaining ring 900. The outward flare of first portion 931 relative to section 1004 opens the gap 972 between first and second portions 931,932.
In other words, the portion of the slot 934 extending from the inner ring 962 to a position proximate the intermediate ring 964 has a substantially constant width, while the portion of the slot 934 extending from the position proximate the intermediate ring 964 to the outer ring 966 increases in width from the intermediate ring to the outer ring. Alternately, the slot 934 may extend linearly from the inner ring 962 toward the intermediate ring 964 while still flaring from the intermediate ring 964 to the outer ring 966. The wire slot 934 is generally located at a position in place of a spoke 968 to maintain general structural integrity, wherein the discontinuity or gap 972 at the inner ring 962, the discontinuity or gap 974 in the intermediate ring 964, and the discontinuity or gap 976 in the outer ring 966 are formed to facilitate a continuous slot from the inside to the outside of the wire retaining ring 900. In an embodiment, the width of the inner gap 972 is less than the width of the intermediate gap 974, which in turn is less than the width of the outer gap 976. It is to be appreciated, however, that the inner gap 972 can have a width that is substantially any size relative to the intermediate gap 974 or outer gap 976.
Given that the slot 934 may be arcuate, or curved, in shape, it is also contemplated that a shortened spoke 999 may be affixed to one of the portions 931, 932 of the wire guide 930 to further aid in alignment of the ring 900 in a wire container or box. As a further option, the radial outer extremity of guide 930 may be provided with an upwardly offset end to further control release of the wire from retaining ring 900. The upward offset guides the wire upward just prior to release from ring 900 promoting a more gradual release of wire from ring 900 and guiding the wire upward toward the top of the box or a wire retainer 174 located on the wall of the box 172 (FIG. 10) effectively reducing the length of wire being released from ring 900 and thereby reducing the chance that a e-script will form upon release. In the example shown in FIG. 9, each guide portion 931, 932 may be provided with an upwardly offset lip 1011,1012 extending upwardly and radially outward from respective edge portions 1009,1004. In the example shown, shortened spoke 999 is attached to second lip 1012 on second guide portion 932.
Using the wire slot 934, the welding process can move the trailing end of a wire out of the inner ring 962 to location near the outer ring 966, such as between the intermediate ring 964 and the outer ring 966. In one embodiment, as shown in FIG. 10, the trailing end of the wire may be passed through a tab 174 formed in the interior of wall 172 of the wire container. In the meantime, the feeding end of the wire is drawn from the inner ring 962 to a weld operation. As the coil is depleted from the top to the bottom of the coil within the container, the wire is drawn up through the wire slot 934, wherein the trailing end of the wire is lifted out of a first container to become the leading end of a second coil within a second container. To facilitate this endless wire configuration, the trailing end is fused, welded, or otherwise connected to the leading end of the second coil. As subsequent coils can all include a wire retaining ring, the wire can effectively provide an endless supply of wire to a welding system while mitigating any entanglement related thereto.
The wire retaining ring 900 can be made from a wide variety of materials, including, but not limited to steel, aluminum, copper, nickel, stainless steel, brass, as well as the variety of metallic and plastic materials described hereinabove. In addition, wire retaining ring 900 can be made of other non-metallic or plastic materials having sufficient strength to perform the functions described herein including but not limited to paper, wood, ceramics, fiberglass, carbon-fiber, and combinations of these materials and the other materials described above.
In accordance with another aspect of the invention, a wire retaining member, generally indicated by the number 1200 may be provided. Wire retaining member 1200 may be placed on top of a coil within the container 102 prior to shipment or handling of container 102. Wire retaining member 1200 facilitates attachment of a hold-down assembly, described more completely below. Wire retaining member 1200 may have a tray-like configuration including a base portion 1203 that includes an inner wall 1204 and an outerwall 1205 at a periphery or outer edge. Inner wall 1204 defines a central opening or aperture 1211 that overlies the bore of coil 106 to allow attachment of a hold down assembly as will be described more completely below. In this sense, wire retaining ring 1200 may be used to package the coil 106 and then removed and discarded before the wire in coil 106 is used in a welding operation.
Optionally, as shown, wire retaining member 1200 may include a wire guide portion 1210 as shown in earlier embodiments including but not limited to the configuration shown in FIG. 8. The wire guiding portion 1210 will only be generally described herein. For additional details, reference may be made to previous embodiments as the structures disclosed therein may be incorporated on wire retaining member 1200. With reference to FIG. 13, base portion 1203 may be provided with a wire guiding portion 1210 that includes an upward extending inner wall 1204, which defines aperture 1211 at its axial outward extremity 1212, through which wire may be drawn from the coil. As in the case of wire guide member 800 (FIG. 8), aperture 1211 may be formed by an upwardly extending frusto-conical surface 1212 formed in the center of base portion 1203 extending upward and inward from base portion 1203. The center of aperture 1211 may be coaxial with the center axis of the coil. The aperture 1211 is formed by the axial outward edge 1214 of wire guide portion 1210 and may be configured to have a characteristic plane parallel to but spaced from the plane of base portion 1203. In the example shown, wire guide portion 1210 has a circular conical shape extending axially outward and radially inward from base portion 1203 toward aperture 1211. It will be appreciated that the aperture 1211 and wire guide portion 1210 may be circular in shape as shown, or have any other shape. The height of wire guide portion 1210 offsets aperture 1211 from base portion 1203. It will be appreciated that any height may be used including, for example, a height in the range of about 1-5 inches. In the example shown, the height of wire guide portion 1210 is about one inch. Relative to outer wall 1205, wire guide portion 1210 may have a height less than, equal to, or greater than outer wall 1205. In the example shown, wire guide portion 1210 has a height less than outer wall 1205.
As best shown in FIG. 12, to allow viewing of the coil 106 beneath packaging member 1200, base portion 1203 may define one or more view openings 1215. View openings 1215 may be of any size and shape. In general, view openings 1215 may be located on base portion 1203 in a position overlying at least a portion of the coil or other area of interest for the operator. In the example shown, plural view openings 1215 are provided and equally spaced in terms of angular position about the central axis A of base portion 1203. In the example shown, view openings 1215 radiate outwardly between wire guide portion 1210 and outer wall 1205. View openings 1215 are provided with a slot-like form generally having a constant slot width 1218. The first end 1221 of view opening 1215 is located near wire guide portion 1210 and second end 1222 of view opening 1215 is located near outer peripheral edge 1205. View opening 1215 is provided with a slight curvature between first end 1221 and second end 1222 causing the view opening to bow outward in the direction that wire is unwound from the coil. In the example shown, view opening 1215 is bowed in a clockwise direction forming a concave surface on a first side 1223 and a convex second side 1224 that extend between the first end 1221 and second end 1222. While the bow in view opening 1215 is shown as being formed by curved concave and convex sides 1223,1224, it will be understood that linearly angled surfaces may also be used to form arrow-like openings. The bow of view opening 1215 is believed to reduce the likelihood of view opening interfering with the pay out of wire from coil 106 and improve the viewing of the wire and/or coil activity.
According to another aspect of the invention, a hold down support assembly, generally indicated by the number 1250, is provided on base portion 1203. Assembly 1250 may include one or more supports 1252 extending upwardly from base portion 1203. In the example shown, a pair of supports 1252 are located on opposite sides of aperture 1211 and located generally midway between aperture 1211 and the outer peripheral wall 1205. Relative to the center A of base portion 1203, supports 1252 are located about two thirds of the length of a radius extending from the center to the outer edge 1205 of base portion 1203. The supports 1252, however, may be located at any radial position relative to the center of base portion 1203 including an inward position immediately adjacent wire guide portion 1210, or if wire guide portion is not present, at the center of base portion 1203. Alternatively, supports 1252 may be located at the radial outward extremity of base portion 1203 near the outer wall 1205. To transfer the load from the hold down assembly more directly to the wire, supports 1252 may be located on base portion 1203 to overlie the wire coil. To evenly distribute the load from the hold down assembly, supports 1252 may be centered relative to the radial dimension of the coil (FIG. 14). In the example shown, the supports 1252 are centered relative to the radial dimension of the coil by placing the supports just slightly outward of the midway point between the wire guide 1210 and outer wall 1205. In this way, the load from the hold down assembly 1270 (FIG. 14) is evenly distributed across the wire through the support 1252.
Supports 1252 extend upward from base portion 1203 to engage a hold down assembly, generally indicated by the number 1270 designed to apply a compressive force to wire retainer 1200. The compressive force holds wire retainer 1200 in place during shipping and handling of container 102. The compressive force may be transmitted to coil 106 as discussed above to also help hold coil 106 in place. Hold down assembly 1270 generally includes a hold down member 1272 and a restraint 1274. The restraint may be attached near the base of container 102 and extend upward through the bore of the coil 106 to attach to hold down rod 1272. Restraint 1274 may have any form, be comprised of one or more members, and be a solid member or a flexible member. To facilitate the application of a compressive force to hold down rod 1272, restraint may have a variable length allowing restraint to be extended to fit over hold down rod 1272 and then retracted to a shorter length to apply the compressive force. Suitable restraints, which are provided as an example and are not limiting, include a ratchet strap, zip tie, chain, wire, bungee cord, or elastic band.
With wire retainer 1200 in place, restraint 1274 may be pulled upward from the base 1273 of the container 106 through aperture 1211 in wire retainer 1200. The restraint 1274 may then be looped over or otherwise secured to hold down member 1272. Hold down member 1272 may have a variety of shapes and may include one or more members. In the example shown, hold down member 1272 is a straight rod having a first end 1276 and a second end 1278 that lie on a common axis 1280. It will be appreciated that ends 1276,1278 need not lie along the same axis, for example, when hold down member 1272 includes multiple members that are offset from each other or a single non-straight member. In such instances, supports 1252 may be located on opposite sides of base portion 1203 but not aligned with each other to accommodate any offset between ends 1276,1278. For example, hold down member 1272 may have a jog or ziz zag shape that offsets ends 1276,1278. In the example shown, ends 1276,1278 lie in the same horizontal and vertical plane. It is contemplated, however, that ends 1276,1278 that ends 1276,1278 may lie in different vertical and/or horizontal planes. It will be appreciated that supports 1252 may be non-symmetrical relative to each other i.e. have different heights, shapes, or locations to accommodate various types of hold down members 1272.
In general, hold down member 1272 rests on supports 1252 and is held against supports 1252 by restraint 1274. In the example shown, supports 1252 are spaced an equal distance from the center axis A of base portion 1203 (FIG. 12), which is located coaxially with the center of coil 106. Supports 1252 are diametrically opposed from each other and lie on a common radial line 1282 extending through center axis A. Supports may have any shape that extends upward from base portion 1203 to provide a surface that contacts hold down member 1272. The example shown, therefore, is not limiting. In the example shown, supports 1252 each have a pyramidal structure with four sides 1254 that extend upward and inward from base portion 1203. Support 1252 may be hollow or solid. The taper created by sides 1254 facilitates release from a mold and helps spread the compressive force applied to support 1252 by hold down assembly 1270 over a larger portion of base portion 1203. Sides 1254 may terminate in an upper surface 1258, which may lie parallel to base portion 1203. Hold down member 1272 may rest on upper surface 1258 and be held fast against this surface by the force applied by restraint 1274. Optionally, to facilitate location of hold down member 1272 on support 1252 and to prevent hold down member 1272 from inadvertently moving off of support 1252, a receiver, generally indicated by the number 1255 may be provided to locate hold down member 1272 on support 1252. To provide further strength to base portion 1203 in the area of supports 1252, a support rib 1260 may be molded into base portion 1203 along a radial line extending outward from inner wall 1204 to outer wall 1205 on either side of a support 1252. In the example shown, support rib 1260 is aligned with receiver 1255 to align rib 1260 with the compressive force applied by hold down member 1272.
Receiver 1255 may include any positive or negative surface capable of engaging a portion of hold down member 1272 to locate it on support 1252. For example, receiver may include slot or recess 1256 in which an end of hold down member 1272 is received. In the example shown, receiver 1255 includes a recess 1256 formed in the center of upper surface 1258 of support 1252. Recess 1256 has a generally rectangular shape and extends across the entire upper surface 1258 and is open at each end. The recess 1256 on opposed pairs of supports 1250 share a common axis so that each end 1276,1278 of the straight rod shown may be set within both recesses 1256.
As discussed above, the hold down assembly may include a rod received within recesses 1256 formed in supports 1252. The hold down assembly also includes a restraint including but not limited to an elastic band, that extends upward from the base of the container 102 to apply a downward force to rod 1270, which in turn, is transmitted to the coil 106 through the supports 1252 and packaging ring 1200. The downward force supplied by hold down assembly vertically holds the packaging ring 1200 against coil 106 applying a compressive force that helps hold the coil in place during shipment and handling.
In the example shown, restraint 1274 includes an elastic band 1275 that is attached to the base of container 102 and stretched upwardly through the bore of coil 106 and above aperture 1211. To assemble the wire retaining ring 1200 and hold down assembly 1270 according to the invention, the coil is placed in the container with the bore of the coil over the base of the container. One end 1274A of restraint 1274 may be attached to the base of the container 102 before or after the wire retaining ring 1200 is put in place. The wire retaining ring 1200 is set on top of the coil 106 with aperture 1211 in at least partial registry with the bore of the coil 106 so that the restraint 1274 may be pulled upward through bore and aperture 1211 to exit the package above wire retaining ring 1200. The hold down member 1272 may be placed on supports 1252 before or after a free end 1274B of restraint 1274 is attached. When a receiver 1255 is present, the ends 1276,1278 of hold down member 1272 may be located within the receivers 1255 prior or after attachment of restraint 1274.
In the example shown, hold down member 1272 is a single rod and restraint is an elastic band having an open loop at its free end 1274B. The hold down member 1272 is threaded through the loop in the elastic band and pulled upwardly against the force of the elastic band to position the rod above supports 1252 located on either side of aperture 1211. Once the rod is aligned with the receivers 1255, the operator may allow the hold down member 1272 to move downward reducing the length of elastic band 1275 and release the rod allowing it to be pulled downward into recesses 1256 by the force of the elastic band 1275. The compressive force from elastic band 1275 is conveyed through supports 1252 and base portion 1203 to the underlying coil 106 to hold both the wire restraint 1200 against coil 106.
The above examples are merely illustrative of several possible embodiments of various aspects of the present invention, wherein equivalent alterations and/or modifications will occur to others skilled in the art upon reading and understanding this specification and the annexed drawings. In particular regard to the various functions performed by the above described components (assemblies, devices, systems, circuits, and the like), the terms (including a reference to a “means”) used to describe such components are intended to correspond, unless otherwise indicated, to any component, such as hardware, software, or combinations thereof, which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the illustrated implementations of the invention. In addition although a particular feature of the invention may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application. Also, to the extent that the terms “including”, “includes”, “having”, “has”, “with”, or variants thereof are used in the detailed description and/or in the claims, such terms are intended to be inclusive in a manner similar to the term “comprising”.
This written description uses examples to disclose the invention, including the best mode, and also to enable one of ordinary skill in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that are not different from the literal language of the claims, or if they include equivalent structural elements.

## Claims

1. A wire packaging system for a coil of welding wire defining a bore, the system comprising:
a container adapted to receive the coil therein, the container having a base;
a wire retainer having a base portion adapted to overlie the coil, the base portion defining an aperture adapted to overlie the bore of the coil;
the base portion including a first support and a second support molded therewith and located on opposite sides of the aperture; each support extending upward from the base portion;
a hold down assembly including a restraint supported near the base of the container and extending upward through the aperture to attach to a hold down member, the hold down member having first and second ends engageable with the first and second supports and the restraint adapted to apply a compressive force to the supports via attachment of the restraint to the hold down member.

2. The wire packaging system of claim 1, wherein each support defines a receiver adapted to retain one end of the hold down member.

3. The wire packaging system of claim 2, wherein the receiver includes a recess defined in an upper surface of each support.

4. The wire packaging system of claim 3, wherein the supports are diametrically opposed relative to each other and, wherein the recesses lie on a common radial line; and wherein the first end and the second end of the hold down member are coaxial.

5. The system of claim 2, wherein the receiver is a rectangular recess open at each end.

6. The system of claim 1, wherein each support is positioned on the base portion between the aperture and an outer periphery of the base and adapted to overlie a portion of the coil.

7. The system of claim 6, wherein the supports are centered relative to a radial dimension of the coil.

8. The system of claim 1, wherein each support includes four sides extending upwardly and inwardly from the base portion; an upper surface joining the sides; wherein a receiver is formed in the upper surface.

9. The system of claim 1, wherein the base portion includes an upward extending outer peripheral wall.

10. The system of claim 9, wherein the wall forms an octagonal perimeter about the base.

11. The system of claim 9, wherein the outer peripheral wall extends up a greater extent than the upper surface of the supports.

12. The system of claim 1, wherein the base portion includes a wire guide extending upward and inward from the base portion, the axial upward extremity of the wire guide defining the aperture, and wherein the supports extend upward from the base at an equal height relative to each other, the height of the supports being greater than the height of the wire guide such that the receiver on each support is located above the wire guide.

13. The system of claim 1, further comprising at least one view opening formed in the base portion.

14. The system of claim 13, wherein view opening has a first end and a second end radially spaced from each other, the opening including a first side and a second side connecting the first end to the second end, wherein the first side is concave and the second side is convex.

15. The system of claim 14, wherein the first side and the second side are curved and equally spaced from each other.

16. The system of claim 13, wherein the base portion defines 8 view openings equally spaced from each other, and wherein supports are located between view openings and arranged in diametrically opposed pairs, each pair of supports being aligned along a common radial line.

17. A wire retainer for a coil of welding wire received in a container, the wire retainer comprising:
a base portion defining a central aperture, the base portion extending radially outward from a central axis and including an upstanding outer peripheral wall;
a frusto-conical wire guide extending upward from the base portion about the aperture; and
wherein the base portion defines plural view openings equally spaced from each other about the base, the view openings extending along radial lines radiating outward from a center of the base portion between the wire guide and the outer peripheral wall, wherein the view openings at least partially over lie the coil and are bowed in a direction corresponding to the removal of the welding wire from the coil.

18. A wire retainer for a coil of welding wire received in a container, the wire retainer comprising:
a base portion defining a central aperture, the base portion extending radially outward from a central axis and including an upstanding outer peripheral wall;
a frusto-conical wire guide extending upward from the base portion about the aperture; and
wherein the base portion defines plural view openings equally spaced from each other about the base, the view openings extending along radial lines radiating outward from a center of the base portion between the wire guide and the outer peripheral wall; and a pair of diametrically opposed supports extending upward from the base portion, each support including a receiver, wherein the receiver is located above the wire guide.

19. The wire retainer of claim 18, wherein the receiver on each support includes a recess formed in an upper surface of the support, each recess being open at a radial inward end and extending along a common radial line passing through a center of the base portion.

20. The wire retainer of claim 18, wherein each support includes four sides extending upward and inward from the base portion toward an upper surface to form a truncated pyramid, wherein the receiver on each support is formed on the upper surface.

21. A method of packaging welding wire in a coil, the method comprising:
providing a container having a base;
placing a coil of welding wire having a bore within the container;
providing a wire retainer including a base portion defining a central aperture and a pair of supports extending upward from the base portion on opposite sides of the aperture, the each support defining a receiver located above the aperture;
placing the wire retainer on the coil and locating the aperture at least partially over the bore;
providing a hold down assembly including a hold down member and a restraint;
attaching the restraint to the base of the container and pulling a free end of the restraint upward from the base, through the bore and aperture;
attaching the free end of the restraint to the hold down member;
locating a first end of the hold down member within the receiver of one of the supports and locating a second end of the hold down member within the receiver of the other of the supports;
attaching the restraint to the hold down member and applying a compressive force to the hold down member by reducing a length of the restraint.

22. The method of claim 21, wherein the step of providing a wire retainer includes locating the supports on the base portion such that the are centered over a portion of the coil on opposite sides of the aperture.

23. The method of claim 21, wherein the step of providing a wire retainer includes forming a frusto-conical wire guide extending upward and inward from the base portion, wherein the axial outer extremity of the wire guide defines the aperture.