A METHOD AND APPARATUS FOR MAKING BOWS

Abstract: A method and apparatus for making bows comprises a tie member wrapping machine, which wraps a tie member (T) around a run of ribbon (R) and twists it at the free ends. In order to dispose the tie (T) at the center of the run of ribbon (R), a jig is mounted on the head (11) of the wrapping machine to position the ribbon (R) at the slot (12) of the machine and to center the ribbon (R) relative to the slot (12). The jig includes diverging rods (21,22,21′,22′) around which the ribbon (R) is wrapped. As the ribbon (R) is moved rearwardly into the slot (12), a slack develope in the ribbon (R) to permit a tight cinching of the central portion by the tie member (T).

Description: The present invention relates to a method and an apparatus for making bows out of ribbon and the like. At present, bows are manufactured by using a jig comprising a base and two horizontally spaced vertically projecting rods. A strip of material is wrapped around the rods and a piece of precut decorative cord or string is then wrapped around the centre of the strip of material and tied so that the strip of material extends longitudinally on either side of the centrally placed string. The material is removed from the jig and the pieces of material on each side of the string may then be separated or fanned out to form the decorative bow. This prior art method is very time consuming since it must be done totally by hand. The present rate for an experienced bow maker is approximately 100 pieces per hour. The main object of the present invention is to provide a method and apparatus for making bows which will improve the rate of making the bows, without sacrificing the quality of the workmanship. This and other objects of the present invention are achieved in accordance with the present invention wherein an automatic bag closing machine is utilized, in particular the Tie-Matic™ Mark III Model 501 machine manufactured by the Plas-Ties division of International Packaging Corporation, P.O. Box 10059, Santa Ana, California. This machine is well known and is at present utilized to seal the tops of plastic bags for bread or the like. Accordingly, the invention provides an apparatus for making bows comprising: a base and two elongate members projecting outwardly therefrom for positioning a ribbon (R) for tying to form a bow; characterized by means for twisting the free ends of a tie member (T) after wrapping, the twisting means having a head mounted on the base and the head having a workpiece receiving slot therein; in that the members are in alignment with the slot such that the ribbon (R) can be wrapped therearound to position a central portion thereof in the slot; and in that at least a portion of each member is at a greater distance from said head than another. The invention also provides a method making a bow comprising the steps of; wrapping a ribbon (R) around second portions of two rods each of which have first portions spaced closer to each other than second portions thereof while simultaneously positioning a central portion of the wrapped ribbon (R) in alignment with a slot in a head of an automatic tie member wrapping and twisting apparatus; moving the central portion of the wrapped ribbon (R) onto the first portion of each rod and into the slot to cause a slack to develop in the central portion of the ribbon (R) and to cause operation of the apparatus whereby a tie (T) is wrapped around the ribbon (R) and the free ends thereof twisted to maintain the same in place; and removing said ribbon (R) from said rods and spreading apart the superimposed layers of the ribbon (R) to form the bow. The machine is provided with a V-shaped slot that receives the top of the bag. When the machine is operated, a tie is cut off from a roll and automatically wrapped around the end of the bag. The ties comprise conventional twists, having a central wire embedded in a paper or plastic covering of the type that normally comes with plastic bags. However these ties are on an endless roll and are cut to size each time the machine is operated. The machine operates to both sever the tie, wrap it around the end of the bag and twist it to maintain it in place. In accordance with the present invention, a jig is mounted on the head of the machine bearing the slot and the jig includes two horizontally spaced projecting rods which are positioned on each side of the V-shaped slot, and are set at an outwardly projecting angle to the V-shaped slot. A strip of material is wrapped around the projecting rods and the material is then moved rearwardly into the V-shaped slot. When the material reaches a preselected position in its rearward travel, a mechanism is triggered which operates the machine. A tie is then wrapped around the center of the bow by the machine and given a twist. By mounting the jig in accordance with the present invention, the tie comes out in the center of the material thereby forming the bow. By setting the rods at diverging angles to the V-shaped slot, some slack is created in the strip of material as it is moved rearwardly into the slot thereby permitting a tight cinching of the bow center, and creating a superior product compared to prior art. By using this type of arrangement, bows can be produced at rates up to 600 bows per hour. These and other objects and advantages of the present invention will be seen from the following detailed description of Figure 1 is a perspective view of the apparatus used in accordance with the present invention; Figure 2 is a front view of the apparatus in accordance with the present invention; Figure 3 is a side view of the jig shown in Fig.2 taken along line 3-3; Figure 4 is a perspective view of the jig and head of the tieing machine in accordance with the method of the present invention; Figure 5 shows a bow formed in accordance with the present invention; and Figure 6 is a perspective view of an alternative embodiment of the present invention. As shown in Fig. 1, the Tie-Matic bag closing machine 10 includes a supply 13 of ties. The machine 10 includes a projecting head portion 11 having a V-shaped slot 12 in which a portion of a workpiece such as a bag is placed during use. The workpiece is inserted in to the slot 12 and, when it reaches a preselected position in its rearward travel, it triggers a mechanism which operates to wrap the tie T around the workpiece, cut the tie to a preselected length and give it a twist to maintain it in place. The workpiece is then removed from the slot 12 in the manner shown. Additional information on the construction and operation of this machine may be obtained from the Operating and Maintenance Manual, Mark III - Tie-Matic, 8/83, published by the Plas-Ties Division, International Packaging Corporation, P.O. Box 10059, Santa Ana, California 92711. In accordance with the present invention, as shown in Fig. 2, the machine 10 is mounted on a table or flat base 15 on its side so that the head portion 11 is vertical as shown. The machine 10 can be mounted in place via a clamp or other well known fastening means. Fastened to head 11 of the machine 10 is jig 20 which includes a planar base 25 having a cutout 26 therein in which the head 11 is received. The jig 20 is oriented substantially perpendicular to the V-shaped slot 12. Jig 20 is secured to the head 11 by screws or other conventional fastening means which are not shown. Base 25 has two elongated cylindrical rods 21, 22 spaced on either side of the head 11 by an equal distance and projecting outwardly therefrom and aligned with slot 12 as shown. As can be seen from Fig. 3, posts 21 and 22 are mounted in place between flanges 23, 24 on one side of base 25 and nuts 27, 28 engageable with ends of rods 21 and 22 which are threaded. The posts or rods 21, 22 are mounted at diverging angles with respect to each other. That is, the posts are mounted so that they taper outwardly, away from each other. The rods may be set at a diverging angle of between 5° to 15° with respect to a line drawn perpendicular to the base 25 and, in a preferred embodiment, at an angle of 8°. In use, an operator wraps a run of ribbon R around the outer ends of rods 21 and 22 and then moves the ribbon rearwardly along rods 21, 22 into the slot 12. As the ribbon moves rearwardly, a slack is created in the ribbon due to the fact that the inner ends of the rods are located closer to each other than the outer ends. At a preselected point in the rearward travel of the ribbon, the trigger mechanism causes machine 10 to be activated and tie the ribbon R with the tie T as explained hereinbefore. The tie is dispersed at the central portion of the ribbon, whereby a bow can be easily formed. The tie T may be fabricated from a decorative matching paper tape with a central wire embedded therein. Moreover, the slack created in the ribbon by the angled posts permits a tight cinching of the bow center, thereby creating a superior product. An alternative embodiment of a bow making apparatus fabricated according to the present invention is shown in FIG. 6, wherein like reference characters indicate identical elements. However, instead of the outwardly tapering rods 21 and 22, bent rods 21′ and 22′ are provided. Each rod comprises a straight inner portion 21a′, 22a′ spaced near the head 11 and an outer portion 21b′, 22b′ spaced further away from the head 11, the respective portions of each rod being interconnected by a bent section 21c′, 22c′. In operation, the run of a ribbon is wrapped around the outer portions 21b′, 22b′ of the rods and the moved toward the base 25. The ribbon slides around bent sections 21c′, 22c′ onto portion 21a′, 22a′, at which point the machine 10 operates. Since the portions 21a′, 22a′ are closer to the head 11 than the portions 21b′, 22b′, a slack is created in the ribbon at the time the tie is applied to produce a tight cinching of the bow center. The elements are sized and positioned so that the machine will not operate until the run of ribbon is on portions 21a′, 22a′. In an actual embodiment, the distance A shown in FIG. 6 was approximately 10.8 cm and the distance B was approximately 12.1 cm while the overall length of the rods was chosen to be approximately 16.5 cm.

Claims: An apparatus for making bows comprising: a base and two elongate members (21, 22, 21', 22') projecting outwardly therefrom for positioning a ribbon (R) for tying to form a bow; characterized by means for twisting the free ends of a tie member (T) after wrapping, the twisting means having a head (11) mounted on the base (25) between the two elongated members (21, 22, 21', 22') and the head having a workpiece receiving slot (12) open to the front and to both sides therein; in that the members (21, 22, 21', 22') are in alignment with the slot (12) such that the ribbon (R) can be wrapped therearound to position a central portion thereof in the slot (12); and in that at least a portion of each member (21', 22') is at a greater distance from said head (11) than another. The apparatus of claim 1, in which said members (21, 22) are straight rods, and said base (25) includes mounting means (23,24) for mounting each rod (21, 22) at a diverging angle with respect to said head (11). The apparatus according to claim 2, wherein the rods (21, 22, 21', 22') are positioned equidistantly from the head (11). The apparatus according to claim 2, wherein the rods (21, 22) diverge outwardly away from each other at an angle between 5° and 15° to a line drawn perpendicular to said base (25). The apparatus according to claim 4, in which the angle is 8°. The apparatus of claim 1, in which said members are rods and each rod (21', 22') includes an inner portion (21a', 22a') and an outer portion (21b', 22b') spaced further away from said head (11) than said inner portion, and a connecting section (21c', 22c') between said inner and outer portion. A method making a bow comprising the steps of; wrapping a ribbon (R) around second portions of two rods (21, 22, 21', 22') each of which have first portions spaced closer to each other than second portions thereof while simultaneously positioning a central portion of the wrapped ribbon (R) in alignment with a slot (12) in a head (11) of an automatic tie member wrapping and twisting apparatus; moving the central portion of the wrapped ribbon (R) onto the first portion of each rod (21, 22, 21', 22') and into the slot (12) to cause a slack to develop in the central portion of the ribbon (R) and to cause operation of the apparatus whereby a tie (T) is wrapped around the ribbon (R) and the free ends thereof twisted to maintain the same in place; and removing said ribbon (R) from said rods (21, 22, 21', 22') and spreading apart the superimposed layers of the ribbon (R) to form the bow.

Inventors: HECHT, DAVID
Applicants: HECHT, DAVID
Application year: 1987
Main classification: D04D7
IPC codes: D04D7