Clamp assembly for conveyor sidewall

A clamping assembly for mounting an apparatus on a side rail of a conveyor has one or a pair of parallelepiped shaped blocks, each having a tenon extending outwardly from one planar side thereof. The tenon has a shape similar to one-half of a dovetail shaped groove, one or two such grooves are formed in one of the side rails of a conveyor. A pair of fasteners clamp each of the blocks against the outer surface of the side rail with the tenons thereof extending into a respective dovetail groove and engaging one-half of the groove. The outer width of the tenon is less then the entrance opening of the dovetail groove enabling the tenon to be placed directly into the groove without being slid inwardly from an end opening.

BACKGROUND OF THE INVENTION

Technical Field

The invention relates to conveyors for moving articles along a predetermined path on a moving element, and in particular to a clamp assembly for mounting an apparatus adjacent to the moving conveyor. More particularly, the invention relates to a clamp assembly easily mounted on the sidewall of the conveyor frame for supporting an apparatus above the moving conveyor.

Background Information

Various types of conveyors are used in many industries for conveying numerous articles and products along a given path on a moving belt, chain, bucket, container, or other type of mechanism which supports and moves the articles and products along the desired path. Many of these conveyors will have various types of apparatus suspended above the conveyors such as labelers, printers, spray nozzles, quality control detection devices, or other devices for acting on or viewing the material being conveyed. These apparatuses are usually supported on brackets which are attached to the outboard surface of a conveyor sidewall of the supporting frame.

One common type of support bracket is a mounting block having a dovetail shaped tenon extending outwardly therefrom which is slidably received in a complementary shaped dovetail groove or grooves extending along the sidewall or attached side plate of the conveyor. Although these dovetail connections work satisfactory for supporting the apparatus, they must be installed from the end of the grooved sidewall or plate in order for the blocks to be slid along the dovetail groove to a desired location. Thus depending upon the length of the dovetail groove and number of apparatus support clamps, this requires considerable work for changing one of the clamps for maintenance reasons or adding or subtracting clamps thereon for supporting more or different types of apparatus. Likewise, when one of the dovetail tenons is damaged or worn it requires removing all of the intervening clamps by sliding along the groove to the end for replacing the entire block containing the worn tenon.

Therefore, the need exists for an improved mounting block and clamp assembly for attachment to the sidewall of a conveyor for easily mounting apparatus adjacent to the moving articles on the conveyor.

SUMMARY OF THE INVENTION

The present invention provides a clamp assembly for a sidewall of a conveyor which includes one or two separate substantially similar blocks, each of which has a tenon extending outwardly from a clamping surface thereof, which tenon in cross section has a configuration complementary to one-half of a dovetail groove, which grooves are formed in the sidewall of the conveyor for receiving the one-half dovetail shaped tenons of the one of two blocks to provide the effect of a single dovetail tenon.

Another aspect of the invention enables the single or pair of support blocks to be installed in any desired position along the length of the conveyor sidewall without moving or adjusting any of the other existing apparatus support blocks thereon, thus reducing considerably the installation and removal time and expense, and which can be performed even during running of the conveyor.

A further aspect of the invention provides forming the block and half dove-shaped tenon, as an integral one piece member of lightweight aluminum wherein each of the pair of blocks is substantially similar or identical to each other. The blocks can be installed in pairs so that the tenons extend at opposite angles with respect to each other forming in essence a split dovetail, half the dovetail being mounted in each of the spaced dovetailed grooves in the sidewall of the conveyor. This reduces considerably the cost of making the blocks and enables the blocks to be interchangeable with each other, reducing inventory and the number of parts required for a conveyor installation.

Another feature of the invention is clamping the block against the sidewall of the conveyor either by a pair of set bolts which extend through threaded holes in the block or by clamp bolts which support the desired apparatus on the block and extend through threaded holes to clamp the block and supported apparatus on the sidewall of the conveyor.

Still another feature of invention is the ability to reverse the position of the block and tenon in the groove should one side of the tenon become worn. This enables the block to be used in an opposite position wherein the non-worn angled side of the one-half tenon is engaged with one of the angled sides of the dovetail groove thereby doubling or greatly extending the usable life of the mounting blocks.

Another advantage of the invention is that should one of the tenons of one of the blocks be completely worn on both sides of the tenon it requires replacing only one of the blocks of the pair of blocks thereby reducing maintenance and replacement costs.

DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 shows a common type of conveyor indicated generally at 1 , which consists of a power driven conveyor belt 2 movably mounted between a pair of side rails 3 . Side rails 3 preferably are formed of aluminum, although they could be formed of other materials. A mounting assembly 5 is located at one end of the conveyor for moving the conveyor in a linear path between the side rails such as by a power driven roller (not shown).

In accordance with the invention, four of the improved clamp assemblies, each of which is indicated generally at 7 , are mounted on side rails 3 and clamped against outer surface 4 of the side rails. Each assembly includes a mounting bracket 10 which supports a product scanning bar 11 on rods 12 over the moving conveyor. Mounting brackets 10 , scanning bar 11 and rods 12 are for illustrative purposes only and clamp assembly 7 can support numerous types of apparatus such as sprayers, printers, label applicators, etc. which is mounted above a conveyor for performing work on or checking the various materials being moved therealong.

Each clamp assembly 7 includes a pair of blocks 15 , each preferably having six flat sides forming a parallelepiped configuration and formed of lightweight aluminum. Each block 15 has a tenon 16 ( FIGS. 3 and 4 ) preferably formed integrally with the block and extending generally across the midpoint and outwardly from a front surface 17 thereof, and in accordance with the invention has a half dovetail shaped configuration. Tenon 16 has a pair of generally parallel angled surfaces 18 and 19 which terminates in an outer flat surface 20 which extends generally parallel with front surface 17 . A pair of internally threaded holes 22 are formed in each block 15 on opposite sides of tenon 16 for mounting the block on side rail 3 and for mounting apparatus support brackets 10 thereon as described below.

At least one side rail 3 will have one or a pair of spaced parallel dovetail grooves 25 formed therein and extending generally horizontally throughout the length of the side rail. Each groove 25 is formed with an entrance opening 26 and a pair of angled walls 27 diverging outwardly from opening 26 and terminating in a flat bottom wall 28 (FIG. 3 ).

As shown in FIG. 3 block 15 is easily mounted at any desired location along groove 25 due to the one-half dovetail configuration of tenon 16 . The width W of outer surface 20 is slightly less than the width X of dovetail opening 26 which enables block 15 to be mounted in groove 25 by inserting tenon 16 directly into the groove through opening 26 in a substantially perpendicular direction as shown by arrow A in FIG. 3 . This avoids the heretofore requirement of slidably inserting a full dovetail shaped tenon into the dovetail groove at the end of the side rail and sliding it linearly therealong to the desired location requiring all of the intervening mounting blocks to be removed or readjusted. This also enables an individual block 15 to be removed and replaced if needed for maintenance without disturbing any of the other mounting blocks and supported apparatus.

After tenon 16 is inserted into a selected dovetail groove 25 , the complementary shaped angled surface 18 will rest upon one of the angled walls 27 and outer surface 20 will abut bottom wall 28 of groove 25 . If desired, another block 15 is mounted on side rail 3 by inserting tenon 16 through dovetailed opening 26 in vertical alignment with the previously mounted block 15 . However, tenon 16 of this second block will extend in the opposite direction to that of the adjacent tenon as shown in FIGS. 5 and 6 . This effectively forms a complete dovetail configuration in combination with the other tenon 16 . Half of the dovetail-shaped tenon is located within one of the dovetail grooves 25 and the other tenon is located in the other dovetail groove. Again, each block 15 is placed in the desired location along rail 3 by inserting tenon 16 easily into groove 25 by moving it directly or perpendicularly toward side rail surface 4 .

For certain applications, only one block 15 is required as shown in FIG. 3 in which surface 18 will engage and be supported on angled wall 27 of groove 25 . For other applications, such as for heavier apparatus, a pair of blocks 15 will be used as shown in FIGS. 5 and 6 , in which installations the angled surfaces 18 and 19 of tenons 16 can engage angled walls 27 of groove 25 in various combinations.

Bracket 10 is mounted on the pair of blocks 15 in various manners, two of which are shown in FIGS. 5 and 6 . As shown in FIG. 5 , bracket 10 is mounted on adjacent blocks 15 by a pair of clamping bolts 30 which extends through openings 31 formed in mounting bracket 10 and into threaded engagement with holes 22 in blocks 15 . Clamping bolts 30 also function as set bolts and press against side surface 4 of side rail 3 to clamp blocks 15 in a fixed position on the side rail as well as to mount brackets 10 thereon. FIG. 6 shows another type of mounting arrangement wherein a separate pair of stud bolts 32 clamp blocks 15 in their desired adjusted position against side rail 3 by extending through holes 22 . Mounting bracket 10 then is secured on blocks 15 by clamp bolts 30 which extend only partially into holes 22 of each block 15 . This enables mounting bracket 10 to be attached and removed from blocks 15 without disturbing the mounting of the blocks on side rail 3 since each block has its own attachment bolt 32 .

When a single block 15 is used ( FIG. 3 ) a pair of bolts (not shown) will extend through the apparatus and through block holes 22 to both mount the apparatus on block 15 and to clamp block 15 against side rail 3 .

Should an angled surface of tenon 16 or angled wall of groove 25 become damaged, block 15 is merely reversed providing an undamaged tenon surface engaging the corresponding angled wall shown by lower block 15 in FIGS. 5 and 6 . This effectively doubles the life of blocks 15 .

Accordingly, the improved clamp assembly for mounting apparatus on a conveyor sidewall is simplified, provides an effective, safe, inexpensive, and efficient device which achieves all the enumerated objectives, provides for eliminating difficulties encountered with prior devices, and solves problems and obtains new results in the art.

Moreover, the description and illustration of the invention is by way of example, and the scope of the invention is not limited to the exact details shown or described.

Having now described the features, discoveries, and principles of the invention, the manner in which the clamp assembly for a conveyor sidewall is constructed and used, the characteristics of the construction, and the advantageous new and useful results obtained; the new and useful structures, devices, elements, arrangements, parts, and combinations are set forth in the appended claims.