JPH0713823U - Vertical surface circulating table conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] To suppress sprocket tooth mesh wear of all resin table conveyor chains and improve durability. [Structure] A pair of left and right rear connecting portions 4A, 4B formed at the rear edge of the chain link 1 are fitted and mounted by left and right front connecting portions 6A, 6B, 6C formed at the front edge, Front connecting portion 6C and left and right rear connecting portions 4A, 4B
The entire width of the fitting insertion area is set as the sprocket tooth engagement width to reduce the engagement surface pressure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a vertical surface circulation table conveyor chain having a flat upper surface as a loading surface, and is particularly suitable as an all-resin conveyor chain.

[0002]

[Prior art]

 Conventionally, a vertical plane circulating table conveyor chain suitable for all resin has been disclosed in Japanese Utility Model Laid-Open No. 4-138012, and as shown in FIG. 5, each table-like chain link L has a bottom rear edge portion. Rear connecting portions A1 and A2 are formed protruding rearward and spaced apart from each other in a left-right pair, and a front connecting portion F1 into which the pair of connecting portions A1 and A2 are fitted and fitted is attached to a front edge portion of the bottom surface. , F2 and F3 are provided vertically. Reinforcing rib members R1 and R2 are provided between the front connecting portions F1 and F2 located on the left and right sides and the outermost portions of the rear connecting portions A1 and A2, respectively. Reinforcing rib members R3 and R4 are also provided between the part connecting part F3 and the insides of the rear connecting parts A1 and A2 facing each other.

The meshing portion with the sprocket teeth for driving the chain is shown by the hatched portions of the rear connecting portions A1 and A2, that is, the reinforcing rib members R1 and R3 are projected on the left connecting portion A1. It is a valley portion T1 between the two portions, and a valley portion T2 between the reinforcing rib members R2 and R4 in the right connecting portion A2.

[0004]

[Problems to be solved by the device]

 In the above-mentioned prior art, since the sprocket tooth meshing portion is limited to the valley portions T1 and T2, the meshing width is narrow and the transmission load surface pressure increases, so meshing wear occurs early and the durability is poor. have.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, the reinforcing rib members R3 and R4 are not formed between the front connecting portion F3 located at the center and the opposing inner sides of the rear connecting portions A1 and A2, and only the front connecting portion F3 located at the center is formed. It is formed as a sprocket tooth meshing portion.

[0006]

[Action]

 Since no reinforcing rib material is formed between the front connecting portion located in the center and the pair of left and right rear connecting portions, the sprocket teeth are formed on the outermost sides of the rear connecting portions A1 and A2. Since it is possible to mesh the full width between the pair of left and right reinforcing rib members R1 and R2 which are spaced apart from each other, and the meshing width is expanded, the meshing transmission load pressure of the sprocket teeth is reduced.

[0007]

【Example】

 FIG. 1 is a plan view of a resin chain link according to the present invention, FIG. 2 is a bottom view of a main part of a table conveyor chain, and FIG. 3 is a sectional view taken along the line AA of FIG. 1, which is formed on a flat upper surface of the chain link 1. At the rear edge of the bottom surface of the loading table 2, sprocket tooth-engaging rear coupling portions 4A and 4B each having a coupling pin insertion hole 3 are vertically projected so as to be spaced apart in a pair, and the front edge portion of the bottom surface of the loading table 2 is provided. The left and right and central front connecting portions 6A, 6B and 6C each having a connecting pin insertion hole 5 into which the pair of sprocket tooth engaging rear connecting portions 4A and 4B are fitted are vertically provided. The resin connecting pin 7 shown in FIG. 4 is connected to the connecting pin insertion hole 3 of the rear connecting portion and the connecting pin insertion portion of the front connecting portion that engages with the sprocket teeth formed on each of the plurality of resin-made table-like chain links. Insert into hole 5 Contact is intended to be engaged drives a chain link 1 respective sprocket in the direction of the arrow mutually linked to form an endless vertical plane cyclic table conveyor chain Figure 2. The head of the connecting pin 7 is provided with a knurling process 7'for retaining, but other known retaining means may be adopted.

Further, in the present invention, only the outermost portions of the rear connecting portions 4A, 4B vertically provided on the bottom surface of the chain link 1 and the left and right connecting portions 6A, 6B located at the outermost portions of the front connecting portions are arranged. The central connecting portion 6C is connected to the reinforcing rib members 8A and 8B, and the central connecting portion 6C does not have a reinforcing rib member to be connected to each of the rear connecting portions 4A and 4B, but is formed in the sprocket tooth engaging portion. Therefore, the sprocket teeth can be meshed with each other without interfering with each other in the entire width between the reinforcing rib members 8A and 8B shown by the diagonal lines in FIG.

[0009]

[Effect of device]

 The present invention increases the number of sprocket tooth engaging rear connecting parts having connecting pin insertion holes of chain links and front connecting parts fitted into the connecting parts, thereby shortening the connecting pin holding interval and connecting. Since the bending deformation of the pin is suppressed and the breakage resistance is increased, not only can the chain link and the connecting pin be made of resin, the chain extension can be suppressed and sufficient tensile strength can be secured. Reinforcing ribs of the vane links are provided so as to project only between the outermost side of the pair of left and right rear connecting parts and the front left and right connecting parts at the outermost positions of the front connecting parts, and the front center connecting part is reinforced. Since the rib material was formed as the meshing part of the sprocket teeth without protruding, the sprocket teeth could mesh over the entire width between the outermost reinforcing rib materials, and the meshing width could be greatly increased. The surface pressure applied to the connection part of the meshing transmission load by the sprocket teeth is remarkably reduced, and a chain with excellent wear resistance and durability can be obtained. Furthermore, the sprocket teeth must also have two rows of teeth. It has the advantage that it can be driven by a conventional single-row sprocket, which is versatile, and its practical effect is remarkable.

[Brief description of drawings]

FIG. 1 is a plan view of a chain link of the present invention.

FIG. 2 is a bottom view of the essential parts of the table conveyor chain of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a plan view of a connecting pin.

FIG. 5 is a bottom view of a conventional table conveyor chain link.

[Explanation of symbols]

 1 chain link 2 loading table 3,5 connecting pin insertion hole 4A, 4B sprocket tooth engagement rear connecting part 6A, 6B front left and right connecting part 6C front center connecting part 8A, 8B reinforcing rib material

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Toshio Takahashi 4-17 96 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Prefecture Tsubakimoto Chain Co., Ltd. (72) Kazuhiro Yagyu 4-17 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka No. 96, Tsubakimoto Chain Co., Ltd. (72) Inventor, Masaaki Ikeda, No. 96 4-17, Tsurumi, Tsurumi-ku, Osaka City, Osaka Prefecture

Claims (1)

[Scope of utility model registration request] 1. A sprocket tooth meshing rear connecting portion which projects rearward at a rear edge portion of a bottom surface of a loading table and is vertically suspended in a pair of left and right, and a pair of sprocket tooth meshing rear portion portions which vertically extend at a front edge portion of a bottom surface of the table. Outermost portions of the left and right connecting portions and the rear connecting portion among the left and right connecting portions and the central connecting portion that form the front connecting portion by providing the connecting pin insertion holes with the front connecting portion that respectively inserts the parts A vertical surface circulation table conveyor chain in which only and are connected by reinforcing ribs, and the central connecting part is formed in the sprocket tooth meshing part.