JPH0533801Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a joint for a conveyor belt, and more specifically, to the structure of a joint in a conveyor belt made of filament fabric suitable for conveying paste-like substances. It is.

Conventional technology Conveyor belts are used to convey pasty materials such as polyvinyl chloride film raw materials and highly sticky confectionery materials, and are woven from multifilament to prevent stains caused by pasty materials adhesion. A belt is used. The following method is known as a means for forming a joint for such a conveyor belt made of filament fabric.

A weft filament located slightly inside from the end of the filament fabric is extracted, a predetermined number of warp filaments are arranged in a sagging pattern to prepare a joint forming area, and a synthetic resin spiral wire prepared separately is attached to this joint forming area. A method in which the warp filaments are attached in an intertwined state, and then the ends of the warp filaments are folded back and overlapped with the main body of the filament fabric and sewn by machine.

A method of sewing base fabric with joints woven on a narrow loom to the ends of filament fabric using a sewing machine.

As shown in Fig. 4, the weft filaments are pulled out over a predetermined width from the ends of the filament fabric, and the tips of the warp filaments arranged in a sagging pattern are folded back to form a joint loop. A method of binding the ends of the main body part of filament fabric.

Problems that the invention aims to solve: The method of sewing the ends of folded warp filaments and the base fabric with joints onto the tip of the main body of the filament fabric with a sewing machine has a problem in that the tension acting on the conveyor belt after joining and the object to be transported are There are also disadvantages in that the sewing thread may be cut due to friction between the sewing thread and the conveyor belt, and the constituent fibers of the cut sewing thread may be mixed into the conveyed object. In addition, in the joint forming method illustrated in Fig. 4, which has been commonly used for joints such as dryer canvas, only one of the four warp filaments constituting the minimum unit of the joint has a joint loop. Because of this, the strength of the joint part is less than 25% of that of the main body of the conveyor belt, which has the disadvantage that the joint part is cut first even though the main body part is not damaged.

Means for Solving the Problems In view of the above object, the present invention provides a conveyor belt made of a filament fabric having a double weave structure, in which a predetermined distance from the longitudinal end of the main body of the filament fabric is provided. A weft filament is pulled out along its length to form a sag-like arrangement region of warp filaments, and the ends of the first to third warp filaments occupying adjacent positions in the sag-like arrangement region are folded back to form joining loops. After forming,
The folded ends of the first to third warp filaments are tied into the main body portion of the filament fabric,
Next, the fourth warp filament disposed adjacent to the third warp filament is folded back so as to surround the weft filament located at the most extreme position in the sagging arrangement region of the warp filament to form the filament fabric. The smallest unit of the joint is constructed by binding the three joining loops formed by folding back the first to third warp filaments into an integral structure. The gist of this paper is a joint for a conveyor belt.

Function Six of the eight warp filaments that make up the smallest unit of the joint work together to form three joining loops, and the wound ends of the remaining two warp filaments have a double weave structure. It functions as a weft presser for the two weft filaments located at the leading edge of a filament fabric having a woven fabric.

In addition, warp filaments that do not constitute joining loops and weft holders are pulled out to an appropriate length from the ends of the fabric, and finally cut to form joining loops and weft holders, and then folded back. This creates a path for the warp filaments to be wound into the main body of the fabric. The texture of the ends and body portion of the fabric is thus substantially the same.

Embodiment FIG. 1 shows the structure of the conveyor belt according to the present invention as a sectional view along the forming part of the joining loop, and FIG. 2 shows the structure of the conveyor belt as a sectional view along the forming part of the weft yarn presser It is shown as a sectional view. Moreover, FIG. 3 is an enlarged perspective view of the main parts of the joint.

As seen in these drawings, the minimum unit of the joint of the conveyor belt according to the present invention is 8 which extends from the longitudinal end of the main body portion 10a of the multifilament fabric 10 having a double weave structure while maintaining a parallel arrangement state. Book warp filaments 1, 2, 3,
It consists of 4, 5, 6, 7 and 8. That is, when forming the joint, first, the weft filaments 9, 9 are stretched over a predetermined length from the longitudinal end of the main body portion 10a of the multifilament fabric 10.
. . . and the warp filaments 1, 2,
Ends of the first to third warp filaments 1, 2, and 3 forming sagging arrangement parts 3, 4, 5, 6, 7, and 8 and occupying adjacent positions in the sagging arrangement parts; is folded back and wrapped around a separately prepared loop forming core wire 11 to form a joining loop 1.
a, 2a and 3a are formed. In this state, the first
The folded ends 1b, 2b, and 3b of the third warp filaments 1, 2, and 3 are folded into the main body portion 10a of the multifilament fabric 10. At this time, in order to form passages for the folded ends 1b, 2b, and 3b of the first to third warp filaments and to prevent an increase in the thickness of the joint end of the conveyor belt, the second weave structure is 1st to 3rd
fifth to seventh warp filaments 5, 6 disposed opposite to warp filaments 1, 2, and 3;
and 7 are attached to the main body part of the fabric as shown by the two-dot chain line in FIGS. , B and C to the outside of the tissue. After the first to third warp filaments 1, 2, and 3 are completed, these warp filaments are connected to the A, B
and cut at point C. Next, a fourth warp filament 4 disposed adjacent to the third warp filament 3 is attached to the warp filament 1,
The weft filaments 9a, 9a located at the most extreme positions in the sagging arrangement parts 2, 3, and 4 are folded back to surround them, and the leading end portions 4a are folded into the main body portion 10a of the multifilament fabric 10. At this time, the tip portion of the eighth warp filament 8, which is disposed opposite to the fourth warp filament 4 in the double weave structure, is Pull it out of the tissue from point D of the main body of the fabric as indicated by the dotted chain line. This warp filament 8 is cut at the point D after the fourth warp filament 4 is completed.

3 formed by folding back the first to third warp filaments 1, 2 and 3.
four joining loops 1a, 2a and 3a;
The minimum unit of the joint is formed from the weft presser 4b formed by folding back the warp filaments 4. Thereafter, following the same procedure, the joining loops 1a,
2a, 3a and the forming operation of the weft holding loop 4b are repeated alternately to complete the formation of the joint at one connecting end of the conveyor belt. At the other connecting end of the conveyor belt, a joining loop and a weft presser are formed over the entire width in the same manner as described above.
At this time, the joining loops 1a, 2a and 3a formed on one edge of the multifilament fabric 10 are connected to the weft presser 4b formed on the other edge.
The relative positions of the joining loop and the weft presser at both end edges are adjusted so that they face each other. Joining loops 1a, 2a over the entire width of the conveyor belt
and 3a are formed, the joining loops 1a, 2a are pulled out while pulling out the loop forming core wire 11.
Apply instant adhesive to the joining loops 1a and 3a, and use a suitable clamping tool such as radio pliers to
2a and 3a are tightened to form a joint loop 12 glued into a unitary structure. The thus formed conveyor belt with joint loops 12, 12... is wound around a group of drive rollers (not shown), and is arranged at both end edges of the conveyor belt while maintaining substantially the same arrangement pitch. The above joint loops 12, 12...
The work of joining the conveyor belts is completed by making them bite into each other and inserting a joining core wire (not shown) into the joint loop.

Although the embodiments of the present invention have been described above as examples, the scope of rights of the present invention should not be interpreted to be limited based on the description of the above embodiments, and can include many modifications. . For example, in the above embodiment, multifilament yarn is used as the material for forming the double-woven fabric in order to prevent stains due to adhesion of highly sticky objects to be transported, but depending on the type of objects to be transported, Monofilament yarns can also be used.

Effects of the invention As can be understood from the above explanation, in the present invention, three of the eight warp filaments arranged adjacently in a double weave structure are made to function as constituent members of the joint. Compared to conventional conveyor belts in which only one of the four warp filaments functions as a component of the joint, the strength of the joint can be dramatically improved.
In this way, the strength of the joints of the conveyor belt is significantly increased, and a stable conveying function can be exhibited over a long period of time. The joint portion according to the present invention has substantially the same structure as the main body portion of the fabric,
The surface characteristics are also the same on both the front and back sides of the conveyor belt. Furthermore, since the present invention allows for mechanical binding processing, productivity is extremely high. In addition, since the present invention does not use sewing machine stitching as a means of forming the joint, the threads of the sewing machine cut off due to abrasion or the like are mixed into the conveyed material, which is a problem with conventional conveyors. It can also exhibit remarkable effects as a means of solving problems found in belts.

[Brief explanation of the drawing]

FIG. 1 shows the structure of the conveyor belt according to the present invention as a cross-sectional view along the forming part of the joining loop, and FIG. 2 shows the structure of the conveyor belt as a cross-sectional view along the forming part of the weft presser. It is shown as follows. Moreover, FIG. 3 is an enlarged perspective view of the main parts of the joint. Furthermore, FIG. 4 is a sectional view illustrating a joint portion of a conventional conveyor belt. 1, 2, 3, 4, 5, 6, 7, 8... warp filament, 9, 9... weft filament, 10...
...Filament fabric, 1a, 2a, 3a...Joining loop, 4b...Weft presser.

Claims (1)

[Scope of utility model registration request] In a conveyor belt manufactured from a filament fabric having a double weave structure, the weft filaments are extracted over a predetermined length from the longitudinal ends of the main body of the filament fabric, and the warp filaments are arranged in a sagging pattern. After forming a joining loop by folding back the ends of the first to third warp filaments occupying adjacent positions in the sagging arrangement region, the folded ends of the first to third warp filaments are A fourth warp filament arranged adjacent to the third warp filament is inserted into the main body portion of the filament woven fabric, and a weft filament located at the most extreme position in the sagging arrangement region of the warp filaments is Folding the filament fabric so as to surround it and binding it to the main body portion of the filament fabric, and then gluing the three joining loops formed by folding back the first to third warp filaments into an integral structure. A joint for a conveyor belt, characterized in that the minimum unit of the joint is constituted by.