Tooth arrangement mold capable of preventing plastic steel zipper from running on rib

Abstract

The utility model relates to the technical field of zipper production molds, in particular to a tooth arrangement mold capable of preventing a plastic-steel zipper from running ribs, which comprises an upper mold and a lower mold, and the joint surface of the upper mold and the lower mold is provided with a rib stepping cavity used for placing zipper cloth belt ribs and an injection molding cavity used for injection molding of plastic-steel zipper teeth. The two sides of the top face of the lower die body in the width direction are provided with limiting check blocks used for abutting against zipper cloth belts, and check block through holes matched with the limiting check blocks are formed in the bottom face of the upper die body. A traditional cloth belt groove is omitted, the cloth rib grooves used for containing the step ribs on the zipper cloth belt are correspondingly formed, meanwhile, the limiting check blocks are arranged on the two sides of the zipper cloth belt, the zipper cloth belt is jacked through the limiting check blocks, and therefore it is guaranteed that the zipper cloth belt cannot be bent outwards in the tooth arranging process, and the zipper cloth belt is prevented from being bent outwards. And the step ribs are accommodated in the step rib grooves by using smaller extrusion force, so that the phenomenon of rib running during tooth arrangement is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper production molds, and more specifically to a zipper mold capable of preventing the tendons of a plastic-steel zipper from running. Background Art

[0002] At present, the arrangement of the plastic-steel zipper is a more important step in the manufacturing process of the plastic-steel zipper. It is arranged through continuous molds, then the chain is assembled, and then the subsequent processes such as sizing are carried out.

[0003] There are generally two types of existing zipper molds. One is that the joint surface between the upper and lower molds of the zipper mold is provided with a tape cavity for placing the zipper tape and an injection cavity for injection molding the plastic steel chain teeth. The other is that the joint surface between the upper and lower molds of the zipper mold is only provided with an injection cavity for injection molding the plastic steel chain teeth.

[0004] In the former, the tape cavity is composed of the tape grooves of the upper and lower molds. In order to close the mold, the depth of the tape groove is usually half of the thickness of the tape. When the tape is placed in the tape groove of the lower mold before closing the mold, since the tape is made of fiber elastic material and the tape is not completely sunk into the tape groove, the tape is easy to run out of the tape groove, which also causes the reinforcement on the tape to move.

[0005] In the latter case, since there are no tape grooves, to prevent the tendons from running, a high tension is usually applied to both ends of the tape to straighten the tendons. However, this high tension can cause significant elastic or plastic deformation of the tendons, or the tape may be too stiff to straighten. When this large elastic deformation occurs, the tendons shrink after the tape is placed, causing the fabric to tighten during assembly, resulting in poor assembly or even failure. Furthermore, the inconsistent elastic deformation of the tapes between batches leads to large fluctuations in the fabric assembly tension, which is detrimental to product stability. When the tendons undergo plastic deformation, they become longer than their initial state, which in turn reduces the curvature of the tape, resulting in poor assembly or even failure. Utility Model Content

[0006] The purpose of the utility model is to provide a zipper mold capable of preventing the plastic-steel zipper from running, so as to solve the above-mentioned existing problems.

[0007] The utility model adopts the following technical solutions:

[0008] A mold for preventing the running of ribs in a plastic-steel zipper comprises an upper mold and a lower mold. The joint surface of the upper mold and the lower mold is provided with a rib cavity for placing the zipper tape reinforcement and an injection cavity for injection molding the plastic-steel chain teeth. Limit blocks for holding the zipper tape are provided on both sides of the top surface of the lower mold in the width direction. The bottom surface of the upper mold is provided with a block through hole that cooperates with the limit block. When the upper mold and the lower mold are closed, the limit block penetrates into the block through hole.

[0009] Furthermore, the rib cavity includes an upper rib groove and a lower rib groove, the upper rib groove is arranged on the bottom surface of the upper mold, and the lower rib groove is arranged on the top surface of the lower mold.

[0010] Furthermore, the injection molding cavity includes an upper chain tooth groove and a lower chain tooth groove, the upper chain tooth groove is arranged on the bottom surface of the upper mold, and the lower chain tooth groove is arranged on the top surface of the lower mold.

[0011] Furthermore, the limit blocks include several left limit blocks and several right limit blocks, the left limit blocks are arranged at equal intervals on the left side of the lower mold top surface in the width direction, and the right limit blocks are arranged at equal intervals on the right side of the lower mold top surface in the width direction.

[0012] Furthermore, the limit stopper is fixedly welded to the top surface of the lower mold.

[0013] Preferably, the limit stopper is detachably fixedly connected to the top surface of the lower mold, and the stopper through hole is a strip-shaped through groove.

[0014] Preferably, the height of the limit stopper is greater than the thickness of the zipper tape.

[0015] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model eliminates the traditional tape groove and correspondingly provides a tape groove for accommodating the ribs on the zipper tape. At the same time, limit blocks are provided on both sides of the zipper tape. The limit blocks support the zipper tape to ensure that the zipper tape does not bend outward during the zippering process. A smaller extrusion force is used to accommodate the ribs in the rib groove, thereby avoiding the rib running phenomenon during zippering.

[0017] 2. In order to improve the versatility of the present invention, the limit block and the top surface of the lower mold can be fixedly connected by a detachable method such as bolt locking or snap fastening. The through hole of the block is a strip-shaped through groove, so that the limit block can be freely adjusted in the left and right width directions of the top surface of the lower mold to match zipper tapes of various widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a top view of the lower mold of the utility model.

[0019] Figure 2 It is the left view of the lower mold of the utility model.

[0020] Figure 3 This is a bottom view of the upper die of the utility model.

[0021] Figure 4 This is another top view of the lower mold of the present invention.

[0022] Figure 5 This is another bottom view of the upper die of the present invention.

[0023] Among them, the numbers in the figure are: upper mold 10, lower mold 20, upper step rib groove 11, upper chain tooth groove 12, lower reinforcement groove 21, lower chain tooth groove 22, left limit block 31, right limit block 32, block through hole 40. DETAILED DESCRIPTION

[0024] The specific implementation of the embodiment of the present utility model is described below with reference to the accompanying drawings.

[0025] Reference Figure 1 and Figure 3 A mold for preventing the ribs of a plastic-steel zipper from running includes an upper mold 10 and a lower mold 20. The joint surface between the upper and lower molds 10 and 20 is provided with a rib cavity for accommodating the zipper tape reinforcement and an injection mold cavity for molding the plastic-steel chain elements. The rib cavity includes an upper rib groove 11 and a lower rib groove 21. The upper rib groove 11 is provided on the bottom surface of the upper mold 10, and the lower rib groove 21 is provided on the top surface of the lower mold 20. The injection mold cavity includes an upper chain tooth groove 12 and a lower chain tooth groove 22. The upper chain tooth groove 12 is provided on the bottom surface of the upper mold 10, and the lower chain tooth groove 22 is provided on the top surface of the lower mold 20.

[0026] Reference Figure 1 and Figure 3 Limit blocks for supporting the zipper tape are provided on both sides of the top surface of the lower mold 20 in the width direction. The height of the limit blocks is greater than the thickness of the zipper tape. The bottom surface of the upper mold 10 is provided with a block through hole 40 that cooperates with the limit blocks. When the upper mold 10 and the lower mold 20 are closed, the limit blocks penetrate into the block through hole 40.

[0027] Specifically, refer to Figure 1 and Figure 2 In this embodiment, the limit stops include several left limit stops 31 and several right limit stops 32. The left limit stops 31 are evenly spaced on the left side of the top surface of the lower mold 20 in the width direction, and the right limit stops 32 are evenly spaced on the right side of the top surface of the lower mold 20 in the width direction. The left limit stops 31 and the right limit stops 32 are both strip-shaped blocks of the same size and specifications. The limit stops are preferably welded to the top surface of the lower mold 20 to ensure their firmness and reliability. The spacing between the left limit stops 31 and the right limit stops 32 depends on the width of the zipper tape. The number, diameter, and layout of the block through-holes 40 are coordinated with the limit stops.

[0028] The present invention eliminates the traditional tape groove and correspondingly provides a tape groove for accommodating the ribs on the zipper tape. At the same time, a left limit block 31 and a right limit block 32 are provided on both sides of the zipper tape. The zipper tape is supported by the limit blocks to ensure that the zipper tape does not bend outward during the zippering process, and a smaller extrusion force is used to accommodate the ribs in the rib groove, thereby avoiding the rib running phenomenon during zippering.

[0029] In addition, refer to Figure 4 and Figure 5 In order to improve the versatility of the present invention, in addition to the fixed welding method, the limit block and the top surface of the lower mold 20 can also be fixedly connected by detachable methods such as bolt locking or snap fastening. For example, the limit block is provided with an L-shaped limit block with a bolt hole, and the block through hole 40 is a strip-shaped through groove. The lower mold 20 is provided with a plurality of bolt holes or strip-shaped bolt holes, thereby realizing the free adjustment of the limit block in the left and right width directions of the top surface of the lower mold 20 to match zipper tapes of various width specifications.

[0030] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A mold for preventing plastic-steel zippers from running, comprising an upper mold and a lower mold, characterized in that: The joint surface of the upper mold and the lower mold is provided with a reinforcement cavity for placing the zipper tape reinforcement and an injection cavity for injection molding the plastic steel chain teeth. The top surface of the lower mold is provided with limit blocks on both sides in the width direction for supporting the zipper tape, and the bottom surface of the upper mold is provided with a block through hole that cooperates with the limit block.

2. The mold for preventing the plastic-steel zipper from running according to claim 1, characterized in that: The rib cavity includes an upper rib groove and a lower rib groove, the upper rib groove is arranged on the bottom surface of the upper mold, and the lower rib groove is arranged on the top surface of the lower mold.

3. The mold for preventing plastic-steel zipper from running according to claim 1, characterized in that: The injection molding cavity includes an upper chain tooth groove and a lower chain tooth groove, the upper chain tooth groove is arranged on the bottom surface of the upper mold, and the lower chain tooth groove is arranged on the top surface of the lower mold.

4. The mold for preventing the plastic-steel zipper from running according to claim 1, characterized in that: The limit blocks include several left limit blocks and several right limit blocks. The left limit blocks are arranged at equal intervals on the left side of the lower mold top surface in the width direction, and the right limit blocks are arranged at equal intervals on the right side of the lower mold top surface in the width direction.

5. The mold for preventing plastic-steel zipper from running according to claim 1, characterized in that: The limit stopper is fixedly welded to the top surface of the lower die.

6. The mold for preventing the plastic-steel zipper from running according to claim 1, characterized in that: The limit stopper is detachably fixedly connected to the top surface of the lower die, and the stopper through hole is a strip-shaped through groove.

7. The mold for preventing the plastic-steel zipper from running according to claim 1, characterized in that: The height of the limit stopper is greater than the thickness of the zipper tape.

Images