Fatigue testing device for zipper

Abstract

The utility model provides a fatigue testing device for a zipper, and belongs to the technical field of machinery. The problem that in the prior art, applicability is poor is solved. The fatigue testing device for the zipper comprises a rack, two ends of the rack are fixedly connected to positioning parts, two ends of the zipper can be positioned and connected to the corresponding positioning parts, the fatigue testing device further comprises a guide rail, a sliding block, two positioning blocks and a driving part, the sliding block and the positioning blocks are connected to the guide rail, the two positioning blocks are located on the two sides of the sliding block, and the driving part is connected to the sliding block. The positioning blocks can be connected with a chain in a positioning mode, the sliding block is used for positioning a pull head, the driving piece is fixedly connected to the rack and connected with the sliding block, and the sliding block can horizontally move between the two positioning blocks in a reciprocating mode under the action of the driving piece. The fatigue testing device for the zipper is high in applicability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a fatigue test device of zipper. BACKGROUND

[0002] The fatigue test of zipper is the key step of evaluating the durability and reliability of zipper in the repeated opening and closing process.

[0003] This test is very important to ensure product quality, improve user experience and prolong product life.

[0004] The existing test device usually adopts the driving part connected with the puller, and the chain formed by the cloth tape and the zipper is fixed on the corresponding support. The driving part drives the puller to move back and forth frequently, so as to complete the test work.

[0005] Because the length of the chain cup is not fixed, the end of the chain cup is still in a suspended state after being fixed. During the test, the suspended part of the chain may be loosened or displaced due to accidental touch, affecting the test stability. SUMMARY

[0006] The utility model discloses a fatigue test device of zipper with high applicability and compact structure, aiming at the above problems existing in the prior art.

[0007] The utility model discloses the purpose can be realized through the following technical scheme:

[0008] A fatigue test device of zipper, comprising a rack, characterized in that both ends of the rack are fixedly connected with positioning parts, both ends of the chain can be positioned and connected at the corresponding positioning parts, further comprising guide rails, sliding blocks, positioning blocks and driving parts, the number of positioning blocks is two, the sliding blocks and the positioning blocks are connected on the guide rails, and the two positioning blocks are located on both sides of the sliding block, the positioning blocks can be positioned and connected with the chain, the sliding block is used for positioning the puller, the driving part is fixedly connected on the rack, and the driving part is connected with the sliding block, under the action of the driving part, the sliding block can reciprocate between the two positioning blocks.

[0009] In the fatigue test device of zipper, the positioning part comprises a support and a roller, the lower end of the support is fixedly connected on the rack, and the roller is movably connected at the upper end of the support.

[0010] In the fatigue test device of zipper, the upper end of the support is away from the rack.

[0011] In the fatigue test device of zipper, the number of guide rails is two, and the two guide rails are arranged in parallel on the upper part of the rack, and both ends of the positioning block and the sliding block are connected on the corresponding guide rails.

[0012] In the fatigue testing device of the zipper, the driving member is a cylinder, and a connecting rod is arranged in parallel with the guide rail, the piston rod of the cylinder is fixed to the inner end of the connecting rod, and the connecting rod is fixed to the sliding block.

[0013] In the fatigue testing device of the zipper, two guide blocks are fixed to the frame, and the two ends of the connecting rod are respectively arranged in the corresponding guide blocks.

[0014] In the fatigue testing device of the zipper, the guide block is provided with a bearing.

[0015] In the fatigue testing device of the zipper, the positioning block is provided with a locking positioning structure.

[0016] In the fatigue testing device of the zipper, the locking positioning structure comprises a positioning hole recessed in the positioning block, the positioning hole is provided with a spring and a ball, and the guide rail is provided with a plurality of recessed positioning notches along the length direction of the guide rail; after the positioning block is translated along the guide rail by an external force, the ball can be embedded in any one of the positioning notches under the elastic force of the spring.

[0017] In the fatigue testing device of the zipper, the positioning notches are matched with the outer side of the ball.

[0018] Compared with the prior art, in the fatigue testing device of the zipper, the two ends of the chain are supported at the positioning portions, and the positioning portions are located at the two ends of the frame, so that the two ends of the chain can be lowered outside the frame, the two positioning blocks are connected with the corresponding positions of the chain during the testing operation, the chain between the two positioning blocks is prevented from being displaced during the testing, and the chain end is away from the operation portion under the action of the positioning portion, so that the stability of the testing operation is ensured.

[0019] In addition, the positioning portion, the positioning block and the sliding block are arranged on the upper part of the frame, so that the compactness of the device is effectively improved, and the device has high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective structural schematic view of the fatigue testing device of the zipper.

[0021] Figure 2 is a front structural schematic view of the fatigue testing device of the zipper.

[0022] Figure 3 is a structural schematic view of the locking positioning structure in the fatigue testing device of the zipper.

[0023] In the figure, 1, frame; 2, support; 3, roller; 4, guide rail; 4a, positioning notch; 5, sliding block; 6, positioning block; 6a, positioning hole; 7, driving piece; 8, connecting rod; 9, guide block; 10, spring; 11, ball. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that when a component is referred to as "mounted on" another component, it can be directly mounted on the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. When a component is referred to as "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0027] As shown in Figure 1 and Figure 2 and Figure 3 As shown in the fatigue test device of the zipper, the fatigue test device of the zipper comprises a frame 1, both ends of the frame 1 are fixedly connected with positioning portions, both ends of the chain can be positioned and connected at the corresponding positioning portions, further comprises a guide rail 4, a sliding block 5, a positioning block 6 and a driving piece 7, the number of the positioning blocks 6 is two, the sliding block 5 and the positioning block 6 are connected on the guide rail 4 and the two positioning blocks 6 are located at both sides of the sliding block 5, the positioning block 6 can be positioned and connected with the chain, the sliding block 5 is used for positioning the puller, the driving piece 7 is fixedly connected on the frame 1 and the driving piece 7 is connected with the sliding block 5, under the action of the driving piece 7, the sliding block 5 can reciprocate and translate between the two positioning blocks 6.

[0028] When the test operation is performed, both ends of the chain are connected at the positioning portions, since the positioning portions are located at the end portions of the frame 1, the end portions of the chain can be located outside the frame 1.

[0029] Two positioning blocks 6 are fixed with the chain, so that a testing operation part is formed between the two positioning blocks 6. The sliding block 5 is used for positioning the puller, the puller is engaged with the chain, and the puller reciprocates and translates relative to the chain under the action of the driving member 7, so as to complete the testing operation.

[0030] It can be seen that, during the testing operation, the chain end part in the non-testing state is far away from the operation part, so that the testing operation can be stably carried out.

[0031] Moreover, the length of the chain to be tested is not fixed, and the device can realize the testing operation regardless of the length of the chain.

[0032] That is, regardless of the length of the chain segment of the chain end part, the normal testing operation of the operation part will not be affected.

[0033] The positioning part comprises a support 2 and a roller 3, the lower end of the support 2 is fixedly connected to the rack 1, and the roller 3 is movably connected to the upper end of the support 2.

[0034] The upper end of the support 2 is away from the rack 1.

[0035] Such a structure can make the roller 3 away from the rack 1, and ultimately ensure that the chain end part is outside the rack 1. That is, the chain end part is as far away from the testing operation part as possible.

[0036] The number of the guide rails 4 is two, and the two guide rails 4 are arranged in parallel at the upper part of the rack 1. The positioning blocks 6 and the sliding block 5 are connected to the corresponding guide rails 4 at both ends.

[0037] The arrangement of the two guide rails 4 can further improve the stability of the movement of the sliding block 5.

[0038] The driving member 7 is a cylinder, and further comprises a connecting rod 8 arranged in parallel with the guide rail 4. The piston rod of the cylinder is fixedly connected to the inner end of the connecting rod 8, and the connecting rod 8 is fixedly connected to the sliding block 5.

[0039] The cylinder can drive the connecting rod 8 to smoothly reciprocate and translate during the extension and retraction process.

[0040] The rack 1 is fixedly connected with two guide blocks 9, and the two ends of the connecting rod 8 are respectively connected to the corresponding guide blocks 9.

[0041] The guide blocks 9 can make the connecting rod 8 smoothly reciprocate and translate.

[0042] The guide blocks 9 have bearings.

[0043] The positioning blocks 6 and the guide rails 4 have locking positioning structures.

[0044] The locking positioning structure comprises a positioning hole 6a recessed on the positioning block 6, the positioning hole 6a having a spring 10 and a ball 11, the guide rail 4 having a plurality of recessed positioning notches 4a along the length direction of the guide rail 4, and the ball 11 being capable of being embedded in any one of the positioning notches 4a under the elastic force of the spring 10 after the positioning block 6 is translated along the guide rail 4 under the external force.

[0045] The stable positioning connection between the positioning block 6 and the guide rail 4 can be realized after the ball 11 in the positioning block 6 is embedded in the corresponding positioning notch 4a after the positioning block 6 is pushed under the external force.

[0046] The positioning notch 4a is matched with the outer side of the ball 11.

[0047] The inner wall of the positioning notch 4a is in contact with the outer side of the ball 11, and the positioning stability is finally improved.

[0048] The fatigue test device of the zipper is provided with the positioning parts at the two ends of the rack, and the two ends of the chain are supported on the positioning parts, so that the two ends of the chain can be lowered outside the rack, the two positioning blocks are connected with the corresponding positions of the chain during the test operation, the chain between the two positioning blocks is prevented from being displaced during the test, and the chain is prevented from being displaced between the two positioning blocks during the test. During the test, the puller is connected to the sliding block and can reciprocate on the chain under the action of the driving member. It can be seen that the two positioning blocks form a working part for fatigue test during the test, and the chain end is away from the working part under the action of the positioning part, so that the stability of the test operation is ensured.

[0049] In addition, the positioning part, the positioning block and the sliding block are arranged on the upper part of the rack, so that the compactness of the device is effectively improved, and the device has high practical value.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0051] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application, and any appropriate changes and variations of the above embodiments within the scope of the present application are within the scope of the present application.

Claims

1. A zipper fatigue testing device, comprising a frame, characterized in that: Both ends of the frame are fixedly connected to the positioning parts, and both ends of the chain can be positioned and connected at the corresponding positioning parts. It also includes a guide rail, a slider, a positioning block and a driving member. There are two positioning blocks. The slider and the positioning block are both connected to the guide rail and the two positioning blocks are located on both sides of the slider. The positioning block can be positioned and connected to the chain. The above-mentioned slider is used to position the pulling head. The above-mentioned driving member is fixedly connected to the frame and the driving member is connected to the slider. Under the action of the driving member, the above-mentioned slider can reciprocate between the two positioning blocks.

2. The zipper fatigue testing device according to claim 1, characterized in that: The positioning part includes a bracket and a roller. The lower end of the bracket is fixedly connected to the frame, and the roller is movably connected to the upper end of the bracket.

3. The zipper fatigue testing device according to claim 2, characterized in that: The upper end of the bracket is away from the frame.

4. The zipper fatigue testing device according to claim 3, characterized in that: There are two guide rails, which are arranged in parallel on the upper part of the frame. The positioning block and both ends of the sliding block are connected to the corresponding guide rails.

5. The zipper fatigue testing device according to claim 4, characterized in that: The driving member is a cylinder, and further comprises a connecting rod arranged parallel to the guide rail. The piston rod of the cylinder is fixedly connected to the inner end of the connecting rod, and the connecting rod is fixedly connected to the sliding block.

6. The zipper fatigue testing device according to claim 5, characterized in that: Two guide blocks are fixedly connected to the frame, and both ends of the connecting rod are respectively passed through and connected to the corresponding guide blocks.

7. The zipper fatigue testing device according to claim 6, characterized in that: A bearing is provided in the guide block.

8. The zipper fatigue testing device according to claim 7, characterized in that: A locking and positioning structure is provided between the positioning block and the guide rail.

9. The zipper fatigue testing device according to claim 8, characterized in that: The locking and positioning structure includes a recessed positioning hole on the positioning block, wherein a spring and a round ball are provided in the positioning hole. The guide rail has a plurality of recessed positioning notches along its length direction. After an external force is applied to cause the positioning block to translate along the guide rail, the round ball can be embedded in any positioning notch under the elastic force of the spring.

10. The zipper fatigue testing device according to claim 9, characterized in that: The positioning notch matches the outer side of the ball.

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