Zipper reciprocating fatigue test mechanism

Abstract

The utility model relates to a kind of zipper reciprocating fatigue test mechanism in zipper fatigue test field, including first base, the side of first base is equipped with second base, the top of first base is equipped with first motor, the rotor front end of first motor is coaxially connected with first cam, the outside of slide bar frame is equipped with slide base, the front of first cam is connected with hinged seat, the inside of hinged seat is inserted with screw rod by bearing, the bottom of slide base is connected with mounting seat, the both sides in the inside of mounting seat are inserted with inserting rod, the top rear side of mounting seat is equipped with second motor, the rotation of first cam is driven by first motor, so that the left and right reciprocating motion of slide base can be driven by transmission rod, second cam is rotated by second motor simultaneously, so that the small amplitude up-down vibration of bottom plate and clamping plate can be pushed by second cam, the distortion of test result caused by traditional one-way test can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of zipper fatigue testing, specifically to a zipper reciprocating fatigue testing mechanism. Background Technology

[0002] In the field of zipper product performance testing, fatigue testing is a core step in assessing its durability. Traditional testing equipment typically employs a unidirectional motion mode, using a motor to drive a slider in linear reciprocating motion to simulate the opening and closing of a zipper. However, this basic testing method differs significantly from the stress state of a zipper in actual use, making it difficult to accurately reflect the product's performance under complex operating conditions. As consumers' demands for zipper lifespan and reliability continue to increase, existing testing methods are gradually revealing technical bottlenecks such as insufficient accuracy and limited scenario simulation, hindering the accurate assessment of product quality.

[0003] The structural limitations of existing testing equipment are mainly reflected in three aspects: First, the motion dimension is singular, only capable of horizontal reciprocating motion, failing to reproduce the complex stress state of the zipper caused by human activity, making it difficult to effectively identify potential failure modes; second, energy transfer efficiency is low, with traditional transmission mechanisms experiencing significant energy loss in unidirectional motion and unable to achieve simultaneous multi-directional stress loading through motion coupling, thus extending the testing cycle; third, the equipment stability is insufficient, as the inertial force generated by unidirectional motion is not effectively balanced, and long-term operation easily leads to mechanical vibration and component wear, affecting testing accuracy and increasing equipment maintenance frequency. These technical defects collectively cause deviations between test results and actual usage performance, making it difficult to meet the industry's testing requirements for high-quality zippers. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned shortcomings by providing a zipper reciprocating fatigue testing mechanism. During testing, the mechanism can drive the zipper to vibrate up and down while performing left-right reciprocating motion, thus solving the technical problem that the existing technology has a single motion dimension during testing, resulting in inaccurate test data and extended testing cycles.

[0005] The objective of this utility model is achieved through the following means:

[0006] A zipper reciprocating fatigue testing mechanism includes a first base, a second base mounted on the side of the first base, a first motor mounted on the top of the first base, a first cam coaxially connected to the front end of the rotor of the first motor, a slide bar bracket mounted on the front top of the second base, a slide block sleeved on the outside of the slide bar bracket, a hinge seat connected to the front of the first cam, a screw inserted into the interior of the hinge seat via a bearing, an adjusting block screwed onto the outside of the screw, a transmission rod hinged to the front of the adjusting block via a bearing, the other end of the transmission rod connected to the outside of the slide block via a bearing, a mounting base connected to the bottom of the slide block, insert rods inserted into both sides of the interior of the mounting base, a second motor mounted on the rear top of the mounting base, a second cam coaxially connected to the rotor of the second motor, a base plate connected to the bottom end of each insert rod, clamping plates connected to the front and rear sides of the bottom of the base plate, and a spring sleeved on the lower outer side of each insert rod.

[0007] Furthermore, the height of the first base is greater than the height of the second base, and positioning through holes are provided at the four corners of the interior of the second base, and through grooves are provided at the interior edge of the second base to facilitate transmission.

[0008] Furthermore, the first cam has grooves on both the upper and lower sides inside, and slide bars are movably inserted into the grooves. A connecting plate is installed on the rear side of the adjusting block.

[0009] Furthermore, mounting bolts are inserted into both the upper and lower sides of the connecting plate. The rear of each mounting bolt is screwed into the interior of the slide bar. Both the slide bar and the slide groove are trapezoidal in shape. By rotating the screw, the adjusting block can be moved left and right, thereby adjusting the position of the adjusting block relative to the center of the first cam. This allows for adjustment of the torque of the eccentric rotation of the cam, which in turn changes the movement speed of the slide block. This facilitates the adjustment of the speed of the zipper's left and right movement, improving the adaptability and flexibility of the test.

[0010] Furthermore, the upper and lower ends of the spring are respectively connected to the inner side of the mounting base and the base plate. The clamping plate is T-shaped, and a limiting bolt is screwed onto the lower inner side of the front clamping plate. The added limiting bolt improves the clamping firmness of the clamping plate on the zipper.

[0011] Furthermore, an arc-shaped contact piece is attached to the rim surface of the second cam, and a grid-like anti-slip texture is formed on the contact surface of the contact piece. An elastic rubber layer is laid on the opposite inner surfaces of the clamping plate, and transverse anti-slip ribs are pressed onto the surface of the elastic rubber layer.

[0012] The beneficial effects of this invention are as follows: The first motor drives the rotation of the first cam, which in turn drives the slide block to reciprocate left and right via the transmission rod. This allows for repeated movement after the zipper is clamped by the clamping plate, enabling fatigue testing of the zipper. Simultaneously, the second motor drives the rotation of the second cam, which in turn pushes the base plate and clamping plate to vibrate slightly up and down. This allows for precise replication of the complex stress state of the zipper under actual use due to human activity. Furthermore, the multi-dimensional motion trajectory effectively exposes potential failure points of the zipper under complex stress environments, avoiding the distortion of test results caused by traditional unidirectional testing. The synchronous coupling mechanism of horizontal and vertical motion allows for simultaneous simulation of lateral stretching and longitudinal friction of the zipper in a single test cycle, shortening the single-cycle test time, ensuring efficient energy transfer, reducing energy loss, and improving the overall operational stability of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the first motor and the first cam structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the first cam structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the upper surface structure of the second base of this utility model;

[0017] Figure 5 This is a schematic diagram of the bottom structure of the slide block of this utility model;

[0018] Figure 6 This is a schematic diagram of the second motor structure of this utility model;

[0019] Figure 7 This is a schematic diagram of the clamping plate structure of this utility model;

[0020] In the diagram, 1. First base; 2. Second base; 3. First motor; 4. Slide frame; 5. Slide seat; 6. First cam; 7. Hinge seat; 8. Screw; 9. Adjusting block; 10. Transmission rod; 11. Mounting seat; 12. Second motor; 13. Second cam; 14. Insert rod; 15. Base plate; 16. Spring; 17. Clamping plate; 18. Limit bolt; 19. Connecting plate; 20. Slide groove; 21. Slide bar; 22. Assembly bolt. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] In this embodiment, refer to Figures 1-7 The specific implementation of a zipper reciprocating fatigue testing mechanism includes a first base 1, a second base 2 mounted on the side of the first base 1, a first motor 3 mounted on the top of the first base 1, the height of the first base 1 being greater than the height of the second base 2, positioning through holes being provided at the four corners of the interior of the second base 2, and through slots being provided at the interior edge of the second base 2, a first cam 6 coaxially connected to the front end of the rotor of the first motor 3, a slide bar bracket 4 mounted on the front top of the second base 2, a slide block 5 sleeved on the outside of the slide bar bracket 4, and the front part of the first cam 6 connected to... A hinge seat 7 is connected, and a screw 8 is inserted into the interior of the hinge seat 7 via a bearing. An adjusting block 9 is screwed onto the outside of the screw 8. A transmission rod 10 is hinged to the front side of the adjusting block 9 via a bearing. The other end of the transmission rod 10 is connected to the outside of the slide 5 via a bearing. A mounting base 11 is connected to the bottom of the slide 5. Insert rods 14 are inserted into both sides of the interior of the mounting base 11. A second motor 12 is mounted on the top rear side of the mounting base 11. The rotor of the second motor 12 is coaxially connected to a second cam 13. The bottom ends of the insert rods 14 are all connected to a base plate 15. The bottom is connected to clamping plates 17 on both the front and rear sides. A spring 16 is sleeved on the lower outer side of the insertion rod 14. The first motor 3 drives the first cam 6 to rotate, which in turn drives the slide 5 to reciprocate left and right through the transmission rod 10. This allows the clamping plates 17 to repeatedly move after clamping the zipper, thus enabling fatigue testing of the zipper. At the same time, the second motor 12 drives the second cam 13 to rotate, which in turn drives the bottom plate 15 and clamping plates 17 to vibrate slightly up and down. This allows the clamping plates 17 to move the zipper left and right while simultaneously moving it up and down slightly, accurately replicating the complex stress state of the zipper caused by human activity during actual use. The multi-dimensional motion trajectory can effectively expose the potential failure points of the zipper under complex stress environments, avoiding the distortion of test results caused by traditional unidirectional testing. The synchronous coupling mechanism of horizontal and vertical motion allows the lateral stretching and longitudinal friction simulation of the zipper to be completed simultaneously in a single test cycle, shortening the single-cycle test time, ensuring efficient transfer of motion energy, reducing energy loss, and improving the overall operational stability of the equipment.

[0023] The first cam 6 has a sliding groove 20 on both the upper and lower sides inside. A sliding strip 21 is movably inserted into the sliding groove 20. A connecting plate 19 is installed on the rear side of the adjusting block 9. An assembly bolt 22 is inserted into both the upper and lower sides inside the connecting plate 19. The rear of the assembly bolt 22 is screwed into the sliding strip 21. The sliding strip 21 and the sliding groove 20 are both trapezoidal in shape.

[0024] The upper and lower ends of the spring 16 are connected to the inner sides of the mounting base 11 and the base plate 15, respectively. The clamping plate 17 is T-shaped. The lower inner side of the front clamping plate 17 is screwed with a limit bolt 18. The rim surface of the second cam 13 is covered with an arc-shaped contact piece. The contact surface of the contact piece is provided with a grid-like anti-slip texture. The inner surfaces of the clamping plates 17 are covered with an elastic rubber layer. The surface of the elastic rubber layer is pressed with transverse anti-slip ribs.

[0025] This solution uses a first motor 3 to drive the rotation of the first cam 6, which in turn drives the slide 5 to reciprocate left and right via the transmission rod 10. This allows the zipper to move repeatedly after being clamped by the clamping plate 17, thus enabling fatigue testing of the zipper. Simultaneously, a second motor 12 drives the rotation of the second cam 13, which in turn causes the base plate 15 and the clamping plate 17 to vibrate slightly up and down. This allows the clamping plate 17 to move the zipper left and right while simultaneously performing slight up and down movements, accurately replicating the complex stress state of the zipper caused by human activity during actual use. The multi-dimensional motion trajectory can effectively expose potential failure points of the zipper under complex stress environments, avoiding the distortion of test results caused by traditional unidirectional testing. Furthermore, the synchronous coupling mechanism of horizontal and vertical movements allows for the simultaneous simulation of lateral stretching and longitudinal friction of the zipper in a single test cycle, shortening the single-cycle test time, ensuring efficient transfer of motion energy, reducing energy loss, and improving the overall operational stability of the equipment.

[0026] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A zipper reciprocating fatigue testing mechanism, comprising a first base, characterized in that: A second base is mounted on the side of the first base. A first motor is mounted on the top of the first base. A first cam is coaxially connected to the front end of the rotor of the first motor. A slide bar frame is mounted on the front top of the second base. A slide block is fitted on the outside of the slide bar frame. A hinge seat is connected to the front of the first cam. A screw is inserted into the interior of the hinge seat through a bearing. An adjusting block is screwed onto the outside of the screw. A transmission rod is hinged to the front of the adjusting block through a bearing. The other end of the transmission rod is connected to the outside of the slide block through a bearing. A mounting base is connected to the bottom of the slide block. Insert rods are inserted into both sides of the interior of the mounting base. A second motor is mounted on the rear top of the mounting base. A second cam is coaxially connected to the rotor of the second motor. A base plate is connected to the bottom end of each insert rod. Clamping plates are connected to the front and rear sides of the bottom of the base plate. A spring is fitted on the lower outside of each insert rod.

2. The zipper reciprocating fatigue testing mechanism according to claim 1, characterized in that: The height of the first base is greater than the height of the second base. The second base has positioning through holes at all four corners and through grooves at its inner edge.

3. The zipper reciprocating fatigue testing mechanism according to claim 1, characterized in that: The first cam has grooves on both the upper and lower sides inside, and slide bars are movably inserted into the grooves. A connecting plate is installed on the rear side of the adjusting block.

4. The zipper reciprocating fatigue testing mechanism according to claim 3, characterized in that: The connecting plate has mounting bolts inserted on both the upper and lower sides inside, and the rear of each mounting bolt is screwed into the inside of the slide bar. Both the slide bar and the slide groove are trapezoidal in shape.

5. The zipper reciprocating fatigue testing mechanism according to claim 1, characterized in that: The upper and lower ends of the spring are respectively connected to the inner side of the mounting base and the base plate. The clamping plate is T-shaped, and a limit bolt is screwed onto the lower inner side of the front clamping plate.

6. The zipper reciprocating fatigue testing mechanism according to claim 1, characterized in that: The rim surface of the second cam is provided with an arc-shaped contact piece, and the contact surface of the contact piece is provided with a grid-like anti-slip texture. The opposing inner surfaces of the clamping plates are covered with an elastic rubber layer, and the surface of the elastic rubber layer is pressed with transverse anti-slip ribs.

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