A device for testing the stretch fatigue of a waistband of a pull-up diaper

Abstract

The utility model discloses a kind of pantywaist stretch fatigue testing devices, specifically related to panty test technical field, including shell, the middle part of the bottom of shell inner wall is fixed with first servo motor, the power output end of first servo motor is fixed with rotating shaft, the rotating shaft top is fixed with guide rail, the both ends of guide rail top are movably connected with extrusion block.This device controls the positive and negative rotation of second servo motor by pressing change-over switch, to control the spacing between two extrusion blocks, rotating shaft is driven by first servo motor to rotate, and then drive guide rail and extrusion block on top to rotate, pantywaist is stretched correspondingly, when first servo motor rotates, still can control second servo motor rotation to control the maximum length of panty stretching, so as to reach the size when quickly adjusting detection, simultaneously, direct adjustment effect can also be achieved during testing.

Description

Technical Field

[0001] This utility model relates to the field of pull-up pants testing technology, specifically to a pull-up pants waist circumference tensile fatigue testing device. Background Technology

[0002] Pull-up diapers, also known as training pants, are a type of diaper designed specifically for active babies. They resemble underwear in appearance and feature a 360-degree elastic waistband, combining the waterproof function with the ease of wearing regular shorts. They are easy to put on and take off: simply pull them on, and tear them open on both sides to remove them. They can be changed while the baby is standing, crawling, or in other positions, greatly reducing the difficulty of changing them. They are comfortable and fit snugly: the elastic waistband automatically adjusts to the baby's movements, preventing friction between the waist and legs, reducing the risk of marks, and increasing freedom of movement.

[0003] The pull-up trousers waistband tensile fatigue testing device is a specialized device used to evaluate the durability and fatigue life of pull-up trousers waistband materials under repeated tensile conditions. Its design needs to combine material properties with dynamic mechanical testing principles. Tensile fatigue testing equipment is mainly divided into high frequency, low frequency and motor driven types. Its core function is to simulate the fatigue process of materials in actual use by applying periodic tensile loads.

[0004] The existing testing equipment is inconvenient to adjust because different materials and sizes of pull-up diapers require different sizes for testing. The equipment needs to be stopped, disassembled and readjusted with a screwdriver, and then tightened again. In addition, the existing pull-up diapers need to record the number of stretches during testing to determine whether the pull-up diapers are qualified. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a pull-up pants waist circumference tensile fatigue testing device, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a tensile fatigue testing device for the waist circumference of pull-up pants, including an outer shell. A first servo motor is fixed in the middle of the bottom of the inner wall of the outer shell. A rotating shaft is fixed to the power output end of the first servo motor. A guide rail is fixed to the top of the rotating shaft. Compression blocks are movably connected to both ends of the top of the guide rail. Sleeve rods are fixed to both sides of the inner wall of the outer shell. Telescopic rods are movably sleeved inside the two sleeve rods. Compression blocks are fixed to opposite ends of the two telescopic rods. Springs are provided on the outer walls of the two sleeve rods.

[0007] Furthermore, a second servo motor is fixed at the center of the top of the guide rail. Both power output ends of the second servo motor are fixed with threaded rods, and the threads of the two threaded rods are opposite in direction. Both ends of the inner wall of the guide rail are slidably connected with sliders. The two sliders are respectively threadedly connected to the two threaded rods, and the two sliders are respectively fixed to the bottom of the two extrusion blocks.

[0008] Furthermore, both extrusion blocks are arranged in a semi-elliptical shape, and the outer walls of the two extrusion blocks are arc-shaped. The two extrusion blocks and the two extrusion sleeves are used together, and the inner walls of the two extrusion sleeves are arc-shaped.

[0009] Furthermore, one end of the spring is fixed to the outer wall of the sleeve rod, and the other end of the spring is fixed to the middle of one side of the extrusion sleeve block. The length of the spring is adapted to the difference between the semi-major axis and the semi-minor axis of the extrusion block.

[0010] Furthermore, a control panel is fixed to the top of one side of the outer wall of the outer casing, and a timer switch and a selector switch are provided on one side of the control panel. The timer switch is electrically connected to the first servo motor, and the selector switch is electrically connected to the second servo motor.

[0011] Furthermore, support rods are fixed at both ends of the top of the two extrusion sleeves, and limit rods are fixed at the top of the two sets of support rods. The distance between the middle of the limit rod and the telescopic rod is less than the distance between the support rod and the telescopic rod.

[0012] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. This application controls the forward and reverse rotation of the second servo motor by pressing a changeover switch, causing the two sliders to simultaneously separate at both ends or move closer to the center, thereby controlling the distance between the two extrusion blocks. The first servo motor drives the rotating shaft to rotate, which in turn drives the guide rail and the top extrusion block to rotate, stretching the waistband of the pull-up pants accordingly. While the first servo motor is rotating, the rotation of the second servo motor can still be controlled to control the maximum length of the pull-up pants' stretch, thereby achieving the effect of quickly adjusting the size during testing, and also allowing for direct adjustment during the testing process.

[0013] 2. This application allows for the adjustment of the timer switch. After the timer switch is turned on, the first servo motor rotates. While the first servo motor is still rotating, the pull-up pants fall off the support rod, indicating that the pull-up pants have become fatigued during stretching. This allows for the pre-setting of the test time to determine the number of stretches during the test, making it more convenient to use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged schematic diagram of part A; Figure 3 This is a schematic diagram of the extrusion sleeve structure of this utility model; Figure 4 This is a schematic diagram of the extrusion block structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the guide rail of this utility model.

[0016] The labels in the diagram represent: 1. Outer shell; 2. First servo motor; 3. Rotating shaft; 4. Guide rail; 5. Second servo motor; 6. Threaded rod; 7. Slider; 8. Extrusion block; 9. Sleeve rod; 10. Telescopic rod; 11. Spring; 12. Extrusion sleeve block; 13. Support rod; 14. Limiting rod; 15. Control panel; 16. Timer switch; 17. Changeover switch. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0019] This application discloses a tensile fatigue testing device for the waistband of pull-up pants, including an outer shell 1. A first servo motor 2 is fixed in the middle of the bottom of the inner wall of the outer shell 1. A rotating shaft 3 is fixed to the power output end of the first servo motor 2. A guide rail 4 is fixed to the top of the rotating shaft 3. Compression blocks 8 are movably connected to both ends of the top of the guide rail 4. Sleeve rods 9 are fixed to both sides of the inner wall of the outer shell 1. Telescopic rods 10 are movably sleeved inside the two sleeve rods 9. Compression blocks 12 are fixed to opposite ends of the two telescopic rods 10. Springs 11 are provided on the outer walls of the two sleeve rods 9.

[0020] Reference Appendix Figure 5 The guide rail 4 has a second servo motor 5 fixed at the top center. The two power output ends of the second servo motor 5 are fixed with threaded rods 6. The threads of the two threaded rods 6 are opposite. The guide rail 4 has sliders 7 slidably connected to both ends of the inner wall. The two sliders 7 are respectively threaded to the two threaded rods 6. The two sliders 7 are respectively fixed to the bottom of the two extrusion blocks 8. The second servo motor 5 drives the two threaded rods 6 to rotate, which in turn drives the two sliders 7 to slide inside the guide rail 4, causing the two sliders 7 to separate at both ends or move closer to the center at the same time.

[0021] Reference Appendix Figure 3 and 4 The two extrusion blocks 8 are both semi-elliptical in shape, and the outer walls of the two extrusion blocks 8 are arc-shaped. The two extrusion blocks 8 and the two extrusion sleeve blocks 12 are used together. The inner walls of the two extrusion sleeve blocks 12 are arc-shaped. The first servo motor 2 drives the rotating shaft 3 to rotate, which in turn drives the guide rail 4 and the top extrusion block 8 to rotate.

[0022] Reference Appendix Figure 3 One end of spring 11 is fixed to the outer wall of sleeve rod 9, and the other end of spring 11 is fixed to the middle of one side of compression sleeve block 12. The length of spring 11 is adapted to the difference between the semi-major axis and the semi-minor axis of compression block 8. By putting the waistband of the pull-up pants to be tested on the top of compression sleeve block 12, when compression block 8 rotates, when the long side of compression block 8 touches and squeezes the inside of compression sleeve block 12, spring 11 is compressed accordingly, and telescopic rod 10 enters the inside of sleeve rod 9. At this time, the waistband of the pull-up pants is stretched accordingly. When the short side of compression block 8 touches the inside of compression sleeve block 12, spring 11 returns to its original position, both compression sleeve blocks 12 return to their original position, and the waistband of the pull-up pants also shrinks accordingly.

[0023] Reference Appendix Figure 1 and 2The outer casing 1 has a control panel 15 fixed to the top of one side of its outer wall. A timer switch 16 and a selector switch 17 are provided on one side of the control panel 15. The timer switch 16 is electrically connected to the first servo motor 2, and the selector switch 17 is electrically connected to the second servo motor 5. By adjusting the timer switch 16, the first servo motor 2 drives the extrusion block 8 to rotate after the timer switch 16 is turned on. The number of times the pull-up pants are stretched is determined based on the timer switch 16 and the rotation speed of the first servo motor 2. The forward and reverse rotation of the second servo motor 5 is controlled by pressing the selector switch 17, thereby controlling the distance between the two extrusion blocks 8 and controlling the maximum length of the pull-up pants stretch.

[0024] Reference Appendix Figure 3 The top ends of the two compression sleeves 12 are fixed with support rods 13, and the top of the two sets of support rods 13 are fixed with limit rods 14. The distance between the middle of the limit rod 14 and the telescopic rod 10 is less than the distance between the support rod 13 and the telescopic rod 10. When the pull-up pants are connected to the limit rods 14, the waist of the pull-up pants is put on the support rods 13, and the top of the pull-up pants is above the limit rods 14. When the pull-up pants fall off the support rods 13, it means that the pull-up pants have become fatigued from stretching.

[0025] The workflow of this utility model is as follows: First, connect the pull-up trousers to the limiting rod 14. Place the waistband of the pull-up trousers onto the support rod 13, with the top of the trousers above the limiting rod 14. Press the selector switch 17 to control the forward and reverse rotation of the second servo motor 5, causing the two threaded rods 6 to rotate. This, in turn, causes the two sliders 7 to slide inside the guide rail 4, simultaneously causing the two sliders 7 to separate at both ends or move closer together, thus controlling the distance between the two extrusion blocks 8. Then, by adjusting the timer switch 16, the first servo motor 2 rotates after the timer switch 16 is turned on. The first servo motor 2 drives the rotating shaft 3 to rotate, thereby... When the moving guide rail 4 and the top extrusion block 8 rotate, and the long side of the extrusion block 8 touches and squeezes the inside of the extrusion sleeve 12, the spring 11 is compressed accordingly, and the telescopic rod 10 enters the sleeve 9. At this time, the waist of the pull-up pants is stretched accordingly. When the short side of the extrusion block 8 touches the inside of the extrusion sleeve 12, the spring 11 returns to its original position, the two extrusion sleeves 12 return to their original position, and the waist of the pull-up pants also shrinks accordingly. When the first servo motor 2 rotates, the second servo motor 5 can still be controlled to rotate to control the maximum length of the pull-up pants stretch. When the pull-up pants fall off the support rod 13, it means that the pull-up pants have become fatigued.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the tensile fatigue of waistbands in pull-up trousers, characterized in that: The device includes an outer shell (1), a first servo motor (2) is fixed at the middle of the bottom of the inner wall of the outer shell (1), a rotating shaft (3) is fixed at the power output end of the first servo motor (2), a guide rail (4) is fixed at the top of the rotating shaft (3), and a pressing block (8) is movably connected to both ends of the top of the guide rail (4). Sleeve rods (9) are fixed on both sides of the inner wall of the outer shell (1), and telescopic rods (10) are movably sleeved inside the two sleeve rods (9). A pressing sleeve block (12) is fixed at one end of the two telescopic rods (10), and a spring (11) is provided on the outer wall of the two sleeve rods (9).

2. The pull-up pants waistband tensile fatigue testing device according to claim 1, characterized in that: A second servo motor (5) is fixed at the middle of the top of the guide rail (4). Both power output ends of the second servo motor (5) are fixed with threaded rods (6). The thread directions of the two threaded rods (6) are opposite. Both ends of the inner wall of the guide rail (4) are slidably connected with sliders (7). The two sliders (7) are respectively threadedly connected to the two threaded rods (6). The two sliders (7) are respectively fixed to the bottom of the two extrusion blocks (8).

3. The pull-up pants waistband tensile fatigue testing device according to claim 1, characterized in that: Both extrusion blocks (8) are semi-elliptical blocks, and the outer walls of the two extrusion blocks (8) are arc-shaped. The two extrusion blocks (8) and the two extrusion sleeves (12) are used together, and the inner walls of the two extrusion sleeves (12) are arc-shaped.

4. The pull-up pants waistband tensile fatigue testing device according to claim 1, characterized in that: One end of the spring (11) is fixed to the outer wall of the sleeve (9), and the other end of the spring (11) is fixed to the middle of one side of the extrusion sleeve (12). The length of the spring (11) is matched with the difference between the semi-major axis and the semi-minor axis of the extrusion block (8).

5. The pull-up pants waistband tensile fatigue testing device according to claim 1, characterized in that: A control panel (15) is fixed to the top of one side of the outer wall of the outer shell (1). A timer switch (16) and a changeover switch (17) are provided on one side of the control panel (15). The timer switch (16) is electrically connected to the first servo motor (2), and the changeover switch (17) is electrically connected to the second servo motor (5).

6. The pull-up pants waistband tensile fatigue testing device according to claim 1, characterized in that: Both ends of the top of the two compression sleeves (12) are fixed with support rods (13), and the top of the two sets of support rods (13) are fixed with limit rods (14). The distance between the middle of the limit rod (14) and the telescopic rod (10) is less than the distance between the support rod (13) and the telescopic rod (10).

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