Tensile resistance detection equipment for belt
By designing a tensile force detection device for belts, using the gas expansion body to apply expansion pressure to the belt ring, simulating the actual use scenario, efficient and accurate belt tensile force detection is achieved, and the detection efficiency in the existing technology is solved Problems of low and inaccurate results.
Patent Information
- Application Number
- CN202420657856.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The existing belt tensile force detection method is inefficient and cannot simulate the stress of the belt in actual use scenarios, resulting in inaccurate detection results and the service life of the belt cannot be accurately judged.
A tensile force detection device was designed. By buckle the belt around and buckle it into a circle, the expansion principle of gas expansion body is used to apply expansion pressure to the inner peripheral wall of the belt ring, simulate the use scenarios when squatting and bending, and realize the one-time detection of the belt buckle. Combination force with belt body, breaking force of belt body, buckle and toothed joint force.
It improves detection efficiency, obtains more accurate tensile resistance data, can more accurately judge the actual service life of the belt, and the equipment structure is simple, adapts to a variety of usage scenarios, reducing the idleness of the equipment.
Smart Images
Figure CN222212446U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of clothing production, in particular to a tensile force detection device for a belt. Background Art
[0002] Existing belts generally need to be subjected to tensile tests during the sample development stage or before they are shipped after production, that is, the bonding strength between the buckle and the belt body, the breaking strength of the belt body, and the bite force between the buckle and the belt teeth are tested, so as to ensure the service life of the belt; but the existing testing methods all test independently, for example, the buckle and the belt body are clamped separately, and then the belt is pulled linearly to both sides for testing, and the belt body breaking force and the buckle and belt teeth bite force tests are all the same, and thus at least three tests are required, which means three clampings. This method has extremely low detection efficiency, and the linear testing method cannot be close to the actual situation. The belt is used in a circular ring shape around the waist, and the belt is used in a curved surface or curve, which cannot simulate the force applied to the belt when squatting or bending. The results of individual tests cannot be used to analyze the actual conditions of each part of the belt, and thus the actual service life cannot be more accurately determined. Utility Model Content
[0003] The utility model provides a tensile force testing device for belts, which has a simple overall structure and can simulate the actual use scenario of belt force when squatting or bending, and can perform a one-time test on the binding force between the belt buckle and the belt body, the breaking force of the belt body, and the bite force between the belt buckle and the belt teeth. The utility model mainly adopts the following technical solutions:
[0004] A device for testing the bursting strength of a belt, comprising a workbench with a control box provided thereon; a fixing assembly, comprising a bearing tray provided on the workbench, and a pressing mechanism provided on the control box and corresponding to the bearing tray; the bearing tray is used to place belt loops arranged in a ring shape, the pressing mechanism can move toward the bearing tray, and is used to constrain the belt loops to move axially; the bearing tray, the belt loops and the pressing mechanism cooperate to enclose a clearance space; an expansion and pressure assembly, comprising a pneumatic source component, and an inflatable body whose expansion volume is controlled by the pneumatic source component; the inflatable body is located below the bearing tray, and is inflated to penetrate through a through hole provided on the bearing tray into the clearance space, and is axially limited by the fixing assembly to expand circumferentially to apply an expansion pressure to the inner circumferential wall of the belt loop.
[0005] Preferably, the pneumatic source is an air compressor, and the exhaust outlet of the air compressor is connected to the air inlet of the inflatable body so as to expand the volume of the inflatable body by delivering gas.
[0006] Preferably, a start switch is provided on the control box to control the operation of the pressing mechanism through the start switch.
[0007] Preferably, the pressing mechanism includes a pressure rod and a pressure plate, one end of the pressure rod is arranged on the control box, and the pressure rod is controlled by a start switch on the control box to move up and down toward the supporting tray; the other end of the pressure rod is connected to the pressure plate, and when the pressure rod moves, it drives the pressure plate to move toward the supporting tray, so as to constrain the axial displacement of the belt loop.
[0008] Preferably, the pressure rod and the pressure plate are connected by a ball head; when the pressure rod moves, it drives the pressure plate to move toward the support plate, and links the pressure plate to rotate on the pressure rod, driving the belt ring and the support plate to flip.
[0009] Preferably, a gap space is formed between the outer peripheral side of the support tray and the workbench, and the belt loop and the support tray flip and move in the gap space.
[0010] Preferably, the control box is also provided with a display screen.
[0011] Preferably, the support plate and the pressure plate both have a central axis, and the central axes of the two coincide with each other.
[0012] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:
[0013] (1) The technical solution of the utility model provides a tensile force testing device for belts, which abandons the traditional linear testing method of pulling the belt to both sides, and locks the belt into a belt loop with a buckle. The expansion principle of the airbag (i.e., the inflatable body) is adopted. The airbag is pressurized to expand and enlarge, and an expansion pressure is applied to the inner wall of the belt loop, so that the belt loop gradually expands toward the outer ring. Whether the belt loop has cracking and deformation is tested to detect whether its tensile strength is sufficient. Such a structural method is used to simulate the actual use scenario of the belt being subjected to force during squatting and bending. The bonding force between the belt buckle and the belt body, the breaking force of the belt body, and the bite force between the belt buckle and the belt teeth can all be tested at one time, which is more efficient, the tensile test data is more accurate, and the actual service life of the belt can be better judged and analyzed.
[0014] (2) In this technical solution, the belt loop is constrained and limited by limiting the upper and lower positions of the bearing tray and the pressure plate, so that the bearing tray, the belt loop and the pressure plate can cooperate to form a clearance space. When the inflatable body expands, it can enter the clearance space, and in the clearance space, the bearing tray and the pressure plate are axially limited and can only expand along the circumferential direction toward the inner wall of the belt loop, exerting an expansion pressure on the inner wall of the belt loop. This structural method can simulate the human waist and the scene where the flesh accumulates on the waist when squatting, that is, the flesh pushes the inner wall of the belt loop in a circular shape due to the squeezing of squatting, causing the belt loop to deform toward the periphery. The structure is simple and effective, and can fit the actual use scenario.
[0015] (3) In the technical solution, the pressure plate structure is adopted to effectively form a clearance space, and after being pressed on the belt loop, the displacement of the belt loop in the axial direction can be effectively limited. The structure is simple and the processing and installation are also convenient.
[0016] (4) In the present technical solution, when there is no need to conduct a tension test on the belt, the pressure plate can be disassembled and replaced by the existing fixed cover to conduct a bursting pressure test on the fabric. This has a certain degree of interchangeability, allowing the equipment to adapt to more usage scenarios and reduce the number of equipment idle situations. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;
[0019] Figure 2 This is a schematic structural diagram of the belt loop of the first embodiment of the utility model before being axially constrained;
[0020] Figure 3 This is a schematic diagram of the structure of the belt loop after being axially constrained in the first embodiment of the utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the belt loop after being axially constrained in the second embodiment of the utility model;
[0022] Figure 5 This is a schematic structural diagram of the belt loop of the second embodiment of the utility model when it is turned over in the gap space.
[0023] The description of the accompanying reference numerals is as follows: 1. workbench; 21. supporting tray; 211. through hole; 22. pressing mechanism; 221. pressing rod; 222. pressing plate; 31. inflatable body; 4. belt loop; 5. control box; 6. cylinder; A. make way space; B. clearance space. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0025] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.
[0026] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the specific protection scope of the utility model.
[0027] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.
[0028] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".
[0029] First embodiment
[0030] See also Figures 1 to 3 .
[0031] This embodiment provides a tensile force detection device for a belt, which can simulate the actual use scenario of the belt being subjected to force when a person squats or bends, and perform a one-time detection of the binding force between the belt buckle and the belt body, the breaking force of the belt body, and the bite force between the belt buckle and the belt teeth. The main structure is as follows:
[0032] A belt loop 4, which is fastened and locked into a ring shape by a belt;
[0033] A workbench 1 is provided with a control box 5, on which a circuit control structure, a display screen (not shown) electrically connected to the circuit control structure, a start switch (not shown) and a cylinder 6 are provided, so that the circuit control structure can be controlled by the start switch to start the cylinder 6 to start moving.
[0034] The fixing assembly includes a tray 21 and a pressing mechanism 22; the tray 21 is in a "disc-shaped" shape and is arranged in the middle of the workbench 1 for placing the belt loop 4 arranged in a ring shape. A through hole 211 runs through the middle of the tray 21, and the through hole 211 is just located in the middle of the belt loop 4; the pressing mechanism 22 is arranged on the control box 5 and corresponds to the tray 21. Under the control of the cylinder 6 on the control box 5, the pressure rod 221 can move toward the tray 21 until it is located above the belt loop 4, restricting the belt loop 4 to move in the axial direction toward the tray 21 or the pressing mechanism 22, so that the belt loop 4 will not move in the axial direction even under force; and after the pressing mechanism 22 is located above the belt loop 4, the tray 21, the belt loop 4 and the pressure plate 222 can cooperate to enclose a clearance space A;
[0035] The expansion and pressure component includes a pneumatic source component and an inflatable body 31 whose expansion volume is controlled by the pneumatic source component; the inflatable body 31 is located below the through hole 211 of the support tray 21. As the pneumatic source component continues to deliver inflation, the inflatable body 31 will expand and penetrate the through hole 211 opened on the support tray 21 to enter the clearance space A. As the volume of the inflatable body 31 expands, the inflatable body 31 will be axially limited by the fixed component and only expand along the circumferential direction to apply inflation pressure to the inner circumferential wall of the belt loop 4.
[0036] In this embodiment, the above expansion pressure is equivalent to thrust, that is, the inflatable body 31 expands to generate thrust to push the belt loop 4 toward the outer circumference, so that the inflatable body 31 begins to deform. At the same time, since the inflatable body 31 gradually expands in volume in the inner ring of the belt loop 4, the inflatable body 31 is also restricted by the axial direction of the pressing mechanism 22 and the support tray 21, and can only expand in the circumferential direction within the clearance space A.
[0037] In the present embodiment, the downward displacement of the pressure plate 222 is only located on the upper side of the belt loop 4 to constrain the axial displacement of the belt loop 4, and no pressure is applied to the belt loop 4. If pressure is applied, the belt loop 4 will encounter resistance when expanding outward, affecting the deformation effect of the belt loop 4, which is not conducive to detection.
[0038] In this embodiment, the pneumatic source is an air compressor, and the exhaust outlet of the air compressor is connected to the air inlet of the inflatable body 31, so that the volume of the inflatable body 31 can be expanded by delivering gas; the inflatable body 31 is an air bag or other mechanical structure that can generate thrust by inflation, and the use of the air bag in this embodiment is more cost-effective. In other embodiments, a push structure can be set in the inner ring of the belt loop 4, and the air compressor delivers gas as a power source (for example, a cylinder can also be used as a power source), so that the push structure applies a push force to the inside of the belt loop 4, which can also cause the belt loop 4 to deform.
[0039] In this embodiment, the pressing mechanism 22 includes a pressing rod 221 and a pressing plate 222. One end of the pressing rod 221 is arranged on the control box 5 and connected to the cylinder 6 in the control box 5. The cylinder 6 is controlled to operate by the starting switch on the control box 5, driving the pressing rod 221 to move up and down toward the supporting tray 21. The other end of the pressing rod 221 is detachably connected or directly welded to the pressing plate 222. When the pressing rod 221 moves, the pressing rod 221 drives the pressing plate 222 to move toward the supporting tray 21 until the pressing plate 222 is located above the belt loop 4, so as to just constrain the axial displacement of the belt loop 4.
[0040] In this embodiment, after the pressure plate 222 is installed on the control box 5, the central axes of the supporting tray 21 and the pressure plate 222 coincide with each other.
[0041] The working principle and use process of this utility model:
[0042] Before starting the belt test, preset the required test value to determine the amount of gas that the air compressor needs to deliver. For example, when testing the belt's tensile strength when it bears 100 kg, the delivery amount needs to be adjusted.
[0043] When the belt begins to be tested for 100 kg tensile strength, see Figure 1 and Figure 2 First, lock the belt into an endless belt loop 4 and place it on the tray 21 for positioning; then, refer to Figure 3 , control the start switch to operate, so that the pressure rod 221 moves downward, drives the pressure plate 222 to move to the upper side of the belt loop 4, axially limits the belt loop 4, and cooperates to set a clearance space A between the bearing tray 21, the pressure plate 222 and the inner ring of the belt loop 4; then, see Figure 3 , control the air compressor to start running, as the pneumatic source continues to deliver air, the inflatable body 31 will expand and penetrate the through hole 211 opened on the support tray 21 to enter the clearance space A, as the volume of the inflatable body 31 expands, the inflatable body 31 will be limited by the axial direction of the support tray 21 and the pressure plate 222 and only expand in the circumferential direction, so as to apply an expansion pressure to the inner peripheral wall of the belt loop 4, so that the belt loop 4 begins to deform and expand toward the outer periphery; finally, the belt tensile strength can be judged by observing the deformation amount of the belt loop 4;
[0044] When it is necessary to test the force under which the belt will directly break, the above steps are performed and gas is continuously supplied until the belt loop 4 is deformed and broken, and finally the gas supply volume is observed to determine the maximum force that the belt can withstand, and the experimental test is completed. It is worth noting that during the process of expansion and deformation, the belt loop 4 is always axially constrained and limited between the pressure plate 222 and the bearing plate 21. Even if the belt loop 4 breaks, it is still between the pressure plate 222 and the bearing plate 21.
[0045] When the tension test of the belt is not needed, the pressure plate 222 can be disassembled and replaced by the existing fixed cover to detect the bursting pressure of the fabric. It has a certain interchangeability, allowing the equipment to adapt to more usage scenarios and reduce the idleness of the equipment. Therefore, the utility model abandons the traditional linear test method of pulling the belt to both sides, and locks the belt into a belt loop 4 around the buckle. The expansion principle of the airbag (i.e., the inflatable body 31) is adopted. The airbag is pressurized to expand and enlarge it to apply expansion pressure to the inner wall of the belt loop 4, so that the belt loop 4 gradually expands toward the outer ring, and the belt loop 4 is tested for cracking and deformation to detect whether its tensile strength is sufficient. Through such a structural method, the actual use scenario of the belt being subjected to force during squatting and bending is simulated, and the combination force between the belt buckle and the belt body, the breaking force of the belt body, and the bite force between the belt buckle and the belt teeth can be tested at one time, which is more efficient, the tensile test data is more accurate, and the actual service life of the belt can be better judged and analyzed.
[0046] Second embodiment
[0047] See also Figure 4 and Figure 5
[0048] The main difference between the second embodiment and the first embodiment is that the pressure rod 221 and the pressure plate 222 of the first embodiment are welded or detachably connected, while the pressure rod 221 and the pressure plate 222 of the second embodiment are directly connected by a ball head, that is, the pressure plate 222 can perform universal rotation relative to the pressure rod 221.
[0049] In this embodiment, the purpose of using a ball head to connect the pressure rod 221 and the pressure plate 222 is to better and more accurately simulate the force scenario of the belt, that is, the belt is locked in a ring shape around the human waist and the human body is moving (such as leaning forward or backward).
[0050] In this embodiment, the pressure rod 221 and the pressure plate 222 are connected by a ball head; when the pressure rod 221 moves, the pressure rod 221 extends and retracts downward, driving the pressure plate 222 to move downward toward the support tray 21, and can also link the pressure plate 222 to rotate on the pressure rod 221, driving the belt ring 4 and the support tray 21 to flip over, so as to simulate the forward or backward leaning movement of the human body through the forward and backward flipping movement.
[0051] In this embodiment, the displacement of the pressure rod 221 and the rotation of the pressure plate 222 relative to the pressure rod 221 are all controlled by the control box 5 .
[0052] In this embodiment, a gap space B is formed between the outer peripheral edge of the tray 21 and the workbench 1 , and the gap space B allows the belt loop 4 and the tray 21 to perform back and forth flipping motion.
[0053] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.
Claims
1. A belt tensile force testing device, characterized in that: include a workbench on which a control box is provided; The fixing assembly comprises a tray disposed on the workbench, and a pressing mechanism disposed on the control box and corresponding to the tray; the tray is used to place a belt loop disposed in a ring shape, and the pressing mechanism can move toward the tray and is used to restrict the belt loop from moving in the axial direction; the tray, the belt loop and the pressing mechanism cooperate to enclose a clearance space; An expansion and pressure assembly includes a pneumatic source and an inflatable body whose expansion volume is controlled by the pneumatic source; the inflatable body is located below the support tray, and is inflated to penetrate through the through hole opened on the support tray into the clearance space, and is axially limited by the fixed assembly to expand circumferentially to apply expansion pressure to the inner circumferential wall of the belt loop.
2. A belt tensile force detection device as claimed in claim 1, characterized in that: The pneumatic source is an air compressor, and the exhaust outlet of the air compressor is connected to the air inlet of the inflatable body so as to expand the volume of the inflatable body by delivering gas.
3. A belt tensile force detection device as claimed in claim 1, characterized in that: The control box is provided with a start switch to control the operation of the pressing mechanism through the start switch.
4. A belt tensile force detection device as claimed in claim 3, characterized in that: The pressing mechanism includes a pressure rod and a pressure plate. One end of the pressure rod is arranged on the control box, and the pressure rod is controlled by a start switch on the control box to move up and down toward the supporting tray; the other end of the pressure rod is connected to the pressure plate. When the pressure rod moves, it drives the pressure plate to move toward the supporting tray to constrain the belt loop from moving axially.
5. A belt tensile force detection device as claimed in claim 4, characterized in that: The pressure rod and the pressure plate are connected by a ball head; when the pressure rod moves, it drives the pressure plate to move toward the bearing tray, and links the pressure plate to rotate on the pressure rod, driving the belt ring and the bearing tray to flip.
6. A belt tensile force detection device as claimed in claim 5, characterized in that: A gap space is formed between the outer peripheral side of the supporting tray and the workbench, and the belt loop and the supporting tray are turned over and moved in the gap space.
7. A belt tensile force testing device as claimed in claim 4, characterized in that: The control box is also provided with a display screen.
8. A belt tensile force testing device according to any one of claims 1 to 7, characterized in that: The supporting tray and the pressure plate both have central axes, and the central axes of the two coincide with each other.