High-precision fabric elastic recovery testing device

Abstract

The invention discloses a high-precision fabric elastic force recovery testing device which comprises a strength tester which comprises a support, a first chuck and a second chuck, the first chuck and the second chuck slide along the support, fabric is arranged between the first chuck and the second chuck, the high-precision fabric elastic force recovery testing device further comprises an overturning detection mechanism which comprises an overturning frame rotationally connected to the support, a pushing and abutting head is arranged on the overturning frame, and the overturning frame is overturned to a horizontal state and slides, so that the fabric is pushed and abutted through the pushing and abutting head. In particular to the technical field of fabric elasticity testing equipment, a turnover detection device is additionally arranged on a strength tester, when fabric resilience force testing needs to be carried out, fabric is firstly fixed on a first chuck and a second chuck to be pulled, the fabric is pulled to a critical deformation state, and then a turnover frame is turned over to a horizontal state and slides; the fabric is subjected to pushing deformation through the pushing head, so that the traction force of the fabric is detected through the first chuck and the second chuck during deformation so as to reflect the traction force of elastic recovery.

Description

Technical Field

[0001] The invention relates to the technical field of fabric elastic force testing equipment, in particular to a high-precision fabric elastic force recovery testing device. Background Art

[0002] Fabric testing is the process of testing the chemical and physical properties of fabrics. In enterprises, different batches of fabric products will be randomly tested to ensure quality.

[0003] According to patent number CN206740502U, published (announced) date: 2017-12-12, a fabric strength machine is disclosed, including a base, a power supply arranged in the base, a frame fixedly connected to the base, a crossbeam slidably connected to the frame, a sensor fixed to the crossbeam, an upper clamp connected to the lower end of the sensor, and a lower clamp fixed to the base corresponding to the lower end of the upper clamp, characterized in that: the upper clamp and the lower clamp both include a fixed shaft for fixing the clamp, a fixed clip integrally arranged on the fixed shaft, and a rotating clip rotatably connected to the fixed shaft, and the inner surface of the rotating clip adopts an electromagnet and is connected to the power supply. The utility model realizes the clamping operation of the test sample by adopting an electromagnet with adjustable current, eliminates the concave and convex grooves of the traditional clamp, avoids damage to the fabric, realizes automatic operation, and is simple and convenient.

[0004] In the prior art including the above-mentioned patents, fabric elastic recovery is one of the physical properties of fabric, and is usually evaluated through tensile testing in a strength machine and auxiliary numerical values ​​in a fabric tearing tester. However, the numerical accuracy of the fabric elastic recovery reflected by the numerical value is low. When there is a special fabric that needs to accurately measure the elastic recovery, it is difficult to measure it accurately in the factory. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision fabric elastic recovery testing device, aiming to solve the problem that it is difficult to accurately detect the elasticity of fabrics in factories.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision fabric elastic recovery testing device, comprising a strength machine, which includes a bracket and a first chuck and a second chuck sliding along the bracket, a fabric is arranged between the first chuck and the second chuck, and also includes a flip detection mechanism, which includes a flip frame rotatably connected to the bracket, a pushing head is arranged on the flip frame, the flip frame flips to a horizontal state and slides to push the fabric to deform along the first chuck and the second chuck through the pushing head.

[0007] Preferably, a one-way sliding mechanism is symmetrically arranged on the bracket, and the one-way sliding mechanism includes a movable cover rotating with the flip frame, and mold blocks are arranged on both sides of the flip frame, and the mold blocks move unidirectionally along the movable cover.

[0008] Preferably, two limiting blocks are arranged on the movable cover, and one-way teeth are arranged in a linear array on the mold block, wherein one of the limiting blocks pushes against the one-way teeth to drive the other limiting block to move in the opposite direction to the one-way teeth.

[0009] Preferably, the limiting block and the one-way tooth are both provided with an inclined surface and a vertical surface, wherein:

[0010] The one-way tooth moves to push against one of the limiting blocks along the inclined surface;

[0011] The movement of one of the limiting blocks drives the other limiting block to move to fit the vertical surface of the one-way tooth.

[0012] Preferably, a sliding gear plate is provided in the movable cover, the sliding gear plate is coupled to one of the limiting blocks via a reversing gear, and the other limiting block is elastically connected to the sliding gear plate.

[0013] Preferably, a rotating ring is rotatably connected to the bracket, the flip frame is slidably connected to the rotating ring, and the movable cover is driven to move along the rotating ring so that the limiting block couples or decouples the one-way tooth.

[0014] Preferably, a fitting component is arranged at the central axis of the flip frame, and the fitting component comprises an elastic cover, and the elastic cover is driven to bend to change the area of ​​the fabric being fitted.

[0015] Preferably, an extension rod is provided on the flip frame, a sliding cover is sleeved on the extension rod, and connecting rods connecting the two ends of the elastic cover are provided at both ends of the sliding cover.

[0016] Preferably, a limit assembly is provided on the flip frame, and the limit assembly includes a slide frame, and the slide frame is driven and coupled to the one-way teeth to move along the mold block.

[0017] Preferably, a locking screw is threadedly connected to the sliding frame, and the locking screw is locked by fitting against the mold block.

[0018] In the above technical scheme, the present invention provides a high-precision fabric elastic recovery testing device, which has the following beneficial effects: a flip detection device is added to the strength machine, and when the fabric resilience test is required, the fabric is first fixed on the first chuck and the second chuck for pulling, and the fabric is pulled to a critical deformation state, and then the flip frame is flipped to a horizontal state and slid, and the fabric is pushed and deformed by the pushing head, so that the pulling force of the fabric is detected by the first chuck and the second chuck during deformation to reflect the pulling force of elastic recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0021] Figure 2 An exploded schematic diagram of a rollover detection mechanism provided by an embodiment of the present invention;

[0022] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0024] Figure 5 An exploded schematic diagram of a one-way sliding mechanism and a limit assembly provided in an embodiment of the present invention;

[0025] Figure 6 for Figure 5 The enlarged schematic diagram at C in the middle;

[0026] Figure 7 for Figure 5 The enlarged schematic diagram at D in the middle;

[0027] Figure 8 An overall cross-sectional schematic diagram provided for an embodiment of the present invention;

[0028] Fig. 9 An exploded cross-sectional schematic diagram of a one-way sliding mechanism and a limiting assembly provided in an embodiment of the present invention;

[0029] Fig.10 for Fig. 9 The enlarged schematic diagram at E in the middle;

[0030] Fig.11 for Fig. 9 The enlarged schematic diagram at F in the middle;

[0031] Fig.12 The present invention is provided as an overall front view of an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Strength machine; 11. Bracket; 111. Rotating groove; 12. First chuck; 13. Second chuck; 14. Fabric; 2. Turning detection mechanism; 21. Turning frame; 211. One-way teeth; 3. One-way sliding mechanism; 31. Moving cover; 311. First movable groove; 312. Second movable groove; 313. Sliding rod; 314. Locking protrusion; 32. Rotating ring; 321. Sliding hole; 33. Limiting block; 331. First elastic member; 34. Reversing gear; 35. Sliding tooth plate; 351. Third elastic member; 4. Limiting assembly; 41. One-way coupling wheel; 42. Turntable; 421. Elastic teeth; 422. Rotating head; 43. Sliding frame; 431. Locking screw; 5. Fitting assembly; 51. Elastic cover; 52. Extension rod; 53. Sliding cover; 531. Connecting rod; 54. Threaded sleeve. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0035] like Figure 1-12 As shown, a high-precision fabric elastic recovery testing device includes a strength machine 1, which includes a bracket 11 and a first chuck 12 and a second chuck 13 sliding along the bracket 11, a fabric 14 is arranged between the first chuck 12 and the second chuck 13, and also includes a flip detection mechanism 2, which includes a flip frame 21 rotatably connected to the bracket 11, a pushing head is arranged on the flip frame 21, the flip frame 21 flips to a horizontal state and slides, so as to push the fabric 14 to deform along the first chuck 12 and the second chuck 13 through the pushing head.

[0036] Specifically, the second clamp 13 and the first clamp 12 are provided with a pulling force detection unit for detecting the force generated when the fabric 14 is torn, but the strength machine 1 lacks accurate detection of the movement amount of the second clamp 13 and cannot be accurately reset to zero, so it is difficult to perform accurate elastic force recovery detection. When the added flip detection mechanism 2 is detecting, it first uses the second clamp 13 and the first clamp 12 to pull the fabric 14 to a critical deformation state, that is, the second clamp 13 moves away from the first clamp 12 to pull the fabric 14 to deform, and the position of the pulling force is detected by the second clamp 13, and then the flip frame 21 is flipped to a horizontal position, and then pushed against the flip frame 21 to slide in the horizontal direction to pass through the first end of the flip frame 21 (with Figure 1For reference, the first end is the right end) and the push head on the fabric 14 is used to drive the fabric 14 to deform. When the fabric 14 is deformed, the material will generate a rebound force, and the rebound force will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force. Then, the flip frame 21 can be slid back and forth multiple times to realize reciprocating detection, unify the variables, and increase the measurement accuracy.

[0037] According to the "Test Method for Elastic Recovery of Knitted Fabrics in Professional Standard of the People's Republic of China", "7.3.1 The determination of the tensile force at a constant elongation (rate) is to tighten the two ends of the sample in the length direction flatly in the clamp, place it on the support frame, start the instrument, apply a pre-tension of 0.1N, and stretch it to the predetermined elongation value and stop. After stopping for 1 minute, the instrument automatically records the test results. The test results are expressed as the average value of 5 sample data, rounded to - decimal places." Among them, the critical deformation is the application of pre-tension. After the tension is applied, the flip frame 21 in the horizontal position slides in the horizontal direction to push the fabric 14 to deform it. The process of horizontal pushing is to stretch the fabric 14 and stop when the predetermined elongation value is reached.

[0038] Furthermore, the strengthening machine 1 is a prior art, and the model may be: YG026H-250.

[0039] In the above technical solution, a flip detection mechanism 2 is added to the strength machine 1. When it is necessary to test the resilience of the fabric 14, the fabric 14 is first fixed on the first clamp 12 and the second clamp 13 for pulling, and the fabric 14 is pulled to a critical deformation state, and then the flip frame 21 is flipped to a horizontal state and slid, and the fabric 14 is pushed and deformed by the pushing head, so that the pulling force of the fabric 14 is detected by the first clamp 12 and the second clamp 13 during deformation to reflect the pulling force of elastic recovery.

[0040] As an embodiment provided by the present invention, a one-way sliding mechanism 3 is symmetrically arranged on the bracket 11, and the one-way sliding mechanism 3 includes a moving cover 31 rotating with the flip frame 21. Mold blocks are arranged on both sides of the flip frame 21, and the mold blocks move unidirectionally along the moving cover 31.

[0041] Specifically, the movable cover 31 is used to limit the flip frame 21 so that it can only approach the fabric 14 when sliding horizontally, so as to avoid rebound when the flip frame 21 slides, which affects the accuracy of the measurement process. When in use, the movable cover 31 is moved close to the bracket 11 to limit the movable cover 31 to achieve one-way sliding. When reciprocating sliding is required after the push-to-measurement, the movable cover 31 is moved away from the bracket 11 to cancel the one-way sliding restriction.

[0042] First, the fabric 14 is pulled to a critical deformation state through the second clamp 13 and the first clamp 12, and then the flip frame 21 is flipped to a horizontal position, and then the movable cover 31 is moved close to the bracket 11 to restrict the movable cover 31. After it is horizontal, the flip frame 21 is pushed to slide horizontally in one direction to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21. When the fabric 14 is deformed, a rebound force is generated by the material, and the rebound force will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force, and then the flip frame 21 is slid back and forth multiple times to achieve reciprocating detection.

[0043] As an embodiment provided by the present invention, two limiting blocks 33 are arranged on the movable cover 31, and one-way teeth 211 are arranged on the mold block in a linear array, wherein one limiting block 33 pushes against the one-way teeth 211 to drive the other one-way teeth 211 to move in the opposite direction to the one-way teeth 211;

[0044] The limiting block 33 and the one-way tooth 211 are both provided with inclined surfaces and vertical surfaces, wherein:

[0045] The one-way tooth 211 moves to push against one of the limiting blocks 33 along the inclined surface;

[0046] The movement of one of the limiting blocks 33 drives the other limiting block 33 to move to fit the vertical surface of the one-way tooth 211 .

[0047] Specifically, the movable cover 31 is provided with a first movable groove 311 and a second movable groove 312, and two limiting blocks 33 are respectively arranged in the first movable groove 311 and the second movable groove 312 through a first elastic member 331 and a second elastic member. When the flip frame 21 is pushed against the flip frame 21 in a horizontal position, the inclined surface of the one-way tooth 211 moves toward the fabric 14. At this time, the limiting block 33 on one side (with a first elastic member 331) is moved toward the fabric 14. Fig.10 For reference, one side is the left end and the other side is the right end) is first pushed along the inclined surface by the one-way tooth 211. At this time, the limiting block 33 on one side will overcome the pulling force of the first elastic member 331 and move along the inclined surface, and as the one-way tooth 211 continues to move, it drives the limiting block 33 on one side to move. The moving limiting block 33 on one side will drive the other limiting block 33 to move in the opposite direction to the one-way tooth 211. As the other limiting block 33 moves, it will overcome the limitation of the second elastic member, so that the inclined surface will pass over the vertical surface of the one-way tooth 211, so that the vertical surface of the other limiting block 33 is in contact with the vertical surface of the one-way tooth 211, so as to perform reverse limitation in real time, reduce the reverse activity gap during one-way sliding, and increase the test accuracy.

[0048] First, the fabric 14 is pulled to a critical deformation state through the second chuck 13 and the first chuck 12, and then the flip frame 21 is flipped to a horizontal position, and then the movable cover 31 is moved close to the bracket 11 to limit the movable cover 31, and slides unidirectionally, and then pushes the flip frame 21 horizontally. When pushing, the inclined surface of the one-way tooth 211 will move toward the fabric 14. At this time, the limiting block 33 on one side is first pushed along the inclined surface by the one-way tooth 211 to drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21. When the fabric 14 is deformed, a rebound force will be generated by the material, and the rebound force will pull the second chuck 13 and the first chuck 12 to detect the pulling force, thereby determining the rebound force, and then the reciprocating detection can be achieved by sliding the flip frame 21 back and forth multiple times.

[0049] As the best embodiment provided by the present invention, a sliding gear plate 35 is arranged in the movable cover 31 . The sliding gear plate 35 is coupled to one of the limiting blocks 33 via the reversing gear 34 , and the other limiting block 33 is elastically connected to the sliding gear plate 35 .

[0050] Specifically, a slideway is provided between the first movable groove 311 and the second movable groove 312, and the sliding gear plate 35 is slidably connected in the slideway, and a third elastic member 351 is provided between the two. A coupling tooth is provided on one of the limiting blocks 33, and the reversing gear 34 is rotatably connected between the first movable groove 311 and the slideway. The reversing gear 34 is always coupled with the sliding gear plate 35. When the limiting block 33 on one side overcomes the pulling force of the first elastic member 331 and moves along the inclined surface, the coupling teeth on the limiting block 33 on one side will gradually approach the reversing gear 34, and drive the reversing gear 34 to rotate so as to couple the sliding gear plate 35 to slide along the slideway to compress the third elastic member 351, thereby driving the other limiting block 33 to overcome the limitation of the second elastic member, so that the inclined surface will pass over the vertical surface of the one-way tooth 211, so that the vertical surface of the other limiting block 33 is in contact with the vertical surface of the one-way tooth 211.

[0051] First, the fabric 14 is pulled to a critical deformation state through the second clamp 13 and the first clamp 12, and then the flip frame 21 is flipped to a horizontal position, and then the movable cover 31 is moved close to the bracket 11 to limit the movable cover 31, and slides unidirectionally, and then pushes the flip frame 21 horizontally. When pushing, the inclined surface of the one-way tooth 211 will move toward the fabric 14. At this time, the limiting block 33 on one side is first pushed along the inclined surface by the one-way tooth 211 to drive the sliding tooth plate 35 to slide and drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21. When the fabric 14 is deformed, a rebound force will be generated by the material, and the rebound force will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force, and then the flip frame 21 can be slid back and forth for multiple times to achieve reciprocating detection.

[0052] As an embodiment provided by the present invention, a rotating ring 32 is rotatably connected to the bracket 11 , the flip frame 21 is slidably connected to the rotating ring 32 , and the movable cover 31 is driven to move along the rotating ring 32 to couple or decouple the limiting block 33 with the one-way tooth 211 .

[0053] Specifically, a rotating groove 111 is provided on the bracket 11, and the rotating ring 32 is rotatably connected to the rotating groove 111. The flip frame 21 is slidably connected to the rotating ring 32, and can slide along the rotating ring 32 and flip to two limit states with the rotating ring 32. The limit states are horizontal state detection or vertical state storage. A sliding rod 313 is provided on the movable cover 31. The sliding rod 313 is damped and slidably connected to the sliding hole 321 provided on the rotating ring 32, so as to slide along the sliding rod 313 and the sliding hole 321 to drive the limiting block 33 to approach or move away from the one-way tooth 211.

[0054] First, the fabric 14 is pulled to a critical deformation state by the second clamp 13 and the first clamp 12, and then the flip frame 21 is flipped to a horizontal position along the rotating ring 32, and then the movable cover 31 is slid along the sliding rod 313 and the sliding hole 321 to move close to the bracket 11 to limit the movable cover 31, and perform unidirectional sliding, and then push the flip frame 21 horizontally. When pushing, the inclined surface of the one-way tooth 211 will move toward the fabric 14, at this time, the limiting block 33 on one side is first pushed along the inclined surface by the one-way tooth 211, so as to drive the sliding tooth plate 35 to slide and drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21, and when the fabric 14 is deformed, a rebound force will be generated by the material, and the rebound force will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force, and then the flip frame 21 can be reciprocated and slid back and forth for multiple times to achieve reciprocating detection.

[0055] As an embodiment provided by the present invention, a fitting component 5 is disposed at the central axis of the flip frame 21 . The fitting component 5 includes an elastic cover 51 . The elastic cover 51 is driven to bend to change the area of ​​the fitting fabric 14 .

[0056] Specifically, the elastic cover 51 is an elastic arc. When sliding in the horizontal direction with the flip frame 21, the elastic cover 51 pushes the fabric 14 to deform. The arc-shaped contour can prevent the elastic cover 51 from tilting too much, causing local excessive stretching and damage to the fabric 14. The bending amplitude can also be adjusted to reduce damage to the fabric 14 during pushing, so as to adapt to fabrics 14 of different materials.

[0057] First, the fabric 14 is pulled to a critical deformation state by the second clamp 13 and the first clamp 12, and then the bending amplitude of the elastic cover 51 is adjusted according to the material of the fabric 14, and then the flip frame 21 is flipped to a horizontal position along the rotating ring 32, and then the movable cover 31 is slid along the sliding rod 313 and the sliding hole 321 to move close to the bracket 11 to restrict the movable cover 31, and performs unidirectional sliding, and then pushes against the flip frame 21 when it is horizontal. When pushing, the inclined surface of the one-way tooth 211 moves toward the fabric 14, and at this time, the limit on one side The control block 33 is first pushed along the inclined surface by the one-way tooth 211 to drive the sliding tooth plate 35 to slide and drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21. When the fabric 14 is deformed, the material will generate a rebound force, and the rebound force will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force, and then the flip frame 21 can be slid back and forth multiple times to achieve reciprocating detection.

[0058] As an embodiment provided by the present invention, an extension rod 52 is provided on the flip frame 21 , a sliding cover 53 is sleeved on the extension rod 52 , and connecting rods 531 connecting the two ends of the elastic cover 51 are provided at both ends of the sliding cover 53 .

[0059] Specifically, an external thread is provided on the extension rod 52, and a threaded sleeve 54 is rotatably connected to the sliding cover 53. The threaded sleeve 54 is rotatably connected to the external thread of the extension rod 52. When adjustment is needed, the threaded sleeve 54 is rotated to slide the sliding cover 53 along the extension rod 52, so that the sliding cover 53 moves and drives the extension rod 52 to flip to adjust the bending degree of the elastic cover 51.

[0060] First, the fabric 14 is pulled to a critical deformation state by the second clamp 13 and the first clamp 12, and then according to the material of the fabric 14, the threaded sleeve 54 is rotated to slide the sliding cover 53 along the extension rod 52 to adjust the bending amplitude of the elastic cover 51, and then the flip frame 21 is flipped to a horizontal position along the rotating ring 32, and then the movable cover 31 is slid along the sliding rod 313 and the sliding hole 321 to move close to the bracket 11 to restrict the movable cover 31, and performs unidirectional sliding, and then pushes against the flip frame 21 when it is horizontal, and the inclined surface of the one-way tooth 211 is toward the fabric 1 4 moves, at this time, the limiting block 33 on one side is first pushed by the one-way tooth 211 along the inclined surface, so as to drive the sliding tooth plate 35 to slide and drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21, and when the fabric 14 is deformed, the material will generate a rebound force, and the rebound force will pull the second clamp 13 and the first clamp 12 to detect the pulling force, so as to determine the rebound force, and then the flip frame 21 is reciprocated for multiple times to realize reciprocating detection.

[0061] As an embodiment provided by the present invention, a limit assembly 4 is provided on the flip frame 21, and the limit assembly 4 includes a slide frame 43, and the slide frame 43 is driven by the coupled one-way teeth 211 to move along the mold block;

[0062] The sliding frame 43 is threadedly connected with a locking screw 431 , and the locking screw 431 is locked against the mold block.

[0063] Specifically, the sliding frame 43 is rotatably connected with a one-way coupling wheel 41, which rotates counterclockwise (in Figure 6 When the one-way teeth 211 are rotated, the one-way teeth 211 are coupled in one direction to drive the slide frame 43 to slide along the flip frame 21, thereby adjusting the limit position of the flip frame 21 when sliding along the horizontal position, and then the locking screw 431 is rotated to lock the position of the slide frame 43;

[0064] When unlocking is required, the one-way coupling wheel 41 is rotated clockwise, and the slide frame 43 can be returned to the position for physical return to zero, so as to facilitate the next adjustment position.

[0065] First, the fabric 14 is pulled to a critical deformation state by the second chuck 13 and the first chuck 12, and then according to the material of the fabric 14, the threaded sleeve 54 is rotated to slide the sliding cover 53 along the extension rod 52 to adjust the bending amplitude of the elastic cover 51, and then the flip frame 21 is flipped to a horizontal position along the rotating ring 32, and then the one-way coupling wheel 41 is rotated clockwise to retract the sliding frame 43 along the flip frame 21 for physical return to zero, and then the one-way coupling wheel 41 is rotated counterclockwise to unidirectionally couple the one-way teeth 211 to drive the sliding frame 43 to slide along the flip frame 21, so as to adjust the limit position of the flip frame 21 when sliding along the horizontal position, and then the movable cover 31 is slid along the slide rod 313 and the slide hole 321 to move close to the flip frame 21. The near bracket 11 limits the movable cover 31, slides in one direction, and pushes against the flip frame 21 horizontally. When pushing, the inclined surface of the one-way tooth 211 will move toward the fabric 14. At this time, the limiting block 33 on one side is first pushed along the inclined surface by the one-way tooth 211 to drive the sliding tooth plate 35 to slide and drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21. When the fabric 14 is deformed, the material will generate a rebound force, which will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force, and then the flip frame 21 can be slid back and forth multiple times to achieve reciprocating detection.

[0066] As the optimal embodiment provided by the present invention, a turntable 42 is rotatably connected to the central axis of the one-way coupling wheel 41, and elastic teeth 421 are arranged in a circular array on the turntable 42. The elastic teeth 421 are engaged in the inclined grooves provided on the inner wall of the one-way coupling wheel 41. A rotating head 422 is provided on the turntable 42, and a locking groove is provided on the rotating head 422. A locking protrusion 314 is provided on the movable cover 31.

[0067] Specifically, the rotating head 422 is provided with a groove that matches the locking protrusion 314. When the one-way coupling wheel 41 is rotated (in Fig.11 The one-way coupling wheel 41 will move along the one-way tooth 211 for coupling. After being locked, when the flip frame 21 is moved in the horizontal direction, the locking protrusion 314 will be inserted into the groove on the rotating head 422 to drive the elastic tooth 421 to slide out along the inclined groove to generate vibration feedback. Then, the rotating head 422 is restricted and locked by the locking protrusion 314 so that the user can feel that the push has stopped.

[0068] First, the fabric 14 is pulled to a critical deformation state by the second chuck 13 and the first chuck 12, and then according to the material of the fabric 14, the threaded sleeve 54 is rotated to slide the sliding cover 53 along the extension rod 52 to adjust the bending amplitude of the elastic cover 51, and then the flip frame 21 is flipped to a horizontal position along the rotating ring 32, and then the one-way coupling wheel 41 is rotated clockwise to retract the sliding frame 43 along the flip frame 21 for physical return to zero, and then the one-way coupling wheel 41 is rotated counterclockwise to unidirectionally couple the one-way teeth 211 to drive the sliding frame 43 to slide along the flip frame 21, so as to adjust the limit position of the flip frame 21 when sliding along the horizontal position, and then the movable cover 31 is slid along the slide rod 313 and the slide hole 321 to move close to the flip frame 21. The near bracket 11 limits the movable cover 31, slides in one direction, and pushes against the flip frame 21 horizontally. When pushing, the inclined surface of the one-way tooth 211 will move toward the fabric 14. At this time, the limiting block 33 on one side is first pushed along the inclined surface by the one-way tooth 211 to drive the sliding tooth plate 35 to slide and drive the other limiting block 33 to overcome the limitation of the second elastic member and fit the vertical surface of the one-way tooth 211, so as to drive the fabric 14 to deform through the pushing head on the first end of the flip frame 21. When the fabric 14 is deformed, the material will generate a rebound force, which will pull the second clamp 13 and the first clamp 12 to detect the pulling force, thereby determining the rebound force, and then the flip frame 21 can be slid back and forth multiple times to achieve reciprocating detection.

[0069] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision fabric elastic recovery testing device, comprising a strength machine (1), which comprises a bracket (11) and a first clamp (12) and a second clamp (13) sliding along the bracket (11), a fabric (14) being arranged between the first clamp (12) and the second clamp (13), characterized in that: It also comprises a flip detection mechanism (2), which comprises a flip frame (21) rotatably connected to the bracket (11), the flip frame (21) being provided with a pushing head, the flip frame (21) flipping to a horizontal state and sliding, so as to push the fabric (14) along the first clamp (12) and the second clamp (13) to deform through the pushing head.

2. A high-precision fabric elastic recovery test device according to claim 1, characterized in that: A one-way sliding mechanism (3) is symmetrically arranged on the bracket (11), and the one-way sliding mechanism (3) comprises a moving cover (31) that rotates with the flip frame (21). Mold blocks are arranged on both sides of the flip frame (21), and the mold blocks move one-way along the moving cover (31).

3. A high-precision fabric elastic recovery testing device according to claim 2, characterized in that: The movable cover (31) is provided with two limiting blocks (33), and the mold block is provided with one-way teeth (211) in a linear array, wherein one of the limiting blocks (33) pushes against the one-way teeth (211) to drive the other limiting block (33) to move in the opposite direction to the one-way teeth (211).

4. A high-precision fabric elastic recovery testing device according to claim 3, characterized in that: The limiting block (33) and the one-way tooth (211) are both provided with an inclined surface and a vertical surface, wherein: The one-way tooth (211) moves along the inclined surface to push against one of the limiting blocks (33); The movement of one of the limiting blocks (33) drives the other limiting block (33) to move and fit the vertical surface of the one-way tooth (211).

5. A high-precision fabric elastic recovery testing device according to claim 4, characterized in that: A sliding tooth plate (35) is arranged in the movable cover (31), and the sliding tooth plate (35) is coupled to one of the limiting blocks (33) via a reversing gear (34), and the other limiting block (33) is elastically connected to the sliding tooth plate (35).

6. A high-precision fabric elastic recovery test device according to claim 3, characterized in that: The bracket (11) is rotatably connected to a rotating ring (32), the flip frame (21) is slidably connected to the rotating ring (32), and the movable cover (31) is driven to move along the rotating ring (32) so that the limiting block (33) couples or decouples the one-way tooth (211).

7. A high-precision fabric elastic recovery test device according to claim 1, characterized in that: A fitting component (5) is arranged at the central axis of the turnover frame (21), and the fitting component (5) comprises an elastic cover (51), and the elastic cover (51) is driven to bend to change the area of ​​the fitting fabric (14).

8. A high-precision fabric elastic recovery testing device according to claim 7, characterized in that: An extension rod (52) is provided on the flip frame (21), a sliding cover (53) is sleeved on the extension rod (52), and connecting rods (531) connecting the two ends of the elastic cover (51) are provided at both ends of the sliding cover (53).

9. A high-precision fabric elastic recovery testing device according to claim 3, characterized in that: A limit assembly (4) is arranged on the flip frame (21), and the limit assembly (4) comprises a slide frame (43), and the slide frame (43) is driven and coupled to the one-way teeth (211) to move along the mold block.

10. A high-precision fabric elastic recovery testing device according to claim 9, characterized in that: The sliding frame (43) is threadedly connected with a locking screw (431), and the locking screw (431) is fitted against the mold block for locking.

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