A fabric elasticity testing device

Abstract

The utility model relates to the field of textile fabric testing equipment, and discloses a fabric elasticity testing equipment, comprising a support and a top plate arranged above the support, a plurality of clamping claws are arranged above the top plate, and the plurality of clamping claws are distributed in a circular array around the central axis of the top plate; a sliding block capable of lifting and lowering is arranged between the support and the top plate, and the plurality of clamping claws are connected to the sliding block through a connecting rod mechanism; the plurality of clamping claws are connected to the same sliding block through the connecting rod mechanism, and under the lifting and lowering drive of the sliding block, the plurality of clamping claws can be synchronously displaced in the same direction in the horizontal direction, and because the plurality of clamping claws are distributed in a circular array around the central axis of the top plate, the equipment can not only realize unidirectional testing for fabrics, but also realize multi-directional testing, and can also meet the needs of testing fabrics of various shapes, thereby increasing the application range of the equipment and reducing the procurement cost.

Description

Technical Field

[0001] The utility model relates to the field of textile fabric testing equipment, in particular to a fabric elasticity testing equipment. Background Art

[0002] Fabric refers to the raw materials used to make clothing, household items, industrial products, etc. Some products have higher requirements on the elasticity of fabrics. Therefore, in the production process of fabrics, in order to detect the elasticity and elastic limit of the fabrics, it is usually necessary to conduct elasticity tests on the fabrics.

[0003] To this end, the Chinese invention patent with publication number CN114371079A announced on April 19, 2022 a home curtain fabric elasticity testing system and testing method, the system including a test bench, the test bench is equipped with an elastic stretching mechanism, the elastic stretching mechanism includes two travel frames set for reverse driving motion, and the two travel frames are correspondingly fixed with tension sensors, the two tension sensors are correspondingly connected with pulling mechanisms, and the two pulling mechanisms are arranged in mirror images relative to each other; the system provided by the utility model has a simple structure, and can realize automatic opening of the test fabric under manual assisted operation, which can avoid insufficient opening of the fabric in the non-elastic stretching direction, and can effectively control the consistency of the fabric opening amplitude, which is convenient for elastic testing of the fabric and improves the accuracy and effectiveness of the fabric elasticity test.

[0004] However, most of the existing devices including but not limited to those disclosed in the above patents use two flat clamps to fix the fabric, and then use a motor to stretch it or a mechanical structure to stretch it manually; they can only perform unidirectional stretching tests on woven fabrics, but cannot perform tests in multiple directions, and they can only test fabrics of a single shape, but cannot test products of various shapes. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a fabric elasticity testing device, in which a connecting rod mechanism drives a clamping jaw to move in a horizontal direction under the lifting drive of a slider; a plurality of connecting rod mechanisms, driven by the same slider, can drive a plurality of clamping jaws to move synchronously in a horizontal direction, which can realize not only a single-direction test but also a multi-direction test, thereby greatly improving the application scope of the device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A fabric elasticity testing device comprises a support and a top plate arranged above the support, a plurality of clamping jaws for clamping fabrics which can be synchronously moved horizontally away from the center position of the top plate are arranged above the top plate, and the plurality of clamping jaws are distributed in a circular array around the center axis of the top plate; a sliding block which can be raised and lowered is arranged between the support and the top plate, and the plurality of clamping jaws and the sliding block are connected by a connecting rod mechanism.

[0008] In a preferred embodiment of the utility model, the connecting rod mechanism includes a telescopic rod and a connecting block, one end of the telescopic rod is fixedly connected to the clamping claw, and the other end is rotatably connected to the sliding block through a second rotating block; a first rotating block is slidably sleeved on the telescopic rod, and one end of the first rotating block is rotatably connected to the connecting block; the connecting block is fixedly connected to the top plate through two cross bars, and the first rotating block is located between the two cross bars.

[0009] In a preferred embodiment of the utility model, a screw rod is rotatably installed between the support and the top plate, the screw rod is screwed and penetrated on the slider, and the screw rod is located at the center of the top plate.

[0010] In a preferred embodiment of the utility model, a fixing plate parallel to the top plate is arranged on the inner side of the support, a driving motor is installed below the fixing plate, and an output end of the driving motor is connected to the screw rod through a coupling.

[0011] In a preferred embodiment of the utility model, the top plate and the support are fixedly connected via a support rod, and a limiting mechanism for limiting the moving range of the slider is provided on one side of the top plate.

[0012] In a preferred embodiment of the utility model, the limit mechanism includes a mounting plate arranged on one side of the top plate, and two limit switches are arranged on the mounting plate; the bottom of the slider is fixedly connected to a limit sensing plate, and one end of the limit sensing plate can pass through the notch of the limit switch in the longitudinal direction.

[0013] In a preferred embodiment of the utility model, the clamping jaw comprises a first clamping block and a second clamping block which can be relatively opened and closed along the longitudinal direction, and the first clamping block is fixedly connected to the telescopic rod.

[0014] In a preferred embodiment of the utility model, two knobs are arranged opposite to each other on the second clamping block, and one end of the knob passes through the second clamping block and is screwed and embedded in the first clamping block. Beneficial Effects

[0015] (1) In the present invention, a plurality of clamps are connected to the same slider through a connecting rod mechanism. Under the lifting drive of the slider, the plurality of clamps can be synchronously displaced in the same direction in the horizontal direction. Moreover, since the plurality of clamps are distributed in a circular array around the central axis of the top plate, the device can not only realize unidirectional testing of fabrics, but also multi-directional testing. Moreover, it can also meet the needs of testing fabrics of various shapes, thereby increasing the scope of application of the device and reducing the procurement cost.

[0016] (2) In the present invention, the device can perform a variety of tests, including fatigue tests and tensile strength tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the clamping jaws of the utility model;

[0019] Among them, 11, support; 12, top plate; 13, support rod; 2, clamping claw; 21, first clamping block; 22, second clamping block; 23, knob; 3, slider; 4, screw rod; 51, telescopic rod; 52, first rotating block; 53, connecting block; 54, cross bar; 55, second rotating block; 6, limit mechanism; 61, mounting plate; 62, limit switch; 63, limit sensor; 7, fixing plate; 8, drive motor; 9, coupling. DETAILED DESCRIPTION

[0020] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] like Figure 1 As shown, a fabric elasticity testing device includes a frame and a plurality of clamping jaws 2 arranged above the frame for clamping the fabric, the plurality of clamping jaws 2 are distributed in a circular array around the central axis of the frame, and the plurality of clamping jaws 2 can move horizontally away from the center position of the frame synchronously.

[0022] As mentioned above, the frame includes a support 11, and a top plate 12 is fixedly connected to the top of the support 11 through a support rod 13. The top plate 12 is parallel to the top surface of the support 11, and the support rod 13 is perpendicular to the top plate 12; a slider 3 that can be raised and lowered is arranged between the support 11 and the top plate 12, and multiple clamps 2 are connected to the slider 3 through a connecting rod mechanism; the support rod 13 is arranged at the edge of the support 11 and the top plate 12 to avoid affecting the lifting and lowering movement of the slider 3.

[0023] Specifically, the clamping jaws 2 are disposed above the top plate 12 , and the plurality of clamping jaws 2 are distributed in a circular array around the central axis of the top plate 12 , and the plurality of clamping jaws 2 can move horizontally away from the central position of the top plate 12 synchronously.

[0024] Multiple clamps 2 are connected to the same slider 3 through a connecting rod mechanism. Under the lifting and lowering drive of the slider 3, multiple clamps 2 can be synchronously displaced in the same direction along the horizontal direction. Since multiple clamps 2 are distributed in a circular array around the central axis of the top plate 12, the device can not only realize unidirectional testing of fabrics, but also multi-directional testing, and can also meet the testing of fabrics of various shapes, thereby increasing the scope of application of the equipment and reducing the user's procurement needs.

[0025] The connecting rod mechanism includes a telescopic rod 51 and a connecting block 53. One end of the telescopic rod 51 is fixedly connected to the clamping jaw 2, and the other end is rotatably connected to the slider 3 through a second rotating block 55. A first rotating block 52 is slidably sleeved on the telescopic rod 51, and one end of the first rotating block 52 is rotatably connected to the connecting block 53. The connecting block 53 is fixedly connected to the top plate 12 through two cross bars 54, and the first rotating block 52 is located between the two cross bars 54.

[0026] As mentioned above, the telescopic rod 51 is connected to the first rotating block 52 through a linear bearing, which can reduce the friction and wear between the two; the connecting block 53 is fixedly installed on the side of the top plate 12 through two opposite cross bars 54, that is, one end of the cross bar 54 is fixedly connected to the connecting block 53, and the other end is fixedly connected to the side of the top plate 12, and the telescopic rod 51 is located on the inner side of the connecting block 53 and the two cross bars 54; the second rotating block 55 is fixedly installed on the outer side of the slider 3, and is rotatably connected to the end of the telescopic rod 51 through a rotating shaft, and a bearing is also provided between the rotating shaft and the second rotating block 55 to improve the accuracy and stability of the flipping.

[0027] When the slider 3 moves upward, it drives the second rotating block 55 upward, and the end of the telescopic rod 51 close to the slider 3 moves upward accordingly and flips outward in the longitudinal direction relative to the second rotating block 55; the telescopic rod 51 moves outward in the axial direction relative to the first rotating block 52, and drives the first rotating block 52 to flip upward in the longitudinal direction relative to the connecting block 53. At this time, under the joint action of the slider 3 and the connecting rod mechanism (i.e., the telescopic rod 51, the first rotating block 52, the connecting block 53, the second rotating block 55, etc.), the clamping jaws 2 move away from the center position of the top plate 12 in the horizontal direction. When multiple clamping jaws 2 move synchronously, the stretching of the cloth can be completed.

[0028] When the slider 3 moves downward, contrary to the above, the clamping jaws 2 move horizontally toward the center of the top plate 12. When multiple clamping jaws 2 move synchronously, the cloth can achieve its own contraction.

[0029] For the lifting and lowering of the above-mentioned slider 3, a screw rod 4 is rotatably installed between the support 11 and the top plate 12. The screw rod 4 is screwed and penetrated on the slider 3, and the screw rod 4 is located at the center of the top plate 12. The screw rod 4 is screwed and connected with the slider 3. When the screw rod 4 rotates around its own axis, the slider 3 can reciprocate along the axis direction of the screw rod 4. At this time, the slider 3 adopts a screw nut.

[0030] In order to rotate the screw rod 4 , a fixing plate 7 parallel to the top plate 12 is provided on the inner side of the support 11 , a driving motor 8 is installed below the fixing plate 7 , and an output end of the driving motor 8 is connected to the screw rod 4 through a coupling 9 .

[0031] Specifically, a positioning groove is opened on the inner side of the support 11. After the two ends of the fixing plate 7 are respectively embedded in the positioning grooves, the fixing plate 7 and the support 11 are fixedly connected by fasteners; the driving motor 8 adopts a servo motor, and a corresponding coupling 9 is installed on its output shaft. One end of the coupling 9 is connected to the screw rod 4, and bearings are arranged between the two ends of the screw rod 4 and the top plate 12 and the support 11; that is, the torque output by the driving motor 8 will be output to the screw rod 4 through the coupling 9, driving the screw rod 4 to rotate around its own axis, thereby driving the slider 3 to move along its axial direction.

[0032] In order to limit the moving range of the slider 3, a limiting mechanism 6 is arranged on one side of the top plate 12; the limiting mechanism 6 includes a mounting plate 61 arranged on one side of the top plate 12, and two limit switches 62 are arranged on the mounting plate 61; the bottom of the slider 3 is fixedly connected to a limiting sensing plate 63, and one end of the limiting sensing plate 63 can pass through the notch of the limit switch 62 along the longitudinal direction.

[0033] The longitudinal direction is the axial direction of the screw rod 4, which is perpendicular to the top plate 12; the limit switch 62 adopts the existing technology to limit the movement limit position of the slider 3; the limit sensing piece 63 moves synchronously with the slider 3, and when the limit sensing piece 63 passes through any limit switch 62, the drive motor 8 stops working or rotates in the opposite direction so that the displacement of the slider 3 exceeds the stroke; wherein, when the limit sensing piece 63 passes through the notch of the limit switch 62, the limit switch 62 can sense the existence of the limit sensing piece 63 through infrared sensing technology.

[0034] like Figure 2 As shown, the clamping jaw 2 includes a first clamping block 21 and a second clamping block 22 that can be relatively opened and closed in the longitudinal direction, and the first clamping block 21 is fixedly connected to the telescopic rod 51. The first clamping block 21 and the second clamping block 22 of the clamping jaw 2 can be relatively opened and closed in the longitudinal direction. Initially, the clamping jaw 2 is opened, and one end of the fabric is placed between the first clamping block 21 and the second clamping block 22. Then, the clamping jaw 2 is closed, and the first clamping block 21 and the second clamping block 22 firmly clamp the fabric.

[0035] As mentioned above, two knobs 23 are arranged on the second clamping block 22, and one end of the knob 23 penetrates the second clamping block 22 and is screwed into the first clamping block 21. The opening and closing of the clamping jaws 2 can be adjusted by rotating the knob 23; as the knob 23 is rotated, it moves along the axis relative to the first clamping block 21, and when the two are close to each other, the clamping jaws 2 tend to close, and when the two are away from each other, the clamping jaws 2 tend to open.

[0036] Furthermore, the contact surfaces of the first clamping block 21 and the second clamping block 22 adopt mutually interlocking serrated structures, so as to increase the clamping friction of the clamping jaws 2 on the fabric, ensuring that the fabric will not fall off the clamping jaws 2 during the stretching process.

[0037] In addition, the lower part of the first clamp 21 is parallel to the axis of the corresponding telescopic rod 51, the upper part of the first clamp 21 is parallel to the axis of the screw rod 4, and the second clamp 22 is also parallel to the axis direction of the screw rod 4. The purpose of such design is to ensure that the clamped fabric can be stably stretched in the horizontal direction to avoid affecting the test results.

[0038] Working principle:

[0039] The fabric product is fixed on the clamping jaw 2, and the driving motor 8 drives the screw rod 4 to rotate, thereby driving the slider 3 to move up and down, and the telescopic rod 51 is telescoped up and down in the first rotating block 52, and the first rotating block 52 rotates accordingly. At the same time, the other end of the telescopic rod 51 rotates relative to the second rotating block 55, and the clamping jaw 2 moves horizontally away from the center position of the top plate 12; when multiple clamping jaws 2 move synchronously, the stretching detection of the fabric product can be realized.

[0040] Among them, the number of jaws 2 is preferably set to an even number, for example, four jaws 2 are distributed in a circular array around the center position of the top plate 12 (i.e., the axis of the wire rod 4); for products that only require unidirectional tensile testing, a symmetrical pair of jaws 2 can be used to complete the test; for products that require multi-directional tensile testing, two symmetrical pairs of jaws 2 can be used to complete the test.

[0041] When conducting a tensile strength test, the drive motor 8 rotates unidirectionally until the fabric product is damaged, that is, the corresponding jaws 2 clamp the fabric and then simultaneously move away from the center position of the top plate 12 until the fabric product is damaged; when conducting a fatigue test, the drive motor 8 can complete the test by rotating forward and reverse, that is, after the corresponding jaws 2 clamp the fabric, the jaws 2 reciprocate horizontally along their respective moving directions.

[0042] In summary, the device uses a motor in conjunction with a screw rod 4 and a mechanical structure, so that it can not only stretch fabric products in multiple directions, but also test products of various shapes; in addition, the device can also perform a variety of tests, including fatigue tests and tensile strength tests, which greatly improves the applicability of the equipment and reduces the customer's procurement cost.

[0043] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A fabric elasticity testing device, characterized in that: It comprises a support (11) and a top plate (12) arranged above the support (11); a plurality of clamping claws (2) for clamping fabrics are arranged above the top plate (12) and are capable of synchronously moving horizontally away from the center position of the top plate (12); the plurality of clamping claws (2) are distributed in a circular array around the center axis of the top plate (12); A sliding block (3) capable of being raised and lowered is provided between the support (11) and the top plate (12), and the plurality of clamping jaws (2) and the sliding block (3) are connected via a connecting rod mechanism.

2. The fabric elasticity testing device according to claim 1, characterized in that: The connecting rod mechanism comprises a telescopic rod (51) and a connecting block (53); one end of the telescopic rod (51) is fixedly connected to the clamping claw (2), and the other end is rotatably connected to the slider (3) via a second rotating block (55); A first rotating block (52) is slidably sleeved on the telescopic rod (51), and one end of the first rotating block (52) is rotatably connected to the connecting block (53); the connecting block (53) is fixedly connected to the top plate (12) via two cross bars (54), and the first rotating block (52) is located between the two cross bars (54).

3. The fabric elasticity testing device according to claim 2, characterized in that: A screw rod (4) is rotatably mounted between the support (11) and the top plate (12); the screw rod (4) is screwed and penetrated on the slider (3); and the screw rod (4) is located at the center of the top plate (12).

4. The fabric elasticity testing device according to claim 3, characterized in that: A fixing plate (7) parallel to the top plate (12) is arranged on the inner side of the support (11), a driving motor (8) is installed below the fixing plate (7), and an output end of the driving motor (8) is connected to the screw rod (4) via a coupling (9).

5. The fabric elasticity testing device according to claim 4, characterized in that: The top plate (12) and the support (11) are fixedly connected via a support rod (13), and a limiting mechanism (6) for limiting the moving range of the sliding block (3) is provided on one side of the top plate (12).

6. The fabric elasticity testing device according to claim 5, characterized in that: The limit mechanism (6) comprises a mounting plate (61) arranged on one side of the top plate (12), and two limit switches (62) are arranged on the mounting plate (61); a limit sensing sheet (63) is fixedly connected to the bottom of the slider (3), and one end of the limit sensing sheet (63) can pass through the notch of the limit switch (62) in the longitudinal direction.

7. The fabric elasticity testing device according to any one of claims 2 to 6, characterized in that: The clamping jaw (2) comprises a first clamping block (21) and a second clamping block (22) which can be relatively opened and closed in the longitudinal direction, and the first clamping block (21) is fixedly connected to the telescopic rod (51).

8. The fabric elasticity testing device according to claim 7, characterized in that: Two knobs (23) are arranged opposite to each other on the second clamping block (22), and one end of the knob (23) passes through the second clamping block (22) and is screwed and embedded in the first clamping block (21).

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