Fabric stretching testing device

Abstract

The utility model discloses a fabric stretching testing device, which comprises a base, a stretching mechanism and a clamping mechanism, the stretching mechanism is positioned on the base and comprises a fixed seat, a movable seat and a driving piece, and the driving piece is used for driving the movable seat to move towards or away from the fixed seat. The clamping mechanism comprises two clamping assemblies which are arranged on the fixed seat and the movable seat respectively, each clamping assembly comprises a clamping rack, a winding shaft, a pressing block and a locking piece, and the winding shafts are rotationally arranged on the clamping racks; the pressing block is located on the winding shaft and used for pressing the fabric on the winding shaft. The locking piece is used for locking the winding shaft on the clamping rack so as to restrain rotation of the winding shaft. According to the utility model, the problem of fabric slipping in the testing process can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology, and in particular to a fabric tensile testing device. Background Technology

[0002] In the textile fabric production process, the tensile strength of the fabric is an important indicator for measuring product quality. Therefore, it is necessary to test the tensile strength of the fabric during production. Existing tensile testing equipment mostly uses clamps to hold the fabric, but during the testing process, the tensile force can easily cause the fabric to slip off the clamps, thus affecting the measurement results. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a fabric stretching test device that can effectively avoid the problem of fabric slippage during the test process.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a fabric tensile testing device, comprising...

[0005] Base;

[0006] A tensioning mechanism, located on the base, includes a fixed seat, a movable seat, and a driving member, wherein the driving member is used to drive the movable seat to move toward or away from the fixed seat;

[0007] The clamping mechanism includes two clamping assemblies respectively disposed on the fixed base and the movable base. Each clamping assembly includes a clamping frame, a winding shaft, a pressure block, and a locking member. The winding shaft is rotatably disposed on the clamping frame. The pressure block is located on the winding shaft and is used to press the fabric onto the winding shaft. The locking member is used to lock the winding shaft on the clamping frame to inhibit the rotation of the winding shaft.

[0008] In use, first place one end of the fabric against the winding shaft of the fixed base, and use the pressure block to press the fabric firmly onto the winding shaft; rotate the winding shaft so that the fabric winds around the shaft at least 1-2 times; lock the winding shaft onto the clamping frame using the locking device, at which point one end of the fabric is fixed to the winding shaft of the fixed base; then fix the other end of the fabric to the winding shaft of the moving base in the same way; start the drive unit, and the moving base moves away from the fixed base to stretch the fabric. Because the locking device can inhibit the rotation of the winding shaft, and the pressure block is pressed against the end of the fabric due to the wrapping of the fabric, the fabric wound on the winding shaft will not slip due to tension.

[0009] It should be noted that the tension sensor can be connected to the clamping assembly on the mounting base to measure the tensile strength of the fabric.

[0010] The beneficial effects of this fabric tensile testing device are as follows:

[0011] Firstly, the pressure blocks firmly press the fabric onto the winding shaft. Then, the rotation of the winding shaft causes the fabric to wind around it, increasing the connection strength between the fabric and the shaft. Next, the locking mechanism inhibits the rotation of the winding shaft relative to the clamping frame, preventing fabric slippage during unwinding. Simultaneously, the fabric wraps around the pressure blocks during winding. During subsequent tensile testing, the winding shaft is locked in place by the locking mechanism, preventing rotation. Therefore, the fabric wrapped around the pressure blocks is further pressed against them by tensile force, preventing the pressure blocks from detaching from the winding shaft. This ensures the pressure blocks effectively compress the fabric ends, further enhancing the fabric's fixation on the winding shaft and preventing fabric slippage during testing.

[0012] Furthermore, the winding shaft includes a mandrel and a winding cylinder fitted on the mandrel; the surface of the winding cylinder has a groove for the pressure block to be embedded in. The cooperation between the groove and the pressure block allows the fabric to exhibit a zigzag-shaped pressing effect on the surface of the winding shaft, further enhancing the fixing effect on the fabric.

[0013] Furthermore, when the pressure block is embedded in the pressure groove, the surface formed by the outer wall of the pressure block does not protrude beyond the arc surface formed by the outer wall of the winding cylinder. That is, the pressure block can be completely embedded in the pressure groove to avoid bulging during the fabric winding process.

[0014] Furthermore, the pressure block has an elastic sealing layer on its side wall facing the pressure groove to improve the pressure effect of the pressure block on the fabric.

[0015] Furthermore, one end of the pressure groove is the fabric inlet end, and the end of the pressure block away from the fabric inlet end has a notch. The notch is designed to facilitate the separation of the pressure block from the pressure groove after the test.

[0016] Furthermore, one end of the mandrel has a first locking groove, and the clamping frame has a second locking groove. During the rotation of the winding shaft, the locking element can be simultaneously inserted into both the first and second locking grooves. The cooperation between the first and second locking grooves and the locking element can suppress the rotation of the mandrel relative to the clamping frame.

[0017] Furthermore, the locking component includes a locking base plate, and the two ends of the locking base plate are bent to form a first locking block and a second locking block corresponding to the first locking groove and the second locking groove, respectively.

[0018] Furthermore, the base has a vertically extending groove, and the movable seat includes a sliding plate passing through the groove, with the clamping assembly installed at the upper end of the sliding plate.

[0019] Furthermore, springs are provided on both sides of the sliding plate, and the springs are arranged along the moving direction of the sliding plate, with their two ends connected to the sliding plate and the base, respectively. The springs allow the moving seat to apply flexible force to the fabric during its movement.

[0020] Furthermore, the base includes a first plate arranged horizontally, with support frames at both ends of the first plate. The lower end of the support frame is lower than the lower end of the first plate, so that the first plate is suspended, achieving a shock absorption effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the fabric tensile testing device according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the clamping mechanism according to an embodiment of the present utility model;

[0023] Figure 3 This is an exploded view of the winding cylinder and pressure block according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the locking component in an embodiment of the present utility model;

[0025] Figure 5 This is a top view of the fabric tensile testing device according to an embodiment of the present invention.

[0026] In the picture:

[0027] 1-Base; 11-First plate; 111-Slide groove; 12-Support frame;

[0028] 2-Tensioning mechanism; 21-Fixed seat; 22-Moving seat; 23-Spring;

[0029] 3-Clamping mechanism; 31-Clamping frame; 311-Second locking groove; 32-Wrapping shaft; 321-Mandrel; 3211-First locking groove; 322-Wrapping cylinder; 3221-Pressure groove; 33-Pressure block; 331-Notch; 34-Locking component; 341-Locking base plate; 342-First locking block; 343-Second locking block. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Example

[0031] See appendix Figure 1-3As shown, this utility model discloses a fabric tensile testing device, comprising a base 1, a tensile mechanism 2, and a clamping mechanism 3. The tensile mechanism 2 is located on the base 1 and includes a fixed seat 21, a movable seat 22, and a driving component (not shown). The driving component drives the movable seat 22 to move towards or away from the fixed seat 21. The clamping mechanism 3 includes two clamping assemblies respectively disposed on the fixed seat 21 and the movable seat 22. Each clamping assembly includes a clamping frame 31, a winding shaft 32, a pressure block 33, and a locking component 34. The winding shaft 32 is rotatably mounted on the clamping frame 31; the pressure block 33 is located on the winding shaft 32 and is used to press the fabric onto the winding shaft 32; the locking component 34 is used to lock the winding shaft 32 onto the clamping frame 31 to inhibit the rotation of the winding shaft 32.

[0032] In use, first, place one end of the fabric against the winding shaft 32 of the fixed base 21, and use the pressure block 33 to press the fabric firmly onto the winding shaft 32; rotate the winding shaft 32 so that the fabric winds around the winding shaft 32 at least 1 to 2 times; lock the winding shaft 32 onto the clamping frame 31 using the locking member 34. At this time, one end of the fabric is fixed to the winding shaft 32 of the fixed base 21; then fix the other end of the fabric to the winding shaft 32 of the moving base 22 in the same way; start the drive, and the moving base 22 moves away from the fixed base 21 to stretch the fabric. Because the locking member 34 can inhibit the rotation of the winding shaft 32, and the pressure block 33 is pressed against the end of the fabric due to the winding and covering of the fabric, the fabric wound on the winding shaft 32 will not slip off during the tensile test.

[0033] In this embodiment, the clamping mechanism 3 is used to clamp both ends of the fabric, and the stretching mechanism 2 is used to apply tensile force to the fabric to facilitate the measurement of the fabric's tensile strength. During measurement, an external tension sensor can be connected to the clamping assembly on the fixing base 21. The measurement principle of the tension sensor and the quantification of tensile strength are existing technologies and will not be described in detail in this embodiment. The clamping principle of the clamping mechanism 3 will be described in detail below.

[0034] In some embodiments, see Appendix Figure 3 As shown, the winding shaft 32 includes a mandrel 321 and a winding cylinder 322 fixedly mounted on the mandrel 321. The surface of the winding cylinder 322 is provided with a pressure groove 3221 for the pressure block 33 to be inserted.

[0035] In use, first, the end of the fabric is placed into the pressure groove 3221, and then the pressure block 33 is embedded into the pressure groove 3221. The pressure block 33 and the pressure groove 3221 clamp the end of the fabric. Then, the rotation of the winding shaft 32 drives the fabric to wind around the winding shaft 32. Winding 1 to 2 turns allows the fabric to cover the pressure block 33. Then, the locking member 34 locks the winding shaft 32 onto the clamping frame 31. When the other end of the fabric is pulled by an external force, the winding shaft 32 will not rotate due to the locking effect of the locking member 34. At the same time, the fabric covering the pressure block 33 can be further pressed onto the pressure block 33 under the pulling action, thereby preventing the pressure block 33 from detaching from the winding shaft 32 and preventing the end of the fabric from slipping out of the pressure groove 3221. Furthermore, the cooperation between the pressure groove 3221 and the pressure block 33 results in a zigzag-shaped pressing effect on the surface of the winding shaft 32, which is better than the planar pressing method.

[0036] Furthermore, an elastic sealing layer is provided on the side wall of the pressure block 33 facing the pressure groove 3221. For example, the elastic sealing layer may be made of rubber. The provision of the elastic sealing layer can improve the tightness of the fitting between the pressure block 33 and the pressure groove 3221, thereby improving the pressing effect on the end of the fabric.

[0037] Furthermore, when the pressure block 33 is embedded in the pressure groove 3221, the surface formed by the outer wall of the pressure block 33 does not protrude beyond the arc surface formed by the outer wall of the winding cylinder 322. That is, the distance from the outer wall of the pressure block 33 to the axis of the winding cylinder 322 is not greater than the radius of the arc surface of the outer wall of the winding cylinder 322. This arrangement allows the pressure block 33 to be completely embedded in the pressure groove 3221, thereby preventing bulging during the fabric winding process.

[0038] To facilitate the removal of the pressure block 33 from the pressure groove 3221, in some embodiments, one end of the pressure groove 3221 is designated as the fabric inlet end, through which the fabric enters the pressure groove 3221. A notch 331 is provided at the end of the pressure block 33 furthest from the fabric inlet end. Positioning the notch 331 at the end furthest from the fabric inlet end prevents the pressure block 33 from pressing the fabric at the fabric inlet end. Furthermore, after the test, the notch 331 is used to separate the pressure block 33 from the pressure groove 3221.

[0039] In some embodiments, see Appendix Figure 2 As shown, a first locking groove 3211 is provided at one end of the mandrel 321, and correspondingly, a second locking groove 311 is provided on the clamping frame 31. During the rotation of the winding shaft 32, the locking member 34 can be simultaneously inserted into the first locking groove 3211 and the second locking groove 311.

[0040] For details, please see the appendix. Figure 4As shown, the locking member 34 includes a locking base plate 341. The two ends of the locking base plate 341 are bent to form a first locking block 342 and a second locking block 343 corresponding to the first locking groove 3211 and the second locking groove 311, respectively. The first locking block 342, the second locking block 343, and the locking base plate 341 together form a U-shaped structure. It should be noted that since the distance between the first locking block 342 and the second locking block 343 is fixed, the first locking block 342 and the second locking block 343 can only be simultaneously inserted into the first locking groove 3211 and the second locking groove 311 when the mandrel 321 rotates to a specified angle. This ensures that the mandrel 321 can rotate to the set position after winding the fabric during the winding process.

[0041] In some embodiments, see Appendix Figure 1 As shown, the base 1 includes a first plate 11 arranged horizontally. A tensioning mechanism 2 and a clamping mechanism 3 are both mounted on the first plate 11. Support frames 12 are provided at both ends of the first plate 11, with the lower end face of the support frame 12 lower than the lower end face of the first plate 11. This allows the first plate 11 to be suspended, achieving a shock absorption effect.

[0042] The first plate 11 has a vertically extending groove 111, and the movable seat 22 includes a sliding plate that passes through the groove 111, with a clamping assembly installed at the upper end of the sliding plate.

[0043] Furthermore, see Appendix Figure 5 As shown, springs 23 are provided on both sides of the sliding plate. The springs 23 are arranged along the moving direction of the sliding plate, and their two ends are connected to the sliding plate and the support frame 12 respectively.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A fabric tensile testing apparatus, characterized by: Including the base; A tensioning mechanism, located on the base, includes a fixed seat, a movable seat, and a driving member, wherein the driving member is used to drive the movable seat to move toward or away from the fixed seat; The clamping mechanism includes two clamping assemblies respectively disposed on the fixed base and the movable base. Each clamping assembly includes a clamping frame, a winding shaft, a pressure block, and a locking member. The winding shaft is rotatably disposed on the clamping frame. The pressure block is located on the winding shaft and is used to press the fabric onto the winding shaft. The locking member is used to lock the winding shaft on the clamping frame to inhibit the rotation of the winding shaft. The winding shaft includes a mandrel and a winding cylinder fitted on the mandrel. The surface of the winding cylinder has a pressure groove for the pressure block to be inserted. One end of the mandrel is provided with a first locking groove, and the clamping frame is provided with a second locking groove; during the rotation of the winding shaft, the locking member can be simultaneously inserted into the first locking groove and the second locking groove; The locking component includes a locking base plate, and the two ends of the locking base plate are bent to form a first locking block and a second locking block corresponding to the first locking groove and the second locking groove, respectively. When the pressure block is embedded in the pressure groove, the surface formed by the outer wall of the pressure block does not protrude from the arc surface formed by the outer wall of the winding cylinder.

2. The fabric tensile testing device of claim 1, wherein: The pressure block has an elastic sealing layer on its side wall facing the pressure groove.

3. The fabric stretch test apparatus of claim 2, wherein: One end of the pressure groove is the fabric inlet end, and the end of the pressure block away from the fabric inlet end has a notch.

4. The fabric tensile testing device according to claim 1, characterized in that: The base has a vertically extending groove, and the movable seat includes a sliding plate that passes through the groove. The clamping assembly is installed at the upper end of the sliding plate.

5. The fabric stretch test device of claim 4, wherein: Springs are provided on both sides of the sliding plate, and the springs are arranged along the moving direction of the sliding plate, with their two ends connected to the sliding plate and the base respectively.

6. The fabric stretch test device of claim 1, wherein: The base includes a first plate arranged in a horizontal direction, and support frames are provided at both ends of the first plate. The lower end surface of the support frame is lower than the lower end surface of the first plate.

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