Fabric surface friction performance tester

Abstract

The utility model relates to the field of fabric performance detection, in particular to a fabric surface friction performance tester. A fabric surface friction performance tester comprises a rack, a sample clamping movement assembly, a friction head assembly and a sensor assembly, the rack comprises a clamping movement assembly used for mounting a sample, a friction head assembly and a sensor assembly; the sample clamping movement assembly is used for fixing a to-be-tested sample and driving the to-be-tested sample to move; the friction head assembly is used for fixing a sample abrasive handle to press a sample to be tested; the sensor assembly comprises a height-adjustable force value sensor and a connecting rope connecting the force value sensor and the friction plate. The force value sensor and the friction plate are connected through the connecting rope, the direction of the connecting rope can be freely adjusted on the rack, and meanwhile, the height of the force value sensor can be adjusted, so that the traction direction of the connecting rope can be parallel to the relative movement direction of the sample to be detected and the friction head, and the surface friction performance of the fabric can be more accurately detected.

Description

Technical Field

[0001] The present application relates to the field of fabric performance testing, and particularly to a fabric surface friction performance tester. Background Art

[0002] A fabric surface friction performance tester is a precision device used to quantitatively evaluate the friction characteristics when a fabric contacts other materials. By simulating the contact friction between the fabric and different materials (such as metal, skin, other fabrics), the tester can accurately measure the dynamic friction coefficient and static friction coefficient. These parameters directly reflect the smoothness, roughness, and surface uniformity of the fabric, and are key indicators for evaluating the tactile style of the fabric (such as silky, soft and waxy).

[0003] Regarding the above related technologies, the applicant believes that there are the following defects: The existing friction performance test connects the friction head and the sensor through a connecting rope. When the test sample to be detected and the friction head start to move relative to each other from a static state, the sensor can detect the maximum static friction force and sliding friction force during this process, and calculate the dynamic friction coefficient and static friction coefficient. However, the traction direction of the connecting rope may not be completely parallel to the relative movement direction of the test sample to be detected and the friction head, resulting in a deviation between the finally obtained dynamic and static friction coefficients and the actual situation. Utility Model Content

[0004] In order to more accurately detect the fabric surface friction performance, the present application provides a fabric surface friction performance tester.

[0005] A fabric surface friction performance tester provided by the present application adopts the following technical solutions:

[0006] A fabric surface friction performance tester includes a frame, a sample clamping and moving assembly, a friction head assembly, and a sensor assembly;

[0007] The frame includes a part for installing the sample clamping and moving assembly, the friction head assembly, and the sensor assembly;

[0008] The sample clamping and moving assembly is used to fix the sample to be tested and drive it to move;

[0009] The friction head assembly is used to fix the sample abrasive handle and press it against the sample to be tested;

[0010] The sensor assembly includes a force value sensor with adjustable height and a connecting rope connecting the force value sensor and the friction plate.

[0011] By adopting the above technical solution, the force value sensor and the friction plate are connected by a connecting rope, and the direction of the connecting rope can be freely adjusted on the frame. At the same time, the height of the force value sensor is adjustable, so that the traction direction of the connecting rope can be consistent with the relative movement direction of the test sample to be detected and the friction head, so as to more accurately detect the friction performance of the fabric surface.

[0012] Preferably, the sensor assembly further includes a sensor seat, and a cover shell covering the sensor seat and the force value sensor inside. There are at least two guide columns parallel to the axis and passing through the sensor seat on the frame. An adjusting rod is threadedly connected to the sensor seat. The upper end of the adjusting rod passes through the upper limit plate and the cover shell, and an adjusting knob is fixedly connected to the end of the adjusting rod passing through the cover shell. The adjusting knob abuts against the upper end surface of the cover shell.

[0013] By adopting the above technical solution, by rotating the adjusting knob to drive the adjusting rod to rotate, during the process of driving the adjusting rod to rotate, since the position of the adjusting knob abutted against the cover shell does not change, the sensor seat will rise / fall to drive the height of the force value sensor to be adjusted.

[0014] Preferably, an indicating hole is formed on the side surface of the cover shell, a scale is arranged on one side of the indicating hole, and an indicating needle passing through the indicating hole is fixed on one side of the sensor seat.

[0015] By adopting the above technical solution, an indicating hole is arranged on the side surface of the cover shell to cooperate with the indicating needle to indicate the height of the force value sensor, and the height of the force value sensor can be quickly adjusted according to the thickness of the fabric.

[0016] Preferably, an avoidance hole for avoiding the connecting rope is formed on the side of the cover shell facing the friction head assembly.

[0017] By adopting the above technical solution, the avoidance hole is provided to pass the connecting rope through.

[0018] Preferably, the friction head assembly includes a friction plate, abrasive pressing plates located on both sides above the friction plate, and a counterweight weight located in the middle above the abrasive pressing plates. Studs are provided on the friction plate and pass through both ends of the abrasive pressing plates, and hand-tightening nuts are threadedly connected to the studs.

[0019] By adopting the above technical solution, when installing the sample abrasive, the sample abrasive covers the entire lower surface of the friction plate, and then the two ends of the sample abrasive are threaded upward into the position between the friction plate and the abrasive pressing plate, and then tightened by the hand-tightening nut to fix the sample abrasive.

[0020] Preferably, the frame includes a panel. The specimen clamping and moving assembly includes a stepping motor installed on the lower surface of the panel, a synchronous belt driven by the stepping motor, and a moving platform connected to the synchronous belt. A guiding groove is formed on the panel, and a slide rail parallel to the guiding groove is provided below the panel. A moving frame is fixedly connected to the slider of the slide rail, and a tooth shape meshing with the synchronous belt is formed on one side of the moving frame. The moving platform includes a moving plate and a connecting plate located on the lower surface of the moving plate, passing through the guiding groove and connected to the moving frame.

[0021] By adopting the above technical solution, the stepping motor drives the synchronous belt to move, so that the moving frame moves together with the synchronous belt, and finally the movement of the entire moving platform is controlled.

[0022] Preferably, the number of the guiding grooves and the slide rails is two. The two slide rails are located on the opposite sides of the two guiding grooves, and two connecting plates are provided and are respectively located on the left and right sides of the lower surface of the moving plate.

[0023] By adopting the above technical solution, two slide rails and guiding grooves are provided, so that the moving plate has two mating connection points, making the operation more stable and preventing angular deflection due to unilateral force.

[0024] Preferably, a U-shaped pressing frame is installed on the side of the moving plate away from the sensor assembly. A pressing plate is provided between the pressing frame and the moving plate. A guiding rod is respectively penetrated through the positions near both sides of the upper surface of the pressing frame. The lower end of the guiding rod is inserted into the pressing plate and fixedly connected to the pressing plate. A guiding spring is sleeved on the guiding rod. A pressing knob is threadedly connected to the middle of the pressing frame, and the lower end of the pressing knob abuts against the upper surface of the pressing plate.

[0025] By adopting the above technical solution, after lifting the pressing plate upward, the fabric to be detected is placed on the moving plate, and one end of the fabric to be detected is placed below the pressing plate, so that the fabric to be detected is preliminarily fixed under the action of the guiding spring. At this time, the fabric to be detected can be adjusted to be flat without obvious wrinkles. Then, the pressing knob is tightened so that the fabric to be detected is completely clamped and fixed by the pressing plate.

[0026] Preferably, a positioning rod is penetrated and fixed on the side surface of the pressing plate. A positioning member is fixedly installed at one end of the positioning rod facing the sensor assembly. A positioning groove is formed on the side of the positioning member facing the sensor assembly.

[0027] By adopting the above technical solution, by setting the positioning groove on the positioning member to cooperate with adjusting the position of the friction head assembly, it is easier to adjust the traction direction of the connecting rope to be consistent with the relative movement direction of the specimen to be detected and the friction head.

[0028] Preferably, a first cylinder is rotatably connected to the middle of the side of the positioning member facing away from the sensor assembly. A second cylinder with an axis perpendicular to the first cylinder is formed in the middle of the first cylinder. A main through hole with a diameter larger than that of the first cylinder is formed in the middle of the pressing plate, and side through holes for passing the second cylinder are formed on both sides of the main through hole. The first cylinder passes through the main through hole and exits from the side of the pressing plate facing away from the sensor assembly. A vertical limiting groove is formed on the side of the pressing plate facing away from the sensor assembly.

[0029] By adopting the above technical solution, the second cylinder can be made to pass through the side through hole by pulling the first cylinder, and the second cylinder can be rotated to be stuck in the limiting groove, so that the position of the positioning member will not rebound.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The force value sensor and the friction plate are connected by a connecting rope, and the direction of the connecting rope can be freely adjusted on the frame. At the same time, the height of the force value sensor is adjustable, so that the traction direction of the connecting rope can be consistent with the relative movement direction of the test sample to be detected and the friction head, so as to more accurately detect the friction performance of the fabric surface.

[0032] 2. An indicating hole is provided on the side of the housing to cooperate with the indicating needle to indicate the height of the force value sensor, and the height of the force value sensor can be quickly adjusted according to the thickness of the fabric.

[0033] 3. By providing a positioning groove on the positioning member to cooperate with adjusting the position of the friction head assembly, it is easier to adjust the traction direction of the connecting rope to be consistent with the relative movement direction of the test sample to be detected and the friction head. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of the embodiment;

[0035] Figure 2 is a schematic structural diagram of the sample clamping and moving assembly in the embodiment;

[0036] Figure 3 is a schematic structural diagram of the moving platform in the embodiment;

[0037] Figure 4 is an exploded schematic diagram of the clamping frame part in the embodiment;

[0038] Figure 5 is a schematic structural diagram of the friction head assembly in the embodiment;

[0039] Figure 6 is an exploded schematic diagram of the sensor assembly in the embodiment.

[0040] Description of reference numerals: 1, frame; 2, sample clamping motion assembly; 3, friction head assembly; 4, sensor assembly; 5, stepping motor; 6, synchronous belt; 7, moving platform; 8, panel; 9, guide groove; 10, slide rail; 11, moving frame; 12, moving plate; 13, connecting plate; 14, clamping frame; 15, clamping plate; 16, guide rod; 17, guide spring; 18, clamping knob; 19, positioning rod; 20, positioning member; 21. Positioning slot; 22. First column; 23. Second column; 24. Main through hole; 25. Side through hole; 26. Limiting slot; 27. Friction plate; 28. Abrasive pressure plate; 29. Counterweight; 30. Sensor seat; 31. Force sensor; 32. Connecting rope; 33. Cover; 34. Avoidance hole; 35. Guide column; 36. Upper limit plate; 37. Adjusting rod; 38. Adjusting knob; 39. Indicator hole; 40. Indicator needle. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-6 This application is described in further detail.

[0042] The embodiments of the present application disclose a fabric surface friction performance tester. The “upper”, “lower”, “left” and “right” used in the embodiments are all schematic diagrams for describing the relative directions of positional relationships, and are not limitations of the positional relationships.

[0043] like Figure 1 As shown, the fabric surface friction performance tester includes a frame 1, a sample clamping motion assembly 2 located on the frame 1, a friction head assembly 3 for applying friction force to the sample by pressing relative to the sample, and a sensor assembly 4 for detecting the magnitude of the friction force.

[0044] like Figure 2 and Figure 3 As shown, the sample clamping motion assembly 2 includes a stepper motor 5 installed in a frame 1, a synchronous belt 6 driven by the stepper motor 5, and a moving platform 7 connected to the synchronous belt 6. The frame 1 includes a panel 8, the stepper motor 5 is installed on the lower surface of the panel 8, two parallel guide grooves 9 are formed on the panel 8, and a slide rail 10 is installed on each side of the two guide grooves 9 opposite to each other below the panel 8. The sliders slidably connected on the two slide rails 10 are connected through a moving frame 11, and a tooth shape meshing with the synchronous belt 6 is formed on one side of the moving frame 11. The moving platform 7 is fixedly connected to the moving frame 11, so that the moving platform 7 moves with the synchronous belt 6.

[0045] like Figure 3 and Figure 4As shown in the figure, the mobile platform 7 includes a mobile plate 12 and two connecting plates 13 located on both sides of the lower surface of the mobile plate 12. The connecting plates 13 pass through the guiding grooves 9 and are connected to the mobile frame 11. On one side of the mobile plate 12 away from the sensor assembly 4, a U-shaped pressing frame 14 is installed. A pressing plate 15 is arranged between the pressing frame 14 and the mobile plate 12. At positions near both sides of the upper surface of the pressing frame 14, a guiding rod 16 is inserted through each. The lower end of the guiding rod 16 is inserted into the pressing plate 15 and fixedly connected to the pressing plate 15. A guiding spring 17 is sleeved on the guiding rod 16. A pressing knob 18 is threadedly connected to the middle of the pressing frame 14, and the lower end of the pressing knob 18 abuts against the upper surface of the pressing plate 15. A positioning rod 19 is inserted and fixed on the side surface of the pressing plate 15. A positioning member 20 is fixedly installed at one end of the positioning rod 19 facing the sensor assembly 4. A positioning groove 21 is formed on one side of the positioning member 20 facing the sensor assembly 4. A first cylinder 22 is rotatably connected to the middle of the side of the positioning member 20 facing away from the sensor assembly 4. A second cylinder 23 with an axis perpendicular to the first cylinder 22 is formed in the middle of the first cylinder 22. A main through hole 24 with a diameter larger than that of the first cylinder 22 and side through holes 25 for passing the second cylinder 23 are formed in the middle of the pressing plate 15. The first cylinder 22 passes through the main through hole 24 and passes out from the side of the pressing plate 15 facing away from the sensor assembly 4. A vertical limiting groove 26 is formed on the side of the pressing plate 15 facing away from the sensor assembly 4.

[0046] As Figure 5 shown in the figure, the friction head assembly 3 includes a friction plate 27, abrasive pressing plates 28 located at both sides above the friction plate 27, and a counterweight 29 located in the middle above the abrasive pressing plates 28. The studs on the friction plate 27 pass through both ends of the abrasive pressing plates 28 and the abrasive pressing plates 28 are pressed by hand-tightening nuts. When installing the sample abrasive, the sample abrasive covers the entire lower surface of the friction plate 27, and then the two ends of the sample abrasive are upwardly inserted into the position between the friction plate 27 and the abrasive pressing plates 28, and then tightened by hand-tightening nuts so that the sample abrasive is fixed.

[0047] As Figure 6As shown, the sensor assembly 4 includes a sensor base 30, a force value sensor 31 fixed above the sensor base 30, a connecting rope 32 connecting the force value sensor 31 and the friction plate 27, and a housing 33 that covers both the sensor base 30 and the force value sensor 31. An avoidance hole 34 for avoiding the connecting rope 32 is formed on one side of the housing 33 facing the friction head assembly 3. Two vertical guide columns 35 are fixed on the frame 1, and an upper limit plate 36 is installed at the upper end of the guide columns 35. The two guide columns 35 pass through the sensor base 30 so that the sensor base 30 can only move in the vertical direction. An adjusting rod 37 is threadedly connected to the sensor base 30. The upper end of the adjusting rod 37 passes through the upper limit plate 36 and the housing 33, and an adjusting knob 38 is fixedly connected to the end of the adjusting rod 37 that passes through the housing 33. The adjusting knob 38 abuts against the upper end surface of the housing 33. An indicating hole 39 is formed on the side of the housing 33, a scale is provided on one side of the indicating hole 39, and an indicating needle 40 that passes through the indicating hole 39 is fixed on one side of the sensor base 30.

[0048] Specific usage process:

[0049] Fix the test abrasive on the friction plate 27, place the fabric to be tested on the moving plate 12, and tighten the pressing knob 18 so that the fabric to be tested is clamped and fixed by the pressing plate 15. Place the friction head assembly 3 on the fabric to be tested, then start the stepping motor 5 so that the moving platform 7 moves uniformly away from the sensor assembly 4, record the force value detected by the force value sensor 31 during the process, and calculate the dynamic friction coefficient and static friction coefficient based on the maximum static friction force and sliding friction force detected during this process.

[0050] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A fabric surface friction performance tester, characterized in that It comprises a frame (1), a sample clamping motion assembly (2), a friction head assembly (3) and a sensor assembly (4); The frame (1) includes a frame for mounting a sample clamping motion assembly (2), a friction head assembly (3) and a sensor assembly (4); The sample clamping and moving assembly (2) is used to fix the sample to be tested and drive it to move; The friction head assembly (3) is used to fix the sample abrasive handle to press the sample to be tested; The sensor assembly (4) comprises a height-adjustable force sensor (31) and a connecting rope (32) connecting the force sensor (31) and the friction plate (27).

2. The fabric surface friction property tester according to claim 1, characterized in that, The sensor assembly (4) further comprises a sensor seat (30), a cover shell (33) in which the sensor seat (30) and the force sensor (31) are all covered, the frame (1) is provided with at least two guide posts (35) whose axes are parallel and pass through the sensor seat (30), an adjustment rod (37) is threadedly connected to the sensor seat (30), the upper end of the adjustment rod (37) passes through the upper limit plate (36) and the cover shell (33), and an adjustment knob (38) is fixedly connected to the end of the adjustment rod (37) passing through the cover shell (33), and the adjustment knob (38) abuts against the upper end surface of the cover shell (33).

3. The fabric surface friction performance tester according to claim 2, characterized in that, An indication hole (39) is formed on the side of the cover shell (33), a scale is provided on one side of the indication hole (39), and an indication needle (40) passing through the indication hole (39) is fixed on one side of the sensor seat (30).

4. The fabric surface friction property tester according to claim 2, characterized in that, The cover shell (33) is formed with an escape hole (34) on the side facing the friction head assembly (3) for escaping the connecting rope (32).

5. The fabric surface friction property tester according to claim 1, characterized in that, The friction head assembly (3) comprises a friction plate (27), an abrasive pressure plate (28) located at both sides above the friction plate (27), and a counterweight (29) located in the middle above the abrasive pressure plate (28); the friction plate (27) is provided with a stud passing through both ends of the abrasive pressure plate (28), and a hand-tightened nut is threadedly connected to the stud.

6. The fabric surface friction property tester according to claim 1, characterized in that, The frame (1) comprises a panel (8), the sample clamping motion assembly (2) comprises a stepping motor (5) mounted on the lower surface of the panel (8), a synchronous belt (6) driven by the stepping motor (5), and a moving platform (7) connected to the synchronous belt (6); a guide groove (9) is formed on the panel (8), a slide rail (10) parallel to the guide groove (9) is provided below the panel (8), a moving frame (11) is fixedly connected to a slider of the slide rail (10), a tooth shape meshing with the synchronous belt (6) is formed on one side of the moving frame (11), and the moving platform (7) comprises a moving plate (12), and a connecting plate (13) located on the lower surface of the moving plate (12) and connected to the moving frame (11) through the guide groove (9).

7. The fabric surface friction property tester according to claim 6, characterized in that, The number of the guide grooves (9) and the slide rails (10) is two, the two slide rails (10) are located on the opposite sides of the two guide grooves (9), and the number of the connecting plates (13) is two and they are located on the left and right sides of the lower surface of the moving plate (12), respectively.

8. The fabric surface friction property tester according to claim 6, characterized in that, A U-shaped pressing frame (14) is installed on a side of the moving plate (12) far from the sensor assembly (4). A pressing plate (15) is arranged between the pressing frame (14) and the moving plate (12). A guide rod (16) is penetrated through each of the positions near both sides on the upper surface of the pressing frame (14). The lower end of the guide rod (16) is inserted into the pressing plate (15) and fixedly connected with the pressing plate (15). A guide spring (17) is sleeved on the guide rod (16). A pressing knob (18) is threadedly connected to the middle of the pressing frame (14), and the lower end of the pressing knob (18) abuts against the upper surface of the pressing plate (15).

9. The fabric surface friction property tester according to claim 8, characterized in that, A positioning rod (19) is penetrated and fixed on the side surface of the pressing plate (15). A positioning member (20) is fixedly installed at one end of the positioning rod (19) facing the sensor assembly (4). A positioning groove (21) is formed on one side of the positioning member (20) facing the sensor assembly (4).

10. The fabric surface friction performance tester according to claim 9, characterized in that, A first cylinder (22) is rotatably connected to the middle of the side of the positioning member (20) facing away from the sensor assembly (4). A second cylinder (23) with an axis perpendicular to the first cylinder (22) is formed in the middle of the first cylinder (22). A main through hole (24) with a diameter larger than the diameter of the first cylinder (22) is formed in the middle of the pressing plate (15), and side through holes (25) for passing the second cylinder (23) are formed on both sides of the main through hole (24). The first cylinder (22) passes through the main through hole (24) and passes out from the side of the pressing plate (15) facing away from the sensor assembly (4). A vertical limiting groove (26) is formed on the side of the pressing plate (15) facing away from the sensor assembly (4).

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