Online friction coefficient testing device and friction coefficient testing system

Abstract

The utility model belongs to the technical field of thin film materials. The utility model discloses an online friction coefficient testing device which is used for testing the friction coefficient of a film in production in real time and comprises a support, a testing sliding block and a sensing module. The support is close to the film. The test slide block is attached to the film surface of the film and moves relative to the film when the film is conveyed; one end of the sensing module is connected to the support, the other end of the sensing module is connected to the testing sliding block, and the sensing module is used for testing the force borne by the testing sliding block. The utility model further discloses a friction coefficient testing system. According to the online friction coefficient testing device, the friction coefficient of the film can be tested in real time, normal operation of a film preparation process is guaranteed, and subsequent detection on film performance is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of thin film materials, and in particular relates to an online friction coefficient testing device and a friction coefficient testing system. Background Art

[0002] The surface friction coefficient of the film is an important parameter of the film. When using the film for packaging, the film needs to have a certain friction coefficient so that the packaged objects can enter the film smoothly and quickly to prevent accumulation or blocking. When the film is used for stamping, the film material coefficient on the surface of the film needs to be small to improve the stamping performance of the film.

[0003] In the related art, the friction coefficient of the film surface is usually measured by sampling the film and testing the friction coefficient of the sample after sampling.

[0004] However, in the process of implementing the technical solution of the embodiment of the present application, the applicant found that the above technology has at least the following technical problems:

[0005] The friction coefficient of the sample after testing cannot ensure that the friction coefficient of the entire roll sample is normal. The sampling test method cannot know whether the friction coefficient of the film in production is normal, and the film preparation process cannot be adjusted in time. Utility Model Content

[0006] The embodiment of the present application provides an online friction coefficient testing device, which can test the friction coefficient of the film in real time, ensure the normal operation of the film preparation process, and reduce subsequent testing of the film performance.

[0007] The embodiment of the present application provides an online friction coefficient test device, which is used to test the friction coefficient of a film in production in real time, and includes a bracket, a test slider, and a sensor module. The bracket is arranged close to the film; the test slider is attached to the film surface of the film and generates relative motion with the film when the film is transported; one end of the sensor module is connected to the bracket, and the other end of the sensor module is connected to the test slider, and the sensor module is used to test the force applied to the test slider.

[0008] Further, the test slider includes a slider body, and the slider body is connected to the sensor module.

[0009] Furthermore, the test slider includes a slider body and a fixture arranged on the slider body; the slider body is connected to the sensor module.

[0010] Furthermore, a groove is provided on the slider body; the clamp includes a rectangular clamp block, a trapezoidal clamp block, a convex clamp block or an irregular clamp block, and the clamp is inserted into the groove.

[0011] Furthermore, the plane where the film is located is defined as a preset plane, the direction of film transportation is defined as a first straight line, and a second straight line parallel to the preset plane and perpendicular to the first straight line is defined; the online friction coefficient testing device also includes a driving module for driving the sensor module or the bracket to move along the second straight line direction, and the driving module is connected to the bracket or the sensor module.

[0012] Furthermore, the sensing module is a tension sensing module or a pressure sensing module.

[0013] Furthermore, the online friction coefficient testing device also includes a data processing module; the data processing module is connected to the sensor module, and the data processing module is used to process the data measured by the sensor module.

[0014] An embodiment of the present application provides a friction coefficient testing system, which is used to test the friction coefficient of a film in production in real time; the friction coefficient testing system includes at least one of the above-mentioned online friction coefficient testing devices and a first guide roller group; the first guide roller group keeps the film in a taut state; the online friction coefficient testing device is arranged on the film surface of the film, and the test slider is attached to the film surface of the film.

[0015] Furthermore, the two opposite film surfaces of the film are defined as the first surface and the second surface respectively; the first guide roller group transports the film with the first surface or the second surface facing upward; when the first guide roller group transports the film with the first surface facing upward, the test slider is arranged on the first surface; when the first guide roller group transports the film with the second surface facing upward, the test slider is arranged on the second surface.

[0016] Furthermore, the friction coefficient testing system also includes a second guide roller group, which keeps the film in a taut state; the two opposite film surfaces of the film are defined as the first surface and the second surface respectively; the first guide roller group transports the film with the first surface facing upward, and the test slider is arranged on the first surface; the second guide roller group transports the film with the second surface facing upward, and the test slider is arranged on the second surface.

[0017] The online friction coefficient testing device in the present application can be applied to films in production, can test the friction coefficient of the film in real time during the film production process, and can test whether the friction coefficient of the entire film is within the standard range, thereby improving the timeliness and accuracy of the friction coefficient test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an online friction coefficient testing device in the first embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of a test slider in the first embodiment of the present application;

[0020] Figure 3This is a schematic diagram of the cross-sectional structure of a test slider in the second embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of a test slider in the third embodiment of the present application;

[0022] Figure 5 This is an exploded schematic diagram of a test slider in one embodiment of the present application;

[0023] Figure 6 This is a structural schematic diagram of an online friction coefficient testing device in the second embodiment of the present application;

[0024] Figure 7 This is a schematic structural diagram of an online friction coefficient testing device in a third embodiment of the present application;

[0025] Figure 8 This is a structural schematic diagram of a friction coefficient testing system in one embodiment of the present application;

[0026] Fig. 9 This is a schematic cross-sectional structure diagram of a friction coefficient testing system in the first embodiment of the present application;

[0027] Fig.10 This is a schematic cross-sectional structure diagram of a friction coefficient testing system in a second embodiment of the present application;

[0028] Fig.11 This is a schematic cross-sectional structure diagram of a friction coefficient testing system in the third embodiment of the present application.

[0029] In the figure: an online friction coefficient testing device 100, a bracket 11, a test slider 12, a slider body 121, a groove 1211, a fixture 122, a sensor module 13, a drive module 14, and a data processing module 15; a film 200, a first surface 21, and a second surface 22; a test sample 300; a friction coefficient testing system 400, a first guide roller group 41, a first guide roller 411, a second guide roller 412, a second guide roller group 42, a third guide roller 421, and a fourth guide roller 422; a preset plane 101, a first straight line 102, a second straight line 103, and a third straight line 104. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0031] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0032] The present application embodiment provides a Figure 1 The online friction coefficient testing device 100 shown is used to test the friction coefficient of the film 200 in production in real time. Specifically, the online friction coefficient testing device 100 includes a bracket 11, a test slider 12 and a sensor module 13. The bracket 11 is arranged close to the film 200 in production, and is used to support and fix other components in the online friction coefficient testing device 100. The test slider 12 is attached to the film surface of the film 200 and generates relative movement with the film 200 when the film 200 is transported. One end of the sensor module 13 is connected to the bracket 11, and the other end is connected to the test slider 12. The sensor module 13 can detect the force exerted on the test slider 12 when it moves relative to the film 200. The online friction coefficient testing device 100 is arranged in the production line of the film 200, and can test the friction coefficient of the film 200 in production in real time, and can check the friction coefficient of the entire film 200, thereby improving the accuracy of friction coefficient detection. The online friction coefficient testing device 100 can detect in real time whether the friction coefficient of the film 200 is within the standard range, thereby improving the timeliness of the friction coefficient detection.

[0033] As an optional implementation, Figure 1 As shown, the plane where the film 200 is located is defined as the preset plane 101, the direction of the film 200 transportation is defined as the first straight line 102, a second straight line 103 parallel to the preset plane 101 and perpendicular to the first straight line 102 is defined, and a third straight line 104 perpendicular to the preset plane 101 is defined. During production, the film 200 and the test slider 12 generate relative motion. By detecting the force applied to the test slider 12, and according to the gravity of the slider and the angle of the force, the friction force F applied to the test slider 12 in the direction of the first straight line 102 can be calculated. f and the support force F of the test slide 12 in the direction of the third straight line 104 N , and then according to the friction coefficient formula μ d =F f / F N The friction coefficient between the film 200 and the test slider 12 can be calculated.

[0034] As an optional embodiment, the online friction coefficient test device 100 is arranged in the production line of the film 200 and is arranged at a position where the film surface of the film 200 is parallel to the horizontal plane. The online friction coefficient test device 100 is arranged at a position where the film surface of the film 200 is parallel to the horizontal plane, which is more convenient for the subsequent calculation of the friction coefficient. When the film surface of the film 200 is parallel to the horizontal plane, the gravity on the test slider 12 and the support force F on the test slider 12 in the direction of the third straight line 104 are equal. N The three straight lines 104 are collinear, and there is no need to calculate the angle between gravity and the third straight line 104 during calculation, so the calculation is more convenient and the error is smaller.

[0035] As an optional implementation, the sensor module 13 detects the force exerted on the test slider 12 in the direction of the first straight line 102. The sensor module 13 can detect the force exerted on the test slider 12 in any direction, but detecting the force exerted on the test slider 12 in the direction of the first straight line 102 is more convenient for subsequent calculation of the friction coefficient. The sensor module 13 detects the force exerted on the test slider 12 in the direction of the first straight line 102. At this time, the force detected by the sensor module 13 is equal to the friction force F exerted on the test slider 12 in the direction of the first straight line 102. f The two straight lines 104 and 105 are collinear, so there is no need to calculate the angle between the force and the first straight line 102 during calculation, which makes the calculation more convenient and has a smaller error.

[0036] As an optional embodiment, the online friction coefficient testing device 100 is arranged at a position where the film surface is parallel to the horizontal plane in the film production line 200, and the sensor module 13 detects the force exerted on the test slider 12 in the direction of the first straight line 102. At this time, the gravity of the test slider 12 and the support force F exerted on the test slider 12 in the direction of the third straight line 104 are equal. N The force detected by the sensor module 13 is equal to the friction force F of the test slider 12 in the direction of the first straight line 102. f The equal size makes the calculation of the friction coefficient more convenient. There is no need to calculate the angle when calculating the friction coefficient, which makes the error of the measured friction coefficient smaller and more accurate.

[0037] As an optional implementation, Figure 2 As shown, the test slider 12 includes a slider body 121, and the slider body 121 is connected to the sensor module 13. The slider body 121 is in direct contact with the film 200 being produced. When it is necessary to test the friction coefficient between the film 200 and a certain material, the material can be directly made into the slider body 121, and the slider body 121 can be connected to the sensor module 13 to perform a friction coefficient test, so that the friction coefficient between the material and the film 200 can be measured.

[0038] As an optional implementation, Figure 3As shown, the test slider 12 includes a slider body 121, and a test sample 300 is provided on one side of the slider body 121 close to the film 200. The test sample 300 can be attached to the surface of the slider body 121, or can be nested in the surface of the slider body 121. When the friction coefficient between the film 200 and a certain material needs to be tested, the material can be made into the test sample 300, and the test sample 300 can be attached and nested in the slider body 121, and the friction coefficient between the material and the film 200 can be measured by the online friction coefficient testing device 100. In order to improve the accuracy of the friction coefficient test, the weight of the test slider 12 needs to be appropriate. However, for different materials, their densities are different, and the weight of the manufactured slider body 121 may be too large or too small. When the weight of the test slider 12 is too small, the error of the measured data is large; when the weight of the test slider 12 is too large, the film 200 will be deformed when the test slider 12 is placed on the film 200, and the accuracy of the friction coefficient test is reduced. Therefore, the material to be tested is made into a smaller and lighter test sample 300, and the test sample 300 is attached to the slider body 121 made of other materials. The weight of the test slider 12 is adjusted by changing the size of the slider body 121, which can improve the accuracy of the friction coefficient test. The preparation of the test sample 300 is simpler, which can improve the convenience of the online friction coefficient test device 100 when in use.

[0039] As an optional implementation, Figure 4 As shown, the test slider 12 includes a slider body 121 and a fixture 122 disposed on the slider body 121, and the slider body 121 is connected to the sensor module 13. When the friction coefficient between the film 200 and a certain material needs to be tested, the material can be made into a test sample 300, and the test sample 300 can be clamped by the fixture 122, so that the test sample 300 is attached to the film surface, and the friction coefficient between the material and the film 200 can be measured by the online friction coefficient testing device 100. Compared with directly attaching the test sample 300 to the slider body 121, the method of clamping with the fixture 122 is more stable and easier to replace the test sample 300.

[0040] As an optional implementation, Figure 5 As shown, the clamp 122 includes at least one of a rectangular clamp block, a trapezoidal clamp block, a convex clamp block or other irregularly shaped clamp blocks. The slider body 121 is provided with a groove 1211 that matches the shape of the clamp 122, and the clamp 122 is plugged into the groove 1211. The plug-in method is easy to disassemble, making it more convenient to replace the test sample 300, and improving the convenience of the online friction coefficient test device 100. The convex shape of the convex clamp block can be semicircular (such as Figure 4 As shown), rectangle (as Figure 5As shown), a trapezoid, a triangle or other irregular shapes, it is sufficient to ensure that the convex clamping block can clamp the test specimen 300.

[0041] As an optional embodiment, the clamp 122 can also be a concave clamp block, and the slider body 121 is provided with a protrusion matching the shape of the clamp 122, and the clamp 122 is plugged into the protrusion of the slider body 121. The shape of the clamp 122 can be varied, as long as the clamp 122 can clamp the test sample 300.

[0042] As an optional implementation, Figure 6 As shown, the online friction coefficient testing device 100 further includes a driving module 14 for driving the sensing module 13 or the bracket 11 to move along the second straight line 103, and the driving module 14 is connected to the bracket 11 or the sensing module 13. The driving device can drive the sensing module 13 or the bracket 11 along the second straight line 103, so that the online friction coefficient testing device 100 can test the friction coefficient of the film 200 at different width positions.

[0043] As an optional implementation, the driving module 14 drives the sensing module 13 or the bracket 11 to reciprocate in the direction of the second straight line 103 at certain time intervals, so that the online friction coefficient testing device 100 can test the friction coefficient of the film 200 in the entire wide range.

[0044] As an optional implementation, the sensor module 13 is a tension sensor module 13 or a pressure sensor module 13. The tension sensor module 13 or the pressure sensor module 13 can simply and accurately measure the force exerted on the test slider 12, so that the online friction coefficient test device 100 has better accuracy.

[0045] As an optional implementation, Figure 7 As shown, the online friction coefficient testing device 100 also includes a data processing module 15. The data processing module 15 is connected to the sensor module 13, and the data processing module 15 is used to process the data measured by the sensor module 13. The data module can record the force tested by the sensor module 13, and calculate and display the friction coefficient according to the set weight of the test slider 12. When the driving module 14 drives the sensor module 13 or the bracket 11 to move along the second straight line 103, the data processing module 15 can record the friction coefficient at different positions according to the displacement distance, so that the staff can more timely and clearly understand whether the friction coefficient of the film 200 is normal, thereby improving the convenience of the online friction coefficient testing device 100.

[0046] The present application also provides a method Figure 8The friction coefficient testing system 400 shown is used to test the friction coefficient of the film 200 in production in real time. The friction coefficient testing system 400 includes at least one online friction coefficient testing device 100 and a first guide roller group 41. The first guide roller group 41 makes the film 200 in a taut state. Preferably, the first guide roller group 41 transports the film 200 in a manner that the film surface is parallel to the horizontal plane. The online friction coefficient testing device 100 is arranged on the film surface of the film 200, and the test slider 12 is attached to the film surface of the film 200. Through the guidance and transportation of the first guide roller group 41, the film surface of the film 200 is in a taut state when the film 200 is transported in the first guide roller group 41, so as to facilitate the online friction coefficient testing device 100 to test the friction coefficient of the film 200, reduce the test error, and improve the accuracy of the test of the online friction coefficient testing device 100.

[0047] As an optional implementation, Fig. 9 As shown, the two opposite film surfaces of the film 200 are defined as the first surface 21 and the second surface 22. The first guide roller set 41 includes a first guide roller 411 and a second guide roller 412. The first guide roller 411 is in contact with the second surface 22 of the film 200, and the second guide roller 412 is in contact with the second surface 22 of the film 200. The first guide roller set 41 allows the film 200 to be transported with the first surface 21 facing upward. The test slider 12 is disposed on the first surface 21. The online friction coefficient test device 100 can measure the friction coefficient of the first surface 21 of the film 200. As an optional embodiment, Fig.10 As shown, the two opposite film surfaces of the film 200 are defined as the first surface 21 and the second surface 22. The first guide roller set 41 includes a first guide roller 411 and a second guide roller 412, the first guide roller 411 is in contact with the second surface 22 of the film 200, and the second guide roller 412 is in contact with the second surface 22 of the film 200. The first guide roller set 41 allows the film 200 to be transported with the second surface 22 facing upward, the test slider 12 is disposed on the second surface 22, and the online friction coefficient testing device 100 can measure the friction coefficient of the second surface 22 of the film 200.

[0048] As an optional implementation, Fig.11As shown, the friction coefficient testing system 400 includes a first guide roller group 41, a second guide roller group 42 and at least two online friction coefficient testing devices 100. The first guide roller group 41 and the second guide roller group make the film 200 in a taut state. Preferably, the first guide roller group 41 and the second guide roller group make the film 200 be transported in a manner that the film surface is parallel to the horizontal plane. The two opposite film surfaces of the film 200 are defined as the first surface 21 and the second surface 22. The first guide roller group 41 includes a first guide roller 411 and a second guide roller 412, the first guide roller 411 is in contact with the second surface 22 of the film 200, and the second guide roller 412 is in contact with the second surface 22 of the film 200. The first guide roller group 41 makes the film 200 be transported in a manner that the first surface 21 faces upward, the test slider 12 is arranged on the first surface 21, and the online friction coefficient testing device 100 can measure the friction coefficient of the first surface 21 of the film 200. The second guide roller group 42 includes a third guide roller 421 and a fourth guide roller 422. The third guide roller 421 is in contact with the first surface 21 of the film 200, and the fourth guide roller 422 is in contact with the second surface 22 of the film 200. The second guide roller group 42 allows the film 200 to be transported with the second surface 22 facing upward. The test slider 12 is disposed on the second surface 22, and the online friction coefficient testing device 100 can measure the friction coefficient of the second surface 22 of the film 200. By providing two guide roller groups and a plurality of online friction coefficient testing devices 100, the online friction coefficient testing device 100 can simultaneously measure the friction coefficients of the first surface 21 and the second surface 22 of the film 200, thereby improving the testing efficiency of the friction coefficient.

[0049] It should be noted that the first surface 21 facing upward does not only mean that the first surface 21 is facing vertically upward, and the first surface 21 can be considered to be facing upward if the angle between the first surface 21 and the vertically upward direction is less than 90°. The same is true for the first surface 22 facing upward.

[0050] In summary, the online friction coefficient testing device in the present application can test the friction coefficient of the film in real time during the film production process, and can test whether the friction coefficient of the entire film is within the standard range, thereby improving the timeliness and accuracy of the friction coefficient test.

[0051] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An online friction coefficient testing device, used to test the friction coefficient of the film in production in real time, It is characterized in that The online friction coefficient testing device comprises: a support, the support being disposed close to the film; A test slider, the test slider is attached to the film surface of the film and generates relative movement with the film when the film is conveyed; A sensing module, one end of which is connected to the bracket, and the other end of which is connected to the test slider, and the sensing module is used to test the force applied to the test slider.

2. The online friction coefficient testing device according to claim 1, Features: The test slider includes a slider body connected to the sensor module.

3. The online friction coefficient testing device according to claim 1, Features: The test slider comprises a slider body and a fixture arranged on the slider body; The slider body is connected to the sensor module.

4. The online friction coefficient testing device according to claim 3, Features: The slider body is provided with a groove; The clamp comprises at least one of a rectangular clamp block, a trapezoidal clamp block, a convex clamp block or an irregular clamp block, and the clamp is inserted into the groove.

5. The online friction coefficient testing device according to claim 1, Features: The plane where the film is located is defined as a preset plane, the direction in which the film is transported is defined as a first straight line, and a second straight line is defined which is parallel to the preset plane and perpendicular to the first straight line; The online friction coefficient testing device further includes a driving module for driving the sensing module or the bracket to move along a second straight line direction, and the driving module is connected to the bracket or the sensing module.

6. The online friction coefficient testing device according to claim 1, Features: The sensing module is a tension sensing module or a pressure sensing module.

7. The online friction coefficient testing device according to claim 1, Features: The online friction coefficient testing device also includes a data processing module; The data processing module is connected to the sensor module, and is used for processing the data measured by the sensor module.

8. A friction coefficient testing system for real-time testing of the friction coefficient of the film in production. Features: The friction coefficient testing system comprises at least one online friction coefficient testing device as claimed in any one of claims 1 to 7 and a first guide roller set; The first guide roller group makes the film in a taut state; The online friction coefficient testing device is arranged on the film surface of the film, and the testing slider is attached to the film surface of the film.

9. The friction coefficient testing system according to claim 8, Features: The two opposite film surfaces of the film are defined as a first surface and a second surface respectively; The first guide roller group allows the film to be transported with the first surface or the second surface facing upward; when the first guide roller group allows the film to be transported with the first surface facing upward, the test slider is disposed on the first surface; When the first guide roller set transports the film with the second surface facing upward, the test slider is disposed on the second surface.

10. The friction coefficient testing system according to claim 8, Features: The friction coefficient testing system further comprises a second guide roller set, wherein the second guide roller set keeps the film in a taut state; The two opposite film surfaces of the film are defined as a first surface and a second surface respectively; The first guide roller group transports the film with the first surface facing upward, and the test slider is disposed on the first surface; The second guide roller group transports the film with the second surface facing upward, and the test slider is arranged on the second surface.

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