PE film high temperature friction detector
Patent Information
- Application Number
- CN202522424365.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-14
AI Technical Summary
[0004]目前，裁切的大面积薄膜先一步定位到试验台上，而随着高温摩擦检测仪的运行，其薄膜中间部分可能会出现翘起的情况发生，且在温度变化的情况下，可能会导致薄膜出现褶皱翘曲的变化，继而影响摩擦检测的准确性
本申请技术方案通过在凸型杆上设置电动推杆及U型架，U型架内壁转动安装抚平辊，检测时，电动推杆带动U型架下移，抚平辊持续压制大面积薄膜，且抚平辊随着滑块和凸型杆检测移动，比之传统仅对大面积薄膜两端定位的方式，有效避免高温环境下薄膜中间部分翘起、褶皱翘曲的问题，保证薄膜表面平整，减少因薄膜不平整对摩擦检测造成的干扰，提高摩擦检测的准确性。
Smart Images
Figure CN224839759U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thin film friction testing technology, specifically a high-temperature friction tester for PE films. Background Technology
[0002] PE film, or polyethylene film, refers to film produced from PE granules. PE film has moisture-proof properties and low moisture permeability. Depending on the manufacturing method and control measures, polyethylene film can be made into products with different properties, such as low-density, medium-density, high-density polyethylene, and cross-linked polyethylene.
[0003] Friction testing of PE film involves placing a large area of the film on the test platform of a testing instrument, with both ends of the large area film positioned by positioning mechanisms. Then, a small area of film is cut and fitted onto the outer wall of the slider. With the help of a horizontal moving structure, the slider is moved, thereby detecting the friction of the film.
[0004] Currently, large-area cut films are positioned on the test platform first. However, as the high-temperature friction tester operates, the middle part of the film may warp up. Furthermore, under temperature changes, the film may wrinkle and warp, which in turn affects the accuracy of friction testing. Utility Model Content
[0005] The purpose of this application is to provide a high-temperature friction tester for PE film, which solves the problem in the background art where a large area of cut film is positioned on the test platform in advance, and as the high-temperature friction tester operates, the middle part of the film may warp up, and under temperature changes, the film may wrinkle and warp, thus affecting the accuracy of friction testing.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This application provides a high-temperature friction tester for PE film, including a test control box. A heat insulation plate is fixedly installed on the upper end of the test control box, and a metal test platform is fixedly installed on the upper end of the heat insulation plate. A positioning magnet is magnetically attracted to the upper end of one side of the metal test platform. A slider is arranged above the test platform, and a friction sensor is fixedly installed on the lower end of the slider. A bracket is fixedly installed on the upper end of the slider, and a convex rod is inserted into the bracket on the side away from the slider. A moving mechanism for lateral movement of the convex rod is provided on one side of the convex rod. An electric push rod is fixedly installed on the upper end of the convex rod, and a U-shaped frame is fixedly installed on the telescopic end of the electric push rod. A smoothing roller is rotatably installed on the inner wall of the U-shaped frame. A heating mechanism is provided inside the metal test platform, and a positioning mechanism is provided on the outer wall of the slider.
[0007] By adopting the above technical solution, an electric push rod and a U-shaped frame are set on the convex rod, and a smoothing roller is rotatably installed on the inner wall of the U-shaped frame. During the test, the electric push rod drives the U-shaped frame to move down, and the smoothing roller continuously presses the large-area film. The smoothing roller moves with the slider and the convex rod for detection. Compared with the traditional method of only positioning the two ends of the large-area film, this effectively avoids the problem of the middle part of the film lifting, wrinkling and warping under high temperature environment, ensures the flatness of the film surface, reduces the interference caused by the unevenness of the film to the friction test, and improves the accuracy of the friction test.
[0008] Optionally, the positioning mechanism includes an elastic strap fitted onto the outer wall of the slider.
[0009] By adopting the above technical solution, a small area film is fitted onto the outer wall of the slider and the friction sensor, and then the elastic strap can quickly position the small area film onto the outer wall of the slider.
[0010] Optionally, the heating mechanism includes multiple sets of heating tubes fixedly installed on the inner wall of the metal test bench, and a temperature sensor is installed on the outer wall of the metal test bench.
[0011] By adopting the above technical solution, the heating tube can be fixed by the metal test bench, and the heating tube can heat the metal test bench, which in turn heats the thin film. The temperature sensor can detect the heating temperature.
[0012] Optionally, the heat insulation board is made of stainless steel, and an aerogel layer is bonded to the upper end of the stainless steel.
[0013] By adopting the above technical solution, the heat insulation board is made of stainless steel and composed of an aerogel layer, which can then play a role in isolating temperature.
[0014] Optionally, the moving mechanism includes a housing fixedly installed on the upper end of the detection control box, a lead screw rotatably mounted on the inner wall of the housing, and a stepper motor mounted on the outer wall of the housing.
[0015] By adopting the above technical solution, the detection control box can fix the housing, the housing can provide rotational support for the lead screw, and the housing can fix the stepper motor, which can drive the lead screw to rotate and has the function of driving the lead screw to reciprocate.
[0016] Optionally, the convex rod helical drive is mounted on the outer wall of the lead screw, and the outer wall of the convex rod is slidably connected to the inner wall of the housing.
[0017] By adopting the above technical solution, the housing can guide the movement of the convex rod, and the rotation of the lead screw can drive the convex rod to move.
[0018] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows: The technical solution of this application sets an electric push rod and a U-shaped frame on a convex rod. A smoothing roller is rotatably installed on the inner wall of the U-shaped frame. During the test, the electric push rod drives the U-shaped frame to move down, and the smoothing roller continuously presses the large-area film. The smoothing roller moves with the slider and the convex rod for detection. Compared with the traditional method of only positioning the two ends of the large-area film, it effectively avoids the problem of the middle part of the film lifting, wrinkling and warping under high temperature environment, ensures the flatness of the film surface, reduces the interference of the unevenness of the film on the friction test, and improves the accuracy of the friction test. Attached Figure Description
[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is an axial view schematic diagram of a high-temperature friction tester for PE film according to this application; Figure 2 This is a schematic cross-sectional view of the left side of a high-temperature friction tester for PE film according to this application. Figure 3 This application provides a high-temperature friction tester for PE film. Figure 2 Enlarged view of point A in the middle; Figure 4 This is an enlarged view of the slider of a high-temperature friction tester for PE film according to this application.
[0020] In the diagram: 1. Detection and control box; 2. Heat insulation board; 3. Metal test bench; 4. Housing; 5. Stepper motor; 6. Lead screw; 7. Convex rod; 8. Electric push rod; 9. U-shaped frame; 10. Smoothing roller; 11. Positioning magnet; 12. Insert bracket; 13. Slider; 14. Elastic strap; 15. Friction sensor; 16. Heating tube; 17. Temperature sensor. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-4This application provides a technical solution: a PE film high-temperature friction tester, including a test control box 1, a heat insulation plate 2 fixedly installed on the upper end of the test control box 1, a metal test platform 3 fixedly installed on the upper end of the heat insulation plate 2, a positioning magnet 11 magnetically adsorbed on the upper end of one side of the metal test platform 3, a slider 13 arranged above the test platform, a friction sensor 15 fixedly installed on the lower end of the slider 13, a bracket 12 fixedly installed on the upper end of the slider 13, a convex rod 7 inserted into the side of the bracket 12 away from the slider 13, a moving mechanism for lateral movement of the convex rod 7 is arranged on one side of the convex rod 7, an electric push rod 8 fixedly installed on the upper end of the convex rod 7, a U-shaped frame 9 fixedly installed on the telescopic end of the electric push rod 8, a smoothing roller 10 rotatably installed on the inner wall of the U-shaped frame 9, a heating mechanism is arranged inside the metal test platform 3, and a positioning mechanism is arranged on the outer wall of the slider 13; In the technical solution of this application, an electric push rod 8 and a U-shaped frame 9 are set on the convex rod 7. A smoothing roller 10 is rotatably installed on the inner wall of the U-shaped frame 9. During the test, the electric push rod 8 drives the U-shaped frame 9 to move down, and the smoothing roller 10 continuously presses the large-area film. The smoothing roller 10 moves with the slider 13 and the convex rod 7 for detection. Compared with the traditional method of only positioning the two ends of the large-area film, this effectively avoids the problem of the middle part of the film lifting, wrinkling and warping under high temperature environment, ensures the flatness of the film surface, reduces the interference caused by the unevenness of the film to the friction test, and improves the accuracy of the friction test.
[0023] In the technical solution of this application, such as Figure 1 and Figure 2 As shown, the moving mechanism includes a housing 4 fixedly installed on the upper end of the detection control box 1. A lead screw 6 is rotatably installed on the inner wall of the housing 4, and a stepper motor 5 is installed on the outer wall of the housing 4. The detection control box 1 can fix the housing 4, and the housing 4 can provide rotational support for the lead screw 6. The housing 4 can also fix the stepper motor 5, which can drive the lead screw 6 to rotate and has the function of driving the lead screw 6 to reciprocate. A convex rod 7 is helically installed on the outer wall of the lead screw 6, and the outer wall of the convex rod 7 is slidably connected to the inner wall of the housing 4. The housing 4 can guide the movement of the convex rod 7, and the rotation of the lead screw 6 can drive the convex rod 7 to move.
[0024] In the technical solution of this application, such as Figures 1-3As shown, the heating mechanism includes multiple sets of heating tubes 16 fixedly installed on the inner wall of the metal test bench 3. A temperature sensor 17 is installed on the outer wall of the metal test bench 3. The metal test bench 3 can fix the heating tubes 16, and the heating tubes 16 can heat the metal test bench 3, thereby heating the film. The temperature sensor 17 can detect the heating temperature. The heat insulation plate 2 is made of stainless steel, and an aerogel layer is bonded to the upper end of the stainless steel. The heat insulation plate 2 is composed of stainless steel and an aerogel layer, which can isolate the temperature.
[0025] In the technical solution of this application, such as Figure 1 and Figure 4 As shown, the positioning mechanism includes an elastic strap 14 sleeved on the outer wall of the slider 13. A small area film is sleeved on the outer wall of the slider 13 and the friction sensor 15, and the elastic strap 14 can quickly position the small area film to the outer wall of the slider 13.
[0026] In use, the operator first places a large-area PE film on the metal test bench 3 and initially positions one end using the positioning magnet 11. Then, a small-area film is tied to the outside of the slider 13 and friction sensor 15 using the elastic strap 14, and then installed on the convex rod 7 with the cooperation of the insert 12. At this time, the small-area film is in contact with the large-area film. The telescopic end of the electric push rod 8 drives the U-shaped frame 9 to move down, so that the smoothing roller 10, which is rotatably installed on the inner wall of the U-shaped frame 9, tightly presses the large-area film surface. Meanwhile, the stepper motor 5 drives the lead screw 6, which rotates on the inner wall of the housing 4, to rotate back and forth. Because the convex rod 7 is helically driven and installed on the outer wall of the lead screw 6 and is slidably connected to the inner wall of the housing 4, the lead screw 6 rotates... The convex rod 7 moves laterally, and the convex rod 7 drives the slider 13 to move synchronously through the bracket 12. The friction sensor 15 at the lower end of the slider 13 moves with the small area film, generating friction with the large area film continuously pressed by the smoothing roller 10. Multiple sets of heating tubes 16 on the inner wall of the metal test bench 3 work to heat the test bench, and then heat the film. The temperature sensor 17 on the outer wall detects the heating temperature in real time. The heat insulation plate 2 isolates the heat to prevent it from affecting the detection control box 1. The smoothing roller 10 moves with the slider 13 and the convex rod 7, continuously pressing the film, effectively avoiding the middle part of the film from warping and wrinkling at high temperatures, ensuring the film surface is flat, and improving the accuracy of friction detection.
Claims
1. A high-temperature friction tester for PE film, characterized in that: The test includes a detection control box (1), a heat insulation plate (2) is fixedly installed on the upper end of the detection control box (1), a metal test bench (3) is fixedly installed on the upper end of the heat insulation plate (2), a positioning magnet (11) is magnetically attracted on the upper end of one side of the metal test bench (3), a slider (13) is provided above the test bench, a friction sensor (15) is fixedly installed on the lower end of the slider (13), a bracket (12) is fixedly installed on the upper end of the slider (13), a convex rod (7) is inserted on the side of the bracket (12) away from the slider (13), a moving mechanism for lateral movement is provided on one side of the convex rod (7), an electric push rod (8) is fixedly installed on the upper end of the convex rod (7), a U-shaped frame (9) is fixedly installed on the telescopic end of the electric push rod (8), a smoothing roller (10) is rotatably installed on the inner wall of the U-shaped frame (9), a heating mechanism is provided inside the metal test bench (3), and a positioning mechanism is provided on the outer wall of the slider (13).
2. The PE film high-temperature friction tester according to claim 1, characterized in that, The positioning mechanism includes an elastic strap (14) sleeved on the outer wall of the slider (13).
3. The PE film high-temperature friction tester according to claim 1, characterized in that, The heating mechanism includes multiple sets of heating tubes (16) fixedly installed on the inner wall of the metal test bench (3), and a temperature sensor (17) is installed on the outer wall of the metal test bench (3).
4. The PE film high-temperature friction tester according to claim 1, characterized in that, The heat insulation board (2) is made of stainless steel, and an aerogel layer is bonded to the upper end of the stainless steel.
5. The PE film high-temperature friction tester according to claim 1, characterized in that, The moving mechanism includes a housing (4) fixedly installed on the upper end of the detection control box (1), a lead screw (6) is rotatably installed on the inner wall of the housing (4), and a stepper motor (5) is installed on the outer wall of the housing (4).
6. A high-temperature friction tester for PE film according to claim 5, characterized in that, The convex rod (7) is helically driven and installed on the outer wall of the lead screw (6), and the outer wall of the convex rod (7) is slidably connected to the inner wall of the housing (4).