Device for testing wear resistance of plastic film

Abstract

The utility model belongs to the technical field of plastic film production, and particularly relates to a plastic film abrasion resistance testing device which comprises a detection table and a detection groove, the detection groove is formed in the upper surface of the detection table, a pressing frame is movably arranged in an inner cavity of the detection groove, and the two ends of the upper surface of the pressing frame are rotationally connected with adjusting lead screws. A driving hand wheel is fixedly connected to the top of the adjusting lead screw, an air pump is installed on the lower surface of the detection table, the exhaust end of the air pump is communicated with the detection groove, a stand column is welded to the surface of the detection table, a rocker arm is rotationally arranged at the end of the transverse edge of the stand column, and a rotating disc is fixedly connected to the bottom of the rocker arm. The plastic film expands after being inflated, the upper surface of the plastic film is in contact with the surface of the friction plate, and the friction plate rubs the surface of the plastic film until the plastic film leaks air, so that the wear resistance of the plastic film can be quickly tested; and the plastic films made of different materials can be conveniently compared and tested.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a plastic film wear resistance testing device. Background Art

[0002] Plastic films are not only divided into high-pressure and low-pressure types, but also have many categories. Generally speaking, films include polyethylene (PE). Polyethylene can be classified by its polymerization method, including high-pressure polymerization and low-pressure polymerization. The resin polymerized by high-pressure method generally has a lower density, so it is also called low-density polyethylene. The resin polymerized by low-pressure method has a higher density, so it is also called high-density polyethylene. In the process of plastic film production and research and development, it is necessary to use wear resistance testing equipment to test the wear resistance of plastic film.

[0003] The invention patent currently published with the publication number CN211576855U discloses a wear tester for testing the wear resistance of plastic diaphragms. By arranging a support base on the machine platform and a pressure adjustment rod on the support base, the pressure of the pressure device on the test head is adjusted by using the pressure adjustment disk on the pressure adjustment rod. There is no need to replace the weights back and forth, and no need for a special weight box. The pressure can be adjusted by simply rotating the pressure adjustment disk. The pressure adjustment is relatively linear, with a large adjustment range and a fast adjustment speed. This solves the problem that when performing wear resistance tests on plastic diaphragms, weights need to be frequently replaced to change the pressure for testing, and a special weight box is required to hold the weights. Since it is inconvenient to take and place the weights, the test time of the entire test process is increased, and the weight adjustment is not linear enough.

[0004] The existing plastic film wear resistance testing device has a complex structure and is inconvenient to operate. It is impossible to quickly test the wear resistance of the plastic film during use. At the same time, when testing different types of plastic films, it is impossible to perform a comparative test on the wear resistance of the plastic film. In order to solve the above problems, a plastic film wear resistance testing device is proposed in this application. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a plastic film wear resistance testing device. The plastic film expands after being inflated with air, and the upper surface of the plastic film contacts the surface of the friction plate. The friction plate rubs the surface of the plastic film until the plastic film leaks, which can realize a rapid test of the wear resistance of the plastic film. The number of rotations of the turntable can be counted by the counter, which is convenient for comparative testing of plastic films of different materials, so as to solve the problems raised in the background technology.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a plastic film wear resistance testing device, comprising a testing platform and a testing slot, wherein the testing slot is provided on the upper surface of the testing platform, a pressure frame is movably provided in the inner cavity of the testing slot, and an adjusting screw is rotatably connected to both ends of the upper surface of the pressure frame, and a driving handwheel is fixedly connected to the top of the adjusting screw;

[0009] An air pump is installed on the lower surface of the testing table, and the exhaust end of the air pump is conductively connected to the testing tank;

[0010] A column is welded on the surface of the detection platform. A rocker arm is rotatably provided at the horizontal end of the column. A turntable is fixedly connected to the bottom of the rocker arm. A friction plate is movably provided on the lower surface of the turntable.

[0011] Preferably, guide rods are welded at the corners of the inner cavity of the detection slot, and guide holes are penetrated through the surface of the pressure frame at positions corresponding to the guide rods, and the guide rods are plugged into the guide holes.

[0012] Preferably, a rubber pad is pasted on the bottom surface of the inner cavity of the detection tank, and a rubber frame is pasted on the lower surface of the pressure frame.

[0013] Preferably, a pressure gauge is embedded on the side wall surface of the testing table, and the pressure gauge is connected to the exhaust end of the air pump.

[0014] Preferably, a Velcro tape is pasted on the lower surface of the turntable, and a Velcro tape is pasted on the upper surface of the friction plate, and the Velcro tape is pasted to the Velcro tape.

[0015] Preferably, a counter is embedded on the surface of the horizontal end of the column, and the counter is matched with the rocker arm.

[0016] Preferably, a solenoid valve is installed at the exhaust end of the air pump.

[0017] The above technical solution of the utility model has the following beneficial technical effects:

[0018] 1. In the utility model, the plastic film expands after being inflated with air, and the upper surface of the plastic film contacts the surface of the friction plate. The air pressure in the plastic film can be measured by a pressure gauge to ensure that the air pressure in each group of tested plastic films is the same, so that the surface pressure of the plastic film and the friction plate are the same. The rocker arm drives the turntable to rotate, and the friction plate can rub the surface of the plastic film until the plastic film leaks. The wear resistance of the plastic film can be quickly tested. The number of rotations of the turntable can be counted by a counter, which is convenient for comparative testing of plastic films of different materials.

[0019] 2. In the present invention, the friction plate is fixed by sticking the Velcro tape to the Velcro tape, which makes it easy to quickly replace the friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a plastic film wear resistance testing device of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of a plastic film wear resistance testing device according to the present invention;

[0022] Figure 3 This is a schematic diagram of the exploded structure of a test bench for a plastic film wear resistance test device of the present invention;

[0023] Figure 4 The utility model is a schematic diagram of the disassembly and assembly structure of the friction plate of a plastic film wear resistance testing device.

[0024] Reference numerals:

[0025] 1. Test table; 2. Test tank; 3. Press frame; 4. Adjustment screw; 5. Driving handwheel; 6. Guide rod; 7. Air pump; 8. Solenoid valve; 9. Rubber frame; 10. Rubber pad; 11. Pressure gauge; 12. Column; 13. Rocker arm; 14. Turntable; 15. Friction plate; 16. Velcro; 17. Velcro; 18. Counter. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0027] like Figure 1-4 As shown, the present invention proposes a plastic film wear resistance testing device, comprising a testing platform 1 and a testing slot 2. The testing slot 2 is provided on the upper surface of the testing platform 1. A pressure frame 3 is movably provided in the inner cavity of the testing slot 2. Adjustment screws 4 are rotatably connected to both ends of the upper surface of the pressure frame 3. A driving handwheel 5 is fixedly connected to the top of the adjustment screw 4.

[0028] An air pump 7 is installed on the lower surface of the detection table 1, and the exhaust end of the air pump 7 is conductively connected to the detection tank 2;

[0029] A column 12 is welded on the surface of the testing platform 1 , and a rocker arm 13 is rotatably provided at the horizontal end of the column 12 . A turntable 14 is fixedly connected to the bottom of the rocker arm 13 , and a friction plate 15 is movably provided on the lower surface of the turntable 14 .

[0030] It should be noted that the plastic film is laid in the detection groove 2, and the driving hand wheel 5 drives the adjusting screw 4 to rotate. The adjusting screw 4 pushes the pressure frame 3 down under the action of the surface thread. The guide rod 6 and the guide hole can play a guiding role in the lifting and lowering of the pressure frame 3. The pressure frame 3 is pressed on the upper surface of the plastic film. The rubber pad 10 and the rubber frame 9 abut against the upper and lower surfaces of the plastic film, which can improve the sealing of the edge of the plastic film. The air pump 7 injects compressed air into the plastic film. The plastic film expands after inflation. The upper surface of the plastic film contacts the surface of the friction plate 15. The air pressure in the plastic film can be measured by the barometer 11 to ensure that the air pressure in each group of tested plastic films is the same, so that the surface pressure of the plastic film and the friction plate 15 are the same. The rocker arm 13 drives the turntable 14 to rotate, and the friction plate 15 can be used to rub the surface of the plastic film until the plastic film leaks. The number of rotations of the turntable 14 can be counted by the counter 18, which can realize a rapid test of the wear resistance of the plastic film.

[0031] In this embodiment, if Figure 3 As shown, guide rods 6 are welded at the corners of the inner cavity of the detection slot 2, and guide holes are opened through the surface of the pressure frame 3 at positions corresponding to the guide rods 6, and the guide rods 6 are plugged into the guide holes.

[0032] It should be noted that the guide rod 6 is plugged into the guide hole to guide the lifting and lowering of the pressing frame 3 .

[0033] In this embodiment, if Figure 3 As shown, a rubber pad 10 is pasted on the bottom surface of the inner cavity of the detection tank 2, and a rubber frame 9 is pasted on the lower surface of the pressing frame 3.

[0034] It should be noted that the pressing frame 3 is pressed on the upper surface of the plastic film, and the rubber pad 10 and the rubber frame 9 are in contact with the upper and lower surfaces of the plastic film, which can improve the sealing performance at the edge of the plastic film.

[0035] In this embodiment, if Figure 2 As shown, a pressure gauge 11 is embedded on the side wall surface of the detection platform 1, and the pressure gauge 11 is connected to the exhaust end of the air pump 7.

[0036] It should be noted that the air pressure inside the plastic film can be measured by the barometer 11 to ensure that the air pressure inside each group of tested plastic films is the same, so that the surface pressure of the plastic film and the friction plate 15 are the same, thereby improving the accuracy of the wear resistance test of the plastic film.

[0037] In this embodiment, if Figure 4 As shown, a Velcro 16 is pasted on the lower surface of the turntable 14 , and a Velcro 17 is pasted on the upper surface of the friction plate 15 , and the Velcro 17 is pasted on the Velcro 16 .

[0038] It should be noted that the friction plate 15 is fixed by sticking the Velcro 16 and the Velcro 17 together, which makes it easy to quickly replace the friction plate 15.

[0039] In this embodiment, if Figure 4 As shown, a counter 18 is embedded on the surface of the horizontal end of the column 12 , and the counter 18 is matched with the rocker arm 13 .

[0040] It should be noted that the counter 18 can count the number of rotations of the rocker arm 13 .

[0041] In this embodiment, if Figure 2 As shown, a solenoid valve 8 is installed at the exhaust end of the air pump 7.

[0042] It should be noted that after the gas is injected into the plastic film, the solenoid valve 8 can be closed to seal the gas in the plastic film.

[0043] The working principle and use process of the utility model are as follows: the plastic film is laid in the detection groove 2, the driving hand wheel 5 drives the adjusting screw 4 to rotate, the adjusting screw 4 pushes the pressing frame 3 down under the action of the surface thread, the guide rod 6 and the guide hole match to guide the lifting and lowering of the pressing frame 3, the pressing frame 3 is pressed on the upper surface of the plastic film, and the rubber pad 10 and the rubber frame 9 are in contact with the upper and lower surfaces of the plastic film to improve the sealing of the edge of the plastic film, the air pump 7 injects compressed air into the plastic film, the plastic film expands after being inflated, and the upper surface of the plastic film contacts the surface of the friction plate 15 The air pressure in the plastic film can be measured by the barometer 11 to ensure that the air pressure in each group of tested plastic films is the same, so that the surface pressure of the plastic film and the friction plate 15 are the same. The rocker arm 13 drives the turntable 14 to rotate, and the friction plate 15 can be used to rub the surface of the plastic film until the plastic film leaks. The number of rotations of the turntable 14 can be counted by the counter 18, which can realize a quick test of the wear resistance of the plastic film. The friction plate 15 is fixed by sticking the Velcro 16 and the Velcro 17 together, which can facilitate the quick replacement of the friction plate 15.

[0044] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims or their equivalents.

Claims

1. A plastic film wear resistance testing device, comprising a testing platform (1) and a testing slot (2), wherein the testing slot (2) is provided on the upper surface of the testing platform (1), characterized in that: The inner cavity of the detection tank (2) is movably provided with a pressure frame (3), and the two ends of the upper surface of the pressure frame (3) are rotatably connected to the adjusting screw rod (4), and the top of the adjusting screw rod (4) is fixedly connected to the driving hand wheel (5); An air pump (7) is installed on the lower surface of the detection platform (1), and the exhaust end of the air pump (7) is conductively connected to the detection tank (2); A column (12) is welded on the surface of the detection platform (1), a rocker arm (13) is rotatably provided at the transverse end of the column (12), a turntable (14) is fixedly connected to the bottom of the rocker arm (13), and a friction plate (15) is movably provided on the lower surface of the turntable (14).

2. A plastic film wear resistance testing device according to claim 1, characterized in that: Guide rods (6) are welded at the inner corners of the detection slot (2), and guide holes are provided through the surface of the pressure frame (3) at positions corresponding to the guide rods (6), and the guide rods (6) are plugged into the guide holes.

3. A plastic film wear resistance testing device according to claim 1, characterized in that: A rubber pad (10) is adhered to the bottom surface of the inner cavity of the detection slot (2), and a rubber frame (9) is adhered to the lower surface of the pressure frame (3).

4. A plastic film wear resistance testing device according to claim 1, characterized in that: A pressure gauge (11) is embedded on the side wall surface of the detection platform (1), and the pressure gauge (11) is connected to the exhaust end of the air pump (7).

5. A plastic film wear resistance testing device according to claim 1, characterized in that: The lower surface of the turntable (14) is pasted with a Velcro (16), the upper surface of the friction plate (15) is pasted with a Velcro (17), and the Velcro (17) and the Velcro (16) are pasted to each other.

6. A plastic film wear resistance testing device according to claim 1, characterized in that: A counter (18) is embedded in the surface of the transverse end of the column (12), and the counter (18) is matched with the rocker arm (13).

7. A plastic film wear resistance testing device according to claim 1, characterized in that: The exhaust end of the air pump (7) is equipped with a solenoid valve (8).

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