A device for testing the electrostatic performance of a mylar sheet

Abstract

The utility model provides a kind of mylar static performance testing device, it is related to mylar production technical field, and it includes: test table;Two groups of support cylinders are welded in the top of test table, and one pressure roller support frame is slidably installed in the inside of two groups of support cylinders, and one mylar pressure roller is rotatably installed in the bottom of pressure roller support frame;A screw rod support block is fixed in the top middle position of test table, and a screw rod is rotatably installed in the middle of screw rod support block;Left and right sides of test table are both equipped with one electric cylinder by support, and one electrostatic friction brush plate is fixed in the one end of electric cylinder.In mylar friction electrification and test electrostatic adsorption performance are all carried out in the same device, without transferring mylar in process, reduce the time spent.

Description

Technical Field

[0001] This utility model relates to the field of Mylar film production technology, and in particular to a Mylar film electrostatic performance testing device. Background Technology

[0002] Electrostatic adsorption Mylar sheets have been widely used in electronics, automotive electronics and other fields due to their advantages such as electrostatic adsorption of dust, tight adhesion and convenient operation. The realization of their core functions is highly dependent on stable electrostatic performance.

[0003] Currently, static electricity is usually added to Mylar tablets during production. This is done by using triboelectric charging or charging with an electrostatic generator. When using triboelectric charging, the electrostatic adsorption performance of the Mylar tablets needs to be tested. Therefore, the Mylar tablets need to be removed after charging and then moved to the testing device for testing. The testing and charging need to be done on different devices, which increases the overall labor time. Utility Model Content

[0004] This invention provides a device for testing the electrostatic properties of Mylar film, which performs both triboelectric charging and electrostatic adsorption testing on Mylar film in the same device, eliminating the need to transfer the Mylar film during the process and reducing labor time.

[0005] In a first aspect, this utility model provides a Mylar film electrostatic performance testing device, specifically comprising: a testing platform; two sets of support cylinders welded to the top of the testing platform, a pressure roller support frame slidably installed inside each of the two sets of support cylinders, and a Mylar film pressure roller rotatably installed at the bottom of each pressure roller support frame; a lead screw support block fixed at the middle of the top of the testing platform, and a lead screw rotatably installed in the middle of the lead screw support block; an electric cylinder mounted on each of the left and right sides of the testing platform via brackets, and an electrostatic friction brush plate fixed to one end of each electric cylinder.

[0006] Each of the pressure roller support frames has a threaded hole at the top center, and the threaded hole at the top center of the pressure roller support frame is engaged with the thread on the outside of the lead screw.

[0007] The pressure roller support frame and the Mylar film pressure roller are symmetrically arranged front and back, and the top outer wall of the Mylar film pressure roller is in close contact with the bottom outer wall of the test platform.

[0008] The bristles of the top plate of the electrostatic friction brush plate are also in close contact with the bottom outer wall of the test platform, and after the two Mylar film pressure rollers move toward the middle position of the test platform, the electrostatic friction brush plate will be located between the two Mylar film pressure rollers.

[0009] The support cylinder and the top surface of the test platform are each provided with a rectangular groove, and the rectangular rod above the pressure roller support frame can slide back and forth in the rectangular groove inside the support cylinder and fit tightly against the inner wall of the rectangular groove.

[0010] The outer wall of the Mylar film pressure roller is covered with a layer of rubber. When the electric cylinder is extended to its maximum length, one side of the electrostatic friction brush plate will move to the middle position at the bottom of the test platform.

[0011] The lead screw has two threaded sections on its outer side, and these two threaded sections are symmetrical reverse threads.

[0012] This invention provides a device for testing the electrostatic properties of Mylar film, which has the following advantages: The pressure roller support frame in this invention uses its bottom pressure roller to fix the Mylar sheet to the bottom of the test platform. The extension and retraction of the electric cylinder can drive the electrostatic friction brush plate to move left and right and rub against the surface of the Mylar sheet, thereby applying frictional electricity to the Mylar sheet. After the electricity is applied, the Mylar sheet will be attracted to the bottom of the test platform. Then the pressure roller can be removed to test the electrostatic adsorption performance of the Mylar sheet. The frictional electricity application and electrostatic adsorption performance testing of the Mylar sheet are all performed in the same device, without the need to transfer the Mylar sheet during the process, reducing labor time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0014] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0015] In the attached diagram: Figure 1 A top-view schematic diagram of the overall structure of this application is shown; Figure 2 This application shows a schematic diagram of the tilting axis side after the pressure roller support frame has been moved; Figure 3 An overhead view of the overall structure of this application is shown; Figure 4 This application shows a schematic diagram of the overhead axis side after the pressure roller support frame has been moved; Figure 5 A schematic diagram of the test bench in this application is shown; Figure 6 A schematic diagram of the lead screw structure in this application is shown; List of reference numerals 1. Test bench; 2. Support cylinder; 3. Pressure roller support frame; 4. Mylar film pressure roller; 5. Screw support block; 6. Screw; 7. Electric cylinder; 8. Electrostatic friction brush plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1: Please refer to Figures 1 to 6 : This utility model discloses a device for testing the electrostatic properties of Mylar film, comprising: a test platform 1; two sets of support cylinders 2 are welded to the top of the test platform 1, and a pressure roller support frame 3 is slidably installed inside each of the two sets of support cylinders 2. A Mylar film pressure roller 4 is rotatably installed at the bottom of each pressure roller support frame 3. The test platform 1 is used to support other parts of the device structure, the support cylinders 2 are used to provide stable sliding support for the pressure roller support frame 3, the pressure roller support frame 3 is used to provide rotatable support for the Mylar film pressure roller 4, and the Mylar film pressure roller 4 is used to fix the Mylar film to the bottom of the test platform 1; a lead screw support block 5 is fixed at the middle position of the top of the test platform 1. Furthermore, a lead screw 6 is rotatably mounted in the middle of the lead screw support block 5. The lead screw support block 5 is used to support the rotation of the lead screw 6. When the lead screw 6 rotates, it can drive the pressure roller support frame 3 to move back and forth by relying on the outer thread to cooperate with the threaded hole in the middle of the top of the pressure roller support frame 3. An electric cylinder 7 is mounted on each of the left and right sides of the test platform 1 through a bracket. An electrostatic friction brush plate 8 is fixed to one end of each electric cylinder 7. When the electric cylinder 7 extends and retracts, it can adjust the position of the electrostatic friction brush plate 8. The electrostatic friction brush plate 8 can continuously rub left and right on the bottom of the test platform 1 and the surface of the Mylar film, thus causing the Mylar film to generate static electricity.

[0018] In this embodiment, as Figure 1 and Figure 2 As shown, each of the pressure roller support frames 3 has a threaded hole at the top center, and the threaded hole at the top center of the pressure roller support frame 3 is engaged with the thread on the outside of the lead screw 6. Therefore, when the lead screw 6 rotates, it can drive the two pressure roller support frames 3 to move synchronously in opposite directions by relying on the engagement of the thread on its outside with the threaded hole at the top center of the pressure roller support frame 3.

[0019] In this embodiment, as Figures 1-4As shown, the pressure roller support frame 3 and the Mylar sheet pressure roller 4 are symmetrically arranged front and back, and the top outer wall of the Mylar sheet pressure roller 4 is in close contact with the bottom outer wall of the test platform 1. When in use, the Mylar sheet that needs to be electrostatically charged and tested can be laid flat in the middle position of the bottom of the test platform 1, and the lead screw 6 is driven to rotate in the forward direction. At this time, the thread on the outside of the lead screw 6 cooperates with the threaded hole in the middle of the top of the pressure roller support frame 3, which will drive the two pressure roller support frames 3 to slide synchronously toward the middle position of the test platform 1. Therefore, the Mylar sheet pressure roller 4 can roll onto the surface of the Mylar sheet, thus fixing the Mylar sheet to the bottom of the test platform 1.

[0020] In this embodiment, as Figure 3 and Figure 4 As shown, the bristles of the top plate of the electrostatic friction brush 8 are also in close contact with the bottom outer wall of the test platform 1. After the two Mylar film pressure rollers 4 move toward the middle position of the test platform 1, the electrostatic friction brush 8 will be located between the two Mylar film pressure rollers 4. During use, the electric cylinder 7 can be controlled by an external controller to quickly extend and retract. When the electric cylinder 7 extends and retracts quickly, it will drive the electrostatic friction brush 8 to continuously rub left and right on the bottom of the test platform 1 and the surface of the Mylar film. Therefore, the Mylar film can be rubbed to generate static electricity, and the electrostatic friction brush 8 will not collide with the Mylar film pressure rollers 4.

[0021] In this embodiment, as Figures 1-5 As shown, a rectangular groove is provided between the top surface of the support cylinder 2 and the test platform 1. The rectangular rod of the upper part of the pressure roller support frame 3 can slide back and forth in the rectangular groove inside the support cylinder 2 and is in close contact with the inner wall of the rectangular groove. When the pressure roller support frame 3 moves back and forth, the rectangular rod of the upper part will slide back and forth under the support of the support cylinder 2, thereby ensuring the stability of the pressure roller support frame 3 when it moves back and forth.

[0022] In this embodiment, as Figure 1 , Figure 2 and Figure 6 As shown, the lead screw 6 has two threads on its outer side, and the two threads on the outer side of the lead screw 6 are symmetrical reverse threads. Therefore, when the lead screw 6 rotates, it can rely on the outer thread to cooperate with the threaded hole in the middle of the top of the pressure roller support frame 3 to drive the two pressure roller support frames 3 to move synchronously in opposite directions.

[0023] Example 2, based on Example 1, such as Figures 1-6As shown, the outer wall of the Mylar film pressure roller 4 is covered with a layer of rubber. When the electric cylinder 7 is extended to its longest length, one side of the electrostatic friction brush plate 8 will move to the middle position of the bottom of the test platform 1. When the lead screw 6 rotates in the forward direction, its outer thread engages with the threaded hole in the middle of the top of the pressure roller support frame 3, which will drive the two pressure roller support frames 3 to slide synchronously toward the middle position of the test platform 1. Therefore, the Mylar film pressure roller 4 can roll onto the surface of the Mylar film, thus fixing the Mylar film at the bottom of the test platform 1. The rubber on the outer wall of the Mylar film pressure roller 4 can increase the friction and prevent the Mylar film from moving. When the electrostatic friction brush plate 8 is displaced, it can also ensure uniform friction on the surface of the Mylar film.

[0024] The working principle of this embodiment is as follows: During installation, the test platform 1 can be placed stably first, and the electric cylinder 7 can be connected to the external controller and power supply. When it is necessary to apply static electricity to the Mylar film and test its electrostatic adsorption performance, the handwheel on the lead screw 6 can be used to drive it to rotate in the opposite direction under the support of the lead screw support block 5. At this time, the thread on the outside of the lead screw 6 will engage with the threaded hole in the middle of the top of the pressure roller support frame 3, which will drive the two pressure roller support frames 3 to move away from the middle position of the test platform 1 simultaneously under the support of the support cylinder 2. At the same time, the two Mylar film pressure rollers 4 will also roll outward. Then, the Mylar film that needs to be applied static electricity and tested can be laid flat at the bottom middle position of the test platform 1, and the lead screw 6 can be driven to rotate in the forward direction. At this time, the thread on the outside of the lead screw 6 will engage with the threaded hole in the middle of the top of the pressure roller support frame 3, which will drive the two pressure roller support frames 3 to move away from the middle position of the test platform 1 simultaneously. Slide the Mylar film roller 4 to the center of the test platform 1, so that the Mylar film roller 4 can roll onto the surface of the Mylar film, thus fixing the Mylar film to the bottom of the test platform 1. Then, the electric cylinder 7 can be controlled by the external controller to quickly extend and retract. When the electric cylinder 7 extends and retracts quickly, it will drive the electrostatic friction brush 8 to continuously rub left and right on the bottom of the test platform 1 and the surface of the Mylar film, so that the Mylar film will generate static electricity. After the electrostatic friction brush 8 rubs the Mylar film a certain number of times, the electric cylinder 7 can be retracted to its shortest position. Then, the lead screw 6 is rotated in the opposite direction to drive the two roller support frames 3 to move away from the center of the test platform 1 again synchronously. At the same time, the Mylar film roller 4 will also detach from the Mylar film. At this time, the Mylar film will be attracted to the bottom of the test platform 1 by electrostatic attraction. Then, the performance of the Mylar film can be tested according to the attraction time.

[0025] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0026] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

Claims

1. A device for testing the electrostatic properties of Mylar film, comprising: Test bench (1); characterized in that: two sets of support cylinders (2) are welded to the top of the test bench (1), and a pressure roller support frame (3) is slidably installed on the inner side of each of the two sets of support cylinders (2), and a Mylar film pressure roller (4) is rotatably installed at the bottom of each pressure roller support frame (3); a screw support block (5) is fixed at the middle position of the top of the test bench (1), and a screw (6) is rotatably installed in the middle of the screw support block (5); an electric cylinder (7) is installed on the left and right sides of the test bench (1) through a bracket, and an electrostatic friction brush plate (8) is fixed at one end of each electric cylinder (7).

2. The electrostatic performance testing device for Mylar film according to claim 1, characterized in that, The pressure roller support frame (3) and the Mylar film pressure roller (4) are symmetrically arranged front and back, and the top outer wall of the Mylar film pressure roller (4) is in close contact with the bottom outer wall of the test platform (1).

3. The electrostatic performance testing device for Mylar film according to claim 1, characterized in that, A rectangular groove is provided between the top surface of the support cylinder (2) and the test table (1), and the rectangular rod of the upper part of the pressure roller support frame (3) can slide back and forth in the rectangular groove inside the support cylinder (2) and fit tightly against the inner wall of the rectangular groove.

4. The electrostatic performance testing device for Mylar film according to claim 1, characterized in that, The lead screw (6) has two threads on its outer side, and the two threads on the outer side of the lead screw (6) are symmetrical reverse threads.

5. The electrostatic performance testing device for Mylar film according to claim 1, characterized in that, Each of the pressure roller support frames (3) has a threaded hole at the top center, and the threaded hole at the top center of the pressure roller support frame (3) is engaged with the thread on the outside of the lead screw (6).

6. The electrostatic performance testing device for Mylar film according to claim 1, characterized in that, The bristles of the top plate of the electrostatic friction brush plate (8) are also in close contact with the bottom outer wall of the test platform (1), and after the two Mylar film pressure rollers (4) move toward the middle position of the test platform (1), the electrostatic friction brush plate (8) will be located between the two Mylar film pressure rollers (4).

7. The electrostatic performance testing device for Mylar film according to claim 1, characterized in that, The outer wall of the Mylar film pressure roller (4) is covered with a layer of rubber. When the electric cylinder (7) is extended to its longest length, one side of the electrostatic friction brush plate (8) will move to the bottom middle position of the test platform (1).

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