Automobile capacitor BOPP film surface defect detection device

Abstract

The utility model relates to an automobile capacitor BOPP (biaxially-oriented polypropylene) film surface defect detection device, which comprises a base, a movable frame positioned above the base and a plurality of groups of detection components arranged at the bottom of the movable frame, the movable frame can move towards the axial direction of the base, and each detection component comprises a connecting piece, an elastic piece and a dyne pen, the connecting piece is connected to the bottom of the movable frame, the top end of the elastic piece is arranged on the connecting piece, the dyne pen is arranged at the bottom end of the elastic piece, and the bottom end of the dyne pen abuts against the surface of the film located on the base through the elastic piece. The dyne pen can always keep tight and stable contact with the surface of a film in the detection process, so that dyne liquid is effectively and uniformly coated on the film, and the accuracy and the stability of a detection result are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of thin film surface quality detection technology, and in particular to a device for detecting surface defects in BOPP thin films for automotive capacitors. Background Technology

[0002] In existing technologies, the dyne solution coating method is generally used to detect the surface energy of BOPP films. By coating the film surface with a dyne solution of a certain value, it is observed whether the solution can form a continuous trail on the film surface or whether it breaks, thereby determining the surface energy value of the film.

[0003] Application number CN202122377578.7 discloses a rapid surface energy testing platform for BOPP film. The rapid surface energy testing platform for BOPP film includes a platform for fixing the BOPP film to be tested, and a gradient coating rack that can slide horizontally along the platform and is fixed with multiple dyne pens with different dyne values.

[0004] However, the dyne pen in the aforementioned device has significant limitations when inspecting films. In actual operation, the dyne pen on this platform struggles to provide stable and continuous downward pressure, causing the pen tip to fail to maintain tight contact with the film surface. This results in the dyne solution not being evenly applied to the film surface, severely impacting the accuracy and stability of the test results and failing to meet the high-quality inspection requirements for BOPP films in automotive capacitor manufacturing. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a device for detecting surface defects in BOPP film for automotive capacitors. The specific technical solution is as follows:

[0006] A device for detecting surface defects of BOPP film in automotive capacitors includes a base, a movable frame located above the base, and multiple sets of detection components arranged at the bottom of the movable frame. The movable frame is axially movable toward the base. Each detection component includes a connector, an elastic element, and a dyne pen. The connector is connected to the bottom of the movable frame, the top end of the elastic element is located on the connector, and the dyne pen is located at the bottom end of the elastic element. The elastic element causes the bottom end of the dyne pen to contact the film surface located on the base.

[0007] As an improvement to the above technical solution: the connecting member includes a second nut sleeve fixedly connected to the bottom of the movable frame, the elastic member includes a spring and a second threaded rod, the spring is sleeved on the surface of the second threaded rod, and the top end of the second threaded rod is threadedly connected to the second nut sleeve.

[0008] As an improvement to the above technical solution: a first screw is installed on the top of the dyne pen, and a first nut sleeve that is adapted to the first screw is at the bottom of the second threaded rod.

[0009] As an improvement to the above technical solution, it also includes a moving component for driving the movable frame to move axially toward the base. The moving component includes a second electric telescopic rod and a movable frame. The second electric telescopic rod is mounted on the base, and the output rod of the second electric telescopic rod is connected to the movable frame.

[0010] As an improvement to the above technical solution: the bottom end of the movable frame has a slider, the top of the base is provided with a groove, and the slider is slidably connected in the groove.

[0011] As an improvement to the above technical solution, it also includes a pulling component for pulling the dyne pen vertically. The outer surface of the dyne pen has a fixed ring block. The pulling component includes a first electric telescopic rod, a pull column, and a pull plate. The pull plate is provided with a plurality of guide holes adapted to the dyne pen. The pull plate is sleeved on the outer surface of the dyne pen through the guide holes, and the pull plate is located below the fixed ring block. The first electric telescopic rod is installed on a movable frame. The output rod of the first electric telescopic rod is connected to the pull column. The bottom end of the pull column movably passes through the movable frame and is fixedly connected to the pull plate.

[0012] As an improvement to the above technical solution, it also includes a fastening part for clamping the film. The fastening part includes a fixed mounting frame, a third electric telescopic rod, and a clamping plate. The fixed mounting frame is installed on the top of the base, the third electric telescopic rod is installed on the fixed mounting frame, and the clamping plate is connected to the output rod of the third electric telescopic rod.

[0013] The beneficial effects of this utility model are:

[0014] The elastic element ensures that the dyne pen maintains a close and stable contact with the film surface during the testing process, effectively guaranteeing that the dyne solution is evenly applied to the film, greatly improving the accuracy and stability of the test results.

[0015] With adjustable pressure settings, the device can flexibly adapt to the testing needs of different types and thicknesses of BOPP films, enhancing its versatility.

[0016] Furthermore, the coordinated operation of the moving components, pulling components, and fastening parts not only facilitates the testing operation and improves testing efficiency, but also further ensures the reliability of the testing process, providing strong technical support for the quality testing of BOPP film in automotive capacitor production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure between the pull plate and the detection component in this utility model.

[0020] Reference numerals: 1. Base; 2. Detection component; 21. Dyne pen; 22. Fixing ring block; 23. First screw; 24. First nut sleeve; 25. Second threaded rod; 26. Spring; 27. Second nut sleeve; 3. Pull plate; 30. Guide hole; 4. Movable frame; 41. Slider; 5. First electric telescopic rod; 6. Pull column; 7. Second electric telescopic rod; 8. Slide groove; 9. Fixed mounting bracket; 91. Third electric telescopic rod; 92. Clamping plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Example

[0023] Please refer to Figures 1-3 The automotive capacitor BOPP film surface defect detection device provided by this utility model mainly includes the following key components:

[0024] The device includes a base 1 and a movable frame 4 located above the base 1. The base 1 provides a stable support foundation for the entire device, and the movable frame 4 can move along the axial direction of the base 1. A slider 41 is provided at the bottom of the movable frame 4, and correspondingly, a groove 8 is provided at the top of the base 1. The slider 41 and the groove 8 are slidably connected. This connection method ensures that the movable frame 4 can move smoothly on the base 1 and provides precise guidance for the movement of the movable frame 4, ensuring the positional accuracy of the detection component 2 during the detection process.

[0025] Multiple sets of detection components 2 are arranged at the bottom of the movable frame 4. Each detection component 2 includes a connector, an elastic element, and a dyne pen 21. The connector is used to fix the detection component 2 to the movable frame 4, specifically a second nut sleeve 27 fixedly connected to the bottom of the movable frame 4. The elastic element consists of a spring 26 and a second threaded rod 25. The spring 26 is sleeved on the surface of the second threaded rod 25, and the top end of the second threaded rod 25 is threaded into the second nut sleeve 27.

[0026] A first screw 23 is mounted on the top of the dyne pen 21, and a first nut sleeve 24, which is adapted to the first screw 23, is provided at the bottom of the second threaded rod 25. By rotating the second threaded rod 25, its top end can rotate in the second nut sleeve 27, thereby changing the distance between the bottom of the second threaded rod 25 and the second nut sleeve 27, thus adjusting the compression degree of the spring 26, achieving precise adjustment of the spring force value of the spring 26, and ultimately changing the pressure value of the dyne pen 21 in contact with the film.

[0027] Meanwhile, by utilizing the cooperation between the first screw 23 and the first nut sleeve 24, it is not only convenient to install the dyne pen 21 onto the detection component 2, but also to further fine-tune the distance between the dyne pen 21 and the film, thereby more accurately adjusting the contact pressure of the dyne pen tip on the film to adapt to the detection requirements of different BOPP films.

[0028] This application is equipped with a moving assembly for driving the movable frame 4 to move axially toward the base 1. The moving assembly mainly consists of a second electric telescopic rod 7. The second electric telescopic rod 7 is mounted on the base 1, and its output rod is directly connected to the movable frame 4. By controlling the extension and retraction of the second electric telescopic rod 7, the movable frame 4 can be precisely driven to move on the base 1 according to a set path and speed, ensuring that the detection assembly 2 performs comprehensive and uniform detection on the film surface.

[0029] This application also includes a pulling assembly for vertically moving the dyne pen 21. A fixing ring block 22 is fixed to the outer surface of the dyne pen 21. The pulling assembly includes a first electric telescopic rod 5, a pull post 6, and a pull plate 3. The pull plate 3 has several guide holes 30 machined on it to fit the dyne pen 21. The pull plate 3 is fitted onto the outer surface of the dyne pen 21 through these guide holes 30, and is located below the fixing ring block 22. The first electric telescopic rod 5 is mounted on a movable frame 4, and its output rod is connected to the pull post 6. The bottom end of the pull post 6 movably passes through the movable frame 4 and is firmly fixed to the pull plate 3.

[0030] When the device is not in use, the first electric telescopic rod 5 is activated to pull the pull plate 3 upward. At this time, the pull plate 3 drives the dyne pen 21 to move upward through the guide hole 30, so that the multiple dyne pens 21 are moved away from the detection component 2, thus avoiding damage to the tips of the dyne pens 21.

[0031] When using the device, control the first electric telescopic rod 5 to move the pull plate 3 downward, release the limiting effect of the pull plate 3 on the dyne pen 21, so that the dyne pen 21 can smoothly contact the film surface for detection.

[0032] To ensure the stability of the film during testing, the device also includes a clamping mechanism for holding the film in place. This clamping mechanism comprises a fixed mounting bracket 9, a third electrically operated telescopic rod 91, and a clamping plate. The fixed mounting bracket 9 is securely mounted on top of the base 1, the third electrically operated telescopic rod 91 is mounted on the fixed mounting bracket 9, and the clamping plate is connected to the output rod of the third electrically operated telescopic rod 91. Before testing, the third electrically operated telescopic rod 91 is activated, causing its output rod to lower the clamping plate, tightly clamping the BOPP film placed on the base 1 to prevent displacement of the film during testing, thereby ensuring the accuracy of the test results.

[0033] Specifically, when testing the film, first, place the device on a stable workbench, ensuring that base 1 is placed securely. Then, place the BOPP film to be tested flat on base 1.

[0034] The third electric telescopic rod 91 is activated. The third electric telescopic rod 91 is mounted on the fixed mounting bracket 9, which is fixed to the top of the base 1. The output rod of the third electric telescopic rod 91 drives the clamping plate 92 to descend. The clamping plate 92 cooperates with the base 1 to tightly clamp the film, thus completing the film fixation.

[0035] The pressure of the detection component 2 is adjusted according to the characteristics of the film to be tested. The second threaded rod 25 is rotated, and the top end of the second threaded rod 25 is threaded into the second nut sleeve 27 at the bottom of the movable frame 4. The spring 26 is sleeved on the second threaded rod 25.

[0036] By rotating the second threaded rod 25, the distance between it and the second nut sleeve 27 is changed, thereby adjusting the elastic force of the spring 26 and achieving the purpose of adjusting the contact pressure of the dyne pen 21 on the film. If more precise adjustment is required, the distance between the dyne pen 21 and the film can be finely adjusted by cooperating the first screw 23 with the first nut sleeve 24 to further optimize the contact pressure.

[0037] After adjustment, the first electric telescopic rod 5 is activated. The first electric telescopic rod 5 is installed on the movable frame 4. The output rod of the first electric telescopic rod 5 drives the pull column 6 to move downward. The bottom end of the pull column 6 passes through the movable frame 4 and is fixedly connected to the pull plate 3. The pull plate 3 is fitted onto the dyne pen 21 through the guide hole 30 and is located below the fixed ring block 22. The pull plate 3 descends, releasing the restriction on the dyne pen 21.

[0038] Finally, the second electric telescopic rod 7 is activated. The second electric telescopic rod 7 is mounted on the base 1, and its output rod is connected to the movable frame 4. The second electric telescopic rod 7 drives the movable frame 4 to move axially along the base 1. The slider 41 at the bottom of the movable frame 4 slides in the groove 8 at the top of the base 1, ensuring smooth movement of the movable frame 4. At this time, the dyne pen 21 in the detection assembly 2 moves on the thin film surface to perform surface energy detection.

[0039] After the test is completed, reverse the above steps. First, activate the first electric telescopic rod 5 to pull the pull plate 3 upward, moving the dyne pen 21 away from the film and protecting the tip of the dyne pen 21. Then, release the third electric telescopic rod 91, causing the clamping plate 92 to rise, releasing the clamping of the film, and remove the tested film.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting surface defects of BOPP film in automotive capacitors, characterized in that, The device includes a base (1), a movable frame (4) located above the base (1), and multiple sets of detection components (2) arranged at the bottom of the movable frame (4). The movable frame (4) can move axially toward the base (1). The detection component (2) includes a connector, an elastic element, and a dyne pen (21). The connector is connected to the bottom of the movable frame (4). The top end of the elastic element is located on the connector. The dyne pen (21) is located at the bottom end of the elastic element. The elastic element is used to make the bottom end of the dyne pen (21) contact the film surface located on the base (1).

2. The device for detecting surface defects of BOPP film in automotive capacitors according to claim 1, characterized in that: The connector includes a second nut sleeve (27) fixedly connected to the bottom of the movable frame (4), and the elastic element includes a spring (26) and a second threaded rod (25). The spring (26) is sleeved on the surface of the second threaded rod (25), and the top end of the second threaded rod (25) is threadedly connected to the second nut sleeve (27).

3. The device for detecting surface defects of BOPP film in automotive capacitors according to claim 2, characterized in that: The top of the dyne pen (21) is fitted with a first screw (23), and the bottom of the second threaded rod (25) has a first nut sleeve (24) that is adapted to the first screw (23).

4. The device for detecting surface defects of BOPP film in automotive capacitors according to claim 3, characterized in that: It also includes a moving component for driving the movable frame (4) to move axially toward the base (1), the moving component including a second electric telescopic rod (7), the second electric telescopic rod (7) is mounted on the base (1), and the output rod of the second electric telescopic rod (7) is connected to the movable frame (4).

5. The device for detecting surface defects of BOPP film in automotive capacitors according to claim 1, characterized in that: The bottom of the movable frame (4) has a slider (41), and the top of the base (1) is provided with a groove (8). The slider (41) is slidably connected in the groove (8).

6. The device for detecting surface defects of BOPP film in automotive capacitors according to claim 5, characterized in that: It also includes a pulling assembly for pulling the dyne pen (21) vertically. The outer surface of the dyne pen (21) has a fixed ring block (22). The pulling assembly includes a first electric telescopic rod (5), a pull column (6) and a pull plate (3). The pull plate (3) is provided with a plurality of guide holes (30) that are adapted to the dyne pen (21). The pull plate (3) is sleeved on the outer surface of the dyne pen (21) through the guide holes (30) and the pull plate (3) is located below the fixed ring block (22). The first electric telescopic rod (5) is installed on the movable frame (4). The output rod of the first electric telescopic rod (5) is connected to the pull column (6). The bottom end of the pull column (6) passes through the movable frame (4) and is fixedly connected to the pull plate (3).

7. The device for detecting surface defects of BOPP film in automotive capacitors according to claim 6, characterized in that: It also includes a fastening part for clamping the film, the fastening part including a fixed mounting bracket (9), a third electric telescopic rod (91) and a clamping plate (92), the fixed mounting bracket (9) is mounted on the top of the base (1), the third electric telescopic rod (91) is mounted on the fixed mounting bracket (9), and the clamping plate (92) is connected to the output rod of the third electric telescopic rod (91).

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