A pressure self-adjusting insulation film testing machine

Abstract

This invention relates to the field of battery insulation film testing technology, specifically a pressure-self-adjusting insulation film testing machine. It includes a worktable and an industrial control computer mounted on its left side. A winding rod is mounted above the industrial control computer. A support frame is mounted above the worktable, and a second chain conveyor mechanism is connected to the upper interior of the support frame via a second conveying roller. A first chain conveyor mechanism is connected to the lower interior of the support frame via a first conveying roller. An industrial camera is mounted between the two support frames. This pressure-self-adjusting insulation film testing machine uses an upper pressure plate to self-adjust and clamp local areas on the front and rear sides of the insulation film above the lower support plate. During movement, it does not interfere with the surface of the insulation film to be tested, thus facilitating the coordination of the industrial camera and light source for effective defect detection on the surface of the insulation film without affecting the accuracy of subsequent defect detection.

Description

Technical Field

[0001] This invention relates to the field of battery insulation film testing technology, specifically a pressure self-adjusting insulation film testing machine. Background Technology

[0002] Battery insulating film uses polypropylene or polyethylene as the base film, and then coats it with an inorganic ceramic particle coating. This composite structure can improve the thermal stability, mechanical strength and electrolyte wettability of the battery insulating film. Composite battery insulating film is a new type of material. After the battery insulating film is produced, if there are openings, dirt, bubbles or other defects in the insulating film, or if metal particles are attached to the insulating film, it may cause direct electrical contact between the positive and negative electrodes of the battery, which may lead to safety issues. Therefore, it is necessary to use a testing machine to detect defects on the surface of the insulating film.

[0003] For example, the prior art patent with publication number "CN217766029U" entitled "An Insulating Film Detection Device" discloses that the electrical parameter measuring instrument can include a resistance measuring device. When an insulating film exists in the transport space between the first conductive part and the second conductive part, and the insulating film has no defects such as perforations, the resistance between the first conductive part and the second conductive part can have a high value. When there are perforations in the insulating film, or when the insulating film contains metal particles, the first conductive part and the second conductive part are conductive, and the resistance between them has a low value. Therefore, based on the resistance value measured by the resistance measuring device, it is possible to detect whether the insulating film has defects such as perforations or metal particle inclusions. Another example is the prior art patent with publication number "CN221224598U". The patent, titled "A Visual Inspection System for Defects in Lithium-ion Battery Separator Film," discloses a method in which a winding mechanism winds up the separator film, passing it over a light panel. The light panel illuminates the separator film, and if small bright spots or dark areas appear on the top of the film, it indicates damage or adhesion of other substances in that area. The data collected by a recording camera is transmitted to a terminal, which then analyzes the condition of the separator film. To ensure the separator film is parallel to the light panel, the winding mechanism includes four bearing seats arranged in pairs on either side of a support frame. A pressure roller is rotatably connected between opposite sides of one set of bearing seats, and the two pressure rollers are arranged in parallel to keep the separator film parallel to the light panel.

[0004] The existing insulating film inspection machine described above guides and levels the insulating film using two parallel pressure rollers, ensuring the film moves parallel to the rollers. It cannot move the insulating film via a pressure-self-adjusting clamping side. This causes the surface of the insulating film to directly contact one of the pressure rollers during movement. If the surface of the insulating film has metal particles or other impurities, these impurities may adhere to the surface of one of the pressure rollers. This not only affects the accuracy of subsequent defect detection but also damages the insulating film due to the adhering impurities, further impacting subsequent inspection work. Therefore, we propose a pressure-self-adjusting insulating film inspection machine to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure-self-adjusting insulation film inspection machine to solve the problem mentioned in the background art. Currently, existing insulation film inspection machines on the market guide and level the insulating film using two parallel pressure rollers, ensuring the film moves parallel to the rollers. They do not utilize a pressure-self-adjusting clamping side to move the insulating film. This results in the upper surface of the insulating film being inspected directly contacting one of the pressure rollers during movement. If the upper surface of the insulating film has metal particles or other impurities, these impurities may adhere to the surface of one of the pressure rollers. This not only affects the accuracy of subsequent defect detection but also damages the insulating film caused by the impurities adhering to the surface of one of the pressure rollers, further impacting subsequent inspection work.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressure self-adjusting insulating film testing machine, comprising a workbench and an industrial control computer installed on its left side, with a winding rod installed above the industrial control computer. A support frame is installed above the workbench, and a second chain plate conveying mechanism is connected to the upper interior of the support frame via a second conveying roller. A first chain plate conveying mechanism is connected to the lower interior of the support frame via a first conveying roller. Lower support plates are installed at equal intervals on the outer side of the first chain plate conveying mechanism. Upper pressure plates are installed at equal intervals on the outer side of the second chain plate conveying mechanism via fixed plates. An adjustment plate is installed on the inner side of the upper surface of the support frame. An industrial camera is installed between the two support frames, and a light source is connected to the inner side of the support frame.

[0007] Preferably, the outer ends of the front and rear ends of the first conveying roller inside the right side of the support frame are connected to the lower ends of the two second conveying rollers through a bevel gear set, and the ratio of the number of the first conveying roller to the number of the second conveying roller is 1:2.

[0008] Preferably, the control plate is semi-circular, and both its left and right sides are inclined surfaces, and the length of the control plate is less than the length of the first chain conveyor mechanism.

[0009] Preferably, the upper pressure plate is L-shaped, and a vertical rod is installed in the groove of the vertical surface of the upper pressure plate. A reset spring is nested on the upper outer side of the vertical rod, and the lower part of the vertical rod is connected through the fixing plate.

[0010] Preferably, rolling columns are symmetrically installed above the vertical surface of the upper pressure plate, and the rolling columns are in close contact with the bottom surface of the control plate. The upper pressure plate forms a lifting structure through the control plate.

[0011] Preferably, the light source is tilted, and the highest point of the light source is lower than the highest point of the lower support plate.

[0012] Preferably, a protruding rod is installed on one side of the upper pressure plate near the fixed plate, and the protruding rod is located below the fixed plate, and the length of the fixed plate is greater than the length of the protruding rod.

[0013] Preferably, two sets of vertical frames are symmetrically installed on the upper right side of the workbench. The vertical frames have slots inside for installing guide rods, and a connecting spring is nested on the lower outer side of the guide rods.

[0014] Preferably, a support rod is provided between the two sets of vertical frames, and a guide rod is provided through the front and rear ends of the support rod. A push roller is installed above the support rod, and the highest point of the push roller in the initial state is on the same horizontal plane as the highest point of the lower support plate.

[0015] Preferably, rotating rods are symmetrically installed on the inner right side of the support frame, and a diagonal rod is fixed through the outer side of the rotating rod. A spiral spring is nested and connected to the outer side of the rotating rod near the support frame. A support rod is attached to the upper right end of the diagonal rod. The support rod forms a lifting structure through the diagonal rod. A protruding rod is provided on the upper left side of the diagonal rod. The diagonal rod forms a rotating structure through the protruding rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This pressure self-adjusting insulation film inspection machine uses an upper pressure plate to self-adjust the pressure of local areas on the front and rear sides of the insulation film above the lower support plate. During movement, it does not interfere with the upper surface of the insulation film to be inspected. Therefore, it facilitates the coordination of an industrial camera and light source to effectively detect defects on the upper surface of the insulation film, without affecting the accuracy of subsequent defect detection. The specific details are as follows:

[0017] (1) By setting the control plates that are inclined on both the left and right sides, when the upper pressure plate moves to the lower pressure plate, the control plate automatically applies a downward pressure to the upper pressure plate, which in turn causes the upper pressure plate to self-clamp the local area of ​​the front and rear sides of the insulating film above the lower support plate. At the same time, the upper pressure plate is moved by the second chain plate conveying mechanism, and the lower support plate is moved by the first chain plate conveying mechanism. The upper pressure plate and the lower support plate cooperate to move the insulating film. During the movement, the upper surface of the insulating film to be tested will not be disturbed. Therefore, it is convenient for the industrial camera and the light source to cooperate well to perform defect detection on the upper surface of the insulating film to be tested, without affecting the accuracy of subsequent defect detection, and without damaging new materials such as battery insulating film.

[0018] Furthermore, when the upper pressure plate moves to separate from the control plate, the stored force of the reset spring automatically drives the upper pressure plate to move upward and reset, thus automatically releasing the clamping pressure on the insulating film without the need for an additional power source, resulting in a simple structure.

[0019] (2) When the upper pressure plate moves to the bottom of the control plate, the upper pressure plate drives the convex rod to move downward. The convex rod applies a downward thrust to the inclined rod, which in turn causes the inclined rod to rotate around the rotating rod. This causes the right side of the inclined rod to apply an upward thrust to the support rod, which causes the support rod to drive the push roller to move upward and push the insulating film upward to straighten it. Therefore, the horizontality of the insulating film during the conveying and testing can be further improved, and the accuracy of the subsequent defect detection can be further improved. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the right-side structure of the present invention;

[0022] Figure 3 This is a schematic cross-sectional view of the support frame structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the upper pressure plate of the present invention;

[0024] Figure 5 This is a bottom view schematic diagram of the first chain plate conveying mechanism of the present invention;

[0025] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This is a cross-sectional view of the connection between the support frame and the first conveying roller of the present invention.

[0027] Figure 8 This is a schematic diagram of the right-side structure of the support frame of the present invention;

[0028] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B;

[0029] Figure 10 This is a schematic diagram of the control plate structure from below in this invention.

[0030] In the diagram: 1. Workbench; 2. Support frame; 3. First chain conveyor mechanism; 4. Second chain conveyor mechanism; 5. Industrial camera; 6. Light source; 7. Control plate; 8. Rewinding rod; 9. Industrial computer; 10. First conveyor roller; 11. Inclined rod; 111. Rotating rod; 112. Spiral spring; 12. Vertical frame; 121. Guide rod; 122. Connecting spring; 13. Push roller; 14. Second conveyor roller; 15. Lower support plate; 16. Upper pressure plate; 161. Rolling column; 162. Vertical rod; 163. Return spring; 17. Fixed plate; 18. Protruding rod; 19. Support rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-10 The present invention provides the following technical solution:

[0033] Example 1: In this example, the pressure-self-adjusting insulation film inspection machine moves the insulation film by means of a pressure-self-adjusting clamping side during the conveying and inspection process. This prevents interference with the surface of the insulation film being inspected, thus ensuring the accuracy of subsequent defect detection and preventing damage to the insulation film. See attached diagram for the specific structure. Figures 1-6 and appendix Figure 10As shown, the system includes a workbench 1 and an industrial control computer 9 mounted on its left side. A winding rod 8 is mounted above the industrial control computer 9. A support frame 2 is mounted above the workbench 1. A second chain conveyor mechanism 4 is connected to the upper interior of the support frame 2 via a second conveyor roller 14. A first chain conveyor mechanism 3 is connected to the lower interior of the support frame 2 via a first conveyor roller 10. Lower support plates 15 are installed at equal intervals on the outer side of the first chain conveyor mechanism 3. Upper pressure plates 16 are installed at equal intervals on the outer side of the second chain conveyor mechanism 4 via a fixing plate 17. An adjustment plate 7 is mounted on the inner side of the upper surface of the support frame 2. An industrial camera 5 is mounted between the two support frames 2. A light source 6 is connected to the inner side of the support frame 2. The outer sides of the front and rear ends of the first conveyor roller 10 on the right side of the support frame 2 are connected via bevel gear sets. The first conveyor roller 10 is connected to the lower end of the two second conveyor rollers 14, and the ratio of the number of the first conveyor roller 10 to the number of the second conveyor roller 14 is 1:2. The control plate 7 is semi-circular, and both the left and right sides of the control plate 7 are inclined. The length of the control plate 7 is less than the length of the first chain plate conveying mechanism 3. The upper pressure plate 16 is L-shaped, and a vertical rod 162 is installed in the groove of the vertical surface of the upper pressure plate 16. A reset spring 163 is nested on the upper outer side of the vertical rod 162, and the lower part of the vertical rod 162 is connected to the fixed plate 17. Rolling columns 161 are symmetrically installed on the upper vertical surface of the upper pressure plate 16. The rolling columns 161 are in contact with the bottom surface of the control plate 7. The upper pressure plate 16 forms a lifting structure through the control plate 7. The light source 6 is inclined, and the highest point of the light source 6 is lower than the highest point of the lower support plate 15.

[0034] First, place one end of the processed insulating film onto the rightmost lower support plate 15 above the first chain conveyor mechanism 3. Then, connect one end of the first conveyor roller 10 to an external motor via a coupling. The motor drives the first conveyor roller 10 to rotate. As the first conveyor roller 10 rotates, it drives the first chain conveyor mechanism 3 to the left for conveying operations. Simultaneously, the rotation of the first conveyor roller 10 drives the two second conveyor rollers 14 to rotate via a bevel gear set, causing the two second conveyor rollers 14 to drive the two second chain conveyor mechanisms 4. The conveying operation proceeds from the inside to the left. When the upper pressure plate 16, installed on the far right side of the second chain conveyor mechanism 4, moves and contacts the inclined surface of the control plate 7, the rolling column 161 contacts the inclined surface of the control plate 7, reducing friction. When the upper pressure plate 16 moves directly below the control plate 7, the control plate 7 automatically applies a downward pressure to the upper pressure plate 16. Then, the upper pressure plate 16 drives the vertical rod 162 to move downward. At this time, the vertical rod 162 moves downward within the fixed plate 17. The return spring 163 is compressed and stores force, and then moves downward. The upper pressure plate 16 applies self-regulating pressure to local areas on the front and rear sides of the insulating film on the corresponding lower support plate 15. Rubber pads are installed on the lower surface of the upper pressure plate 16 and the upper surface of the lower support plate 15. Then, the first chain conveyor mechanism 3 continues to move the lower support plate 15, and the second chain conveyor mechanism 4 continues to move the upper pressure plate 16. As shown above, this allows another set of upper pressure plates 16 and lower support plates 15 to cooperate in applying self-regulating pressure to local areas on the front and rear sides of the insulating film, thus effectively water-pressing the insulating film. The film is conveyed horizontally to the left. At this time, the tilted light source 6 illuminates the lower surface of the insulating film at an angle upwards. Simultaneously, the industrial camera 5 takes pictures and records videos of the insulating film below. The industrial camera 5 transmits the collected data to the industrial control computer 9. The industrial control computer 9 analyzes and compares the data. When a small bright spot appears on the upper part of the insulating film, it indicates that there is an opening. When the upper part of the insulating film is dark, it indicates that there are impurities. Therefore, it can effectively detect defects on the surface of the insulating film. Since this part is existing technology, it will not be described in detail here.

[0035] When the upper pressure plate 16 moves to the left side of the control plate 7, the stored force of the reset spring 163 automatically drives the upper pressure plate 16 to move upward, so that the upper pressure plate 16 automatically releases the clamping pressure on the insulating film. Therefore, the pressure applied to the insulating film and the pressure released can be automatically controlled. This operation is repeated to facilitate the inspection of the insulating film being transported to the left. Then, the inspected insulating film is wound up and placed by the winding rod 8.

[0036] Example 2: The pressure self-adjusting insulation film testing machine in this example, based on Example 1, can further improve the horizontality of the insulation film during transport and testing, and further improve the accuracy of subsequent defect detection. For specific structure, please refer to the attached diagram. Figures 7-9As shown, a protruding rod 18 is installed on the side of the upper pressure plate 16 near the fixed plate 17, and the protruding rod 18 is located below the fixed plate 17. The length of the fixed plate 17 is greater than the length of the protruding rod 18. Two sets of vertical frames 12 are symmetrically installed on the upper right side of the workbench 1. Guide rods 121 are installed in the slots inside the vertical frames 12, and connecting springs 122 are nested on the lower outer side of the guide rods 121. A support rod 19 is provided between the two sets of vertical frames 12, and guide rods 121 are provided through the front and rear ends of the support rod 19. A push rod is installed on the top of the support rod 19. The highest point of the moving roller 13 in its initial state is on the same horizontal plane as the highest point of the lower support plate 15. A rotating rod 111 is symmetrically installed on the inner right side of the support frame 2, and an inclined rod 11 is fixed through the outer side of the rotating rod 111. A spiral spring 112 is nested on the outer side of the end of the rotating rod 111 near the support frame 2. A support rod 19 is attached to the upper right end of the inclined rod 11. The support rod 19 forms a lifting structure through the inclined rod 11. A protruding rod 18 is provided on the upper left side of the inclined rod 11. The inclined rod 11 forms a rotating structure through the protruding rod 18.

[0037] When the upper pressure plate 16 installed on the far right of the second chain conveyor mechanism 4 moves and contacts the inclined surface of the control plate 7, the upper pressure plate 16 drives the convex rod 18 to move downward and to the left at the same time. At this time, the convex rod 18 pushes the left side of the inclined rod 11 downward, so that the inclined rod 11 rotates around the rotating rod 111 as the center. At this time, the spiral spring 112 stores force, and then the right side of the inclined rod 11 rotates upward, so that the right side of the inclined rod 11 pushes the support rod 19 upward. At this time, the support rod 19 moves upward outside the guide rod 121, connecting the spring 1 When 22 is pulled and stored, the support rod 19 drives the push roller 13 to move upward, so that the push roller 13 pushes and straightens the upper insulating film. Then, the upper pressure plate 16 and the lower support plate 15 cooperate to self-clamp the local areas on the front and rear sides of the straightened insulating film. Therefore, this operation is repeated so that the insulating film between the two sets of upper pressure plates 16 and lower support plates 15 after clamping is in a horizontal state, which further improves the horizontality of the insulating film during conveying and testing, and can further improve the accuracy of subsequent defect detection, thereby completing a series of tasks.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure self-adjusting insulating film testing machine, comprising a workbench (1) and an industrial control computer (9) installed on its left side, wherein a winding rod (8) is installed above the industrial control computer (9), characterized in that: A support frame (2) is installed above the workbench (1), and a second chain conveyor mechanism (4) is connected to the upper interior of the support frame (2) via a second conveyor roller (14). A first chain conveyor mechanism (3) is connected to the lower interior of the support frame (2) via a first conveyor roller (10). Lower support plates (15) are installed at equal intervals on the outer side of the first chain conveyor mechanism (3). Upper pressure plates (16) are installed at equal intervals on the outer side of the second chain conveyor mechanism (4) via a fixing plate (17). An adjustment plate (7) is installed on the inner side of the upper surface of the support frame (2). An industrial camera (5) is installed between the two support frames (2). A light source (6) is connected to the inner side of the support frame (2). The adjustment plate (7) is semi-circular, and both its left and right sides are inclined. The length of the control plate (7) is less than the length of the first chain conveyor mechanism (3). The upper pressure plate (16) is set in an "L" shape. A vertical rod (162) is installed in the groove of the vertical surface of the upper pressure plate (16). A reset spring (163) is nested on the upper outer side of the vertical rod (162). The lower part of the vertical rod (162) is connected through the fixed plate (17). Rolling columns (161) are symmetrically installed on the upper surface of the vertical surface of the upper pressure plate (16). The rolling columns (161) are in close contact with the bottom surface of the control plate (7). The upper pressure plate (16) forms a lifting structure through the control plate (7). A protruding rod (18) is installed on the side of the upper pressure plate (16) close to the fixed plate (17). The protruding rod (18) is located below the fixed plate (17). The length of the fixed plate (17) is greater than the length of the protruding rod (18).

2. The pressure self-adjusting insulating film testing machine according to claim 1, characterized in that: The front and rear ends of the first conveying roller (10) inside the right side of the support frame (2) are connected to the lower ends of the two second conveying rollers (14) through a bevel gear set, and the ratio of the number of the first conveying roller (10) to the number of the second conveying rollers (14) is 1:

2.

3. The pressure self-adjusting insulating film testing machine according to claim 1, characterized in that: The light source (6) is tilted, and the highest point of the light source (6) is lower than the highest point of the lower support plate (15).

4. The pressure self-adjusting insulating film testing machine according to claim 1, characterized in that: Two sets of vertical frames (12) are symmetrically installed on the upper right side of the workbench (1). The vertical frames (12) have slots inside for installing guide rods (121), and a connecting spring (122) is nested on the lower outer side of the guide rods (121).

5. A pressure self-adjusting insulating film testing machine according to claim 4, characterized in that: A support rod (19) is provided between the two sets of vertical frames (12), and a guide rod (121) is provided through the front and rear ends of the support rod (19). A push roller (13) is installed above the support rod (19). The highest point of the push roller (13) in the initial state is on the same horizontal plane as the highest point of the lower support plate (15).

6. The pressure self-adjusting insulating film testing machine according to claim 5, characterized in that: A rotating rod (111) is symmetrically installed on the inner right side of the support frame (2), and a diagonal rod (11) is fixed through the outer side of the rotating rod (111). A spiral spring (112) is nested on the outer side of the end of the rotating rod (111) near the support frame (2). A support rod (19) is attached to the upper right end of the diagonal rod (11). The support rod (19) forms a lifting structure through the diagonal rod (11). A protruding rod (18) is provided on the upper left side of the diagonal rod (11). The diagonal rod (11) forms a rotating structure through the protruding rod (18).

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