Battery blue film unwinding tension control mechanism
By designing a tension control mechanism for the unwinding of the battery blue film, and using tension components and sensors to adjust the tension, the problem of improper tension control during the unwinding process of the battery blue film was solved, thereby improving the production qualification rate and cell quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI JEE AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, improper tension control during the unwinding process of the battery blue film can cause stress inside the blue film, affecting the appearance quality and insulation performance of the battery cell. Excessive tension can cause defects, while insufficient tension can prevent the unwinding action and affect subsequent work.
A battery blue film unwinding tension control mechanism was designed. By setting tension components No. 1 and No. 2 to adjust the positions of the release paper buffer roller and the blue film buffer roller respectively, and combining tension sensors and pressure regulating valves, the tension during the unwinding and wrapping process can be adjusted. Servo motors and cylinders are used to control the movement of the tension components to ensure an appropriate tension range.
The stress distribution of the blue film has been optimized, improving the production qualification rate and enabling it to accommodate more sizes of blue film products, ensuring the stability and quality of the unwinding and wrapping processes.
Smart Images
Figure CN224172145U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery production technology, and specifically relates to a battery blue film unwinding tension control mechanism. Background Technology
[0002] In the lithium battery industry, cell casing coating is crucial, directly determining the cell's appearance quality and insulation performance. The coating process is achieved through the coordinated action of the coating and unwinding mechanisms. The blue film applied to the battery surface has an adhesive layer, requiring a certain force to separate it from the roll; this action is called unwinding. Excessive unwinding tension can create stress within the blue film, leaving defects during coating; insufficient tension prevents unwinding, affecting subsequent processes.
[0003] Therefore, there is an urgent need for a battery blue film unwinding tension control mechanism that can adjust the tension level. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes a battery blue film unwinding tension control mechanism, comprising a control module, a frame, an unwinding assembly, a release paper take-up assembly, a release paper buffer roller, and a blue film buffer roller; the release paper take-up assembly, the release paper buffer roller, the unwinding assembly, and the blue film buffer roller are sequentially arranged on the frame;
[0005] The release paper buffer roller is equipped with a No. 1 tension component; the blue film buffer roller is equipped with a No. 2 tension component; the tension is adjusted by adjusting the corresponding positions of the release paper buffer roller and the blue film buffer roller respectively.
[0006] Guide roller assemblies are provided on both sides of the blue film buffer roller, and the guide roller assemblies are mounted on the frame.
[0007] Furthermore, the No. 1 tension assembly includes a No. 1 buffer assembly, a No. 1 connecting plate, and a No. 1 cylinder; the No. 1 buffer assembly is slidably mounted on the frame, one end of the No. 1 buffer assembly is connected to the release paper buffer roller, and the other end of the No. 1 buffer assembly is connected to the No. 1 connecting plate; the fixed end of the No. 1 cylinder is mounted on the frame, the output end of the No. 1 cylinder is connected to the No. 1 connecting plate, and the air port on the No. 1 cylinder is connected to the No. 1 pressure regulating valve.
[0008] Furthermore, the second tension assembly includes a second buffer assembly, a second connecting plate, and a second cylinder; the second buffer assembly is slidably mounted on the frame, one end of the second buffer assembly is connected to the blue film buffer roller, and the other end of the second buffer assembly is connected to the second connecting plate; the fixed end of the second cylinder is mounted on the frame, the output end of the second cylinder is connected to the second connecting plate, and the air port on the second cylinder is connected to the second pressure regulating valve.
[0009] Furthermore, the guide roller assembly includes a first guide roller, a second guide roller, a third guide roller, a fourth guide roller, a fifth guide roller, and a sixth guide roller arranged sequentially; the first guide roller, the second guide roller, and the third guide roller are arranged on one side of the blue film buffer roller; the fourth guide roller, the fifth guide roller, and the sixth guide roller are arranged on the other side of the blue film buffer roller.
[0010] Furthermore, a tension sensor is installed on the fifth guide roller, and a tension display is connected to the tension sensor; the tension display is connected to the control module, and the control module is connected to the second pressure regulating valve.
[0011] Furthermore, a servo motor is connected to the paper take-up assembly, and the fixed end of the servo motor is mounted on the frame.
[0012] Furthermore, a second servo motor is connected to the unwinding assembly, and the fixed end of the second servo motor is mounted on the frame.
[0013] Furthermore, the No. 1 pressure regulating valve includes two pressure regulating valves, one end of which is connected to both ends of the No. 1 cylinder, and the other end of which is connected to the air source.
[0014] Furthermore, the second pressure regulating valve includes two pressure regulating valves, one end of which is connected to both ends of the second cylinder, and the other end of which is connected to the air source.
[0015] Furthermore, guide rails are provided on the frame; sliders are connected to the first and second buffer components respectively.
[0016] Beneficial effects
[0017] The advantages of this utility model over the prior art are as follows:
[0018] 1. This application optimizes the stress on the blue film by setting a second tension component to adjust the tension during the wrapping and unwinding process, thereby improving the production qualification rate and enabling it to adapt to more sizes of blue film products.
[0019] 2. This application uses a tension sensor to detect the tension of the blue film and displays it on a tension display. The tension display is connected to a control module, and the control module adjusts the second pressure regulating valve according to the tension magnitude, thereby changing the force of the second cylinder and achieving the effect of tension regulation.
[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 A front view of the overall embodiment of this utility model is shown.
[0023] Figure 2 A partial front view of the position of the No. 2 tension component in an embodiment of this utility model is shown.
[0024] Figure 3 A schematic diagram of the overall structure of an embodiment of this utility model is shown.
[0025] In the diagram, 1. Frame; 2. Release paper take-up assembly; 3. Release paper buffer roller; 4. Unwind assembly; 5. Blue film buffer roller;
[0026] 6. Tension assembly No. 1; 7. Tension assembly No. 2; 71. Buffer assembly No. 2; 72. Connecting plate No. 2; 73. Cylinder No. 2; 74. Pressure regulating valve No. 2;
[0027] 8. Guide roller assembly; 81. Guide roller No. 1; 82. Guide roller No. 2; 83. Guide roller No. 3; 84. Guide roller No. 4; 85. Guide roller No. 5; 86. Guide roller No. 6;
[0028] 9. Tension sensor; 10. Tension display. Detailed Implementation
[0029] 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 embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] This application provides a battery blue film unwinding tension control mechanism, referencing... Figure 1 Where 'a' is the air source, including a control module, frame 1, unwinding assembly 4, release paper take-up assembly 2, release paper buffer roller 3, and blue film buffer roller 5; the release paper take-up assembly 2, release paper buffer roller 3, unwinding assembly 4, and blue film buffer roller 5 are sequentially arranged on the frame 1; Reference Figure 3The frame 1 includes an L-shaped frame and support legs. The unwinding assembly 4, the release paper take-up assembly 2, the release paper buffer roller 3 and the blue film buffer roller 5 are installed on the vertical surface of the L-shaped frame. The mounting ends of the first servo motor and the second servo motor are installed on the horizontal surface of the L-shaped frame. c is the blue film roll and b is the release paper roll.
[0031] The release paper buffer roller 3 is equipped with a first tension component 6; the blue film buffer roller 5 is equipped with a second tension component 7; the tension of the first tension component 6 and the second tension component 7 is adjusted by adjusting the corresponding positions of the release paper buffer roller 3 and the blue film buffer roller 5 respectively.
[0032] Guide roller assemblies 8 are provided on both sides of the blue film buffer roller 5, and the guide roller assemblies 8 are installed on the frame 1.
[0033] In one embodiment of this utility model, a first servo motor is connected to the paper take-up assembly 2, and the fixed end of the first servo motor is mounted on the frame 1.
[0034] The unwinding assembly 4 is connected to a second servo motor, and the fixed end of the second servo motor is mounted on the frame 1.
[0035] During the release paper winding process, the release paper is driven by servo motor No. 1 to rotate the release paper winding assembly 2, thereby winding the release paper through the guide rollers ( Figure 3 (111 and 112) are on the release paper roll; when tension needs to be adjusted during the winding process, the release paper buffer roller 3 is moved up and down by the No. 1 tension component 6 to adjust the tension when winding the release paper.
[0036] During the unwinding of the blue film, the blue film roll is released from the unwinding assembly 4 by the second servo motor, flows through the guide roller assembly 8 to the blue film buffer roller 5, and then flows through the guide roller assembly 8 to the wrapping position. During the unwinding process, the second cylinder 73 is de-aired, and the blue film buffer roller 5 descends under the action of gravity to leave enough blue film for wrapping. During the wrapping process, the second cylinder 73 is vented, which drives the blue film buffer roller 5 to move upward, and the blue film flows through the blue film buffer roller 5 and the guide roller assembly 8 for low-tension wrapping.
[0037] In addition, when the coating speed is increased to the point that cylinder 73 can no longer meet the requirements, a high dynamic response structure such as a linear motor is installed at the position of blue film buffer roller 5 to actively control the tension.
[0038] This application optimizes the stress on the blue film by setting a second tension component 7 to adjust the tension during the wrapping and unwinding process, thereby improving the production qualification rate and enabling it to adapt to more sizes of blue film products.
[0039] In one embodiment of this utility model, the No. 1 tension component 6 includes a No. 1 buffer component, a No. 1 connecting plate, and a No. 1 cylinder; the No. 1 buffer component is slidably mounted on the frame 1, one end of the No. 1 buffer component is connected to the release paper buffer roller 3, and the other end of the No. 1 buffer component is connected to the No. 1 connecting plate; the fixed end of the No. 1 cylinder is mounted on the frame 1, the output end of the No. 1 cylinder is connected to the No. 1 connecting plate, and the air port on the No. 1 cylinder is connected to the No. 1 pressure regulating valve.
[0040] The No. 1 pressure regulating valve is connected to the air source. When tension needs to be adjusted during the winding process, the No. 1 cylinder is vented or de-vented, which drives the No. 1 connecting plate and the No. 1 buffer assembly to move up and down. The No. 1 buffer assembly slides on the frame 1 and drives the release paper buffer roller 3 to move up and down, thereby adjusting the tension during the winding of the release paper.
[0041] In one embodiment of this utility model, reference is made to... Figure 2 The second tension assembly 7 includes a second buffer assembly 71, a second connecting plate 72, and a second cylinder 73. The second buffer assembly 71 is slidably mounted on the frame 1. One end of the second buffer assembly 71 is connected to the blue film buffer roller 5, and the other end of the second buffer assembly 71 is connected to the second connecting plate. The fixed end of the second cylinder 73 is mounted on the frame 1, the output end of the second cylinder 73 is connected to the second connecting plate, and the air port on the second cylinder 73 is connected to the second pressure regulating valve 74.
[0042] The second pressure regulating valve 74 is connected to the air source. During the unwinding of the blue film, the second cylinder 73 cuts off the air supply. The blue film buffer roller 5 is driven by gravity to move the second buffer assembly 71 downward. The second buffer assembly 71 slides downward along the frame 1 to leave enough blue film for wrapping. During the wrapping process, the second cylinder 73 is vented. The second cylinder 73 drives the second buffer assembly 71 to move upward along the frame 1 through the second connecting plate, which in turn drives the blue film buffer roller 5 to move upward for low-tension wrapping.
[0043] In one embodiment of this utility model, reference is made to... Figure 3 The guide roller assembly 8 includes a first guide roller 81, a second guide roller 82, a third guide roller 83, a fourth guide roller 84, a fifth guide roller 85, and a sixth guide roller 86 arranged sequentially; the first guide roller 81, the second guide roller 82, and the third guide roller 83 are arranged on one side of the blue film buffer roller 5; the fourth guide roller 84, the fifth guide roller 85, and the sixth guide roller 86 are arranged on the other side of the blue film buffer roller 5.
[0044] During the unwinding of the blue film, the blue film first flows through guide roller 1 81, guide roller 2 82 and guide roller 3 83 after passing through unwinding assembly 4; then it passes through blue film buffer roller 5, and then through guide roller 4 84, guide roller 5 85 and guide roller 6 86 to the wrapping position; during the release paper winding process, the release paper first flows to roller body 111 after passing through unwinding assembly 4, then through release paper buffer roller 3, and then through roller body 112 to release paper winding assembly 2.
[0045] In one embodiment of this utility model, a tension sensor 9 is provided on the fifth guide roller 85, and a tension display 10 is connected to the tension sensor 9; the tension display 10 is connected to the control module, and the control module is connected to the second pressure regulating valve 74.
[0046] The tension of the blue film is detected by the tension sensor 9 and displayed by the tension display 10. The tension display 10 is connected to the control module. The control module adjusts the second pressure regulating valve 74 according to the tension, so that the force of the second cylinder 73 changes, thereby achieving the effect of tension adjustment.
[0047] In one embodiment of this utility model, the No. 1 pressure regulating valve includes two pressure regulating valves, one end of each of the two pressure regulating valves is connected to both ends of the No. 1 cylinder, and the other end of each of the two pressure regulating valves is connected to an air source.
[0048] The second pressure regulating valve 74 includes two pressure regulating valves, one end of which is connected to both ends of the second cylinder 73, and the other end of which is connected to the air source.
[0049] In one embodiment of this utility model, a guide rail is provided on the frame 1; sliders are respectively connected to the first buffer component and the second buffer component 71.
[0050] By using sliders and guide rails, the No. 1 buffer component can more stably drive the blue film buffer roller 5 to move up and down, improving stability during the adjustment process.
[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A battery blue film unwinding tension control mechanism, characterized by, It includes a control module, a frame (1), an unwinding assembly (4), a release paper take-up assembly (2), a release paper buffer roller (3), and a blue film buffer roller (5); the release paper take-up assembly (2), the release paper buffer roller (3), the unwinding assembly (4), and the blue film buffer roller (5) are arranged sequentially on the frame (1); The release paper buffer roller (3) is provided with a first tension component (6); the blue film buffer roller (5) is provided with a second tension component (7); the first tension component (6) and the second tension component (7) adjust the tension by adjusting the corresponding positions of the release paper buffer roller (3) and the blue film buffer roller (5) respectively; Guide roller assemblies (8) are provided on both sides of the blue film buffer roller (5), and the guide roller assemblies (8) are installed on the frame (1).
2. The battery blue film unwinding tension control mechanism according to claim 1, characterized in that, The No. 1 tension component (6) includes a No. 1 buffer component, a No. 1 connecting plate and a No. 1 cylinder; the No. 1 buffer component is slidably installed on the frame (1), one end of the No. 1 buffer component is connected to the release paper buffer roller (3), and the other end of the No. 1 buffer component is connected to the No. 1 connecting plate; the fixed end of the No. 1 cylinder is installed on the frame (1), the output end of the No. 1 cylinder is connected to the No. 1 connecting plate, and the air port on the No. 1 cylinder is connected to the No. 1 pressure regulating valve.
3. The battery blue film unwinding tension control mechanism according to claim 1, characterized in that, The second tension assembly (7) includes a second buffer assembly (71), a second connecting plate (72), and a second cylinder (73); the second buffer assembly (71) is slidably mounted on the frame (1), one end of the second buffer assembly (71) is connected to the blue film buffer roller (5), and the other end of the second buffer assembly (71) is connected to the second connecting plate; the fixed end of the second cylinder (73) is mounted on the frame (1), the output end of the second cylinder (73) is connected to the second connecting plate, and the air port on the second cylinder (73) is connected to the second pressure regulating valve (74).
4. The battery blue film unwinding tension control mechanism according to claim 1, characterized in that, The guide roller assembly (8) includes a first guide roller (81), a second guide roller (82), a third guide roller (83), a fourth guide roller (84), a fifth guide roller (85), and a sixth guide roller (86) arranged sequentially; the first guide roller (81), the second guide roller (82), and the third guide roller (83) are arranged on one side of the blue film buffer roller (5); the fourth guide roller (84), the fifth guide roller (85), and the sixth guide roller (86) are arranged on the other side of the blue film buffer roller (5).
5. The battery blue film unwinding tension control mechanism according to claim 4, characterized in that, A tension sensor (9) is installed on the fifth guide roller (85), and a tension display (10) is connected to the tension sensor (9); the tension display (10) is connected to the control module, and the control module is connected to the second pressure regulating valve (74).
6. The battery blue film unwinding tension control mechanism according to claim 1, characterized in that, The paper take-up assembly (2) is connected to a servo motor, and the fixed end of the servo motor is installed on the frame (1).
7. The battery blue film unwinding tension control mechanism according to claim 1, characterized in that, The unwinding assembly (4) is connected to a second servo motor, and the fixed end of the second servo motor is installed on the frame (1).
8. The battery blue film unwinding tension control mechanism according to claim 2, characterized in that, The No. 1 pressure regulating valve includes two pressure regulating valves. One end of each pressure regulating valve is connected to both ends of the No. 1 cylinder, and the other end of each pressure regulating valve is connected to the air source.
9. The battery blue film unwinding tension control mechanism according to claim 3, characterized in that, The second pressure regulating valve (74) includes two pressure regulating valves. One end of each pressure regulating valve is connected to both ends of the second cylinder (73), and the other end of each pressure regulating valve is connected to the air source.
10. The battery blue film unwinding tension control mechanism according to claim 9, characterized in that, The frame (1) is equipped with guide rails; the first buffer component and the second buffer component (71) are respectively connected with sliders.