A flexible electrode sheet surface coating device

Abstract

This utility model discloses a flexible electrode sheet surface coating device, including a housing and an unwinding roller mounted on the top left side of the housing and a rewinding roller mounted on the bottom. A horizontal partition is fixedly connected inside the housing, and vertical partitions are fixedly connected to the top and bottom of the horizontal partition. Two sets of guide rollers arranged at equal distances are rotatably installed inside the housing, located at the top and bottom of the horizontal partition, respectively. This utility model allows the coated electrode sheet to pass through the vertical partition, through the drying area of ​​the electrothermal drying unit, be dried, and then output. It then passes down through the two guide rollers on the right side and re-enters the housing. Next, another coating roller coats the other side of the electrode sheet. After coating, it passes through the drying area of ​​the electrothermal drying unit below the horizontal partition for further drying. This achieves the advantages of continuous, separate double-sided coating with independent drying on both sides, and continuous, integrated double-sided coating operation, resulting in higher efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flexible electrode coating technology, and more specifically, to a flexible electrode sheet surface coating device. Background Technology

[0002] Flexible electrode sheets achieve high flexibility, stretchability, and stable conductivity through composite structure design of flexible substrate materials (such as carbon nanofibers and polymers) and conductive materials (MoS2, Ge, PPTC polymers, etc.).14 For example, the combination of carbon nanofiber layers and MoS2 loading can improve the mechanical strength and electrochemical performance of the electrode while maintaining its flexibility.1 Furthermore, the development of novel metal-free conductive polymers (such as biocompatible composite materials) effectively reduces the stimulation and inflammatory response of tissues caused by traditional metal electrodes.

[0003] In existing flexible electrode sheets, the coating process generally adopts an unwinding continuous coating operation. After coating, high-temperature drying is required to allow the adhesive to adhere to the electrode sheet. However, the electrode sheet generally needs to be coated on both sides. Simultaneous coating on both sides with two rollers can compress the electrode sheet, which may cause twisting and deformation, resulting in uneven coating. At the same time, drying on both sides requires high-temperature drying on both sides at the same time. Excessive drying temperature may affect the physical properties of the electrode sheet. Utility Model Content

[0004] The purpose of this invention is to provide a flexible electrode sheet surface coating device, which aims to solve the problem that existing flexible electrode sheets are usually coated using an unwinding continuous coating method, requiring high-temperature drying after coating to ensure the adhesion between the adhesive and the electrode sheet. However, during double-sided coating, simultaneous dual-roller operation may cause the electrode sheet to twist and deform, resulting in uneven coating.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] A flexible electrode sheet surface coating device includes a housing and an unwinding roller mounted on the top left side of the housing and a rewinding roller mounted on the bottom. A horizontal partition is fixedly connected inside the housing, and vertical partitions are fixedly connected to the top and bottom of the horizontal partition. Two sets of guide rollers are rotatably mounted inside the housing, with the two sets of guide rollers located at the top and bottom of the horizontal partition, respectively. Two coating rollers are rotatably mounted inside the housing, with the two coating rollers located between the two vertical partitions and the housing. A driving component is installed between one end of the back of the two coating rollers and the housing. Two guide rollers are installed on the right side of the housing. Two sets of electrothermal drying units are installed at equal intervals on the top and bottom of the horizontal partitions inside the housing, respectively.

[0007] The coating roller is internally equipped with a glue guide tube, a glue outlet sleeve, and a rotary joint. One end of the glue guide tube is rotatably connected to the inside of the glue outlet sleeve, and the left end of the glue guide tube passes through and is rotatably connected to the left end of the coating roller. The rotary joint is installed at the left end of the glue guide tube.

[0008] As a further description of the above technical solution: both the guide tube and the dispensing sleeve are provided with corresponding and matching strip-shaped holes, and the guide tube rotates relative to the dispensing sleeve to cause the strip-shaped holes to be misaligned.

[0009] As a further description of the above technical solution: the driving component includes a drive motor, a main pulley, two transmission belts, and two auxiliary pulleys. The drive motor is fixedly installed on the back of the housing. The output end of the drive motor is fixedly connected to the main pulley via a coupling. The inner sides of the two transmission belts are both connected to the outer sides of the main pulley. The inner sides of the transmission belts are connected to the outer sides of the auxiliary pulleys. The two auxiliary pulleys are respectively fixedly installed at the ends of the back of the two coating rollers. The auxiliary pulleys are hollow and sleeved on the outer side of the adhesive guide tube.

[0010] As a further description of the above technical solution: two tensioning rollers are respectively installed on the left and right sides of the housing. The two tensioning rollers on the left side are V-shapedly installed and engaged with the take-up roller and the unwind roller, and the two tensioning rollers on the right side are V-shapedly installed and engaged with the two guide rollers on the right side.

[0011] As a further description of the above technical solution: the heating power of both sets of electrothermal drying units increases sequentially along the forward direction of the electrode sheet.

[0012] As a further description of the above technical solution: the two coating rollers correspond to the opposite ends of the two sets of guide rollers.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] This solution utilizes a separate continuous double-sided coating design to achieve staggered drying on both sides, avoiding excessive heat concentration that could damage the electrode sheets. Furthermore, it employs a glue guide tube, glue outlet sleeve, and strip-shaped holes to adjust the cross-sectional area of ​​the glue outlet, thus adapting to different glue concentrations. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of section A in the middle;

[0017] Figure 3 This is a partial side view sectional structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the rear view structure of this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Housing; 2. Unwinding roller; 3. Rewinding roller; 4. Horizontal partition; 5. Vertical partition; 6. Guide roller; 7. Coating roller; 71. Glue guide tube; 72. Glue outlet sleeve; 73. Rotary joint; 74. Strip hole; 8. Drive component; 81. Drive motor; 82. Main pulley; 83. Transmission belt; 84. Secondary pulley; 9. Guide roller; 10. Electric heating drying unit; 11. Tensioner. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0022] Please see Figure 1-4 In this utility model, a flexible electrode sheet surface coating device includes a housing 1 and an unwinding roller 2 and a rewinding roller 3 installed at the top left side of the housing 1. A horizontal partition 4 is fixedly connected inside the housing 1. Vertical partitions 5 are fixedly connected to the top and bottom of the horizontal partition 4. Two sets of guide rollers 6 are rotatably installed inside the housing 1, with the two sets of guide rollers 6 located at the top and bottom of the horizontal partition 4, respectively. Two coating rollers 7 are rotatably installed inside the housing 1, with the two coating rollers 7 located between the two vertical partitions 5 and the housing 1, respectively. A driving component 8 is installed between one end of the back of the two coating rollers 7 and the housing 1. Two guide rollers 9 are installed on the right side of the housing 1. Two sets of electric heating drying units 10 are installed at equal distances on the top of the inner side of the housing 1 and the bottom of the horizontal partition 4, respectively.

[0023] The coating roller 7 is equipped with a glue guide tube 71, a glue outlet sleeve 72 and a rotary joint 73. One end of the glue guide tube 71 is rotatably connected to the inside of the glue outlet sleeve 72. The left end of the glue guide tube 71 passes through and is rotatably connected to the left end of the coating roller 7. The rotary joint 73 is installed at the left end of the glue guide tube 71.

[0024] In this invention, a flexible electrode roll is installed on the unwinding roller 2 on the left side of the housing 1. The end of the electrode roll is then led out, inserted into the housing 1, and drawn straight out along the upper guide roller 6. It passes the outer side of the coating roller 7, then passes through two guide rollers 9 in sequence, and is reintroduced into the housing 1 from the bottom right side, entering below the horizontal partition 4. It is then led out by the lower guide roller 6 and finally wound up by the winding roller 3. While the electrode roll is running through the housing 1 along the above path, its upper surface is coated with adhesive by the top coating roller 7. The coated electrode roll passes through the vertical partition 5, through the drying area of ​​the electric heating drying unit 10, is dried, and then output. It is then guided downwards by the two guide rollers 9 on the right side and re-enters the housing 1, then passes through another... The coating roller 7 coats the other side of the electrode sheet. After coating, it passes through the drying area of ​​the electric heating drying unit 10 below the partition plate 4 for further drying. This enables the device to achieve continuous, separate double-sided coating, independent drying on both sides, and continuous double-sided coating operation in an integrated manner, which is more efficient. This solves the problem in the prior art where the general unwinding continuous coating operation is used, and high-temperature drying is required after coating to make the adhesive adhere to the electrode sheet. However, the electrode sheet generally needs to be coated on both sides. Simultaneous double-sided double-roller coating will squeeze the electrode sheet, which may cause twisting and deformation, resulting in uneven coating. At the same time, double-sided coating and drying requires simultaneous high-temperature drying on both sides, and excessively high drying temperature may affect the physical properties of the electrode sheet.

[0025] Please see Figure 3 The guide tube 71 and the dispensing sleeve 72 are both provided with corresponding and matching strip holes 74. The guide tube 71 rotates relative to the dispensing sleeve 72 to cause the strip holes 74 to be misaligned.

[0026] In this invention, by rotating the adhesive guide tube 71 relative to the adhesive outlet sleeve 72, the strip holes 74 on both are angularly misaligned, thereby changing the passing area of ​​the corresponding strip holes 74 and enabling the output of adhesives of different concentrations, thus improving adaptability.

[0027] Please see Figure 4 The drive unit 8 includes a drive motor 81, a main pulley 82, two transmission belts 83, and two auxiliary pulleys 84. The drive motor 81 is fixedly installed on the back of the housing 1. The output end of the drive motor 81 is fixedly connected to the main pulley 82 through a coupling. The inner sides of the two transmission belts 83 are connected to the outer sides of the main pulley 82. The inner sides of the transmission belts 83 are connected to the outer sides of the auxiliary pulleys 84. The two auxiliary pulleys 84 are fixedly installed on the ends of the back of the two coating rollers 7. The auxiliary pulleys 84 are hollow and sleeved on the outer side of the adhesive guide tube 71.

[0028] In this invention, the main pulley 82 is driven to rotate by starting the drive motor 81, and then the two auxiliary pulleys 84 are driven to rotate by the two transmission belts 83, so as to drive the two coating rollers 7 to rotate and apply adhesive to both sides of the electrode sheet.

[0029] Please see Figure 1 Among them, two tensioning wheels 11 are installed on the left and right sides of the housing 1, respectively. The two tensioning wheels 11 on the left side are V-shapedly installed and matched with the take-up roller 3 and the unwinding roller 2, and the two tensioning wheels 11 on the right side are V-shapedly installed and matched with the two guide rollers 9 on the right side.

[0030] In this invention, four tensioning rollers 11 are used to tension and wind up the electrode sheets from both sides, making the tension more stable and the unfolding more flat during operation and transportation.

[0031] Please see Figure 1 Among them, the heating power of both sets of electric heating drying units 10 increases sequentially along the forward direction of the electrode sheet.

[0032] In this invention, the heating power of the group of electric heating drying units 10 increases sequentially along the forward direction of the electrode sheet, thereby achieving a stepped drying of the adhesive on the coated electrode sheet and improving the uniformity of drying.

[0033] Please see Figure 1 Among them, the two coating rollers 7 correspond to the opposite ends of the two sets of guide rollers 6.

[0034] In this invention, the electrode sheet remains stable and does not deform when coating is achieved by having two coating rollers 7 corresponding to the opposite ends of two sets of guide rollers 6.

[0035] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A flexible electrode sheet surface coating device, comprising a housing (1) and an unwinding roller (2) mounted to the top left side of the housing (1) and a rewinding roller (3) mounted to the bottom, characterized in that: A horizontal partition (4) is fixedly connected inside the box (1). Vertical partitions (5) are fixedly connected to the top and bottom of the horizontal partition (4). Two sets of guide rollers (6) are rotatably installed inside the box (1). The two sets of guide rollers (6) are located at the top and bottom of the horizontal partition (4) respectively. Two coating rollers (7) are rotatably installed inside the box (1). The two coating rollers (7) are located between the two vertical partitions (5) and the box (1) respectively. A drive unit (8) is installed between the back end of the two coating rollers (7) and the box (1). Two guide rollers (9) are installed on the right side of the box (1). Two sets of electric heating drying units (10) are equidistantly installed on the top of the inner side of the box (1) and the bottom of the horizontal partition (4) respectively. The coating roller (7) is equipped with a glue guide tube (71), a glue outlet sleeve (72) and a rotating joint (73). One end of the glue guide tube (71) is rotatably connected to the inside of the glue outlet sleeve (72). The left end of the glue guide tube (71) passes through and is rotatably connected to the left end of the coating roller (7). The rotating joint (73) is installed at the left end of the glue guide tube (71).

2. The flexible electrode sheet surface coating equipment according to claim 1, characterized in that: Both the glue guide tube (71) and the glue outlet sleeve (72) are provided with corresponding and matching strip holes (74). The glue guide tube (71) rotates relative to the glue outlet sleeve (72) to drive the strip holes (74) to be misaligned.

3. The flexible electrode sheet surface coating equipment according to claim 1, characterized in that: The drive unit (8) includes a drive motor (81), a main pulley (82), two transmission belts (83) and two auxiliary pulleys (84). The drive motor (81) is fixedly installed on the back of the housing (1). The output end of the drive motor (81) is fixedly connected to the main pulley (82) through a coupling. The inner sides of the two transmission belts (83) are connected to the outer sides of the main pulley (82). The inner sides of the transmission belts (83) are connected to the outer sides of the auxiliary pulleys (84). The two auxiliary pulleys (84) are fixedly installed at the ends of the back of the two coating rollers (7). The auxiliary pulleys (84) are hollow and sleeved on the outer side of the adhesive guide tube (71).

4. The flexible electrode sheet surface coating equipment according to claim 1, characterized in that: Two tensioning rollers (11) are installed on the left and right sides of the housing (1), respectively. The two tensioning rollers (11) on the left side are V-shapedly installed and engaged with the winding roller (3) and the unwinding roller (2), respectively. The two tensioning rollers (11) on the right side are V-shapedly installed and engaged with the two guide rollers (9) on the right side.

5. The flexible electrode sheet surface coating device according to claim 1, characterized in that: The heating power of both sets of electric drying units (10) increases sequentially along the direction of electrode sheet movement.

6. The flexible electrode sheet surface coating device according to claim 1, characterized in that: The two coating rollers (7) are respectively positioned at opposite ends of the two sets of guide rollers (6).

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