Coating equipment for graphene electrothermal film production

Abstract

The utility model relates to the technical field of graphene electrothermal film production equipment, and discloses coating equipment for graphene electrothermal film production, which comprises a base and a coating box arranged above the base, the bottom of the coating box is provided with an inverted trapezoidal discharge port, and the inner wall of the inverted trapezoidal discharge port is slidably connected with a coating roller; the two ends of the coating roller are fixedly connected with rotating shafts, lifting grooves are formed in the two sides of the inverted-trapezoid-shaped discharging port in a penetrating mode, the two rotating shafts slide up and down in the two lifting grooves respectively, the sides, away from each other, of the two rotating shafts are connected with lifting assemblies, and the film supporting assembly is located under the inverted-trapezoid-shaped discharging port. According to the coating equipment for graphene electrothermal film production, lifting assemblies on the two sides can drive a coating roller to move up and down in an inverted-trapezoid-shaped discharging opening in a small range, so that the size of a gap between the coating roller and the inverted-trapezoid-shaped discharging opening is adjusted, the discharging speed is stably controlled, and accurate control over the thickness of a coating layer on the surface of a film body is improved; and the production quality of the graphene electrothermal film body is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of graphene electrothermal film production equipment, specifically a coating equipment for graphene electrothermal film production. Background Technology

[0002] Graphene electrothermal films, as a novel heating material utilizing the high electrical and thermal conductivity of graphene, are highly dependent on coating equipment as a key process in their production. Their performance and quality are directly affected by this equipment. Commonly used coating equipment includes blade coaters, roller coaters, spray coating equipment, and dip coating. Roller coaters, in particular, use one or more pairs of rotating coating rollers to uniformly transfer coating onto the substrate. Depending on the arrangement of the rollers, they can be further subdivided into forward coating and reverse coating.

[0003] Patent CN219664204U discloses a coating device for graphene electrothermal film production, including a base plate. A storage bin is positioned above the base plate, and a film body is positioned below the storage bin. Two roller frames are fixedly mounted on the upper surface of the base plate, with the outer surface of each roller frame contacting the bottom surface of the film body. Sliding grooves are formed on both the front and back of the storage bin, and a connecting column is rotatably connected inside each sliding groove. A coating roller is installed inside the storage bin. Powered by a small motor and driven by the connecting column, the coating roller rotates, ensuring that the coating inside the storage bin is evenly coated onto the film body. This prevents missed or excessive coating on the graphene electrothermal film surface due to nozzle clogging, improving the coating quality during graphene electrothermal film production and eliminating the need for secondary coating, thus guaranteeing both production efficiency and coating quality.

[0004] While the aforementioned coating equipment can apply coating to the membrane relatively evenly using a rotating coating roller, in actual operation, a gap forms between the coating roller and the discharge port of the storage tank when the membrane presses upward against the coating roller. Because the adhesion of the coating is affected by pressure, the size of this gap is difficult to control. Excessive pressure may cause too much coating to overflow from the gap, resulting in an overly thick coating layer on the membrane; conversely, insufficient pressure will result in a smaller gap, slower coating overflow, and an underly thin coating. Both of these situations will affect the final coating effect on the membrane, preventing the coating layer from meeting production requirements. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a coating equipment for the production of graphene electrothermal films. By actively controlling the gap between the coating roller and the discharge port of the storage tank, the thickness of the coating layer on the film meets the production requirements, thereby improving the production quality of graphene electrothermal films.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coating device for producing graphene electrothermal film, comprising a base and a coating tank installed above the base. The bottom of the coating tank has an inverted trapezoidal discharge port. A coating roller is slidably connected to the inner wall of the inverted trapezoidal discharge port. Rotating shafts are fixedly connected to both ends of the coating roller. Lifting grooves are opened through both sides of the inverted trapezoidal discharge port. The two rotating shafts slide up and down in the two lifting grooves respectively. Lifting components are connected to the sides of the two rotating shafts that are far apart from each other. A film support assembly and a film placement platform are connected to the upper surface of the base. The film support assembly is located directly below the inverted trapezoidal discharge port.

[0007] Furthermore, the lifting assembly includes a lifting block and an electric telescopic rod. The electric telescopic rod is fixedly connected to the side wall at the bottom of the paint tank and is located above the lifting groove. The lifting block is fixedly connected to the telescopic end of the electric telescopic rod. The rotating shaft is rotatably connected to the lifting block. The lifting block is slidably connected to the side wall of the paint tank. A drive motor is fixedly connected to the side of the lifting block away from the paint tank. The output shaft of the drive motor passes through the lifting block and is fixedly connected to the adjacent rotating shaft. Limiting components are connected to both sides of the lifting block.

[0008] Furthermore, the limiting assembly includes two symmetrically arranged limiting shells and two limiting blocks. The two limiting blocks are fixedly connected to both sides of the lifting block, and the two limiting shells are located on both sides of the lifting block and fixedly connected to the paint tank. Each of the two limiting shells has a limiting groove on an adjacent side, and the two limiting blocks are slidably connected to the two limiting grooves.

[0009] Furthermore, the mold support assembly includes a film support roller and two support blocks. The two ends of the film support roller are rotatably connected to the two support blocks respectively through a rotating shaft. Both support blocks are connected to the upper surface of the base. The film support roller is located directly below the coating roller and is arranged parallel to the coating roller. The length of the film support roller is not less than the length of the coating roller.

[0010] Furthermore, each of the two support blocks is connected to a lifting cylinder at its bottom, the bottom of each lifting cylinder is fixedly connected to the base, and the telescopic ends of each lifting cylinder are fixedly connected to the bottom of the two support blocks respectively.

[0011] Furthermore, a film-supporting motor is fixedly connected to one of the support blocks on the side away from the film-supporting roller.

[0012] Furthermore, the film-laying platform has an inverted U-shaped design, with both ends of the platform fixedly connected to the base. An adjustment slot is provided through the side of the platform away from the base, and two symmetrically arranged sliders are slidably connected in the adjustment slot. An adjustment component is connected to the bottom of the two sliders, and a clamping plate is fixedly connected to the top of each slider. Both clamping plates are slidably connected to the upper surface of the film-laying platform.

[0013] Furthermore, the adjustment assembly includes a bidirectional screw, two balance bars, and two symmetrically arranged adjustment plates. The bidirectional screw is arranged parallel to the two balance bars and is located between the two balance bars. One end of the bidirectional screw is rotatably connected to the inner wall of one end of the film-laying platform, and the other end passes through the two adjustment plates and the inner wall of the other end of the film-laying platform in sequence, and is threadedly connected to the two adjustment plates. One end of each of the two balance bars is fixedly connected to the inner wall of one end of the film-laying platform, and the other end passes through the two adjustment plates in sequence, and is fixedly connected to the inner wall of the other end of the film-laying platform. The two adjustment plates are respectively fixedly connected to the bottom of the two sliders.

[0014] Furthermore, a hand-tightening cap is fixedly connected to one end of the bidirectional screw that passes through the film-laying platform.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This coating equipment for producing graphene electrothermal films uses lifting components on both sides to move the coating roller up and down slightly within the inverted trapezoidal discharge port. This adjusts the gap between the coating roller and the inverted trapezoidal discharge port, thereby stabilizing the discharge speed, improving the precision control of the coating thickness on the film surface, and enhancing the production quality of the graphene electrothermal film. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance and connection structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the base portion of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure of the adjustment component of this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the connection structure of the paint box part of this utility model;

[0021] Figure 5 Based on Figure 4 Exploded cross-sectional view of the connection structure.

[0022] In the diagram: 1. Base; 2. Paint tank; 3. Paint roller; 4. Rotating shaft; 5. Film feeding platform; 6. Lifting block; 7. Electric telescopic rod; 8. Drive motor; 9. Limiting shell; 10. Limiting block; 11. Film support roller; 12. Support block; 13. Lifting cylinder; 14. Film support motor; 15. Slider; 16. Clamping plate; 17. Bidirectional screw; 18. Balance bar; 19. Adjusting plate; 20. Hand-tightening cap; 201. Inverted trapezoidal discharge port; 202. Lifting groove; 501. Adjusting clamping groove; 901. Limiting groove. Detailed Implementation

[0023] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1 - Figure 5 A coating device for producing graphene electrothermal film includes a base 1 and a coating tank 2 installed above the base 1. The bottom of the coating tank 2 has an inverted trapezoidal discharge port 201. A coating roller 3 is slidably connected to the inner wall of the inverted trapezoidal discharge port 201. Rotating shafts 4 are fixedly connected to both ends of the coating roller 3. Lifting grooves 202 are opened through both sides of the inverted trapezoidal discharge port 201. The two rotating shafts 4 slide up and down in the two lifting grooves 202 respectively. Lifting components are connected to the sides of the two rotating shafts 4 that are far apart from each other. A film support assembly and a film placement platform 5 are connected to the upper surface of the base 1. The film support assembly is located directly below the inverted trapezoidal discharge port 201.

[0025] like Figure 1 - Figure 5 As shown, the coating equipment for graphene electrothermal film production in this utility model is structurally similar to existing coating equipment for graphene electrothermal film production, such as the coating equipment for graphene electrothermal film production disclosed in patent announcement number CN219664204U. The main improvement of this utility model lies in more precisely controlling the coating thickness of the coating roller 3, thereby improving the production quality of the graphene electrothermal film. Figures 1 to 5 As shown, in the graphene electrothermal film production coating equipment of this utility model, during use, the lifting components on both sides drive the rotating shaft 4 and the coating roller 3 to move up and down within the inverted trapezoidal discharge port 201, thereby controlling the size of the gap between the side wall of the coating roller 3 and the inner wall of the inverted trapezoidal discharge port 201. Then, the film is placed on the film placement platform 5, and the end of the film is placed between the film support component and the coating roller 3. At this time, as the coating roller 3 rotates, the coating inside the coating box 2 can be evenly coated on the surface of the film. During the coating process, the size of the gap between the coating roller 3 and the inverted trapezoidal discharge port 201 is stable, thereby making the amount of coating carried out by the rotating coating roller 3 stable, making the coating on the surface of the film more uniform and stable, improving the coating effect of graphene electrothermal film production, and improving the production quality of graphene electrothermal film.

[0026] like Figure 4 and Figure 5As shown, the lifting assembly includes a lifting block 6 and an electric telescopic rod 7. The electric telescopic rod 7 is fixedly connected to the side wall at the bottom of the paint tank 2 and is located above the lifting groove 202. The lifting block 6 is fixedly connected to the telescopic end of the electric telescopic rod 7. The rotating shaft 4 is rotatably connected to the lifting block 6. The lifting block 6 is slidably connected to the side wall of the paint tank 2. A drive motor 8 is fixedly connected to the side of the lifting block 6 away from the paint tank 2. The output shaft of the drive motor 8 passes through the lifting block 6 and is fixedly connected to the adjacent rotating shaft 4. Limiting components are connected to both sides of the lifting block 6. By using the electric telescopic rod 7 in conjunction with the lifting block 6, the rotating shaft 4 can be driven to move up and down within the lifting groove 202. At the same time, the drive motor 8 can drive the rotating shaft 4 to perform rotational coating. The drive motor 8 only needs to be installed and fixed on the lifting block 6 on one side of the paint tank 2, while the electric telescopic rods 7 that operate synchronously need to be installed on both sides of the paint tank 2, thereby realizing the horizontal up and down lifting of the paint roller 3.

[0027] like Figure 4 and Figure 5 As shown, the limiting assembly includes two symmetrically arranged limiting shells 9 and two limiting blocks 10. The two limiting blocks 10 are fixedly connected to both sides of the lifting block 6, and the two limiting shells 9 are located on both sides of the lifting block 6 and fixedly connected to the paint tank 2. Each adjacent side of the two limiting shells 9 has a limiting groove 901, and the two limiting blocks 10 are slidably connected to the two limiting grooves 901. By sliding the two limiting blocks 10 up and down within the limiting grooves 901 of the two limiting shells 9, the lifting block 6 is always in contact with the outside of the paint tank 2 when it moves up and down, and the lifting groove 202 is sealed to prevent dust or other impurities from entering the lifting groove 202 and causing blockage.

[0028] like Figure 1 and Figure 2 As shown, the mold assembly includes a film-supporting roller 11 and two support blocks 12. The two ends of the film-supporting roller 11 are rotatably connected to the two support blocks 12 via rotating shafts. Both support blocks 12 are connected to the upper surface of the base 1. The film-supporting roller 11 is located directly below the coating roller 3 and is arranged parallel to the coating roller 3. The length of the film-supporting roller 11 is not less than the length of the coating roller 3. The film-supporting roller 11 rotates between the two support blocks 12 via rotating shafts. During the coating process of the coating roller 3, as the film moves continuously, the film-supporting roller 11 also rotates and rolls, thereby avoiding obstruction of the film's movement during coating.

[0029] like Figure 1 and Figure 2As shown, each of the two support blocks 12 is connected to a lifting cylinder 13 at its bottom. The bottom of each lifting cylinder 13 is fixedly connected to the base 1, and the telescopic ends of the two lifting cylinders 13 are fixedly connected to the bottom of the two support blocks 12 respectively. The lifting cylinders 13 can drive the film support roller 11 to adjust its height, thereby stably clamping the film between the film support roller 11 and the coating roller 3, ensuring that the upper surface of the film is in contact with the coating roller 3, and completing the coating operation.

[0030] like Figure 1 and Figure 2 As shown, a film-supporting motor 14 is fixedly connected to one of the support blocks 12 on the side away from the film-supporting roller 11. The film-supporting motor 14 can drive the film-supporting roller 11 to rotate synchronously with the coating roller 3, so that the film can move more evenly and stably at the bottom of the coating roller 3, and the coating of the coating roller 3 on the surface of the film can be more uniform.

[0031] like Figure 1 - Figure 3 As shown, the film-laying platform 5 has an inverted U-shaped design. Both ends of the platform 5 are fixedly connected to the base 1. An adjustment groove 501 is provided through the side of the platform 5 away from the base 1. Two symmetrically arranged sliders 15 are slidably connected within the adjustment groove 501. An adjustment component is connected to the bottom of the two sliders 15, and a clamping plate 16 is fixedly connected to the top of each slider 15. Both clamping plates 16 are slidably connected to the upper surface of the platform 5. The distance between the two clamping plates 16 can be adjusted by the adjustment component, thereby limiting the two sides of the film placed on the platform 5, preventing the film from tilting when it moves on the platform for coating, and improving the coating stability during the production of graphene electrothermal film.

[0032] like Figure 1 - Figure 3 As shown, the adjustment assembly includes a bidirectional screw 17, two balance rods 18, and two symmetrically arranged adjustment plates 19. The bidirectional screw 17 is parallel to the two balance rods 18 and is located between them. One end of the bidirectional screw 17 is rotatably connected to the inner wall of one end of the film-laying platform 5, and the other end passes through the two adjustment plates 19 and the inner wall of the other end of the film-laying platform 5, and is threadedly connected to the two adjustment plates 19. One end of each of the two balance rods 18 is fixedly connected to the inner wall of one end of the film-laying platform 5, and the other end passes through the two adjustment plates 19, and is fixedly connected to the inner wall of the other end of the film-laying platform 5. The two adjustment plates 19 are respectively fixedly connected to the bottom of the two sliders 15. By rotating the bidirectional screw 17, the two adjustment plates 19 can be moved closer or further apart, which in turn drives the two clamping plates 16 to move through the sliders 15. At the same time, during the adjustment movement, the two balance rods 18 make the two adjustment plates 19 more stable and less prone to tilting.

[0033] like Figure 1- Figure 3 As shown, a hand-tightening cap 20 is fixedly connected to one end of the bidirectional screw 17 that passes through the film-laying platform 5. The hand-tightening cap 20 allows the bidirectional screw 17 to be rotated more smoothly.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A coating device for producing graphene electrothermal film, comprising a base (1) and a coating tank (2) mounted above the base (1), characterized in that: The bottom of the paint tank (2) is provided with an inverted trapezoidal discharge port (201). A paint roller (3) is slidably connected to the inner wall of the inverted trapezoidal discharge port (201). Rotating shafts (4) are fixedly connected to both ends of the paint roller (3). Lifting grooves (202) are opened through both sides of the inverted trapezoidal discharge port (201). The two rotating shafts (4) slide up and down in the two lifting grooves (202) respectively. Lifting components are connected to the side of the two rotating shafts (4) that are far apart from each other. A film support assembly and a film placement platform (5) are connected to the upper surface of the base (1). The film support assembly is located directly below the inverted trapezoidal discharge port (201).

2. The coating equipment for producing graphene electrothermal film according to claim 1, characterized in that: The lifting assembly includes a lifting block (6) and an electric telescopic rod (7). The electric telescopic rod (7) is fixedly connected to the side wall at the bottom of the paint tank (2). The electric telescopic rod (7) is located above the lifting groove (202). The lifting block (6) is fixedly connected to the telescopic end of the electric telescopic rod (7). The rotating shaft (4) is rotatably connected to the lifting block (6). The lifting block (6) is slidably connected to the side wall of the paint tank (2). A drive motor (8) is fixedly connected to the side of the lifting block (6) away from the paint tank (2). The output shaft of the drive motor (8) passes through the lifting block (6) and is fixedly connected to the adjacent rotating shaft (4). Limiting components are connected to both sides of the lifting block (6).

3. The coating equipment for producing graphene electrothermal film according to claim 2, characterized in that: The limiting assembly includes two symmetrically arranged limiting shells (9) and two limiting blocks (10). The two limiting blocks (10) are fixedly connected to both sides of the lifting block (6). The two limiting shells (9) are located on both sides of the lifting block (6) and fixedly connected to the paint box (2). Each of the two limiting shells (9) has a limiting groove (901) on an adjacent side. The two limiting blocks (10) are slidably connected to the two limiting grooves (901).

4. A coating device for producing graphene electrothermal film according to claim 1, 2 or 3, characterized in that: The film support assembly includes a film support roller (11) and two support blocks (12). The two ends of the film support roller (11) are rotatably connected to the two support blocks (12) respectively through a rotating shaft. Both support blocks (12) are connected to the upper surface of the base (1). The film support roller (11) is located directly below the coating roller (3) and is arranged parallel to the coating roller (3). The length of the film support roller (11) is not less than the length of the coating roller (3).

5. The coating equipment for producing graphene electrothermal film according to claim 4, characterized in that: The bottom of each of the two support blocks (12) is connected to a lifting cylinder (13), the bottom of each of the two lifting cylinders (13) is fixedly connected to the base (1), and the telescopic ends of the two lifting cylinders (13) are fixedly connected to the bottom of the two support blocks (12) respectively.

6. The coating equipment for producing graphene electrothermal film according to claim 4, characterized in that: One of the support blocks (12) is fixedly connected to a film-supporting motor (14) on the side away from the film-supporting roller (11).

7. The coating equipment for producing graphene electrothermal film according to claim 5, characterized in that: One of the support blocks (12) is fixedly connected to a film-supporting motor (14) on the side away from the film-supporting roller (11).

8. A coating device for producing graphene electrothermal film according to claim 1, 2, 3, 5, 6 or 7, characterized in that: The film-laying platform (5) is an inverted U-shaped design. Both ends of the film-laying platform (5) are fixedly connected to the base (1). An adjustment groove (501) is provided through the side of the film-laying platform (5) away from the base (1). Two symmetrically arranged sliders (15) are slidably connected in the adjustment groove (501). An adjustment component is connected to the bottom of the two sliders (15). A clamp (16) is fixedly connected to the top of the two sliders (15). The two clamps (16) are slidably connected to the upper surface of the film-laying platform (5).

9. The coating equipment for producing graphene electrothermal film according to claim 8, characterized in that: The adjustment assembly includes a bidirectional screw (17), two balance rods (18), and two symmetrically arranged adjustment plates (19). The bidirectional screw (17) is arranged parallel to the two balance rods (18) and is located between the two balance rods (18). One end of the bidirectional screw (17) is rotatably connected to the inner wall of one end of the film-laying platform (5), and the other end passes through the two adjustment plates (19) and the inner wall of the other end of the film-laying platform (5) in sequence, and is threadedly connected to the two adjustment plates (19). One end of each of the two balance rods (18) is fixedly connected to the inner wall of one end of the film-laying platform (5), and the other end passes through the two adjustment plates (19) in sequence, and is fixedly connected to the inner wall of the other end of the film-laying platform (5). The two adjustment plates (19) are respectively fixedly connected to the bottom of the two sliders (15).

10. The coating equipment for producing graphene electrothermal film according to claim 9, characterized in that: The bidirectional screw (17) is fixedly connected to a hand-tightening cap (20) at one end of the film-laying platform (5).

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