A fuel cell membrane coating apparatus and coating method thereof

Abstract

The present invention belongs to the technical field of fuel cell manufacturing, and in particular to a fuel cell membrane coating device and a coating method thereof. In view of the problem that the existing coating flows onto the diaphragm through the overflow port, but its overflow is uneven, resulting in a high production failure rate, and the distance between the coating box and the frame is short, which makes it extremely inconvenient to replace the diaphragm, the following scheme is proposed, which includes a frame, a material box is provided on the top of the frame, a coating head is provided on the top of the frame, the coating head is located on one side of the material box, and a drying box is provided on one side of the material box, and the drying box is fixedly connected to the frame. In the present invention, the motor can drive the material roller to discharge the material and drive the spiral rod to convey the coating, so that they can be carried out synchronously, the diaphragm moves the coating and conveys the coating, and the wedge-shaped slide can simultaneously drive the diaphragm to be tensioned and the coating head to be raised and lowered, which is convenient for replacing the diaphragm and the coating is uniform, thereby improving the qualified rate and saving the manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of fuel cell manufacturing technology, and in particular to a fuel cell membrane coating apparatus and coating method. Background Technology

[0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel into electrical energy. The principle of a fuel cell is an electrochemical device, and its composition is the same as a conventional battery. The difference is that in a conventional battery, the active materials are stored inside the battery, thus limiting its capacity. In a fuel cell, the positive and negative electrodes themselves do not contain active materials; they are merely catalytic conversion elements.

[0003] According to the search, the present invention with announcement number CN110993980B discloses a method for preparing fuel cell plates. The present invention achieves continuous production of fuel cell plates by wet coating a mixed coating on carbon fiber sheets and molding them in one step, while reducing the weight of the plates and improving production efficiency.

[0004] The article mentions that its preparation requires a coating process, such as... Figure 9 Existing coating tanks are open with an overflow port at the bottom, through which the coating flows onto the membrane. However, the overflow is uneven, resulting in a high rate of manufacturing defects. Furthermore, the short distance between the coating tank and the frame makes membrane replacement extremely inconvenient. To address these issues, this invention proposes a fuel cell membrane coating device and its coating method. Summary of the Invention

[0005] This invention provides a fuel cell membrane coating device and coating method, which solves the shortcomings of the prior art, where the coating flows onto the membrane through the overflow port but the overflow is uneven, resulting in a high rate of manufacturing defects, and the distance between the coating tank and the frame is small, making it extremely inconvenient to replace the membrane.

[0006] This invention provides the following technical solution:

[0007] A fuel cell membrane coating apparatus, comprising:

[0008] The frame has a material bin on top and a coating head on top of the frame. The coating head is located on one side of the material bin, and a drying box is located on one side of the material bin. The drying box is fixedly connected to the frame and is used to dry the coated film.

[0009] A bracket is slidably provided on one side of the frame, and a material roller is provided inside the bracket. T-shaped frames are fixedly connected to both sides of the frame, and a U-shaped block for supporting the material roller is fixedly connected to the top of the T-shaped frame.

[0010] The extrusion assembly, located at the bottom of the hopper, is used to apply the coating material from the hopper onto the film through the coating head;

[0011] The lifting components, located on both sides of the frame, are used to raise and lower the coating head, making it easier to insert the film.

[0012] In one possible design, the extrusion assembly includes multiple extrusion tubes that are fixedly connected to the bottom of the hopper. A helical rod is rotatably connected to the inner wall of each extrusion tube. A connector is fixedly connected to one side of each extrusion tube. Multiple through holes are opened on one side of each extrusion tube and are arranged in a ring inside the connector. A pipe is fixedly sleeved on the outer wall of the connector. The other end of the pipe is fixedly connected to a coating head. Multiple discharge ports are opened at the bottom of the coating head. A scraper is fixedly connected to the bottom of the coating head and is located to the right of the discharge ports.

[0013] In one possible design, the lifting assembly includes two second slide rods fixedly connected to the top of the frame. The outer walls of the plurality of pipes are fitted with the same concave slide plate, which is slidably fitted onto the two second slide rods. The outer walls of the second slide rods are fitted with second springs, the two ends of which are fixedly connected to the adjacent sides of the second slide rods and the concave slide plate, respectively. The top of the concave slide plate is threadedly connected to a screw, the bottom of which is rotatably connected to a paint head. The paint head is slidably connected to the inner wall of the concave slide plate.

[0014] In one possible design, the bottom of the material box is fixedly connected to two support frames, which are respectively fixedly connected to the machine frame. The outer wall of the screw rod is fixedly fitted with a first bevel gear. The two support frames are rotatably connected to the same rotating shaft on their adjacent sides. The outer wall of the rotating shaft is fixedly fitted with a second bevel gear that meshes with the first bevel gear.

[0015] In one possible design, two electric push rods are provided on one side of the frame, and the output ends of the electric push rods are fixedly connected to the bracket. Two pulleys are rotatably connected to both sides of the bracket. The material roller is placed on four pulleys. A second connecting rod is rotatably connected to both sides of the bracket. A first connecting rod is rotatably connected to both sides of the frame. One end of the second connecting rod is rotatably connected to the first connecting rod. The other end of the first connecting rod is rotatably connected to a first synchronous pulley. A rotating wheel is fixedly sleeved on the outer wall of the first synchronous pulley. A motor is fixedly connected to one side of the frame. The output shaft of the motor and the outer wall of the rotating shaft are both fixedly sleeved with second synchronous pulleys. The outer walls of the first synchronous pulley and the two second synchronous pulleys are driven by the same synchronous belt.

[0016] In one possible design, wedge-shaped slide plates that cooperate with concave slide plates are slidably connected to both sides of the frame. A fourth link is rotatably connected to one side of the frame. A waist-shaped hole is opened on one side of the fourth link. A connecting post is provided on the inner wall of the waist-shaped hole. The connecting post is fixedly connected to the wedge-shaped slide plate. A rotating roller is rotatably connected between the two wedge-shaped slide plates. A third link is rotatably connected to the other end of the bracket. The other end of the third link is rotatably connected to the second link.

[0017] In one possible design, two fixed blocks are fixedly connected to one side of the frame, and a first slide rod is fixedly connected between the two fixed blocks. A sliding block is slidably connected to the outer wall of the first slide rod, and a third synchronous pulley is rotatably connected to one side of the sliding block. The third synchronous pulley abuts against the synchronous belt. A first spring is sleeved on the outer wall of the first slide rod, and the two ends of the first spring are fixedly connected to the sides of the sliding block and the fixed blocks that are close to each other.

[0018] A method for coating a fuel cell membrane includes the following steps:

[0019] S1. First, place the material roller on the two U-shaped blocks, pass the film on the material roller around the rotating roller, and then pass through the material box and paint head in sequence into the drying box. Start the electric push rod. The electric push rod drives the bracket to rise. During the rise, the material roller is lifted off the U-shaped blocks by four pulleys. At the same time, the rise of the bracket can drive the second connecting rod to rotate. The rotation of the second connecting rod can drive the first connecting rod to rotate. The rotation of the first connecting rod can drive the rotating wheel to fix the material roller on the pulley.

[0020] S2. Then, the first connecting rod rotates, causing the first synchronous pulley to move, which in turn causes the synchronous belt to contact the third synchronous pulley. At the same time, the second connecting rod rotates, which in turn causes the third connecting rod to rotate, which in turn causes the fourth connecting rod to rotate. The fourth connecting rod rotates, which causes the connecting column to slide in the oblong hole, thereby causing the wedge-shaped sliding plate to move to the left. At this time, the concave sliding plate moves downward under the action of the second spring. The movement of the concave sliding plate to the left tightens the diaphragm through the rotating roller.

[0021] S3. Then rotate the screw. The wedge-shaped slide can drive the coating head to rise and fall, adjusting to the required coating thickness. Start the motor. The motor can drive the rotating wheel and rotating shaft to rotate through two second synchronous pulleys, the first synchronous pulley, and the synchronous belt. The rotation of the rotating wheel can drive the material roller to rotate. The rotation of the rotating shaft can drive the second bevel gear to rotate. The second bevel gear drives the screw rod to rotate through the first bevel gear. The rotation of the screw rod can squeeze the coating in the material box into the coating head, and then squeeze it onto the film through the discharge port. The film moves while being smoothed by the scraper. The film is dried in the drying box and then enters the next process for further processing.

[0022] S4. When replacing the film, start the electric push rod to lower it. When the material roller contacts the U-shaped block, the U-shaped block can lift the material roller. At the same time, the second connecting rod drives the first connecting rod to rotate, which in turn drives the third connecting rod to rotate. The fourth connecting rod drives the wedge-shaped slide plate to move to the right. The movement of the wedge-shaped slide plate to the right can drive the concave slide plate to rise, thereby driving the coating head to rise, so that the film can be replaced.

[0023] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0024] In this invention, the material roller is placed on two U-shaped blocks, the film on the material roller is passed around the rotating roller, and then passes through the material box and the paint head in sequence, and enters the drying box. The electric push rod is started, and the electric push rod drives the bracket to rise. During the rising process, the material roller is lifted off the U-shaped blocks by four pulleys. At the same time as the bracket rises, it can drive the second connecting rod to rotate. The rotation of the second connecting rod can drive the first connecting rod to rotate. The rotation of the first connecting rod can drive the rotating wheel to fix the material roller on the pulley.

[0025] In this invention, the rotation of the first connecting rod drives the first synchronous pulley to move, causing the synchronous belt to contact the third synchronous pulley. At the same time, the rotation of the second connecting rod can drive the rotation of the third connecting rod, which in turn drives the rotation of the fourth connecting rod. The rotation of the fourth connecting rod can cause the connecting column to slide within the oblong hole, thereby driving the wedge-shaped sliding plate to move to the left. At this time, the concave sliding plate moves downward under the action of the second spring. The movement of the concave sliding plate to the left tightens the diaphragm through the rotating roller.

[0026] In this invention, rotating the screw causes the wedge-shaped sliding plate to raise and lower the coating head to adjust to the required coating thickness. Starting the motor allows the motor to drive a rotating wheel and rotating shaft via two second synchronous pulleys, a first synchronous pulley, and a synchronous belt. The rotating wheel drives the material roller, which in turn drives the second bevel gear. The second bevel gear, through the first bevel gear, drives the screw rod. The rotating screw rod forces the coating material from the hopper into the coating head, which then passes it through the outlet onto a film. The film moves while being smoothed by a scraper. The film is then dried in a drying oven before proceeding to the next processing step.

[0027] In this invention, the electric push rod is activated to descend. When the material roller contacts the U-shaped block, the U-shaped block can lift the material roller. At the same time, the second connecting rod drives the first connecting rod to rotate, which in turn drives the third connecting rod to rotate. The fourth connecting rod drives the wedge-shaped slide plate to move to the right. The movement of the wedge-shaped slide plate to the right can drive the concave slide plate to rise, thereby driving the coating head to rise, so that the film can be replaced.

[0028] In this invention, a motor can drive the material roller to feed material and drive the screw rod to convey coating material, so that they can be carried out simultaneously. The diaphragm moves and the coating material is conveyed. Furthermore, the wedge-shaped slide can simultaneously drive the diaphragm tension and the coating head lifting and lowering, which facilitates diaphragm replacement, ensures uniform coating, improves the pass rate, and saves manufacturing costs. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of a fuel cell membrane coating device provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the feed box structure of a fuel cell membrane coating device provided in an embodiment of the present invention;

[0031] Figure 3 for Figure 2 Schematic diagram of cross-section structure;

[0032] Figure 4 This is a schematic diagram of the coating head structure of a fuel cell membrane coating device provided in an embodiment of the present invention;

[0033] Figure 5 for Figure 4 Schematic diagram of cross-section structure;

[0034] Figure 6 for Figure 1 Schematic diagram of a partial structure;

[0035] Figure 7 for Figure 1 Enlarged structural diagram of section A;

[0036] Figure 8 for Figure 3 Enlarged structural diagram of section B;

[0037] Figure 9 This is a schematic diagram of the existing paint tank structure.

[0038] Figure label:

[0039] 1. Frame; 2. Wedge-shaped slide plate; 4. Drying oven; 5. Material bin; 6. Extrusion tube; 7. Concave slide plate; 8. Pipe; 9. Motor; 10. Bracket; 11. Material roller; 12. Pulley; 13. T-shaped frame; 14. U-shaped block; 15. Screw rod; 16. Support frame; 17. Rotating shaft; 18. Synchronous belt; 19. First bevel gear; 20. Second bevel gear; 21. Connector; 22. Paint head; 23. Screw; 24. Discharge port; 5. Scraper; 26. First connecting rod; 27. Second connecting rod; 28. First synchronous pulley; 29. ​​Second synchronous pulley; 30. Rotating wheel; 31. Fixed block; 32. First sliding rod; 33. Sliding block; 34. Third synchronous pulley; 35. First spring; 36. Electric push rod; 37. Third connecting rod; 38. Rotating roller; 39. Connecting column; 40. Fourth connecting rod; 41. Waist-shaped hole; 42. Through hole; 43. Second sliding rod; 44. Second spring. Detailed Implementation

[0040] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0041] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0042] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0043] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0044] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0045] Example 1

[0046] Reference Figure 1 and Figure 4 A fuel cell membrane coating apparatus, comprising:

[0047] The machine frame 1 has a material box 5 on its top and a coating head 22 on its top. The coating head 22 is located on one side of the material box 5. A drying box 4 is located on one side of the material box 5. The drying box 4 is fixedly connected to the machine frame 1 and is used to dry the coated film.

[0048] A bracket 10 is slidably provided on one side of the frame 1, and a material roller 11 is provided inside the bracket 10. T-shaped frames 13 are fixedly connected to both sides of the frame 1, and a U-shaped block 14 for supporting the material roller 11 is fixedly connected to the top of the T-shaped frame 13.

[0049] An extrusion assembly, located at the bottom of the feed hopper 5, is used to apply the coating material in the feed hopper 5 onto the film through the coating head 22;

[0050] The lifting components are set on both sides of the frame 1 to raise and lower the coating head 22, making it easier to insert the film. In the above technical solution, the coating in the material box 5 can be applied to the film through the coating head 22 by the extrusion component, so that the coating is evenly applied. The lifting components can raise and lower the coating head 22 to facilitate the replacement of the film.

[0051] Reference Figures 2-4The extrusion assembly includes multiple extrusion tubes 6 that are fixedly connected to the bottom of the material box 5. A screw rod 15 is rotatably connected to the inner wall of the extrusion tube 6. A connector 21 is fixedly connected to one side of the extrusion tube 6. Multiple through holes 42 are opened on one side of the extrusion tube 6. The multiple through holes 42 are arranged in a ring inside the connector 21. A pipe 8 is fixedly sleeved on the outer wall of the connector 21. The other end of the pipe 8 is fixedly connected to the coating head 22. Multiple discharge ports 24 are opened at the bottom of the coating head 22. A scraper 25 is fixedly connected to the bottom of the coating head 22. The scraper 25 is located to the right of the discharge ports 24. In the above technical solution, the coating in the extrusion tube 6 can be extruded by rotating the screw rod 15. Then the coating enters the interior of the coating head 22 through the pipe 8 and flows onto the film through the discharge ports 24. The film moves, and the coating on the film can be spread evenly by the scraper 25 to make its thickness uniform.

[0052] Reference Figure 1 , Figure 4 and Figure 5 The lifting assembly includes two second slide rods 43 fixedly connected to the top of the frame 1. The outer walls of multiple pipes 8 are fitted with the same concave slide plate 7. The concave slide plate 7 is slidably fitted on the two second slide rods 43. The outer walls of the second slide rods 43 are fitted with second springs 44. The two ends of the second springs 44 are fixedly connected to the adjacent sides of the second slide rods 43 and the concave slide plate 7, respectively. The top of the concave slide plate 7 is threadedly connected with a screw 23. The bottom of the screw 23 is rotatably connected to the coating head 22. The coating head 22 is slidably connected to the inner wall of the concave slide plate 7. In the above technical solution, rotating the screw 23 can drive the coating head 22 to move within the concave slide plate 7, which can be adjusted according to the required thickness to facilitate adjustment.

[0053] Example 2

[0054] Reference Figure 1 and Figure 4 A fuel cell membrane coating apparatus, comprising:

[0055] The machine frame 1 has a material box 5 on its top and a coating head 22 on its top. The coating head 22 is located on one side of the material box 5. A drying box 4 is located on one side of the material box 5. The drying box 4 is fixedly connected to the machine frame 1 and is used to dry the coated film.

[0056] A bracket 10 is slidably provided on one side of the frame 1, and a material roller 11 is provided inside the bracket 10. T-shaped frames 13 are fixedly connected to both sides of the frame 1, and a U-shaped block 14 for supporting the material roller 11 is fixedly connected to the top of the T-shaped frame 13.

[0057] An extrusion assembly, located at the bottom of the feed hopper 5, is used to apply the coating material in the feed hopper 5 onto the film through the coating head 22;

[0058] The lifting components are set on both sides of the frame 1 to raise and lower the coating head 22, making it easier to insert the film. In the above technical solution, the coating in the material box 5 can be applied to the film through the coating head 22 by the extrusion component, so that the coating is evenly applied. The lifting components can raise and lower the coating head 22 to facilitate the replacement of the film.

[0059] Reference Figures 2-4 The extrusion assembly includes multiple extrusion tubes 6 that are fixedly connected to the bottom of the material box 5. A screw rod 15 is rotatably connected to the inner wall of the extrusion tube 6. A connector 21 is fixedly connected to one side of the extrusion tube 6. Multiple through holes 42 are opened on one side of the extrusion tube 6. The multiple through holes 42 are arranged in a ring inside the connector 21. A pipe 8 is fixedly sleeved on the outer wall of the connector 21. The other end of the pipe 8 is fixedly connected to the coating head 22. Multiple discharge ports 24 are opened at the bottom of the coating head 22. A scraper 25 is fixedly connected to the bottom of the coating head 22. The scraper 25 is located to the right of the discharge ports 24. In the above technical solution, the coating in the extrusion tube 6 can be extruded by rotating the screw rod 15. Then the coating enters the interior of the coating head 22 through the pipe 8 and flows onto the film through the discharge ports 24. The film moves, and the coating on the film can be spread evenly by the scraper 25 to make its thickness uniform.

[0060] Reference Figure 1 , Figure 4 and Figure 5 The lifting assembly includes two second slide rods 43 fixedly connected to the top of the frame 1. The outer walls of multiple pipes 8 are fitted with the same concave slide plate 7. The concave slide plate 7 is slidably fitted on the two second slide rods 43. The outer walls of the second slide rods 43 are fitted with second springs 44. The two ends of the second springs 44 are fixedly connected to the adjacent sides of the second slide rods 43 and the concave slide plate 7, respectively. The top of the concave slide plate 7 is threadedly connected with a screw 23. The bottom of the screw 23 is rotatably connected to the coating head 22. The coating head 22 is slidably connected to the inner wall of the concave slide plate 7. In the above technical solution, rotating the screw 23 can drive the coating head 22 to move within the concave slide plate 7, which can be adjusted according to the required thickness to facilitate adjustment.

[0061] Reference Figure 2 Two support frames 16 are fixedly connected to the bottom of the material box 5. The support frames 16 are fixedly connected to the frame 1. A first bevel gear 19 is fixedly sleeved on the outer wall of the screw rod 15. The same rotating shaft 17 is rotatably connected through the two support frames 16 on their adjacent sides. A second bevel gear 20 that meshes with the first bevel gear 19 is fixedly sleeved on the outer wall of the rotating shaft 17. In the above technical solution, rotating the rotating shaft 17 can drive multiple second bevel gears 20 to rotate. The second bevel gears 20 can drive the screw rod 15 to rotate through the first bevel gear 19, so that multiple screw rods 15 can rotate at the same time, and the extrusion feeding speed is more uniform and consistent.

[0062] Reference Figure 1 , Figure 2 and Figure 6 Two electric push rods 36 are provided on one side of the frame 1. The output ends of the electric push rods 36 are fixedly connected to the bracket 10. Two pulleys 12 are rotatably connected to both sides of the bracket 10. The material roller 11 is placed on the four pulleys 12. A second connecting rod 27 is rotatably connected to both sides of the bracket 10. A first connecting rod 26 is rotatably connected to both sides of the frame 1. One end of the second connecting rod 27 is rotatably connected to one end of the first connecting rod 26. The other end of the first connecting rod 26 is rotatably connected to a first synchronous pulley 28. A rotating wheel 30 is fixedly sleeved on the outer wall of the first synchronous pulley 28. A motor 9 is fixedly connected to one side of the frame 1. The output shaft of the motor 9 and the outer wall of the rotating shaft 17 are both fixedly sleeved with a second synchronous pulley 30. The outer walls of the step wheel 29, the first synchronous wheel 28, and the two second synchronous wheels 29 are connected by the same synchronous belt 18. In the above technical solution, the bracket 10 can be driven to rise by the electric push rod 36. The rise of the bracket 10 can drive the second connecting rod 27 to rotate. The rotation of the second connecting rod 27 can drive the first connecting rod 26 to rotate. Thus, the material roller 11 is pressed onto the four pulleys 12 by the rotating wheel 30. The rotating wheel 30 can be driven to rotate by the motor 9. The outer walls of the rotating wheel 30 and the material roller 11 can be provided with anti-slip texture to increase the friction between the rotating wheel 30 and the material roller 11, thereby driving the material roller 11 to rotate and dispensing the film on the material roller 11.

[0063] Reference Figure 1 , Figure 6 and Figure 7 The frame 1 has wedge-shaped slide plates 2 that cooperate with concave slide plates 7 slidably connected to both sides. A fourth connecting rod 40 is rotatably connected to one side of the frame 1. A waist-shaped hole 41 is opened on one side of the fourth connecting rod 40. A connecting post 39 is provided on the inner wall of the waist-shaped hole 41. The connecting post 39 is fixedly connected to the wedge-shaped slide plate 2. A rotating roller 38 is rotatably connected between the two wedge-shaped slide plates 2. A third connecting rod 37 is rotatably connected to the other end of the bracket 10. The other end of the third connecting rod 37 is rotatably connected to the second connecting rod 27. In the above technical solution, the rotation of the second connecting rod 27 can drive the third connecting rod 37 to rotate. The rotation of the third connecting rod 37 can drive the fourth connecting rod 40 to rotate. Thus, the wedge-shaped slide plate 2 can be moved by the cooperation of the waist-shaped hole 41 and the connecting post 39. The movement of the wedge-shaped slide plate 2 can drive the concave slide plate 7 to rise and fall. The diaphragm can also be tensioned by the rotating roller 38 to facilitate its use.

[0064] Reference Figure 6Two fixed blocks 31 are fixedly connected to one side of the frame 1. A first slide rod 32 is fixedly connected between the two fixed blocks 31. A slide block 33 is slidably connected to the outer wall of the first slide rod 32. A third synchronous pulley 34 is rotatably connected to one side of the slide block 33. The third synchronous pulley 34 abuts against the synchronous belt 18. A first spring 35 is sleeved on the outer wall of the first slide rod 32. The two ends of the first spring 35 are fixedly connected to the sides of the slide block 33 and the fixed blocks 31 that are close to each other, respectively. In the above technical solution, the first spring 35 abuts against the slide block 33 and moves upward, so that the synchronous belt 18 can be tightened by the third synchronous pulley 34, so that the synchronous belt 18 is always in a taut state, which facilitates the motor 9 to transmit power to the rotating shaft 17 and the rotating pulley 30.

[0065] A method for coating a fuel cell membrane includes the following steps:

[0066] S1. First, place the material roller 11 on the two U-shaped blocks 14, and let the film on the material roller 11 pass around the rotating roller 38 and pass through the material box 5 and the paint head 22 in sequence, and enter the drying box 4. Start the electric push rod 36. The electric push rod 36 drives the bracket 10 to rise. During the rising process, the material roller 11 is lifted from the U-shaped blocks 14 through the four pulleys 12. At the same time, the rise of the bracket 10 can drive the second connecting rod 27 to rotate. The rotation of the second connecting rod 27 can drive the first connecting rod 26 to rotate. The rotation of the first connecting rod 26 can drive the rotating wheel 30 to fix the material roller 11 on the pulley 12.

[0067] S2. Then, the first connecting rod 26 rotates, causing the first synchronous pulley 28 to move, which in turn causes the synchronous belt 18 to abut against the third synchronous pulley 34. At the same time, the second connecting rod 27 rotates, which can drive the third connecting rod 37 to rotate. The third connecting rod 37 rotates, which can drive the fourth connecting rod 40 to rotate. The fourth connecting rod 40 rotates, which can drive the connecting column 39 to slide in the waist-shaped hole 41, thereby driving the wedge-shaped slide plate 2 to move to the left. At this time, the concave slide plate 7 moves downward under the force of the second spring 44. The concave slide plate 7 moves to the left and tightens the diaphragm through the rotating roller 38.

[0068] S3. Then rotate the screw 23. The wedge-shaped slide plate 2 can drive the paint head 22 to rise and fall, adjusting to the required coating thickness. Start the motor 9. The motor 9 can drive the rotating wheel 30 and the rotating shaft 17 to rotate through two second synchronous pulleys 29, the first synchronous pulley 28 and the synchronous belt 18. The rotation of the rotating wheel 30 can drive the material roller 11 to rotate. The rotation of the rotating shaft 17 can drive the second bevel gear 20 to rotate. The second bevel gear 20 drives the screw rod 15 to rotate through the first bevel gear 19. The rotation of the screw rod 15 can squeeze the paint in the material box 5 into the paint head 22, and then squeeze it onto the film through the discharge port 24. The film moves while being smoothed by the scraper 25. The film is dried through the drying box 4 and then enters the next process for further processing.

[0069] S4. When replacing the diaphragm, start the electric push rod 36 to descend. When the material roller 11 contacts the U-shaped block 14, the U-shaped block 14 can lift the material roller 11. At the same time, the second connecting rod 27 drives the first connecting rod 26 to rotate, which in turn drives the third connecting rod 37 to rotate. The fourth connecting rod 40 drives the wedge-shaped slide plate 2 to move to the right. The movement of the wedge-shaped slide plate 2 to the right can drive the concave slide plate 7 to rise, thereby driving the coating head 22 to rise, so that the diaphragm can be replaced.

[0070] However, as is well known to those skilled in the art, the working principles and wiring methods of the drying oven 4, motor 9 and electric push rod 36 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0071] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fuel cell membrane coating apparatus, characterized in that, include: A frame (1) is provided with a material box (5) on the top of the frame (1) and a coating head (22) on the top of the frame (1). The coating head (22) is located on one side of the material box (5). A drying box (4) is provided on one side of the material box (5). The drying box (4) is fixedly connected to the frame (1) and is used to dry the coated film. A bracket (10) is slidably provided on one side of the frame (1), and a material roller (11) is provided inside the bracket (10). T-shaped frames (13) are fixedly connected to both sides of the frame (1), and a U-shaped block (14) for supporting the material roller (11) is fixedly connected to the top of the T-shaped frame (13). An extrusion assembly, located at the bottom of the hopper (5), is used to apply the coating material in the hopper (5) onto the film through the coating head (22); Lifting components are set on both sides of the frame (1) to lift the coating head (22) so that it can easily insert the film; The extrusion assembly includes multiple extrusion tubes (6) that are fixedly connected to the bottom of the material box (5). A screw rod (15) is rotatably connected to the inner wall of the extrusion tube (6). A connector (21) is fixedly connected to one side of the extrusion tube (6). Multiple through holes (42) are opened on one side of the extrusion tube (6). The multiple through holes (42) are arranged in a ring inside the connector (21). A pipe (8) is fixedly sleeved on the outer wall of the connector (21). The other end of the pipe (8) is fixedly connected to the coating head (22). Multiple discharge ports (24) are opened at the bottom of the coating head (22). A scraper (25) is fixedly connected to the bottom of the coating head (22). The scraper (25) is located to the right of the discharge port (24). The lifting assembly includes two second slide rods (43) fixedly connected to the top of the frame (1). The outer walls of the multiple pipes (8) are fitted with the same concave slide plate (7). The concave slide plate (7) is slidably fitted on the two second slide rods (43). The outer walls of the second slide rods (43) are fitted with second springs (44). The two ends of the second springs (44) are fixedly connected to the adjacent sides of the second slide rods (43) and the concave slide plate (7), respectively. The top of the concave slide plate (7) is threadedly connected with a screw (23). The bottom of the screw (23) is rotatably connected to the paint head (22). The paint head (22) is slidably connected to the inner wall of the concave slide plate (7). Two electric push rods (36) are provided on one side of the frame (1). The output ends of the electric push rods (36) are fixedly connected to the bracket (10). Two pulleys (12) are rotatably connected to both sides of the bracket (10). The material roller (11) is placed on the four pulleys (12). A second connecting rod (27) is rotatably connected to both sides of the bracket (10). A first connecting rod (26) is rotatably connected to both sides of the frame (1). One end of the second connecting rod (27) is rotatably connected to one end of the first connecting rod (26). The other end of the first connecting rod (26) is rotatably connected to a first synchronous pulley (28). A rotating wheel (30) is fixedly sleeved on the outer wall of the first synchronous pulley (28). A motor (9) is fixedly connected to one side of the frame (1). A second synchronous pulley (29) is fixedly sleeved on the outer wall of the output shaft of the motor (9) and the rotating shaft (17). The outer walls of the first synchronous pulley (28) and the two second synchronous pulleys (29) are connected to the same synchronous belt (18). The frame (1) is slidably connected to two sides of a wedge-shaped slide plate (2) that works with a concave slide plate (7). A fourth link (40) is rotatably connected to one side of the frame (1). A waist-shaped hole (41) is provided on one side of the fourth link (40). A connecting column (39) is provided on the inner wall of the waist-shaped hole (41). The connecting column (39) is fixedly connected to the wedge-shaped slide plate (2). A rotating roller (38) is rotatably connected between the two wedge-shaped slide plates (2). A third link (37) is rotatably connected to the other end of the bracket (10). The other end of the third link (37) is rotatably connected to the second link (27).

2. The fuel cell membrane coating apparatus according to claim 1, characterized in that, The bottom of the material box (5) is fixedly connected to two support frames (16), which are respectively fixedly connected to the frame (1). The outer wall of the spiral rod (15) is fixedly sleeved with a first bevel gear (19). The two support frames (16) are rotatably connected to the same rotating shaft (17) on their adjacent sides. The outer wall of the rotating shaft (17) is fixedly sleeved with a second bevel gear (20) that meshes with the first bevel gear (19).

3. The fuel cell membrane coating apparatus according to claim 2, characterized in that, Two fixed blocks (31) are fixedly connected to one side of the frame (1). A first slide rod (32) is fixedly connected between the two fixed blocks (31). A sliding block (33) is slidably connected to the outer wall of the first slide rod (32). A third synchronous wheel (34) is rotatably connected to one side of the sliding block (33). The third synchronous wheel (34) abuts against the synchronous belt (18). A first spring (35) is sleeved on the outer wall of the first slide rod (32). The two ends of the first spring (35) are fixedly connected to the sliding block (33) and the fixed block (31) respectively on the side that is close to each other.

4. The coating method of the fuel cell membrane coating apparatus according to claim 3, characterized in that, Includes the following steps: S1. First, place the material roller (11) on the two U-shaped blocks (14), and pass the film on the material roller (11) around the rotating roller (38) and through the material box (5) and the paint head (22) in sequence, and enter the drying box (4). Start the electric push rod (36). The electric push rod (36) drives the bracket (10) to rise. During the rise, the material roller (11) is lifted from the U-shaped block (14) by four pulleys (12). The rise of the bracket (10) can drive the second connecting rod (27) to rotate. The rotation of the second connecting rod (27) can drive the first connecting rod (26) to rotate. The rotation of the first connecting rod (26) can drive the rotating wheel (30) to fix the material roller (11) on the pulley (12). S2. Then the first link (26) rotates and drives the first synchronous wheel (28) to move, which drives the synchronous belt (18) to abut against the third synchronous wheel (34). At the same time, the second link (27) rotates and can drive the third link (37) to rotate. The third link (37) rotates and can drive the fourth link (40) to rotate. The fourth link (40) rotates and can drive the connecting column (39) to slide in the waist-shaped hole (41), which can drive the wedge-shaped slide plate (2) to move to the left. At this time, the concave slide plate (7) moves downward under the force of the second spring (44). The concave slide plate (7) moves to the left and tightens the diaphragm through the rotating roller (38). S3. Then rotate the screw (23), and the wedge-shaped slide plate (2) can drive the paint head (22) to rise and fall, adjust to the required coating thickness, start the motor (9), the motor (9) can drive the rotating wheel (30) and rotating shaft (17) to rotate through two second synchronous pulleys (29), the first synchronous pulley (28) and the synchronous belt (18), the rotating wheel (30) can drive the material roller (11) to rotate, the rotating shaft (17) can drive the second bevel gear (20) to rotate, the second bevel gear (20) drives the screw rod (15) to rotate through the first bevel gear (19), the rotating screw rod (15) can squeeze the paint in the material box (5) into the paint head (22), and then squeeze it onto the film through the discharge port (24). The film moves while being smoothed by the scraper (25) and continues to be conveyed. The film is dried through the drying box (4) and then enters the next process for further processing. S4. When replacing the diaphragm, start the electric push rod (36) to descend. When the material roller (11) contacts the U-shaped block (14), the material roller (11) can be lifted by the U-shaped block (14). At the same time, the first connecting rod (26) is driven to rotate by the second connecting rod (27), which in turn drives the third connecting rod (37) to rotate. The wedge-shaped sliding plate (2) is driven to move to the right by the fourth connecting rod (40). The movement of the wedge-shaped sliding plate (2) to the right can drive the concave sliding plate (7) to rise, thereby driving the coating head (22) to rise, so that the diaphragm can be replaced.

Images