Diaphragm coating device

Abstract

The utility model discloses a diaphragm coating device which comprises a coating mechanism, the coating mechanism comprises two coating frames, a gravure roller assembly, a proximity roller assembly and a material box assembly, the two coating frames are oppositely arranged front and back, and the material box assembly, the gravure roller assembly and the proximity roller assembly are sequentially arranged on the two coating frames from left to right. The gravure roller assembly is used for coating a diaphragm with slurry, the approaching roller assembly is used for driving the diaphragm to move in the direction close to or away from the gravure roller assembly so as to press the diaphragm on the gravure roller assembly or separate the diaphragm from the gravure roller assembly, and the material box assembly is used for providing the slurry for the gravure roller assembly. The traction mechanism is arranged on the left side of the coating mechanism along the walking path of the diaphragm, the traction mechanism comprises two traction frames which are oppositely arranged front and back, a traction flattening roller assembly and a traction adsorption roller assembly, and the traction flattening roller assembly and the traction adsorption roller assembly are sequentially arranged on the two traction frames from left to right along the walking path of the diaphragm. According to the utility model, the diaphragm coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery diaphragm coating, in particular to a diaphragm coating device. Background Art

[0002] Currently, the diaphragm coating equipment used for high-speed coating of diaphragms generally includes an unwinding device for unwinding the diaphragm, a preheating oven for preheating the unwound diaphragm, a diaphragm coating device for coating the preheated diaphragm, an oven for drying the coated diaphragm, and a winding device for winding the dried diaphragm.

[0003] Among them, the diaphragm coating device generally includes a coating mechanism, which includes two coating racks, a gravure roller assembly, an approach roller assembly and a material box assembly arranged in a front-to-back relationship. The material box assembly, the gravure roller assembly and the approach roller assembly are arranged on the two coating racks from left to right. The gravure roller assembly is used to apply the slurry to the diaphragm, and the approach roller assembly is used to drive the diaphragm to move toward or away from the gravure roller assembly to press the diaphragm on the gravure roller assembly or separate it from the gravure roller assembly. The material box assembly is used to provide slurry to the gravure roller assembly. In actual application, after the diaphragm comes out of the preheating oven and bypasses the approach roller assembly, the diaphragm is first driven by the approach roller assembly to move toward the direction close to the gravure roller assembly to press the diaphragm on the gravure roller assembly, and then the slurry can be applied to the diaphragm through the gravure roller assembly, thereby achieving coating of the diaphragm.

[0004] In the above structure, since the diaphragm directly passes over the approach roller assembly after coming out of the preheating oven, and the diaphragm moves at high speed, the diaphragm often wrinkles and moves unstably in the process of the approach roller assembly driving the diaphragm to move toward the gravure roller assembly, thereby reducing the quality of the diaphragm coating. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a diaphragm coating device, which improves the quality of diaphragm coating.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A diaphragm coating device includes a coating mechanism, the coating mechanism includes two coating frames, a gravure roller assembly, an approach roller assembly and a material box assembly arranged in a front-to-back relationship, the material box assembly, the gravure roller assembly and the approach roller assembly are arranged in sequence on the two coating frames from left to right, the gravure roller assembly is used to coat the slurry onto the diaphragm, the approach roller assembly is used to drive the diaphragm to move in a direction close to or away from the gravure roller assembly to press the diaphragm onto the gravure roller assembly or separate it from the gravure roller assembly, the material box assembly is used to provide slurry to the gravure roller assembly, and also includes a traction mechanism arranged on the left side of the coating mechanism along the walking path of the diaphragm, the traction mechanism includes two traction frames, a traction flattening roller assembly and a traction adsorption roller assembly arranged in a front-to-back relationship, the traction flattening roller assembly and the traction adsorption roller assembly are arranged in sequence on the two traction frames from left to right along the walking path of the diaphragm.

[0008] As a preferred technical solution, the traction flattening roller assembly includes a flattening roller, a flattening roller drive motor and a flattening roller synchronous belt module. The two ends of the flattening roller are rotatably arranged on two flattening roller bearing seats, and the two flattening roller bearing seats are respectively arranged on the two traction frames through two flattening roller fixing plates. The flattening roller drive motor is arranged on one of the flattening roller fixing plates and is connected to one end of the flattening roller through the flattening roller synchronous belt module. The flattening roller drive motor is used to drive the flattening roller to rotate through the flattening roller synchronous belt module.

[0009] As a preferred technical solution, the traction and adsorption roller assembly includes an adsorption roller, an adsorption roller driving motor and an adsorption roller synchronous belt module. The adsorption roller includes a hollow roller, a fixed shaft and a rotating shaft, and the outer circumferential surface of the roller is evenly provided with a plurality of adsorption holes, and the plurality of adsorption holes are connected to the interior of the roller. One end of the fixed shaft is arranged in one end of the roller, and a fixed shaft bearing is provided in one end of the roller, and the fixed shaft bearing is sleeved on the outer circumference of one end of the fixed shaft, and the other end of the fixed shaft is arranged on one of the traction frames, and a joint is provided on the outer circumferential surface of the fixed shaft, and a channel is provided in the interior of the fixed shaft, and the channel is respectively connected with the joint and the interior of the roller, one end of the rotating shaft is arranged in the other end of the roller, and the other end of the rotating shaft passes through the rotating shaft through hole of the other traction frame and is connected to the adsorption roller driving motor through the adsorption roller synchronous belt module. The adsorption roller driving motor is arranged on the other traction frame and is used to drive the rotating shaft to rotate through the adsorption roller synchronous belt module, thereby driving the roller to rotate relative to the fixed shaft.

[0010] As a preferred technical solution, the coating mechanism also includes a first coating roller, an iron removal assembly, an anti-static assembly, a second coating roller, a third coating roller, a coating flattening roller assembly, a fourth coating roller and a coating adsorption roller assembly arranged on the two coating racks. The first coating roller is located below the material box assembly and close to the side of the coating rack close to the traction mechanism, the third coating roller is located below the approach roller assembly and above the first coating roller, and the third coating roller is close to the side of the coating rack away from the traction mechanism. The iron removal assembly, the anti-static assembly, and the second coating roller are sequentially arranged between the first coating roller and the third coating roller along the walking path of the diaphragm. The coating flattening roller assembly and the fourth coating roller are sequentially arranged between the third coating roller and the approach roller assembly along the walking path of the diaphragm, and the coating adsorption roller assembly is arranged above the approach roller assembly along the walking path of the diaphragm.

[0011] As a preferred technical solution, the coating mechanism also includes a semi-active roller assembly, which includes a semi-active roller, a semi-active roller drive motor and a semi-active roller synchronous belt module. Two semi-active roller frames are respectively provided on the side and top of the two coating frames away from the traction mechanism. The two semi-active roller frames are arranged relative to each other in front and back. The semi-active roller includes a roller shaft and a roller body rotatably sleeved on the outer circumference of the roller shaft. One end of the roller shaft is rotatably set in the mounting hole of one of the semi-active roller frames, and the other end of the roller shaft passes through the mounting hole of the other semi-active roller frame and passes through The semi-active roller synchronous belt module is connected to the semi-active roller drive motor, and the semi-active roller drive motor is arranged on another semi-active roller frame and is used to drive the roller shaft to rotate through the semi-active roller synchronous belt module. The outer peripheral fixed sleeve of the roller shaft is provided with two connecting parts, and the roller body is located between the two connecting parts. The two ends of the roller body are respectively in contact with the two connecting parts, and the connecting part is provided with a first mounting hole. The two ends of the roller body are respectively provided with second mounting holes corresponding to the first mounting holes of the two connecting parts, and fasteners are installed in the second mounting holes and the corresponding first mounting holes.

[0012] As a preferred technical solution, the gravure roller assembly includes a gravure roller, a gravure roller drive motor and a gravure roller synchronous belt module. One end of the gravure roller is rotatably arranged in the through hole of one of the coating racks, and the other end of the gravure roller passes through the through hole of the other coating rack and is connected to the gravure roller drive motor through the gravure roller synchronous belt module. The gravure roller drive motor is arranged on the other coating rack and is used to drive the gravure roller to rotate through the gravure roller synchronous belt module.

[0013] As a preferred technical solution, the approach roller assembly includes two mounting plates arranged front to back, two approach rollers arranged side by side up and down, and two approach roller driving cylinders. The two mounting plates are located between the two coating frames and are slidably arranged on the two coating frames respectively. The two ends of the two approach rollers are rotatably arranged on the two mounting plates respectively. The two approach rollers are respectively opposite to the gravure rollers. The two approach roller driving cylinders are respectively arranged on the two coating frames. The output ends of the two approach roller driving cylinders are respectively connected to the two mounting plates. The two approach roller driving cylinders are respectively used to drive the two mounting plates to move toward or away from the gravure roller assembly, thereby driving the two approach rollers to move toward or away from the gravure roller assembly.

[0014] As a preferred technical solution, the diaphragm coating device also includes a feeding mechanism for supplying slurry to the material box assembly, the material box assembly includes a material box, both ends of the material box are respectively arranged on the two coating frames, an arc-shaped groove is provided on the side of the material box close to the gravure roller assembly, the inner wall of the arc-shaped groove cooperates with the outer circumferential surface of the gravure roller and is provided with a discharge port corresponding to the gravure roller, the discharge port is connected with the interior of the material box, and a side of the material box away from the gravure roller assembly is provided with multiple feed ports and multiple return ports, and the multiple feed ports are all connected to a feed pipe, the feed ports are respectively connected with the interior of the material box and the feed pipe, a feed joint is provided on the feed pipe, the feed joint is connected with the feed pipe, and multiple return ports are all connected with a return pipe, the return ports are respectively connected with the interior of the material box and the return pipe, a return joint is provided on the return pipe, the return joint is connected with the return pipe, and the feed joint and return joint are connected to the feeding mechanism through the feed pipe and the return pipe, respectively.

[0015] As a preferred technical solution, the feeding mechanism includes a feeding base, a material barrel, a material cover, a stirring motor, a stirring piece, a multi-chamber pump and a filter. The bottom end of the feeding base is provided with a universal wheel, and the top of the feeding base is provided with a push rod. The material barrel, multi-chamber pump and filter are arranged in sequence on the top of the feeding base in a direction away from the push rod. The material cover is covered on the top of the material barrel, the stirring motor is arranged on the top of the material cover, the stirring piece is located in the material barrel, the output end of the stirring motor passes through the through hole of the material cover and is connected to the stirring piece, the material barrel and the multi-chamber pump are connected by a first pipe, the multi-chamber pump and the filter are connected by a second pipe, and the feed joint and the return joint are connected to the filter through the feed pipe and the return pipe respectively.

[0016] As a preferred technical solution, the diaphragm coating device also includes a roller mechanism arranged between the traction mechanism and the coating mechanism along the travel path of the diaphragm, and the roller mechanism includes a plurality of traction rollers, which are arranged in sequence from left to right along the travel path of the diaphragm, and the outer peripheral surface of the traction roller is evenly provided with a plurality of exhaust grooves.

[0017] The beneficial effects of the present invention are as follows: the present invention sets up a traction mechanism, which includes a traction flattening roller assembly and a traction adsorption roller assembly. After the diaphragm comes out of the preheating oven and before it passes around the approach roller assembly, the diaphragm is flattened and wrinkle-removed by the traction flattening roller assembly, and the diaphragm is pulled and adsorbed by the traction adsorption roller assembly. The tension of the diaphragm can be isolated by adsorbing the diaphragm, thereby ensuring the stability of the diaphragm when it moves at high speed. In this way, when the diaphragm is driven by the approach roller assembly to move toward the gravure roller assembly, the diaphragm will not wrinkle or move unstably, thereby improving the quality of diaphragm coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a structural schematic diagram of a membrane coating device provided by one embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 A schematic cross-sectional view of two traction frames and a traction flattening roller assembly of a traction mechanism of a diaphragm coating device;

[0021] Figure 3 yes Figure 1 A schematic cross-sectional view of two traction frames and a traction adsorption roller assembly of a traction mechanism of a diaphragm coating device;

[0022] Figure 4 yes Figure 1 A schematic cross-sectional view of a traction roller of a roller mechanism of a diaphragm coating device;

[0023] Figure 5 yes Figure 1 A schematic cross-sectional view of a gravure roller assembly and two coating racks of a coating mechanism of a diaphragm coating device is shown;

[0024] Figure 6 yes Figure 1 A schematic cross-sectional view of an approach roller assembly of a coating mechanism of the diaphragm coating device shown;

[0025] Figure 7 yes Figure 1 A schematic structural diagram of a cartridge assembly of a coating mechanism of a diaphragm coating device is shown;

[0026] Figure 8yes Figure 1 A schematic cross-sectional view of a semi-active roller assembly of a coating mechanism of a diaphragm coating device;

[0027] Figure 9 yes Figure 1 Schematic diagram of the structure of the feeding mechanism of the diaphragm coating device shown. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0029] Please refer to Figure 1 and Figure 9 One embodiment of the present invention provides a membrane coating device comprising a traction mechanism 10, a roller mechanism 20, a coating mechanism 30, and a feeding mechanism 40. The traction mechanism 10, the roller mechanism 20, and the coating mechanism 30 are arranged sequentially from left to right along the travel path of the membrane 100. The feeding mechanism 40 is located to one side of the coating mechanism 30, such as to the right or behind it. It is understood that the position of the feeding mechanism 40 can be adjusted according to actual circumstances.

[0030] The traction mechanism 10 includes two traction frames 11 arranged in a front-to-rear relationship, a traction flattening roller assembly 12, and a traction suction roller assembly 13. The traction flattening roller assembly 12 and the traction suction roller assembly 13 are arranged on the two traction frames 11 in sequence from left to right along the travel path of the diaphragm 100. The traction flattening roller assembly 12 is used to flatten and dewrinkle the diaphragm 100, thereby preventing wrinkles. The traction suction roller assembly 13 is used to traction and suction the diaphragm 100. By suctioning the diaphragm 100, the tension of the diaphragm 100 is isolated, ensuring the stability of the diaphragm 100 during high-speed travel.

[0031] In this embodiment, combined with Figure 2As shown, the traction flattening roller assembly 12 includes a flattening roller 121, a flattening roller drive motor 122, and a flattening roller synchronous belt module. The flattening roller 121 is located between the two traction frames 11. The two ends of the flattening roller 121 are rotatably mounted on two flattening roller bearing blocks 1211. The two flattening roller bearing blocks 1211 are mounted on the two traction frames 11 via two flattening roller fixing plates 1212. The two flattening roller fixing plates 1212 are positioned front-to-back in a facing relationship. The flattening roller drive motor 122 is mounted on one of the flattening roller fixing plates 1212, such as the front flattening roller fixing plate 1212, via a flattening roller motor block. It is connected to one end of the flattening roller 121 via the flattening roller synchronous belt module. The flattening roller drive motor 122 is used to drive the flattening roller 121 to rotate via the flattening roller synchronous belt module. The rotation of the flattening roller 121 flattens and dewrinkles the diaphragm 100 that passes over it.

[0032] The flattening roller synchronous belt module includes a flattening roller driving pulley 1231, a flattening roller driven pulley 1232, and a flattening roller synchronous belt mounted around the outer circumferences of the flattening roller driving pulley 1231 and the flattening roller driven pulley 1232. The flattening roller driving pulley 1231 is mounted around the outer circumference of the output end of the flattening roller drive motor 122, while the flattening roller driven pulley 1232 is mounted around the outer circumference of one end of the flattening roller 121. The flattening roller drive motor 122 is used to drive the flattening roller driving pulley 1231 to rotate. Under the action of the flattening roller driven pulley 1232 and the flattening roller synchronous belt, the exhibit roller 121 is driven to rotate.

[0033] Combine Figure 3As shown, the traction roller assembly 13 includes a suction roller 131, a suction roller drive motor, and a suction roller synchronous belt module. The suction roller 131 includes a hollow roller 1311, a fixed shaft 1312, and a rotating shaft 1313. The roller 1311 is located between the two traction frames 11. The outer circumference of the roller 1311 is evenly provided with a plurality of suction holes, each of which is connected to the interior of the roller 1311. The number of suction holes can be set according to actual conditions. One end of the fixed shaft 1312 is disposed within one end of the roller 1311. A fixed shaft bearing is disposed within one end of the roller 1311, and the fixed shaft bearing is sleeved around the outer circumference of one end of the fixed shaft 1312. The other end of fixed shaft 1312 is mounted on one of the traction frames 11, such as the rear traction frame 11. Specifically, the rear traction frame 11 is provided with a fixed shaft through-hole, within which is a fixed seat 13121. Fixed seat 13121 partially extends from the fixed shaft through-hole and is mounted on the rear traction frame 11, providing mounting support for fixed shaft 1312. The other end of fixed shaft 1312 is mounted on fixed seat 13121. A joint is provided on the outer circumference of fixed shaft 1312, and a channel is provided within fixed shaft 1312, which communicates with the joint and the interior of roller 1311, respectively. The joint is used to connect to a vacuum pump. One end of rotating shaft 1313 is mounted within the other end of roller 1311. The other end of rotating shaft 1313 passes through the rotating shaft through-hole of another traction frame 11, such as the front traction frame 11, and is connected to the suction roller drive motor via the suction roller synchronous belt module. The suction roller drive motor is mounted on another traction frame 11, such as the front traction frame 11, via a suction roller motor mount. The motor is used to drive the rotating shaft 1313 via the suction roller synchronous belt module, thereby driving the roller 1311 to rotate relative to the fixed shaft 1312. In actual use, when the diaphragm 100 passes over the roller 1311, a vacuum is applied to the suction holes through the joint, channel, and interior of the roller 1311, thereby adsorbing the diaphragm 100 through the suction holes and isolating the tension of the diaphragm 100. The vacuum is then stopped through the joint, channel, and interior of the roller 1311, thereby releasing the diaphragm 100 through the suction holes. The rotation of the roller 1311 thereby traction is achieved. A shaft bearing seat 13131 is provided in the shaft through hole, and the shaft bearing seat 13131 is sleeved on the outer periphery of the shaft 1313 and a portion of the shaft bearing seat 13131 extends out from the shaft through hole and is provided on the traction frame 11 located in the front. The provided shaft bearing seat 13131 provides support for the rotation of the shaft 1313, thereby improving the stability of the rotation of the shaft 1313, and further improving the stability of the rotation of the roller 1311.

[0034] The suction roller synchronous belt module includes a suction roller driving wheel, a suction roller driven wheel 132, and a suction roller synchronous belt that fits around the outer circumference of the suction roller driving wheel and the suction roller driven wheel 132. The suction roller driving wheel fits around the outer circumference of the output end of the suction roller drive motor, while the suction roller driven wheel 132 fits around the outer circumference of the other end of the rotating shaft 1313. The suction roller drive motor drives the suction roller driving wheel, which, in turn, drives the rotating shaft 1313 through the action of the suction roller driven wheel 132 and the suction roller synchronous belt.

[0035] The roller mechanism 20 includes a plurality of traction rollers 21, which are sequentially arranged between the traction mechanism 10 and the coating mechanism 30 from left to right along the travel path of the diaphragm 100. The traction rollers 21 are used to support the diaphragm 100. The outer peripheral surface of the traction rollers 21 is uniformly provided with a plurality of exhaust grooves 211, such as Figure 4 As shown, the number of the exhaust grooves 211 can be set according to actual conditions. When the diaphragm 100 passes over the traction roller 21, the air between the diaphragm 100 and the traction roller 21 can be quickly discharged through the exhaust grooves 211, thereby reducing the floating of the diaphragm 100 when it moves at high speed, ensuring the stability of the diaphragm 100 and the flatness of the diaphragm 100.

[0036] In this embodiment, there are two traction rollers 21. Two first roller frames 111 are respectively provided on the side of the two traction frames 11 near the coating mechanism 30, and two second roller frames 311 are respectively provided on the side of the two coating frames 31 of the coating mechanism 30 near the traction mechanism 10, and two second roller frames 311 are respectively provided on the side of the two coating frames 31 of the coating mechanism 30 near the traction mechanism 10. One traction roller 21 is located between the two first roller frames 111, and its two ends are rotatably mounted on the two first roller frames 111 via two traction roller bearing seats. The other traction roller 21 is located between the two second roller frames 311, and its two ends are rotatably mounted on the two second roller frames 311 via two traction roller bearing seats. It is understood that the number of traction rollers 21 can be set according to actual conditions. The two traction roller bearing seats provide rotational support for the corresponding traction roller 21.

[0037] The coating mechanism 30 includes the two coating frames 31, which are arranged in a front-to-back relationship, a gravure roller assembly 32, an approach roller assembly 34, a magazine assembly 33, an iron removal assembly 35, an anti-static assembly 36, a coating and flattening roller assembly 37, a first coating roller 381, a second coating roller 382, ​​a third coating roller 383, a fourth coating roller 384, a coating adsorption roller assembly 385, and a semi-active roller assembly 39. The magazine assembly 33, the gravure roller assembly 32, and the approach roller assembly 34 are arranged on the two coating frames 31 in order from left to right. The gravure roller assembly 32 is used to apply slurry to the diaphragm 100. The approach roller assembly 34 is used to move the diaphragm 100 toward or away from the gravure roller assembly 32, thereby pressing the diaphragm 100 against or separating the gravure roller assembly 32. The magazine assembly 33 is used to supply slurry to the gravure roller assembly 32. The first coating roller 381 is located below the cartridge assembly 33 and adjacent to the side of the coating frame 31 that is close to the traction mechanism 10. The third coating roller 383 is located below the approach roller assembly 34 and above the first coating roller 381. The third coating roller 383 is adjacent to the side of the coating frame 31 that is away from the traction mechanism 10. The iron removal assembly 35, the static removal assembly 36, and the second coating roller 382 are sequentially arranged between the first coating roller 381 and the third coating roller 383 along the travel path of the diaphragm 100. The coating flattening roller assembly 37 and the fourth coating roller 384 are sequentially arranged between the third coating roller 383 and the approach roller assembly 34 along the travel path of the diaphragm 100. The coating adsorption roller assembly 385 is arranged above the approach roller assembly 34 along the travel path of the diaphragm 100. The first coating roller 381, the second coating roller 382, ​​the third coating roller 383 and the fourth coating roller 384 are respectively used to support the diaphragm 100. The iron removal assembly 35 is used to remove iron filings and impurities on the diaphragm 100, which facilitates the coating of the diaphragm 100 and improves the coating quality of the diaphragm 100. The static electricity removal assembly 36 is used to eliminate static electricity on the diaphragm 100, which facilitates the coating of the diaphragm 100 and improves the coating quality of the diaphragm 100. The coating flattening roller assembly 37 is used to flatten and dewrinkle the diaphragm 100 so that the diaphragm 100 will not wrinkle. The coating adsorption roller assembly 385 is used to pull and adsorb the diaphragm 100. By adsorbing the diaphragm 100, the tension of the diaphragm 100 can be cut off, ensuring the stability of the diaphragm 100 when traveling at high speed.

[0038] Combine Figure 5As shown, the gravure roller assembly 32 includes a gravure roller 321, a gravure roller drive motor, and a gravure roller synchronous belt module. The gravure roller 321 is located between the two coating frames 31 and is used to apply the slurry to the diaphragm 100. The coating frames 31 are provided with gravure roller through holes. One end of the gravure roller 321 is rotatably disposed within the gravure roller through hole of one coating frame 31, such as the rear coating frame 31. The other end of the gravure roller 321 extends from the gravure roller through hole of the other coating frame 31, such as the front coating frame 31, and is connected to the gravure roller drive motor via the gravure roller synchronous belt module. The gravure roller drive motor is mounted on the other coating frame 31, such as the front coating frame 31, via a gravure roller motor mount. The gravure roller drive motor is used to drive the gravure roller 321 to rotate via the gravure roller synchronous belt module. The rotation of the gravure roller 321 thereby applies the slurry to the diaphragm 100. The gravure roller drive motor is preferably a high-power motor. The use of a high-power motor can meet the speed and torque requirements of the gravure roller 321 during high-speed coating, and the use of a gravure roller synchronous belt module drive can reduce the adverse effects of the gravure roller drive motor vibration on coating.

[0039] A gravure roller bearing seat 3211 is respectively disposed within the gravure roller through-hole of each coating frame 31. The gravure roller bearing seat 3211 partially extends from the through-hole of the corresponding coating frame 31 and is secured to the corresponding coating frame 31 via fasteners, such as screws. The gravure roller bearing seat 3211 of one coating frame 31, such as the one located at the rear, is sleeved around one end of the gravure roller 321, while the gravure roller bearing seat 3211 of the other coating frame 31, such as the one located at the front, is sleeved around the outer circumference of the gravure roller 321. The gravure roller bearing seat 3211 can provide rotational support for the gravure roller 321, allowing for smoother rotation of the gravure roller 321 and improving reliability and stability during high-speed coating.

[0040] The diameter of the gravure roller 321 is 100-200 mm.

[0041] The gravure roller synchronous belt module includes a first driving wheel, a first driven wheel 322 and a first synchronous belt sleeved on the outer periphery of the first driving wheel and the first driven wheel 322. The first driving wheel is sleeved on the outer periphery of the output end of the gravure roller driving motor, and the first driven wheel 322 is sleeved on the outer periphery of the other end of the gravure roller 321. The gravure roller driving motor is used to drive the first driving wheel to rotate. Under the action of the first driven wheel 322 and the first synchronous belt, the gravure roller 321 can be driven to rotate.

[0042] Combine Figure 6As shown, the approach roller assembly 34 includes two mounting plates 341 arranged in a front-to-back relationship, two approach rollers 342 arranged side by side in an upper and lower direction, and two approach roller drive cylinders 343. The two mounting plates 341 are located between the two coating frames 31 and are slidably mounted on the two coating frames 31. Specifically, the two coating frames 31 are each provided with two slide rails 3411, which extend in the left-right direction. The two mounting plates 341 are each provided with two sliders on the side facing away from each other, and the two sliders are respectively slidably engaged with the two slide rails 3411. The two approach rollers 342 are respectively located between the two mounting plates 341, and the ends of the two approach rollers 342 are rotatably mounted on the two mounting plates 341 via two approach roller bearing seats. The two approach rollers 342 are opposite the gravure roller 321. The two approach roller drive cylinders 343 are located between the two coating frames 31 and are respectively located on the right side of the two mounting plates 341. The two approach roller drive cylinders 343 are respectively arranged on the two coating frames 31. The output ends of the two approach roller drive cylinders 343 are respectively connected to the two mounting plates 341. The two approach roller drive cylinders 343 are respectively used to drive the two mounting plates 341 to move toward or away from the gravure roller assembly 32, thereby driving the two approach rollers 342 to move toward or away from the gravure roller assembly 32. The diaphragm 100 is driven to move toward or away from the gravure roller assembly 32 through the two approach rollers 342, thereby realizing the diaphragm 100 being pressed onto the gravure roller 321 or separated from the gravure roller 321.

[0043] Combine Figure 7As shown, the material box assembly 33 includes a material box 331, which is located between the two coating frames 31. The two ends of the material box 331 are respectively arranged on the two coating frames 31. The material box 331 corresponds to the gravure roller 321. The side of the material box 331 near the gravure roller assembly 32 is provided with an arcuate groove 3311. The inner wall of the arcuate groove 3311 matches the outer circumference of the gravure roller 321 and is provided with a discharge port corresponding to the gravure roller 321, which is connected to the interior of the material box 331. The side of the material box 331 away from the gravure roller assembly 32 is provided with multiple feed ports and multiple return ports. The multiple feed ports are each connected to a feed pipe 332, which is respectively connected to the interior of the material box 331 and the feed pipe 332. The feed pipe 332 is provided with a feed connector 3322, which is connected to the feed pipe 332. Multiple return ports are each connected to a return pipe 333, which is in communication with the interior of the cartridge 331 and the return pipe 333, respectively. The return pipe 333 is provided with a return connector 3332, which is in communication with the return pipe 333. The feed connector 3322 and the return connector 3332 are connected to the feeding mechanism 40 via a feed pipe and a return pipe, respectively. The feeding mechanism 40 is used to supply slurry to the cartridge assembly 33. In actual use, the slurry can enter the cartridge 331 through the feed pipe, the feed connector 3322, the feed pipe 332, and the multiple feed ports, and then enter the discharge port. When the gravure roller 321 rotates, it can pick up the slurry at the discharge port and apply it to the diaphragm 100. The multiple feed ports and return ports can reduce turbulence within the cartridge 331 and stabilize the pressure within the cartridge 331. The return pipe 333 and the feed pipe 332 are both large-diameter pipes, which reduces the resistance to the slurry and makes the slurry flow more smoothly.

[0044] In this embodiment, multiple feed ports are spaced apart from front to back along the length direction of the material box 331, and the feed ports are connected to the feed pipe 332 through a feed branch pipe 3321. The feed branch pipe 3321 is respectively connected to the corresponding feed port and feed pipe 332. Among the multiple feed ports, the feed branch pipe 3321 of the first feed port and the feed branch pipe 3321 of the last feed port are respectively connected to the two ends of the feed pipe 332, and the feed branch pipes 3321 of the remaining feed ports are connected to one side of the feed pipe 332. Multiple return material ports are spaced apart from each other along the length direction of the material box 331 from front to back, and the return material ports are connected to the return material pipe 333 through a return material branch pipe 3331. The return material branch pipe 3331 is connected to the corresponding return material port and return material pipe 333 respectively. Among the multiple return material ports, the return material branch pipe 3331 of the first return material port and the return material branch pipe 3331 of the last return material port are respectively connected to the two ends of the return material pipe 333, and the return material branch pipes 3331 of the remaining return material ports are respectively connected to one side of the return material pipe 333.

[0045] In this embodiment, there are five feed ports and three return ports. It can be understood that the number of feed ports and return ports can be set according to actual conditions.

[0046] The iron removal component 35 and the static removal component 36 are respectively arranged on the two coating racks 31. Specifically, the iron removal component 35 includes two magnetic bars 351, the two magnetic bars 351 are respectively located on both sides of the diaphragm 100 and are staggered, the two magnetic bars 351 are located between the two coating racks 31, the magnetic bars 351 are arranged on the magnetic bar seat, and the two ends of the magnetic bar seat are respectively arranged on the two coating racks 31. The magnetic bar 351 is used to adsorb iron filings impurities on the diaphragm 100, thereby removing iron filings impurities on the diaphragm 100. The static removal component 36 includes two static removal rods 361, the two static removal rods 361 are respectively located on both sides of the diaphragm 100 and are staggered, the two static removal rods 361 are located between the two coating racks 31, the static removal rod 361 is arranged on the static removal rod seat, and the two ends of the static removal rod seat are respectively arranged on the two coating racks 31. The static removal rod 361 is used to eliminate static electricity on the diaphragm 100.

[0047] The structure of the coating flattening roller assembly 37 is the same as that of the traction flattening roller assembly 12, and also includes a flattening roller 121, a flattening roller drive motor 122 and a flattening roller synchronous belt module. The structure of the coating flattening roller assembly 37 will not be repeated here. The only difference from the traction flattening roller assembly 12 is that the flattening roller 121 of the coating flattening roller assembly 37 is located between the two coating racks 31, and the two flattening roller fixing plates 1212 of the coating flattening roller assembly 37 are respectively arranged on the two coating racks 31.

[0048] The structure of the coating adsorption roller assembly 385 is the same as that of the traction adsorption roller assembly 13, which also includes an adsorption roller 131, an adsorption roller drive motor and an adsorption roller synchronous belt module. The structure of the coating adsorption roller assembly 385 is not described here. The only difference from the traction adsorption roller assembly 13 is that the fixed seat 13121 of the coating adsorption roller assembly 385 is set in the fixed shaft through hole of the coating frame 31 at the rear, and the fixed seat 13121 partially extends from the fixed shaft through hole and is set in the coating frame 31 at the rear. The coating and adsorption roller assembly 385 is on the coating frame 31, the other end of the rotating shaft 1313 passes through the rotating shaft through hole of the coating frame 31 located in the front and is connected to the adsorption roller drive motor through the adsorption roller synchronous belt module. The adsorption roller drive motor of the coating and adsorption roller assembly 385 is set on the coating frame 31 located in the front through the adsorption roller motor seat. The rotating shaft bearing seat 13131 of the coating and adsorption roller assembly 385 extends from the rotating shaft through hole of the coating frame 31 located in the front and is set on the coating frame 31 located in the front.

[0049] The first coating roller 381, the second coating roller 382, ​​the third coating roller 383 and the fourth coating roller 384 are located between the two coating racks 31. The two ends of the first coating roller 381, the two ends of the second coating roller 382, ​​the two ends of the third coating roller 383 and the two ends of the fourth coating roller 384 are rotatably set on the two coating racks 31 through two roller bearing seats respectively. The two roller bearing seats provide rotational support for the corresponding coating rollers.

[0050] Combine Figure 8 As shown, the semi-active roller assembly 39 includes a semi-active roller 391, a semi-active roller drive motor, and a semi-active roller synchronous belt module. Two semi-active roller frames 312 are respectively provided at the top of the two coating frames 31 on the side away from the traction mechanism 30. The two semi-active roller frames 312 are arranged in a front-to-back relationship. The semi-active roller 391 includes a roller shaft 3911 and a roller body 3912 rotatably mounted on the outer periphery of the roller shaft 3911. In this embodiment, two roller bearings 393 are respectively provided within the roller body 3912 near the two ends of the roller body 3912. The two roller bearings 393 are respectively mounted on the outer periphery of the roller shaft 3911, and the two roller bearings 393 provide rotational support for the roller body 3912. One end of the roller shaft 3911 is rotatably mounted within a mounting hole of one of the semi-active roller frames 312, such as the rear semi-active roller frame 312. The other end of the roller shaft 3911 passes through a mounting hole of the other semi-active roller frame 312 and is connected to a semi-active roller drive motor via a semi-active roller synchronous belt module. The semi-active roller drive motor is mounted on the other semi-active roller frame 312, such as the front semi-active roller frame 312, and is used to drive the roller shaft 3911 to rotate via the semi-active roller synchronous belt module, thereby driving the roller body 3912 to rotate. Two T-shaped connectors 394 are fixedly mounted on the outer periphery of the roller shaft 3911. The roller body 3912 is positioned between the two connectors 394, with each end of the roller body 3912 contacting the two connectors 394. The connectors 394 are provided with first mounting holes, while the roller body 3912 is provided with second mounting holes at each end, corresponding to the first mounting holes of the two connectors 394. Both the first and second mounting holes are threaded holes, and fasteners, such as screws, are installed in the second mounting holes and the corresponding first mounting holes. The number of first and second mounting holes, and the number of fasteners, can be adjusted based on actual needs.

[0051] Through the above structure, the roller body 3912 of the semi-active roller 391 is used to support the diaphragm 100. The roller body 3912 of the semi-active roller 391 can be actively rotated or passively rotated. When the roller body 3912 of the semi-active roller 391 is actively rotated, the semi-active roller 3912 can avoid the risk of stalling due to the small angle between the diaphragm 100 and the roller body 3912 at high speeds, thereby causing the film to be scratched. When the diaphragm 100 passes over the roller body 3912 of the semi-active roller 391, when the roller body 3912 of the semi-active roller 391 is required to be passively rotated, the fasteners are first removed from the corresponding first mounting holes and second mounting holes. In this way, the roller body 3912 and the two connecting members 394 are separated. At this time, the roller body 3912 can rotate relative to the roller shaft 3911 under the drive of the diaphragm 100, and the roller body 3912 is thus passively rotated. When the roller body 3912 of the semi-active roller 391 needs to be actively rotated, the fasteners are installed in the corresponding first mounting holes and the second mounting holes, so that the roller body 3912 and the two connecting parts 394 are fixed together, and the roller body 3912 cannot rotate relative to the roller shaft 3911. At this time, the semi-active roller drive motor drives the roller shaft 391 to rotate through the semi-active roller synchronous belt module, thereby driving the two connecting parts 394 and the roller body 3912 to rotate. The roller body is actively rotated, and the rotation of the roller body 3912 can drive the diaphragm 100 to move.

[0052] In this embodiment, a semi-active roller bearing seat 3913 is respectively disposed within the mounting holes of the two semi-active roller frames 312. Portions of the semi-active roller bearing seat 3913 extend from the corresponding mounting hole and are mounted on the corresponding semi-active roller frame 312. The semi-active roller bearing seat 3913 of one semi-active roller frame 312, such as the one located at the rear, is sleeved around the outer periphery of one end of the roller shaft 3911. The semi-active roller shaft bearing seat 3913 of the other semi-active roller frame 312, such as the one located at the front, is sleeved around the outer periphery of the roller shaft 3911. The semi-active roller bearing seat 3913 provides rotational support for the roller shaft 3911, thereby improving the smoothness of its rotation.

[0053] The semi-active roller synchronous belt module includes a second driving pulley, a second driven pulley 392, and a second synchronous belt that fits between the second driving pulley and the second driven pulley 392. The second driving pulley is mounted on the outer periphery of the output end of the semi-active roller drive motor, and the second driven pulley 392 is mounted on the outer periphery of the other end of the roller shaft 3911. The semi-active roller drive motor is used to drive the second driving pulley to rotate. Under the action of the second driven pulley 392 and the second synchronous belt, the roller shaft 3911 is driven to rotate.

[0054] like Figure 9As shown, the feeding mechanism 40 includes a feeding base 41, a material barrel 42, a material cover 43, a stirring motor 44, a stirring element, a multi-chamber pump 45 (i.e., a pump with multiple chambers), and a filter 46. Universal wheels 411 are provided at the bottom end of the feeding base 41. Specifically, a universal wheel 411 is provided at each of the four corners of the bottom end of the feeding base 41. The number of universal wheels 411 can be set according to actual conditions. The provision of universal wheels 411 facilitates the movement of the feeding base 41. A push rod 412 is provided at the top end of the feeding base 41. By pushing the push rod 412, the feeding base 41 can be pushed to move. The material barrel 42 is close to the push rod 412. The material barrel 42, the multi-chamber pump 45, and the filter 46 are sequentially arranged at the top end of the feeding base 41 in a direction away from the push rod 412. A material cover 43 is placed on the top of the material barrel 42. The material barrel 42 is used to hold the slurry. By opening the material cover 43, the slurry can be placed into the material barrel 42, and by closing the material cover 43, the slurry can be sealed and contained. A stirring motor 44 is disposed on the top of the material cover 43, and a stirring member is located within the material barrel 42. The output end of the stirring motor 44 passes through a through hole in the material cover 43 and is connected to the stirring member. The stirring motor 44 is used to drive the stirring member to rotate, thereby stirring the slurry and ensuring the uniformity of the slurry. The material barrel 42 is connected to the multi-chamber pump 45 via a first pipe, and the multi-chamber pump 45 is connected to the filter 46 via a second pipe. The feed connector and return connector are connected to the filter 46 via the feed pipe and return pipe, respectively. The filter 46 is used to filter larger impurities in the slurry, such as iron filings, to prevent scratches on the outer surface of the gravure roller 321 and clogging of the pipe.

[0055] The stirring element includes a stirring shaft and a stirring impeller. One end of the stirring shaft is connected to the output end of the stirring motor 44, and the other end of the stirring shaft is provided with a stirring impeller. The stirring motor 44 is used to drive the stirring shaft to rotate, thereby driving the stirring impeller to rotate. The slurry is stirred by the rotation of the stirring impeller.

[0056] Through the above structure, in actual application, after the diaphragm 100 is unwound by the unwinding device and preheated in the preheating oven, it first passes over the flattening roller 121 of the traction flattening roller assembly 12 and the roller 1311 of the traction adsorption roller assembly 13, then passes over the two traction rollers 21, then passes over the first coating roller 381, then passes between the two magnetic bars 351 and between the two static elimination bars 361, and then passes over the second coating roller 382, ​​the third coating roller 383, the flattening roller 121 of the coating flattening roller assembly 37, the fourth coating roller 384, and the two approach rollers 342. The two approach roller driving cylinders 343 drive the two approach rollers 342 to move toward the direction close to the gravure roller assembly 32, so that the two approach rollers 342 can drive the diaphragm 100 to move toward the direction close to the gravure roller assembly 321. The diaphragm 100 is pressed onto the gravure roller 321. At the same time, under the pumping action of the multi-chamber pump 45, the slurry in the barrel 42 can enter the material box 331 through the first pipe, the multi-chamber pump 45, the second pipe, the filter 46, the feed pipe, the feed connector 3322, the feed pipe 332, and multiple feed ports, and then enter the discharge port of the material box 331. The gravure roller 321 rotates under the drive of the gravure roller drive motor, and brings up the slurry at the discharge port and coats the slurry on the diaphragm 100. In this way, the diaphragm 100 is coated. The coated diaphragm 100 is sequentially passed over the roller 1311 of the adsorption roller 131 of the coating adsorption roller assembly 385 and the roller body 3912 of the semi-active roller 391, and then is dried in an oven and wound on the winding device. In this way, the coating of the diaphragm 100 is completed.

[0057] The utility model is provided with a traction mechanism 10, which includes a traction flattening roller assembly 12 and a traction adsorption roller assembly 13. After the diaphragm 100 comes out of the preheating oven and before it passes around the approach roller assembly 34, the diaphragm 100 can be flattened and wrinkled by the traction flattening roller assembly 12, and the diaphragm 100 can be pulled and adsorbed by the traction adsorption roller assembly 13. By adsorbing the diaphragm 100, the tension of the diaphragm 100 can be cut off, thereby ensuring the stability of the diaphragm 100 when walking at high speed. In this way, when the diaphragm 100 is driven by the approach roller assembly 34 to move toward the gravure roller assembly 32, the diaphragm 100 will not wrinkle or walk unstably, thereby improving the coating quality of the diaphragm 100. By setting up the coating flattening roller assembly 37 and the coating adsorption roller assembly 385, the coating flattening roller assembly 37 can further flatten and remove wrinkles on the diaphragm 100, and the coating adsorption roller assembly 385 can further pull and adsorb the diaphragm 100. By adsorbing the diaphragm 100, the tension of the diaphragm 100 can be further cut off, so that the diaphragm 100 will not wrinkle or move unstably, thereby further improving the coating quality of the diaphragm 100.

[0058] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A diaphragm coating device, comprising a coating mechanism, wherein the coating mechanism comprises two coating frames, a gravure roller assembly, an approach roller assembly and a material box assembly arranged in a front-to-back relationship, wherein the material box assembly, the gravure roller assembly and the approach roller assembly are arranged on the two coating frames from left to right in sequence, the gravure roller assembly is used to apply slurry to the diaphragm, the approach roller assembly is used to drive the diaphragm to move toward or away from the gravure roller assembly to press the diaphragm onto the gravure roller assembly or separate from the gravure roller assembly, and the material box assembly is used to provide slurry to the gravure roller assembly, characterized in that It also includes a traction mechanism arranged on the left side of the coating mechanism along the walking path of the diaphragm, and the traction mechanism includes two traction frames arranged in a front-to-back relationship, a traction flattening roller assembly and a traction adsorption roller assembly. The traction flattening roller assembly and the traction adsorption roller assembly are arranged on the two traction frames in sequence from left to right along the walking path of the diaphragm.

2. The diaphragm coating device according to claim 1, characterized in that The traction flattening roller assembly includes a flattening roller, a flattening roller drive motor and a flattening roller synchronous belt module. The two ends of the flattening roller are rotatably arranged on two flattening roller bearing seats, and the two flattening roller bearing seats are respectively arranged on the two traction frames through two flattening roller fixing plates. The flattening roller drive motor is arranged on one of the flattening roller fixing plates and is connected to one end of the flattening roller through the flattening roller synchronous belt module. The flattening roller drive motor is used to drive the flattening roller to rotate through the flattening roller synchronous belt module.

3. The diaphragm coating device according to claim 1, characterized in that: The traction adsorption roller assembly includes an adsorption roller, an adsorption roller driving motor and an adsorption roller synchronous belt module. The adsorption roller includes a hollow roller, a fixed shaft and a rotating shaft, and the outer circumference of the roller is evenly provided with a plurality of adsorption holes, and the plurality of adsorption holes are communicated with the interior of the roller. One end of the fixed shaft is arranged in one end of the roller, and a fixed shaft bearing is provided in one end of the roller, and the fixed shaft bearing is sleeved on the outer circumference of one end of the fixed shaft, and the other end of the fixed shaft is arranged on one of the traction frames, and a joint is provided on the outer circumference of the fixed shaft, and a channel is provided in the interior of the fixed shaft, and the channel is respectively communicated with the joint and the interior of the roller. One end of the rotating shaft is arranged in the other end of the roller, and the other end of the rotating shaft passes through the rotating shaft through hole of the other traction frame and is connected to the adsorption roller driving motor through the adsorption roller synchronous belt module. The adsorption roller driving motor is arranged on the other traction frame and is used to drive the rotating shaft to rotate through the adsorption roller synchronous belt module, so as to drive the roller to rotate relative to the fixed shaft.

4. The diaphragm coating device according to claim 1, characterized in that The coating mechanism also includes a first coating roller, an iron removal assembly, an anti-static assembly, a second coating roller, a third coating roller, a coating flattening roller assembly, a fourth coating roller and a coating adsorption roller assembly arranged on the two coating racks. The first coating roller is located below the material box assembly and close to the side of the coating rack close to the traction mechanism, the third coating roller is located below the approach roller assembly and above the first coating roller, and the third coating roller is close to the side of the coating rack away from the traction mechanism. The iron removal assembly, the anti-static assembly, and the second coating roller are sequentially arranged between the first coating roller and the third coating roller along the travel path of the diaphragm. The coating flattening roller assembly and the fourth coating roller are sequentially arranged between the third coating roller and the approach roller assembly along the travel path of the diaphragm. The coating adsorption roller assembly is arranged above the approach roller assembly along the travel path of the diaphragm.

5. The membrane coating device according to claim 1, characterized in that The coating mechanism also includes a semi-active roller assembly, which includes a semi-active roller, a semi-active roller drive motor and a semi-active roller synchronous belt module. Two semi-active roller frames are respectively provided on the side and top of the two coating frames away from the traction mechanism. The two semi-active roller frames are arranged front to back relative to each other. The semi-active roller includes a roller shaft and a roller body rotatably sleeved on the outer circumference of the roller shaft. One end of the roller shaft is rotatably set in the mounting hole of one of the semi-active roller frames, and the other end of the roller shaft passes through the mounting hole of the other semi-active roller frame and passes through the semi-active roller frame. The active roller synchronous belt module is connected to the semi-active roller drive motor, and the semi-active roller drive motor is arranged on another semi-active roller frame and is used to drive the roller shaft to rotate through the semi-active roller synchronous belt module. The outer peripheral fixed sleeve of the roller shaft is provided with two connecting parts, and the roller body is located between the two connecting parts. The two ends of the roller body are respectively in contact with the two connecting parts, and the connecting part is provided with a first mounting hole. The two ends of the roller body are respectively provided with second mounting holes corresponding to the first mounting holes of the two connecting parts, and fasteners are installed in the second mounting hole and the corresponding first mounting hole.

6. The diaphragm coating device according to claim 1, characterized in that The gravure roller assembly includes a gravure roller, a gravure roller drive motor and a gravure roller synchronous belt module. One end of the gravure roller is rotatably arranged in a through hole of one of the coating racks, and the other end of the gravure roller passes through the through hole of the other coating rack and is connected to the gravure roller drive motor through the gravure roller synchronous belt module. The gravure roller drive motor is arranged on the other coating rack and is used to drive the gravure roller to rotate through the gravure roller synchronous belt module.

7. The diaphragm coating device according to claim 6, characterized in that: The approach roller assembly includes two mounting plates arranged front to back relative to each other, two approach rollers arranged side by side up and down, and two approach roller driving cylinders. The two mounting plates are located between the two coating frames and are slidably arranged on the two coating frames respectively. The two ends of the two approach rollers are rotatably arranged on the two mounting plates respectively. The two approach rollers are opposite to the gravure rollers. The two approach roller driving cylinders are respectively arranged on the two coating frames. The output ends of the two approach roller driving cylinders are respectively connected to the two mounting plates. The two approach roller driving cylinders are respectively used to drive the two mounting plates to move toward or away from the gravure roller assembly, thereby driving the two approach rollers to move toward or away from the gravure roller assembly.

8. The membrane coating device according to claim 6, characterized in that: The diaphragm coating device also includes a feeding mechanism for supplying slurry to the material box assembly, the material box assembly includes a material box, both ends of the material box are respectively arranged on the two coating frames, an arc-shaped groove is provided on the side of the material box close to the gravure roller assembly, the inner wall of the arc-shaped groove cooperates with the outer circumferential surface of the gravure roller and is provided with a discharge port corresponding to the gravure roller, the discharge port is connected with the interior of the material box, and a side of the material box away from the gravure roller assembly is provided with multiple feed ports and multiple return ports, and the multiple feed ports are all connected to a feed pipe, the feed ports are respectively connected with the interior of the material box and the feed pipe, a feed joint is provided on the feed pipe, the feed joint is connected with the feed pipe, and the multiple return ports are all connected with a return pipe, the return ports are respectively connected with the interior of the material box and the return pipe, a return joint is provided on the return pipe, the return joint is connected with the return pipe, and the feed joint and the return joint are connected to the feeding mechanism through the feed pipe and the return pipe, respectively.

9. The membrane coating device according to claim 8, characterized in that: The feeding mechanism includes a feeding base, a material barrel, a material cover, a stirring motor, a stirring piece, a multi-chamber pump and a filter. The bottom end of the feeding base is provided with a universal wheel, and the top of the feeding base is provided with a push rod. The material barrel, the multi-chamber pump and the filter are arranged in sequence on the top of the feeding base in a direction away from the push rod. The material cover is covered on the top of the material barrel, the stirring motor is arranged on the top of the material cover, the stirring piece is located in the material barrel, the output end of the stirring motor passes through the through hole of the material cover and is connected to the stirring piece, the material barrel and the multi-chamber pump are connected by a first pipe, the multi-chamber pump and the filter are connected by a second pipe, and the feed joint and the return joint are connected to the filter through the feed pipe and the return pipe respectively.

10. The membrane coating device according to claim 1, characterized in that: The diaphragm coating device also includes a roller mechanism arranged between the traction mechanism and the coating mechanism along the travel path of the diaphragm, and the roller mechanism includes a plurality of traction rollers, which are arranged in sequence from left to right along the travel path of the diaphragm, and the outer peripheral surface of the traction roller is evenly provided with multiple exhaust grooves.

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