A dot-coating diaphragm coating device

Abstract

This utility model discloses a dot-coating diaphragm coating device, comprising two opposing side plates, a gravure roller mechanism, a proximity roller mechanism, and a material box. The gravure roller mechanism includes a gravure roller and a gravure roller motor for driving the gravure roller to rotate. Both ends of the gravure roller are rotatably disposed on the inner sides of the two side plates. The gravure roller is located between the material box and the proximity roller mechanism. Both ends of the material box are disposed on the inner sides of the two side plates, and the side of the material box closest to the gravure roller has a material groove communicating with the interior of the material box. The gravure roller is partially located within the material groove. The proximity roller mechanism includes two opposing mounting plates and a flat-push drive assembly. The two mounting plates are slidably disposed on the inner sides of the two side plates. The proximity roller mechanism also includes a first proximity roller, two vertical adjustment assemblies, and two horizontal adjustment assemblies. This utility model improves coating quality and can adapt to different diaphragms, thus having a wide range of applications.

Description

Technical Field

[0001] This utility model relates to the field of battery separator production technology, specifically to a dot-coating separator coating device. Background Technology

[0002] In the production process of lithium battery separators, a separator coating device is usually used to coat the separator.

[0003] Existing diaphragm coating apparatuses generally include two opposing side plates, a gravure roller mechanism, a proximity roller mechanism, and a container for holding the coating slurry, such as... Figure 1 As shown, the gravure roller mechanism includes a gravure roller and a gravure roller motor for driving the gravure roller to rotate. The two ends of the gravure roller are rotatably disposed on the inner sides of two side plates. The gravure roller is located between the material box and the approach roller mechanism. The two ends of the material box are disposed on the inner sides of two side plates, and the side of the material box near the gravure roller is provided with a material groove communicating with the interior of the material box. The gravure roller is partially located in the material groove. The approach roller mechanism includes two mounting plates arranged opposite to each other, two approach rollers 1 distributed vertically, and a horizontal push drive assembly for driving the two mounting plates to move horizontally in the direction of approaching or moving away from the gravure roller. The two mounting plates are slidably disposed on the inner sides of the two side plates. The two approach rollers 1 are opposite to the gravure roller, and the two ends of the two approach rollers 1 are rotatably disposed on the inner sides of the two mounting plates. After the diaphragm passes over the two approach rollers 1, the two mounting plates are driven to move horizontally toward the gravure roller by the flat push drive assembly, thereby driving the two approach rollers 1 to move horizontally toward the gravure roller so that the diaphragm comes into contact with the gravure roller. Then, the gravure roller motor drives the gravure roller to rotate, so that the coating slurry in the material box can be coated onto the diaphragm through the gravure roller, thus realizing the coating of the diaphragm.

[0004] In the above structure, since the height and horizontal positions of the two proximity rollers are not adjustable, it is impossible to adjust the contact position between the diaphragm and the gravure roller, or the contact pressure between the diaphragm and the gravure roller. This reduces the coating quality and cannot adapt to different diaphragms, resulting in a narrow range of applications. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a dot coating diaphragm coating device, which improves the coating quality and can adapt to different diaphragms, with a wide range of applications.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A dot-coating diaphragm coating apparatus includes two opposing side plates, a gravure roller mechanism, a proximity roller mechanism, and a material box. The gravure roller mechanism includes a gravure roller and a gravure roller motor for driving the gravure roller to rotate. Both ends of the gravure roller are rotatably disposed inside the two side plates. The gravure roller is located between the material box and the proximity roller mechanism. Both ends of the material box are disposed inside the two side plates, and the side of the material box closest to the gravure roller has a material groove communicating with the interior of the material box. The gravure roller is partially located within the material groove. The proximity roller mechanism includes two opposing mounting plates and a mechanism for driving the two mounting plates towards the proximity roller mechanism. The approach roller mechanism includes a first approach roller, two up-and-down adjustment components, and two horizontal adjustment components. The first approach roller corresponds to the gravure roller, and its two ends are rotatably mounted on the two up-and-down adjustment components. The two up-and-down adjustment components are slidably mounted on the two mounting plates and are used to drive the first approach roller to move up and down. The two horizontal adjustment components are connected to the two mounting plates and are used to drive the two up-and-down adjustment components to move horizontally toward or away from the gravure roller.

[0008] As a preferred technical solution, the approach roller mechanism further includes a second approach roller, the two ends of which are rotatably mounted on two up-down adjustment components. The second approach roller is located above the first approach roller and on the side of the center of the first approach roller that is close to the gravure roller.

[0009] As a preferred technical solution, the up-and-down adjustment assembly includes a mounting base, a lower mounting block, an upper fixing block, a lower fixing block, an up-and-down adjustment block, and an up-and-down adjustment screw. The mounting bases of the two up-and-down adjustment assemblies are slidably disposed on the inner sides of two mounting plates. The lower mounting block is disposed at the bottom end of the mounting base and close to one end of the mounting base. The upper fixing block and the lower fixing block are distributed vertically at intervals. The upper fixing block is disposed on the inner side of the mounting base, and the lower fixing block is disposed on the inner side of the lower mounting block. The up-and-down adjustment block is located between the upper fixing block and the lower fixing block. One end of the up-and-down adjustment screw is rotatably disposed at the top end of the lower fixing block. The other end of the up-down adjusting screw passes through the screw hole of the up-down adjusting block and the through hole of the upper fixed block and is located above the upper fixed block. The other end of the up-down adjusting screw is provided with an up-down adjusting handle. The up-down adjusting screw is threadedly connected to the screw hole of the up-down adjusting block and rotatably connected to the through hole of the upper fixed block. The two ends of the first approach roller are respectively rotatably disposed inside the up-down adjusting blocks of the two up-down adjusting assemblies. The top end of the lower fixed block is provided with a guide rod. The end of the guide rod away from the lower fixed block passes through the guide hole of the up-down adjusting block and is disposed at the bottom end of the upper fixed block. The up-down adjusting block can move up and down relative to the guide rod.

[0010] As a preferred technical solution, the up-down adjustment assembly further includes an upper mounting block, a first support block, and a second support block. The upper mounting block is disposed at the top of the mounting base and corresponds to the upper fixing block. The first support block is disposed on the outside of the upper mounting block, and the second support block is disposed at the top of the first support block. The two ends of the second proximity roller are respectively rotatably disposed on the inner sides of the second support blocks of the two up-down adjustment assemblies.

[0011] As a preferred technical solution, the horizontal adjustment assembly includes a translation adjustment screw. The translation adjustment screws of the two horizontal adjustment assemblies correspond to the mounting seats of the two vertical adjustment assemblies and the two mounting plates, respectively. One end of the mounting plate is provided with an adjustment seat. The translation adjustment screw is rotatably connected to the adjustment seat of the corresponding mounting plate and is located on the side of the corresponding mounting seat away from the gravure roller. The other end of the mounting seat is provided with a mounting seat through hole. The mounting seat is provided with a through groove that passes through its inner and outer sides. The mounting seat through hole communicates with the through groove. The other end of the mounting seat is provided with a translation adjustment block at the position corresponding to the mounting seat through hole. The screw hole of the translation adjustment block communicates with the mounting seat through hole. One end of the translation adjustment screw is provided with a translation adjustment handle. The other end of the translation adjustment screw passes through the screw hole of the translation adjustment block of the corresponding mounting seat, the mounting seat through hole of the corresponding mounting seat, and extends into the through groove of the corresponding mounting seat. The translation adjustment screw is threadedly connected to the screw hole of the translation adjustment block.

[0012] As a preferred technical solution, the flat push drive assembly includes two flat push cylinders, which correspond to two mounting plates respectively. The flat push cylinders are located on the side of the corresponding mounting plate away from the gravure roller, and the output end of the flat push cylinder is rotatably connected to the corresponding mounting plate. The mounting end of the flat push cylinder is provided with a mounting shaft, and the ends of the mounting shafts of the two flat push cylinders are rotatably connected to two side plates respectively.

[0013] As a preferred technical solution, the outer peripheral surface of the gravure roller is evenly distributed with several dot-shaped grooves.

[0014] As a preferred technical solution, the dot-coating diaphragm coating device further includes a first guide roller, an active guide roller, a guide roller motor for driving the active guide roller to rotate, a second guide roller, a third guide roller, and a fourth guide roller. The two ends of the first guide roller are rotatably disposed at one end of two side plates. The active guide roller and the second guide roller are sequentially disposed between the first guide roller and the approach roller mechanism along the travel path of the diaphragm. The active guide roller is located below the approach roller mechanism, and the two ends of the active guide roller are rotatably disposed on the inner side of the two side plates. The second guide roller is located below the two up-down adjustment components and on the side away from the gravure roller at the center of the first approach roller. The two ends of the second guide roller are rotatably disposed on the inner side of the two mounting plates. The fourth guide roller is located above the approach roller mechanism and close to the other end of the two side plates. The two ends of the fourth guide roller are rotatably disposed on the inner side of the two side plates. The third guide roller is disposed between the approach roller mechanism and the fourth guide roller along the travel path of the diaphragm, and the third guide roller is located above the approach roller mechanism. The two ends of the third guide roller are rotatably disposed on the inner side of the two side plates.

[0015] As a preferred technical solution, the dot-coating diaphragm coating device further includes a first flattening roller and a second flattening roller. The first flattening roller is disposed between the first guide roller and the active guide roller along the travel path of the diaphragm, and the second flattening roller is disposed between the active guide roller and the second guide roller along the travel path of the diaphragm. The two ends of the first flattening roller and the two ends of the second flattening roller are respectively rotatably disposed on the inner sides of the two side plates.

[0016] As a preferred technical solution, the dot-coating diaphragm coating device further includes a first adsorption roller and a second adsorption roller. The first adsorption roller is disposed between the active pass roller and the second flattening roller along the travel path of the diaphragm, and the second adsorption roller is disposed between the approach roller mechanism and the third pass roller along the travel path of the diaphragm. The two ends of the first adsorption roller and the two ends of the second adsorption roller are respectively rotatably disposed on the inner sides of the two side plates.

[0017] The beneficial effects of this utility model are as follows: The proximity roller mechanism of this utility model, through the arrangement of a first proximity roller, two up-and-down adjustment components, and two horizontal adjustment components, allows the first proximity roller to move up and down via the two up-and-down adjustment components, and the first proximity roller to move horizontally towards or away from the gravure roller via the two horizontal adjustment components. This enables the adjustment of the contact position between the diaphragm and the gravure roller, as well as the adjustment of the contact pressure between the diaphragm and the gravure roller, thereby improving the coating quality and adapting to different diaphragms, thus having a wide range of applications. Attached Figure Description

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

[0019] Figure 1 This is a cross-sectional schematic diagram of a gravure roller and two proximity rollers in the prior art;

[0020] Figure 2 This is a cross-sectional schematic diagram of a dot-coating diaphragm coating device according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 The diagram shows the structure of the two side plates, material box, gravure roller mechanism, proximity roller mechanism, and first angle of the second passing roller in the dot-coating diaphragm coating device.

[0022] Figure 4 yes Figure 2 The diagram shows the structure of the two side plates, material box, gravure roller mechanism, proximity roller mechanism, and second angle of the second passing roller in the dot-coating diaphragm coating device.

[0023] Figure 5 yes Figure 2 The diagram shows the structure of the approach roller mechanism of the dot-coating diaphragm coating device after removing the two mounting plates and the flat drive assembly.

[0024] Figure label:

[0025] 1. Approach roller;

[0026] 10. Side plate; 11. Side plate connecting shaft;

[0027] 20. Gravure roller mechanism; 21. Gravure roller; 211. Groove;

[0028] 30. Approach roller mechanism; 31. Mounting plate; 311. First slide rail; 312. First slider; 313. Mounting plate connecting shaft; 32. First approach roller; 33. Second approach roller; 341. Mounting base; 3411. Through groove; 3412. Second slide rail; 3413. Second slider; 342. Lower mounting block; 343. Upper fixing block; 344. Lower fixing block; 345. Upper and lower adjusting blocks; 3451. Connecting plate; 3452. 346. Guide rod; 346. Up and down adjusting screw; 3461. Up and down adjusting handle; 351. Translation adjusting screw; 3511. Adjusting seat; 3512. Adjusting seat bearing; 352. Translation adjusting block; 353. Translation adjusting handle; 361. Horizontal push cylinder; 3611. First fisheye connector; 3612. Mounting shaft; 3613. Second fisheye connector; 347. Upper mounting block; 348. First support block; 349. Second support block;

[0029] 40. Material box; 41. Material trough;

[0030] 51. First pass roller; 52. Active pass roller; 53. Second pass roller; 54. Third pass roller; 55. Fourth pass roller; 61. First flattening roller; 62. Second flattening roller; 71. First adsorption roller; 72. Second adsorption roller. Detailed Implementation

[0031] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0032] Please refer to Figures 2 to 5 An embodiment of this utility model provides a dot-coating diaphragm coating device, which includes two side plates 10 arranged opposite to each other, a gravure roller mechanism 20, a proximity roller mechanism 30, and a material box 40 for holding coating slurry.

[0033] The gravure roller mechanism 20 includes a gravure roller 21 and a gravure roller motor. The two ends of the gravure roller 21 are rotatably mounted on the inner sides of two side plates 10 via two gravure roller bearing seats. The gravure roller motor is mounted on the outer side of one of the side plates 10. One end of the gravure roller 21 passes through a hole in one of the side plates 10 and is connected to the output end of the gravure roller motor. The gravure roller motor is used to drive the gravure roller 21 to rotate.

[0034] The gravure roller 21 is located between the material box 40 and the approach roller mechanism 30. The two ends of the material box 40 are respectively located inside the two side plates 10, and the side of the material box 40 near the gravure roller 21 is provided with a material groove 41 that communicates with the interior of the material box 40. The gravure roller 21 is partially located in the material groove 41.

[0035] In this embodiment, the outer peripheral surface of the gravure roller 21 is evenly distributed with a plurality of dot-shaped grooves 211, such as Figure 3As shown, the cross-sectional shape of the dotted grooves 211 can be, for example, circular or triangular. Understandably, the number and cross-sectional shape of the dotted grooves 211 can be set according to actual conditions. In practical applications, during the rotation of the gravure roller 21, when the dotted grooves 211 are located within the material trough 41, the coating slurry in the material box 40 can enter the dotted grooves 211 of the gravure roller 21. Then, as the gravure roller 21 continues to rotate, the coating slurry in the dotted grooves 211 can be transferred to the separator through the gravure roller 21, thereby achieving the coating of the separator. Compared with existing gravure rollers with spiral grooves on their outer circumference, the area of ​​the dotted grooves 211 in this invention is smaller than that of the spiral grooves, thus requiring less coating slurry, reducing the amount of coating slurry used, lowering coating costs, and the coating slurry thickness at the edges and center of the dotted grooves 211 is relatively thin, thereby reducing the coating thickness of the separator and meeting the demand for thinner and lighter lithium batteries.

[0036] The approach roller mechanism 30 includes two mounting plates 31 arranged opposite to each other, a first approach roller 32, a second approach roller 33, two up-and-down adjustment components, two horizontal adjustment components, and a flat drive component. In this embodiment, the first approach roller 32 is the same size as the gravure roller 21. The diameter of the second approach roller 33 is smaller than that of the first approach roller 32, which facilitates the installation of the second approach roller 33 and reduces costs.

[0037] Two mounting plates 31 are slidably disposed on the inner sides of the two side plates 10. Specifically, the inner side of the side plate 10 is provided with a first slide rail 311, the length direction of the first slide rail 311 being the same as the length direction of the side plate 10. The outer side of the mounting plate 31 is provided with a first slider 312, and the first sliders 312 of the two mounting plates 31 are slidably engaged with the first slide rails 311 of the two side plates 10 respectively. The first approach roller 32 corresponds to the gravure roller 21, and both ends of the first approach roller 32 are rotatably disposed on the two up-and-down adjustment components. Both ends of the second approach roller 33 are rotatably disposed on the two up-and-down adjustment components. The second approach roller 33 is located above the first approach roller 32 and is located on the side of the center of the first approach roller 32 closer to the gravure roller 21. The two up-and-down adjustment components are slidably disposed on the inner sides of the two mounting plates 31 and are used to drive the first approach roller 32 to move up and down, thereby realizing the adjustment of the height position of the first approach roller 32, thereby realizing the adjustment of the contact position between the diaphragm and the gravure roller 21. Two horizontal adjustment components are connected to two mounting plates 31 respectively and are used to drive two vertical adjustment components to move horizontally toward or away from the gravure roller 21. This drives the first approach roller 32 and the second approach roller 33 to move horizontally toward or away from the gravure roller 21, thereby adjusting the horizontal position of the first approach roller 32 and the second approach roller 33, thus adjusting the contact pressure between the diaphragm and the gravure roller 21. A horizontal push drive component is used to drive the two mounting plates 31 to move horizontally toward or away from the gravure roller 21. This drives the two vertical adjustment components and the two horizontal adjustment components to move horizontally toward or away from the gravure roller 21, which in turn drives the first approach roller 32 and the second approach roller 33 to move horizontally toward or away from the gravure roller 21. The diaphragm can be brought into contact with or separated from the gravure roller 21 by moving the first approach roller 32 horizontally toward or away from the gravure roller 21. The second approach roller 33 can be brought into contact with or separated from the diaphragm by moving the second approach roller 33 horizontally toward or away from the gravure roller 21. The coating wrap angle can be adjusted by the second approach roller 33 coming into contact with the diaphragm.

[0038] Specifically, the up-down adjustment assembly includes a mounting base 341, a lower mounting block 342, an upper fixing block 343, a lower fixing block 344, an up-down adjustment block 345, an up-down adjustment screw 346, an upper mounting block 347, a first support block 348, and a second support block 349.

[0039] The mounting bases 341 of the two up-and-down adjustment components are slidably disposed on the inner sides of the two mounting plates 31. In this embodiment, the inner side of the mounting plate 31 is provided with a second slide rail 3412, the length direction of the second slide rail 3412 being the same as the length direction of the mounting plate 31. The outer side of the mounting base 341 is provided with a second slider 3413, and the second sliders 3413 of the two up-and-down adjustment components are slidably engaged with the second slide rails 3412 of the two mounting plates 31. The lower mounting block 342 is disposed at the bottom end of the mounting base 341 and close to one end of the mounting base 341. The upper fixing block 343 and the lower fixing block 344 are distributed vertically at intervals, the upper fixing block 343 being disposed on the inner side of the mounting base 341, and the lower fixing block 344 being disposed on the inner side of the lower mounting block 342. The up-down adjusting block 345 is located between the upper fixed block 343 and the lower fixed block 344. One end of the up-down adjusting screw 346 is rotatably disposed at the top of the lower fixed block 344. In this embodiment, the top of the lower fixed block 344 is provided with a mounting hole. One end of the up-down adjusting screw 346 is rotatably disposed in the mounting hole of the lower fixed block 344. The other end of the up-down adjusting screw 346 passes through the screw hole of the up-down adjusting block 345 and the through hole of the upper fixed block 343 and is located above the upper fixed block 343. The other end of the up-down adjusting screw 346 is provided with an up-down adjusting handle 3461. The up-down adjusting screw 346 is threadedly connected to the screw hole of the up-down adjusting block 345 and rotatably connected to the through hole of the upper fixed block 343. The two ends of the first approach roller 32 are rotatably mounted on the inner sides of the upper and lower adjusting blocks 345 of the two upper and lower adjusting components via two first approach roller bearing seats. In this embodiment, a connecting plate 3451 is provided on the inner side of the upper and lower adjusting block 345. The two ends of the first approach roller 32 are rotatably mounted on the inner sides of the connecting plate 3451 of the two upper and lower adjusting components via two first approach roller bearing seats. By rotating the upper and lower adjusting handle 3461, the upper and lower adjusting screw 346 can be rotated, which in turn can drive the upper and lower adjusting block 345 to move up and down. The movement of the upper and lower adjusting blocks 345 of the two upper and lower adjusting components can drive the first approach roller 32 to move up and down.

[0040] A guide rod 3452 is provided at the top of the lower fixed block 344. The end of the guide rod 3452 away from the lower fixed block 344 passes through the guide hole of the upper and lower adjusting block 345 and is set at the bottom of the upper fixed block 343. The upper and lower adjusting block 345 can move up and down relative to the guide rod 3452. The guide rod 3452 guides the up and down movement of the upper and lower adjusting block 345. In this embodiment, there are two guide rods 3452, and the upper and lower adjusting screw 346 is located between the two guide rods 3452.

[0041] An upper mounting block 347 is disposed at the top of the mounting base 341 and corresponds to the upper fixing block 343. A first support block 348 is disposed on the outer side of the upper mounting block 347, and a second support block 349 is disposed at the top of the first support block 348. In this embodiment, the top of the first support block 348 is provided with a mounting groove, and the second support block 349 is disposed at the bottom of the mounting groove. The two ends of the second approach roller 33 are rotatably disposed on the inner side of the second support block 349 of the two up-and-down adjustment components. In this embodiment, the inner side of the second support block 349 is provided with mounting holes, and the two ends of the second approach roller 33 are rotatably disposed in the corresponding mounting holes of the second support block 349.

[0042] The horizontal adjustment assembly includes a translation adjustment screw 351. The translation adjustment screws 351 of the two horizontal adjustment assemblies correspond to the mounting seats 341 of the two vertical adjustment assemblies and the two mounting plates 31, respectively. One end of the mounting plate 31 is provided with an adjustment seat 3511. The translation adjustment screw 351 is rotatably connected to the adjustment seat 3511 of the corresponding mounting plate 31 and is located on the side of the corresponding mounting seat 341 away from the gravure roller 21. The other end of the mounting seat 341 is provided with a mounting seat through hole. The mounting seat 341 has a through groove 3411 that passes through its inner and outer sides. The through groove 3411 is close to the other end of the mounting seat 341 and communicates with the mounting seat through hole. The other end of the mounting seat 341 is provided with a translation adjustment block 352 at the position corresponding to the mounting seat through hole. The translation adjustment block 352 has a screw hole that communicates with the mounting seat through hole. One end of the translation adjustment screw 351 is provided with a translation adjustment handle 353, and the other end of the translation adjustment screw 351 passes through the screw hole of the translation adjustment block 352 of the corresponding mounting base 341, the mounting base through hole of the corresponding mounting base 341, and extends into the through groove 3411 of the corresponding mounting base 341. The translation adjustment screw 351 is threadedly connected to the screw hole of the translation adjustment block 352. By rotating the translation adjustment handle 353, the translation adjustment screw 351 can be rotated relative to the corresponding mounting base 341, which in turn can drive the corresponding translation adjustment block 352 to move horizontally toward or away from the gravure roller 21, thereby driving the corresponding mounting base 341 to move horizontally toward or away from the gravure roller 21. The horizontal movement of the mounting base 341 toward or away from the gravure roller 21 can drive the lower mounting block 342, upper fixing block 343, lower fixing block 344, upper and lower adjustment block 345, upper and lower adjustment screw 346, upper and lower adjustment handle 3461, guide rod 3452, upper mounting block 347, first support block 348, second support block 349, first approach roller 32 and second approach roller 33 to move horizontally toward or away from the gravure roller 21.

[0043] The translation adjustment screw 351 is rotatably connected to the corresponding adjustment seat 3511 of the mounting plate 31. Specifically, the adjustment seat 3511 has adjustment seat through holes extending through both ends. The translation adjustment screw 351 passes through the adjustment seat through hole of the corresponding adjustment seat 3511 and is rotatably connected to the adjustment seat through hole. An adjustment seat bearing 3512 is provided in the adjustment seat through hole. The adjustment seat bearing 3512 is sleeved on the outer periphery of the corresponding translation adjustment screw 351 to provide rotational support for the translation adjustment screw 351.

[0044] The flat drive assembly includes two flat cylinders 361, which correspond to two mounting plates 31 respectively. The flat cylinders 361 are located on the side of the corresponding mounting plate 31 away from the gravure roller 21. The output end of the flat cylinder 361 is located above the adjustment seat 3511 of the corresponding mounting plate 31 and is rotatably connected to the corresponding mounting plate 31. Specifically, the output end of the flat cylinder 361 is connected to a first fisheye connector 3611. The inner side of the mounting plate 31 is provided with a mounting plate connecting shaft 313. The first fisheye connector 3611 of the flat cylinder 361 is rotatably connected to the mounting plate connecting shaft 313 of the corresponding mounting plate 31. The mounting end of the horizontal push cylinder 361 is provided with a mounting shaft 3612. The ends of the mounting shafts 3612 of the two horizontal push cylinders 361 are respectively rotatably connected to the two side plates 10. Specifically, the ends of the mounting shafts 3612 are connected with second fisheye connectors 3613. The inner side of the side plate 10 is provided with a side plate connecting shaft 11. The second fisheye connectors 3613 of the two horizontal push cylinders 361 are respectively rotatably connected to the side plate connecting shafts 11 of the two side plates 10. The two horizontal push cylinders 361 are used to drive the two mounting plates 31 to move horizontally toward or away from the gravure roller 21.

[0045] Furthermore, the dot-coating diaphragm coating device also includes a first pass roller 51, an active pass roller 52, a pass roller motor, a second pass roller 53, a third pass roller 54, a fourth pass roller 55, a first flattening roller 61, a second flattening roller 62, a first adsorption roller 71, and a second adsorption roller 72.

[0046] The two ends of the first guide roller 51 are rotatably mounted on one end of each of the two side plates 10 via two first guide roller bearing seats. The active guide roller 52 and the second guide roller 53 are sequentially arranged between the first guide roller 51 and the approach roller mechanism 30 along the diaphragm's travel path. The active guide roller 52 is located below the approach roller mechanism 30, and its two ends are rotatably mounted on the inner side of each of the two side plates 10 via two active guide roller bearing seats. The guide roller motor is located on the outer side of one of the side plates 10, and one end of the active guide roller 52 passes through a hole in one of the side plates 10 and connects to the guide roller motor, which drives the active guide roller 52 to rotate. The second guide roller 53 is located below the mounting seats 341 of the two up-and-down adjustment components and on the side away from the center of the first approach roller 32, away from the gravure roller 21. The two ends of the second guide roller 53 are rotatably mounted on the inner side of each of the two mounting plates 31 via two second guide roller bearing seats, and the second guide roller 53 can move synchronously with the two mounting plates 31. The fourth guide roller 55 is located above the approach roller mechanism 30 and close to the other ends of the two side plates 10. Both ends of the fourth guide roller 55 are rotatably mounted on the inner sides of the two side plates 10 via two fourth guide roller bearing seats. The third guide roller 54 is positioned between the approach roller mechanism 30 and the fourth guide roller 55 along the diaphragm's travel path, and is located above the approach roller mechanism 30. Both ends of the third guide roller 54 are rotatably mounted on the inner sides of the two side plates 10 via two third guide roller bearing seats. The first guide roller 51, the third guide roller 54, and the fourth guide roller 55 support the diaphragm. The active guide roller 52 is driven to rotate by a guide roller motor, thereby traction of the diaphragm via the active guide roller 52. The second guide roller 53 guides the direction of the diaphragm.

[0047] The first flattening roller 61 is positioned between the first guide roller 51 and the active guide roller 52 along the diaphragm's travel path, below the material box 40. The second flattening roller 62 is positioned between the active guide roller 52 and the second guide roller 53 along the diaphragm's travel path, below the second guide roller 53 and above the active guide roller 52. The two ends of the first flattening roller 61 and the two ends of the second flattening roller 62 are rotatably mounted on the inner sides of the two side plates 10 via two first flattening bearing seats, respectively. The first flattening roller 61 is used for the first flattening of the diaphragm, and the second flattening roller 62 is used for the second flattening of the diaphragm, to prevent wrinkles in the diaphragm and facilitate the application of the coating slurry onto the diaphragm by the gravure roller 21, thus improving the coating quality.

[0048] The first adsorption roller 71 is positioned between the active guide roller 52 and the second flattening roller 62 along the diaphragm's travel path. The first adsorption roller 71 is located below the second flattening roller 62 and close to the other ends of the two side plates 10. The second adsorption roller 72 is positioned between the approach roller mechanism 30 and the third guide roller 54 along the diaphragm's travel path. The second adsorption roller 72 is located above the approach roller mechanism 30. The two ends of the first adsorption roller 71 and the two ends of the second adsorption roller 72 are rotatably mounted on the inner sides of the two side plates 10 via two first adsorption roller bearing seats, respectively. The first adsorption roller 71 and the second adsorption roller 72 are used to adsorb the diaphragm, providing traction and tension separation, facilitating the application of the coating slurry onto the diaphragm via the gravure roller 21, thereby improving the coating quality.

[0049] In practical applications, the diaphragm passes sequentially over the first guide roller 51, the first flattening roller 61, the active guide roller 52, the first adsorption roller 71, the second flattening roller 62, the second guide roller 53, the first approach roller 32, the second approach roller 33, the second adsorption roller 72, the third guide roller 54, and the fourth guide roller 55. Figure 2 As shown, the first approach roller 32 and the second approach roller 33 are driven to move horizontally toward the gravure roller 21 by the flat drive assembly, so that the diaphragm contacts the gravure roller 21. Then, the first approach roller 32 is driven to move up and down by two up and down adjustment components to adjust the contact position between the diaphragm and the gravure roller 21. Then, the first approach roller 32 and the second approach roller 33 are driven to move horizontally toward or away from the gravure roller 21 by two horizontal adjustment components to adjust the contact pressure between the diaphragm and the gravure roller 21. Then, the gravure roller 21 is driven to rotate by the gravure roller motor, so that the coating slurry entering the dotted grooves 211 can be coated onto the diaphragm through the gravure roller 21, thus realizing the coating of the diaphragm.

[0050] The proximity roller mechanism 30 of this utility model, through the arrangement of a first proximity roller 32, two up-and-down adjustment components, and two horizontal adjustment components, allows the first proximity roller 32 to move up and down via the two up-and-down adjustment components, and the first proximity roller 32 to move horizontally towards or away from the gravure roller 21 via the two horizontal adjustment components. This enables the adjustment of the contact position between the diaphragm and the gravure roller 21, as well as the adjustment of the contact pressure between the diaphragm and the gravure roller 21, thereby improving the coating quality and adapting to different diaphragms, thus having a wide range of applications.

[0051] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A dot-coating diaphragm coating apparatus, comprising two opposing side plates, a gravure roller mechanism, a proximity roller mechanism, and a material box, wherein the gravure roller mechanism includes a gravure roller and a gravure roller motor for driving the gravure roller to rotate, the two ends of the gravure roller are rotatably disposed on the inner sides of the two side plates, the gravure roller is located between the material box and the proximity roller mechanism, the two ends of the material box are respectively disposed on the inner sides of the two side plates, and the side of the material box near the gravure roller has a material groove communicating with the interior of the material box, the gravure roller is partially located in the material groove, the proximity roller mechanism includes two opposing mounting plates and a horizontal push drive assembly for driving the two mounting plates to move horizontally toward or away from the gravure roller, the two mounting plates are slidably disposed on the inner sides of the two side plates, characterized in that, The approach roller mechanism further includes a first approach roller, two up-and-down adjustment components and two horizontal adjustment components. The first approach roller corresponds to the gravure roller and its two ends are rotatably mounted on the two up-and-down adjustment components. The two up-and-down adjustment components are slidably mounted on the inner sides of the two mounting plates and are used to drive the first approach roller to move up and down. The two horizontal adjustment components are connected to the two mounting plates and are used to drive the two up-and-down adjustment components to move horizontally toward or away from the gravure roller.

2. The dot blotting membrane coating apparatus according to claim 1, wherein The approach roller mechanism further includes a second approach roller, the two ends of which are rotatably mounted on two up-down adjustment components. The second approach roller is located above the first approach roller and on the side of the center of the first approach roller that is close to the gravure roller.

3. The dot blotting membrane coating apparatus according to claim 2, wherein The up-down adjustment assembly includes a mounting base, a lower mounting block, an upper fixing block, a lower fixing block, an up-down adjustment block, and an up-down adjustment screw. The mounting bases of the two up-down adjustment assemblies are slidably disposed on the inner sides of the two mounting plates. The lower mounting block is disposed at the bottom end of the mounting base and close to one end of the mounting base. The upper fixing block and the lower fixing block are distributed vertically at intervals. The upper fixing block is disposed on the inner side of the mounting base, and the lower fixing block is disposed on the inner side of the lower mounting block. The up-down adjustment block is located between the upper fixing block and the lower fixing block. One end of the up-down adjustment screw is rotatably disposed at the top end of the lower fixing block. The other end of the up-down adjustment screw passes through the screw hole of the up-down adjustment block and the through hole of the upper fixing block and is located above the upper fixing block. The other end of the up-down adjustment screw is provided with an up-down adjustment handle. The up-down adjustment screw is threadedly connected to the screw hole of the up-down adjustment block and rotatably connected to the through hole of the upper fixing block. The two ends of the first approach roller are rotatably disposed on the inner sides of the up-down adjustment blocks of the two up-down adjustment assemblies. The lower fixed block is provided with a guide rod at its top end. The end of the guide rod away from the lower fixed block passes through the guide hole of the upper and lower adjusting block and is set at the bottom end of the upper fixed block. The upper and lower adjusting block can move up and down relative to the guide rod.

4. The dot blotting membrane coating apparatus according to claim 3, wherein The up-down adjustment assembly further includes an upper mounting block, a first support block, and a second support block. The upper mounting block is disposed at the top of the mounting base and corresponds to the upper fixed block. The first support block is disposed on the outside of the upper mounting block, and the second support block is disposed at the top of the first support block. The two ends of the second proximity roller are respectively rotatably disposed on the inner sides of the second support blocks of the two up-down adjustment assemblies.

5. The dot blotting membrane coating apparatus according to claim 3, wherein The horizontal adjustment assembly includes a translation adjustment screw. The translation adjustment screws of the two horizontal adjustment assemblies correspond to the mounting seats of the two vertical adjustment assemblies and the two mounting plates, respectively. One end of the mounting plate is provided with an adjustment seat. The translation adjustment screw is rotatably connected to the adjustment seat of the corresponding mounting plate and is located on the side of the corresponding mounting seat away from the gravure roller. The other end of the mounting seat is provided with a mounting seat through hole. The mounting seat is provided with a through groove that passes through its inner and outer sides. The mounting seat through hole communicates with the through groove. The other end of the mounting seat is provided with a translation adjustment block at the position corresponding to the mounting seat through hole. The screw hole of the translation adjustment block communicates with the mounting seat through hole. One end of the translation adjustment screw is provided with a translation adjustment handle. The other end of the translation adjustment screw passes through the screw hole of the translation adjustment block of the corresponding mounting seat, the mounting seat through hole of the corresponding mounting seat, and extends into the through groove of the corresponding mounting seat. The translation adjustment screw is threadedly connected to the screw hole of the translation adjustment block.

6. The spot coating diaphragm coating apparatus of claim 1, wherein, The flat push drive assembly includes two flat push cylinders, which correspond to two mounting plates respectively. The flat push cylinders are located on the side of the corresponding mounting plate away from the gravure roller, and the output end of the flat push cylinder is rotatably connected to the corresponding mounting plate. The mounting end of the flat push cylinder is provided with a mounting shaft, and the ends of the mounting shafts of the two flat push cylinders are rotatably connected to two side plates respectively.

7. The spot coating diaphragm coating apparatus of claim 1, wherein, The outer circumferential surface of the gravure roller is evenly distributed with several dot-shaped grooves.

8. The spot diaphragm coating apparatus of claim 1, wherein, The dot-coating diaphragm coating device further includes a first guide roller, an active guide roller, a guide roller motor for driving the active guide roller to rotate, a second guide roller, a third guide roller, and a fourth guide roller. The two ends of the first guide roller are rotatably disposed at one end of each of the two side plates. The active guide roller and the second guide roller are sequentially disposed between the first guide roller and the approach roller mechanism along the diaphragm's travel path. The active guide roller is located below the approach roller mechanism, and its two ends are rotatably disposed on the inner side of each of the two side plates. The second guide roller is located below the two up-and-down adjustment components and on the side away from the gravure roller at the center of the first approach roller. Its two ends are rotatably disposed on the inner side of each of the two mounting plates. The fourth guide roller is located above the approach roller mechanism and close to the other end of each of the two side plates. Its two ends are rotatably disposed on the inner side of each of the two side plates. The third guide roller is disposed between the approach roller mechanism and the fourth guide roller along the diaphragm's travel path, and is located above the approach roller mechanism. Its two ends are rotatably disposed on the inner side of each of the two side plates.

9. The spot diaphragm coating apparatus of claim 8, wherein, The dot-coating diaphragm coating device further includes a first flattening roller and a second flattening roller. The first flattening roller is disposed between the first guide roller and the active guide roller along the travel path of the diaphragm. The second flattening roller is disposed between the active guide roller and the second guide roller along the travel path of the diaphragm. The two ends of the first flattening roller and the two ends of the second flattening roller are rotatably disposed on the inner sides of the two side plates, respectively.

10. The dot blotting membrane coating apparatus according to claim 9, wherein The dot-coating diaphragm coating device further includes a first adsorption roller and a second adsorption roller. The first adsorption roller is disposed between the active pass roller and the second flattening roller along the travel path of the diaphragm. The second adsorption roller is disposed between the approach roller mechanism and the third pass roller along the travel path of the diaphragm. The two ends of the first adsorption roller and the two ends of the second adsorption roller are respectively rotatably disposed on the inner sides of the two side plates.

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