Air flotation wrinkle removal roller and coating equipment

Abstract

The utility model discloses an air-floating wrinkle-removing roller and coating equipment, including an air-floating rotating shaft and an air-floating plate, wherein rotating shaft fixing mechanisms are provided on both sides of the air-floating rotating shaft, an air-floating fixing seat is provided at the bottom of the air-floating plate, and the air-floating plate is arranged on the air-floating rotating shaft through the air-floating fixing seat; a plurality of air holes are provided on the upper surface of the air-floating plate, and the air holes are evenly distributed on the upper surface of the air-floating plate; a plurality of air pipe joints are provided on the air-floating plate, the interior of the air-floating plate is hollow, the air pipe joints are connected to the interior of the air-floating plate, and the air pipe joints are used to connect to an external air source to transport gas to the air holes. The air film can fully support the electrode coating area and the blank area, eliminating the wrinkling phenomenon of the electrode. The air-floating plate can provide contactless support for the electrode, and can avoid adverse effects on the coating surface.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to an air-floating wrinkle-removing roller and coating equipment. Background Art

[0002] In the lithium battery industry, coating is a critical process in lithium battery production. The quality of coating directly affects the quality and service life of lithium batteries. However, during the coating process, one of the technical difficulties that affects the coating quality is the wrinkle problem of the pole piece, that is, during the zebra coating / intermittent coating process, there is a height difference between the area with slurry and the area without slurry. The pole piece cannot completely contact the support roller in the direction of the belt, and the high-speed movement of the pole piece will cause shaking, thereby causing wrinkles. More importantly, because the negative electrode slurry is particularly prone to cracking, the A-side coating is often kept at a certain humidity when passing through the first layer of the oven to prevent it from being too dry and cracked when passing through the second layer of the oven; this in turn causes the undried coating on the A-side to be more easily scratched by the friction of the conventional wrinkle removal roller when climbing a slope. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an air-floating wrinkle-removing roller and coating equipment. An air-floating plate is arranged on the wrinkle-removing roller. The air-floating plate outputs gas through micron-sized pores. The electrode passes on the upper surface of the air-floating plate, and a layer of air film is formed between the electrode and the air-floating plate. The air film can fully support the electrode coating area and the blank area, eliminating the wrinkling phenomenon caused by the blank area not being effectively supported. The air-floating plate can provide contactless support for the electrode. The air-floating plate and the electrode are separated by a layer of air film, which can avoid adverse effects on the coating surface and protect the undried coating on the A side from being damaged.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A kind of air flotation wrinkle removal roller comprises an air flotation shaft and an air flotation plate, wherein shaft fixing mechanisms are provided on both sides of the air flotation shaft, an air flotation fixing seat is provided at the bottom of the air flotation plate, and the air flotation plate is arranged on the air flotation shaft through the air flotation fixing seat; a plurality of air holes are provided on the upper surface of the air flotation plate, and the air holes are evenly distributed on the upper surface of the air flotation plate; a plurality of air pipe joints are provided on the air flotation plate, the interior of the air flotation plate is hollow, the air pipe joints are connected to the interior of the air flotation plate, and the air pipe joints are used to connect to an external air source to transport gas to the air holes.

[0006] As a further improvement of the above technical solution, the diameter of the pores is less than or equal to 100 microns.

[0007] As a further improvement of the above technical solution, the upper surface of the air floating plate is a curved surface.

[0008] As a further improvement of the above technical solution, a porous medium material is provided inside the air flotation plate.

[0009] As a further improvement of the above technical solution, the air floating fixed seat includes a support plate and a fixed block, the air floating plate is fixed on the support plate; a support block is provided under the support plate, the support block is provided with a semi-circular groove, the fixed block is provided with a semi-circular groove, the fixed block is provided with a semi-circular groove, the fixed block is provided under the support block, the support block and the semi-circular groove of the fixed block cooperate to form a through groove, and the rotating shaft is fixed in the through groove.

[0010] As a further improvement of the above technical solution, the fixing block and the supporting block are fixed by screws, and the air-floating shaft is locked in the through groove by the screws.

[0011] As a further improvement of the above technical solution, the rotating shaft fixing mechanism includes a fixing plate, the air-floating rotating shaft passes through the fixing plate, and the fixing plate is fixed to the air-floating rotating shaft by a locking member.

[0012] As a further improvement of the above technical solution, the locking member is a circular ring member with a notch, the notch is provided with a screw, the screw is used to reduce the notch, and the locking member is fixed to the air-floating shaft and the fixed plate by the screw.

[0013] As a further improvement of the above technical solution, the fixing plate is further provided with a fixing hole and a swinging groove, screws are passed through the fixing hole to fix the fixing plate on the frame, and screws are passed through the swinging groove.

[0014] On the other hand, a coating device is also provided, comprising any of the above-mentioned air-floating wrinkle-removing rollers.

[0015] The beneficial effect of the utility model is that by setting an air flotation plate, gas is output on the surface of the air flotation plate, and the electrode passes through the air flotation plate and is supported by the air film. The electrode coating area and the blank area can be fully supported to ensure that the entire electrode can be effectively supported, and the electrode can be prevented from wrinkling due to the blank area not being effectively supported. In addition, the air flotation plate can support the electrode without contact, which can eliminate the adverse effects of using a physical wrinkle removal roller to contact the coating surface when the coating area is not completely dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the assembly of the utility model;

[0018] Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle;

[0019] Figure 3 This is the front view of the utility model assembly;

[0020] Figure 4 This is a schematic diagram of the air floating plate and the air floating fixing seat of the utility model;

[0021] Figure 5 It is a schematic diagram of the use state of the utility model.

[0022] Explanation of the reference numerals: 1-air-floating shaft; 11-fixed plate; 111-locking piece; 112-swinging groove; 2-air-floating plate; 21-air pipe joint; 22-air-floating fixing seat; 221-support plate; 222-support block; 223-fixed block; 224-through groove; 23-air hole; 3-pole piece; 31-coating area; 4-air film. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. 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 according to the specific implementation situation, a better connection structure can be formed by adding or reducing connection accessories. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the creation of the utility model can be combined interactively without conflicting with each other.

[0024] Reference Figure 1 , Figure 2 as well as Figure 3 The utility model provides an air flotation wrinkle removal roller, comprising an air flotation shaft 1 and an air flotation plate 2. The air flotation plate 2 is arranged on the air flotation shaft 1. When the pole piece 3 passes through the air flotation wrinkle removal roller, it passes through the air flotation plate 2. The air flotation plate 2 can output gas to form a layer of air film 4, which fully supports the coated area 31 and the blank area of ​​the pole piece 3, thereby preventing the pole piece 3 from wrinkling.

[0025] Wherein, a shaft fixing mechanism is provided on both sides of the air-floating shaft 1, which is used to fix the air-floating shaft 1 in the frame of the equipment, so that the air-floating wrinkle removal roller is fixed in the equipment as a whole. An air-floating fixing seat 22 is provided at the bottom of the air-floating plate 2, and the air-floating plate 2 is arranged on the air-floating shaft 1 through the air-floating fixing seat 22. The air-floating fixing seat 22 can fasten the air-floating plate 2 on the air-floating shaft 1 to prevent the air-floating plate 2 from rotating on the air-floating shaft 1, thereby affecting the passage of the pole piece 3.

[0026] Furthermore, a plurality of air holes 23 are formed on the upper surface of the air floating plate 2, and the air holes 23 are evenly distributed on the upper surface of the air floating plate 2. The air floating plate 2 is hollow inside, and the air holes 23 connect the inside of the air floating plate 2 with the outside, and are used to transport gas outward. The air holes 23 are micrometer-sized, and can output fine airflows. Most of the airflows converge to form a layer of air film 4 on the upper surface of the air floating plate 2.

[0027] A plurality of air pipe joints 21 are provided on the air floating plate 2, and the air pipe joints 21 are used to connect to an external air source, and the air pipe joints 21 lead to the inside of the air floating plate 2 and communicate with air holes 23 on the upper surface of the air floating plate 2. The external air source delivers the gas to the inside of the air floating plate 2 through the air pipe joints 21, so that the gas is output from the air holes 23.

[0028] Please refer to Figure 5 After the electrode 3 is coated, it includes a coating area 31 and a blank area. The blank area is prone to wrinkling when the electrode 3 is transported. In addition, the slurry in the coating area 31 contacts the physical wrinkle removal roller, which is likely to have an adverse effect on the coating surface.

[0029] By setting up the air flotation plate 2, the air flotation plate 2 outputs gas through the micron-sized pores 23, and the pole piece 3 passes on the upper surface of the air flotation plate 2, forming a layer of air film 4 between the pole piece 3 and the air flotation plate 2. After the pole piece 3 is coated, including the coating area 31 and the blank area, the air film 4 on the surface of the air flotation plate 2 can fully support the coating area 31 and the blank area of ​​the pole piece 3, eliminating the wrinkling phenomenon caused by the blank area not being effectively supported. In addition, the air flotation plate 2 can provide contactless support for the pole piece 3, and the air flotation plate 2 and the pole piece 3 are separated by a layer of air film 4, which can avoid the adverse effects on the coating surface caused by the coating area 31 using a physical wrinkle removal roller to contact the pole piece 3 when the pole piece 3 is not completely dried.

[0030] Furthermore, in order to ensure that the pores 23 on the air floating plate 2 output a fine airflow to form a layer of air film 4, the pores 23 are of micron size, wherein the diameter of the pores 23 is less than or equal to 100 microns. The micron-sized pores 23 can generate very fine airflow, making the air film 4 more uniform and stable. Such fine airflow can achieve precise control and suspension of the object, so that the pole piece 3 is suspended on the air floating plate 2, and the entire area of ​​the pole piece 3 is supported.

[0031] Furthermore, the upper surface of the air flotation plate 2 is an arc-shaped surface, and the arc-shaped surface is an arc-shaped outward protrusion. The arc-shaped surface as a curved surface allows the pole piece 3 to contact a wider area when passing through the air flotation plate 2, thereby increasing the contact area. Moreover, due to the increase in the contact area, the distribution range of the pores 23 is wider, thereby expanding the range of action of the air flotation force, providing greater support and suspension effect. Furthermore, the arc-shaped surface can make the airflow more evenly distributed on the pole piece 3 when passing through, reduce the concentration and unevenness of the airflow, and produce a more uniform air film 4 on the surface of the pole piece 3, thereby improving the stability and accuracy of the air flotation effect.

[0032] The air flotation plate 2 is hollow inside, and the gas enters the air flotation plate 2 and then exits from the air holes 23. A porous medium material is provided inside the air flotation plate 2. The multiple small pores inside the porous medium material can increase the dispersion and diffusion of the air flow, so that the air flow passes through the air flotation plate 2 more evenly, thereby improving the stability and precision of the air flotation plate 2.

[0033] Please refer to Figure 4 In order to keep the air-floating plate 2 stable, the air-floating plate 2 is fixed on the air-floating shaft 1 through an air-floating fixing seat 22. The air-floating fixing seat 22 is provided with a support plate 221 and a fixing block 223. The support plate 221 is a flat plate, and the air-floating plate 2 is fixed on the support plate 221.

[0034] A support block 222 is provided below the support plate 221 for cooperating and fixing with a fixing block 223. The support block 222 is provided with a semicircular groove, and the fixing block 223 is also provided with a semicircular groove. The semicircular groove of the support block 222 is opened from bottom to top, and the semicircular groove of the fixing block 223 is opened from top to bottom. The fixing block 223 is provided below the support block 222, and the two semicircular grooves cooperate to form a through groove 224.

[0035] The fixing block 223 is fixed below the supporting block 222 by screws, and the air-floating shaft 1 is arranged in the through groove 224 . The fixing block 223 and the supporting block 222 are locked by screws, so that the fixing seat is fixed on the air-floating shaft 1 .

[0036] Please refer again Figure 1, a shaft fixing mechanism is provided on both sides of the air-floating shaft 1, which is used to fix the air-floating shaft 1 in the frame of the equipment. The shaft fixing mechanism includes a fixing plate 11, the air-floating shaft 1 passes through the fixing plate 11, and the air-floating shaft 1 is fixed to the fixing plate 11 by a locking member 111. The locking member 111 is a circular ring member with a notch, the air-floating shaft 1 passes through the circular ring, and the air-floating shaft 1 is fixed to the inner hole of the locking member 111 by setting screws at the notch. And the locking member 111 is arranged at a position where the air-floating shaft 1 extends out of the fixing plate 11 to prevent the air-floating shaft 1 from falling off the fixing plate 11.

[0037] Furthermore, screws are also arranged on the periphery of the locking member 111, and the screws are inserted into the locking member 111 and the air-floating shaft 1 to prevent the air-floating shaft 1 from rotating in the locking member. A screw is also arranged on the top surface of the locking member 111 to fix the locking member 111 on the fixing plate 11.

[0038] The fixing plate 11 is also provided with a fixing hole and a swinging groove 112. The fixing plate 11 is screwed through the fixing hole to fix the fixing plate on the frame. The swinging groove 112 is in the shape of a long arc-shaped through groove, and the curved curve of the swinging groove 112 takes the fixing hole as the center. A screw is inserted through the swinging groove 112, and the screw is fixed on the frame. The fixing plate 11 is fixed to the frame through the fixing hole and the swinging groove 112 with the screws. The fixing plate 11 is fixed to the frame by the adjustable screws in the swinging groove 112, so that the fixing plate 11 has a certain swing.

[0039] The fixing plate 11 is fastened to the frame by screws. When the angle of the air floating plate 2 needs to be adjusted, the screws are loosened to allow the fixing plate 11 to move within the swing slot 112 and adjust to the required angle of the air floating plate 2, and then the screws are tightened.

[0040] The wrinkle removal roller of the utility model is provided with an air flotation plate 2, and gas is outputted on the surface of the air flotation plate 2. The pole piece 3 passes through the air flotation plate 2 and is supported by the air film 4. The coated area 31 and the blank area of ​​the pole piece 3 can be fully supported to ensure that the pole piece 3 as a whole can be effectively supported, and the wrinkle phenomenon of the pole piece 3 due to the ineffective support of the blank area can be avoided. In addition, the air flotation plate 2 can provide contactless support for the pole piece 3, and can eliminate the adverse effects on the coated surface caused by the use of a physical wrinkle removal roller when the coated area 31 is not completely dried. The interior of the air flotation plate 2 is also provided with a sponge-like structure. When the gas enters the interior of the air flotation plate 2, the speed of the compressed air can be effectively reduced to reduce the impact of the compressed air on the substrate, thereby improving the stability of the substrate.

[0041] The utility model also provides a coating device, including the beneficial effects of any of the above-mentioned air-floating wrinkle-removing rollers, which will not be described in detail.

[0042] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An air flotation wrinkle removal roller, characterized in that: It includes an air-floating shaft and an air-floating plate, wherein shaft fixing mechanisms are provided on both sides of the air-floating shaft, an air-floating fixing seat is provided at the bottom of the air-floating plate, and the air-floating plate is arranged on the air-floating shaft through the air-floating fixing seat; a plurality of air holes are provided on the upper surface of the air-floating plate, and the air holes are evenly distributed on the upper surface of the air-floating plate; a plurality of air pipe joints are provided on the air-floating plate, the interior of the air-floating plate is hollow, the air pipe joints are connected to the interior of the air-floating plate, and the air pipe joints are used to connect to an external air source to transport gas to the air holes.

2. The air flotation wrinkle removal roller according to claim 1, characterized in that: The pore diameter is less than or equal to 100 microns.

3. The air flotation wrinkle removal roller according to claim 1, characterized in that: The upper surface of the air floating plate is an arc-shaped surface.

4. The air flotation wrinkle removal roller according to claim 1, characterized in that: A porous medium material is arranged inside the air floating plate.

5. The air flotation wrinkle removal roller according to claim 1, characterized in that: The air-floating fixed seat includes a support plate and a fixed block, the air-floating plate is fixed on the support plate; a support block is provided under the support plate, the support block is provided with a semi-circular groove, the fixed block is provided with a semi-circular groove, the fixed block is provided under the support block, the support block and the semi-circular groove of the fixed block cooperate to form a through groove, and the rotating shaft is fixed in the through groove.

6. The air flotation wrinkle removal roller according to claim 5, characterized in that: The fixing block and the supporting block are fixed by screws, and the air-floating shaft is locked in the through slot by the screws.

7. The air flotation wrinkle removal roller according to claim 5, characterized in that: The rotating shaft fixing mechanism comprises a fixing plate, the air-floating rotating shaft passes through the fixing plate, and the fixing plate is fixed on the air-floating rotating shaft through a locking member.

8. The air flotation wrinkle removal roller according to claim 7, characterized in that: The locking member is a circular ring member with a notch, the notch is provided with a screw, the screw is used to reduce the notch, and the locking member is fixed to the air-floating shaft and the fixing plate by the screw.

9. The air flotation wrinkle removal roller according to claim 8, characterized in that: The fixing plate is also provided with a fixing hole and a swinging groove, screws are passed through the fixing hole to fix the fixing plate on the frame, and screws are passed through the swinging groove.

10. A coating device, characterized in that: It comprises the air floating wrinkle-removing roller described in any one of claims 1-9.

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