Air floatation passing roller and drying oven with air floatation passing roller

Abstract

The air floatation passing roller comprises a roller body internally provided with a pressure equalizing cavity, a porous assembly, a pressure equalizing mesh plate and an air inlet pipe, the roller body is provided with an air inlet and an air outlet, the porous assembly is connected to the air outlet, the air inlet pipe is connected to the air inlet, the pressure equalizing mesh plate is connected to the air inlet, and the pressure equalizing mesh plate is connected to the air inlet. The pressure-equalizing mesh plate is connected in the roller body, and the pressure-equalizing mesh plate is parallel to the air outlet and is arranged above the air inlet. According to the air floatation passing roller, a solid passing roller is replaced, and the floating force of the pole piece is provided through air floatation, so that the pole piece is not contacted with the surface of the air floatation passing roller, and the adverse effect of the solid passing roller is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery pole piece coating, in particular to an air floating roller and an oven with the air floating roller. Background Art

[0002] In the process of coating and drying lithium electrode sheets, physical rollers are generally used, which have the functions of supporting the electrode sheets, reducing vibration, and steering. However, the physical rollers in the oven often have too high roller surface temperature due to the high drying temperature of the oven. The electrode sheets come into contact with the high temperature physical rollers, which can easily cause dark marks on the surface of the electrode sheets, affecting the drying quality of the electrode sheets and affecting battery performance and safety.

[0003] Therefore, it is necessary to provide an air floating roller and an oven having the air floating roller to solve the above problems. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an air flotation roller and an oven with the air flotation roller, which replace the physical roller and provide pole piece buoyancy through air flotation, so that the pole piece does not contact the surface of the air flotation roller, eliminating the adverse effects of the physical roller.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An air flotation roller comprises a roller body with a pressure equalizing chamber, a porous component, a pressure equalizing mesh plate and an air inlet pipe, the roller body is provided with an air inlet and an air outlet, the porous component is connected to the air outlet, the air inlet pipe is connected to the air inlet, the pressure equalizing mesh plate is connected to the roller body, and the pressure equalizing mesh plate is arranged above the air inlet in parallel with the air outlet.

[0007] As a further improvement of the above technical solution, the porous component includes a stacked fixing member and a porous medium plate, and the fixing member is provided with long holes along the length direction of the roller body, and the porous medium plate is connected to the long holes.

[0008] As a further improvement of the above technical solution, a sealing member is provided between the fixing member and the roller body.

[0009] As a further improvement of the above technical solution, the porous component is arranged in a planar structure or an arc structure.

[0010] As a further improvement of the above technical solution, the roller body is a bent one-piece structure, and is surrounded by a first side plate, a second side plate, a third side plate and a fourth side plate, and the first side plate and the third side plate are both bent outward to have a mounting plate, and the porous component is fixedly connected to the mounting plate.

[0011] As a further improvement of the above technical solution, connecting plates extend outward from both ends of the mounting plate, and the second side plate and the fourth side plate are provided with snap-fitting positions, and the connecting plates are snap-fitted to the snap-fitting positions.

[0012] As a further improvement of the above technical solution, a connecting piece is provided between the first side plate and the third side plate, and the two connecting pieces are respectively connected to the second side plate and the fourth side plate.

[0013] As a further improvement of the above technical solution, mounting parts for structural fixation are provided on both sides of the roller body.

[0014] The utility model also discloses an oven, comprising an oven body, a hull and a plurality of air-floating rollers as described above, wherein the hull and the air-floating rollers are arranged in the oven body, a plurality of air knives are arranged at the lower end of the hull, and the air-floating rollers are evenly arranged below the air knives.

[0015] The beneficial effects of the utility model are as follows: the utility model provides the electrode with sufficient buoyancy by utilizing the air flotation principle, satisfies the stable floating conveying of the electrode, and can replace the use of conventional physical rollers; and a pressure equalizing mesh plate is arranged in the pressure equalizing chamber, so that the gas is pressure-equalized once in the pressure equalizing chamber and then blown out from the porous roller surface for a second pressure equalization, thereby providing the electrode with a more stable buoyancy, making the electrode always in a suspended state during the drying process, avoiding contact between the electrode and the roller surface with a higher temperature, and solving the problems of dark marks caused by the electrode contacting the high-temperature roller surface and instability at the beginning of coating and drying. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 This is a structural schematic diagram of the utility model air floating roller from one perspective;

[0018] Figure 2 This is a schematic structural diagram of the air floating roller of the utility model from another perspective;

[0019] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the split structure of the air floating roller of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the air floating roller of the utility model;

[0022] Figure 6 It is a schematic diagram of the planar structure of the oven of the utility model;

[0023] Figure 7 It is an application schematic diagram of the air floating roller of the utility model.

[0024] Figure numerals: 1. roller body; 101. air inlet; 102. air outlet; 103. first side plate; 104. second side plate; 105. third side plate; 106. fourth side plate; 107. mounting plate; 108. connecting plate; 109. snap-in position; 2. porous component; 21. fixing piece; 22. sealing piece; 23. long holes; 3. pressure equalizing mesh plate; 4. air inlet pipe; 5. pressure equalizing chamber; 6. connecting piece; 7. mounting piece; 8. pole piece; 9. oven body; 10. hull; 11. wind knife. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1 , Figure 2 , Figure 5An air flotation roller comprises a roller body 1 with a pressure equalizing chamber 5, a porous component 2, a pressure equalizing mesh plate 3 and an air inlet pipe 4, wherein the roller body 1 is provided with an air inlet 101 and an air outlet 102, and the porous component 2 is connected to the air outlet 102, and the air inlet pipe 4 is connected to the air inlet 101, so that the gas can enter the roller body 1 from the air inlet 101 through the air inlet pipe 4, and then blown out from the air outlet 102, providing buoyancy for the electrode piece walking on the roller, so that the electrode piece is always in a suspended state during the drying process, avoiding the electrode piece from contacting with the roller surface with a higher temperature, so as to prevent The electrode plate contacts the high-temperature roller surface to produce dark marks, and there are several through holes on the porous component 2. The gas is blown out evenly from the through holes to make the electrode plate float stably; the pressure equalizing mesh plate 3 is connected to the roller body 1, and the pressure equalizing mesh plate 3 is arranged above the air inlet 101 in parallel with the air outlet 102, so that the pressure equalizing mesh plate 3 divides the pressure equalizing chamber 5 into a first pressure equalizing chamber and a second pressure equalizing chamber. The gas first enters the first pressure equalizing chamber for the first pressure equalization, and then is blown into the second pressure equalizing chamber from the through holes of the pressure equalizing mesh plate 3 for the second pressure equalization, so that the air outlet uniformity of the porous roller surface is better, providing a more stable floating force for the electrode plate.

[0027] Reference Figure 4 , Figure 5 In an embodiment of the utility model, the porous component 2 includes a stacked fixing member 21 and a porous medium plate, wherein the porous medium plate can be made of a high-resistance material, such as sintered graphite, or a porous structure such as a sintered mesh screen, and is arranged at the air outlet 12 to reduce the channel for gas blowing out, reduce the air outlet speed of the roller surface, and make the floating height of the pole piece small and the floating stable. At the same time, the pressure inside the roller body is also increased, so that the air outlet of the roller surface is more uniform, providing a stable buoyancy force for the pole piece; at the same time, a long strip hole 23 is arranged on the fixing member 21 along the length direction of the roller body, and the porous medium plate is connected to the long strip hole 23, so that the gas in the pressure equalization chamber 5 can be blown out through the porous medium plate, thereby achieving a uniform wind effect.

[0028] Specifically, a sealing member 22 is provided between the fixing member 21 and the roller body 1 to seal the pressure equalizing chamber 5 to prevent air leakage in the pressure equalizing chamber from affecting the stable tape running of the pole piece.

[0029] Reference Figure 6 In an embodiment of the utility model, the porous component 2 can be set to a planar structure. The air floating roller of this structure can be used to replace the physical roller of the negative electrode oven, the primer oven, etc. The air floating roller provides buoyancy for the electrode piece so that the electrode piece does not contact the high-temperature roller to solve the problem of dark marks on the electrode piece and unstable coating.

[0030] Reference Figure 7The porous component 2 may also be provided with an arc-shaped structure, and the air-floating roller of this structure may be used for wet film steering. The air-floating roller may make the pole piece float, so that the wet coating does not contact the roller surface, and the wet coating remains intact, thereby avoiding the pole piece from being too dry and cracked due to stress caused by the high roller temperature.

[0031] Reference Figure 2 , Figure 3 , Figure 4 In an embodiment of the utility model, the roller body 1 is a bent one-piece structure, and the roller body 1 is surrounded by a first side plate 103, a second side plate 104, a third side plate 105 and a fourth side plate 106, and the four side plates are welded to the bottom plate to form a sealed equalizing pressure chamber 5; and the first side plate 103 and the third side plate 105 are both bent outward to have a mounting plate 107, and the porous component 2 is fixedly connected to the mounting plate, which can avoid the porous component 2 being directly connected to the side plate of the roller body 1. The porous component 2 is fixed by screws, and there will inevitably be gaps in the screw connection, which will reduce the sealing of the equalizing pressure chamber 5 and affect the stability of the pole piece floating. Therefore, a bent mounting plate 107 is used to connect the porous component 2 to ensure the sealing of the equalizing pressure chamber 5.

[0032] Specifically, connecting plates 108 extend outward from both ends of the mounting plate 107, and the second side plate 104 and the fourth side plate 106 are provided with snap-in positions 109, and the connecting plates 108 are snap-into the snap-in positions 109, which play a positioning role in the connection of the side plates, making welding between the side plates more convenient and reducing welding errors.

[0033] Specifically, a connecting piece 6 is provided between the first side plate 103 and the third side plate 105, and the two connecting pieces 6 are respectively connected to the second side plate 104 and the fourth side plate 106. The connecting piece 6 can be set as a fixed connecting block, which is located in the middle of the porous component 2 to provide a connection position for the porous component 2, thereby ensuring the stability of the porous component 2, and at the same time, the gas in the pressure equalization chamber 5 can only be blown out from the porous medium plate.

[0034] Reference Figure 1 In the embodiment of the utility model, mounting parts 7 are provided on both sides of the roller body 1, which can be configured as mounting fixing plates, and the air-floating roller can be fixed by the mounting fixing plates to ensure the stability of the pole piece tape.

[0035] Reference Figure 6The utility model also provides an oven, including an oven body 9, a hull 10 and a plurality of air-floating rollers as described above, wherein the hull 10 and the air-floating rollers are arranged in the oven body 9, and a plurality of air knives 11 are arranged at the lower end of the hull 10, and the air-floating rollers are evenly arranged below the air knives 11, and the pole piece 8 flows between the air knives 101 and the air-floating rollers for drying, and the air-floating rollers provide buoyancy for the pole piece so that the pole piece does not contact the high-temperature rollers to solve the problems of dark marks on the pole piece and unstable coating. The specific structure of the air-floating rollers refers to the above-mentioned embodiments. Since the present oven adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0036] 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 roller, characterized in that: It includes a roller body with a pressure equalizing chamber, a porous component, a pressure equalizing mesh plate and an air inlet pipe. The roller body is provided with an air inlet and an air outlet. The porous component is connected to the air outlet, the air inlet pipe is connected to the air inlet, the pressure equalizing mesh plate is connected to the roller body, and the pressure equalizing mesh plate is arranged above the air inlet in parallel with the air outlet.

2. The air floating roller according to claim 1, characterized in that: The porous component comprises a stacked fixing member and a porous medium plate, and the fixing member is provided with long holes along the length direction of the roller body, and the porous medium plate is connected to the long holes.

3. The air floating roller according to claim 2, characterized in that: A sealing member is arranged between the fixing member and the roller body.

4. The air floating roller according to claim 1, characterized in that: The porous component is arranged in a planar structure or an arc structure.

5. The air floating roller according to claim 1, characterized in that: The roller body is a bent one-piece structure, and is surrounded by a first side plate, a second side plate, a third side plate and a fourth side plate. The first side plate and the third side plate are both bent outward to form a mounting plate, and the porous component is fixedly connected to the mounting plate.

6. The air floating roller according to claim 5, characterized in that: Connecting plates are extended outwardly from both ends of the mounting plate, and the second side plate and the fourth side plate are provided with clamping positions, and the connecting plates are clamped on the clamping positions.

7. The air floating roller according to claim 5, characterized in that: A connecting piece is provided between the first side plate and the third side plate, and the two connecting pieces are connected to the second side plate and the fourth side plate respectively.

8. The air floating roller according to claim 1, characterized in that: Mounting parts are arranged on both sides of the roller body.

9. An oven, characterized in that: It comprises an oven body, a hull and a plurality of air-floating rollers as claimed in any one of claims 1 to 8, wherein the hull and the air-floating rollers are arranged in the oven body, a plurality of air knives are arranged at the lower end of the hull, and the air-floating rollers are evenly arranged below the air knives.

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