Coating device and coating equipment

Abstract

The utility model relates to the technical field of base material coating equipment, and discloses a coating device and coating equipment. The coating equipment comprises a coating device and a drying oven, the coating device comprises a rack, a coating mechanism, an unwinding mechanism and a winding mechanism, the rack comprises a box body defined by vertical supports and a bearing platform, the bearing platform is horizontally arranged above the box body, the coating mechanism is arranged on the bearing platform, the unwinding mechanism is installed on at least one support and located in the box body, and the winding mechanism is located in the box body. The winding mechanism is installed on at least one support and located in the box body, and the unwinding mechanism and the winding mechanism are symmetrically arranged relative to the vertical plane. The coating device disclosed by the utility model is compact in overall structure, small in occupied area, short in overall conveying length of a material belt, convenient to operate, low in cost, uniform in overall gravity center distribution and good in supporting stability.

Description

Technical Field

[0001] This utility model relates to the technical field of substrate coating equipment, and in particular to a coating device and coating equipment. Background Technology

[0002] The materials used to manufacture battery electrodes require coating a slurry onto a substrate during the manufacturing process. The substrate is stored in the form of a strip roll before and after coating. Therefore, existing coating equipment typically includes an unwinding device, a coating device, and a winding device, and these three devices are independent of each other. On the one hand, this results in a large overall length of equipment, leading to insufficient factory space to accommodate the coating equipment. On the other hand, the overall strip travel distance is long, so more adjusting rollers are needed to adjust the strip direction, resulting in complex strip threading, inconsistent operation, and high equipment costs.

[0003] Therefore, there is an urgent need for a coating device and coating equipment to solve the above-mentioned technical problems. Utility Model Content

[0004] One objective of this invention is to provide a coating device with a compact overall structure, small footprint, short overall belt length, convenient operation, low cost, and uniform overall center of gravity distribution and good support stability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Coating apparatus, comprising:

[0007] The frame includes a box formed by vertical supports and a support platform, wherein the support platform is horizontally positioned above the box;

[0008] The coating mechanism is located on the support platform;

[0009] An unwinding mechanism, mounted on at least one of the supports and located within the housing; and

[0010] A winding mechanism is mounted on at least one of the brackets and located inside the housing;

[0011] The unwinding mechanism and the winding mechanism are arranged symmetrically about the vertical plane.

[0012] As an optional solution, the coating apparatus further includes a tape-splitting platform disposed within the housing and located vertically between the coating mechanism and the unwinding mechanism. The housing is provided with a window corresponding to the tape-splitting platform, the window being configured to expose the tape-splitting platform.

[0013] As an optional solution, the coating apparatus further includes a tape-splitting platform, which is disposed between the coating mechanism and the unwinding mechanism. The tape-splitting platform forms an angle with the vertical plane, and the angle is 30° to 60°.

[0014] As an optional solution, the coating device further includes two auxiliary rollers, which are respectively disposed at both ends of the tape receiving platform along the tape feeding direction. The surfaces of the two auxiliary rollers that contact the tape are coplanar with the plane of the tape receiving platform through which the tape is fed.

[0015] As an optional solution, a first floating roller is provided between the tape receiving platform and the coating mechanism. The first floating roller is wound with the feed tape and can float up and down to adjust the tension of the feed tape; and / or

[0016] An over-roller is provided between the tape receiving platform and the unwinding mechanism.

[0017] As an alternative, a traction component is provided upstream of the winding mechanism along the belt travel direction. The traction component includes a pressure roller and a traction roller, which form a pair of rollers through which the feed belt passes. The traction component is capable of providing traction force to the feed belt.

[0018] As an alternative, the distance between the pressure roller and the traction roller is adjustable, so that the traction force of the traction assembly on the material belt is adjustable.

[0019] As an alternative, a second floating roller is provided upstream of the traction assembly along the belt travel direction. The second floating roller is configured to be wound around the feed belt and can float up and down to adjust the tension of the feed belt.

[0020] As an optional solution, an overroller is provided between the winding mechanism and the traction assembly.

[0021] Another objective of this invention is to provide a coating device that, by adopting the above-mentioned coating device, has a compact overall structure, occupies a small area, has a short overall conveyor belt length, is easy to operate, and has low cost.

[0022] To achieve this objective, the present invention adopts the following technical solution:

[0023] The coating equipment includes an oven and the coating device, wherein the unwinding mechanism unwinds the material strip sequentially through the coating mechanism and the oven and is wound up by the winding mechanism.

[0024] The beneficial effects of this utility model are:

[0025] This invention relates to a coating apparatus that integrates the coating mechanism, unwinding mechanism, and rewinding mechanism onto a single frame. The unwinding and rewinding mechanisms are positioned below the coating mechanism, causing them to overlap vertically. This significantly reduces the footprint of the entire coating apparatus, preventing space constraints and ensuring its suitability for the factory. Compared to separate configurations, this design also reduces the overall tape travel distance, thereby decreasing the number of adjusting rollers, improving tape threading convenience, and lowering manufacturing costs. Furthermore, the symmetrical arrangement of the unwinding and rewinding mechanisms about the vertical plane ensures uniform weight distribution and balanced stress distribution, thus guaranteeing the stability of the entire coating apparatus.

[0026] The coating equipment of this utility model, by adopting the above-mentioned coating device, has a compact overall structure, small footprint, short overall belt length, convenient operation, and low cost. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the coating equipment provided in a specific embodiment of the present invention;

[0028] Figure 2 This is a side view of the coating device provided in a specific embodiment of this utility model.

[0029] In the picture:

[0030] 100. Coating apparatus;

[0031] 10. Frame; 11. Housing; 12. Load-bearing platform;

[0032] 20. Coating mechanism;

[0033] 30. Unwinding mechanism;

[0034] 40. Receiving and unloading mechanism;

[0035] 50. Connecting platform;

[0036] 61. Auxiliary roller; 62. Passing roller;

[0037] 71. First floating roller; 72. First driving component; 73. First connecting component; 74. First guide post;

[0038] 80. Traction assembly; 81. Pressure roller; 82. Traction roller; 83. Third drive component;

[0039] 91. Second floating roller; 92. Second driving component; 93. Second connecting component; 94. Second guide post;

[0040] 200. Drying oven;

[0041] 300. Material strip. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0046] This embodiment provides a coating apparatus and a coating device, such as Figure 1 As shown, the coating equipment includes a coating device 100 and an oven 200, and is used to coat a slurry onto a strip 300. In this embodiment, the strip 300 can be an electrode sheet, and the coated slurry can be a conductive active material.

[0047] like Figure 1 and Figure 2As shown, the coating apparatus 100 includes a frame 10, a coating mechanism 20, an unwinding mechanism 30, and a winding mechanism 40. The coating mechanism 20, unwinding mechanism 30, and winding mechanism 40 are all mounted on the frame 10, and the oven 200 is located to the side of the coating apparatus 100. Specifically, the unwinding mechanism 30 includes an unwinding roller, which carries the strip roll and unwinds the strip 300 during rotation relative to the frame 10. The coating mechanism 20 applies a slurry to the strip 300; optionally, the coating mechanism 20 can be an existing doctor blade coating mechanism or a transfer coating mechanism. The winding mechanism 40 includes a winding roller, which carries the strip roll and winds the strip 300 during rotation relative to the frame 10. The overall conveying method of the material strip 300 in the coating equipment is as follows: the material strip 300 unwound by the unwinding mechanism 30 first enters the coating mechanism 20 for coating, the coated material strip enters the drying oven 200, the material strip 300 moves in a U-shaped path and is baked in the drying oven 200, and the material strip ending in the drying oven 200 returns to the coating device 100 and is wound up in the winding mechanism 40.

[0048] In this embodiment, the frame 10 includes a box 11 formed by multiple vertical supports and a support platform 12. The support platform 12 is horizontally positioned above the box 11. The coating mechanism 20 is mounted on the support platform 12. The unwinding mechanism 30 is mounted on at least one support and located inside the box 11. The winding mechanism 40 is mounted on at least one support and located inside the box 11. The unwinding mechanism 30 and the winding mechanism 40 are symmetrically arranged about the vertical plane. This arrangement not only allows the three mechanisms to overlap vertically, thus greatly reducing the footprint of the entire coating device 100 and avoiding the problem of insufficient factory space to accommodate the coating device 100, but also reduces the overall travel distance of the material strip 300 compared to the scheme of three independent mechanisms. This reduces the number of adjusting rollers, improves the ease of threading, and lowers the manufacturing cost of the device. Furthermore, the symmetrical arrangement of the unwinding mechanism 30 and the winding mechanism 40 about the vertical plane ensures uniform weight distribution and balanced stress distribution throughout the coating device, thereby guaranteeing the stability of the entire coating device. In this embodiment, the axis of the coating roller in the coating mechanism 20, the unwinding roller in the unwinding mechanism 30, the winding roller in the winding mechanism 40, and the aforementioned vertical plane are all arranged parallel to each other.

[0049] Optionally, such as Figure 2As shown, the direction parallel to the unwinding roller is defined as the front-to-back direction. The unwinding mechanism 30 and the winding mechanism 40 are arranged opposite each other to the left and right of the housing 11, respectively occupying the left and right spaces below the housing 11. The two ends of the unwinding mechanism 30 are supported on the supports on the front and rear sides of the housing 11, respectively, and the two ends of the winding mechanism 40 are also supported on the supports on the front and rear sides of the housing 11, respectively. This arrangement facilitates the operator in feeding the coated tape roll into the unwinding mechanism 30 and removing the coated tape roll from the winding mechanism 40. Of course, in some embodiments, the coating mechanism 20, unwinding mechanism 30, and winding mechanism 40 can also be arranged sequentially in a vertical direction. In some embodiments, the unwinding mechanism 30 and winding mechanism 40 are only arranged to the left and right, not symmetrically, and can be staggered in the front-to-back direction. In this embodiment, the oven 200 is located on the side of the coating device 100 where the winding mechanism 40 is located. This arrangement makes it easier for the material strip 300 baked in the oven 200 to reach the winding mechanism 40, thereby reducing the overall length of the material strip.

[0050] like Figure 2 As shown, the coating apparatus 100 also includes a splicing platform 50, which is disposed inside the housing 11 and located vertically between the coating mechanism 20 and the unwinding mechanism 30. That is, after the material strip 300 extends from the unwinding mechanism 30, it first passes through the splicing platform 50 before reaching the coating mechanism 20. The operator performs the splicing operation (i.e., splicing operation) on the splicing platform 50 to connect the end of the previous material strip roll to the beginning of the next material strip roll.

[0051] In this embodiment, the housing 11 is provided with a window corresponding to the tape-receiving platform 50, and the window is configured to expose the tape-receiving platform 50. Therefore, the operator can perform tape-receiving operations on the tape-receiving platform 50 through this window without having to remove the entire outer housing, thus improving the convenience of tape-receiving. It is understood that in some embodiments, a shielding door can also be installed at the window. When tape-receiving operations are not required, the shielding door can be used to cover the window to prevent external impurities from entering the housing 11.

[0052] like Figure 2 As shown, the conveyor belt receiving platform 50 forms an angle with the vertical plane, with the angle ranging from 30° to 60°. It should be noted that the angle between the conveyor belt receiving platform 50 and the vertical plane specifically refers to the angle between the surface of the conveyor belt receiving platform 50 through which the conveyor belt 300 passes and the vertical plane. The inclined setting of the conveyor belt receiving platform 50 further improves the ease of operation for the operator when receiving the conveyor belt. Optionally, the aforementioned angle can be 30°, 40°, 45°, 50°, or 60°, and no specific limitation is made here.

[0053] like Figure 2As shown, the coating apparatus 100 also includes two auxiliary rollers 61, which are respectively disposed at both ends of the receiving platform 50 along the belt feeding direction. After the surfaces of the two auxiliary rollers 61 contact the material belt 300, they are coplanar with the plane through which the material belt 300 passes on the receiving platform 50. This ensures the flatness of the material belt 300 on the receiving platform 50 while preventing interference between the material belt 300 and the receiving platform 50.

[0054] like Figure 2 As shown, a plurality of guide rollers 62 are also provided between the unwinding mechanism 30 and the receiving platform 50. These guide rollers 62 are used to adjust the direction and tension of the material strip 300. In this embodiment, two guide rollers 62 are provided between the unwinding mechanism 30 and the receiving platform 50. In other embodiments, the number and arrangement of the guide rollers 62 between the unwinding mechanism and the receiving platform 50 can be flexibly adjusted according to requirements.

[0055] like Figure 2 As shown, a first floating roller 71 is provided between the receiving platform 50 and the coating mechanism 20. The first floating roller 71 is wound around the feed belt 300, and the first floating roller 71 can float up and down to adjust the tension of the feed belt 300. Figure 2 As shown, the first floating roller 71 is rotatably mounted on the first connecting member 73, and the first connecting member 73 is slidably engaged with the first guide post 74 extending vertically on the frame 10, thereby enabling the first floating roller 71 to float up and down.

[0056] In some embodiments, the coating apparatus 100 further includes a first driving member 72, the output end of which is connected to a first connecting member 73. The first driving member 72 can drive the first connecting member 73 to slide along the first guide post 74, that is, the first driving member 72 actively drives the first floating roller 71 to float up and down, thereby changing the length of the winding path of the material strip 300, so as to keep the tension of the material strip 300 within an appropriate range. Optionally, the first driving member 72 can be a hydraulic cylinder, an electric cylinder, or a pneumatic cylinder, etc. In some embodiments (not shown), the coating apparatus 100 does not have a first driving member 72. The material strip 300 passes under the first floating roller 71, and the tension of the material strip 300 is balanced by the gravity of the first floating roller 71 and the first connecting member 73. When the tension of the material strip 300 changes, the positions of the first floating roller 71 and the first connecting member 73 passively float up and down to change the length of the winding path of the material strip 300, thereby keeping the tension of the material strip 300 within an appropriate range.

[0057] Furthermore, it is understood that those skilled in the art can provide a guide roller 62 between the first floating roller 71 and the coating mechanism 20 as needed to meet different orientation and tension requirements.

[0058] like Figure 2As shown, a traction assembly 80 is provided upstream of the winding mechanism 40 along the feeding direction of the feed strip 300. The traction assembly 80 includes a pressure roller 81 and a traction roller 82, which form a pair of rollers through which the feed strip 300 passes. The traction assembly 80 can provide traction force to the feed strip 300. The traction force provided by the traction assembly 80 can change the tension of the feed strip 300 before and after the traction assembly 80, thereby meeting the different tension requirements of the downstream winding mechanism 40 after the upstream oven 200. In addition, compared with other structures to change the tension, the above-mentioned traction assembly 80 has a compact structure, which is conducive to further improving the structural compactness of the coating apparatus 100.

[0059] like Figure 2 As shown, the distance between the pressure roller 81 and the traction roller 82 is adjustable, allowing the traction force of the traction assembly 80 on the material belt 300 to be adjusted. This enables more flexible control of the tension of the material belt 300 at the front and rear ends of the traction assembly 80, meeting different usage requirements. Specifically, in this embodiment, the traction assembly 80 also includes a third driving component 83. The third driving component 83 can drive the pressure roller 81 closer to or further away from the traction roller 82, thereby adjusting the distance between the pressure roller 81 and the traction roller 82, and thus adjusting the tension of the material belt 300 before and after the traction assembly 80. Optionally, the third driving component 83 can be a cylinder, electric cylinder, hydraulic cylinder, or other components, without specific limitations.

[0060] like Figure 2 As shown, along the running direction of the feed belt 300, a second floating roller 91 is provided upstream of the traction assembly 80. The second floating roller 91 is configured to be wound around the feed belt 300, and the second floating roller 91 can float up and down to adjust the tension of the feed belt 300. Figure 2 As shown, the second floating roller 91 is rotatably mounted on the second connecting member 93, and the second connecting member 93 is slidably engaged with the second guide post 94 extending vertically on the frame 10, thereby enabling the second floating roller 91 to float up and down.

[0061] In some embodiments, the coating apparatus 100 further includes a second drive member 92. The output end of the second drive member 92 is connected to the second connector 93. The second drive member 92 can drive the second connector 93 to slide along the second guide post 94. That is, the second drive member 92 actively drives the second float roller 91 to float up and down, thereby changing the length of the winding path of the material strip 300, so that the tension of the material strip 300 is maintained within an appropriate range. Optionally, the second drive member 92 can be a hydraulic cylinder, an electric cylinder, or a pneumatic cylinder, etc. In some embodiments (not shown), the coating apparatus 100 does not have a second drive member 92. The material strip 300 passes under the second float roller 91. The tension of the material strip 300 is balanced by the gravity of the second float roller 91 and the second connector 93. When the tension of the material strip 300 changes, the positions of the second float roller 91 and the second connector 93 passively float up and down to change the length of the winding path of the material strip 300, thereby maintaining the tension of the material strip 300 within an appropriate range.

[0062] like Figure 2 As shown, a guide roller 62 is provided between the winding mechanism 40 and the traction assembly 80. The guide roller 62 is used to adjust the direction and tension of the material belt 300. In this embodiment, two guide rollers 62 are provided between the traction assembly 80 and the winding mechanism 40. In other embodiments, the number of guide rollers 62 between the traction assembly 80 and the winding mechanism 40 can be flexibly set according to requirements. It is understood that those skilled in the art can provide guide rollers 62 between the drying oven 200 and the second floating roller 91, between the second floating roller 91 and the traction assembly 80, etc., to meet different direction and tension requirements.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Coating apparatus, characterized in that The coating device comprises: a rack (10) comprising a box (11) surrounded by vertical supports and a carrying platform (12) horizontally arranged above the box (11); a coating mechanism (20) arranged on the carrying platform (12); an unwinding mechanism (30) mounted on at least one of the supports and located in the box (11); and a winding mechanism (40) mounted on at least one of the supports and located in the box (11); wherein the unwinding mechanism (30) and the winding mechanism (40) are symmetrically arranged about a vertical plane.

2. The coating apparatus of claim 1, wherein The coating device further comprises a receiving platform (50) arranged in the box (11) and located between the coating mechanism (20) and the unwinding mechanism (30) in the vertical direction, and the box (11) is provided with a window corresponding to the receiving platform (50), and the window is configured to expose the receiving platform (50).

3. The coating apparatus of claim 1, wherein The coating device further comprises a receiving platform (50) arranged between the coating mechanism (20) and the unwinding mechanism (30), and the receiving platform (50) forms an angle with the vertical plane, and the angle is 30°-60°.

4. The coating apparatus according to claim 2 or 3, characterized in that The coating device further comprises two auxiliary rollers (61), and the two auxiliary rollers (61) are respectively arranged at the two ends of the receiving platform (50) along the belt running direction, and the two auxiliary rollers (61) are connected to the surface of the material belt and coplanar with the plane for the material belt to pass through.

5. The coating apparatus according to claim 2 or 3, wherein A first floating roller (71) is arranged between the receiving platform (50) and the coating mechanism (20), the first floating roller (71) is arranged around the material belt, and the first floating roller (71) can float up and down to adjust the tension of the material belt; and / or A passing roller (62) is arranged between the receiving platform (50) and the unwinding mechanism (30).

6. The coating apparatus of claim 1, wherein A traction assembly (80) is arranged upstream of the winding mechanism (40) along the belt running direction, the traction assembly (80) comprises a pressure roller (81) and a traction roller (82), the pressure roller (81) and the traction roller (82) form a pair of rollers for the material belt to pass through, and the traction assembly (80) can provide a traction force to the material belt.

7. The coating apparatus of claim 6, wherein The distance between the pressure roller (81) and the traction roller (82) is adjustable, so that the traction force of the traction assembly (80) to the material belt is adjustable.

8. The coating apparatus of claim 6, wherein A second floating roller (91) is arranged upstream of the traction assembly (80) along the belt running direction, the second floating roller (91) is configured to be arranged around the material belt, and the second floating roller (91) can float up and down to adjust the tension of the material belt.

9. The coating apparatus of claim 6, wherein A passing roller (62) is arranged between the winding mechanism (40) and the traction assembly (80).

10. Coating apparatus, characterized in that The coating device comprises an oven (200) and the coating device of any one of claims 1-9, and the material belt unwound by the unwinding mechanism (30) is sequentially arranged around the coating mechanism (20), the oven (200), and wound by the winding mechanism (40).

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