Integrated seal bar and solution circulation system for slot die coater

Abstract

The utility model discloses an integrated type sealing batten and solution circulation system of slit coater relates to coating equipment technical field, wherein, the integrated type sealing batten and solution circulation system of slit coater includes support platform and sealing assembly, and sealing assembly includes sealing strip, and sealing strip is located in support platform, and sealing strip is set up and is limited to groove, and the adjacent two side walls between limit groove form the angle, and limit groove is configured as and the interference fit of coating cutter head. The above -mentioned setting mode not only has promoted the adaptation of sealing strip and cutter head and has further enhanced the positioning stability, and the assembly mode of interference fit is convenient for the disassembly maintenance of cutter head, and the use convenience of equipment is promoted.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, and in particular to an integrated sealing strip and solution circulation system for a slot coating machine. Background Technology

[0002] Slit coating is a high-precision coating process widely used in lithium-ion batteries, optoelectronic displays, and electronic manufacturing. This technology involves extruding a coating solution under pressure through a slit die, uniformly coating the substrate surface.

[0003] However, the integrated sealing strip and solution circulation system of existing slot coating machines are prone to paint leakage from the assembly gap between the coating head and the support table. This not only wastes paint but also contaminates the equipment and products, increasing subsequent cleaning costs. Utility Model Content

[0004] The main purpose of this invention is to propose an integrated sealing strip and solution circulation system for a slot coating machine, aiming to solve the technical problem of poor sealing effect of the integrated sealing strip and solution circulation system for slot coating machines in related technologies.

[0005] To achieve the above objectives, the present invention proposes an integrated sealing strip and solution circulation system for a slot coating machine, comprising: Support platform; A sealing assembly, comprising a sealing strip disposed on the support platform, the sealing strip having a limiting groove, the limiting groove having an included angle between adjacent side walls, the limiting groove being configured to have an interference fit with a coating blade.

[0006] In one embodiment, the bottom wall of the limiting groove is provided with a through hole, and the sealing assembly further includes a first connecting pipe, one end of which is connected to the through hole, and the first connecting pipe is used for solution recovery.

[0007] In one embodiment, the sealing strip includes a first layer, a second layer, and a third layer, which are stacked sequentially. The first layer is configured to abut against the coating blade, and the third layer is configured to abut against the support platform. The first layer is made of carbon fiber reinforced polytetrafluoroethylene, the second layer is made of a stainless steel skeleton, and the third layer is made of a solvent-resistant silicone buffer layer.

[0008] In one embodiment, the sealing strip includes a first sealing section and a second sealing section, which are located on opposite sides of the support platform. The first sealing section is rectangular, and the second sealing section has the limiting groove.

[0009] In one embodiment, the integrated sealing strip and solution circulation system of the slot coater further includes a filter assembly and a recovery assembly. The sealing assembly includes a first connecting pipe, one end of the filter assembly is connected to the first connecting pipe, and the other end of the filter assembly is configured to connect to the recovery assembly.

[0010] In one embodiment, the filtration assembly includes a filter element and a second connecting pipe, the filter element being connected to the first connecting pipe, and the second connecting pipe connecting the filter element to the recycling assembly.

[0011] In one embodiment, the integrated sealing strip and solution circulation system of the slot coating machine further includes a recovery component, a filtration component, and a coating injection component. The recovery component includes an ultrasonic heating element, a storage bottle, and a first drive pump. The ultrasonic heating element has a receiving groove, and the storage bottle is housed in the receiving groove. The filtration component includes a second connecting pipe, the first drive pump is connected to the second connecting pipe, and the two ends of the storage bottle are respectively connected to the first drive pump and the coating injection component.

[0012] In one embodiment, the recovery assembly further includes a second drive pump located between the storage bottle and the coating injection assembly, with its two ends connected to the storage bottle and the coating injection assembly, respectively.

[0013] In one embodiment, the filter element is made of one of the following materials: polyethersulfone, organic nylon, polytetrafluoroethylene, polyvinylidene fluoride, mixed cellulose, and polypropylene.

[0014] In one embodiment, the pore size of the filter element is one of 0.22 μm, 0.45 μm, and 0.8 μm.

[0015] The integrated sealing strip and solution circulation system of the slot coating machine provided by this utility model solves the problems of unstable positioning of the coating head, poor sealing effect, and insufficient coating accuracy during the coating process by adopting a sealing assembly including a support platform and a sealing strip with an angled limiting groove. Specifically, the support platform provides a stable mounting base for the entire sealing assembly and coating head, ensuring the consistency of the assembly reference of each component; the core component of the sealing assembly is the sealing strip, which is fixedly mounted on the support platform. The adjacent side walls of the limiting groove formed by the sealing strip form an angled structure, which not only provides guidance for the assembly of the coating head, guiding the coating head to quickly align with the assembly position, but also provides lateral constraint through the angle. Combined with the interference fit design of the limiting groove and the coating head, the coating head is tightly fitted with the two opposite groove walls after being embedded in the limiting groove. The angled structure further enhances the tightness of the fit and prevents loosening. Meanwhile, the sealing strip itself possesses excellent sealing material properties. Its soft and elastic material attributes allow it to not only tightly adhere to the coating blade and the tank wall, but also further fill any potential micro-gaps, forming a double-seal protection: on the one hand, the interference fit between the limiting groove and the coating blade seals structural gaps; on the other hand, the sealing strip's own sealing performance prevents material leakage. These two working together effectively block the path of paint leakage between the coating blade and the support platform. This design not only improves the fit between the sealing strip and the blade, further enhancing positioning stability, but also facilitates blade disassembly and maintenance through the interference fit, improving the ease of use of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the integrated sealing strip and solution circulation system of the slot coating machine provided by this utility model; Figure 2 Another structural schematic diagram of the integrated sealing strip and solution circulation system of the slot coating machine provided by this utility model.

[0018] Explanation of icon numbers: 1000. Integrated sealing strip and solution circulation system for a slot coating machine; 1. Support platform; 2. Sealing assembly; 21. Sealing strip; 211. Limiting groove; 212. First sealing section; 213. Second sealing section; 22. First connecting pipe; 3. Filter assembly; 31. Filter element; 32. Second connecting pipe; 4. Recovery assembly; 41. Ultrasonic heating element; 42. Storage bottle; 43. First drive pump; 44. Second drive pump.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes an integrated sealing strip and solution circulation system 1000 for a slot coating machine.

[0024] Please see Figure 1 and Figure 2In one embodiment of the present invention, the integrated sealing strip and solution circulation system 1000 of the slot coating machine includes a support platform 1 and a sealing component 2. The sealing component 2 includes a sealing strip 21, which is disposed on the support platform 1. The sealing strip 21 has a limiting groove 211, and the adjacent side walls of the limiting groove 211 form an included angle. The limiting groove 211 is configured to have an interference fit with the coating blade.

[0025] In this embodiment, it should be noted that the support platform 1 is used to support the sealing assembly 2 and the coating blade, providing a stable installation and working reference for the entire coating operation. The coating blade is positioned above the support platform 1 and is not shown in the figure. The sealing assembly 2 is used to seal the coating blade during shutdown. The sealing strip 21 is used to seal the coating blade, and it can be installed on the support platform 1 by means of bonding, embedding, or fastener connection (the types of fasteners here include, but are not limited to, screws, bolts, etc.), which will not be elaborated further here. The material of the sealing strip 21 includes, but is not limited to, rubber, silicone, etc., and is not limited here. The limiting groove 211 is used to provide precise installation and movement guidance for the coating blade. It is understood that the sealing component 2 provided in this application corresponds to two different operating stages. When the integrated sealing strip and solution circulation system 1000 of the slot coater is in the sealing stage, the sealing strip 21 in the sealing component 2 seals the coating blade head. When the coating blade head presses against the sealing strip 21, it forms a tight fit, achieving a physical seal. When the integrated sealing strip and solution circulation system 1000 of the slot coater is in the solution recovery stage, the coating blade head is confined within the limiting groove 211, forming an interference fit with the two side walls of the limiting groove 211. The distance between the two side walls of the limiting groove 211 is slightly smaller than the outer dimensions of the corresponding mating part of the coating blade head. When the coating blade head is assembled into the limiting groove 211, a certain compressive force is generated between the two. By utilizing the elastic deformation of the sealing strip 21 material itself, the tightness of the fit between the two can be further improved.

[0026] The integrated sealing strip and solution circulation system 1000 of the slot coating machine provided by this utility model can solve the problems of unstable positioning of the coating blade, poor sealing effect and insufficient coating accuracy during the coating process by adopting a sealing component 2 including a support platform 1 and a sealing strip 21 with a limiting groove 211. Specifically, the support platform 1 provides a stable mounting base for the entire sealing assembly 2 and the coating blade, ensuring the consistency of the assembly reference of each component. The core component of the sealing assembly 2 is the sealing strip 21, which is fixedly mounted on the support platform 1. The limiting groove 211 of the sealing strip forms an angle structure with the adjacent side walls. This structure can not only provide guidance for the assembly of the coating blade, guiding the coating blade to quickly align with the assembly position, but also, through the lateral constraint formed by the angle, combined with the interference fit design between the limiting groove 211 and the coating blade, ensure that after the coating blade is embedded in the limiting groove 211, it forms a tight fit with the two opposite groove walls of the limiting groove 211. The angle structure further enhances the tightness of the fit and prevents the fit from becoming loose. Meanwhile, the sealing strip 21 possesses excellent sealing material properties. Its soft and elastic material allows it to not only tightly adhere to the coating blade head and the tank wall, but also further fill any potential micro-gaps, forming a double-seal protection: on the one hand, the interference fit between the limiting groove 211 and the coating blade head achieves structural gap sealing; on the other hand, the sealing performance of the sealing strip 21 itself achieves material-level leakage prevention. The two work together to fundamentally block the path of paint leakage between the coating blade head and the support table 1. This configuration not only improves the fit between the sealing strip 21 and the blade head, further enhancing positioning stability, but also facilitates the disassembly and maintenance of the blade head through the interference fit assembly method, improving the ease of use of the equipment.

[0027] In one embodiment of the present invention, the bottom wall of the limiting groove 211 is provided with a through hole, and the sealing component 2 further includes a first connecting pipe 22, one end of which is connected to the through hole, and the first connecting pipe 22 is used for solution recovery.

[0028] In this embodiment, combined with Figure 2To facilitate solution recovery on the coating blade, the bottom wall of the limiting groove 211 is provided with through holes. The number of through holes is not limited and can be set according to specific needs. The shape of the through holes can be circular, square, etc., and is not limited here. It is understood that the bottom wall of the limiting groove 211 has multiple through holes spaced apart, which connect to the first connecting pipe 22. The first connecting pipe 22 connects to other components, thereby achieving solution recovery. The first connecting pipe 22 is a component used to guide and recover the solution on the coating blade. It is tubular and its material includes, but is not limited to, rigid plastic, stainless steel, etc., and is not limited here. Both ends of the first connecting pipe 22 are open structures. One end is sealed to the through hole, and the connection method can be interference fit, adhesive fixing, or threaded connection, etc. The other end connects to the integrated sealing strip of the slot coater and other structures of the solution circulation system 1000.

[0029] In one embodiment of the present invention, the sealing strip 21 includes a first layer, a second layer and a third layer, which are stacked sequentially. The first layer is configured to abut against the coating blade head, and the third layer is configured to abut against the support platform 1. The material of the first layer is carbon fiber reinforced polytetrafluoroethylene, the material of the second layer is a stainless steel skeleton, and the material of the third layer is a solvent-resistant silicone buffer layer.

[0030] In this embodiment, it should be noted that the sealing strip 21 adopts a sandwich composite structure. The first layer, which is in direct contact with the coating blade, is made of carbon fiber reinforced polytetrafluoroethylene with a thickness of 1-3 mm. The second layer, the middle layer, is made of stainless steel with a thickness of 0.1-1 mm. It effectively resists the stress generated by the coating blade extrusion, prevents deformation of the limiting groove 211, and ensures the stability of the through hole position. The third layer, the bottom layer, is made of solvent-resistant silicone buffer layer. It fits tightly with the support platform 1 and fills the tiny unevenness on the surface of the support platform 1, reducing the seepage of solution from the contact surface between the sealing strip 21 and the support platform 1. It can be understood that the three-layer structure can be integrally formed using a molding process.

[0031] In one embodiment of the present invention, the sealing strip 21 includes a first sealing section 212 and a second sealing section 213. The first sealing section 212 and the second sealing section 213 are located on opposite sides of the support platform 1. The first sealing section 212 is rectangular, and the second sealing section 213 has a limiting groove 211.

[0032] In this embodiment, combined with Figure 1To further adapt to the two different operating states of the integrated sealing strip and solution circulation system 1000 of the slot coater, the sealing strip 21 includes a first sealing section 212 and a second sealing section 213. The first sealing section 212 has a rectangular cross-section and is a continuous, uninterrupted strip structure. The second sealing section 213 has a V-shaped cross-section and a limiting groove 211. The two sealing sections are fixed to opposite sides of the support platform 1, forming an enclosed layout of one-sided limiting seal and one-sided side seal. When the integrated sealing strip and solution circulation system 1000 of the slot coater is in the sealing stage, the first sealing section 212 achieves a tight fit with the coating blade head, realizing a physical sealing effect. When the integrated sealing strip and solution circulation system 1000 of the slot coater is in the solution recovery or circulation stage, the solution on the coating blade head is recovered through the limiting groove 211 opened in the second sealing section 213 and the through hole opened in the bottom wall of the limiting groove 211.

[0033] In one embodiment of the present invention, the integrated sealing strip and solution circulation system 1000 of the slot coating machine further includes a filter assembly 3 and a recovery assembly 4. The sealing assembly 2 includes a first connecting pipe 22, one end of the filter assembly 3 is connected to the first connecting pipe 22, and the other end of the filter assembly 3 is configured to connect to the recovery assembly 4.

[0034] In this embodiment, combined with Figure 1 To further facilitate recycling, the integrated sealing strip and solution circulation system 1000 of the slot coater also includes a filter assembly 3 and a recovery assembly 4. The filter assembly 3 is used to purify the recovered solution and remove impurities mixed in it, ensuring that the solution can be recycled or discharged in compliance with regulations. The recovery assembly 4 is used to collect and store the solution purified by the filter assembly 3. It is understood that the filter assembly 3 includes a shell and an internal filter element 31. The shell has interfaces at both ends, which are used to achieve sealed connections with the first connecting pipe 22 and the recovery assembly 4, respectively. The type of the internal filter element 31 includes, but is not limited to, ceramic filter elements, filter elements, or metal filter screens, etc., and is not limited here. Furthermore, to prevent clogging of the internal filter element 31, a temporary flow channel can be provided inside the shell to avoid clogging of the filter assembly 3 during normal operation. The recovery assembly 4 includes a liquid storage component with a hollow cavity inside, used to contain the recovered solution. One side of the liquid storage component also has an interface for connecting to the filter assembly 3. Sealing rings, gaskets, and other sealing components can also be provided at the interface to ensure no solution leakage at the connection. The connection between the filter assembly 3 and the first connecting pipe 22 includes, but is not limited to, compression fitting connection, threaded sealing connection, flange connection, etc., and is not limited here.

[0035] In one embodiment of the present invention, the filter assembly 3 includes a filter element 31 and a second connecting pipe 32. The filter element 31 is connected to the first connecting pipe 22, and the second connecting pipe 32 connects the filter element 31 and the recovery assembly 4.

[0036] In this embodiment, the filter element 31 is used to filter the recovered solution. The filter element 31 is actually a combination of a filter cartridge and a housing. The material of the filter cartridge can be one of polyethersulfone, organic nylon, polytetrafluoroethylene, polyvinylidene fluoride, mixed cellulose, polypropylene, or nylon membrane; no specific limitation is made here. The second connecting pipe 32 is used to achieve leak-free transport before and after filtration. The material of the second connecting pipe 32 can be a stainless steel corrugated pipe, a polytetrafluoroethylene rigid pipe, etc. The connection method between the filter element 31 and the first connecting pipe 22 includes, but is not limited to, socket interference fit, threaded sealing connection, or snap-fit ​​sealing connection, and can be set according to specific needs.

[0037] In one embodiment of this utility model, the integrated sealing strip and solution circulation system 1000 of the slot coating machine further includes a recovery component 4, a filter component 3, and a coating injection component. The recovery component 4 includes an ultrasonic heating element 41, a storage bottle 42, and a first drive pump 43. The ultrasonic heating element 41 has a receiving groove, and the storage bottle 42 is accommodated in the receiving groove. The filter component 3 includes a second connecting pipe 32, and the first drive pump 43 is connected to the second connecting pipe 32. The two ends of the storage bottle 42 are respectively connected to the first drive pump 43 and the coating injection component.

[0038] In this embodiment, combined with Figure 1 The ultrasonic heating element 41 is used to achieve solution heating and homogenization. It heats the recovered solution in the storage bottle 42 through a combination of ultrasonic vibration and heat conduction, while simultaneously preventing solute precipitation and improving solution homogeneity. The storage bottle 42 is used to contain and temporarily store the recovered solution. It is a three-hole screw-cap mobile phase solvent bottle, and its color is either transparent or brown. Its volume can be 100ml, 250ml, 500ml, 1000ml, or 2000ml. The first drive pump 43 is used to improve solution recovery efficiency. The type of the first drive pump 43 includes, but is not limited to, diaphragm pumps and gear pumps; here, a peristaltic pump is preferred. The peristaltic pump can be a speed-regulating peristaltic pump, a flow-type peristaltic pump, or a distribution-type peristaltic pump. It is understood that the second connecting pipe 32 can be connected to the filter element 31 and the first drive pump 43 via threaded joints, compression fittings, etc.

[0039] In one embodiment of the present invention, the recycling component 4 further includes a second drive pump 44, which is located between the storage bottle 42 and the coating and injection component, and the two ends of the second drive pump 44 are respectively connected to the storage bottle 42 and the coating and injection component.

[0040] In this embodiment, the second drive pump 44 is a power component used to transfer the heated and homogenized solution to the coating and dispensing assembly. Its type can be a diaphragm pump, gear pump, etc., but a peristaltic pump is preferred here. The connection between the second drive pump 44 and the storage bottle 42 and the coating and dispensing assembly can be a flange seal connection, a compression fitting quick-connect seal connection, etc., and is not limited here.

[0041] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An integrated sealing strip and solution circulation system for a slot coating machine, characterized in that, include: Support platform; A sealing assembly, comprising a sealing strip disposed on the support platform, the sealing strip having a limiting groove, the limiting groove having an included angle between adjacent side walls, the limiting groove being configured to have an interference fit with a coating blade.

2. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 1, characterized in that, The bottom wall of the limiting groove is provided with a through hole, and the sealing assembly also includes a first connecting pipe, one end of which is connected to the through hole. The first connecting pipe is used for solution recovery.

3. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 1, characterized in that, The sealing strip includes a first layer, a second layer, and a third layer, which are stacked sequentially. The first layer is configured to abut against the coating blade, and the third layer is configured to abut against the support platform. The first layer is made of carbon fiber reinforced polytetrafluoroethylene, the second layer is made of a stainless steel skeleton, and the third layer is made of a solvent-resistant silicone buffer layer.

4. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 1, characterized in that, The sealing strip includes a first sealing section and a second sealing section, which are located on opposite sides of the support platform. The first sealing section is rectangular, and the second sealing section has the limiting groove.

5. The integrated sealing strip and solution circulation system of the slot coating machine as described in any one of claims 1 to 4, characterized in that, The integrated sealing strip and solution circulation system of the slot coating machine also includes a filter assembly and a recovery assembly. The sealing assembly includes a first connecting pipe, one end of the filter assembly is connected to the first connecting pipe, and the other end of the filter assembly is configured to connect to the recovery assembly.

6. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 5, characterized in that, The filtration assembly includes a filter element and a second connecting pipe. The filter element is connected to the first connecting pipe, and the second connecting pipe connects the filter element to the recycling assembly.

7. The integrated sealing strip and solution circulation system of the slot coater as described in any one of claims 1 to 4, characterized in that, The integrated sealing strip and solution circulation system of the slot coating machine also includes a recovery component, a filtration component, and a coating injection component. The recovery component includes an ultrasonic heating element, a storage bottle, and a first drive pump. The ultrasonic heating element has a receiving groove, and the storage bottle is housed in the receiving groove. The filtration component includes a second connecting pipe, the first drive pump is connected to the second connecting pipe, and the two ends of the storage bottle are respectively connected to the first drive pump and the coating injection component.

8. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 7, characterized in that, The recycling assembly also includes a second drive pump, which is located between the storage bottle and the coating and injection assembly, with its two ends connected to the storage bottle and the coating and injection assembly, respectively.

9. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 6, characterized in that, The filter element is made of one of the following materials: polyethersulfone, organic nylon, polytetrafluoroethylene, polyvinylidene fluoride, mixed cellulose, or polypropylene.

10. The integrated sealing strip and solution circulation system of the slot coating machine as described in claim 6, characterized in that, The filter element has a pore size of one of 0.22μm, 0.45μm, or 0.8μm.

Images