Feeding device for film coating processing

Abstract

The invention discloses a feeding device for film coating processing, which relates to the technical field of film coating equipment, and comprises a feeding control assembly which is mounted at the side end of a side support framework and is in sliding connection with the side end of a top transverse electromagnetic suspension guide rail of the support framework, so that high-precision compensation on the edge thickness is effectively realized on the whole, and the thickness of the edge is reduced; the compensation precision can be within + / -5 [mu] m, different edge thickness distribution and variation trends can be adapted in special film coating operation, the accuracy and stability of edge compensation are ensured by monitoring and adjusting coating liquid parameters in real time, and the production efficiency of the lithium battery diaphragm is improved in the production process of the lithium battery diaphragm. The accurate edge thickness compensation can ensure that the ion conduction performance of the edge of the diaphragm is uniform and consistent, the charging and discharging efficiency and safety of the battery are improved, the adhesion effect of the coating liquid on the edge is further optimized, uniform adhesion and stable flowing of the coating liquid on the edge are ensured, the edge effect is effectively reduced, and the edge coating quality and appearance effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of thin film coating equipment, in particular to a feeding device for thin film coating processing. Background Art

[0002] Thin film coating is a technical process widely used in the manufacturing industry, especially in multi-layer thin film coating. Multi-layer thin film coating can give the final product complex and precise performance characteristics by continuously coating materials with different components and functions on the substrate. In this process, the feeding device plays a vital role. It is not only responsible for accurately and stably feeding the raw materials into the coating system, but also ensuring the uniformity, continuity and high purity of the raw materials during the coating process, thereby ensuring the quality and performance of the coating layer.

[0003] At present, in the feeding operation process for thin film coating processing, due to factors such as liquid surface tension and capillary action, coating liquid is prone to accumulation or coating thickness becomes thinner in the edge area of ​​the film, resulting in edge effect, which causes the performance of the edge of the film to be inconsistent with that of the central area, reducing the overall quality of the product. When operating on lithium battery separators, uneven coating at the edges may affect the ion conductivity and mechanical strength of the separator, reducing the safety and service life of the battery. Therefore, it is necessary to propose a feeding device for thin film coating processing. Summary of the invention

[0004] The object of the present invention is to provide a feeding device for thin film coating processing to solve the problem proposed in the above background technology that during the feeding operation of thin film coating processing, due to factors such as liquid surface tension and capillary action, coating liquid is easily accumulated or the coating thickness becomes thinner in the edge area of ​​the film, resulting in an edge effect, causing the performance of the edge of the film to be inconsistent with that of the central area, thereby reducing the overall quality of the product. When operating on lithium battery diaphragms, uneven coating at the edges may affect the ion conductivity and mechanical strength of the diaphragm, thereby reducing the safety and service life of the battery.

[0005] To achieve the above object, the present invention provides the following technical solution: a feeding device for thin film coating processing, comprising:

[0006] A feeding control assembly is installed at the side end of the side support structure and forms a sliding connection with the side end of the top transverse electromagnetic suspension rail of the support structure. It is used to accurately control the flow rate of the coating liquid according to the coating process requirements during the film coating operation, so that the uniformity of the overall coating thickness can be guaranteed during the special coating operation;

[0007] The edge adaptive compensation component is installed on the frame of the side support structure. It is used to ensure the uniformity of the ion conduction performance and mechanical strength of the membrane edge when performing special coating operations such as lithium battery membranes, in cooperation with the edge thickness sensor installed on the surface of the side support structure, in the production of products with high edge quality requirements;

[0008] The feed control components include:

[0009] A screw pump, an electromagnetic heating sleeve, a coating liquid sterilization box and an appropriate amount dispenser, wherein the electromagnetic heating sleeve is installed on the outer peripheral side of the stirring screw in the screw pump, the side end of the electromagnetic heating sleeve is connected to the side wall of the coating liquid sterilization box through a pumping valve port, and the appropriate amount dispenser is installed on the side end of the coating liquid sterilization box;

[0010] The edge adaptive compensation components include:

[0011] A longitudinal electromagnetic suspension guide rail, a sliding connection position frame and a high-precision pressure control valve, wherein the longitudinal electromagnetic suspension guide rail is fastened to the surface of the side support structure, and the sliding connection position frame is located at the top end of the longitudinal electromagnetic suspension guide rail for sliding connection.

[0012] Preferably, a motor rotation box is installed on the side end of the sliding connection position frame, and an angle rotation detector is installed on the side end of the motor rotation box. The side end of the angle rotation detector is fastened with a first azimuth driving arm, and the side end of the first azimuth driving arm is rotationally connected to a second azimuth driving arm, and the bottom end of the second azimuth driving arm is connected to a coating liquid valve measuring nozzle.

[0013] Preferably, the side end of the coating liquid valve metering nozzle is connected to a micro-flow guide valve tube, the side end of the micro-flow guide valve tube is connected to a coating liquid viscosity regulator, the top of the coating liquid viscosity regulator is connected to a high-precision pressure control valve, and the bottom of the coating liquid valve metering nozzle is connected to a connecting control nozzle end.

[0014] Preferably, a fine-tuning edge contact plate is installed on the side wall of the connecting and regulating nozzle end, and two groups of micro-control drivers are symmetrically installed on the left and right sides of the internal cavity of the connecting and regulating nozzle end. An angle plug-in adjustment plate is installed on the side end of the micro-control driver, and the bottom end of the angle plug-in adjustment plate is fastened to the liquid spray head diameter adjustment plate.

[0015] Preferably, the top end of the appropriate amount distributor is connected to an appropriate amount coating liquid guide valve tube, and the side end of the appropriate amount coating liquid guide valve tube is connected to the side end of the high-precision pressure control valve.

[0016] Preferably, a classified micro-flow regulating plunger pump valve is installed on the side end of the coating liquid sterilization box, and the top of the side end of the classified micro-flow regulating plunger pump valve is connected to a classified duct, and the side sliding connection of the transverse electromagnetic suspension guide rail is connected to a positioning sliding seat, and the side end of the positioning sliding seat is installed with a hinge structure, and the side end of the hinge structure is fastened with a connection driving stepping push frame.

[0017] Preferably, the side end of the connection driving step push frame is fastened to a synchronous fixed frame plate, a microfluidic flow guide is installed on the surface of the synchronous fixed frame plate, the side end of the classification duct is connected to the microfluidic flow guide, and the top surface of the microfluidic flow guide is connected to a duct.

[0018] Preferably, the side end of the conduit is connected to an automatic coating liquid thickening guide, and a spray control valve is installed at the connecting end of the conduit and the automatic coating liquid thickening guide.

[0019] Preferably, the bottom end of the coating liquid automatic thickening guide is connected to a coating liquid regulating tube, the bottom surface of the microfluidic flow guide is connected to a coating liquid straight-through valve tube, and the bottom end of the coating liquid straight-through valve tube is connected to a switching valve tube.

[0020] Preferably, the side end of the coating liquid regulating tube is connected to the surface of the switching valve tube through an adaptive solenoid valve, and the bottom end of the switching valve tube is connected to the coating liquid head.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, the edge thickness sensor is used to monitor the thickness of the film edge (the film when the film machine is in operation) in real time in cooperation with the edge adaptive compensation component. When the edge thickness is detected to be uneven, the logic control processor controls the longitudinal electromagnetic suspension guide rail to drive the sliding connection position frame to move to the edge position that needs to be compensated, so that when the thickness on the left side of the edge is thinner, the sliding connection position frame moves to the left to the corresponding position, so that the coating liquid valve metering nozzle is aligned with the thinner area. According to the edge thickness, the logic control processor adjusts the opening of the pressure high-precision control valve to change the pressure of the coating liquid. When it is detected that the edge thickness is thin, the coating liquid pressure is increased to spray more coating liquid from the connected control nozzle end. When it is detected that the edge thickness is thicker, the pressure is reduced. At the same time, the viscosity of the coating liquid is adjusted by the coating liquid viscosity regulator to adapt to different compensation requirements. When the thickness needs to be increased quickly, the viscosity is appropriately reduced to make the coating liquid easier to flow and spread. Then the micro-flow guide valve tube accurately controls the flow of the coating liquid according to the instructions of the logic control processor to ensure that the amount of coating liquid sprayed meets the compensation requirements. Secondly, after adjusting the pressure, viscosity and flow, the coating liquid is transported to the coating liquid valve nozzle through the micro-flow guide valve tube, and then sprayed from the connected control nozzle to the edge of the film, so as to effectively achieve high-precision compensation of the edge thickness as a whole. The compensation accuracy can reach within ±5μm, and in special film coating operations, it can adapt to different edge thickness distributions and change trends. By real-time monitoring and adjustment of coating liquid parameters, the accuracy and stability of edge compensation are guaranteed. In the production of lithium battery diaphragms, accurate edge thickness compensation can ensure that the ion conductivity of the diaphragm edge is uniform and consistent, thereby improving the charging and discharging efficiency and safety of the battery.

[0023] 2. In the present invention, with the cooperation of the edge adaptive compensation component, during the spraying process, the angle rotation detector monitors the angle change of the first azimuth driving arm and the second azimuth driving arm in real time, and feeds back the data to the logic control processor, so that the logic control processor synchronously sends a new instruction to the motor rotation box according to the distribution of the edge thickness, so that the motor rotation box drives the first azimuth driving arm and the second azimuth driving arm to rotate, and adjusts the angle of the coating liquid valve nozzle, so that when it is necessary to form a specific thickness gradient effect on the edge, the coating liquid can be sprayed to the edge of the film in different directions and angles by accurately controlling the angle, and the edge shape visual inspection installed on the surface of the side support structure is With the cooperation of the measuring sensor, according to the uneven shape of the thickness of the edge, the micro-control driver drives the angle plug-in adjustment plate to move according to the instruction of the logic control processor, thereby adjusting the position of the nozzle diameter adjustment plate and changing the nozzle diameter connected to the control nozzle end, that is, when the spraying amount of the coating liquid needs to be increased, the nozzle diameter is enlarged, and when a small flow of coating liquid needs to be accurately controlled, the nozzle diameter is reduced. At the same time, the edge contact plate is fine-tuned according to the actual situation of the edge of the film, and the contact distance and angle with the edge of the film are fine-tuned within a certain range, so as to further optimize the adhesion effect of the coating liquid on the edge, ensure the uniform adhesion and stable flow of the coating liquid on the edge, effectively reduce the edge effect, and improve the quality and appearance of the edge coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the feeding device for thin film coating processing of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a feeding control component in a feeding device for thin film coating processing of the present invention;

[0026] Figure 3 The feeding device for thin film coating processing of the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0027] Figure 4 The feeding device for thin film coating processing of the present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0028] Figure 5 It is a schematic diagram of the structure of the edge adaptive compensation component in the feeding device for thin film coating processing of the present invention;

[0029] Figure 6 It is a partial structural schematic diagram of the edge adaptive compensation component in the feeding device for thin film coating processing of the present invention;

[0030] Figure 7 The feeding device for thin film coating processing of the present invention Figure 6 Enlarged structural diagram at C.

[0031] In the figure: 1. Side support structure; 2. Feed control assembly; 21. Screw pump; 22. Electromagnetic heating sleeve; 23. Coating liquid sterilization box; 24. Appropriate amount dispenser; 25. Classification micro-flow regulating plunger pump valve; 26. Positioning sliding seat; 27. Hinge structure; 28. Connecting drive stepping push frame; 29. ​​Synchronous fixed frame plate; 290. Classification catheter; 291. Microfluidic flow guide; 292. Coating liquid straight-through valve pipe; 293. Coating liquid regulating pipe; 294. Catheter; 295. Spray control valve; 296. Coating liquid automatic thickening guide; 297. Switching valve Tube; 298, coating head; 3, horizontal electromagnetic suspension guide rail; 4, edge adaptive compensation component; 41, longitudinal electromagnetic suspension guide rail; 42, sliding connection position frame; 43, high-precision pressure control valve; 44, coating liquid viscosity regulator; 45, motor rotation box; 46, angle rotation detector; 47, first position drive arm; 48, second position drive arm; 49, micro-flow guide valve tube; 490, coating liquid valve measurement nozzle; 491, connected control nozzle end; 492, fine-tuning edge contact plate; 493, micro-control driver; 494, angle plug-in adjustment plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the present invention, reference is made to Figure 1 - Figure 7 As shown: The feeding device for film coating processing includes:

[0034] The feeding control assembly 2 is installed at the side end of the side support structure 1 and forms a sliding connection with the side end of the top transverse electromagnetic suspension rail 3 of the support structure 1, and is used to accurately control the flow rate of the coating liquid according to the coating process requirements during the film coating operation, so that the uniformity of the overall coating thickness can be guaranteed during the special coating operation;

[0035] The edge adaptive compensation component 4 is installed on the frame of the side support structure 1. It is used to ensure the uniformity of the ion conduction performance and mechanical strength of the membrane edge in the production of products with high edge quality requirements when performing special coating operations such as lithium battery membranes, in cooperation with the edge thickness sensor installed on the surface of the side support structure 1.

[0036] Embodiment 1: In the present invention, according to Figure 1 and Figure 5 - Figure 7 As shown, the edge adaptive compensation component 4 includes:

[0037] The longitudinal electromagnetic suspension rail 41, the sliding connection position frame 42 and the high-precision pressure control valve 43, the longitudinal electromagnetic suspension rail 41 is fastened to the surface of the side support structure 1, and the sliding connection position frame 42 is located at the top end of the longitudinal electromagnetic suspension rail 41 for sliding connection.

[0038] A motor rotation box 45 is installed on the side end of the sliding connection position frame 42, and an angle rotation detector 46 is installed on the side end of the motor rotation box 45. The side end of the angle rotation detector 46 is fastened with a first orientation driving arm 47, and the side end of the first orientation driving arm 47 is rotationally connected to a second orientation driving arm 48. The bottom end of the second orientation driving arm 48 is connected to a coating liquid valve metering nozzle 490.

[0039] The side end of the coating liquid valve metering nozzle 490 is connected to a micro-flow guide valve tube 49, the side end of the micro-flow guide valve tube 49 is connected to a coating liquid viscosity regulator 44, the top of the coating liquid viscosity regulator 44 is connected to the high-precision pressure control valve 43, and the bottom of the coating liquid valve metering nozzle 490 is connected to a connecting control nozzle end 491.

[0040] A fine-tuning edge contact plate 492 is installed on the side wall of the connecting and regulating nozzle end 491, and two groups of micro-control drivers 493 are symmetrically installed on the left and right sides of the internal cavity of the connecting and regulating nozzle end 491. An angle plug-in adjustment plate 494 is installed on the side end of the micro-control driver 493, and the bottom end of the angle plug-in adjustment plate 494 is fastened to the liquid spray head diameter adjustment plate.

[0041] In a specific solution, when the film coating operation starts, the edge thickness sensor monitors the thickness of the film edge (the film when the film machine is operating) in real time, and transmits the thickness data to the logic control processor connected to the edge adaptive compensation component 4. The logic control processor determines whether the film edge thickness is uniform based on the received thickness data. When the edge thickness is detected to be uneven, the logic control processor controls the longitudinal electromagnetic suspension guide rail 41 to drive the sliding connection position frame 42 to move to the edge position that needs to be compensated, so that when the thickness on the left side of the edge is thinner, the sliding connection position frame 42 moves to the left to the corresponding position, so that the coating liquid valve metering nozzle 490 is aimed at the thinner area. According to the edge thickness, the logic control processor adjusts the opening of the high-precision pressure control valve 43. The coating liquid pressure is changed, and when the edge thickness is detected to be thin, the coating liquid pressure is increased to make more coating liquid sprayed from the connected regulating spray end 491, and when the edge thickness is detected to be thick, the pressure is reduced. At the same time, the viscosity of the coating liquid is adjusted by the coating liquid viscosity regulator 44 to adapt to different compensation requirements, so that when the thickness needs to be increased quickly, the viscosity is appropriately reduced to make the coating liquid easier to flow and spread. Then the micro-flow guide valve pipe 49 accurately controls the flow rate of the coating liquid according to the instruction of the logic control processor to ensure that the amount of coating liquid sprayed meets the compensation requirements. Secondly, after adjusting the pressure, viscosity and flow rate, the coating liquid is transported to the coating liquid valve nozzle 490 through the micro-flow guide valve pipe 49, and then sprayed from the connected regulating spray end 4 91 is sprayed to the edge of the film. During the spraying process, the angle rotation detector 46 monitors the angle changes of the first azimuth driving arm 47 and the second azimuth driving arm 48 in real time, and feeds back the data to the logic control processor, so that the logic control processor synchronously sends a new instruction to the motor rotation box 45 according to the distribution of the edge thickness, so that the motor rotation box 45 drives the first azimuth driving arm 47 and the second azimuth driving arm 48 to rotate, and adjusts the angle of the coating liquid valve metering nozzle 490, so that when it is necessary to form a specific thickness gradient effect on the edge, the coating liquid can be sprayed to the edge of the film in different directions and angles by accurately controlling the angle, and the edge shape visual detection sensor installed on the surface of the side support structure cooperates with the edge thickness distribution sensor according to the edge thickness distribution. The uneven thinness of the shape causes the micro-control driver 493 to drive the angle plug-in adjustment plate 494 to move according to the instruction of the logic control processor, thereby adjusting the position of the nozzle diameter adjustment plate and changing the nozzle diameter of the nozzle end 491. That is, when the spraying amount of the coating liquid needs to be increased, the nozzle diameter is enlarged, and when a small flow of the coating liquid needs to be accurately controlled, the nozzle diameter is reduced. At the same time, the edge contact plate 492 is fine-tuned according to the actual situation of the edge of the film. The contact distance and angle with the edge of the film are fine-tuned within a certain range, further optimizing the adhesion effect of the coating liquid on the edge, ensuring the uniform adhesion and stable flow of the coating liquid on the edge, effectively reducing the edge effect, improving the quality and appearance of the edge coating, and effectively realizing high-precision compensation for the edge thickness as a whole.The compensation accuracy can reach within ±5μm, and it can adapt to different edge thickness distributions and change trends in special film coating operations. By real-time monitoring and adjusting coating liquid parameters, the accuracy and stability of edge compensation are guaranteed. In the production of lithium battery separators, accurate edge thickness compensation can ensure uniform ion conductivity at the separator edge, thereby improving battery charge and discharge efficiency and safety.

[0042] Embodiment 2: In the present invention, according to Figure 1 - Figure 4 As shown, the feed control component 2 includes:

[0043] A screw pump 21, an electromagnetic heating sleeve 22, a coating liquid sterilization box 23 and an appropriate amount dispenser 24. The electromagnetic heating sleeve 22 is installed on the outer peripheral side of the stirring screw in the screw pump 21. The side end of the electromagnetic heating sleeve 22 is connected to the side wall of the coating liquid sterilization box 23 through the pumping valve port. The appropriate amount dispenser 24 is installed on the side end of the coating liquid sterilization box 23.

[0044] The top end of the appropriate amount distributor 24 is connected to the appropriate amount coating liquid guide valve tube 3 , and the side end of the appropriate amount coating liquid guide valve tube 3 is connected to the side end of the high-precision pressure control valve 43 .

[0045] A classified micro-flow regulating plunger pump valve 25 is installed at the side end of the coating liquid sterilization box 23, and the top of the side end of the classified micro-flow regulating plunger pump valve 25 is connected to a classified duct 290. The side of the transverse electromagnetic suspension guide rail 3 is slidably connected with a positioning sliding seat 26, and a hinge structure 27 is installed at the side end of the positioning sliding seat 26. The side end of the hinge structure 27 is fastened with a connecting drive stepping push frame 28.

[0046] The side end of the driving stepping push frame 28 is fastened to a synchronous fixed frame plate 29, a microfluidic flow guide 291 is installed on the surface of the synchronous fixed frame plate 29, the side end of the classification catheter 290 is connected to the microfluidic flow guide 291, and the top surface of the microfluidic flow guide 291 is connected to a catheter 294.

[0047] The side end of the conduit 294 is connected to an automatic coating liquid thickening guide 296 , and a spray control valve 295 is installed at the connecting end of the conduit 294 and the automatic coating liquid thickening guide 296 .

[0048] The bottom end of the coating liquid automatic thickening guide 296 is connected to a coating liquid regulating tube 293, the bottom surface of the microfluidic flow guide 291 is connected to a coating liquid straight-through valve tube 292, and the bottom end of the coating liquid straight-through valve tube 292 is connected to a switching valve tube 297.

[0049] The side end of the coating liquid regulating tube 293 is connected to the surface of the switching valve tube 297 through the adaptive solenoid valve, and the bottom end of the switching valve tube 297 is connected to the coating liquid head 298 .

[0050] In a specific scheme, when the above-mentioned thin film coating operation is performed, the coating liquid is added to the hopper of the screw pump 21, and then the screw pump 21 is started, so that the stirring screw rotates under the drive of its internal motor, and the coating liquid is transported from the hopper to the area wrapped by the electromagnetic heating sleeve 22. At the same time, the electromagnetic heating sleeve 22 heats the coating liquid according to the preset temperature to keep the viscosity of the coating liquid stable, which is convenient for subsequent pumping and coating operations. The heated coating liquid then enters the coating liquid sterilization box 23 through the pumping valve port, and is sterilized in the coating liquid sterilization box 23 to prevent microbial impurities generated during long-term storage and ensure the quality of the coating liquid. The sterilized coating liquid enters the proper amount dispenser 24, so that the proper amount dispenser 24 accurately distributes the amount of coating liquid according to the process requirements such as the area and thickness of the film coating, and transports the coating liquid to the high-precision pressure control valve 43 through the proper amount coating liquid guide valve tube 3, so as to provide a stable and proper amount of coating liquid source for subsequent coating operations. After that, when the film needs to be processed (such as thickening coating, coating with different formulas, etc.), the classification micro-flow regulating plunger pump valve 25 is started according to the instruction of the external PLC controller, and a specific type of coating liquid is extracted from the coating liquid sterilization box 23, and it is transported to the microfluidic flow guide 291 through the classification conduit 290, and then connected The stepping push frame 28 is driven by the hinge structure 27 to drive the synchronous fixed frame plate 29 to perform displacement operation, and the microfluidic flow guide 291 is accurately moved above the film operation. During the movement, the transverse electromagnetic suspension guide rail 3 ensures the smooth movement of the positioning slide seat 26, and improves the accuracy of position adjustment. After that, the microfluidic flow guide 291 accurately transports the coating liquid to the conduit 294 based on the analysis and judgment of the flow parameters. When thickening coating is required, the spray control valve 295 is opened, and the coating liquid enters the coating liquid automatic thickening guide 296. In the coating liquid automatic thickening guide 296, the coating liquid is pressurized by the built-in micro pressurizer The increase enables the pressurized coating liquid to be transported to the switching valve pipe 297 through the control of the coating liquid regulating pipe 293 and the adaptive solenoid valve, and finally sprayed from the coating head 298 to the thin film operation area, so that it has a greater impact force when spraying, further improving the thickness and adhesion of the coating. When thickening the coating is not required, the coating liquid straight-through valve pipe 292 directly transports the coating liquid to the switching valve pipe 297, and sprays it from the coating head 298 to achieve normal coating operation. During the whole process, the adaptive solenoid valve flexibly switches the flow direction of the coating liquid according to the instructions of the PLC controller, realizes the rapid conversion of different coating requirements, and effectively guarantees the product quality of the thin film coating operation as a whole.

[0051] The wiring diagram of the electromagnetic heating sleeve 22, microfluidic flow guide 291, coating liquid automatic thickening guide 296, high-precision pressure control valve 43, coating liquid viscosity regulator 44, motor rotating box 45, angle rotation detector 46, micro-control driver 493, edge thickness sensor and edge shape visual detection sensor in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the electromagnetic heating sleeve 22, microfluidic flow guide 291, coating liquid automatic thickening guide 296, high-precision pressure control valve 43, coating liquid viscosity regulator 44, motor rotating box 45, angle rotation detector 46, micro-control driver 493, edge thickness sensor and edge shape visual detection sensor are no longer explained in detail.

[0052] The method of use and working principle of this device are as follows: first, when performing a thin film coating operation, the coating liquid is added to the hopper of the screw pump 21, and then the screw pump 21 is started, so that the stirring screw rotates under the drive of its internal motor, and the coating liquid is transported from the hopper to the area wrapped by the electromagnetic heating sleeve 22. At the same time, the electromagnetic heating sleeve 22 heats the coating liquid according to the preset temperature, and then the heated coating liquid enters the coating liquid sterilization box 23 through the pumping valve port, and is sterilized in the coating liquid sterilization box 23. The sterilized coating liquid then enters the appropriate dispenser 24, so that the appropriate dispenser 24 accurately distributes the amount of coating liquid according to the process requirements such as the area and thickness of the thin film coating, and transports the coating liquid to the pressure through the appropriate amount of coating liquid guide valve pipe 3. The high-precision control valve 43 provides a stable and appropriate source of coating liquid for subsequent coating operations. When the film needs to be processed (such as thickening coating, coating with different formulas, etc.), the classified micro-flow regulating plunger pump valve 25 is started according to the command of the external PLC controller, and a specific type of coating liquid is extracted from the coating liquid sterilization box 23, and it is transported to the microfluidic flow guide 291 through the classification duct 290. Then, it is connected to the driving step push frame 28 and driven by the hinge structure 27 to drive the synchronous fixed frame plate 29 to perform displacement operations, and the microfluidic flow guide 291 is accurately moved to the top of the film operation. During the movement, the transverse electromagnetic suspension guide rail 3 ensures the smooth movement of the positioning slide seat 26, improves the accuracy of position adjustment, and then the microfluidic flow The guide 291 accurately conveys the coating liquid to the conduit 294 based on the analysis and judgment of the flow parameters. When thickening coating is required, the spray control valve 295 is opened, and the coating liquid enters the coating liquid automatic thickening guide 296. In the coating liquid automatic thickening guide 296, the coating liquid is pressurized by a built-in micro-pressurizer, so that it is controlled by the coating liquid regulating tube 293 and the adaptive solenoid valve, and the pressurized coating liquid is conveyed to the switching valve tube 297, and finally sprayed from the coating head 298 to the film working area. When thickening coating is not required, the coating liquid straight-through valve tube 292 directly conveys the coating liquid to the switching valve tube 297, and sprays it from the coating head 298 to realize normal coating operation. Secondly, the edge thickness sensor monitors the film thickness in real time. The thickness of the film edge (the film during film machine operation) is coordinated, and the thickness data is transmitted to the logic control processor connected to the edge adaptive compensation component 4. The logic control processor determines whether the thickness of the film edge is uniform based on the received thickness data. When the edge thickness is detected to be uneven, the logic control processor controls the longitudinal electromagnetic suspension guide rail 41 to drive the sliding connection position frame 42 to move to the edge position that needs to be compensated, so that when the thickness on the left side of the edge is thinner, the sliding connection position frame 42 moves to the left to the corresponding position, so that the coating liquid valve metering nozzle 490 is aligned with the thinner area. According to the edge thickness, the logic control processor adjusts the opening of the high-precision pressure control valve 43 to change the pressure of the coating liquid. When it is detected that the edge thickness is thin, the coating liquid pressure is increased.More coating liquid is sprayed out from the connecting and regulating nozzle end 491, and when the edge thickness is detected to be too thick, the pressure is reduced. At the same time, the viscosity of the coating liquid is adjusted by the coating liquid viscosity regulator 44 to adapt to different compensation requirements, so that when the thickness needs to be increased quickly, the viscosity is appropriately reduced to make the coating liquid easier to flow and spread. Then the micro-flow guide valve tube 49 accurately controls the flow of the coating liquid according to the instructions of the logic control processor. After that, after adjusting the pressure, viscosity and flow, the coating liquid is transported to the coating liquid valve amount nozzle 490 through the micro-flow guide valve tube 49, and then sprayed from the connecting and regulating nozzle end 491 to the edge of the film. During the spraying process, the angle rotation detector 46 monitors the angle changes of the first azimuth drive arm 47 and the second azimuth drive arm 48 in real time, and feeds back the data to the logic control processor, so that the logic control processor synchronously sends new instructions to the motor rotation box 45 according to the distribution of the edge thickness, so that the motor rotation box 4 The first azimuth driving arm 47 and the second azimuth driving arm 48 are driven to rotate, and the angle of the coating liquid valve metering nozzle 490 is adjusted, so that when a specific thickness gradient effect is required to be formed on the edge, the coating liquid is sprayed to the edge of the film in different directions and angles by precisely controlling the angle, and in cooperation with the edge shape visual detection sensor installed on the surface of the side support structure, according to the uneven thickness of the edge, the micro-control driver 493 drives the angle plug-in adjustment plate 494 to move according to the instruction of the logic control processor, thereby adjusting the position of the nozzle head caliber adjustment plate and changing the nozzle caliber of the nozzle end 491, that is, when the spraying amount of the coating liquid needs to be increased, the nozzle caliber is enlarged, and when a small flow of the coating liquid needs to be precisely controlled, the nozzle caliber is reduced. At the same time, the edge contact plate 492 is fine-tuned according to the actual situation of the edge of the film, and the contact distance and angle with the edge of the film are fine-tuned within a certain range, so as to further optimize the adhesion effect of the coating liquid on the edge.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding device for thin film coating processing, characterized in that: Included are: A feed control assembly (2) is mounted on the side end of the side support structure (1) and is slidably connected to the side end of the top transverse electromagnetic suspension rail (3) of the support structure (1), and is used to accurately control the flow rate of the coating liquid according to the coating process requirements during the film coating operation, so that the uniformity of the overall coating thickness can be guaranteed during the special coating operation; An edge adaptive compensation component (4) is mounted on the frame of the side support structure (1) and is used to ensure uniform ion conduction performance and mechanical strength of the membrane edge when performing special coating operations such as lithium battery membranes, in cooperation with an edge thickness sensor mounted on the surface of the side support structure (1), in the production of products with high edge quality requirements; The feed control component (2) comprises: A screw pump (21), an electromagnetic heating sleeve (22), a coating liquid sterilizing box (23) and an appropriate amount distributor (24), wherein the electromagnetic heating sleeve (22) is installed on the outer peripheral side of the stirring screw in the screw pump (21), the side end of the electromagnetic heating sleeve (22) is connected to the side wall of the coating liquid sterilizing box (23) through a pumping valve port, and the appropriate amount distributor (24) is installed on the side end of the coating liquid sterilizing box (23); The edge adaptive compensation component (4) comprises: A longitudinal electromagnetic suspension rail (41), a sliding connection position frame (42) and a high-precision pressure control valve (43), wherein the longitudinal electromagnetic suspension rail (41) is firmly connected to the surface of the side support structure (1), and the sliding connection position frame (42) is located at the top end of the longitudinal electromagnetic suspension rail (41) and is slidingly connected.

2. The feeding device for thin film coating processing according to claim 1, characterized in that: A motor rotating box (45) is installed at the side end of the sliding connection position frame (42), and an angle rotation detector (46) is installed at the side end of the motor rotating box (45). The side end of the angle rotation detector (46) is fastened with a first azimuth driving rotating arm (47), and the side end of the first azimuth driving rotating arm (47) is rotatably connected to a second azimuth driving rotating arm (48), and the bottom end of the second azimuth driving rotating arm (48) is connected to a coating liquid valve metering nozzle (490).

3. The feeding device for thin film coating processing according to claim 2, characterized in that: The side end of the coating liquid valve metering nozzle (490) is connected to a micro-flow guide valve tube (49), and the side end of the micro-flow guide valve tube (49) is connected to a coating liquid viscosity regulator (44). The top of the coating liquid viscosity regulator (44) is connected to a high-precision pressure control valve (43), and the bottom of the coating liquid valve metering nozzle (490) is connected to a connecting control nozzle end (491).

4. The feeding device for thin film coating processing according to claim 3, characterized in that: A fine-tuning edge contact plate (492) is installed on the side wall of the connecting and regulating spray end (491), and two groups of micro-control drivers (493) are symmetrically installed on the left and right sides of the internal cavity of the connecting and regulating spray end (491). An angle plug-in adjustment plate (494) is installed on the side end of the micro-control driver (493), and the bottom end of the angle plug-in adjustment plate (494) is fastened to the liquid spray head caliber adjustment plate.

5. The feeding device for thin film coating processing according to claim 1, characterized in that: The top end of the appropriate amount distributor (24) is connected to an appropriate amount coating liquid guide valve tube (3), and the side end of the appropriate amount coating liquid guide valve tube (3) is connected to the side end of the high-precision pressure control valve (43).

6. The feeding device for thin film coating processing according to claim 1, characterized in that: A classification micro-flow regulating plunger pump valve (25) is installed on the side end of the coating liquid sterilization box (23), and the top of the side end of the classification micro-flow regulating plunger pump valve (25) is connected to a classification duct (290). The side of the transverse electromagnetic suspension guide rail (3) is slidably connected to a positioning sliding seat (26), and a hinge structure (27) is installed on the side end of the positioning sliding seat (26). The side end of the hinge structure (27) is fastened with a connection driving stepping push frame (28).

7. The feeding device for thin film coating processing according to claim 6, characterized in that: The side end of the connection driving step push frame (28) is fastened to a synchronous fixed frame plate (29), a microfluidic flow guide (291) is installed on the surface of the synchronous fixed frame plate (29), the side end of the classification conduit (290) is connected to the microfluidic flow guide (291), and the top surface of the microfluidic flow guide (291) is connected to a conduit (294).

8. The feeding device for thin film coating processing according to claim 7, characterized in that: The side end of the conduit (294) is connected to an automatic coating liquid thickening guide (296), and a spray control valve (295) is installed at the connecting end of the conduit (294) and the automatic coating liquid thickening guide (296).

9. The feeding device for thin film coating processing according to claim 8, characterized in that: The bottom end of the coating liquid automatic thickening guide (296) is connected to a coating liquid regulating tube (293), the bottom surface of the microfluidic flow guide (291) is connected to a coating liquid straight-through valve tube (292), and the bottom end of the coating liquid straight-through valve tube (292) is connected to a switching valve tube (297).

10. The feeding device for thin film coating processing according to claim 9, characterized in that: The side end of the coating liquid regulating tube (293) is connected to the surface of the switching valve tube (297) through an adaptive electromagnetic valve, and the bottom end of the switching valve tube (297) is connected to the coating liquid head (298).

Images