CN111785931B - Coating, drying and calendaring mechanism - Google Patents
Coating, drying and calendaring mechanism Download PDFInfo
- Publication number
- CN111785931B CN111785931B CN202010746440.7A CN202010746440A CN111785931B CN 111785931 B CN111785931 B CN 111785931B CN 202010746440 A CN202010746440 A CN 202010746440A CN 111785931 B CN111785931 B CN 111785931B
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- coating
- calendaring
- roller
- drying
- heating roller
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- 239000011248 coating agent Substances 0.000 title claims abstract description 82
- 238000000576 coating method Methods 0.000 title claims abstract description 82
- 230000007246 mechanism Effects 0.000 title claims abstract description 53
- 238000003490 calendering Methods 0.000 title claims abstract description 36
- 238000001035 drying Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000013543 active substance Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000007772 electrode material Substances 0.000 claims abstract description 5
- 239000011888 foil Substances 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 23
- 238000003860 storage Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000011149 active material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a coating, drying and calendaring mechanism, which is arranged in a vacuum cavity and is used for coating an active substance mixture on the surface of a substrate with a positive electrode and a negative electrode of a metal foil to form an electrode material film, wherein an infrared heating device is arranged above the substrate, a heating roller set comprises a plurality of heating rollers which are horizontally arranged and are in transmission connection with each other, a coating mechanism is arranged at the feeding end of the heating roller set, a calendaring mechanism is arranged at the discharging end of the heating roller set, a thickness gauge is respectively arranged in the coating mechanism and the calendaring mechanism and is used for detecting the coating thickness of the surface of the substrate, and a controller is electrically connected with the infrared heating device, the heating rollers, the thickness gauge, the coating mechanism and the calendaring mechanism; according to the invention, the upper surface and the lower surface of the substrate are heated simultaneously, so that the drying efficiency of the coating material on the surface of the substrate is accelerated, the film forming thickness is detected in real time through the thickness gauge, and the coating material is coated on the substrate by a preset thickness value through feedback of the controller to each part.
Description
Technical Field
The invention relates to the technical field of lithium ion battery manufacturing, in particular to a coating, drying and calendaring mechanism.
Background
The existing lithium ion battery production process is to coat a negative electrode material and a positive electrode material on a copper foil and an aluminum foil respectively, and the process is completed through baking and delay pressing, but in the prior art, the thickness or density of the produced positive and negative electrode materials is difficult to control, so that the whole weight is difficult to reduce, and the thickness and higher compactness of a smaller electrode part cannot be obtained by a conventional calendaring method, so that the battery energy under the same volume and weight is greatly shortened.
Therefore, how to provide a coating, drying and calendaring mechanism is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art to a certain extent, and provides a coating, drying and calendaring mechanism which completes the whole process of coating, drying and calendaring of anode and cathode materials in a vacuum state, and the obtained coating has the characteristics of compactness and better binding force.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a coating, drying and calendaring mechanism disposed in a vacuum chamber for coating an active material mixture on the surface of a substrate having positive and negative electrodes of a metal foil to form an electrode material film, comprising:
the fixed mounting plates are positioned at two sides in the vacuum cavity;
the infrared heating device is arranged above the base material, and two sides of the infrared heating device are fixedly connected with the two fixed mounting plates respectively;
the heating roller set comprises a plurality of heating rollers which are horizontally arranged and connected with each other in a transmission way, a coating mechanism is arranged at the feeding end of the heating roller set, and a calendaring mechanism is arranged at the discharging end of the heating roller set;
the thickness gauge is respectively arranged in the coating mechanism and the calendaring mechanism and is used for detecting the coating thickness of the surface of the substrate;
and the controller is electrically connected with the infrared heating device, the heating roller, the thickness gauge, the coating mechanism and the calendaring mechanism.
Through the scheme, the upper surface and the lower surface of the substrate are heated simultaneously, so that moisture can be dried rapidly, the drying efficiency of the coating material on the surface of the substrate is improved, meanwhile, the coating area and the electrode area can be softened, the cohesiveness of the coating material and the surface of the substrate can be realized, the film forming thickness is detected in real time through the thickness gauge, and the coating material is coated on the substrate with a preset thickness value through feedback of the controller to each part.
Further, the infrared heating device comprises a plurality of infrared heating pipes and a support frame, the infrared heating pipes are electrically connected with the controller, two ends of the support frame are fixedly connected to the fixed mounting plate respectively, a plurality of mounting holes are correspondingly formed in the two sides along the length direction, the infrared heating pipes are in one-to-one correspondence with the mounting holes, and two ends of the infrared heating pipes are fixed in the mounting holes in the two sides of the support frame respectively.
Further, the calendaring mechanism comprises a pushing piece, a bearing and a pressing roller, wherein the pressing roller is horizontally arranged right above the discharge end of the heating roller set and is in transmission connection with the heating roller below; the compression roller is characterized in that the bearings are sleeved at the two ends of the compression roller, two sides of the compression roller are respectively provided with two vertical guide rails, a sliding block is connected between the two vertical guide rails in a sliding mode, the bearings are located on the sliding blocks, the pushing piece is arranged above the bearings and is electrically connected with the controller, and the driving end of the pushing piece is fixedly connected with the sliding blocks.
Further, the pushing piece comprises a driving motor and a vertically arranged screw rod, and the driving motor is electrically connected with the controller; the bottom of the screw rod is fixedly connected with the sliding block, and the top of the screw rod is fixedly connected with the driving motor.
The beneficial effect of adopting above-mentioned scheme is, through the rotational speed of control driving motor, changes the rotational speed of lead screw to realize adjusting the distance of compression roller and below heating roller, with the effort of changing the coating material that is used in the substrate surface, adjust the thickness of electrode material membrane.
Further, the coating mechanism comprises a scraper, a storage tank and a coating material transition roller, wherein the top of the storage tank is connected with a feeding pipe, and the feeding pipe is provided with two valves respectively; the bottom of the storage tank is provided with a spraying opening, the spraying opening corresponds to the coating material transition roller, the coating material transition roller is abutted to the surface of the base material and is used for coating the active substance mixture on the base material, and the coating material transition roller is horizontally arranged right above the feeding end of the heating roller set and is synchronously in transmission connection with the heating roller positioned below; one side of the coating material transition roller is provided with the scraper, the scraper is electrically connected with the controller, and a gap for passing the active substance mixture is reserved between the edge of the scraper and the coating material transition roller.
The technical scheme has the beneficial effects that the thickness of the film is monitored in real time through the thickness gauge, the scraper is adjusted to rotate in a micro-quantity, and the gap between the scraper and the coating material transition roller is changed, so that the coating material is coated on the substrate with the expected thickness; the coating material is supplied to the outside by adopting two channels, so that continuous production is ensured, and the flow of the feeding material can be regulated by arranging a valve.
Further, the scraper comprises a cutter shaft and a group of cutters which are oppositely connected to the cutter shaft, the section of each cutter is fan-shaped, and arc-shaped cutting edges are arranged on two sides of each cutter.
The beneficial effect of adopting above-mentioned scheme is, the controller control scraper does the trace and rotates, changes rotation angle just can change the gap with coating material transition roller between to the cutter is established to two, has better maneuverability, and another cutter is damaged to another cutter also can be used, does not influence production, and arc structure has improved the stability of structure in addition.
Further, a stirring wheel is arranged in the storage tank.
The technical scheme has the beneficial effects that the coating materials in the storage tank are stirred, so that the material proportion and the viscosity are kept uniform.
Further, the thickness gauge is an ultrasonic thickness gauge.
Compared with the prior art, the invention discloses a coating, drying and calendaring mechanism, which detects the film thickness in real time through a thickness gauge and feeds back the film thickness to the calendaring mechanism and the coating mechanism through a controller, so that the obtained metal electrode has smaller thickness, and the battery energy under the same volume and weight can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram provided by the present invention.
FIG. 2 is a schematic structural view of an infrared heating device according to the present invention.
Fig. 3 is a schematic structural view of the coating mechanism of the present invention.
Fig. 4 is a schematic structural view of the calendaring mechanism of the invention.
Fig. 5 is a schematic structural view of the doctor blade of the invention.
Fig. 6 is a flowchart of the operation of the ultrasonic thickness gauge of the present invention.
Fig. 7 is a flowchart of the operation of the temperature measuring instrument of the present invention.
Fig. 8 is a schematic diagram of a structure of a plated film according to an embodiment of the invention.
Wherein:
10-an infrared heating device; 20-heating roller group; 30-a coating mechanism; 40-a calendaring mechanism; 11-an infrared heating tube; 12-supporting frames; 41-pushing member; 42-bearing; 43-a press roll; 44-a slider; 411-driving motor; 412-a screw; 31-scraping knife; 32-a storage tank; 33-coating material transition roller; 34-a material spraying port; 311-knife shaft; 312-knife; 321-stirring wheels; 50-PET plastic film; 60-metal positive electrode; 70-a metal negative electrode; 80-a positive electrode material film; 90-negative electrode material film.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The embodiment of the invention discloses a coating, drying and calendaring mechanism, which is arranged in a vacuum cavity and is used for coating active substance mixture on the surface of a substrate with a positive electrode and a negative electrode of a metal foil to form an electrode material film, and comprises the following steps: the infrared heating device 10, the heating roller set 20, the thickness gauge and the controller, wherein a PET plastic film is selected as a base material in the embodiment, fixed mounting plates are arranged on two sides in the vacuum cavity, the infrared heating device 10 is arranged above the base material and comprises a plurality of infrared heating pipes 11 and a supporting frame 12, the infrared heating pipes 11 are ceramic sleeve quartz heating pipes, two ends of the supporting frame 12 are respectively fixedly connected to the fixed mounting plates, a plurality of mounting holes are correspondingly formed on two sides of the supporting frame 12 along the length direction, the plurality of infrared heating pipes 11 are in one-to-one correspondence with the mounting holes, two ends of the infrared heating pipes 11 are respectively fixed in mounting holes on two sides of the supporting frame 12, further, the supporting frame 11 can be composed of an upper part and a lower part, the lower part is fixed on an inner shell of the vacuum cavity, and the upper part is connected with the lower part through bolts;
the heating roller set 20 comprises a plurality of heating rollers which are horizontally arranged and connected with each other in a transmission way, and can adopt electromagnetic heating rollers which are directly driven by a motor, the rest electromagnetic heating rollers are connected and transmit power by a synchronous belt and a synchronous wheel, and each electromagnetic heating roller is controlled by a PLC (programmable logic controller) controller, so that the temperature of each heating roller can be adjusted;
advantageously, a temperature measuring instrument is further arranged, the measured temperature is compared with the target temperature by adopting a PT100 thermocouple, and the power of heating of the infrared heating pipe or the electromagnetic heating roller is adjusted by the PLC controller so as to enable the actual temperature to reach the set target temperature;
the feeding end of the heating roller set 20 is provided with a coating mechanism 30, the discharging end of the heating roller set 20 is provided with a calendaring mechanism 40, and the thickness meter is an ultrasonic thickness meter and is respectively arranged in the coating mechanism 30 and the calendaring mechanism 40 and used for detecting the coating thickness of the surface of a substrate and feeding back information to a controller, and the controller controls the coating mechanism 30 and the calendaring mechanism 40 to change the coating thickness so as to obtain a set thickness value; the controller is electrically connected to the infrared heating device 10, the heating roller group 20, the thickness gauge, the coating mechanism 30, and the calendaring mechanism 40.
Specifically, the coating mechanism 30 comprises a scraper 31, a storage tank 32 and a coating material transition roller 33, the top of the storage tank 32 is connected with a feeding pipe, two feeding pipes are arranged for preventing production from stopping, valves are respectively arranged, two electric screw ball valves are adopted for mutual switching, the types of the valves are Q911F-16P, the supplied coating material is ensured to be uninterrupted, and meanwhile, the flow rate can be controlled and regulated; the bottom of the storage tank 32 is provided with a material spraying opening 34, the material spraying opening 34 corresponds to a coating material transition roller 33, the coating material transition roller 33 is abutted to the surface of a substrate, an active substance mixture is coated on the substrate, the coating material transition roller 33 is horizontally arranged right above the feeding end of the heating roller set 20 and is synchronously connected with a heating roller positioned below, it is required to be noted that fixed mounting plates are arranged on two sides in a vacuum cavity where the coating, drying and calendaring mechanism is positioned, bearings are mounted on two ends of the coating material transition roller 33, the bearings are connected with the fixed mounting plates on two sides, and the outside of the bearings are in transmission connection with the heating roller below through a synchronous wheel and a synchronous belt; one side of the coating material transition roller 33 is provided with a scraper 31, and a gap for passing the active material mixture is left between the edge of the scraper 31 and the coating material transition roller 33.
The calendaring mechanism 40 comprises a pushing piece 41, a bearing 42 and a pressing roller 43, wherein the pressing roller 43 is horizontally arranged right above the discharge end of the heating roller set 20 and is in transmission connection with a heating roller positioned below through a belt; the two ends of the press roller 43 are sleeved with bearings 42, guide rails are arranged on the fixed mounting plates on the two sides, a sliding block 44 is connected between the guide rails in a sliding way, the bearings 42 are positioned on the sliding block 44, a pushing piece 41 is arranged above the sliding block 44 and is electrically connected with a controller, and the driving end of the pushing piece is fixedly connected with the sliding block 44 to drive the sliding block 44 to move up and down on the guide rails
The pushing piece 41 is arranged above the bearing 42 and is electrically connected with the controller, and the driving end of the pushing piece 41 is fixedly connected with the bearing 42; the pushing piece 41 comprises a driving motor 411 and a vertically arranged screw rod 412, the bottom end of the screw rod 412 is fixedly connected with the bearing 42, the top end of the screw rod 412 is fixedly connected with the driving motor 411, and the driving motor 411 is electrically connected with the controller.
Advantageously, the storage tank 32 is provided with a stirring wheel therein to stir the coating material in the storage tank to maintain a uniform material formulation and viscosity.
In a specific embodiment, the scraper 31 comprises a cutter shaft 311 and a group of cutters 312 oppositely connected to the cutter shaft, the sections of the cutters 312 are fan-shaped, two sides of the cutters are provided with arc-shaped cutting edges, two ends of the cutter shaft are fixed on the fixed mounting plates at two sides through bearings, one end of the cutter shaft is in sealing connection with the inner wall of the vacuum cavity through a magnetic fluid sealing bearing and extends out of the vacuum cavity, and the cutter shaft is in transmission connection with an external gear motor through a coupler; the controller can control the cutter shaft to do micro-rotation, the gap between the cutting edge and the coating material transition roller can be changed by changing the rotation angle, the coating thickness of the surface of the base material is changed, and two cutters are arranged, so that the cutter has better operability, one cutter is damaged, the other cutter can be used, the production is not influenced, and in addition, the strength and the structural stability of the cutters are improved by the arc-shaped structure.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A coating, drying and calendaring mechanism disposed in a vacuum chamber for coating an active material mixture on the surface of a substrate having a positive electrode and a negative electrode of a metal foil to form an electrode material film, comprising:
the fixed mounting plates are positioned at two sides in the vacuum cavity;
the infrared heating device (10) is arranged above the base material, and two sides of the infrared heating device (10) are fixedly connected with the two fixed mounting plates respectively;
the heating roller set (20) comprises a plurality of heating rollers which are horizontally arranged and connected with each other in a transmission way, a coating mechanism (30) is arranged at the feeding end of the heating roller set (20), and a calendaring mechanism (40) is arranged at the discharging end of the heating roller set (20);
the thickness gauge is respectively arranged in the coating mechanism (30) and the calendaring mechanism (40) and is used for detecting the coating thickness of the surface of the substrate;
the controller is electrically connected with the infrared heating device (10), the heating roller set (20), the thickness gauge, the coating mechanism (30) and the calendaring mechanism (40);
the infrared heating device (10) comprises a plurality of infrared heating pipes (11) and a supporting frame (12), wherein two ends of the supporting frame (12) are respectively and fixedly connected to the fixed mounting plate, a plurality of mounting holes are correspondingly formed in the two sides along the length direction, the infrared heating pipes (11) are in one-to-one correspondence with the mounting holes, and two ends of the infrared heating pipes (11) are respectively fixed in the mounting holes in the two sides of the supporting frame (12);
the calendaring mechanism (40) comprises a pushing piece (41), a bearing (42) and a pressing roller (43), wherein the pressing roller (43) is horizontally arranged right above the discharge end of the heating roller set (20) and is in transmission connection with the heating roller below; the two ends of the press roller (43) are sleeved with the bearings (42), two sides of the press roller are respectively provided with two vertical guide rails, a sliding block (44) is connected between the two vertical guide rails in a sliding mode, the bearings (42) are positioned on the sliding blocks (44), the pushing piece (41) is arranged above the bearings (42) and is electrically connected with the controller, and the driving end of the pushing piece (41) is fixedly connected with the sliding blocks (44);
the coating mechanism (30) comprises a scraper (31), a storage tank (32) and a coating material transition roller (33), wherein the top of the storage tank (32) is connected with a feeding pipe, and the feeding pipe is provided with two feeding pipes and valves respectively; the bottom of the storage tank (32) is provided with a spraying opening (34), the spraying opening (34) corresponds to the coating material transition roller (33), the coating material transition roller (33) is abutted against the surface of the base material, the active substance mixture is coated on the base material, and the coating material transition roller (33) is horizontally arranged right above the feeding end of the heating roller set (20) and is in synchronous transmission connection with the heating roller below; one side of the coating material transition roller (33) is provided with the scraper (31), two ends of the scraper (31) are fixed on the fixed mounting plates on two sides through bearings, the scraper (31) is electrically connected with the controller, and a gap for passing an active substance mixture is reserved between the cutting edge of the scraper (31) and the coating material transition roller (33).
2. The coating, drying and calendaring mechanism according to claim 1, characterized in that the pushing piece (41) comprises a driving motor (411) and a vertically arranged screw rod (412), the bottom end of the screw rod (412) is fixedly connected with the sliding block (44), and the top end of the screw rod (412) is fixedly connected with the driving motor (411).
3. A coating, drying and calendaring mechanism according to claim 1, characterized in that the doctor blade (31) comprises a cutter shaft (311) and a set of cutters (312) oppositely connected to the cutter shaft, the cutters (312) being fan-shaped in cross section and having arcuate edges on both sides.
4. A coating, drying and calendaring mechanism according to claim 1, characterized in that a stirring wheel (321) is arranged in the storage tank (32).
5. The coating, drying and calendaring mechanism of claim 1, wherein said thickness gauge is an ultrasonic thickness gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113978105B (en) * | 2021-11-20 | 2023-05-09 | 深圳恩泽瑞显示科技有限公司 | LCD glass dissecting device |
| CN114700232B (en) * | 2022-04-09 | 2023-02-03 | 深圳市智力昌智能设备有限公司 | Coating, drying and rolling mill |
| CN115570868A (en) * | 2022-10-17 | 2023-01-06 | 宁波中科毕普拉斯新材料科技有限公司 | Production system of electromagnetic shielding composite material |
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