CN113828478B - Low-surface-density high-speed extrusion type coating equipment for lithium battery pole piece - Google Patents
Low-surface-density high-speed extrusion type coating equipment for lithium battery pole piece Download PDFInfo
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- CN113828478B CN113828478B CN202110943285.2A CN202110943285A CN113828478B CN 113828478 B CN113828478 B CN 113828478B CN 202110943285 A CN202110943285 A CN 202110943285A CN 113828478 B CN113828478 B CN 113828478B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
- B05C11/048—Scrapers, i.e. metering blades having their edge oriented in the upstream direction in order to provide a reverse angle of attack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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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
- H01M4/04—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
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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
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- 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
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the technical field of lithium battery pole piece production, in particular to a high-speed extrusion type coating device for a low-surface-density lithium battery pole piece, which comprises a rack, wherein a motor is arranged outside the rack, an output shaft is fixedly sleeved at the output end of the motor, a coating roller is fixedly sleeved on the outer wall of the output shaft, a baffle is sleeved on the outer wall of the coating roller, a scraping device is fixedly installed on the left side of the rack, a flexible rubber roller is arranged on the feeding side of the scraping device, a material accommodating groove is formed in the roller surface of the flexible rubber roller, the roller body of the flexible rubber roller abuts against a pole piece attached to the coating roller, and the roller body of one side of the flexible rubber roller, which is far away from the coating roller, abuts against the bottom end of the rack; according to the invention, the flexible rubber roller is arranged on the incoming material side of the scraping device, the flexible rubber roller can transfer away the part of the slurry sprayed on the pole piece, and the scraping device is used for scraping the pole piece, so that the low-surface-density coating function is realized, and the coating device can be suitable for the coating requirement of the power type lithium battery pole piece.
Description
Technical Field
The invention relates to the technical field of lithium battery pole piece production, in particular to high-speed extrusion type coating equipment for a low-surface-density lithium battery pole piece.
Background
With the continuous development of scientific technology, lithium batteries become mainstream, the preparation of the lithium batteries is more and more emphasized, the pole piece slurry coating technology of the lithium batteries is one of the keys of the development and production of the lithium batteries, and most of the pole piece slurry coating technology is continuous coating on a piece web no matter film coating or other coating products. Coating and pole piece drying are two important process flows for manufacturing the lithium battery, wherein the coating is to uniformly coat slurry required by manufacturing the lithium battery on a metal substrate, and the coating effect directly influences the drying result of the pole piece. The pole piece drying is an operation of drying the coated pole piece in a drying oven.
In the prior art, firstly, in a conventional coating device for a battery pole piece, when a coated pole piece is dried and then wound at the tail of a coating machine, the edge of the pole piece can bulge and break, the strip is easily broken and the pole piece is scrapped in the winding process of the pole piece, and the coating production efficiency and the quality of the pole piece are seriously reduced while the pole piece and foil are wasted; fourthly, for some power lithium batteries, the positive and negative electrode plates need to be coated at low surface density, and the traditional lithium battery electrode plate coating equipment cannot complete the low surface density coating operation of the electrode plates due to the limitation of the particle sizes of the positive and negative electrodes.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides high-speed extrusion type coating equipment for a lithium battery pole piece with low areal density.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-speed extrusion type coating device for a low-areal density lithium battery pole piece comprises a rack, wherein the bottom end of the rack is provided with a mounting groove, and a coating nozzle is fixedly mounted inside the mounting groove;
the utility model discloses a coating machine, including frame, outer wall, baffle, regulation pole, outer wall sliding connection, scraper device, flexible rubber roll, the outside of frame is provided with the motor, the fixed output shaft that has cup jointed of output end of motor, the fixed coating roll that has cup jointed of outer wall of output shaft, the baffle has been cup jointed to the outer wall of coating roll, the inner wall fixedly connected with regulation pole of frame, the outer wall sliding connection who adjusts the pole has the movable block, the left side fixed mounting of frame has the scraper device, flexible rubber roll has been arranged to the supplied materials side of scraper device, it holds the silo to have seted up on the roll surface of flexible rubber roll, and the shaft of this flexible rubber roll with lean on the pole piece that leans on the coating roll and offset, one side shaft of coating roll is kept away from to flexible rubber roll with the bottom of frame is leaned on.
In a further technical scheme, a driving mechanism is arranged at one end of the flexible rubber roll and used for driving the flexible rubber roll to rotate, and the rotating direction of the flexible rubber roll is opposite to that of the coating roll.
In a further technical scheme, the material containing grooves extend along the roller length direction of the flexible rubber roller, and a plurality of material containing grooves are arranged on the circumferential surface of the flexible rubber roller at uniform intervals.
In a further technical scheme, a collecting tank is arranged at the bottom end of the rack, the output shaft is connected with a transmission shaft through belt transmission, a worm wheel is fixedly sleeved on the outer wall of the other end of the transmission shaft, a worm is meshed with the outer wall of the worm wheel, a rotating shaft is fixedly connected to one end of the worm, a gear is fixedly sleeved on the outer wall of the rotating shaft, and a synchronous tooth strip is meshed with the outer wall of the gear;
and a shifting plate is arranged on one side of the collecting tank close to the flexible rubber roll, and the upper edge of the shifting plate is attached to the roll body of the flexible rubber roll.
In a further technical scheme, the doctor-bar device includes the installation piece, one side outer wall fixedly connected with electric putter of installation piece, the opposite side outer wall fixed mounting of installation piece has fixed scraper, the spout has all been seted up to the outer wall both sides of installation piece, the first spring of inside fixedly connected with of spout, the other end fixedly connected with of first spring removes the scraper.
In a further technical scheme, the movable scrapers are respectively positioned on two sides of the fixed scrapers, the movable scrapers are connected with the mounting block through sliding chutes, and the output end of the electric push rod is fixedly connected with the outer wall of the mounting block.
In a further technical scheme, the outer wall of the other side of the movable scraper is fixedly connected with a protruding block, and the protruding block is in contact with the outer wall of the baffle.
In a further technical scheme, the outer wall of the moving block is fixedly connected with the side wall of the baffle plate, the outer wall of the moving block is in threaded connection with a fixing screw, and the other end of the fixing screw is fixedly connected with the outer wall of the adjusting rod.
In a further technical scheme, the other end of the output shaft is fixedly connected with the inner wall of the rack, and the outer wall of the adjusting rod is provided with scale marks.
In a further technical scheme, a pull rod is connected inside the baffle in a sliding manner, a second spring is sleeved on the outer wall of the pull rod, a connecting block is fixedly connected to the bottom of the pull rod, and a cutting tool bit is fixedly connected to the outer wall of the connecting block;
one end of the second spring is fixedly connected with the outer wall of the baffle, the other end of the second spring is fixedly connected with the top end of the pull rod, and the cutting tool bit is located outside the baffle.
Compared with the prior art, the invention has the following technical effects:
1. in the technical scheme provided by the invention, the flexible rubber roller is arranged at the material feeding side of the scraping device, the flexible rubber roller can transfer away the part of the slurry sprayed on the pole piece, and the scraping device is used for scraping the pole piece to realize the coating function of low surface density, so that the coating function can be suitable for the coating requirement of the power type lithium battery pole piece;
2. according to the invention, the baffle plate is driven to move by the moving block, the scale marks on the adjusting rod facilitate observation of the moving distance, and then the fixing screws are screwed down to complete adjustment work of the adjusting rod, so that the battery pole piece can only work within a fixed range during coating.
3. According to the invention, the pull rod is driven to move downwards through the contraction of the second spring, the pull rod drives the cutting tool bit to move downwards through the connecting block, the cutting tool bit is in contact with the two sides of the battery pole piece, the cutting of the edge part of the battery pole piece is completed through the cutting tool bit, so that the cutting of the edge super-thick pole piece is realized, the cut waste material can fall on the bottom of the rack, meanwhile, when the cut pole piece enters an oven to be heated, the pole piece cannot be subjected to edge bulging and breakage due to too thick edge when being wound by a tail, the phenomenon of belt breakage is avoided, the failure rate in the production process is reduced, and the material utilization rate and the production efficiency are improved.
4. According to the invention, the outer wall of the baffle plate is in contact with the convex block to extrude the convex block, the convex block drives the movable scraper to move, so that the length of the movable scraper is adjusted, the pop-up length of the movable scraper is conveniently and flexibly adjusted, meanwhile, the electric push rod is started to drive the mounting block to move, the mounting block drives the fixed scraper and the movable scraper to move, so that the movable scraper and the fixed scraper can flexibly adjust the distances among the movable scraper, the fixed scraper and the coating roll according to the coating thickness of a battery pole piece, and further the coating thickness consistency of the battery pole piece is ensured.
5. According to the invention, the output shaft drives the transmission shaft to rotate through the belt, the transmission shaft drives the worm to rotate through the worm wheel, the worm drives the rotation shaft to rotate, the rotation shaft drives the synchronous rack strips to move through the gear, the synchronous rack strips convey and clean the chips falling in the collecting tank, the cleanness of coating equipment is ensured, meanwhile, the chips are conveniently recovered, and resources are further saved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic structural diagram illustrating a high-speed extrusion coating apparatus for a low-areal density lithium battery pole piece, according to an embodiment of the present invention;
fig. 2 is a partial schematic structure diagram of a part a in fig. 1.
FIG. 3 shows a cross-sectional view of a flexible rubber covered roller in the present invention;
fig. 4 shows a schematic view of the coating apparatus of fig. 1 from another perspective.
Fig. 5 is a partial structural diagram of fig. 4 at B.
Fig. 6 is a schematic structural diagram illustrating a baffle plate of a high-speed extrusion coating apparatus for a low-areal density lithium battery pole piece provided in accordance with an embodiment of the present invention.
Fig. 7 is a partial structural view at C in fig. 6.
Fig. 8 is a front view of a baffle plate of a high-speed extrusion coating device for a low-areal density lithium battery pole piece, which is provided according to an embodiment of the invention.
Fig. 9 is a partial structural view at D in fig. 8.
FIG. 10 is a top view of a blade device of a high-speed extrusion coating apparatus for low-areal density lithium battery pole piece provided according to an embodiment of the invention.
FIG. 11 is a top view of a doctor blade device of a high-speed extrusion coating apparatus for a low-areal density lithium battery pole piece, according to an embodiment of the invention; at this time, the movable blade is moved to both sides.
Fig. 12 is a side view of a doctor blade device of a high-speed extrusion coating device for a low-areal density lithium battery pole piece, according to an embodiment of the invention.
The reference numbers in the figures illustrate: 1. a frame; 2. a motor; 3. an output shaft; 4. a coating roll; 5. adjusting a rod; 6. a drive shaft; 7. a blade device; 701. mounting blocks; 702. moving the scraper; 703. a bump; 704. fixing a scraper; 705. an electric push rod; 706. a chute; 707. a first spring; 71. a flexible rubber roller; 711. a material containing groove; 8. a baffle plate; 9. a moving block; 10. a set screw; 11. mounting grooves; 12. a coating nozzle; 13. collecting tank; 131. pulling a plate; 14. a worm gear; 15. a worm; 16. a rotating shaft; 17. a gear; 18. a synchronous cog belt; 19. a limiting plate; 20. a pull rod; 21. a second spring; 22. connecting blocks; 23. a cutting head.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further clarified by combining the specific drawings.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," and the like are for purposes of illustration only and are not intended to represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As described above, with reference to fig. 1 to 12, the present invention provides a high-speed extrusion coating apparatus for a low surface density lithium battery pole piece, which includes a frame 1, wherein a mounting groove 11 is formed at a bottom end of the frame 1, and a coating nozzle 12 is fixedly mounted inside the mounting groove 11;
the automatic coating machine is characterized in that a motor 2 is arranged outside the frame 1, an output shaft 3 is fixedly sleeved at the output end of the motor 2, a coating roller 4 is fixedly sleeved on the outer wall of the output shaft 3, a baffle 8 is sleeved on the outer wall of the coating roller 4, an adjusting rod 5 is fixedly connected to the inner wall of the frame 1, a moving block 9 is slidably connected to the outer wall of the adjusting rod 5, a scraping device 7 is fixedly mounted on the left side of the frame 1, a flexible rubber roller 71 is arranged on the incoming material side of the scraping device 7, a material accommodating groove 711 is formed in the roller surface of the flexible rubber roller 71, the roller body of the flexible rubber roller 71 abuts against a pole piece attached to the coating roller 4, and the roller body of one side, far away from the coating roller 4, of the flexible rubber roller 71 abuts against the bottom end of the frame 1.
In the invention, the flexible rubber roller 71 is attached to the pole piece on the coating roller 4, so that the flexible rubber roller can rotate under the driving of the power of the coating roller 4 to suck away the slurry coated on the pole piece regularly, then a distribution state that a part of the slurry is distributed in a small quantity is formed on the surface of the pole piece, and then the coating function of low surface density is realized by scraping the cloud through the scraping device 7.
As a preferred embodiment, the flexible rubber roller 71 may be separately provided with a driving mechanism for driving, that is, one end of the flexible rubber roller 71 is provided with a driving mechanism for driving the flexible rubber roller to rotate, and the rotation direction of the flexible rubber roller 71 is opposite to the rotation direction of the coating roller 4. More specifically, in the present invention, two ends of the flexible rubber roller 71 are rotatably disposed on the frame 1 through the bracket, and the driving connection between the driving mechanism and the end of the flexible rubber roller 71 may also be a driving connection structure known to those skilled in the art, which is not described herein again.
Further, in the present invention, the material accommodating groove 711 extends along the length direction of the flexible rubber covered roller 71, and the material accommodating groove 711 is provided with a plurality of material accommodating grooves and is uniformly arranged along the circumferential surface of the flexible rubber covered roller 71 at intervals. When the flexible rubber roller 71 rotates, the surface of the roller body abuts against the pole piece passing through the coating roller 4, and then part of slurry on the pole piece is transferred to the material accommodating groove 711, so that the amount of the slurry on the pole piece is reduced, and then the slurry is uniformly scraped through the scraping device 7, so that the coating with low surface density is realized.
In the invention, a collecting tank 13 is arranged at the bottom end of a frame 1, the output shaft 3 is connected with a transmission shaft 6 through belt transmission, a worm wheel 14 is fixedly sleeved on the outer wall of the other end of the transmission shaft 6, a worm 15 is meshed with the outer wall of the worm wheel 14, one end of the worm 15 is fixedly connected with a rotating shaft 16, a gear 17 is fixedly sleeved on the outer wall of the rotating shaft 16, and a synchronous rack 18 is meshed with the outer wall of the gear 17;
one side of the collecting tank 13, which is close to the flexible rubber roller 71, is provided with a shifting plate 131, and the upper edge of the shifting plate 131 is abutted to the roller body of the flexible rubber roller 71.
In the invention, the scraping device 7 is used for scraping slurry uniformly coated on a pole piece and scraping off redundant slurry, as a specific embodiment of the scraping device 7, the scraping device 7 includes an installation block 701, an electric push rod 705 is fixedly connected to an outer wall of one side of the installation block 701, a fixed scraper 704 is fixedly installed on an outer wall of the other side of the installation block 701, sliding grooves 706 are respectively formed in two sides of the outer wall of the installation block 701, a first spring 707 is fixedly connected to the inside of the sliding groove 706, and a movable scraper 702 is fixedly connected to the other end of the first spring 707.
Further, the movable scrapers 702 are respectively located at two sides of the fixed scrapers 704, the movable scrapers 702 are slidably connected with the mounting block 701 through the sliding grooves 706, and the output end of the electric push rod 705 is fixedly connected with the outer wall of the mounting block 701.
Further, the other side outer wall of the movable scraper 702 is fixedly connected with a bump 703, and the bump 703 is in contact with the outer wall of the baffle 8.
In the invention, the outer wall of the moving block 9 is fixedly connected with the side wall of the baffle plate 8, the outer wall of the moving block 9 is in threaded connection with a fixing screw 10, and the other end of the fixing screw 10 is fixedly connected with the outer wall of the adjusting rod 5.
The other end of the output shaft 3 is fixedly connected with the inner wall of the frame 1, and the outer wall of the adjusting rod 5 is provided with scale marks.
A pull rod 20 is connected to the inside of the baffle 8 in a sliding manner, a second spring 21 is sleeved on the outer wall of the pull rod 20, a connecting block 22 is fixedly connected to the bottom of the pull rod 20, and a cutting tool bit 23 is fixedly connected to the outer wall of the connecting block 22;
one end of the second spring 21 is fixedly connected with the outer wall of the baffle plate 8, the other end of the second spring 21 is fixedly connected with the top end of the pull rod 20, and the cutting head 23 is positioned outside the baffle plate 8.
In the invention, the synchronous rack belt 18 is positioned inside the collecting tank 13, two rotating shafts 16 and two gears 17 are provided, and the two rotating shafts 16 are connected by a belt in a transmission way.
The two sides of the outer wall of the synchronous rack belt 18 are both fixedly connected with limiting plates 19, and the limiting plates 19 are made of soft materials.
When the coating equipment provided by the invention is used specifically, a worker penetrates a battery pole piece to be coated through the coating roller 4, the flexible rubber covered roller 71 at the moment is abutted against the pole piece on the coating roller 4, the position of the baffle plate 8 is adjusted according to the actual size of the required battery pole piece, the fixing screw 10 is loosened, the moving block 9 is moved, the baffle plate 8 is driven by the moving block 9 to move, the scale mark on the adjusting rod 5 is convenient for observing the moving distance, then the fixing screw 10 is screwed, the adjustment work of the adjusting rod 5 is completed, and the battery pole piece is only operated in a fixed range during coating;
the structure and process are described with reference to FIGS. 1-3.
Meanwhile, under the action of a second spring 21, the second spring 21 contracts to drive a pull rod 20 to move downwards, the pull rod 20 drives a cutting tool bit 23 to move downwards through a connecting block 22, the cutting tool bit 23 is in contact with two sides of a battery pole piece, and the cutting of the edge part of the battery pole piece is completed through the cutting tool bit 23, so that the cutting of the edge super-thick pole piece is realized, cut waste materials can fall on the bottom of the rack 1, and meanwhile, when the cut pole piece enters an oven to be heated, the pole piece cannot be subjected to edge bulging and breakage due to too thick edge when being rolled by a tail, so that the strip breakage phenomenon is avoided, the failure rate in the production process is reduced, and the material utilization rate and the production efficiency are improved;
please refer to fig. 6-9 for the above structure and process.
Starting the motor 2, driving the output shaft 3 to rotate by the motor 2, driving the coating roller 4 to rotate by the output shaft 3, and extruding and coating the battery pole piece by the coating nozzle 12;
meanwhile, the outer wall of the baffle 8 is in contact with the bump 703 to extrude the bump 703, the bump 703 drives the movable scraper 702 to move, so that the length of the movable scraper 702 is adjusted, the pop-up length of the movable scraper 702 is conveniently and flexibly adjusted, the electric push rod 705 is started, the electric push rod 705 drives the mounting block 701 to move, the mounting block 701 drives the fixed scraper 704 and the movable scraper 702 to move, the movable scraper 702 and the fixed scraper 704 can flexibly adjust the distance between the movable scraper 702 and the fixed scraper 704 and the coating roller 4 according to the thickness of the coating layer of the battery pole piece, and the coating thickness consistency of the battery pole piece is further ensured;
the above structure and process are shown in FIGS. 1-12.
Simultaneously, the piece that the doctor-bar produced can drop the upper surface of the synchronous rack of sword belt 18, output shaft 3 drives transmission shaft 6 through the belt simultaneously and rotates, transmission shaft 6 drives worm 15 through worm wheel 14 and rotates, worm 15 drives axis of rotation 16 and rotates, axis of rotation 16 drives synchronous rack belt 18 through gear 17 and removes, synchronous rack belt 18 carries the clearance to the piece of whereabouts in collecting vat 13, guarantee coating equipment's cleanliness factor, also conveniently to clastic recovery simultaneously, further practiced thrift the resource.
Please refer to fig. 1-5 for the above structure and process.
The foregoing shows and describes the general principles, principal features, and aspects of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The high-speed extrusion type coating equipment for the low-areal density lithium battery pole piece is characterized by comprising a rack (1), wherein the bottom end of the rack (1) is provided with a mounting groove (11), and a coating nozzle (12) is fixedly mounted inside the mounting groove (11);
the automatic coating machine is characterized in that a motor (2) is arranged outside the frame (1), an output end of the motor (2) is fixedly sleeved with an output shaft (3), the outer wall of the output shaft (3) is fixedly sleeved with a coating roller (4), the outer wall of the coating roller (4) is sleeved with a baffle (8), the inner wall of the frame (1) is fixedly connected with an adjusting rod (5), the outer wall of the adjusting rod (5) is connected with a moving block (9) in a sliding manner, a scraping device (7) is fixedly installed on the left side of the frame (1), a flexible rubber roller (71) is arranged on the incoming material side of the scraping device (7), a material accommodating groove (711) is formed in the roller surface of the flexible rubber roller (71), the roller body of the flexible rubber roller (71) abuts against a pole piece attached to the coating roller (4), and the roller body of one side, far away from the coating roller (4), of the flexible rubber roller (71) abuts against the bottom end of the frame (1);
the scraping device (7) comprises an installation block (701), an electric push rod (705) is fixedly connected to the outer wall of one side of the installation block (701), a fixed scraper (704) is fixedly installed on the outer wall of the other side of the installation block (701), sliding grooves (706) are formed in two sides of the outer wall of the installation block (701), a first spring (707) is fixedly connected to the inside of each sliding groove (706), and a movable scraper (702) is fixedly connected to the other end of each first spring (707);
the movable scrapers (702) are respectively positioned at two sides of the fixed scrapers (704), the movable scrapers (702) are in sliding connection with the mounting block (701) through sliding chutes (706), and the output end of the electric push rod (705) is fixedly connected with the outer wall of the mounting block (701);
one end of the movable scraper (702) far away from the first spring (707) is fixedly connected with a bump (703), and the bump (703) is in contact with the outer wall of the baffle (8);
a pull rod (20) is connected to the inner portion of the baffle (8) in a sliding mode, a second spring (21) is sleeved on the outer wall of the pull rod (20), a connecting block (22) is fixedly connected to the bottom of the pull rod (20), and a cutting tool bit (23) is fixedly connected to the outer wall of the connecting block (22);
one end of the second spring (21) is fixedly connected with the outer wall of the baffle (8), the other end of the second spring (21) is fixedly connected with the top end of the pull rod (20), and the cutting knife head (23) is located outside the baffle (8).
2. The high-speed extrusion coating equipment for the low-areal density lithium battery pole pieces, as claimed in claim 1, is characterized in that one end of the flexible rubber roller (71) is provided with a driving mechanism for driving the flexible rubber roller (71) to rotate, and the rotation direction of the flexible rubber roller (71) is opposite to the rotation direction of the coating roller (4).
3. The high-speed extrusion coating equipment for the low-areal density lithium battery pole pieces according to claim 1, wherein the material accommodating groove (711) is arranged in a manner of extending along the roller length direction of the flexible rubber roller (71), and the material accommodating groove (711) is provided with a plurality of material accommodating grooves and is uniformly arranged at intervals along the circumferential surface of the flexible rubber roller (71).
4. The high-speed extrusion coating equipment for the low-areal density lithium battery pole pieces according to claim 1, wherein a collecting tank (13) is arranged at the bottom end of the frame (1), the output shaft (3) is connected with a transmission shaft (6) through a belt transmission, a worm wheel (14) is fixedly sleeved on the outer wall of the other end of the transmission shaft (6), a worm (15) is meshed with the outer wall of the worm wheel (14), a rotating shaft (16) is fixedly connected with one end of the worm (15), a gear (17) is fixedly sleeved on the outer wall of the rotating shaft (16), and a synchronous rack belt (18) is meshed with the outer wall of the gear (17);
one side of the collecting tank (13) close to the flexible rubber roller (71) is provided with a shifting plate (131), and the upper edge of the shifting plate (131) is attached to the roller body of the flexible rubber roller (71).
5. The high-speed extrusion coating equipment for the lithium battery pole pieces with low areal density as claimed in claim 1, wherein the outer wall of the moving block (9) is fixedly connected with the side wall of the baffle plate (8), the outer wall of the moving block (9) is in threaded connection with a fixing screw (10), and the other end of the fixing screw (10) is fixedly connected with the outer wall of the adjusting rod (5).
6. The high-speed extrusion coating equipment for the low-areal density lithium battery pole pieces, as claimed in claim 1, is characterized in that the other end of the output shaft (3) is fixedly connected with the inner wall of the frame (1), and the outer wall of the adjusting rod (5) is provided with scale marks.
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| CN202110943285.2A CN113828478B (en) | 2021-08-17 | 2021-08-17 | Low-surface-density high-speed extrusion type coating equipment for lithium battery pole piece |
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| CN202110943285.2A CN113828478B (en) | 2021-08-17 | 2021-08-17 | Low-surface-density high-speed extrusion type coating equipment for lithium battery pole piece |
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| CN113828478B true CN113828478B (en) | 2023-01-03 |
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