CN116513846A - Unreeling and tape-connecting method and unreeling and tape-connecting equipment for lithium battery current collector - Google Patents
Unreeling and tape-connecting method and unreeling and tape-connecting equipment for lithium battery current collector Download PDFInfo
- Publication number
- CN116513846A CN116513846A CN202310602481.2A CN202310602481A CN116513846A CN 116513846 A CN116513846 A CN 116513846A CN 202310602481 A CN202310602481 A CN 202310602481A CN 116513846 A CN116513846 A CN 116513846A
- Authority
- CN
- China
- Prior art keywords
- material roll
- unreeling
- roll
- traction
- tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 368
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 239000012943 hotmelt Substances 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims description 60
- 230000008018 melting Effects 0.000 claims description 60
- 238000010030 laminating Methods 0.000 claims description 45
- 238000001816 cooling Methods 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 29
- 238000004804 winding Methods 0.000 claims description 21
- 238000001179 sorption measurement Methods 0.000 claims description 19
- 238000012937 correction Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 230000009471 action Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 241001061132 Eutaeniophorus sp. 033-Miya Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000008207 working material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- H01M4/64—Carriers or collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/102—Preparing the leading end of the replacement web before splicing operation; Adhesive arrangements on leading end of replacement web; Tabs and adhesive tapes for splicing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
- B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
- B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/20—Cutting-off the expiring web
-
- 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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a method and equipment for unreeling and splicing a lithium battery current collector. The unreeling and tape-connecting method for the lithium battery current collector adopts a hot melt welding mode to realize the tape-connecting of new and old material tapes, has high tape-connecting strength and good stability, and effectively improves the production quality of the lithium battery pole piece. The lithium battery current collector unreeling and receiving equipment comprises an unreeling unit, a triaxial traction deviation correcting system, a receiving and breaking system, a station switching system, a tension matching system and a control logic system, wherein the receiving and breaking system is arranged on the unreeling discharging side of the unreeling unit along the advancing direction of an unreeling material belt; the triaxial traction deviation correcting system is arranged between the unreeling discharging side of the unreeling unit and the feeding side of the tape receiving and breaking system; the triaxial traction deviation correcting system comprises a traction head and a traction driving assembly, and the traction driving assembly is in transmission connection with the traction head and drives the traction head to move. The lithium battery current collector unreeling and taping device can realize high-efficiency, high-stability and high-strength automatic taping.
Description
Technical Field
The invention relates to the technical field of lithium battery pole piece production and processing equipment, in particular to a lithium battery current collector unreeling and taping method and unreeling and taping equipment.
Background
In the production process of the lithium battery pole piece, continuous production of the unreeling material belt in unreeling operations such as coating and the like can be realized through the belt connection, and the non-stop operation of subsequent procedures is realized so as to ensure high production efficiency.
The unwinding mechanism of current lithium cell pole piece coating machine is automated guided transporting vehicle (AGV) or manual transportation singly rolls up the mass flow body and places in unwinding unit department on one side of unwinding device's capstan head, by the manual bonding sticky tape, then the capstan head rotates, make swing arm device rise to waiting position, after receiving the tape signal, unwinding unit starts rotatory matching linear velocity, downside swing arm roller is to the material area lift pressfitting of using up in new roll sticky tape department completion automatic bonding through the cylinder action, the cutter is accomplished and is cut the area simultaneously, new roll is in normal operating condition this moment, the tailing is rolled up along with AGV or manual extraction. The method and the corresponding equipment are general process flows and general equipment in the field of lithium battery automation, and the connection before and after the action is relatively stable, but the method and the corresponding equipment have the defects that manual tape application is needed, the labor cost is high, the consumption cost is high and the hidden danger of tape breakage exists; moreover, the adhesive tape can affect the service life of the cutter and the quality of the cut during subsequent cutting; in addition, the problems of complex structure, high control difficulty, high manufacturing cost and the like are also existed.
Disclosure of Invention
The invention aims to solve the problems of high cost, easiness in breakage and easiness in reduction of production quality of pole pieces of the existing lithium battery pole piece unreeling and taping equipment, and provides a lithium battery current collector unreeling and taping method. The unreeling and splicing method realizes splicing of the new and old material strips in a hot melt welding mode, has high splicing strength and good stability, and effectively improves the production quality of the lithium battery pole pieces.
The invention further aims to provide the unreeling and taping device for the lithium battery current collector. The unreeling and tape-connecting device is provided with the traction deviation correcting system and the instant hot melting device in sequence along the feeding direction at the discharging side of the unreeling system, so that high-efficiency, high-stability and high-strength automatic tape-connecting can be realized.
The aim of the invention is achieved by the following technical scheme.
A method for unreeling and taping a lithium battery current collector comprises the following steps:
s1, unreeling a material roll A and a material roll B in sequence by at least two unreeling units respectively;
s2, working an old material roll A, and waiting a new material roll B
The traction deviation correcting system of the corresponding material roll A is positioned at a zero position to wait for a new roll A, the traction deviation correcting system of the corresponding material roll B is positioned at an adsorption traction position to capture and adsorb a new roll head which automatically falls down from an unreeling unit of the corresponding material roll B through an electrostatic suction head, a pressing roller of the corresponding material roll A is positioned at a working position to enable tension to be uniformly distributed when the material roll A works, the pressing roller of the corresponding material roll B is positioned at a zero position to avoid the working range of the material roll A, a station switching system is positioned at the position corresponding to the material roll B to prepare for the old belt of the material roll A and the receiving belt of the roll B, a corresponding material roll cutter is positioned at the zero position to wait for a belt breaking operation, a corresponding material roll B is positioned at the zero position to avoid the working range of the material roll A, and a tension matching system is positioned at the working position to release tension of the material roll A in a working state and maintain stable tension adjustment capacity in the working state of the material roll A;
S3, carrying out new rolling connection tape of the material A roll old roll and the material B roll
The traction deviation correcting system corresponding to the A material roll keeps unchanged, the traction deviation correcting system corresponding to the B material roll carries out online deviation correction alignment on the new tape head of the B material roll so as to align the new tape head of the B material roll with the old tape head of the A material roll, the new tape head of the A material roll is combined with the corresponding unwinding unit to automatically draw the new tape head of the B material roll to an adsorption waiting position, the laminating roller corresponding to the A material roll keeps unchanged, the laminating roller corresponding to the B material roll stretches out to a tape receiving position to jointly convey the new tape head of the B material roll and the old tape head of the A material roll in work to a station switching system, the station switching system provides instant hot melting for the old tape of the A material roll and the old tape head of the B material roll, the cutter corresponding to the A material roll stretches out to the working position to cut off the tail of the old tape of the A material roll, the cutter corresponding to keep unchanged, and the tension matching system stretches out to the tape receiving position so that the new tape of the B material roll enters the working state, and enough tension adjustment space is available;
s4, waiting for new rolls of the material roll A and working for old rolls of the material roll B
The traction deviation correcting system corresponding to the A material roll is positioned at an adsorption traction position to capture and adsorb a new tape head which automatically falls down from the corresponding A material roll unreeling unit through an electrostatic suction head, the traction deviation correcting system corresponding to the B material roll returns to a zero position to enter a next roll changing period, the pressing roller corresponding to the A material roll returns to the zero position to avoid the working range of the B material roll, the pressing roller corresponding to the B material roll extends to a working position to enable tension to be uniformly distributed when the B material roll works, the station switching system changes to the position corresponding to the A material roll so as to prepare for the old tape of the B material roll and the tape head of the A material roll, the cutter corresponding to the A material roll returns to the zero position to avoid the working range of the B material roll to enter the next tape breaking period, the cutter corresponding to the B material roll remains unchanged, and the tension matching system returns to the working position to release the tension of the B material roll in the working state and maintain stable tension adjustment capacity in the working state of the B material roll;
S5, carrying out old roll splicing tape of the new roll of the material roll A and the material roll B
The traction deviation correcting system corresponding to the A material roll performs online deviation correcting alignment on the new winding head of the A material roll to align with the old winding head of the B material roll and combines the autorotation traction of the unreeling unit to the adsorption waiting position, the traction deviation correcting system corresponding to the B material roll is kept unchanged, the laminating roller corresponding to the A material roll stretches out to the belt receiving position to jointly convey the new winding head of the A material roll in the adsorption waiting position and the old winding head of the B material roll in work to the station switching system, the laminating roller corresponding to the B material roll is kept unchanged, the station switching system provides instant hot melting for the old winding head of the B material roll and the A material roll, the cutter corresponding to the A material roll is kept unchanged, the cutter corresponding to the B material roll stretches out to the working position to cut off the tail of the old winding of the B material roll, and the tension matching system stretches out to the belt receiving position to enable the new winding of the A material roll to enter the working state, so that a sufficient tension adjustment space is available;
s6, working an old material roll A, and waiting a new material roll B
The traction deviation correcting system of the corresponding material roll A returns to a zero position to enter a next roll changing period, the traction deviation correcting system of the corresponding material roll B extends to an adsorption traction position to capture and adsorb a new roll winding head automatically fallen from an unreeling unit of the corresponding material roll B through an electrostatic suction head, a laminating roller of the corresponding material roll A extends to a working position to enable tension distribution to be more uniform when the material roll A works, the laminating roller of the corresponding material roll B returns to a zero position to avoid the working range of the material roll A, a station switching system changes to a position corresponding to the material roll B to prepare for the old roll of the material roll A and the roll head of the material roll B, a cutter of the corresponding material roll A remains unchanged, the cutter of the corresponding material roll B returns to the zero position to avoid the working range of the material roll B to enter a next roll breaking period, and the tension matching system returns to the working position to release tension of the material roll A in the working state and maintain stable tension adjustment capacity in the working state of the material roll A;
S7, reciprocating circulation S3-S6, and automatic unreeling and taping are achieved.
In a preferred embodiment, the combined material belt after welding in S3 and S5 is cooled by air.
A lithium battery current collector unreeling and taping device comprising:
at least two unreeling units, wherein the unreeling units are provided with unreeling shafts which are independent from each other;
the strip receiving and breaking system is arranged on the discharging side of the unreeling unit along the advancing direction of the unreeling material strip; the tape splicing and tape breaking system comprises a cutter assembly and a tape splicing feeding roller assembly;
the station switching system is arranged on the discharging side of the strip receiving and breaking system along the advancing direction of the unreeling material strip; the station switching system comprises an instantaneous hot melting device which can be movably switched to correspond to at least two unreeling units respectively;
at least two groups of triaxial traction correction systems corresponding to at least two unreeling shafts are arranged between the unreeling discharging side of the unreeling unit and the feeding side of the station switching system along the advancing direction of the unreeling material belt; the three-axis traction deviation correcting system comprises a traction head and a traction driving assembly, wherein the traction driving assembly is in transmission connection with the traction head and drives the traction head to move;
the tension matching system is arranged on the discharging side of the station switching system;
And the control logic system is used for controlling the automatic unreeling and splicing of the tape by a program.
In a preferred embodiment, the unreeling shaft is arranged on the positioning mounting plate and is driven by the avoidance driving piece to stretch and retract relative to the positioning mounting plate.
In a preferred embodiment, the traction head comprises an electrostatic suction head.
In a preferred embodiment, the traction drive assembly includes an X-axis drive, a Y-axis drive, and a Z-axis drive;
the traction head is connected to the output end of the Y-axis driving piece and driven by the Y-axis driving piece to move in a telescopic way in the Y-axis direction; the Y-axis driving piece is arranged on the X-axis track in a sliding way, and is driven by the X-axis driving piece to slide and move in the X-axis direction; the X-axis driving piece is arranged on the Z-axis track in a sliding mode, and the Z-axis driving piece drives the X-axis driving piece to slide and move in the Z-axis direction.
In a preferred embodiment, the cutter assembly is disposed between the tri-axial traction deviation correcting system and the feed side of the instant hot melt apparatus along the advancing direction of the unreeling material strip;
the cutter assembly comprises at least two groups corresponding to at least two unreeling shafts; the cutter assembly comprises a cutter and a cutter driving piece which is in transmission connection with the cutter to drive the cutter to move and cut.
In a preferred embodiment, the lithium battery current collector unreeling and taping device of any one of the above, the taping feed roller assembly is disposed near the feed side of the instant hot melt apparatus; the receiving feeding roller assembly comprises a first pressing roller and a second pressing roller which are oppositely arranged, and the first pressing roller and the second pressing roller can move close to each other or move away from each other.
In a preferred embodiment, the unreeling and taping device of the lithium battery current collector of any one of the above embodiments, wherein a cooling air knife device is arranged on the discharging side of the instant hot melting device, and the cooling air knife device comprises a first air knife and a second air knife which are oppositely arranged.
In a preferred embodiment, the lithium battery current collector unreeling and taping device of any one of the above embodiments, wherein a tension roller assembly is arranged on the discharging side of the instant hot melting device, and the tension roller assembly comprises a tension roller and a tension roller driving member for driving the tension roller to stretch and move.
In a further preferred embodiment, a pass roller is provided between the discharge side of the instant hot melt device and the feed side of the tension roller assembly.
In a preferred embodiment, the lithium battery current collector unreeling and taping device of any one of the above-mentioned embodiments, wherein the instant hot melting device is slidably arranged on a station switching track, and can slide and move on the station switching track.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the unreeling and tape-connecting method for the lithium battery current collector, the tape-connecting method for new and old material tapes is realized by adopting a hot melt welding mode, the traditional tape-connecting mode of sticking the adhesive tape is abandoned, the tape-connecting strength and stability are ensured, and the production quality of the lithium battery pole piece is improved. And moreover, the air cooling is performed after welding, so that the conditions of breakage and stretching deformation of the current collector can be avoided, and the production quality of the lithium battery pole piece is further ensured.
According to the lithium battery current collector unreeling and ribbon-connecting equipment, the triaxial traction deviation correcting system and the instant hot melting device are sequentially arranged on the discharging side of the unreeling unit along the feeding direction, when the ribbon is connected, the triaxial traction deviation correcting system is used for accurately correcting and aligning new and old ribbons and traction and feeding the new and old ribbons to the instant hot melting device, and the instant hot melting device is used for realizing ribbon connection in a fusion mode. Thereby, can realize accurate automatic tape connection control, and heat fusion area stability is good, with low costs, efficient, with the adhesion between the substrate of material joint area no impurity, guarantee to connect area intensity and stability, avoid broken area and sticky tape to damage cutting equipment, influence the problem of cutting the quality, guarantee the production quality of lithium cell pole piece.
Moreover, the instantaneous hot melting device is arranged on the station switching track in a sliding way, and the feeding side of the instantaneous hot melting device is provided with the strip receiving feeding passing roller capable of moving along with station switching, so that the stations of the instantaneous hot melting device when different unreeling shafts are unreeled can be conveniently and correspondingly switched, and the strip receiving stability and unreeling smoothness are ensured.
In addition, the discharging side of the instant hot melting device is provided with a cooling air knife device, air cooling can be applied to the material belt after instant welding, so that the strength of the material belt after belt connection is timely improved, the tensile deformation of the material belt in a molten state after belt connection is effectively avoided, the belt connection strength and stability are ensured, and the production quality of the lithium battery pole pieces is further ensured. The unreeling shaft of the unreeling unit adopts a telescopic avoidance structure design, and the arrangement of a turret is abandoned, so that the cost of equipment can be reduced.
The lithium battery current collector unreeling and receiving equipment is an automatic unreeling and receiving system consisting of a triaxial traction deviation correcting system, a receiving and breaking system, a station switching system, a tension matching system, an unreeling unit and a rack assembly, and is reasonable in space layout, compact in structure and ingenious in control method.
Drawings
Fig. 1 is a schematic structural view of an unreeling and taping device for a lithium battery current collector in a taping state according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the unreeling unit;
FIG. 3 is a schematic top view of a three-axis traction correction system;
FIG. 4 is a schematic diagram of a front view of a three-axis traction correction system;
FIG. 5 is a schematic diagram of a three-axis traction correction system in different operating conditions;
FIG. 6 is a schematic view of the take-up feed roller assembly in an operative configuration;
FIG. 7 is a schematic view of the structure of the tape splicing and breaking system in different operating states;
FIG. 8 is a schematic diagram of a station switching system;
FIG. 9 is a schematic diagram of a station switching system in different operating states;
FIG. 10 is a schematic diagram of the tension matching system in different operating conditions;
fig. 11 is a flowchart illustrating the procedure of unreeling the connecting tape of the lithium battery current collector according to the present invention in a specific embodiment;
FIG. 12 is a schematic view of the structure of the tape-receiving state of the end unreeling of the material roll A and the access unreeling of the material roll B in the specific embodiment;
FIG. 13 is a schematic view of a structure of a B roll in an unreeling operation state in an embodiment;
FIG. 14 is a schematic view showing the structure of the tape-receiving state of the B roll ending unreeling and the A roll being inserted into unreeling in the specific embodiment;
fig. 15 is a schematic structural diagram of an unwinding operation of a roll a in an embodiment.
The drawings are marked: the device comprises a 1-positioning mounting plate, a 2-unreeling unit, a 21-unreeling shaft, a 22-unreeling driving piece, a 23-avoidance driving piece, a 24-air inlet channel, a 3-three-shaft traction deviation correcting system, a 31-traction head, a 32-X shaft track, a 33-X shaft driving piece, a 34-Y shaft driving piece, a 35-Z shaft track, a 4-cutter assembly, a 41-cutter, a 42-cutter driving piece, a 5-ribbon feeding roller assembly, a 51-first laminating roller, a 52-first laminating roller driving piece, a 53-second laminating roller, a 54-second laminating roller driving piece, a 6-instantaneous hot melting device, a 7-cooling air knife device, a 71-first air knife, a 72-second air knife, an 8-base, a 9-slider, a 10-station switching bracket, a 11-roller, a 12-tension roller assembly, a 121-tension roller, a 122-tension roller driving piece and a 13-current collector.
Detailed Description
The technical scheme of the present invention is described in further detail below with reference to specific examples and drawings, but the scope and embodiments of the present invention are not limited thereto.
In the description of the specific embodiments, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in place when the inventive product is used, and terms such as "first", "second", etc., are merely for convenience in describing the present invention and for simplifying the description, rather than indicating or implying that the structure or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention, but rather as indicating or implying relative importance.
Unless specifically stated or limited otherwise, the terms "mounted," "configured," "connected," "secured," and the like should be construed broadly, as they may be either fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
The invention relates to a lithium battery current collector unreeling and taping device, as shown in fig. 1, which comprises an unreeling system, a triaxial traction deviation correcting system, a taping and taping breaking system, a station switching system, a tension matching system and a rack assembly, wherein the station switching system comprises an instantaneous hot melting device 6.
The unreeling system comprises a plurality of unreeling units 2 which are independent of each other, such as at least two unreeling units which are independent of each other, specifically can be two unreeling units which are arranged independently left and right, and each independent unreeling unit 2 can independently unreel the current collector material roll. When the unreeling machine works, one unreeling unit 2 is in an unreeling working state, at least one unreeling unit 2 is in a material preparation state, when the unreeling unit 2 before the unreeling unit is about to finish unreeling, a new material strip unreeled by the unreeling unit 2 after the material preparation and an old material strip unreeled by the unreeling unit 2 before the unreeling unit are connected, and unreeled by the unreeling unit 2 before the unreeled material strip is fed into the unreeling of the new material roll, so that continuous unreeling production is realized.
In particular, the unreeling unit 2 comprises an unreeling shaft 21, which unreeling shaft 21 is optional but not limited to an inflatable shaft, provided with an air inlet channel 24 to inflate to realize inflatable clamping of the material roll; furthermore, an unwind drive 22 is provided to drive the unwind shaft 21 for unwinding rotation, which unwind drive 22 is optionally but not limited to a servo motor. In a preferred embodiment, referring to fig. 2, the frame assembly includes a positioning mounting plate 1, an unwinding shaft 21 is disposed on the positioning mounting plate 1, and specifically, the unwinding shaft is disposed on the positioning mounting plate 1 in a manner of being capable of sliding in a telescopic manner along a thickness direction of the positioning mounting plate 1, and is driven by a avoidance driving member 23 to move in a telescopic manner relative to the positioning mounting plate 1, so as to clamp a coil and unwind the coil when the coil is unwound, and the unwinding shaft can retract backwards relative to the positioning mounting plate 1 when the coil is stopped, thereby avoiding feeding interference, and discarding a turret, so that the equipment cost and complexity are reduced.
Optionally, the avoidance driving piece 23 is an optional but not limited to pneumatic telescopic shaft, and the positioning mounting plate 1 is provided with a guide rail extending back and forth, and the pneumatic telescopic shaft is in transmission connection with the unreeling unit 2 and drives the unreeling unit 2 to stretch back and forth.
The instant hot melting device 6 is optional but not limited to a hot melting machine, is specifically arranged on the unreeling discharging side of the unreeling system along the advancing direction of the unreeling material belt, can adaptively match heating power according to the collecting size, the material characteristics and the production line speed of the current collector, realizes the instant hot melting function of the current collector in the conveying process without stopping, has no other additional adhesive materials in the same material hot melting mode, and has high connection strength. In the embodiment shown, a plurality of unreeling units 2 are arranged above the instant hot melting device 6 from left to right, and during unreeling operation, the unreeled material belt is fed from top to bottom, and the material belt passes through the instant hot melting device 6 below during belt splicing.
When the unreeling and taping operation of the current collector 13 is carried out, when the unreeling unit 2 before the unreeling unit 2 just finishes unreeling of the material A, the new material tape of the material B unreeled by the unreeled unit 2 passes through the instant hot melting device 6 together with the old material tape of the material A unreeled by the unreeled unit 2 after matching the linear speed, the instant hot melting device 6 carries out hot melting to weld, and then the tail material of the old material tape of the material A is cut off and the unreeled new material of the material B is fed. The adhesion between the base materials of the same material connecting belt is free of impurities, the strength and stability of the connecting belt are guaranteed, the problems that the cutting equipment is damaged by the broken belt and the adhesive tape, and the cutting quality is affected are avoided, and the production quality of the lithium battery pole piece is guaranteed.
In a preferred embodiment, a three-axis traction correction system 3 is provided between the unreeling discharge side of the unreeling system and the feeding side of the instant hot melt device 6 in the unreeling strip advancing direction. The triaxial traction deviation correcting systems 3 are set into a plurality of groups, the triaxial traction deviation correcting systems 3 of the plurality of groups are in one-to-one correspondence with the unreeling units 2, for example, the triaxial traction deviation correcting systems 3 are set to comprise at least two groups corresponding to at least two unreeling shafts 21, and can be specifically two groups which are arranged left and right and are oppositely arranged, the corresponding triaxial traction deviation correcting systems 3 can carry out traction deviation correction on the material strips unreeled by the corresponding unreeling units 2, so that new material strips and old material strips in strip connection are aligned, and the unreeled material strips are aligned to enter the instant hot melting device 6.
Specifically, the triaxial traction deviation correcting system 3 includes a traction head 31 and a traction driving assembly, where the traction head 31 is optionally but not limited to an electrostatic suction head or a vacuum suction head, preferably an electrostatic suction head, and is capable of performing adsorption fixation on a current collector. The traction driving assembly is in transmission connection with the traction head 31 and can drive the traction head 31 to move so as to enable the traction head 31 to adsorb the fixed current collector to move, correct and align.
In a preferred embodiment, referring to fig. 3 and 4, the traction drive assembly includes an X-axis drive 33, a Y-axis drive 34, and a Z-axis drive, the X-axis drive 33 and the Z-axis drive being optionally but not limited to telescoping cylinders or servomotors, and the Y-axis drive 34 being optionally but not limited to telescoping cylinders. The traction head 31 is connected to the output end of the Y-axis driving piece 34, and is driven by the Y-axis driving piece 34 to move in a telescopic manner in the Y-axis direction; the Y-axis driving piece 34 is arranged on the X-axis track 32 in a sliding way, and is driven by the X-axis driving piece 34 to slide along the X-axis track 32 in the X-axis direction; the X-axis driving member 34 is slidably disposed on the Z-axis track 35, and is driven by the Z-axis driving member to slide along the Z-axis track 35 in the Z-axis direction. Therefore, as shown in fig. 5, the movable adjustment of the traction head 31 in the X-axis, Y-axis and Z-axis directions is realized, so that the traction head 31 has three action positions of zero position R0, absorption traction position R1 and absorption waiting position R2, for example, two triaxial traction deviation correcting systems 3 corresponding to the left and right unreeling units 2, the traction head 31 of the left triaxial traction deviation correcting system 3 has zero position R0', absorption traction position R1' and absorption waiting position R2', the traction head 31 of the right triaxial traction deviation correcting system 3 has zero position R0', absorption traction position R1 'and absorption waiting position R2', respectively, after the traction head 31 absorbs and fixes the current collector, the position adjustment of the X-axis, Y-axis and Z-axis of the traction head 31 can be realized, the deviation correcting alignment operation is performed to the absorption waiting position to drag the current collector to the splicing belt in the splicing belt splicing system, the new reel unreeling unit 2 is rotated and matched with the old winding speed, the traction head 31 is retracted, and the absorption force of the traction head is required to be cut off, the absorption head is aligned with the new reel, and the quality of the new reel can be controlled.
In a preferred embodiment, referring again to fig. 1, the splicing and severing system includes a cutter assembly 4 disposed between the tri-axial traction deviation correcting system 3 and the feed side of the instant melting device 6 along the advancing direction of the unwind web. The cutter assembly 4 includes a cutter 41 and a cutter driving member 42 in driving connection with the cutter 41 to drive the cutter 41 to move and cut, wherein the cutter driving member 42 is optionally but not limited to an air cylinder or a motor, and is driven by the cutter driving member 42, and the cutter 41 can extend forward and abut against an unreeling path of the material belt to reset the cutter material belt or retract backward.
Specifically, the cutter assemblies 4 are set into multiple groups, the cutter assemblies 4 of the multiple groups are in one-to-one correspondence with the unreeling units 2, if the cutter assemblies 4 are set to include at least two groups corresponding to at least two unreeling shafts 21, specifically, two groups which are arranged left and right and are oppositely arranged, the corresponding cutter assemblies 4 can cut ends of the material strips unreeled by the corresponding unreeling units 2, and if two groups of cutter assemblies 4 corresponding to two material strips of new and old connection strips are oppositely arranged, the cutter assemblies can respectively extend forwards to cut off the material strips corresponding to the new and old connection strips.
In another preferred embodiment, the tape splicing and tape breaking system further comprises a tape splicing and feeding roller assembly 5 arranged on the feeding side of the instant hot melting device 6, and the tape splicing and feeding roller assembly 5 and the cutter assembly 4 together form the tape splicing and tape breaking system, wherein the tape can be guided into the instant hot melting device 6 accurately for welding. Specifically, the strip feeding roller assembly 5 is arranged between the discharging side of the cutter assembly 4 and the feeding side of the instant hot melting device 6, so that the strip feeding roller assembly can stably and accurately guide the strip.
As shown in fig. 6, the taping feeding roller assembly 5 includes a first laminating roller 51 and a second laminating roller 53 disposed opposite to each other, and the first laminating roller 51 and the second laminating roller 53 can move closer to each other or move away from each other. When unreeling and splicing, the first laminating roller 51 and the second laminating roller 53 cooperate to realize avoiding, propping and clamping actions when splicing the material belt, and the first laminating roller and the second laminating roller have three action positions of a zero position Q0, a splicing position Q1 and a working position Q2, for example, the first laminating roller 51 and the second laminating roller 53 corresponding to the left unreeling unit 2 and the right unreeling unit 2, the first laminating roller 51 has three action positions of a zero position Q0', a splicing position Q1' and a working position Q2', and the second laminating roller 53 also has three action positions of a zero position Q0", a splicing position Q1' and a working position Q2', so that the stability of splicing the belt and the smoothness of unreeling work are ensured.
Specifically, the first pressing roller 51 is in transmission connection with the first pressing roller driving member 52 and can be driven by the first pressing roller driving member 52 to move back and forth to be close to or away from the second pressing roller 53, while the second pressing roller 53 is in transmission connection with the second pressing roller driving member 54 and can be driven by the second pressing roller driving member 54 to move back and forth to be close to or away from the first pressing roller 51, so that bidirectional alternate synchronous execution actions of the first pressing roller 51 and the second pressing roller 53 can be realized, and the tape splicing stability and the fluency of unreeling work are further improved.
The tape receiving feeding roller assembly 5 has three action positions of zero position Q0, tape receiving position Q1 and working position Q2, the cutter 41 of the cutter assembly 4 has two positions of zero position P0 and working position P1, such as two cutter assemblies 4 corresponding to left and right unreeling units 2, the cutter 41 of the left cutter assembly 4 has two positions of zero position P0 'and working position P1', the cutter 41 of the right cutter assembly 4 has two positions of zero position P0 "and working position P1", please refer to fig. 7, when the first laminating roller 51 corresponding to the material roll a is located at the zero position and the second laminating roller 52 corresponding to the material roll B is located at the working position, the first laminating roller 51 corresponding to the material roll a avoids the working range of the material roll B, the second laminating roller 52 corresponding to the material roll B makes the tension distribution more uniform when the material roll B works, and vice versa; when the first laminating roller 51 corresponding to the A material roll is positioned at the tape splicing position and the second laminating roller 52 corresponding to the B material roll is positioned at the working position, the A material roll can be spliced with the tape head A 0 And B material roll-up joint tape tail B 1 The pressing and the joint conveying are carried to a station switching system, and then the cutter 41 corresponding to the material B rolls the tail B of the material B rolls 1 Cutting off, and carrying out A material rolling working material belt A 2 Unreeling and vice versa, splicing the material B to the tape head B 0 And A material is rolled up and is connected with tape tail A 1 The pressing and the joint conveying are carried to a station switching system, and then the cutter 41 corresponding to the material A rolls the tail A of the material A rolls 1 Cutting off and carrying out material rolling on the working material belt B 2 Unreeling; has the functions of pressing and conveying the tape head, uniformly distributing tension and avoiding positions, and can meet the requirements of a new tape head and an old tape tailThe preparation before welding can also improve the conveying stability of the material belt during working.
Example two
In the apparatus for unreeling and splicing a lithium battery current collector of this embodiment, as shown in fig. 1, the station switching system further includes a cooling air knife device 7 disposed on the discharging side of the instant hot melting device 6.
Specifically, the cooling air knife device 7 includes a first air knife 71 and a second air knife 72 that are disposed opposite to each other from left and right, and the first air knife 71 and the second air knife 72 can blow air from left and right sides of the unreeling material tape toward the material tape.
When carrying out the material area and connect the area, when the material area after the instantaneous hot melt device 6 accomplishes the hot melt area marches to cooling air knife device 7 corresponding station department, first air knife 71 and second air knife 72 are bloied to the material area after the hot melt, make the material area cooling of hot melt cool down, make the intensity of the material area after connecing the area in time promote, effectively avoid the material area after connecing the area to take in the tensile deformation of molten state, guarantee connecing area intensity and stability, avoid the high temperature to make the mass collector receive the interference in follow-up transportation simultaneously.
In addition, the discharging side of the cooling air knife device 7 is also provided with a passing roller 11, and the material belt after air cooling is guided to pass the roller.
Example III
In the lithium battery current collector unreeling and taping device of this embodiment, which is similar to the first embodiment or the second embodiment, further, referring to fig. 1 again, in the lithium battery current collector unreeling and taping device of this embodiment, the instant hot melting device 6 is slidably disposed on the base 8, the base 8 is provided with a station switching track, and the instant hot melting device 6 and the cooling air knife device 7 together form an integral station switching system, so as to enable sliding movement along the station switching track. In the embodiment shown, the base 8 and the station switching track thereon have a length extending from side to side, and the instant melting device 6 can be moved from side to side along the station switching track to be switched to correspond to the two unreeling units 2 arranged from side to side, respectively.
Specifically, referring to fig. 1 and 8, the instant hot melting device 6 is mounted on a station switching bracket 10, and the station switching bracket 10 is slidably disposed on a station switching rail through a slider 9. Further, a positioning drive member may be provided, and the positioning drive member may be, but is not limited to, an air cylinder or a servo motor screw assembly, and the station switching bracket 10 may be driven by the positioning drive member to slide on the station switching rail.
When the tape is switched to a different unwinding unit 2 to unwind a new material tape, referring to fig. 9, the instant hot melting device 6 can be switched to a station on one side corresponding to the corresponding unwinding unit 2 under the driving of the positioning driving member, so that the unwound material tape can be stably and smoothly unwound.
Further, the strip receiving feeding roller assembly 5 is arranged on the station switching support 10, and can synchronously perform station switching movement along with the instant hot melting device 6, so that feeding alignment of a material strip after the instant hot melting device 6 switches stations is ensured, and strip receiving stability and unreeling smoothness are ensured.
In addition, when the cooling air knife device 7 is arranged on the discharging side of the instant hot melting device 6, the cooling air knife device 7 can be arranged on the station switching support 10 and synchronously performs station switching movement along with the instant hot melting device 6, so that the air cooling effect of the cooling air knife device 7 after tape connection and the air cooling effect of the material tape are ensured.
The station switching system is composed of an instantaneous hot melting device 6, a cooling air knife device 7, a passing roller 11 and a base, as shown in fig. 9, the station switching system is provided with two action positions W1 and W2 corresponding to the left unreeling unit 2 and the right unreeling unit 2, the instantaneous hot melting device 6 can be adaptively matched with heating power according to the aggregate size, the material characteristics and the production line speed of a current collector, the instantaneous hot melting function of the current collector in the conveying process is realized under the condition of no shutdown, other additional adhesive materials are not needed in the same material hot melting mode, the connection strength is high, the cooling air knife device 7 applies forced air cooling to the current collector after hot melting to further improve the connection strength, meanwhile, the interference of the current collector in the subsequent conveying due to high temperature is avoided, the W1 position can meet the requirements of a new reel of a material roll and normal production work, and the W2 position is also the same.
Example IV
In the apparatus for unreeling and splicing a lithium battery current collector of this embodiment, which is similar to any one of the first to third embodiments, further referring to fig. 1, the tension matching system includes a tension roller assembly 12 disposed on the discharge side of the instant hot melting device 6, so as to adjust tension of the unreeled material belt, and avoid belt breakage or material belt wrinkling.
Specifically, the tension roller assembly 12 includes a tension roller 121 and a tension roller driver 122 for driving the tension roller 121 to move telescopically, the tension roller driver 122 being optionally but not limited to a cylinder or a motor. When the material belt is unreeled, the material belt passes through the tension roller 121, and the tension roller 121 floats back and forth under the drive of the tension roller driving piece 122 to drive the unreeled material belt to tension or relax, so that the tension of the material belt is regulated.
In a further preferred embodiment, a pass roller 11 is provided between the discharge side of the instant melting device 6 and the feed side of the tension roller assembly 12. In particular, the number of passing rollers 11 may be plural to precisely guide the web discharged from the instant melting device 6 to the tension roller assembly 12.
Furthermore, when the cooling air knife device 7 is provided on the discharge side of the instantaneous hot melt device 6, the over-roller 11 may be provided in particular between the discharge side of the cooling air knife device 7 and the feed side of the tension roller assembly 12 in order to guide the air-cooled material web to the tension roller assembly 12.
As shown in fig. 10, the tension roller 121 has two operating positions, namely, a working position N1 and a tape receiving position N2, and when the tape receiving feeding passing roller assembly 5 extends from the tape receiving position to the working position, the tension roller 121 returns to the working position when the station switching system corresponds to the changing position, the tension of the material tape in the working state is released, the stable tension adjusting capability in the material tape working state is maintained, and when the tension roller 121 extends to the tape receiving position, the material tape is made to enter the working state, and sufficient tension adjusting space is available.
Example five
The method for unreeling and taping the lithium battery current collector of the present invention adopts the apparatus for unreeling and taping the lithium battery current collector of any one of the first embodiment to the fourth embodiment to unreel and taping the current collector 13, please refer to fig. 11, and comprises the following steps:
s1, two unreeling units 2 which are arranged left and right on a positioning mounting plate 1 are used for unreeling a material roll A and a material roll B of a material roll 13 of a current collector respectively in sequence, wherein the unreeling unit 2 on the left side unreels the material roll A, and the material roll B on the unreeling unit 2 on the right side waits for unreeling.
When the unwinding of the material roll a is about to end, as shown in fig. 12, the left traction deviation correcting system 3 is at zero position to wait for a new material roll a, the unwinding unit 2 on the right side unwinds the tape head of the material roll B, and the traction deviation correcting system 3 corresponding to the unwinding unit 2 on the right side guides the tape of the material roll B to the upper side of the tape receiving feeding roller assembly 5.
At this time, the first pressing roller 51 is in the working position to make the tension distribution more uniform when the old material roll A works, the second pressing roller 53 is in the zero position to avoid the working range of the material roll A, the station switching support 10 is in the position corresponding to the material roll B to prepare for the connection of the old material roll A and the material roll B, the cutter 41 corresponding to the material roll A is in the zero position to wait for the belt breaking operation, the cutter 41 corresponding to the material roll B is in the zero position to avoid the working range of the material roll A, and the tension roller assembly 12 is in the working position to release the tension of the material roll A in the working state and maintain the stable tension adjustment capability in the working state of the material roll A.
S2, when the strip is connected, the traction deviation correcting system 3 corresponding to the material roll A keeps unchanged, the traction deviation correcting system 3 corresponding to the material roll B performs online deviation correction alignment on the new strip winding head of the material roll B to align with the old roll of the material roll A and is combined with the self-rotation traction of the unreeling unit to the adsorption waiting position, the first laminating roller 51 keeps unchanged, the second laminating roller 53 stretches out to the strip connecting position to jointly convey the new strip winding head of the material roll B and the old roll of the material roll A in the adsorption waiting position to the station switching system, the strip of the material roll B and the strip of the material roll A are matched with each other in linear speed, the strip of the material roll B and the strip of the material roll A are guided into the station of the instant hot melting device 6 through the strip connecting feeding roller assembly 5, and the station switching system provides instant hot melting and cooling on the old strip of the material roll A and the strip of the material roll B to weld the strip of the material roll B and the strip of the material roll A.
The cutter 41 corresponding to the A material roll stretches out to the working position to cut off the tail of the old tape of the A material roll, the cutter 41 corresponding to the B material roll is kept unchanged, and the tension roller assembly 12 stretches out to the tape receiving position to enable the B material roll to enter the working state, so that sufficient tension adjustment space exists.
S3, cutting off the tail material of the material roll A, switching to unreeling the material roll B, and referring to FIG. 13, the material roll B can be conveyed to the next station through the roller 11 and the tension roller assembly 12 in sequence. At this time, a new roll A can be fed to the left unreeling unit 2.
The new roll a waits and the old roll B works. The traction deviation correcting system 3 corresponding to the A coil is positioned at an adsorption traction position to capture and adsorb a new coil head corresponding to the unreeling and falling of the A coil through an electrostatic suction head, the traction deviation correcting system 3 corresponding to the B coil returns to a zero position to enter a next coil changing period, the first pressing roller 51 returns to the zero position to avoid the working range of the B coil, the second pressing roller 53 stretches out to the working position to enable tension distribution to be more uniform when the B coil works, the station switching system is changed to correspond to the A coil position to prepare for connecting the B coil old belt with the A coil head, the cutter 41 corresponding to the A coil returns to the zero position to avoid the B coil working range to enter the next coil breaking period, the cutter 41 corresponding to the B coil is kept unchanged, and the tension roller assembly 12 returns to the working position to release the tension of the B coil in the working state and keep stable tension adjustment capacity in the B coil working state.
And S4, when the unwinding of the material roll B on the right side is about to finish, the unwinding unit 2 on the left side finishes the feeding of the new material roll A, and as shown in FIG. 14, the unwinding unit 2 on the left side unwinds the tape head of the new material roll A, and the traction deviation correcting system 3 corresponding to the unwinding unit 2 on the left side guides the tape of the new material roll A to the position above the tape receiving feeding roller assembly 5.
And S5, when the new material roll A and the old material roll B are connected, the traction deviation correcting system 3 corresponding to the material roll A carries out online deviation correction alignment on the new material roll A head to align with the old material roll B and is combined with the rotation traction of the left unreeling unit 2 to the adsorption waiting position, the traction deviation correcting system 3 corresponding to the material roll B keeps unchanged, the first laminating roller 51 stretches out to the belt connecting position to jointly convey the new material roll A head of the adsorption waiting position and the old material roll B in work to the station switching system in a laminating way, the material belts of the new material roll A and the material belts of the material roll B are matched with each other in linear speed, the material belts of the material roll B and the material belts of the new material roll A are guided into the station of the instant hot melting device 6 through the belt connecting feeding roller assembly 5, the second laminating roller 53 keeps unchanged, and the station switching system provides instant hot melting and cooling for the new and old material roll B and the new material roll A head, and the material belts of the material roll B are welded.
The cutter 41 corresponding to the material roll A is kept unchanged, the cutter 41 corresponding to the material roll B extends to the working position to cut off the tail of the old material roll B, and the tension roller assembly 12 system extends to the tape receiving position to enable the material roll A to enter the working state, so that sufficient tension adjustment space exists.
S6, cutting off the tail material of the material roll B, switching to unreeling the material roll A, and referring to FIG. 15, the material roll A can be conveyed to the next station through the roller 11 and the tension roller assembly 12 in sequence. At this time, a new roll B can be fed to the right unreeling unit 2.
The old material roll A works, and the new material roll B waits. The traction deviation correcting system 3 corresponding to the material roll A returns to the zero position to enter the next roll changing period, the traction deviation correcting system 3 corresponding to the material roll B stretches out to the adsorption traction position to capture and adsorb a new roll winding head corresponding to the unreeling and falling of the material roll B through the electrostatic suction head, the first laminating roller 51 stretches out to the working position to enable tension distribution of the material roll A to be more uniform when the material roll A works, the second laminating roller 53 returns to the zero position to avoid the working range of the material roll A, the station switching system changes to the position corresponding to the material roll B to prepare for the connection of old roll A and the roll winding head of the material roll B, the cutter 41 corresponding to the material roll A remains unchanged, the cutter 41 corresponding to the material roll B returns to the zero position to avoid the working range of the material roll B to enter the next roll breaking period, and the tension roller assembly 12 returns to the working position to release the tension of the material roll A in the working state and maintain stable tension adjustment capacity in the working state of the material roll A.
S7, repeating the steps S1-S6, so that uninterrupted continuous unreeling of the current collector 13 material roll can be realized, and the production efficiency is ensured. And the instantaneous hot melting device 6 is adopted to connect the strip in a welding mode, so that the strength and stability of the strip are ensured, and the production quality of the lithium battery pole piece is further ensured.
In a preferred embodiment, please refer to fig. 12 to 15, in the adopted lithium battery current collector unreeling and receiving device, a cooling air knife device 7 may be disposed on the discharging side of the instant hot melting device 6, the combined material strip after the welding and receiving can be blown from two sides of the material strip by the cooling air knife device 7 to perform air cooling and cooling, the material strip after the air cooling and cooling sequentially passes through a roller 11 and a tension roller assembly 12 for unreeling and feeding, the strength and stability of the material strip after the welding are timely ensured, the conditions of breakage and tensile deformation of the current collector 13 can be avoided, and the production quality of the lithium battery pole piece is further ensured.
The above embodiments are merely preferred embodiments of the present invention and only the technical solutions of the present invention have been described in further detail, but the above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments, the scope and implementation of the present invention are not limited thereto, and any changes, combinations, deletions, substitutions or modifications made without departing from the spirit and principles of the present invention are included in the scope of the present invention.
Claims (12)
1. The unreeling and taping method for the lithium battery current collector is characterized by comprising the following steps of:
s1, unreeling a material roll A and a material roll B in sequence by at least two unreeling units respectively;
s2, working an old material roll A, and waiting a new material roll B
The traction deviation correcting system of the corresponding material roll A is positioned at a zero position to wait for a new roll A, the traction deviation correcting system of the corresponding material roll B is positioned at an adsorption traction position to capture and adsorb a new roll head which automatically falls down from an unreeling unit of the corresponding material roll B through an electrostatic suction head, a pressing roller of the corresponding material roll A is positioned at a working position to enable tension to be uniformly distributed when the material roll A works, the pressing roller of the corresponding material roll B is positioned at a zero position to avoid the working range of the material roll A, a station switching system is positioned at the position corresponding to the material roll B to prepare for the old belt of the material roll A and the receiving belt of the roll B, a corresponding material roll cutter is positioned at the zero position to wait for a belt breaking operation, a corresponding material roll B is positioned at the zero position to avoid the working range of the material roll A, and a tension matching system is positioned at the working position to release tension of the material roll A in a working state and maintain stable tension adjustment capacity in the working state of the material roll A;
s3, carrying out new rolling connection tape of the material A roll old roll and the material B roll
The traction deviation correcting system corresponding to the A material roll keeps unchanged, the traction deviation correcting system corresponding to the B material roll carries out online deviation correction alignment on the new tape head of the B material roll so as to align the new tape head of the B material roll with the old tape head of the A material roll, the new tape head of the A material roll is combined with the corresponding unwinding unit to automatically draw the new tape head of the B material roll to an adsorption waiting position, the laminating roller corresponding to the A material roll keeps unchanged, the laminating roller corresponding to the B material roll stretches out to a tape receiving position to jointly convey the new tape head of the B material roll and the old tape head of the A material roll in work to a station switching system, the station switching system provides instant hot melting for the old tape of the A material roll and the old tape head of the B material roll, the cutter corresponding to the A material roll stretches out to the working position to cut off the tail of the old tape of the A material roll, the cutter corresponding to keep unchanged, and the tension matching system stretches out to the tape receiving position so that the new tape of the B material roll enters the working state, and enough tension adjustment space is available;
S4, waiting for new rolls of the material roll A and working for old rolls of the material roll B
The traction deviation correcting system corresponding to the A material roll is positioned at an adsorption traction position to capture and adsorb a new tape head which automatically falls down from the corresponding A material roll unreeling unit through an electrostatic suction head, the traction deviation correcting system corresponding to the B material roll returns to a zero position to enter a next roll changing period, the pressing roller corresponding to the A material roll returns to the zero position to avoid the working range of the B material roll, the pressing roller corresponding to the B material roll extends to a working position to enable tension to be uniformly distributed when the B material roll works, the station switching system changes to the position corresponding to the A material roll so as to prepare for the old tape of the B material roll and the tape head of the A material roll, the cutter corresponding to the A material roll returns to the zero position to avoid the working range of the B material roll to enter the next tape breaking period, the cutter corresponding to the B material roll remains unchanged, and the tension matching system returns to the working position to release the tension of the B material roll in the working state and maintain stable tension adjustment capacity in the working state of the B material roll;
s5, carrying out old roll splicing tape of the new roll of the material roll A and the material roll B
The traction deviation correcting system corresponding to the A material roll performs online deviation correcting alignment on the new winding head of the A material roll to align with the old winding head of the B material roll and combines the autorotation traction of the unreeling unit to the adsorption waiting position, the traction deviation correcting system corresponding to the B material roll is kept unchanged, the laminating roller corresponding to the A material roll stretches out to the belt receiving position to jointly convey the new winding head of the A material roll in the adsorption waiting position and the old winding head of the B material roll in work to the station switching system, the laminating roller corresponding to the B material roll is kept unchanged, the station switching system provides instant hot melting for the old winding head of the B material roll and the A material roll, the cutter corresponding to the A material roll is kept unchanged, the cutter corresponding to the B material roll stretches out to the working position to cut off the tail of the old winding of the B material roll, and the tension matching system stretches out to the belt receiving position to enable the new winding of the A material roll to enter the working state, so that a sufficient tension adjustment space is available;
S6, working an old material roll A, and waiting a new material roll B
The traction deviation correcting system of the corresponding material roll A returns to a zero position to enter a next roll changing period, the traction deviation correcting system of the corresponding material roll B extends to an adsorption traction position to capture and adsorb a new roll winding head automatically fallen from an unreeling unit of the corresponding material roll B through an electrostatic suction head, a laminating roller of the corresponding material roll A extends to a working position to enable tension distribution to be more uniform when the material roll A works, the laminating roller of the corresponding material roll B returns to a zero position to avoid the working range of the material roll A, a station switching system changes to a position corresponding to the material roll B to prepare for the old roll of the material roll A and the roll head of the material roll B, a cutter of the corresponding material roll A remains unchanged, the cutter of the corresponding material roll B returns to the zero position to avoid the working range of the material roll B to enter a next roll breaking period, and the tension matching system returns to the working position to release tension of the material roll A in the working state and maintain stable tension adjustment capacity in the working state of the material roll A;
s7, reciprocating circulation S3-S6, and automatic unreeling and taping are achieved.
2. The method for unreeling and splicing the lithium battery current collector according to claim 1, wherein the combined material strips after welding in S3 and S5 are subjected to air cooling.
3. A lithium battery current collector unreeling and taping device, comprising:
At least two unreeling units, wherein the unreeling units are provided with unreeling shafts which are independent from each other;
the strip receiving and breaking system is arranged on the discharging side of the unreeling unit along the advancing direction of the unreeling material strip; the tape splicing and tape breaking system comprises a cutter assembly and a tape splicing feeding roller assembly;
the station switching system is arranged on the discharging side of the strip receiving and breaking system along the advancing direction of the unreeling material strip; the station switching system comprises an instantaneous hot melting device which can be movably switched to correspond to at least two unreeling units respectively;
at least two groups of triaxial traction correction systems corresponding to at least two unreeling shafts are arranged between the unreeling discharging side of the unreeling unit and the feeding side of the station switching system along the advancing direction of the unreeling material belt; the three-axis traction deviation correcting system comprises a traction head and a traction driving assembly, wherein the traction driving assembly is in transmission connection with the traction head and drives the traction head to move;
the tension matching system is arranged on the discharging side of the station switching system;
and the control logic system is used for controlling the automatic unreeling and splicing of the tape by a program.
4. The unreeling and taping device for lithium battery current collector of claim 3, wherein the unreeling shaft is arranged on the positioning mounting plate and is driven by the avoidance driving piece to extend and retract relative to the positioning mounting plate.
5. The lithium battery current collector unreeling and taping device of claim 3, wherein the pulling head comprises an electrostatic suction head.
6. The lithium battery current collector unreeling and taping device of claim 3, wherein the traction drive assembly comprises an X-axis drive, a Y-axis drive, and a Z-axis drive;
the traction head is connected to the output end of the Y-axis driving piece and driven by the Y-axis driving piece to move in a telescopic way in the Y-axis direction; the Y-axis driving piece is arranged on the X-axis track in a sliding way, and is driven by the X-axis driving piece to slide and move in the X-axis direction; the X-axis driving piece is arranged on the Z-axis track in a sliding mode, and the Z-axis driving piece drives the X-axis driving piece to slide and move in the Z-axis direction.
7. The lithium battery current collector unreeling and taping device of claim 3, wherein the cutter assembly comprises at least two sets corresponding to at least two of the unreeling shafts; the cutter assembly comprises a cutter and a cutter driving piece which is in transmission connection with the cutter to drive the cutter to move and cut.
8. The lithium battery current collector unreeling and taping device of claim 3, wherein the taping feeding roller assembly comprises a first laminating roller and a second laminating roller which are oppositely arranged, and the first laminating roller and the second laminating roller can move close to each other or move away from each other.
9. The lithium battery current collector unreeling and taping device according to claim 3, wherein a cooling air knife device is arranged on the discharging side of the instant hot melting device, and the cooling air knife device comprises a first air knife and a second air knife which are oppositely arranged.
10. The lithium battery current collector unreeling and taping device according to claim 3, wherein a tension roller assembly is arranged on the discharging side of the instant hot melting device, and the tension roller assembly comprises a tension roller and a tension roller driving piece for driving the tension roller to move in a telescopic manner.
11. The lithium battery current collector unreeling and taping device of claim 10, wherein a pass roller is disposed between the discharge side of the instant hot melt device and the feed side of the tension roller assembly.
12. The lithium battery current collector unreeling and taping device according to any one of claims 3 to 11, wherein the instant hot melting device is slidably arranged on a station switching track, and is capable of sliding movement on the station switching track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310602481.2A CN116513846A (en) | 2023-05-25 | 2023-05-25 | Unreeling and tape-connecting method and unreeling and tape-connecting equipment for lithium battery current collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310602481.2A CN116513846A (en) | 2023-05-25 | 2023-05-25 | Unreeling and tape-connecting method and unreeling and tape-connecting equipment for lithium battery current collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116513846A true CN116513846A (en) | 2023-08-01 |
Family
ID=87390314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310602481.2A Pending CN116513846A (en) | 2023-05-25 | 2023-05-25 | Unreeling and tape-connecting method and unreeling and tape-connecting equipment for lithium battery current collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116513846A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116969239A (en) * | 2023-09-22 | 2023-10-31 | 常州市哈德胜精密科技有限公司 | Uninterrupted refueling control method and device |
| CN117142209A (en) * | 2023-10-27 | 2023-12-01 | 广东美登新材料科技有限公司 | Follow-up unreeling device |
| CN117819264A (en) * | 2024-03-05 | 2024-04-05 | 大连保税区金宝至电子有限公司 | Automatic roll-to-roll laminating feeding device in etching processing process |
-
2023
- 2023-05-25 CN CN202310602481.2A patent/CN116513846A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116969239A (en) * | 2023-09-22 | 2023-10-31 | 常州市哈德胜精密科技有限公司 | Uninterrupted refueling control method and device |
| CN116969239B (en) * | 2023-09-22 | 2023-11-28 | 常州市哈德胜精密科技有限公司 | Uninterrupted refueling control method and device |
| CN117142209A (en) * | 2023-10-27 | 2023-12-01 | 广东美登新材料科技有限公司 | Follow-up unreeling device |
| CN117142209B (en) * | 2023-10-27 | 2024-01-19 | 广东美登新材料科技有限公司 | Follow-up unreeling device |
| CN117819264A (en) * | 2024-03-05 | 2024-04-05 | 大连保税区金宝至电子有限公司 | Automatic roll-to-roll laminating feeding device in etching processing process |
| CN117819264B (en) * | 2024-03-05 | 2024-05-14 | 大连保税区金宝至电子有限公司 | Automatic roll-to-roll laminating feeding device in etching processing process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116513846A (en) | Unreeling and tape-connecting method and unreeling and tape-connecting equipment for lithium battery current collector | |
| CN112563551A (en) | Battery cell winding equipment and battery cell winding method | |
| CN207896187U (en) | Pole piece welding equipment | |
| CN115490053A (en) | Automatic material changing and tape splicing device and method for lithium battery pole piece | |
| CN117507053A (en) | EVA adhesive film automatic punching device and use method thereof | |
| CN117342328A (en) | EVA (ethylene-vinyl acetate) small strip automatic laying device and application method thereof | |
| CN210489752U (en) | Battery cell winding equipment | |
| CN216941916U (en) | Fiber cord fabric splicing device and fiber cord fabric cutting machine | |
| CN211998118U (en) | Utmost point ear glues and changes transmission controlling means of nickel strap | |
| CN110371739A (en) | A kind of Full-automatic feeding method | |
| CN214566756U (en) | High-precision automatic labeling machine | |
| CN216444714U (en) | Laminboard protective film recycling equipment | |
| CN210651989U (en) | Storage device and production line for manufacturing steel wire crown belt | |
| CN112810200A (en) | Cord fabric processing device and cord fabric processing method | |
| CN218849548U (en) | Rubberizing device and electric core winder | |
| CN111960155A (en) | Automatic tape splicing device and unreeling device with same | |
| CN111153272B (en) | Device and method for controlling transmission of tab glue and nickel conversion belt | |
| CN220222916U (en) | Adhesive tape rewinding equipment | |
| CN117049235B (en) | Sealing strip bonding tape production facility | |
| CN219007052U (en) | Material joint detection device | |
| CN108906766B (en) | CIGS glass substrate coating film cleaning system | |
| CN218366553U (en) | Continuous hot edge sealing equipment for sealing edge of honeycomb core plate | |
| CN114678576B (en) | Adhesive tape sticking device | |
| CN212768881U (en) | Non-woven fabric composite conveying device | |
| CN221093074U (en) | Waste film recovery mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |