CN108666610B - Pole piece inserting and cutting device, working method thereof and cylindrical battery core sheet making winding machine - Google Patents
Pole piece inserting and cutting device, working method thereof and cylindrical battery core sheet making winding machine Download PDFInfo
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- CN108666610B CN108666610B CN201810738631.1A CN201810738631A CN108666610B CN 108666610 B CN108666610 B CN 108666610B CN 201810738631 A CN201810738631 A CN 201810738631A CN 108666610 B CN108666610 B CN 108666610B
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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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
- 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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention provides a pole piece inserting and cutting device and a working method thereof, and a cylindrical battery core sheet making winding machine. And a working method and a cylindrical battery core sheet winding machine thereof. The insertion cutting device, the working method thereof and the cylindrical battery cell sheet-making winding machine have the advantages of high response speed and high production efficiency.
Description
Technical Field
The invention relates to the technical field of battery production equipment, in particular to a pole piece inserting and cutting device, a working method of the pole piece inserting and cutting device and a cylindrical battery core sheet making winding machine provided with the pole piece inserting and cutting device.
Background
The existing battery core of the lithium battery is generally manufactured in a winding or lamination mode, and in the winding process, the feeding of the pole piece into the winding position is an important step, because whether the pole piece is accurately fed into the winding position determines whether the pole piece can be correctly wound, and the existing automatic battery core winding equipment generally adopts a pole piece inserting and cutting device to realize the feeding of the pole piece and the cutting of the pole piece after the winding is finished, and therefore, the pole piece inserting and cutting device is an important component unit in the automatic battery core winding equipment.
The existing pole piece inserting and cutting device mainly comprises a pole piece inserting mechanism and a pole piece cutting mechanism, and has the main functions that a pole piece to be wound is transferred to a winding head at a winding position through the pole piece inserting mechanism, and a subsequent pole piece is cut off through the pole piece cutting mechanism after the winding head finishes fixed-length winding of the pole piece. The working process of the existing pole piece inserting and cutting device is specifically as follows: when the pole piece is fed, the pole piece inserting mechanism and the pole piece cutting mechanism move towards the winding head at the same time, so that the pole piece inserting mechanism feeds the pole piece onto the winding head, then the pole piece inserting mechanism resets, and the pole piece cutting mechanism stays at the winding head. When the winding head finishes winding the pole piece in fixed length, the winding head needs to suspend winding the pole piece, waits for the pole piece cutting mechanism to cut off the pole piece, resets the pole piece cutting mechanism after cutting off the pole piece, and simultaneously the winding head winds the pole piece which is not wound after cutting, and carries out rubberizing treatment on an electric core formed by winding, and then prepares for winding the next electric core.
However, as known from the working process of the pole piece inserting and cutting device, when the pole piece is cut by the existing pole piece inserting and cutting device, the pole piece needs to be wound in a suspended manner, so that the pole piece cutting mechanism can cut the pole piece, the short suspension of the automatic battery core winding equipment in the process of winding the battery core is caused, the production efficiency of the pole piece inserting and cutting device and the automatic battery core winding equipment is low, and the situation that the winding and cutting operations of the pole piece are mutually interfered due to the fact that a certain response time is required for pneumatic components and parts is caused when the pole piece is cut is also possible.
Disclosure of Invention
In order to solve the problems, the main purpose of the invention is to provide a pole piece inserting and cutting device which has the advantages of simple structure, high response speed, reliable work and high production efficiency.
The invention further aims to provide a working method of the pole piece inserting and cutting device, which is high in response speed, reliable in work and high in production efficiency.
The invention further aims to provide the cylindrical battery core sheet winding machine which is simple in structure, high in response speed, reliable in operation and high in production efficiency.
In order to achieve the main purpose of the invention, the invention provides a pole piece inserting and cutting device, which comprises a mounting seat, a cutting unit, an inserting unit, a guiding unit, a first driving unit and a second driving unit, wherein a first guide rail and a second guide rail are arranged on the mounting seat, the first guide rail is parallel to the second guide rail, the cutting unit comprises a first connecting seat, a cutter assembly, a reset assembly and a guiding assembly, the first connecting seat is slidably connected with the first guide rail, the cutter assembly is slidably arranged on the first connecting seat, the reset assembly is connected between the cutter assembly and the first connecting seat, the guiding assembly is arranged on the cutter assembly, the inserting unit is slidably connected with the second guide rail, the inserting unit is positioned at the upstream end of the cutting unit along the feeding direction of the inserting unit, the connecting line of the inserting unit and the cutting unit is parallel to the first guide rail, the guiding unit is positioned at the downstream end of the inserting unit along the feeding direction, the guiding unit comprises a first guiding seat, the first guiding surface is arranged at the downstream end of the first guiding seat in the feeding direction in an extending manner from the upstream end of the feeding direction, the reset assembly is connected between the cutter assembly and the first connecting seat, the guiding assembly is arranged between the inserting unit and the first driving unit along the vertical direction, the distance between the first driving unit and the first guide unit is perpendicular to the first guide unit is arranged along the driving end and the first guide unit.
From the above, the insertion unit is used for sending the pole piece to the winding head of the cylindrical battery core sheet winding machine, so that the winding head clamps the pole piece and winds the pole piece. When the pole piece is rolled, the first driving unit drives the cutting unit to move towards the winding head, and then the pole piece is cut off. And in the moving process of the cutting unit, the winding head can not pause winding the pole piece, so that the cutting unit moves along with the pole piece. When the cutting unit moves to the position of the guiding unit, namely, when the cutting unit moves to the position close to the winding head, the guiding component on the cutting unit is adjacent to the first guiding surface of the first guiding seat of the guiding unit, and the edge part of the cutter component also gradually moves towards the pole piece as the cutting unit gets closer to the winding head. When the cutting unit moves to a set position, namely the cutting unit moves to the winding head, the cutter assembly is driven by the first guide surface and the guide assembly in a matched mode, and the pole piece is just cut off. According to the invention, through the arrangement and structural design of the pole piece inserting and cutting device, when the pole piece is cut by the cutting unit, the winding head of the cylindrical battery core sheet winding machine can not suspend winding of the pole piece, and the cutting unit can move along with the winding linear speed of the winding head, so that the dynamic cutting of the pole piece is realized, the winding continuity of the pole piece is ensured, and meanwhile, the defects of long response time and low response sensitivity of a sensing device of the air cylinder when the driving of the air cylinder is adopted as the main power can be overcome.
In a preferred embodiment, the guide assembly is moved opposite or counter to the first guide shoe in the direction of the guide assembly.
The guide unit further comprises a first driving mechanism, wherein the first driving mechanism is connected with the first guide seat, and the first driving mechanism drives the first guide seat to move along the direction of the guide assembly relative to the guide assembly.
From the above, the first driving mechanism is used for driving the guide seat to move relative to the guide assembly, so that when the inserting unit delivers the pole piece to the winding head, the first driving mechanism can drive the first guide seat to be far away from the cutting unit, the guide assembly of the cutter unit which moves along with the first guide surface of the guide unit is prevented from abutting, and the pole piece is prevented from being cut in the delivering process.
Still further, the guide assembly comprises a second driving mechanism and a first guide wheel, the second driving mechanism is arranged on the first connecting seat, the first guide wheel is connected with the second driving mechanism, the first guide wheel is arranged towards the first guide seat, and the second driving mechanism drives the first guide wheel to move along the direction of the guide assembly relative to the first guide seat.
From the above, after the guide component and the first guide seat are arranged to be capable of moving towards or away from each other, the delivery stroke of the insertion unit can be effectively reduced, and the reliability of the insertion unit for feeding the pole piece into the winding head of the cylindrical battery core sheet winding machine can be ensured. In addition, through the setting to the motion form of direction subassembly and first guide holder, can also effectually reduce the volume that the pole piece inserted cutting device, reduce the installation space that the pole piece inserted cutting device.
In another preferred embodiment, the insertion unit includes a second connection seat slidably connected with the second guide rail, the driving end of the second driving unit is connected with the second connection seat, and the clamping assembly is slidably mounted on the second connection seat.
From the above, the second connecting seat provides installation space for the clamping component to realize the connection of inserting unit and second drive unit, the clamping component is used for inserting the unit and sending the pole piece into the in-process of the winding head of cylindrical battery core film-making coiling machine and press from both sides tightly the pole piece, avoids pole piece pine to take off department and inserts the unit, and the clamping component still has the design effect, guarantees that the pole piece can be accurately inserted on the winding head.
The inserting unit further comprises a second guide wheel, the second guide wheel is arranged on the clamping assembly, the guiding unit further comprises a second guide seat, the second guide seat is located at the upstream end of the first guide seat along the feeding direction, a second guide surface is arranged on the second guide seat in an extending mode from the upstream end of the feeding direction to the downstream end of the feeding direction, the vertical distance between one end, close to the cutting unit, of the second guide surface and the second guide rail is larger than the vertical distance between one end, far away from the cutting unit, of the second guide surface and the second guide rail, the second guide wheel is arranged towards the second guide seat, and the second driving unit drives the second guide wheel to move in the reverse direction of the feeding direction to be adjacent to the second guide surface.
From the above, set up the second guide holder and set up the second guide pulley on the clamping assembly, can prevent that the winding head from being in the winding process, because insert the unit and press from both sides the pole piece and lead to the winding unable to coil the pole piece.
Still further, the pole piece inserting and cutting device further comprises a first position sensor and a second position sensor, wherein the first position sensor is installed on the installation seat, the detection end of the first position sensor is arranged towards the cutting unit, the second position sensor is installed on the installation seat, and the detection end of the second position sensor is arranged towards the inserting unit.
From the above, the first position sensor is used for detecting and controlling the limit position of the movement of the cutting unit, so that the cutting unit is prevented from colliding with the winding head or the inserting unit due to the fact that the cutting unit passes through the limit position; the second position sensor is used for detecting and controlling the limit position of the movement of the insertion unit, so that the insertion unit is prevented from colliding with the cutting unit or other unit components of the cylindrical battery cell sheet winding machine due to the fact that the insertion unit passes through the limit position.
In order to achieve another object of the present invention, the present invention provides a working method of a pole piece inserting and cutting device, wherein the pole piece inserting and cutting device is the pole piece inserting and cutting device, the working method includes a pole piece inserting step, a second driving unit drives an inserting unit to move towards an upper material direction, and the inserting unit drives the inserting unit to reset after the inserting unit delivers an adhesive tape to a winding station; a tape cutting step, in which the first driving unit drives the cutting unit to move along the feeding direction, when the cutting unit moves to the head end of the first guide surface, the guide assembly is adjacent to the first guide surface, the guide assembly slides along the first guide surface along with the sliding of the cutting unit, the cutter assembly slides towards the tape along with the sliding of the guide assembly, and when the cutting unit moves to one end of the first guide surface far away from the inserting unit, the cutter assembly cuts off the tape; and resetting the cutting unit, namely driving the cutting unit to reversely move along the feeding direction by the first driving unit so as to reset the cutting unit.
Therefore, the working method of the pole piece inserting and cutting device has the advantages of high response speed, reliable work and high production efficiency. Through the cooperation between cutting unit and the direction unit for when cutting the pole piece, the coiling head of cylindrical battery core film-making coiler can not need to suspend the coiling to the pole piece, and cuts the unit and remove according to the new speed of coiling head, realizes the dynamic cutting off to the pole piece, guarantees the continuity of pole piece coiling, through the cooperation of mechanical mode, can also overcome when adopting the drive of cylinder as the main power in the current working method, the sensor of cylinder has response time length, response sensitivity is low shortcoming.
In order to achieve still another object of the present invention, the present invention provides a cylindrical battery core sheet-making winder, comprising a frame, a winding head and a pole piece insertion and cutting device, the winding head is rotatably mounted on the frame around its own axis, the pole piece insertion and cutting device is mounted on the frame, wherein the pole piece insertion and cutting device comprises a mounting base, a cutting unit, an insertion unit, a guide unit, a first driving unit and a second driving unit, the mounting base is mounted on the frame, the mounting base is provided with a first guide rail and a second guide rail extending towards the winding head, the first guide rail is parallel to the second guide rail, the cutting unit comprises a first connecting base, a cutter assembly, a reset assembly and a guide assembly, the first connecting base is slidably connected with the first guide rail, the cutter assembly is slidably mounted on the first connecting base, the reset assembly is connected between the cutter assembly and the first connecting base, the guide assembly is slidably connected with the second guide rail, the insertion unit is located at an upstream end of the cutting unit along an upper material-feeding direction of the insertion unit, the connection line of the insertion unit and the cutting unit is parallel to the first guide rail, the first guide unit is located at a downstream end of the insertion unit along the upper material-feeding direction of the insertion unit, the first guide unit is located at a distance from the first guide end of the first connecting base to the first guide unit, the first guide unit is located at a distance from the downstream end of the first connecting base to the first guide unit, the first guide unit is perpendicular to the first guide end is located at a position between the first guide unit and the first guide unit is perpendicular to the first guide end, and the first guide unit is located at a distance between the first guide unit and the cutting device, and the cutting device has a device, and the device is mounted. The first driving unit drives the guide assembly to move along the feeding direction to be adjacent to the first guide surface, the driving end of the second driving unit is connected with the insertion unit, and the second driving unit drives the insertion unit to slide along the second guide rail.
From the above, the insertion unit is used for feeding the pole piece onto the winding head, so that the winding clamps the pole piece and winds the pole piece. When the pole piece is rolled, the first driving unit drives the cutting unit to move towards the winding head, and then the pole piece is cut off. In the moving process of the cutting unit, the winding head can not pause winding the pole piece, so that the cutting unit moves along with the pole piece. When the cutting unit moves to the guiding unit and the cutting unit moves to the position close to the winding head, the guiding component on the cutting unit is adjacent to the first guiding surface of the first guiding seat of the guiding unit, and the edge part of the cutter component gradually moves towards the pole piece as the cutting unit gets closer to the winding head. When the cutting unit moves to a set position, namely the cutting unit moves to the winding head, the cutter assembly is driven by the first guide surface and the guide assembly in a matched mode, and the pole piece is just cut off. According to the invention, by arranging and structurally designing the pole piece inserting and cutting mechanism of the cylindrical battery core sheet-making winding machine, the winding head can not need to pause winding of the pole piece when the cutting unit cuts the pole piece, and the cutting unit can move along with the winding linear speed of the winding head, so that the dynamic cutting of the pole piece is realized, the continuity of winding of the pole piece is ensured, and meanwhile, the defects of long response time and high response sensitivity of a sensor of the cylinder when the driving of the cylinder is adopted as the main power can be overcome.
Further, the guide assembly and the first guide seat can move in opposite directions or opposite directions along the direction of the guide assembly.
From the above, through setting up the guide component and the first guide holder in form that can move in opposite directions or in opposite directions, can effectually reduce the delivery stroke of insert unit to guarantee the reliability that insert unit sent the pole piece into the coiling head of cylindrical electric core film-making coiling machine. In addition, through the setting to the motion form of direction subassembly and first guide holder, can also effectually reduce the volume that the pole piece inserted cutting device, reduce the installation space that the pole piece inserted cutting device.
Drawings
Fig. 1 is a partial view of a first embodiment of a cylindrical cell pellet winder of the present invention with parts of the components omitted.
Fig. 2 is a partial view of a cylindrical cell pellet winder of the present invention with parts of the components omitted from another view.
Fig. 3 is a block diagram of a cutting unit of a pole piece insertion cutting device of a first embodiment of a cylindrical battery cell sheet-making winder of the present invention.
Fig. 4 is a structural view of a guide unit of a pole piece insertion cutting device of a first embodiment of a cylindrical battery cell sheet winding machine of the present invention.
Fig. 5 is a first state reference diagram of a pole piece insertion cutting device of a first embodiment of a cylindrical cell sheet winder of the present invention.
Fig. 6 is a second state reference diagram of the pole piece insertion cutting device of the first embodiment of the cylindrical cell sheet winder of the present invention.
The invention is further described below with reference to the drawings and examples.
Detailed Description
Cylindrical cell pellet winder first embodiment:
referring to fig. 1 and 2, a cylindrical cell sheet winder includes a frame 101, a winding head 102, and a pole piece insertion cutting device 10. The winding head 102 is rotatably connected with the frame 101 around its own axis, and the winding head 102 is used for laminating a positive plate, a negative plate, a diaphragm and the like in a certain order and then winding the positive plate, the negative plate, the diaphragm and the like for a certain length to form a battery core. The pole piece insertion and cutting device 10 is mounted on the frame, and the pole piece insertion and cutting device 10 is located at a pole piece winding station of the winding head 102.
The pole piece insertion and cutting device 10 includes a mounting base 1, a cutting unit 2, an insertion unit 3, a guide unit 4, a first driving unit 51, a second driving unit 52, a first position sensor 61, and a second position sensor 62.
Specifically, the mount 1 is mounted on the frame 101, the mount 1 is provided with a first guide rail 11 and a second guide rail 12 extending toward the winding head 102, and the first guide rail 11 and the second guide rail 12 are parallel to each other. The first driving unit 51 and the second driving unit 52 are both mounted on the mounting base. Preferably, the first driving unit 51 includes a motor 511 and a ball screw mechanism 512, the motor 511 is mounted on the mounting seat 1, a driving end of the motor 511 is fixedly connected with an end of a screw of the ball screw mechanism 512, and an extending direction of the screw is parallel to an extending direction of the first guide rail 11; the second driving unit 52 includes a motor 521 and a ball screw mechanism 522, the motor 521 is mounted on the mount 1, a driving end of the motor 521 is fixedly connected with an end portion of a screw of the ball screw mechanism 522, and an extending direction of the screw is parallel to an extending direction of the second rail 12. Of course, the first driving unit 51 and the second driving unit 52 may also use an air cylinder or an oil cylinder.
The cutting unit 2 is used for cutting the pole piece delivered by the pole piece inserting and cutting device 10, and referring to fig. 3, and in combination with fig. 1 and 2, the cutting unit 2 includes a first connecting seat 21, a cutter assembly 22, a reset assembly 23 and a guide assembly 24. The first connecting seat 21 is slidably connected with the first guide rail 11, and the first connecting seat 21 is fixedly connected with a nut of the ball screw mechanism 512, so that the first driving unit 51 can drive the cutting unit 2 to slide along the first guide rail 11. The first driving unit 51 controls the movement of the cutting unit 2 using the ball screw structure, so that the cutting unit 2 can have more accurate movement accuracy, and the movement of the cutting unit 2 can be made more reliable.
The cutter assembly 22 is slidably mounted on the first connection seat 21, and in particular, the cutter assembly 22 includes a cutter 221 and a cutter holder 222, the cutter holder 222 is provided with a guide rail extending toward the first connection seat 21, the cutter holder 222 is slidably connected with the first connection seat 21 through the guide rail, in addition, a channel is formed between the cutter holder 222 and the first connection seat 21, and a pole piece is disposed in the channel. The cutter 221 is mounted on the cutter holder 222, and the blade portion of the cutter 221 is disposed toward the first coupling seat 21.
The reset assembly 23 is connected between the cutter assembly 22 and the first connecting seat 21, specifically, the reset assembly 23 is connected between the first connecting seat 21 and the knife rest 222, the reset assembly 23 constantly drives the knife rest 222 to move back to the first connecting seat 21, and the reset assembly 23 plays a reset role on the movement of the knife rest 222. Preferably, the reset component 23 adopts a cylinder, a seat body of the cylinder is mounted on the first connecting seat 21, a driving end of the cylinder is connected with the knife rest 222, and the driving end of the cylinder is in a constant retraction state in a natural state. Of course, the reset assembly 23 may also use an oil cylinder or an elastic member, and when the oil cylinder or the elastic member is used as the reset assembly, the function of constantly driving the tool rest 222 to move away from the first connecting seat 21 is also required, and the reset function is performed on the tool rest 222. In addition, the cylinder, the oil cylinder or the elastic piece has good damping performance, and the cylinder or the elastic piece is adopted as the reset component 23, so that the stability of the cutter component 22 during reset can be ensured, and the impact force generated during reset of the cutter component 22 can be effectively reduced.
The guide assembly 24 is mounted to the cutter assembly 22, and in particular, the guide assembly 24 is mounted to the knife block 222 of the cutter assembly 22. Preferably, the guide assembly 24 is a guide wheel that is rotatably mounted about its own axis on the tool holder 222.
As shown in fig. 1 and 2, the insertion unit 3 is slidably connected to the second rail 12 of the mounting base 1, the insertion unit 3 is located at the upstream end of the cutting unit 2 in the feeding direction X of the insertion unit 3, and the line connecting the insertion unit 3 and the cutting unit 2 is parallel to the first rail 11.
Specifically, the insertion unit 3 includes a second connection holder 31 and a clamping assembly 32, the second connection holder 31 is slidably connected with the second guide rail 12, and the second connection holder 31 is fixedly connected with a nut of the ball screw mechanism 522 of the second driving unit 52, so that the first driving unit 51 can drive the insertion unit 3 to slide along the second guide rail 12. The second driving unit 52 controls the movement of the insertion unit 3 using the ball screw, so that the insertion unit 3 can have more accurate movement accuracy, and the movement of the cutting unit 2 can be made more reliable.
The clamping assembly 32 is slidably mounted on the second connecting seat 31, specifically, the clamping assembly 32 includes a driving mechanism 321 and a clamping frame 322, the clamping frame 322 is provided with a guide rail extending toward the second connecting seat 31, the clamping frame 322 is slidably connected with the second connecting seat 31 through the guide rail, a channel is formed between the clamping frame 322 and the second connecting seat 31, and the pole piece is disposed in the channel.
The driving mechanism 321 is connected between the second connecting seat 31 and the clamping frame 322, and the driving mechanism 321 is used for driving the clamping part of the clamping frame 322 to move towards the second connecting seat 31 so as to clamp the pole piece in the channel, so that when the second driving unit 52 drives the inserting unit 3 to move towards the winding head 102, the inserting unit 3 can deliver the pole piece to the winding station of the winding head 102.
Preferably, the clamping assembly 32 further comprises a guide plate set 323, wherein the guide plate set 323 comprises two guide plates which are oppositely arranged and respectively arranged on the second connecting seat 31 and the clamping frame 322. By providing the guide plate group 323, the insertion unit 3 can shape the pole piece when delivering the pole piece to the winding head 102, so that the pole piece can be inserted onto the winding needle of the winding head 102.
Referring to fig. 4, and in combination with fig. 1 and 2, the guide unit 4 is mounted on the frame 101, and the guide unit 4 is located at the downstream end of the insertion unit 3 in the feeding direction X of the insertion unit 3. The insertion unit includes a first guide holder 41 and a first driving mechanism 42, and the first guide holder 41 is provided with a first guide surface 411 extending from an upstream end in the feeding direction X to a downstream end in the feeding direction X. As shown in fig. 5, on the projection of the pole piece inserted into the mounting surface of the cutting device 10, the vertical distance L1 between the end of the first guide surface 411 near the insertion unit 3 and the second guide rail 12 is smaller than the vertical distance L2 between the end of the first guide surface 411 away from the insertion unit 3 and the second guide rail 12, and the guide assembly 24 of the cutting unit 2 is disposed toward the first guide holder 41. The first driving unit 51 is used for moving the guide assembly 24 along the feeding direction X to abut against the first guide surface 411.
Preferably, the guide assembly 24 moves opposite or opposite to the first guide seat 41 along the direction of the guide assembly 24, i.e. towards the first guide seat 41, specifically, the first driving mechanism 42 is mounted on the frame 101, the driving end of the first driving mechanism 42 is connected to the first guide seat 41, and the first driving mechanism 42 is used for driving the first guide seat 41 to move along the direction of the guide assembly 24 relative to the guide assembly. So that when the insertion unit 3 delivers the pole piece to the winding head 102, the first driving mechanism 42 drives the first guide seat 41 to be far away from the cutting unit 2, so that the guide assembly 24 of the cutting unit 2 following the movement of the insertion unit 3 is prevented from abutting the first guide surface 411 of the first guide seat 41, and further the pole piece is prevented from being cut off in the delivery process, and the pole piece is ensured to be delivered normally.
Further, the insertion unit 3 further includes a second guide roller 33, and the second guide roller 33 is mounted on a clamping frame 322 of the clamping assembly 32. The guiding unit 4 further comprises a second guiding seat 43, the second guiding seat 43 is mounted on the frame 101, and the second guiding seat 43 is located at the upstream end of the first guiding seat 41 along the feeding direction X. The second guide seat 43 is provided with a second guide surface 431 extending from an upstream end of the feeding direction X to a downstream end of the feeding direction X, and a vertical distance L4 between an end of the second guide surface 431 close to the cutting unit 2 and the second guide rail 12 is greater than a vertical distance L3 between an end of the second guide surface 431 far from the cutting unit 2 and the second guide rail 12. The second guide wheel 23 is disposed towards the second guide seat 43, and the second driving unit 52 can drive the second guide rail 12 of the insertion unit 3 to move along the feeding direction X to abut against the second guide surface 431. Through setting up second guide pulley 33 and setting up second guide holder 43 on clamping frame 322, can effectually guarantee to insert unit 3 when being in the initial position, the clamping part of clamping frame 322 keeps away from the body of second connecting seat 31, and the passageway between clamping frame 322 and the second connecting seat 31 is open state, prevents to coil head 102 at the winding in-process, because insert unit 3 tightly lead to coiling 102 unable to coil the polar plate.
As shown in fig. 2, the first position sensor 61 is mounted on the mounting base 1, the detection end of the first position sensor 61 is disposed towards the cutting unit 2, and the first position sensor 61 is used for detecting and controlling the limit position of the movement of the cutting unit 2, so as to avoid the cutting unit 2 from colliding with the winding head 102 or the insertion unit 3 due to crossing the limit position. The second position sensor 62 is installed on the installation seat 1, the detection end of the second position sensor 62 is arranged towards the insertion unit 3, the second position sensor 62 is used for detecting and controlling the limit position of the movement of the insertion unit 3, and the insertion unit 3 is prevented from colliding with the cutting unit 2 or other unit components of the cylindrical battery cell sheet-making winder due to the fact that the limit position is crossed.
Referring to fig. 1, 5 and 6, the pole piece insertion and cutting device 10 operates as follows:
when the cylindrical cell sheet winding machine winds the pole piece, first, the second driving unit 52 of the pole piece insertion and cutting device 10 drives the insertion unit 3 to slide along the second guide rail 12, so that the insertion unit 3 moves toward the winding head 102. Meanwhile, the driving mechanism 321 drives the clamping portion of the clamping frame 322 to move toward the second connecting seat 31. At this time, however, the second guide wheel 33 on the clamping frame 322 is also abutted against the second guide surface 431 of the second guide seat 43, so that the clamping frame 322 is temporarily in a state of being clamped by the pole piece. With the movement of the second connecting seat 31, the second guide wheel 33 moves along the second guiding surface 431, so that the clamping frame 322 gradually clamps the pole piece. The clamping frame 322 just clamps the pole piece when the second guide wheel 33 is out of abutment with the second guide surface 431.
At the same time, the first driving unit 51 drives the cutting unit 2 to move along the first guide rail 11 towards the winding head 102, and as shown in fig. 1, the first driving mechanism 42 of the guiding unit 4 drives the first guide holder 41 to move towards the frame 101 away from the cutting unit 2, so as to avoid that the guide wheel of the guiding assembly 24 of the cutting unit 2 abuts against the first guide surface 411 of the first guide holder 41, thereby preventing the pole piece from being cut off in the delivering process.
When the cutting unit 2 moves to the winding head 102, the first driving unit 51 controls the cutting unit 2 to stop moving. When the inserting unit 3 inserts the pole piece onto the winding needle of the winding head 102, the driving mechanism 321 drives the clamping part of the clamping frame 322 to move back to the second connecting seat 31, so that the clamping frame 322 releases the clamping of the pole piece.
Next, the second driving unit 52 drives the insertion unit 3 to reset, and at the same time, the first driving unit 51 drives the cutting unit 2 to reset, and the winding needle of the winding head 102 starts winding the pole piece. As shown in fig. 5, when the reset of the cutter unit 2 is completed, the first driving mechanism 42 of the guide unit 4 drives the first guide holder 41 to protrude.
When the pole piece length measuring mechanism of the cylindrical battery cell sheet winding machine detects that the winding needle of the winding head 102 is about to complete fixed-length winding of the pole piece, the first driving unit 51 drives the cutting unit 2 to move towards the winding head 102 along the first guide rail 11. When the cutting unit 2 moves to the first guide seat 41, the guide assembly 24 on the cutter assembly 22 starts to abut against the first guide surface 411 of the first guide seat 41, at this time, the guide assembly 24 moves along the first guide surface 411 along with the movement of the cutting unit 2, so that the guide assembly 24 gradually drives the cutter 221 on the cutter frame 222 to move toward the first connecting seat 21. As shown in fig. 6, when the cutting unit 2 moves to the extreme end of the first guiding surface 411 along the feeding direction X, the guiding assembly 24 just drives the cutter 221 on the knife rest 222 to cut off the pole piece, and the first driving unit 51 controls the cutting unit 2 to stop sliding. It should be noted that, in the process of cutting the pole piece by the cutting unit 2, the moving speed of the cutting unit 2 is equal to the linear speed of winding the winding needle of the winding head 102, and the position facing the edge of the cutting knife 221 at the moment when the cutting unit 2 starts to move is the end of the pole piece wound by the secondary pole piece.
Then, the winding needle of the winding head 102 continues to wind the end of the pole piece, which is not wound, and after the winding of the pole piece is completed, the winding head 102 moves the wound battery cell to the rubberizing station to rubberize the wound battery cell. The cutting unit 2 is reset under the driving of the first driving unit 51, and the first guide seat 41 is reset under the driving of the first driving mechanism 42, so as to wait for the next insertion and cutting of the pole piece.
Cylindrical cell pellet winder second embodiment:
the invention concept of the first embodiment of the cylindrical battery cell sheet winding machine is applied, and the second embodiment of the cylindrical battery cell sheet winding machine is different from the first embodiment in that a first guide seat of a guide unit of the second embodiment is fixedly arranged on a frame, a guide assembly of a cutting unit comprises a driving mechanism and a first guide wheel, the driving mechanism is arranged on a cutter rest of a cutter assembly, the first guide wheel is connected with a driving end of the driving mechanism, and the first guide wheel is arranged towards the first guide seat. The driving mechanism is used for driving the first guide wheel to move relative to or opposite to the first guide seat, namely, the driving mechanism drives the first guide wheel to extend or retract.
When the pole piece is inserted into the cutting device and delivered to the winding head, the driving mechanism drives the first guide wheel to move in the direction away from the first guide seat, namely, the driving mechanism drives the first guide wheel to retract, so that the first guide wheel is prevented from being contacted with the first guide surface of the first guide seat. When the pole piece is inserted into the cutting device to cut off the pole piece, the driving mechanism drives the first guide wheel to move relative to the first guide seat, namely, the driving mechanism drives the first guide wheel to extend out, so that when the first driving unit drives the cutting unit to cut off the pole piece, the first guide wheel can be contacted with the first guide surface of the first guide seat, and the first guide wheel pulls the cutter on the cutter frame to cut off the pole piece.
In summary, the invention enables the winding head of the cylindrical battery core sheet winding machine to not need to pause winding of the pole piece when the pole piece is cut by the cutting unit through the arrangement and structural design of the pole piece inserting and cutting device and the cylindrical battery core sheet winding machine, and the cutting unit can move along with the winding linear speed of the winding head, thereby realizing dynamic cutting of the pole piece, ensuring the continuity of the winding of the pole piece, and overcoming the defects of long response time and low response sensitivity of a sensing device of an air cylinder when the driving of the air cylinder is adopted as the main power.
The working method embodiment of the pole piece inserting and cutting device comprises the following steps:
the invention provides a working method of a pole piece inserting and cutting device, which uses the pole piece inserting and cutting device 10 in the first embodiment of the cylindrical battery core sheet making winding machine or the second embodiment of the cylindrical battery core sheet making winding machine to move and cut a pole piece, and the working method of the pole piece inserting and cutting device is described by taking the pole piece inserting and cutting device 10 of the first embodiment of the cylindrical battery core sheet making winding machine as an example, and comprises the following steps:
The pole piece inserting step:
when the cylindrical battery core sheet winding machine is to wind the pole piece, the second driving unit 52 of the pole piece insertion and cutting device 10 drives the insertion unit 3 to slide along the feeding direction X, that is, the insertion unit 3 slides along the second guide rail 12, so that the insertion unit 3 moves towards the winding head 102. Meanwhile, the driving mechanism 321 drives the clamping portion of the clamping frame 322 to move toward the second connecting seat 31. At this time, however, the second guide wheel 33 on the clamping frame 322 is also abutted against the second guide surface 431 of the second guide seat 43, so that the clamping frame 322 is temporarily in a state of being clamped by the pole piece. With the movement of the second connecting seat 31, the second guide wheel 33 moves along the second guiding surface 431, so that the clamping frame 322 gradually clamps the pole piece. The clamping frame 322 just clamps the pole piece when the second guide wheel 33 is out of abutment with the second guide surface 431.
At the same time, the first driving unit 51 drives the cutting unit 2 to move along the first guide rail 11 towards the winding head 102, and as shown in fig. 1, the first driving mechanism 42 of the guiding unit 4 drives the first guide holder 41 to move towards the frame 101 away from the cutting unit 2, so as to avoid that the guide wheel of the guiding assembly 24 of the cutting unit 2 abuts against the first guide surface 411 of the first guide holder 41, thereby preventing the pole piece from being cut off in the delivering process.
When the cutting unit 2 moves to the winding head 102, the first driving unit 51 controls the cutting unit 2 to stop moving. When the inserting unit 3 inserts the pole piece onto the winding needle of the winding head 102, the driving mechanism 321 drives the clamping part of the clamping frame 322 to move back to the second connecting seat 31, so that the clamping frame 322 releases the clamping of the pole piece.
Next, the second driving unit 52 drives the insertion unit 3 to reset, and at the same time, the first driving unit 51 drives the cutting unit 2 to reset, and the winding needle of the winding head 102 starts winding the pole piece. As shown in fig. 5, when the reset of the cutter unit 2 is completed, the first driving mechanism 42 of the guide unit 4 drives the first guide holder 41 to protrude.
And (3) cutting the adhesive tape:
when the pole piece length measuring mechanism of the cylindrical battery cell sheet winding machine detects that the winding needle of the winding head 102 is about to complete fixed-length winding of the pole piece, the first driving unit 51 drives the cutting unit 2 to move towards the winding head 102 along the first guide rail 11. When the cutting unit 2 moves to the head end of the first guiding surface of the first guiding seat 41, the guiding component 24 on the cutter component 22 starts to abut against the first guiding surface 411 of the first guiding seat 41, at this time, the guiding component 24 moves along the first guiding surface 411 along with the movement of the cutting unit 2, so that the guiding component 24 gradually drives the cutter 221 on the cutter frame 222 to move towards the first connecting seat 21. As shown in fig. 6, when the cutting unit 2 moves to the extreme end of the first guiding surface 411 along the feeding direction X, the guiding assembly 24 just drives the cutter 221 on the knife rest 222 to cut off the pole piece, and the first driving unit 51 controls the cutting unit 2 to stop sliding.
Resetting the cutting unit:
the winding needle of the winding head 102 continues to wind the end of the pole piece, which is not wound, and after the winding of the pole piece is completed, the winding head 102 moves the wound battery cell to the rubberizing station to rubberize the wound battery cell. After the cutting unit 2 cuts the pole piece, the first driving unit 51 resets the pole piece, and the first guide seat 41 resets the pole piece under the driving of the first driving mechanism 42, so as to wait for the next insertion and cutting of the pole piece.
Therefore, the working method of the pole piece inserting and cutting device has the advantages of high response speed, reliable work and high production efficiency.
Finally, it should be emphasized that the foregoing description is merely illustrative of the preferred embodiments of the invention, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the invention, and any such modifications, equivalents, improvements, etc. are intended to be included within the scope of the invention.
Claims (10)
1. The pole piece inserts cutting device, its characterized in that includes:
the mounting seat is provided with a first guide rail and a second guide rail, and the first guide rail is parallel to the second guide rail;
The cutting unit comprises a first connecting seat, a cutter assembly, a reset assembly and a guide assembly, wherein the first connecting seat is slidably connected with the first guide rail, the cutter assembly is slidably installed on the first connecting seat, the reset assembly is connected between the cutter assembly and the first connecting seat, the reset assembly forces the cutter assembly to move back to the first connecting seat, and the guide assembly is installed on the cutter assembly;
the inserting unit is slidably connected with the second guide rail, the inserting unit is positioned at the upstream end of the cutting unit in the feeding direction of the inserting unit, and the connecting line of the inserting unit and the cutting unit is parallel to the first guide rail;
the guide unit is positioned at the downstream end of the insertion unit along the feeding direction, the guide unit comprises a first guide seat, a first guide surface is arranged on the first guide seat in an extending manner from the upstream end of the feeding direction to the downstream end of the feeding direction, the projection of the first guide surface on the mounting surface of the pole piece insertion cutting device is smaller than the vertical distance between one end, close to the insertion unit, of the first guide surface and the second guide rail, the vertical distance between one end, away from the insertion unit, of the first guide surface and the second guide rail, the guide assembly is arranged towards the first guide seat, and the guide assembly can be in abutting fit with the first guide surface to force the cutter assembly to move towards the first connecting seat;
The driving end of the first driving unit is connected with the first connecting seat, and the first driving unit drives the guide assembly to move along the feeding direction to be adjacent to the first guide surface;
the driving end of the second driving unit is connected with the insertion unit, and the second driving unit drives the insertion unit to slide along the second guide rail.
2. The pole piece insertion cutting device of claim 1, wherein:
the guide assembly and the first guide seat can move in opposite directions or opposite directions along the direction of the guide assembly.
3. The pole piece insertion cutting device of claim 2, wherein:
the guide unit further comprises a first driving mechanism, the first driving mechanism is connected with the first guide seat, and the first driving mechanism drives the first guide seat to move along the direction of the guide assembly relative to the guide assembly.
4. The pole piece insertion cutting device of claim 2, wherein:
the guide assembly includes:
the second driving mechanism is arranged on the first connecting seat;
The first guide wheel is connected with the second driving mechanism, the first guide wheel faces the first guide seat, and the second driving mechanism drives the first guide wheel to move along the direction of the guide assembly relative to the first guide seat.
5. The pole piece insertion cutting device of claim 1, wherein:
the insertion unit includes:
the second connecting seat is slidably connected with the second guide rail, and the driving end of the second driving unit is connected with the second connecting seat;
and the clamping assembly is slidably mounted on the second connecting seat.
6. The pole piece insertion cutting device of claim 5, wherein:
the insertion unit further comprises a second guide wheel, and the second guide wheel is installed on the clamping assembly;
the guide unit further comprises a second guide seat, the second guide seat is located at the upstream end of the first guide seat along the feeding direction, a second guide surface is arranged on the second guide seat in an extending mode from the upstream end of the feeding direction to the downstream end of the feeding direction, the vertical distance between one end, close to the cutting unit, of the second guide surface and the second guide rail is larger than the vertical distance between one end, far away from the cutting unit, of the second guide surface and the second guide rail, the second guide wheel faces towards the second guide seat, and the second driving unit can drive the second guide wheel to move along the reverse direction of the feeding direction to be adjacent to the second guide surface.
7. The pole piece insertion cutting device according to any one of claims 1 to 6, wherein:
the pole piece inserting and cutting device further comprises:
the first position sensor is arranged on the mounting seat, and the detection end of the first position sensor is arranged towards the cutting unit;
the second position sensor is installed on the installation seat, and the detection end of the second position sensor is arranged towards the insertion unit.
8. A method of operating a pole piece insertion cutting device as claimed in any one of claims 1 to 7, the method comprising:
a pole piece inserting step, wherein the second driving unit drives the inserting unit to move towards the feeding direction, and after the inserting unit delivers the adhesive tape to the winding station, the second driving unit drives the inserting unit to reset;
a tape cutting step, wherein the first driving unit drives the cutting unit to move along the feeding direction, when the cutting unit moves to the head end of the first guide surface, the guide assembly is adjacent to the first guide surface, the guide assembly slides along the first guide surface along with the sliding of the cutting unit, the cutter assembly slides towards the tape along with the sliding of the guide assembly, and when the cutting unit moves to one end of the first guide surface away from the insertion unit, the cutter assembly cuts off the tape;
And resetting the cutting unit, wherein the first driving unit drives the cutting unit to move reversely along the feeding direction, so that the cutting unit is reset.
9. A cylindrical battery core sheet winder comprises
A frame;
the winding head is rotatably mounted on the frame around the axis of the winding head;
the pole piece inserting and cutting device is arranged on the frame;
the pole piece inserting and cutting device is characterized by comprising:
the mounting seat is mounted on the frame, a first guide rail and a second guide rail are arranged on the mounting seat in an extending way towards the winding head, and the first guide rail is parallel to the second guide rail;
the cutting unit comprises a first connecting seat, a cutter assembly, a reset assembly and a guide assembly, wherein the first connecting seat is slidably connected with the first guide rail, the cutter assembly is slidably installed on the first connecting seat, the reset assembly is connected between the cutter assembly and the first connecting seat, the reset assembly forces the cutter assembly to move back to the first connecting seat, and the guide assembly is installed on the cutter assembly;
The inserting unit is slidably connected with the second guide rail, the inserting unit is positioned at the upstream end of the cutting unit in the feeding direction of the inserting unit, and the connecting line of the inserting unit and the cutting unit is parallel to the first guide rail;
the guide unit is positioned at the downstream end of the insertion unit along the feeding direction, the guide unit comprises a first guide seat, a first guide surface is arranged on the first guide seat in an extending manner from the upstream end of the feeding direction to the downstream end of the feeding direction, the projection of the first guide surface on the mounting surface of the pole piece insertion cutting device is smaller than the vertical distance between one end, close to the insertion unit, of the first guide surface and the second guide rail, the vertical distance between the first guide surface and the first end, far from the insertion unit, of the second guide rail, the guide assembly is arranged towards the first guide seat, and the guide assembly can be in abutting fit with the first guide surface to force the cutter assembly to move towards the first connecting seat;
the driving end of the first driving unit is connected with the first connecting seat, and the first driving unit drives the guide assembly to move along the feeding direction to be adjacent to the first guide surface;
The driving end of the second driving unit is connected with the insertion unit, and the second driving unit drives the insertion unit to slide along the second guide rail.
10. The cylindrical cell pellet winder of claim 9, wherein:
the guide assembly and the first guide seat can move in opposite directions or opposite directions along the direction of the guide assembly.
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| CN201810738631.1A CN108666610B (en) | 2018-07-06 | 2018-07-06 | Pole piece inserting and cutting device, working method thereof and cylindrical battery core sheet making winding machine |
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| CN201810738631.1A CN108666610B (en) | 2018-07-06 | 2018-07-06 | Pole piece inserting and cutting device, working method thereof and cylindrical battery core sheet making winding machine |
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| CN108666610B true CN108666610B (en) | 2023-06-06 |
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| CN112234260A (en) * | 2019-07-15 | 2021-01-15 | 宁德时代新能源科技股份有限公司 | Pole piece winding equipment |
| CN110605896A (en) * | 2019-10-31 | 2019-12-24 | 广东利元亨智能装备股份有限公司 | Pole piece diaphragm overlapping method and device |
| CN113634655B (en) * | 2021-07-21 | 2023-06-02 | 珠海华冠科技股份有限公司 | Pole piece die cutting mechanism, winding device and battery core winding method |
| IT202100032015A1 (en) * | 2021-12-21 | 2023-06-21 | Gd Spa | Packaging machine and packaging method of a cylindrical electrochemical cell |
| WO2023119191A1 (en) * | 2021-12-21 | 2023-06-29 | G.D S.P.A. | Manufacturing machine and method for manufacturing a cylindrical electrochemical cell |
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