CN107225333B - Pole piece forming equipment - Google Patents

Pole piece forming equipment Download PDF

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Publication number
CN107225333B
CN107225333B CN201710547232.2A CN201710547232A CN107225333B CN 107225333 B CN107225333 B CN 107225333B CN 201710547232 A CN201710547232 A CN 201710547232A CN 107225333 B CN107225333 B CN 107225333B
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CN
China
Prior art keywords
roller
module
pole piece
raw material
laser cutting
Prior art date
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CN201710547232.2A
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Chinese (zh)
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CN107225333A (en
Inventor
林国栋
周宇超
张松岭
温燕修
田亮
宋玉立
黄胜武
张修冲
冀守恒
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Hymson Laser Technology Group Co Ltd
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Hymson Laser Technology Group Co Ltd
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Priority to CN201710547232.2A priority Critical patent/CN107225333B/en
Publication of CN107225333A publication Critical patent/CN107225333A/en
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Publication of CN107225333B publication Critical patent/CN107225333B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36Removing material
    • B23K26/38Removing material by boring or cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70Auxiliary operations or equipment
    • B23K26/702Auxiliary equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B26D1/085Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/16Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like
    • B26D1/165Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like for thin material, e.g. for sheets, strips or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D9/00Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention relates to the field of automatic equipment, and discloses pole piece forming equipment which comprises a feeding module, a laser cutting module and a receiving module, wherein the feeding module is used for supplying a raw material belt to be cut to the laser cutting module, the raw material belt is formed into a pole piece through the laser cutting module, and the pole piece is collected by the receiving module. According to the invention, the pole piece can be directly formed from the raw material belt through the cooperative matching of the feeding module, the laser cutting module and the receiving module, the raw material belt does not need to flow between different devices, the production efficiency is increased, and the cost of transferring, managing and intermediate storage is reduced.

Description

Pole piece forming equipment
Technical Field
The invention relates to the field of automation equipment, in particular to automation equipment for producing lithium batteries, and especially relates to automation equipment for pole piece forming.
Background
The pole piece is one of the important structures on the battery, and as shown in fig. 1, the pole piece comprises a substrate and pole lugs distributed on one side or both sides of the substrate. The raw material strip for preparing the pole piece is generally wider than a single pole piece, and as shown in fig. 2, the raw material strip is provided with a plurality of coating areas and blank areas which are spaced from each other. The current pole piece production steps are that the outline of the pole lug is formed in the blank area in a die cutting mode and the like, and then the outline of the base piece is formed along the boundary between the blank area and the coating area in a die cutting mode and the like, so that the separation of the pole piece and the raw material belt is realized. In the prior art, the feeding of the raw material belt, the forming of the tab, the forming of the substrate and the receiving of the pole piece relate to different equipment, the raw material belt needs to circulate among different equipment in the production process, the production efficiency is reduced, the cost of transferring, managing and storing in the middle is increased, and the requirement of large-scale production is difficult to adapt.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides pole piece forming equipment which is used for solving the problems of low production efficiency, high transportation, management and intermediate storage cost in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a pole piece former, includes material loading module, laser cutting module and receipts material module, and wherein, the material loading module is used for supplying the raw materials area of waiting to cut to the laser cutting module, and the raw materials area is through the fashioned pole piece of laser cutting module, and the pole piece is collected by receipts material module.
As a further improvement of the scheme, the laser cutting module comprises a multi-section cutting roller and a laser light source, wherein
The multi-section cutting roller comprises two or more than two rotating rollers and two or more than two static rollers, wherein the rotating rollers are coaxial with the static rollers, have the same diameter and are distributed at intervals along the axial direction, grooves are formed in the static rollers, and the rotating rollers can rotate relative to the static rollers;
the laser light source may emit a laser beam toward the groove.
As a further improvement of the above, the raw material belt includes a coating region and a blank region arranged at intervals, wherein the sum of the widths of the adjacent stationary roller and the rotating roller is equal to the sum of the widths of the adjacent coating region and the blank region.
As a further improvement of the above, the width of the coating zone is equal to the width of the rotating roller.
As a further improvement mode of the scheme, the laser cutting module further comprises a waste roller which is coaxial with the static roller and the rotating roller and has the same diameter, the waste roller comprises a first roller and a second roller, a negative pressure cavity is arranged between the first roller and the second roller, a plurality of air holes are formed in the circumferential direction of the second roller, the first roller is kept static, the second roller can rotate relative to the first roller and rotate along with the second roller, the air holes can be communicated with the negative pressure cavity to generate adsorption force, the waste roller can be disconnected with the negative pressure cavity, and the adsorption force disappears.
As a further improvement mode of the scheme, a purging cavity is further arranged in the first roller, the purging cavity is arranged at the rear of the negative pressure cavity along the rotation direction of the second roller, and air holes are communicated with the purging cavity to blow out air flow outwards.
As a further improvement mode of the scheme, the laser cutting module further comprises a dust removing structure, wherein the dust removing structure comprises
The dust collection flow passage is arranged on the static roller and is communicated with the dust collection opening, one end of the dust collection flow passage is communicated with the groove, and the other end of the dust collection flow passage is communicated with the dust collection opening;
and/or a dust hood arranged between the multi-section cutting roller and the laser light source, wherein the dust hood covers the groove, and dust removal equipment is further arranged on the dust hood and used for forming sweeping air flow or sucking air flow in the dust hood.
As a further improvement mode of the scheme, the device comprises two laser cutting modules, wherein the former laser cutting module is used for forming pole pieces and semi-finished product material strips at intervals on the raw material strips, and the latter laser cutting module is used for further forming the semi-finished product material strips into the pole pieces.
As a further improvement mode of the scheme, the device further comprises a tape connecting module arranged between the feeding module and the laser cutting module, wherein the tape connecting module comprises a tape connecting platform and an adhesive module, and the adhesive module can move along the width direction of the raw material tape relatively to the tape connecting platform so as to release the adhesive tape.
As a further improvement mode of the scheme, the bonding module comprises a substrate and a substrate driving device for driving the substrate to move along the width direction of the raw material belt, wherein an adhesive tape discharging roller, a pressing roller and a cutting knife are arranged on the substrate, and the pressing roller and the cutting knife are arranged above the belt receiving platform and can independently move up and down relatively to the belt receiving platform.
As a further improvement mode of the scheme, the device further comprises an adhesive tape cutting module arranged between the tape connecting module and the laser cutting module, wherein the adhesive tape cutting module comprises a connecting arm, a connecting arm driving device and a plurality of blades, the blades are arranged on the connecting arm in parallel along the width direction of the raw material tape, and the connecting arm can drive the blades on the connecting arm to perform cutting action and reset action after cutting under the driving of the connecting arm driving device.
As the further improvement mode of above-mentioned scheme, still including locating the pressure area module between connecing area module and the laser cutting module, the pressure area module includes compression roller, compression roller drive arrangement, tension sensor and transition roller, is equipped with the clearance that supplies the raw materials area to pass through between compression roller and the transition roller, and tension sensor is used for detecting the tension in raw materials area, and when the tension in raw materials area is less than the setting value, the compression roller is driven by compression roller drive arrangement and is compressed tightly the raw materials area on the transition roller.
As a further improvement mode of the scheme, the belt pressing module comprises a base plate, a first power source, a driving plate and a second power source, wherein the first power source is fixed on the base plate, the second power source is fixed on the driving plate, the press roller is driven by the second power source to move relative to the driving plate, the press roller, the driving plate and the second power source can be integrally driven by the first power source to move relative to the base plate, and the force application points of the first power source and the second power source are staggered along the length direction of the press roller.
As a further improvement mode of the scheme, the laser cutting device further comprises a dust removal module arranged between the laser cutting module and the material receiving module, wherein the dust removal module comprises a rotating shaft which is arranged in parallel, a plurality of brushes are axially connected to the rotating shaft, and the brushes can rotate along with the rotating shaft.
The beneficial effects of the invention are as follows:
according to the invention, the pole piece can be directly formed from the raw material belt through the cooperative matching of the feeding module, the laser cutting module and the receiving module, the raw material belt does not need to flow between different devices, the production efficiency is increased, and the cost of transferring, managing and intermediate storage is reduced;
in the preferred embodiment of the invention, a plurality of pole pieces can be formed on the raw material belt through the cooperative matching of the two laser cutting modules, thereby being beneficial to further increasing the production efficiency and improving the utilization rate of the raw material belt;
in a preferred embodiment of the present invention, a plurality of auxiliary function modules are further provided, including but not limited to a tape splicing module, a deviation rectifying module, a flattening module, a tape cutting module, a tape pressing module, a dust removing module, etc., and each module cooperates to perform automatic production.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic illustration of a pole piece produced in accordance with the present invention;
FIG. 2 is a schematic illustration of a raw material strip to which the present invention is applicable;
FIG. 3 is a schematic perspective view of one embodiment of the present invention;
FIG. 4 is a front view of one embodiment of the present invention;
FIG. 5 is a schematic perspective view of one embodiment of a laser cutting module according to the present invention;
FIG. 6 is an exploded view of one embodiment of a laser cutting module of the present invention;
FIG. 7 is a schematic perspective view of the multi-segment cutting roll of the present invention in one direction;
FIG. 8 is a schematic perspective view of the multi-segment cutting roll of the present invention in another orientation;
FIG. 9 is a schematic perspective view of one embodiment of a stationary roller of the present invention;
FIG. 10 is a schematic perspective view of one embodiment of a scrap roller of the present invention;
FIG. 11 is an exploded schematic view of one embodiment of a scrap roller of the present invention;
FIG. 12 is a schematic perspective view of an embodiment of a front dust collector of the invention;
FIG. 13 is a schematic perspective view of one embodiment of a laser light source of the present invention;
FIG. 14 is a schematic perspective view of one embodiment of a taping module of the present invention;
FIG. 15 is a schematic perspective view of one embodiment of a tape cutting module of the present invention;
FIG. 16 is a schematic perspective view of an embodiment of a dust removal module of the present invention;
FIG. 17 is a side view of a first embodiment of the belt module of the present invention;
FIG. 18 is a schematic perspective view of a press roller and a press roller driving apparatus of the present invention;
fig. 19 is a schematic view of a plurality of pole pieces formed on a raw material strip.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, front, rear, etc. used in the present invention are merely with respect to the mutual positional relationship of the respective constituent elements of the present invention in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
Referring to fig. 1, a schematic diagram of a pole piece produced in accordance with the present invention is shown. As shown, the pole piece comprises a substrate a and a tab b positioned on one side or both sides of the substrate a. Referring to fig. 2, a schematic diagram of a raw material strip to which the present invention is applied is shown. As shown, the stock strip includes a plurality of spaced apart coated areas for forming the substrate a of the pole piece and blank areas for forming the tabs b of the pole piece. By way of illustration, the stock strip comprises three application zones c 1, c2 and c3, and four blank zones d1, d2, d3 and d4.
In addition, the pole piece shown in fig. 1 is provided with tabs on both sides, but this is not meant to limit the invention, and the invention is equally applicable to the production of pole pieces having tabs on one side.
Referring to fig. 3 and 4, a perspective view and a front view of an embodiment of the present invention are shown, respectively. As shown in the figure, the main module of the invention comprises a feeding module 1, a laser cutting module 2, a receiving module 3 and a driving module, wherein the feeding module 1 continuously releases a raw material belt to be cut to the laser cutting module 2 under the driving of the driving module, the raw material belt is formed into a pole piece by the laser cutting module 2, and the formed pole piece is collected by the receiving module 3, so that uninterrupted automatic production is realized, the raw material belt does not need to flow between different devices, the production efficiency is increased, and the cost of transferring, managing and intermediate storing is reduced.
The feeding module 1 and the receiving module 3 in the invention can both adopt known techniques, such as a discharging roll and a receiving roll driven by a rotating roller, along with the rotation of the receiving roll and the discharging roll, the raw material belt wound on the discharging roll is gradually released, and the formed pole piece is gradually wound on the receiving roll, however, the feeding module 1 and the receiving module 3 can also adopt other known techniques, and the invention is not limited to this. In addition, the invention can also be provided with a plurality of transition rollers and tensioning rollers according to the requirement, and the number and the arrangement positions of the transition rollers and the tensioning rollers are not limited as well.
Referring to fig. 5 and 6, a perspective view and an exploded view of an embodiment of the laser cutting module according to the present invention are shown respectively. The laser cutting module comprises a frame 21, a plurality of sections of cutting rollers 22 and laser light sources 23, wherein the sections of cutting rollers 22 are horizontally arranged on the frame 21, the plurality of laser light sources 23 are arranged on the same side of the sections of cutting rollers 22, cutting laser can be emitted towards the sections of cutting rollers 22, and pole pieces are directly formed on a raw material belt by matching with the sections of cutting rollers 22.
Referring to fig. 7 and 8, there are shown perspective views of the multi-stage cutting roll of the present invention in different directions. As shown, the multi-section cutting roll comprises two or more rotating rolls 221 and two or more stationary rolls 222, and preferably also comprises scrap rolls 223 at both ends of the laser cutting module for pole piece formation. The rotating roller 221 and the stationary roller 222 are coaxial with the scrap roller 223 and have the same diameter, and the rotating roller 221 and the stationary roller 222 are axially spaced. The static roller 222 is kept static, the rotating roller 221 can rotate relative to the static roller 222, wherein the rotating roller 221 and the static roller 222 are used for matching with laser to realize the forming of the pole piece, and the waste roller 223 is used for collecting waste materials remained after forming.
Referring to fig. 9, a schematic perspective view of one embodiment of a stationary roll of the present invention is shown. As shown, the stationary roller 222 is preferably a disc structure, and has a groove 2221 formed on the circumference thereof, the groove 2221 is used to form a pole piece in cooperation with a laser light source, specifically, the stationary roller 222 tightens a blank area of a raw material belt, the groove 2221 is located at the back of the blank area, a cutting laser is emitted from the front of the blank area to the blank area, and a cutting motion is performed in the area of the groove 2221, so that the pole piece can be formed in combination with the motion of the raw material belt itself. Grooves 2221 are preferably provided on the far right side (left and right are defined in accordance with the orientation shown in fig. 9) of the stationary roller 222 so that the laser light can be emitted horizontally while ensuring that the incident direction of the laser light is perpendicular to the white space.
The laser cutting raw material belt can produce dust when, and the dust can bring the potential safety hazard if mix in the battery inside, based on this, multistage cutting roller still is equipped with dust removal structure, and dust removal structure is including setting up dust absorption runner 2222 and dust absorption mouth 2223 on stationary roller 222. The dust suction port 2223 is preferably provided at the other side of the stationary roller 222 with respect to the groove 2221, and is connected to a dust suction apparatus, and one end of the dust suction flow path 2222 communicates with the groove 2221, and the other end communicates with the dust suction port 2223, so that dust generated by cutting can be sucked away through the dust suction flow path 2222 in time. Further, to accommodate the position of the grooves 2221, the number of the dust collecting channels 2222 is preferably two, which are distributed along the upper and lower sides of the grooves 2221. The purpose of the two dust collection flow paths 2222 is to: since the grooves 2221 are formed in the middle of the stationary roller 222, dust generated by cutting may be scattered upward or downward, and two dust suction passages 2222 are provided to suck dust in two directions, thereby preventing dust from being retained in the stationary roller 222.
Referring to fig. 10 and 11, there is shown a perspective view and an exploded view, respectively, of one embodiment of the scrap roller of the present invention. The waste roller is used for adsorbing waste in the cutting process, avoiding waste movement to influence production, releasing waste when the waste moves to a set position, and realizing centralized collection of the waste. To achieve the above, as shown, the scrap roller 223 preferably includes a first roller 224 and a second roller 225, the first roller 224 being coaxial with and of equal diameter to the second roller 225, the first roller 224 being stationary and the second roller 225 being rotatable relative to the first roller.
The first roller 224 is provided with a negative pressure chamber 2241, the negative pressure chamber 2241 is closed with the second roller 225 by a cover plate 226, the cover plate 226 is provided with a joint 227, and the joint 227 is used for being connected with a vacuum pumping device to form a negative pressure environment in the negative pressure chamber 2241. Preferably, the negative pressure chamber 2241 extends from the top of the first roller to the bottom of the first roller in the circumferential direction of the first roller 224.
Preferably, a purge chamber 2242 is further provided in the first roller 224, and the purge chamber 2242 is provided behind the negative pressure chamber 2241 in the rotation direction (clockwise in the drawing) of the second roller 225. The purge chamber 2242 is closed with the second roller 225 by a cover plate 228, and a joint 229 is provided on the cover plate 228, the joint 229 being adapted to be connected with a blower device.
The second roller 225 is provided with a plurality of air holes 2251 in the circumferential direction, and the air holes 2251 on the second roller 225 circulate through the negative pressure chamber 2241 and the purge chamber 2242 as the second roller 225 rotates. The air hole 2251 passing through the negative pressure chamber 2241 communicates with the negative pressure chamber 2241 to generate an adsorption force, thereby adsorbing the waste material on the second roller 225, and ensuring that the waste material and the second roller 321 rotate synchronously; since the distribution range of the negative pressure chamber 2241 is 1/2 of the circumference of the first roller 224, when the waste moves under the first roller 224 along with the second roller 225, the air holes 2251 are disconnected from the negative pressure chamber 2241, the adsorption force disappears, and the waste is separated from the second roller 225, and simultaneously, the air holes 2251 of the purge chamber 2242 are communicated with the purge chamber 2242 to generate an air flow to blow the waste to drop.
The rotating roller 221, the static roller 222 and the scrap roller 223 in the invention are preferably in a modularized design, and the number and the size (including but not limited to the width of the roller and the diameter of the roller) of the rotating roller 221, the static roller 222 and the scrap roller 223 can be adjusted according to the width of the pole piece, the number of pole pieces formed on the raw material belt simultaneously and the like.
The dust collection flow passage 2222 and the dust collection opening 2223 are used for realizing back dust collection of the pole piece, and in addition, the dust collection mechanism of the present invention further comprises a front dust collection structure 24, and referring to fig. 12, a schematic perspective view of an embodiment of the front dust collection device of the present invention is shown. The front dust removing device includes a dust hood 241, a dust removing apparatus 242, and a dust collecting duct 243.
The dust hood 241 is hollow, and a side facing the laser light source 23 is provided with a first opening 2411, and a side facing the multi-stage cutting roll 22 is provided with a second opening (not shown), wherein the first opening 2411 and the second opening are used for passing cutting laser, and the second opening is also used for covering the groove 2221, so that the pole piece forming operation is performed in the dust hood 241. Preferably, arc-shaped grooves 2412 matching with the circumferences of the multi-stage cutting rolls 22 are further provided on both vertical side walls of the dust hood 241 to reduce the gap between the dust hood 241 and the multi-stage cutting rolls 22 as much as possible.
The dust removing device 242 is used to form a purge flow or a suction flow in the dust hood 241, thereby removing dust retained in the dust hood 241. Preferably, the dust removing device 242 is fixed on the top of the dust removing cover 241 in this embodiment, and performs downward blowing. The dust collecting pipe 243 is provided at the bottom of the dust hood 241 corresponding to the dust removing device 242 for collecting dust.
Preferably, the dust hood 241 is further driven to move in a horizontal direction by a driving mechanism 244 (such as a cylinder-rail-slider mechanism) to accommodate multiple cutting rolls of different diameters.
Referring to fig. 13, a schematic perspective view of one embodiment of a laser light source of the present invention is shown. As shown in the drawing, a plurality of laser light sources 23 are provided in the present embodiment, and the laser light sources 23 respectively correspond to grooves 2221 on the multi-stage cutting roller 22. The laser light source 23 is preferably movable in the axial and/or radial direction of the multi-stage cutting roll, in this embodiment both in the axial direction and in the radial direction of the multi-stage cutting roll. Thus, when the width or number of rollers changes, the laser light sources 23 can adjust the interval between the light sources and the number of light sources participating in cutting by moving in the axial direction; when the diameter of the roller changes, the laser light source 23 can adjust the focal length of the laser by moving in the radial direction.
The axial movement and the radial movement of the laser light source 23 can be realized by conventional technical means, and the short-range radial movement in this embodiment is preferably driven by a driving mechanism 231 (cylinder-rail driving system), and the long-range axial movement is driven by a driving mechanism 232 (motor-screw seat) driving system.
The multi-stage cutting roller 22 is used for tightening the raw material belt, and ensures that the sum of the widths of the adjacent stationary roller 222 and the rotating roller 221 is equal to the sum of the widths of the adjacent coating area and the blank area, preferably, the width of the coating area is equal to the width of the rotating roller 221, namely, the coating area corresponds to the rotating roller 221 one by one, the blank area corresponds to the stationary roller 222 one by one, and the number of cutting lasers corresponds to the number of blank areas.
When the raw material belt moves forward by the drive mechanism, it can rotate the rotating roller 221 by friction. The rotating roller 221 is used for supporting the coating area, and simultaneously reduces the friction force between the rotating roller and the raw material belt in a rolling mode, so that the raw material belt is prevented from stretching and deforming due to overlarge friction force, and the cutting precision is prevented from being influenced. The stationary roller 222 remains stationary.
The laser source 23 emits a cutting beam toward the corresponding groove 2221, and the cutting beam can move relative to the raw material strip, the movement direction includes not limited to the width direction of the raw material strip, and various lugs (saw-tooth shape in fig. 1) with different shapes can be formed by combining the movement of the raw material strip, and the pole piece is separated from the raw material strip. The cut waste is collected by a waste roller (specific collection methods are described above).
The present invention is further provided with other auxiliary function modules, such as a tape splicing module, and referring to fig. 4 and 14, fig. 14 is a schematic perspective view of an embodiment of the tape splicing module of the present invention. The tape connecting module 4 is arranged between the feeding module 1 and the laser cutting module 2, and is specifically positioned at one side close to the feeding module 1. When the last raw material belt is used up, the belt connecting operation needs to be carried out timely, and the belt connecting module can be used for bonding the tail end of the last raw material belt and the head end of the next raw material belt by using the adhesive tape so as to ensure the production continuity.
The tape connecting module comprises a tape connecting platform arranged on the integral frame and an adhesive module arranged above the tape connecting platform. Specifically, the bonding module includes a substrate 41 and a substrate driving device 42 for driving the substrate 41 to move, and the substrate driving device 42 preferably adopts a motor-synchronous belt transmission system in the present embodiment. The substrate 42 is provided with an adhesive tape discharging roller 43, a press roller 44, a cutting knife 45, an air cylinder 46, an air cylinder 47 and a plurality of transition rollers, and the end part of the adhesive tape 48 is guided to the lower part of the press roller 44 by the transition rollers. When the adhesive tape splicing device is used, firstly, a worker manually aligns the tail end of the last raw material tape and the head end of the next raw material tape on the tape splicing platform, the joint of the raw material tapes is positioned under the press roller 44, then the air cylinder 46 is started, the press roller 44 moves downwards to press the adhesive tape on the joint, then the substrate 42 is driven by the substrate driving device 42 to drive the adhesive tape discharging roller 43, the press roller 44 and the cutting knife 45 to move integrally along the width direction of the material tapes until the adhesive tape covers the whole joint, and finally the air cylinder 47 is started, and the cutting knife 45 moves downwards to cut the adhesive tape, so that the whole tape splicing process is completed.
Because the laser can not cut the adhesive tape, the laser cutting module can not cut the joint of the two raw material tapes into a plurality of pole pieces, and based on the pole pieces, the auxiliary function module further comprises an adhesive tape cutting module 5. Referring to fig. 4 and 15, fig. 15 is a perspective view of an embodiment of the tape cutting module according to the present invention. As shown in the figure, the tape cutting device 5 includes a cutter mechanism 51, a link arm 52, and a link arm driving device 53. The cutter mechanism 51 is provided with a blade at a cutting position corresponding to the material belt, and the connecting arm 52 rotates under the drive of the connecting arm driving device 53 to drive the blade on the cutter mechanism 51 to perform cutting action and reset action after cutting.
The cutter mechanism 51 includes a cutter spindle 511 and blades 512, the cutter spindle 511 is arranged along the width direction of the raw material belt, a plurality of blades 512 are installed on the cutter spindle 511 in parallel, and the distance between the blades 512 is adjustable so as to adapt to the raw material belts with different sizes. Preferably, the blade 512 in this embodiment is a circular blade, and the circumferential portion thereof is the edge portion of the blade, and the circular blade can rotate around its own axis to improve cutting efficiency. Specifically, the circular blade is fixedly connected to the cutter spindle 511 and can rotate synchronously with the cutter spindle 511, two ends of the cutter spindle 511 are rotatably connected to the connecting arms 52 on two sides through bearings, and at least one connecting arm 52 is provided with a motor-synchronous belt driving mechanism 54, and the motor-synchronous belt driving mechanism 54 is used for driving the cutter spindle 511 to rotate.
The connecting arm 52 is preferably an "L" shaped arm, one end of which is provided with the cutter mechanism 51 described above, and the other end of which is connected to the connecting arm driving device 53.
The connecting arm driving device 53 in the present invention preferably adopts a motor-synchronous belt driving mechanism, that is, the connecting arm driving device comprises a motor 531, a driving wheel 532, a driven wheel 533, a synchronous belt 534 and a driving shaft 535, wherein the driving wheel 532 is fixedly connected with a main shaft of the motor 531, the synchronous belt 534 is wound on the driving wheel 532 and the driven wheel 533, and two ends of the driving shaft 535 are fixedly connected with the driven wheel 533 and the connecting arm 52 respectively, so that the connecting arm 52 rotates around the driving shaft 535 along with the rotation of the motor 531, and further drives the cutter mechanism 51 mounted at the other end of the connecting arm 52 to swing greatly. In general, the cutter mechanism 51 is in a standby state, and when the adhesive tape needs to be cut, the cutter mechanism 51 swings downward to a certain angle and then contacts the raw material tape, and the cutter mechanism cuts the tape-receiving portion of the raw material tape along with the rotation of the blade and the movement of the raw material tape.
In addition, the invention preferably adopts a motor with a locking function, and can keep the connecting arm 52 at the current position when the sudden state of gas and power failure occurs, thereby avoiding safety accidents.
The chips generated in the tape cutting process bring about great potential safety hazards, and based on the potential safety hazards, the tape cutting module is further provided with a dust removing device (not shown) for removing dust from the cut part. Preferably, the dust removing device comprises a first dust removing device and a second dust removing device which are respectively arranged at two sides of the material belt, and the first dust removing device and the second dust removing device respectively remove dust on the front surface and the back surface of the cutting part. Further, the first dust removing device and the second dust removing device both adopt suction pipes.
The auxiliary function module further comprises a dust removal module 6 arranged between the laser cutting module 2 and the material receiving module 3, and the dust removal module 6 can remove dust in the last step before the pole piece is received. Referring to fig. 4 and 16, fig. 16 is a schematic perspective view of an embodiment of the dust removing module of the present invention. As shown in the figure, the dust removal module 6 includes a rotating shaft 61 disposed opposite to each other, a plurality of brushes 62 are disposed on the rotating shaft 61 along an axial direction, and the rotating shaft 61 can drive the brushes 62 to rotate under the driving of a motor 63. When the pole piece is in operation, the pole piece passes through the brushes 62 at the two sides, and dust at the front side and the back side of the pole piece can be removed along with the rotation of the brushes 62.
Preferably, the axial distance between the shafts 61 is adjustable by the air cylinder 64, thereby adjusting the gap between the brushes at both sides.
The auxiliary function module further comprises a belt pressing module 7. Referring to fig. 4 and 17, fig. 17 is a side view of a first embodiment of the belt module of the present invention, with one side frame hidden. As shown, the belt pressing device includes a pressing roller 71, a pressing roller driving device 72, and a tension sensor (not shown). In a normal production process, the raw material tape is wound around each transition roller in turn and continuously moves forward, and a gap through which the raw material tape passes is provided between the pressing roller 71 and the transition roller 73. The tension sensor detects the tension value of the raw material belt in real time; if the raw material belt breaks, the tension value of the raw material belt is rapidly reduced, and when the tension of the raw material belt is smaller than a set value, the press roller 71 is driven by the press roller driving device 72 to press the raw material belt on the transition roller, so that the deviation of the raw material belt at the rear section is avoided, and the rapid recovery of production after the belt splicing operation is ensured.
Referring to fig. 18, there is shown a schematic perspective view of the press roller and the press roller driving device of the present invention. As shown, the platen driving apparatus includes a base plate 721 and a cylinder 722, a driving plate 723, a platen 724 and a cylinder 725. The base plate 721 is fixed to the equipment rack, and the cylinder 722 is fixed to the base plate 721 as a preferred embodiment of the first power source, and its driving shaft is fixedly connected to the driving plate 723.
The cylinder 725 is fixed to the driving plate 723 as a preferred embodiment of the second power source, the platen 71 is fixed to the platen 724, the driving shaft of the cylinder 725 is fixed to the platen 724, and the platen 71 moves relative to the platen 724 with the driving of the cylinder 725.
Preferably, the points of application of the air cylinders 722 and 725 are offset from each other along the length direction of the pressing roller 71, and the purpose of this arrangement is: the point of application of the pressure roller 71 to the web can be increased to better secure the web.
In the above embodiments, the cylinders 722 and 725 may be replaced by other well-known power sources, and the present invention is not limited in detail herein. In addition, if the tension of the material belt is smaller, two mutually staggered air cylinders are not required, and one air cylinder is adopted to drive the compression roller.
In addition, the invention is also provided with other auxiliary function modules, including but not limited to a deviation rectifying module 8 and a flattening module which are arranged between the feeding module 1 and the laser cutting module 2. The deviation correcting module 8 can drive the raw material belt to translate and/or rotate, so that the raw material belt is prevented from deviating from a set track, the flattening module preferably comprises a flattening roller, the flattening roller is an arc roller with the middle protruding outwards, and wrinkles on the raw material belt can be eliminated along with the rotation of the flattening roller.
In combination with the above embodiment and fig. 4, the working procedure of the present invention is as follows: under the drive of a driving module (such as a driving roller), the raw material belt is released by the feeding module 1 and sequentially passes through the belt receiving module 4, the deviation rectifying module 8, the flattening module, the adhesive tape cutting module 5, the belt pressing module 7, the laser cutting module 2, the dust removing module 6, the material collecting module 3 and transition rollers among the modules, so that the operations of feeding, flattening, laser forming of pole pieces, dust removal, material collection and the like are automatically and continuously carried out, the operations of deviation rectifying, raw material belt receiving, adhesive tape cutting, belt pressing and the like are carried out when necessary, and the continuous and stable production work is ensured.
In particular, the present invention sequentially provides two laser cutting modules 2 along the advancing direction of the raw material belt, so as to simultaneously form a plurality of pole pieces on the raw material belt, taking the raw material belt shown in fig. 2 as an example, four laser light sources 23 on the previous laser cutting module 2 respectively cut along the junction of the coating area c 1 and the blank area d1, the junction of the coating area c 1 and the blank area d2, the junction of the coating area c3 and the blank area d3, and the junction of the coating area c3 and the blank area d4, thereby dividing the raw material belt into a pole piece e1, a pole piece e2 and a semi-finished product belt e3 as shown in fig. 19-1, and in addition, it is also possible to form a waste belt e4 on both sides, wherein the semi-finished product belt e3 comprises the whole of the coating area c2, the blank area d2, and the blank area d 3. The semi-finished strip is then moved to the next laser cutting module 2, and the two laser sources 23 of the next laser cutting module 2 cut along the junction of the coating area c2 and the blank area d2 and the junction of the coating area c2 and the blank area d3, thereby forming the pole piece e5 and the scrap strip e6 shown in fig. 19-2 from the semi-finished strip.
Based on the above scheme, the invention is provided with two material receiving modules 3, wherein one material receiving module 3 corresponds to the previous laser cutting module 2 and is used for collecting the pole pieces e1 and e2, and the other material receiving module 3 corresponds to the next laser cutting module 2 and is used for collecting the pole piece e5.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.

Claims (10)

1. The pole piece forming equipment is characterized by comprising a feeding module, a laser cutting module and a receiving module, wherein the feeding module is used for supplying a raw material belt to be cut to the laser cutting module, the raw material belt forms a pole piece through the laser cutting module, and the pole piece is collected by the receiving module;
the pole piece forming equipment further comprises a tape connecting module arranged between the feeding module and the laser cutting module, wherein the tape connecting module comprises a tape connecting platform and an adhesive module, and the adhesive module can move along the width direction of the raw material tape relative to the tape connecting platform so as to release the adhesive tape;
the pole piece forming equipment further comprises a belt pressing module arranged between the belt receiving module and the laser cutting module, the belt pressing module comprises a pressing roller, a pressing roller driving device, a tension sensor and a transition roller, a gap for the raw material belt to pass through is arranged between the pressing roller and the transition roller, the tension sensor is used for detecting the tension of the raw material belt, and when the tension of the raw material belt is smaller than a set value, the pressing roller is driven by the pressing roller driving device to press the raw material belt on the transition roller;
the laser cutting module comprises a plurality of sections of cutting rollers and a laser light source, wherein the plurality of sections of cutting rollers comprise two or more than two rotating rollers and two or more than two static rollers, the rotating rollers are coaxial with the static rollers, have the same diameter and are distributed at intervals along the axial direction, grooves are formed in the static rollers, and the rotating rollers can rotate relative to the static rollers; the laser source can emit a laser beam to the groove;
the laser cutting module still include with the waste material roller of static roller, live-action roller coaxial and constant diameter, the waste material roller includes first roller and second roller, wherein be equipped with the negative pressure chamber between first roller and the second roller, be equipped with a plurality of gas pockets in the circumference of second roller, first roller keeps static, the second roller can be relative first roller rotates, and follows the rotation of second roller, the gas pocket can with the negative pressure chamber intercommunication is in order to produce the adsorption affinity, and can with the negative pressure chamber disconnection, the adsorption affinity disappears.
2. The pole piece forming device of claim 1, wherein the stock strip includes spaced apart coating and blank areas, wherein the sum of the widths of adjacent stationary and rotating rollers is equal to the sum of the widths of adjacent coating and blank areas.
3. The pole piece forming device of claim 2, wherein the width of the coating zone is equal to the width of the rotating roller.
4. The pole piece forming device according to claim 1, wherein a purge cavity is further provided in the first roller, the purge cavity is provided behind the negative pressure cavity in a rotation direction of the second roller, and the air hole is communicated with the purge cavity to blow out air flow.
5. The pole piece forming device of claim 1, wherein the laser cutting module further comprises a dust removal structure comprising
The dust collection flow passage is arranged on the static roller and is communicated with the dust collection opening, one end of the dust collection flow passage is communicated with the groove, and the other end of the dust collection flow passage is communicated with the dust collection opening;
and/or a dust hood arranged between the multi-section cutting roller and the laser light source, wherein the dust hood covers the groove, and dust removal equipment is further arranged on the dust hood and used for forming sweeping airflow or sucking airflow in the dust hood.
6. The pole piece forming device according to claim 1, comprising two laser cutting modules, wherein the former laser cutting module is used for forming pole pieces and semi-finished product material strips on the raw material strips at intervals, and the latter laser cutting module is used for further forming the semi-finished product material strips into pole pieces.
7. The pole piece forming device according to claim 1, wherein the bonding module comprises a substrate driving device for driving the substrate to move along the width direction of the raw material belt, an adhesive tape discharging roller, a pressing roller and a cutting knife are arranged on the substrate, and the pressing roller and the cutting knife are arranged above the belt receiving platform and can independently move up and down relative to the belt receiving platform.
8. The pole piece forming device according to claim 1 or 7, further comprising a tape cutting module provided between the tape receiving module and the laser cutting module, wherein the tape cutting module comprises a connecting arm, a connecting arm driving device and a plurality of blades, the blades are mounted on the connecting arm in parallel along the width direction of the raw material tape, and the connecting arm can drive the blades thereon to perform cutting action and resetting action after cutting under the driving of the connecting arm driving device.
9. The pole piece forming device according to claim 1, wherein the belt pressing module comprises a base plate, a first power source, a driving plate and a second power source, the first power source is fixed on the base plate, the second power source is fixed on the driving plate, the press roller is driven by the second power source to move relative to the driving plate, the press roller, the driving plate and the second power source can be integrally driven by the first power source to move relative to the base plate, and force application points of the first power source and the second power source are staggered with each other along the length direction of the press roller.
10. The pole piece forming device of claim 1, further comprising a dust removal module arranged between the laser cutting module and the material receiving module, wherein the dust removal module comprises a rotating shaft arranged in parallel, and a plurality of brushes are axially connected to the rotating shaft and can rotate along with the rotating shaft.
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CN108274130A (en) * 2017-12-03 2018-07-13 广州市易鸿智能装备有限公司 A kind of fully-automatic laser die-cutting machine
CN108044233A (en) * 2017-12-29 2018-05-18 深圳吉阳智能科技有限公司 A kind of laser cutting separated device and method of pole piece leftover pieces
CN108237334B (en) * 2018-01-25 2024-03-29 广东新宇智能装备有限公司 Dust and slag preventing device for laser cutting pole piece and application method thereof
CN108296648A (en) * 2018-02-08 2018-07-20 深圳吉阳智能科技有限公司 A kind of laser cuts electrode lug device and its cutting block assembly
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