CN113555610B - Material belt uniform speed winding machine - Google Patents
Material belt uniform speed winding machine Download PDFInfo
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- CN113555610B CN113555610B CN202110823108.0A CN202110823108A CN113555610B CN 113555610 B CN113555610 B CN 113555610B CN 202110823108 A CN202110823108 A CN 202110823108A CN 113555610 B CN113555610 B CN 113555610B
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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 embodiment of the invention provides a material belt uniform-speed winding machine, which relates to the technical field of lithium battery manufacturing and comprises a mounting frame, a feeding mechanism, a cutting mechanism and a material winding mechanism, wherein a rubberizing composite component is arranged between the feeding mechanism and the material winding mechanism and is used for bonding a pole piece and a diaphragm together, and the diaphragm are bonded together after the pole piece is cut off to form a material belt; the coiling mechanism comprises a coiling disc and two switching coiling needles. According to the invention, seamless switching of the material belt on the winding needle can be realized, so that uniform feeding of the material belt is realized, winding efficiency is improved, meanwhile, the rubberizing station and the blanking station are integrated together, the structure is simplified, the manufacturing cost is reduced, and in addition, when the winding time is greater than or equal to the rubberizing time and the blanking time, the two switching winding needles can equally divide the time sequence, so that optimal efficiency matching is realized.
Description
Technical Field
The invention relates to the technical field of lithium battery manufacturing, in particular to a material belt uniform speed winding machine.
Background
In the manufacturing process of the lithium battery, the winding of the battery core of the lithium battery is usually completed by a winding machine, and the winding machine can laminate the cathode and anode plates and the diaphragm together in sequence and wind and paste the adhesive to form the battery core.
In the prior art, a winding needle on a winding head is usually required to be fed for winding after a diaphragm and a pole piece are laminated, and a mode that a composite sheet moves away from the center of the winding needle is adopted for feeding, and because the laminated pole piece and the diaphragm are in a dispersed state, the mode requires re-feeding during station conversion, continuous feeding action cannot be achieved, auxiliary time is certainly increased, and winding efficiency is reduced.
In addition, the three-head winding needle structure adopted by the existing winding mechanism is complex in structure and poor in integration level, and the mode that the composite sheet moves away from the winding needle center is adopted for feeding during winding, so that the feeding is required to be stopped during station conversion, and the feeding is required to be stopped for feeding after feeding, so that the auxiliary time is definitely increased, and the winding efficiency is reduced.
Disclosure of Invention
The invention aims to provide a material belt uniform speed winding machine which can realize seamless switching of a pole piece and a diaphragm on a winding needle, improve winding efficiency, integrate rubberizing and blanking stations, simplify the structure and reduce manufacturing cost.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a constant-speed material belt winding machine, which comprises a mounting frame, a feeding mechanism, a cutting mechanism and a material winding mechanism, wherein the feeding mechanism is arranged at the upper part of the mounting frame; a rubberizing composite assembly is further arranged between the feeding mechanism and the winding mechanism and used for bonding the pole piece and the diaphragm together, and the diaphragm are bonded together after the pole piece is cut off so as to form the material belt;
the winding mechanism comprises a winding disc and two switching winding needles, the winding disc is rotatably arranged on the mounting frame, the two switching winding needles are oppositely arranged on the winding disc, the winding disc is provided with a winding station and a rubberizing blanking station, the rubberizing blanking station is positioned at the lower side of the winding station, the winding disc is used for driving the two switching winding needles to switch between the winding station and the rubberizing blanking station, the two switching winding needles are independently and rotatably arranged on the winding disc, the cutting mechanism is arranged on the mounting frame and is close to the winding disc and used for cutting off a material belt, the switching winding needles are positioned at the winding stations and used for adsorbing cut material belt heads and winding the material belt heads on the outer peripheral surfaces of the corresponding switching winding needles so that the material belt is coiled into a battery core, and the switching winding needles positioned at the rubberizing blanking station are used for rubberizing the cut material belt tails and blanking the cut material belt cores.
In an alternative embodiment, the winding mechanism further comprises a rubberizing component and a blanking component, wherein the rubberizing component is arranged on the mounting frame and is close to the rubberizing blanking station and used for rubberizing the battery cell on the lower side of the switching winding needle, and the blanking component is arranged on the mounting frame and is close to the rubberizing blanking station and used for taking off the rubberized battery cell from the winding needle.
In an alternative embodiment, the rubberizing subassembly includes drive pivot, rubberizing actuating lever and viscose roller, drive pivot rotationally sets up on the mounting bracket, the one end of rubberizing actuating lever with drive pivot is connected for under the drive of drive pivot relative the mounting bracket rotates, the viscose roller rotationally sets up the other end of rubberizing actuating lever is used for being close to or keeping away from under the drive of rubberizing actuating lever rubberizing unloading station, and right the electric core rubberizes.
In an alternative embodiment, the winding disc is further provided with a pressing station, the pressing station is arranged between the winding station and the rubberizing blanking station, the pressing station is further provided with a clamping pressing roller, the winding mechanism further comprises a pressing driving piece, the pressing driving piece is arranged on the mounting frame and is provided with a pressing driving rod which can approach or separate from the clamping pressing roller, the end part of the pressing driving rod is provided with a pressing auxiliary roller, and the pressing auxiliary roller and the clamping pressing roller are used for clamping the material belt.
In an alternative embodiment, the winding mechanism further comprises a final drive member, the final drive member is arranged on the mounting frame and is provided with a final drive rod which can be close to or far away from the rubberizing blanking station, the end part of the final drive rod is provided with a final pinch roller, and the final pinch roller is used for pressing the surface of the battery cell on the winding needle positioned at the lower side.
In an alternative embodiment, the feeding mechanism comprises a pole piece feeding component and a diaphragm feeding component, the diaphragm feeding component is arranged on the mounting frame and used for conveying the diaphragm to the winding mechanism, the pole piece feeding component is arranged on the mounting frame and used for conveying the pole piece to the winding mechanism, a rubberizing composite component is further arranged between the feeding mechanism and the winding mechanism and used for laminating the pole piece and the diaphragm and compositing the diaphragm to form the material belt.
In an alternative embodiment, the feeding mechanism further comprises a clamping plate feeding assembly and a pole piece cutting assembly, the clamping plate feeding assembly is movably arranged on the mounting frame and can move along the conveying direction of the pole piece and is used for clamping the pole piece under the condition that the conveying speed of the pole piece is consistent, and the pole piece cutting assembly is movably arranged on the mounting frame and can move along the conveying direction of the pole piece and is used for cutting off the pole piece under the condition that the conveying speed of the pole piece is consistent.
In an alternative embodiment, the rubberizing composite assembly includes rubberizing subassembly, first compound roller and second compound roller, the rubberizing subassembly sets up on the mounting bracket to the embedment has the glue spraying valve, is used for to the surface rubberizing of diaphragm, first compound roller with the second compound roller rotationally sets up on the mounting bracket, and is located the low reaches of rubberizing subassembly is used for compressing tightly the diaphragm, and will diaphragm and pole piece bond together.
In an alternative embodiment, the mounting frame is further provided with a composite driving member, and the composite driving member is in transmission connection with the first composite roller or the second composite roller, and is used for driving the first composite roller or the second composite roller to be pressed on the diaphragm.
In an alternative embodiment, the cutting mechanism comprises a cutting driving assembly and a cutting wheel roller, the cutting driving assembly is arranged on the mounting frame, the cutting wheel roller is in transmission connection with the cutting driving assembly and is used for being driven by the cutting driving assembly to approach or depart from the coiling station, and the cutting wheel roller is provided with a material belt cutter which is used for cutting off the material belt under the condition that the rotation linear speed of the cutting wheel roller is consistent with the conveying speed of the material belt.
The beneficial effects of the embodiment of the invention include, for example:
according to the material belt constant-speed winding machine provided by the invention, the two opposite switching winding needles are arranged on the winding disc, the two switching winding needles are switched between the winding station and the rubberizing blanking station by utilizing the rotation of the winding disc, the two switching winding needles can rotate independently, the cutting mechanism is used for cutting the material belt, so that the diaphragm can be uniformly wound to the upper switching winding needle, the switching winding needles positioned at the winding station can absorb the cut material belt head, the material belt head is wound on the outer peripheral surface of the switching winding needle, and further, the seamless switching of winding by the switching winding needle is realized, so that the diaphragm does not need to walk the winding needle center, the diaphragm is cut off on the peripheral surface of the material belt re-winding needle, and the diaphragm can be kept uniform after the winding is completed. Meanwhile, the rubberizing composite assembly is arranged between the feeding mechanism and the coiling mechanism, the pole piece and the diaphragm are adhered together to form an integrated material belt, so that the switching action is realized, and the feeding is not required. Compared with the prior art, the invention can realize seamless switching of the material belt on the winding needle, so that the material belt can realize uniform feeding, the winding efficiency is improved, and meanwhile, the rubberizing station and the blanking station are integrated together, thereby simplifying the structure and reducing the manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a material belt constant-speed winding machine in a first state according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a material belt constant-speed winding machine in a second state according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the winding mechanism in FIG. 1;
FIG. 4 is a schematic diagram of the feeding mechanism in FIG. 1;
FIG. 5 is a schematic diagram of a driving structure of the compound assembly of FIG. 1;
fig. 6 is a schematic view of the cutting mechanism of fig. 1.
Icon: 100-a material belt uniform speed winding machine; 110-mounting rack; 130-rubberizing composite components; 131-gluing components; 133-a first composite roll; 135-a second composite roll; 137-compound drive; 150-a material feeding mechanism; 151-a cleat feeding assembly; 1511-auxiliary splint; 1513-driving a splint; 153-pole piece cutting assembly; 1531-auxiliary cutters; 1533-driving the cutter; 170-a cutting mechanism; 171-a cutting drive assembly; 1711-linear drive; 1713-cutting mounting arm; 1715-a rotary drive; 173-cutting wheel roller; 190-a coil stock mechanism; 191-winding disc; 192-switching winding needles; 193-coil station; 194-rubberizing and blanking stations; 195-a rubberizing assembly; 1951-driving shaft; 1953-rubberizing drive bar; 1955-adhesive roll; 196-grip pinch rollers; 197-hold-down drive; 1971-pressing the driving rod; 1973-pressing auxiliary rollers; 198-ending the drive; 1981-ending the drive rod; 1983-ending the pinch roller.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
As disclosed in the background art, the existing winding mechanism generally adopts a three-head structure to respectively realize the winding, rubberizing and blanking procedures, and the structure makes the structure of the winding head complicated, which is not beneficial to the high integration of equipment. In addition, the existing winding mode is usually that the center of a winding needle is moved by a cut diaphragm, the winding needle is pressed and then the winding action is carried out, and because the cut pole piece and the cut diaphragm are in a dispersed state in the prior art and the pole piece and the cut diaphragm are required to be sent to the center of the winding needle, the diaphragm cannot be uniform in the process, a feeding mechanism is required to be stopped, the feeding mechanism is restarted after feeding is completed, and the winding is realized to form a battery cell.
In order to solve the problems, the invention provides the material belt uniform speed winding machine which can realize seamless switching of the diaphragm on the winding needle, improve the winding efficiency, integrate the rubberizing station and the blanking station together, simplify the structure and reduce the manufacturing cost. It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Referring to fig. 1 and 2, the present embodiment provides a constant-speed winding machine 100 for a material tape, which can realize seamless switching of the material tape on a winding needle, improve winding efficiency, and integrate a rubberizing station and a blanking station together, thereby simplifying the structure and reducing manufacturing cost.
The embodiment provides a material tape uniform velocity winding machine 100, which comprises a mounting frame 110, a material feeding mechanism 150, a cutting mechanism 170 and a material winding mechanism 190, wherein the material feeding mechanism 150 is arranged on the upper portion of the mounting frame 110, the material winding mechanism 190 is arranged on the lower portion of the mounting frame 110, the material feeding mechanism 150 is used for conveying a material tape to the material winding mechanism 190, wherein the material tape is a composite body of a pole piece and a diaphragm, for example, the material tape can comprise a laminated composite sheet of a positive pole piece, a first layer of diaphragm, a negative pole piece and a second layer of diaphragm, and of course, the material tape can also be in other composition modes, but can be wound to form a laminated structure of an electric core, and the material tape mentioned in the embodiment can be formed. Specifically, it is referred to herein that the separator is compounded, only the separator is compounded, and at the same time, the compounding period can be freely selected.
The winding mechanism 190 comprises a winding disc 191 and two switching winding needles 192, the winding disc 191 is rotatably arranged on the mounting frame 110, the two switching winding needles 192 are oppositely arranged on the winding disc 191, a winding station 193 and a rubberizing blanking station 194 are arranged on the winding disc 191, the rubberizing blanking station 194 is arranged on the lower side of the winding station 193, the winding disc 191 is used for driving the two switching winding needles 192 to switch between the winding station 193 and the rubberizing blanking station 194, the two switching winding needles 192 are independently arranged on the winding disc 191 in a rotating mode, the cutting mechanism 170 is arranged on the mounting frame 110 and is close to the winding disc 191 and used for cutting a material tape, the switching winding needles 192 arranged on the winding station 193 are used for adsorbing the cut material tape head, winding the material tape head on the outer circumferential surface of the corresponding switching winding needles 192, so that the material tape is coiled into a battery core, and the switching winding needles 192 arranged on the rubberizing blanking station 194 are used for rubberizing the cut material tape tail and discharging the rubberized battery core.
In this embodiment, the feeding mechanism 150 is used for conveying the pole piece and the diaphragm to the winding mechanism 190, where the pole piece includes a positive pole piece and a negative pole piece, and the diaphragm is also two layers, and the positive pole piece, the negative pole piece and the two layers of diaphragms are sequentially stacked for feeding, which can refer to a feeding mechanism of an existing winding machine specifically.
In this embodiment, a rubberized composite component 130 is further disposed between the feeding mechanism 150 and the winding mechanism 190, and the rubberized composite component 130 is used for adhering the pole piece and the diaphragm and compositing the diaphragm. Specifically, the winding disc 191 is provided with a winding station 193 and a rubberizing blanking station 194 which are distributed up and down, by rotating the winding disc 191, seamless switching of the two switching winding needles 192 between the two stations can be achieved, in addition, by arranging the rubberizing composite component 130 between the feeding mechanism 150 and the winding mechanism 190, the composite of the diaphragms is achieved, so that the two layers of diaphragms are combined into a whole and are formed into a whole with the pole piece, and diaphragm cutting is achieved through the cutting mechanism 170. Simultaneously, the two switching winding needles 192 rotate independently, and when the stations are switched, the switching winding needles 192 can be driven to rotate, so that the rotation linear speed of the switching winding needles 192 switched to the winding station 193 can be consistent with the conveying speed of the diaphragm, and when the diaphragm is cut off, the new switching winding needles 192 (switched to the winding station 193) can directly absorb the winding material tape head, and the material tape tail is continuously wound by the switching winding needles 192 switched to the rubberizing blanking station 194. The diaphragm is combined into a whole, so that the switching winding needle 192 can realize one-time adsorption winding, and further the constant-speed feeding of the material belt is ensured, and the winding action is continuously performed under the condition that the feeding mechanism 150 is not stopped.
Note that, the first material tape mentioned in this embodiment refers to the end of the material tape near the feeding mechanism 150 after being cut by the cutting mechanism 170, which can be directly adsorbed on the outer circumferential surface of the switching winding needle 192, and the winding is continuously performed by the switching winding needle 192, and the tail material tape mentioned in this embodiment refers to the end of the material tape near the bottom of the winding mechanism 190 after being cut by the cutting mechanism 170, which can be continuously wound by the switching winding needle 192 switched to the rubberizing blanking station 194 after being cut, and the subsequent rubberizing and blanking actions are performed after the winding to form the battery core. In this embodiment, the switching time of the winding disc 191 is when the switching winding needle 192 on the winding station 193 winds to a certain extent, at this time, the winding disc 191 rotates, and at the same time, the switching winding needle 192 on the winding station 193 keeps rotating and moves towards the rubberizing blanking station 194, and the switching winding needle 192 on the rubberizing blanking station 194 continuously accelerates rotating. When the switching station operation is completed, the rotational linear speed of the new switching winding needle 192 located on the winding station 193 reaches the conveying speed of the material tape and rotates at a subsequent constant speed, while the old switching winding needle 192 located on the rubberizing blanking station 194 continuously keeps rotating at a constant speed, at this time, the cutting mechanism 170 cuts off the diaphragm between the pole pieces to form a material tape head and a material tape tail, the material tape head is adsorbed and wound on the switching winding needle 192 on the upper side, and the material tape tail is continuously wound by the switching winding needle 192 on the lower side, so that one winding period is completed.
In this embodiment, the material tape is wound after being directly absorbed by the switching winding needle 192 switched to the winding station 193, and the material tape is not required to pass through the center of the switching winding needle 192, i.e. the material takes away the outer peripheral surface of the switching winding needle 192 to achieve winding, and is fixedly attached to the outer peripheral surface of the switching winding needle 192. Specifically, in this embodiment, the switching winding needle 192 adopts an adsorption winding process, unlike the conventional layout of winding through the center of the winding needle, the present invention directly adsorbs the material tape head by arranging an adsorption structure, such as a vacuum adsorption structure or an adhesive structure, on the outer peripheral surface of the switching winding needle 192, so that the material tape head can be stuck on the outer peripheral surface of the switching winding needle 192, thereby realizing uniform feeding of the material tape, and the winding of the switching winding needle 192 is performed uninterruptedly.
In the embodiment, a double-head winding needle structure is adopted, and compared with a conventional triple-head structure, the mechanism rubberizing and blanking of the embodiment are integrated on one station, so that the structure is simplified, and the manufacturing cost is reduced.
Referring to fig. 3 in combination, further, the winding mechanism 190 further includes a rubberizing component 195 and a blanking component (not shown), wherein the rubberizing component 195 is disposed on the mounting frame 110 and is disposed near the rubberizing blanking station 194 for rubberizing the battery cells on the lower switching winding needle 192, and the blanking component is disposed on the mounting frame 110 and is disposed near the rubberizing blanking station 194 for removing the rubberized battery cells from the winding needle. Specifically, the specific structure and the blanking principle of the blanking assembly can refer to the existing blanking structure, and the offset arrangement between the rubberizing assembly 195 and the blanking assembly avoids mutual interference.
The rubberizing subassembly 195 includes a driving shaft 1951, a rubberizing driving rod 1953 and a rubberizing roller 1955, wherein the driving shaft 1951 is rotatably disposed on the mounting frame 110, one end of the rubberizing driving rod 1953 is connected with the driving shaft 1951 for rotating relative to the mounting frame 110 under the driving of the driving shaft 1951, and the rubberizing roller 1955 is rotatably disposed at the other end of the rubberizing driving rod 1953 for approaching or separating from the rubberizing blanking station 194 under the driving of the rubberizing driving rod 1953 and rubberizing the battery cells. Specifically, the driving shaft 1951 is driven by a stepping motor and drives the adhesive driving rod 1953 to rotate, so as to drive the adhesive roller 1955 to approach or separate from the battery cell on the switching winding needle 192, and the adhesive roller 1955 can adopt an active rotation mode, and through motion control, when the adhesive roller 1955 approaches the battery cell, the surface linear speed of the adhesive roller 1955 is consistent with the rotational linear speed of the battery cell on the winding needle at the lower side, and the adhesive bonding is completed when the surface linear speed and the rotational linear speed are kept relatively static, so that the adhesive bonding effect is ensured.
In this embodiment, the winding disc 191 further has a pressing station, the pressing station is disposed between the winding station 193 and the rubberizing blanking station 194, and the pressing station is further provided with a clamping pressing roller 196, the winding mechanism 190 further includes a pressing driving member 197, the pressing driving member 197 is disposed on the mounting frame 110 and has a pressing driving rod 1971 capable of approaching or separating from the clamping pressing roller 196, the end of the pressing driving rod 1971 is provided with a pressing auxiliary roller 1973, and the pressing auxiliary roller 1973 and the clamping pressing roller 196 are used for clamping the diaphragm. Specifically, the pressing action on the diaphragm is realized at the pressing station, after the diaphragm is cut off, the material tape tail can continue to be wound and ended by the lower side switching winding needle 192, and the pressing driving piece 197 drives the pressing driving rod 1971 to drive the pressing auxiliary roller 1973 to be close to the clamping pressing roller 196 and clamp the material tape tail, so that the material tape tail is prevented from freely falling under the action of gravity and tension to influence the subsequent winding.
In this embodiment, the winding mechanism 190 further includes a finishing drive 198, where the finishing drive 198 is disposed on the mounting frame 110 and has a finishing drive rod 1981 capable of approaching or separating from the rubberizing and blanking station 194, and the end of the finishing drive rod 1981 is provided with a finishing pinch roller 1983, where the finishing pinch roller 1983 is used to press the surface of the battery cell on the winding pin on the lower side. Specifically, the ending driving member 198 is used for keeping the material belt tail from loosening, and meanwhile, the ending driving rod 1981 on the ending driving member 198 can drive the ending pressing roller 1983 to press the surface of the battery cell on the lower winding needle, so that the battery cell is prevented from loosening.
It should be noted that, in this embodiment, the adhesive bonding and compounding assembly 130 bonds and compounds the material belt, which merely refers to bonding and compounding the overlapped portions of the diaphragms in the material belt, the pole piece is cut off in the material feeding process, at this time, the whole material belt is supported by the diaphragms in tension and is conveyed, and the diaphragm conveying substitute material belt can be used for conveying, and the pole piece is wrapped or attached on the diaphragms.
Referring to fig. 4 in combination, the feeding mechanism 150 includes a pole piece feeding assembly (not identified in the drawing) and a diaphragm feeding assembly (not identified in the drawing), the diaphragm feeding assembly is disposed on the mounting frame 110 and is used for conveying the diaphragm to the winding mechanism 190, and the pole piece feeding assembly is disposed on the mounting frame 110 and is used for conveying the pole piece to the winding mechanism 190. Specifically, pole piece incoming material subassembly and diaphragm incoming material subassembly are two, and two pole piece incoming material subassemblies and two diaphragm incoming material subassemblies are crisscross to be set up, and wherein, diaphragm incoming material subassembly includes modules such as diaphragm unreeling, tension adjustment, automatic correction, and specific structure can refer to current diaphragm pay-off structure.
In this embodiment, the feeding mechanism 150 further includes a clamping plate feeding assembly 151 and a pole piece cutting assembly 153, where the clamping plate feeding assembly 151 is movably disposed on the mounting frame 110 and can move along the conveying direction of the pole piece, so as to clamp the pole piece under the condition of consistent conveying speed of the pole piece, and the pole piece cutting assembly 153 is movably disposed on the mounting frame 110 and can move along the conveying direction of the pole piece, so as to cut off the pole piece under the condition of consistent conveying speed of the pole piece. Specifically, the pole piece cutting assembly 153 can realize the function of cutting the pole piece, namely, the pole piece cutting assembly 153 cuts off the pole piece when moving to be consistent with the conveying speed of the pole piece, so that the cutting effect is ensured, meanwhile, the interruption of pole piece conveying is avoided, and the pole piece is cut without stopping.
In this embodiment, the clamping plate feeding assembly 151 includes an auxiliary clamping plate 1511 and a driving clamping plate 1513, where the auxiliary clamping plate 1511 and the driving clamping plate 1513 are disposed on a clamping plate mounting seat, and are driven by a linear driving device, such as an air cylinder or a linear motor, to drive the clamping plate mounting seat to move along the conveying direction of the pole piece. Wherein auxiliary splint 1511 and driving splint 1513 move synchronously in the direction of transportation of the pole piece, and driving splint 1513 is driven by a cylinder, so that driving splint 1513 can be close to or far away from auxiliary splint 1511, when the speed of splint mount pad reaches to be consistent with the speed of transportation of the pole piece, driving splint 1513 is close to auxiliary splint 1511, and clamps the pole piece between auxiliary splint 1511 and driving splint 1513, thereby avoid losing tension support after the pole piece is cut off.
In this embodiment, the pole piece cutting assembly 153 includes an auxiliary cutter 1531 and a driving cutter 1533, wherein the auxiliary cutter 1531 and the driving cutter 1533 are disposed on a cutter mounting base, and are driven by a linear driving device, such as a cylinder or a linear motor, to drive the cutter mounting base to move along the conveying direction of the pole piece. The auxiliary cutter 1531 and the driving cutter 1533 move synchronously in the conveying direction of the pole piece, and the driving cutter 1533 is driven by a cylinder, so that the driving cutter 1533 can approach or depart from the auxiliary cutter 1531, when the speed of the cutter mounting seat is consistent with the conveying speed of the pole piece, the driving cutter 1533 approaches the auxiliary cutter 1531, and the two cutters act on two sides of the pole piece to cut off the pole piece.
It should be noted that, in this embodiment, the clamping plate mounting seat and the cutter mounting seat may be integrated into one body and driven by the same linear driving device, so as to realize the actions of linear tracking and clamping.
Referring to fig. 4 and 5 in combination, the rubberizing compound assembly 130 includes a rubberizing assembly 131, a first compound roller 133 and a second compound roller 135, the rubberizing assembly 131 being disposed on the mounting frame 110 and having a glue spraying valve built therein for rubberizing the surface of the diaphragm, the first compound roller 133 and the second compound roller 135 being rotatably disposed on the mounting frame 110 and downstream of the rubberizing assembly 131 for compressing the diaphragm and bonding the diaphragm and the pole piece together.
In other preferred embodiments of the present invention, the adhesive bonding assembly 130 may also be used to bond the diaphragm together in other bonding manners, such as adhesive bonding or ultrasonic bonding, for example, and the bonding manner of the diaphragm is not specifically limited herein. In addition, in this embodiment, the rubberizing composite component 130 only bonds and composites the overlapped portions of the diaphragms between the pole plates, so as to ensure that the diaphragms can be composited into a whole after the diaphragms are cut, and then an integrated material belt is formed.
In this embodiment, the mounting frame 110 is further provided with a composite driving member 137, and the composite driving member 137 is in transmission connection with the first composite roller 133 or the second composite roller 135, so as to drive the first composite roller 133 or the second composite roller 135 to press on the diaphragm. Specifically, there may be two compound driving members 137, and the two compound driving members 137 are respectively in transmission connection with the first compound roller 133 and the second compound roller 135, so as to drive the first compound roller 133 and the second compound roller 135 to be close to each other or to be far away from each other. Of course, the compound drive 137 may be a single compound roller, and simply connected to the first compound roller 133 or the second compound roller 135 in a driving manner, and the first compound roller 133 and the second compound roller 135 can be moved toward or away from each other. Preferably, the compound driving member 137 in this embodiment is an air cylinder, and the air cylinder is in transmission connection with the second compound roller 135, so as to drive the second compound roller 135 to approach or separate from the first compound roller.
It should be noted that, in this embodiment, the glue coating assembly 131 is fixed directly above the diaphragm, the first composite roller 133 is rotatably disposed on the mounting frame and located at the downstream of the glue coating assembly 131, the glue coating assembly 131 coats the surface of the diaphragm with glue, and bonding is achieved after the first composite roller 133 and the second composite roller 135 are pressed together.
Referring to fig. 6 in combination, in this embodiment, the cutting mechanism 170 includes a cutting driving assembly 171 and a cutting wheel roller 173, the cutting driving assembly 171 is disposed on the mounting frame 110, the cutting wheel roller 173 is in transmission connection with the cutting driving assembly 171, and is used for being close to or far from the coiling station 193 under the driving of the cutting driving assembly 171, and the cutting wheel roller 173 is provided with a material belt cutter for cutting the diaphragm under the condition that the rotation linear speed of the cutting wheel roller 173 is consistent with the conveying speed of the diaphragm. Specifically, the cutting driving assembly 171 includes a linear driving member 1711, a cutting mounting arm 1713, and a rotary driving member 1715, the linear driving member 1711 is disposed on the mounting frame 110, one end of the cutting mounting arm 1713 is in transmission connection with the linear driving member 1711, the rotary driving member 1715 is disposed at the other end of the cutting mounting arm 1713, the cutting wheel roller 173 is in transmission connection with the rotary driving member 1715, wherein the linear driving member 1711 is used for driving the cutting mounting arm 1713 to approach or separate from the coil stock station 193, and the rotary driving member 1715 is used for driving the cutting wheel roller 173 to rotate. When the diaphragm is actually cut off, the linear driving piece 1711 drives the cutting and mounting arm 1713 to be close to the coiling station 193, the rotary driving piece 1715 is driven by the cutting and mounting arm 1713 to be close to the coiling station 193, and drives the cutting wheel roller 173 to rotate in an accelerating way, so that the cutting wheel roller 173 is tightly attached to the diaphragm, and when the rotation linear speed of the cutting wheel roller 173 is consistent with the conveying speed of the diaphragm, the diaphragm is cut off by the belt cutter on the cutting wheel roller 173, so that the head and the tail of the belt are formed.
It should be noted that the driving member mentioned in this embodiment includes, but is not limited to, a cylinder, an oil cylinder, a stepper motor, and the like.
The working principle of the web constant speed winding machine 100 according to the present embodiment will be described in detail.
When the winding of the battery core starts, the pole piece feeding speed starts to accelerate from zero until the constant speed stage, after a period of time, the clamping plate feeding assembly 151 and the pole piece cutting assembly 153 also start to perform feeding motion, at this time, the driving clamping plate 1513 of the clamping plate feeding assembly 151 is in an open state, after a short period of acceleration, the motion speed of the clamping plate feeding assembly 151 and the pole piece cutting assembly 153 is consistent with the feeding speed of the pole piece, and the pole piece feeding assembly and the pole piece cutting assembly are in a relatively static state in space, and cut off after reaching a preset length.
Simultaneously, the coil stock station 193 starts to switch the station to the rubberizing blanking station 194, in the process of switching the station, the rotation winding action of the switch coil needle 192 moving from the coil stock station 193 to the rubberizing blanking station 194 continues, after the coil is wound to the preset length of the battery core, the cutting action is completed by the cutting mechanism 170, when the cutting action is completed, the clamping plate feeding assembly 151 and the pole piece cutting assembly 153 enter a deceleration stage, winding of the residual pole pieces is completed, and meanwhile, after the pole pieces are cut off, the two layers of diaphragms are combined into a whole by the rubberizing composite assembly 130. When the winding reel 191 starts to switch the stations, the switching winding needle 192, which moves from the rubberizing and blanking station 194 to the winding station 193, starts to accelerate rotation. When the switching station operation is completed, the rotation linear speed of the new switching winding needle 192 positioned on the winding station 193 is consistent with the conveying speed of the diaphragm, meanwhile, the rotation linear speed of the cutting wheel roller 173 is also consistent with the switching winding needle 192, the cutting wheel roller 173, the switching winding needle 192 and the diaphragm are kept relatively static, the diaphragm is cut off by the material tape cutter, and a material tape head and a material tape tail are formed, wherein the material tape head is adsorbed on the outer peripheral surface of the switching winding needle 192, the pre-winding diaphragm and pole piece feeding operation of the next battery core is directly realized, and the material tape tail enters the switching winding needle 192 on the lower side to continuously complete the ending operation.
Meanwhile, the material tape tail is pressed by the pressing driving piece 197 at the pressing station, the material tape tail after the diaphragm is cut is continuously self-rolled by the switching rolling needle 192 positioned at the rubberizing blanking station 194, the rubberizing component 195 is tightly attached to the switching rolling needle 192 at the lower side when the material tape tail enters the rolling needle, the adhesive roller 1955 on the rubberizing component 195 can automatically rotate, and the adhesive tape prepared in advance on the adhesive roller 1955 is attached to the electric core when the electric core on the switching rolling needle 192 on the rubberizing blanking station 194 is relatively static through motion control, so that the rubberizing process is completed, and the final rubberizing is realized. After the diaphragm is cut off, the pressing driving member 197 on the pressing station can ensure that the material belt tail is not loose, and meanwhile, the ending pressing roller 1983 on the ending driving member 198 is tightly attached to the battery cell, so that the battery cell is prevented from being loose. Finally, the battery cell after the rubberizing is removed from the switching winding needle 192 by utilizing the blanking assembly, and winding and forming of the battery cell are completed.
In summary, this embodiment provides a material tape uniform velocity winder 100, the action setting of the film feeding process is changed, the synchronous follow-up cutting function is realized, the dead time of a mechanism in the winding and cutting process is cancelled through the mode of the follow-up cutting of the pole piece, the production efficiency of equipment is improved, then the adsorption winding of the material tape head is realized through changing the action setting when the station is switched in the winding process, the feeding of the material tape head in the mode of adopting the winding needle center is avoided, the non-stop feeding of the diaphragm is realized, the diaphragm is compounded into one layer of feeding through bonding the composite diaphragm, and the production efficiency in the winding process is increased. Meanwhile, the diaphragm is not stopped, and product abnormality caused by unstable tension of the diaphragm is avoided. According to the invention, seamless switching of the diaphragm on the winding needle can be realized, so that uniform feeding of the diaphragm is realized, winding efficiency is improved, and meanwhile, the rubberizing station and the blanking station are integrated together, so that the structure is simplified, and the manufacturing cost is reduced.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The feeding mechanism is arranged at the upper part of the mounting frame, the winding mechanism is arranged at the lower part of the mounting frame, and the feeding mechanism is used for conveying a feeding belt to the winding mechanism; a rubberizing composite component is further arranged between the feeding mechanism and the winding mechanism and used for bonding the pole piece and the diaphragm into a whole and compositing the diaphragm;
the winding mechanism comprises a winding disc and two switching winding needles, the winding disc is rotatably arranged on the mounting frame, the two switching winding needles are oppositely arranged on the winding disc, the winding disc is provided with a winding station and a rubberizing and blanking station, the rubberizing and blanking station is positioned at the lower side of the winding station, the winding disc is used for driving the two switching winding needles to switch between the winding station and the rubberizing and blanking station, the two switching winding needles are independently and rotatably arranged on the winding disc, the cutting mechanism is arranged on the mounting frame and is close to the winding disc and is used for cutting off a material belt, the switching winding needle positioned at the winding station is used for adsorbing the cut material belt head and winding the material belt head on the outer peripheral surface of the corresponding switching winding needle so that the material belt is coiled into a battery core, and the switching winding needle positioned at the rubberizing and blanking station is used for rubberizing the cut material belt tail and blanking the cut material belt tail;
the cutting mechanism comprises a cutting driving assembly and a cutting wheel roller, wherein the cutting driving assembly is arranged on the mounting frame, the cutting wheel roller is in transmission connection with the cutting driving assembly, and is used for being driven by the cutting driving assembly to be close to or far away from the coiling station, the cutting driving assembly is further used for driving the cutting wheel roller to rotate, a material belt cutter is arranged on the cutting wheel roller, and the material belt cutter is used for cutting off the material belt under the condition that the rotation linear speed of the cutting wheel roller is consistent with the conveying speed of the material belt so as to realize uniform conveying of the material belt.
2. The web constant speed winder of claim 1, wherein the winding mechanism further comprises a rubberizing assembly and a blanking assembly, wherein the rubberizing assembly is arranged on the mounting frame and is arranged close to the rubberizing blanking station for rubberizing the battery cells on the lower switching winding needle, and the blanking assembly is arranged on the mounting frame and is arranged close to the rubberizing blanking station for removing the rubberized battery cells from the switching winding needle.
3. The web uniform velocity winder of claim 2, wherein the rubberizing assembly comprises a drive shaft, a rubberizing drive rod and a glue roller, wherein the drive shaft is rotatably arranged on the mounting frame, one end of the rubberizing drive rod is connected with the drive shaft and is used for rotating relative to the mounting frame under the drive of the drive shaft, and the glue roller is rotatably arranged at the other end of the rubberizing drive rod and is used for approaching or separating from the rubberizing blanking station under the drive of the rubberizing drive rod and rubberizing the battery cell.
4. The web constant speed winder of claim 2, wherein the winding disc further has a pressing station, the pressing station is disposed between the winding station and the rubberizing blanking station, and the pressing station further has a clamping pressing roller, the winding mechanism further includes a pressing driving member, the pressing driving member is disposed on the mounting frame and has a pressing driving rod capable of approaching to or separating from the clamping pressing roller, and an end portion of the pressing driving rod is provided with a pressing auxiliary roller, and the pressing auxiliary roller and the clamping pressing roller are used for clamping the web.
5. The web constant speed winder of claim 2, wherein the winding mechanism further comprises a tail-in driving member, the tail-in driving member is arranged on the mounting frame and is provided with a tail-in driving rod which can be close to or far away from the rubberizing blanking station, and the end part of the tail-in driving rod is provided with a tail-in pinch roller which is used for pressing the surface of the battery cell on the switching winding needle positioned at the lower side.
6. The web uniform velocity winder of claim 1, wherein the feed mechanism comprises a pole piece feed assembly and a diaphragm feed assembly, the diaphragm feed assembly is disposed on the mounting frame for delivering a diaphragm to the feed mechanism, and the pole piece feed assembly is disposed on the mounting frame for delivering a pole piece to the feed mechanism.
7. The web uniform velocity winder of claim 6, wherein the feed mechanism further comprises a clamp plate feeding assembly and a pole piece cutting assembly, the clamp plate feeding assembly is movably arranged on the mounting frame and can move along the conveying direction of the pole piece for clamping the pole piece under the condition of consistent conveying speed of the pole piece, and the pole piece cutting assembly is movably arranged on the mounting frame and can move along the conveying direction of the pole piece for cutting the pole piece under the condition of consistent conveying speed of the pole piece.
8. The web uniform velocity winder of claim 6, wherein the rubberizing composite assembly comprises a rubberizing assembly, a first composite roller and a second composite roller, wherein the rubberizing assembly is arranged on the mounting frame and is internally provided with a glue spraying valve for rubberizing the surface of the diaphragm, and the first composite roller and the second composite roller are rotatably arranged on the mounting frame and are positioned at the downstream of the rubberizing assembly and are used for compressing the diaphragm and bonding the diaphragm and the pole piece together.
9. The web constant speed winder of claim 8, wherein the mounting frame is further provided with a composite driving member, and the composite driving member is in transmission connection with the first composite roller or the second composite roller, and is used for driving the first composite roller or the second composite roller to be pressed on the diaphragm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216750029U (en) * | 2021-11-12 | 2022-06-14 | 无锡先导智能装备股份有限公司 | Winding equipment |
| CN114497890B (en) * | 2022-01-27 | 2024-08-30 | 深圳吉阳智能科技有限公司 | Battery cell diaphragm fly-cutting mechanism |
| CN116845373A (en) * | 2022-03-25 | 2023-10-03 | 宁德时代新能源科技股份有限公司 | Winding device and method for winding material |
| CN114769716B (en) * | 2022-06-14 | 2024-09-03 | 苏州杰锐思智能科技股份有限公司 | Feeding and cutting mechanism and method |
| CN118414738A (en) * | 2022-07-25 | 2024-07-30 | 宁德时代新能源科技股份有限公司 | Rubberizing mechanism and winding system |
| WO2024088020A1 (en) * | 2022-10-27 | 2024-05-02 | 无锡先导智能装备股份有限公司 | Film combining apparatus and winding device |
| CN115548502B (en) * | 2022-10-27 | 2023-12-29 | 厦门海辰新材料科技有限公司 | Stripping and feeding mechanism and pole piece recycling device |
| CN116565289B (en) * | 2023-07-11 | 2023-11-21 | 宁德时代新能源科技股份有限公司 | Winding system and winding method thereof |
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