CN112247356A - Flow collecting disc welding production line - Google Patents

Flow collecting disc welding production line Download PDF

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Publication number
CN112247356A
CN112247356A CN202011061219.4A CN202011061219A CN112247356A CN 112247356 A CN112247356 A CN 112247356A CN 202011061219 A CN202011061219 A CN 202011061219A CN 112247356 A CN112247356 A CN 112247356A
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CN
China
Prior art keywords
welding
turnover
production line
clamping
negative pressure
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Granted
Application number
CN202011061219.4A
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Chinese (zh)
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CN112247356B (en
Inventor
吴轩
程从贵
冉昌林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Yifei Laser Equipment Co ltd
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Jiangsu Yifei Laser Equipment Co ltd
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Priority to CN202011061219.4A priority Critical patent/CN112247356B/en
Publication of CN112247356A publication Critical patent/CN112247356A/en
Application granted granted Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/22—Spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/005—Devices for making primary cells
    • 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
    • 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

Abstract

The embodiment of the invention provides a collector plate welding production line, which comprises: the current collecting disc feeding device and the battery cell fixing mechanism; the collecting tray feeding device comprises a multi-station distributing mechanism, a temporary storage positioning mechanism and a turnover mechanism which are sequentially arranged; the cell fixing mechanism is used for being connected with the turnover mechanism and comprises a pressing mechanism, the pressing mechanism is used for being arranged on the upper side of the cell conveying line and comprises a first telescopic driving mechanism and a pressing block, the telescopic end of the first telescopic driving mechanism is vertically arranged and elastically connected with the pressing block, and the pressing block is provided with a flexible pressing surface which is used for being attached to the side surface of a cell; the invention greatly improves the feeding efficiency of the current collecting plate, can realize multi-station simultaneous welding of the current collecting plate, effectively fixes the battery cell while ensuring the quality of the battery cell, and meets the requirement of efficient welding of the battery cell.

Description

Flow collecting disc welding production line
Technical Field
The invention relates to the technical field of battery processing, in particular to a collector plate welding production line.
Background
The battery core is the most important component of the battery, and the battery core can be assembled to form the battery after being sequentially processed by the processes of mechanical/ultrasonic rubbing, encapsulation, shell entering, current collecting plate welding, seal welding and the like. Therefore, the performance of the battery core has direct influence on the performance of the battery, and the preparation process of the battery core before the battery is assembled is very important.
Currently, when the current collecting plate is welded on the end of the battery core, the current collecting plate is generally fed manually, and first, the current collecting plate is fed one by one; then, clamping the selected current collecting disc between the end part of the battery cell and the welding pressing plate; finally, the corresponding current collecting plates are spot-welded one by one manually by adopting a laser spot welding machine. The manual feeding mode has low efficiency and high labor cost, seriously influences the welding efficiency of the current collecting disc and is difficult to meet the production requirement.
Meanwhile, when the current collecting disc is welded, the battery cell is fixed through the clamping mechanism and the pressing mechanism, and the clamping ends of the clamping mechanism are arranged on two sides of the battery cell conveying line oppositely, so that the current collecting disc is clamped between a welding surface at the other end of the battery cell and the welding pressing plate when one end of the battery cell is axially positioned; meanwhile, the pressing mechanism is used for pressing the side face of the battery cell to fix the battery cell on the battery cell conveying line, so that the battery cell is reliably fixed, and the current collecting disc is welded on the welding face of the end part of the battery cell through the laser spot welding machine.
However, when the side surface of the battery cell is pressed by the pressing mechanism, the side surface of the battery cell is usually pressed by using the telescopic driving mechanism and the pressing block. Although can to a certain extent cover electric core on electric core conveying line with the firm ground pressure of electric core through the compact heap, because the direct rigid contact in side of compact heap and electric core, not only be difficult to ensure the effective area of contact of compact heap and electric core side, when the drive power that telescopic drive mechanism gave the compact heap is too big in addition, the compact heap led to the fact the damage to the side of electric core easily for electric core takes place to deform, leads to electric core damage, and the quality is not up to standard.
Therefore, when the current collector plate is welded, the feeding efficiency of the current collector plate is low, and when the battery cell is welded and fixed, the battery cell is easily damaged, which not only seriously affects the welding efficiency of the current collector plate, but also is difficult to ensure the quality of the battery cell.
Disclosure of Invention
The embodiment of the invention provides a collector plate welding production line, which is used for solving the problems that when a collector plate is welded, the collector plate feeding efficiency is low, and a battery cell is easily damaged when the battery cell is welded and fixed.
The embodiment of the invention provides a collector plate welding production line, which comprises: the current collecting disc feeding device and the battery cell fixing mechanism; the collecting tray feeding device comprises a multi-station distributing mechanism, a temporary storage positioning mechanism and a turnover mechanism which are sequentially arranged; the multi-station distributing mechanism is used for transferring the collecting tray to different welding stations, and the temporary storage positioning mechanism and the turnover mechanism are arranged on each welding station in a one-to-one correspondence manner; the cell fixing mechanism is used for connecting the turnover mechanism of the welding station, the cell fixing mechanism comprises a pressing mechanism, the pressing mechanism is used for being arranged on the upper side of the cell conveying line, the pressing mechanism comprises a first telescopic driving mechanism and a pressing block, the telescopic end of the first telescopic driving mechanism is vertically arranged and is elastically connected with the pressing block, and the pressing block is provided with a flexible pressing surface used for being attached to the side surface of a cell.
According to the collector plate welding production line disclosed by the embodiment of the invention, the telescopic end of the first telescopic driving mechanism is connected with the linkage frame, the linkage frame is connected with the pressing block through the vertical guide mechanism, and the elastic component is arranged between the linkage frame and the pressing block; the pressing block comprises a connecting block and a flexible pressing block, the vertical guide mechanism is connected with one end of the connecting block, and the other end of the connecting block is connected with one end, far away from the flexible pressing surface, of the flexible pressing block.
According to the collector plate welding production line provided by the embodiment of the invention, the battery cell fixing mechanism further comprises a clamping mechanism, two clamping ends of the clamping mechanism are used for being oppositely arranged on two sides of the battery cell conveying line, one clamping end of the clamping mechanism is used for abutting against one end of the battery cell, and the other clamping end of the clamping mechanism is formed into a welding pressing plate for clamping the collector plate between the other end of the battery cell and the welding pressing plate.
According to the collector tray welding production line provided by the embodiment of the invention, the multi-station distribution mechanism comprises a plurality of transfer units, the plurality of transfer units can be used for moving along a preset walking path so as to transfer the collector trays to the corresponding welding stations, and the transfer units are provided with first negative pressure adsorption components for adsorbing the collector trays.
According to one embodiment of the invention, the collector plate welding production line comprises a transfer unit, a lifting adjusting mechanism and a first negative pressure adsorption assembly, wherein the lifting adjusting mechanism is arranged on a sliding table of a linear module and is connected with the first negative pressure adsorption assembly; the transferring unit comprises a first transferring unit and a second transferring unit, and the second transferring unit is arranged on the sliding table of the corresponding linear module of the first transferring unit.
According to one embodiment of the collecting tray welding production line, the collecting tray feeding device further comprises a feeding positioning mechanism, a plurality of profiling grooves are formed in the feeding positioning mechanism, and the profiling grooves are used for placing the collecting trays.
According to the collector plate welding production line provided by the embodiment of the invention, the feeding positioning mechanism is provided with a feeding robot, the feeding robot comprises a multi-degree-of-freedom mechanical arm and a second negative pressure adsorption assembly, and the second negative pressure adsorption assembly is installed at the execution end of the multi-degree-of-freedom mechanical arm; and/or, last first supplied materials detection sensor and the collector plate positioning mechanism of still having configured of material loading positioning mechanism, the sense terminal of first supplied materials detection sensor with the profile groove is corresponding, collector plate positioning mechanism have with the corresponding location pressure head in profile groove, first supplied materials detection sensor communication connection collector plate positioning mechanism.
According to the collector plate welding production line provided by the embodiment of the invention, the temporary storage material positioning mechanism is provided with the object stage and the positioning clamping jaw, the positioning clamping jaw is horizontally arranged on the upper side of the object stage, the clamping end of the positioning clamping jaw is provided with the profiling clamping groove corresponding to the collector plate, and the clamping end of the positioning clamping jaw corresponds to the object stage.
According to the collector plate welding production line provided by the embodiment of the invention, the objective table is provided with a first through hole and a second through hole; a third negative pressure adsorption component is arranged in the first through hole; and a second incoming material detection sensor corresponding to the second through hole is arranged on the temporary storage material positioning mechanism and is respectively in communication connection with the positioning clamping jaw and the third negative pressure adsorption component.
According to one embodiment of the invention, the collector plate welding production line comprises a turnover driving unit, a turnover table and a fourth negative pressure adsorption assembly, wherein the output end of the turnover driving unit is connected with the turnover table, and the fourth negative pressure adsorption assembly is installed at one end of the turnover table; the turnover table comprises a first turnover state and a second turnover state, when the turnover table is in the first turnover state, the adsorption end of the fourth negative pressure adsorption component faces upwards, and the turnover table is used for placing the table top of the collecting tray on the temporary storage positioning mechanism, and when the turnover table is in the second turnover state, the adsorption end of the fourth negative pressure adsorption component faces to the horizontal direction.
According to an embodiment of the invention, the collector welding production line comprises an electric core anode collector welding production line and an electric core cathode collector welding production line, the electric core anode collector welding production line and the electric core cathode collector welding production line are correspondingly connected in a head-to-tail mode, the electric core anode collector welding production line is used for welding the collector at the anode end of the electric core, and the electric core cathode collector welding production line is used for welding the collector at the cathode end of the electric core.
According to the collector plate welding production line provided by the embodiment of the invention, the collector plate is respectively transferred to different welding stations through the multi-station distribution mechanism by arranging the collector plate feeding device and the electric core fixing mechanism, the collector plate is temporarily stored and positioned by the corresponding temporary storage positioning mechanism at each welding station, the collector plate is overturned by the overturning mechanism, and then the pressing block is elastically pressed on the side surface of the electric core in a self-adaptive manner by the corresponding pressing mechanism of the electric core fixing mechanism, so that the flexible pressing surface on the pressing block is effectively contacted with the side surface of the electric core. Therefore, the invention greatly improves the feeding efficiency of the current collecting plate, can realize multi-station simultaneous welding of the current collecting plate, effectively fixes the battery cell while ensuring the quality of the battery cell, and meets the requirement of efficient welding of the battery cell.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a collecting tray welding line according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the loading robot in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a multi-degree of freedom robotic arm in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of the feeding positioning mechanism shown in FIG. 1 according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the multi-station distributing mechanism in fig. 1 according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a first perspective view of the temporary storage material positioning mechanism shown in FIG. 1 according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a second perspective view of the temporary storage material positioning mechanism shown in FIG. 1 according to an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of the structure shown at K in FIG. 6 according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of the turnover mechanism shown in FIG. 1 according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of the cell fixing mechanism in fig. 1 according to an embodiment of the present invention;
fig. 11 is a schematic structural view of the pressing mechanism in fig. 10 according to the embodiment of the present invention.
In the figure, 1, a collecting tray feeding device; 11. a feeding robot; 110. a fixed base; 111. a multi-degree-of-freedom mechanical arm; 1110. a first joint arm; 1111. a second joint arm; 1112. a first rotary drive mechanism; 1113. a second rotary drive mechanism; 1114. a single-rod cylinder; 112. a second negative pressure adsorption component; 12. a feeding positioning mechanism; 120. a first base; 121. profiling grooves; 122. a first incoming material detection sensor; 123. a current collecting plate positioning mechanism; 1230. a telescopic rotary cylinder; 1231. a swing arm is deflected; 1232. positioning a pressure head; 13. a multi-station material distributing mechanism; 130. a first transfer unit; 1300. a linear module; 1301. a lifting adjusting mechanism; 1302. a first negative pressure adsorption component; 131. a second transfer unit; 14. a temporary storage positioning mechanism; 140. a second base; 141. an object stage; 142. positioning the clamping jaw; 1420. a first clamp body; 1421. a second clip body; 1422. a first driving cylinder; 1423. a second driving cylinder; 143. a third negative pressure adsorption component; 144. a second material detection sensor; 15. a turnover mechanism; 150. a third base; 151. a turnover driving unit; 152. a turning table; 153. a fourth telescopic driving mechanism; 154. a fourth negative pressure adsorption assembly; 2. a current collecting plate; 3. a battery cell fixing mechanism; 311. a fixed base; 312. a hold-down mechanism; 3121. a first telescopic driving mechanism; 3122. a compression block; 3123. a linkage frame; 3124. a vertical guide mechanism; 3125. an elastic member; 313. a clamping mechanism; 3131. a second telescopic driving mechanism; 3132. positioning the head; 3133. a third telescopic driving mechanism; 3134. welding a pressing plate; 4. and (5) battery cores.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic structural diagram of a collecting tray welding production line according to this embodiment.
As shown in fig. 1, the embodiment provides a collector tray welding production line, which includes a collector tray feeding device 1 and a cell fixing mechanism 3, where the collector tray feeding device 1 includes a feeding robot 11, a feeding positioning mechanism 12, a multi-station distributing mechanism 13, a temporary storage positioning mechanism 14, and a turnover mechanism 15, which are sequentially arranged in order, where the feeding robot 11 is configured to take a material from a collector tray feeding cart through a negative pressure adsorption assembly, place a sucked collector tray 2 in a profile groove 121 on the feeding positioning mechanism 12, the multi-station distributing mechanism 13 includes a plurality of transfer units, and the plurality of transfer units can be used to move along a preset walking path to transfer the collector tray to different welding stations; the transfer unit is provided with a negative pressure adsorption component for adsorbing the current collecting disc; the temporary storage positioning mechanism 14 is arranged at the welding station to connect the transfer unit and the turnover mechanism 15 in a one-to-one correspondence manner, and the turnover mechanism 15 is further connected with the cell fixing mechanism 3 arranged at the welding station. Therefore, after the multi-station distributing mechanism 13 shown in this embodiment distributes the current collecting disc 2 to the temporary storage positioning mechanisms 14 arranged at each welding station, the current collecting disc 2 can be turned over by the turning mechanism 15 corresponding to the temporary storage positioning mechanism 14, so that the current collecting disc 2 is converted from a horizontal placement state to a vertical placement state, and the vertically placed current collecting disc 2 is placed between the end to be welded of the electric core 4 and the welding pressing plate at the welding station while the electric core 4 is fixed by the electric core fixing mechanism 3, so that the current collecting disc 2 can be conveniently welded.
It should be noted that, since each welding station is sequentially disposed along the cell feeding line, each transferring unit on the multi-station material distributing mechanism 13 shown in this embodiment is specifically configured to move along the same straight line traveling path, so as to meet the feeding requirement for each welding station. Of course, the traveling paths of the respective transfer units shown in this embodiment include, but are not limited to, the same straight traveling path, and may be specifically arranged according to the positions where the respective welding stations are arranged.
All be provided with the negative pressure adsorption component on the illustrated loading robot 11 of this embodiment, multistation feed mechanism 13, temporary storage material positioning mechanism 14 and tilting mechanism 15, for the convenience of distinguishing, set for: the negative pressure adsorption assembly arranged on the transfer unit of the multi-station material distribution mechanism 13 is the first negative pressure adsorption assembly 1302, the negative pressure adsorption assembly arranged on the feeding robot 11 is the second negative pressure adsorption assembly 112, the negative pressure adsorption assembly arranged on the temporary storage positioning mechanism 14 is the third negative pressure adsorption assembly 143, and the negative pressure adsorption assembly arranged on the turnover mechanism 15 is the fourth negative pressure adsorption assembly 154.
Fig. 2 is a schematic structural diagram of the loading robot 11 shown in fig. 1 in this embodiment.
As shown in fig. 2, the loading robot 11 of the present embodiment includes a multi-degree-of-freedom robot 111 and a second negative pressure adsorption module 112, the head end of the multi-degree-of-freedom robot 111 is mounted on the fixed base 110, and the execution end of the multi-degree-of-freedom robot 111 is mounted with the second negative pressure adsorption module 112.
As shown in fig. 3, the multi-degree-of-freedom mechanical arm 111 shown in this embodiment includes a first joint arm 1110 and a second joint arm 1111, one end of the first joint arm 1110 is mounted on the fixed base 110 through a first rotary driving mechanism 1112, the other end of the first joint arm 1110 is hinged to one end of the second joint arm 1111 through a second rotary driving mechanism 1113, a vertically arranged single-rod cylinder 1114 is mounted at the other end of the second joint arm 1111, a telescopic end of the single-rod cylinder 1114 is arranged downward, and a second negative pressure adsorption assembly 112 is mounted on the second joint arm, where the second negative pressure adsorption assembly 112 shown in this embodiment includes a fixed frame on which a plurality of pneumatic suction nozzles are mounted in an array. Because the collecting discs are arranged in an array on the collecting disc loading vehicle, when the arrangement mode of each pneumatic suction nozzle on the second negative pressure adsorption assembly 112 shown in this embodiment is the same as that of the collecting discs, a plurality of collecting discs can be adsorbed at one time by the second negative pressure adsorption assembly 112, and each collecting disc is placed in the corresponding profiling groove of the loading positioning mechanism by the movement of the multi-degree-of-freedom mechanical arm 111.
Fig. 4 is a schematic structural diagram of the feeding positioning mechanism 12 shown in fig. 1 in this embodiment.
As shown in fig. 4, the feeding positioning mechanism 12 shown in this embodiment includes a first base 120, a plurality of contour grooves 121 are formed on the first base 120, and the notch shape of the contour grooves 121 is adapted to the collecting tray and is used for placing the collecting tray, wherein the contour grooves 121 shown in this embodiment are specifically provided with four contour grooves 121, and the four contour grooves 121 are arranged at equal intervals along a straight line.
When the loading robot 11 loads materials into the contour grooves 121 corresponding to the loading positioning mechanisms 12, in order to ensure the accuracy of the pose of each collector tray placed in the contour grooves 121, the loading positioning mechanism 12 shown in this embodiment is further provided with a first incoming material detection sensor 122 and a collector tray positioning mechanism 123.
As shown in fig. 4, the first incoming material detecting sensors 122 are disposed opposite to the contour grooves 121, and the first incoming material detecting sensors 122 may be proximity switches or photoelectric switches known in the art. In the embodiment, a hollow through hole is formed at the bottom of the profile groove 121, the first incoming material detection sensor 122 is installed at the lower side of the profile groove 121 corresponding to the first incoming material detection sensor, and the detection end of the first incoming material detection sensor 122 corresponds to the profile groove 121.
Meanwhile, the current collecting plate positioning mechanism 123 shown in this embodiment has a positioning pressure head 1232 corresponding to the contour groove 121, specifically, the current collecting plate positioning mechanism 123 includes a telescopic rotating cylinder 1230, a deflecting arm 1231 and a positioning pressure head 1232, an output end of the telescopic rotating cylinder 1230 is connected to one end of the deflecting arm 1231, and the other end of the deflecting arm 1231 is connected to the positioning pressure head 1232. The deflection arm 1231 shown in this embodiment is in a "T" shape, so that two positioning pressing heads 1232 can be simultaneously installed at the other end of the deflection arm 1231, and the distance between the two positioning pressing heads 1232 is equal to the distance between the two profiling grooves 121.
In addition, the first incoming material detecting sensor 122 shown in this embodiment is in communication connection with the collecting tray positioning mechanism 123, when the first incoming material detecting sensor 122 detects that a collecting tray is placed in the profile groove 121, the first incoming material detecting sensor 122 can output a trigger signal, the output end of the telescopic rotating cylinder 1230 immediately performs a deflection action according to the trigger signal to drive the deflection arm 1231 to deflect by 90 degrees, so that the positioning pressure head 1232 installed at the other end of the deflection arm 1231 is just located on the upper side of the profile groove 121, and then the output end of the telescopic rotating cylinder 1230 performs a retraction action to drive the deflection arm 1231 to descend by a preset stroke, so that the positioning pressure head 1232 extends into the profile groove 121, thereby correcting and positioning the placement posture of the collecting tray. After the correction is completed, the output end of the telescopic rotating cylinder 1230 performs stretching and deflecting actions in a manner opposite to the above manner, so that the positioning pressure head 1232 is far away from the contour groove 121, and the first negative pressure adsorption assembly on the multi-station material distribution mechanism can conveniently suck the current collecting disc from the contour groove 121, so as to perform multi-station zone feeding on the current collecting disc.
Fig. 5 is a schematic structural view of the multi-station distributing mechanism 13 shown in fig. 1 according to this embodiment.
As shown in fig. 5, the multi-station material distributing mechanism 13 shown in this embodiment includes two transferring units that can move along the same straight traveling path, the two transferring units are the first transferring unit 130 and the second transferring unit 131, and the first transferring unit 130 and the second transferring unit 131 have the same structure, wherein the first transferring unit 130 includes a straight line module 1300, a lifting adjusting mechanism 1301 and a first negative pressure adsorption assembly 1302, the lifting adjusting mechanism 1301 is installed on a sliding table of the straight line module 1300, and the lifting adjusting mechanism 1301 is connected to the first negative pressure adsorption assembly 1302. Therefore, when the transfer unit sucks the collecting tray from the feeding positioning mechanism 12, the moving position of the transfer unit can be controlled firstly, so that the first negative pressure adsorption assembly 1302 is just located on the upper side of the profile groove 121, then, the lifting adjusting mechanism 1301 controls the first negative pressure adsorption assembly 1302 to descend by a preset height so as to suck the collecting tray from the profile groove 121, and finally, when the collecting tray is sucked, the lifting adjusting mechanism 1301 controls the first negative pressure adsorption assembly 1302 to ascend by the preset height, and the sliding table of the linear module 1300 moves to a pre-material distribution station.
As shown in fig. 5, the lifting adjusting mechanism 1301 shown in this embodiment includes a first vertical sliding table and a second vertical sliding table, the second vertical sliding table includes a plurality of sliding tables and is installed side by side on the first vertical sliding table along the horizontal direction, the first negative pressure adsorption component 1302 corresponds to the second vertical sliding table one to one, the first negative pressure adsorption component 1302 includes a cantilever and a pneumatic suction nozzle, one end of the cantilever is connected to the second vertical sliding table, and the pneumatic suction nozzle is installed at the other end of the cantilever. So, the height unification of each second vertical slip table is adjusted to the first vertical slip table of accessible, and every second vertical slip table can finely tune corresponding first negative pressure adsorption component 1302's height again.
In one embodiment, two second vertical sliding tables are arranged on the first vertical sliding table side by side, each second vertical sliding table is connected with one end of a horizontally arranged cantilever, and two vertically arranged pneumatic suction nozzles are installed at the other end of the cantilever to realize reliable adsorption of the collecting tray.
In a further preferred embodiment, the second transferring unit 131 shown in this embodiment is mounted on the sliding table of the corresponding linear module of the first transferring unit 130. Therefore, when the collecting tray is distributed, the second transferring unit 131 can move along with the sliding table on the first transferring unit 130, and when the first transferring unit 130 moves to the distributing station, the sliding table of the corresponding linear module of the second transferring unit 131 can be started in time until the second transferring unit 131 also moves to the distributing station corresponding to the second transferring unit 131. Therefore, the distribution efficiency is high, and the collecting disc can be distributed to two different distribution stations at the same time.
Fig. 6 is a schematic structural diagram of a first view angle of the temporary storage material positioning mechanism 14 shown in fig. 1 according to the present embodiment; fig. 7 is a structural schematic diagram of a second view angle of the temporary storage material positioning mechanism 14 shown in fig. 1 according to the embodiment; fig. 8 is a schematic diagram of a partial enlarged structure at K in fig. 6 according to the present embodiment.
As shown in fig. 6 and 7, the temporary storage material positioning mechanism 14 of the present embodiment includes a second base 140, an object stage 141 and a positioning clamping jaw 142 are disposed on the second base 140, the positioning clamping jaw 142 is horizontally mounted on the upper side of the object stage 141, a profile clamping groove for corresponding to the collecting tray is formed on a clamping end of the positioning clamping jaw 142, and the clamping end of the positioning clamping jaw 142 corresponds to the object stage 141.
Therefore, when the multi-station material distribution mechanism 13 shown in the above embodiment places the collecting tray on the object stage 141 of the temporary storage positioning mechanism 14 corresponding to the transfer unit, in order to prevent the inaccurate placement posture of the collecting tray from affecting the subsequent material taking operation of the turnover mechanism, the present embodiment corrects the placement posture of the collecting tray on the object stage 141 through the profiling clamping grooves on the positioning clamping jaws 142.
As shown in fig. 6, the positioning clamping jaw 142 of the present embodiment includes a first clamping body 1420 and a second clamping body 1421, a clamping end of the present embodiment is correspondingly formed between a clamping arm on the first clamping body 1420 and a clamping arm on the second clamping body 1421, and a profiling clamping slot is disposed on the clamping arm on the first clamping body 1420, and a notch of the profiling clamping slot faces the clamping arm on the second clamping body 1421. It should be noted here that in order to simultaneously position the collector trays on the two stages 141, the first clamp body 1420 of the present embodiment is shown to have two clamping arms, and correspondingly, the second clamp body 1421 of the present embodiment is also shown to have two clamping arms, so that two clamping ends can be formed on the positioning jaw 142 to simultaneously position the collector trays on the two stages 141.
As shown in fig. 8, the stage 141 of the present embodiment is formed with a first through hole, the first through hole is provided with a third negative pressure adsorption component 143, the third negative pressure adsorption component 143 may be a pneumatic suction nozzle known in the art, the pneumatic suction nozzle extends into the first through hole, and a suction end of the pneumatic suction nozzle faces the table top of the stage 141. In this way, when the collecting tray is dispensed on the stage 141, the collecting tray can be stably fixed on the stage 141 by activating the third vacuum adsorption module 143 based on the vacuum adsorption force provided by the third vacuum adsorption module 143.
Based on the improvement of the above embodiment, the object stage 141 shown in this embodiment is further formed with a second through hole, the temporary storage material positioning mechanism 14 is provided with a second material detection sensor 144 corresponding to the second through hole, the second material detection sensor 144 may be a proximity switch or a photoelectric switch known in the art, and the second material detection sensor 144 is respectively connected to the positioning clamping jaw 142 and the third negative pressure adsorption component 143 in a communication manner. In this way, when the collecting tray is dispensed onto the object stage 141, the second material detection sensor 144 is triggered immediately, and the third negative pressure adsorption assembly 143 is controlled to start the negative pressure adsorption function, and at the same time, the positioning clamping jaw 142 is also controlled to act, so as to correct the pose of the collecting tray on the object stage 141.
As shown in fig. 7, the positioning clamping jaw 142 of the present embodiment is further configured with a first driving cylinder 1422 and a second driving cylinder 1423, the first driving cylinder 1422 and the second driving cylinder 1423 are disposed in a horizontal direction in a back-to-back manner, the telescopic end of the first driving cylinder 1422 is connected to the first clamp 1420, and the telescopic end of the second driving cylinder 1423 is connected to the second clamp 1421, so that the stretching action and the clamping action of the positioning clamping jaw 142 can be controlled by controlling the stretching actions of the first driving cylinder 1422 and the second driving cylinder 1423.
Fig. 9 is a schematic structural diagram of turnover mechanism 15 in fig. 1 according to this embodiment.
As shown in fig. 9, the turnover mechanism 15 shown in this embodiment includes a third base 150, a turnover driving unit 151 is rotatably mounted on the third base 150, the turnover driving unit 151 includes a speed reduction motor and a driving shaft, an output end of the speed reduction motor is connected to one end of the driving shaft through a coupling, a turnover table 152 is mounted on the driving shaft, and a fourth negative pressure adsorption component 154 is mounted at one end of the turnover table 152. The turnover table 152 comprises a first turnover state and a second turnover state, when the turnover table 152 is in the first turnover state, the adsorption end of the fourth negative pressure adsorption component 154 faces upwards, and is flush with the table top used for placing the collecting tray 2 on the temporary storage positioning mechanism 14, and when the turnover table 152 is in the second turnover state, the adsorption end of the fourth negative pressure adsorption component 154 faces to the horizontal direction.
Meanwhile, a fourth telescopic driving mechanism 153 is installed on the overturning platform 152 shown in this embodiment, a telescopic direction of the fourth telescopic driving mechanism 153 is perpendicular to an axial direction of the overturning driving unit 151, a telescopic end of the fourth telescopic driving mechanism 153 is connected to a fourth negative pressure adsorption assembly 154, the fourth negative pressure adsorption assembly 154 includes a fixed support and a plurality of pneumatic suction nozzles installed on the fixed support, wherein four pneumatic suction nozzles can be installed on the fixed support side by side, and each two pneumatic suction nozzles adsorb a collecting tray.
In the actual working process, when the material is taken, the overturning platform 152 is in the first overturning state and is arranged horizontally, the adsorption end of the fourth negative pressure adsorption component 154 is in the same plane with the objective table 141 of the temporary storage positioning mechanism 14, when the material is fed on the object stage 141 of the temporary storage positioning mechanism 14 and the posture of the fed material is corrected, the turnover driving unit 151 and the fourth negative pressure adsorption assembly 154 of the turnover mechanism 15 can be immediately started, while the fourth negative pressure suction assembly 154 sucks the collecting tray, the inversion table 152 is driven by the inversion driving unit 151 to perform 90-degree inversion, so that the collecting tray can be converted from a horizontal placement state to a vertical placement state, so that the overturning platform 152 is in a second overturning state at the welding station, therefore, the vertically-arranged current collecting disc 2 is arranged between the end part to be welded of the battery core 4 and the welding pressure plate, and the current collecting disc 2 can be conveniently welded.
Fig. 10 is a schematic structural diagram of a cell fixing mechanism for welding a current collecting plate according to this embodiment; fig. 11 is a schematic structural view of the pressing mechanism shown in fig. 10 according to the present embodiment.
As shown in fig. 10 and fig. 11, the present embodiment provides a current collecting tray welded battery core fixing mechanism 3, which includes a pressing mechanism 312, where the pressing mechanism 312 is installed on the fixing base 311 and is configured to be disposed on an upper side of the battery core conveying line, the pressing mechanism 312 includes a first telescopic driving mechanism 3121 and a pressing block 3122, a telescopic end of the first telescopic driving mechanism 3121 is vertically disposed and is elastically connected to the pressing block 3122, and the pressing block 3122 has a flexible pressing surface for being attached to a side surface of a battery core 4.
Specifically, in the cell fixing mechanism 3 shown in this embodiment, by providing the pressing mechanism 312, the telescopic end of the pressing mechanism 312 corresponding to the first telescopic driving mechanism 3121 is elastically connected to the pressing block 3122, and the pressing block 3122 covers the outer side surface of the cell 4 by pressing through the flexible pressing surface, when the cell 4 is conveyed to the welding station through the cell conveying line, the first telescopic driving mechanism 3121 may be directly started to drive the pressing block 3122 to descend by a preset displacement, so that the flexible pressing surface on the pressing block 3122 is adaptively attached to the side surface of the cell 4, and when the driving force given to the pressing block 3122 by the first telescopic driving mechanism 3121 is too large, the pressing block 3122 may further adaptively fine tune the pressing state of the cell 4 based on the elastic connection with the first telescopic driving mechanism 3121.
Therefore, the battery cell fixing mechanism 3 shown in this embodiment not only ensures effective contact between the pressing block 3122 and the side surface of the battery cell, but also prevents damage to the side surface of the battery cell 4 due to excessive pressing force of the pressing block 3122, which leads to deformation of the battery cell, so that effective fixation of the battery cell 4 is realized, and current collecting disc welding operation is conveniently performed on the battery cell 4.
As shown in fig. 11, the telescopic end of the first telescopic driving mechanism 3121 shown in this embodiment is connected to a linkage frame 3123, the linkage frame 3123 is connected to a pressing block 3122 through a vertical guide mechanism 3124, and an elastic member 3125 is installed between the linkage frame 3123 and the pressing block 3122, where the elastic member 3125 includes any one of a spring, an elastic strip, and an elastic sheet.
Specifically, the flexible end of the first telescopic driving mechanism 3121 shown in this embodiment can drive the linkage frame 3123 to move downward by a corresponding height when extending out a preset stroke, so that the flexible pressing surface of the pressing block 3122 is attached to the side surface of the electric core 4, and when the electric core 4 is subjected to a large pressing force from the pressing block 3122, based on the principle of force balance, the pressing block 3122 can automatically rise by a certain height under the guidance of the vertical guiding mechanism 3124, and reach a balance under the elastic action of the elastic member 3125 between the linkage frame 3123 and the pressing block 3122. So, both ensured that the flexible compact surface of compact heap 3122 is attached closely in the side of electric core 4, prevented again that compact heap 3122 from exerting too big pressure to electric core and covering power to when implementing better fixed to electric core 4, still form effectual protection to electric core 4, avoid electric core 4 to cover power too big and warp because of pressing.
In one embodiment, the vertical guide mechanism 3124 shown in this embodiment includes a guide sleeve and a guide rod; the guide shaft sleeve is arranged on the linkage frame 3123 and sleeved on the side surface of the guide rod; the limiting plate is connected to the upper end of guide bar, and compact heap 3122 is connected to the lower extreme of guide bar.
Further, in order to ensure the balance between the lifting motion and the stress of the pressing block 3122, the set of vertical guide mechanism 3124 shown in this embodiment is provided with two guide shaft sleeves and two guide rods, the upper ends of the two guide rods are connected with a limiting plate, and the lower ends of the two limiting plates are connected with the pressing block 3122.
In another embodiment, in order to ensure a reliable connection between the vertical guide mechanism 3124 and the pressing block 3122 and enable the pressing block 3122 to have a flexible pressing surface for being attached to a side surface of a battery cell, the pressing block 3122 shown in this embodiment includes a connecting block and a flexible pressing block, the vertical guide mechanism 3124 is connected to one end of the connecting block, and the other end of the connecting block is connected to one end of the flexible pressing block away from the flexible pressing surface, where the flexible pressing block may be a sponge block known in the art.
Further, in order to facilitate the realization of pressing the electric cores of a plurality of welding stations simultaneously, the pressing block 3122 shown in this embodiment includes a plurality of and corresponds to the vertical guide mechanism 3124 one by one.
As shown in fig. 11, the pressing block 3122 shown in this embodiment is specifically provided with two blocks, the linking frame 3123 shown in this embodiment is respectively connected to the two pressing blocks 3122 through two sets of vertical guide mechanisms 3124, and an elastic member 3125 is provided between each pressing block 3122 and the linking frame 3123.
As shown in fig. 10, based on the modification of the above-mentioned embodiment, the present embodiment is further provided with a clamping mechanism 313 mounted on the fixing base 311, two clamping ends of the clamping mechanism 313 are used for being oppositely disposed at two sides of the cell conveying line, one clamping end of the clamping mechanism 313 is used for abutting against one end of the cell 4, and the other clamping end of the clamping mechanism 313 is formed as a welding pressing plate 3134 for clamping the current collecting tray 2 between the other end of the cell 4 and the welding pressing plate 3134.
Specifically, the clamping mechanism 313 shown in this embodiment includes a second telescopic driving mechanism 3131 and a third telescopic driving mechanism 3133, one of the clamping ends of the clamping mechanism 313 is formed as a positioning head 3132, the positioning head 3132 is used for coaxially abutting against one end of the electrical core 4, the telescopic end of the second telescopic driving mechanism 3131 is connected to the positioning head 3132, and the telescopic end of the third telescopic driving mechanism 3133 is connected to the welding pressing plate 3134.
Therefore, when the pressing mechanism 312 shown in the above embodiment presses the side surface of the battery cell 4, while the battery cell 4 is fixed on the battery cell conveying line, the second telescopic driving mechanism 3131 may be further started, the positioning head 3132 axially positions one end of the battery cell, and the third telescopic driving mechanism 3133 is started, the third telescopic driving mechanism 3133 drives the welding pressing plate 3134 to move along the axial direction of the battery cell 4, so as to clamp the current collecting disc 2 between the other end of the battery cell 4 and the welding pressing plate 3134, and while the axial clamping and fixing of the battery cell 4 are realized, it is further convenient to weld the current collecting disc 2 to the end portion of the battery cell 4 through the laser spot welding machine according to the welding path reserved on the welding pressing plate 3134.
It should be noted that the first telescopic driving mechanism 3121, the second telescopic driving mechanism 3131, the third telescopic driving mechanism 3133 and the fourth telescopic driving mechanism 153 shown in the present embodiment may be air cylinders known in the art.
Based on the improvement of above-mentioned embodiment, the current collector welding production line that this embodiment shows includes that electric core positive current collector welding production line and electric core negative pole current collector welding production line, and electric core positive current collector welding production line corresponds with electric core negative pole current collector welding production line's head and tail and is connected.
Specifically, the welding production line of the positive electrode current collector of the battery cell shown in this embodiment has the same structure as the welding production line of the negative electrode current collector of the battery cell, and includes the current collector loading device 1 and the battery cell fixing mechanism 3 shown in the above embodiment, the welding production line of the positive electrode current collector of the battery cell is used for welding the current collector at the positive electrode end of the battery cell 4, the welding production line of the negative electrode current collector of the battery cell is used for welding the negative electrode current collector at the negative electrode end of the battery cell 4, the tail end of the welding production line of the positive electrode current collector of the battery cell can be connected with the head end of the welding production line of the negative electrode current collector of the battery cell through the battery cell transferring mechanism, and the tail end of the welding production line of the negative electrode current collector of the battery cell can be connected with the head end of the welding production line.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A collector plate welding production line, which is characterized in that,
the method comprises the following steps: the current collecting disc feeding device and the battery cell fixing mechanism;
the collecting tray feeding device comprises a multi-station distributing mechanism, a temporary storage positioning mechanism and a turnover mechanism which are sequentially arranged; the multi-station distributing mechanism is used for transferring the collecting tray to different welding stations, and the temporary storage positioning mechanism and the turnover mechanism are arranged on each welding station in a one-to-one correspondence manner;
the cell fixing mechanism is used for connecting the turnover mechanism of the welding station, the cell fixing mechanism comprises a pressing mechanism, the pressing mechanism is used for being arranged on the upper side of the cell conveying line, the pressing mechanism comprises a first telescopic driving mechanism and a pressing block, the telescopic end of the first telescopic driving mechanism is vertically arranged and is elastically connected with the pressing block, and the pressing block is provided with a flexible pressing surface used for being attached to the side surface of a cell.
2. The assembly tray welding production line of claim 1, wherein the telescopic end of the first telescopic driving mechanism is connected to a linkage frame, the linkage frame is connected to the pressing block through a vertical guiding mechanism, and an elastic member is installed between the linkage frame and the pressing block;
the pressing block comprises a connecting block and a flexible pressing block, the vertical guide mechanism is connected with one end of the connecting block, and the other end of the connecting block is connected with one end, far away from the flexible pressing surface, of the flexible pressing block.
3. The collector tray welding line of claim 1, wherein the cell fixing mechanism further comprises a clamping mechanism, two clamping ends of the clamping mechanism are arranged on two sides of the cell conveying line, one of the clamping ends of the clamping mechanism is used for abutting against one end of the cell, and the other clamping end of the clamping mechanism is formed as a welding pressing plate for clamping the collector tray between the other end of the cell and the welding pressing plate.
4. The collector tray welding production line according to any one of claims 1 to 3, wherein the multi-station distribution mechanism comprises a plurality of transfer units, the plurality of transfer units are movable along a preset walking path for transferring the collector trays to the corresponding welding stations, and the transfer units are provided with first negative pressure adsorption assemblies for adsorbing the collector trays.
5. The collecting tray welding production line according to claim 4, wherein the transfer unit includes a linear module, a lifting adjustment mechanism and the first negative pressure adsorption assembly, the lifting adjustment mechanism is mounted on a sliding table of the linear module, and the lifting adjustment mechanism is connected with the first negative pressure adsorption assembly; the transferring unit comprises a first transferring unit and a second transferring unit, and the second transferring unit is arranged on the sliding table of the corresponding linear module of the first transferring unit.
6. The collector tray welding line according to any one of claims 1 to 3, wherein the collector tray feeding device further comprises a feeding positioning mechanism, wherein a plurality of contour grooves are formed on the feeding positioning mechanism, and the contour grooves are used for placing the collector tray;
the feeding positioning mechanism is provided with a feeding robot, the feeding robot comprises a multi-degree-of-freedom mechanical arm and a second negative pressure adsorption assembly, and the second negative pressure adsorption assembly is installed at the execution end of the multi-degree-of-freedom mechanical arm;
the feeding positioning mechanism is further provided with a first incoming material detection sensor and a collector plate positioning mechanism, the detection end of the first incoming material detection sensor corresponds to the contour groove, the collector plate positioning mechanism is provided with a positioning pressure head corresponding to the contour groove, and the first incoming material detection sensor is in communication connection with the collector plate positioning mechanism.
7. The collector tray welding line according to any one of claims 1 to 3, wherein an object stage and a positioning clamping jaw are arranged on the temporary storage positioning mechanism, the positioning clamping jaw is horizontally mounted on the upper side of the object stage, a profiling clamping groove for corresponding to the collector tray is formed at a clamping end of the positioning clamping jaw, and the clamping end of the positioning clamping jaw corresponds to the object stage.
8. The collector plate welding line as claimed in claim 7, wherein the stage has a first through hole and a second through hole formed therein; a third negative pressure adsorption component is arranged in the first through hole; and a second incoming material detection sensor corresponding to the second through hole is arranged on the temporary storage material positioning mechanism and is respectively in communication connection with the positioning clamping jaw and the third negative pressure adsorption component.
9. The collector tray welding production line of any one of claims 1 to 3, wherein the turnover mechanism comprises a turnover driving unit, a turnover table and a fourth negative pressure adsorption assembly, wherein an output end of the turnover driving unit is connected with the turnover table, and one end of the turnover table is provided with the fourth negative pressure adsorption assembly; the turnover table comprises a first turnover state and a second turnover state, when the turnover table is in the first turnover state, the adsorption end of the fourth negative pressure adsorption component faces upwards, and the turnover table is used for placing the table top of the collecting tray on the temporary storage positioning mechanism, and when the turnover table is in the second turnover state, the adsorption end of the fourth negative pressure adsorption component faces to the horizontal direction.
10. The assembly tray welding production line of any one of claims 1 to 3, wherein the assembly tray welding production line comprises an electric core anode assembly tray welding production line and an electric core cathode assembly tray welding production line, the electric core anode assembly tray welding production line is correspondingly connected with the electric core cathode assembly tray welding production line in a head-tail manner, the electric core anode assembly tray welding production line is used for implementing assembly tray welding on the anode end of the electric core, and the electric core cathode assembly tray welding production line is used for implementing assembly tray welding on the cathode end of the electric core.
CN202011061219.4A 2020-09-30 2020-09-30 Current collecting disc welding production line Active CN112247356B (en)

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