CN217701835U - Be applied to automatic radium-shine welding production line of 3C lithium battery tab - Google Patents

Abstract

The utility model provides an automatic laser welding production line applied to 3C lithium battery tab, which comprises a code scanning feeding module, a first laser welding module, a first overturning module, a second laser welding module and a welding spot detection module which are independently arranged and sequentially distributed in a linear type combination manner to form a welding production line, wherein the welding production line is used for sequentially scanning codes, welding front, overturning 180 degrees, welding back and welding spot detection on carrier products conveyed to corresponding stations; sweep sign indicating number material loading module, radium-shine welding module one, upset module one, radium-shine welding module two, solder joint detection module and all include independent workstation and install a set of carrier material loading line unit, year box return wire unit and apron return wire unit on corresponding the workstation, the utility model discloses automated production efficiency is higher, and still other constructional equipment that have the same assembly line station of independent between each modular unit to accomplish the operation of other technologies.

Description

Be applied to automatic radium-shine welding production line of 3C lithium battery tab

Technical Field

The utility model relates to a radium-shine welding production line, especially one kind is applied to automatic radium-shine welding production line of 3C lithium battery tab.

Background

Welding is an important part in the production and processing processes of the electronic industry, the traditional welding operation applied to the 3C lithium battery tab is in a laser welding production line, the production line generally consumes a long time for transition, so that the processing efficiency is low, and the current welding production line generally also adopts an integral production line structure form, so that local quick replacement production or free combination production with other process equipment is difficult to achieve.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a be applied to automatic radium-shine welding production line of 3C lithium battery tab not only can realize the higher production effect of automation efficiency, moreover through being independent multiunit modular unit form with the whole equipment split, and still other constructional devices that have the same flowing water station of independent between each modular unit of independent combination to accomplish the operation of other technologies.

The utility model provides a following technical scheme:

an automatic laser welding production line applied to a 3C lithium battery tab comprises a code scanning feeding module, a first laser welding module, a first overturning module, a second laser welding module and a welding spot detection module which are independently arranged and sequentially distributed in a linear type combination manner to form a welding production line, wherein the welding production line is used for sequentially scanning codes, welding the front side, overturning 180 degrees, welding the back side and detecting welding spots of carrier products conveyed to corresponding stations;

the code scanning feeding module, the first laser welding module, the first overturning module, the second laser welding module and the welding point detection module respectively comprise independent workbenches, a set of carrier feeding line units, carrier box return line units and cover plate return line units, wherein the carrier feeding line units, the carrier box return line units and the cover plate return line units are arranged on the corresponding workbenches;

the carrier feeding line units are arranged above the workbench, the carrier feeding line units are combined to form a linear type and are sequentially distributed for conveying carriers containing products, each carrier comprises a carrying box for containing the products and a cover plate covering the carrying box, each cover plate backflow line unit is combined to form a linear type and is parallelly distributed on one side of the carrier feeding line unit, the cover plate is grabbed by a horizontal shifting mechanism and then horizontally arranged on the cover plate backflow line unit to flow back at the tail end of the production line, each carrying box backflow line unit is combined to form a linear type and is arranged below the corresponding workbench, and at the tail end of the production line, the carrying box flows into a carrying box lifting machine and flows back to the carrying box backflow line unit after transition, the carrying box lifting machine is equipment used for realizing transition between two layers of conveying lines in the product conveying process in the prior art, and a laser welding module I and a laser welding module II are laser welding joint equipment used for realizing product welding, the prior art is adopted here, and further description is omitted;

furthermore, in order to realize the code scanning and detection for the front and the back of the carrier product twice, a third turnover mechanism and a fourth turnover mechanism can be additionally arranged,

the third turnover mechanism is driven by the corresponding third linear module sliding table to reciprocate along the linear direction of the carrier feeding line unit, is used for grabbing the carrier on the carrier feeding line unit to overturn for 180 degrees in the reciprocating motion, and is matched with the code scanning and feeding module to complete code scanning of the front side and the back side of a product in the carrier;

still install tilting mechanism four on the workstation for solder joint detection module, tilting mechanism four is along the straight line direction back and forth movement of carrier material loading line unit under the drive of the straight line module slip table four that corresponds, and be used for snatching the carrier on the carrier material loading line unit and overturn 180 in the back and forth movement, and detect the solder joint that the module cooperation was accomplished product front and reverse side in the carrier with the solder joint and detect, and because tilting mechanism three and tilting mechanism four are by straight line module slip table three and straight line module slip table four corresponding drive back and forth movement, so, in the upset in-process, the while can also last carry out the ascending transportation of straight line direction of delivery, thereby can further shorten man-hour, in order to improve holistic machining efficiency.

Preferably, the first turnover module comprises a first turnover mechanism fixedly mounted on the corresponding workbench, the first turnover mechanism, the third turnover mechanism and the fourth turnover mechanism are the same turnover unit, the turnover unit comprises a turnover mounting frame, a lifting driving cylinder, a lifting mounting plate, an opening clamp pneumatic finger cylinder, an opening clamp clamping jaw mounting plate, a rotary cylinder and a clamping cylinder, the lifting driving cylinder used for driving the lifting mounting plate to lift along the longitudinal direction is mounted on the turnover mounting frame, the opening clamp pneumatic finger cylinder is mounted on the lifting mounting plate, a group of opening clamp clamping jaw mounting plates are mounted on two clamping jaws of the opening clamp pneumatic finger cylinder, the rotary cylinder is mounted on the opening clamp clamping jaw mounting plate, the rotary end of the rotary cylinder is provided with the clamping cylinder used for clamping at two ends of the carrier, the turnover unit is clamped at two ends of the carrier through the clamping cylinder, and overturns 180 degrees by being driven by the rotary cylinder after the opening clamp pneumatic finger cylinder rises for a certain distance along with the lifting mounting plate, and the turnover operation of the carrier products is completed.

Preferably, sweep carrier material loading line unit below sign indicating number material loading module and solder joint detection module and still install two sets of climbing mechanism, one of them group climbing mechanism is used for the carrier of jacking motion to its top, and make it break away from carrier material loading line unit back by the upset unit cohesion centre gripping upset that linear motion targets in place, and another group climbing mechanism is used for supporting the carrier after the upset, and make its decline place carrier material loading line unit in once more on, climbing mechanism is including installing the jacking cylinder on the workstation and have the jacking board that the jacking cylinder drive goes up and down, and one side of jacking board still is provided with and is used for blockking spacing limit stop to the carrier that moves to the jacking board top, limit stop is gone up and down by the dog cylinder drive of installing on the workstation.

Preferably, sweep a yard material loading module and solder joint and detect the module and all include triaxial actuating mechanism, triaxial actuating mechanism includes X to sharp slip table, Y is parallel to sharp slip table and Z to sharp slip table, X is parallel to the expansion end linear motion direction of sharp slip table and the last carrier direction of motion of carrier material loading line unit, and be used for driving Z to sharp slip table along X to sharp reciprocating motion, its stiff end is installed on Y to sharp slip table, and along with Y to the expansion end of sharp slip table along Y to being sharp reciprocating motion, sweep a yard rifle and install the expansion end to sharp slip table at the Z of sweeping yard material loading module, the Z that detects the module at the solder joint is installed to the expansion end of sharp slip table to the detection camera.

Preferably, in order to enable each link operation in the production line to have a higher safety protection effect, the upper protection plate frame is covered on the periphery of the top of the workbench, the lower protection plate frame is covered on the periphery of the bottom of the workbench, the rollers for facilitating displacement adjustment and the fixed support for supporting and positioning are further mounted on the bottom side of the lower protection plate frame, and the upper protection plate frame and the lower protection plate frame are further provided with channel openings for allowing the carriers, the cover plate and the carriers to pass through.

Preferably, in order to make the production line have better receipts and examine categorised effect, can set for solder joint detection module and still include NG transport mechanism, NG transport mechanism is used for will detecting unqualified welding product and transports to the NG line, in order to simplify equipment structure, so can set for horizontal transfer mechanism and NG transport mechanism and install side by side on the horizontal support that is located the welding production line tail end, install two sets of horizontal drive cylinder on the horizontal support, NG line and apron return wire unit place the both sides of carrier material loading line unit respectively in, horizontal transfer mechanism and NG transport mechanism are driven by corresponding horizontal drive cylinder and are used for respectively between carrier material loading line unit and apron return wire unit and between NG line and carrier material loading line unit horizontal reciprocating motion, still install on the both sides support of carrier material loading line unit and be used for fixing a position the locating plate in the middle compartment notch between apron and year box, the locating plate moves to the compartment notch under the drive of locating cylinder, and the horizontal transfer mechanism includes and holds lifting horizontal movement to the NG on the apron material loading line unit after being used for chucking the apron and carry the locating plate by carrying the box when needing, the apron can be better holding a position the locating plate earlier and carry the locating plate and can be carried the transport mechanism again because the lifting mechanism and the horizontal transfer mechanism and do the transport mechanism and not make up the hanging the moving of the transferring to the hanging of the well-holding of the claw in detail.

The utility model has the advantages that:

1. the utility model discloses production line is for being applied to 3C lithium battery tab automatic laser welding production line, and its process steps are in proper order for sweeping sign indicating number, welding front, upset 180 °, welding reverse side and solder joint and detect, and be mutually independent between the structure for realizing each operation, and the while is again for being linear type combination distribution setting in order, so, not only can realize the independent assortment between each modular unit, for example: the first overturning module is replaced, or a dispensing equipment module with the same flow station is inserted and additionally arranged between the second laser welding module and the welding spot detection module, and when the dispensing equipment module is added, the workbench is only required to be pushed to freely move under the assistance of the roller, and after the dispensing equipment module is moved in place, the fixed support is used for positioning, so that the addition of other processes or the free replacement operation of the equipment can be conveniently and rapidly completed;

2. owing to still install tilting mechanism three on the workstation that is used for the installation to sweep a yard material loading module, and still install tilting mechanism four on the workstation that is used for the solder joint to detect the module, so still can make sweep a yard material loading module when sweeping a yard operation and solder joint detection module when carrying out the solder joint detection, the sign indicating number and the detection of sweeping of tow sides all can be realized, also can not cause great upset to delay simultaneously, thereby can ensure to have higher production efficiency on the basis of complete technology step.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of the upper protective plate frame of FIG. 1 with the upper protective plate frame removed;

FIG. 3 is a schematic structural diagram of a vertical body of the code scanning and feeding module with an upper protection plate frame and a lower protection plate frame removed;

FIG. 4 is a schematic perspective view of the solder joint inspection module with the upper protective plate frame removed;

FIG. 5 is a schematic perspective view of the first turnover module with the upper protection plate frame and the lower protection plate frame removed;

fig. 6 is a schematic structural view of the flipping unit;

FIG. 7 is a schematic view of a jacking mechanism;

fig. 8 is a schematic structural view of the horizontal transfer mechanism and the NG conveyance mechanism;

FIG. 9 is a schematic view of the horizontal transfer mechanism grasping the cover plate;

FIG. 10 is a schematic view of the structure of the roller and the fixing support;

labeling in the figure: the device comprises a code scanning feeding module, a laser welding module I, a turnover module I, a laser welding module II, a welding spot detection module 5, a carrier 6, a workbench 7, a carrier feeding line unit 8, a carrier box return line unit 9, a cover plate return line unit 10, a horizontal transfer mechanism 11, a turnover mechanism three 12, a turnover mechanism four 13, a linear module sliding table three 14, a linear module sliding table four 15, an upper protection plate frame 16, a lower protection plate frame 17, a roller 18, a fixed support 19, a turnover mounting frame 31, a lifting driving cylinder 32, a lifting mounting plate 33, an opening clamping pneumatic finger cylinder 34, an opening clamping jaw mounting plate 35, a rotating cylinder 36, a clamping cylinder 37, a jacking mechanism 81, a limiting cylinder 82, a stop block cylinder 83, a linear sliding table X51, a linear sliding table Y, a linear sliding table Z53, a linear sliding table NG mechanism 54, an NG 55, a horizontal support 56, a horizontal support 57, a horizontal stop block 59, a positioning cylinder 111, positioning cylinder spacing notches 112, positioning grooves 112 and positioning blocks 112.

Detailed Description

With reference to fig. 1 to 10, an automatic laser welding production line applied to a 3C lithium battery tab includes a code scanning feeding module 1, a laser welding module one 2, an overturning module one 3, a laser welding module two 4, and a welding spot detection module 5, which are independently arranged from each other and sequentially combined and distributed in a linear manner to form a welding production line, wherein the welding production line is used for sequentially scanning codes, welding a front surface, overturning 180 degrees, welding a back surface, and detecting welding spots of a carrier 6 product conveyed to a corresponding station;

the code scanning feeding module 1, the laser welding module I2, the turnover module I3, the laser welding module II 4 and the welding spot detection module 5 respectively comprise an independent workbench 7, and a carrier feeding line unit 8, a carrier box return line unit 9 and a cover plate return line unit 10 which are arranged on the corresponding workbench 7;

the carrier feeding line units 8 are arranged above the workbench 7, the carrier feeding line units 8 are combined to form a linear type and are sequentially distributed to convey carriers 6 containing products, each carrier 6 comprises a carrier box for containing the products and a cover plate covering the carrier box, each cover plate backflow line unit 10 is combined to form a linear type and is parallelly distributed on one side of the carrier feeding line unit 8, the cover plate is grabbed by a horizontal transfer mechanism 11 and is horizontally arranged on the cover plate backflow line unit 10 to flow back at the tail end of the production line, each carrier box backflow line unit 9 is combined to form a linear type and is arranged below the corresponding workbench 7, and at the tail end of the production line, the carrier boxes flow into the carrier box lifters and flow back to the carrier box backflow line units 9 after transition, the carrier box lifters are devices used for realizing transition between two layers of conveying lines in the product conveying process in the prior art, and the laser welding module I2 and the laser welding module II 4 are devices used for realizing product welding, the prior art is adopted, and welding joints are not needed any more;

furthermore, in order to realize code scanning and detection for the front surface and the back surface of the carrier 6 product twice, a third turnover mechanism 12 and a fourth turnover mechanism 13 can be additionally arranged,

the workbench 7 for mounting the code scanning feeding module 1 is also provided with a third turnover mechanism 12, the third turnover mechanism 12 is driven by a third corresponding linear module sliding table 14 to reciprocate along the linear direction of the carrier feeding line unit 8, and is used for grabbing the carrier 6 on the carrier feeding line unit 8 to turn over 180 degrees in the reciprocating motion, and is matched with the code scanning feeding module 1 to complete code scanning of the front surface and the back surface of a product in the carrier 6;

still install tilting mechanism four 13 on the workstation 7 for solder joint detection module 5, tilting mechanism four 13 is along the rectilinear direction reciprocating motion of carrier material loading line unit 8 under the drive of the four 15 of sharp module slip tables that correspond, and be used for snatching carrier 6 on the carrier material loading line unit 8 and overturn 180 in the reciprocating motion, and detect the solder joint that the cooperation of module 5 was accomplished in the carrier 6 positive and reverse with the solder joint, and because tilting mechanism three 12 and tilting mechanism four 13 correspond the drive reciprocating motion by three 14 of sharp module slip tables and four 15 of sharp module slip tables, so, in the upset process, simultaneously can also last the ascending transportation of straight line direction of delivery, thereby can further shorten man-hour, in order to improve holistic machining efficiency.

The turnover module I3 comprises a turnover mechanism I fixedly installed on the corresponding workbench 7, the turnover mechanism I, a turnover mechanism III 12 and a turnover mechanism IV 13 are the same turnover unit, the turnover unit comprises a turnover installation frame 31, a lifting driving cylinder 32, a lifting installation plate 33, an opening clamp pneumatic finger cylinder 34, an opening clamp clamping jaw installation plate 35, a rotary cylinder 36 and a clamping cylinder 37, the lifting driving cylinder 32 used for driving the lifting installation plate 33 to lift along the longitudinal direction is installed on the turnover installation frame 31, the opening clamp pneumatic finger cylinder 34 is installed on the lifting installation plate 33, a group of opening clamp clamping jaw installation plates 35 are installed on two clamping jaws of the opening clamp pneumatic finger cylinder 34, the rotary cylinder 36 is installed on the opening clamp clamping jaw installation plate 35, the clamping cylinders 37 used for clamping at two ends of the carrier 6 are installed at the rotating end of the turnover unit, the turnover unit is tightly held at two ends of the carrier 6 through the clamping cylinders 37, and is driven by the rotary cylinder 36 to turn over 180 degrees after the lifting installation plate 33 rises for a certain distance along with the driving, and the turnover operation of the carrier 6 products is completed.

Sweep a yard material loading module 1 and solder joint detection module 5's carrier material loading line unit 8 below and still install two sets of climbing mechanism 81, one of them group climbing mechanism 81 is used for jacking motion to the carrier 6 of its top, and make it break away from carrier material loading line unit 8 back by the upset unit cohesion centre gripping upset that linear motion put in place, and another group climbing mechanism 81 is used for supporting carrier 6 after the upset, and make its decline arrange carrier material loading line unit 8 in once more, climbing mechanism 81 is including installing the jacking cylinder on workstation 7 and the jacking board that has the jacking cylinder drive to go up and down, and one side of jacking board still is provided with and is used for blockking spacing limit stop 82 to the carrier 6 that moves to the jacking board top, limit stop 82 is driven by the dog cylinder 83 of installing on workstation 7 and is gone up and down.

Sweep a yard material loading module 1 and solder joint and detect module 5 and all include triaxial actuating mechanism, triaxial actuating mechanism includes X to sharp slip table 51, Y is to sharp slip table 52 and Z to sharp slip table 53, X is parallel to the expansion end linear motion direction of sharp slip table 51 and the motion direction of carrier 6 on the carrier material loading line unit 8, and be used for driving Z to sharp slip table 53 along X to linear reciprocating motion, its stiff end is installed on Y to sharp slip table 52, and be linear reciprocating motion along Y to the expansion end of sharp slip table 52 along with Y, sweep a yard rifle and install the expansion end to sharp slip table 53 at the Z of sweeping yard material loading module 1, the Z that detects the module 5 at the solder joint detects the expansion end of module 53 to sharp slip table 53.

In order to enable each link operation in the production line to have a high safety protection effect, an upper protection plate frame 16 is covered on the periphery of the top of the workbench 7, a lower protection plate frame 17 is covered on the periphery of the bottom of the workbench 17, a roller 18 for facilitating displacement adjustment and a fixed support 19 for supporting and positioning are further mounted on the bottom side of the lower protection plate frame 17, and a channel opening for passing through a loading box, a cover plate and a loading tool 6 is further formed in the upper protection plate frame 16 and the lower protection plate frame 17.

In order to make the production line have better receiving, checking and classifying effects, the welding spot detection module 5 can be set to further comprise an NG carrying mechanism 54, the NG carrying mechanism 54 is used for carrying the detected unqualified welding products to an NG line 55, in order to simplify the equipment structure, the horizontal transfer mechanism 11 and the NG carrying mechanism 54 can be set to be arranged on a horizontal bracket 56 at the tail end of the welding production line side by side, two groups of horizontal driving cylinders 57 are arranged on the horizontal bracket 56, the NG line 55 and the cover plate reflow line unit 10 are respectively arranged at two sides of the carrier feeding line unit 8, the horizontal transfer mechanism 11 and the NG carrying mechanism 54 are driven by the corresponding horizontal driving cylinders 57 to respectively horizontally reciprocate between the carrier feeding line unit 8 and the cover plate reflow line unit 10 and between the NG line 55 and the carrier feeding line unit 8, the positioning plate 58 is driven by the positioning cylinder 59 to move into the gap 112, the horizontal transfer mechanism 11 comprises a positioning plate 111 for tightly holding the cover plate and lifting the cover plate onto the horizontal transfer mechanism, and the cover plate lifting mechanism can be arranged on the cover plate by the lifting claw 111, therefore, the horizontal transfer mechanism can be better replaced by the positioning cylinder 54 and the lifting mechanism by the lifting driving cylinder 111.

The utility model discloses a theory of operation is: when in use, the lithium battery pole ear is arranged in the carrier 6, the materials are fed to the carrier feeding line unit 8 of the code scanning feeding module 1, and after the code scanning feeding module 1, the laser welding module I2, the turnover module I3, the laser welding module II 4 and the welding spot detection module 5 are combined and aligned, the carrier feeding line units 8 are in a linear type and are sequentially abutted arrangement, so the carrier 6 can be sequentially conveyed through the carrier feeding line unit 8, in the conveying process, because the worktable 7 for installing the code scanning feeding module 1 is also provided with the turnover mechanism III 12 and the worktable 7 for the welding spot detection module 5 is also provided with the turnover mechanism IV 13, the code scanning and detection of the front and back surfaces of the code scanning feeding module 1 can be realized when the code scanning operation is carried out and the welding spot detection module 5 is carried out the welding spot detection, meanwhile, great delay of turning operation cannot be caused, so that high production efficiency can be guaranteed on the basis of complete process steps, the carrier 6 continues to move continuously along with the feeding line unit after the welding operation of the front side is completed at the front side welding station of the laser welding module I2, the carrier enters the turning station of the turning module I3 to be turned, and then continues to move continuously along with the feeding line unit after the turning is completed, the carrier enters the welding station of the laser welding module II 4 to complete the welding operation of the back side, when the carrier is conveyed intensively, the three stations can be operated simultaneously, so that the processing efficiency is further improved, the welding operation of conveying the carrier to the laser welding module I2 and the laser welding module II 4 for welding is the welding operation of the prior art, and detailed description is omitted again.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. An automatic laser welding production line applied to a 3C lithium battery tab is characterized by comprising a code scanning feeding module (1), a laser welding module I (2), an overturning module I (3), a laser welding module II (4) and a welding spot detection module (5) which are independently arranged and sequentially distributed in a linear combination manner to form a welding production line, wherein the welding production line is used for sequentially scanning codes, welding a front surface, overturning by 180 degrees, welding a back surface and detecting welding spots of a carrier (6) product conveyed to a corresponding station;

the code scanning feeding module (1), the laser welding module I (2), the overturning module I (3), the laser welding module II (4) and the welding spot detection module (5) respectively comprise an independent workbench (7), and a carrier feeding line unit (8), a carrier box return line unit (9) and a cover plate return line unit (10) which are arranged on the corresponding workbench (7);

the carrier feeding line units (8) are arranged above the workbench (7), the carrier feeding line units (8) are combined to form a linear type and are sequentially distributed for conveying carriers (6) containing products, each carrier (6) comprises a carrying box for containing the products and a cover plate covering the carrying box, the cover plate backflow line units (10) are combined to form a linear type and are parallelly distributed on one side of the carrier feeding line units (8), the cover plate is grabbed by a horizontal shifting mechanism (11) and then horizontally arranged on the cover plate backflow line units (10) to backflow at the tail end of the production line, the carrying box backflow line units (9) are combined to form a linear type and are arranged below the corresponding workbench (7), and at the tail end of the production line, the carrying boxes flow into a carrying box hoisting machine and flow back onto the carrying box backflow line units (9) after transition;

a third turnover mechanism (12) is further mounted on the workbench (7) for mounting the code scanning feeding module (1), the third turnover mechanism (12) is driven by the corresponding third linear module sliding table (14) to reciprocate along the linear direction of the carrier feeding line unit (8), and is used for grabbing the carrier (6) on the carrier feeding line unit (8) to overturn for 180 degrees in the reciprocating motion, and is matched with the code scanning feeding module (1) to complete code scanning of the front surface and the back surface of a product in the carrier (6);

still install tilting mechanism four (13) on workstation (7) for solder joint detection module (5), tilting mechanism four (13) are along the rectilinear direction reciprocating motion of carrier material loading line unit (8) under the drive of the sharp module slip table four (15) that correspond, and are used for snatching carrier (6) on the carrier material loading line unit (8) and overturn 180 in reciprocating motion to detect the solder joint that the product was openly and the reverse side in carrier (6) was accomplished in the cooperation with solder joint detection module (5).

2. The automatic laser welding production line applied to 3C lithium battery tabs according to claim 1 is characterized in that one turnover module (3) comprises a first turnover mechanism fixedly mounted on a corresponding workbench (7), the first turnover mechanism, the third turnover mechanism (12) and the fourth turnover mechanism (13) are the same turnover unit, the turnover unit comprises a turnover mounting frame (31), a lifting driving cylinder (32), a lifting mounting plate (33), an opening clamp pneumatic finger cylinder (34), an opening clamp clamping jaw mounting plate (35), a rotating cylinder (36) and a clamping cylinder (37), the lifting driving cylinder (32) used for driving the lifting mounting plate (33) to lift along the longitudinal direction is mounted on the turnover mounting frame (31), the opening clamp pneumatic finger cylinder (34) is mounted on the lifting mounting plate (33), a set of opening clamp clamping jaw mounting plates (35) are mounted on two clamping jaws of the opening clamp pneumatic finger cylinder (34), the rotating cylinder (36) is mounted on the opening clamp clamping jaw mounting plate (35), and the rotating end of the rotating cylinder is mounted on a clamping cylinder (37) used for clamping two ends of a carrier (6).

3. The automatic laser welding production line applied to the 3C lithium battery tab of claim 1, wherein two sets of jacking mechanisms (81) are further installed below the carrier feeding line unit (8) of the code scanning feeding module (1) and the welding spot detection module (5), one set of jacking mechanism (81) is used for jacking the carrier (6) moving above the jacking mechanism and enabling the carrier to be separated from the carrier feeding line unit (8) and then clamped and overturned by the overturning unit in place through linear motion, the other set of jacking mechanism (81) is used for supporting the carrier (6) after overturning and enabling the carrier to descend and be placed on the carrier feeding line unit (8) again, the jacking mechanism (81) comprises a jacking cylinder installed on the workbench (7) and a jacking plate driven to ascend and descend by the jacking cylinder, a limit stop (82) used for limiting the carrier (6) moving above the jacking plate is further arranged on one side of the jacking plate, and the limit stop (82) is driven to ascend and descend by a stop (83) installed on the workbench (7).

4. The automatic laser welding production line applied to the 3C lithium battery tab is characterized in that the code scanning feeding module (1) and the welding spot detection module (5) respectively comprise a three-axis driving mechanism, the three-axis driving mechanism comprises an X-direction linear sliding table (51), a Y-direction linear sliding table (52) and a Z-direction linear sliding table (53), the linear motion direction of the movable end of the X-direction linear sliding table (51) is parallel to the motion direction of the carrier (6) on the carrier feeding line unit (8) and is used for driving the Z-direction linear sliding table (53) to do linear reciprocating motion along the X-direction, the fixed end of the Z-direction linear sliding table (53) is installed on the Y-direction linear sliding table (52) and does linear reciprocating motion along the Y-direction along the movable end of the Y-direction linear sliding table (52), the code scanning gun is installed at the movable end of the Z-direction linear sliding table (53) of the code scanning feeding module (1), and the detection camera is installed at the movable end of the Z-direction linear sliding table (53) of the welding spot detection module (5).

5. The automatic laser welding production line applied to the 3C lithium battery tab as claimed in claim 1, wherein an upper protection plate frame (16) is covered on the periphery of the top of the workbench (7), a lower protection plate frame (17) is covered on the periphery of the bottom of the workbench (7), rollers (18) for convenient displacement adjustment and fixed supports (19) for supporting and positioning are further mounted on the bottom side of the lower protection plate frame (17), and passage openings for passing through of the loading boxes, the cover plates and the loading tools (6) are further formed in the upper protection plate frame (16) and the lower protection plate frame (17).

6. The automatic laser welding production line for the 3C lithium battery tab as claimed in claim 1, characterized in that the welding spot detection module (5) also comprises an NG carrying mechanism (54), the NG carrying mechanism (54) is used for carrying the detected unqualified welding products to an NG line (55), the horizontal transfer mechanism (11) and the NG carrying mechanism (54) are arranged on a horizontal bracket (56) at the tail end of the welding production line side by side, two groups of horizontal driving cylinders (57) are arranged on the horizontal bracket (56), the NG line (55) and the cover plate return line unit (10) are respectively arranged at two sides of the carrier feeding line unit (8), the horizontal transfer mechanism (11) and the NG carrying mechanism (54) are driven by corresponding horizontal driving cylinders (57) for horizontal reciprocating motion between the carrier feeding line unit (8) and the cover plate return line unit (10) and between the NG line (55) and the carrier feeding line unit (8), respectively, the brackets at two sides of the carrier feeding line unit (8) are also provided with positioning plates (58) which are used for positioning in a middle partition notch between the cover plate and the carrying box, the positioning plate (58) moves into the spacing notches (112) under the driving of the positioning cylinder (59), and the horizontal transfer mechanism (11) comprises a claw (111) which is used for clamping the cover plate and holding and lifting the cover plate to horizontally move to the cover plate return line unit (10).

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