A battery tab, cap welding apparatus and welding process

Abstract

The application discloses a battery tab and cap welding device and a welding process, and particularly relates to the field of welding devices, which comprises a machine table, a workbench is fixedly arranged on the top of the machine table, a loading and unloading disc assembly is installed on the workbench, an upper / lower feeding mechanism, a tab straightening assembly and a welding assembly are respectively arranged on the outer side of the loading and unloading disc assembly, the bottom ends of the workbench, the upper / lower feeding mechanism, the tab straightening assembly and the welding assembly are fixedly connected with the upper table surface of the machine table, and a tab adjusting assembly is further installed on the workbench. The combination of the tab straightening assembly and the tab adjusting assembly replaces the manual or pure intelligent detection mode in the traditional mode, ensures the perpendicularity of the battery, adjusts the body position when the non-perpendicular body position is detected, avoids the influence caused by the repeated workpiece feeding operation due to the rejection of the non-standard body position, and thus realizes the automatic welding with high efficiency, stability and high quality more conveniently, and greatly improves the production efficiency and product consistency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, more particularly, the present application relates to a battery tab, cap welding equipment and welding process. BACKGROUND

[0002] With the rapid development of new energy vehicles, 3C electronic equipment and other fields, the requirements for energy density and safety of lithium ion batteries continue to improve. As the core packaging structure of the battery, the welding quality of the tab and the cap directly affects the battery resistance, sealing and impact resistance, and thus determines the overall reliability and service life of the battery pack.

[0003] The current industry generally adopts three types of processes, laser welding, resistance welding and ultrasonic welding. In the actual production process of lithium battery processing, especially in the tab and cap welding process, because the tab material is mainly aluminum / copper foil (thickness 0.05-0.2mm), and the cap is mostly stainless steel or nickel-plated steel (thickness 0.3-0.8mm), the welding of dissimilar metals is prone to cause interface brittle compounds (such as Cu-Al alloy layer) due to the difference in thermal expansion coefficient, which reduces the joint conductivity. The existing equipment change relies on manual adjustment of clamps and welding paths. For high-curvature workpieces such as 4680 large cylindrical batteries, the positioning accuracy loss is greater than 30%, which affects the consistency of mass production. With the upgrading of production line intelligence, the introduction of intelligent detection elements will place the elements such as dislocation in the welding process to be removed, thereby reducing the yield of the products. However, due to the introduction of intelligent elements, the detection position deviation is removed, which needs to be operated again. Although it can ensure the yield of the product, the feeding of numerous battery materials needs to be performed multiple times, which undoubtedly increases the manufacturing difficulty and reduces the production efficiency. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a battery tab, cap welding equipment and welding process, and the technical problems to be solved by the present application are: how to simply and effectively realize efficient, stable and high-quality automatic welding during tab and cap welding, and ensure production efficiency and yield.

[0005] To achieve the above object, the present application provides the following technical scheme: a battery tab and cap welding device, comprising a machine table, a workbench is fixedly arranged on the top of the machine table, a loading plate assembly is installed on the workbench, an upper / lower feeding mechanism, a tab straightening assembly and a welding assembly are respectively arranged outside the loading plate assembly, the bottom ends of the workbench, the upper / lower feeding mechanism, the tab straightening assembly and the welding assembly are fixedly connected with the upper table surface of the machine table, the tab straightening assembly, the welding assembly and the upper / lower feeding mechanism are arranged in a counterclockwise direction along the center point of the loading plate assembly, and the end stations of the tab straightening assembly, the welding assembly and the upper / lower feeding mechanism are arranged at the edge positions of the loading plate assembly, a tab adjusting assembly is further installed on the workbench, and the tab adjusting assembly is arranged between the tab straightening assembly and the welding assembly, and a cap feeding assembly is further arranged on one side of the machine table; the cap feeding assembly comprises a vibrating feeder, and a conveying assembly is arranged between the discharge port of the vibrating feeder and the loading plate assembly.

[0006] In a preferred embodiment, a controller is further fixedly arranged at the upper table surface of the machine table; the upper / lower feeding mechanism comprises a workpiece feeder and a battery feeder; the workpiece feeder and the battery feeder each comprise a fixed frame I, the bottom end of the fixed frame I is fixedly connected to the upper table surface of the machine table through bolts, an external connecting frame I is arranged at the top of the fixed frame I, an X-axis adjusting part I, a Z-axis adjusting part I and a Y-axis adjusting part I are arranged on the external connecting frame I, wherein the X-axis adjusting part I is arranged as a linear sliding rail, the Z-axis adjusting part I and the Y-axis adjusting part I are arranged as air cylinders; a clamping jaw I is fixedly arranged on the output shaft of the air cylinder corresponding to the Y-axis adjusting part I, and the X-axis adjusting part I comprises two stations of material taking and material placing.

[0007] In a preferred embodiment, the loading plate assembly comprises an upper loading plate and a lower steering plate, the outer diameter of the lower steering plate is greater than that of the upper loading plate, a plurality of sets of clamping air cylinders are uniformly arranged in a circular array at the outer extension of the upper loading plate, and the clamping air cylinders are fixedly installed on the upper panel of the lower steering plate; the upper loading plate and the lower steering plate are arranged on the top of the workbench, and a connecting rod is arranged between the upper loading plate and the workbench for fixation; a driving assembly is fixedly arranged at the bottom of the workbench, the driving assembly comprises a driving motor, a speed reducer and a coupler, and the output shaft of the driving assembly penetrates through the workbench and is fixedly connected with the center point of the lower steering plate.

[0008] In a preferred embodiment, two clamping jaws II are fixedly arranged at the output end of the clamping air cylinder, and a clamping groove is formed in the inner side of the clamping jaw II; the tab adjusting assembly comprises an upper clamping detection part and an adjusting rotating column, the upper clamping detection part and the adjusting rotating column are arranged in a one-to-one manner, and the adjusting rotating column is assembled at the workbench position at the outer edge of the lower steering plate.

[0009] In a preferred implementation form, the upper clamping detection piece comprises a fixed frame II, the bottom end of the fixed frame II is fixed on the upper table surface of the upper loading disc through bolts, the top of the fixed frame II is provided with an adjusting cylinder I, the output shaft of the adjusting cylinder I is provided with a rotating ball at the end, and a pressure sensor is further arranged on the output shaft of the adjusting cylinder I; the bottom of the adjusting rotating column is provided with a driving motor, the driving motor is fixedly arranged on the lower table surface of the workbench, the output shaft of the driving motor penetrates through the workbench and is fixedly connected with the adjusting rotating column, and a limiting convex ring is fixedly arranged on the outer wall of the adjusting rotating column.

[0010] In a preferred implementation form, the tab straightening assembly comprises a fixed frame III, the bottom end of the fixed frame III is fixed on the upper table surface of the machine table through bolts, the top of the fixed frame III is provided with an outer connecting frame II, an X-axis adjusting piece II is arranged between the outer connecting frame II and the fixed frame III, and a Z-axis adjusting piece II and a Y-axis adjusting piece II are further arranged on the outer connecting frame II, wherein the X-axis adjusting piece II and the Z-axis adjusting piece II are linear sliding rails, and the Y-axis adjusting piece II is a cylinder; the cylinder output shaft of the Y-axis adjusting piece II is fixedly provided with a clamping claw III, and the X-axis adjusting piece II comprises two stations of material taking and material placing.

[0011] In a preferred implementation form, the welding assembly comprises a fixed frame IV, the bottom end of the fixed frame IV is fixed on the upper table surface of the machine table through bolts, the top of the fixed frame IV is fixedly provided with an adjusting cylinder II, the output shaft end of the adjusting cylinder II is fixedly provided with a mounting plate, and a welding gun is mounted on the top of the mounting plate; the adjusting cylinder II comprises two stations of welding and idling, and the welding gun is arranged at the end of the material conveying assembly and is positioned at the loading disc assembly.

[0012] In a preferred implementation form, the cap loading assembly further comprises a fixed frame V, the fixed frame V is fixedly connected with the machine table and is arranged in a flat manner, a vibration feeder is arranged at the top end of the fixed frame V, and a conveying motor is further arranged on the material conveying assembly; the material conveying assembly comprises a feeding pipe, a conveying belt is arranged in the feeding pipe, an installation groove is formed at the connection position of the feeding pipe and the conveying belt, and a through groove is further formed at the end of the feeding pipe; the conveying belt comprises a conveying belt and a plurality of transmission shafts, one of the transmission shafts is connected with the output shaft of the conveying motor, and a plurality of supporting rollers can be further arranged on the conveying belt to ensure that the conveying belt arranged on the inner surface of the feeding pipe maintains a flat conveying surface.

[0013] The application also comprises a battery tab and cap welding process, and the specific welding steps are as follows:

[0014] Step S1, battery blank loading: the battery blank with tabs is clamped from the taking position by the workpiece loading machine, and is transported to the loading position on the loading plate assembly. With the rotation of the work station of the loading plate assembly and the repeated operation of the workpiece loading machine, the continuous loading of the battery blank is completed.

[0015] Step S2, tab straightening: the loading plate assembly loaded with the battery blank rotates clockwise to the tab straightening assembly position. The tab straightening assembly clamps and pushes the battery blank to be straightened to a vertical longitudinal position.

[0016] Step S3, tab adjustment: after the straightening process in step S2, the battery blank continues to rotate clockwise with the loading plate assembly, and is transported to the tab adjustment assembly position. With the clamping, detection and adjustment of the adjustment column by the upper clamping detection piece, the battery blank after the tab detection process is ensured to be in a vertical position.

[0017] Step S4, tab cap welding: the loading plate assembly rotates again to transport the adjusted battery blank to the welding assembly position. The cap loading assembly works to transport the cap to the top of the battery blank under the work station. The welding assembly works to weld and fix the cap and the tab, and the battery workpiece finished product is obtained.

[0018] Step S5, finished product unloading: after the welding process is completed, the loading plate assembly rotates to the battery unloading machine position. The battery unloading machine clamps off the work station of the loading plate assembly loaded with the battery workpiece finished product as the taking position, and transports it to the loading position, completing the overall process.

[0019] The technical effects and advantages of the present application are as follows:

[0020] The present application combines the tab straightening assembly and the tab adjustment assembly. The clamping jaw III follows the clamping / loosening of the Y-axis adjustment piece II and the longitudinal position adjustment of the Z-axis adjustment piece II, so that the battery blank clamped on the loading plate assembly is ensured to be in a vertical longitudinal position. The adjustment cylinder I works to extend and rotate the ball to contact the tab position of the battery, and the pressure sensor detects whether a pressure value is generated. The mechanical and intelligent components are used to detect the battery perpendicularity, replacing the traditional manual or pure intelligent detection method. On the one hand, the battery perpendicularity is ensured, and on the other hand, the adjustment can be made when the non-vertical position is detected, avoiding the rejection of the battery due to the non-standard position, which causes the repeated loading operation of multiple workpieces, thereby realizing efficient, stable and high-quality automatic welding more conveniently, and greatly improving the production efficiency and product consistency.

[0021] The cap gradually loosens in the vibrating feeder and flows along the predetermined path, so as to enter the feeding pipe of the next body position, and the vibration generated by the vibrating feeder can also shake the sheet-shaped cap, and the cap in the feeding pipe is conveyed forward by the transportation of the conveying belt driven by the carrier motor, and the single cap is sent to the corresponding carrier disc assembly position of the welding assembly position through the discharge port at the end of the feeding pipe, and the welding assembly works, and the carrier disc assembly moves to the working position again, and the welded cap and the tab workpiece are sent to the next position, so that the next cap falls from the outlet at the end of the feeding pipe, so that the continuous single cap supply is realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the overall structure of the present application.

[0023] Figure 2 It is a schematic view of the overall structure of the present application from a second perspective.

[0024] Figure 3 It is a schematic view of the carrier disc assembly structure of the present application.

[0025] Figure 4 It is a schematic view of the carrier disc assembly and the tab adjusting assembly assembly structure of the present application.

[0026] Figure 5 It is a schematic view of the carrier disc assembly and the tab adjusting assembly assembly structure of the present application. Figure 4 It is an enlarged view of the A part in the schematic view.

[0027] Figure 6 It is a schematic view of the feeding / discharging mechanism structure of the present application.

[0028] Figure 7 It is a schematic view of the tab straightening assembly structure of the present application.

[0029] Figure 8 It is a schematic view of the upper clamping detection piece structure of the present application.

[0030] Figure 9 It is a schematic view of the welding assembly structure of the present application.

[0031] Figure 10 It is an exploded structural schematic view of the material conveying assembly of the present application.

[0032] The reference signs are: 1 machine, 2 workbench, 3 carrier disc assembly, 4 controller, 5 feeding / discharging mechanism, 6 tab straightening assembly, 7 tab adjusting assembly, 8 welding assembly, 9 cap feeding assembly;

[0033] 31 upper carrier disc, 32 lower turning disc, 33 clamping cylinder, 34 driving assembly, 35 clamping claw II, 36 clamping groove;

[0034] 51 workpiece loading machine, 52 battery unloading machine;

[0035] 71 upper clamping detection piece, 72 adjusting rotating column, 73 driving motor, 74 limiting convex ring;

[0036] 711 fixed frame II, 712 adjusting cylinder I, 713 pressure sensor, 714 rotating ball;

[0037] 81 fixed frame IV, 82 adjusting cylinder II, 83 mounting plate, 84 welding gun;

[0038] 91 fixed frame V, 92 vibrating loading machine, 93 material conveying assembly, 94 carrying motor;

[0039] 931 feeding pipeline, 932 mounting groove, 933 through groove, 934 conveying belt;

[0040] 01 fixed frame I, 02 outer connecting frame I, 03 X-axis adjusting piece I, 04 Z-axis adjusting piece I, 05 Y-axis adjusting piece I, 06 clamping claw I;

[0041] 001 fixed frame III, 002 outer connecting frame II, 003 X-axis adjusting piece II, 004 Z-axis adjusting piece II, 005 Y-axis adjusting piece II, 006 clamping claw III. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1:

[0043] The present application provides a kind of welding device, including Figures 1-2The battery tab, cap welding equipment shown, including machine table 1, the top of machine table 1 is fixedly provided with working frame 2, working frame 2 is installed with loading plate assembly 3, the outer side of loading plate assembly 3 is respectively provided with feeding mechanism 5, tab straightening assembly 6 and welding assembly 8, the bottom of working frame 2, feeding mechanism 5, tab straightening assembly 6 and welding assembly 8 is fixedly connected with the upper table surface of machine table 1, tab straightening assembly 6, welding assembly 8 and feeding mechanism 5 are arranged in counterclockwise direction along the center point of loading plate assembly 3, and one end station of tab straightening assembly 6, welding assembly 8 and feeding mechanism 5 is arranged at the edge position of loading plate assembly 3, working frame 2 is further installed with tab adjusting assembly 7, and tab adjusting assembly 7 is arranged between tab straightening assembly 6 and welding assembly 8, one side of machine table 1 is further provided with cap feeding assembly 9, the upper table surface of machine table 1 is further fixedly provided with controller 4, controller 4 adopts the control terminal mode of industrial computer+PLC, as the processing control host: the touch screen man-machine interface of controller 4, coordinates the action and setting parameter of each station, accurately controls each step in the welding process, including welding time, welding temperature, conveyor belt speed, etc., realizes the automatic process of welding production line;

[0044] Please refer to the attached Figure 2 Cap feeding assembly 9 further includes fixed frame V 91 and vibration feeder 92, fixed frame V 91 is fixedly connected with machine table 1 and is arranged in height flush, vibration feeder 92 is arranged at the top end of fixed frame V 91, conveying assembly 93 is arranged between the discharge port of vibration feeder 92 and loading plate assembly 3, conveying assembly 93 is further provided with conveying motor 94;

[0045] Please refer to the attached Figure 10 Conveying assembly 93 includes feeding pipe 931, feeding pipe 931 is provided with conveying belt 934 inside, installation slot 932 is formed at the connection position of feeding pipe 931 and conveying belt 934, and through slot 933 is further formed at the end of feeding pipe 931; Conveying belt 934 includes conveying belt and a plurality of transmission shafts, one of the transmission shafts is connected with the output shaft of conveying motor 94, and a plurality of supporting rollers can be further added on the conveying belt to ensure that the conveying belt keeps flush carrying surface when placed in feeding pipe 931;

[0046] Specifically, the plurality of to-be-used caps are stored in the vibration feeder 92, a centrifugal force is generated by rotating an eccentric wheel driven by a motor of the conventional vibration feeder 92, thereby generating vibration, and the caps are gradually loosened and flow along a predetermined path in the vibration feeder 92, thereby entering the feeding pipe 931 of the next body position, and the vibration generated by the vibration feeder 92 can also shake the sheet caps to avoid adhesion of the caps and affect the single-piece conveying effect, and the caps in the feeding pipe 931 are conveyed forward with the conveying of the conveying belt 934 driven by the conveying motor 94, and the single-piece caps are sent to the body position of the loading disc assembly 3 corresponding to the welding assembly 8 through the discharge port at the end of the feeding pipe 931, so that the caps fall on the top of the battery tab clamped by the body position of the loading disc assembly 3, and the welding assembly 8 works to weld and fix the caps and the tabs under the body position, and the welding completed caps and tab workpieces are sent to the next work position with the rotation of the loading disc assembly 3 (the through slot 933 is not arranged to block the caps in the feeding pipe 931), so that the next cap falls from the end of the feeding pipe 931, thereby realizing continuous single-piece cap supply.

[0047] The application also includes a battery tab and cap welding process, and the specific welding steps are as follows:

[0048] Step S1, battery embryo feeding: the battery embryo with tabs is clamped from the feeding position by the workpiece feeder 51 and is conveyed to the feeding position on the loading disc assembly 3, and the continuous battery embryo loading is completed through the rotation of the work position of the loading disc assembly 3 and the repeated operation of the workpiece feeder 51.

[0049] Step S2, tab straightening: when the loading disc assembly 3 loaded with the battery embryo rotates clockwise to the body position of the tab straightening assembly 6, the battery embryo is straightened to the vertical longitudinal body position by the clamping and driving of the tab straightening assembly 6.

[0050] Step S3, tab adjustment: the battery embryo after the straightening process in step S2 is conveyed to the body position of the tab adjustment assembly 7 through the continuous clockwise rotation of the loading disc assembly 3, and the battery embryo after the tab process is ensured to be in the vertical body position through the clamping, detection and adjustment of the body position of the adjustment rotating column 72 by the clamping and detection of the upper clamping detection member 71.

[0051] Step S4, tab and cap welding: the loading disc assembly 3 is rotated again to convey the adjusted battery embryo to the body position of the welding assembly 8, and the cap is conveyed to the top of the battery embryo under the body position by the work of the cap feeding assembly 9, and the welding assembly 8 works to weld and fix the cap and the tab, thereby obtaining the battery workpiece finished product.

[0052] Step S5, finished product discharging: after the welding process is completed, the loading plate assembly 3 is rotated to the position of the battery discharging machine 52, the battery discharging machine 52 is used to clamp the loading plate assembly 3 at the work station where the battery workpiece finished product is loaded as a material taking position, and the battery discharging machine 52 is used to transport the battery workpiece finished product to a discharging position, thereby completing the whole process. Embodiment 2

[0053] Based on the battery tab and cap welding equipment proposed in Embodiment 1, the application provides further technical solutions for the feeding and discharging mechanism 5 and the tab straightening assembly 6.

[0054] Referring to Figure 2 and Figure 6 , the feeding and discharging mechanism 5 provided by the application comprises a workpiece feeding machine 51 and a battery discharging machine 52; the workpiece feeding machine 51 and the battery discharging machine 52 each comprise a fixed frame I 101, the bottom end of the fixed frame I 101 is fixed to the top surface of the machine table 1 by bolts, the top of the fixed frame I 101 is provided with an external connecting frame I 102, the external connecting frame I 102 is provided with an X-axis adjusting part I 103, a Z-axis adjusting part I 104 and a Y-axis adjusting part I 105, wherein the X-axis adjusting part I 103 is provided as a linear slide rail, the Z-axis adjusting part I 104 and the Y-axis adjusting part I 105 are provided as air cylinders; the output shaft of the corresponding air cylinder of the Y-axis adjusting part I 105 is fixedly provided with a clamping jaw I 106, and the X-axis adjusting part I 103 comprises two work stations of material taking and discharging.

[0055] Referring to Figure 7 , the tab straightening assembly 6 comprises a fixed frame III 001, the bottom end of the fixed frame III 001 is fixed to the top surface of the machine table 1 by bolts, the top of the fixed frame III 001 is provided with an external connecting frame II 002, the external connecting frame II 002 and the fixed frame III 001 are provided with an X-axis adjusting part II 003, the external connecting frame II 002 is further provided with a Z-axis adjusting part II 004 and a Y-axis adjusting part II 005, wherein the X-axis adjusting part II 003 and the Z-axis adjusting part II 004 are provided as linear slide rails, and the Y-axis adjusting part II 005 is provided as an air cylinder; the output shaft of the corresponding air cylinder of the Y-axis adjusting part II 005 is fixedly provided with a clamping jaw III 006, and the X-axis adjusting part II 003 comprises two work stations of material taking and discharging.

[0056] Specifically, the double-station clamping mode corresponding to the workpiece feeding machine 51 and the battery discharging machine 52, the X-Y-Z axis system moving mode, ensures that the clamping jaw I 106 positioned by the workpiece feeding machine 51 accurately transports the battery blank to be welded to the corresponding clamping position of the loading plate assembly 3, and the clamping jaw I 006 positioned by the battery discharging machine 52 accurately takes the battery workpiece finished product from the position of the loading plate assembly 3.

[0057] And the design of the tab straightening assembly 6, the clamping jaw Ⅲ 006 follows the clamping / loosening of the Y-axis adjusting part Ⅱ 005, and the longitudinal body position adjusting of the Z-axis adjusting part Ⅱ 004, so that the battery embryo clamped on the loading disc assembly 3 ensures the longitudinal vertical body position; Embodiment 3:

[0058] Based on the battery tab and cap welding equipment proposed in embodiment 1, the present application provides a further technical solution of the loading disc assembly 3.

[0059] Please refer to Figures 3-5 The loading disc assembly 3 provided by the present application includes an upper loading disc 31 and a lower turning disc 32, the outer diameter of the lower turning disc 32 is larger than that of the upper loading disc 31, and a plurality of clamping cylinders 33 are uniformly arranged in a circular array at the outer extension of the upper loading disc 31, which are fixedly installed on the upper surface of the lower turning disc 32; the upper loading disc 31 and the lower turning disc 32 are both arranged on the top of the workbench 2, and a connecting rod is arranged between the upper loading disc 31 and the workbench 2 for fixation; a driving assembly 34 is fixedly arranged at the bottom of the workbench 2, which includes a driving motor, a speed reducer and a coupler, wherein the output shaft of the driving assembly 34 penetrates the workbench 2 and is fixedly connected with the center point of the lower turning disc 32; two clamping jaws Ⅱ 335 are fixedly arranged at the output end of the clamping cylinder 33, and a clamping groove 36 is formed in the inner side of the clamping jaw Ⅱ 335;

[0060] Specifically, the clamping cylinder 33 corresponding to the workpiece loading machine 51 and the welding assembly 8 is in a contracted state, i.e. the clamping jaw Ⅱ 335 corresponding to the clamping cylinder 33 is in a clamped state, which ensures the clamping state of the battery, thereby maintaining the stability of the body position of the battery in the running and welding state, and avoiding the shift of the body position of the battery caused by the rotation of the lower turning disc 32;

[0061] The driving motor corresponding to the driving assembly 34 works, and the speed reducer reduces the speed while increasing the output torque: the motor speed reducer can output the speed reduction generated by the motor and the overload protection of the coupler, so as to realize that the rotation angle of the work station is equal to the angle offset angle of the adjacent clamping cylinder 33, realize the precise positioning of the rotating work station of the loading disc assembly 3, and the body position limitation of the upper loading disc 31 to the lower turning disc 32 avoids the angle inclination of the lower turning disc 32 affecting the working accuracy. Embodiment 4:

[0062] Based on the battery tab and cap welding equipment proposed in embodiment 1, the present application provides a further technical solution of the tab adjusting assembly 7 and the welding assembly 8.

[0063] Please refer to Figure 4 and Figure 7The lug adjusting assembly 7 comprises an upper clamping detection piece 71 and an adjusting rotating column 72. The upper clamping detection piece 71 is arranged in position with the adjusting rotating column 72. The adjusting rotating column 72 is assembled at the position of the workbench 2 at the outer edge of the lower rotating disc 32. The upper clamping detection piece 71 comprises a fixed frame II 711. The bottom end of the fixed frame II 711 is fixed on the upper table top of the upper loading disc 31 through bolts. The top of the fixed frame II 711 is provided with an adjusting cylinder I 712. The end of the output shaft of the adjusting cylinder I 712 is provided with a rotating ball 714. The output shaft of the adjusting cylinder I 712 is also provided with a pressure sensor 713. The bottom of the adjusting rotating column 72 is provided with a driving motor 73. The driving motor 73 is fixedly assembled on the lower table top of the workbench 2. The output shaft of the driving motor 73 penetrates the workbench 2 and is fixedly connected with the adjusting rotating column 72. The outer wall of the adjusting rotating column 72 is fixedly provided with a limiting protruding ring 74. The limiting protruding ring 74 is made of hard wear-resistant rubber material.

[0064] Please refer to Figure 9 The welding assembly 8 comprises a fixed frame IV 81. The bottom end of the fixed frame IV 81 is fixed on the upper table top of the machine table 1 through bolts. The top of the fixed frame IV 81 is fixedly provided with an adjusting cylinder II 82. The end of the output shaft of the adjusting cylinder II 82 is fixedly provided with a mounting plate 83. The top of the mounting plate 83 is mounted with a welding gun 84. The adjusting cylinder II 82 comprises two working positions of welding and idling. The end point of the welding gun 84 acts on the position corresponding to the end of the material conveying assembly 93 and the loading disc assembly 3.

[0065] Specifically, after the battery is straightened, the battery enters the position of the lug adjusting assembly 7. The clamping cylinders 33 corresponding to the lug straightening assembly 6, the lug adjusting assembly 7 and the battery unloading machine 52 are in an extended state, that is, the clamping claws II 35 corresponding to the clamping cylinders 33 are in an extended state, so as to ensure that the battery is released from the clamping state. The adjusting cylinder I 712 works to extend and abut the lug of the battery through the rotating ball 714. Whether a pressure value is detected by the pressure sensor 713.

[0066] If a pressure value is generated, it proves that the battery is in a vertical standard body position. The clamping cylinder 33 at this position is retracted to keep the clamping state and enters the next working procedure.

[0067] If no pressure value is generated, it proves that the output end of the adjusting cylinder I 712 does not contact the lug. The driving motor 73 drives the adjusting rotating column 72 to rotate. The limiting protruding rings 74 arranged at the positions corresponding to the two sides of the clamping claw II 35 adjust the body position of the battery to restore the vertical body position. The battery is moved to the next upper clamping detection piece 71. If no pressure value is detected, the battery is taken away from the loading disc assembly 3 by the mechanical claw. If a pressure value is detected, the battery enters the welding working position.

[0068] After the battery is carried to the welding assembly 8 by the loading disc assembly 3 after the detection of the position of the battery, a single cap is sent to the welding position by the cap loading assembly 9, the welding gun 84 is driven to extend by the adjusting cylinder II 82 to weld the cap and the tab.

[0069] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0070] Secondly: the present application discloses the drawings in the embodiment, only relates to the structure involved in the present application, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0071] Finally: the above only for the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A battery tab and cap welding equipment, comprising a machine base (1), characterized in that: The machine base (1) is fixedly provided with a work frame (2) on top. A loading tray assembly (3) is installed on the work frame (2). The loading tray assembly (3) is provided with an loading / unloading mechanism (5), an electrode straightening assembly (6), and a welding assembly (8) on the outside. The bottom ends of the work frame (2), the loading / unloading mechanism (5), the electrode straightening assembly (6), and the welding assembly (8) are all fixedly connected to the upper surface of the machine base (1). The electrode straightening assembly (6) and the welding assembly (8) The loading / unloading mechanism (5) is arranged counterclockwise along the center point of the loading tray assembly (3), and the electrode straightening assembly (6), welding assembly (8) and one end of the loading / unloading mechanism (5) are all located at the edge of the loading tray assembly (3). The work frame (2) is also equipped with an electrode adjustment assembly (7), and the electrode adjustment assembly (7) is located between the electrode straightening assembly (6) and the welding assembly (8). The machine base (1) is also equipped with a cap loading assembly (9) on one side. The cap feeding assembly (9) includes a vibrating feeder (92), and a conveying assembly (93) is provided between the discharge port of the vibrating feeder (92) and the loading tray assembly (3). The electrode adjustment assembly (7) includes an upper clamping detection element (71) and an adjusting column (72), wherein the upper clamping detection element (71) and the adjusting column (72) are aligned and the adjusting column (72) is mounted on the work frame (2) at the outer edge of the lower steering wheel (32); The upper clamping detection component (71) includes a fixing frame II (711). The bottom end of the fixing frame II (711) is fixed to the upper platform of the upper loading plate (31) by bolts. The top of the fixing frame II (711) is provided with an adjusting cylinder I (712). The output shaft of the adjusting cylinder I (712) is provided with a rotating ball (714), and a pressure sensor (713) is also provided on the output shaft of the adjusting cylinder I (712). The bottom of the adjusting column (72) is provided with a drive motor (73), which is fixedly mounted on the lower table of the work frame (2). The output shaft of the drive motor (73) passes through the work frame (2) and is fixedly connected to the adjusting column (72). A limiting ring (74) is fixedly provided on the outer wall of the adjusting column (72), which is made of hard wear-resistant rubber material.

2. The battery tab and cap welding equipment according to claim 1, characterized in that: A controller (4) is also fixedly installed on the upper surface of the machine (1); The loading / unloading mechanism (5) includes a workpiece loading machine (51) and a battery unloading machine (52). Both the workpiece loading machine (51) and the battery unloading machine (52) include a fixed frame I (01). The bottom end of the fixed frame I (01) is fixed to the upper surface of the machine base (1) by bolts. The top of the fixed frame I (01) is provided with an external connecting frame I (02). (02) is provided with an X-axis adjusting component I (03), a Z-axis adjusting component I (04) and a Y-axis adjusting component I (05), wherein the X-axis adjusting component I (03) is a linear slide rail, and the Z-axis adjusting component I (04) and the Y-axis adjusting component I (05) are cylinders; The cylinder output shaft corresponding to the Y-axis adjusting component I (05) is fixedly provided with clamping claw I (06), and the X-axis adjusting component I (03) includes two stations: material picking and material unloading.

3. The battery tab and cap welding equipment according to claim 2, characterized in that: The loading plate assembly (3) includes an upper loading plate (31) and a lower steering plate (32). The outer diameter of the lower steering plate (32) is larger than that of the upper loading plate (31). Multiple sets of clamping cylinders (33) are evenly arranged in a circular array on the outer extension of the upper loading plate (31). The clamping cylinders are fixedly installed on the upper panel of the lower steering plate (32). The upper loading plate (31) and the lower steering wheel (32) are both located on the top of the work frame (2), and a connecting rod is provided between the upper loading plate (31) and the work frame (2) for fixing; The bottom of the work frame (2) is fixedly provided with a drive assembly (34), which includes a drive motor, a reducer and a coupler. The output shaft of the drive assembly (34) passes through the work frame (2) and is fixedly connected to the center point of the lower steering wheel (32).

4. The battery tab and cap welding equipment according to claim 3, characterized in that: Two clamping claws II (35) are fixedly provided at the output end of the clamping cylinder (33), and a clamping groove (36) is provided on the inner side of the clamping claws II (35).

5. The battery tab and cap welding equipment according to claim 1, characterized in that: The electrode straightening assembly (6) includes a fixed frame Ⅲ (001), the bottom end of which is fixed to the upper surface of the machine base (1) by bolts. The top of the fixed frame Ⅲ (001) is provided with an outer connecting frame Ⅱ (002). An X-axis adjusting component Ⅱ (003) is provided between the outer connecting frame Ⅱ (002) and the fixed frame Ⅲ (001). The outer connecting frame Ⅱ (002) is also provided with a Z-axis adjusting component Ⅱ (004) and a Y-axis adjusting component Ⅱ (005). The X-axis adjusting component Ⅱ (003) and the Z-axis adjusting component Ⅱ (004) are configured as linear slide rails, and the Y-axis adjusting component Ⅱ (005) is configured as a cylinder. The cylinder output shaft corresponding to the Y-axis adjusting component II (005) is fixedly provided with a clamping claw III (006), and the X-axis adjusting component II (003) includes two stations: material picking and material unloading.

6. The battery tab and cap welding equipment according to claim 1, characterized in that: The welding assembly (8) includes a fixed frame IV (81), the bottom end of which is fixed to the upper surface of the machine base (1) by bolts. An adjusting cylinder II (82) is fixedly installed on the top of the fixed frame IV (81). An installation plate (83) is fixedly installed on the output shaft end of the adjusting cylinder II (82). A welding gun (84) is installed on the top of the installation plate (83). The adjusting cylinder II (82) includes two positions: welding and idle. In the welding position of the adjusting cylinder II (82), the end point of the welding gun (84) acts on the alignment point between the end of the material conveying assembly (93) and the loading tray assembly (3).

7. The battery tab and cap welding equipment according to claim 1, characterized in that: The cap feeding assembly (9) also includes a fixed frame V (91), which is fixedly connected to the machine base (1) and is set at the same height. The vibrating feeder (92) is set at the top of the fixed frame V (91), and the material conveying assembly (93) is also equipped with a conveying motor (94). The material conveying component (93) includes a feeding pipe (931), a conveyor belt (934) is provided inside the feeding pipe (931), an installation groove (932) is provided at the connection between the feeding pipe (931) and the conveyor belt (934), and a through groove (933) is also provided at the end of the feeding pipe (931). The conveyor belt (934) includes a carrier belt and multiple drive shafts, one of which is connected to the output shaft of a carrier motor (94).

8. A battery tab and cap welding process, applied to the battery tab and cap welding equipment described in claim 4, characterized in that: The specific welding steps are as follows: Step S1, Battery blank loading: The workpiece loading machine (51) picks up the battery blank with tabs from the clamping area of ​​the picking position and transports it to the unloading position on the loading tray assembly (3). As the workpiece loading tray assembly (3) rotates and works in conjunction with the repeated operation of the workpiece loading machine (51), continuous battery blank loading is completed. Step S2, tab straightening: When the carrier tray assembly (3) loaded with battery blanks rotates clockwise to the position of the tab straightening assembly (6), the battery blanks are straightened to the vertical longitudinal position by the clamping and pushing of the tab straightening assembly (6). Step S3, tab alignment: As the loading tray assembly (3) continues to rotate clockwise after the straightening process in step S2, the battery blank after the straightening process is transported to the position of the tab alignment assembly (7). With the clamping and detection of the upper clamping detection piece (71) and the position adjustment of the adjusting column (72), the battery blank after the tab process is ensured to be in a vertical position. Step S4, electrode cover welding: The loading tray assembly (3) rotates again to transport the adjusted battery blank to the welding assembly (8) position, and the cover loading assembly (9) works to transport the cover to the top of the battery blank at the lowering position of the cover loading assembly (9). The welding assembly (8) works to weld and fix the cover and electrode to obtain the finished battery workpiece. Step S5, Finished Product Unloading: After the welding process is completed, the loading tray assembly (3) is rotated to the position of the battery unloading machine (52). The battery unloading machine (52) clamps the loading tray assembly (3) containing the finished battery workpiece as the material pick-up position and transports it to the unloading position to complete the overall process.

Images