Automatic welding production line for upper shell of battery box

Abstract

The utility model discloses an automatic welding production line for an upper shell of a battery box. The first feeding station is located on the rear side and used for feeding a bottom plate, the second feeding station is located on the right side and used for feeding an upper cover, the double-station rotating tool is located on the left side and used for positioning the upper cover and the bottom plate, and the welding manipulator is located on one side of the double-station rotating tool. The conveying device is positioned on the front side and is used for conveying the welded upper shell of the battery box; the carrying manipulator is arranged in the middle position; the double-station rotating tool comprises two clamping and positioning modules, a rotating workbench used for fixedly supporting the two clamping and positioning modules and a first driving piece used for driving the two clamping and positioning modules to conduct position switching. The full-line automatic production layout is compact, the occupied space is small, the automation degree is high, the welding efficiency is high, the good welding quality can be guaranteed in the welding process, and the safety of operators can also be guaranteed.

Description

[Technical field]

[0001] The utility model belongs to the technical field of battery box production, in particular to an automatic welding production line for a battery box upper shell. [Background technology]

[0002] To ensure the strength of the battery case, the upper housing is currently stamped and formed in one piece using thicker materials. However, this thicker material increases the weight of the battery case, significantly reducing the range of new energy vehicles. Furthermore, the assembly holes of the housing require CNC machining, which involves manual intervention, resulting in low production efficiency and poor quality. Therefore, the selection of raw materials, process design, production stability, and production continuity for the upper housing are all crucial.

[0003] In order to solve the above problems, a battery box upper shell 900 (such as Figure 1 As shown), it is welded by the upper cover 700 and the bottom plate 800, which ensures the strength of the upper shell while achieving the lightweight of the battery box. Therefore, it can ensure the safety of new energy vehicles and have sufficient driving range. In the existing technology, the layout of the automated welding production line is basically linear. For example, China Patent Publication No. CN113275749A discloses an automated welding production line and production method for automobile battery boxes. The production line includes a material transport line, a first welding slide rail, a second welding slide rail, a gripper placement platform, a loading robot and a welding robot. The first welding slide rail and the second welding slide rail are both slidably provided with a welding fixture platform for clamping the battery box. The first welding slide rail and the second welding slide rail operate alternately. The loading robot and the welding robot perform loading and welding at the same time, and the double-station loading and welding is carried out. Although this solution can realize simultaneous loading and welding, two welding slide rails are provided for welding and loading alternately, and the linear layout method occupies a large amount of space.

[0004] Therefore, it is necessary to provide an automated welding production line for the upper shell of a battery box to solve the above technical problems. [Utility Model Content]

[0005] The main purpose of the utility model is to provide an automated welding production line for the upper shell of a battery box, which has a compact layout and occupies a small space, a high degree of automation and high welding efficiency. During the welding process, it can not only ensure good welding quality but also ensure the safety of operators.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: an automated welding production line for battery box upper shells, which includes a first feeding station located on the rear side for feeding the bottom plate, a second feeding station located on the right side for feeding the upper cover, a double-station rotary tooling located on the left side for positioning the upper cover and the bottom plate, a welding manipulator located on one side of the double-station rotary tooling, a conveying device located on the front side for conveying the welded battery box upper shell, and a transporting manipulator arranged in the middle position for transporting the upper cover, the bottom plate and the battery box upper shell; the double-station rotary tooling includes two groups of clamping and positioning modules for clamping and positioning the upper cover and the bottom plate, a rotating workbench for fixing and supporting the two groups of the clamping and positioning modules, and a first driving member for driving the two groups of the clamping and positioning modules to switch positions between the welding loading and unloading stations and the welding stations.

[0007] Furthermore, the movable end of the welding manipulator includes a welding gun head for welding, a welding gun base for placing the welding gun head, a conveying pipe fixed on the welding gun base and conveying the welding wire to the welding end of the welding gun head, and an air blow pipe arranged on the welding gun base and located on one side of the welding gun head for blowing air to clean welding slag.

[0008] Furthermore, the conveying device includes a conveying line and a positioning mechanism installed above the conveying line and used to position the upper shell of the battery box; the positioning mechanism includes a positioning seat, a plurality of first positioning pins arranged on the positioning seat, and a plurality of first support rods arranged on the positioning seat.

[0009] Furthermore, the handling robot includes a first handling robot that handles the base plate on the first feeding station to the double-station rotary tooling, a second handling robot that handles the upper cover on the second feeding station to the double-station rotary tooling, and a third handling robot that handles the upper shell of the battery box welded on the double-station rotary tooling to the conveying device.

[0010] Furthermore, the clamping and positioning module includes a welding support platform for positioning the upper cover and the base plate to be welded, a positioning support mechanism arranged inside the welding support platform and for positioning and supporting the upper cover, and several clamping mechanisms arranged on the periphery of the base plate and used to support and clamp the base plate.

[0011] Furthermore, the welding support platform is provided with a positioning boss that is configured to follow the weld path, and a plurality of the positioning support mechanisms are distributed inside the positioning boss.

[0012] Further, the positioning and supporting mechanism includes a first positioning component for positioning the upper cover, a plurality of second support rods for supporting the top end of the upper cover, and a plurality of support blocks for supporting the inner side edges of the upper cover; the first positioning component includes a first mounting bracket disposed on the welding support table and a second positioning pin disposed at the upper end of the first mounting bracket.

[0013] Further, the clamping mechanism includes a support component for supporting the lower edge of the bottom plate and a pressing component for pressing the upper surface of the bottom plate; the support component includes a second mounting bracket and a third support rod mounted on the second mounting bracket and used for supporting the lower edge of the bottom plate; the pressing component includes a second driving member disposed on the second mounting bracket, a rotating rod driven by the second driving member to rotate, and a first pressing rod fixed at the end of the rotating rod and used for pressing the upper edge of the bottom plate.

[0014] Further, the movable ends of the first handling manipulator and the third handling manipulator have the same structure and both include a first gripper frame, a plurality of adsorption components disposed on the first gripper frame and used for adsorbing the upper surface of the bottom plate, a plurality of second positioning components disposed on the first gripper frame and used for positioning the upper cover, and a plurality of first clamping components disposed on the first gripper frame and located at the outer peripheral edge of the bottom plate for clamping the bottom plate.

[0015] Further, the movable end of the second handling manipulator includes a second gripper frame, a plurality of third positioning components disposed on the second gripper frame and used for positioning the upper cover, a plurality of second clamping components disposed on the second gripper frame and used for clamping the upper cover, and a flattening component disposed in imitation of the outer periphery of the upper cover and used for pressing the lip at the bottom edge of the upper cover.

[0016] Compared with the prior art, the beneficial effects of the automatic welding production line for the upper shell of the battery box of the present utility model are as follows:

[0017] (1) The layout of the two feeding stations, the welding tooling and the conveying device forms a surrounding enclosure in the front, back, left and right directions. The layout is compact, occupies a small space, and the handling manipulator is located in the middle of the surrounding enclosure, which is convenient for handling between the feeding station, the welding station and the conveying device. The degree of automation is high and the welding efficiency is high;

[0018] (2) The clamping and positioning modules for clamping and positioning the upper cover and the bottom plate are provided at both ends of the double-station rotating tooling. It can realize simultaneous feeding and welding, continuous operation, and high welding efficiency; moreover, the welding station is arranged in the welding chamber, realizing welding protection and ensuring the safety of the operators;

[0019] (3) Laser welding is adopted, and during the high-speed welding process, the weld seam is positioned and tracked to ensure no deviation in welding, no deformation of the workpiece during welding, and no air leakage; a blowpipe for blowing air to clean the welding slag is provided on one side of the welding torch gun head. The blowpipe blows air at the welding position of the workpiece before and after welding to facilitate the cleaning of the welding slag generated during welding, ensuring the welding quality of the workpiece.

[0020] (4) A flattening assembly is provided on the second handling robot. The flattening assembly includes a number of vertical pressing blocks. The number of vertical pressing blocks are sequentially spliced to form an annular structure surrounding the outer periphery of the upper cover. The lower end of the vertical pressing block abuts against the lip on the bottom edge of the upper cover. After the second handling robot transports the upper cover in place and moves downward, the number of vertical pressing blocks simultaneously press the lip on the bottom edge of the upper cover to keep the lip on the bottom edge of the upper cover flat, providing guarantee for the subsequent good welding of the upper cover and the bottom plate.

[0021] Therefore, the automatic welding production line layout of the battery box upper shell provided by this solution is compact and occupies a small space, with a high degree of automation and high welding efficiency. During the welding process, it can not only ensure good welding quality but also ensure the safety of the operators.

Description of the Drawings

[0022] Figure 1 It is a three-dimensional structure schematic diagram of the battery box upper shell of the embodiment of the present utility model;

[0023] Figure 2 It is a top view structure schematic diagram of the automatic welding production line of the battery box upper shell of the embodiment of the present utility model;

[0024] Figure 3 It is a three-dimensional structure schematic diagram of the double-station rotating tooling of the embodiment of the present utility model;

[0025] Figure 4 It is a top view structure schematic diagram of the clamping and positioning module of the embodiment of the present utility model;

[0026] Figure 5 It is a three-dimensional structure schematic diagram of the clamping and positioning module of the embodiment of the present utility model;

[0027] Figure 6 It is a three-dimensional structure schematic diagram of the clamping mechanism of the clamping and positioning module of the embodiment of the present utility model;

[0028] Figure 7 It is a three-dimensional structure schematic diagram of the conveying device of the embodiment of the present utility model;

[0029] Figure 8 It is a three-dimensional structure schematic diagram of the first handling robot and the third handling robot of the embodiment of the present utility model;

[0030] Figure 9Schematic three-dimensional structure diagram of the second handling manipulator according to an embodiment of the present utility model;

[0031] Figure 10 Schematic three-dimensional structure diagram of the second clamping assembly of the second handling manipulator according to an embodiment of the present utility model;

[0032] The numbers in the figure represent:

[0033] 100 - Automatic welding production line for the upper shell of the battery box, 700 - Upper cover, 800 - Bottom plate, 900 - Upper shell of the battery box;

[0034] 1 - First feeding station;

[0035] 2 - Second feeding station;

[0036] 3 - Double-station rotating tooling, 31 - Clamping and positioning module, 311 - Welding support table, 312 - Positioning support mechanism, 3121 - First positioning component, 31211 - First mounting bracket, 31212 - Second positioning pin, 3122 - Second support rod, 3123 - Support block, 313 - Clamping mechanism, 3131 - Support component, 31311 - Second mounting bracket, 31312 - Third support rod, 3132 - Pressing component, 31321 - Second driving part, 31322 - Rotating rod, 31323 - First pressing rod, 31324 - Pressing plate, 32 - Rotating workbench, 33 - First driving part, 34 - Welding chamber;

[0037] 4 - Welding manipulator; 5 - Conveying device, 51 - Conveyor line, 52 - Positioning mechanism, 521 - Positioning seat, 522 - First positioning pin, 523 - First support rod;

[0038] 6 - Handling manipulator, 61 - First handling manipulator, 611 - First gripper frame, 612 - Adsorption component, 6121 - First mounting seat, 6122 - Suction cup, 613 - Second positioning component, 6131 - Third driving part, 6132 - Third positioning pin, 614 - First clamping component, 6141 - Second pressing rod, 6142 - Fourth driving part, 6143 - Third pressing rod, 6144 - First rotating block, 62 - Second handling manipulator, 621 - Second gripper frame, 622 - Third positioning component, 6221 - Fifth driving part, 6222 - Fourth positioning pin, 623 - Second clamping component, 6231 - Elastic rod, 6232 - Sixth driving part, 6233 - Pressing block, 6234 - Second rotating block, 624 - Flattening component, 6241 - Vertical pressing block, 63 - Third handling manipulator.

Detailed implementation manners

[0039] Please refer to Figures 1 - 10, this embodiment is an automated welding production line for the upper shell of a battery box, which is used to weld the upper cover 700 and the bottom plate 800 to form the upper shell 900 of the battery box. The automated welding production line 100 of the upper shell of the battery box includes a first feeding station 1 located at the rear for feeding the bottom plate 800, a second feeding station 2 located on the right for feeding the upper cover 700, a double-station rotating tooling 3 located on the left for positioning the upper cover 700 and the bottom plate 800, a welding manipulator 4 located on one side of the double-station rotating tooling 3, a conveying device 5 located at the front for conveying the welded upper shell 900 of the battery box, and a handling manipulator 6 arranged in the middle position for handling the upper cover 700, the bottom plate 800 and the upper shell 900 of the battery box.

[0040] The handling manipulator 6 includes a first handling manipulator 61 for handling the bottom plate 800 on the first feeding station 1 to the double-station rotating tooling 3, a second handling manipulator 62 for handling the upper cover 700 on the second feeding station 2 to the double-station rotating tooling 3, and a third handling manipulator 63 for handling the welded upper shell 900 of the battery box on the double-station rotating tooling 3 to the conveying device 5.

[0041] The structures of the movable ends of the first handling manipulator 61 and the third handling manipulator 63 are the same and both include a first gripper frame 611, a plurality of adsorption components 612 arranged on the first gripper frame 611 and used for adsorbing the upper surface of the bottom plate 800, a plurality of second positioning components 613 arranged on the first gripper frame 611 and used for positioning the upper cover 700, and a plurality of first clamping components 614 arranged on the first gripper frame 611 and located at the outer peripheral edge of the bottom plate 800 for clamping the bottom plate 800. The adsorption component 612 includes a first mounting seat 6121 and a suction cup 6122 fixed to the lower end of the first mounting seat 6121. When the first clamping component 614 clamps the edge of the bottom plate 800, since the bottom plate 800 is large in size and plate-shaped, in order to prevent the middle area of the bottom plate 800 from collapsing downward, the first gripper frame 611 is provided with a plurality of suction cups 6122 in the middle area of the bottom plate 800 to adsorb the middle area of the bottom plate 800, so that the bottom plate 800 can be kept flat and will not collapse downward when the bottom plate 800 is grabbed. The second positioning component 613 includes a third driving member 6131 and a third positioning pin 6132 driven by the third driving member 6131 to move up and down and extending into the positioning hole of the bottom plate 800. The two second positioning components 613 are arranged at both ends of the bottom plate 800, which can ensure the accuracy and precision of positioning. The first clamping component 614 includes a second pressing rod 6141 fixed to the first gripper frame 611 and used for pressing the upper surface of the bottom plate 800, a fourth driving member 6142 fixed to the first gripper frame 611, a first rotating block 6144 driven by the fourth driving member 6142 to rotate, and a third pressing rod 6143 fixed to the first rotating block 6144 and capable of extending and abutting against the lower surface of the bottom plate 800 and located directly below the second pressing rod 6141; a plurality of first clamping components 614 are arranged around the outer periphery of the bottom plate 800 to facilitate maintaining the stability during grasping.

[0042] The movable end of the second handling manipulator 62 includes a second gripper frame 621, a plurality of third positioning components 622 arranged on the second gripper frame 621 for positioning the upper cover 700, a plurality of second clamping components 623 arranged on the second gripper frame 621 for clamping the upper cover 700, and a flattening component 624 arranged in imitation of the outer periphery of the upper cover 700 for pressing the bottom edge lip of the upper cover 700. The third positioning component 622 includes a fifth driving member 6221 installed on the second gripper frame 621 and a fourth positioning pin 6222 driven by the fifth driving member 6221 to move up and down and extend into the positioning hole of the upper cover 700; two third positioning components 622 are arranged at both ends of the upper cover 700, which can ensure the accuracy and precision of positioning. The second clamping component 623 includes an elastic rod 6231 arranged at the edge of the second gripper frame 621 and capable of elastically floating up and down to press the upper surface of the upper cover 700, a sixth driving member 6232 fixed on the second gripper frame 621, a second rotating block 6234 driven by the sixth driving member 6232 to rotate, and a pressing block 6233 fixed on the second rotating block 6233 and capable of extending and abutting against the lower surface of the upper end of the upper cover 700 and located directly below the elastic rod 6231; a spring is sleeved on the outer periphery of the elastic rod 6231, which can elastically float and press the outer edge of the upper cover 700; two second clamping components 623 are arranged on the inner sides of both ends of the upper cover 700 to ensure the stability of grasping the upper cover 700. The flattening component 624 includes a plurality of vertical pressing blocks 6241 arranged below the second gripper frame 621 and surrounding the outer periphery of the side of the upper cover 700. The plurality of vertical pressing blocks 6241 are sequentially spliced to form an annular structure surrounding the outer periphery of the upper cover 700. The lower end of the vertical pressing block 6241 abuts against the lip of the bottom edge of the upper cover 700. After the second handling manipulator 62 transports the upper cover 700 in place and moves downward, the plurality of vertical pressing blocks 6241 of the flattening component 624 simultaneously press the lip of the bottom edge of the upper cover 700 and keep the lip of the bottom edge of the upper cover 700 flat, preparing for the subsequent welding of the upper cover 700 and the bottom plate 800.

[0043] The movable end of the welding manipulator 4 includes a welding torch head for welding, a welding torch base for placing the welding torch head, a conveying pipe fixed on the welding torch base and used to convey the welding wire to the welding end of the welding torch head, and a blowpipe arranged on the welding torch base and located on one side of the welding torch head for blowing air to clean the welding slag. The blowpipe blows air at the welding position of the workpiece before and after welding to facilitate the cleaning of the welding slag generated by welding.

[0044] The double-station rotating tooling 3 includes two sets of clamping and positioning modules 31 for clamping and positioning the upper cover 700 and the bottom plate 800, a rotating workbench 32 for fixing and supporting the two sets of clamping and positioning modules 31, and a first driving member 33 for driving the two sets of clamping and positioning modules 31 to switch positions between the welding loading and unloading station and the welding station.

[0045] In this embodiment, the welding loading and unloading stations are located on the right side, all within the travel range of the first handling robot 61, the second handling robot 62 and the third handling robot 63, and the welding station is located on the left side, within the travel range of the welding robot 4.

[0046] The clamping and positioning module 31 includes a welding support platform 311 for positioning the upper cover 700 and the base plate 800 at the position to be welded, a positioning support mechanism 312 arranged inside the welding support platform 311 and for positioning and supporting the inner side of the upper cover 700, and several clamping mechanisms 313 arranged on the periphery of the base plate 800 and used to support and clamp the base plate 800.

[0047] The welding support platform 311 is provided with a positioning boss (not shown in the figure) that is shaped like the weld path. The position at the bottom end of the upper cover 700 to be welded and the position at the bottom plate 800 to be welded are spliced and positioned on the positioning boss, waiting for welding; a number of positioning support mechanisms 312 are distributed inside the positioning boss.

[0048] In order to achieve the positioning of the upper cover 700 on the welding support platform 311 and prevent deformation of the four sides of the upper cover 700, the positioning and support mechanism 312 includes a first positioning component 3121 for positioning the upper cover 700, a plurality of second support rods 3122 for supporting the top end of the upper cover 700, and a plurality of support blocks 3123 for supporting the inner side of the upper cover 700; the first positioning component 3121 includes a first mounting frame 31211 arranged on the welding support platform 311 and a second positioning pin 31212 arranged at the upper end of the first mounting frame 31211. Two groups of first positioning components 3121 are arranged at both ends of the upper cover 700 to achieve the positioning of the upper cover 700; in order to prevent the deformation of the side of the upper cover 700 and the change of the position of the weld, a plurality of support blocks 3123 are provided to support the inner side of the upper cover 700, which can prevent the deformation of the side of the upper cover 700 and ensure the accuracy of the welding position. When the second handling robot 602 places the upper cover 700 on the welding support platform 311, the two second positioning pins 31212 are both extended into the positioning holes of the upper cover 700 to achieve positioning, and several second support rods 3122 are supported on the top of the upper cover 700, and several support blocks 3123 are supported on the side of the upper cover 700, together achieving positioning and support on the upper cover 700.

[0049] The clamping mechanism 313 includes a support assembly 3131 that supports the lower edge of the base plate 800 and a clamping assembly 3132 that compresses the upper surface of the base plate 800. The support assembly 3131 includes a second mounting frame 31311 and a third support rod 31312 mounted on the second mounting frame 31311 and used to support the lower edge of the base plate 800. The second mounting frame 31311 may be provided with one or more third support rods 31312 to ensure support stability. The clamping assembly 3132 includes a second driving member 31321 mounted on the second mounting frame 31311, a rotating rod 31322 driven to rotate by the second driving member 31321, and a first clamping rod 31323 fixed to the end of the rotating rod 31322 and used to compress the upper edge of the base plate 800. In order to prevent the deformation of the base plate 800 and cause the position of the weld to change, clamping plates 31324 are provided on both sides of the first clamping rod 31323 located at the welding position of the base plate 800. The clamping plates 31324 are spread over the edge of the base plate 800 and press the base plate 800, thereby ensuring the accuracy of the welding position.

[0050] The clamping and positioning module 31 on the welding loading and unloading station is located outside the welding chamber 34 and is used to clamp and position the upper cover 700 and the base plate 800. The clamping and positioning module 31 on the welding station is located inside the welding chamber 34 and is used to cooperate with the welding robot 4 to weld the overlap between the upper cover 700 and the base plate 800. The welding station is located inside the welding chamber 34, realizing welding protection and ensuring the safety of the operator. After the first handling robot 61 carries the base plate 800 from the first feeding station 1 to the clamping mechanism 313 of the welding loading and unloading station for clamping and positioning, and the second handling robot 62 carries the upper cover 700 from the second feeding station 2 to the welding support table 311 for positioning, the first driving member 33 drives the rotating worktable 32 to rotate the upper cover 700 and the base plate 800 to the welding station in the welding chamber 34, and the welding robot 4 completes the welding of the overlap between the upper cover 700 and the base plate 800. At the same time, the first handling robot 61 and the second handling robot 62 complete the loading of the base plate 800 and the upper cover 700, respectively, realizing simultaneous loading and welding operations and high work efficiency. The weld between the upper cover 700 and the base plate 800 is an elliptical weld with a thin overlap thickness and many bends in the weld. Therefore, this embodiment adopts laser welding, and the weld is positioned and tracked during the high-speed welding process to ensure that the weld is not biased, the workpiece does not deform during welding, and there is no air leakage. After welding is completed at the welding station, the first driving member 33 drives the rotating workbench 32 to rotate the welded battery box upper shell 900 to the welding loading and unloading station outside the welding chamber 34, and the third handling robot 63 transports the battery box upper shell 900 to the conveying device 5 and enters the next station.

[0051] The conveying device 5 includes a conveying line 51 and a positioning mechanism 52 installed above the conveying line 51 for positioning the upper shell 900 of the battery box; the positioning mechanism 52 includes a positioning seat 521, a plurality of first positioning pins 522 arranged on the positioning seat 521, and a plurality of first support rods 523 arranged on the positioning seat 521. After the positioning mechanism 52 reaches the set position, the third handling manipulator 63 transports the upper shell 900 of the battery box that has been welded on the double-station rotating tooling 3 to the positioning mechanism 52. A plurality of first positioning pins 522 extend into the positioning holes of the upper shell 900 of the battery box, and a plurality of first support rods 523 simultaneously support the lower surface of the upper shell 900 of the battery box, completing the positioning of the upper shell 900 of the battery box on the conveying line 51. Then, the conveying device 5 transports the upper shell 900 of the battery box forward to the next station.

[0052] An automated welding production line for the upper shell of a battery box in this solution has the following working process: The first handling manipulator 61 transports the bottom plate 800 from the first feeding station 1 to the clamping mechanism 313 at the welding loading and unloading station for clamping and positioning. The third support rod 31312 supports the lower edge of the bottom plate 800, and the second driving member 31321 drives the rotating rod 31322 to drive the first pressing rod 31323 to press against the upper edge of the bottom plate 800. The second handling manipulator 62 transports the upper cover 700 from the second feeding station 2 to the welding support table 311. Both second positioning pins 31212 extend into the positioning holes of the upper cover 700 to achieve positioning. Several second support rods 3122 support the top of the upper cover 700, and several support blocks 3123 support the side of the upper cover 700, jointly achieving the positioning and support of the upper cover 700. After the upper cover 700 and the bottom plate 800 are both clamped and positioned, the first driving member 33 drives the rotating workbench 32 to rotate, rotating the upper cover 700 and the bottom plate 800 from the welding loading and unloading station to the welding station inside the welding chamber 34. The welding manipulator 4 completes the welding of the overlapping part between the upper cover 700 and the bottom plate 800. The blowpipe blows air at the welding position of the workpiece before and after welding to clean the welding slag generated by welding. While the welding manipulator 4 is welding, the first handling manipulator 61 and the second handling manipulator 62 respectively complete the feeding of the bottom plate 800 and the upper cover 700. After welding, the first driving member 33 drives the rotating workbench 32 to rotate, rotating the welded battery box upper shell 900 from the welding station to the welding loading and unloading station outside the welding chamber 34. At the same time, the newly placed upper cover 700 and bottom plate 800 rotate to the welding station inside the welding chamber 34. The third handling manipulator 63 transports the battery box upper shell 900 to the positioning mechanism 52 of the conveying device 5. Several first positioning pins 522 extend into the positioning holes of the battery box upper shell 900 and several first support rods 523 simultaneously support the lower surface of the battery box upper shell 900, completing the positioning of the battery box upper shell 900 on the conveying line 51. Then, the conveying device 5 transports the battery box upper shell 900 forward to the next station.

[0053] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. An automated welding production line for the upper shell of a battery box, which is used to weld the upper cover and the bottom plate to form the upper shell of the battery box, and is characterized in that: It includes a first feeding station for feeding the bottom plate at the rear side, a second feeding station for feeding the upper cover at the right side, a double-station rotary tooling for positioning the upper cover and the bottom plate at the left side, a welding manipulator at one side of the double-station rotary tooling, a conveying device for conveying the welded battery box upper shell at the front side, and a handling manipulator for handling the upper cover, the bottom plate and the battery box upper shell at the middle position; the double-station rotary tooling includes two sets of clamping and positioning modules for clamping and positioning the upper cover and the bottom plate, a rotating workbench for fixedly supporting the two sets of clamping and positioning modules, and a first driving member for driving the two sets of clamping and positioning modules to switch positions between the welding loading and unloading station and the welding station.

2. The automated welding production line for the upper shell of a battery box according to claim 1, wherein: The movable end of the welding manipulator includes a welding torch head for welding, a welding torch base for placing the welding torch head, a conveying pipe fixed on the welding torch base and conveying the welding wire to the welding end of the welding torch head, and a blow pipe arranged on the welding torch base and on one side of the welding torch head for blowing air to clean the welding slag.

3. The automated welding production line for the upper shell of a battery box according to claim 1, wherein: The conveying device includes a conveying line and a positioning mechanism installed above the conveying line for positioning the battery box upper shell; the positioning mechanism includes a positioning seat, a plurality of first positioning pins arranged on the positioning seat, and a plurality of first support rods arranged on the positioning seat.

4. The automated welding production line for the upper shell of a battery box according to claim 1, characterized in that: The handling manipulator includes a first handling manipulator for handling the bottom plate on the first feeding station to the double-station rotary tooling, a second handling manipulator for handling the upper cover on the second feeding station to the double-station rotary tooling, and a third handling manipulator for handling the welded battery box upper shell on the double-station rotary tooling to the conveying device.

5. The automated welding production line for the upper shell of a battery box according to claim 1, characterized in that: The clamping and positioning module includes a welding support table for positioning the welding positions of the upper cover and the bottom plate, a positioning and supporting mechanism arranged inside the welding support table for positioning and supporting the upper cover, and a plurality of clamping mechanisms arranged on the outer periphery of the bottom plate for supporting and clamping the bottom plate.

6. The automated welding production line for the upper housing of a battery box according to claim 5, characterized in that: The welding support table is provided with a positioning boss arranged in imitation of the weld path, and a plurality of the positioning and supporting mechanisms are distributed inside the positioning boss.

7. An automated welding production line for the upper housing of a battery pack, characterized in that: The positioning and supporting mechanism includes a first positioning component for positioning the upper cover, a plurality of second support rods for supporting the top end of the upper cover, and a plurality of support blocks for supporting the inner side edges of the upper cover; the first positioning component includes a first mounting frame arranged on the welding support table and a second positioning pin arranged at the upper end of the first mounting frame.

8. The automated welding production line for the upper shell of a battery box according to claim 5, characterized in that: The clamping mechanism includes a support component for supporting the lower edge of the bottom plate and a pressing component for pressing the upper surface of the bottom plate; the support component includes a second mounting frame and a third support rod installed on the second mounting frame for supporting the lower edge of the bottom plate; the pressing component includes a second driving member arranged on the second mounting frame, a rotating rod driven by the second driving member to rotate, and a first pressing rod fixed at the end of the rotating rod for pressing the upper edge of the bottom plate.

9. The automated welding production line for the upper housing of a battery box according to claim 4, wherein: The structures of the moving ends of the first handling manipulator and the third handling manipulator are the same and both include a first gripper frame, a plurality of adsorption components arranged on the first gripper frame and used for adsorbing the upper surface of the bottom plate, a plurality of second positioning components arranged on the first gripper frame and used for positioning the upper cover, and a plurality of first clamping components arranged on the first gripper frame and located at the outer peripheral edge of the bottom plate for clamping the bottom plate.

10. The automated welding production line for the upper shell of a battery box according to claim 4, characterized in that: The moving end of the second handling manipulator includes a second gripper frame, a plurality of third positioning components arranged on the second gripper frame and used for positioning the upper cover, a plurality of second clamping components arranged on the second gripper frame and used for clamping the upper cover, and a flattening component arranged in imitation of the outer circumference of the upper cover and used for pressing the lip at the bottom edge of the upper cover.

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