Laser CMT combined welding equipment for battery box and welding method

Abstract

The invention discloses laser CMT combined welding equipment for a battery box and a welding method.The laser CMT combined welding equipment comprises a loading frame, the loading frame, a laser welding robot and a CMT welding robot are all arranged in a safety room, and a first clamp table and a second clamp table are arranged on the two sides of the loading frame correspondingly; the first clamp assembly and the second clamp assembly are arranged at the two ends of the first clamp table correspondingly, the third clamp assembly and the fourth clamp assembly are arranged at the two ends of the second clamp table correspondingly, and the first clamp assembly, the second clamp assembly, the third clamp assembly and the fourth clamp assembly are all matched with the CMT welding robot. The first clamp assembly and the third clamp assembly are both matched with the laser welding robot. Four different semi-finished product parts are welded on the first clamp table and the second clamp table respectively, and then the four different semi-finished product parts are welded into products at a time on other welding equipment, so that the investment of the number of the welding equipment can be effectively reduced, the investment cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a laser CMT combined welding device and a welding method for a battery box. Background Art

[0002] The market share of new energy vehicles is increasing, and the performance requirements for vehicles are also getting higher and higher, especially the endurance, safety and charging and discharging speed. This requires that the power battery capacity of new energy vehicles is getting larger and larger, and the reliability and stability of the battery are getting better and better. The carrier of the power battery is the battery box, and the lightweight and reliability requirements of the battery box are also constantly increasing. At present, most battery boxes are made of aluminum alloy materials through welding. There are many welding positions in the battery box. If assembly and welding are carried out in the form of an assembly line, this will increase the cost of the production line. If welding is carried out on a welding table, it will make it impossible to load materials during welding, and it will be impossible to weld during loading, resulting in low processing efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a laser CMT combined welding device and a welding method for a battery box.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A laser CMT combined welding device for a battery box, comprising a loading rack, a positioner, a first fixture table, a second fixture table, a first fixture assembly, a second fixture assembly, a third fixture assembly, a fourth fixture assembly, a laser welding robot, a CMT welding robot, a safety room, a base, a rotating seat and a rotating drive member, wherein the laser welding robot and the CMT welding robot are both fixedly arranged in the safety room, the base is fixedly arranged in the safety room and is between the laser welding robot and the door of the safety room, the rotating seat is rotatably arranged on the base, the rotating drive member is fixedly arranged on the base and is used to drive the rotating seat to rotate, and the rotating The loading frame is fixedly arranged on the seat, and the first fixture table and the second fixture table are respectively arranged on both sides of the loading frame, the first fixture table and the second fixture table are respectively connected to the loading frame through the positioner, the first fixture assembly and the second fixture assembly are respectively arranged on both ends of the first fixture table, the third fixture assembly and the fourth fixture assembly are respectively arranged on both ends of the second fixture table, the first fixture assembly, the second fixture assembly, the third fixture assembly and the fourth fixture assembly all cooperate with the CMT welding robot, and the first fixture assembly and the third fixture assembly all cooperate with the laser welding robot.

[0006] Further, the first clamp assembly includes a first small clamp component, a second small clamp component, a third small clamp component, a fourth small clamp component, a first large clamp component and a second large clamp component, the first small clamp component, the second small clamp component and the first large clamp component are arranged on the same side and the first large clamp component is arranged between the first small clamp component and the second small clamp component, the third small clamp component, the fourth small clamp component and the second large clamp component are arranged on the same side and the second large clamp component is arranged between the third small clamp component and the fourth small clamp component, and the second small clamp component and the fourth small clamp component are arranged close to the second clamp assembly side;

[0007] The third clamp assembly includes a fifth small clamp component, a sixth small clamp component, a seventh small clamp component, a third large clamp component and a fourth large clamp component, the third large clamp component and the fourth large clamp component are fixedly arranged on both sides of the middle part of the second clamp table, the sixth small clamp component is fixedly arranged on the second clamp table and is located between the third large clamp component and the fourth large clamp component, the fifth small clamp component is fixedly arranged on the end of the second clamp table, and the seventh small clamp component is fixedly arranged on the second clamp table and is located between the third large clamp component and the fourth clamp assembly;

[0008] The first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the first large fixture component and the third large fixture component all cooperate with the CMT welding robot, and the second large fixture component and the fourth large fixture component all cooperate with the laser welding robot.

[0009] Further, the first small clamp component, the second small clamp component, the third small clamp component, the fourth small clamp component, the fifth small clamp component, the sixth small clamp component and the seventh small clamp component all include a connecting seat, an adjusting seat, a first part seat, a first cylinder seat, a second cylinder seat, a first cylinder, a second cylinder, a third cylinder, a first clamping block, a second clamping block, a third clamping block, a fourth clamping block, a clamping plate and a limiting spring plate, the adjusting seat is arranged on the lower end of the connecting seat, the first cylinder seat is fixedly arranged on the lower end of the adjusting seat, the first part seat is fixedly arranged on the upper end of the adjusting seat, the second cylinder seat is fixedly arranged on the top of the connecting seat, the first cylinder is fixedly arranged on the first cylinder seat and the output end is hinged to the lower ends of the first clamping block and the second clamping block, and the first clamping block and the second clamping block are The middle parts are hinged to the end parts of the first cylinder seat, the upper ends of the first clamping block and the second clamping block respectively cooperate with the two ends of the first part on the first part seat, the first part is connected with the second part, and the two sides of the second part respectively cooperate with the third clamping block and one end of the fourth clamping block, the middle parts of the third clamping block and the fourth clamping block are hinged to the second cylinder seat, the other end of the third clamping block is hinged to one end of the second cylinder, the other end of the fourth clamping block is hinged to one end of the third cylinder, the other ends of the second cylinder and the third cylinder are hinged to the second cylinder seat, a clamping plate cooperating with the second part is arranged on the end of the fourth clamping block, and a limiting spring plate cooperating with the second part is fixedly arranged on the second cylinder seat, and the limiting spring plate and the third clamping block are respectively arranged on both sides of the second part.

[0010] Furthermore, a manual lever is fixedly provided on the third clamping block and the fourth clamping block, a first limiting spring piece cooperating with the third clamping block is provided on one side of the second cylinder seat, a second limiting spring piece cooperating with the fourth clamping block is provided on the other side of the second cylinder seat, a first detection sensor cooperating with the first part is provided on the first part seat, and a second detection sensor cooperating with the second part is provided on the second cylinder seat.

[0011] Furthermore, the connecting seat is hinged to the upper end of the adjusting seat, an adjusting block is fixedly provided on the lower end of the connecting seat, an adjusting screw cooperating with the adjusting seat is provided on the adjusting block, the adjusting slot is provided on the connecting seat, and a fastening bolt threadedly connected to the adjusting seat is provided in the adjusting slot.

[0012] Furthermore, the second large clamp component includes a nut detection structure, which includes a detection bracket, a mounting sleeve, a limit sleeve, a detection rod, a detection spring, a limit ring and a proximity switch. The mounting sleeve is fixed to the first clamp table through the detection bracket, the limit sleeve is arranged in the upper end of the mounting sleeve, the detection rod is slidably arranged in the limit sleeve, the upper end of the detection rod passes through the limit sleeve and cooperates with the detection nut, the lower end of the detection rod passes through the limit ring and cooperates with the proximity switch, the proximity switch is fixedly arranged on the lower end of the mounting sleeve, the detection spring is sleeved on the detection rod and one end is pressed against the detection rod, and the other end is pressed against the limit ring.

[0013] Further, the second clamp assembly includes a third part seat, a first clamping component, a second clamping component, a third clamping component, a third detection sensor and a fourth detection sensor, the third part seat, the first clamping component, the second clamping component and the third clamping component are all fixedly arranged on the first clamping table, the first clamping component fastens the third part to the third part seat, the second clamping component fastens the fourth part to the third part, the third clamping component fastens the fifth part to the third part, the first clamping component is provided with the third detection sensor for detecting the third part, and the second clamping component is provided with the fourth detection sensor for detecting the fourth part;

[0014] The third clamping component includes a flipping cylinder, a fixture seat, a clamping seat, a positioning end, a clamping end, a clamping rod, a clamping cylinder and a fifth detection sensor. The fixed part of the flipping cylinder is fixedly arranged on the first fixture table, the fixture seat is fixedly arranged on the output part of the flipping cylinder, the clamping seat is fixedly arranged on the fixture seat and is used to install the fifth part, the positioning end is fixedly arranged on the fixture seat and cooperates with one end of the fifth part, the clamping end is fixedly arranged on one end of the clamping rod and cooperates with the other end of the fifth part, the middle part of the clamping rod is hinged to the fixture seat, the other end of the clamping rod is hinged to one end of the clamping cylinder, the other end of the clamping cylinder is hinged to the fixture seat, and the fifth detection sensor is fixedly arranged on the clamping seat and cooperates with the fifth part.

[0015] Furthermore, a safety protection plate is fixedly installed on the loading frame, the first clamp table and the second clamp table are respectively arranged on both sides of the safety protection plate, a protective cover that cooperates with the rotating seat is fixedly installed on the lower side of the safety protection plate, and the base and the rotating drive component are both arranged in the protective cover.

[0016] Furthermore, two detection blocks are arranged on the outer wall of the rotating seat, and the connecting line between the two detection blocks passes through the axis line of the rotating seat. Two sixth detection sensors respectively cooperating with the two detection blocks are arranged on the base, and a worker detection sensor is arranged at the door of the safe room.

[0017] A battery box welding method, using the laser CMT combined welding device for a battery box, the welding method comprises the following steps:

[0018] S1: On the first fixture table, a worker installs welding parts on the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the first large fixture component and the second fixture assembly;

[0019] S2: After the installation is completed, the operator moves away from the loading frame, and then controls the first small clamp component, the second small clamp component, the third small clamp component, the fourth small clamp component, the first large clamp component and the second clamp component to clamp the welding parts, and then controls the rotary drive component to drive the rotary seat to rotate horizontally on the base in a positive direction of °;

[0020] S3: Start the CMT welding robot to weld the parts on the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the first large fixture component and the second fixture assembly. At the same time, on the second fixture table, a worker installs welding parts on the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the third large fixture component and the fourth fixture assembly.

[0021] S4: When the welding of the parts on the first fixture table is completed and the installation of the parts on the second fixture table is completed, the operator moves away from the loading rack, controls the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the third large fixture component and the fourth fixture assembly to clamp the welding parts, and then controls the rotary drive component to drive the rotary seat to rotate horizontally in the opposite direction on the base by degrees;

[0022] S5: Start the CMT welding robot to weld the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the third large fixture component and the fourth fixture assembly parts. At the same time, on the first fixture table, the worker installs the welded parts obtained by welding the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component and the first large fixture component into the second large fixture component, removes the parts on the second fixture assembly, and then installs the welded parts on the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the first large fixture component and the second fixture assembly;

[0023] S6: When the welding of the parts on the second fixture table is completed and the installation of the parts on the first fixture table is completed, the operator moves away from the loading rack, and then controls the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the first large fixture component, the second large fixture component and the second fixture assembly to clamp the welding parts, and then controls the rotary drive component to drive the rotary seat to rotate horizontally in the positive direction ° on the base;

[0024] S7: Start the CMT welding robot and the laser welding robot, the CMT welding robot welds the parts on the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the first large fixture component and the second fixture assembly, and the laser welding robot welds the parts on the second large fixture component. At the same time, on the second fixture table, the workers install the welded parts on the fifth small fixture component, the sixth small fixture component, the seventh small fixture component and the third large fixture component to the fourth large fixture component, remove the welded parts on the fourth fixture assembly, and then the workers install the welded parts on the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the third large fixture component and the fourth fixture assembly;

[0025] S8: When the welding of the parts on the first fixture table is completed and the installation of the parts on the second fixture table is completed, the operator moves away from the loading rack, controls the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the third large fixture component, the fourth large fixture component and the fourth fixture assembly to clamp the welding parts, and then controls the rotary drive component to drive the rotary seat to rotate horizontally in the opposite direction on the base.

[0026] S9: Start the CMT welding robot and the laser welding robot, the CMT welding robot welds the parts on the fifth small fixture component, the sixth small fixture component, the seventh small fixture component, the third large fixture component and the fourth fixture assembly, and the laser welding robot welds the parts on the fourth large fixture component. At the same time, on the first fixture table, a worker installs the welded parts obtained by welding the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component and the first large fixture component in the second large fixture component, removes the parts on the second fixture assembly, and then installs the welded parts on the first small fixture component, the second small fixture component, the third small fixture component, the fourth small fixture component, the first large fixture component and the second fixture assembly;

[0027] S10: Repeat steps S6 to S9 to perform continuous production.

[0028] The beneficial effects of the present invention are:

[0029] 1) In this technology, four different semi-finished parts are welded on the first fixture table and the second fixture table respectively, and then the four different semi-finished parts are welded into products at one time on other welding equipment, which can effectively reduce the investment in the number of welding equipment and reduce the investment cost. The first fixture table and the second fixture table work at the same time, one side is for welding, and the other side is for upper and lower parts, which can effectively improve production efficiency.

[0030] 2) In the present technology, a nut detection structure is provided to effectively detect the nut, and the structure is simple and the detection is convenient.

[0031] 3) In the present technology, the third part and the fourth part are first welded on the second fixture assembly, and then the third part and the fifth part are welded, which can effectively prevent interference.

[0032] 4) In this technology, a safety protection plate can be set up to separate the two workbenches, so that the light pollution generated during welding will not affect the workers' loading of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a three-dimensional structural diagram of the safe room;

[0034] Figure 2 This is a three-dimensional structural diagram of the interior of the safe room;

[0035] Figure 3 This is the connection structure diagram of the positioner on the loading frame;

[0036] Figure 4is a connection structure diagram of the sixth detection sensor on the base;

[0037] Figure 5 A connection structure diagram of the first fixture assembly and the second fixture assembly on the first fixture table;

[0038] Figure 6 is a structural diagram of the connection between the third fixture assembly and the fourth fixture assembly on the second fixture table;

[0039] Figure 7 Three-dimensional connection structure for small fixture parts Figure 1 ;

[0040] Figure 8 Three-dimensional connection structure for small fixture parts Figure 2 ;

[0041] Fig. 9 It is a three-dimensional connection structure diagram of the nut detection structure;

[0042] Fig.10 It is the internal connection structure diagram of the nut detection structure;

[0043] Fig.11 It is a three-dimensional connection structure diagram of the second fixture assembly when the fifth part is welded;

[0044] Fig.12 is a three-dimensional connection structure diagram of the second fixture assembly when the fifth part is not welded;

[0045] In the figure, 1-loading frame, 2-positioner, 3-first fixture table, 4-second fixture table, 5-first fixture assembly, 6-second fixture assembly, 7-third fixture assembly, 8-fourth fixture assembly, 9-first small fixture component, 10-second small fixture component, 11-third small fixture component, 12-fourth small fixture component, 13-first large fixture component, 14-second large fixture component, 15-fifth small fixture component, 16-sixth small fixture component, 17-seventh small fixture component, 18-third large fixture component 1-4th largest fixture component, 20-connecting seat, 21-adjusting seat, 22-first part seat, 23-first cylinder seat, 24-second cylinder seat, 25-first cylinder, 26-second cylinder, 27-third cylinder, 28-first clamping block, 29-second clamping block, 30-third clamping block, 31-fourth clamping block, 32-pressing plate, 33-limiting spring plate, 34-first part, 35-second part, 36-manual lever, 37-first limiting spring sheet, 38-second limiting spring sheet, 3 9-first detection sensor, 40-second detection sensor, 41-adjusting block, 42-adjusting screw, 43-adjusting slot, 44-detection bracket, 45-mounting sleeve, 46-limiting sleeve, 47-detection rod, 48-detection spring, 49-limiting ring, 50-proximity switch, 51-detection nut, 52-third part seat, 53-first clamping component, 54-second clamping component, 55-third clamping component, 56-third detection sensor, 57-fourth detection sensor, 58-third part, 59 -The fourth part, 60-the fifth part, 61-the flip cylinder, 62-the clamp seat, 63-the clamp seat, 64-the positioning end, 65-the pressing end, 66-the pressing rod, 67-the pressing cylinder, 68-the fifth detection sensor, 69-the laser welding robot, 70-the CMT welding robot, 71-the safety room, 72-the base, 73-the rotating seat, 74-the rotating drive part, 75-the safety protection plate, 76-the protective cover, 77-the detection block, 78-the sixth detection sensor, 79-the worker detection sensor. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-Figure 12 , the present invention provides a technical solution:

[0048] A laser CMT combined welding device for a battery box includes a loading rack 1, a positioner 2, a first fixture table 3, a second fixture table 4, a first fixture assembly 5, a second fixture assembly 6, a third fixture assembly 7, a fourth fixture assembly 8, a laser welding robot 69, a CMT welding robot 70, a safety room 71, a base 72, a rotating seat 73 and a rotating drive member 74. The laser welding robot 69 and the CMT welding robot 70 are both fixedly arranged in the safety room 71, the base 72 is fixedly arranged in the safety room 71 and is located between the laser welding robot 69 and the door of the safety room 71, the base 72 is rotatably provided with a rotating seat 73, and the rotating drive member 74 is fixedly arranged on the bottom The base 72 is used to drive the rotating base 73 to rotate. The loading frame 1 is fixedly arranged on the rotating base 73. The first fixture table 3 and the second fixture table 4 are respectively arranged on both sides of the loading frame 1. The first fixture table 3 and the second fixture table 4 are respectively connected to the loading frame 1 through the positioner 2. The first fixture assembly 5 and the second fixture assembly 6 are respectively arranged on the two ends of the first fixture table 3, and the third fixture assembly 7 and the fourth fixture assembly 8 are respectively arranged on the two ends of the second fixture table 4. The first fixture assembly 5, the second fixture assembly 6, the third fixture assembly 7 and the fourth fixture assembly 8 are all matched with the CMT welding robot 70, and the first fixture assembly 5 and the third fixture assembly 7 are all matched with the laser welding robot 69. Among them, the first fixture table 3 and the second fixture table 4 are centrally symmetrically arranged on the loading frame 1. The positioner 2, the first fixture assembly 5, the second fixture assembly 6, the third fixture assembly 7, the fourth fixture assembly 8, the laser welding robot 69, the CMT welding robot 70 and the rotary drive 74 are all electrically connected to the control center in the prior art. Under the action of the control center, the welding equipment can automatically clamp the parts, automatically weld and automatically relax. The rotary drive 74 is a combination structure of a motor and a reducer in the prior art. Under the action of the rotary drive 74, the rotating seat 73 rotates 180° forward or 180° reverse on the base 72, thereby realizing the exchange welding of parts on the first fixture table 3 and the second fixture table 4. The laser welding robot 69 and the CMT welding robot 70 are both welding robots in the prior art. The loading frame 1 is installed with the first fixture table 3 and the second fixture table 4 through two positioners 2. The positioner 2 is the prior art. The positioner 2 is controlled by the control center so that the first fixture table 3 and the second fixture table 4 can both rotate on the loading frame 1, which is convenient for the welding robot to perform welding. The first clamp assembly 5, the second clamp assembly 6, the third clamp assembly 7 and the fourth clamp assembly 8 form four groups of welding, and each group of welding obtains a semi-finished welded part. The first clamp assembly 5, the second clamp assembly 6, the third clamp assembly 7 and the fourth clamp assembly 8 are all controlled by the control center, and the control center controls the first clamp assembly 5, the second clamp assembly 6, the third clamp assembly 7 and the fourth clamp assembly 8 to clamp the corresponding parts, and then release the parts after welding is completed.The safety room 71 protects the equipment inside and prevents the light pollution generated during welding from affecting the outside.

[0049] In some embodiments, the first clamp assembly 5 includes a first small clamp component 9, a second small clamp component 10, a third small clamp component 11, a fourth small clamp component 12, a first large clamp component 13 and a second large clamp component 14, the first small clamp component 9, the second small clamp component 10 and the first large clamp component 13 are arranged on the same side and the first large clamp component 13 is arranged between the first small clamp component 9 and the second small clamp component 10, the third small clamp component 11, the fourth small clamp component 12 and the second large clamp component 14 are arranged on the same side and the second large clamp component 14 is arranged between the third small clamp component 11 and the fourth small clamp component 12, the second small clamp component 10 and the fourth small clamp component 12 are arranged close to the second clamp assembly 6 side; the third clamp assembly 7 includes a fifth small clamp component 15, a sixth small clamp component 16, a seventh small clamp component 17, a third large clamp component 18 and a fourth large The clamp component 19, the third large clamp component 18 and the fourth large clamp component 19 are fixedly arranged on both sides of the middle part of the second clamp table 4, the sixth small clamp component 16 is fixedly arranged on the second clamp table 4 and is located between the third large clamp component 18 and the fourth large clamp component 19, the fifth small clamp component 15 is fixedly arranged on the end of the second clamp table 4, and the seventh small clamp component 17 is fixedly arranged on the second clamp table 4 and is located between the third large clamp component 18 and the fourth clamp assembly 8; the first small clamp component 9, the second small clamp component 10, the third small clamp component 11, the fourth small clamp component 12, the fifth small clamp component 15, the sixth small clamp component 16, the seventh small clamp component 17, the first large clamp component 13 and the third large clamp component 18 are all cooperated with the CMT welding robot 70, and the second large clamp component 14 and the fourth large clamp component 19 are all cooperated with the laser welding robot 69. Among them, primary welding parts are obtained in the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13, the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17 and the third large fixture component 18. On the first fixture assembly 5, the primary welding parts obtained on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12 and the first large fixture component 13 are assembled and welded at the second large fixture component 14 to obtain secondary welding parts; on the third fixture assembly 7, the primary welding parts obtained on the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17 and the third large fixture component 18 are assembled and welded at the fourth large fixture component 19 to obtain secondary welding parts. The first large clamp component 13 , the second large clamp component 14 , the third large clamp component 18 and the fourth large clamp component 19 are all existing technologies and are controlled by the control center.The parts on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the first large fixture component 13 and the third large fixture component 18 are all welded by the CMT welding robot 70, and the parts on the second large fixture component 14 and the fourth large fixture component 19 are all welded by the laser welding robot 69.

[0050] In some embodiments, the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the fifth small fixture component 15, the sixth small fixture component 16 and the seventh small fixture component 17 all include a connecting seat 20, an adjustment seat 21, a first part seat 22, a first cylinder seat 23, a second cylinder seat 24, a first cylinder 25, a second cylinder 26, a third cylinder 27, a first clamping block 28, a second clamping block 29, and a third clamping block 30, the fourth clamping block 31, the pressing plate 32 and the limit spring plate 33, the adjustment seat 21 is arranged on the lower end of the connecting seat 20, the first cylinder seat 23 is fixedly arranged on the lower end of the adjustment seat 21, the first part seat 22 is fixedly arranged on the upper end of the adjustment seat 21, the second cylinder seat 24 is fixedly arranged on the top of the connecting seat 20, the first cylinder 25 is fixedly arranged on the first cylinder seat 23 and the output end is hinged with the lower ends of the first clamping block 28 and the second clamping block 29, the first clamping block The middle parts of the first clamping block 28 and the second clamping block 29 are hinged to the end of the first cylinder seat 23, the upper ends of the first clamping block 28 and the second clamping block 29 are respectively matched with the two ends of the first part 34 on the first part seat 22, the first part 34 is matched with the second part 35, the two sides of the second part 35 are respectively matched with the third clamping block 30 and one end of the fourth clamping block 31, the middle parts of the third clamping block 30 and the fourth clamping block 31 are both hinged to the second cylinder seat 24, the third clamping block 30 The other end of the fourth clamping block 31 is hinged to one end of the second cylinder 26, the other end of the fourth clamping block 31 is hinged to one end of the third cylinder 27, the other ends of the second cylinder 26 and the third cylinder 27 are hinged to the second cylinder seat 24, a clamping plate 32 cooperating with the second part 35 is arranged on the end of the fourth clamping block 31, a limiting spring plate 33 cooperating with the second part 35 is fixedly arranged on the second cylinder seat 24, and the limiting spring plate 33 and the third clamping block 30 are respectively arranged on both sides of the second part 35. Among them, the first small clamp component 9, the second small clamp component 10, the third small clamp component 11, the fourth small clamp component 12, the fifth small clamp component 15, the sixth small clamp component 16 and the seventh small clamp component 17 are welded to obtain the same welded parts, and the function of the connecting seat 20 is to fix the adjustment seat 21 and the second cylinder seat 24 on the first clamp table 3 or the second clamp table 4. The adjusting seat 21 is used to install the first part seat 22 and the first cylinder seat 23. The first part seat 22 is used to install the first part 34. The first cylinder 25 is fixed on the first cylinder seat 23 to drive the first clamping block 28 and the second clamping block 29 to rotate on the first cylinder seat 23. After the first clamping block 28 and the second clamping block 29 rotate, the first part 34 can be clamped or loosened.The second cylinder seat 24 is used to install the second cylinder 26 and the third cylinder 27. The second cylinder 26 drives the third clamping block 30 to clamp or loosen one side of the second part 35 from one side. The third cylinder 27 drives the fourth clamping block 31 to clamp or loosen the other side of the second part 35 from the other side. The clamping plate 32 is fixedly arranged on the fourth clamping block 31 to clamp the edge side of the second part 35. A groove matching the second part 35 is arranged on the edge side of the second part 35. The function of the limiting spring plate 33 is to limit the second part 35 to prevent the product from tilting and failing after welding. The first cylinder 25, the second cylinder 26 and the third cylinder 27 are all cylinders in the prior art and are controlled by solenoid valves. The solenoid valves are electrically connected to the control center and controlled by the control center.

[0051] In some embodiments, a manual lever 36 is fixedly provided on both the third clamping block 30 and the fourth clamping block 31, a first limit spring piece 37 cooperating with the third clamping block 30 is provided on one side of the second cylinder seat 24, a second limit spring piece 38 cooperating with the fourth clamping block 31 is provided on the other side of the second cylinder seat 24, a first detection sensor 39 cooperating with the first part 34 is provided on the first part seat 22, and a second detection sensor 40 cooperating with the second part 35 is provided on the second cylinder seat 24. The function of the manual lever 36 is to clamp the second part 35 by manually controlling the third clamping block 30 and the fourth clamping block 31, and such clamping is only temporary. It is long-term clamping only when the second cylinder 26 and the third cylinder 27 respectively control the third clamping block 30 and the fourth clamping block 31 to clamp the second part 35, and welding work can be performed after long-term clamping. The first detection sensor 39 and the second detection sensor 40 are both laser sensors in the prior art. The first detection sensor 39 and the second detection sensor 40 are both electrically connected to the control center. After the first detection sensor 39 detects the first part 34, it transmits a signal to the control center, and the control center controls the first cylinder 25 to work and clamp the first part 34. After the second detection sensor 40 detects the second part 35, it transmits a signal to the control center, and the control center controls the second cylinder 26 and the third cylinder 27 to work and clamp the second part 35. If no part is detected, it will not be clamped, and the corresponding sensor transmits a signal to the control center, and the control center performs an alarm through the alarm system in the prior art.

[0052] In some embodiments, the upper ends of the connecting seat 20 and the adjusting seat 21 are hinged, and an adjusting block 41 is fixedly provided on the lower end of the connecting seat 20. The adjusting block 41 is provided with an adjusting screw 42 that cooperates with the adjusting seat 21. The connecting seat 20 is provided with an adjusting slot 43, and a fastening bolt that is threadedly connected with the adjusting seat 21 is provided in the adjusting slot 43. Among them, since there is a certain angle between the connection relationship between the first part 34 and the second part 35, the adjusting seat 21 is driven to rotate on the connecting seat 20 by the use of the adjusting screw 42 and the adjusting block 41, so that the corresponding connection angle can be adjusted. After the adjustment is completed, the connecting seat 20 and the adjusting seat 21 are fixed by the fastening bolts, so the connecting seat 20 should be provided with an adjusting slot 43 that facilitates the sliding of the fastening bolts.

[0053] In some embodiments, the second large clamp component 14 includes a nut detection structure, which includes a detection bracket 44, a mounting sleeve 45, a limit sleeve 46, a detection rod 47, a detection spring 48, a limit ring 49 and a proximity switch 50. The mounting sleeve 45 is fixed to the first clamp table 3 through the detection bracket 44. A limit sleeve 46 is arranged at the upper end of the mounting sleeve 45. A detection rod 47 is slidably arranged in the limit sleeve 46. The upper end of the detection rod 47 passes through the limit sleeve 46 and cooperates with the detection nut 51. The lower end of the detection rod 47 passes through the limit ring 49 and cooperates with the proximity switch 50. The proximity switch 50 is fixedly set on the lower end of the mounting sleeve 45. The detection spring 48 is sleeved on the detection rod 47 and one end is pressed against the detection rod 47, and the other end is pressed against the limit ring 49. Among them, the function of the detection bracket 44 is to install the installation sleeve 45 on the first fixture table 3. The installation sleeve 45 is used to install the limit sleeve 46 and the proximity switch 50. The proximity switch 50 is a prior art and is electrically connected to the control center. The limit sleeve 46 is used to install the detection rod 47, the detection spring 48 and the limit ring 49. Under the action of the detection spring 48 and the limit ring 49, the detection rod 47 extends upward, and the detection rod 47 will not contact the proximity switch 50. When the detection nut 51 exists, the detection nut 51 presses the detection rod 47, and the detection rod 47 will be detected by the proximity switch 50. At this time, it proves that the detection nut 51 exists. When the detection nut 51 does not exist, the detection rod 47 will not be pressed, nor will it be detected by the proximity switch 50. At this time, it proves that there is no detection nut 51 and the detection nut 51 needs to be installed. After the detection nut 51 is installed, the loading frame 1 will rotate and further welding will be performed.

[0054] In some embodiments, the second fixture assembly 6 includes a third part seat 52, a first clamping component 53, a second clamping component 54, a third clamping component 55, a third detection sensor 56 and a fourth detection sensor 57. The third part seat 52, the first clamping component 53, the second clamping component 54 and the third clamping component 55 are all fixedly arranged on the first fixture table 3. The first clamping component 53 fastens the third part 58 to the third part seat 52, the second clamping component 54 fastens the fourth part 59 to the third part 58, and the third clamping component 55 fastens the fifth part 60 to the third part 58. The first clamping component 53 is provided with a third detection sensor 56 for detecting the third part 58, and the second clamping component 54 is provided with a fourth detection sensor 57 for detecting the fourth part 59. Among them, the third part seat 52 is used to support the third part 58. The fourth part 59 and the fifth part 60 need to be welded on the third part 58. The first clamping component 53, the second clamping component 54, the third detection sensor 56 and the fourth detection sensor 57 are all existing technologies and are electrically connected to the control center. When the third detection sensor 56 detects the third part 58, the signal is transmitted to the control center, and the control center controls the first clamping component 53 to clamp the third part 58. When the fourth detection sensor 57 detects the fourth part 59, the signal is transmitted to the control center, and the control center controls the second clamping component 54 to press the fourth part 59 onto the third part 58. When the third part 58 and the fourth part 59 are welded, the welding robot will be blocked by the third clamping component 55. Therefore, after the welding between the third part 58 and the fourth part 59 is completed, the third clamping component 55 presses the fifth part 60 onto the third part 58 for welding.

[0055] In some embodiments, the third clamping component 55 includes a flipping cylinder 61, a clamp seat 62, a card seat 63, a positioning end 64, a clamping end 65, a clamping rod 66, a clamping cylinder 67 and a fifth detection sensor 68. The fixed part of the flipping cylinder 61 is fixedly set on the first clamp table 3, the clamp seat 62 is fixedly set on the output part of the flipping cylinder 61, the card seat 63 is fixedly set on the clamp seat 62 and is used to install the fifth part 60, the positioning end 64 is fixedly set on the clamp seat 62 and cooperates with one end of the fifth part 60, the clamping end 65 is fixedly set on one end of the clamping rod 66 and cooperates with the other end of the fifth part 60, the middle part of the clamping rod 66 is hinged to the clamp seat 62, the other end of the clamping rod 66 is hinged to one end of the clamping cylinder 67, the other end of the clamping cylinder 67 is hinged to the clamp seat 62, and the fifth detection sensor 68 is fixedly set on the card seat 63 and cooperates with the fifth part 60. Among them, the flip cylinder 61, the pressing cylinder 67 and the fifth detection sensor 68 are all existing technologies. The solenoid valve controlling the flip cylinder 61, the solenoid valve controlling the pressing cylinder 67 and the fifth detection sensor 68 are all electrically connected to the control center. The fifth detection sensor 68 is used to detect whether the fifth part 60 exists on the fixture seat 62. The fixture seat 62, the clamp seat 63, the positioning end 64, the pressing end 65, the pressing rod 66 and the pressing cylinder 67 are used in conjunction to fix the fifth part 60 on the fixture seat 62, and the fifth part 60 is relaxed after welding. After the welding between the third part 58 and the fourth part 59 is completed, the flip cylinder 61 is controlled to press the fifth part 60 on the third part 58 for welding. After the welding is completed, the pressing cylinder 67 first relaxes the fifth part 60, and then controls the flip cylinder 61 to leave the fifth part 60.

[0056] In some embodiments, a safety protection plate 75 is fixedly provided on the loading frame 1, the first fixture table 3 and the second fixture table 4 are respectively provided on both sides of the safety protection plate 75, a protective cover 76 cooperating with the rotating seat 73 is fixedly provided on the lower side of the safety protection plate 75, and the base 72 and the rotating drive member 74 are both provided in the protective cover 76. In the welding process, a robot is used for welding, and workers are used to manually load and unload parts. The safety protection plate 75 is provided to isolate the light generated during welding to protect the eyes of the workers. There is mutual rotation between the base 72 and the rotating seat 73 to prevent workers from accidentally inserting their hands between the base 72 and the rotating seat 73 and causing hand injuries. The protective cover 76 is provided to protect the workers. Since the rotating drive member 74 generates heat when working, the heat dissipation openings provided on the protective cover 76 can effectively dissipate heat.

[0057] In some embodiments, two detection blocks 77 are arranged on the outer wall of the rotating seat 73, and the connecting line between the two detection blocks 77 passes through the axis of the rotating seat 73. Two sixth detection sensors 78 are arranged on the base 72, which are respectively matched with the two detection blocks 77, and a worker detection sensor 79 is arranged at the gate of the safe room 71. Among them, the sixth detection sensor 78 is a laser detection sensor in the prior art and is electrically connected to the control center, and the two sixth detection sensors 78 are respectively matched with the two detection blocks 77. When the rotating seat 73 rotates 180 degrees in the forward direction, one detection block 77 is matched with one sixth detection sensor 78, and when the rotating seat 73 rotates 180 degrees in the reverse direction, another detection block 77 is matched with another sixth detection sensor 78. When the detection block 77 is matched with the sixth detection sensor 78, the signal of the sixth detection sensor 78 is transmitted to the control center, and the control center controls the rotating drive member 74 to stop driving the rotating seat 73 to rotate, and the processing, welding and loading and unloading of parts are carried out when the rotating seat 73 stops. The worker detection sensor 79 is an infrared sensor in the prior art. The function of the worker detection sensor 79 is to confirm whether the operator has left the safety room 71. After leaving the safety room 71, the signal is transmitted to the control center, and the control center controls the rotating drive member 74 to drive the rotating seat 73 to rotate.

[0058] A battery box welding method, using a battery box laser CMT combined welding device, the welding method comprises the following steps:

[0059] (1) On the first fixture table 3, workers install welding parts on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13 and the second fixture assembly 6;

[0060] (2) After the installation is completed, the operator moves away from the loading frame 1, and then controls the first small clamp component 9, the second small clamp component 10, the third small clamp component 11, the fourth small clamp component 12, the first large clamp component 13 and the second clamp assembly 6 to clamp the welding parts, and then controls the rotary drive component 74 to drive the rotary seat 73 to rotate 180° horizontally on the base 72;

[0061] (3) starting the CMT welding robot 70 to weld the parts on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13 and the second fixture assembly 6. At the same time, on the second fixture table 4, a worker installs welding parts on the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the third large fixture component 18 and the fourth fixture assembly 8;

[0062] (4) When the welding of the parts on the first fixture table 3 is completed and the installation of the parts on the second fixture table 4 is completed, the operator moves away from the loading frame 1, controls the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the third large fixture component 18 and the fourth fixture assembly 8 to clamp the welding parts, and then controls the rotary drive component 74 to drive the rotary seat 73 to rotate horizontally on the base 72 in the opposite direction by 180°;

[0063] (5) Start the CMT welding robot 70 to weld the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the third large fixture component 18 and the fourth fixture assembly 8. At the same time, on the first fixture table 3, the worker installs the welded parts obtained by welding the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12 and the first large fixture component 13 into the second large fixture component 14, removes the parts on the second fixture assembly 6, and then installs the welded parts on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13 and the second fixture assembly 6;

[0064] (6) When the welding of the parts on the second fixture table 4 is completed and the installation of the parts on the first fixture table 3 is completed, the operator moves away from the loading frame 1, and then controls the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13, the second large fixture component 14 and the second fixture assembly 6 to clamp the welding parts, and then controls the rotary drive component 74 to drive the rotary seat 73 to rotate 180° horizontally in the positive direction on the base 72;

[0065] (7) Start the CMT welding robot 70 and the laser welding robot 69. The CMT welding robot 70 welds the parts on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13 and the second fixture assembly 6. The laser welding robot 69 welds the parts on the second large fixture component 14. At the same time, on the second fixture table 4, the workers install the welded parts on the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17 and the third large fixture component 18 on the fourth large fixture component 19, remove the welded parts on the fourth fixture assembly 8, and then the workers install the welded parts on the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the third large fixture component 18 and the fourth fixture assembly 8;

[0066] (8) When the welding of the parts on the first fixture table 3 is completed and the installation of the parts on the second fixture table 4 is completed, the operator moves away from the loading frame 1, controls the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the third large fixture component 18, the fourth large fixture component 19 and the fourth fixture assembly 8 to clamp the welding parts, and then controls the rotary drive component 74 to drive the rotary seat 73 to rotate horizontally on the base 72 in the opposite direction by 180°;

[0067] (9) Start the CMT welding robot 70 and the laser welding robot 69. The CMT welding robot 70 welds the parts on the fifth small fixture component 15, the sixth small fixture component 16, the seventh small fixture component 17, the third large fixture component 18 and the fourth fixture assembly 8. The laser welding robot 69 welds the parts on the fourth large fixture component 19. At the same time, on the first fixture table 3, the worker installs the welded parts obtained by welding the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12 and the first large fixture component 13 in the second large fixture component 14, removes the parts on the second fixture assembly 6, and then installs the welded parts on the first small fixture component 9, the second small fixture component 10, the third small fixture component 11, the fourth small fixture component 12, the first large fixture component 13 and the second fixture assembly 6;

[0068] (10) Repeat steps S6 to S9 for continuous production. The CMT welding robot 70 and the laser welding robot 69 return to their initial positions after each welding is completed, and are started again when welding is required on the first fixture table 3 or the second fixture table 4.

[0069] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "one end", "top", "middle", "the other end", "coaxial", "one side", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0070] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "setting", "installation", "connection", "fixation", "hinge" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0071] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A laser CMT combined welding device for a battery box, characterized in that: The invention comprises a loading frame (1), a positioner (2), a first fixture table (3), a second fixture table (4), a first fixture assembly (5), a second fixture assembly (6), a third fixture assembly (7), a fourth fixture assembly (8), a laser welding robot (69), a CMT welding robot (70), a safety room (71), a base (72), a rotating seat (73) and a rotating driving member (74), wherein the laser welding robot (69) and the CMT welding robot (70) are both fixedly arranged in the safety room (71), the base (72) is fixedly arranged in the safety room (71) and is located between the laser welding robot (69) and the door of the safety room (71), the rotating seat (73) is rotatably arranged on the base (72), the rotating driving member (74) is fixedly arranged on the base (72) and is used to drive the rotating seat (73) to rotate, and the The loading frame (1) is fixedly arranged on the rotating seat (73), and the first fixture table (3) and the second fixture table (4) are respectively arranged on both sides of the loading frame (1). The first fixture table (3) and the second fixture table (4) are respectively connected to the loading frame (1) through the positioner (2). The first fixture assembly (5) and the second fixture assembly (6) are respectively arranged on the two ends of the first fixture table (3), and the third fixture assembly (7) and the fourth fixture assembly (8) are respectively arranged on the two ends of the second fixture table (4). The first fixture assembly (5), the second fixture assembly (6), the third fixture assembly (7) and the fourth fixture assembly (8) are all coordinated with the CMT welding robot (70), and the first fixture assembly (5) and the third fixture assembly (7) are all coordinated with the laser welding robot (69).

2. The laser CMT combined welding equipment for battery box according to claim 1 is characterized in that: The first clamp component (5) comprises a first small clamp part (9), a second small clamp part (10), a third small clamp part (11), a fourth small clamp part (12), a first large clamp part (13) and a second large clamp part (14); the first small clamp part (9), the second small clamp part (10) and the first large clamp part (13) are arranged on the same side and the first large clamp part (13) is arranged between the first small clamp part (9) and the second small clamp part (10); the third small clamp part (11), the fourth small clamp part (12) and the second large clamp part (14) are arranged on the same side and the second large clamp part (14) is arranged between the third small clamp part (11) and the fourth small clamp part (12); the second small clamp part (10) and the fourth small clamp part (12) are arranged close to the second clamp component (6); The third clamp assembly (7) comprises a fifth small clamp component (15), a sixth small clamp component (16), a seventh small clamp component (17), a third large clamp component (18) and a fourth large clamp component (19); the third large clamp component (18) and the fourth large clamp component (19) are fixedly arranged on both sides of the middle of the second clamp platform (4); the sixth small clamp component (16) is fixedly arranged on the second clamp platform (4) and is located between the third large clamp component (18) and the fourth large clamp component (19); the fifth small clamp component (15) is fixedly arranged on the end of the second clamp platform (4); and the seventh small clamp component (17) is fixedly arranged on the second clamp platform (4) and is located between the third large clamp component (18) and the fourth clamp assembly (8); The first small clamp component (9), the second small clamp component (10), the third small clamp component (11), the fourth small clamp component (12), the fifth small clamp component (15), the sixth small clamp component (16), the seventh small clamp component (17), the first large clamp component (13) and the third large clamp component (18) all cooperate with the CMT welding robot (70), and the second large clamp component (14) and the fourth large clamp component (19) all cooperate with the laser welding robot (69).

3. The laser CMT combined welding equipment for battery box according to claim 2 is characterized in that: The first small clamp component (9), the second small clamp component (10), the third small clamp component (11), the fourth small clamp component (12), the fifth small clamp component (15), the sixth small clamp component (16) and the seventh small clamp component (17) all include a connecting seat (20), an adjusting seat (21), a first part seat (22), a first cylinder seat (23), a second cylinder seat (24), a first cylinder (25), a second cylinder (26), a third cylinder (27), a first clamping block (28), a second clamping block (29), a third clamping block (30), a fourth clamping block (31 ), a clamping plate (32) and a limit spring plate (33), the adjusting seat (21) is arranged on the lower end of the connecting seat (20), the first cylinder seat (23) is fixedly arranged on the lower end of the adjusting seat (21), the first part seat (22) is fixedly arranged on the upper end of the adjusting seat (21), the second cylinder seat (24) is fixedly arranged on the top of the connecting seat (20), the first cylinder (25) is fixedly arranged on the first cylinder seat (23) and the output end is hinged to the lower ends of the first clamping block (28) and the second clamping block (29), the first clamping block (28) and the first The middle parts of the two clamping blocks (29) are hinged to the ends of the first cylinder seat (23); the upper ends of the first clamping block (28) and the second clamping block (29) are respectively matched with the two ends of the first part (34) on the first part seat (22); the first part (34) is matched with a second part (35); the two sides of the second part (35) are respectively matched with one end of the third clamping block (30) and the fourth clamping block (31); the middle parts of the third clamping block (30) and the fourth clamping block (31) are both hinged to the second cylinder seat (24); the other end of the third clamping block (30) is An end of the fourth clamping block (31) is hinged to one end of the second cylinder (26), the other end of the fourth clamping block (31) is hinged to one end of the third cylinder (27), the other ends of the second cylinder (26) and the third cylinder (27) are hinged to the second cylinder seat (24), a clamping plate (32) cooperating with the second part (35) is arranged on the end of the fourth clamping block (31), a limiting spring plate (33) cooperating with the second part (35) is fixedly arranged on the second cylinder seat (24), and the limiting spring plate (33) and the third clamping block (30) are respectively arranged on both sides of the second part (35).

4. The laser CMT combined welding equipment for battery box according to claim 3 is characterized in that: A manual shifting rod (36) is fixedly arranged on the third clamping block (30) and the fourth clamping block (31); a first limiting spring piece (37) cooperating with the third clamping block (30) is arranged on one side of the second cylinder seat (24); a second limiting spring piece (38) cooperating with the fourth clamping block (31) is arranged on the other side of the second cylinder seat (24); a first detection sensor (39) cooperating with the first part (34) is arranged on the first part seat (22); and a second detection sensor (40) cooperating with the second part (35) is arranged on the second cylinder seat (24).

5. The laser CMT combined welding equipment for battery box according to claim 4 is characterized in that: The connecting seat (20) is hinged to the upper end of the adjusting seat (21); an adjusting block (41) is fixedly arranged on the lower end of the connecting seat (20); an adjusting screw (42) matched with the adjusting seat (21) is arranged on the adjusting block (41); the connecting seat (20) is provided with the adjusting groove (43); a fastening bolt threadedly connected with the adjusting seat (21) is arranged in the adjusting groove (43).

6. The laser CMT combined welding equipment for battery box according to claim 5, characterized in that: The second large clamp component (14) comprises a nut detection structure, and the nut detection structure comprises a detection bracket (44), a mounting sleeve (45), a limit sleeve (46), a detection rod (47), a detection spring (48), a limit ring (49) and a proximity switch (50). The mounting sleeve (45) is fixed on the first clamp table (3) through the detection bracket (44). The limit sleeve (46) is arranged in the upper end of the mounting sleeve (45). A sliding device is arranged in the limit sleeve (46). The detection rod (47) is provided, the upper end of the detection rod (47) passes through the limiting sleeve (46) and cooperates with the detection nut (51), the lower end of the detection rod (47) passes through the limiting ring (49) and cooperates with the proximity switch (50), the proximity switch (50) is fixedly arranged on the lower end of the mounting sleeve (45), and the detection spring (48) is sleeved on the detection rod (47) with one end pressing on the detection rod (47) and the other end pressing on the limiting ring (49).

7. The laser CMT combined welding equipment for battery box according to claim 6, characterized in that: The second clamping assembly (6) comprises a third part seat (52), a first clamping component (53), a second clamping component (54), a third clamping component (55), a third detection sensor (56) and a fourth detection sensor (57); the third part seat (52), the first clamping component (53), the second clamping component (54) and the third clamping component (55) are all fixedly arranged on the first clamping table (3); the first clamping component (53) fastens the third part (58) to the third part seat (52); the second clamping component (54) fastens the fourth part (59) to the third part (58); the third clamping component (55) fastens the fifth part (60) to the third part (58); the first clamping component (53) is provided with the third detection sensor (56) for detecting the third part (58); the second clamping component (54) is provided with the fourth detection sensor (57) for detecting the fourth part (59); The third clamping component (55) comprises a flip cylinder (61), a fixture seat (62), a clamping seat (63), a positioning end head (64), a clamping end head (65), a clamping rod (66), a clamping cylinder (67) and a fifth detection sensor (68); the fixing portion of the flip cylinder (61) is fixedly arranged on the first fixture table (3); the fixture seat (62) is fixedly arranged on the output portion of the flip cylinder (61); the clamping seat (63) is fixedly arranged on the fixture seat (62) and is used for installing the fifth part (60); the positioning end head (64) is fixedly arranged on the first fixture table (3); The clamp seat (62) is mounted on the clamp seat (62) and cooperates with one end of the fifth part (60). The clamping end head (65) is fixedly arranged on one end of the clamping rod (66) and cooperates with the other end of the fifth part (60). The middle part of the clamping rod (66) is hinged to the clamp seat (62). The other end of the clamping rod (66) is hinged to one end of the clamping cylinder (67). The other end of the clamping cylinder (67) is hinged to the clamp seat (62). The fifth detection sensor (68) is fixedly arranged on the clamp seat (63) and cooperates with the fifth part (60).

8. The laser CMT combined welding equipment for battery box according to claim 2, characterized in that: A safety protection plate (75) is fixedly arranged on the loading frame (1); the first clamping platform (3) and the second clamping platform (4) are respectively arranged on both sides of the safety protection plate (75); a protective cover (76) cooperating with the rotating seat (73) is fixedly arranged on the lower side of the safety protection plate (75); the base (72) and the rotating drive member (74) are both arranged in the protective cover (76).

9. The laser CMT combined welding equipment for battery box according to claim 2, characterized in that: Two detection blocks (77) are arranged on the outer wall of the rotating seat (73), and the connecting line between the two detection blocks (77) passes through the axis line of the rotating seat (73). Two sixth detection sensors (78) respectively matched with the two detection blocks (77) are arranged on the base (72), and a worker detection sensor (79) is arranged at the gate of the safety room (71).

10. A battery box welding method, using a battery box laser CMT combined welding device as claimed in any one of claims 2 to 9, characterized in that: The welding method comprises the following steps: S1: On the first fixture table (3), a worker installs welding parts on the first small fixture component (9), the second small fixture component (10), the third small fixture component (11), the fourth small fixture component (12), the first large fixture component (13) and the second fixture assembly (6); S2: After the installation is completed, the operator moves away from the loading frame (1), and then controls the first small clamp component (9), the second small clamp component (10), the third small clamp component (11), the fourth small clamp component (12), the first large clamp component (13) and the second clamp component (6) to clamp the welding parts, and then controls the rotary drive component (74) to drive the rotary seat (73) to rotate horizontally on the base (72) in the positive direction by 180°; S3: Start the CMT welding robot (70) to weld the parts on the first small fixture component (9), the second small fixture component (10), the third small fixture component (11), the fourth small fixture component (12), the first large fixture component (13) and the second fixture assembly (6); at the same time, on the second fixture table (4), a worker installs welding parts on the fifth small fixture component (15), the sixth small fixture component (16), the seventh small fixture component (17), the third large fixture component (18) and the fourth fixture assembly (8); S4: When the welding of the parts on the first fixture table (3) is completed and the installation of the parts on the second fixture table (4) is completed, the operator moves away from the loading frame (1), controls the fifth small fixture component (15), the sixth small fixture component (16), the seventh small fixture component (17), the third large fixture component (18) and the fourth fixture assembly (8) to clamp the welded parts, and then controls the rotary drive component (74) to drive the rotary seat (73) to rotate horizontally in the opposite direction by 180° on the base (72); S5: Start the CMT welding robot (70) to weld the fifth small fixture component (15), the sixth small fixture component (16), the seventh small fixture component (17), the third large fixture component (18) and the fourth fixture assembly (8). At the same time, on the first fixture table (3), a worker installs the welded parts obtained by welding the first small fixture component (9), the second small fixture component (10), the third small fixture component (11), the fourth small fixture component (12) and the first large fixture component (13) in the second large fixture component (14), removes the parts on the second fixture assembly (6), and then installs the welded parts on the first small fixture component (9), the second small fixture component (10), the third small fixture component (11), the fourth small fixture component (12), the first large fixture component (13) and the second fixture assembly (6); S6: When the welding of the parts on the second fixture table (4) is completed and the installation of the parts on the first fixture table (3) is completed, the operator moves away from the loading frame (1) and controls the first small fixture component (9), the second small fixture component (10), the third small fixture component (11), the fourth small fixture component (12), the first large fixture component (13), the second large fixture component (14) and the second fixture assembly (6) to clamp the welded parts, and then controls the rotary drive component (74) to drive the rotary seat (73) to rotate horizontally on the base (72) in the positive direction by 180°; S7: Start the CMT welding robot (70) and the laser welding robot (69), wherein the CMT welding robot (70) welds the parts on the first small fixture component (9), the second small fixture component (10), the third small fixture component (11), the fourth small fixture component (12), the first large fixture component (13) and the second fixture component (6), and the laser welding robot (69) welds the parts on the second large fixture component (14). At the same time, (4), a worker installs the welding parts on the fifth small clamp component (15), the sixth small clamp component (16), the seventh small clamp component (17) and the third large clamp component (18) onto the fourth large clamp component (19), removes the welding parts on the fourth clamp component (8), and then a worker installs the welding parts on the fifth small clamp component (15), the sixth small clamp component (16), the seventh small clamp component (17), the third large clamp component (18) and the fourth clamp component (8); S8: When the welding of the parts on the first fixture table (3) is completed and the installation of the parts on the second fixture table (4) is completed, the operator moves away from the loading frame (1), controls the fifth small fixture component (15), the sixth small fixture component (16), the seventh small fixture component (17), the third large fixture component (18), the fourth large fixture component (19) and the fourth fixture assembly (8) to clamp the welded parts, and then controls the rotary drive component (74) to drive the rotary seat (73) to rotate horizontally in the opposite direction by 180° on the base (72); S9: Start the CMT welding robot (70) and the laser welding robot (69), the CMT welding robot (70) welds the parts on the fifth small fixture component (15), the sixth small fixture component (16), the seventh small fixture component (17), the third large fixture component (18) and the fourth fixture component (8), and the laser welding robot (69) welds the parts on the fourth large fixture component (19). At the same time, on the first fixture table (3), the worker places the first small fixture component ( 9), the welded parts obtained by welding the second small clamp component (10), the third small clamp component (11), the fourth small clamp component (12) and the first large clamp component (13) are installed in the second large clamp component (14), the parts on the second clamp component (6) are removed, and then the welded parts are installed on the first small clamp component (9), the second small clamp component (10), the third small clamp component (11), the fourth small clamp component (12), the first large clamp component (13) and the second clamp component (6); S10: Repeat steps S6 to S9 to perform continuous production.

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