Automatic butt welding machine for metal plates

Abstract

The present invention relates to the technical field of welding machines, and in particular to an automatic welding machine for butting metal plates, wherein a second translation linear module and a column are fixed to the bottom of a protective outer frame; a rotating module is arranged on the column; a rotating drum is connected to the rotating module; a plurality of welding fixture assemblies are distributed circumferentially on the rotating drum; the rotating drum is arranged between a welding manipulator and the second translation linear module; a plurality of clamping claw modules are arranged on the welding fixture assembly; a second lifting linear module is connected to the second translation linear module; and a loading fixture is arranged on the second lifting linear module. When the present invention is used, welding and workpiece loading and unloading processes do not interfere with each other and can be carried out simultaneously, which greatly improves the continuity of plate welding and improves the welding processing efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of welding machines, and in particular to an automatic butt welding machine for metal plates. Background Art

[0002] Metal plate welding is to align and position two metal plates, and then use a welding machine to weld them at the joint between the two metal plates, and use the weld to connect the two metal plates into one. According to the process requirements, it is divided into internal seam welding and external seam welding. In the process of external seam welding, the two welding plates are usually placed on a jig to position and lock them, and then transported to the welding station to complete the welding.

[0003] The existing welding machines cannot load and prepare materials at the same time during welding. The next loading can only be carried out after the current welding is completed and the weldment is removed. Therefore, the loading, welding and unloading processes lack continuity, affecting the processing efficiency of the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic butt welding machine for metal plates in view of the defects and shortcomings of the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention discloses an automatic welding machine for butting metal sheets, comprising a protective outer frame and a welding robot arranged on the inner top wall of the protective outer frame; a second translation linear module and a column are fixed to the bottom of the protective outer frame; a rotating module is arranged on the column; a rotating drum is connected to the rotating module; a plurality of welding jig assemblies are distributed circumferentially on the rotating drum; the rotating drum is arranged between the welding robot and the second translation linear module; a plurality of clamping claw modules are arranged on the welding jig assembly; a second lifting linear module is connected to the second translation linear module; a loading jig is arranged on the second lifting linear module.

[0007] Furthermore, the welding jig assembly is composed of two welding jig bodies; the welding jig body includes a fixed plate; a support rod is fixed on the rotating cylinder; one end of the two fixed plates on the same welding jig assembly is hinged to the support rod through the same hinge shaft; the clamping claw module is arranged on the fixed plate; a support positioning assembly is arranged between the fixed plate and the rotating cylinder; a clamping claw linkage assembly is arranged on the fixed plate; the clamping claw modules are connected to the clamping claw linkage assembly; a clamping assembly for driving the clamping claw linkage assembly to move is arranged on the protective outer frame; the fixed plate is provided with a first avoidance groove on the side close to the support rod.

[0008] Furthermore, a fixing rod is fixed on the fixing plate; the supporting positioning assembly includes a sliding shaft; a guide sleeve is fixed on the rotating cylinder; a second sliding rod is slidably connected in the guide sleeve; the second sliding rod is coaxially arranged with the rotating cylinder; an inner sliding sleeve slidably connected to the sliding shaft is fixed on the rotating cylinder; a rocker rod is hinged on the fixing rod; the two rocker rods on the same welding jig assembly are hinged on the same sliding shaft; the end of the sliding shaft extending into the rotating cylinder is hinged with a second connecting rod; the end of the second connecting rod away from the sliding shaft is hinged on the rod body of the second sliding rod; a limiting bolt is threadedly connected to the guide sleeve; a plurality of positioning holes are arranged on the rod body of the second sliding rod; the positioning holes are arranged along the length direction of the second sliding rod; the diameter of the positioning hole is equal to the diameter of the limiting bolt.

[0009] Furthermore, the loading fixture includes a base plate; two loading plates are arranged on the base plate; one end of each loading plate is rotatably connected to the base plate through a rotating shaft; a second avoidance groove is opened on the side wall of the base plate; side blocks are arranged on the left and right sides of the base plate; an elastic support member is arranged at the bottom of the base plate; the elastic support member includes a roller bracket slidably connected to the base plate; a supporting spring is arranged between the roller bracket and the base plate; the two ends of the supporting spring are respectively pressed against the roller bracket and the base plate; a roller is rotatably connected to the roller bracket; the body of the roller is pressed against the bottom surface of the base plate; a third avoidance groove is arranged on the base plate; a plurality of lower support blocks are arranged on the side surface of the base plate; the lower support blocks on the two loading plates are staggered.

[0010] Furthermore, a second lifting slider is fixed on the roller bracket; a second lifting guide rail is slidably connected in the second lifting slider; the second lifting guide rail is fixed on the base plate; a second locking bolt is threadedly connected on the second lifting slider; and the end of the second locking bolt is pressed against the second lifting guide rail.

[0011] Furthermore, the lower support block is composed of a retaining ring, a screw and a nut threadedly connected to the screw; a through hole is provided on the loading plate; the diameter of the through hole is equal to the diameter of the screw; one end of the screw passes through the through hole and is fixedly connected to the retaining ring in the third avoidance groove; the nut is pressed against an end face of the loading plate away from the third avoidance groove.

[0012] Furthermore, the clamping jaw linkage assembly includes a sliding sleeve fixed on the fixed plate and a first sliding rod slidably connected to the sliding sleeve; the fixed plate is fixed with a first straight guide rail; the clamping jaw modules are distributed on both sides of the fixed plate; the clamping jaw modules are connected to a driving seat; the driving seats are slidably connected to the first straight guide rail; the driving seats on the same side are fixed to the same connecting rod; the connecting rod is hinged with a first connecting rod; the first connecting rod is hinged to the rod body of the first sliding rod at one end away from the connecting rod; a retaining ring is provided on the rod body of the first sliding rod; a first spring is sleeved on the rod body of the first sliding rod; the two ends of the first spring are respectively pressed on the sliding sleeve and the retaining ring; a spherical pressure block is provided at the end of the first sliding rod; the clamping assembly is used to press the spherical pressure block.

[0013] Furthermore, the clamping claw module includes a U-shaped clamp; the two inner side walls of the U-shaped clamp are respectively fixed with a rotating sleeve and an anti-slip plate; the rotating sleeve is rotatably connected to the fixed plate with a side surface of the clamping claw linkage assembly; a follower wheel is rotatably connected to the side wall of the U-shaped clamp; the driving seat is composed of a first slider slidably connected to the first straight guide rail and a cam seat fixed on the first slider; the first slider is fixed on the connecting rod; a cam groove is provided on the surface of the cam seat; the width of the cam groove is equal to the diameter of the follower wheel; the follower wheel is embedded in the cam groove; the cam seat is composed of an inclined groove section and a parallel section connected to the inclined groove section; the parallel section and the first straight guide rail are arranged parallel to each other.

[0014] Furthermore, the clamping assembly includes a first lifting guide rail, an clamping cylinder, a first lifting slider, an clamping pressure rod and a sliding plate; the first lifting guide rail is fixed on the protective outer frame; the sliding plate is fixed with a first lifting slider slidably connected to the first lifting guide rail; the protective outer frame is provided with a strip hole; the strip hole is inserted with a first locking bolt; the sliding plate is provided with a threaded hole; the first locking bolt is threadedly connected to the threaded hole; the head of the first locking bolt is pressed against the protective outer frame; one end of the clamping cylinder and one end of the clamping pressure rod are both hinged on the sliding plate; the other end of the clamping cylinder is hinged on the rod body of the clamping pressure rod.

[0015] Furthermore, the welding robot comprises a first translation linear module fixed to the inner top wall of the protective outer frame, a first lifting linear module connected to the first translation linear module, and a welding head module connected to the first lifting linear module.

[0016] After adopting the above structure, the beneficial effects of the present invention are as follows: the loading jig is used to position the plate to be welded; after the plate to be welded is placed on the loading jig, the second translation linear module drives the second lifting linear module and the loading jig to move, so that the loading jig is placed below the welding jig assembly; then the second lifting linear module is lifted upward to fit the plate on the loading jig to the welding jig assembly, and then the plate is clamped and positioned on the welding jig assembly through multiple clamping claw modules; the rotating module drives the welding jig assembly to rotate through the rotating drum, and the welding jig assembly with the plate to be welded is rotated to face the welding manipulator; and the finished welded product is rotated to the top of the loading jig, and the loading jig is lifted by the second lifting linear module to provide support for the finished welded product, the clamping claw module is released, the finished welded product is placed on the loading jig and the conveying and unloading is completed. This structure realizes that the welding process and the loading and unloading process of the workpiece do not interfere with each other, and can be carried out simultaneously, thereby improving the continuity and processing efficiency of the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a structural diagram of the welding manipulator and the clamping assembly of the present invention connected to the protective outer frame;

[0019] Figure 3 It is a structural diagram of the material carrier jig of the present invention connected to the second lifting linear module and the second translation linear module;

[0020] Figure 4 It is a structural diagram of the connection between the material loading fixture and the second lifting linear die of the present invention;

[0021] Figure 5 is a three-dimensional diagram of the material loading fixture of the present invention;

[0022] Figure 6 It is a front view of the material loading fixture of the present invention;

[0023] Figure 7 This is a structural diagram of the present invention after the protective outer frame is disassembled;

[0024] Figure 8 It is the internal structure diagram of the rotary drum of the present invention;

[0025] Fig. 9 is a structural diagram of a welding jig assembly of the present invention;

[0026] Fig.10 It is the structural diagram of the welding fixture body;

[0027] Fig.11 is a structural diagram of the cam seat of the present invention;

[0028] Fig.12is a structural diagram of the clamping claw module of the present invention;

[0029] Description of reference numerals:

[0030] 1. Welding fixture body; 101. Fixing rod; 102. Cam seat; 10201. Bevel groove section;

[0031] 10202, parallel section; 103, first straight guide rail; 104, first slider; 105, connecting rod;

[0032] 106, fixed plate; 10601, first avoidance groove; 107, first sliding rod; 10701, retaining ring;

[0033] 10702, spherical pressure block; 10703, limit stopper; 108, sliding sleeve; 109, first spring;

[0034] 1010, first connecting rod;

[0035] 2. Welding manipulator; 201. Welding head module; 202. First lifting linear module;

[0036] 203, first translation linear module;

[0037] 3. Clamp opening assembly; 301. First lifting guide rail; 302. Clamp opening cylinder; 303. First lifting slide block;

[0038] 304, clamping rod; 305, sliding plate; 306, first locking bolt;

[0039] 4. Material loading fixture; 401. Material loading plate; 40101. Second avoidance groove; 40102. Side stopper;

[0040] 40103, third avoidance groove; 402, nut; 403, screw; 40301, retaining ring; 404, bottom plate;

[0041] 405, roller; 406, roller bracket; 407, second locking bolt; 408, second lifting slide block;

[0042] 409, second lifting guide rail; 4010, supporting spring; 4011, rotating shaft;

[0043] 5. The second lifting linear module; 6. The second translation linear module;

[0044] 7. Protective outer frame; 701. Strip holes;

[0045] 8. rotating drum; 801. guide sleeve; 802. support rod;

[0046] 9. Clamping claw module; 901. U-shaped clamping plate; 90101. Anti-skid plate; 902. Follower wheel;

[0047] 903, rotating sleeve;

[0048] 10. Rotating module; 11. Column;

[0049] 12. second sliding rod; 1201. handle; 1202. positioning hole;

[0050] 13. Second connecting rod; 14. Sliding shaft; 15. Inner sliding sleeve; 16. Limit bolt; 17. Rocker arm. DETAILED DESCRIPTION

[0051] The present invention will be further described below in conjunction with the accompanying drawings.

[0052] like Figures 1 to 12 As shown, an automatic metal sheet butt welding machine described in the present invention comprises a protective outer frame 7 and a welding manipulator 2 arranged on the inner top wall of the protective outer frame 7; a second translation linear module 6 and a column 11 are fixed to the bottom of the protective outer frame 7; a rotating module 10 is arranged on the column 11; a rotating drum 8 is connected to the rotating module 10; a plurality of welding jig assemblies are distributed circumferentially on the rotating drum 8; the rotating drum 8 is arranged between the welding manipulator 2 and the second translation linear module 6; a plurality of clamping claw modules 9 are arranged on the welding jig assembly; a second lifting linear module 5 is connected to the second translation linear module 6; a loading jig 4 is arranged on the second lifting linear module 5;

[0053] The number of welding jig assemblies can be two, three or four;

[0054] The second lifting linear module 5 and the second translation linear module 6 are both linear modules, which are essentially the same as the prior art, so they are not described in detail; the power of the second lifting linear module 5 is a cylinder; the power of the second translation linear module 6 is a motor, a screw and a screw nut structure; the second translation linear module 6 drives the second lifting linear module 5 and the material carrier 4 to translate, and the second lifting linear module 5 drives the material carrier 4 to move up and down;

[0055] The rotating module 10 is composed of a motor and a reduction box. The motor drives the reduction box to rotate the rotating drum 8 around its own axis, so as to realize the rotation of the welding fixture assembly around the axis of the rotating drum 8.

[0056] The loading jig 4 is used to position the plate to be welded; after the plate to be welded is placed on the loading jig 4, the second lifting linear module 5 and the loading jig 4 are driven to move by the second translation linear module 6, so that the loading jig 4 is placed under the welding jig assembly; the second lifting linear module 5 is lifted upward to fit the plate on the loading jig 4 to the welding jig assembly, and then the plate is clamped and positioned on the welding jig assembly by multiple clamping claw modules 9; the rotating module 10 drives the welding jig assembly to rotate through the rotating drum 8, and rotates the welding jig assembly with the plate to be welded to face the welding robot 2; the welding jig assembly loaded with the finished welding product is rotated to the top of the loading jig 4, and the loading jig 4 is lifted by the second lifting linear module 5 to provide support for the finished welding product, the clamping claw module 9 is released, the finished welding product is placed on the loading jig 4, and transported out for external unloading.

[0057] Through this structure, while the welding robot 2 is welding the plate to be welded on one of the welding jig assemblies, the finished welded product is transported to the outside for unloading and reloading through another welding jig assembly, so that the welding process and the workpiece loading and unloading process do not interfere with each other and can be carried out simultaneously, thereby improving the continuity and efficiency of welding.

[0058] As a preferred embodiment of the present invention, the welding jig assembly is composed of two welding jig bodies 1; the welding jig body 1 includes a fixed plate 106; a support rod 802 is fixed on the rotating cylinder 8; one end of the two fixed plates 106 on the same welding jig assembly is hinged on the support rod 802 through the same hinge shaft; the clamping claw module 9 is arranged on the fixed plate 106; a support positioning assembly is arranged between the fixed plate 106 and the rotating cylinder 8; a clamping claw linkage assembly is arranged on the fixed plate 106; the clamping claw modules 9 are connected to the clamping claw linkage assembly; a clamping assembly 3 for driving the clamping claw linkage assembly to move is arranged on the protective outer frame 7; the fixed plate 106 is provided with a first avoidance groove 10601 on one side close to the support rod 802;

[0059] A support rod 802 is fixed on both sides of each welding fixture body 1; both ends of the fixing plate 106 are connected to the hinge shaft; after the plate to be welded is positioned by the loading fixture 4, it is docked and positioned with the fixing plate 106 and clamped and fixed by the clamping claw module 9; the clamping claw linkage assembly can simultaneously drive the clamping claw module 9 to open and release the clamp;

[0060] The supporting and positioning assembly cooperates with the hinge shaft to fix the fixed plate 106 on the rotating drum 8; the two fixed plates 106 on the same welding fixture assembly fix the plates respectively, and the welding angle of the two plates is consistent with the angle formed by the two fixed plates 106; the first avoidance grooves 10601 of the fixed plates 106 on both sides are aligned with the weld, so that the welding position is hollowed out, thereby improving the heat dissipation speed of the weld.

[0061] As a preferred embodiment of the present invention, a fixing rod 101 is fixed on the fixing plate 106; the supporting positioning assembly includes a sliding shaft 14; a guide sleeve 801 is fixed on the rotating cylinder 8; a second sliding rod 12 is slidably connected in the guide sleeve 801; the second sliding rod 12 is coaxially arranged with the rotating cylinder 8; an inner sliding sleeve 15 slidably connected to the sliding shaft 14 is fixed on the rotating cylinder 8; a swing rod 17 is hinged on each of the fixing rods 101; the two swing rods 17 on the same welding jig assembly are hinged on the same sliding shaft 1 4; the end of the sliding shaft 14 extending into the rotating drum 8 is hinged with a second connecting rod 13; the end of the second connecting rod 13 away from the sliding shaft 14 is hinged on the rod body of the second sliding rod 12; the guide sleeve 801 is threadedly connected with a limiting bolt 16; a plurality of positioning holes 1202 are arranged on the rod body of the second sliding rod 12; the positioning holes 1202 are arranged along the length direction of the second sliding rod 12; the diameter of the positioning holes 1202 is equal to the diameter of the limiting bolt 16; a handle 1201 is fixed on the second sliding rod 12;

[0062] After the limiting bolt 16 is rotated on the guide sleeve 801, it can extend into or pull out of the positioning hole 1202; after the limiting bolt 16 is inserted into different positioning holes 1202, the length of the second sliding rod 12 extending into the interior of the rotating drum 8 can be adjusted; the corresponding sliding shaft 14 is synchronously pushed to slide on the inner sliding sleeve 15 through the second connecting rod 13; through the lifting and lowering of the sliding shaft 14, the rocker arm 17 can drive the two fixed plates 106 to flip around the hinge axis, and the angle between the two fixed plates 106 can be adjusted, thereby realizing the angle adjustment between the two welding plates. After the limiting bolt 16 is inserted into different positioning holes 1202, the angles between the two fixing plates 106 can be 60 degrees, 90 degrees, 120 degrees and 135 degrees respectively; of course, by adding corresponding holes on the second sliding rod 12, the two fixing plates 106 can be made to form other corresponding angles; the two fixing plates 106 on each welding fixture assembly can be adjusted synchronously to improve the adjustment efficiency, and the adjustment angle variables of each welding fixture assembly are consistent, ensuring that the welding angles of each welding fixture assembly are consistent;

[0063] During the adjustment process, the position of the hinge shaft remains unchanged, the two fixed plates 106 are hinged on the same hinge shaft, and the fixed plates rotate around the hinge shaft, which can ensure that the height change of the welding position before and after adjustment is minimized, and there is no need to adjust the height of the second lifting linear module to lift the loading fixture 4 again.

[0064] As a preferred embodiment of the present invention, the material loading fixture 4 includes a bottom plate 404; two material loading plates 401 are arranged on the bottom plate 404; one end of each material loading plate 401 is rotatably connected to the bottom plate 404 via a rotating shaft 4011; a second avoidance groove 40101 is provided on the side wall of the bottom plate 404; side blocks 40102 are arranged on the left and right sides of the bottom plate 404; an elastic support member is arranged at the bottom of the bottom plate 404; the elastic support member includes a roller bracket 406 slidably connected to the bottom plate 404; A support spring 4010 is provided between the roller bracket 406 and the bottom plate 404; the two ends of the support spring 4010 are respectively pressed against the roller bracket 406 and the bottom plate 404; a roller 405 is rotatably connected to the roller bracket 406; the body of the roller 405 is pressed against the bottom surface of the bottom plate 404; a third avoidance groove 40103 is provided on the bottom plate 404; a plurality of lower support blocks are provided on the side surface of the bottom plate 404; the lower support blocks on the two loading plates 401 are staggered;

[0065] The second avoidance groove 40101 is used for avoiding the clamping claw module 9; and a notch for avoiding the side block 40102 is also provided on the fixed plate 106; the first avoidance groove 10601 can avoid the retaining ring 40301;

[0066] The support springs 4010 generate an upward thrust on the two material carriers 401, so that the two support springs 4010 are arranged in a "V" shape; the external manipulator puts a plate into each material carrier 401 respectively; the plate is positioned by the bottom support block and the side blocks 40102 on both sides, and the bottom of the plate is attached to the support block under the gravity of the plate itself; this inclined arrangement of the material carrier 401 allows the plate to be automatically positioned on the material carrier 401 due to the gravity, which can reduce the feeding accuracy of the plate;

[0067] After the loading plate 401 is loaded with the plate, the angle between the two loading plates 401 is less than or equal to the angle formed by the two fixed plates 106 on the welding jig assembly; when the second lifting linear module 5 lifts the lifting plate upward toward the fixed plate 106, the pressure generated by the surface of the fixed plate 106 on the surface of the plate causes the two loading plates 401 to overcome the elastic force of the supporting spring 4010 and open the angle, so that the angle of the two loading plates 401 is automatically adapted to the angle formed by the two fixed plates 106; after welding is completed, the elastic support of the supporting spring 4010 can realize the elastic contact between the fixed plate 106 and the plate when loading, thereby reducing the impact force on the welding jig assembly, and the plate is simultaneously loaded on the welding jig assembly through the two loading plates 401, thereby improving the loading efficiency.

[0068] As a preferred embodiment of the present invention, a second lifting slider 408 is fixed on the roller bracket 406; a second lifting guide rail 409 is slidably connected in the second lifting slider 408; the second lifting guide rail 409 is fixed on the bottom plate 404; a second locking bolt 407 is threadedly connected on the second lifting slider 408; the end of the second locking bolt 407 is pressed against the second lifting guide rail 409;

[0069] After the second locking bolt 407 is loosened, the height of the roller bracket 406 can be adjusted. When the second locking bolt 407 is locked, the roller bracket 406 and the roller 405 can be fixed on the bottom plate 404, so that the angle of the two carrier plates 401 is fixed. This structure is used for welding some plates with poor bending resistance or thin plates to prevent deformation caused by the two carrier plates 401 after welding, and better protect the weldment.

[0070] As a preferred embodiment of the present invention, the lower support block is composed of a retaining ring 40301, a screw rod 403 and a nut 402 threadedly connected to the screw rod 403; a through hole is provided on the carrier plate 401; the diameter of the through hole is equal to the diameter of the screw rod 403; one end of the screw rod 403 passes through the through hole and is fixedly connected to the retaining ring 40301 in the third avoidance groove 40103; the nut 402 is pressed against an end face of the carrier plate 401 away from the third avoidance groove 40103;

[0071] The material carrier plate 401 is tilted, and the plate is positioned left and right by the side blocks 40102 on both sides. Under the action of the plate's own gravity, one edge of the plate fits on the retaining ring 40301, so that the plate is positioned on the material carrier plate 401. Similarly, because the material carrier plate 401 is tilted, the retaining ring 40301 is equivalent to a counterweight, so that the screw rod 403 is pulled toward one side of the retaining ring 40301 in the through hole, and the nut 402 is used as the upper limit of the screw rod 403 to position the screw rod 403 and the retaining ring 40301. By rotating the nut 402, the limit position of the screw rod 403 can be changed, and the position of the retaining ring 40301 can be fine-tuned, so that the gap between the two plates can be adjusted, and the width of the weld can be adjusted.

[0072] As a preferred embodiment of the present invention, the clamping claw linkage assembly includes a sliding sleeve 108 fixed on the fixed plate 106, and a first sliding rod 107 slidably connected to the sliding sleeve 108; the fixed plate 106 is fixed with a first straight guide rail 103; the clamping claw modules 9 are distributed on both sides of the fixed plate 106; the clamping claw modules 9 are connected to a driving seat; the driving seats are slidably connected to the first straight guide rail 103; the driving seats on the same side are fixed to the same connecting rod 105; the connecting rod 105 is A first connecting rod 1010 is hinged; one end of the first connecting rod 1010 away from the connecting rod 105 is hinged on the rod body of the first sliding rod 107; a retaining ring 10701 is arranged on the rod body of the first sliding rod 107; a first spring 109 is sleeved on the rod body of the first sliding rod 107; the two ends of the first spring 109 are respectively pressed on the sliding sleeve 108 and the retaining ring 10701; a spherical pressing block 10702 is arranged at the end of the first sliding rod 107; the clamping assembly 3 is used to press the spherical pressing block 10702;

[0073] A limit stopper 10703 is provided at one end of the first sliding rod 107 away from the spherical pressing block 10702, which is used to limit the first sliding rod 107 from further extending outward, and prevent the first sliding rod 107 from loosening from the sliding sleeve 108, so that the extension amount of the first sliding rod 107 in a non-pressurized state is fixed; when the spherical pressing block 10702 is not pressed by the clamping assembly 3, the elastic force of the first spring 109 pushes the first sliding rod 107 to extend outward toward one end of the spherical pressing block 10702, and driven by the connecting rods 105 on both sides, the first connecting rods 1010 on both sides pull the connecting rods 105 on both sides to move synchronously, and the clamping claw module 9 clamps and fixes the plate on the fixed plate 106;

[0074] When the welded workpiece needs to be loosened from the welding fixture assembly, the clamping assembly 3 applies pressure to the spherical pressure block 10702, so that the first sliding rod 107 overcomes the elastic force of the first spring 109 and slides along the sliding sleeve 108; the first connecting rods 1010 on both sides push the connecting rod 105 in the opposite direction so that the clamping claw module 9 releases the clamping of the plate; the entire welding process does not require additional power-driven clamping.

[0075] As a preferred embodiment of the present invention, the clamping claw module 9 includes a U-shaped clamping plate 901; the two inner side walls of the U-shaped clamping plate 901 are respectively fixed with a rotating sleeve 903 and an anti-slip plate 90101; the rotating sleeve 903 is rotatably connected to the fixed plate 106 with the surface of one side of the clamping claw linkage assembly; the side wall of the U-shaped clamping plate 901 is rotatably connected with a follower wheel 902; the driving seat is composed of a first slider 104 slidably connected to the first straight guide rail 103 and a cam seat 102 fixed on the first slider 104; the first slider 104 is fixed on the connecting rod 105; a cam groove is arranged on the surface of the cam seat 102; the width of the cam groove is equal to the diameter of the follower wheel 902; the follower wheel 902 is embedded in the cam groove; the cam seat 102 is composed of an inclined groove section 10201 and a parallel section 10202 connected to the inclined groove section 10201; the parallel section 10202 and the first straight guide rail 103 are arranged parallel to each other;

[0076] The anti-skid plate 90101 is fixed on the U-shaped clamping plate 901 by bolt connection. According to the different thickness of the plate, the anti-skid plate 90101 of the corresponding height can be replaced to ensure that the plate can be stably clamped; the anti-skid plate 90101 is made of anti-skid material and has no essential difference from the existing technology;

[0077] When the spherical pressure block 10702 is not pressed, the first sliding rod 107 pushes the connecting rod 105, so that the follower wheel 902 slides into the parallel section 10202. In this state, the U-shaped clamp 901 flips over the surface of the fixed plate 106 with the plate, and the anti-slip plate 90101 presses and fixes the plate on the fixed plate 106. The U-shaped clamping plate 901 is turned around the rotating sleeve 903 to release the clamping force of the plate.

[0078] As a preferred embodiment of the present invention, the clamping assembly 3 includes a first lifting guide rail 301, a clamping cylinder 302, a first lifting slider 303, a clamping pressure rod 304 and a sliding plate 305; the first lifting guide rail 301 is fixed on the protective outer frame 7; the sliding plate 305 is fixed with a first lifting slider 303 slidably connected to the first lifting guide rail 301; the protective outer frame 7 is provided with a strip hole 701; the strip hole 701 is inserted with a first locking bolt 306; a threaded hole is provided on the sliding plate 305; the first locking bolt 306 is threadedly connected to the threaded hole; the head of the first locking bolt 306 is pressed against the protective outer frame 7; one end of the clamping cylinder 302 and one end of the clamping pressure rod 304 are both hinged on the sliding plate 305; the other end of the clamping cylinder 302 is hinged on the rod body of the clamping pressure rod 304;

[0079] The clamping cylinder 302 is a retractable cylinder; the expansion and contraction of the clamping cylinder 302 can drive the first lifting slider 303 to flip, and the rod body of the clamping pressure rod 304 is used to press the spherical pressure block 10702, so that the first sliding rod 107 slides; when the rotating drum 8 rotates, the clamping pressure rod 304 flips to a position where it does not hinder the rotation of the welding fixture assembly.

[0080] The entire clamping assembly 3 is locked on the protective outer frame 7 by the first locking bolt 306; after loosening the first locking bolt 306, the clamping assembly 3 can be moved up and down to match the pressing height of the spherical pressure block 10702, ensuring that after the angle of the welding fixture assembly is adjusted, the spherical pressure block 10702 is still on the swing path of the clamping pressure rod 304.

[0081] As a preferred embodiment of the present invention, the welding robot 2 includes a first translation linear module 203 fixed to the inner top wall of the protective outer frame 7, a first lifting linear module 202 connected to the first translation linear module 203, and a welding head module 201 connected to the first lifting linear module 202;

[0082] The welding head module 201 has no essential difference from the prior art, so it is not described in detail; the first lifting linear module 202 can adjust the welding height of the welding head module 201, and the first translation linear module 203 can drive the first lifting linear module 202 and the welding head module 201 to translate for welding.

[0083] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A metal sheet butt automatic welding machine, characterized in that: It comprises a protective outer frame and a welding manipulator arranged on the inner top wall of the protective outer frame; a second translation linear module and a column are fixed to the bottom of the protective outer frame; a rotating module is arranged on the column; a rotating drum is connected to the rotating module; a plurality of welding jig assemblies are distributed circumferentially on the rotating drum; the rotating drum is arranged between the welding manipulator and the second translation linear module; a plurality of clamping claw modules are arranged on the welding jig assembly; a second lifting linear module is connected to the second translation linear module; a loading jig is arranged on the second lifting linear module; The welding jig assembly is composed of two welding jig bodies; the welding jig body includes a fixed plate; a support rod is fixed on the rotating drum; one end of the two fixed plates on the same welding jig assembly is hinged on the support rod through the same hinge shaft; the clamping claw module is arranged on the fixed plate; a support positioning assembly is arranged between the fixed plate and the rotating drum; a clamping claw linkage assembly is arranged on the fixed plate; the clamping claw modules are connected to the clamping claw linkage assembly; the protective outer frame is provided with a clamping assembly for driving the clamping claw linkage assembly to move ; The fixing plate is provided with a first avoidance groove on one side close to the support rod; the loading fixture comprises a bottom plate; two loading plates are arranged on the bottom plate; one end of each loading plate is rotatably connected to the bottom plate through a rotating shaft; a second avoidance groove is provided on the side wall of the bottom plate; side blocks are arranged on the left and right sides of the bottom plate; an elastic support member is arranged at the bottom of the bottom plate; the elastic support member comprises a roller bracket slidably connected to the bottom plate; a support spring is arranged between the roller bracket and the bottom plate; the two ends of the support spring are respectively pressed against the roller bracket and the bottom plate The bottom plate is described; a roller is rotatably connected to the roller bracket; the body of the roller is pressed against the bottom surface of the bottom plate; a third avoidance groove is provided on the bottom plate; a plurality of lower support blocks are provided on the side surface of the bottom plate; the lower support blocks on the two loading plates are staggered; a second lifting slider is fixed on the roller bracket; a second lifting guide rail is slidably connected in the second lifting slider; the second lifting guide rail is fixed to the bottom plate; a second locking bolt is threadedly connected to the second lifting slider; the end of the second locking bolt is pressed against the second lifting guide rail.

2. The automatic metal plate butt welding machine according to claim 1, characterized in that: A fixing rod is fixed on the fixing plate; the supporting positioning assembly includes a sliding shaft; a guide sleeve is fixed on the rotating cylinder; a second sliding rod is slidably connected in the guide sleeve; the second sliding rod is coaxially arranged with the rotating cylinder; an inner sliding sleeve slidably connected to the sliding shaft is fixed on the rotating cylinder; a rocker rod is hinged on the fixing rod; the two rocker rods on the same welding jig assembly are hinged on the same sliding shaft; the end of the sliding shaft extending into the rotating cylinder is hinged with a second connecting rod; the end of the second connecting rod away from the sliding shaft is hinged on the rod body of the second sliding rod; a limiting bolt is threadedly connected to the guide sleeve; a plurality of positioning holes are arranged on the rod body of the second sliding rod; the positioning holes are arranged along the length direction of the second sliding rod; the diameter of the positioning hole is equal to the diameter of the limiting bolt.

3. The automatic butt welding machine for metal plates according to claim 1, characterized in that: The lower support block is composed of a retaining ring, a screw and a nut threadedly connected to the screw; a through hole is provided on the carrier plate; the diameter of the through hole is equal to the diameter of the screw; one end of the screw passes through the through hole and is fixedly connected to the retaining ring in the third avoidance groove; the nut is pressed against an end face of the carrier plate away from the third avoidance groove.

4. The automatic butt welding machine for metal plates according to claim 1, characterized in that: The clamping claw linkage assembly includes a sliding sleeve fixed on the fixed plate and a first sliding rod slidably connected to the sliding sleeve; a first straight guide rail is fixed on the fixed plate; the clamping claw modules are distributed on both sides of the fixed plate; a driving seat is connected to the clamping claw modules; the driving seats are slidably connected to the first straight guide rail; the driving seats on the same side are fixed to the same connecting rod; a first connecting rod is hinged on the connecting rod; the first connecting rod is hinged on the rod body of the first sliding rod at one end away from the connecting rod; a retaining ring is provided on the rod body of the first sliding rod; a first spring is sleeved on the rod body of the first sliding rod; the two ends of the first spring are respectively pressed on the sliding sleeve and the retaining ring; a spherical pressure block is provided at the end of the first sliding rod; the clamping assembly is used to press the spherical pressure block.

5. The automatic butt welding machine for metal plates according to claim 4, characterized in that: The clamping claw module includes a U-shaped clamp; the two inner side walls of the U-shaped clamp are respectively fixed with a rotating sleeve and an anti-slip plate; the rotating sleeve is rotatably connected to the surface of the fixed plate with the clamping claw linkage assembly; a follower wheel is rotatably connected to the side wall of the U-shaped clamp; the driving seat is composed of a first slider slidably connected to the first straight guide rail and a cam seat fixed on the first slider; the first slider is fixed on the connecting rod; a cam groove is provided on the surface of the cam seat; the width of the cam groove is equal to the diameter of the follower wheel; the follower wheel is embedded in the cam groove; the cam seat is composed of an inclined groove section and a parallel section connected to the inclined groove section; the parallel section and the first straight guide rail are arranged parallel to each other.

6. The automatic butt welding machine for metal plates according to claim 4, characterized in that: The clamping assembly includes a first lifting guide rail, an clamping cylinder, a first lifting slider, an clamping pressure rod and a sliding plate; the first lifting guide rail is fixed to the protective outer frame; the sliding plate is fixed with a first lifting slider slidably connected to the first lifting guide rail; the protective outer frame is provided with a strip hole; the strip hole is inserted with a first locking bolt; the sliding plate is provided with a threaded hole; the first locking bolt is threadedly connected to the threaded hole; the head of the first locking bolt is pressed against the protective outer frame; one end of the clamping cylinder and one end of the clamping pressure rod are both hinged on the sliding plate; the other end of the clamping cylinder is hinged on the rod body of the clamping pressure rod.

7. The automatic metal plate butt welding machine according to claim 1, characterized in that: The welding robot comprises a first translation linear module fixed to the inner top wall of the protective outer frame, a first lifting linear module connected to the first translation linear module, and a welding head module connected to the first lifting linear module.

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