A welding device and usage method for an assembled light steel frame

Abstract

The present invention relates to the technical field of light steel frame processing. Specifically, it relates to a welding device for prefabricated light steel frames, which includes a housing, a vertical plate, a connecting plate, a first mounting plate, etc. A vertical plate is fixedly connected inside the housing. A placement groove is formed on the upper surface of the vertical plate. Two strip-shaped holes are formed on the upper surface of the vertical plate. A connecting plate is fixedly connected to the rear side surface of the housing. A first mounting plate is fixedly connected to the connecting plate. The welding device for prefabricated light steel frames obtained by the above design of the present invention welds the connection points of the triangular roof truss. This not only saves a large amount of manpower, but also can control two welding torches to weld the connection points of the triangular roof truss simultaneously, improving the welding efficiency. Moreover, there is no need to turn over the triangular roof truss. While simplifying the steps, it does not affect the welding quality of the triangular roof truss, and there is no need to reserve sufficient space for turning over the triangular roof truss.

Description

Technical Field

[0001] The present invention relates to the technical field of light steel frame processing, and in particular, to a welding device and a using method for an assembled light steel frame. Background Art

[0002] An assembled light steel frame is a modern building method. It uses prefabricated light steel frames produced and processed in a factory, and then transports them to the construction site for assembly and erection to form a complete building structure system.

[0003] A light steel frame refers to a support frame formed by connecting multiple light steels through welding, riveting or bolt connection; the light steel frame includes triangular roof trusses and trusses, etc., and the triangular roof truss is composed of a receiving square pipe, a V-shaped square pipe and a support square pipe, as Figure 9 shown;

[0004] In the prior art, welding the triangular roof truss manually not only takes a long time, has low work efficiency, but also requires a large amount of manpower. While welding the triangular roof truss with existing equipment, although it does not require a large amount of manpower, each time it can only weld a single side of the triangular roof truss, and the triangular roof truss needs to be flipped by one week and then its other side is welded. This not only takes a large amount of time, but also requires a large site to install the existing equipment. Summary of the Invention

[0005] The purpose of the present invention is to overcome the disadvantages in the prior art that when welding the triangular roof truss manually, it not only takes a long time, has low work efficiency, but also requires a large amount of manpower, and when welding the triangular roof truss with existing equipment, although it does not require a large amount of manpower, during the welding process, the triangular roof truss needs to be turned over, which not only takes a large amount of time, but also requires a large site to install the existing equipment, and provides a welding device which can fix the triangular roof truss in a vertical state, weld the joints on the triangular roof truss, simplify the steps while not affecting the welding quality of the 8-triangular roof truss, and also does not require reserving enough space for turning over the 8-triangular roof truss.

[0006] Another object of the present invention is to provide a welding device for an assembled light steel frame having the above functions.

[0007] Embodiments of the present invention are achieved through the following technical solutions: A welding device for an assembled light steel frame includes a housing, a vertical plate, a connecting plate, and a first mounting plate; a vertical plate is fixedly connected inside the housing; a placement groove is formed on the upper surface of the vertical plate; two strip-shaped holes are formed on the upper surface of the vertical plate; a connecting plate is fixedly connected to the rear side of the housing; a first mounting plate is fixedly connected to the connecting plate; it further includes a limiting frame, a first limiting block, a specified bolt, a clamping assembly, an adjusting assembly, a power assembly, a moving assembly, and a welding assembly; a limiting frame is fixedly connected to the lower surface of the first mounting plate; a protruding portion is provided on the limiting frame; the lower part of the limiting frame is connected to the upper surface of the vertical plate, and the limiting frame is located behind the placement groove; a first limiting block is slidably arranged in the left part of the placement groove; one specified bolt is arranged in each strip-shaped hole, and the two specified bolts are fixedly connected to the first limiting block; a clamping assembly for clamping a triangular roof truss is connected to the first mounting plate; the front and rear parts of the vertical plate are jointly connected with an adjusting assembly; one power assembly is connected to the front and rear parts of the adjusting assembly respectively; one moving assembly is connected to each power assembly; one welding assembly for fixedly connecting the triangular roof truss is connected to each moving assembly; the adjusting assembly is used to adjust the orientation position of the power assembly and the welding assembly; the power assembly is used to drive the welding assembly to move left or right.

[0008] Optionally, the clamping assembly includes multiple sections of push rods, a limiting plate, a U-shaped plate I, a pressing plate, a second limiting block, a first electric push rod, and a pushing block; several multi-section push rods distributed in a rectangle are fixedly connected to the first mounting plate; the telescopic parts of all the multi-section push rods are jointly fixedly connected to a limiting plate; a rectangular sliding groove is formed on the limiting plate; a U-shaped plate I is slidably arranged in the rectangular sliding groove; two limiting grooves are formed on the first mounting plate; a limiting post is arranged in each limiting groove; the U-shaped plate I is slidably arranged in the two limiting grooves; two vertical sliding grooves are formed on the U-shaped plate I; each of the two limiting posts is slidably arranged in one vertical sliding groove; a pressing plate is fixedly connected to the lower part of the U-shaped plate I; two second limiting blocks are fixedly connected to the rear side of the pressing plate, and the two second limiting blocks are symmetrically distributed left and right; a first electric push rod is fixedly connected to the upper surface of the first mounting plate; the telescopic part of the first electric push rod is fixedly connected to a pushing block, and the pushing block is located in front of the U-shaped plate I; a groove is formed on the pushing block.

[0009] Optionally, the lower part of the limiting frame and the pressing plate are both wavy.

[0010] Optionally, the adjustment component includes a multi-stage hydraulic rod, a second mounting plate, a sliding plate, a connecting rod, a guiding block, and a receiving block; two multi-stage hydraulic rods are movably connected to the front side and the rear side of the vertical plate respectively; the telescopic parts of the two multi-stage hydraulic rods on the same side are fixedly connected to a second mounting plate together; a guiding groove is formed in the middle of the vertical plate; a sliding plate is slidably connected in the guiding groove; a connecting rod is fixedly connected to the front part and the rear part of the sliding plate respectively; the upper parts of the two connecting rods are movably connected to a second mounting plate respectively; a guiding block is fixedly connected to the front side and the rear side of the vertical plate respectively; each of the two guiding blocks is slidably connected to a connecting rod; a receiving block is fixedly connected to the left side and the right side of the vertical plate respectively; the two receiving blocks are in contact with the two second mounting plates together.

[0011] Optionally, the moving component located in the front includes a second U-shaped plate, a first electric slide rail, a first electric slider, a third U-shaped plate, a second electric slide rail, and a second electric slider; a second U-shaped plate is connected to the front power component; a first electric slide rail is fixedly connected to the front side and the rear side of the second U-shaped plate respectively; a first electric slider is slidably connected to each of the first electric slide rails; all the first electric sliders are fixedly connected to a third U-shaped plate together; a second electric slide rail is fixedly connected to the third U-shaped plate; a second electric slider is slidably connected to the second electric slide rail; the second electric slider is connected to the corresponding welding component.

[0012] Optionally, the welding component located in the front includes a first fixing block, a welding torch, a first motor, a spur gear, and a toothed ring; a first fixing block is fixedly connected to the second electric slider; a welding torch is rotatably connected to the middle of the first fixing block; a first motor is fixedly connected to the left part of the first fixing block; a spur gear is fixedly connected to the output shaft of the first motor; a toothed ring is fixedly connected to the rear part of the welding torch; the toothed ring meshes with the spur gear.

[0013] Optionally, the limiting frame is composed of a bracket, a plurality of first rotating plates, and two supporting blocks, and the bracket is detachably connected to the plurality of first rotating plates; the plurality of first rotating plates are connected to each other by bolts, and the two supporting blocks are detachably connected to the vertical plate; the pressing plate is formed by connecting a plurality of second rotating plates by bolts.

[0014] Optionally, it further includes a correction component, and a correction component is connected to each power component; the correction component located in the front includes a second fixing block, a U-shaped frame, a second electric push rod, a connecting block, a pressure sensor, an annular block, a second motor, and a milling cutter; a second fixing block is connected to the front power component; a U-shaped frame is fixedly connected to the rear side of the second fixing block; two second electric push rods are fixedly connected to the second fixing block; the telescopic parts of the two second electric push rods are fixedly connected to a connecting block together; a plurality of pressure sensors are arranged on the front side of the connecting block in an annular array; all the pressure sensors are fixedly connected to an annular block together; a second motor is fixedly connected to the rear side of the connecting block; an avoidance groove is formed in the second fixing block; the second motor is located in the avoidance groove; a milling cutter is fixedly connected to the output shaft of the second motor, and the milling cutter is located inside the annular block.

[0015] Optionally, it further includes a camera, and one camera is installed on the upper part of each fixing block one.

[0016] A usage method of a welding device for an assembled light steel frame includes the following steps:

[0017] Step 1: The operator first places the receiving square pipe in the placement groove, then places the V-shaped square pipe on the placement groove, and then places several support square pipes between the receiving square pipe and the V-shaped square pipe, and makes the receiving square pipe and the V-shaped square pipe closely adhere to the limiting frame;

[0018] Step 2: After the receiving square pipe, the V-shaped square pipe and the support square pipes are placed well, the V-shaped square pipe and the support square pipes are clamped by the first U-shaped plate and the pressing plate;

[0019] Step 3: After the receiving square pipe, the V-shaped square pipe and the support square pipes are fixed, the adjustment component drives the power component, the moving component and the welding component to swing, so that the power component is parallel to the connection part to be fixedly connected, and then the power component, the moving component and the welding component cooperate with each other to drive the welding torch to fixedly connect the connection parts on the receiving square pipe, the V-shaped square pipe and the support square pipes;

[0020] Step 4: During the fixing connection process, the front side of the support square pipe and the front side of the receiving square pipe are detected by the camera. If the front side of the support square pipe is not flush with the front side of the receiving square pipe, the raised part of the support square pipe is squeezed flat by the annular block. When the annular block cannot flatten the raised part of the support square pipe, the unflattened part is milled off by the milling cutter.

[0021] The beneficial effects of the present invention are:

[0022] The welding device for the assembled light steel frame obtained by the above design of the present invention restricts the receiving square pipe, the V-shaped square pipe and several support square pipes through the placement groove and the limiting frame of the vertical plate, so that the receiving square pipe, the V-shaped square pipe and several support square pipes are spliced to form a triangular roof truss and are placed vertically, and then the spliced triangular roof truss is fixed by the first U-shaped plate and the pressing plate.

[0023] The welding device for the assembled light steel frame obtained by the above design of the present invention, according to the position of the connection part to be welded, drives the power component, the moving component and the welding component to swing by controlling the adjustment component, so that the power component is parallel to the connection part to be welded;

[0024] Then, the connection part is welded by the welding torch of the welding component. In this way, not only a large amount of manpower can be saved, but also two welding torches can be controlled to weld the connection parts of the triangular roof truss at the same time, improving the welding efficiency. Moreover, it is not necessary to turn over the triangular roof truss. While simplifying the steps, it does not affect the welding quality of the triangular roof truss, and there is no need to reserve enough space for turning over the triangular roof truss.

[0025] The welding equipment for prefabricated light steel frames obtained by the above design of the present invention extrudes the warped part of the support square pipe through the annular block, making the warped part of the support square pipe flat and flush with the front side of the receiving square pipe or V-shaped square pipe, so that the gap at the connection where the support square pipe is connected to the receiving square pipe or V-shaped square pipe becomes smaller.

[0026] When the warped part of the support square pipe is an excess part and cannot be concave and flattened under extrusion, the pressure sensor reaches the upper pressure limit and will be forced to contract, causing the milling cutter to contact the warped part of the support square pipe. At this time, the warped part of the support square pipe is milled off by the continuously rotating milling cutter, making the front side of the support square pipe flush with the front side of the receiving square pipe or V-shaped square pipe, avoiding the problem of poor welding wire caused by too large a gap at the connection and ensuring the quality of the welded triangular roof truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0028] In the drawings:

[0029] Figure 1 is a three-dimensional structural schematic diagram of the welding equipment for prefabricated light steel frames of the present invention;

[0030] Figure 2 is of the present invention Figure 1 an enlarged view of area A therein;

[0031] Figure 3 is a combined three-dimensional structural schematic diagram of the mounting plate 1 and the clamping assembly of the welding equipment for prefabricated light steel frames of the present invention;

[0032] Figure 4 is a combined three-dimensional structural schematic diagram of the limiting frame and the pressing plate of the welding equipment for prefabricated light steel frames of the present invention;

[0033] Figure 5 is a combined three-dimensional structural schematic diagram of the housing, vertical plate, adjustment assembly, power assembly, moving assembly, welding assembly and correction assembly of the welding equipment for prefabricated light steel frames of the present invention;

[0034] Figure 6 is a partial combined three-dimensional structural schematic diagram of the power assembly, moving assembly and welding assembly of the welding equipment for prefabricated light steel frames of the present invention;

[0035] Figure 7 is a first three-dimensional structural schematic diagram of the correction assembly of the welding equipment for prefabricated light steel frames of the present invention;

[0036] Figure 8 This is the second three-dimensional structural schematic diagram of the correction component of the welding equipment for the prefabricated light steel frame of the present invention;

[0037] Figure 9 This is the three-dimensional structural schematic diagram of various triangular roof trusses of the welding equipment for the prefabricated light steel frame of the present invention;

[0038] Figure 10 This is the combined inclined state diagram of the adjustment component, power component, moving component and welding component of the welding equipment for the prefabricated light steel frame of the present invention.

[0039] Marks in the attached drawings: 1 - housing, 2 - vertical plate, 3 - connecting plate, 4 - mounting plate 1, 5 - limiting frame, 6 - limiting block 1, 7 - designated bolt, 8 - triangular roof truss,

[0040] 101 - multi-section push rod, 102 - limiting plate, 103 - U-shaped plate 1, 104 - pressing plate, 105 - limiting block 2, 106 - electric push rod 1, 107 - pushing block,

[0041] 201 - multi-section hydraulic rod, 202 - mounting plate 2, 203 - sliding plate, 204 - connecting rod, 205 - guiding block, 206 - receiving block,

[0042] 301 - electric slide rail 3, 302 - electric slider 3,

[0043] 401 - U-shaped plate 2, 402 - electric slide rail 1, 403 - electric slider 1, 404 - U-shaped plate 3, 405 - electric slide rail 2, 406 - electric slider 2, 407 - fixing block 1, 408 - welding torch, 409 - motor 1, 410 - straight gear, 411 - toothed ring,

[0044] 501 - fixing block 2, 502 - U-shaped frame, 503 - electric push rod 2, 504 - connecting block, 505 - pressure sensor, 506 - annular block, 507 - motor 2, 508 - milling cutter, 509 - camera,

[0045] 51 - bracket, 52 - rotating plate 1, 53 - supporting block, 81 - receiving square pipe, 82 - V-shaped square pipe, 83 - supporting square pipe,

[0046] 2a - placing groove, 2b - strip hole, 2c - guiding groove, 4a - limiting groove, 4b - limiting post, 5a - protruding part, 10201 - rectangular sliding groove, 10301 - vertical sliding groove, 10401 - rotating plate 2, 50101 - clearance groove. Detailed implementation manners

[0047] The following describes the implementation manners of the present invention with reference to the attached drawings. Example 1

[0048] A welding device for an assembled light steel frame, as Figures 1 - 6 shown in Figures 9 - 10 Figures 1 and 2, includes a housing 1, a vertical plate 2, a connecting plate 3 and a first mounting plate 4; a vertical plate 2 is fixedly connected inside the housing 1; a placement groove 2a is formed on the upper surface of the vertical plate 2; two strip-shaped holes 2b are formed on the upper surface of the vertical plate 2, and the two strip-shaped holes 2b are located at the front side and the rear side of the left part of the placement groove 2a; a connecting plate 3 is fixedly connected to the rear side surface of the housing 1; a first mounting plate 4 is fixedly connected to the connecting plate 3;

[0049] It further includes a limiting frame 5, a first limiting block 6, a designated bolt 7, a clamping assembly, an adjusting assembly, a power assembly, a moving assembly and a welding assembly; a limiting frame 5 is fixedly connected to the lower surface of the first mounting plate 4; a protruding part 5a is provided on the limiting frame 5, and the protruding part 5a is used for limiting the triangular roof truss 8; the lower part of the limiting frame 5 is connected to the upper surface of the vertical plate 2, and the limiting frame 5 is located behind the placement groove 2a; a first limiting block 6 is slidably arranged at the left part of the placement groove 2a; one designated bolt 7 is arranged in each strip-shaped hole 2b, and the two designated bolts 7 are bolted to the first limiting block 6; a clamping assembly is connected to the first mounting plate 4; the front part and the rear part of the vertical plate 2 are jointly connected with an adjusting assembly; one power assembly is connected to the front part and the rear part of the adjusting assembly respectively; one moving assembly is connected to each power assembly; one welding assembly is connected to each moving assembly; the adjusting assembly is used for adjusting the orientation positions of the power assembly and the welding assembly, and adjusting the welding assembly to a position convenient for welding; the power assembly is used for driving the welding assembly to move left or right to weld the triangular roof truss 8. The clamping assembly includes multiple sections of push rods 101, a limiting plate 102, a U-shaped plate 103, a pressing plate 104, a second limiting block 105, an electric push rod 106 and a pushing block 107; four multi-section push rods 101 distributed in a rectangle are bolted to the first mounting plate 4; the telescopic parts of all the multi-section push rods 101 are jointly fixedly connected with a limiting plate 102; a rectangular sliding groove 10201 is formed in the limiting plate 102; a U-shaped plate 103 is slidably arranged in the rectangular sliding groove 10201; two limiting grooves 4a are formed in the first mounting plate 4; a limiting column 4b is arranged in each limiting groove 4a; the U-shaped plate 103 is slidably arranged in the two limiting grooves 4a; two vertical sliding grooves 10301 are formed in the U-shaped plate 103; the two limiting columns 4b are respectively slidably arranged in one vertical sliding groove 10301; the lower part of the U-shaped plate 103 is fixedly connected with a pressing plate 104; two second limiting blocks 105 are fixedly connected to the rear side surface of the pressing plate 104, and the two second limiting blocks 105 are symmetrically distributed left and right; an electric push rod 106 is bolted to the upper surface of the first mounting plate 4; the telescopic part of the electric push rod 106 is fixedly connected with a pushing block 107, and the pushing block 107 is located in front of the U-shaped plate 103; a groove is formed in the pushing block 107.

[0050] Further, in order not to affect the welding of the triangular truss 8, the lower part of the limiting frame 5 and the pressing plate 104 are both wavy.

[0051] The adjustment assembly includes multiple hydraulic rods 201, a second mounting plate 202, a sliding plate 203, a connecting rod 204, a guiding block 205, and a receiving block 206; two hydraulic rods 201 are hinged to the front side and the rear side of the vertical plate 2 respectively; the telescopic parts of the two hydraulic rods 201 on the same side are fixedly connected to a second mounting plate 202 together; a guiding groove 2c is formed in the middle of the vertical plate 2; a sliding plate 203 is slidably connected in the guiding groove 2c; a connecting rod 204 is fixedly connected to the front part and the rear part of the sliding plate 203 respectively; the upper parts of the two connecting rods 204 are hinged to a second mounting plate 202 respectively; a guiding block 205 is fixedly connected to the front side and the rear side of the vertical plate 2 respectively; each of the two guiding blocks 205 is slidably connected to a connecting rod 204; a receiving block 206 is fixedly connected to the left side and the right side of the vertical plate 2 respectively; the two receiving blocks 206 are in contact with the two second mounting plates 202 together, and the two second mounting plates 202 are supported by the two receiving blocks 206.

[0052] The power assembly located in the front includes an electric slide rail three 301 and an electric slider three 302; the electric slide rail three 301 is bolted to the second mounting plate 202; the electric slider three 302 is slidably connected to the electric slide rail three 301; the electric slider three 302 is connected to the corresponding moving assembly.

[0053] The moving assembly located in the front includes a U-shaped plate two 401, an electric slide rail one 402, an electric slider one 403, a U-shaped plate three 404, an electric slide rail two 405, and an electric slider two 406; the electric slider three 302 located in the front is fixedly connected to a U-shaped plate two 401; an electric slide rail one 402 is bolted to the front side and the rear side of the U-shaped plate two 401 respectively; an electric slider one 403 is slidably connected to each electric slide rail one 402; all the electric sliders one 403 are fixedly connected to a U-shaped plate three 404 together; an electric slide rail two 405 is bolted to the U-shaped plate three 404; the electric slider two 406 is slidably connected to the electric slide rail two 405; the electric slider two 406 is connected to the corresponding welding assembly.

[0054] The welding assembly located in the front includes a first fixing block 407, a welding torch 408, a first motor 409, a spur gear 410, and a toothed ring 411; the first fixing block 407 is fixedly connected to the electric slider two 406; the welding torch 408 is rotatably connected to the middle of the first fixing block 407; the first motor 409 is bolted to the left part of the first fixing block 407; the output shaft of the first motor 409 is fixedly connected to the spur gear 410; the toothed ring 411 is fixedly connected to the rear part of the welding torch 408; the toothed ring 411 meshes with the spur gear 410.

[0055] In order to adapt to different supporting methods of several supporting square tubes 83 and facilitate the welding of several supporting square tubes 83, the limiting frame 5 is composed of a bracket 51, a plurality of first rotating plates 52 and two supporting blocks 53, and the bracket 51 is detachably connected to the plurality of first rotating plates 52; the plurality of first rotating plates 52 are connected to each other by bolts, and the two supporting blocks 53 are detachably connected to the vertical plate 2; the pressing plate 104 is composed of a plurality of second rotating plates 10401 connected to each other by bolts.

[0056] The working steps of this embodiment are as follows:

[0057] For the following rotations, the viewing directions are all from front to back, from top to bottom, and from right to left;

[0058] First step, when in use, first place this prefabricated light steel frame with welding equipment in the required position;

[0059] Second step, the operator externally connects a power source to all components that require electric drive, and externally connects a hydraulic pump to the multi-section hydraulic rods 201. Then, manually place the receiving square tube 81 in the placement groove 2a first, push the first limiting block 6 to move in the placement groove 2a, make the first limiting block 6 close to the side wall of the receiving square tube 81, and then twist two specified bolts 7 to lock the first limiting block 6, so that the receiving square tube 81 is fixed. Then, place the V-shaped square tube 82 on the receiving square tube 81 and close to the limiting frame 5. At this time, the V-shaped square tube 82 is restricted by the convex part 5a. Then, place several supporting square tubes 83 in the frame formed by the receiving square tube 81 and the V-shaped square tube 82 and fit them with the limiting frame 5;

[0060] In the prior art, manually welding the triangular roof truss 8 not only takes a long time and has low work efficiency, but also requires a large amount of manpower. When welding the triangular roof truss 8 with existing equipment, although a large amount of manpower is not required, only a single side of the triangular roof truss 8 can be welded each time, and the triangular roof truss 8 needs to be turned over by one week and then the other side is welded. This not only takes a lot of time, but also requires a large site to install the existing equipment. Therefore, control the contraction of the telescopic parts of all the multi-segment push rods 101, drive the limit plate 102, the first U-shaped plate 103, the pressing plate 104 and the second limit block 105 to move downward together. After the limit column 4b slides to the uppermost end of the vertical chute 10301, the wavy pressing plate 104 coincides with the limit frame 5, and the first U-shaped plate 103 is inserted into the groove of the push block 107. Then control the telescopic part of the first electric push rod 106 to push out, drive the first U-shaped plate 103, the pressing plate 104, the second limit block 105 and the push block 107 to move backward together, and let the first U-shaped plate 103 slide to the end in the rectangular chute 10201 and the limit groove 4a, so that the first U-shaped plate 103 and the pressing plate 104 squeeze the V-shaped square tube 82 and several support square tubes 83, and clamp the V-shaped square tube 82 and several support square tubes 83. During the movement of the two symmetrical second limit blocks 105, the upper part of the V-shaped square tube 82 is also limited. After the receiving square tube 81, the V-shaped square tube 82 and several support square tubes 83 are fixed, the operator manually controls the adjustment component, the power component, the moving component and the welding component to perform pre-alignment, and sets all the parameters in advance, which is convenient for subsequent welding of the joints on the receiving square tube 81, the V-shaped square tube 82 and several support square tubes 83.

[0061] In the third step, after the receiving square tube 81, the V-shaped square tube 82 and several support square tubes 83 are all fixed, control the synchronous operation of the two power components, the two moving components and the two welding components to weld the joints on the front side and the rear side of the receiving square tube 81, the V-shaped square tube 82 and several support square tubes 83. Taking the power component, the moving component and the welding component in the front as an example, control the two first electric sliders 403 to move upward on the first electric slide rail 402, drive the third U-shaped plate 404, the second electric slide rail 405, the second electric slider 406 and the welding component to move upward together. When the welding head of the welding torch 408 moves to be flush with the joint on the front side of the receiving square tube 81 and the V-shaped square tube 82, the two first electric sliders 403 stop moving. Initially, the third electric slider 302 is located at the leftmost end of the third electric slide rail 301. After the height of the welding torch 408 is adjusted, control the third electric slider 302 to move rightward on the third electric slide rail 301, drive the second U-shaped plate 401, the first electric slide rail 402, the first electric slider 403, the third U-shaped plate 404, the second electric slide rail 405, the second electric slider 406 and the welding component to move rightward together. When the welding head of the welding torch 408 moves to be directly opposite to the joint on the left side of the receiving square tube 81 and the V-shaped square tube 82, control the third electric slider 302 to stop moving;

[0062] Then, control the output shaft of the first motor 409 to drive the spur gear 410 to rotate, drive the welding torch 408 to rotate through the toothed ring 411, adjust the welding torch 408, and adjust the welding head of the welding torch 408 to an angle convenient for welding. Then, control the second electric slider 406 to move backward on the second electric slide rail 405, drive the third U-shaped plate 404, the second electric slide rail 405, the second electric slider 406 and the welding assembly to move backward together. When the welding head of the welding torch 408 approaches the left connection of the receiving square pipe 81 and the V-shaped square pipe 82, control the second electric slider 406 to stop moving, and then control the welding torch 408 to start welding. At the same time, the third electric slider 302 drives the connected components to move to the right together, and weld the left connection of the receiving square pipe 81 and the V-shaped square pipe 82 through the welding torch 408. Until the connection is welded, control the welding torch 408 to stop welding. Then, the third electric slider 302 drives the connected components to continue moving to the right, and weld the right connection of the receiving square pipe 81 and the V-shaped square pipe 82 through the welding torch 408 until the front connection of the receiving square pipe 81 and the V-shaped square pipe 82 is welded;

[0063] When the front connection of the receiving square pipe 81 and the V-shaped square pipe 82 is welded, then weld the front connection of the receiving square pipe 81 and several support square pipes 83. Since multiple connections on the front sides of the receiving square pipe 81 and several support square pipes 83 are on the same horizontal line, therefore, multiple connections on the front sides of the receiving square pipe 81 and several support square pipes 83 can also be welded with reference to the welding method of the front connection of the receiving square pipe 81 and the V-shaped square pipe 82. When welding the front connection of the receiving square pipe 81 and the V-shaped square pipe 82 and multiple connections on the front sides of the receiving square pipe 81 and several support square pipes 83, the rear power assembly, moving assembly and welding assembly also operate synchronously to weld the front connection of the receiving square pipe 81 and the V-shaped square pipe 82 and multiple connections on the front sides of the receiving square pipe 81 and several support square pipes 83.

[0064] When the connection at the lower part of the front side of the receiving square pipe 81 and the V-shaped square pipe 82 is welded, it is necessary to weld the left and right side connections of the receiving square pipe 81 and the V-shaped square pipe 82, and also weld the left and right side connections of the receiving square pipe 81 and several support square pipes 83. Before welding, with the support square pipe 83 in the middle of the V-shaped square pipe 82 as the center, divide the left and right side connections of all the receiving square pipes 81 and several support square pipes 83 into two parts. Among them, the connections on the left part are welded by the front power assembly, moving assembly and welding assembly, while the connections on the right part are welded by the rear power assembly, moving assembly and welding assembly;

[0065] Taking the front power component, moving component, and welding component as an example, for welding any joint on the left side, first control the electric slider three 302 to drive the connected components to move together. After moving the welding torch 408 to the front of the joint, control the electric slider one 403 to drive the connected components and the welding torch 408 to move upward again. Stop after moving the welding torch 408 above the receiving square pipe 81. Then control the output shaft of the first motor 409 to drive the connected components to rotate. Since the included angles at these joint parts are different, it is necessary to adjust the welding angle of the welding torch 408 according to the size of the included angle. After the welding angle of the welding torch 408 is adjusted, control the output shaft of the first motor 409 to stop rotating. Then control the electric slider two 406 to drive the connected components to move backward, moving the welding head of the welding torch 408 to the rearmost end of the joint. Then control the electric slider two 406 to drive the connected components to reset forward. During the reset process, control the welding torch 408 to start welding the joint until the joint is welded completely. Then the welding torch 408 automatically stops welding. For the other remaining joints, operate according to the working method of this joint, weld all the joints in sequence, and then control the welding component, moving component, and power component to reset in sequence.

[0066] When the welding component, moving component, and power component are reset completely and it is necessary to weld the joints between the V-shaped square pipe 82 and several support square pipes 83, control all the multi-stage hydraulic rods 201 to perform a one-stage push, driving the second mounting plate 202, sliding plate 203, connecting rod 204, power component, moving component, and welding component to move upward together. Then control the telescopic parts of the two multi-stage hydraulic rods 201 on the left to perform a one-stage contraction, and the telescopic parts of the two multi-stage hydraulic rods 201 on the right to perform a two-stage push. The second mounting plate 202 swings around the upper hinge point of the connecting rod 204, driving the power component, moving component, and welding component to swing together, changing the second mounting plate 202, power component, moving component, and welding component from a horizontal state to an inclined state with the left side lower and the right side higher, as Figure 10 shown, which is convenient for welding the joints on the left side of the V-shaped square pipe 82 and several support square pipes 83;

[0067] At this time, control the two power components, two moving components, and two welding components to operate synchronously, and work according to the above-mentioned welding method for the front and rear side joints of the receiving square pipe 81 and several support square pipes 83 to complete the welding of the front and rear side joints on the left side of the V-shaped square pipe 82 and several support square pipes 83. Then work according to the above-mentioned welding method for the left and right side joints of the receiving square pipe 81 and several support square pipes 83 to complete the welding of the left and right side joints on the left side of the V-shaped square pipe 82 and several support square pipes 83.

[0068] After the welding of the connection between the receiving square pipe 81 and the left parts of several supporting square pipes 83 is completed, first control the telescopic parts of the two multi-stage hydraulic rods 201 on the left to perform a first-stage push, and the telescopic parts of the two multi-stage hydraulic rods 201 on the right to perform a second-stage contraction, so as to change the inclined mounting plate two 202, the power assembly, the moving assembly and the welding assembly back to the horizontal state. Then control the telescopic parts of the two multi-stage hydraulic rods 201 on the left to perform a second-stage push, and the telescopic parts of the two multi-stage hydraulic rods 201 on the right to perform a first-stage contraction, and change the horizontal mounting plate two 202, the power assembly, the moving assembly and the welding assembly back to an inclined state with the left side higher and the right side lower. Then control the power assembly, the moving assembly and the welding assembly to cooperate with each other to weld the connection between the V-shaped square pipe 82 and the right parts of several supporting square pipes 83 until the welding of all the connections between the V-shaped square pipe 82 and the right parts of several supporting square pipes 83 is completed. At this time, the receiving square pipe 81, the V-shaped square pipe 82 and several supporting square pipes 83 form a triangular roof truss 8, and then control the welding assembly, the moving assembly, the adjustment assembly and the power assembly to reset in sequence;

[0069] In this way, the receiving square pipe 81, the V-shaped square pipe 82 and several supporting square pipes 83 are restricted by the placement groove 2a of the vertical plate 2 and the limiting frame 5, so that the triangular roof truss 8 formed by splicing the receiving square pipe 81, the V-shaped square pipe 82 and several supporting square pipes 83 is placed vertically. Then, the V-shaped square pipe 82 and several supporting square pipes 83 are clamped by the U-shaped plate one 103 and the pressing plate 104, so that the receiving square pipe 81, the V-shaped square pipe 82 and several supporting square pipes 83 are fixed vertically to form a triangular roof truss 8. Then, according to the position of the connection to be welded, control the adjustment assembly to drive the power assembly, the moving assembly and the welding assembly to swing, so that the power assembly is parallel to the connection to be welded. Then, the connection is welded by the welding torch 408 of the welding assembly. This not only saves a lot of manpower, but also can control the two welding torches 408 to weld the connections of the triangular roof truss 8 at the same time, improving the welding efficiency. Moreover, there is no need to turn over the triangular roof truss 8. While simplifying the steps, it does not affect the welding quality of the triangular roof truss 8, and there is no need to reserve enough space for turning over the triangular roof truss 8.

[0070] When the telescopic parts of all multi-stage hydraulic rods 201 contract, and the power assembly, moving assembly, and welding assembly are in a horizontal state, control the electric slider three 302 to drive the connected components and the welding head of the welding torch 408 to move to the leftmost connection of several support square tubes 83. Then control the electric slider one 403 to drive the connected components and the welding torch 408 to move upward together, moving the welding head of the welding torch 408 to the lowermost end of the leftmost connection of several support square tubes 83. Then control the electric slider two 406 to drive the connected components to move forward, bringing the welding head of the welding torch 408 close to the leftmost connection of several support square tubes 83. Then control the welding torch 408 to start, and weld the leftmost connection of several support square tubes 83. At the same time, control the electric slider one 403 to drive the connected components and the welding torch 408 to move upward together. Until after the connection is welded, control the welding torch 408 to stop working. Then control the electric slider three 302 to drive the connected components and the welding torch 408 to continue moving to the right, and control the moving assembly and the welding assembly to cooperate with each other to weld other connections of several support square tubes 83 until all connections of several support square tubes 83 are welded.

[0071] It should be noted that by manually adjusting the shapes of multiple first rotating plates 52 and multiple second rotating plates 10401, the multiple first rotating plates 52 and multiple second rotating plates 10401 are adapted to several support square tubes 83 with different support methods inside the triangular roof truss 8, such as Figure 9 shown, which is convenient for the welding torch 408 to weld several support square tubes 83.

[0072] It should be noted that during the welding process of the power assembly, moving assembly, and welding assembly, the welding path is pre-debugged and can automatically avoid the limit frame 5, the first U-shaped plate 103, and the pressing plate 104, preventing the components of the welding assembly from colliding with the limit frame 5, the first U-shaped plate 103, or the pressing plate 104 during the welding process, causing unnecessary losses.

[0073] In the fourth step, when the triangular roof truss 8 is welded and the adjustment assembly, power assembly, moving assembly, and welding assembly are reset, control the telescopic part of the first electric push rod 106 to contract, driving the connected components to move forward, so that the first U-shaped plate 103 and the pressing plate 104 no longer clamp the welded triangular roof truss 8. Then control the telescopic parts of all multi-stage push rods 101 to extend, driving the connected components to move upward, moving the pressing plate 104 above the triangular roof truss 8. Then the operator twists two specified bolts 7, loosens the first limit block 6, and removes it. Then push the triangular roof truss 8 to move leftward along the placement groove 2a until the triangular roof truss 8 is separated from the placement groove 2a, and then the operator removes it. Embodiment 2

[0074] On the basis of Embodiment 1, as Figures 5 - 8As shown in the figure, it further includes a correction component, and each power component is connected with a correction component; the correction component located in the front includes a second fixed block 501, a U-shaped frame 502, a second electric push rod 503, a connecting block 504, a pressure sensor 505, an annular block 506, a second motor 507 and a milling cutter 508; another third electric slider 302 is slidably connected to the third electric slide rail 301, and the second fixed block 501 is fixedly connected to the third electric slider 302; the second fixed block 501 is fixedly connected to the U-shaped frame 502 on the rear side; two second electric push rods 503 are bolted to the second fixed block 501; the telescopic parts of the two second electric push rods 503 are fixedly connected to the connecting block 504 together; three pressure sensors 505 distributed in an annular array are arranged on the front side of the connecting block 504; all the pressure sensors 505 are fixedly connected to the annular block 506 together; the second motor 507 is bolted to the rear side of the connecting block 504; an avoidance groove 50101 is formed in the second fixed block 501; the second motor 507 is located in the avoidance groove 50101; the output shaft of the second motor 507 is fixedly connected to the milling cutter 508, and the milling cutter 508 is located inside the annular block 506.

[0075] It further includes a camera 509, and a camera 509 is installed on the upper part of each first fixed block 407.

[0076] The working principle of this embodiment is as follows:

[0077] In Step 3 of Embodiment 1: The operator externally connects a power source to all components that require electric drive, and presets a pressure value on the pressure sensor 505. Since the receiving square tube 81, the V-shaped square tube 82, and the supporting square tube 83 are all hollow, with the larger side facing downwards, during the cutting process, the phenomenon of the cutting surface warping will occur. In the subsequent splicing process, mainly the cutting surface of the supporting square tube 83 fits against the surfaces of the receiving square tube 81 and the V-shaped square tube 82. When the cutting surface of the supporting square tube 83 warps, the front side of the supporting square tube 83 cannot be flush with the front side of the receiving square tube 81 or the V-shaped square tube 82, resulting in a problem of excessive gap at the connection where the supporting square tube 83 is connected to the receiving square tube 81 or the V-shaped square tube 82. As a result, during subsequent welding, the problem of poor welding wire is likely to occur, and poor welding wire will cause the quality of the welded triangular roof truss 8 to be unqualified. Therefore, when the power assembly, the moving assembly, and the welding assembly operate synchronously, and the welding torch 408 is welding the connection, the camera 509 is used to detect the connections on the receiving square tube 81, the V-shaped square tube 82, and several supporting square tubes 83 to confirm whether the front side of the supporting square tube 83 at the connection is flush with the front side of the receiving square tube 81 or the V-shaped square tube 82. If it is detected that the front side of the supporting square tube 83 is flush with the front side of the receiving square tube 81 or the V-shaped square tube 82, normal welding is carried out. If it is detected that the front side of the supporting square tube 83 is not flush with the front side of the receiving square tube 81 or the V-shaped square tube 82, the two correction assemblies are controlled to operate synchronously. Taking the front correction assembly as an example, the electric slider 403 is controlled to drive the connected components and the welding torch 408 to reset, and then another electric slider 403 is controlled to drive the moving assembly and the correction assembly to move to the welding position there. Then, the moving assembly is controlled to operate, moving the correction assembly above the vertical plate 2 and close to the receiving square tube 81 until the U-shaped frame 502 contacts the receiving square tube 81 or the V-shaped square tube 82, and then the moving assembly is controlled to stop moving. Then, the telescopic parts of the two electric push rods 503 are pushed out, driving the connecting block 504, the pressure sensor 505, the annular block 506, the motor 507, and the milling cutter 508 to move towards the receiving square tube 81 or the V-shaped square tube 82 together. The warped part of the supporting square tube 83 is squeezed by the annular block 506 to make the warped part of the supporting square tube 83 flat and flush with the front side of the receiving square tube 81 or the V-shaped square tube 82, reducing the gap at the connection where the supporting square tube 83 is connected to the receiving square tube 81 or the V-shaped square tube 82, avoiding the problem of poor welding wire caused by excessive gap at the connection, and ensuring the quality of the welded triangular roof truss 8;

[0078] During the extrusion of the annular block 506, the pressure value fed back by the pressure sensor 505 does not reach the upper limit, so the pressure sensor 505 will not shrink, and then the telescopic parts of the two electric push rods 503 are controlled to shrink, driving the connected parts to reset, and then the moving assembly is controlled to reset, and the other electric slider 403 also drives the connected parts and the correction assembly to reset, and the electric slider 403 drives the connected parts and the welding gun 408 back to continue welding.

[0079] If the pressure value fed back by the pressure sensor 505 reaches the upper limit value during the extrusion of the annular block 506, the connection block 504 will push the pressure sensor 505 to compress, so that the milling cutter 508 contacts the raised part of the supporting square tube 83. The contraction of the pressure sensor 505 indicates that the raised part of the supporting square tube 83 is a redundant part, which cannot be concave and flattened due to the extrusion and needs to be removed. The output shaft of the control motor 2 507 is rotated to drive the milling cutter 508 to rotate together, and the raised part of the supporting square tube 83 is milled off by the continuously rotating milling cutter 508 until the milling cutter 508 completely mills off the raised part of the supporting square tube 83. When it is about to contact with the receiving square tube 81 or the V-shaped square tube 82, the output shaft of the control motor 2 507 stops rotating. At this time, the front side of the supporting square tube 83 is flush with the front side of the receiving square tube 81 or the V-shaped square tube 82, so that the gap at the connection between the supporting square tube 83 and the receiving square tube 81 or the V-shaped square tube 82 becomes smaller, and the pressure sensor 505 is no longer squeezed by the receiving square tube 81 or the V-shaped square tube 82, and will automatically reset, so that the annular block 506 is in contact with the supporting square tube 83 and the receiving square tube 81 or the supporting square tube 83 and the V-shaped square tube 82, avoiding the problem of poor welding line caused by too large a gap at the connection, thereby ensuring the quality of the triangular roof truss 8 after welding;

[0080] After the raised part of the supporting square tube 83 is milled off, the telescopic parts of the two electric push rods 503 are controlled to contract, driving the connected parts to reset, and then the moving assembly is controlled to reset, and the other electric slider 403 also drives the connected parts and the correction assembly to reset, and the electric slider 403 drives the connected parts and the welding gun 408 back to continue welding.

[0081] It should be noted that the two correction components are controlled to operate synchronously. When the front annular block 506 squeezes the supporting square tube 83, the rear annular block 506 also squeezes it synchronously, so that the squeezed supporting square tube 83 will not move to the other side due to the thrust on one side, thereby causing the supporting square tube 83 to deviate.

[0082] A method for using welding equipment for assembled light steel frames comprises the following steps:

[0083] Step 1: The operator first places the receiving square pipe 81 in the placement groove 2a, then places the V-shaped square pipe 82 on the placement groove 2a, and then places a number of supporting square pipes 83 between the receiving square pipe 81 and the V-shaped square pipe 82, and makes the receiving square pipe 81 and the V-shaped square pipe 82 closely adhere to the limit frame 5;

[0084] Step 2: After the receiving square pipe 81, the V-shaped square pipe 82 and the supporting square pipes 83 are placed, the V-shaped square pipe 82 and the supporting square pipes 83 are clamped by the U-shaped plate 103 and the pressing plate 104;

[0085] Step 3: After the receiving square pipe 81, the V-shaped square pipe 82 and the supporting square pipes 83 are fixed, the adjustment component drives the power component, the moving component and the welding component to swing, so that the power component is parallel to the connection part to be welded, and then the power component, the moving component and the welding component cooperate with each other to drive the welding torch 408 to weld the connection parts on the receiving square pipe 81, the V-shaped square pipe 82 and the supporting square pipes 83;

[0086] Step 4: During the welding process, the front side of the supporting square pipe 83 and the front side of the receiving square pipe 81 are detected by the camera 509. If the front side of the supporting square pipe 83 is not flush with the front side of the receiving square pipe 81, the raised part of the supporting square pipe 83 is squeezed flat by the annular block 506. When the annular block 506 cannot flatten the raised part of the supporting square pipe 83, the unflattened part is milled off by the milling cutter 508.

[0087] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A welding device for an assembled light steel frame, comprising a housing (1); a vertical plate (2) is fixedly connected inside the housing (1); a placement groove (2a) is provided on the upper surface of the vertical plate (2); two strip-shaped holes (2b) are provided on the upper surface of the vertical plate (2); a connecting plate (3) is fixedly connected to the rear side of the housing (1); a mounting plate (4) is fixedly connected to the connecting plate (3); the characteristics are: The invention also comprises a limit frame (5); the limit frame (5) is fixedly connected to the lower surface of the mounting plate (4); a protrusion (5a) is arranged on the limit frame (5); the lower part of the limit frame (5) is connected to the upper surface of the vertical plate (2), and the limit frame (5) is located behind the placement groove (2a); a limit block (6) is slidably arranged on the left part of the placement groove (2a); a designated bolt (7) is arranged in each strip hole (2b), and two designated bolts (7) are fixedly connected to the limit block (6); a clamping assembly for clamping the triangular roof truss (8) is connected to the mounting plate (4); the front and rear parts of the vertical plate (2) are commonly connected to an adjustment assembly; the front and rear parts of the adjustment assembly are respectively connected to a power assembly; each power assembly is connected to a moving assembly; each moving assembly is connected to a welding assembly for fixing the triangular roof truss (8); the adjustment assembly is used to adjust the orientation position of the power assembly and the welding assembly; the power assembly is used to drive the welding assembly to move left or right; The clamping assembly comprises a multi-section push rod (101); a plurality of multi-section push rods (101) distributed in a rectangular shape are fixedly connected to a mounting plate (4); the telescopic parts of all the multi-section push rods (101) are fixedly connected to a limiting plate (102); a rectangular slide groove (10201) is provided on the limiting plate (102); a U-shaped plate (103) is slidably arranged in the rectangular slide groove (10201); two limiting grooves (4a) are provided on the mounting plate (4); a limiting column (4b) is arranged in each limiting groove (4a); the U-shaped plate (103) is slidably arranged in the two limiting grooves (4a); Two vertical slide grooves (10301) are provided; two limit columns (4b) are slidably arranged in each vertical slide groove (10301); a pressure plate (104) is fixedly connected to the lower part of the U-shaped plate (103); two limit blocks (105) are fixedly connected to the rear side of the pressure plate (104), and the two limit blocks (105) are symmetrically distributed on the left and right; an electric push rod (106) is fixedly connected to the upper surface of the mounting plate (4); a push block (107) is fixedly connected to the telescopic part of the electric push rod (106), and the push block (107) is located in front of the U-shaped plate (103); a groove is arranged on the push block (107); The lower part of the limiting frame (5) and the pressing plate (104) are both wavy; The adjustment assembly comprises a multi-section hydraulic rod (201); the front side and the rear side of the vertical plate (2) are each movably connected to two multi-section hydraulic rods (201); the telescopic parts of the two multi-section hydraulic rods (201) on the same side are commonly fixedly connected to a second mounting plate (202); a guide groove (2c) is provided in the middle of the vertical plate (2); a slide plate (203) is slidably connected in the guide groove (2c); the front and rear parts of the slide plate (203) are each fixedly connected to a connecting rod (204); the upper parts of the two connecting rods (204) are each movably connected to a second mounting plate (202); the front side and the rear side of the vertical plate (2) are each fixedly connected to a guide block (205); the two guide blocks (205) are each slidably connected to a connecting rod (204); the left side and the right side of the vertical plate (2) are each fixedly connected to a receiving block (206); the two receiving blocks (206) are commonly in contact with the two second mounting plates (202); The limiting frame (5) is composed of a bracket (51), a plurality of rotating plates (52) and two supporting blocks (53), wherein the bracket (51) and the plurality of rotating plates (52) are detachably connected; the plurality of rotating plates (52) are connected to each other via bolts, and the two supporting blocks (53) are detachably connected to the vertical plate (2); and the pressing plate (104) is composed of a plurality of rotating plates (10401) connected to each other via bolts.

2. The welding equipment for assembled light steel frame according to claim 1 is characterized in that: The moving assembly at the front includes a U-shaped plate 2 (401); the U-shaped plate 2 (401) is connected to the power assembly at the front; the front side and the rear side of the U-shaped plate 2 (401) are each fixedly connected to an electric slide rail 1 (402); each electric slide rail 1 (402) is slidably connected to an electric slider 1 (403); all the electric sliders 1 (403) are commonly fixedly connected to a U-shaped plate 3 (404); an electric slide rail 2 (405) is fixedly connected to the U-shaped plate 3 (404); an electric slide rail 2 (406) is slidably connected to the electric slide rail 2 (405); and the electric slider 2 (406) is connected to the corresponding welding assembly.

3. The welding equipment for assembled light steel frame according to claim 2 is characterized in that: The welding assembly located at the front includes a fixed block 1 (407); the fixed block 1 (407) is fixedly connected to the electric slider 2 (406); the middle part of the fixed block 1 (407) is rotatably connected to a welding gun (408); the left part of the fixed block 1 (407) is fixedly connected to a motor 1 (409); the output shaft of the motor 1 (409) is fixedly connected to a spur gear (410); the rear part of the welding gun (408) is fixedly connected to a gear ring (411); and the gear ring (411) is meshed with the spur gear (410).

4. The welding equipment for assembled light steel frame according to claim 3 is characterized in that: The invention also includes a correction component, each power component is connected to a correction component; the correction component located in the front includes a second fixing block (501); the second fixing block (501) is connected to the power component in the front; a U-shaped frame (502) is fixedly connected to the rear side of the second fixing block (501); two second electric push rods (503) are fixedly connected to the second fixing block (501); the telescopic parts of the two second electric push rods (503) are commonly fixedly connected to a connecting block (504); the front side of the connecting block (504) is provided with A plurality of pressure sensors (505) are arranged in a circular array; all the pressure sensors (505) are fixedly connected to a circular block (506); a second motor (507) is fixedly connected to the rear side of the connecting block (504); a second fixed block (501) is provided with an air avoidance groove (50101); the second motor (507) is located in the air avoidance groove (50101); a milling cutter (508) is fixedly connected to the output shaft of the second motor (507), and the milling cutter (508) is located on the inner side of the circular block (506).

5. The welding equipment for assembled light steel frame according to claim 4 is characterized in that: It also includes a camera (509), and a camera (509) is installed on the upper part of each fixing block (407).

6. A method for using a welding device for an assembled light steel frame, the method for using the welding device for an assembled light steel frame according to claim 5, characterized in that: The following steps are included: Step 1: The operator first places the receiving square tube (81) in the placement groove (2a), then places the V-shaped square tube (82) on the placement groove (2a), and then places a plurality of supporting square tubes (83) between the receiving square tube (81) and the V-shaped square tube (82), and makes the receiving square tube (81) and the V-shaped square tube (82) close to the limiting frame (5); Step 2: After the receiving square tube (81), the V-shaped square tube (82) and the supporting square tube (83) are placed, the V-shaped square tube (82) and the supporting square tube (83) are clamped by a U-shaped plate 1 (103) and a pressing plate (104); Step 3: After the receiving square tube (81), the V-shaped square tube (82) and the supporting square tube (83) are fixed, the adjustment assembly is used to swing the power assembly, the moving assembly and the welding assembly, so that the power assembly is parallel to the connection to be fixed, and then the power assembly, the moving assembly and the welding assembly cooperate with each other to carry out the welding gun (408) to fix the connection on the receiving square tube (81), the V-shaped square tube (82) and the supporting square tube (83); Step 4: During the fixing process, the front side surface of the supporting square tube (83) and the front side surface of the receiving square tube (81) are detected by the camera (509). If the front side surface of the supporting square tube (83) and the front side surface of the receiving square tube (81) are not flush, the raised portion of the supporting square tube (83) is pressed flat by the annular block (506). If the annular block (506) cannot flatten the raised portion of the supporting square tube (83), the portion that cannot be flattened is milled off by the milling cutter (508).

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