Roof profiled steel sheet stud welding device for metallurgical factory building and construction method

Abstract

The invention relates to the technical field of steel plate stud welding, in particular to a roof profiled steel plate stud welding device for metallurgical factory building and a construction method.The roof profiled steel plate stud welding device comprises a stand column and a base, a support is fixedly connected to the front face of the stand column, a welding device is arranged on the side face of the stand column, and an auxiliary positioning mechanism is arranged at the top of the support; the auxiliary positioning mechanism comprises a feeding unit and a clamping unit. The clamping unit comprises a mounting platform, a hydraulic cylinder, a first clamping plate, a second clamping plate, a first clamping block and a second clamping block. The device has the beneficial effects that part of air in the first cavity enters the communicating pipeline, the air is sprayed out from the interior of the communicating pipeline through the gap in the center of the suction cup, and the diameter of the gap in the center of the suction cup is far smaller than that of the communicating pipeline, so that the air is sprayed out at a certain speed; and dust and small particles attached to the surfaces of the profiled steel sheets can be blown down, so that the cleanliness of the surfaces of the profiled steel sheets is improved, and the profiled steel sheets are firmly clamped by the clamping blocks.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate stud welding, in particular to a roof corrugated steel plate stud welding device and a construction method for building a metallurgical plant. Background Art

[0002] The steel plate formed by cold bending the coated plate or plated plate by roller pressing to form a corrugated cross section along the plate width is called a corrugated steel plate. When the corrugated steel plate is used as the panel and wall plate of the industrial plant, the steel consumption per square meter is about 5 to 11 kilograms without insulation requirements. When there is a requirement for insulation, mineral wool board, glass wool, foam plastic, etc. can be used as insulation materials. The corrugated steel plate is combined with concrete to make a composite floor, which can save the wooden formwork and can be used as a load-bearing structure.

[0003] When welding the existing corrugated steel plate to the steel beam, it is necessary to place the corrugated steel plate on the top of the steel beam, pull the slide plate to one side to make the slide plate slide, compress the spring, clamp the corrugated steel plate, and then place the welding nails required for welding the corrugated steel plate and the steel beam on the inner side of the limit groove, and use two clamping blocks to clamp the welding nails between the two clamping blocks to clamp the welding nails. However, when clamping the corrugated steel plate in this way, there will be a certain amount of dust and small particles on its surface, which will reduce the friction between the steel plate and the steel plate during clamping, thereby reducing the clamping effect. Summary of the invention

[0004] The object of the present invention is to provide a stud welding device for corrugated steel plates for roofing used in metallurgical plant construction, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stud welding device for corrugated steel plate roofs used in metallurgical plant construction comprises a column and a base fixedly installed at the bottom of the column, a bracket is fixedly connected to the front of the column, and a welding device is arranged on the side of the column.

[0007] An auxiliary positioning mechanism is arranged on the top of the bracket; the auxiliary positioning mechanism comprises a feeding unit and a clamping unit.

[0008] The clamping unit includes a mounting platform, a hydraulic cylinder, a clamping plate 1, a clamping plate 2, a clamping block 1 and a clamping block 2. The mounting platform is fixedly mounted on the side of the column, the hydraulic cylinder is mounted on the top of the mounting platform, the clamping plate 1 is connected to the output end of the hydraulic cylinder, the clamping plate 2 is fixedly connected to one side of the clamping plate 1, and the clamping block 1 and the clamping block 2 are both arranged inside the clamping plate 2.

[0009] Preferably, the interior of the second clamping plate is sequentially provided with a cavity one and a cavity two, the first clamping block is slidably connected to the interior of the first cavity, and the second clamping block is slidably connected to the interior of the second cavity.

[0010] Preferably, a slide groove is provided on one side of the inner wall of the cavity, a slider is slidably connected inside the slide groove, and a telescopic spring is fixedly connected to one side of the clamping block. After welding is completed, the hydraulic cylinder is released and the restoring force of the telescopic spring itself pushes the clamping block to return to its original position and slide.

[0011] Preferably, a connecting pipe is opened inside the clamping block one, a suction cup is fixedly connected to one side of the clamping block one, a small gap is opened in the center of the suction cup, and the interior of the cavity two is connected with the outside world through the connecting pipe and the gap in the center of the suction cup. After the air is ejected through the gap in the center of the suction cup, the space inside the cavity one is completely compressed, and at this time the suction cup will be firmly adsorbed on the surface of the corrugated steel plate due to the negative pressure.

[0012] Preferably, an air vent is provided inside the second clamping plate, and the first cavity and the second cavity are connected through the air vent. A fixed magnetic block is fixedly installed inside the second clamping plate, and a sliding magnetic block is fixedly connected to one side of the inner side of the second clamping block, and the fixed magnetic block and the sliding magnetic block attract each other on their close sides.

[0013] Preferably, one side of the clamping block 2 is provided with an exhaust hole with a diameter smaller than the width of the clamping block 2, so that air will be quickly ejected from the exhaust hole to blow off the dust and small particles attached to the surface of the corrugated steel plate.

[0014] Preferably, the feeding unit includes a supporting seat, a slide rail, a sliding block, a load-bearing plate, a telescopic hose, a strong magnetic block and a magnetic plate, the supporting seat is fixedly connected to both sides of the bracket, the slide rail is fixedly connected to the top of the supporting seat, the sliding block is slidably connected to the upper surface of the slide rail, the load-bearing plate is fixedly connected to the side of the sliding block, the telescopic hose is fixedly connected to the back of the load-bearing plate, the strong magnetic block is fixedly connected to one end of the telescopic hose away from the load-bearing plate, and the magnetic plate is fixedly connected to the top of the bracket.

[0015] Preferably, the welding device includes a connecting plate, a cylinder 1, a lifting platform, a cylinder 2, a connecting arm and a welding head, the connecting plate is fixedly connected to the side of the column, the cylinder 1 is fixedly installed on the top of the connecting plate, the lifting platform is connected to the output end of the cylinder 1, the cylinder 2 is fixedly installed on the top of the lifting platform, the connecting arm is connected to the output end of the cylinder 2, and the welding head is installed at the end of the connecting arm away from the cylinder 2.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the corrugated steel plate stud welding device for corrugated roof waterproofing construction in the metallurgical plant, part of the air inside the cavity will enter the inside of the connecting pipe, and the air will be ejected from the inside of the connecting pipe through the gap in the center of the suction cup. Because the diameter of the gap in the center of the suction cup is much smaller than the diameter of the connecting pipe, the air will have a certain speed when it is ejected, which can blow off the dust and small particles attached to the surface of the corrugated steel plate, thereby improving the cleanliness of the surface of the corrugated steel plate, so that the clamping block can firmly clamp the corrugated steel plate.

[0018] 2. In the corrugated steel plate stud welding device for corrugated roof waterproofing construction in the metallurgical plant, another part of the air inside cavity one will enter the air duct from the slide groove and enter the inside of clamping block two under the subsequent air compression. Because an exhaust hole with a diameter smaller than the width of clamping block two is opened on one side of clamping block two, air will be quickly ejected from the exhaust hole to blow off the dust and small particles attached to the surface of the corrugated steel plate, further improving the cleanliness of the surface of the corrugated steel plate, so that the clamping block one clamps the corrugated steel plate more firmly.

[0019] 3. The corrugated steel plate stud welding device for the corrugated roof waterproofing construction of the metallurgical plant, another part of the air inside the cavity one will enter the air duct from the slide groove and enter the cavity two under the subsequent air compression, and the clamping block two will be pushed by the air to slide inside the cavity two. After the clamping block two slides out of the cavity two, it will contact the surface of the corrugated steel plate, thereby increasing the contact area, making the corrugated steel plate clamped more firmly, and further improving the clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the side structure of the column of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the welding device of the present invention;

[0023] Figure 4 It is a schematic diagram of the support structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the slide rail structure of the present invention;

[0025] Figure 6 for Figure 5 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 7 It is a structural schematic diagram of the load-bearing plate of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the clamping device of the present invention;

[0028] Fig. 9 It is a cross-sectional view of the clamping block of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Column; 2. Base; 3. Connecting plate; 301. Cylinder 1; 302. Lifting platform; 303. Cylinder 2; 304. Connecting arm; 305. Welding head; 4. Bracket; 401. Support seat; 402. Slide rail; 403. Sliding block; 404. Load-bearing plate; 405. Telescopic hose; 406. Strong magnetic block 1; 407. Magnetic plate; 5. Mounting platform; 501. Hydraulic cylinder; 502. Clamp 1; 503. Clamp 2; 5031. Cavity 1; 5032. Sliding block; 5033. Telescopic spring; 5034. Slide; 5035. Air duct; 504. Clamping block 1; 5041. Suction cup; 5042. Connecting pipe; 505. Clamping block 2; 5051. Cavity 2; 5052. Sliding magnetic block; 5053. Fixed magnetic block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides a technical solution: Figure 1-Figure 9 As shown, embodiment 1: a stud welding device for corrugated steel plate for roofing used in metallurgical plant construction, comprising a column 1 and a base 2 fixedly mounted at the bottom of the column 1, a bracket 4 fixedly connected to the front of the column 1, and a welding device arranged on the side of the column 1;

[0033] An auxiliary positioning mechanism is provided on the top of the bracket 4; the auxiliary positioning mechanism includes a feeding unit and a clamping unit;

[0034] The clamping unit includes a mounting platform 5, a hydraulic cylinder 501, a clamping plate 1 502, a clamping plate 2 503 and a clamping block 1 504. The mounting platform 5 is fixedly mounted on the side of the column 1, the hydraulic cylinder 501 is mounted on the top of the mounting platform 5, the clamping plate 1 502 is connected to the output end of the hydraulic cylinder 501, the clamping plate 2 503 is fixedly connected to one side of the clamping plate 1 502, and the clamping block 1 504 is arranged inside the clamping plate 2 503.

[0035] The interior of the second clamping plate 503 is provided with a cavity 1 5031 and a cavity 2 5051 in sequence, the clamping block 1 504 is slidably connected to the interior of the cavity 1 5031, the interior of the cavity 2 5051 is slidably connected to the clamping block 2 505, the interior of the clamping block 2 505 is hollow, and one side of the clamping block 2 505 is provided with an exhaust hole with a diameter smaller than the width of the clamping block 2 505.

[0036] A slide groove 5034 is provided on one side of the inner wall of the cavity 5031, and a slider 5032 is slidably connected inside the slide groove 5034. A telescopic spring 5033 is fixedly connected to one side of the clamping block 504. When clamping, the clamping block 504 slides inside the cavity 5031, which pushes the slider 5032 to slide inside the slide groove 5034. The telescopic spring 5033 is squeezed by the clamping block 504 to the maximum compression amount. After welding is completed, the hydraulic cylinder 501 is released, and under the action of the restoring force of the telescopic spring 5033 itself, the clamping block 504 is pushed to return to slide, so that outside air enters the cavity 5031.

[0037] A connecting pipe 5042 is provided inside the clamping block 1 504, and a suction cup 5041 is fixedly connected to one side of the clamping block 1 504. A small gap is provided in the center of the suction cup 5041, and the interior of the cavity 2 5051 is connected to the outside through the connecting pipe 5042 and the gap in the center of the suction cup 5041. An air duct 5035 is provided inside the clamping plate 2 503, and the cavity 1 5031 and the cavity 2 5051 are connected through the air duct 5035, and the air duct 5035 is connected to the interior of the clamping block 2 505. After the air is ejected through the gap in the center of the suction cup 5041, the space inside the cavity 1 5031 is completely compressed. At this time, the suction cup 5041 will be firmly adsorbed on the surface of the corrugated steel plate due to the negative pressure, thereby enhancing the clamping effect of the clamping block 1 504 on the corrugated steel plate.

[0038] The feeding unit includes a supporting seat 401, a slide rail 402, a sliding block 403, a load-bearing plate 404, a telescopic hose 405, a strong magnetic block 406 and a magnetic plate 407. The supporting seat 401 is fixedly connected to both sides of the bracket 4, the slide rail 402 is fixedly connected to the top of the supporting seat 401, the sliding block 403 is slidably connected to the upper surface of the slide rail 402, the load-bearing plate 404 is fixedly connected to the side of the sliding block 403, the telescopic hose 405 is fixedly connected to the back of the load-bearing plate 404, the strong magnetic block 406 is fixedly connected to the end of the telescopic hose 405 away from the load-bearing plate 404, the magnetic plate 407 is fixedly connected to the top of the bracket 4, the strong magnetic block 406 and the magnetic plate 407 are attracted to each other on their close sides, and the strong magnetic block 406 and the magnetic plate 407 will pull the telescopic hose 405 to extend when adsorbed, the slide rail 402 is provided with two symmetrical rows, and both sides of the load-bearing plate 404 are slidably connected to the sliding block 403.

[0039] The welding device includes a connecting plate 3, a cylinder 1 301, a lifting platform 302, a cylinder 2 303, a connecting arm 304 and a welding head 305. The connecting plate 3 is fixedly connected to the side of the column 1, the cylinder 1 301 is fixedly installed on the top of the connecting plate 3, the lifting platform 302 is connected to the output end of the cylinder 1 301, the cylinder 2 303 is fixedly installed on the top of the lifting platform 302, the connecting arm 304 is connected to the output end of the cylinder 2 303, and the welding head 305 is installed at one end of the connecting arm 304 away from the cylinder 2 303. The welding device is a prior art and its principle will not be repeated here.

[0040] Embodiment 2: The interior of the clamping block 505 is a solid structure, and no exhaust hole is provided on one side. A fixed magnetic block 5053 is fixedly installed inside the clamping plate 503, and a sliding magnetic block 5052 is fixedly connected to one side of the interior of the clamping block 505. The fixed magnetic block 5053 and the sliding magnetic block 5052 are attracted to each other on their close sides, and another part of the air inside the cavity 1 5031 will enter the air duct 5035 from the slide groove 5034 and enter the interior of the cavity 2 5051 under the subsequent air compression. Because there is a certain distance between the fixed magnetic block 5053 and the sliding magnetic block 5052, the attraction between them is weakened. Therefore, under the push of air, the clamping block 505 is pushed to slide inside the cavity 2 5051. After the clamping block 505 slides out of the cavity 2 5051, it will contact the surface of the corrugated steel plate, thereby increasing the contact area, making the corrugated steel plate clamped more firmly, and further improving the clamping effect.

[0041] When welding the corrugated steel plate and the steel beam, first place the corrugated steel plate on the top of the load-bearing plate 404, then push the load-bearing plate 404 to drive the two sliding blocks 403 to slide on the upper surface of the slide rail 402, and push the corrugated steel plate to the position where welding is required. At this time, the strong magnetic block 406 and the magnetic plate 407 are close to each other, and the magnetic plate 407 will attract the strong magnetic block 406 to move toward the magnetic plate 407 and adsorb together, thereby fixing the load-bearing plate 404 and the sliding block 403.

[0042] Then start the hydraulic cylinder 501, so that the clamping plate 1 502 and the clamping plate 2 503 are close to one side of the hydraulic cylinder 501, and before the clamping plate 2 503 contacts the side of the corrugated steel plate, the clamping block 1 504 will first contact the corrugated steel plate, and the corrugated steel plate squeezes the clamping block 1 504 to slide inside the cavity 1 5031, and a part of the air inside the cavity 1 5031 will enter the inside of the connecting pipe 5042, and the air will be ejected from the inside of the connecting pipe 5042 through the gap in the center of the suction cup 5041. Because the diameter of the gap in the center of the suction cup 5041 is much smaller than the diameter of the connecting pipe 5042, the air will have a certain speed when it is ejected, which can blow off the dust and small particles attached to the surface of the corrugated steel plate covered by the suction cup 5041, thereby improving the cleanliness of the surface of the corrugated steel plate and making the clamping block 1 504 clamp the corrugated steel plate firmly.

[0043] Another part of the air inside cavity 1 5031 will enter the air duct 5035 from the slide groove 5034 and enter the interior of clamping block 2 505 under the compression of subsequent air. Because one side of clamping block 2 505 is provided with an exhaust hole with a diameter smaller than the width of clamping block 2 505, air will be quickly ejected from the exhaust hole to blow off the dust and small particles attached to the surface of the corrugated steel plate, further improving the cleanliness of the surface of the corrugated steel plate, making the clamping block 1 504 clamp the corrugated steel plate more firmly. After clamping the corrugated steel plate, the welding nail is placed at the position to be welded, and the position of the connecting arm 304 and the welding head 305 is changed by starting cylinder 1 301 and cylinder 2 303, so that welding is carried out after the welding head 305 contacts the corrugated steel plate and the welding nail.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] It will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of the invention being defined by the appended claims and their equivalents.

Claims

1. A stud welding device for corrugated steel plate roofs for metallurgical plant construction, comprising a column (1) and a base (2) fixedly mounted at the bottom of the column (1), characterized in that: A bracket (4) is fixedly connected to the front of the column (1), and a welding device is provided on the side of the column (1); An auxiliary positioning mechanism is provided on the top of the bracket (4); the auxiliary positioning mechanism comprises a feeding unit and a clamping unit; The feeding unit comprises a support seat (401), a slide rail (402), a sliding block (403), a bearing plate (404), a telescopic hose (405), a strong magnetic block (406) and a magnetic plate (407); the support seat (401) is fixedly connected to both sides of the bracket (4); the slide rail (402) is fixedly connected to the top of the support seat (401); the sliding block (403) is slidably connected to the upper surface of the slide rail (402); the bearing plate (404) is fixedly connected to the side of the sliding block (403); the telescopic hose (405) is fixedly connected to the back of the bearing plate (404); the strong magnetic block (406) is fixedly connected to one end of the telescopic hose (405) away from the bearing plate (404); and the magnetic plate (407) is fixedly connected to the top of the bracket (4); The clamping unit comprises a mounting platform (5), a hydraulic cylinder (501), a clamping plate 1 (502), a clamping plate 2 (503), a clamping block 1 (504) and a clamping block 2 (505); the mounting platform (5) is fixedly mounted on the side of the column (1); the hydraulic cylinder (501) is mounted on the top of the mounting platform (5); the clamping plate 1 (502) is connected to the output end of the hydraulic cylinder (501); the clamping plate 2 (503) is fixedly connected to one side of the clamping plate 1 (502); and the clamping block 1 (504) and the clamping block 2 (505) are both arranged inside the clamping plate 2 (503).

2. A stud welding device for corrugated steel plates for roofing used in metallurgical plant construction according to claim 1, characterized in that: The interior of the second clamping plate (503) is provided with cavity one (5031) and cavity two (5051) in sequence, the first clamping block (504) is slidably connected to the interior of cavity one (5031), and the second clamping block (505) is slidably connected to the interior of cavity two (5051).

3. A stud welding device for corrugated steel plates for roofing used in metallurgical plant construction according to claim 2, characterized in that: A slide groove (5034) is provided on one side of the inner wall of the cavity one (5031), and a slider (5032) is slidably connected inside the slide groove (5034), and the slider (5032) is fixedly mounted on a side wall of the clamping block one (504) located inside the cavity one (5031); A telescopic spring (5033) is fixedly connected to one side of the clamping block 1 (504), and the telescopic spring (5033) is installed inside the cavity 1 (5031).

4. A stud welding device for corrugated steel plate for roofing used in metallurgical plant construction according to claim 3, characterized in that: A connecting pipe (5042) is provided inside the clamping block 1 (504), a suction cup (5041) is fixedly connected to one side of the clamping block 1 (504), and a small gap is provided in the center of the suction cup (5041); The interior of the second cavity (5051) is connected to the outside world through the connecting pipe (5042) and the gap in the center of the suction cup (5041).

5. A stud welding device for corrugated steel plate for roofing used in metallurgical plant construction according to claim 4, characterized in that: The second clamping plate (503) is provided with an air passage (5035) inside, and the first cavity (5031) and the second cavity (5051) are connected via the air passage (5035); A fixed magnetic block (5053) is fixedly installed inside the second clamping plate (503), and a sliding magnetic block (5052) is fixedly connected to one side of the inside of the second clamping block (505).

6. The device for stud welding of corrugated steel plates for roofing used in metallurgical plant construction according to claim 1, characterized in that: A vent hole having a diameter smaller than the width of the clamping block 2 (505) is provided on one side of the clamping block 2 (505).

7. The device for stud welding of corrugated steel plates for roofing used in metallurgical plant construction according to claim 1, characterized in that: The welding device comprises a connecting plate (3), a cylinder 1 (301), a lifting platform (302), a cylinder 2 (303), a connecting arm (304) and a welding head (305); the connecting plate (3) is fixedly connected to the side of the column (1); the cylinder 1 (301) is fixedly installed on the top of the connecting plate (3); the lifting platform (302) is connected to the output end of the cylinder 1 (301); the cylinder 2 (303) is fixedly installed on the top of the lifting platform (302); the connecting arm (304) is connected to the output end of the cylinder 2 (303); and the welding head (305) is installed at one end of the connecting arm (304) away from the cylinder 2 (303).

8. A construction method for a stud welding device for a corrugated steel plate roof for use in metallurgical plant construction, characterized in that: When welding the corrugated steel plate to the steel beam, the following steps are included: First, the corrugated steel sheet is placed on the top of the load-bearing plate (404), and then the load-bearing plate (404) is pushed to drive the two sliding blocks (403) to slide on the upper surface of the slide rail (402), and the corrugated steel sheet is pushed to the position to be welded. At this time, the strong magnetic block 1 (406) and the magnetic plate (407) are attracted to each other on the side close to each other, and the magnetic plate (407) attracts the strong magnetic block 1 (406) to move toward the magnetic plate (407) and adsorb together, thereby fixing the load-bearing plate (404) and the sliding blocks (403); Then, the hydraulic cylinder (501) is started, so that the clamping plate 1 (502) and the clamping plate 2 (503) are moved closer to one side of the hydraulic cylinder (501). Before the clamping plate 2 (503) contacts the side of the corrugated steel plate, the clamping block 1 (504) will first contact the corrugated steel plate. The corrugated steel plate squeezes the clamping block 1 (504) to slide inside the cavity 1 (5031), and part of the air inside the cavity 1 (5031) will enter the inner part of the connecting pipe (5042). The air is ejected from the inside of the connecting pipe (5042) through the gap in the center of the suction cup (5041). Since the diameter of the gap in the center of the suction cup (5041) is much smaller than the diameter of the connecting pipe (5042), the air will have a certain speed when ejecting, and the dust and small particles attached to the surface of the corrugated steel sheet covered by the suction cup (5041) can be blown off, thereby improving the cleanliness of the surface of the corrugated steel sheet and making the clamping block (504) clamp the corrugated steel sheet firmly. Another part of the air inside cavity one (5031) will enter the air passage (5035) from the slide groove (5034) and enter the inside of clamping block two (505) under the compression of subsequent air. Because one side of clamping block two (505) is provided with an exhaust hole with a diameter smaller than the width of clamping block two (505), air will be quickly ejected from the exhaust hole to blow off the dust and small particles attached to the surface of the corrugated steel plate, further improving the cleanliness of the surface of the corrugated steel plate, making the clamping block one (504) clamp the corrugated steel plate more firmly. After the corrugated steel plate is clamped, the welding nail is placed at the position to be welded, and the position of the connecting arm (304) and the welding head (305) is changed by starting cylinder one (301) and cylinder two (303), so that the welding head (305) contacts the corrugated steel plate and the welding nail and then welding is carried out.

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