Metal machining welding device

Abstract

The invention relates to the technical field of metal welding, in particular to a metal machining welding device which comprises a welding base, supporting parts and clamping parts, the supporting parts are fixedly installed at the left end and the right end of the top of the welding base, and the clamping parts are movably arranged in the two supporting parts. The clamping component clamps and fixes the top of the metal pipe to prevent the metal pipe from loosening in the welding process, and meanwhile drives the inflatable soft bag to be continuously pulled out of the bottom of the air sleeve, so that negative pressure is continuously generated in the air sleeve, negative pressure is further generated in the area, below the piston, in the cylinder barrel, and the piston moves downwards along the inner wall of the cylinder barrel. Under the connecting action of the ejector rod, the fixing base and the blocking piece are driven to move downwards, the blocking piece is pulled out of the position between the two metal pipes, at the moment, the two positioned metal pipes cannot move any more, and due to the fact that the blocking piece is pulled out of the position between the two metal pipes before welding, welding slag can be prevented from being splashed to the surface of the blocking piece in the welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of metal welding, and specifically to a metal processing and welding device. Background Art

[0002] For the welding of metal round tubes, it is usually necessary to use a cage to bring two metal round tubes to be welded closer to each other and maintain a concentric state, and then use a welding torch for circular welding treatment; According to a Chinese patent with the application publication number 202310650716.5, a metal processing and welding device is disclosed. By designing a semi-circular partition plate on the arc side, during the welding process of two metal round tubes, the welded part can be directly pushed out through the arc surface of the semi-circular partition plate, so that the semi-circular partition plate is no longer inside the weld seam, effectively avoiding the situation where the partition plate gets stuck inside the weld seam. After using the above welding device, it is found that the partition plate of the welding device is not easy to withdraw during the welding process, and welding slag is easily attached to the partition plate and difficult to clean. Therefore, we propose a metal processing and welding device to solve the above technical problems. Summary of the Invention

[0003] The present invention provides the following technical solutions: A metal processing and welding device, comprising: Welding base; Support components, fixedly installed at the left and right ends of the top of the welding base, and the support components are used for supporting metal parts; Clamping components, movably arranged inside the two support components, and the clamping components are used for clamping metal parts and positioning weld seams.

[0004] As a preferred solution of the present invention, the support components include: Gantry, fixedly installed at the left and right ends of the top of the welding base; Bearing seats, fixedly installed at the left and right ends of the front part and the left and right ends of the rear part of the gantry; Support shafts, rotatably installed inside the left and right bearing seats; First support wheels, fixedly installed on the outer wall of the support shafts and located between the left and right bearing seats; Servo motor, fixedly installed on the top of the welding base; Active pulley, fixedly installed on the output shaft of the servo motor; Driven pulley, fixedly installed on the outer wall of one of the support shafts; Belt, sleeved around the active pulley and the driven pulley.

[0005] As a preferred solution of the present invention, the clamping components include: The floating plate is slidably installed inside the left and right gantries respectively; The loading plate is fixedly installed at the bottom of the floating plate; The pressing wheel is rotatably installed on the inner side of the loading plate and is located at the bottom of the floating plate; The support rods are fixedly installed at the front end and the rear end of the top of the floating plate in a left-right distribution form; The air sleeve is fixedly installed at the top of the left and right support rods, and an opening is provided at the bottom of the air sleeve; The inflatable soft bag is movably arranged inside the air sleeve, and the outer wall of the inflatable soft bag is slidably connected to the inner wall of the bottom opening of the air sleeve; The pressing plate is fixedly installed at the bottom of the front and rear inflatable soft bags; The guide posts are fixedly installed at the top of the floating plate in a front-rear distribution; The first spring is sleeved around the guide post and is fixedly installed between the top of the floating plate and the bottom of the pressing plate; The cylinder is fixedly installed at the top of the gantry, and the bottom of the output rod of the cylinder is fixedly connected to the top of the floating plate.

[0006] As a preferred solution of the present invention, the clamping component further includes: The cylinder barrel is fixedly installed at the middle position of the bottom of the welding base; The piston is slidably installed inside the cylinder barrel; The ejector rod is fixedly installed at the top of the piston, and movably penetrates through the welding base and extends to the periphery of its top; The fixed seat is fixedly installed at the top of the ejector rod; The retaining piece is fixedly installed at the top of the fixed seat.

[0007] As a preferred solution of the present invention, the clamping component further includes: The first joint is fixedly installed at the upper part of the outer wall of the air sleeve and is communicated with the inside of the air sleeve; The manifold is fixedly installed at one end of the first joint away from the air sleeve; The three-way joint is fixedly installed at the upper part of the outer side of the gantry, and one end of the cylinder is fixedly connected to the end of the manifold away from the first joint; The second joint is fixedly installed at the lower part of the outer wall of the cylinder barrel and is communicated with the inside of the cylinder barrel; The main pipe is fixedly installed between the second joint and the three-way joint.

[0008] As a preferred solution of the present invention, a second support wheel is fixedly installed at one end of the support shaft away from the first support wheel, and the diameter of the second support wheel is equal to the diameter of the first support wheel.

[0009] As a preferred solution of the present invention, chutes are penetrated and provided on both the front and back surfaces of the gantry, sliders are fixedly installed at both the front end and the rear end of the floating plate, and the sliders are slidably installed inside the chutes.

[0010] As a preferred solution of the present invention, a plurality of second springs are fixedly installed on the upper part of the outer wall of the inflatable soft bag and are circumferentially and arrayed at equal angles, and the tops of the second springs are fixedly connected to the upper part of the inner wall of the air sleeve.

[0011] As a preferred solution of the present invention, a fixed pile is fixedly installed at the rear end of the top of the welding base, a welding torch is fixedly installed inside the fixed pile, and the welding torch penetrates through the inside of the fixed pile and extends to the front end of the front surface of the fixed pile.

[0012] As a preferred solution of the present invention, a square pipe frame is fixedly installed at the bottom of the welding base.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the top of the metal pipe is clamped and fixed by the clamping component to prevent it from loosening during the welding process. At the same time, the inflatable soft bag is continuously pulled out from the bottom of the air sleeve, resulting in a continuous negative pressure effect inside the air sleeve. Further, a negative pressure is generated in the area below the piston inside the cylinder barrel, causing the piston to move downward along the inner wall of the cylinder barrel. Further, under the connection action of the ejector rod, the fixed seat and the baffle are driven to move downward, so that the baffle is withdrawn from between the two sections of metal pipes. At this time, the two sections of metal pipes that have been positioned will no longer move. And since the baffle is withdrawn from between the two sections of metal pipes before welding, it is possible to prevent the welding slag from splashing onto the surface of the baffle during the welding process.

[0014] 2. In the present invention, after the welding is completed, during the upward reset process of the output rod of the cylinder, the inflatable soft bag is pulled by the resilience of the second spring to move from the opening at the bottom of the air sleeve into the air sleeve, compensating the air pressure inside the air sleeve again, so that the air pressure inside the cylinder barrel is compensated, and the piston is pushed to move upward for reset. The upward reset of the piston drives the ejector rod, the fixed seat and the baffle to move upward together, restoring the position of the baffle for subsequent continuous welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the present invention from a planar perspective; Figure 3 is a schematic structural diagram in the present invention; Figure 4 is in the present invention Figure 3 an enlarged schematic structural diagram of part A; Figure 5 is a schematic side-sectional structural diagram of the cylinder barrel in the present invention; Figure 6 Schematic diagram of the detailed structure of the clamping component in the present invention; Figure 7 In the present invention Figure 6 Schematic diagram of the partial structure; Figure 8 In the present invention Figure 7 Enlarged schematic diagram of part B.

[0016] In the figure: 100, welding base; 200, support component; 201, gantry; 2001, sliding groove; 202, bearing seat; 203, support shaft; 204, first support wheel; 205, servo motor; 206, driving pulley; 207, driven pulley; 208, belt; 209, second support wheel; 300, clamping component; 301, floating plate; 302, loading plate; 303, pressing wheel; 304, support rod; 305, air sleeve; 306, inflatable soft bag; 307, pressing plate; 308, guiding column; 309, first spring; 3010, cylinder; 3011, first joint; 3012, manifold; 3013, tee; 3014, cylinder barrel; 3015, second joint; 3016, main pipe; 3017, piston; 3018, ejector rod; 3019, fixed seat; 3020, retaining piece; 3021, slider; 3022, second spring; 400, fixed pile; 401, welding torch; 500, square pipe frame. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0018] Please refer to Figures 1 to 8 , the technical solutions provided by the present invention specifically include the following embodiments: A metal processing and welding device includes a welding base 100, a support component 200, and a clamping component 300. The support component 200 is fixedly installed at the left and right ends of the top of the welding base 100. The support component 200 is used for supporting metal parts. The clamping component 300 is movably arranged inside the two support components 200. The clamping component 300 is used for clamping metal parts and positioning weld seams. A fixed pile 400 is fixedly installed at the rear end of the top of the welding base 100. A welding torch 401 is fixedly installed inside the fixed pile 400. The welding torch 401 penetrates through the inside of the fixed pile 400 and extends to the front end of the front of the fixed pile 400 for metal welding. A square pipe frame 500 is fixedly installed at the bottom of the welding base 100.

[0019] Further, specifically referring to Figure 4 , Figure 5 and Figure 6 as shown in The supporting component 200 includes a gantry 201, a bearing block 202, a support shaft 203, a first support wheel 204, a servo motor 205, a driving pulley 206, a driven pulley 207 and a belt 208. The gantry 201 is fixedly installed at the left and right ends of the top of the welding base 100 and the left and right ends of the rear part of the front of the gantry 201. The bearing block 202 is fixedly installed at the left and right ends of the front part and the left and right ends of the rear part of the gantry 201. The support shaft 203 is rotatably installed inside the left and right bearing blocks 202. The first support wheel 204 is fixedly installed on the outer wall of the support shaft 203 and is located between the left and right bearing blocks 202. The servo motor 205 is fixedly installed on the top of the welding base 100. The driving pulley 206 is fixedly installed on the output shaft of the servo motor 205. The driven pulley 207 is fixedly installed on the outer wall of one of the support shafts 203. The belt 208 is sleeved around the driving pulley 206 and the driven pulley 207. A second support wheel 209 is fixedly installed at one end of the support shaft 203 away from the first support wheel 204. The diameter of the second support wheel 209 is equal to the diameter of the first support wheel 204; The clamping component 300 includes a floating plate 301, a loading plate 302, a pressure wheel 303, a support rod 304, an air sleeve 305, an inflatable soft bag 306, a pressing plate 307, a guide post 308, a first spring 309 and a cylinder 3010. The floating plate 301 is respectively slidably installed inside the left and right gantries 201. The loading plate 302 is fixedly installed at the bottom of the floating plate 301. The pressure wheel 303 is rotatably installed on the inner side of the loading plate 302 and is located at the bottom of the floating plate 301. The support rods 304 are fixedly installed at the front end and the rear end of the top of the floating plate 301 in a left-right distribution form. The air sleeve 305 is fixedly installed at the top of the left and right support rods 304. There is an opening at the bottom of the air sleeve 305. The inflatable soft bag 306 is movably arranged inside the air sleeve 305. The outer wall of the inflatable soft bag 306 is slidably connected to the inner wall of the bottom opening of the air sleeve 305. The pressing plate 307 is fixedly installed at the bottom of the front and rear inflatable soft bags 306. The guide posts 308 are fixedly installed at the top of the floating plate 301 in a front-rear distribution. The first spring 309 is sleeved around the guide post 308 and is fixedly installed between the top of the floating plate 301 and the bottom of the pressing plate 307. The cylinder 3010 is fixedly installed at the top of the gantry 201. The bottom of the output rod of the cylinder 3010 is fixedly connected to the top of the floating plate 301. Through grooves 2001 are respectively formed in the front and back surfaces of the gantry 201. Sliders 3021 are respectively fixedly installed at the front end and the rear end of the floating plate 301. The sliders 3021 are slidably installed inside the through grooves 2001.

[0020] Specifically, place the two metal pipes to be welded between the tops of two first support wheels 204 at the left end and the right end of the top of the welding base 100. Support the metal pipes by the two front and rear first support wheels 204. At the same time, the metal pipes are also supported by two second support wheels 209 to ensure the stability of the metal pipes. Subsequently, adjust the positions of the two metal pipes to ensure that the end faces of the welding ends of the two metal pipes are respectively in contact with the left side and the right side of the baffle 3020. Immediately afterwards, start the two left and right cylinders 3010. The output rods of the two cylinders 3010 push the two floating plates 301 downward. During this period, since the floating plates 301 are slidably connected to the two front and rear chutes 2001 through the two front and rear sliders 3021, it can ensure that the floating plates 301 move downward more stably and smoothly. The downward movement of the two floating plates 301 also drives the pressing plate 307 downward, and under the elastic force of the first spring 309, further drives the floating plates 301, the loading plate 302, and the pressing wheel 303 downward. Make the bottom of the pressing wheel 303 abut against the top of the metal pipe. Thus, under the action of the triangular limiting structure formed by the two front and rear first support wheels 204 and the pressing wheel 303, the metal pipe is clamped and constrained to prevent the metal pipe from loosening during the processing.

[0021] Further, specifically refer to Figures 5 to 8 as shown: The clamping component 300 further includes a first joint 3011, a manifold 3012, a tee 3013, a cylinder barrel 3014, a second joint 3015, a main pipe 3016, a piston 3017, a push rod 3018, a fixed seat 3019, and a baffle 3020. The cylinder barrel 3014 is fixedly installed at the middle position of the bottom of the welding base 100. The piston 3017 is slidably installed inside the cylinder barrel 3014. The push rod 3018 is fixedly installed at the top of the piston 3017, and movably penetrates through the welding base 100 and extends to the periphery of its top. The fixed seat 3019 is fixedly installed at the top of the push rod 3018. The baffle 3020 is fixedly installed at the top of the fixed seat 3019. The first joint 3011 is fixedly installed on the upper part of the outer wall of the air sleeve 305 and is communicated with the inside of the air sleeve 305. The manifold 3012 is fixedly installed at the end of the first joint 3011 away from the air sleeve 305. The tee 3013 is fixedly installed on the upper part of the outer side of the gantry 201. One end of the cylinder 3010 is fixedly connected to the end of the manifold 3012 away from the first joint 3011. The second joint 3015 is fixedly installed on the lower part of the outer wall of the cylinder barrel 3014 and is communicated with the inside of the cylinder barrel 3014. The main pipe 3016 is fixedly installed between the second joint 3015 and the tee 3013.

[0022] Specifically, the output rod of the air cylinder 3010 continues to push the floating plate 301 downward. Since the pressure wheel 303 abuts against the top of the metal pipe and cannot move downward continuously, the loading plate 302, the floating plate 301, etc. stop moving downward. As the floating plate 301 continues to move downward, the first spring 309 is compressed and undergoes elastic deformation. At the same time, the downward movement of the floating plate 301 will pull the bottom of the inflatable soft bag 306, causing the inflatable soft bag 306 to continuously extend downward from the opening at the bottom of the air sleeve 305. Since the inflatable soft bag 306 is continuously pulled out from the bottom of the air sleeve 305, a negative pressure is continuously generated inside the air sleeve 305, which is further transmitted to the inside of the cylinder barrel 3014 through the connection of the first connector 3011, the manifold 3012, the tee joint 3013, the main pipe 3016, and the second connector 3015. As a result, a negative pressure is generated in the area below the piston 3017 inside the cylinder barrel 3014, causing the piston 3017 to move downward along the inner wall of the cylinder barrel 3014. Further, under the connection of the ejector rod 3018, the fixed seat 3019 and the retaining piece 3020 are driven to move downward, so that the retaining piece 3020 is withdrawn from between the two metal pipes. At this time, the two positioned metal pipes will no longer move. And since the retaining piece 3020 is withdrawn from between the two metal pipes before welding, it is possible to prevent welding slag from splashing onto the surface of the retaining piece 3020 during the welding process.

[0023] Further, specifically referring to Figure 8 as shown: A plurality of second springs 3022 are fixedly installed on the upper part of the outer wall of the inflatable soft bag 306 and are evenly distributed in a circumferential array at equal angles. The tops of the second springs 3022 are fixedly connected to the upper part of the inner wall of the air sleeve 305.

[0024] Specifically, when the inflatable soft bag 306 is pulled downward, a plurality of second springs 3022 are stretched and undergo elastic deformation. After the welding is completed, during the process of the output rod of the air cylinder 3010 resetting upward, the inflatable soft bag 306 is pulled into the air sleeve 305 from the opening at the bottom of the air sleeve 305 by the resilience of the second springs 3022, compensating the air pressure inside the air sleeve 305 again, enabling the air pressure inside the cylinder barrel 3014 to be compensated, and pushing the piston 3017 to move upward and reset. The upward reset of the piston 3017 drives the ejector rod 3018, the fixed seat 3019, and the retaining piece 3020 to move upward together, restoring the position of the retaining piece 3020 for subsequent continuous welding.

[0025] When a metal processing and welding device of this solution is working, two metal pipes to be welded are placed between the tops of two first support wheels 204 at the left end and the right end of the top of the welding base 100. The two first support wheels 204 in the front and back provide support for the metal pipes. At the same time, the metal pipes are also supported by two second support wheels 209 to ensure the stability of the metal pipes. Subsequently, the positions of the two metal pipes are adjusted to ensure that the end faces of the welding ends of the two metal pipes are respectively abutted against the left side face and the right side face of the baffle 3020. Immediately afterwards, the two cylinders 3010 on the left and right are started. The output rods of the two cylinders 3010 push the two floating plates 301 downward. During this period, since the floating plates 301 are slidably connected to the two chutes 2001 in the front and back through the two sliders 3021 in the front and back, it can be ensured that the floating plates 301 move downward more stably and smoothly. The downward movement of the two floating plates 301 also drives the pressing plate 307 downward. Under the elastic force of the first spring 309, the floating plates 301, the loading plate 302, and the pressing wheel 303 are further driven downward. The bottom of the pressing wheel 303 abuts against the top of the metal pipe, so that the metal pipe is clamped and constrained under the action of the triangular limiting structure formed by the two first support wheels 204 in the front and back and the pressing wheel 303, so as to prevent the metal pipe from loosening during the processing; Continue to start the two cylinders 3010 on the left and right, so that their output rods continue to push the floating plates 301 downward. Since the pressing wheel 303 abuts against the top of the metal pipe and cannot continue to move downward, the loading plate 302 and the floating plates 301 and the like stop moving downward. As the floating plates 301 continue to move downward, the first spring 309 is compressed to generate elastic deformation. At the same time, the downward movement of the floating plates 301 will pull the bottom of the inflatable soft bag 306, so that the inflatable soft bag 306 continuously extends downward from the opening at the bottom of the air sleeve 305. A plurality of second springs 3022 are stretched to generate elastic deformation. At the same time, since the inflatable soft bag 306 is continuously pulled out from the bottom of the air sleeve 305, negative pressure is continuously generated inside the air sleeve 305, and further transmitted to the inside of the cylinder barrel 3014 through the connection of the first joint 3011, the manifold 3012, the three-way joint 3013, the main pipe 3016, and the second joint 3015, resulting in negative pressure in the area below the piston 3017 inside the cylinder barrel 3014, so that the piston 3017 moves downward along the inner wall of the cylinder barrel 3014, and further drives the fixed seat 3019 and the baffle 3020 downward under the connection of the ejector rod 3018, so that the baffle 3020 is withdrawn from between the two metal pipes. At this time, the two metal pipes that have been positioned will no longer move; Next, start the welding torch 401, and weld the two sections of metal pipes through the welding torch 401. At the same time, start the servo motor 205, drive the driving pulley 206 to rotate through the output shaft of the servo motor 205, and further drive the driven pulley 207 and the support shaft 203 connected thereto to rotate together under the connection of the belt 208, thereby driving the first support wheel 204 and the second support wheel 209 to rotate together, driving the metal pipe to rotate, and performing full welding of 360 degrees on the metal pipe.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A metal processing and welding device, characterized in that: Including: Welding base (100); Support components (200), fixedly installed at the top left end and top right end of the welding base (100), and the support components (200) are used for supporting metal parts; Clamping components (300), movably arranged inside the two support components (200), and the clamping components (300) are used for clamping metal parts and positioning weld seams.

2. The metal processing welding device according to claim 1, characterized in that: The support components (200) include: Gantry (201), fixedly installed at the top left end and top right end of the welding base (100); Bearing seats (202), fixedly installed at the left and right ends of the front part and the left and right ends of the rear part of the gantry (201); Support shafts (203), rotatably installed inside the left and right bearing seats (202); First support wheels (204), fixedly installed on the outer wall of the support shafts (203) and located between the left and right bearing seats (202); Servo motor (205), fixedly installed on the top of the welding base (100); Drive pulley (206), fixedly installed on the output shaft of the servo motor (205); Driven pulley (207), fixedly installed on the outer wall of one of the support shafts (203); Belt (208), sleeved around the drive pulley (206) and the driven pulley (207).

3. The metal processing welding device according to claim 2, characterized in that: The clamping components (300) include: Floating plates (301), respectively slidably installed inside the left and right gantries (201); Loading plates (302), fixedly installed at the bottom of the floating plates (301); Pressing wheels (303), rotatably installed on the inner side of the loading plates (302) and located at the bottom of the floating plates (301); Support rods (304), fixedly installed at the front end and rear end of the top of the floating plates (301) in a left-right distribution form; Air sleeves (305), fixedly installed at the top of the left and right support rods (304), and an opening is provided at the bottom of the air sleeves (305); Inflatable soft bags (306), movably arranged inside the air sleeves (305), and the outer wall of the inflatable soft bags (306) is slidably connected to the inner wall of the bottom opening of the air sleeves (305); Pressing plates (307), fixedly installed at the bottom of the front and rear inflatable soft bags (306); Guide columns (308), fixedly installed at the top of the floating plates (301) in a front-back distribution; First springs (309), sleeved around the guide columns (308) and fixedly installed between the top of the floating plates (301) and the bottom of the pressing plates (307); Cylinders (3010), fixedly installed on the top of the gantries (201), and the bottom of the output rod of the cylinders (3010) is fixedly connected to the top of the floating plates (301).

4. The metal processing welding device according to claim 3, characterized in that: The clamping components (300) further include: Cylinder barrels (3014), fixedly installed at the middle position of the bottom of the welding base (100); The piston (3017) is slidably installed inside the cylinder barrel (3014); The push rod (3018) is fixedly installed on the top of the piston (3017), movably penetrates through the welding base (100), and extends to the outer periphery of its top; The fixed seat (3019) is fixedly installed on the top of the push rod (3018); The retaining piece (3020) is fixedly installed on the top of the fixed seat (3019).

5. The metal processing welding device according to claim 4, characterized in that: The clamping member (300) further includes: The first joint (3011) is fixedly installed on the upper part of the outer wall of the air sleeve (305) and is communicated with the inside of the air sleeve (305); The manifold (3012) is fixedly installed at one end of the first joint (3011) away from the air sleeve (305); The tee joint (3013) is fixedly installed on the upper part of the outer side of the gantry (201), and one end of the cylinder (3010) is fixedly connected to one end of the manifold (3012) away from the first joint (3011); The second joint (3015) is fixedly installed on the lower part of the outer wall of the cylinder barrel (3014) and is communicated with the inside of the cylinder barrel (3014); The main pipe (3016) is fixedly installed between the second joint (3015) and the tee joint (3013).

6. The metal processing welding device according to claim 5, characterized in that: A second support wheel (209) is fixedly installed at one end of the support shaft (203) away from the first support wheel (204), and the diameter of the second support wheel (209) is equal to the diameter of the first support wheel (204).

7. The metal processing welding device according to claim 6, characterized in that: Chute grooves (2001) are respectively formed through the front and back surfaces of the gantry (201), and sliding blocks (3021) are respectively fixedly installed at the front and rear ends of the floating plate (301), and the sliding blocks (3021) are slidably installed inside the chute grooves (2001).

8. The metal processing welding device according to claim 7, characterized in that: A plurality of second springs (3022) are fixedly installed on the upper part of the outer wall of the inflatable soft bag (306) in an equiangular circumferential array, and the tops of the second springs (3022) are fixedly connected to the upper part of the inner wall of the air sleeve (305).

9. The metal processing welding device according to claim 8, characterized in that: A fixed pile (400) is fixedly installed at the rear end of the top of the welding base (100), a welding torch (401) is fixedly installed inside the fixed pile (400), and the welding torch (401) penetrates through the inside of the fixed pile (400) and extends to the front end of the front surface of the fixed pile (400).

10. The metal processing welding device according to claim 9, characterized in that: A square pipe frame (500) is fixedly installed at the bottom of the welding base (100).

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