An automated welding device and method for metal parts

Abstract

The present invention relates to the technical field of metal part welding, and specifically to an automatic welding device and method for metal parts, including a fixing unit and an alignment unit. The present invention cooperates the positioning frame with the first socket column, the second socket column and the third socket column to limit and fix the main pipe, ensuring that its welding hole is vertically upward. The first socket column, the second socket column and the third socket column are equidistantly distributed for a plurality of branch pipes through the distance adjusting frame, and the plurality of branch pipes are grouped and tightly butted vertically and with the center lines coinciding with the welding holes on the main pipe, and then welding is carried out. During the whole welding process, only one feeding is required to complete the welding of a single dust collector blowpipe, ensuring the welding quality and improving the welding efficiency at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of metal part welding, and particularly to an automatic welding device and method for metal parts. Background Technique

[0002] The blowpipe of the dust collector plays a crucial role in the dust removal process, mainly for dust cleaning, improving the filtration efficiency, and protecting the filter material. Therefore, its quality determines the dust removal effect. Here, a welding process is mainly carried out for a blowpipe of a dust collector. The blowpipe of the dust collector is mainly formed by welding a branch pipe and a main pipe. Therefore, the welding effect between the branch pipe and the main pipe determines the quality of the blowpipe of the dust collector.

[0003] In the traditional welding process, the welding hole of the main pipe is fixed with the hole opening facing vertically upward. Then, after aligning the branch pipe with the welding hole of the main pipe, welding is carried out one by one. The welding efficiency is relatively low. Moreover, since the welding position is between the outer wall of the branch pipe and the outside of the welding hole of the main pipe, when an error occurs and the center line of the branch pipe is not aligned with the center line of the welding hole of the main pipe, it is difficult to detect with the naked eye, resulting in a reduction in welding quality. In addition, the distances of the welding holes of the main pipe are not exactly the same, increasing the probability of the center line of the branch pipe not being aligned with the center line of the welding hole of the main pipe, further leading to a reduction in welding quality. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present application provide an automatic welding device and method for metal parts to solve the technical problems of reduced welding quality and reduced welding efficiency in the related art. To achieve the above object, the embodiments of the present application provide the following technical solutions.

[0005] An automatic welding device for metal parts according to an embodiment of the present application includes a fixing unit and an alignment welding unit. The alignment welding unit is arranged on the fixing unit and is used for aligning and welding between the branch pipe and the main pipe of the dust collector blowing pipe. The fixing unit includes a fixing table, an arc-shaped groove is formed on the fixing table, a positioning frame is arranged on the fixing table, a rectangular sliding groove is formed on the left side of the fixing table, and an electric slider is connected to the rectangular sliding groove in a sliding fit manner. The alignment welding unit includes a distance control cylinder. The upper end of the electric slider is fixedly installed with a distance control cylinder. The telescopic end of the distance control cylinder is fixedly installed with an L-shaped bracket. The longitudinal section of the L-shaped bracket from front to back is fixedly connected to the telescopic end of the distance control cylinder. A rotating frame is arranged on the front side of the transverse section of the L-shaped bracket. A rectangular plate is fixedly installed at the front end of the rotating frame. A first socket column is fixedly installed in the middle of the rectangular plate. On the rectangular plate and on both sides of the first socket column before and after, a second socket column and a third socket column are symmetrically connected to the rectangular plate in a sliding fit manner from near to far. An adjustable distance frame is jointly arranged on the first socket column, the second socket column and the third socket column. Electric welding heads are fixedly installed at the right ends of the first socket column, the second socket column and the third socket column. A driving frame is arranged at the upper end of the rectangular plate. A distance control frame is arranged on the driving frame. A linkage frame is arranged on the right side of the distance control frame. Pushing plates are evenly fixedly installed at the right end of the linkage frame.

[0006] According to an embodiment of the present invention, the positioning frame includes a circular abutting plate. Circular abutting plates are symmetrically connected to the arc-shaped groove on the fixing table in a sliding fit manner before and after. A bidirectional screw one is rotatably connected to the fixing table. The front and rear sides of the bidirectional screw one are connected to the adjacent circular abutting plates in a threaded connection manner. Rectangular pressing plates are symmetrically connected to the left and right sides of the arc-shaped groove on the fixing table in a sliding fit manner. A bidirectional screw two is rotatably connected to the middle of the fixing table. The left and right sides of the bidirectional screw two are connected to the adjacent rectangular pressing plates in a threaded connection manner.

[0007] According to an embodiment of the present invention, the rotating frame includes a second motor. The second motor is fixedly installed at the front end of the L-shaped bracket through a motor seat. The output shaft of the second motor is fixedly installed with a first bevel gear through a coupling. A rotating circular plate is rotatably connected to the front end of the L-shaped bracket. A sector groove with a central angle of 180° is formed at the rear end of the rotating circular plate. Tooth grooves matching the first bevel gear are evenly formed in the sector groove. A rectangular plate is fixedly installed at the front end of the rotating circular plate.

[0008] According to an embodiment of the present invention, the distance adjusting frame includes a moving block. A moving block is fixedly installed on the upper side of the second sleeve column. First connecting blocks are symmetrically and fixedly installed at the front and rear ends of the first sleeve column. Second connecting blocks are fixedly installed at the ends of the third sleeve column facing the first sleeve column. The first connecting blocks and the second connecting blocks on the same side are connected to the moving block in a sliding fit manner. The moving block is fixedly connected to the first connecting block and the second connecting block through cylindrical springs. Limit blocks are fixedly installed at the right ends of the third sleeve columns. A bidirectional screw rod three is rotatably connected to the rectangular plate. The front and rear sides of the bidirectional screw rod three are respectively connected to the adjacent limit blocks in a threaded connection manner.

[0009] According to an embodiment of the present invention, the driving frame includes a right-angle bracket. A right-angle bracket is fixedly installed at the upper end of the rectangular block. A positioning circular plate is fixedly installed at the lower end of the horizontal section of the right-angle bracket. A first motor is fixedly installed at the upper end of the horizontal section of the right-angle bracket through a motor seat. The output shaft of the first motor is fixedly installed with a cylindrical gear through a coupling. A rotating toothed ring is rotatably connected to the lower end of the positioning circular plate. The inner wall of the rotating toothed ring meshes with the cylindrical gear.

[0010] According to an embodiment of the present invention, the distance control frame includes a threaded rod. A threaded rod that rotates through the positioning circular plate is rotatably connected to the lower end of the horizontal section of the right-angle bracket. Connecting rods are circumferentially and uniformly fixedly installed at the outer end of the upper side of the threaded rod. The ends of the connecting rods are fixedly connected to the rotating toothed ring. A rectangular block is connected to the threaded rod in a threaded connection manner. A rotating ring is rotatably connected to the threaded rod and located below the connecting rods. A guide rod that slides through the rectangular block is fixedly installed at the lower left end of the rotating ring.

[0011] According to an embodiment of the present invention, the linkage frame includes a limiting plate. A limiting plate is fixedly installed at the right end of the rectangular block. A first fixing plate is fixedly installed in the middle of the limiting plate. A second fixing plate and a third fixing plate are symmetrically and slidably connected to the limiting plate on the front and rear sides of the first fixing plate from near to far. A compensation plate is fixedly installed at the left end of the second fixing plate. First compensation blocks are symmetrically and fixedly installed at the front and rear ends of the first fixing plate. Second compensation blocks are fixedly installed at the opposite ends of the two third fixing plates. The adjacent first compensation blocks and second compensation blocks are slidably connected to the corresponding compensation plate together. Fixed springs are fixedly connected between the first compensation blocks and the compensation plate and between the second compensation blocks and the compensation plate. A bent rod is fixedly installed at the left end of the second connecting block. The vertical section of the bent rod slides through the second compensation block. Pushing plates are fixedly installed at the lower right ends of the first fixing plate, the second fixing plate, and the third fixing plate; when the distance between the two limit blocks changes, driven by the bent rod, the distance between the front and rear second compensation blocks changes accordingly. With the cooperation of the first compensation blocks, the second compensation blocks, the compensation plate, and the fixed springs, the distances between the first fixing plate and the second fixing plate and between the second fixing plate and the third fixing plate are the same. The distance between the first fixing plate and the second fixing plate is the same as the distance between the first sleeve column and the second sleeve column.

[0012] According to an embodiment of the present invention, a control rod is rotatably connected to the middle of the first socket column. Multiple sections of spiral grooves are evenly formed on the control rod. A first sprocket is rotatably connected to the upper end of the control rod. The outer end of the first socket column is linearly and evenly provided with a set of protruding hole groups. Each set of protruding hole groups is composed of cylindrical holes evenly formed along the circumference of the first socket column. A protruding rod is connected to each cylindrical hole in a sliding fit manner. A frustum-shaped block is connected to each spiral groove in a threaded connection manner. The frustum-shaped block is connected to the first socket column in a sliding fit manner. The frustum-shaped block is connected to the corresponding protruding rod in a sliding fit manner. The ends of the protruding rods on the same side are commonly fixedly connected to a contact column. The contact column is slidably connected to the first socket column. The structures of the second socket column and the third socket column are the same as that of the first socket column. A fixed block is fixedly installed at the right end of the rectangular plate. A rectangular groove is formed in the middle of the fixed block. A sliding block is slidably connected to the rectangular groove. Connecting springs are fixedly connected between the left and right ends of the sliding block and the rectangular groove. A second sprocket is rotatably connected to the upper end of the sliding block. All the first sprockets and the second sprockets are commonly driven and connected by a first toothed chain belt. A control handle is fixedly installed at the upper end of the front third socket column.

[0013] According to an embodiment of the present invention, adsorption grooves are evenly formed on the contact column. The adsorption grooves on each contact column are communicated with each other. A micro air pump is fixedly installed at the lower end of the first socket column. A control pipe is fixedly installed at the upper end of the micro air pump. Elastic connecting pipes are fixedly connected to the lowermost adsorption grooves on the contact column. The ends of the connecting pipes are commonly fixedly connected to the control pipe.

[0014] According to an embodiment of the present invention, the welding method of the above metal part automatic welding device includes the following steps:

[0015] S1. Preliminary adjustment: First, support the main pipe with the welding hole opening upward through the positioning frame, adjust the distances between the first socket column, the second socket column, and the third socket column through the distance adjustment frame, and at the same time drive the linkage frame to adjust the distances between the pushing plates.

[0016] S2. Alignment adjustment: Drive the first socket column, the second socket column, and the third socket column to move on the horizontal plane through the electric slider, so that the last third socket column is aligned with the last welding hole of the main pipe. Drive the L-shaped bracket, the first socket column, the second socket column, and the third socket column to move downward synchronously through the distance control cylinder until they are inserted into the holes on the main pipe. At this time, adjust the first socket column, the second socket column, and the third socket column to align the center line of the welding hole on the main pipe with the center line of the first socket column.

[0017] S3. Fixed feeding: At this time, adjust the positioning frame to clamp and fix the main pipe. The distance control cylinder drives the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post to return to the initial position. The rotating frame drives the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post to rotate counterclockwise by °. Workers put multiple branch pipes to be welded on the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post, and adjust the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post to support and fix the inner ring wall of the branch pipes. At this time, the rotating frame drives the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post to rotate clockwise by °.

[0018] S4. Alignment and welding: The distance control cylinder drives the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post to move downward and extend into the welding holes. The driving frame drives the pushing plate to move downward to push the branch pipes until the lowest branch pipe is aligned and closely attached to the welding hole on the main pipe. The electric welding head welds between the welding holes on the branch pipes and the main pipe. After welding, the electric welding head and the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post return to the initial position. The electric slider drives the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post to move horizontally forward to above the next group of welding holes.

[0019] S5. Repeated processing: Repeat the alignment and welding process until all branch pipes are welded to the main pipe. The processed parts are reset, and the workpiece is removed.

[0020] As can be seen from the above technical solutions, the present invention has the following advantages:

[0021] 1. In the present invention, through the cooperation of the positioning frame, the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post, the main pipe is limited and fixed to ensure that its welding hole is vertically upward. The distance adjustment frame makes the first sleeve insertion post, the second sleeve insertion post, and the third sleeve insertion post evenly distribute multiple branch pipes, and groups multiple branch pipes to be vertically and concentrically and closely butted with the welding holes on the main pipe, and then welds. Only one feeding is required to complete the welding of a single dust collector blowpipe during the entire welding process, ensuring the welding quality and improving the welding efficiency at the same time.

[0022] 2. In the present invention, by rotating the bidirectional screw rod three to adjust the distance between the two distance limiting blocks, and with the cooperation of the first connecting block, the second connecting block, the moving block, and the cylindrical spring, the distance between the first sleeve insertion post and the second sleeve insertion post and the distance between the second sleeve insertion post and the third sleeve insertion post are changed, and it is ensured that the distance between the first sleeve insertion post and the second sleeve insertion post is equal to the distance between the second sleeve insertion post and the third sleeve insertion post, so as to ensure that the distance between the branch pipes in the same group is equal and ensure the welding quality.

[0023] 3. In the present invention, the micro air pump sucks out the air between the branch pipes in the adsorption groove, so that the branch pipes are adsorbed and fixed, preventing the branch pipes from falling when the first sleeve insertion post rotates vertically and moves forward.

[0024] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by the technical features of these technical solutions, other technical problems that can be solved by the metal part automatic welding device and method provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings.

[0026] Figure 1 Shows a front perspective structural schematic diagram provided according to an embodiment of the present invention.

[0027] Figure 2 Shows a front perspective structural schematic diagram provided according to an embodiment of the present invention after removing the rectangular plate and the limiting plate.

[0028] Figure 3 Shows a front perspective structural schematic diagram of the distance adjusting frame, the distance controlling frame and the linkage frame.

[0029] Figure 4 Shows a left sectional plane structural schematic diagram of the rotating frame and the distance adjusting frame.

[0030] Figure 5 Shows Figure 4 a partial enlarged view at position N of

[0031] Figure 6 Shows a top sectional plane structural schematic diagram of the fixing spring and the first compensation block.

[0032] Figure 7 Shows a front perspective structural schematic diagram of the dust collector blowpipe.

[0033] Figure 8 Shows a schematic diagram of the working process of the present invention.

[0034] Among them, the above-mentioned drawings include the following reference numerals:

[0035] 1. Fixing unit; 11. Fixing table; 12. Positioning frame; 121. Circular abutting plate; 122. First bidirectional screw; 123. Rectangular extrusion plate; 124. Second bidirectional screw; 13. Rectangular sliding groove; 14. Electric slider; 2. Alignment welding unit; 21. Distance control cylinder; 22. L-shaped bracket; 23. Rotating frame; 231. Second motor; 232. First bevel gear; 233. Rotating circular plate; 234. Sector groove; 235. Bevel gear groove; 24. Rectangular plate; 241. Fixed block; 242. Rectangular groove; 243. Sliding block; 244. Connecting spring; 245. Second sprocket; 25. First socket column; 251. Control rod; 252. Spiral groove; 253. First sprocket; 254. Cylindrical hole; 255. Extended rod; 256. Round table block; 257. Contact column; 2571. Adsorption groove; 2572. Micro air pump; 2573. Control pipe; 2574. Connecting pipe; 258. First tooth chain belt; 259. Control handle; 26. Second socket column; 27. Third socket column; 28. Distance adjustment frame; 281. Moving block; 282. First connecting block; 283. Second connecting block; 284. Cylindrical spring; 285. Distance limiting block; 286. Third bidirectional screw; 29. Electric welding head; 30. Driving frame; 301. Right-angle bracket; 302. Positioning circular plate; 303. First motor; 304. Cylindrical gear; 305. Rotating toothed ring; 31. Distance control frame; 311. Threaded rod; 312. Connecting rod; 313. Rectangular block; 314. Rotating ring; 315. Guide rod; 32. Linkage frame; 321. Limiting plate; 322. First fixing plate; 323. Second fixing plate; 324. Third fixing plate; 325. Compensation plate; 326. First compensation block; 327. Second compensation block; 328. Fixed spring; 329. Bent rod; 33. Pushing plate. Detailed implementation manners

[0036] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0037] Refer to Figure 1 And Figure 2, an automatic welding device for metal parts, including a fixing unit 1 and an alignment welding unit 2. The alignment welding unit 2 is arranged on the fixing unit 1 and is used for aligning and welding between the branch pipe and the main pipe of the dust collector blowpipe; the fixing unit 1 includes a fixing table 11, an arc-shaped groove is opened on the fixing table 11, a positioning frame 12 is arranged on the fixing table 11, a rectangular sliding groove 13 is opened on the left side of the fixing table 11, and an electric slider 14 is connected in the rectangular sliding groove 13 in a sliding fit manner; the alignment welding unit 2 includes a distance control cylinder 21, the electric slider 14 is fixedly installed with the distance control cylinder 21 at the upper end, the telescopic end of the distance control cylinder 21 is fixedly installed with an L-shaped bracket 22, the longitudinal section of the L-shaped bracket 22 from front to back is fixedly connected with the telescopic end of the distance control cylinder 21, a rotating frame 23 is arranged on the front side of the transverse section of the L-shaped bracket 22, a rectangular plate 24 is fixedly installed at the front end of the rotating frame 23, a socket column one 25 is fixedly installed in the middle of the rectangular plate 24, and socket columns two 26 and socket columns three 27 are symmetrically connected to the front and back sides of the socket column one 25 on the rectangular plate 24 in a sliding fit manner from near to far. A distance adjustment frame 28 is jointly arranged on the socket column one 25, the socket column two 26 and the socket column three 27, electric welding heads 29 are fixedly installed at the right ends of the socket column one 25, the socket column two 26 and the socket column three 27, a driving frame 30 is arranged at the upper end of the rectangular plate 24, a distance control frame 31 is arranged on the driving frame 30, a linkage frame 32 is arranged on the right side of the distance control frame 31, and pushing plates 33 are uniformly fixedly installed at the right end of the linkage frame 32.

[0038] First, support the main pipe with the welding holes facing upward through the positioning frame 12 and center it in the front-back direction. At this time, according to the distance between the welding holes on the main pipe, adjust the distance between the first socket column 25, the second socket column 26, and the third socket column 27 through the distance adjusting frame 28. While adjusting the distance between the first socket column 25, the second socket column 26, and the third socket column 27, the distance adjusting frame 28 drives the linkage frame 32 to adjust the distance between the pushing plates 33. Then, drive the first socket column 25, the second socket column 26, and the third socket column 27 to move on the horizontal plane through the electric slider 14 until the last third socket column 27 is aligned with the welding hole on the last side of the main pipe. Drive the L-shaped bracket 22, the first socket column 25, the second socket column 26, and the third socket column 27 to move downward synchronously through the distance control cylinder 21 until the first socket column 25, the second socket column 26, and the third socket column 27 are inserted into the holes on the main pipe. At this time, by adjusting the first socket column 25, the second socket column 26, and the third socket column 27, align the center line of the welding hole on the main pipe with the center line of the first socket column 25. At this time, adjust the positioning frame 12 to clamp and fix the main pipe. At this time, the welding holes of the main pipe are vertically upward. The distance control cylinder 21 drives the first socket column 25, the second socket column 26, and the third socket column 27 to return to the initial position. Drive the first socket column 25, the second socket column 26, and the third socket column 27 to rotate counterclockwise by 180° through the rotating frame 23. Workers put multiple branch pipes to be welded on the first socket column 25, the second socket column 26, and the third socket column 27, and adjust the first socket column 25, the second socket column 26, and the third socket column 27 to support and fix the inner wall of the branch pipes. At this time, drive the first socket column 25, the second socket column 26, and the third socket column 27 to rotate clockwise by 180° through the rotating frame 23, and then perform the alignment and welding process. First, drive the first socket column 25, the second socket column 26, and the third socket column 27 to move downward and extend into the welding holes through the distance control cylinder 21. At this time, drive the distance control frame 31 to move downward through the driving frame 30, thereby driving the pushing plates 33 to move downward to push the branch pipes until the lowermost branch pipe is aligned and closely attached to the welding hole on the main pipe. At this time, weld between the welding holes of the branch pipes and the main pipe through the electric welding head 29. After welding, the electric welding head 29, the first socket column 25, the second socket column 26, and the third socket column 27 return to the initial position. Drive the first socket column 25, the second socket column 26, and the third socket column 27 to move horizontally forward above the next group of welding holes through the electric slider 14, and repeat the alignment and welding process.

[0039] Refer to Figure 2, the positioning frame 12 includes a circular abutting plate 121. The arc-shaped grooves on the fixed platform 11 are symmetrically arranged front and back and are connected to the circular abutting plate 121 in a sliding fit manner. A bidirectional screw rod 122 is rotatably connected to the fixed platform 11. The front and back sides of the bidirectional screw rod 122 are connected to the adjacent circular abutting plates 121 in a threaded connection manner. On the fixed platform 11 and symmetrically arranged on the left and right sides of the arc-shaped groove, there are rectangular pressing plates 123 connected in a sliding fit manner. A bidirectional screw rod 124 is rotatably connected to the middle of the fixed platform 11. The left and right sides of the bidirectional screw rod 124 are connected to the adjacent rectangular pressing plates 123 in a threaded connection manner; by driving the circular abutting plates 121 to move towards each other through the bidirectional screw rod 122, the front and back sides of the main pipe are positioned and pressed, so that the main pipe is centered in the front and back directions. By driving the rectangular pressing plates 123 to move towards each other through the bidirectional screw rod 124, the main pipe with the welding hole opening upwards is supported. When the socket column 25, the socket column 26 and the socket column 27 are sleeved, after the center line of the welding hole on the main pipe is aligned with the center line of the socket column 25, at this time, drive the rectangular pressing plates 123 to move away from each other through the bidirectional screw rod 124, and drive the circular abutting plates 121 to move away from each other through the bidirectional screw rod 122, so that the main pipe moves downwards to ensure that its lower end is in close contact with the fixed platform 11. Then, drive the rectangular pressing plates 123 to move towards each other through the bidirectional screw rod 124 again, and drive the circular abutting plates 121 to move towards each other through the bidirectional screw rod 122 to clamp and fix the main pipe. At this time, the welding hole of the main pipe is vertically upward and is centered and fixed.

[0040] Refer to Figure 4 , the rotating frame 23 includes a motor 231. The front end of the L-shaped bracket 22 is fixedly installed with a motor 231 through a motor seat. The output shaft of the motor 231 is fixedly installed with a bevel gear 232 through a coupling. The front end of the L-shaped bracket 22 is rotatably connected with a rotating circular plate 233. A sector groove 234 with a central angle of 180° is opened at the rear end of the rotating circular plate 233. The sector groove 234 is evenly provided with bevel gear grooves 235 that cooperate with the bevel gear 232. A rectangular plate 24 is fixedly installed at the front end of the rotating circular plate 233; by driving the bevel gear 232 to rotate through the motor 231, with the cooperation of the sector groove 234, the rotating circular plate 233 can be driven to rotate 180°.

[0041] Refer to Figure 2 , Figure 3 and Figure 4, the distance adjusting frame 28 includes a moving block 281. A moving block 281 is fixedly installed on the upper side of the second socket column 26. Connecting blocks one 282 are symmetrically and fixedly installed at the front and rear ends of the first socket column 25. Connecting blocks two 283 are fixedly installed at one ends of the third socket columns 27 facing the first socket column 25. The connecting block one 282 and the connecting block two 283 on the same side are connected to the moving block 281 in a sliding fit manner. The moving block 281 is fixedly connected to the connecting block one 282 and the connecting block two 283 through cylindrical springs 284 respectively. Limit blocks 285 are fixedly installed at the right ends of the third socket columns 27. A bidirectional screw three 286 is rotatably connected to the rectangular plate 24. The front and rear sides of the bidirectional screw three 286 are connected to the adjacent limit blocks 285 in a threaded connection manner respectively; by rotating the bidirectional screw three 286 to adjust the distance between the two limit blocks 285, with the cooperation of the connecting block one 282, the connecting block two 283, the moving block 281 and the cylindrical spring 284, the distance between the first socket column 25 and the second socket column 26 and the distance between the second socket column 26 and the third socket column 27 are changed, and it is ensured that the distance between the first socket column 25 and the second socket column 26 is equal to the distance between the second socket column 26 and the third socket column 27.

[0042] Refer to Figure 1 , Figure 2 and Figure 3 , the driving frame 30 includes a right-angle bracket 301. A right-angle bracket 301 is fixedly installed at the upper end of the rectangular plate 24. A positioning circular plate 302 is fixedly installed at the lower end of the horizontal section of the right-angle bracket 301. A first motor 303 is fixedly installed at the upper end of the horizontal section of the right-angle bracket 301 through a motor base. A cylindrical gear 304 is fixedly installed on the output shaft of the first motor 303 through a coupling. A rotating toothed ring 305 is rotatably connected to the lower end of the positioning circular plate 302. The inner wall of the rotating toothed ring 305 meshes with the cylindrical gear 304; by driving the cylindrical gear 304 to rotate through the first motor 303, the rotating toothed ring 305 is driven to rotate.

[0043] Refer to Figure 3 , the distance control frame 31 includes a threaded rod 311. A threaded rod 311 that rotates through the positioning circular plate 302 is rotatably connected to the lower end of the horizontal section of the right-angle bracket 301. Connecting rods 312 are circumferentially and uniformly fixedly installed at the outer end of the upper side of the threaded rod 311. The ends of the connecting rods 312 are fixedly connected to the rotating toothed ring 305. A rectangular block 313 is connected to the threaded rod 311 in a threaded connection manner. A rotating ring 314 is rotatably connected to the threaded rod 311 and located below the connecting rods 312. A guide rod 315 that slides through the rectangular block 313 is fixedly installed at the lower left end of the rotating ring 314; by driving the threaded rod 311 to rotate through the rotating toothed ring 305, the rotation of the threaded rod 311 drives the rectangular block 313 to move in the vertical plane, and the rectangular block 313 is limited and guided by the guide rod 315.

[0044] Refer toFigure 1 , Figure 3 and Figure 6 , the linkage 32 includes a limit plate 321. A limit plate 321 is fixedly installed at the right end of the rectangular block 313. A first fixing plate 322 is fixedly installed in the middle of the limit plate 321. A second fixing plate 323 and a third fixing plate 324 are symmetrically connected to the limit plate 321 on both sides of the first fixing plate 322 in a sliding fit manner from near to far. A compensation plate 325 is fixedly installed at the left end of the second fixing plate 323. First compensation blocks 326 are symmetrically fixedly installed at both ends of the first fixing plate 322. Second compensation blocks 327 are fixedly installed at the opposite ends of the two third fixing plates 324. The adjacent first compensation blocks 326 and second compensation blocks 327 are slidably connected to the corresponding compensation plates 325. Fixed springs 328 are fixedly connected between the first compensation blocks 326 and the compensation plates 325 and between the second compensation blocks 327 and the compensation plates 325. A bent rod 329 is fixedly installed at the left end of the second connecting block 283. The vertical section of the bent rod 329 slidably penetrates through the second compensation block 327. Pushing plates 33 are fixedly installed at the right ends of the lower sides of the first fixing plate 322, the second fixing plate 323, and the third fixing plate 324. When the distance between the two distance limiting blocks 285 changes, driven by the bent rod 329, the distance between the front and rear second compensation blocks 327 changes accordingly. With the cooperation of the first compensation blocks 326, the second compensation blocks 327, the compensation plates 325, and the fixed springs 328, the distances between the first fixing plate 322 and the second fixing plate 323 and between the second fixing plate 323 and the third fixing plate 324 are the same, and the distance between the first fixing plate 322 and the second fixing plate 323 is the same as the distance between the first socket post 25 and the second socket post 26.

[0045] Refer to Figure 3 and Figure 5, a control rod 251 is rotatably connected to the middle of the first socket column 25. Multiple spiral grooves 252 are evenly formed on the control rod 251. A first sprocket 253 is rotatably connected to the upper end of the control rod 251. The outer end of the first socket column 25 is linearly and evenly provided with a set of protruding hole groups. Each set of protruding hole groups is composed of cylindrical holes 254 evenly formed along the circumference of the first socket column 25. A protruding rod 255 is connected to each cylindrical hole 254 in a sliding fit manner. A frustum block 256 is connected to each spiral groove 252 in a threaded connection manner. The frustum block 256 is connected to the first socket column 25 in a sliding fit manner. The frustum block 256 is connected to the corresponding protruding rod 255 in a sliding fit manner. The ends of the protruding rods 255 on the same side are fixedly connected together to form a contact column 257. The contact column 257 is slidably connected to the first socket column 25. The structures of the second socket column 26 and the third socket column 27 are the same as that of the first socket column 25. A fixing block 241 is fixedly installed at the right end of the rectangular plate 24. A rectangular groove 242 is formed in the middle of the fixing block 241. A sliding block 243 is slidably connected to the rectangular groove 242. Connecting springs 244 are fixedly connected between the left and right ends of the sliding block 243 and the rectangular groove 242 respectively. A second sprocket 245 is rotatably connected to the upper end of the sliding block 243. All the first sprockets 253 and the second sprockets 245 are jointly driven by a first toothed chain belt 258. A control handle 259 is fixedly installed at the upper end of the front third socket column 27. By rotating the control handle 259, the first sprocket 253 thereon is driven to rotate. Then, through the cooperation of the first toothed chain belt 258, other first sprockets 253 and the second sprockets 245, all the first sprockets 253 rotate synchronously, driving the corresponding control rods 251 to rotate, thereby driving the frustum blocks 256 to move on the control rods 251. The movement of the frustum blocks 256 changes the length of the protruding columns protruding from the first socket column 25, thereby changing the distance that the contact column 257 protrudes from the first socket column 25, so that the first socket column 25 can support and fix branch pipes with different diameters. When the distance between the first socket columns 25 changes, the connecting springs 244 on the left and right sides are stressed differently, thereby driving the sliding block 243 and the second sprocket 245 to move, compensating for the changed distance between the first socket columns 25, and ensuring that the first toothed chain belt 258 is always in a tensioned state.

[0046] Refer to Figure 5 , adsorption grooves 2571 are evenly formed on the contact column 257. The adsorption grooves 2571 on each contact column 257 are communicated with each other. A micro air pump 2572 is fixedly installed at the lower end of the first socket column 25. A control pipe 2573 is fixedly installed at the upper end of the micro air pump 2572. Elastic connecting pipes 2574 are fixedly connected to the lowermost adsorption grooves 2571 on the contact column 257. The ends of the connecting pipes 2574 are jointly fixedly connected to the control pipe 2573. By using the micro air pump 2572 to suck out the air between the branch pipes from the adsorption grooves 2571, the branch pipes are adsorbed and fixed, preventing the branch pipes from falling off when the first socket column 25 is vertically flipped and moved forward.

[0047] Refer to Figure 8 , the welding method of the above metal part automatic welding device includes the following steps:

[0048] S1. Preliminary adjustment: First, support the main pipe with the welding hole opening upward through the positioning frame 12, adjust the distance between the first socket column 25, the second socket column 26 and the third socket column 27 through the distance adjusting frame 28, and at the same time drive the linkage frame 32 to adjust the distance between the pushing plates 33.

[0049] S2. Alignment adjustment: Drive the first socket column 25, the second socket column 26 and the third socket column 27 to move on the horizontal plane through the electric slider 14, so that the last socket column 27 is aligned with the welding hole on the last side of the main pipe. Drive the L-shaped bracket 22, the first socket column 25, the second socket column 26 and the third socket column 27 to move downward synchronously through the distance control cylinder 21 until they are inserted into the holes on the main pipe. At this time, by adjusting the first socket column 25, the second socket column 26 and the third socket column 27, align the center line of the welding hole on the main pipe with the center line of the first socket column 25.

[0050] S3. Fixing and feeding: At this time, adjust the positioning frame 12 to clamp and fix the main pipe. The distance control cylinder 21 drives the first socket column 25, the second socket column 26 and the third socket column 27 to return to the initial position. Drive the first socket column 25, the second socket column 26 and the third socket column 27 to rotate counterclockwise by 180° through the rotating frame 23. Workers put multiple branch pipes to be welded on the first socket column 25, the second socket column 26 and the third socket column 27, and adjust the first socket column 25, the second socket column 26 and the third socket column 27 to support and fix the inner wall of the branch pipe. At this time, drive the first socket column 25, the second socket column 26 and the third socket column 27 to rotate clockwise by 180° through the rotating frame 23.

[0051] S4. Alignment and welding: Drive the first socket column 25, the second socket column 26 and the third socket column 27 to move downward and extend into the welding hole through the distance control cylinder 21. Drive the pushing plates 33 to move downward through the driving frame 30, push the branch pipe until the lowest branch pipe is aligned and close to the welding hole on the main pipe. Weld between the branch pipe and the welding hole on the main pipe through the electric welding head 29. After welding, the electric welding head 29, the first socket column 25, the second socket column 26 and the third socket column 27 return to the initial position. Drive the first socket column 25, the second socket column 26 and the third socket column 27 to move horizontally forward to the upper part of the next group of welding holes through the electric slider 14.

[0052] S5. Repeated processing: Repeat the alignment and welding process until all branch pipes are welded to the main pipe. Reset the processed parts and remove the workpiece.

[0053] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "middle part", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "end", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0054] In addition, terms such as "first", "second", "No. 1", "No. 2", "one", "two" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A metal parts automatic welding device, characterized in that , comprising a fixing unit (1) and a positioning welding unit (2), wherein the positioning welding unit (2) is arranged on the fixing unit (1) and is used for positioning welding between a branch pipe and a main pipe of a dust collector blowing pipe; The fixing unit (1) comprises a fixing platform (11), an arc-shaped groove is formed on the fixing platform (11), a positioning frame (12) is arranged on the fixing platform (11), a rectangular sliding groove (13) is formed on the left side of the fixing platform (11), and an electric sliding block (14) is connected to the rectangular sliding groove (13) in a sliding manner; The positioning welding unit (2) comprises a distance control cylinder (21), the distance control cylinder (21) is fixedly mounted on the upper end of the electric slider (14), an L-shaped bracket (22) is fixedly mounted on the telescopic end of the distance control cylinder (21), a longitudinal section of the L-shaped bracket (22) from front to back is fixedly connected to the telescopic end of the distance control cylinder (21), a rotating frame (23) is arranged on the front side of the transverse section of the L-shaped bracket (22), a rectangular plate (24) is fixedly mounted on the front end of the rotating frame (23), a sleeve plug column (25) is fixedly mounted in the middle of the rectangular plate (24), and a plurality of sleeve plug columns (25) are arranged on the rectangular plate (24) and located on both sides of the sleeve plug column (25) by a plurality of protruding holes. A second sleeve column (26) and a third sleeve column (27) are symmetrically connected in a sliding manner, and a distance adjustment frame (28) is commonly provided on the first sleeve column (25), the second sleeve column (26) and the third sleeve column (27). An electric welding head (29) is fixedly installed on the right ends of the first sleeve column (25), the second sleeve column (26) and the third sleeve column (27). A driving frame (30) is provided on the upper end of the rectangular plate (24), and a distance control frame (31) is provided on the driving frame (30). A linkage frame (32) is provided on the right side of the distance control frame (31), and a push plate (33) is evenly fixedly installed on the right end of the linkage frame (32); The linkage frame (32) comprises a limit plate (321), the limit plate (321) is fixedly installed on the right end of the rectangular block (313), a fixed plate 1 (322) is fixedly installed in the middle of the limit plate (321), a fixed plate 2 (323) and a fixed plate 3 (324) are symmetrically connected in a sliding manner from near to far on the limit plate (321) and located on the front and rear sides of the fixed plate 1 (322), and a push plate (33) is fixedly installed on the right ends of the lower sides of the fixed plate 1 (322), the fixed plate 2 (323) and the fixed plate 3 (324); the push plate (33) is driven by the driving frame (30) to move downward, and the branch pipe is pushed until the branch pipe at the lowermost side is aligned and tightly attached to the welding hole on the main pipe.

2. The automatic metal welding device according to claim 1, characterized in that: The positioning frame (12) comprises a circular abutment plate (121), the arc-shaped groove on the fixed platform (11) is symmetrically connected to the circular abutment plate (121) in a sliding manner, the fixed platform (11) is rotatably connected to a bidirectional screw rod (122), the front and rear sides of the bidirectional screw rod (122) are connected to the adjacent circular abutment plate (121) in a threaded manner, the fixed platform (11) is symmetrically connected to the left and right sides of the arc-shaped groove in a sliding manner, the middle part of the fixed platform (11) is rotatably connected to a bidirectional screw rod (124), the left and right sides of the bidirectional screw rod (124) are connected to the adjacent rectangular extrusion plate (123) in a threaded manner.

3. The automatic metal welding device according to claim 1, characterized in that: The rotating frame (23) comprises a second motor (231), the second motor (231) is fixedly mounted on the front end of the L-shaped bracket (22) via a motor seat, the output shaft of the second motor (231) is fixedly mounted with a first bevel gear (232) via a coupling, the front end of the L-shaped bracket (22) is rotatably connected to a rotating circular plate (233), the rear end of the rotating circular plate (233) is provided with a fan-shaped groove (234) with a central angle of 180°, the fan-shaped groove (234) is evenly provided with bevel tooth grooves (235) matching with the first bevel gear (232), and the front end of the rotating circular plate (233) is fixedly mounted with a rectangular plate (24).

4. The automatic metal welding device according to claim 1, characterized in that: The distance adjustment frame (28) comprises a moving block (281), the moving block (281) is fixedly mounted on the upper side of the second sleeve column (26), the connecting block (282) is symmetrically fixedly mounted on the front and rear ends of the first sleeve column (25), the connecting block (283) is fixedly mounted on the end of the third sleeve column (27) facing the first sleeve column (25), the connecting block (282) and the connecting block (283) on the same side are connected to the moving block (281) in a sliding manner, the moving block (281) and the connecting block (282) as well as the moving block (281) and the connecting block (283) are fixedly connected via a cylindrical spring (284), the right end of the third sleeve column (27) is fixedly mounted with a distance limiting block (285), the rectangular plate (24) is rotatably connected with a bidirectional screw rod (286), and the front and rear sides of the bidirectional screw rod (286) are respectively connected to the adjacent distance limiting blocks (285) in a threaded manner.

5. The automatic metal welding device according to claim 1, characterized in that: The driving frame (30) comprises a right-angle bracket (301), the right-angle bracket (301) is fixedly mounted on the upper end of the rectangular plate (24), a positioning circular plate (302) is fixedly mounted on the lower end of the horizontal section of the right-angle bracket (301), a motor 1 (303) is fixedly mounted on the upper end of the horizontal section of the right-angle bracket (301) via a motor seat, a cylindrical gear (304) is fixedly mounted on the output shaft of the motor 1 (303) via a coupling, a rotating gear ring (305) is rotatably connected to the lower end of the positioning circular plate (302), and the inner ring wall of the rotating gear ring (305) is meshed with the cylindrical gear (304).

6. The automatic metal welding device according to claim 5, characterized in that: The distance control frame (31) comprises a threaded rod (311), the lower end of the horizontal section of the right-angle bracket (301) is rotatably connected to the threaded rod (311) which rotates and penetrates the positioning circular plate (302), the upper outer end of the threaded rod (311) is evenly fixedly installed with a connecting rod (312) in the circumferential direction, the end of the connecting rod (312) is fixedly connected to the rotating gear ring (305), the threaded rod (311) is connected to a rectangular block (313) in a threaded manner, the threaded rod (311) is rotatably connected to a rotating ring (314) located on the threaded rod (311) and located on the lower side of the connecting rod (312), and a guide rod (315) which slides and penetrates the rectangular block (313) is fixedly installed on the left side of the lower end of the rotating ring (314).

7. The automatic metal welding device according to claim 6, characterized in that: A compensation plate (325) is fixedly installed on the left end of the second fixing plate (323), compensation blocks (326) are symmetrically fixedly installed on the front and rear ends of the first fixing plate (322), and compensation blocks (327) are fixedly installed on the opposite ends of the two third fixing plates (324). The adjacent compensation blocks (326) and compensation blocks (327) are slidably connected to the corresponding compensation plates (325), and fixed springs (328) are fixedly connected between the compensation blocks (326) and the compensation plates (325) and between the compensation blocks (327) and the compensation plates (325). A bending rod (329) is fixedly installed on the left end of the second connecting block (283), and the vertical section of the bending rod (329) slides through the second compensation block (327).

8. The automatic metal welding device according to claim 1, characterized in that: The middle part of the sleeve column (25) is rotatably connected to a control rod (251), and a plurality of spiral grooves (252) are evenly arranged on the control rod (251). The upper end of the control rod (251) is rotatably connected to a sprocket wheel (253). The outer end of the sleeve column (25) is evenly provided with a group of extension holes along its linearity. Each group of extension holes is composed of cylindrical holes (254) evenly arranged along the circumference of the sleeve column (25). The cylindrical holes (254) are all connected to extension rods (255) in a sliding manner. The spiral grooves (252) are all connected to truncated cone blocks (256) in a threaded manner. The truncated cone blocks (256) are connected to the sleeve column (25) in a sliding manner. The truncated cone blocks (256) are connected to the corresponding extension rods (255) in a sliding manner. The ends of the extension rods (255) on the same side are connected to the sleeve column (255) in a sliding manner. A contact column (257) is fixedly connected together, and the contact column (257) is slidably connected to the sleeve column one (25). The structures of the sleeve column two (26) and the sleeve column three (27) are the same as the structure of the sleeve column one (25). A fixed block (241) is fixedly installed at the right end of the rectangular plate (24). A rectangular groove (242) is opened in the middle of the fixed block (241). A sliding block (243) is slidably connected in the rectangular groove (242). The left and right ends of the sliding block (243) are fixedly connected to the rectangular groove (242) with a connecting spring (244). The upper end of the sliding block (243) is rotatably connected to the sprocket two (245). All the sprockets one (253) and the sprocket two (245) are commonly connected through a toothed chain belt one (258) for transmission. A control handle (259) is fixedly installed at the upper end of the sleeve column three (27) on the front side.

9. The automatic metal welding device according to claim 8, characterized in that: The contact column (257) is evenly provided with adsorption grooves (2571), and the adsorption grooves (2571) on each contact column (257) are interconnected. A micro air pump (2572) is fixedly installed at the lower end of the sleeve column (25), and a control tube (2573) is fixedly installed at the upper end of the micro air pump (2572). The adsorption grooves (2571) at the lower side of the contact column (257) are fixedly connected to elastic connecting tubes (2574), and the ends of the connecting tubes (2574) are fixedly connected to the control tube (2573).

10. The automatic metal welding device according to claim 1, characterized in that: The welding method of the above-mentioned metal parts automatic welding device comprises the following steps: S1. Preliminary adjustment: First, the main pipe with the welding hole opening facing upward is supported by the positioning frame (12), and the distance between the first sleeve column (25), the second sleeve column (26) and the third sleeve column (27) is adjusted by the distance adjustment frame (28), and at the same time, the linkage frame (32) is driven to adjust the distance between the pusher plates (33); S2, alignment adjustment: the electric slider (14) drives the first sleeve column (25), the second sleeve column (26) and the third sleeve column (27) to move on the horizontal plane, so that the third sleeve column (27) on the rear side is aligned with the welding hole on the rear side of the main pipe, and the distance control cylinder (21) drives the L-shaped bracket (22), the first sleeve column (25), the second sleeve column (26) and the third sleeve column (27) to move downward synchronously until they are inserted into the hole on the main pipe. At this time, the first sleeve column (25), the second sleeve column (26) and the third sleeve column (27) are adjusted so that the center line of the welding hole on the main pipe is aligned with the center line of the first sleeve column (25); S3, fixed loading: at this time, the positioning frame (12) is adjusted to clamp and fix the main pipe, and the distance control cylinder (21) drives the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) to return to the initial position, and the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) are driven by the rotating frame (23) to turn 180 degrees counterclockwise, and the worker puts a plurality of branch pipes to be welded on the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27), and adjusts the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) to support and fix the inner ring wall of the branch pipe, and at this time, the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) are driven by the rotating frame (23) to turn 180 degrees clockwise; S4, alignment welding: the distance control cylinder (21) drives the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) to move downward and extend into the welding hole, and the driving frame (30) drives the push plate (33) to move downward, and pushes the branch pipe until the lowermost branch pipe is aligned and tightly attached to the welding hole on the main pipe, and the electric welding head (29) is used to weld the welding holes on the branch pipe and the main pipe. After welding, the electric welding head (29) and the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) return to the initial position, and the electric slider (14) drives the sleeve column 1 (25), the sleeve column 2 (26) and the sleeve column 3 (27) to move horizontally forward to the top of the next group of welding holes; S5. Repeat processing: Repeat the positioning welding process until all branch pipes are welded to the main pipe, the processed parts are reset, and the workpiece is removed.

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