Automatic welding device and method for metal parts

Abstract

The invention relates to the technical field of metal part welding, in particular to an automatic metal part welding device and method.The automatic metal part welding device comprises a fixing unit and an aligning unit, a positioning frame is matched with a first sleeving and inserting column, a second sleeving and inserting column and a third sleeving and inserting column, a main pipe is limited and fixed, and it is ensured that a welding hole of the main pipe is vertically upward; the first sleeving and inserting column, the second sleeving and inserting column and the third sleeving and inserting column are distributed on the branch pipes at equal intervals through the distance adjusting frame, the branch pipes are grouped to be in tight butt joint with the welding holes in the main pipe in a vertical mode with the center lines coincident, then welding is conducted, and in the whole welding process, welding of the single dust remover injection pipe can be completed only through one-time feeding; the welding quality is ensured and the welding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal parts welding, and in particular to an automatic metal parts welding device and method. Background Art

[0002] The blow pipe of the dust collector plays a vital role in the dust removal process. It mainly plays the role of cleaning dust, improving filtration efficiency and protecting filtration materials. Therefore, its quality determines the dust removal effect. Here we mainly focus on welding processing of a dust collector blow pipe. The dust collector blow pipe is mainly made by welding the branch pipe and the main pipe. Therefore, the welding effect between the branch pipe and the main pipe determines the quality of the dust collector blow pipe.

[0003] The traditional welding process is to fix the welding hole of the main pipe vertically upward, and then align the welding holes of the branch pipe with those of the main pipe, and then weld them one by one. The welding efficiency is low, and because the welding point is located between the outer ring wall of the branch pipe and the outer side of the welding hole of the main pipe, errors may occur, resulting in misalignment between the center line of the branch pipe and the center line of the welding hole of the main pipe, which is difficult to detect with the naked eye, resulting in reduced welding quality. In addition, the distances between the welding holes of the main pipe are not exactly the same, which increases the probability of misalignment between the center line of the branch pipe and the center line of the welding hole of the main pipe, further resulting in reduced welding quality. Summary of the invention

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

[0005] An automatic metal welding device according to an embodiment of the present application comprises a fixing unit and a counter-welding unit, wherein the counter-welding unit is arranged on the fixing unit for counter-welding between the branch pipe and the main pipe of the dust collector blowing pipe; the fixing unit comprises a fixing table, an arc-shaped groove is provided on the fixing table, a positioning frame is arranged on the fixing table, a rectangular sliding groove is provided on the left side of the fixing table, and an electric slider is connected to the rectangular sliding groove in a sliding manner; the counter-welding unit comprises a distance-controlling cylinder, a distance-controlling cylinder is fixedly installed on the upper end of the electric slider, an L-shaped bracket is fixedly installed on the telescopic end of the distance-controlling cylinder, and the longitudinal section of the L-shaped bracket from front to back It 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 on the front end of the rotating frame, a sleeve column one is fixedly installed in the middle of the rectangular plate, sleeve column two and sleeve column three are symmetrically connected in a sliding manner from near to far on the rectangular plate and located on the front and rear sides of the sleeve column one, a distance adjusting frame is arranged on the sleeve column one, the sleeve column two and the sleeve column three, electric welding heads are fixedly installed on the right ends of the sleeve column one, the sleeve column two and the sleeve column three, a driving frame is arranged on 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, and a pushing plate is evenly fixedly installed on the right end of the linkage frame.

[0006] According to an embodiment of the present invention, the positioning frame includes a circular abutment plate, an arc-shaped groove on the fixed table is symmetrically connected to the circular abutment plate in a sliding manner, a bidirectional screw rod 1 is rotatably connected to the fixed table, and the front and rear sides of the bidirectional screw rod 1 are connected to the adjacent circular abutment plate in a threaded manner, a rectangular extrusion plate is symmetrically connected to the left and right sides of the arc-shaped groove on the fixed table in a sliding manner, a bidirectional screw rod 2 is rotatably connected to the middle part of the fixed table, and the left and right sides of the bidirectional screw rod 2 are connected to the adjacent rectangular extrusion plates in a threaded manner.

[0007] According to an embodiment of the present invention, the rotating frame includes motor 2, the front end of the L-shaped bracket is fixedly installed with motor 2 through a motor seat, the output shaft of motor 2 is fixedly installed with bevel gear 1 through a coupling, the front end of the L-shaped bracket is rotatably connected with a rotating circular plate, the rear end of the rotating circular plate is provided with a fan-shaped groove with a central angle of 180°, the fan-shaped groove is evenly provided with bevel tooth grooves matching with bevel gear 1, and the front end of the rotating circular plate is fixedly installed with a rectangular 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, a connecting block one is symmetrically fixedly installed on the front and rear ends of the first sleeve column, and a connecting block two is fixedly installed on one end of the third sleeve column facing the first sleeve column, the connecting block one and the connecting block two on the same side are connected to the moving block in a sliding manner, the moving block and the connecting block one as well as the moving block and the connecting block two are fixedly connected by a cylindrical spring, a limited distance block is fixedly installed on the right end of the third sleeve column, a bidirectional screw three is rotatably connected to the rectangular plate, and the front and rear sides of the bidirectional screw three are respectively connected to the adjacent distance limiting blocks in a threaded 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 on the upper end of the rectangular block, a positioning circular plate is fixedly installed on the lower end of the horizontal section of the right-angle bracket, a motor 1 is fixedly installed on the upper end of the horizontal section of the right-angle bracket through a motor seat, a cylindrical gear is fixedly installed on the output shaft of motor 1 through a coupling, and a rotating gear ring is rotatably connected to the lower end of the positioning circular plate, and the inner ring wall of the rotating gear ring is meshed with the cylindrical gear.

[0010] According to an embodiment of the present invention, the distance control frame includes a threaded rod, the lower end of the horizontal section of the right-angle bracket is rotatably connected to a threaded rod that rotates and penetrates a positioning circular plate, a connecting rod is evenly and circumferentially fixedly installed on the upper outer end of the threaded rod, the end of the connecting rod is fixedly connected to a rotating gear ring, a rectangular block is connected to the threaded rod in a threaded manner, a rotating ring is rotatably connected to the threaded rod and located on the lower side of the connecting rod, and a guide rod that slides through the rectangular block is fixedly installed on the left side of the lower end of the rotating ring.

[0011] According to an embodiment of the present invention, the linkage frame includes a limit plate, a limit plate is fixedly installed on the right end of the rectangular block, a fixed plate 1 is fixedly installed in the middle of the limit plate, a fixed plate 2 and a fixed plate 3 are symmetrically connected in a sliding manner from near to far on the limit plate and located on the front and rear sides of the fixed plate 1, a compensation plate is fixedly installed on the left end of the fixed plate 2, a compensation block 1 is symmetrically fixedly installed on both the front and rear ends of the fixed plate 1, and compensation blocks 2 are fixedly installed on the opposite ends of the two fixed plates 3, and the adjacent compensation blocks 1 and 2 are slidably connected with the corresponding compensation plates, and the compensation blocks 1 and 2 are connected with each other, and the compensation blocks 1 and 2 are connected with each other in a sliding manner. A fixing spring is fixedly connected between them, a bending rod is fixedly installed on the left end of the connecting block two, the vertical section of the bending rod slides through the compensation block two, and a pushing plate is fixedly installed on the lower right ends of the fixing plate one, the fixing plate two and the fixing plate three; when the distance between the two limiting blocks changes, driven by the bending rod, the distance between the compensation block two on the front and rear sides changes accordingly, and under the cooperation of the compensation block one and the compensation block two and the compensation plate and the fixing spring, the distance between the fixing plate one and the fixing plate two and between the fixing plate two and the fixing plate three are the same, and the distance between the fixing plate one and the fixing plate two is the same as the distance between the sleeve column one and the sleeve column two.

[0012] According to an embodiment of the present invention, a control rod is rotatably connected to the middle part of the sleeve column 1, and a plurality of spiral grooves are evenly arranged on the control rod. A sprocket wheel 1 is rotatably connected to the upper end of the control rod. A group of extension holes is evenly arranged along the linearity of the outer end of the sleeve column 1, and each group of extension holes is composed of cylindrical holes evenly arranged along the circumference of the sleeve column 1. Extension rods are connected to the cylindrical holes in a sliding manner, and truncated cone blocks are connected to the spiral grooves in a threaded manner. The truncated cone blocks are connected to the sleeve column 1 in a sliding manner, and the truncated cone blocks are connected to the corresponding extension rods in a sliding manner. The two sprockets are connected in the same manner, the ends of the extending rods on the same side are commonly fixedly connected with a contact column, the contact column is slidably connected to the sleeve column one, the structures of the sleeve column two and the sleeve column three are the same as the structure of the sleeve column one, a fixed block is fixedly installed on the right end of the rectangular plate, a rectangular groove is opened in the middle of the fixed block, a sliding block is slidably connected in the rectangular groove, the left and right ends of the sliding block are fixedly connected to the rectangular groove with a connecting spring, the upper end of the sliding block is rotatably connected with a sprocket two, all the sprockets one and two are commonly connected through a toothed chain belt one for transmission, and a control handle is fixedly installed on the upper end of the sleeve column three on the front side.

[0013] According to an embodiment of the present invention, adsorption grooves are evenly arranged on the contact column, and the adsorption grooves on each contact column are connected to each other. A micro air pump is fixedly installed on the lower end of the sleeve column, and a control tube is fixedly installed on the upper end of the micro air pump. The lowermost adsorption grooves on the contact column are fixedly connected with elastic connecting tubes, and the ends of the connecting tubes are fixedly connected to the control tube.

[0014] According to an embodiment of the present invention, the welding method of the above-mentioned metal parts automatic welding device comprises the following steps:

[0015] S1. Preliminary adjustment: First, support the main pipe with the welding hole opening upward through the positioning frame, adjust the distance between the sleeve column 1, the sleeve column 2 and the sleeve column 3 through the distance adjustment frame, and at the same time drive the linkage frame to adjust the distance between the push plates.

[0016] S2. Alignment adjustment: The electric slider drives the sleeve column 1, sleeve column 2 and sleeve column 3 to move on the horizontal plane, so that the sleeve column 3 on the rear side is aligned with the welding hole on the rear side of the main pipe, and the distance control cylinder drives the L-shaped bracket, sleeve column 1, sleeve column 2 and sleeve column 3 to move downward synchronously until they are inserted into the hole on the main pipe. At this time, by adjusting the sleeve column 1, sleeve column 2 and sleeve column 3, the center line of the welding hole on the main pipe is aligned with the center line of the sleeve column 1.

[0017] S3. Fixed loading: At this time, adjust the positioning frame to clamp and fix the main pipe, and the distance control cylinder drives the sleeve column 1, sleeve column 2 and sleeve column 3 to return to the initial position. The rotating frame drives the sleeve column 1, sleeve column 2 and sleeve column 3 to flip counterclockwise. Workers put multiple branch pipes to be welded on the sleeve column 1, sleeve column 2 and sleeve column 3, adjust the sleeve column 1, sleeve column 2 and sleeve column 3 to support and fix the inner ring wall of the branch pipe, and at this time, the rotating frame drives the sleeve column 1, sleeve column 2 and sleeve column 3 to flip clockwise.

[0018] S4. Position welding: The distance-controlled cylinder drives the sleeve column 1, sleeve column 2 and sleeve column 3 to move downward and extend into the welding hole, and the driving frame drives the push plate to move downward, and pushes the branch pipe to the lowest side of the branch pipe to align and fit tightly with the welding holes on the main pipe, and the electric welding head is used to weld the welding holes on the branch pipe and the main pipe. After welding, the electric welding head and the sleeve column 1, sleeve column 2 and sleeve column 3 return to the initial position, and the electric slider drives the sleeve column 1, sleeve column 2 and sleeve column 3 to move horizontally forward to the top of the next group of welding holes.

[0019] 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.

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

[0021] 1. In the present invention, the main pipe is limited and fixed by cooperating with the first sleeve column, the second sleeve column and the third sleeve column to ensure that its welding hole is vertically upward. The first sleeve column, the second sleeve column and the third sleeve column are used to distribute multiple branch pipes equidistantly through the distance adjustment frame, and the multiple branch pipes are grouped and tightly connected with the welding holes on the main pipe vertically and with the center lines overlapping, and then welding is performed. During the entire welding process, the welding of a single dust collector blowing pipe can be completed by loading the material only once, thereby ensuring the welding quality and improving the welding efficiency.

[0022] 2. In the present invention, the distance between the two limit blocks is adjusted by rotating the bidirectional screw rod three, and with the cooperation of the connecting block one and the connecting block two and the moving block and the cylindrical spring, the distance between the sleeve column one and the sleeve column two and the sleeve column two and the sleeve column three are changed, and it is ensured that the distance between the sleeve column one and the sleeve column two is equal to the distance between the sleeve column two and the sleeve column three, thereby ensuring that the distances between the branch pipes in the same group are equal, thereby ensuring the welding quality.

[0023] 3. In the present invention, the air between the branch pipes is sucked out of the adsorption groove by a micro air pump, so that the branch pipes are adsorbed and fixed, thereby preventing the branch pipes from falling when the sleeve column is vertically flipped and moved forward.

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

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of a main-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic diagram of a front three-dimensional structure without a rectangular plate and a limiting plate is shown according to an embodiment of the present invention.

[0028] Figure 3 A schematic diagram of the main stereoscopic structure of the distance adjustment frame, the distance control frame and the linkage frame is shown.

[0029] Figure 4 A schematic diagram of the left-side sectional plan structure of the rotating frame and the pitch-adjusting frame is shown.

[0030] Figure 5 Shows Figure 4 A local enlarged view of location N.

[0031] Figure 6 A schematic diagram of the top cross-sectional plan structure of the fixed spring and the compensation block 1 is shown.

[0032] Figure 7 A schematic diagram of the main stereoscopic structure of the dust collector blowing pipe is shown.

[0033] Figure 8 A schematic diagram of the working process of the present invention is shown.

[0034] The above drawings include the following reference numerals:

[0035] 1. Fixing unit; 11. Fixing table; 12. Positioning frame; 121. Circular abutment plate; 122. Two-way screw rod 1; 123. Rectangular extrusion plate; 124. Two-way screw rod 2; 13. Rectangular sliding groove; 14. Electric slider; 2. Alignment welding unit; 21. Distance control cylinder; 22. L-shaped bracket; 23. Rotating frame; 231. Motor 2; 232. Bevel gear 1; 233. Rotating circular plate; 234. Fan-shaped groove; 235. Bevel tooth groove ; 24, rectangular plate; 241, fixed block; 242, rectangular groove; 243, sliding block; 244, connecting spring; 245, sprocket two; 25, sleeve column one; 251, control rod; 252, spiral groove; 253, sprocket one; 254, cylindrical hole; 255, extension rod; 256, truncated table block; 257, contact column; 2571, adsorption groove; 2572, micro air pump; 2573, control tube; 2574, connecting tube; 2 58, toothed chain belt 1; 259, control handle; 26, sleeve column 2; 27, sleeve column 3; 28, distance adjustment frame; 281, moving block; 282, connecting block 1; 283, connecting block 2; 283, connecting block 2; 284, cylindrical spring; 285, distance limit block; 286, two-way screw 3; 29, electric welding head; 30, drive frame; 301, right angle bracket; 302, positioning circular plate; 303, motor 1; 304, cylindrical gear Wheel; 305, rotating gear ring; 31, distance control frame; 311, threaded rod; 312, connecting rod; 313, rectangular block; 314, rotating ring; 315, guide rod; 32, linkage frame; 321, limit plate; 322, fixed plate one; 323, fixed plate two; 324, fixed plate three; 325, compensation plate; 326, compensation block one; 327, compensation block two; 328, fixed spring; 329, bending rod; 33, push plate. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] See also Figure 1 and Figure 2, an automatic welding device for metal parts, comprising a fixing unit 1 and a positioning welding unit 2, the positioning welding unit 2 is arranged on the fixing unit 1 for positioning welding between the branch pipe and the main pipe of the dust collector blowing pipe; the fixing unit 1 comprises a fixing table 11, the fixing table 11 is provided with an arc groove, the fixing table 11 is provided with a positioning frame 12, the left side of the fixing table 11 is provided with a rectangular sliding groove 13, and the rectangular sliding groove 13 is connected with an electric slider 14 in a sliding fit manner; the positioning welding unit 2 comprises a distance control cylinder 21, the upper end of the electric slider 14 is fixedly installed with the distance control cylinder 21, the telescopic end of the distance control cylinder 21 is fixedly installed with an L-shaped bracket 22, and the longitudinal section of the L-shaped bracket 22 from front to back and the telescopic end of the distance control cylinder 21 are fixedly connected A rotating frame 23 is provided on the front side of the transverse section of the L-shaped bracket 22, a rectangular plate 24 is fixedly installed on the front end of the rotating frame 23, a sleeve column 1 25 is fixedly installed in the middle of the rectangular plate 24, and sleeve columns 26 and sleeve columns 3 27 are symmetrically connected in a sliding manner from near to far on the rectangular plate 24 and located on the front and rear sides of the sleeve column 1 25. A distance adjusting frame 28 is commonly provided on the sleeve columns 1 25, 26 and 3 27, and an electric welding head 29 is fixedly installed on the right ends of the sleeve columns 1 25, 26 and 3 27. A driving frame 30 is provided on the upper end of the rectangular plate 24, 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 pushing plate 33 is evenly fixedly installed on the right end of the linkage frame 32.

[0038] First, the main pipe with the welding hole opening upward is supported by the positioning frame 12 and centered in the front-to-back direction. At this time, according to the distance between the welding holes on the main pipe, the distance between the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 is adjusted by the distance adjusting frame 28. While adjusting the distance between the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27, the distance adjusting frame 28 drives the linkage frame 32 to adjust the distance between the pusher plates 33, and then the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 are driven by the electric slider 14 to move on the horizontal plane until the sleeve column 3 27 on the rear side is aligned with the main pipe. The welding holes on the rear side are aligned, and the distance control cylinder 21 drives the L-shaped bracket 22, the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to move downward synchronously until the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 are inserted into the hole on the main pipe. At this time, the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 are adjusted to align the center line of the welding hole on the main pipe with the center line of the sleeve column 1 25. At this time, the positioning frame 12 is adjusted to clamp and fix the main pipe. At this time, the welding hole of the main pipe is vertically upward, and the distance control cylinder 21 drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to return to the initial position. The worker places a plurality of branch pipes to be welded on the sleeve column 25, the sleeve column 26 and the sleeve column 3 27, and adjusts the sleeve column 25, the sleeve column 26 and the sleeve column 3 27 to support and fix the inner ring wall of the branch pipe. At this time, the sleeve column 25, the sleeve column 26 and the sleeve column 3 27 are driven by the rotating frame 23 to turn 180° clockwise, and then the alignment welding process is carried out. First, the sleeve column 25, the sleeve column 26 and the sleeve column 3 27 are driven downward by the distance control cylinder 21. 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 26 and the sleeve column 3 27 return to their initial positions. The electric slider 14 drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to move horizontally forward to the top of the next group of welding holes, and repeats the alignment welding process.

[0039] See also Figure 2The positioning frame 12 includes a circular abutment plate 121, and the arc-shaped groove on the fixed platform 11 is symmetrically connected to the circular abutment plate 121 in a sliding manner. A bidirectional screw 122 is rotatably connected to the fixed platform 11, and the front and rear sides of the bidirectional screw 122 are connected to the adjacent circular abutment plates 121 in a threaded manner. A rectangular extrusion plate 123 is symmetrically connected to the left and right sides of the arc-shaped groove on the fixed platform 11 in a sliding manner. A bidirectional screw 124 is rotatably connected to the middle of the fixed platform 11, and the left and right sides of the bidirectional screw 124 are connected to the adjacent rectangular extrusion plates 123 in a threaded manner; the bidirectional screw 122 drives the circular abutment plate 121 to move toward each other, thereby positioning and extruding the front and rear sides of the main pipe, so that the main pipe Centered in the front-to-back direction, the rectangular extrusion plate 123 is driven to move toward each other by the bidirectional screw 2 124 to support the main pipe with the welding hole opening facing upward. When the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 align the center line of the welding hole on the main pipe with the center line of the sleeve column 1 25, the rectangular extrusion plate 123 is driven to move away from each other by the bidirectional screw 2 124, and the circular support plate 121 is driven to move away from each other by the bidirectional screw 1 122 to move the main pipe downward to ensure that its lower end is in close contact with the fixed platform 11, and the rectangular extrusion plate 123 is driven to move toward each other by the bidirectional screw 2 124 again, and the circular support plate 121 is driven to move toward each other by the bidirectional screw 1 122 to clamp and fix the main pipe. At this time, the welding hole of the main pipe is vertically facing upward and fixed in the center.

[0040] See also Figure 4 The rotating frame 23 includes a second motor 231, and the second motor 231 is fixedly installed on the front end of the L-shaped bracket 22 through a motor seat. The output shaft of the second 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, and 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 that match the bevel gear 232, and the front end of the rotating circular plate 233 is fixedly installed with a rectangular plate 24; the bevel gear 232 is driven to rotate by the second motor 231, and with the cooperation of the fan-shaped groove 234, the rotating circular plate 233 can be driven to rotate 180°.

[0041] See also Figure 2 , Figure 3 and Figure 4The distance adjustment frame 28 includes a moving block 281, a moving block 281 is fixedly installed on the upper side of the second sleeve column 26, a connecting block 282 is symmetrically fixedly installed on the front and rear ends of the sleeve column 1 25, and a connecting block 283 is fixedly installed on the end of the sleeve column 3 27 facing the sleeve column 1 25. The connecting block 1 282 and the connecting block 2 283 on the same side are connected to the moving block 281 in a sliding manner. The moving block 281 and the connecting block 1 282 and the moving block 281 and the connecting block 2 283 are fixedly connected by a cylindrical spring 284. The right end of the sleeve column 3 27 is fixedly installed with a limited distance block 285. A bidirectional screw rod 3 286 is rotatably connected to the rectangular plate 24, and the front and rear sides of the bidirectional screw rod 3 286 are respectively connected to the adjacent distance limit blocks 285 by threaded connection; the distance between the two distance limit blocks 285 is adjusted by rotating the bidirectional screw rod 3 286, and with the cooperation of the connecting block 1 282 and the connecting block 2 283 as well as the moving block 281 and the cylindrical spring 284, the distance between the sleeve column 1 25 and the sleeve column 26 and the sleeve column 26 and the sleeve column 3 27 are changed, and it is ensured that the distance between the sleeve column 1 25 and the sleeve column 26 is equal to the distance between the sleeve column 26 and the sleeve column 3 27.

[0042] See also Figure 1 , Figure 2 and Figure 3 The driving frame 30 includes a right-angle bracket 301, the right-angle bracket 301 is fixedly installed on the upper end of the rectangular plate 24, a positioning circular plate 302 is fixedly installed on the lower end of the horizontal section of the right-angle bracket 301, a motor 303 is fixedly installed on the upper end of the horizontal section of the right-angle bracket 301 through a motor seat, a cylindrical gear 304 is fixedly installed on the output shaft of the motor 303 through 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; the cylindrical gear 304 is driven to rotate by the motor 1 303, thereby driving the rotating gear ring 305 to rotate.

[0043] See also Figure 3 The distance control frame 31 includes a threaded rod 311, and the lower end of the horizontal section of the right-angle bracket 301 is rotatably connected to the threaded rod 311 that 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. A rectangular block 313 is connected to the threaded rod 311 in a threaded manner. A rotating ring 314 is rotatably connected to the threaded rod 311 and located on the lower side of the connecting rod 312. A guide rod 315 that slides through the rectangular block 313 is fixedly installed on the left side of the lower end of the rotating ring 314; the threaded rod 311 is driven to rotate by rotating the gear ring 305, and the rotation of the threaded rod 311 drives the rectangular block 313 to move on the vertical plane, and the rectangular block 313 is limited and guided by the guide rod 315.

[0044] See also Figure 1 , Figure 3 and Figure 6 The linkage frame 32 includes a limiting plate 321, a limiting plate 321 is fixedly installed on the right end of the rectangular block 313, a fixing plate 1 322 is fixedly installed in the middle of the limiting plate 321, a fixing plate 2 323 and a fixing plate 324 are symmetrically connected in a sliding manner from near to far on the limiting plate 321 and located on the front and rear sides of the fixing plate 1 322, a compensation plate 325 is fixedly installed on the left end of the fixing plate 2 323, a compensation block 1 326 is symmetrically fixedly installed on the front and rear ends of the fixing plate 1 322, and compensation blocks 2 327 are fixedly installed on the opposite ends of the two fixing plates 324, and adjacent compensation blocks 1 326 and compensation blocks 2 327 are slidably connected to the corresponding compensation plates 325, and the compensation blocks 1 326 and the compensation plates 325 and the compensation blocks 2 327 and the compensation plates 325 are fixed A fixing spring 328 is connected, and a bending rod 329 is fixedly installed on the left end of the connecting block 283. The vertical section of the bending rod 329 slides through the compensation block 2 327, and a pushing plate 33 is fixedly installed on the lower right end of the fixing plate 1 322, the fixing plate 2 323 and the fixing plate 3 24; when the distance between the two limiting blocks 285 changes, driven by the bending rod 329, the distance between the compensation block 2 327 on the front and rear sides changes accordingly, and under the cooperation of the compensation block 1 326 and the compensation block 2 327 and the compensation plate 325 and the fixing spring 328, the distance between the fixing plate 1 322 and the fixing plate 2 323 and between the fixing plate 2 323 and the fixing plate 3 324 are the same, and the distance between the fixing plate 1 322 and the fixing plate 2 323 is the same as the distance between the sleeve column 1 25 and the sleeve column 2 26.

[0045] See also Figure 3 and Figure 5The middle part of the sleeve column 25 is rotatably connected with a control rod 251, and a plurality of spiral grooves 252 are evenly arranged on the control rod 251. A sprocket wheel 253 is rotatably connected to the upper end of the control rod 251. 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 with extension rods 255 in a sliding fit manner. The spiral grooves 252 are all connected with truncated cone blocks 256 in a threaded connection manner. The truncated cone blocks 256 and the sleeve column 25 are connected by a screw thread. The truncated cone block 256 is connected with the corresponding extension rod 255 in a sliding manner. The ends of the extension rods 255 on the same side are fixedly connected with a contact column 257. The contact column 257 is slidably connected with the sleeve column 25. The structures of the sleeve column 26 and the sleeve column 3 27 are the same as the structure of the sleeve column 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 connected with A connecting spring 244 is fixedly connected between the rectangular grooves 242, and a sprocket wheel 245 is rotatably connected to the upper end of the sliding block 243. All sprocket wheels 1 253 and sprocket wheels 2 245 are connected to each other through a toothed chain belt 1 258. A control handle 259 is fixedly installed on the upper end of the front sleeve column 3 27. The sprocket wheel 1 253 on it is driven to rotate by rotating the control handle 259, and then the toothed chain belt 1 258 cooperates with other sprocket wheels 1 253 and sprocket wheels 2 245, so that all sprocket wheels 1 253 rotate synchronously, driving the corresponding control rod 251 to rotate. Thereby, the truncated cone block 256 is driven to move on the control rod 251. The movement of the truncated cone block 256 changes the length of the extending column extending out of the sleeve column 25, thereby changing the distance that the contact column 257 extends out of the sleeve column 25, so that the sleeve column 25 can support and fix branch pipes of different diameters. When the distance between the sleeve columns 25 changes, the connecting springs 244 on the left and right sides are subjected to different forces, thereby driving the sliding block 243 and the sprocket 245 to move, compensating for the changed distance between the sleeve columns 25, and ensuring that the toothed chain belt 258 is always in a tensioned state.

[0046] See also Figure 5 The contact column 257 is evenly provided with adsorption grooves 2571, and each adsorption groove 2571 on the contact column 257 is connected to each other. 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 bottom of the contact column 257 are fixedly connected with elastic connecting tubes 2574, and the ends of the connecting tubes 2574 are fixedly connected to the control tube 2573. The air between the branch tubes is sucked out of the adsorption grooves 2571 through the micro air pump 2572, so that the branch tubes are adsorbed and fixed, to prevent the branch tubes from falling when the sleeve column 255 is vertically flipped and moved forward.

[0047] See also Figure 8 The welding method of the above-mentioned metal parts automatic welding device comprises the following steps:

[0048] S1. Preliminary adjustment: First, the main pipe with the welding hole opening upward is supported by the positioning frame 12, and the distance between the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 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.

[0049] S2. Alignment adjustment: The electric slider 14 drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to move on the horizontal plane, so that the sleeve column 3 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 sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to move downward synchronously until they are inserted into the hole on the main pipe. At this time, the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 are adjusted to align the center line of the welding hole on the main pipe with the center line of the sleeve column 1 25.

[0050] S3, fixed loading: at this time, adjust the positioning frame 12 to clamp and fix the main pipe, and the distance control cylinder 21 drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to return to the initial position, and drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to turn 180° counterclockwise through the rotating frame 23. The worker puts multiple branch pipes to be welded on the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27, adjusts the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to support and fix the inner ring wall of the branch pipe, and drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to turn 180° clockwise through the rotating frame 23.

[0051] S4, alignment welding: the distance control cylinder 21 drives the sleeve column 1 25, the sleeve column 26 and the sleeve column 3 27 to move downward and extend into the welding hole, the driving frame 30 drives the push plate 33 to move downward, and pushes the branch pipe to the lowest side of the branch pipe and the welding hole on the main pipe to be aligned and close, and the welding holes on the branch pipe and the main pipe are welded by the electric welding head 29. After welding, the electric welding head 29 and the sleeve column 1 25, the sleeve column 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 26 and the sleeve column 3 27 to move horizontally forward to the top of the next group of welding holes.

[0052] 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.

[0053] In the description of the present invention, it is necessary to understand that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In addition, the terms "first", "second", "number one", "number two", "one", "two" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, 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 method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in 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 connected symmetrically 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).

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: The linkage frame (32) comprises a limiting plate (321), a limiting plate (321) is fixedly installed on the right end of the rectangular block (313), a fixing plate 1 (322) is fixedly installed in the middle of the limiting plate (321), a fixing plate 2 (323) and a fixing plate 3 (324) are symmetrically connected in a sliding manner from near to far on the limiting plate (321) and located on the front and rear sides of the fixing plate 1 (322), a compensation plate (325) is fixedly installed on the left end of the fixing plate 2 (323), a compensation block 1 (326) is symmetrically fixedly installed on the front and rear ends of the fixing plate 1 (322), and the opposite ends of the two fixing plates 3 (324) are fixedly installed with compensation blocks. Block 2 (327), adjacent compensation blocks 1 (326) and compensation blocks 2 (327) are slidably connected to the corresponding compensation plates (325), and a fixing spring (328) is fixedly connected between the compensation block 1 (326) and the compensation plate (325) and between the compensation block 2 (327) and the compensation plate (325). A bending rod (329) is fixedly installed on the left end of the connecting block 2 (283), and the vertical section of the bending rod (329) slides through the compensation block 2 (327). A push plate (33) is fixedly installed on the lower right ends of the fixing plate 1 (322), the fixing plate 2 (323) and the fixing plate 3 (324).

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.

Images