CN117754097A - Composite gear and plasma welding device thereof - Google Patents

Abstract

The invention relates to the technical field of gears and plasma welding devices thereof, and provides a composite gear and a plasma welding device thereof, which adopt a split structure to realize split manufacturing of the gears and form the composite gear so as to achieve the optimal use of materials of all parts.

Description

Composite gear and plasma welding device thereof

Technical Field

The invention relates to the technical field of gears and plasma welding devices thereof, in particular to a composite gear and a plasma welding device thereof.

Background

As is well known, gear transmission is a common transmission form in mechanical transmission, and the gear transmission structure is a gear tooth structure of a gear, so that the gear teeth are also main abrasion structures in the gear transmission motion process, the service life of the gear is prolonged for reducing abrasion of the gear teeth, most gears need to be processed by special materials or special processes, so that the manufacturing cost of the gears is reduced, the service life of the gears is prolonged, and a composite gear and a plasma welding device thereof are provided.

According to the invention, the invention patent with the Chinese patent application number of CN202210426373.X discloses a plasma welding device, which is roughly described as comprising a welding machine and a welding gun, wherein an adjusting cavity is arranged on the welding gun, a plurality of adjusting plates are installed in the adjusting cavity, one side surface of each adjusting plate is in a streamline shape, the side wall of each adjusting plate is connected with the inner wall of the adjusting cavity through two groups of telescopic components, the side wall of each adjusting plate is rotationally connected with a swinging rod, the inner wall of the adjusting cavity is provided with a blocking plate, one end of each blocking plate, which is far away from the swinging rod, is rotationally connected with the inner wall of the adjusting cavity through a rotating shaft, the inner wall of each adjusting cavity is slidably connected with a sliding seat, the upper end of each sliding seat is provided with a supporting wheel, the side wall of each supporting wheel is contacted with the side wall of each wedge-shaped part, the side wall of each sliding seat is fixedly connected with a connecting rod, each connecting rod is rotationally connected with the swinging rod, and each side wall of each blocking plate is also provided with an adjusting component.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides a composite gear and a plasma welding device thereof, which adopt a split structure to realize split manufacturing of the gear and form the composite gear so as to realize the optimal use of materials of all parts, and the whole assembly manufacturability of the matched composite gear realizes automatic welding, so that the welding efficiency is further improved and the device is more practical.

(II) technical scheme

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a compound gear and plasma welding device thereof, includes welding machine and welder, still includes compound gear, robot and workstation, the welder is installed on the actuating arm of robot, the welding machine matches with welder, compound gear includes inner mounting ring, outer link and a plurality of teeth of a cogwheel of mutually supporting, welder is used for mutual welding between inner mounting ring and the outer link and the mutual welding between a plurality of teeth of a cogwheel all and the outer link, fixedly connected with mounting bracket and auxiliary frame on the workstation, install the reference cylinder on the mounting bracket in the rotation, install a plurality of first inner support and a plurality of second inner support on the reference cylinder, a plurality of first inner support and a plurality of second inner support all are used for the inner support of outer link, install driving structure in the mounting bracket, driving structure is used for the rotation drive of mounting bracket, the synchronous opening of a plurality of first inner support and the synchronous opening of a plurality of second inner support, installs the conveyer belt on the workstation, install a plurality of positioning frames on the conveyer belt, a plurality of inner support and a plurality of guide posts and a plurality of auxiliary frames are all provided with the fixed connection, a plurality of guide posts are connected with the fixed connection, a plurality of guide screws are all provided with the fixed connection, a plurality of guide posts are connected with the guide screws, a plurality of guide posts are connected with each other, a plurality of guide posts are connected with the fixed connection, a plurality of guide posts are connected with each other in parallel connection, and are connected with each other in a fixed connection, the movable frame is provided with an electric driving rod, a telescopic rod of the electric driving rod is connected with the lifting block, the lifting block is provided with a supporting frame, a plurality of inner grooves are formed in the supporting frame, a plurality of first elastic bags and a plurality of second elastic bags are connected in the inner grooves, the first elastic bags are connected with inner supporting plates, the inner supporting plates are connected with the second elastic bags respectively, and the inner supporting plates are used for tightly supporting an inner mounting ring.

On the basis of the scheme, the driving structure comprises a second servo motor, a driving cylinder, a driving rod and two electric telescopic rods, the driving cylinder is in sliding connection in the positioning cylinder, the driving rod is in sliding connection in the driving cylinder, a mounting plate is fixedly connected in the mounting frame, the second servo motor and the two electric telescopic rods are all mounted on the mounting plate, a driving gear is mounted on an output shaft of the second servo motor, a driven toothed ring is mounted on the positioning cylinder, the driving gear is meshed with the driven toothed ring, an inner transmission plate and an outer transmission plate are mounted on telescopic rods of the two electric telescopic rods respectively, the inner transmission plate is in rotating connection with the driving cylinder, the outer transmission plate is in rotating connection with the driving rod, a plurality of driving laths are in sliding connection with a plurality of driving sleeve plates respectively hinged with a plurality of first inner brackets, a plurality of rotating ear plates are in rotating connection with the driving sleeve plates, a plurality of driving sleeve plates are in sliding connection with the driving sleeve plates respectively, and a plurality of inner supporting brackets are arranged between the driving sleeve plates and the second positioning cylinder and the positioning cylinder respectively.

On the basis of the above scheme, a plurality of guide structures all include guide cylinder, a plurality of guide cylinder all with positioning tube fixed connection, a plurality of guide cylinder in all sliding connection have the guide bar, a plurality of on the guide bar all fixedly connected with carriage, a plurality of the sliding tray has all been seted up to first interior strut and a plurality of second interior strut, a plurality of sliding tray respectively sliding connection is in a plurality of in the sliding tray.

On the basis of the scheme, a guide vertical frame is fixedly connected to the mounting frame, a lifting frame is connected to the guide vertical frame in a sliding mode, an electric adjusting rod for lifting control of the lifting frame is arranged at the bottom end of the guide vertical frame, a sliding opening and a mounting opening are formed in the lifting frame, an alignment frame is connected to the sliding opening in a sliding mode, an electric pushing rod is arranged in the mounting opening, and a telescopic rod of the electric pushing rod is connected with the alignment frame.

On the basis of the scheme, a guide hole is formed in the support frame, the guide hole is communicated with a branch hole, a plurality of branch holes are respectively communicated with a plurality of first elastic bags and a plurality of second elastic bags, a quick connecting pipe is communicated with the guide hole, and the quick connecting pipe is connected with the lifting block.

On the basis of the scheme, a plurality of sliding grooves are formed in the outer connecting ring, and submerged arc filling holes are formed in the sliding grooves.

On the basis of the scheme, a plurality of penetrating strip holes are formed in the positioning cylinder, a plurality of driving sleeve plates are connected with first connecting shafts in a rotating mode, a plurality of driving sleeve rods are connected with second connecting shafts in a rotating mode, and the first connecting shafts and the second connecting shafts are fixedly connected in the penetrating strip holes respectively.

On the basis of the scheme, side openings are formed in the embedding grooves, and the side openings are respectively communicated with the embedding grooves.

On the basis of the scheme, a plurality of driving pieces are fixedly connected to the threaded rods, and a plurality of opening grooves are formed in the driving pieces.

(III) beneficial effects

Compared with the prior art, the invention provides a composite gear and a plasma welding device thereof, which have the following beneficial effects:

1. according to the invention, through the design of the composite gear, the split manufacturing of the gear is realized, the composite gear is formed, and the split structure is adopted, so that the optimal use of materials of all parts is realized.

2. According to the invention, the supporting and positioning structure of the outer connecting ring is formed through the matching of the positioning cylinder, the first inner supporting frame and the second inner supporting frame, the clamping and positioning of the gear teeth are realized through the matching of the conveying belt, the positioning frame, the threaded rod, the compression column, the connecting spring and the circular sheet, the outer connecting ring which can be matched and supported for positioning is formed into relative insertion adjustment, so that the welding of a plurality of gear teeth relative to the outer connecting ring is facilitated, and the supporting structure matched with the inner mounting ring is formed through the matching of the supporting frame, the first elastic bag, the second elastic bag and the inner supporting plate, so that the gear teeth can be conveniently placed in the inner mounting ring after the welding of the gear teeth relative to the outer connecting ring is finished.

3. According to the invention, a welding machine, a welding gun and a robot are used for matching with the composite gear to form a welding execution structure, so that the composite gear welding operation is realized.

Drawings

FIG. 1 is a schematic perspective view of the whole structure of the present invention;

FIG. 2 is a schematic view of a partial enlarged structure of the present invention at A in FIG. 1;

FIG. 3 is a schematic view of a partially enlarged structure of the present invention at B in FIG. 1;

FIG. 4 is a schematic perspective view of the cooperation of the workbench, the mounting frame and the driving cylinder;

FIG. 5 is a schematic perspective view of another angle of the whole of the present invention;

FIG. 6 is a schematic view of a partially enlarged structure of the present invention at C in FIG. 5;

FIG. 7 is a schematic view of a partially enlarged structure of the present invention at D in FIG. 5;

FIG. 8 is a schematic perspective view of the first inner bracket, the second inner bracket, the driving cylinder, etc. of the present invention;

FIG. 9 is a schematic perspective view of the positioning barrel, the guiding barrel, the first connecting shaft and the like of the present invention;

FIG. 10 is a schematic exploded perspective view of the drive cylinder and drive rod of the present invention mated;

FIG. 11 is a schematic perspective view of the inner mounting ring, outer connecting ring and gear teeth of the present invention;

FIG. 12 is a schematic exploded perspective view of the inner mounting ring, outer connecting ring and gear teeth of the present invention;

FIG. 13 is a schematic perspective view of the support frame, first and second elastic bladders of the present invention;

FIG. 14 is a schematic perspective view of the mounting plate, drive gear and second servomotor of the present invention;

fig. 15 is a schematic perspective view of the guide rod and the sliding frame of the present invention.

In the figure: 1. a welding gun; 2. a work table; 3. an inner mounting ring; 4. an outer connecting ring; 5. gear teeth; 6. a mounting frame; 7. an auxiliary frame; 8. a positioning cylinder; 9. a first inner strut; 10. a second inner strut; 11. a conveyor belt; 12. a positioning frame; 13. an embedding groove; 14. a threaded rod; 15. a compression column; 16. a connecting spring; 17. a wafer; 18. a fixed rod; 19. a moving rack; 20. a lifting block; 21. a screw rod; 22. a support frame; 23. a first elastic bladder; 24. a second elastic bladder; 25. an inner support plate; 26. a drive cylinder; 27. a driving rod; 28. a mounting plate; 29. a drive gear; 30. a driven toothed ring; 31. an inner drive plate; 32. an outer drive plate; 33. driving the lath; 34. driving the sleeve plate; 35. rotating the ear plate; 36. driving the loop bar; 37. a guide cylinder; 38. a guide rod; 39. a carriage; 40. guiding the vertical frame; 41. a lifting frame; 42. an alignment rack; 43. a quick connecting pipe; 44. sliding into the groove; 45. submerged arc filling holes; 46. penetrating the strip hole; 47. a first connecting shaft; 48. a second connecting shaft; 49. a side opening; 50. a driving member.

Detailed Description

Examples

Referring to fig. 1-15, a composite gear and a plasma welding device thereof, including a welding machine and a welding gun 1, and also including a composite gear, a robot and a workbench 2, wherein the welding gun 1 is mounted on an actuating arm of the robot, the welding machine is matched with the welding gun 1, the welding machine, the welding gun 1 and the robot form a welding actuating structure through the matched composite gear, the composite gear realizes the welding operation of the composite gear, the composite gear comprises an inner mounting ring 3, an outer connecting ring 4 and a plurality of gear teeth 5 which are mutually matched, a plurality of sliding grooves 44 are arranged on the outer connecting ring 4, submerged arc filling holes 45 are arranged in the sliding grooves 44, the split manufacturing of the gear is realized through the design of the composite gear, the composite gear is formed, a split structure is adopted, and different materials and processes are adopted between the parts conveniently to achieve the optimal use of the materials of the parts, the welding gun 1 is used for welding the inner mounting ring 3 and the outer connecting ring 4 and welding the plurality of gear teeth 5 and the outer connecting ring 4, the worktable 2 is fixedly connected with a mounting frame 6 and an auxiliary frame 7, the mounting frame 6 is rotatably provided with a positioning cylinder 8, the positioning cylinder 8 is provided with a plurality of first inner supporting frames 9 and a plurality of second inner supporting frames 10, the plurality of first inner supporting frames 9 and the plurality of second inner supporting frames 10 are used for inner tightening of the outer connecting ring 4, a tightening positioning structure of the outer connecting ring 4 is formed by the matching of the positioning cylinder 8, the first inner supporting frames 9 and the second inner supporting frames 10, a driving structure is arranged in the mounting frame 6, the driving structure comprises a second servo motor, a driving cylinder 26, a driving rod 27 and two electric telescopic rods, the driving cylinder 26 is slidably connected in the positioning cylinder 8, the driving rod 27 is slidably connected in the driving cylinder 26, a mounting plate 28 is fixedly connected in the mounting frame 6, the second servo motor and two electric telescopic rods are both arranged on the mounting plate 28, a driving gear 29 is arranged on the output shaft of the second servo motor, a driven toothed ring 30 is arranged on the positioning cylinder 8, the driving gear 29 and the driven toothed ring 30 are meshed with each other, an inner transmission plate 31 and an outer transmission plate 32 are respectively arranged on the telescopic rods of the two electric telescopic rods, the inner transmission plate 31 is rotationally connected with the driving cylinder 26, the outer transmission plate 32 is rotationally connected with the driving rod 27, a plurality of driving laths 33 are rotationally connected on the driving rod 27, a plurality of driving laths 33 are respectively and slidingly connected with a plurality of driving sleeve plates 34, a plurality of rotating ear plates 35 are rotationally connected on the driving cylinder 26, a plurality of driving sleeve rods 36 are respectively and slidingly connected with a plurality of second inner supporting frames 10, guide structures are respectively arranged between the first inner brackets 9 and the positioning cylinder 8 and between the second inner brackets 10 and the positioning cylinder 8, the guide structures comprise guide cylinders 37, the guide cylinders 37 are fixedly connected with the positioning cylinder 8, guide rods 38 are respectively and slidably connected in the guide cylinders 37, sliding brackets 39 are respectively and fixedly connected to the guide rods 38, sliding grooves are respectively formed in the first inner brackets 9 and the second inner brackets 10, the sliding brackets 39 are respectively and slidably connected in the sliding grooves, a plurality of penetrating strip holes 46 are formed in the positioning cylinder 8, a first connecting shaft 47 is respectively and rotatably connected to the driving sleeve plates 34, a second connecting shaft 48 is respectively and rotatably connected to the driving sleeve rods 36, the first connecting shafts 47 and the second connecting shafts 48 are respectively and fixedly connected in the penetrating strip holes 46, and the driving structures are used for rotationally driving the positioning cylinder 8, the synchronous opening of the plurality of first inner brackets 9 and the synchronous opening of the plurality of second inner brackets 10.

It should be further noted that, the workbench 2 is provided with the conveyer belt 11, the conveyer belt 11 is provided with a plurality of positioning frames 12, the plurality of positioning frames 12 are provided with embedded grooves 13 matched with the gear teeth 5, the plurality of embedded grooves 13 are provided with side openings 49, the plurality of side openings 49 are respectively communicated with the plurality of embedded grooves 13, the gear teeth 5 are inserted into the sliding grooves 44 and can escape from the positioning frames 12 along with the rotation of the outer connecting ring 4 after finishing relative welding, the convenience is provided for the subsequent movement of the gear teeth 5, the conveyer belt 11 is matched with a lifting table, the lifting table is slidably connected on the mounting table, the mounting table is provided with an electric pushing structure for adjusting the height of the lifting table relative to the mounting table, the adjustment of the outer connecting ring 4 matched with different diameter sizes is facilitated, the regulation of the movement height of the gear teeth 5 is realized, the plurality of positioning frames 12 are connected with threaded rods 14 in a threaded manner, the plurality of positioning frames 12 are all connected with the compression column 15 in a sliding way, the plurality of compression columns 15 are all connected with the connecting springs 16, the plurality of connecting springs 16 are all fixedly connected with the circular plates 17, the plurality of circular plates 17 are respectively connected with the plurality of threaded rods 14 in a rotating way, the clamping and positioning of the gear teeth 5 are realized through the matching of the conveying belt 11, the positioning frames 12, the threaded rods 14, the compression columns 15, the connecting springs 16 and the circular plates 17, the outer connecting rings 4 which can be matched and supported tightly for positioning form relative insertion adjustment, the welding of the plurality of gear teeth 5 relative to the outer connecting rings 4 is convenient, the driving piece 50 is fixedly connected on the plurality of threaded rods 14, a plurality of opening grooves are arranged on the driving piece 50, the rotation driving of the threaded rods 14 is convenient, the automatic rotation of the threaded rods 14 is further improved, a third servo motor can also be matched and installed for the threaded rods 14, so as to realize the automatic clamping of the gear teeth 5, two fixing rods 18 are fixedly connected between the auxiliary frame 7 and the mounting frame 6, a movable frame 19 is slidably connected on the two fixing rods 18, a lifting block 20 is slidably connected on the movable frame 19, a lead screw 21 is rotatably connected between the mounting frame 6 and the auxiliary frame 7, the lead screw 21 is in threaded connection with the movable frame 19, a first servo motor for rotatably driving the lead screw 21 is installed in the mounting frame 6, an electric driving rod is installed on the movable frame 19, a telescopic rod of the electric driving rod is connected with the lifting block 20, a supporting frame 22 is installed on the lifting block 20, a plurality of inner grooves are formed on the supporting frame 22, a plurality of first elastic bags 23 and a plurality of second elastic bags 24 are connected in the plurality of inner grooves, an inner supporting plate 25 is respectively connected with the plurality of second elastic bags 24, the plurality of inner supporting plates 25 are used for supporting the inner mounting ring 3, through the cooperation of the support frame 22, the first elastic bag 23, the second elastic bag 24 and the inner supporting plate 25, a supporting structure matched with the inner mounting ring 3 is formed, the inner mounting ring 3 is conveniently placed in the gear teeth 5 after the welding of the outer connecting ring 4 is finished, guide holes are formed in the support frame 22, the guide holes are communicated with branch holes, the branch holes are respectively communicated with the first elastic bags 23 and the second elastic bags 24, the guide holes are communicated with quick connecting pipes 43, the quick connecting pipes 43 are connected with the lifting blocks 20, the guide vertical frame 40 is fixedly connected on the mounting frame 6, the lifting frame 41 is connected in a sliding manner in the guide vertical frame 40, an electric adjusting rod for lifting control of the lifting frame 41 is arranged at the bottom end of the guide vertical frame 40, a sliding opening and a mounting opening are formed in the lifting frame 41, an alignment frame 42 is connected in the sliding opening, an electric pushing rod is arranged in the mounting opening, the telescopic rod of the electric pushing rod is connected with the alignment frame 42, the gear teeth 5 are conveniently limited in the inserting process relative to the outer connecting ring 4.

The first servo motor, the electric driving rod, the second servo motor, the electric telescopic rod, the electric adjusting rod, the electric pushing structure and the third servo motor in the embodiment are all conventional devices which are purchased in the market and are known to those skilled in the art, and can be customized according to actual needs, in the patent, only the structure and the function of the first servo motor, the electric driving rod, the installation mode and the electric connection mode of the first servo motor, the second servo motor, the electric driving rod, the second servo motor, the electric telescopic rod, the electric adjusting rod, the electric pushing structure and the third servo motor are not repeated, the first servo motor, the electric driving rod, the second servo motor, the electric telescopic rod, the electric pushing structure and the third servo motor are respectively provided with PLC controllers matched with the first servo motor, the electric driving rod, the electric pushing structure and the third servo motor, the eight PLC controllers are installed into a control computer through an integrated circuit, and work control of the first servo motor, the electric driving rod, the second servo motor, the electric telescopic rod, the electric pushing rod, the electric motor and the electric pushing rod and the third servo motor can be realized through conversion of the PLC controllers.

In summary, the working process of the composite gear and the plasma welding device thereof is that, when in use, the plasma welding device is firstly placed at a place where the composite gear is required to be used, and a control computer, a first servo motor, an electric driving rod, a second servo motor, an electric telescopic rod, an electric adjusting rod, an electric pushing structure and a third servo motor are communicated with an external municipal power supply circuit, then the work of the electric driving rod is realized through the control computer, the height adjustment of the lifting frame 41 relative to the positioning cylinder 8 is realized, the alignment between the inner mounting ring 3 and the outer connecting ring 4 is prepared in the subsequent working process, the work of the electric pushing structure is realized through the control computer, the height adjustment of the conveying belt 11 is realized, the alignment adjustment of the gear teeth 5 relative to the outer connecting ring 4 in the subsequent working process is realized, the adjustment can be realized by inputting data into a control computer according to parameters of a composite gear to be welded, and the sensor can be installed through the corresponding part, so as to realize the automatic work of an electric driving rod and an electric pushing structure, realize the matched adjustment of the heights of the support frame 22 and the conveyer belt 11, sleeve the outer connecting ring 4 relative to the positioning cylinder 8 after the adjustment is finished, realize the withdrawal of the first inner support frame 9 and the second inner support frame 10 by controlling the work of two electric telescopic rods, further realize the tightening and positioning of the outer connecting ring 4, and the plurality of first inner support frames 9 and the plurality of second inner support frames 10 are alternately arranged at intervals and are also independently controlled, so that the independent use of the plurality of first inner support frames 9 or the independent use of the plurality of second inner support frames 10 can be realized when the outer connecting ring 4 is tightened and positioned, to ensure exposure of the submerged arc fill hole 45.

Further, the conveyor belt 11 is started to enable the conveyor belt 11 to move, the gear teeth 5 are sequentially installed relative to the positioning frames 12 along with the movement of the conveyor belt 11, the threaded rod 14 is rotated to push the connecting springs 15 to match the pressing columns 15 to position the gear teeth 5, the positioned gear teeth 5 relatively approach and are inserted into the sliding grooves 44 along with the movement of the conveyor belt 11, then the robot works to realize the relative adjustment of the submerged arc filling holes 45 in the sliding grooves 44 correspondingly sliding in by the welding gun 1 relative to the gear teeth 5, the welding machine works to realize the filling welding of the corresponding submerged arc filling holes 45 along with the welding gun 1, the adhesion between the part formed by filling welding and the gear teeth 5 is realized, the relative positioning welding between the gear teeth 5 and the outer connecting rings 4 is realized, the robot realizes the withdrawal of the welding gun 1 after the welding is finished, the second servo motor works to realize the rotation driving of the positioning cylinder 8, the rotation of the positioning cylinder 8 can realize the rotation driving of the outer connecting ring 4, then realize the upper and lower sliding of the outer connecting ring 4 into the lowest position of the groove 44 for the insertion and welding of other gear teeth 5, the inner mounting ring 3 is sleeved on the support frame 22 after the welding of the gear teeth 5 is finished, the quick connection pipe 43 is communicated with an external air compressor, the external air compressor works as the first elastic bag 23 and the second elastic bag 24 to supply compressed air, the approach and contact supporting positioning of the inner supporting plate 25 relative to the inner mounting ring 3 are realized, after the positioning is finished, the first servo motor works to realize the rotation driving of the screw rod 21, then realize the position adjustment of the moving frame 19, the position adjustment of the support frame 22 and the inner mounting ring 3 thereon relative to the outer connecting ring 4 is realized through the movement of the moving frame 19 until the inner mounting ring 3 is inserted into the outer connecting ring 4, and a certain insertion depth is formed, finally, the relative position of the welding gun 1 relative to the inner mounting ring 3 and the outer connecting ring 4 is adjusted by the robot, welding is formed, the rotation driving of the positioning cylinder 8 is realized by the operation of a second servo motor along with the welding in the welding process, so that full welding of the annular connecting part between the inner mounting ring 3 and the outer connecting ring 4 is formed, after the welding is finished, the first inner supporting frame 9 and the second inner supporting frame 10 are enabled to act on the outer supporting frame 6, the supporting effect fails, then the moving frame 19 is controlled to move, the position of the welded composite gear can be realized, the dismounting after the welding of the composite gear is finished is assisted, and the overall outer diameter of the first inner supporting frames 9 is smaller, and meanwhile, the overall outer diameter of the second inner supporting frames 10 is smaller in the relative folding state, so that the inner supporting frames 6 can be assisted to be unfolded by the expanding of the second inner supporting frames 10 of the first inner supporting frames 9 after the movement of the conveying belt 11 is firstly positioned by the positioning frame 12 in the process of sleeving the outer connecting ring 4 on the positioning cylinder 8.

Claims (9)

1. The utility model provides a composite gear and plasma welding device thereof, includes welding machine and welder (1), its characterized in that still includes composite gear, robot and workstation (2), welder (1) are installed on the actuating arm of robot, the welding machine matches with welder (1), composite gear includes interior collar (3), outer go-between (4) and a plurality of teeth of a cogwheel (5) of mutually supporting, welder (1) are used for mutual welding between interior collar (3) and outer go-between (4) and a plurality of teeth of a cogwheel (5) all with the mutual welding between outer go-between (4), fixedly connected with mounting bracket (6) and auxiliary frame (7) on workstation (2), install positioning cylinder (8) on mounting bracket (6) rotation, install a plurality of first interior strut (9) and a plurality of second interior strut (10) on positioning cylinder (8), a plurality of first interior strut (9) and a plurality of second interior strut (10) all are used for welding each other between outer go-between (3) and outer go-between (4) and a plurality of teeth of cogwheel (5) all with the mutual welding between outer go-between (4), fixedly connected with mounting bracket (6) and auxiliary frame (7), install in (8) rotation of a positioning cylinder (8) have, a plurality of synchronous drive frame (10) in (8) are opened in a plurality of drive frame (8) have, and a synchronous drive frame (10), a plurality of positioning frames (12) are arranged on the conveying belt (11), a plurality of embedded grooves (13) matched with the gear teeth (5) are formed in the positioning frames (12), threaded rods (14) are connected to the positioning frames (12) in a threaded mode, compression columns (15) are connected to the positioning frames (12) in a sliding mode, connecting springs (16) are connected to the compression columns (15), discs (17) are fixedly connected to the connecting springs (16), the discs (17) are respectively connected with the threaded rods (14) in a rotating mode, two fixing rods (18) are fixedly connected between the auxiliary frame (7) and the mounting frame (6), a movable frame (19) is connected to the fixing rods (18) in a sliding mode, a lead screw (21) is connected to the mounting frame (6) and the auxiliary frame (7) in a rotating mode, the lead screw (21) is connected to the movable frame (19) in a threaded mode, an electric motor (21) is arranged in the mounting frame (6) in a rotating mode, a driving rod (22) is arranged on the driving rod (20), and a lifting block (20) is arranged in the driving rod (22) in the driving rod, and the driving rod (20) is connected to the lifting frame, a plurality of all be connected with a plurality of first elastic bag (23) and a plurality of second elastic bag (24) in the a plurality of in the recess, a plurality of all be connected with interior fagging (25) on the first elastic bag (23), a plurality of interior fagging (25) are connected with a plurality of second elastic bag (24) respectively, a plurality of interior fagging (25) all are used for the stretching of interior collar (3).

2. The composite gear and plasma welding device according to claim 1, wherein the driving structure comprises a second servo motor, a driving cylinder (26), a driving rod (27) and two electric telescopic rods, the driving cylinder (26) is slidably connected in the positioning cylinder (8), the driving rod (27) is slidably connected in the driving cylinder (26), a mounting plate (28) is fixedly connected in the mounting frame (6), the second servo motor and the two electric telescopic rods are both mounted on the mounting plate (28), a driving gear (29) is mounted on an output shaft of the second servo motor, a driven toothed ring (30) is mounted on the positioning cylinder (8), the driving gear (29) is meshed with the driven toothed ring (30), an inner transmission plate (31) and an outer transmission plate (32) are mounted on telescopic rods of the two electric telescopic rods respectively, the inner transmission plate (31) is rotatably connected with the driving cylinder (26), the outer transmission plate (32) is rotatably connected with the driving rod (27), a plurality of driving sleeves (34) are rotatably connected with a plurality of driving plates (33) and a plurality of driving plates (33) are rotatably connected with a plurality of driving sleeves (35), a plurality of all sliding connection has drive loop bar (36) on rotating otic placode (35), a plurality of drive loop bar (36) respectively with a plurality of second in strut (10) articulated, all install guide structure between a plurality of first in strut (9) and the positioning section of thick bamboo (8) and between a plurality of second in strut (10) and the positioning section of thick bamboo (8).

3. A composite gear and plasma welding device thereof according to claim 2, wherein a plurality of guiding structures comprise guiding drums (37), a plurality of guiding drums (37) are fixedly connected with the positioning drums (8), guiding rods (38) are fixedly connected in the guiding drums (37), sliding frames (39) are fixedly connected to the guiding rods (38), sliding grooves are formed in the first inner supporting frames (9) and the second inner supporting frames (10), and the sliding frames (39) are respectively and slidably connected in the sliding grooves.

4. A composite gear and a plasma welding device thereof according to claim 3, wherein a guiding vertical frame (40) is fixedly connected to the mounting frame (6), a lifting frame (41) is connected to the guiding vertical frame (40) in a sliding manner, an electric adjusting rod for lifting control of the lifting frame (41) is arranged at the bottom end of the guiding vertical frame (40), a sliding opening and a mounting opening are formed in the lifting frame (41), an alignment frame (42) is connected to the sliding opening in a sliding manner, an electric pushing rod is arranged in the mounting opening, and a telescopic rod of the electric pushing rod is connected with the alignment frame (42).

5. A composite gear and a plasma welding device thereof according to claim 4, wherein the support frame (22) is internally provided with a guide hole, the guide hole is communicated with a branch hole, a plurality of branch holes are respectively communicated with a plurality of first elastic bags (23) and a plurality of second elastic bags (24), the guide hole is communicated with a quick connecting pipe (43), and the quick connecting pipe (43) is connected with the lifting block (20).

6. A composite gear and a plasma welding device thereof according to claim 5, characterized in that the outer connecting ring (4) is provided with a plurality of slide-in grooves (44), and a plurality of submerged arc filling holes (45) are provided in the slide-in grooves (44).

7. The composite gear and plasma welding device according to claim 6, wherein the positioning cylinder (8) is provided with a plurality of penetrating strip holes (46), the driving sleeve plates (34) are respectively and rotatably connected with a first connecting shaft (47), the driving sleeve rods (36) are respectively and rotatably connected with a second connecting shaft (48), and the first connecting shafts (47) and the second connecting shafts (48) are respectively and fixedly connected in the penetrating strip holes (46).

8. A composite gear and a plasma welding apparatus thereof according to claim 7, wherein side openings (49) are provided in each of the plurality of the embedded grooves (13), and the plurality of side openings (49) are respectively communicated with the plurality of the embedded grooves (13).

9. A composite gear and plasma welding device thereof according to claim 8, wherein a plurality of driving members (50) are fixedly connected to a plurality of threaded rods (14), and a plurality of open grooves are formed in the driving members (50).