CN110919242A - Continuous welding mechanism of shaft coupling structure - Google Patents

Abstract

The invention relates to a continuous welding mechanism of a coupling structure, which comprises a frame and a conveying groove, wherein the center of the conveying groove is provided with a feeding groove, the lower part of the frame is provided with a feeding movable device, the feeding movable device is provided with a feeding clamping device, the upper surface of the conveying groove is provided with a flange plate conveying device, the flange plate conveying device comprises a flange plate conveying seat, the flange plate conveying seats are all provided with flange plate conveying blocks, the inner sides of the flange plate conveying blocks are flush with the inner wall of the conveying groove, the flange plate conveying blocks are connected with flange plate conveying transmission parts, the flange plate conveying transmission parts are matched with a flange plate conveying motor, the flange plate conveying seats are also provided with flange plate conveying interception blocks matched with the flange plate conveying blocks, the flange plate conveying block is provided with a flange plate matching arc opening matched with the flange plate, and the top of the rack is provided with a welding device matched with the flange plate in the intercepted flange plate conveying block; continuous welding is realized, and the occurrence of welding deviation is reduced.

Description

Continuous welding mechanism of shaft coupling structure

Technical Field

The invention relates to the field of processing of connecting structures, in particular to a continuous welding mechanism of a coupling structure.

Background

The connecting structure is a common mechanical structure, wherein the coupling structure is particularly extensive, and is mainly used for connecting a shaft end with other parts, most typically, a connecting part of the shaft and the shaft is called a coupler, as shown in fig. 2-3, the coupling structure is also a common coupling structure, and comprises a shaft sleeve 11, wherein the shaft sleeve is provided with a shaft hole 14, one end, which is not provided with the shaft hole 14, is provided with a screw 12 for connecting with other parts, in order to realize better connecting effect, an annular hole is arranged on the outer side of one end, which is provided with the screw 12, of the shaft sleeve 11, and is matched with a flange plate 13, so that better connecting and stabilizing effect is realized through a screw hole on the flange plate 13, the flange plate 13 and the shaft sleeve 11 are generally connected by welding, most of the existing welding methods are manual welding, and some methods are used for fixing the shaft sleeve 11 and the flange plate 13, and the welding is realized by a rotatable, the condition of welding deviation is easy to occur due to the rotating welding structure.

Disclosure of Invention

The invention aims to provide a continuous welding mechanism with a coupling structure, which adopts a conveying groove matched with a feeding device to realize the feeding of a shaft sleeve, simultaneously realizes the conveying of a flange plate through a flange plate conveying device, can realize the butt joint of the shaft sleeve and the flange plate at a welding position, realizes continuous welding and simultaneously reduces the occurrence of welding deviation.

In order to achieve the above purpose, the invention adopts the technical scheme that: a continuous welding mechanism of a shaft coupling structure comprises a frame, wherein a conveying groove matched with a shaft sleeve in a tangent mode is arranged in the middle of the frame, a feeding groove which is consistent with the moving direction of the conveying groove and is larger than the diameter of a shaft hole in a groove width mode is formed in the center of the conveying groove, a feeding movable device is arranged on the lower portion of the frame, feeding clamping devices which can match the shaft sleeve in the conveying groove and can lift and rotate are uniformly arranged on the feeding movable device, a flange conveying device is arranged on the upper surface of the conveying groove and comprises flange conveying seats arranged on the front side wall and the rear side wall of the conveying groove, each flange conveying seat is provided with a flange conveying block, the inner side of each flange conveying block is flush with the inner wall of the conveying groove, and the flange conveying blocks are connected with flange conveying transmission parts in the flange conveying seats, the ring flange transport transmission part cooperate with the ring flange transport motor that sets up in the frame, ring flange transport seat on still be provided with and transport a complex ring flange transport block with the ring flange, and the ring flange transport and offer on the block with ring flange complex ring flange cooperation nock, the top of frame be provided with the ring flange complex welding set who transports the piece in the block by the ring flange of interception.

Preferably, the feeding movable device comprises a feeding motor and a feeding screw rod which are arranged on the frame and matched with each other, the feeding screw rod is matched with a feeding movable block, the feeding movable block is provided with a feeding movable seat, the feeding clamping device comprises a feeding lifting cylinder arranged on the feeding movable seat, the feeding lifting cylinder is connected with a feeding lifting seat, the feeding lifting seat is provided with a feeding bearing seat, the feeding bearing seat is provided with a feeding rotating shaft and driven by a feeding rotating motor, the upper end of the feeding rotating shaft is provided with a feeding turntable, the feeding turntable is provided with a feeding clamp, and the shaft sleeve shaft axis clamped by the feeding clamp and the axis of the feeding rotating shaft are on the same vertical straight line.

Preferably, the feeding clamping device comprises a feeding clamping cylinder arranged on a feeding turntable, a clamping lower disc is arranged on the main body part of the feeding clamping cylinder, a clamping barrel is arranged on the clamping lower disc, a clamping upper disc is arranged on the upper part of the clamping barrel, clamping movable blocks capable of moving along the radial direction are uniformly arranged between the clamping upper disc and the clamping lower disc, the upper part of each clamping movable block penetrates into the clamping barrel and is connected with a clamping block penetrating out of the clamping barrel and matched with a shaft sleeve, an inclined block is arranged in the middle of each clamping movable block, a clamping lifting disc is connected to the upper part of the feeding clamping cylinder, and a clamping matching groove matched with the clamping movable blocks is formed in the clamping lifting disc.

Preferably, the upper end face and the lower end face of the clamping movable block are both provided with clamping movable grooves along the radial direction of the clamping lower disc, and the clamping lower disc and the clamping upper disc are provided with clamping movable columns matched with the clamping movable grooves.

Preferably, the welding device comprises a welding lifting assembly arranged on the rack, a welding lifting seat is connected below the welding lifting assembly, at least three welding heads are uniformly arranged below the welding lifting seat, the welding points of all the welding heads are on the same horizontal circle, and the diameter of the circle is matched with the inner diameter of the flange.

Preferably, the welding lifting assembly comprises a welding lifting motor arranged on the rack, the welding lifting motor is connected with a welding lifting rotating shaft, two ends of the welding lifting rotating shaft are meshed with two welding lifting screw rods arranged on the rack through bevel gears and matched with the two welding lifting screw rods, the welding lifting screw rods are sleeved and matched with a welding lifting sleeve, and the welding lifting sleeve is fixedly connected with a welding lifting seat.

Preferably, the center of welding lift seat be provided with screw rod centre gripping cover, the frame on be provided with screw rod centre gripping subassembly, screw rod centre gripping subassembly including setting up screw rod centre gripping elevator motor in the frame below, screw rod centre gripping elevator motor be connected with screw rod centre gripping lift pivot, the both ends of screw rod centre gripping lift pivot cooperate with two screw rod centre gripping lift lead screws of installing in the frame through bevel gear meshing, and two screw rod centre gripping lift lead screws all cup joint on screw rod centre gripping lift seat, screw rod reduce the price and go out the lift seat and be connected with the screw rod centre gripping connecting rod that penetrates screw rod centre gripping cover, screw rod centre gripping connecting rod be connected with screw rod centre gripping seat, screw rod centre gripping seat on be connected with two with screw rod complex screw rod grip blocks through two screw rod centre gripping cylinders.

Drawings

FIG. 1 is a schematic view of a continuous welding mechanism of a coupled structure;

FIG. 2 is a schematic front perspective view of the coupling arrangement;

FIG. 3 is an inverted perspective view of the coupling arrangement;

fig. 4 is a schematic perspective view of the flange plate conveying device;

FIG. 5 is a perspective view of the feed clamp;

FIG. 6 is a perspective view of the feed gripper;

FIG. 7 is a schematic view showing the engagement between the upper and lower clamping plates and the movable clamping block after the upper clamping plate is exploded and turned over;

FIG. 8 is a perspective view of a welder apparatus;

fig. 9 is a perspective view of the welding lifting assembly and the screw clamping assembly.

The text labels shown in the figures are represented as: 1. a frame; 2. a conveying trough; 3. a feed motor; 4. a feed screw rod; 5. feeding the movable block; 6. a feeding movable seat; 7. a feed clamping device; 8. a flange plate conveying device; 9. a welding device; 11. a shaft sleeve; 12. a screw; 13. a flange plate; 14. a shaft hole; 21. a flange plate conveying seat; 22. a flange plate conveying motor; 23. the flange plate conveys the transmission part; 24. a flange plate conveying block; 25. the flange plate is matched with the arc opening; 26. the flange plate conveys the interception block; 31. feeding a lifting cylinder; 32. a feed lifting seat; 33. a feeding bearing seat; 34. a feed rotary motor; 35. a feed turntable; 36. feeding a gripper; 37. feeding a clamping cylinder; 38. clamping the lower disc; 39. a clamping cylinder; 40. clamping the upper disc; 41. clamping the movable block; 42. a clamping block; 43. clamping the lifting disc; 44. a clamping fit groove; 45. clamping the movable column; 46. clamping the movable groove; 51. welding the lifting assembly; 52. welding a lifting seat; 53. welding a head; 54. a screw clamping sleeve; 55. a screw clamping assembly; 61. welding a lifting motor; 62. welding a lifting rotating shaft; 63. welding a lifting screw rod; 64. welding a lifting sleeve; 65. the screw clamps the lifting motor; 66. the screw clamps the lifting rotating shaft; 67. the screw rod clamps the lifting screw rod; 68. the screw clamps the lifting seat; 69. the screw rod clamps the connecting rod; 70. a screw clamping seat; 71. the screw rod clamps the air cylinder; 72. and the screw rod clamps the block.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 4, the specific structure of the present invention is: a continuous welding mechanism of a shaft coupling structure comprises a frame 1, wherein a conveying groove 2 matched with a shaft sleeve 11 in a tangent mode is arranged in the middle of the frame 1, a feeding groove which is consistent with the trend of the conveying groove 2 and has a groove width larger than the diameter of a shaft hole 14 is formed in the center of the conveying groove, a feeding movable device is arranged on the lower portion of the frame 1, feeding clamping devices 7 which can be matched with the shaft sleeve 11 in the conveying groove 2 and can realize lifting and rotating are uniformly arranged on the feeding movable device, a flange conveying device 8 is arranged on the upper surface of the conveying groove 2, the flange conveying device 8 comprises flange conveying seats 21 arranged on the front side wall and the rear side wall of the conveying groove 2, each flange conveying seat 21 is provided with a flange conveying block 24, the inner side of each flange conveying block 24 is flush with the inner wall of the conveying groove 2, and the flange conveying blocks 24 are connected with flange conveying transmission parts 23 in the flange conveying seats 21, the ring flange transport transmission part 23 cooperate with the ring flange transport motor 22 that sets up on the frame 1, ring flange transport seat 21 on still be provided with the ring flange transport block 24 complex ring flange transport block 26, and the ring flange transport block 24 on seted up with ring flange complex ring flange cooperation nock 25, the top of frame 1 be provided with the ring flange that is intercepted transport the ring flange 13 complex welding set 9 in the block 24.

When the welding device is used specifically, the shaft sleeve 11 is firstly placed into the conveying groove 2, then the flange plate 13 is placed into the flange matching arc opening 25, the flange plate conveying motor 22 drives the flange plate conveying transmission part 23 to further drive the flange plate conveying block 24 to feed until the flange plate feeding block 24 is intercepted by the flange plate intercepting block 26, the flange plate 13 is positioned at the position in butt joint with the welding device 9 at the moment, the shaft sleeve 11 is clamped by the feeding clamping device 7, then the flange plate is fed to the position below the flange plate 13 under the action of the feeding moving device, then the shaft sleeve 11 is driven by the feeding clamping device 7 to ascend, so that the shaft sleeve 11 and the flange plate 13 are in butt joint, then the welding device 9 is matched with the feeding clamping device to rotate to complete welding, then the shaft sleeve 11 is driven by the feeding clamping device 7 to ascend continuously, so that the flange plate 13 exceeds the flange plate conveying block 24, further, the flange plate conveying block 24 can be restored, and meanwhile, a welded product cannot be influenced, simultaneously through the end that the conveyer trough was carried to the product that the feeding movable device will weld, later make the feeding movable device reset, so realized continuous coupling structure's welding process, improved work efficiency, and can ensure that at the pivoted in-process, the skew can not appear in the ring flange, and then can ensure accurate welding effect.

As shown in fig. 1 and 5, the feeding movable device includes a feeding motor 3 and a feeding screw rod 4 which are arranged on a frame 1 and matched with each other, the feeding screw rod 4 is matched with a feeding movable block 5, the feeding movable block 5 is provided with a feeding movable seat 6, the feeding clamping device 7 includes a feeding lifting cylinder 31 arranged on the feeding movable seat 6, the feeding lifting cylinder 31 is connected with a feeding lifting seat 32, the feeding lifting seat 32 is provided with a feeding bearing seat 33, the feeding bearing seat 33 is provided with a feeding rotating shaft and is driven by a feeding rotating motor 34, the upper end of the feeding rotating shaft is provided with a feeding turntable 35, the feeding turntable 35 is provided with a feeding clamper 36, and the axis of a shaft sleeve 11 clamped by the feeding clamper 36 and the axis of the feeding rotating shaft are on the same vertical straight line.

The feeding movable device adopts the feeding motor 3 to drive the feeding screw rod 4 to rotate, and then drives the feeding movable block 5 and the feeding movable seat 6 to move so as to realize feeding, the feeding amplitude can be controlled through the number of turns of the feeding motor 3, the accurate position butt joint of the shaft sleeve and the flange plate can be realized, and the feeding clamp holder 36 of the feeding clamping device can ensure that the clamped shaft sleeve 11 and the axis of the feeding rotating shaft are on the same vertical straight line, so that the process of deviation from the rotating center cannot occur between the flange plate and the shaft sleeve in the welding process, and the accurate performance of welding is further ensured.

As shown in fig. 6-7, the feeding clamp 36 includes a feeding clamping cylinder 37 disposed on the feeding turntable 35, a clamping lower plate 38 is disposed on a main body portion of the feeding clamping cylinder 37, a clamping cylinder 39 is disposed on the clamping lower plate 38, an upper clamping plate 40 is disposed on an upper portion of the clamping cylinder 39, clamping movable blocks 41 capable of moving in a radial direction are uniformly disposed between the upper clamping plate 40 and the clamping lower plate 38, an upper portion of each clamping movable block 41 penetrates into the clamping cylinder 39 and is connected to a clamping block 42 penetrating through the clamping cylinder 39 and engaged with the shaft sleeve 11, a middle portion of each clamping movable block 41 is an inclined block, a clamping lifting plate 43 is connected to an upper portion of the feeding clamping cylinder 37, and a clamping engaging groove 44 engaged with the clamping movable block 41 is disposed on the clamping lifting plate 43.

The feeding clamper 36 is specifically operated as follows, firstly, the clamping matching groove 44 on the clamping lifting disk 43 is matched with the inclined part of the clamping movable block 41, the clamping movable block 44 is ensured to be at the position closest to the center, namely, the clamping blocks 42 are all in a tightening state, when all the clamping blocks 42 are inserted into the shaft hole 14, the clamping lifting cylinder 37 drives the clamping lifting disk 43 to move, the matching position of the clamping matching groove 44 and the inclined part of the clamping movable block 41 is changed, further, the clamping movable block 44 moves outwards, further, all the clamping blocks are opened outwards, and the shaft sleeve is clamped.

As shown in fig. 7, the upper end surface and the lower end surface of the clamping movable block 41 are both provided with clamping movable grooves 46 along the radial direction of the clamping lower disc 38, and the clamping lower disc 38 and the clamping upper disc 40 are provided with clamping movable columns 45 matched with the clamping movable grooves 46.

During the movement of the clamping movable block 41, the clamping movable column 45 is always located in the clamping movable groove 46, so that the movement track of the clamping movable block 41 is ensured not to change along the radial direction.

As shown in fig. 1 and 8, the welding device 9 includes a welding lifting assembly 51 disposed on the frame 1, a welding lifting seat 52 is connected below the welding lifting assembly, at least three welding heads 53 are uniformly mounted below the welding lifting seat 52, and the welding points of all the welding heads 53 are on the same horizontal circle, and the diameter of the circle matches with the inner diameter of the flange 13.

The specific operation of the welding device is as follows: firstly, the welding lifting assembly 51 drives the welding lifting seat 52 to descend, then the welding head 53 descends to the position contacting with the flange plate 13 and the shaft sleeve 11, then the welding head 53 is started to start welding, the design of no less than three groups of welding heads 53 can enable the flange plate to rotate along with the shaft sleeve in an initial state, and the omnibearing welding is realized.

As shown in fig. 9, the welding lifting assembly 51 includes a welding lifting motor 61 disposed on the frame 1, the welding lifting motor 61 is connected to a welding lifting rotating shaft 62, two ends of the welding lifting rotating shaft 62 are engaged with two welding lifting screws 63 mounted on the frame 1 through bevel gears, the welding lifting screws 63 are engaged with a welding lifting sleeve 64, and the welding lifting sleeve 64 is fixedly connected to the welding lifting base 52.

The concrete operation of welding lifting unit is as follows, drives welding lift pivot 62 through welding elevator motor 61 earlier and rotates, and then drives welding lift lead screw 63 through bevel gear and rotate, so can drive the lift of welding lift seat 52, adopts two welding lift lead screws 63, can ensure the steady lift of welding lift seat, can not take place the slope.

As shown in fig. 8-9, the center of the welding lifting seat 52 is provided with a screw clamping sleeve 54, the frame 1 is provided with a screw clamping component 55, the screw clamping component 55 comprises a screw clamping lifting motor 65 arranged below the frame 1, the screw clamping lifting motor 65 is connected with a screw clamping lifting rotating shaft 66, two ends of the screw clamping lifting rotating shaft 66 are engaged with two screw clamping lifting screw rods 67 arranged on the frame 1 through bevel gears, and the two screw clamping lifting screws 67 are sleeved on the screw clamping lifting seat 68, the screw price reduction lifting seat 68 is connected with a screw clamping connecting rod 69 penetrating into the screw clamping sleeve 54, the screw clamping connecting rod 69 is connected with a screw clamping seat 70, and the screw clamping seat 70 is connected with two screw clamping blocks 72 matched with the screw 12 through two screw clamping cylinders 71.

Before welding (i.e., when the sleeve is inserted into the flange while being raised), the shaft is lowered by the raising and lowering portion of the screw clamp assembly 55 (which operates in unison with the welding raising and lowering portion), so that the lower part of the screw clamping seat 70 presses the flange 13 to ensure that the flange is not pushed in the process of butting with the shaft sleeve, and simultaneously, in the ascending process of the shaft sleeve, the screw rod part firstly penetrates out of the flange plate 13, and then the screw rod clamping blocks 72 can be driven by the two screw rod clamping cylinders 71 to synchronously move, a plurality of screw rods are used for clamping, if the screw is not in correct position (i.e., the feed position of the sleeve is misaligned), the two screw clamping blocks 72 may not be able to clamp the screw synchronously, feedback may be provided by way of a contact sensor, and then the position of axle sleeve needs to be adjusted to carry out the troubleshooting to equipment, the design of this structure can ensure the accurate butt joint of ring flange and axle sleeve part.

When the intelligent control device is used specifically, a control system can be equipped for controlling the cooperative work of all the power parts, and the integral operation can be realized through the control buttons of all the power parts.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principle and embodiments of the present invention have been described herein by way of specific examples, which are provided only to help understand the method and the core idea of the present invention, and the above is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can also be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims (7)

1. A continuous welding mechanism of a shaft coupling structure comprises a rack (1), wherein a conveying groove (2) which is in tangent fit with a shaft sleeve (11) is arranged in the middle of the rack (1), and the continuous welding mechanism is characterized in that a feeding groove which is consistent with the trend of the conveying groove (2) and has a groove width larger than the diameter of a shaft hole (14) is formed in the center of the conveying groove, a feeding movable device is arranged at the lower part of the rack (1), a feeding clamping device (7) which can be matched with the shaft sleeve (11) in the conveying groove (2) and can be lifted and rotated is uniformly arranged on the feeding movable device, a flange conveying device (8) is arranged on the upper surface of the conveying groove (2), the flange conveying device (8) comprises flange conveying seats (21) arranged on the front side wall and the rear side wall of the conveying groove (2), and each flange conveying seat (21) is provided with a flange conveying block (24), and the ring flange transports the inboard of piece (24) and the inner wall parallel and level of conveyer trough (2), the ring flange transport piece (24) and ring flange in the ring flange transport seat (21) and carry driving medium (23) to be connected, ring flange transport driving medium (23) and frame (1) on ring flange conveyor motor (22) the cooperation that sets up, ring flange transport seat (21) on still be provided with and transport piece (24) complex ring flange transport and block piece (26) with the ring flange, and the ring flange transport and offer on piece (24) with ring flange complex ring flange cooperation nock (25), the top of frame (1) be provided with the ring flange of being intercepted transport ring flange (13) complex welding set (9) in piece (24).

2. The continuous welding mechanism of a shaft coupling structure according to claim 1, characterized in that the feeding movable device comprises a feeding motor (3) and a feeding screw rod (4) which are arranged on the frame (1) and matched with each other, the feeding screw rod (4) is matched with a feeding movable block (5), a feeding movable seat (6) is arranged on the feeding movable block (5), the feeding clamping device (7) comprises a feeding lifting cylinder (31) arranged on the feeding movable seat (6), the feeding lifting cylinder (31) is connected with a feeding lifting seat (32), the feeding lifting seat (32) is provided with a feeding bearing seat (33), the feeding bearing seat (33) is provided with a feeding rotating shaft and is driven by a feeding rotating motor (34), the upper end of the feeding rotating shaft is provided with a feeding turntable (35), the feeding turntable (35) is provided with a feeding clamp holder (36), and the axis of the shaft sleeve (11) clamped by the feeding clamp holder (36) and the axis of the feeding rotating shaft are on the same vertical straight line.

3. The continuous welding mechanism of a shaft coupling structure according to claim 2, characterized in that the feeding clamper (36) comprises a feeding clamping cylinder (37) arranged on a feeding turntable (35), a clamping lower disc (38) is arranged on the main body part of the feeding clamping cylinder (37), a clamping cylinder (39) is arranged on the clamping lower disc (38), an upper clamping disc (40) is arranged on the upper part of the clamping cylinder (39), clamping movable blocks (41) capable of moving along the radial direction are uniformly arranged between the upper clamping disc (40) and the clamping lower disc (38), the upper part of each clamping movable block (41) penetrates into the clamping cylinder (39) and is connected with a clamping block (42) which penetrates through the clamping cylinder (39) and is matched with the shaft sleeve (11), an inclined block is arranged in the middle part of each clamping movable block (41), and a clamping lifting disc (43) is connected on the upper part of the feeding clamping cylinder (37), and a clamping matching groove (44) matched with the clamping movable block (41) is formed in the clamping lifting disc (43).

4. The continuous welding mechanism of a shaft coupling structure according to claim 3, characterized in that the upper end face and the lower end face of the clamping movable block (41) are both provided with clamping movable grooves (46) along the radial direction of the clamping lower disc (38), and the clamping lower disc (38) and the clamping upper disc (40) are provided with clamping movable columns (45) matched with the clamping movable grooves (46).

5. A continuous welding mechanism for a coupled structure according to claim 1, characterized in that said welding device (9) comprises a welding lifting assembly (51) disposed on the frame (1), a welding lifting seat (52) is connected below said welding lifting assembly, at least three sets of welding heads (53) are uniformly installed below said welding lifting seat (52), and the welding points of all welding heads (53) are on the same horizontal circle, and the diameter of the circle matches with the inner diameter of the flange (13).

6. The continuous welding mechanism of a shaft coupling structure according to claim 5, characterized in that the welding lifting assembly (51) comprises a welding lifting motor (61) arranged on the frame (1), the welding lifting motor (61) is connected with a welding lifting rotating shaft (62), two ends of the welding lifting rotating shaft (62) are engaged with two welding lifting screw rods (63) arranged on the frame (1) through bevel gears, the welding lifting screw rods (63) are sleeved and engaged with a welding lifting sleeve (64), and the welding lifting sleeve (64) is fixedly connected with the welding lifting seat (52).

7. The continuous welding mechanism of a shaft coupling structure according to claim 5, characterized in that a screw clamping sleeve (54) is arranged at the center of the welding lifting seat (52), a screw clamping assembly (55) is arranged on the frame (1), the screw clamping assembly (55) comprises a screw clamping lifting motor (65) arranged below the frame (1), the screw clamping lifting motor (65) is connected with a screw clamping lifting rotating shaft (66), two ends of the screw clamping lifting rotating shaft (66) are engaged with two screw clamping lifting screws (67) arranged on the frame (1) through bevel gears, the two screw clamping lifting screws (67) are sleeved on the screw clamping lifting seat (68), the screw price reducing lifting seat (68) is connected with a screw clamping connecting rod (69) penetrating into the screw clamping sleeve (54), the screw clamping device is characterized in that the screw clamping connecting rod (69) is connected with a screw clamping seat (70), and the screw clamping seat (70) is connected with two screw clamping blocks (72) matched with the screw (12) through two screw clamping cylinders (71).

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