CN215393093U

CN215393093U - Automatic submerged arc welding device for steering shaft

Info

Publication number: CN215393093U
Application number: CN202121840391.XU
Authority: CN
Inventors: 王虎; 华国祥; 瞿国仁
Original assignee: Hangzhou Linda Auto Fittings Co ltd
Current assignee: Hangzhou Linda Auto Fittings Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-01-04
Anticipated expiration: 2031-08-06

Abstract

The utility model belongs to the technical field of steering spindle production facility's technique and specifically relates to an automatic submerged arc welding device for steering spindle is related to, and it includes the workstation, be equipped with the frame on the workstation, be provided with the organism of submerged arc welding machine in the frame, be equipped with first mount pad and second mount pad on the workstation, first mount pad with the second mount pad sets up relatively, and just first mount pad all rotates with the relative one side of second mount pad and is connected with the rotation seat, rotate the seat and be located the below of organism, two the rotation axis collineation of rotating the seat, be provided with the centre gripping subassembly that is used for the centre gripping object on the rotation seat, be provided with the synchronizing assembly who is used for driving two rotation seat synchronous revolution a week on the workstation. The application can improve the welding quality.

Description

Automatic submerged arc welding device for steering shaft

Technical Field

The application relates to the technical field of steering shaft production equipment, in particular to an automatic submerged arc welding device for a steering shaft.

Background

The steering shaft is a transmission part which transmits steering torque of a driver acting on the steering wheel to the steering gear, the upper end of the steering shaft is fixedly connected with the steering wheel, and the lower part of the steering shaft is fixedly connected with the steering gear. In the welding process of some steering shafts, a submerged arc welding machine is needed to weld parts on one end of the steering shaft, the submerged arc welding is a welding mode of utilizing electric arc to burn under a welding flux layer for welding, and the submerged arc welding has the advantages of stable welding quality, high welding productivity, no arc light, less smoke dust and the like.

In the related technology of the submerged arc welding machine, the submerged arc welding machine comprises a workbench, a rack is arranged on the workbench, a machine body of the submerged arc welding machine is arranged on the rack, the machine body comprises a welding gun, a wire feeding assembly for conveying welding wires to the welding gun and a feeding assembly for pouring welding flux towards the welded part, and a placing plate for placing a steering shaft and parts is arranged on the workbench.

When the workman welds the steering spindle, the workman places steering spindle and spare part on placing the board, align the laminating with steering spindle and spare part, align the organism with the laminating department of steering spindle and spare part again, the workman starts the pay-off subassembly and delivers to the laminating department of steering spindle and spare part with the solder flux, restart and send a subassembly to deliver to welder department with the welding wire, make the welding wire align the solder flux, the workman starts welder and welds steering spindle and spare part laminating department, the workman drives steering spindle and spare part synchronous revolution a week again, accomplish the welding step.

However, in the process of machining the steering shaft by the existing submerged arc welding machine, a worker needs to manually rotate the steering shaft and parts to keep the steering shaft and the parts synchronously rotating, so that the stability is poor, and the situation of poor welding quality is easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to improve the welding quality, the application provides an automatic submerged arc welding device for a steering shaft.

The application provides an automatic submerged arc welding device for steering spindle adopts following technical scheme: the utility model provides an automatic submerged arc welding device for steering spindle, includes the workstation, be equipped with the frame on the workstation, be provided with the organism of submerged arc welding machine in the frame, be equipped with first mount pad and second mount pad on the workstation, first mount pad with the second mount pad sets up relatively, and first mount pad all rotates with the relative one side of second mount pad and is connected with the rotation seat, rotate the seat and be located the below of organism, two rotate the rotation axis collineation of seat, it is provided with the centre gripping subassembly that is used for the centre gripping object to rotate the seat, be provided with the synchronizing assembly who is used for driving two rotation seats synchronous rotation a week on the workstation.

Through adopting above-mentioned technical scheme, when the workman need process the steering spindle, the workman laminates the one end and the spare part of steering spindle, the workman is starting two centre gripping subassemblies and is rotating the seat with the steering spindle centre gripping on first mount pad, with the rotation seat of spare part centre gripping on the second mount pad, the workman starts synchronous subassembly, drive axis of rotation and spare part synchronous rotation a week, simultaneously, the workman starts the organism and welds steering spindle and spare part laminating department, the manual rotatory steering spindle welded step of workman has been reduced, the welded stability has been improved, thereby welding quality has been improved.

Optionally, the clamping assembly includes at least two first electric cylinders, all the first electric cylinders are circumferentially arranged around the axis of the rotating seat as a circle center, the telescopic rod of the first electric cylinder extends along the radial direction of the rotating seat, and the telescopic rod of the first electric cylinder is provided with a clamping portion.

Through adopting above-mentioned technical scheme, when the workman need use the centre gripping subassembly, the workman aims at the axis of rotating the seat with the axis of steering spindle, restarts all first electric jar, and the telescopic link of all first electric jars drives the clamping part that corresponds and supports tightly jointly in the lateral wall of steering spindle with the steering spindle centre gripping.

Optionally, the synchronizing assembly comprises two first gears and two first gears which are coaxially arranged with the two rotating seats respectively, the first mounting seat and the second mounting seat are connected with second gears in a rotating mode, the second gears are in one-to-one correspondence with the first gears and meshed with the first gears, a synchronizing rod is arranged between the two second gears, two ends of the synchronizing rod are connected with the two second gears respectively, a second electric cylinder is arranged on the workbench, a synchronizing rack axially extending along a telescopic rod of the second electric cylinder is arranged on a telescopic rod of the second electric cylinder, and the synchronizing rack is meshed with the second gears corresponding to the second mounting seats.

Through adopting above-mentioned technical scheme, when the workman need rotate steering spindle and spare part, the workman starts the second electric jar, and the telescopic link of second electric jar promotes synchronous rack and removes, and synchronous rack and the second gear meshing that corresponds carries out synchronous rotation through the synchronizing bar between two second gears, and the second gear meshes with first gear to make two rotate the synchronous rotations of seat, thereby realize the synchronous revolution of steering spindle and spare part.

Optionally, the synchronizing bar includes a plug connector and a plug tube, the plug connector and the plug tube are respectively connected to the two second gears, the plug connector is slidably plugged in the plug tube, the first mounting seat is slidably connected to the workbench, and the sliding direction of the first mounting seat is the same as the arrangement direction of the first mounting seat and the second mounting seat.

Through adopting above-mentioned technical scheme, when the length direction of steering spindle changed, the workman promoted first mount pad and slided on the workstation, and simultaneously, the plug connector removed along the direction of sliding of first mount pad in a grafting section of thick bamboo for two second gears keep synchronous rotation, stop after the interval of first mount pad and second mount pad is applicable to steering spindle and spare part processing, are applicable to the steering spindle of processing different length.

Optionally, the connector clip is provided with a limiting block, the insertion barrel is provided with a limiting groove for the limiting block to slide and be embedded, and the limiting groove extends along the sliding direction of the first mounting seat.

Through adopting above-mentioned technical scheme, when the plug connector slides in a grafting section of thick bamboo, the stopper slides in the spacing groove, and when the plug connector was rotatory, the plug connector drove the stopper rotatory, and the stopper is contradicted in the cell wall of spacing groove to make plug connector and a grafting section of thick bamboo synchronous revolution, reduced the condition that the relative rotation takes place for plug connector and a grafting section of thick bamboo.

Optionally, be provided with the removal subassembly that is used for driving first mount pad and removes on the workstation, the removal subassembly includes the lead screw, the axial of lead screw with the direction of sliding of first mount pad is the same, the lead screw rotates to be connected in the workstation, lead screw and first mount pad threaded connection, be equipped with the rotatory driving piece of drive lead screw around its self axis on the workstation.

Through adopting above-mentioned technical scheme, when the workman need remove first mount pad, the workman starts the driving piece, and the driving piece drives the lead screw and rotates around its self axis, lead screw and first mount pad threaded connection to drive the axial displacement of first mount pad along the lead screw, made things convenient for the workman to remove first mount pad.

Optionally, a material receiving box for collecting the welding flux is arranged on the workbench, the material receiving box is located between the first mounting seat and the second mounting seat, and the material receiving box is located below the rotating seat.

Through adopting above-mentioned technical scheme, when the workman processed the steering spindle, along with the rotation of steering spindle, the welding machine that does not use up on the steering spindle drops to in the material collecting box to made things convenient for the workman to carry out recycle to the solder flux.

Optionally, the material receiving box is provided with a contact plate for contacting the joint of the steering shaft and the part, and the contact plate is located below the rotating seat.

Through adopting above-mentioned technical scheme, when the steering spindle was rotatory, the conflict board was contradicted in steering spindle and spare part laminating department, and the conflict board scrapes the adnexed solder flux of steering spindle in to the material collecting box simultaneously, has further made things convenient for the workman to carry out recycle to the solder flux.

To sum up, the application comprises the following beneficial technical effects:

1. through the arrangement of the workbench, the rack, the machine body, the first mounting seat, the second mounting seat, the rotating seat, the clamping assembly and the synchronizing assembly, the step of welding by manually rotating the steering shaft by workers is reduced, the welding stability is improved, and the welding quality is improved;

2. through the arrangement of the moving assembly, workers can conveniently adjust the distance between the first mounting seat and the second mounting seat, and the device is suitable for processing steering shafts with different lengths;

3. through the arrangement of the limiting block and the limiting groove, the synchronous rotation of the two second gears is ensured while the synchronous rod stretches;

4. through the setting of collecting box and touch panel, made things convenient for the workman to carry out recycle to the solder flux.

Drawings

FIG. 1 is a schematic diagram of the overall structure in the embodiment of the present application;

FIG. 2 is a schematic structural diagram of a hidden frame and a hidden machine body used for showing a synchronizing assembly, a clamping assembly, a first mounting seat and a second mounting seat in the embodiment of the application;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present application showing a moving assembly;

fig. 4 is a schematic cross-sectional structure diagram for showing a synchronizing bar in the embodiment of the present application.

Reference numerals: 1. a work table; 11. a frame; 12. a body; 13. a feeding assembly; 14. a welding gun; 15. a wire feed assembly; 2. a first mounting seat; 21. a slider; 22. a sliding groove; 3. a second mounting seat; 4. a rotating seat; 5. a clamping assembly; 51. a first electric cylinder; 52. a clamping portion; 6. a synchronization component; 61. a first gear; 62. a second gear; 63. a second electric cylinder; 64. a synchronous rack; 65. a synchronization lever; 651. a plug-in unit; 652. a plug-in barrel; 653. a limiting block; 654. a limiting groove; 7. a moving assembly; 71. a screw rod; 72. a motor; 8. a material receiving groove; 81. a material receiving box; 82. against the plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an automatic submerged arc welding device for a steering shaft. As shown in figure 1, the automatic submerged arc welding device for the steering shaft comprises a workbench 1, wherein a frame 11 is fixedly connected to the upper surface of the workbench 1. A machine body 12 of the submerged arc welding machine is fixedly connected to the frame 11, and the machine body 12 comprises a feeding assembly 13, a welding gun 14 and a wire feeding assembly 15, wherein the feeding assembly 13 is used for pouring welding flux towards a welded part, the welding gun 14 is used for welding, and the wire feeding assembly 15 is used for feeding welding wires to the welding gun 14, and the feeding assembly is sequentially arranged along the horizontal direction. The first installation seat 2 and the second installation seat 3 are sequentially arranged on the workbench 1 along the horizontal direction, and the arrangement direction of the first installation seat 2 and the second installation seat 3 is perpendicular to the arrangement direction of the feeding assembly 13, the welding gun 14 and the wire feeding assembly 15.

As shown in fig. 1 and 2, the opposite sides of the first mounting seat 2 and the second mounting seat 3 are rotatably connected with a rotating seat 4, the axes of the two rotating seats 4 are collinear, the rotating seat 4 is located below the welding gun 14, the opposite sides of the two rotating seats 4 are provided with clamping assemblies 5, and the workbench 1 is provided with a synchronizing assembly 6 for rotating the two rotating seats 4.

When a worker needs to weld the steering shaft, the worker starts the clamping assembly 5 on the first mounting seat 2 to clamp one end of the steering shaft, then starts the clamping assembly 5 on the second mounting seat 3 to clamp the part, and at the moment, the joint welding position of the steering shaft and the part is located right below the welding gun 14 and the feeding assembly 13.

The worker restarts the machine body 12, the feeding assembly 13 inverts the welding machine at the welding position of the steering shaft, the welding gun 14 is restarted to weld the position where the welding machine is placed, and the wire feeding assembly 15 continuously feeds the welding wire to the welding gun 14.

The workman starts synchronizing assembly 6 for two rotate seat 4 synchronous revolution, two rotate seat 4 and drive steering spindle and spare part and revolve the axis rotation a week that rotates seat 4, along with two rotations seat 4's rotations, the steering spindle drives just to invert and welds towards welder 14 department rotation on the steering spindle, thereby accomplishes the welding of steering spindle.

Because the clamping and rotating steps in the machining process of the steering shaft reduce manual participation, the step of welding the steering shaft by manually rotating a worker is reduced, the stability of the steering shaft in the machining process is improved, and the welding quality is further improved.

As shown in fig. 1 and fig. 2, the clamping assembly 5 includes a plurality of first electric cylinders 51, the number of the first electric cylinders 51 is not less than two, the number of the first electric cylinders 51 in the same clamping assembly 5 is preferably three in this embodiment, the first electric cylinders 51 are circumferentially arranged around the axis of the rotating base 4 as the circle center, the telescopic rods of the first electric cylinders 51 extend along the radial direction of the rotating base 4, one end of the telescopic rods of the first electric cylinders 51, which is far away from the first electric cylinders 51, is fixedly connected with clamping portions 52, the clamping portions 52 are made of rubber material in this embodiment, the clamping effect of the telescopic rods of the first electric cylinders 51 on the steering shaft and the parts is improved, and the friction force is improved.

When a worker clamps the steering shaft, the worker starts all the first electric cylinders 51 corresponding to the first mounting seats 2, and the telescopic rods of the first electric cylinders 51 push the clamping parts 52 to abut against the side walls of the steering shaft, so that the clamping of the steering shaft is completed. When the workman starts synchronizing assembly 6, steering spindle and spare part are difficult for all forming relative rotation with rotating seat 4, have improved welding quality.

As shown in fig. 1 and 2, the synchronizing assembly 6 includes two first gears 61, two second gears 62, one second electric cylinder 63, one synchronizing rack 64 and one synchronizing rod 65, the two first gears 61 are respectively and rotatably connected to the two side walls of the rotating base 4, the axis of the first gear 61 is collinear with the axis of the rotating base 4, the two second gears 62 are respectively and rotatably connected to the first mounting base 2 and the second mounting base 3, the second gears 62 are in one-to-one correspondence with the first gears 61, the second gears 62 are meshed with the corresponding first gears 61, and the axes of the two second gears 62 are collinear.

Two ends of the synchronous rod 65 are fixedly connected to the opposite sides of the two second gears 62 respectively, and the axis of the synchronous rod 65 is collinear with the axis of the second gears 62.

The second electric cylinder 63 is fixedly connected to the second mounting base 3, the extension direction of the extension rod of the second electric cylinder 63 is horizontally arranged, and the axial direction of the extension rod of the second electric cylinder 63 is perpendicular to the axial direction of the second gear 62.

The extending direction of the synchronous rack 64 is the same as the axial direction of the telescopic rod of the second electric cylinder 63, the synchronous rack 64 is fixedly connected to the telescopic rod of the second lever, and the synchronous rack 64 is meshed with the second gear 62 on the second mounting seat 3.

When a worker needs to rotate the rotating seat 4, the worker starts the second electric cylinder 63, the telescopic rod of the second electric cylinder 63 pushes the synchronous rack 64 to extend along the axial direction of the telescopic rod of the second electric cylinder 63, the synchronous rack 64 drives the corresponding second gear 62 to rotate, the synchronous rod 65 enables the two second gears 62 to rotate synchronously, and the second gear 62 is meshed with the corresponding first gear 61, so that the two rotating seats 4 rotate synchronously, the telescopic speed of the telescopic rod of the second electric cylinder 63 is controlled along with the worker, the rotation speed adjustment of the two rotating seats 4 is realized, the stability is improved, and the welding quality is further improved.

Meanwhile, the power line of the first electric cylinder 51 is not easy to be excessively wound.

As shown in fig. 2 and 3, the second mounting seat 3 is fixedly connected to the upper surface of the workbench 1, the bottom of the first mounting seat 2 is fixedly connected with a sliding block 21, the upper surface of the workbench 1 is provided with a sliding groove 22 extending along the horizontal direction, the extending direction of the sliding groove 22 is parallel to the arrangement direction of the first mounting seat 2 and the second mounting seat 3, the sliding block 21 is embedded in the sliding groove 22 in a sliding manner, and the workbench 1 is provided with a moving component 7 for pushing the sliding block 21 to move in the sliding groove 22.

When the lengths of the steering shafts are different, a worker starts the moving assembly 7 and adjusts the distance between the first mounting seat 2 and the second mounting seat 3, so that the steering shafts and the part machining positions are always kept right below the welding gun 14 under the condition that the lengths of the steering shafts are different, and the worker can conveniently machine the steering shafts with different lengths and sizes.

As shown in fig. 4, the synchronization rod 65 includes a plug 651 and a plug cylinder 652, the plug 651 is slidably plugged into the plug cylinder 652, a sliding direction of the plug 651 is the same as an axial direction of the second gear 62, a limit block 653 is fixedly connected to a side wall of the plug 651, the limit block 653 extends along a length direction of the plug 651, and a limit groove 654 extending along the length direction is formed on an inner wall of the plug cylinder 652.

As shown in fig. 2 and 4, when the sliding block 21 drives the first mounting base 2 to move, the second gear 62 on the first mounting base 2 moves along the axial direction of the plug element 651, the plug element 651 slides in the plug cylinder 652, and the limit block 653 slides in the limit groove 654. When the second gear 62 rotates, the limiting block 653 is inserted into the limiting groove 654, and the limiting block 653 abuts against the groove wall of the limiting groove 654, so that the connector 651 and the connecting cylinder 652 rotate around the axis of the connecting cylinder 652 synchronously, and the two second gears 62 rotate synchronously.

As shown in fig. 2 and 3, the moving assembly 7 includes a screw rod 71 and a driving member, preferably a motor 72 in this embodiment, the axial direction of the screw rod 71 is the same as the extending direction of the sliding groove 22, the screw rod 71 is rotatably connected to the groove wall of the sliding groove 22, the screw rod 71 is in threaded connection with the sliding block 21, the motor 72 is fixedly connected to the working table 1, and the output shaft of the motor 72 is coaxially and fixedly connected with the screw rod 71.

When a worker needs to push the first mounting seat 2, the worker starts the motor 72, an output shaft of the motor 72 drives the screw rod 71 to rotate around an axis of the screw rod 71, the screw rod 71 is in threaded connection with the sliding block 21, the sliding block 21 is embedded in the sliding groove 22 in a sliding mode, so that the sliding block 21 slides in the sliding groove 22, the sliding block 21 drives the first mounting seat 2 to move along the extending direction of the sliding groove 22, and the worker can conveniently adjust the position of the first mounting seat 2.

As shown in fig. 1 and 2, a material receiving groove 8 is formed in the workbench 1, a material receiving box 81 with an upward opening is inserted in the material receiving groove 8 in a sliding mode, the material receiving box 81 is located under the welding gun 14, when the welding machine is inverted on the side wall of the steering shaft by the feeding assembly 13, part of welding drops in the material receiving box 81 along with rotation of the steering shaft, and therefore the welding flux is convenient for workers to recycle.

As shown in fig. 1 and fig. 2, fixedly connected with touch panel 82 on the inner wall of material receiving box 81, touch panel 82 is the slope setting, touch panel 82's the lower extreme fixed connection in material receiving box 81's inner wall, the most extreme of touch panel 82 is outstanding in the opening of material receiving box 81 and is contradicted in the lateral wall of steering spindle lateral wall and spare part, touch panel 82's material is elastic material in this embodiment, reduce the damage to the steering spindle lateral wall, simultaneously, along with the rotation of steering spindle, the solder flux on the steering spindle lateral wall passes through welder 14 and touch panel 82 in proper order, touch panel 82 scrapes the adnexed solder flux on the steering spindle lateral wall to in the material receiving box 81 this moment, thereby realized the recycle of solder.

The implementation principle of the automatic submerged arc welding device for the steering shaft in the embodiment of the application is as follows: when a worker needs to weld the steering shaft and the parts, firstly, the worker starts the motor 72, an output shaft of the motor 72 drives the screw rod 71 to rotate around the axis of the screw rod 71, the screw rod 71 is in threaded connection with the sliding block 21, the sliding block 21 slides in the sliding groove 22, the sliding block 21 drives the first mounting seat 2 to move, the first mounting seat 2 drives the corresponding rotating seat 4 and the second gear 62 to move, at the moment, the plug connector 651 slides in the plug-in cylinder 652, and the limiting block 653 is in the limiting groove 654 until the distance between the first mounting seat 2 and the second mounting seat 3 is determined.

Then, the worker corresponds the steering shaft to the rotating seat 4 on the first mounting seat 2, starts all the first electric cylinders 51 corresponding to the first mounting seat 2, the telescopic rods of the second electric cylinders 63 drive the clamping portions 52 to abut against the side walls of the steering shaft, so that the steering shaft is clamped, and the worker starts all the first electric cylinders 51 on the second mounting seat 3 to clamp the parts on the rotating seat 4 corresponding to the second mounting seat 3.

Then, the worker starts the feeding assembly 13 to invert the welding flux at the joint of the steering shaft and the part, the worker starts the second electric cylinder 63, the telescopic rod of the second electric cylinder 63 pushes the synchronous gear to move, the synchronous gear drives the second gear 62 to rotate, the limiting block 653 abuts against the groove wall of the limiting groove 654, the plug connector 651 and the plug connector cylinder 652 rotate synchronously, so that the two second gears 62 rotate, the second gear 62 rotates with the first gear 61, so that the two steering seats rotate synchronously for one circle, at this time, the steering shaft drives the welding flux to rotate towards the welding gun 14, and the worker starts the welding gun 14 to weld the steering shaft and the part.

According to the actions, the welding of the steering shaft and the part in a circle is realized, the steps of manually rotating the steering shaft by workers for welding are reduced, and the welding quality is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automatic submerged arc welding set for steering spindle, includes workstation (1), be equipped with frame (11) on workstation (1), be provided with organism (12) of submerged arc welding machine on frame (11), its characterized in that: be equipped with first mount pad (2) and second mount pad (3) on workstation (1), first mount pad (2) with second mount pad (3) sets up relatively, and first mount pad (2) all rotates with the relative one side of second mount pad (3) and is connected with rotation seat (4), it is located to rotate seat (4) the below of organism (12), two rotate the rotation axis collineation of seat (4), be provided with centre gripping subassembly (5) that are used for the centre gripping object on rotating seat (4), be provided with on workstation (1) and be used for driving two synchronous rotation seat (4) synchronous rotation a week synchronizing assembly (6).

2. An automatic submerged arc welding apparatus for a steering shaft according to claim 1, characterized in that: the clamping assembly (5) comprises at least two first electric cylinders (51), all the first electric cylinders (51) are circumferentially arranged around the axis of the rotating seat (4) as the circle center, the telescopic rods of the first electric cylinders (51) radially extend along the rotating seat (4), and the telescopic rods of the first electric cylinders (51) are provided with clamping parts (52).

3. An automatic submerged arc welding apparatus for a steering shaft according to claim 2, characterized in that: synchronizing assembly (6) include two first gears (61), two first gear (61) rotate seat (4) coaxial setting with two respectively, first mount pad (2) with all rotate on second mount pad (3) and be connected with second gear (62), second gear (62) and first gear (61) one-to-one and meshing are equipped with synchronizing bar (65) between two second gears (62), the both ends of synchronizing bar (65) link to each other with two second gears (62) respectively, be equipped with second electric jar (63) on workstation (1), be equipped with on the telescopic link of second electric jar (63) along synchronous rack (64) of second electric jar (63) telescopic link axial extension, synchronous rack (64) and second gear (62) the meshing that corresponds second mount pad (3).

4. An automatic submerged arc welding apparatus for a steering shaft according to claim 3, characterized in that: the synchronous rod (65) comprises a plug connector (651) and a plug connecting cylinder (652), the plug connector (651) and the plug connecting cylinder (652) are respectively connected to the two second gears (62), the plug connector (651) is slidably inserted into the plug connecting cylinder (652), the first mounting seat (2) is connected to the workbench (1) in a sliding mode, and the sliding direction of the first mounting seat (2) is the same as the arrangement direction of the first mounting seat (2) and the second mounting seat (3).

5. An automatic submerged arc welding apparatus for a steering shaft according to claim 4, characterized in that: be equipped with stopper (653) on plug connector (651), offer on the socket joint section of thick bamboo (652) and supply stopper (653) to slide and inlay spacing groove (654) of establishing, spacing groove (654) extend along the glide direction of first mount pad (2).

6. An automatic submerged arc welding apparatus for a steering shaft according to claim 4, characterized in that: be provided with on workstation (1) and be used for driving removal subassembly (7) that first mount pad (2) removed, removal subassembly (7) include lead screw (71), the axial of lead screw (71) with the direction of sliding of first mount pad (2) is the same, lead screw (71) are rotated and are connected in workstation (1), lead screw (71) and first mount pad (2) threaded connection, be equipped with on workstation (1) drive lead screw (71) around the rotatory driving piece of its self axis.

7. An automatic submerged arc welding apparatus for a steering shaft according to claim 4, characterized in that: the welding flux collecting device is characterized in that a material collecting box (81) used for collecting welding fluxes is arranged on the workbench (1), the material collecting box (81) is located between the first mounting seat (2) and the second mounting seat (3), and the material collecting box (81) is located below the rotating seat (4).

8. An automatic submerged arc welding apparatus for a steering shaft according to claim 7, characterized in that: the material receiving box (81) is provided with a touch plate (82) used for touching the joint of the steering shaft and the part, and the touch plate (82) is positioned below the rotating seat (4).