CN115609218B - Auto-parts's welding set - Google Patents

Abstract

The invention discloses a welding device for automobile accessories, which relates to the field of welding and solves the problem that the welding surface of the conventional automobile accessory welding fixture is not accurately butted easily.

Description

Auto-parts's welding set

Technical Field

The invention relates to the field of welding, in particular to a welding device for automobile accessories.

Background

In the processing and production process, a welding procedure is carried out on the cylindrical and horn-shaped metal fittings of the automobile, and the two metal fittings are fixedly assembled through welding treatment;

according to the welding set that automobile parts processing proposed according to chinese laid-open patent CN217890063U, through the cooperation of backup pad, base, fixture, can satisfy the centre gripping of equidimension work piece not, at cooperation pull rod, insert pad, pivot, recess, can turn over the work piece to make the device can adapt to the centre gripping fixed work of equidimension work piece, the device can carry out the turn-over processing to the work piece after the centre gripping is fixed moreover, has effectually made things convenient for the welding operation of user to the many faces of work piece promptly.

Known through the comparison document among the prior art, two fixture need carry out welded auto parts centre gripping back to two, can only the interval between two auto parts of horizontal adjustment, because the part of fixture interior and auto parts contact is the rubber sand grip, two fixture are independent regulation, the pressure that applys to the auto parts through the rubber sand grip is not of uniform size promptly, then the deformation degree of rubber sand grip in two fixture is different, this just can appear two auto parts by the centre gripping back, the skew appears easily in the welding point of two auto parts butt joints, still need relapse to adjust the fixture many times, just can make the welding department between two auto parts align, this accommodation process is comparatively troublesome, for this reason, we have proposed an auto parts's welding set.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a welding apparatus for automobile parts that facilitates rapid alignment of a weld between two automobile parts placed in opposition.

In order to achieve the purpose, the invention provides the following technical scheme: the welding device for the automobile parts comprises a slide rail seat, wherein two sliding frames which are symmetrically distributed are embedded in the slide rail seat in a sliding mode, a motor is fixedly installed at one side end of the slide rail seat, a heterodromous threaded rod which is rotatably connected with the slide rail seat is fixedly installed at the output end of the motor, threads of the heterodromous threaded rod penetrate through the two sliding frames, and a rotating seat is embedded in the upper portion of each sliding frame in a rotating mode; the clamping mechanism for clamping and welding the automobile accessory is arranged at the side end of the rotating seat, and an adjusting mechanism is arranged in front of the clamping mechanism and the rotating seat; the transmission assembly is arranged at the side end of the sliding rail seat, drives the incongruous threaded rod to rotate through the motor, and adjusts the distance between the two sliding frames.

Preferably, fixture is including installing in one of them the roating seat is close to another the layer board of roating seat one side, the outside fixed mounting of layer board has the arc board, just the arc board is located the upper portion of layer board tray, the inside fixed mounting of arc board has a plurality of to be the sealed section of thick bamboo that the circumference equidistance distributes, just the bottom of sealed section of thick bamboo is the cavity form, the inside slip of sealed section of thick bamboo has inlayed the piston post, just the bottom of piston post top flange with fixed mounting has spring one between the sealed section of thick bamboo, the inside of piston post has inlayed the telescopic link through two slips of spring, through the top design arc board at the layer board, when a plurality of telescopic links downwardly extending of arc inboard portion, can be to special-shaped auto parts centre gripping, just the bottom fixed mounting of telescopic link has the rubber hammer, and the frictional force between rubber hammer and the auto parts is big, a plurality of the upper portion of sealed section of thick bamboo is equipped with the pressure components.

Preferably, the pressurizing assembly includes fixed mounting in the trachea on layer board upper portion, just the top of a sealed section of thick bamboo pass through the branch pipe with the trachea intercommunication, tracheal upper end is through the fixed inflator that is equipped with of installation pipe, just the inside of inflator slides and has inlayed the piston disc, the one end fixed mounting that the installation pipe was kept away from to the piston disc has the push rod, just the push rod slide run through in the inflator, when the push rod impels the piston disc, can pass through the branch pipe with the inside of the inside gas of inflator input to a sealed section of thick bamboo, the inflator with be equipped with spacing subassembly between the push rod.

Preferably, spacing subassembly is including seting up in a plurality of spacing groove of push rod surface, the inflator is close to a terminal surface fixed mounting of push rod has spacing frame, just the inside of spacing frame slides and has inlayed the bolt, the bottom of bolt with spacing groove slip gomphosis, the left surface of bolt and spacing groove is the slope form, and its right side end is the axial perpendicular, the upper portion fixed mounting of bolt has the pull handle, just the upper portion of spacing frame with install the extension spring between the bottom of pull handle, the extension spring is exerted decurrent power to pull handle and bolt all the time.

Preferably, adjustment mechanism including install in the layer board with slider between the roating seat, the slider with the roating seat slides the laminating, just the slider is kept away from the one end of roating seat fixed inlay in the inside of layer board, the inside of roating seat is rotated and is installed three commentaries on classics post that is circumference equidistance and distributes, the commentaries on classics post is close to the articulated slide bar of installing of one end of layer board, the articulated three sleeve that is circumference equidistance and distributes of installing in the outside of slider, just the slide bar slide peg graft in the gomphosis of telescopic inside, three group's sleeves of slider accessible and slide bar, the outer wall of laminating the roating seat carries out the slip of minizone, and is three be equipped with the locking subassembly between the commentaries on classics post.

Preferably, the locking subassembly include the screw thread install in the inside handle screw rod of roating seat, just the handle screw rod is close to the one end of slider is rotated and is inlayed the spliced pole, and when the handle screw rod rotates, can stretch into toward the inside of roating seat, promotes the spliced pole, the rotary column is close to one side of roating seat axis slides and pegs graft and has the locking chock, just the locking chock is kept away from the one end of rotary column with the articulated connecting rod of installing between the spliced pole, the removal of spliced pole can promote the locking chock through the connecting rod.

Preferably, the locking chock is close to the one end of connecting rod is hard plastic block, just the other end of locking chock is the block rubber, friction line has been seted up to the surface of rotary column, and when locking chock extruded with the rotary column, the cooperation of block rubber and friction line can provide the limited effect of locking chock to the rotary column.

Preferably, drive assembly including rotate inlay in the inside transmission shaft of carriage, the inside of carriage corresponds the fixed surface of roating seat has cup jointed bevel gear one, the lower part of transmission shaft corresponds the inside of carriage is rotated and has been inlayed the rotary drum, just the fixed surface of rotary drum has cup jointed bevel gear three, the upper and lower both ends fixed mounting of transmission shaft has bevel gear two, just bevel gear two with bevel gear one with three equal active meshes of bevel gear, the inside slip of rotary drum has inlayed the elliptical rod, the both ends of elliptical rod are cylindricly, and the middle section is oval form, the cylindric rotation at elliptical rod both ends inlay in the inside of slide rail seat, the rotary drum can follow the carriage promptly and slide, also can follow the elliptical rod and rotate, the outside fixed mounting of slide rail seat has gear motor, just gear motor's output with the elliptical rod is fixed connection.

Preferably, the inflator is kept away from the one end of push rod is equipped with the check valve through the solid fixed tube, just the outside of solid fixed tube is equipped with the manometer through the branch union coupling, and the circulation direction of check valve is external to the inside unidirectional flow of inflator, and the inside atmospheric pressure value of inflator can be observed in real time in the design of manometer.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the arc plate is designed on the upper part of the supporting plate, the special-shaped automobile accessory can be effectively clamped and positioned under the action of the plurality of telescopic rods and the rubber hammer, the position of a welding point between two automobile accessories can be quickly adjusted and aligned under the action of the adjusting mechanism, the three rotating columns are limited by rotating the handle screw rod, the supporting plate and the rotating seat are fixed, and meanwhile, the automobile accessory in welding can be conveniently and quickly rotated under the action of the transmission assembly.

Drawings

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

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of the structure of the rotary base, the supporting plate and the arc plate of the present invention;

FIG. 4 is a schematic view of the internal structure of the air cylinder and the sealing cylinder of the present invention;

FIG. 5 is a schematic view of a spacing assembly of the present invention;

FIG. 6 is a schematic view of the slider position distribution of the present invention;

FIG. 7 is a schematic view of the internal structure of the rotary base according to the present invention;

FIG. 8 is a schematic view of the interior of the carriage of the present invention;

FIG. 9 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;

FIG. 10 is an enlarged view taken at B of FIG. 5 in accordance with the present invention;

FIG. 11 is an enlarged view of the invention at C of FIG. 8;

fig. 12 is a schematic view of the structure of the telescopic rod and the rubber hammer of the invention.

In the figure: 1. a slide rail seat; 2. an electric motor; 3. a carriage; 4. a rotating base; 5. a clamping mechanism; 6. a limiting component; 7. an adjustment mechanism; 8. locking the component; 9. a transmission assembly; 10. a pallet; 11. an arc plate; 12. an air pipe; 13. an air cylinder; 14. a push rod; 15. a sealing cylinder; 16. a piston disc; 17. a piston post; 18. a first spring; 19. a telescopic rod; 20. a rubber hammer; 21. a second spring; 22. a one-way valve; 23. a pressure gauge; 24. a limiting groove; 25. a limiting frame; 26. a bolt; 27. a tension spring; 28. pulling a handle; 29. a slider; 30. turning the column; 31. a sleeve; 32. a slide bar; 33. a handle screw; 34. locking the chock block; 35. a connecting rod; 36. a first bevel gear; 37. a drive shaft; 38. a second bevel gear; 39. a drum; 40. a third bevel gear; 41. an elliptical rod; 42. a reduction motor; 43. connecting columns.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 and 2, a welding device for automobile accessories in the drawings includes a slide rail base 1, two sliding frames 3 symmetrically distributed are slidably embedded in the slide rail base 1, a motor 2 is fixedly mounted at one side end of the slide rail base 1, a non-directional threaded rod rotatably connected with the slide rail base 1 is fixedly mounted at an output end of the motor 2, the non-directional threaded rod is threaded through the two sliding frames 3, and a rotating base 4 is rotatably embedded at the upper portions of the sliding frames 3; the clamping mechanism 5 is used for clamping and welding the automobile accessory part, the clamping mechanism 5 is arranged at the side end of the rotating seat 4, and an adjusting mechanism 7 is arranged in front of the clamping mechanism 5 and the rotating seat 4; drive assembly 9 rotates two roating seats 4, and drive assembly 9 installs in the side of slide rail seat 1, drives the rotation of incongruous threaded rod through motor 2, adjusts the interval between two carriage 3.

Referring to fig. 3, 4, 9 and 12, in the drawings, the clamping mechanism 5 includes a supporting plate 10 installed on one side of one of the rotating seats 4 close to the other rotating seat 4, an arc plate 11 is fixedly installed outside the supporting plate 10, the arc plate 11 is located on the upper portion of the supporting block of the supporting plate 10, a plurality of sealing cylinders 15 are fixedly installed inside the arc plate 11 and are distributed at equal intervals in the circumference, the bottom of each sealing cylinder 15 is hollow, a piston column 17 is slidably embedded inside each sealing cylinder 15, a spring 18 is fixedly installed between the bottom of a top flange of the piston column 17 and the sealing cylinder 15, a telescopic rod 19 is slidably embedded inside the piston column 17 through a spring 21, the arc plate 11 is designed above the supporting plate 10, when the plurality of telescopic rods 19 inside the arc plate 11 extend downwards, the special-shaped automobile parts can be clamped, a rubber hammer 20 is fixedly installed at the bottom of the telescopic rod 19, the friction force between the rubber hammer 20 and the automobile parts is large, and a pressurizing assembly is installed on the upper portions of the plurality of the sealing cylinders 15.

Referring to fig. 4, the pressurizing assembly in the figure includes an air tube 12 fixedly installed on the upper portion of the support plate 10, the top of the sealing cylinder 15 is communicated with the air tube 12 through a branch tube, an air cylinder 13 is fixedly installed at the upper end of the air tube 12 through an installation tube, a piston disc 16 is slidably embedded in the air cylinder 13, a push rod 14 is fixedly installed at one end of the piston disc 16 far away from the installation tube, the push rod 14 slidably penetrates through the air cylinder 13, when the push rod 14 pushes the piston disc 16 forward, air in the air cylinder 13 can be input into the sealing cylinder 15 through the branch tube, and a limit assembly 6 is installed between the air cylinder 13 and the push rod 14.

Referring to fig. 5 and 10, the position-limiting assembly 6 shown in the drawings includes a plurality of position-limiting grooves 24 formed on the outer surface of the push rod 14, a position-limiting frame 25 is fixedly mounted on one end surface of the air cylinder 13 close to the push rod 14, a bolt 26 is slidably embedded in the position-limiting frame 25, the bottom of the bolt 26 is slidably engaged with the position-limiting grooves 24, the left side surfaces of the bolt 26 and the position-limiting grooves 24 are inclined, the right side end thereof is an axial vertical surface, a pull handle 28 is fixedly mounted on the upper portion of the bolt 26, a tension spring 27 is mounted between the upper portion of the position-limiting frame 25 and the bottom of the pull handle 28, and the tension spring 27 always applies a downward force to the pull handle 28 and the bolt 26.

Referring to fig. 6 and 7, in the drawings, the adjusting mechanism 7 includes a slider 29 installed between the supporting plate 10 and the rotary seat 4, the slider 29 is slidably attached to the rotary seat 4, one end of the slider 29 away from the rotary seat 4 is fixedly embedded inside the supporting plate 10, three rotary columns 30 are rotatably installed inside the rotary seat 4, the ends of the rotary columns 30 close to the supporting plate 10 are hinged to slide rods 32, three sleeves 31 are hinged to the outside of the slider 29, the slide rods 32 are slidably inserted into the sleeves 31, the slider 29 can be attached to the outer wall of the rotary seat 4 to slide within a small range by the engagement of the three sets of sleeves 31 and the slide rods 32, and a locking assembly 8 is installed between the three rotary columns 30.

Referring to fig. 7, in the illustration, the locking assembly 8 includes a handle screw 33 threadedly installed inside the rotary base 4, and a connecting column 43 is rotatably embedded at one end of the handle screw 33 close to the slider 29, when the handle screw 33 rotates, the handle screw can extend into the rotary base 4 to push the connecting column 43, a locking plug 34 is inserted into one side of the rotary column 30 close to the axis of the rotary base 4 in a sliding manner, a connecting rod 35 is hinged between one end of the locking plug 34 far away from the rotary column 30 and the connecting column 43, and the connecting column 43 can move to push the locking plug 34 through the connecting rod 35.

Referring to fig. 7, in the illustration, one end of the locking stopper 34 close to the connecting rod 35 is a hard plastic block, the other end of the locking stopper 34 is a rubber block, friction lines are formed on the outer surface of the rotary column 30, and when the locking stopper 34 and the rotary column 30 are extruded, the rubber block and the friction lines cooperate to provide a limiting effect of the locking stopper 34 on the rotary column 30.

The working principle of the quick alignment of the welding position between two steam fittings which are oppositely arranged is convenient: firstly, two automobile parts needing welding treatment are respectively clamped and fixed at the upper parts of two supporting plates 10, the automobile parts are placed between the supporting plates 10 and the arc plates 11 in the clamping process, then the push rods 14 are pushed in, in the pushing process, the push rods 14 can only extend into the air cylinders 13 through the embedding action of the bolts 26 and the limiting grooves 24, and cannot reset, at the moment, air in the air cylinders 13 is input into the sealing cylinders 15 through the air pipes 12, the piston columns 17 in the sealing cylinders 15 are pushed downwards, the springs 18 are compressed, when the piston columns 17 extend downwards, the automobile parts can be subjected to multi-angle jacking treatment, and the automobile parts can be self-adapted to the shapes of the automobile parts through the action of the springs 21 and the telescopic rods 19, the extending state of the telescopic rod 19 is adjusted, namely, multi-point effective jacking can be carried out on the automobile parts, the automobile parts are effectively fixed, after the two automobile parts are fixed, the two sliding frames 3, namely the two automobile parts, can be close to each other under the action of the motor 2 and the incongruous threaded rod, after the two automobile parts are attached, if the butt joint of the welding points and the welding surfaces is not accurate, the small-range vertical plane direction adjustment treatment can be carried out on the supporting plate 10 and the automobile parts through the matching of the sliding block 29, the sleeve 31 and the sliding rod 32, namely, the position adjustment can be rapidly carried out on the welding point surfaces in the vertical direction of the two automobile parts, the welding point surfaces at the butt joint of the two automobile parts can not deviate, and the welding finished products are influenced;

after the position control is accomplished, need twist reverse handle screw rod 33, handle screw rod 33 takes spliced pole 43 to stretch into toward the inside of roating seat 4, stretch into the in-process, can push locking chock 34 through connecting rod 35, make locking chock 34 carry out locking limit treatment to rotary column 30, the locked state is handled to rotary column 30 inside roating seat 4 promptly, can't rotate, slider 29 after adjusting this moment just can't slide, after the fitting surface butt joint between two vapour accessories is accomplished promptly, two vapour accessories handle fixed state, can directly carry out welding process.

Example 2

Referring to fig. 2, 3, 8 and 11, in this embodiment, as further described in embodiment 1, the transmission assembly 9 includes a transmission shaft 37 rotatably embedded in the sliding frame 3, a first bevel gear 36 is fixedly sleeved inside the sliding frame 3 corresponding to the outer surface of the rotating base 4, a rotating drum 39 is rotatably embedded at the lower portion of the transmission shaft 37 corresponding to the inside of the sliding frame 3, a third bevel gear 40 is fixedly sleeved on the outer surface of the rotating drum 39, second bevel gears 38 are fixedly installed at the upper and lower ends of the transmission shaft 37, the second bevel gears 38 are movably engaged with the first bevel gears 36 and the third bevel gears 40, an elliptical rod 41 is slidably embedded inside the rotating drum 39, two ends of the elliptical rod 41 are cylindrical, the middle section of the elliptical rod is elliptical, and the cylindrical rods at two ends of the elliptical rod 41 are rotatably embedded inside the sliding rail base 1, that is, the rotating drum 39 can slide along with the sliding frame 3 and also can rotate along with the elliptical rod 41, a reduction motor 42 is fixedly installed outside the sliding rail base 1, and an output end of the reduction motor 42 is fixedly connected with the elliptical rod 41.

In this embodiment: the reduction motor 42 has a self-locking function, that is, when the reduction motor 42 does not operate, the two bevel gears 38 are respectively engaged with the bevel gear one 36 and the bevel gear three 40, and the elliptic rod 41 is locked, the rotating base 4 is also in a locked state, so that in embodiment 1, the handle screw 33 can be directly rotated;

in the welding process, when the steam fittings are required to be turned over or the tubular steam fittings are required to be welded in a rotating mode, the speed reducing motor 42 can be directly started, and when the oval rod 41 drives the rotating drum 39 to rotate, the rotating base 4 can also rotate along with the rotating drum, so that the steam fittings in the welding operation can be turned over.

Example 3

Referring to fig. 4, in the present embodiment, for further explanation of other embodiments, a check valve 22 is disposed at one end of the air cylinder 13 far away from the push rod 14 through a fixed pipe, a pressure gauge 23 is disposed at an outer side of the fixed pipe through a branch pipe, a flow direction of the check valve 22 is a one-way flow from an outside to an inside of the air cylinder 13, and the pressure gauge 23 is designed to observe an air pressure value inside the air cylinder 13 in real time.

In this embodiment: in order to prevent the air leakage condition in the inner parts of the air cylinder 13, the air pipe 12 and the sealing cylinder 15, which results in unstable clamping, the internal pressure condition can be observed in real time through the pressure gauge 23, and meanwhile, the air charging treatment can be carried out on the inner part of the air cylinder 13 through the action of the one-way valve 22;

the three parts of the gas cylinder 13, the gas pipe 12 and the sealing cylinder 15 can be filled with not only gas but also liquid.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an auto-parts's welding set, includes slide rail seat (1), just the inside slip of slide rail seat (1) has inlayed two carriage (3) that are the symmetric distribution, one of them side end fixed mounting of slide rail seat (1) has motor (2), just the output fixed mounting of motor (2) with slide rail seat (1) rotates the incorgruous threaded rod of connecting, incorgruous threaded rod screw thread runs through in two carriage (3), its characterized in that: the upper part of the sliding frame (3) is embedded with a rotating seat (4) in a rotating way;

the clamping mechanism (5) for clamping and welding the automobile parts is arranged at the side end of the rotating seat (4), and an adjusting mechanism (7) is arranged in front of the clamping mechanism (5) and the rotating seat (4);

the transmission assembly (9) rotates the two rotating seats (4), and the transmission assembly (9) is installed at the side end of the sliding rail seat (1);

the clamping mechanism (5) comprises a supporting plate (10) which is arranged on one side of one rotating seat (4) and close to the other rotating seat (4), an arc plate (11) is fixedly arranged outside the supporting plate (10), the arc plate (11) is located on the upper portion of a supporting block of the supporting plate (10), a plurality of sealing cylinders (15) which are distributed at equal intervals in the circumference are fixedly arranged inside the arc plate (11), the bottoms of the sealing cylinders (15) are hollow, a piston column (17) is embedded inside the sealing cylinders (15) in a sliding mode, a spring I (18) is fixedly arranged between the bottom of a top flange of the piston column (17) and the sealing cylinders (15), an expansion rod (19) is embedded inside the piston column (17) in a sliding mode through a spring II (21), a rubber hammer (20) is fixedly arranged at the bottom of the expansion rod (19), and a pressurizing assembly is arranged on the upper portions of the sealing cylinders (15);

the adjusting mechanism (7) comprises a sliding block (29) installed between the supporting plate (10) and the rotating seat (4), the sliding block (29) is in sliding fit with the rotating seat (4), one end, far away from the rotating seat (4), of the sliding block (29) is fixedly embedded in the supporting plate (10), three rotating columns (30) distributed at equal intervals in the circumference are rotatably installed in the rotating seat (4), one end, close to the supporting plate (10), of each rotating column (30) is hinged with a sliding rod (32), three sleeves (31) distributed at equal intervals in the circumference are hinged to the outer portion of the sliding block (29), the sliding rods (32) are inserted in the sleeves (31) in a sliding mode, and locking assemblies (8) are arranged among the three rotating columns (30);

locking subassembly (8) including the screw thread install in inside handle screw rod (33) of roating seat (4), just handle screw rod (33) are close to the one end rotation of slider (29) has inlayed spliced pole (43), rotary column (30) are close to one side slip grafting of roating seat (4) axis has locking chock (34), just locking chock (34) are kept away from the one end of rotary column (30) with connecting rod (35) are installed in the articulated between spliced pole (43).

2. The welding device for automobile parts according to claim 1, wherein: the pressurizing assembly comprises a gas pipe (12) fixedly installed on the upper portion of the supporting plate (10), the top of the sealing barrel (15) is communicated with the gas pipe (12) through a branch pipe, the upper end of the gas pipe (12) is fixedly provided with a gas cylinder (13) through an installation pipe, a piston disc (16) is embedded in the gas cylinder (13) in a sliding mode, a push rod (14) is fixedly installed at one end, far away from the installation pipe, of the piston disc (16), the push rod (14) penetrates through the gas cylinder (13) in a sliding mode, and a limiting assembly (6) is arranged between the gas cylinder (13) and the push rod (14).

3. The welding device for automobile parts according to claim 2, wherein: spacing subassembly (6) are including seting up in a plurality of spacing groove (24) of push rod (14) surface, inflator (13) are close to a terminal surface fixed mounting of push rod (14) has spacing frame (25), just bolt (26) have been inlayed in the inside slip of spacing frame (25), the bottom of bolt (26) with spacing groove (24) slip gomphosis, the upper portion fixed mounting of bolt (26) has pull handle (28), just the upper portion of spacing frame (25) with install extension spring (27) between the bottom of pull handle (28).

4. The welding device for automobile parts according to claim 1, wherein: the locking chock (34) is close to one end of the connecting rod (35) is a hard plastic block, the other end of the locking chock (34) is a rubber block, and friction grains are arranged on the outer surface of the rotary column (30).

5. The welding device for automobile parts according to claim 1, wherein: drive assembly (9) including rotate inlay in inside transmission shaft (37) of carriage (3), the inside of carriage (3) corresponds the external fixed surface of roating seat (4) has cup jointed bevel gear one (36), the lower part of transmission shaft (37) corresponds the inside of carriage (3) is rotated and has been inlayed rotary drum (39), just bevel gear three (40) have been cup jointed to the external fixed surface of rotary drum (39), the upper and lower both ends fixed mounting of transmission shaft (37) has bevel gear two (38), just bevel gear two (38) with bevel gear one (36) with the equal active meshing of bevel gear three (40), elliptic rod (41) have been inlayed in the inside slip of rotary drum (39), the both ends of elliptic rod (41) are oval, and the middle section is the ellipse form, the cylindric rotation at elliptic rod (41) both ends inlay in the inside of slide rail seat (1), the outside fixed mounting of slide rail seat (1) has gear motor (42), just the output of gear motor (42) with elliptic rod (41) are fixed connection.

6. The welding device for automobile parts according to claim 2, wherein: one end of the air cylinder (13) far away from the push rod (14) is provided with a one-way valve (22) through a fixed pipe, and the outer side of the fixed pipe is provided with a pressure gauge (23) through a branch pipe.

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