CN115430984B

CN115430984B - Multi-vehicle-shape switching device for vehicle body welding

Info

Publication number: CN115430984B
Application number: CN202211276329.1A
Authority: CN
Inventors: 周吉伟
Original assignee: Efdi Shenyang Automation Technology Co ltd
Current assignee: Efdi Shenyang Automation Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-24
Anticipated expiration: 2042-10-19
Also published as: CN115430984A

Abstract

The invention discloses a multi-vehicle-shaped switching device for vehicle body welding, which relates to the technical field of welding tool fixture switching and comprises a white vehicle body fixture base for carrying a white vehicle body fixture and a switching base for clamping and positioning the white vehicle body fixture base, wherein two ends of the switching base are upwards protruded to form side boxes, mounting cavities are formed in the side boxes, and an even number of clamping blocks are arranged on opposite surfaces of the two side boxes in a sliding manner. This many car shape auto-change over device of automobile body welding can be according to the inclination change of switching base and side case, and the effort is held to the pressure between white automobile body anchor clamps base of self-adaptation and the grip block, guarantees that the mating holes can not be because of too big then local deformation of atress, influences the cooperation precision of mating holes and cooperation post, also avoids keeping too big pressure for a long time between grip block and the white automobile body anchor clamps base side simultaneously and causes white automobile body anchor clamps base surface deformation.

Description

Multi-vehicle-shape switching device for vehicle body welding

Technical Field

The invention relates to the technical field of welding tool fixture switching, in particular to a multi-vehicle-shaped switching device for vehicle body welding.

Background

With the rapid progress of the automobile industry in China, in order to seize the market, the updating speed of automobiles is increased, so that the requirement of building a welding production line capable of producing multiple automobile types in the same series is important, and therefore, a clamp for clamping a white automobile body needs to be replaced by using a multiple automobile type switching device for automobile body welding.

In the prior art, in order to weld a body-in-white, mechanisms corresponding to a fixture base for fixing the body-in-white are installed on a support plate of a positioner (the switching base recorded in the specification is equal to the support plate of the positioner), a clamping column and a clamping hole which are used for connection are controlled by a cylinder or an electric controller to be connected and matched (the clamping column and the clamping hole are equal to the matching column and the matching hole recorded in the specification), when the body-in-white is required to be replaced, the clamping column is withdrawn by the cylinder control or the electric controller to realize the separation of clamping matching, but the space on a welding production line is limited, too many cylinder assemblies or electric controllers can influence the welding of a welding robot, and meanwhile, when the support plate of the positioner is inclined by the clamping column and clamping hole matching mode, the local stress of the clamping hole is too large, and the clamping hole is easy to deform, the matching use precision of the clamping column and the clamping hole is influenced by welding positioning.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a multi-vehicle-shaped switching device for vehicle body welding, which can realize quick switching of a white vehicle body fixture base, can self-adaptively adjust the clamping pressure between a clamping block and the white vehicle body fixture base according to the inclination angles of a switching base and a side box, and avoids the problem that the use precision is influenced due to deformation of a matching hole caused by overlarge load borne by the matching hole and a matching column.

The technical scheme of the invention is as follows:

in order to achieve the purpose, the invention is realized by the following technical scheme: a multi-vehicle-shape switching device for vehicle body welding comprises a white vehicle body clamp base for carrying a white vehicle body clamp, a motor for driving the switching base to rotate, a side case for loading the motor, and a switching base for clamping and positioning the white vehicle body clamp base, wherein two ends of the switching base protrude upwards to form the side case, an installation cavity opening is formed in the side case, an even number of clamping blocks are arranged on opposite surfaces of the two side cases in a sliding mode, a matching hole is formed in the center of each clamping block, matching columns are installed in the matching holes in a matching mode and symmetrically and fixedly connected to two side surfaces of the white vehicle body clamp base, a spline sleeve is fixedly installed on an output shaft of the motor, an extrusion disc is connected to key teeth of the spline sleeve in a sliding mode, an even number of V-shaped spiral chutes are symmetrically arranged on the outer peripheral surface of the extrusion disc, fixed connecting rods are arranged on the side surfaces of the side case at intervals in the circumferential direction, extrusion rollers are fixedly connected to one end, far away from the side case, an extrusion roller is in extrusion fit with the V-shaped spiral chutes, an extrusion assembly is arranged at one end, an extrusion assembly is arranged on the side case, an upper extrusion assembly and a lower extrusion assembly is connected with an extrusion feeding assembly, and an elastic pushing assembly is connected with a lower extrusion feeding assembly, and a lower extrusion assembly.

Optionally, the extrusion subassembly includes intermediate ring, squeeze bar and extrusion bulb, and the squeeze bar runs through the inner wall of side case, and the one end fixedly connected with extrusion bulb of squeeze bar, squeeze bar keep away from the extrusion bulb and lie in the intraoral one end fixedly connected with intermediate ring of installation cavity, and the extrusion subassembly still includes the movable block, goes up sloping block and sloping block down, goes up sloping block fixed connection at the upper surface of movable block, and the sloping block corresponds the lower surface of rigid coupling at the movable block down.

Optionally, the upper pushing and pressing assembly includes an upper guide rod, an upper guide rail and an upper inclined pushing guide pillar, the upper guide rod is slidably connected inside the upper guide rail, and the lower surface of the upper guide rod is provided with the upper inclined pushing guide pillar corresponding to the upper inclined block.

Optionally, the lower pushing assembly includes a lower guide rod, a lower guide rail and a lower inclined pushing guide pillar, the lower guide rod is slidably connected in the lower guide rail, and the upper surface of the lower guide rod and a position corresponding to the lower inclined block are fixedly connected with the lower inclined pushing guide pillar.

Optionally, the spiral feeding assembly comprises a spiral pipe, two spiral grooves circumferentially arranged on the outer peripheral surface of the spiral pipe, spiral guide pillars, a blocking compression ring and a torsion spring, the spiral pipe is rotatably arranged in the installation cavity opening, the one end of the spiral pipe is fixedly connected with the blocking compression ring, one end of the blocking compression ring far away from the spiral pipe is sleeved with the torsion spring, the lower surface of the upper guide rod and the upper surface of the lower guide rod correspond to the spiral guide pillars fixedly connected with the positions, and each spiral guide pillar is in sliding fit with the corresponding spiral groove.

Optionally, the elastic component includes the rotating ring, six telescopic links and coupling spring, six telescopic link circumference settings are kept away from on the terminal surface of spiral pipe at the rotating ring, the one end that the rotating ring is close to the helicla flute is equipped with the rotation notch, the inner peripheral surface circumference of rotation notch is equipped with two rotation helicla flutes, the one end correspondence that the spiral pipe is close to the rotation helicla flute is equipped with two rotation guide pillars, rotation guide pillar sliding fit is in rotating the helicla flute, the one end and the grip block fixed connection of rotating ring are kept away from to the telescopic link, the coupling spring cover is established in the outside of telescopic link and coupling spring's both ends respectively with grip block and telescopic link fixed connection.

Optionally, the front end face of the side box is symmetrically provided with first matching holes, the upper guide rod is connected in the first matching holes in a sliding mode, the rear end face of the side box is symmetrically provided with second matching holes, and the lower guide rod is connected in the second matching holes in a sliding mode.

Optionally, two equal fixedly connected with horizontal connecting block of terminal surface around the side machine case, two horizontal connecting block are located same level, set up the spread groove of changing the white automobile body anchor clamps base and using the carrier on the horizontal connecting block.

Optionally, a driving box shell is arranged at one end of the side machine box close to the motor, and a through hole corresponding to the extrusion rod is formed in the end face of the driving box shell.

The invention provides a multi-vehicle-shape switching device for vehicle body welding, which has the following beneficial effects:

this car body welding multi-car shape auto-change over device, through setting up V type spiral chute, the extrusion dish, on bulldoze the subassembly, push down the pressure subassembly, the extrusion subassembly, the spiral feed subassembly, elastic component and grip block, when carrying out the white body anchor clamps of different motorcycle types and changing, only need to push away to switching base and side case corresponding position with the carrier of placing corresponding anchor clamps, can make after the concatenation break away from the cooperation between grip block and the cooperation post, be convenient for switch over white body anchor clamps base fast, be favorable to improving efficiency, when switching base and side case drive white body anchor clamps base, white body anchor clamps and white automobile body slope, angular rotation through the motor makes V type spiral chute pivoted while remove along the spline housing, thereby make the effort that elastic component provided the grip block increase, thereby can be according to the inclination change of switching base and side case, the self-adaptation adjusts the pressure holding effort between white body anchor clamps base and the grip block, guarantee that the mating hole can not warp because of atress is too big then local, influence the mating hole and the cooperation precision of cooperation post, also avoid simultaneously the grip block and white body anchor clamps base side face to keep too big pressure for a long-time and cause.

Drawings

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic structural view of the inside of the side box and the inside of the driving box shell;

FIG. 4 is an enlarged view of the structure of part A in FIG. 3;

FIG. 5 is an enlarged view of the part B in FIG. 2;

FIG. 6 is a schematic view of the internal structure of the mounting cavity;

FIG. 7 is a schematic view of the fitting position of the V-shaped spiral chute and the squeeze rollers;

FIG. 8 is a schematic view of the structure of the screw feeding assembly and the elastic assembly;

FIG. 9 is a schematic front view of the structure of FIG. 8;

FIG. 10 is a schematic view of the engagement positions of the pressing assembly, the upper pushing assembly and the lower pushing assembly;

FIG. 11 is a schematic view of the positions of the upper and lower swash blocks;

FIG. 12 is a schematic view showing the positions of the first and second fitting holes;

FIG. 13 is a schematic view showing the state where the solenoid and the rotary ring are separated from each other.

In the figure: 1. switching the base; 2. a side box; 3. a clamping block; 4. a mating hole; 5. a rotating ring; 6. a telescopic rod; 7. a connecting spring; 8. a spiral tube; 9. a helical groove; 10. a spiral guide post; 11. a blocking ring; 12. rotating the notch; 13. a torsion spring; 14. a lower guide rod; 15. a lower guide rail; 16. an upper guide rod; 17. an upper guide rail; 18. pushing the guide post upwards in an inclined way; 19. pushing the guide pillar downwards obliquely; 20. a movable block; 21. an upper inclined block; 22. a lower inclined block; 23. an intermediate ring; 24. an extrusion stem; 25. extruding the ball head; 26. an extrusion disc; 27. a V-shaped spiral chute; 28. extruding the roller; 29. fixing the connecting rod; 30. a side chassis; 31. a motor; 32. a spline housing; 33. a drive case housing; 34. installing a cavity opening; 35. a first mating hole; 36. a second mating hole; 37. a horizontal connecting block; 38. a body-in-white clamp base; 39. a mating post; 40. rotating the guide post; 41. the spiral groove is rotated.

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.

Referring to fig. 1 to 13, the present invention provides a technical solution: a car body welding multi-vehicle-shape switching device comprises a white car body clamp base 38 for carrying a white car body clamp, a switching base 1 for clamping and positioning the white car body clamp base 38, a motor 31 for driving the switching base 1 to rotate, a side chassis 30 for loading the motor 31, wherein two ends of the switching base 1 protrude upwards to form side chassis 2, a mounting cavity 34 is formed in the side chassis 2, an even number of clamping blocks 3 are arranged on opposite surfaces of the two side chassis 2 in a sliding manner, the number of the clamping blocks 3 in the technical scheme is four, different even number of clamping blocks 3 can be selected for connection and use according to actual requirements during use, a matching hole 4 is formed in the center of each clamping block 3, a matching column 39 is installed in the matching hole 4 in a matching manner, the matching column 39 is symmetrically and fixedly connected to two side surfaces of the white car body clamp base 38, a clamp for fixing a white car body is installed above the white car body clamp base 38, and understanding of the attached drawings is not influenced by excessive unnecessary structures, and the situation that the upper part of the white car body clamp base 38 is not drawn is explained;

as shown in fig. 4, a driving box shell 33 is arranged at one end of the side machine box 30 close to the motor 31, a through hole corresponding to the extrusion rod 24 is arranged on an end face of the driving box shell 33, a spline sleeve 32 is fixedly installed on an output shaft of the motor 31, a extrusion disc 26 is slidably connected to a spline of the spline sleeve 32, an even number of V-shaped spiral chutes 27 are symmetrically arranged on an outer circumferential surface of the extrusion disc 26, the extrusion rollers 28 are positioned at the bottom of a V-shaped opening of the V-shaped spiral chutes 27 in an unstressed state of the connecting spring 7, so that the V-shaped spiral chutes 27 can be urged to move in a direction away from the motor 31 along the spline sleeve 32 no matter the switching base 1 and the side machine box 2 rotate in any direction, fixed connecting rods 29 are circumferentially arranged at intervals on the side surface of the side machine box 30, the extrusion rollers 28 are fixedly connected to one end of the fixed connecting rods 29 away from the side machine box 30, the extrusion rollers 28 are in extrusion fit with the V-shaped spiral chutes 27, rotating wear-resistant rings of the extrusion rollers 28 are arranged at two ends of the extrusion rollers 28, and are in extrusion fit with the V-shaped spiral chutes 27, so as to avoid the reduction of the local wear precision of the use;

as shown in fig. 6 and 7, an extrusion assembly is in extrusion fit at one end of the extrusion disc 26 far away from the side chassis 30, the extrusion assembly includes an intermediate ring 23, an extrusion rod 24 and an extrusion ball 25, the extrusion rod 24 penetrates through the inner wall of the side chassis 2, the extrusion ball 25 is fixedly connected at one end of the extrusion rod 24 far away from the extrusion ball 25 and is fixedly connected with the intermediate ring 23 at one end located in the mounting cavity opening 34, the extrusion assembly further includes a movable block 20, an upper inclined block 21 and a lower inclined block 22, the upper inclined block 21 is fixedly connected to the upper surface of the movable block 20, the lower inclined block 22 is fixedly connected to the lower surface of the movable block 20 correspondingly, as shown in fig. 10 and 11, the upper pushing assembly and the lower pushing assembly are in sliding fit with the extrusion assembly respectively, an upper pushing assembly is arranged between two side surfaces in the mounting cavity opening 34, the upper pushing assembly includes an upper guide rod 16, an upper guide rail 17 and an upper inclined pushing guide rod 18, the upper guide rod 16 is slidably connected to the upper guide rail 17, the lower guide rod 16 is arranged on the lower surface of the upper guide rail 16, the lower guide rod 16 is provided with an upper inclined pushing assembly 18 corresponding to the upper inclined block 21, a lower guide rod 14 is arranged below the lower guide rod 14, the lower guide rod 14 is connected to a lower inclined pushing assembly 14, the lower inclined block 14, the lower guide rod 14 and is connected to the lower inclined pushing assembly 14, the lower guide rod 14, and the lower inclined block 22, and the upper inclined block 14, the lower guide rod 14 is connected to push the upper inclined block 22, and the lower guide rod 14, the lower inclined block 22, and the lower inclined block 22, the inclined block 14, and the inclined block 14, and the inclined block 22 is connected to push the upper inclined block 14, and the inclined block 22 in the inclined block 14;

as shown in fig. 8 and 9, the upper pushing component and the lower pushing component are further in sliding fit with a spiral feeding component, the spiral feeding component comprises a spiral pipe 8, two spiral grooves 9 arranged on the outer peripheral surface of the spiral pipe 8 in a circumferential direction, spiral guide pillars 10, a retaining ring 11 and a torsion spring 13, the spiral pipe 8 is rotatably arranged in the mounting cavity opening 34, the retaining ring 11 is fixedly connected to one end of the spiral pipe 8, the retaining ring 11 is sleeved with the torsion spring 13 at the end far away from the spiral pipe 8, spiral guide pillars 10 are fixedly connected to the lower surface of the upper guide rod 16 and the upper surface of the lower guide rod 14 at corresponding positions, each spiral guide pillar 10 is in sliding fit with the corresponding spiral groove 9, when the connecting spring 7 and the torsion spring 13 are not stressed, the spiral guide pillars 10 are located at the middle positions corresponding to the spiral grooves 9, so that the spiral pipe 8 can be stressed to move left-handed or right-handed when the spiral guide pillars 10 move;

as shown in fig. 8 and 9, an elastic component is fixedly connected to one end of the spiral feeding component, the elastic component includes a rotating ring 5, six telescopic rods 6 and a connecting spring 7, the six telescopic rods 6 are circumferentially disposed on an end surface of the rotating ring 5 away from the spiral tube 8, a rotating notch 12 is disposed at one end of the rotating ring 5 close to the spiral groove 9, two rotating spiral grooves 41 are circumferentially disposed on an inner circumferential surface of the rotating notch 12, two rotating guide pillars 40 are correspondingly disposed at one end of the spiral tube 8 close to the rotating spiral grooves 41, the rotating guide pillars 40 are slidably fitted in the rotating spiral grooves 41, the rotating guide pillars 40 are located in the middle of the rotating spiral grooves 41 when the torsion spring 13 is not under stress, so that the rotating ring 5 can move towards a direction close to the clamping block 3 or away from the clamping block 3, one end of the telescopic rod 6 away from the rotating ring 5 is fixedly connected to the clamping block 3, connecting spring 7 cover is established in the outside of telescopic link 6 and connecting spring 7's both ends respectively with grip block 3 and telescopic link 6 fixed connection, elastic component keeps away from the one end fixedly connected with grip block 3 of spiral feeding subassembly, connecting spring 7's effect lies in providing not equidimension pressure through connecting spring 7's compression deformation and holds the effort between grip block 3 and white automobile body anchor clamps base 38, still be used for when switching base 1 and side case 2's inclination reduces simultaneously, the top pushes away telescopic link 6 and carries out length and resets, thereby make and remain the contact throughout between V type spiral chute 27 and the extrusion column 28, hold the effort for the elasticity pressure that increases elastic component can provide, as shown in figure 8, still can set up a set of telescopic link and connecting spring in the central point of grip block 3 and swivel becket 5.

As a preferred technical scheme of the invention: as shown in fig. 1 and 12, the front end face of the side box 2 has first mating holes 35 symmetrically formed therein, the upper guide bar 16 is slidably connected to the first mating holes 35, the rear end face of the side box 2 has second mating holes 36 symmetrically formed therein, the lower guide bar 14 is slidably connected to the second mating holes 36, horizontal connection blocks 37 are fixedly connected to the front and rear end faces of the two side boxes 30 at the same horizontal height, connection grooves for replacing carriers used by the white body fixture bases 38 are formed in the horizontal connection blocks 37, the horizontal connection blocks 37 are provided to increase a heavy horizontal location, so that the positioning between the carriers for placing the white body fixture bases 38 to be used and replaced and the switching bases 1 is more accurate, the replaced white body fixture bases 38 above the switching bases 1 can be smoothly pushed to the upper sides of the carriers for placing the same, and then the white body fixture bases 38 to be used are pushed from the carriers to the corresponding mounting positions on the switching bases 1.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

In summary, when the body-in-white clamp installed above the switching base 1 is switched, the body-in-white clamp base 38 to be used by the carrier is moved to the position in front of the first mating hole 35, and the carrier for placing the body-in-white clamp base 38 to be replaced is moved to the position in front of the second mating hole 36, so that the push rods in front of the two carriers are correspondingly inserted into the first mating hole 35 and the second mating hole 36, and the upper guide rod 16 and the lower guide rod 14 are pushed to move towards the inside of the installation cavity opening 34;

when the spiral guide posts 10 correspondingly mounted on the upper guide rod 16 and the lower guide rod 14 move along the corresponding spiral grooves 9, the spiral tube 8 rotates, so that the rotary guide post 40 rotates along with the spiral tube 8, the rotary ring 5 is forced to move under the matching action of the rotary guide post 40 and the rotary spiral groove 41, so that the rotary ring 5, the telescopic rod 6 and the clamping block 3 move towards the direction close to the torsion spring 13, the matching column 39 moves from the matching hole 4 of the clamping block 3, at the moment, the white body clamp base 38 and the clamping block 3 are separated from clamping matching, at the moment, the replaced white body clamp base 38 above the switching base 1 is pushed onto a carrier for placing the replaced white body clamp base 38, the white body clamp base 38 to be used is pushed to the corresponding position above the switching base 1, after the corresponding push rods of the two carriers move out from the corresponding first matching holes 35 and second matching holes 36, under the elastic action of the torsion spring 13, the spiral feeding assembly resets, the clamping block 3 moves to the previous position, at the clamping block 3 and the replaced white body clamp base 38 contact the side surface of the white body clamp base 38, and the matching holes 38 are inserted into the matching holes of the white body clamp base 38, and the matching clamp base 38, and the white clamp base 38 is quickly switched to complete the white body clamp base 38;

when the white body welding is carried out, in order to facilitate the operation of the welding robot, when the motor 31 is required to drive the switching base 1 and the side box 2 to incline together with the white body clamp base 38, the clamp and the white body above the switching base 1 and the side box 2, when the switching base 1 and the side box 2 start to incline from a horizontal angle with the ground, the extrusion disc 26 rotates along with the output shaft of the motor 31, the extrusion disc 26 moves towards the direction close to the side box 2 through the matching of the spline grooves of the spline housing 32 and the extrusion disc 26 under the guiding matching action of the V-shaped spiral chute 27 and the extrusion rollers 28 while the extrusion disc 26 rotates, so that the extrusion disc 26 pushes the extrusion ball 25, the extrusion ball 25 and the extrusion rod 24 push the middle ring 23 to move, the middle ring 23 drives the movable block 20 to move towards the direction far away from the output shaft of the motor 31, so that the upper guide rod 16 is pushed towards the direction far away from the center of the mounting cavity 34 under the matching action of the corresponding upper inclined block 21, the lower inclined block 22 and the lower inclined pushing column 19, the corresponding upper inclined block 14 moves towards the direction far away from the center of the mounting cavity 34, the lower inclined block 14 and the lower inclined guide rod 9 is connected with the rotating clamp 3 under the rotating action of the rotating spring 8, and the rotating clamp base 6, and the rotating of the rotating rod 6, and the rotating clamp of the rotating rod 6, and the rotating rod 3, and the rotating rod 6 are connected with the rotating clamp, and the rotating clamp in the rotating direction of the rotating clamp and the rotating rod 6, and the rotating direction of the rotating clamp and the rotating rod 6, therefore, when the base 1 and the side box 2 are switched to incline, the clamping pressure between the body-in-white clamp base 38 and the side box 2 is increased adaptively, so that the acting force at the joint of the matching hole 4 and the matching column 39 is reduced, and the situation that the matching hole 4 is pressed and deformed due to overlarge acting force borne by the matching hole 4 and the matching column 39 to influence the matching use precision of the matching hole 4 and the matching column 39 is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a many car shapes auto-change over device of automobile body welding, includes body-in-white anchor clamps base (38) that are used for carrying white body anchor clamps, carries out the switching base (1) of clamping location to body-in-white anchor clamps base (38), and the drive switches base (1) and carries out pivoted motor (31) for side machine case (30) of loading motor (31), its characterized in that: the two ends of the switching base (1) protrude upwards to form side boxes (2), mounting cavity openings (34) are formed in the side boxes (2), the opposite surfaces of the two side boxes (2) are provided with an even number of clamping blocks (3) in a sliding mode, the center of each clamping block (3) is provided with a matching hole (4), matching columns (39) are installed in the matching holes (4) in a matching mode, the matching columns (39) are symmetrically and fixedly connected to the two side surfaces of a white body clamp base (38), spline sleeves (32) are fixedly installed on output shafts of motors (31), extrusion discs (26) are connected onto key teeth of the spline sleeves (32) in a sliding mode, the outer peripheral surfaces of the extrusion discs (26) are symmetrically provided with an even number of V-shaped spiral chutes (27), fixed connecting rods (29) are arranged on the side surfaces of the side boxes (30) at intervals in the circumferential direction, one ends, far away from the side boxes (30), of the fixed connecting rods (29) are fixedly connected with extrusion rollers (28), the extrusion rollers (28) are in extrusion fit with the V-shaped spiral chutes (27), one ends, one end, far away from the side boxes (30), a lower extrusion component and an upper extrusion feeding component and a lower extrusion component are arranged on the inner side surface, and a lower extrusion feeding component are respectively connected with a lower extrusion feeding component, and a lower extrusion component in a sliding fit with the extrusion feeding component, and a lower extrusion component, which are arranged on the extrusion component respectively in sliding fit with the extrusion feeding component, one end of the elastic component far away from the spiral feeding component is fixedly connected with a clamping block (3); the extrusion assembly comprises a middle ring (23), an extrusion rod (24) and an extrusion ball head (25), the extrusion rod (24) penetrates through the inner wall of the side box (2), one end of the extrusion rod (24) is fixedly connected with the extrusion ball head (25), one end, far away from the extrusion ball head (25), of the extrusion rod (24) and located in the installation cavity opening (34) is fixedly connected with the middle ring (23), the extrusion assembly further comprises a movable block (20), an upper inclined block (21) and a lower inclined block (22), the upper inclined block (21) is fixedly connected to the upper surface of the movable block (20), the lower inclined block (22) is fixedly connected to the lower surface of the movable block (20) correspondingly, the upper pushing assembly comprises an upper guide rod (16), an upper guide rail (17) and an upper inclined pushing guide pillar (18), the upper guide rod (16) is connected to the inner portion of the upper guide rail (17) in a sliding mode, and the upper inclined pushing guide pillar (18) corresponding to the position of the upper inclined block (21) is arranged on the lower surface of the upper guide rod (16); the lower pushing and pressing assembly comprises a lower guide rod (14), a lower guide rail (15) and a lower inclined derivation column (19), the lower guide rod (14) is connected in the lower guide rail (15) in a sliding mode, and the lower inclined derivation column (19) corresponding to the lower inclined block (22) is arranged on the upper surface of the lower guide rod (14); the spiral feeding assembly comprises a spiral pipe (8), two spiral grooves (9) which are circumferentially arranged on the outer peripheral surface of the spiral pipe (8), spiral guide pillars (10), a retaining ring (11) and a torsion spring (13), wherein the spiral pipe (8) is rotatably arranged in an installation cavity opening (34), one end of the spiral pipe (8) is fixedly connected with the retaining ring (11), one end, far away from the spiral pipe (8), of the retaining ring (11) is sleeved with the torsion spring (13), the lower surface of an upper guide rod (16) and the upper surface of a lower guide rod (14) are fixedly connected with the spiral guide pillars (10) in corresponding positions, and each spiral guide pillar (10) is in sliding fit with the corresponding spiral groove (9); elastic component includes swivel becket (5), six telescopic links (6) and coupling spring (7), six telescopic links (6) circumference sets up on swivel becket (5) keeps away from the terminal surface of spiral pipe (8), the one end that swivel becket (5) are close to helicla flute (9) is equipped with rotation notch (12), the inner peripheral surface circumference of rotation notch (12) is equipped with two and rotates helicla flute (41), the one end correspondence that spiral pipe (8) are close to rotation helicla flute (41) is equipped with two and rotates guide pillar (40), rotate guide pillar (40) sliding fit in rotating helicla flute (41), the one end and grip block (3) fixed connection of swivel becket (5) are kept away from in telescopic link (6), coupling spring (7) cover is established in the outside of telescopic link (6) and the both ends of coupling spring (7) respectively with grip block (3) and telescopic link (6) fixed connection.

2. The vehicle body welding multi-vehicle-shaped switching device according to claim 1, characterized in that: first mating holes (35) have been seted up to the preceding terminal surface symmetry of side case (2), go up guide arm (16) sliding connection in first mating holes (35), second mating holes (36) have been seted up to the rear end face symmetry of side case (2), and lower guide arm (14) sliding connection is in second mating holes (36).

3. The vehicle body welding multi-vehicle-shaped switching device according to claim 1, characterized in that: two equal fixedly connected with horizontal connecting block (37) of terminal surface around side machine case (30), two horizontal connecting block (37) are located same level, set up the spread groove of changing the carrier that body-in-white anchor clamps base (38) used on horizontal connecting block (37).

4. The vehicle body welding multi-vehicle shape switching device according to claim 1, characterized in that: one end of the side case (30) close to the motor (31) is provided with a driving case shell (33), and the end surface of the driving case shell (33) is provided with a through hole corresponding to the extrusion rod (24).