CN210648946U

CN210648946U - Metal corrugated pipe welding device

Info

Publication number: CN210648946U
Application number: CN201921447583.7U
Authority: CN
Inventors: 马志荣; 马振豪; 陆文明
Original assignee: Wuxi Chuangfan Auto Parts Co Ltd
Current assignee: Wuxi Chuangfan Auto Parts Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-06-02
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses a metal corrugated pipe welding device, including the bellows, the wire mesh cover of cover setting on the bellows and cup joint the joint at wire mesh cover both ends, still include the base, two phase relatively set up the mount pad on the base, the mount frame of setting on the base, two phase relatively slide the automatic welding head on the mount frame, rotate the bearing roller that connects on two mount pad opposite side walls and drive the motor that the bearing roller rotated respectively, be equipped with the cavity in the base, be equipped with the drive assembly that drives two mount pads and slide relatively along the base axial in the cavity, all be equipped with the butt subassembly that is used for fixed joint on two bearing rollers, be equipped with the installation subassembly that is used for fixed automatic welding head on the mount; this welding set replaces the manpower fixed to the joint, and labour saving and time saving has improved welding efficiency.

Description

Metal corrugated pipe welding device

Technical Field

The utility model relates to a corrugated metal pipe processing equipment's technical field, in particular to corrugated metal pipe welding set.

Background

The metal corrugated pipe is a wave-like pipe with a regular shape, the commonly used metal corrugated pipe comprises carbon steel and stainless steel, and also comprises steel lining plastic, aluminum and the like, and when the metal corrugated pipe is used, the metal corrugated pipe and a joint are required to be subjected to circular girth welding sometimes.

At present, when a metal corrugated pipe is welded, manual operation is generally adopted, the wall of the metal corrugated pipe is thin, when the metal corrugated pipe is machined, a wire mesh sleeve 26 is generally sleeved on the corrugated pipe to increase the working stability of the corrugated pipe and avoid the corrugated pipe from being bent, then joints are welded at two ends of the wire mesh sleeve 26 so as to be connected with a pipeline, so that the joints and gaps between the joints need to be welded at two ends of the wire mesh sleeve 26, when the corrugated pipe is welded, a welder must press a workpiece with one hand to apply certain pressing force on the corrugated pipe and the joints, and weld the corrugated pipe and the joints with the other hand, otherwise, welding dislocation is caused, a manual welding mode is adopted, the labor intensity of the workers is greatly increased, and the welding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be applied to corrugated metal pipe's welding set, its advantage: this welding set replaces the manpower fixed to the joint, and labour saving and time saving has improved welding efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a be applied to welding set of corrugated metal pipe, includes the bellows, overlaps the screen cloth cover on the bellows and cup joints the joint at screen cloth cover both ends, still includes base, double-phase mount pad, the mount of setting on the base, double-phase automatic bonding tool on the mount that slides relatively, rotate respectively and connect the bearing roller on two mount pad relative lateral walls and drive bearing roller pivoted motor that set up on the base, be equipped with the cavity in the base, be equipped with the drive assembly that drives two mount pads and slide relatively along the base axial in the cavity, two all be equipped with the butt subassembly that is used for fixed joint on the bearing roller, be equipped with the installation component that is used for fixed automatic bonding tool on the mount.

According to the technical scheme, the distance between the two welding heads is adjusted to a proper position so as to be matched with corrugated pipes with different length sizes, and the welding heads are stably fixed on the fixed frame through the mounting assembly; secondly, sleeving the joints at two ends of the wire mesh sleeve, and enabling the two mounting seats to be close to each other by using the driving assembly so that the two carrier rollers are respectively inserted into the two joints; then fixing the joint on the carrier roller by using the abutting assembly; finally, two automatic welding heads are used for welding the two joints and the gaps at the two ends of the corrugated pipe, and in the welding process, a motor is used for driving a carrier roller to rotate so as to drive the joints to rotate, so that a silk screen sleeve is driven to rotate, and finally the all-round welding of the annular gaps between the joints and the silk screen sleeve is realized; adopt the welding set that above-mentioned structure constitutes, replace the manpower to bellows welded fastening, labour saving and time saving has improved welding efficiency.

The utility model discloses further set up to: drive assembly includes two relative slides at the first slide and the second slide of cavity diapire, sets up fixed block between first slide and second slide, rotates and sets up at the rotor plate of fixed block roof, rotate first branch and the second branch of being connected and set up the cylinder on the fixed block lateral wall with the rotor plate both ends, the piston rod of cylinder links to each other with the lateral wall of first slide, the extending direction of the piston rod of cylinder and the axial syntropy of base, the one end that rotor plate was kept away from to first branch and second branch rotates with the roof of first slide and second slide respectively and is connected, two the diapire of mount pad all is equipped with the sliding block and extends to in the cavity, two the sliding block respectively with the roof fixed connection of first slide and second slide, the roof of base is equipped with the opening that supplies the sliding block to slide along its width direction.

Through the technical scheme, the air cylinder is started to drive the first sliding seat to slide towards the direction of the fixed block, and the rotating plate is rotatably connected with the top wall of the fixed block, so that the angles between the first supporting rod and the rotating plate and between the second supporting rod and the rotating plate are gradually reduced, at the moment, the angle between the rotating plate and the fixed block is gradually reduced, and the second sliding seat is driven to slide towards the direction of the fixed block, so that the two mounting seats are driven to be close to each other, and finally, the carrier roller is inserted into the joint; this driving method, simple structure, convenient operation, the piston rod through the cylinder retract with stretch out, adjustable two distance between the mount pad to weld different length dimension's bellows, application scope is wide, has improved welding efficiency.

The utility model discloses further set up to: the butt subassembly includes the voussoir of two relative settings, sets up actuating lever on the voussoir end wall, articulates clamp and the locating pin of keeping away from voussoir one end at the actuating lever, the outer wall of bearing roller is equipped with relatively with voussoir matched with wedge groove, the groove depth dimension that the wedge groove is close to the mount pad is greater than the groove depth dimension near the joint, the lateral wall that the voussoir deviates from the wedge groove is established to and is connected interior rampart matched with arcwall, the outer wall of clamp is equipped with the through-hole, the outer wall equipartition of bearing roller is equipped with a plurality of locating holes, the locating pin is by outer to interior.

According to the technical scheme, the wedge block is pushed to move towards the joint by the driving rod, and the groove depth of the wedge-shaped groove close to the joint is smaller than that of the mounting seat, so that when the wedge block slides in the wedge-shaped groove, the distance between the side wall of the wedge block on the arc-shaped surface and the inner ring wall of the joint is gradually reduced, and the two wedge blocks can be abutted against the inner wall of the joint; secondly, rotating the hoop to enable the hoop to be attached to the circumferential outer wall of the carrier roller; then, the positioning pins are sequentially inserted into the through holes and the positioning holes from outside to inside, the clamp hoop can be stably fixed on the carrier roller, and the wedge block can be abutted against the inner ring wall of the joint; the side wall of the wedge block is designed to be an arc-shaped surface, so that the contact area between the side wall and the inner ring wall of the joint is increased, the stability of fixing the joint is improved, and the welding efficiency is further improved; this support tight mode, simple structure, convenient operation replaces manual fixed joint of manpower and bellows, has improved welding process's stability, has improved machining efficiency.

The utility model discloses further set up to: the fixing frame comprises two vertical rods which are oppositely arranged on the base, a guide rail which is arranged between the two vertical rods and is in the same direction with the length direction of the base, and two sliding blocks which are oppositely slid on the guide rail, and the two automatic welding heads are rotatably connected with the sliding blocks.

Through the technical scheme, the combination of the vertical rod and the guide rail has a supporting effect on the welding head, so that the two sliding blocks slide on the guide rail, and further, a worker can conveniently adjust the distance between the two automatic welding heads, and corrugated pipes with different length sizes can be conveniently welded; meanwhile, the automatic welding head is rotatably connected with the sliding block, so that a worker can conveniently adjust the position of the automatic welding head to align to a position needing welding, and the welding machine is convenient and practical.

The utility model discloses further set up to: the mounting assembly comprises a flange and a bolt, wherein the flange and the bolt are arranged on the side wall of the sliding block, the side wall of the flange is provided with a fixing hole, the side wall of the guide rail is provided with a plurality of threaded holes along the axial direction of the guide rail, and the bolt is inserted into the fixing hole and the threaded holes from outside to inside in sequence.

Through the technical scheme, the bolt is inserted into the fixing hole, the bolt is rotated into the threaded hole, and then the flange can be fixed on the side wall of the guide rail, so that the slide block is fixed, and the stability of the welding process is improved.

The utility model discloses further set up to: the roof of base is equipped with the safety cover, the lateral wall of safety cover slides along its direction of height and is equipped with the guard gate, the lateral wall of guard gate articulates there are two relative trips, the outer wall of safety cover is along being equipped with relatively with trip matched with buckle.

Through the technical scheme, the protective cover plays a role in protection, and the electric arc generated during welding is prevented from causing harm to workers; after the welding is finished, the protective door is pulled upwards to a proper height, the clamping hook is inserted into the buckling ring, and the machined finished product can be taken out by the worker at the moment.

The utility model discloses further set up to: two opposite guide rods are arranged in the cavity, and guide blocks sliding on the guide rods are arranged on the bottom walls of the first sliding seat and the second sliding seat.

Through above-mentioned technical scheme, the cooperation of guide bar and guide block plays spacing and the effect of direction to the removal of first slide and second slide, and then has improved the stability of first slide and the second slide process of sliding.

The utility model discloses further set up to: and a rubber pad is arranged on the side wall of the wedge block, which is attached to the joint.

Through above-mentioned technical scheme, the setting of rubber pad has strengthened the compactness of laminating between voussoir and the ring wall in the joint, has improved the fixed stability of butt joint.

To sum up, the utility model discloses following beneficial effect has:

1. firstly, adjusting the distance between two welding heads to a proper position, and then stably fixing the welding heads on a fixed frame through an installation assembly; secondly, the two mounting seats are close to each other by using a driving assembly, so that the two carrier rollers are respectively inserted into the two joints; then fixing the joint on the carrier roller by using the abutting assembly; finally, two automatic welding heads are used for welding the two joints and the gaps at the two ends of the corrugated pipe, and in the welding process, the motor is started to drive the carrier roller to rotate and further drive the two corrugated pipes to rotate, so that the all-round welding of the two ends of the corrugated pipe is realized; the welding device formed by the structure replaces manpower to weld and fix the corrugated pipe, saves time and labor and improves the welding efficiency;

2. firstly, a driving rod is utilized to push a wedge block to move towards a joint, and as the depth of a groove of a wedge-shaped groove close to the joint is smaller than that of a groove close to a mounting seat, the distance between the side wall of the wedge block on an arc-shaped surface and the inner ring wall of the joint is gradually reduced when the wedge block slides in the wedge-shaped groove, so that the two wedge blocks can be abutted against the inner wall of the joint; secondly, rotating the hoop to enable the hoop to be attached to the circumferential outer wall of the carrier roller; then, the positioning pins are sequentially inserted into the through holes and the positioning holes from outside to inside, the clamp can be fixed on the carrier roller, and the wedge block can be abutted against the inner ring wall of the joint; the abutting mode is simple in structure and convenient to operate, manual fixing of the joint and the corrugated pipe is replaced, stability in the welding process is improved, and machining efficiency is improved;

3. the rubber pad is arranged, so that the tightness of the fit between the wedge block and the inner ring wall of the joint is enhanced, and the stability of fixing the joint is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural view for embodying the concealed protective cover in the present embodiment.

Fig. 3 is a schematic view of the internal structure of the base for embodying the present embodiment.

Fig. 4 is a schematic structural view for embodying the driving assembly in the present embodiment.

Fig. 5 is a partial sectional structural view for embodying a in fig. 2.

Figure 6 is a schematic structural view for embodying an abutment assembly.

Reference numerals: 1. a base; 2. a bellows; 3. a joint; 4. a mounting seat; 5. a fixed mount; 51. a vertical rod; 52. a guide rail; 53. a slider; 6. an automatic welding head; 7. a carrier roller; 8. a motor; 9. a cavity; 10. a drive assembly; 101. a first slider; 102. a second slide carriage; 103. a fixed block; 104. a rotating plate; 105. a first support bar; 106. a second support bar; 107. a cylinder; 11. an abutment assembly; 111. a wedge block; 112. a drive rod; 113. clamping a hoop; 114. positioning pins; 12. mounting the component; 121. a flange; 122. a bolt; 13. an opening; 14. a wedge-shaped groove; 15. a through hole; 16. positioning holes; 17. a fixing hole; 18. a threaded hole; 19. a protective cover; 20. a protective door; 21. a hook is clamped; 22. a sliding block; 23. a guide bar; 24. a guide block; 25. a rubber pad; 26. a wire mesh sleeve; 27. a retaining ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a metal corrugated pipe welding device, referring to fig. 1, comprises a rectangular base 1.

Referring to fig. 1, a corrugated pipe 2 (fig. 6) is arranged on a rectangular base 1, a wire mesh sleeve 26 is sleeved on the corrugated pipe 2, and two ends of the wire mesh sleeve 26 are sleeved with annular connectors 3.

Referring to fig. 1 and 2, a fixing frame 5 is arranged on a base 1, two opposite welding heads are arranged on the fixing frame 5 in a sliding manner, the welding heads are automatic welding heads 3, a mounting assembly 12 for fixing the welding heads is arranged on the fixing frame 5, two opposite mounting seats 4 are arranged on the base 1 along the length direction of the base, carrier rollers 7 are arranged on opposite side walls of the two mounting seats 4 in a rotating manner, a motor 8 is fixed on a side wall of the two mounting seats 4, the motor 8 drives the carrier rollers 7 to rotate, abutting assemblies 11 for fixing the joints 3 are arranged on the side walls of the two carrier rollers 7, a cavity 9 (fig. 3) is arranged in the base 1, and a driving assembly 10 (fig. 3) for driving the two mounting seats 4 to relatively slide along the length direction of the base; firstly, adjusting the distance between two automatic welding heads 3 to a proper position, and stably fixing the automatic welding heads 3 on a fixed frame 5 through a mounting assembly 12; the two mounting seats 4 are brought close to each other by means of a drive assembly 10 (fig. 3) so that the two idlers 7 are inserted into the two joints 3, respectively; then fixing the joint 3 on the carrier roller 7 by using the abutting assembly 11; finally, two automatic welding heads 6 are used for welding the two joints 3 and the gaps at the two ends of the screen sleeve 26, and in the welding process, the motor 8 is used for driving the carrier roller 7 to rotate, so that the screen sleeve 26 is driven to rotate, and finally the all-round welding of the two ends of the screen sleeve 26 is realized; adopt the welding set that above-mentioned structure constitutes, replace the manpower to bellows 2 welded fastening, labour saving and time saving has improved welding efficiency.

Referring to fig. 1, a protective cover 19 is arranged on the top wall of a base 1, a protective door 20 is slidably arranged on the side wall of the protective cover 19 along the height direction of the protective door, two opposite hooks 21 are hinged on the side wall of the protective door 20 along the length direction of the protective door, and a retaining ring 27 matched with the hooks 21 is arranged on the outer wall of the protective cover 19; because electric arcs can be generated during welding, the protective cover 19 plays a role in protection, and harm to workers is avoided; after the welding is completed, the protective door 20 is pulled up to a proper height, and the hook 21 is inserted into the retaining ring 27, so that the worker can take out the finished product.

Referring to fig. 2, the fixed frame 5 comprises two vertical rods 51 oppositely arranged on the base 1, a guide rail 52 arranged between the two vertical rods 51 and in the same direction as the length direction of the base 1, and two sliding blocks 53 oppositely sliding on the guide rail 52, and the two automatic welding heads 6 are respectively rotatably connected with the side walls of the two sliding blocks 53 departing from the guide rail 52, so that the positions of the automatic welding heads 6 can be conveniently adjusted to align the positions to be welded, and the welding machine is convenient and practical; the matching of the guide rail 52 and the sliding block 53 facilitates the adjustment of the distance between the two automatic welding heads 6 by the worker, so that the corrugated pipes 2 with different length and size can be welded conveniently, and the application range is wide.

Referring to fig. 2, the mounting assembly 12 includes a flange 121 and bolts 122 disposed on the two sliders 53 and extending outward away from the side walls, fixing holes 17 for the bolts 122 to pass through are disposed on the side walls of the flange 121, and a plurality of threaded holes 18 corresponding to the fixing holes 17 are uniformly disposed along the length direction of the side walls of the guide rail 52; the bolts 122 are inserted into the fixing holes 17 and the threaded holes 18 from outside to inside in sequence, so that the sliding blocks 53 can be fixed on the guide rail 52, the stability of the welding process of the automatic welding head 6 is improved, and the machining efficiency is improved.

Referring to fig. 3 and 4, the driving assembly 10 includes two first sliding seats 101 and two second sliding seats 102 sliding relatively in the cavity 9, a fixed block 103 fixed on the bottom wall of the cavity 9 and located between the first sliding seats 101 and the second sliding seats 102, a rotating plate 104 rotating on the top wall of the fixed block 103 and having a diamond shape, a first supporting rod 105 and a second supporting rod 106 rotatably connected with both ends of the rotating plate 104, and an air cylinder 107 arranged on the side wall of the fixed block 103, a piston rod of the air cylinder 107 is fixed on the side wall of the first sliding seat 101 facing the fixed block 103, an extending direction of the piston rod of the air cylinder 107 is the same as the length direction of the base 1, one end of the first supporting rod 105 far from the rotating plate 104 is rotatably connected with the top wall of the first sliding seat 101 near one end of the fixed block 103, one end of the second supporting rod 106 far from the rotating plate 104 is rotatably connected with the top wall of the second sliding seat 102 far from the fixed block 103, the, the top ends of the two sliding blocks 22 extend out of the top wall of the base 1 and are fixedly connected with the bottom walls of the two mounting seats 4, and the top wall of the base 1 is oppositely provided with openings 13 for the sliding blocks 22 to slide along the length direction; starting the air cylinder 107 to drive the first sliding seat 101 to slide towards the direction of the fixed block 103, wherein the rotating plate 104 is rotatably connected with the top wall of the fixed block 103, so that the angles between the first supporting rod 105, the second supporting rod 106 and the rotating plate 104 are gradually reduced, and at the moment, the angle between the rotating plate 104 and the fixed block 103 is gradually reduced, so that the second sliding seat 102 is driven to slide towards the direction of the fixed block 103, and the two mounting seats 4 are driven to approach each other, and finally, the carrier roller 7 is inserted into the joint 3; this drive mode, simple structure, convenient operation, the piston rod through cylinder 107 contracts back and stretches out, distance between two adjustable mount pads 4 to the silk screen cover 26 to different length size welds, and application scope is wide, has improved welding efficiency.

Referring to fig. 3 and 4, two guide rods 23 arranged in parallel are arranged in the cavity 9, the length direction of the guide rods 23 is the same as the length direction of the base 1, the two guide rods 23 penetrate through the fixing block 103, two ends of the two guide rods 23 are fixed on the inner wall of the cavity 9, and four corners of the top walls of the first sliding seat 101 and the second sliding seat 102 are respectively provided with a guide block 24 sliding on the guide rods 23; the cooperation of guide bar 23 and guide block 24 plays the limiting displacement to first slide 101 and second slide 102, and then has improved the stability of first slide 101 and the process of sliding of second slide 102.

Referring to fig. 5 and 6, the side wall of the idler roller 7 is provided with two opposite wedge grooves 14, the abutting assembly 11 includes a wedge 111 sliding in the two wedge grooves 14, an L-shaped driving rod 112 disposed on the end wall of the wedge 111, a hoop 113 hinged at one end of the driving rod 112 away from the wedge 111, and a positioning pin 114, the hoop 113 is disposed in an arc shape to match the outer wall of the idler roller 7, the outer wall of the idler roller 7 is provided with the wedge grooves 14 for sliding of the wedge 111, the groove depth of the wedge groove 14 gradually decreases along the length direction of the idler roller 7, the groove depth of the wedge groove 14 opposite to the notch thereof is an inclined surface matched with the wedge 111, the groove depth of the wedge groove 14 near one end of the mounting seat 4 is larger than the groove depth near one end of the joint 3, the side wall of the wedge 111 departing from the wedge groove 14 is an arc surface matched with the inner annular wall of the joint 3, the side wall, a plurality of positioning holes 16 matched with the positioning pins 114 are uniformly distributed on the outer wall of the carrier roller 7; when the wedge block is installed, the driving rod 112 is used for pushing the wedge block 111 to move towards the joint 3, and as the depth of the wedge groove 14 close to the joint 3 is smaller than that of the wedge groove close to the installation seat 4, and further when the wedge block 111 slides in the wedge groove 14, the distance between the side wall of the wedge block 111 on the arc-shaped surface and the inner ring wall of the joint 3 is gradually reduced, so that the two wedge blocks can be abutted against the inner wall of the joint 3; secondly, rotating the hoop 113 to enable the hoop 113 to be attached to the circumferential outer wall of the carrier roller 7; then, the positioning pin 114 is inserted into the through hole 15 and the positioning hole 16 in sequence from outside to inside, so that the clamp 113 can be stably fixed on the carrier roller 7, and the wedge block 111 can be tightly abutted against the inner annular wall of the joint 3; the side wall of the wedge block 111 is designed to be an arc-shaped surface, so that the contact area of the wedge block and the inner annular wall of the joint 3 is increased, the stability of fixing the joint 3 is improved, and the welding efficiency is further improved; this support tight mode, simple structure, convenient operation replaces manual fixed joint 3 of manpower and bellows 2, has improved welding process's stability, has improved machining efficiency.

Referring to fig. 6, a rubber pad 25 is arranged on the inner wall of the wedge 111, which is attached to the inner annular wall of the joint 3; the rubber pad 25 enhances the tightness of the fit between the wedge 111 and the inner annular wall of the joint 3, thereby improving the stability of the fixation of the joint 3.

The working process is as follows: firstly, sliding two automatic welding heads 6 to proper positions, and penetrating bolts 122 through fixing holes 17 and rotating the bolts into threaded holes 18 so as to fix the automatic welding heads 6 to the proper positions; secondly, sleeving the joint 3 at two ends of the corrugated pipe 2, starting the air cylinder 107 at the same time, enabling a piston rod of the air cylinder 107 to retract, further enabling the first sliding seat 101 and the second sliding seat 102 to approach each other, and further driving the two mounting seats 4 to approach each other, so that the carrier roller 7 is inserted into the joint 3; then, the driving rod 112 is pushed, so that the wedge blocks 111 slide along the length direction of the wedge-shaped groove 14, and then the two wedge blocks 111 can be abutted against the inner annular wall of the joint 3; finally, the hoop 113 is rotated, the hoop 113 is attached to the outer wall of the carrier roller 7, the positioning pins 114 are sequentially inserted into the through holes 15 and the positioning holes 16 from outside to inside, the hoop 113 can be fixed on the outer wall of the carrier roller 7, the wedge blocks 111 can be abutted against the inner wall of the joint 3, fixing of the joint 3 is finally achieved, the gap between the joint 3 and the screen sleeve 26 can be welded through the automatic welding head 6, in the welding process, the motor 8 is started, the carrier roller 7 is driven to rotate, the corrugated pipe 2 is driven to rotate, and all-round welding of the gap is finally achieved.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a metal bellows welding set, includes bellows (2), the silk screen cover (26) of cover on bellows (2) and cup joints joint (3) at silk screen cover (26) both ends, its characterized in that: the welding device is characterized by further comprising a base (1), two relatively-arranged mounting seats (4) on the base (1), a fixing frame (5) arranged on the base (1), two relatively-sliding automatic welding heads (6) on the fixing frame (5), carrier rollers (7) connected to opposite side walls of the two mounting seats (4) in a rotating mode and a motor (8) driving the carrier rollers (7) to rotate, wherein a cavity (9) is formed in the base (1), a driving assembly (10) driving the two mounting seats (4) to slide relatively along the axial direction of the base (1) is arranged in the cavity (9), two abutting assemblies (11) used for fixing joints (3) are arranged on the carrier rollers (7), and a mounting assembly (12) used for fixing the automatic welding heads (6) is arranged on the fixing frame (5).

2. A metal bellows welding device according to claim 1, wherein: the driving assembly (10) comprises a first sliding seat (101) and a second sliding seat (102) which relatively slide on the inner bottom wall of the cavity (9), a fixing block (103) arranged between the first sliding seat (101) and the second sliding seat (102), a rotating plate (104) rotatably arranged on the top wall of the fixing block (103), a first supporting rod (105) and a second supporting rod (106) which are rotatably connected with the two ends of the rotating plate (104) and an air cylinder (107) arranged on the side wall of the fixing block (103), wherein a piston rod of the air cylinder (107) is connected with the side wall of the first sliding seat (101), the extending direction of the piston rod of the air cylinder (107) is the same as the axial direction of the base (1), one ends, far away from the rotating plate (104), of the first supporting rod (105) and the second supporting rod (106) are respectively rotatably connected with the top walls of the first sliding seat (101) and the second sliding seat (102), the bottom walls of the two mounting seats (4) are respectively provided with a sliding block (22) which extends into the cavity, two sliding block (22) respectively with the roof fixed connection of first slide (101) and second slide (102), the roof of base (1) is equipped with opening (13) that supplies sliding block (22) to slide along its width direction.

3. A metal bellows welding device according to claim 1, wherein: butt subassembly (11) including two relative voussoir (111) that set up, set up actuating lever (112) on voussoir (111) end wall, articulate clamp (113) and locating pin (114) of keeping away from voussoir (111) one end at actuating lever (112), the outer wall of bearing roller (7) is equipped with relatively wedge groove (14) with voussoir (111) matched with, the groove depth dimension that wedge groove (14) are close to mount pad (4) is greater than the groove depth dimension that is close to joint (3), the lateral wall that voussoir (111) deviate from wedge groove (14) is established to and is connected (3) inner ring wall matched with arcwall face, the outer wall of clamp (113) is equipped with through-hole (15), the outer wall equipartition of bearing roller (7) is equipped with a plurality of locating holes (16), locating pin (114) are by outer to interior insert in proper order in through-hole (15.

4. A metal bellows welding device according to claim 1, wherein: the fixing frame (5) comprises two vertical rods (51) oppositely arranged on the base (1), a guide rail (52) arranged between the two vertical rods (51) and in the same direction with the length direction of the base (1), and two sliding blocks (53) oppositely sliding on the guide rail (52), and the automatic welding head (6) is rotatably connected with the sliding blocks (53).

5. A metal bellows welding device according to claim 4, wherein: the mounting assembly (12) comprises a flange (121) and a bolt (122) which are arranged on the side wall of the sliding block (53), wherein the side wall of the flange (121) is provided with a fixing hole (17), the side wall of the guide rail (52) is uniformly provided with a plurality of threaded holes (18) along the axial direction of the guide rail, and the bolt (122) is sequentially inserted into the fixing hole (17) and the threaded holes (18) from outside to inside.

6. A metal bellows welding device according to claim 1, wherein: the roof of base (1) is equipped with safety cover (19), the lateral wall of safety cover (19) slides along its direction of height and is equipped with guard gate (20), the lateral wall of guard gate (20) articulates there are two relative trip (21), the outer wall of safety cover (19) is equipped with along relative with trip (21) matched with buckle (27).

7. A metal bellows welding device according to claim 2, wherein: two opposite guide rods (23) are arranged in the cavity (9), and guide blocks (24) sliding on the guide rods (23) are arranged on the bottom walls of the first sliding seat (101) and the second sliding seat (102).

8. A metal bellows welding device according to claim 3, wherein: and a rubber pad (25) is arranged on the side wall, which is attached to the wedge block (111) and the joint (3), of the wedge block.