CN211804317U

CN211804317U - Full-automatic pipe welding head

Info

Publication number: CN211804317U
Application number: CN201922246475.XU
Authority: CN
Inventors: 张小君; 杨秋龙; 缪海卫
Original assignee: Omni Automation Technology Suzhou Co ltd
Current assignee: Omni Automation Technology Suzhou Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-30
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a be applied to full-automatic pipe welding aircraft nose that pipe fitting welding field was used, its structure includes clamping device, transmission system, rotating system and the built-in wire feeding system who has the wire reel, transmission system's driving motor realizes the rotary drive operation through the carousel of drive gear drive linkage ring gear rotation system, arc length horizontal swing device is installed to the opposite side of carousel, water and electricity gas assembly and the support that send of being linked together with wire feeding system, arc length horizontal swing device is connected with welding torch device and realizes the displacement drive operation to welding torch device, clamping device and rotating system are connected respectively in transmission system's both sides and are worn to establish formation pipe fitting along the axis of carousel and are put the position. The structure setting of the device has realized the integration of structure and the reduction of volume, has guaranteed operation application scope, has promoted welding operation's stability and has realized, utilizes the linkage ring gear to guarantee the equilibrium and the rotation stationarity of drive effort simultaneously, provides the guarantee for circumference welding quality uniformity.

Description

Full-automatic pipe welding head

Technical Field

The utility model relates to a pipe fitting welding field uses full-automatic pipe welding aircraft nose.

Background

The pipe welding technology is a common connecting means in mechanical production, and generally people perform pre-positioning spot welding operation on a pipe to be welded, then place the pipe subjected to spot welding on a positioning device, and further perform circumferential welding on the pipe by using a corresponding welding device, so that stable connecting operation is completed. In the welding process of industrial manufacturing and installation, there are a lot of actual situations that require full position, namely, the situation that the workpiece to be welded cannot rotate. At this moment, the conventional fixed welding device is difficult to perform welding operation on the fixed welding device, the circumferential welding operation needs to be realized through the rotation of a welding gun, but under the action of a welding visual blind area, a worker is difficult to guarantee the welding quality, and the stability of the welding operation and the consistency of the welding quality of workpieces are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide an effectively guarantee welding quality's full-automatic pipe welding aircraft nose.

The utility model provides a technical scheme that its technical problem adopted is:

full-automatic pipe welding machine head, including clamping device, transmission system, rotary system and the built-in wire feed system who has the wire reel, transmission system includes driving motor, and drive gear and coaxial cover are located the linkage ring gear that the pipe fitting placed the position, driving motor carries out rotation operation along the axis through drive gear drive linkage ring gear, rotary system's carousel coaxial coupling is in one side of ring gear and carries out synchronous motion thereupon, arc length yaw device, water and electricity gas assembly and the support of sending a silk that is linked together with wire feed system are installed to the opposite side of carousel, arc length yaw device is connected with the welding torch device and realizes the displacement drive operation to the welding torch device, the welding torch device is including the shunt, ceramic nozzle that dispose in the welding torch, be used for tungsten utmost point clamp that the tungsten utmost point is fixed and with the water and electricity pipe assembly of water and electricity gas assembly intercommunication, water and electricity pipe assembly realizes through water and electricity gas, And the clamping device and the rotating system are respectively connected to two sides of the transmission system and penetrate along the central axis of the turntable to form a pipe placing position, and the clamping device is used for realizing the positioning operation of the pipe to be welded at the pipe placing position.

The welding head carries out integrated connection of the structure on the clamping device, the transmission system and the rotating system, and then a pipe fitting placing position is formed. During application, the clamping device positions the pipe to be welded in the pipe placement location so that its relative position to the drive system and the rotating system is also fixed. Because the clamping device, the transmission system and the rotating system are fixedly connected in relative positions, when the clamping device clamps and positions a pipe to be welded, the transmission system and the rotating system are also positioned, and the rotating disc provided with the welding torch device also realizes the rotating operation which is centered with the axis of the pipe under the action of the transmission system, so that the circumferential stable welding operation is realized, the welding quality is ensured, meanwhile, the integration of the structure realizes the reduction of the volume, and the application range of the device is ensured.

The welding torch device is communicated with external resources through the water, electricity and gas assembly, and therefore stable realization of welding operation is guaranteed.

Furthermore, the rotating system and the transmission system are used for opening a welding inlet communicated with the pipe welding position in the opening direction of the clamp system.

Furthermore, the clamping device comprises two clamping pieces, an adjusting screw rod, a groove plate, a cover plate and an adjusting handle which are oppositely arranged, the groove plate and the cover plate are surrounded to form a positioning intermediate layer for installing the adjusting screw rod, the middle part and two ends of the positioning intermediate layer are respectively provided with a positioning slide block and an end part limiting block for the adjusting screw rod to penetrate through, the positioning slide block and the end part limiting blocks respectively arranged at two sides are penetrated through in the direction perpendicular to the axis direction of the adjusting screw rod and are parallel to the adjusting long hole of the groove plate in the same direction, the end part of the adjusting screw rod penetrating through the end part limiting block is connected with the adjusting screw rod through a thread, two sides of the adjusting screw rod of the positioning slide block are respectively provided with a positioning block, the handle and the clamping pieces are respectively arranged at two sides of the adjusting screw rod along the arranging direction of the adjusting long hole, one end of the clamping piece symmetrically arranged on the adjusting screw rod is provided, the other end is oppositely provided with a clamping end the inner surface of which is matched with the radian of the outer diameter of the pipe fitting, the end part of the handle close to the adjusting screw rod is hinged with a handle connecting end of a hinged rotating block, the handle connecting end and the hinging shaft of the hinging rotating block are longitudinal hinging shafts, the end part of the clamping piece provided with the driving hole position extends to form a handle control driving end, the handle control driving end respectively realizes the hinging operation with the handle connecting end and the other end of the hinging rotating block by taking the longitudinal hinging shaft as an axis, the connecting articulated shaft of the handle control driving end is a transverse articulated shaft which is parallelly arranged on two sides of the longitudinal articulated shaft, the cover plate is respectively provided with a longitudinal limiting through hole and a transverse limiting through hole along the directions parallel to the adjusting long hole and vertical to the long hole, the longitudinal hinged shaft and the transverse hinged shaft are respectively penetrated in the directions and pass through the longitudinal limiting through hole and the transverse limiting through hole and realize reciprocating movement along the axes of the longitudinal limiting through hole and the transverse limiting through hole.

Furthermore, the adjusting long hole of the positioning sliding block is provided with an installation inlet matched with the outer diameter of the adjusting screw rod towards the cover plate, and the widths of the positioning sliding block and the end limiting block are matched with the width of the positioning middle layer.

Furthermore, the clamping end comprises an outer clamp and an inner clamp, the inner clamp is detachably sleeved and connected with the outer clamp, the inner clamp which is oppositely arranged surrounds a small-diameter clamping position with a smaller surrounding inner diameter, and the outer clamp which is oppositely arranged surrounds a large-diameter clamping position with a larger surrounding inner diameter.

Further, a safety clutch is arranged between a driving motor and a transmission gear of the transmission system. And a plurality of conical set screws for realizing clutch force adjustment are circumferentially arranged on the safety clutch.

Further, the wire feeding system is installed on the rotary table and comprises an integrated wire feeder and a wire coil box for installing a wire coil, and the integrated wire feeder is used for enabling welding wires in the wire coil box to reach a wire feeding nozzle of the wire feeding support along a wire feeding pipe.

Further, the arc length horizontal swinging device realizes the driving operation of the welding device through a connecting plate, the welding torch device and the wire feeding bracket are arranged at one end of the connecting plate, and the other end of the welding torch device and the wire feeding bracket are connected with a position controller of the arc length horizontal swinging device.

The utility model has the advantages that:

1. due to the structural arrangement of the device, structural integration and volume reduction are realized, the operation application range is ensured, the stability of welding operation is improved, meanwhile, the balance and the rotation stability of driving acting force are ensured by utilizing the driving effect of the linkage inner gear ring, the rotational inertia is reduced, the phenomenon of driving jamming is avoided in a high-temperature environment, the operation quality and the expansion of the device application environment are ensured, and the guarantee is provided for the consistency of circumferential welding quality;

2. due to the structural arrangement of the clamp device, the operation application range and the pipe fitting positioning quality are improved, and the application range of the welding head and the stable realization of the circumferential welding operation are ensured;

3. the relative relation between the wire feeding system and the rotary table further realizes the integration of the device structure, improves the matching effect of the welding wire and the welding operation, ensures the welding quality and avoids the influence of circumferential surrounding on the position of the welding wire;

4. the wire feeding support and the welding torch device are arranged, so that synchronous displacement operation can be realized under the action of the arc length transverse swing device, the stability of the matching relation between the welding torch and the welding wire is improved, the driving efficiency is improved, high-quality welding adjustment is easier to realize, and the welding quality is ensured.

Drawings

Fig. 1 is a schematic perspective view of a fully automatic pipe welding head according to the present invention;

FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;

FIG. 3 is an enlarged view of the structure of the area B in FIG. 1;

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a top view of FIG. 1;

FIG. 6 is a front view of the transmission system of the present invention;

fig. 7 is a schematic perspective view of the clamping device of the present invention;

FIG. 8 is a schematic view of the internal connection structure of the clamping device of the present invention;

FIG. 9 is an enlarged view of the structure of the area C in FIG. 8;

FIG. 10 is an enlarged view of the structure of region D in FIG. 8;

labeled as: 1. a welding torch assembly; 11. a hydro-electric tube assembly; 12. adjusting a knob; 13. a jacket; 2. an arc length yaw device; 21. a slide base; 22. matching with the sliding block; 23. a support; 24. a position controller; 25. a connecting plate; 26. an insulating block; 3. a wire feeding integrated machine; 31. a cartridge for the filament; 32. a wire feeding support; 321. a small shaft; 322. a wire feeding frame; 323. a clamping block; 324. a wire feeding nozzle; 4. a turntable; 5. a gear transmission structure; 51. linking the inner gear ring; 6. a drive motor; 7. a clamping device; 71. a clamp; 711. an outer clamp; 712. an inner clamp; 713. a driving hole site; 72. a cover plate; 721. a longitudinal limiting through hole; 722. a transverse limiting through hole; 73. a groove plate; 731. positioning the sliding block; 732. an end limiting block; 74. adjusting the screw rod; 741. adjusting a knob; 742. positioning blocks; 743. the clamping piece is hinged; 75. a handle; 751. hinging a rotating block; 752. a longitudinal hinge axis; 753. and transverse hinged shafts.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

The welding head structurally comprises a clamping device 7, a transmission system and a rotating system which are sequentially arranged as shown in 1-5, and surrounds to form a coaxial pipe placing position, so that the uniformity of the relative position relation between the positioning pipe and the welding operation of the clamping device 7 is guaranteed. The rotating system and the transmission system are used for opening a welding inlet communicated with a pipe welding position in the direction of a clamping opening of the clamping device 7, and the welding inlet is used as a placing inlet of the pipe, so that the size of the welding inlet meets the threading requirement of the operable pipe, namely the welding inlet is larger than the outer diameter of the pipe to be welded. Then, the transmission system is utilized to realize circumferential rotation operation of the relative pipe fitting by a rotating system provided with a welding torch device, a water, electricity and gas assembly and a wire feeding system, so that the automatic circumferential rotation welding operation of a welding head is realized, the automatic circumferential welding effect is improved, the matching requirement on the pipe fitting is further reduced, the operation application range is improved, and the welding quality is ensured.

The clamping device 7 is constructed as shown in fig. 7 and 8, and performs clamping and positioning operations on the pipe to be welded through clamping ends of the clamping members 71 which are oppositely arranged. The inner surface of the clamping end is matched with the outer diameter radian of the clamping pipe fitting, so that the two sides of the pipe fitting are clamped and positioned by the clamping end, the inner surface of the opposite clamping end is respectively arranged at the two ends of the diameter of the pipe fitting, the circle center of the arc-shaped inner surface is positioned on the axis of the pipe fitting, and the force application effect on the pipe fitting is ensured. To ensure the reach of the clamping device 7, the clamping end comprises an outer clamp 711 and an inner clamp 712. The inner clamp 712 can be detachably connected to the inner surface of the outer clamp 711 through a screw, so that a small-caliber clamping position with a small surrounding inner diameter is formed by surrounding the inner clamp 712 arranged oppositely, and the positioning effect of the small caliber is further met. When the outer diameter of the pipe to be welded is larger, the worker can detach and separate the inner clamp 712 on the outer clamp 711, so that the opposite outer clamp 711 surrounds and forms a large-diameter clamping position with a larger surrounding inner diameter. The small pipe diameter clamping position can be suitable for the pipe fitting clamping and positioning operation with the pipe diameter of phi 120-phi 180, and the large pipe diameter clamping position formed by the surrounding of the outer clamp 711 can be suitable for the pipe fitting clamping and positioning operation with the pipe diameter of phi 180-phi 230, so that the use requirement is met. The adaptation pipe diameter of this outer tong 711 and interior clamp 712 can carry out the change of adaptation scope through the adjustment of structure thickness, and the staff can dispose by oneself, also can carry out the setting of multilayer clamp simultaneously, further promotes the application effect. As shown in fig. 7, the inner clamp 712 is a detachable arc-shaped block structure, and one end of the outer clamp 711 of the clamp 74 is connected to a connecting member and the other end is sleeved and hinged to the adjusting screw 74. In order to ensure the relative rotation effect of the driving clamp 71 and the adjusting screw 74, the clamp 71 is symmetrically hinged to the end of the adjusting screw 74 through a clamp hinge shaft 743, and a driving hole 713 is formed along the direction perpendicular to the clamp hinge shaft 743. As shown in fig. 8, the driving hole portion 713 has a width in a direction parallel to the hinge shaft 743 of the clip matching the diameter of the adjustment screw 74 and a length greater than the diameter of the adjustment screw 74, thereby satisfying a relative rotation operation of the clip 71 with respect to the adjustment screw 74 and the hinge shaft 743 of the clip at a certain angle.

The groove plate 73 and the cover plate 72 are connected in a parallel alignment and enclose a positioning intermediate layer for mounting the adjusting screw 74. The middle part and the two ends of the positioning middle layer are respectively provided with a positioning slide block 731 and an end limiting block 732 for the adjusting screw rod 74 to penetrate through. In order to ensure the structural connection strength, the widths of the positioning sliding block 731 and the end limiting block 732 are matched with the width of the positioning middle layer. The positioning slider 731 and the end limiting blocks 732 respectively arranged on both sides are penetrated in the direction perpendicular to the axial direction of the adjusting screw 74 and parallel to the adjusting slot of the slotted plate 73 in the same direction, and as shown in fig. 9, the adjusting slot of the positioning slider 731 is provided with an installation inlet matched with the outer diameter of the adjusting screw 74 towards the cover plate 72. The positioning blocks 742 are provided on both sides of the adjustment screw 74 located in the adjustment long hole of the positioning slider 731, respectively, to define the relative positions of the adjustment screw 74 and the positioning slider 731. In order to ensure the quality of the structure, the positioning slider 731 can be used for positioning the middle point of the adjusting screw rod 74, the two end limiting blocks 732 are respectively symmetrically arranged at two sides of the positioning slider 731, the adjusting knob 741 is connected to the end part of the adjusting screw rod 74 penetrating through the end limiting blocks 732 through a thread, and the relative positions of the adjusting screw rod 74 and the end limiting blocks 732 are further limited. Two clamp hinging shafts 743 of the adjusting screw 74 are symmetrically arranged between the positioning sliding block 731 and the end limiting blocks 732 at two sides, the clamping members hinging shafts 743 are perpendicular to the adjusting long holes, at this time, the clamping members 71 enable the clamping ends to extend to one side of the middle positioning layer along the direction parallel to the adjusting long holes, and a handle 75 for adjusting the relative distance between the clamping ends is arranged at the other side of the adjusting screw 74. One end of the handle 75 extends out of the positioning intermediate layer to form a regulating end, and the other end near the adjusting screw 74 is a handle connecting end hinged with a hinge turning block 751 through a longitudinal hinge shaft 752 as shown in fig. 10. The end of the clamping piece 71 with the driving hole is extended to form a handle control driving end, and the two handle control driving ends which are symmetrically arranged use a longitudinal hinge shaft 752 as a symmetry axis to respectively realize the hinging operation with the handle connecting end and the other end of the hinging rotating block 751 through a transverse hinge shaft 753. The cover plate 72 on the other side of the adjusting screw 74 is provided with a longitudinal limiting through hole 721 and a transverse limiting through hole 722 respectively along the directions parallel to the adjusting long hole and perpendicular to the long hole, and the longitudinal hinge shaft 752 and the transverse hinge shaft 753 respectively penetrate through the longitudinal limiting through hole 721 and the transverse limiting through hole 722 in the directions and realize reciprocating movement along the axes thereof. When the adjusting end of the handle 75 rotates counterclockwise, under the limiting action of the transverse limiting through hole 722 and the longitudinal limiting through hole 721, the longitudinal hinge shaft 752 moves upward along the longitudinal limiting through hole 721, and further drives the transverse hinge shaft 753 to move toward the longitudinal hinge shaft 752, so that the clamping end is opened, and the pipe fitting can enter. When the handle 75 is rotated clockwise in the opposite direction, the clamping end is closed and positioned by the hinge shaft, thereby clamping the pipe. In order to ensure the clamping effect, the clamping device 7 is internally provided with a limiting elastic piece, so that the clamping positioning effect of the clamping end is limited and fixed, and the clamping quality is ensured.

The tubular part positioned by the gripping device 7 is also positioned in a cylindrical tubular part placement site surrounded by the drive system and the rotary system. The structure of the transmission system is as shown in fig. 6, the end part of the transmission system surrounding the pipe placing position is a circular ring structure with one open end, and the transmission system is arranged towards the inner side of the pipe placing position for connecting a linkage inner gear ring 51 of the rotating system. The inner ring gear 51 is connected to the drive motor 6 through a transmission gear, and rotates along the axis. In order to ensure the driving safety protection effect, a safety clutch is arranged between the driving motor 6 and the transmission gear, and further the damage of the overload of the device to the internal structure is further prevented. And this safety clutch can carry out the setting of eight circular cone holding screws circumference to the rotatory length that utilizes holding screw adjusts the separation and reunion effort of clutch, and then hoisting device's application scope, guarantees application quality. The rotating disc 4 of the rotating system which is coaxially connected with the linkage inner gear ring 5 performs synchronous circle center rotating motion along with the linkage inner gear ring, and the rotating disc 4 and the pipe fitting placing position are coaxially arranged, so that the coaxial effect of operation is ensured. The other side of the rotary table 4 is provided with an arc length yaw device 2, a water, electricity and gas assembly and a wire feeding system with a built-in welding wire. The arc length yaw apparatus 2 can be used as an arc length control apparatus and a yaw control apparatus by two position controllers 24 which are vertically disposed. The arc length control device 2 is vertically installed on the turntable 4 through a support 23, and the horizontal swing control device is installed on the arc length control device and can reciprocate along the direction vertical to the turntable 4 under the action of the arc length control device. In order to ensure the position controllable flexibility of the arc length control device 2, as shown in fig. 2, the support 23 is mounted on a matching slide block 22 clamped on a slide seat 21 of the rotary table 4, and the slide seat 21 is arranged along the radius direction of the rotary table 4, so that the arc length control device 2 can reciprocate towards the center of a circle, and the relative position of the arc length control device and the center of a welding rotation circle is further improved. Meanwhile, the slide block 22 and the slide base 21 are matched to arrange a fastening screw button, so that the adjusting and positioning effects are ensured. One end of the connecting plate 25 in the direction parallel to the turntable 4 is now connected to the yaw control means, so that a planar rotational operation in the direction parallel to the turntable 4 is effected by the yaw control means. The welding torch device 1 and the wire feeding support 32 are mounted on the surface of the other end of the connecting plate 25, which is far away from the turntable 4, and further move synchronously with the connecting plate 25, at the moment, the arc length horizontal swinging device 2 can drive the welding torch device 1 and the wire feeding support 32 to move along the radial direction and the axial direction through the connecting plate 25, so that the distance between a tungsten electrode and a workpiece and the position between the tungsten electrode and the center of a welding seam are adjusted, and the welding quality is ensured. In the welding process, the arc length control device is used for ensuring that the height of the tungsten electrode and the height of the workpiece are kept unchanged, and the transverse swing control device can meet the requirement of weld joint fusion width through swinging, so that the welding operation flexibility is ensured. The torch device 1 may be selected as a recirculating water-cooled TIG torch, equipped with a flow splitter, ceramic nozzle, tungsten electrode clamp and water and electrical conduit assembly. The splitter and ceramic nozzle can make the protective gas around the molten pool become uniform laminar flow. The tungsten electrode can be clamped by a tungsten electrode clamp arranged in the outer sleeve 13, and the extension length of the tungsten electrode can be adjusted. The tungsten electrode extends from the outer sleeve 13 towards the welding pipe fitting, and the other end of the outer sleeve 13 is fixed with a water-electricity pipe assembly 11 communicated with external water, electricity and gas resources through a water-electricity pipe assembly, so as to be connected with the internal structure of the outer sleeve 13. Meanwhile, the end part of the outer sleeve 13 is provided with an adjusting knob 12 to ensure the application effect, and different ceramic nozzles, tungsten electrode clamps and flow dividers are selected according to the welding state when pipes with different diameters are welded. To ensure the quality of the application, the end of the connection plate 25 may be provided with an insulating block 26 to connect the welding device 1. At this time, the wire holder 322 of the wire holder 32 on the side of the torch device 1 is vertically fitted over a small shaft vertically mounted on the connecting plate 25 so as to be rotatable about the small shaft, thereby adjusting the distance of the wire feeding mouth 324 from the tungsten electrode. As shown in fig. 3, a clamp block 323 mounted with a wire feed mouth 324 is fixed to the other end portion of the wire feed block 322 by a bolt hinge. When the wire feeding angle is adjusted, the bolt is unscrewed, so that the clamping block 323 drives the wire feeding nozzle 324 to rotate by a certain angle, and further screwing and positioning are performed, and the angle adjusting operation is completed. Wire feeding system installed on carousel 4 send the wire machine 3 to reach wire feeding mouth 324 along sending the wire pipe with the welding wire that winds on the wire reel in the wire reel box 31 through the integral type, realize the operation of sending a wire to welding operation then, realize automatic welding operation, guarantee welding quality, above-mentioned device carries out synchronous revolution along with carousel 4 simultaneously, welding structure's cooperation relation has been guaranteed, for welding quality provides the guarantee, in addition through the integration of structure, application cost has been reduced, welding operation's sustainability has been promoted.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The full-automatic pipe welding machine head is characterized by comprising a rotating system, a clamping device (7), a transmission system and a wire feeding system with a built-in wire reel, wherein the transmission system comprises a driving motor (6), a transmission gear and a linkage inner gear ring (51), the driving motor (6) drives the linkage inner gear ring (51) to rotate along an axis through the transmission gear, a rotary disc (4) of the rotating system is coaxially connected to one side of the inner gear ring and synchronously moves with the inner gear ring, an arc length transverse swing device (2), a water-electricity-gas assembly and a wire feeding support communicated with the wire feeding system are installed on the other side of the rotary disc (4), the arc length transverse swing device (2) is connected with a welding torch device (1) and realizes displacement driving operation of the welding torch device (1), and the welding torch device (1) comprises a shunt, a ceramic nozzle, a water and electricity pipe assembly (11) that is used for the tungsten utmost point fixed tungsten utmost point to press from both sides and communicates with water and electricity gas assembly, water and electricity pipe assembly (11) realize the intercommunication with outside water, electricity, gas resource through water and electricity gas assembly, clamping device (7) and rotating system connect respectively in transmission system's both sides and along the pipe fitting that the axis of carousel (4) formed to link up and place the position, clamping device (7) are used for realizing treating the location operation that the position was placed to the welding pipe spare at the pipe fitting.

2. The machine head according to claim 1, characterized in that said rotary system and transmission system provide the opening of the welding inlet in communication with the welding station of the tubular element in the direction of the opening of the clamping means (7).

3. The fully automatic pipe welding head according to claim 1 or 2, wherein the clamping device (7) comprises two clamping members (71), an adjusting screw rod (74), a slotted plate (73), a cover plate (72) and an adjusting handle (75) which are oppositely arranged, the slotted plate (73) and the cover plate (72) surround to form a positioning intermediate layer for installing the adjusting screw rod (74), a positioning slider (731) and an end limiting block (732) for the adjusting screw rod (74) to pass through are respectively arranged in the middle and at two ends of the positioning intermediate layer, the positioning slider (731) and the end limiting block (732) which are respectively arranged at two sides are threaded in the direction perpendicular to the axis of the adjusting screw rod (74) and parallel to the adjusting long hole of the slotted plate (73), the end part of the adjusting screw rod (74) which passes through the end limiting block (732) is connected with the adjusting screw rod (74) through a thread, the two sides of an adjusting screw rod (74) of the positioning sliding block (731) are respectively provided with a positioning block (742), the handle (75) and the clamping piece (71) are respectively arranged at the two sides of the adjusting screw rod (74) along the opening direction of an adjusting long hole, one end of the clamping piece (71) symmetrically arranged on the adjusting screw rod (74) is provided with a driving hole position used for being sleeved on the adjusting screw rod (74) and realizing the hinging with the adjusting screw rod (74) along the direction vertical to the adjusting long hole, the other end is relatively provided with a clamping end with the inner surface matched with the outer diameter radian of a pipe fitting, the end part of the handle (75) close to the adjusting screw rod (74) is hinged with a handle connecting end of a hinged rotating block (751), the hinged shaft of the handle connecting end and the hinged rotating block (751) is a longitudinal direction (752), and the end part of the clamping piece (71), handle control drive end uses vertical articulated shaft (752) to realize respectively as the axle with handle link and articulated commentaries on classics piece (751) another tip articulated operation, the connection articulated shaft of handle (75) control end is horizontal articulated shaft (753) of locating vertical articulated shaft (752) both sides for parallel branch, apron (72) are respectively along being on a parallel with the direction of adjusting the slot hole and perpendicular to slot hole carry out the setting of vertical spacing logical groove and horizontal spacing logical groove, the direction of vertical articulated shaft (752) and horizontal articulated shaft (753) is worn to establish respectively through vertical spacing logical groove and horizontal spacing logical groove and is realized reciprocating motion along its axis.

4. The full-automatic pipe welding head according to claim 3, characterized in that the adjusting slot of the positioning slider (731) is provided with an installation inlet facing the cover plate (72) and matched with the outer diameter of the adjusting screw rod (74), and the widths of the positioning slider (731) and the end limiting block (732) are matched with the width of the positioning middle layer.

5. The full automatic pipe welding machine head according to claim 3, characterized in that the clamping end comprises an outer clamp (711) and an inner clamp (712), the inner clamp (712) is detachably sleeved and connected to the outer clamp (711), the oppositely arranged inner clamp (712) surrounds to form a small pipe diameter clamping position, and the oppositely arranged outer clamp (711) surrounds to form a large pipe diameter clamping position.

6. The fully automatic pipe welding head according to claim 1 or 2, characterized in that a safety clutch is arranged between a driving motor (6) and a transmission gear of the transmission system, and a plurality of conical set screws for realizing clutch force adjustment are circumferentially arranged on the safety clutch.

7. The fully automatic tube welder head according to claim 1, characterized in that said wire feeding system is mounted on a turntable (4) and comprises an integrated wire feeder (3) and a wire reel box (31) for mounting a wire reel, said integrated wire feeder (3) being adapted to bring the welding wire in the wire reel box along the wire feeding tube to the wire feeding mouth (324) of the wire feeding bracket (32).

8. The fully automatic tube welding head according to claim 1, characterized in that said arc length yaw device (2) is driven by a connecting plate, said welding torch device (1) and said wire feed support (32) being mounted at one end of the connecting plate (25), the other end being connected to a position controller (24) of the arc length yaw device (2).