CN114918593B - Automatic welding device and welding method for steel pipe - Google Patents
Automatic welding device and welding method for steel pipe Download PDFInfo
- Publication number
- CN114918593B CN114918593B CN202210846789.7A CN202210846789A CN114918593B CN 114918593 B CN114918593 B CN 114918593B CN 202210846789 A CN202210846789 A CN 202210846789A CN 114918593 B CN114918593 B CN 114918593B
- Authority
- CN
- China
- Prior art keywords
- welding
- steel pipe
- screw
- ring
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a mechanical welding technology, in particular to an automatic welding device and a welding method for a steel pipe, which comprise a rack and a welding frame movably arranged on the rack along the length direction of the rack; the welding frame is characterized in that a ring-shaped element is fixed on the upper portion of the welding frame, a rotating ring is rotatably sleeved on the periphery of the ring-shaped element, and a circumferential rotating structure used for driving the rotating ring to rotate around the ring-shaped element is further arranged between the rotating ring and the ring-shaped element. The flexible laminating component can keep the rubber damping wheel always elastically extruded and laminated with the outer wall of the steel pipe; when the circumference rotating structure drives the rotation circle and rotates around the annular member, move flexible laminating subassembly through the extension board and follow and rotate around the steel pipe, utilize the folding transmission assembly of rubber damping wheel cooperation to drive and send a subassembly constantly to drive the welding rod to feed this moment, and the amount of feeding of welding rod corresponds with the line stroke of rubber damping wheel, realizes automatic machine self-welding, and the precision is high, need not manual welding.
Description
Technical Field
The invention relates to a mechanical welding technology, in particular to an automatic welding device and a welding method for a steel pipe.
Background
The girth welding technology belongs to one of welding processes, is also called girth welding and is used for welding carbon steel, low alloy steel, stainless steel, aluminum, alloys thereof and other materials. The welding rod is widely applied to welding of products such as steel pipes, hydraulic oil cylinders, automobile direction racks, transmission shafts, air cylinders, chemical and medical containers, liquefied gas tanks, fire-fighting equipment, drums for mines and production lines, liquid storage cylinders and the like.
The girth welding comprises vertical girth welding and horizontal girth welding, wherein the vertical girth welding is all-position welding mainly taking a vertical seam as a main part, for example; the welding of the fixed opening of the horizontal pipe belongs to a vertical circular seam. The welding seam of the rotatable welding opening of the horizontal pipeline also belongs to a vertical circular seam; in industrial applications, horizontal girth welding is also the most common, and is the all-position welding of a transverse seam, for example; the welding of the vertical pipe welding opening is a horizontal annular seam. Belongs to the welding of horizontal circular seams; and (3) butt horizontal girth welding of the vertical steel storage tank, and transverse welding opening welding of the girth welding seam by a welder in a normal standing or squatting mode.
At present, most of welding for horizontal welding seams needs manual holding of a welding tool for welding, the precision is limited, and the labor intensity is high.
Disclosure of Invention
The invention aims to provide an automatic welding device and a welding method for steel pipes, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an automatic welding device for steel pipes comprises a rack and a welding rack movably arranged on the rack along the length direction of the rack;
a ring-shaped part is fixed at the upper part of the welding frame, a rotating ring is rotatably sleeved on the periphery of the ring-shaped part, and a circumferential rotating structure for driving the rotating ring to rotate around the ring-shaped part is further arranged between the rotating ring and the ring-shaped part;
an extension plate is fixedly mounted on the rotating ring, a flexible laminating assembly is arranged on the extension plate and arranged along the radial direction of the rotating ring, a rubber damping wheel is rotatably arranged at one end, facing the steel pipe, of the flexible laminating assembly, and the rubber damping wheel is in friction rolling lamination with the outer surface of the steel pipe;
still be provided with on the extension board and send a subassembly, it also follows to send a subassembly the radial setting of circle rotates, send a subassembly orientation the one end of steel pipe can be dismantled and be provided with the welding rod, send a subassembly with connect through folding drive assembly between the rubber damping wheel.
The automatic welding device for steel pipes comprises: the circumferential rotating structure comprises a micro motor fixed on one side of the annular piece, a straight gear which is rotatably arranged on the annular piece through a rotating shaft and connected with the output end of the micro motor, and a circle of outer toothed ring fixed on the periphery of the rotating ring; the outer gear ring is meshed with the straight gear.
The automatic welding device for steel pipes comprises: the flexible attaching assembly comprises a sleeve seat fixed on the extension plate, a compression arm penetrating through the extension plate and having one end extending into the sleeve seat to be in sliding fit with the inner wall of the sleeve seat, and a cylindrical spring elastically connecting the sleeve seat and one end of the compression arm extending into the sleeve seat;
an opening is formed in one end, attached to the extension plate, of the sleeve seat, a penetrating opening is formed in the extension plate, the position, corresponding to the opening, of the extension plate, one end of the compression arm penetrates through the penetrating opening and the opening and extends into the sleeve seat, one end of the cylindrical spring is attached to the top of the inner wall of the sleeve seat, the other end of the cylindrical spring is attached to one end, extending into the sleeve seat, of the compression arm, and the cylindrical spring is under normal pressure;
the rubber damping wheel is rotatably arranged at one end of the compression arm extending out of the sleeve seat through a first shaft element.
The automatic welding device for steel pipes comprises: the wire feeding assembly comprises a screw cylinder rotatably arranged on the extension plate, a lead screw penetrating through the extension plate and in threaded fit with the screw cylinder, and guide rods fixed on two sides of one end, facing the steel pipe, of the lead screw;
the guide rod is in sliding fit with the guide hole formed in the extension plate, and the welding rod is detachably arranged at one end, facing the steel pipe, of the lead screw;
the extension plate is provided with a screw feeding port through which the screw rod passes and is in clearance fit with the screw feeding port; the screw rod and the screw cylinder are arranged along the radial direction of the rotating ring.
The automatic welding device for steel pipes comprises: the folding transmission assembly comprises a first connecting arm, a second driving belt, a second connecting arm and a third driving belt, wherein one end of the first connecting arm is rotationally connected with the first shaft, the other end of the first connecting arm is rotationally connected with the second shaft, the second driving belt is connected with the second shaft and the first shaft, one end of the second connecting arm is rotationally connected with the second shaft, the other end of the second connecting arm is rotationally connected with the third shaft, and the third driving belt is connected with the third shaft and the second shaft;
one end of the third shaft piece is rotatably installed on the outer wall of the sleeve seat, a first bevel gear is fixed at the other end of the third shaft piece, and the first bevel gear is meshed with a second bevel gear fixed on the screw cylinder.
The automatic welding device for steel pipes comprises: a group of fixing mechanisms are respectively arranged on two sides of the rack in the length direction, and each fixing mechanism comprises a supporting seat and a fixing disk fixed on the supporting seat;
the fixed disk upper portion is seted up with the coaxial grip slipper of annular member and rotation circle four radial slide have been seted up along circumference equidistance to the radial of grip slipper, it is provided with the gripper jaw, four to slide in the radial slide wherein two of the gripper jaw are a set of and are in same height, and two are a set of and are in same height, four in addition connect through fastening structure between the gripper jaw.
The automatic welding device for steel pipes comprises: a clamping groove is formed in the inner wall of each radial slideway, a clamping block in sliding fit with the clamping groove is fixedly arranged on one side of each clamping jaw, and a connecting column matched with the fastening structure is fixedly arranged on the other side of each clamping block;
one end of the clamping claw, which faces the steel pipe, is provided with an arc part.
The automatic welding device for steel pipes comprises: the fastening structure comprises two adjusting beams which are arranged horizontally and are parallel to each other, through grooves are formed in the adjusting beams along the length direction of the adjusting beams, connecting columns on two clamping claws on the upper portion are arranged in the through grooves in a sliding mode on one adjusting beam, and connecting columns on two clamping claws on the lower portion are arranged in the through grooves on the other adjusting beam in a sliding mode;
threaded sleeves are fixed at two ends of each adjusting beam, and the thread directions of the threads in the threaded sleeves at the same end of the two adjusting beams are opposite; a double-threaded screw matched with the thread of the threaded sleeve is rotatably arranged on the supporting seat, and two sections of external threads with opposite thread turning directions are arranged on the double-threaded screw;
the number of the double-threaded screws is two, and the thread sleeves at the same end of the two adjusting beams are matched with the two sections of external threads on one of the double-threaded screws;
two the double-threaded screw is connected through a first driving belt, and a power wheel is fixed at the upper end of one double-threaded screw.
The automatic welding device for steel pipes comprises: the supporting seat in one group of fixing mechanisms is fixed with the rack through a bolt, the bottom of the supporting seat in the other group of fixing mechanisms is fixed with a supporting leg, the supporting leg is in sliding fit with a guide groove arranged on the rack, and the guide groove is arranged along the length direction of the rack;
the bottom of the welding frame is rotatably provided with a rotating roller which is in rolling fit with the upper surface of the rack, and the lower part of the welding frame is connected with the lower part of a fixed disk in one group of fixing mechanisms through a pushing cylinder.
An automatic welding method for steel pipes comprises the following steps:
step one, a steel pipe is in place, the steel pipe penetrates through clamping ports on two groups of fixing mechanisms, the position of one group of fixing mechanisms is adjusted, and the two groups of fixing mechanisms are kept to correspond to the two ends of the steel pipe;
step two, clamping and fixing, namely respectively rotating power wheels on the two groups of fixing mechanisms to enable two adjusting beams on the fixing mechanisms to be close to each other, and clamping the end parts of the steel pipes by using four clamping claws;
step three, station adjustment, namely, driving the welding frame to move along the length direction of the rack through a pushing cylinder, and adjusting the screw rod to correspond to the gap defect;
step four, installing welding rods, pulling the compression arm upwards to further compress the cylindrical spring, installing the welding rods at the end part of the lead screw, loosening the compression arm to enable the rubber damping wheel to be tightly attached to the outer wall of the steel pipe and keeping the end part of the welding rods attached to the surface of the steel pipe;
and step five, starting circular welding, and simultaneously connecting the welding rod and the micro motor with a power supply to weld the circular defects on the steel pipe.
Compared with the prior art, the invention has the beneficial effects that: the flexible laminating component can keep the rubber damping wheel always elastically extruded and laminated with the outer wall of the steel pipe; when the circumferential rotating structure drives the rotating ring to rotate around the ring-shaped member, the flexible laminating assembly is driven to rotate around the steel pipe through the extension plate, the rubber damping wheel is matched with the folding transmission assembly to drive the wire feeding assembly to continuously drive the welding rod to feed, the feeding amount of the welding rod corresponds to the linear stroke of the rubber damping wheel, automatic mechanical self-welding is achieved, the precision is high, and manual welding is not needed.
Drawings
FIG. 1 is a schematic structural view of a horizontal girth welding apparatus.
FIG. 2 is a schematic structural diagram of a fixing mechanism in the horizontal girth welding device.
FIG. 3 is a partially exploded view of a fixing mechanism in the horizontal girth welding apparatus.
Fig. 4 is a schematic structural diagram of the fixing mechanism when a connecting column on a clamping claw and a through groove on an adjusting beam are disassembled.
FIG. 5 is a schematic structural diagram of a circumferential rotation structure, a flexible joint assembly, a wire feeding assembly and a folding transmission assembly on a welding frame in the horizontal girth welding device.
Fig. 6 is a schematic view showing a structure of the horizontal girth welding apparatus after the rotating ring is detached from the ring member.
Fig. 7 is a schematic structural diagram of the horizontal girth welding device after the flexible attaching assembly, the wire feeding assembly and the folding transmission assembly are disassembled.
In the figure: 1. a rack; 2. a supporting base; 3. fixing the disc; 4. a radial slideway; 401. a card slot; 5. a gripper jaw; 501. a clamping block; 502. connecting columns; 6. adjusting the beam; 601. penetrating a groove; 602. a threaded sleeve; 7. a double-ended screw; 8. a first drive belt; 9. a mounting frame; 10. a steel pipe; 11. a support leg; 12. a guide groove; 13. a power wheel; 14. pushing the cylinder; 15. welding a frame; 16. an annular member; 17. rotating the ring; 18. an outer ring gear; 19. a micro motor; 20. a spur gear; 21. an extension plate; 22. a sleeve seat; 23. a compression arm; 24. a cylindrical spring; 25. a rubber damping wheel; 26. a first shaft member; 27. a first connecting arm; 28. a second belt; 29. a second shaft member; 30. a third belt; 31. a second connecting arm; 32. a third shaft member; 33. a first bevel gear; 34. a second bevel gear; 35. a screw cylinder; 36. a lead screw; 37. welding rods; 38. a guide rod.
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 7, as an embodiment of the present invention, the automatic welding device for steel pipes includes a rack 1 and a welding frame 15 movably disposed on the rack 1 along a length direction of the rack 1;
a ring-shaped part 16 is fixed at the upper part of the welding frame 15, a rotating ring 17 is rotatably sleeved on the periphery of the ring-shaped part 16, and a circumferential rotating structure for driving the rotating ring 17 to rotate around the ring-shaped part 16 is further arranged between the rotating ring 17 and the ring-shaped part 16;
an extension plate 21 is fixedly installed on the rotating ring 17, a flexible laminating assembly is arranged on the extension plate 21 and arranged along the radial direction of the rotating ring 17, a rubber damping wheel 25 is rotatably arranged at one end, facing the steel pipe 10, of the flexible laminating assembly, and the rubber damping wheel 25 is in friction rolling lamination with the outer surface of the steel pipe 10;
still be provided with on the extension board 21 and send a subassembly, send a subassembly also to follow the radial setting of circle 17 rotates, send a subassembly orientation the one end of steel pipe 10 can be dismantled and be provided with welding rod 37, send a subassembly with connect through folding drive assembly between the rubber damping wheel 25.
Wherein the ring member 16 is disposed on the outer circumference of the steel pipe 10 and is coaxial therewith.
The rubber damping wheel 25 can be kept to be elastically extruded and jointed with the outer wall of the steel pipe 10 all the time by virtue of the flexible jointing component; when the circumferential rotating structure drives the rotating ring 17 to rotate around the annular part 16, the extending plate 21 drives the flexible laminating assembly to rotate around the steel pipe 10, at the moment, the rubber damping wheel 25 is matched with the folding transmission assembly to drive the wire feeding assembly to continuously drive the welding rod 37 to feed, and the feeding amount of the welding rod 37 corresponds to the linear stroke of the rubber damping wheel 25.
It is noted that, because the flexible joint assembly is provided, for steel pipes 10 with different diameters, the rubber damping wheel 25 can be kept jointed with the outer wall of the steel pipe 10, and has a certain extrusion force, so that the rubber damping wheel 25 can rotate around the outside of the steel pipe 10 without slipping.
In addition, by means of the folding transmission assembly, when the steel pipes 10 with different diameters are welded, although the distance between the rubber damping wheel 25 and the wire feeding assembly is changed, the rubber damping wheel 25 and the wire feeding assembly can always maintain the related transmission.
In addition, it is important to point out that the wire feeding assembly and the rubber damping wheel 25 are in linkage transmission in the present invention, so that the wire feeding amount can be correspondingly controlled according to the diameter of the steel pipe 10.
For example, when a steel pipe 10 having a diameter of 10 cm is hoop-welded, the length of one hoop welding is 0.1 π m, and therefore the consumption of the corresponding welding rod 37 is the weld bead welding consumption of 0.1 π m;
when the steel pipe 10 of 20 cm is subjected to circumferential welding, the length of one circumferential welding is 0.2 pi meter, so that the consumption of the corresponding welding rod 37 is the welding consumption of a welding seam with the length of 0.2 pi meter;
although the wire feeding assembly and the flexible laminating assembly rotate 360 degrees in the girth welding process, the wire feeding amount is different and is different by 1 time.
That is, the wire feeding amount of the welding rod 37 in one circular welding is different for steel pipes 10 with different diameters, and in the present application, the wire feeding amount of the welding rod 37 is directly related to the rotation linear stroke of the rubber damper wheel 25, and the linear stroke of the rubber damper wheel 25 is the outer wall circumference of the steel pipe 10, so that in the present application, the wire feeding amount of the welding rod 37 is directly related to the outer wall circumference of the steel pipe 10, and the wire feeding amount of the welding rod 37 corresponds to the outer circumference of the steel pipe 10.
Specifically, two circles of steps are arranged on the outer wall of the annular member 16, and the rotating ring 17 is rotatably sleeved between the two circles of steps, so that the axial misalignment between the rotating ring 17 and the annular member 16 can be prevented.
As a further scheme of the present invention, the circular rotating structure comprises a micro motor 19 fixed on one side of the ring-shaped member 16, a spur gear 20 rotatably mounted on the ring-shaped member 16 through a rotating shaft and connected to an output end of the micro motor 19, and a ring of outer toothed ring 18 fixed on the outer circumference of the rotating ring 17; the outer toothed ring 18 meshes with the spur gear 20.
The micro motor 19 is powered on to drive the rotating shaft to rotate, so as to drive the spur gear 20 to rotate, and the rotating spur gear 20 drives the outer gear ring 18 and the rotating ring 17 to rotate around the outer wall of the annular part 16.
As a further aspect of the present invention, the flexible attaching assembly includes a sleeve seat 22 fixed on the extension plate 21, a compression arm 23 penetrating through the extension plate 21 and having one end extending into the sleeve seat 22 to slidably fit with an inner wall of the sleeve seat 22, and a cylindrical spring 24 elastically connecting the sleeve seat 22 and one end of the compression arm 23 extending into the sleeve seat 22;
an opening is formed in one end, attached to the extension plate 21, of the sleeve seat 22, a penetrating opening is formed in the extension plate 21, corresponding to the opening, one end of the compression arm 23 penetrates through the penetrating opening and the opening and extends into the sleeve seat 22, one end of the cylindrical spring 24 is attached to the top of the inner wall of the sleeve seat 22, the other end of the cylindrical spring is attached to one end, extending into the sleeve seat 22, of the compression arm 23, and the cylindrical spring 24 is under normal pressure;
the rubber damper wheel 25 is rotatably mounted on one end of the compression arm 23 extending out of the sleeve seat 22 by a first shaft member 26.
Because the cylindrical spring 24 is in a normal pressure state, a certain elastic extrusion force is always provided between the rubber damping wheel 25 and the outer wall of the steel pipe 10 to increase the friction force between the rubber damping wheel 25 and the outer wall of the steel pipe 10, so that the transmission precision of the rubber damping wheel 25 is improved, and the slip probability between the rubber damping wheel 25 and the outer wall of the steel pipe 10 is reduced and eliminated;
in addition, the cylindrical spring 24 also enables the rubber damping wheel 25 to be attached to the outer wall of the steel pipe 10 in an extrusion manner when the steel pipes 10 with different diameters are subjected to girth welding.
As a further aspect of the present invention, the wire feeding assembly includes a screw cylinder 35 rotatably disposed on the extension plate 21, a lead screw 36 passing through the extension plate 21 and threadedly engaged with the screw cylinder 35, and guide rods 38 fixed to both sides of one end of the lead screw 36 facing the steel pipe 10;
the guide rod 38 is in sliding fit with a guide hole formed in the extension plate 21, and the welding rod 37 is detachably arranged at one end of the lead screw 36 facing the steel pipe 10;
of course, the extension plate 21 is provided with a screw feeding port through which the screw 36 passes and is in clearance fit; the screw shaft 36 and the screw cylinder 35 are both arranged in the radial direction of the rotating ring 17.
When the screw barrel 35 rotates, the screw rod 36 is driven to continuously approach the steel pipe 10 along the radial direction of the steel pipe 10 under the action of the guide rod 38, so as to drive the welding rod 37 to continuously feed, thereby realizing the wire feeding effect, and the welding rod 37 always feeds the wire along the radial direction of the steel pipe 10, so that the welding rod 37 continuously approaches the outer wall of the steel pipe 10 to feed the wire while following the rotating ring 17 to make circular motion.
As a still further aspect of the present invention, the folding transmission assembly includes a first connecting arm 27 having one end rotatably connected to the first shaft member 26 and the other end rotatably connected to a second shaft member 29, a second transmission belt 28 connecting the second shaft member 29 and the first shaft member 26, a second connecting arm 31 having one end rotatably connected to the second shaft member 29 and the other end rotatably connected to a third shaft member 32, and a third transmission belt 30 connecting the third shaft member 32 and the second shaft member 29;
one end of the third shaft member 32 is rotatably mounted on the outer wall of the socket 22, and the other end is fixed with a first bevel gear 33, and the first bevel gear 33 is engaged with a second bevel gear 34 fixed on the screw cylinder 35.
When the rotating ring 17 drives the extension plate 21, the flexible joint component and the rubber damping wheel 25 to make a circular motion around the steel pipe 10, the rubber damping wheel 25 drives the first shaft member 26 to rotate, the first shaft member 26 drives the second shaft member 29 to rotate through the second transmission belt 28, the second shaft member 29 drives the third shaft member 32 to rotate through the third transmission belt 30, and finally, the two bevel gears are engaged to drive the screw barrel 35 to rotate, so that the lead screw 36 can continuously drive the welding rod 37 to approach the outer wall of the steel pipe 10 for feeding and wire feeding.
Note that, when welding steel pipes 10 of different diameter sizes, the distance of the rubber damper wheel 25 from the third shaft member 32 is different, i.e., the distance between the first shaft member 26 and the third shaft member 32 is varied; in the application, the first connecting arm 27 and the second connecting arm 31 are matched with the second shaft element 29 to achieve that the total length of a transmission route between the first shaft element 26 and the third shaft element 32 is unchanged, the linear distance between the first connecting arm 27 and the second connecting arm 31 can be folded mutually to achieve adaptive adjustment, and for circular welding of steel pipes 10 with small diameter sizes, the first connecting arm 27 and the second connecting arm 31 are expanded mutually to increase the included angle between the first connecting arm 27 and the second connecting arm 31 to achieve that the linear distance between the first shaft element 26 and the third shaft element 32 is increased; for the circular welding of the steel pipe 10 with a larger diameter, the first connecting arm 27 and the second connecting arm 31 are close to each other, so that the included angle between the first connecting arm 27 and the second connecting arm 31 is reduced, the linear distance between the first shaft 26 and the third shaft 32 is shortened, and the length of a transmission path between the first shaft 26 and the third shaft 32 is unchanged in the process.
With the folding drive assembly of the present application, drive is maintained between the movable first shaft member 26 and the fixed position third shaft member 32.
As a further scheme of the present invention, a set of fixing mechanisms is respectively arranged on both sides of the length direction of the rack 1, and each fixing mechanism comprises a supporting seat 2 and a fixing disk 3 fixed on the supporting seat 2;
The four clamping claws 5 can be driven to mutually gather or separate along the radial direction of the clamping opening through the fastening structure, so that the steel pipe 10 passing through the clamping opening is clamped and fixed circumferentially.
When clamping the steel pipe 10, the steel pipe 10 is first inserted through the clamping openings in the upper portions of the fixed disks 3 on both sides, then both sides of the steel pipe 10 are fixed to the clamping openings by means of the fastening structures on both sides, and finally the steel pipe 10 is fixed.
As a further scheme of the invention, a clamping groove 401 is formed on the inner wall of each radial slideway 4, a clamping block 501 in sliding fit with the clamping groove 401 is fixedly arranged on one side of each clamping claw 5, and a connecting column 502 in fit with the fastening structure is fixedly arranged on the other side of each clamping block 501;
the gripper 5 has a circular arc portion at one end facing the steel pipe 10.
The clamping claws 5 can only slide along the radial slide ways 4 through the sliding fit of the clamping blocks 501 and the clamping grooves 401, so that the four clamping claws 5 are synchronously gathered together or separated at equal intervals, and the steel pipe 10 is clamped at equal angles in four circumferential directions;
because the clamping jaw 5 has the circular arc portion towards the one end of steel pipe 10, therefore the outer wall contact point of single clamping jaw 5 and steel pipe 10 has two, compares in clamping jaw 5 direct and steel pipe 10 line contact, has increased the stress point number, and the centre gripping stress point of four clamping jaws 5 and steel pipe 10 has eight, improves fixed stability.
As a further scheme of the present invention, the fastening structure comprises two adjusting beams 6 which are horizontally arranged and parallel to each other, a through groove 601 is arranged on the adjusting beam 6 along the length direction thereof, the connecting column 502 on the two clamping claws 5 at the upper part is slidably arranged in the through groove 601 on one of the adjusting beams 6, and the connecting column 502 on the two clamping claws 5 at the lower part is slidably arranged in the through groove 601 on the other adjusting beam 6;
threaded sleeves 602 are fixed at two ends of each adjusting beam 6, and the thread directions of the threads inside the threaded sleeves 602 at the same end of the two adjusting beams 6 are opposite; a double-threaded screw 7 in threaded fit with the threaded sleeve 602 is rotatably arranged on the supporting seat 2, and two sections of external threads with opposite thread turning directions are arranged on the double-threaded screw 7;
the number of the double-threaded screws 7 is two, and the thread sleeves 602 at the same end of the two adjusting beams 6 are matched with two sections of external threads on one of the double-threaded screws 7;
the two double-head screws 7 are connected through a first transmission belt 8, and a power wheel 13 is fixed at the upper end of one double-head screw 7;
in addition, be fixed with mounting bracket 9 on the supporting seat 2, mounting bracket 9 is "Z" style of calligraphy, and the lower part and the supporting seat 2 of mounting bracket 9 are fixed, the upper end with double threaded screw 7 upper portion normal running fit.
The mounting frame 9 can improve the stability of the double-end screw 7 and avoid the unstable suspension of the upper part of the double-end screw 7; can drive one of them double-threaded screw 7 through manual rotation power wheel 13 and rotate, utilize first drive belt 8 to drive another double-threaded screw 7 and follow the rotation, make two double-threaded screw 7 rotate with the same speed syntropy, double-threaded screw 7 cooperates with swivel nut 602 on two regulation roof beams 6 with the help of two sections screw threads that the screw thread is revolved to opposite direction and makes two regulation roof beams 6 draw close each other or keep away from along vertical direction, and then drive four spliced poles 502 and slide along wearing groove 601, finally realize four clamping jaw 5 and slide in radial slide 4 along draw-in groove 401 under the effect of fixture block 501, gather together each other or keep away from along the radial of centre gripping mouth.
As a further scheme of the invention, the support seat 2 in one group of fixing mechanisms is fixed with the rack 1 through a bolt, the support seat 2 in the other group of fixing mechanisms is fixed with a support leg 11 at the bottom, and the support leg 11 is in sliding fit with a guide groove 12 arranged on the rack 1;
the guide groove 12 and the support leg 11 are matched to enable one group of fixing mechanisms to move, and the other group of fixing mechanisms is close to or far away from the other group of fixing mechanisms, so that the distance between the two groups of fixing mechanisms can be adjusted, and the steel pipes 10 with different lengths can be clamped and fixed conveniently.
The guide groove 12 is provided along the longitudinal direction of the table frame 1.
The bottom of the welding frame 15 is rotatably provided with a rotating roller which is in rolling fit with the upper surface of the rack 1, and the lower part of the welding frame 15 is connected with the lower part of the fixed disk 3 in one group of fixing mechanisms through an ejection cylinder 14;
in detail, the pushing cylinder 14 comprises an air cylinder or a hydraulic cylinder, the pushing cylinder 14 is fixedly installed at the lower part of the fixed disk 3, one end of the pushing cylinder 14, which faces the welding frame 15, is a telescopic end, a piston rod is arranged at the telescopic end in a sealing and sliding manner, and one end of the piston rod, which extends out of the pushing cylinder 14, is fixed with the welding frame 15.
The position of the welding frame 15 can be adjusted by matching the pushing cylinder 14 with the piston rod, and after the steel pipe 10 is clamped and fixed by the two groups of fixing mechanisms, the position of the welding frame 15 can be adjusted by controlling the pushing cylinder 14 to be matched with the piston rod, so that the welding frame can move to the gap defect on the steel pipe 10.
In addition, the invention also provides an automatic welding method of the steel pipe, which comprises the following steps:
step one, a steel pipe is in place, the steel pipe penetrates through clamping ports on two groups of fixing mechanisms, the position of one group of fixing mechanisms is adjusted, and the two groups of fixing mechanisms are kept to correspond to the two ends of the steel pipe;
step two, clamping and fixing, namely respectively rotating power wheels on the two groups of fixing mechanisms to enable two adjusting beams on the fixing mechanisms to be close to each other, and clamping the end parts of the steel pipes by using four clamping claws;
step three, station adjustment, namely, driving the welding frame to move along the length direction of the rack through a pushing cylinder, and adjusting the screw rod to correspond to the gap defect;
step four, installing welding rods, pulling the compression arm upwards to further compress the cylindrical spring, installing the welding rods at the end part of the lead screw, loosening the compression arm to enable the rubber damping wheel to be tightly attached to the outer wall of the steel pipe and keeping the end part of the welding rods attached to the surface of the steel pipe;
and step five, starting circular welding, simultaneously connecting the welding rod and the micro motor with a power supply, welding the circular defects on the steel pipe, powering off the welding rod and the micro motor after the welding of the defects is finished, and grinding or eliminating the craters at the welding positions by a grinding file.
The above embodiments are exemplary rather than limiting, and embodiments of the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
Claims (7)
1. An automatic welding device for steel pipes comprises a rack (1) and a welding frame (15) movably arranged on the rack (1) along the length direction of the rack (1), and is characterized in that an annular piece (16) is fixed at the upper part of the welding frame (15), a rotating ring (17) is rotatably sleeved on the periphery of the annular piece (16), and a circumferential rotating structure for driving the rotating ring (17) to rotate around the annular piece (16) is further arranged between the rotating ring (17) and the annular piece (16);
an extension plate (21) is fixedly mounted on the rotating ring (17), a flexible laminating assembly is arranged on the extension plate (21), the flexible laminating assembly is arranged along the radial direction of the rotating ring (17), a rubber damping wheel (25) is rotatably arranged at one end, facing the steel pipe (10), of the flexible laminating assembly, and the rubber damping wheel (25) is in friction rolling lamination with the outer surface of the steel pipe (10);
the extension plate (21) is also provided with a wire feeding assembly, the wire feeding assembly is also arranged along the radial direction of the rotating ring (17), one end of the wire feeding assembly, facing the steel pipe (10), is detachably provided with a welding rod (37), and the wire feeding assembly is connected with the rubber damping wheel (25) through a folding transmission assembly;
the flexible attaching assembly comprises a sleeve seat (22) fixed on the extension plate (21), a compression arm (23) penetrating through the extension plate (21) and having one end extending into the sleeve seat (22) to be in sliding fit with the inner wall of the sleeve seat (22), and a cylindrical spring (24) elastically connecting one end of the sleeve seat (22) and one end of the compression arm (23) extending into the sleeve seat (22);
an opening is formed in one end, attached to the extension plate (21), of the sleeve seat (22), a penetrating opening is formed in the extension plate (21) and corresponds to the opening, one end of the compression arm (23) penetrates through the penetrating opening and the opening and extends into the sleeve seat (22), one end of the cylindrical spring (24) is attached to the top of the inner wall of the sleeve seat (22), the other end of the cylindrical spring is attached to one end, extending into the sleeve seat (22), of the compression arm (23), and the cylindrical spring (24) is under normal pressure;
the rubber damping wheel (25) is rotatably arranged at one end of the compression arm (23) extending out of the sleeve seat (22) through a first shaft element (26);
the wire feeding assembly comprises a screw cylinder (35) rotatably arranged on the extension plate (21), a lead screw (36) penetrating through the extension plate (21) and in threaded fit with the screw cylinder (35), and guide rods (38) fixed on two sides of one end, facing the steel pipe (10), of the lead screw (36);
the guide rod (38) is in sliding fit with a guide hole formed in the extension plate (21), and the welding rod (37) is detachably arranged at one end, facing the steel pipe (10), of the lead screw (36);
the extension plate (21) is provided with a screw feeding port through which the screw (36) passes and is in clearance fit with the screw feeding port; the screw rod (36) and the screw cylinder (35) are arranged along the radial direction of the rotating ring (17);
the folding transmission assembly comprises a first connecting arm (27) with one end rotatably connected with the first shaft member (26) and the other end rotatably connected with a second shaft member (29), a second transmission belt (28) connected with the second shaft member (29) and the first shaft member (26), a second connecting arm (31) with one end rotatably connected with the second shaft member (29) and the other end rotatably connected with a third shaft member (32), and a third transmission belt (30) connected with the third shaft member (32) and the second shaft member (29);
one end of the third shaft element (32) is rotatably arranged on the outer wall of the sleeve seat (22), a first bevel gear (33) is fixed at the other end of the third shaft element, and the first bevel gear (33) is meshed with a second bevel gear (34) fixed on the screw cylinder (35).
2. An automatic welding device for steel pipes according to claim 1, characterized in that the circular rotating structure comprises a micro motor (19) fixed on one side of the ring-shaped member (16), a spur gear (20) rotatably mounted on the ring-shaped member (16) through a rotating shaft and connected to the output end of the micro motor (19), and a ring of external gear rings (18) fixed on the outer periphery of the rotating ring (17); the outer toothed ring (18) is meshed with the spur gear (20).
3. The automatic welding device for the steel pipes according to claim 1, wherein a set of fixing mechanisms are respectively arranged at two sides of the length direction of the rack (1), and each fixing mechanism comprises a supporting seat (2) and a fixed disc (3) fixed on the supporting seat (2);
fixed disk (3) upper portion seted up with ring-shaped member (16) and the coaxial grip opening of rotating ring (17) radial along circumference equidistance of grip opening has seted up four radial slide (4), it is provided with gripper jaw (5), four to slide in radial slide (4) wherein two in gripper jaw (5) are a set of and are in same height, and two are a set of and are in same height, four in addition the gripper jaw (5) are connected through fastening structure.
4. The automatic welding device for the steel pipes according to claim 3, wherein a clamping groove (401) is formed in the inner wall of each radial slideway (4), a clamping block (501) in sliding fit with the clamping groove (401) is fixedly arranged on one side of each clamping jaw (5), and a connecting column (502) in fit with the fastening structure is fixedly arranged on the other side of each clamping block (501);
one end of the clamping claw (5) facing the steel pipe (10) is provided with an arc part.
5. The automatic welding device for the steel pipes according to claim 4, characterized in that the fastening structure comprises two adjusting beams (6) which are arranged horizontally and vertically and are parallel to each other, a through groove (601) is arranged on each adjusting beam (6) along the length direction of the adjusting beam, the connecting column (502) on the two clamping jaws (5) on the upper part is slidably arranged on the through groove (601) on one adjusting beam (6), and the connecting column (502) on the two clamping jaws (5) on the lower part is slidably arranged on the through groove (601) on the other adjusting beam (6);
threaded sleeves (602) are fixed at two ends of each adjusting beam (6), and the thread directions of the inner parts of the threaded sleeves (602) at the same end of the two adjusting beams (6) are opposite; a double-threaded screw (7) in threaded fit with the threaded sleeve (602) is rotatably arranged on the supporting seat (2), and two sections of external threads with opposite thread turning directions are arranged on the double-threaded screw (7);
the number of the double-threaded screws (7) is two, and screw sleeves (602) at the same end of the two adjusting beams (6) are matched with two sections of external threads on one of the double-threaded screws (7);
two connect through first drive belt (8) between double-end screw (7), one of them double-end screw (7) upper end is fixed with power wheel (13).
6. An automatic welding device for steel pipes according to claim 3, wherein the supporting seat (2) of one set of fixing mechanism is fixed with the rack (1) through bolts, the supporting foot (11) is fixed at the bottom of the supporting seat (2) of the other set of fixing mechanism, the supporting foot (11) is in sliding fit with a guide groove (12) formed in the rack (1), and the guide groove (12) is arranged along the length direction of the rack (1);
the bottom of the welding frame (15) is rotatably provided with a rotating roller which is in rolling fit with the upper surface of the rack (1), and the lower part of the welding frame (15) is connected with the lower part of a fixed disc (3) in one group of fixing mechanisms through an ejection cylinder (14).
7. A method for automatically welding steel pipes using the apparatus according to any one of claims 1 to 6, comprising the steps of:
step one, a steel pipe is in place, the steel pipe penetrates through clamping ports on two groups of fixing mechanisms, the position of one group of fixing mechanisms is adjusted, and the two groups of fixing mechanisms are kept to correspond to the two ends of the steel pipe;
step two, clamping and fixing, namely respectively rotating power wheels on the two groups of fixing mechanisms to enable two adjusting beams on the fixing mechanisms to be close to each other, and clamping the end parts of the steel pipes by using four clamping claws;
step three, station adjustment, namely, driving the welding frame to move along the length direction of the rack through a pushing cylinder, and adjusting the screw rod to correspond to the gap defect;
step four, welding rods are installed, the compression arm is pulled upwards to further compress the cylindrical spring, the welding rods are installed at the end part of the lead screw, the compression arm is loosened to enable the rubber damping wheel to be tightly attached to the outer wall of the steel pipe, and the end part of the welding rods is kept attached to the surface of the steel pipe;
and step five, starting circular welding, and simultaneously connecting the welding rod and the micro motor with a power supply to weld the circular defects on the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210846789.7A CN114918593B (en) | 2022-07-19 | 2022-07-19 | Automatic welding device and welding method for steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210846789.7A CN114918593B (en) | 2022-07-19 | 2022-07-19 | Automatic welding device and welding method for steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114918593A CN114918593A (en) | 2022-08-19 |
| CN114918593B true CN114918593B (en) | 2023-01-17 |
Family
ID=82816060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210846789.7A Active CN114918593B (en) | 2022-07-19 | 2022-07-19 | Automatic welding device and welding method for steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114918593B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115781148B (en) * | 2023-01-06 | 2023-05-23 | 江苏菲达宝开电气股份有限公司 | Welding robot with leak and weld marking function |
| CN115837551B (en) * | 2023-01-13 | 2023-05-05 | 黑龙江大学 | Annular welding equipment for civil engineering construction steel pipes |
| CN116275832A (en) * | 2023-03-07 | 2023-06-23 | 艾美特焊接自动化技术(北京)有限公司 | Intelligent welding device for pipe fittings |
| CN115990731B (en) * | 2023-03-22 | 2023-06-27 | 山东鸿普自动焊接设备有限公司 | Special welding machine capable of swinging angles |
| CN116252021B (en) * | 2023-05-11 | 2023-07-28 | 江苏威雅仕不锈钢制品有限公司 | Stainless steel product welding device |
| CN116393805B (en) * | 2023-06-07 | 2023-08-11 | 福建省泉州斌利达建材有限公司 | Hollow glass aluminum spacer side welding machine and welding method thereof |
| CN116810229A (en) * | 2023-07-27 | 2023-09-29 | 河北鸿赫耐磨管道设备制造有限公司 | Automatic surfacing equipment for wear-resistant layer on inner wall of pipeline |
| CN116921952B (en) * | 2023-08-25 | 2024-06-25 | 江苏工搪化工设备有限公司 | Support leg welding equipment for glass lining equipment machining |
| CN116810240B (en) * | 2023-08-31 | 2023-11-17 | 河北沧海核装备科技股份有限公司 | Dual-purpose plate coil forming device for steel pipe welding processing |
| CN117484041B (en) * | 2023-12-27 | 2024-03-19 | 江苏久尔重工股份有限公司 | Furnace roller welding processing equipment |
| CN117564568B (en) * | 2024-01-17 | 2024-04-05 | 深圳市鸿林机械设备有限公司 | Intelligent welding equipment |
| CN117840687B (en) * | 2024-03-08 | 2024-06-04 | 山东金润德新材料科技股份有限公司 | Automatic centering device for welding stainless steel prefabricated pipeline |
| CN118002967B (en) * | 2024-04-02 | 2024-06-07 | 广东林工工业装备有限公司 | Small-size automatic weld equipment to large-scale reation kettle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202009009645U1 (en) * | 2009-07-15 | 2009-10-08 | Trischler, Franz | Further development of a hand tool for grinding and polishing |
| CN102941552A (en) * | 2012-12-08 | 2013-02-27 | 重庆天之道科技发展有限公司 | Spring perch of hand-operated rocker arm |
| CN105479045A (en) * | 2015-11-18 | 2016-04-13 | 西南石油大学 | External butt joint worktable of large-caliber pipes |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB881962A (en) * | 1959-01-21 | 1961-11-08 | Metal Box Co Ltd | Improvements in or relating to can body-making apparatus |
| JP3721960B2 (en) * | 2000-07-27 | 2005-11-30 | Ｊｆｅスチール株式会社 | Steel pipe transfer system switching device in pipe making line |
| CN105855766B (en) * | 2016-05-06 | 2017-10-03 | 哈尔滨工程大学 | A kind of welding robot for docking tubular type |
| CN106736223A (en) * | 2016-12-12 | 2017-05-31 | 宁波东方电缆股份有限公司 | A kind of welding clamping device of pipe part |
| US10448560B2 (en) * | 2017-06-30 | 2019-10-22 | Cnh Industrial America Llc | Modular toolbar with internal vacuum |
| CN111618466A (en) * | 2020-05-27 | 2020-09-04 | 段昌海 | Steel pipe annular welding device with welding seam detects function |
| CN112518218B (en) * | 2020-11-20 | 2021-11-26 | 湖北纽睿德防务科技有限公司 | Intelligent high-precision industrial welding system |
-
2022
- 2022-07-19 CN CN202210846789.7A patent/CN114918593B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202009009645U1 (en) * | 2009-07-15 | 2009-10-08 | Trischler, Franz | Further development of a hand tool for grinding and polishing |
| CN102941552A (en) * | 2012-12-08 | 2013-02-27 | 重庆天之道科技发展有限公司 | Spring perch of hand-operated rocker arm |
| CN105479045A (en) * | 2015-11-18 | 2016-04-13 | 西南石油大学 | External butt joint worktable of large-caliber pipes |
Non-Patent Citations (1)
| Title |
|---|
| 热水器内胆自动焊接线的研制;宋贵亮等;《机械工程师》;20000710(第07期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114918593A (en) | 2022-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114918593B (en) | Automatic welding device and welding method for steel pipe | |
| CN110076517B (en) | Pipe fitting connection rapid clamping device and using method thereof | |
| CN110508984B (en) | Automatic welding robot and automatic welding method thereof | |
| CN217775833U (en) | Horizontal girth welding device | |
| CN210549262U (en) | Turning clamp for welding large-diameter pipeline | |
| CN112008205A (en) | Full-automatic argon arc welding machine | |
| CN104148868A (en) | Internal supporting and external hooping non-fixing-and-spot-welding girth welder applicable to one-side welding with back formation | |
| CN115722858A (en) | Welding jig and welding machine | |
| CN104191121A (en) | Automatic welding mechanism for circumferential welds | |
| CN205325025U (en) | Pipe flange welding special plane | |
| KR20200048243A (en) | Modular jig device for pipe welding | |
| CN113199133A (en) | Angle-adjustable conical cylinder annular seam friction stir welding device and welding method | |
| CN116100178A (en) | Correction butt joint method for large pipe fitting before welding | |
| CN1060425A (en) | The added thread method and apparatus in the major thread hole of packing into | |
| CN101045274A (en) | Equipment for automatically welding longitudinal arched seam of large elbow | |
| CN211072461U (en) | High-precision steel pipe joint surrounding welding tool | |
| CN115922161B (en) | Self-distance-adjusting pipeline welding robot | |
| CN110681897A (en) | Portable milling and cutting device and method for special-shaped holes of pipelines | |
| CN216912759U (en) | Welding device for special steel cylinder base | |
| CN110340546B (en) | Pneumatic chuck for laser cutting machine | |
| CN201572997U (en) | Multifunctional argon-arc automatic welding machine tool | |
| CN217344083U (en) | Pressure vessel girth welding device | |
| CN116352228A (en) | Steel pipe welding device | |
| CN114654046A (en) | Oil-well rig winch drum body welding set | |
| CN214109798U (en) | Inner ring welding seam sharpening machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |