CN105458475A - Automatic double-wire sub-merged arc welding device built in helical tube former and positioning method for automatic double-wire sub-merged arc welding device - Google Patents
Automatic double-wire sub-merged arc welding device built in helical tube former and positioning method for automatic double-wire sub-merged arc welding device Download PDFInfo
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- CN105458475A CN105458475A CN201610021329.5A CN201610021329A CN105458475A CN 105458475 A CN105458475 A CN 105458475A CN 201610021329 A CN201610021329 A CN 201610021329A CN 105458475 A CN105458475 A CN 105458475A
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- 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
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Abstract
The invention discloses an automatic double-wire sub-merged arc welding device built in a helical tube former. The automatic double-wire sub-merged arc welding device comprises a primary positioning structure (1), an axle spread corner regulating mechanism (2), a welding set regulating mechanism (3) and a welding gun (4), wherein the welding gun (4) is fixed to the welding set regulating mechanism (3); the welding set regulating mechanism (3) comprises a rectangular fixing framework (3.1), a welding set lifting mechanism (3.2), a welding set left-right regulating device (3.3) and a welding set corner regulating device (3.4); the rectangular fixing framework (3.1) is fixed on the positioning frame (1); the welding set lifting mechanism (3.2) is fixed to the rectangular fixing framework (3.1); the welding set left-right regulating device (3.3) is fixed to the axle spread corner regulating mechanism (2); an axial linear drive (2.2) is fixed on a welding gun bracket (2.1); and a corner bracket (2.3) is fixed on the axial linear drive. The automatic double-wire sub-merged arc welding device built in the helical tube former disclosed by the invention is easy to position, and is easy to realize welding seam automatic tracking.
Description
Technical field
The invention belongs to helix tube welding technology field, be specifically related to a kind of Double-wire submerged arc welding apparatus be built in helix tube molding machine.
Background technology
Spiral welded pipe has inside and outside two spiral welds, plays and increases the effect of steel pipe rigidity, the intensity of steel pipe is improved.The stress that spiral welded pipe weld seam bears reduces 10-25% than the straight welded pipe welding-seam of same diameter.Owing to being spiral forming, the pipe of production department is directly spent, and size is accurate, and deviation is generally no more than 0.12%.In spiral welded pipe production process, monofilament submerged arc welding machine has simple to operate, dependable performance, moderate, there is higher welding efficiency and good welding quality, but monofilament bonding wire energy is little, cooling velocity is fast, especially in the winter that the north is cold, easily produce weld defect, speed of welding is slow, and improve speed of welding be difficult to ensure weldquality, long production efficiency consuming time is low.Along with the product specification wall thickness of two-sided Seam of SAW Spiral Steel Pipe constantly increases, the welding of inside and outside weld seam also progressively increases to mariages or three from original monofilament.Wire submerged arc welding machine adopts 2 independently sources of welding current, and 2 arcings are in same molten bath, and longitudinal separation is no more than 40mm, and first electric arc forms fusion penetration, by workpiece penetration; Second electric arc forms capping, and welding once completes.Be characterized in: (1) is energy-conservation, compare single arc welding, the welding of high speed effectively reduces the energy loss of workpiece that workpiece brings because of post bake and solder flux; (2) at a high speed, the molten bath that twin arc is formed when welding is longer, metal time when its solid melt is longer, relative to cooling velocity during single electric arc and Thermal Cycling slower, the trace element of weld seam has the long period to spread, and the eutectic of low melting point decreases component segregation because of the reduction of degree of supercooling.(3) in the weld job of high speed, single electric arc converges due to energy density, and cause electric arc penetration power extremely strong, deposite metal has little time spread out and make weld seam present tapered cross-section, improves under the condition that this point is welded at double-arc tournaments.
In existing wire submerged arc welding machine, there is several key issue: the 1) location of solder joint and weld seam; 2) parameter adjustment, the adjustment at welding wire inclination angle; The adjustment of distance between weldingwires; The adjustment of electrode extension, keeps solder flux piling height; 3) dynamically weld seam is followed the tracks of.Above-mentioned key issue does not form a suitable simple structure and solves for the purpose of " operate the most convenient, cost is minimum ".
The double wire hidden arc welding equipment of the CN202180825U of Beijing Zhong electricity Hua strong weld Engineering Co., Ltd, servo cross balladeur train 21 is fixedly mounted by base, though can up and down and move left and right, but can not move forward and backward, and the both sides of existing SSAW pipe unit can only be arranged on, operation inconvenience, can not organically blend with SSAW pipe unit.Rotation angle mechanism 10,11 blocks with fixed angle close to each other, corner bind with distance and regulates, it is inconvenient to adjust; Flux delivery mouth separately, has front welding gun solder flux to assist delivery nozzle 5 and the main delivery nozzle 13 of solder flux, adds the difficulty of solder flux holding structure and welding vibrational structure.
Britain GB794275A discloses a kind of Double Wire Welding device, and its pad localization relies on sleeve to slide on bar 29 and adjusts location, and welding gun 21,23 is articulated on bar 24, and bar 24 is linked by half arc and is connected on cross bar, and described cross bar is connected in frame bars 17.It is symmetrical, can manual adjustments, but lacks the architecture basics that automation regulates.
Design the Double-wire submerged arc welding apparatus on a kind of helix tube molding machine, both the basic demand of the adjustment of weldering knot technological parameter had been met, also the weld seam of special diameter spiral welded pipe and the location of solder joint is met, also be easy to the dynamic tracking realizing weld seam simultaneously, structure is simply located conveniently, satisfactorily resolving above-mentioned at least two key issues, is a designer's difficult problem really.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of spiral submerged arc twin wire automatic welding welder.
The present invention realizes like this, a kind of twin wire automatic welding hidden arc welding device be built in helix tube molding machine, comprise elementary location structure, wheelbase corner guiding mechanism, soldering set guiding mechanism and welding gun, described welding gun is fixed on described soldering set guiding mechanism (3), described elementary location structure comprises locating rack, track and is fixed bolt, and described locating rack point midway is provided with symmetry axis; Described locating rack is provided with walking mechanism with the vertical plane perpendicular to locating rack (л) crossing symmetry axis axisymmetrically for symmetrical plane; Described locating rack is fixed in the rail groove of equipment portal frame of described helix tube molding machine adjustably by track, and fixes by being fixed bolt;
Described soldering set guiding mechanism comprises fixed frame, soldering set elevating mechanism, soldering set right-left adjusting device and soldering set angle regulator, and described fixed frame is fixed on described locating rack, and described soldering set elevating mechanism is fixed on described fixed frame; Described soldering set right-left adjusting device is fixed on described wheelbase corner guiding mechanism, and described soldering set right-left adjusting device connects soldering set angle regulator, and described soldering set angle regulator is fixed with welding gun;
Described wheelbase corner guiding mechanism is fixedly mounted on described soldering set elevating mechanism; Described wheelbase corner guiding mechanism comprises welding gun support, axial linear drives and bracket at corner, described welding gun support is fixed on described soldering set elevating mechanism, welding gun support is fixed with axial linear drives, and described bracket at corner is fixed in described axial linear drives;
Soldering set right-left adjusting device is to cross the vertical plane perpendicular to locating rack of symmetry axis for symmetrical plane is axisymmetrically on described bracket at corner, described bracket at corner can pivot certain angle and locate, described pivot be positioned at cross symmetry axis perpendicular on the vertical plane of locating rack.
Further, described walking mechanism is that on locating rack, be provided with slide rail axisymmetrically, slide rail be sliding combined with running roller bearing, described running roller bearing is provided with walking running roller with the vertical plane perpendicular to locating rack crossing symmetry axis for symmetrical plane.
Further, described soldering set elevating mechanism comprises lifting motor, lifting decelerator and elevating screw, and the output shaft of described lifting motor connects elevating screw by lifting decelerator; Described elevating screw drives lifting nut, and described lifting nut is fixedly connected with described welding gun support.
Further, described soldering set right-left adjusting device comprises adjustment support, and described adjustment support is provided with adjusting screw, and on described adjusting screw, threaded engagement has welding gun slide; Described welding gun slide is provided with adjusting nut, and adjusting screw one end fits is in adjusting nut, and the other end to be fixed on described adjustment support and to be provided with regulating handle or to be provided with left and right adjusting servomotor.
Further, described axial linear drives comprises leading screw, nut and linear drives servomotor, and leading screw described in described linear drives driven by servomotor rotates.
Further, described soldering set angle station comprises corner seat and angular servo-motor, and described corner seat is articulated on described welding gun slide, and described welding gun is fixed on corner seat, and angular servo-motor drives described corner seat to rotate around drive-connecting shaft.
Further, described bracket at corner comprises pivot, bearing, rolling disc, angular transducer, rotating servo motor, described adjustment support is located on described rolling disc, and described rotating servo motor drives rolling disc and described adjustment support pivotally to rotate at a certain angle.
Described in be built in the localization method of the twin wire automatic welding hidden arc welding device in helix tube molding machine,
Comprise elementary positioning step, when the spiral welded pipe of a new model needs to produce, adjust the position of described locating rack in the equipment portal frame chute of described helix tube molding machine, make pivot by the soldered spiral steel pipe center of circle thus described twin wire automatic welding hidden arc welding device is located in Y-direction, the adjustment walking position of running roller on slide rail, makes described two walking running rollers and welding wire intersection point 3 place circular arcs and described soldered spiral steel pipe concentric; Locating rack is arranged on equipment portal frame, make the location of welding gun by means of portal frame X, Z-direction location, make pivot right through the center of circle of welded spiral steel pipe by the swing of spiral forming unit, carry out elementary location to the location adjustment of described twin wire automatic welding hidden arc welding device how centering weld seam.
Further, also comprise two-stage positioning step, after completing elementary location, the corner setting described wheelbase corner guiding mechanism is consistent by the angle between the vertex tangent of Coiling Welded Pipe spiral weld and steel pipe axis with described; Adjustment soldering set elevating mechanism, soldering set right-left adjusting device and soldering set angle station, to make before and after front welding wire, rear welding wire centering weld seam there is certain distance respectively, adjustment welding wire anchor point, make front welding wire, rear welding wire and welding wire anchor point three on straight line, and welding wire anchor point centering weld seam, completes two-stage positioning.
The above-mentioned twin wire automatic welding hidden arc welding device be built in helix tube molding machine carries out elementary location and two-stage positioning, easy to adjust, is easy to the realization of dynamic seam tracking system.
Be built in an automatic seam tracking method for the twin wire automatic welding hidden arc welding device in helix tube molding machine,
Locating rack is provided with tracking slide rail perpendicular to the vertical plane of locating rack, and described slide block rail is parallel with the X axis of the axis of welded spiral steel pipe; Slide block is arranged on described slide rail, is provided with actual welds tracking transducer below described slide block, and described actual actual welds tracking transducer is vertically projected to the actual welds anchor point O on the weld seam of welded spiral steel pipe
5(x
5, y
5); Described slide block is driven by tracking servo motor;
Be provided with welding wire locator at front welding wire side, described welding wire locator is vertically projected to the welding wire anchor point O of welded spiral steel pipe
4(x
4, y
4);
After the localization method of the described twin wire automatic welding hidden arc welding device be built in helix tube molding machine completes elementary positioning step and two-stage positioning step, monitor the position relationship between welding wire anchor point and the weld seam of welded spiral steel pipe at any time, with the axis of welded spiral steel pipe for X-axis, detect welding wire anchor point O with certain frequency
4(x
4, y
4) and weld and HAZ point O
5(x
5, y
5), calculate welding wire anchor point O
4(x
4, y
4) and actual welds anchor point O
5(x
5, y
5) between X-direction distance, delta d
x=x
5-x
4;
Make the following judgment:
1) if Δ d
x=0 is continued monitoring;
2) if Δ d
x> 0, then start linear drives servomotor and move described rolling disc 2.3.3 distance along X-direction negative sense | Δ d
x|;
The automatic seam tracking method of the described twin wire automatic welding hidden arc welding device be built in helix tube molding machine, due to the basic role of elementary location and two-stage positioning, make to follow the tracks of weld seam only need be sewn on axis and X-direction error by tracking welding, and adjust linear drives in real time, front welding wire, rear welding wire are moved a certain distance together forward or backward can realize weld seam from motion tracking, make soldering joint automatic tracking become simply easy.
The present invention achieves spiral Double Wire Welding by the mutual promoting action of following technical spirit and there is several key issue: the 1) location of solder joint and weld seam; 2) parameter adjustment, the adjustment at welding wire inclination angle; The adjustment of distance between weldingwires; The adjustment of electrode extension, keeps solder flux piling height; 3) dynamically weld seam is followed the tracks of.
(1) elementary location structure, ensures that the pivot 2.4 between front welding wire 5.1, rear welding wire 5.2 is positioned at the most summit of weld seam circular arc;
(2) described wheelbase corner guiding mechanism, completes two-stage positioning, ensures that the corner α of described wheelbase corner guiding mechanism 2 is consistent by the angle between the vertex tangent of Coiling Welded Pipe spiral weld and steel pipe axis with described;
On the basis of tram, soldering set guiding mechanism ensures adjusting to the right place of welding condition, ensures to form qualified weld seam at correct position while welding;
(3) on the basis of tram, the tracking of weld joint tracking only surplus X-axis, soldering set also only needs the axial linear drives adjustment position of bracket at corner in X-axis with the automatic adjustment of weld seam, simplify weld seam from motion tracking.
The described twin wire automatic welding hidden arc welding device be built in helix tube molding machine is easy to location, is easy to realize soldering joint automatic tracking.
Described spiral submerged arc twin wire automatic welding welder, extends cool time, ensure that weldquality, decrease weld defect, improve working environment when improving speed of welding.For next process creates favorable conditions, decrease that repair welding amount saves material resources, financial resources, manpower reduce manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the front view of spiral submerged arc twin wire automatic welding welder of the present invention.
Fig. 2 is the top view of spiral submerged arc twin wire automatic welding welder of the present invention.
Fig. 3 is the left view of spiral submerged arc twin wire automatic welding welder of the present invention.
Fig. 4 is the welding gun front view of spiral submerged arc twin wire automatic welding welder of the present invention.
Fig. 5 is the soldering joint automatic tracking schematic diagram of spiral submerged arc twin wire automatic welding welder of the present invention.
Reference numeral in above-mentioned figure:
1, locating rack, 2, wheelbase corner guiding mechanism, 3, soldering set guiding mechanism, 4, welding gun, 5 welding wires, 16 symmetry axis
л crosses the vertical plane perpendicular to locating rack of symmetry axis, л
1the common plane of front welding wire 5.1 and rear welding wire 5.2 and pivot 2.4
1.1 locating racks, 1.2 tracks, 1.3 walking mechanisms
1.3.1 slide rail, 1.3.2 running roller bearing, 1.3.3 walks running roller
2.1 welding gun supports, 2.2 axial linear drives, 2.3 bracket at corners, 2.4 pivots
3.1 fixed frames, 3.2 soldering set elevating mechanisms, 3.3 soldering set right-left adjusting devices, 3.4 soldering set angle regulators
3.2.1 lifting motor, 3.2.2 lifting decelerator, 3.2.3 elevating screw, 3.2.4 lifting nut
3.3.1 support is regulated, 3.3.2 adjusting screw, 3.3.3 regulating handle, 3.3.4 welding gun slide
3.4.1 corner seat
4.2 wire feed rolls, 4.3 electric conductors, 4.4 conductive sliders, 4.5 wire feeding motors, 4.6 corner seats, 4.7 wire feed rolls fixed mounts, 4.8 compact heaps
Welding wire before 5.1, welding wire after 5.2
6.1 follow the tracks of slide rail, 6.2 slide blocks
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but be not used for limiting the scope of the invention.
Shown in figure 1-3, a kind of twin wire automatic welding hidden arc welding device be built in helix tube molding machine, comprise elementary location structure 1, wheelbase corner guiding mechanism 2, soldering set guiding mechanism 3 and welding gun 4, described welding gun 4 is fixed on described soldering set guiding mechanism 3, described elementary location structure 1 comprises locating rack 1.1, track 1.2 and is fixed bolt, and described locating rack 1.1 point midway is provided with symmetry axis; Described locating rack is provided with walking mechanism 1.3 with the vertical plane л perpendicular to locating rack crossing symmetry axis axisymmetrically for symmetrical plane; Described locating rack 1.1 is fixed in the rail groove of equipment portal frame of described helix tube molding machine adjustably by track 1.2, and fixes by being fixed bolt;
Described soldering set guiding mechanism 3 comprises fixed frame 3.1, soldering set elevating mechanism 3.2, soldering set right-left adjusting device 3.3 and soldering set angle regulator 3.4, described fixed frame 3.1 is fixed on described locating rack 1, and described soldering set elevating mechanism 3.2 is fixed on described fixed frame 3.1; Described soldering set right-left adjusting device 3.3 is fixed on described wheelbase corner guiding mechanism 2, and described soldering set right-left adjusting device 3.3 connects soldering set angle regulator 3.4, and described soldering set angle regulator 3.4 is fixed with welding gun 4;
Described wheelbase corner guiding mechanism 2 is fixedly mounted on described soldering set elevating mechanism 3.2; Described wheelbase corner guiding mechanism 2 comprises welding gun support 2.1, axial linear drives 2.2 and bracket at corner 2.3, described welding gun support 2.1 is fixed on described soldering set elevating mechanism, welding gun support 2.1 is fixed with axial linear drives 2.2, and described bracket at corner 2.3 is fixed in described axial linear drives;
Described walking mechanism 1.3 is for symmetrical plane with the vertical plane л perpendicular to locating rack crossing symmetry axis 16, slide rail 1.3.1 is provided with axisymmetrically on locating rack 1.1, slide rail 1.3.1 is sliding combined with running roller bearing 1.3.2, described running roller bearing 1.3.2 is provided with walking running roller 1.3.3.
Described soldering set elevating mechanism 3.2 comprises lifting motor 3.2.1, lifting decelerator 3.2.2 and elevating screw 3.2.3, and the output shaft of described lifting motor 3.2.1 connects elevating screw 3.2.3 by lifting decelerator 3.2.2; Described elevating screw 3.2.3 drives lifting nut 3.2.4, and described lifting nut 3.2.4 is fixedly connected with described welding gun support 2.1.
Described soldering set right-left adjusting device 3.3 comprises adjustment support 3.3.1, and described adjustment support 3.3.1 is provided with adjusting screw 3.3.2, and on described adjusting screw 3.3.2, threaded engagement has welding gun slide 3.3.4; Described welding gun slide 3.3.4 is provided with adjusting nut, and adjusting screw 3.3.2 one end fits is in adjusting nut, and the other end to be fixed on described adjustment support 3.3.1 and to be provided with regulating handle 3.3.3 or to be provided with left and right adjusting servomotor.
Described axial linear drives 2.2 comprises leading screw, nut and linear drives servomotor, and leading screw described in described linear drives driven by servomotor rotates.
Described soldering set angle station 3.4 comprises corner seat 3.4.1 and angular servo-motor, described corner seat 3.4.1 is articulated on described welding gun slide 3.3.4, described welding gun 4 is fixed on corner seat 3.4.1, and angular servo-motor drives described corner seat 3.4.1 to rotate around drive-connecting shaft.
Described bracket at corner 2.3 comprises bearing, rolling disc, angular transducer, rotating servo motor, described adjustment support 3.3.1 wears and is fixed on described rolling disc 2.3.3, and described rotating servo motor driving rolling disc 2.3.3 and described adjustment support 3.3.1 can pivotally 2.4 rotations at a certain angle.
Soldering set right-left adjusting device 3.3 is to cross the vertical plane л perpendicular to locating rack of symmetry axis for symmetrical plane is axisymmetrically on described bracket at corner 2.3, described bracket at corner 2.3 can pivotally 2.4 turn an angle and locate, described pivot 2.4 be positioned at cross symmetry axis perpendicular on the vertical plane л of locating rack.
Preferably, described front welding wire 5.1, rear welding wire 5.2 and described pivot 2.4 are at same common plane л
1in, this common plane is by the tangent line L on weld seam summit.
Described linear drives is adjusting screw, described adjusting screw is combined with welding gun slide 3.3.4, described welding gun slide 3.3.4 is articulated with corner seat 4.6, and described welding gun 4 is fixed on corner seat 4.6, and angular servo-motor 4.6 drives described corner seat 4.6 to rotate around drive-connecting shaft;
As shown in Figure 4, described welding gun 4 comprises wire feed rolls fixed mount 4.7, electric conductor 4.3, conductive slider 4.4.Wire feed rolls fixed mount 4.7 rotates and is provided with a pair wire feed rolls 4.2, fixedly mount electric conductor 4.3 below wire feed rolls fixed mount 4.7, described electric conductor 4.3 connects conductive slider 4.4.Described wire feed rolls 4.2, electric conductor 4.3 and conductive slider 4.4 are run through in one wire feed hole.Wire feeding motor 4.5 drive a wire feed rolls 4.2 to rotate two wire feed rolls 4.2 between welding wire 5 deliver to outside plumb joint from wire feed hole; Be provided with compact heap 4.8 outside described adjusting slider 4.4, described compact heap 4.8 compresses described adjusting slider 4.4 by hold-down mechanism;
Preferably, described adjustment support 3.3.1 is also substitutable for L shaped plate;
Preferably, the long side plate of described L shaped plate and described rolling disc 2.3.3 one-body molded;
Preferably, described locating rack 1.1 is one-body molded with described fixed frame 3.1;
Described adjusting screw 3.3.2 end is provided with adjusting handle 3.3.3 or servomotor; Described welding gun slide is provided with adjusting nut, and adjusting screw 3.3.2 one end fits is in adjusting nut, and the other end to be fixed on described adjustment support 3.3.1 and to be provided with regulating handle or to be provided with left and right adjusting servomotor.
Described welding gun 4 is two, arranges the welding wire of different-diameter respectively, different electrical power, and such as one is AC power, and one is dc source.Preferably, one is gage of wire is 4.0mm dc source, and gage of wire is 3.2mm AC power.
Described locating rack 1 is preferably sight rail; Described sight rail is fixed on the equipment portal frame of described spiral forming unit adjustably, and the described fixing equipment portal frame that is preferably adjustably is provided with guide groove, and the guiding that described locating rack is provided with guide rail coordinates; The preferred dovetail groove of guide groove;
Comprise elementary positioning step, when the spiral welded pipe of a new model needs to produce, adjust the position of described locating rack 1 in the equipment portal frame chute of described helix tube molding machine, make pivot 2.4 by the soldered spiral steel pipe center of circle thus described twin wire automatic welding hidden arc welding device is located in Y-direction, the adjustment walking position of running roller 1.3.3 on slide rail 1.3.1, makes described two walking running roller 1.3.3 and welding wire intersection point 3 place circular arcs and described soldered spiral steel pipe concentric; Locating rack 1 is arranged on equipment portal frame, make the location of welding gun by means of portal frame X, Z-direction location, make pivot 2.4 right through the center of circle of welded spiral steel pipe by the swing of spiral forming unit, carry out elementary location to the location adjustment of described twin wire automatic welding hidden arc welding device how centering weld seam.
In order to accurate positioning, the lower end axis of described pivot 2.4 is provided with the tip circle cambered surface intersection point O of axis and the welded spiral steel pipe that pivot 2.4 can be detected
1(x
1, y
1) High sensitive light-position sensor of position coordinates, the rotating shaft of described walking running roller 1.3.3 is equipped with and can detects running roller and welded spiral welded pipe contact point O
2(x
2, y
2), O
3(x
3, y
3) the High sensitive light-position sensor of position coordinates, by calculating this center of circle O of 3.Described " making pivot 2.4 right through the center of circle of welded spiral steel pipe ", calculates described circular arc arc (O
1, O
2, O
3) center of circle O (x, y), judge described center of circle O (x, y) whether on the axis of pivot 2.4;
Described " making pivot 2.4 right through the center of circle of welded spiral steel pipe ", preferably, the lower end axis of described pivot 2.4 is provided with tip circle cambered surface intersection point and the weld seam summit O of axis and the welded spiral steel pipe that pivot 2.4 can be detected
1(x
1, y
1) High sensitive light-position sensor of position coordinates, the rotating shaft of described walking running roller 1.3.3 is equipped with and can detects running roller and welded spiral welded pipe contact point O
2(x
2, y
2), O
3(x
3, y
3) the High sensitive light-position sensor of position coordinates; Calculate described circular arc arc (O
1, O
2, O
3) center of circle O (x, y), judge described center of circle O (x, y) whether on the axis of pivot 2.4;
Also comprise two-stage positioning step, after completing elementary location, the corner α setting described wheelbase corner guiding mechanism 2 is consistent by the angle between the vertex tangent of Coiling Welded Pipe spiral weld and steel pipe axis with described; Adjustment soldering set elevating mechanism, soldering set right-left adjusting device and soldering set angle station, to make before and after front welding wire 5.1, rear welding wire 5.2 centering weld seam there is certain distance respectively, the welding wire anchor point of adjustment welding wire alignment sensor, make front welding wire 5.1, rear welding wire 5.2 and welding wire anchor point three on straight line, and welding wire anchor point centering weld seam, completes two-stage positioning.
Described locating rack is fixedly mounted on adjustably on the portal frame of described spiral forming unit, the Y-direction adjustment position of guide rail in guide groove, the position of running roller 1.3.3 on slide rail 1.3.1 of adjustment walking simultaneously, ensure that symmetry axis 16 crosses the soldered spiral steel pipe center of circle, so just facilitate front welding wire 5.1, rear welding wire 5.2 and welding wire anchor point three one location of straight line, also facilitate front welding wire 5.1, rear welding wire 5.2 centering weld seam simultaneously.Locating rack is so accurately arranged on portal frame, the benefit done like this makes the location of welding gun by means of portal frame X, Z-direction location, make welding gun symmetry axis 16 right through the center of circle of welded spiral steel pipe by the swing of spiral forming unit, do elementary location to the location adjustment of Double Wire Welding device how centering weld seam.Like this, the adjustment of the location of front welding wire 5.1, rear welding wire 5.2 centering weld seam, front welding wire 5.1, rear welding wire 5.2 and welding wire anchor point three one the adjustment of location of straight line also become on the basis of elementary location and be more prone to.This is referred to as two-stage positioning, and lays the basis of good elementary location for the dynamic conditioning realizing two-stage positioning.
When Double Wire Welding device works, connect power supply opening electric welding machine, steel pipe by delivery machine along X plane and straight line advance access arrangement portal frame, also locating rack 1 is just entered, the walking running roller 1.3.3 of locating rack 1 walks on steel pipe along steel pipe axis, the distance of conductive slider 4.4 and steel pipe is adjusted by lifting motor 3.2.1, 1# and 2# welding wire is sent in electric conductor 4.3 through the constant-speed wire-feeding of wire feeding motor 4.5, then conductive slider 4.4 head 25-35mm is stretched out, adjusting screw 3.3.2 is rotated again with regulating handle 3.3.4, regulate the 1# welding wire of left and right conductive slider 4.4, 2# distance between weldingwires is 8mm-20mm, 1# welding wire, the welding wire angle of 2# welding wire keeps 30 °, welding wire emersion conductive slider 4.4 is good to 25-35mm, 1# welding wire and 2# welding wire are aligned to groove part, keep 1# with 2# welding wire into a line with indicator lamp and vertical with become groove part, after the elementary location and two-stage positioning of locating adjustment complete, after indicator lamp prompting, connect solder flux and start power supply, two root wire 1#, 2# forms welding bead attractive in appearance a molten bath fusing.Above-mentioned Double Wire Welding carries out elementary location and two-stage positioning, easy to adjust, is easy to the realization of dynamic seam tracking system.Dynamic automatic seam tracking method only need follow the tracks of the X axis distance between the welding wire anchor point on weld seam actual point and front welding wire point side, if distance is not equal to 0, then represent welding seam bias, only needing linear drive apparatus to move forward and backward rolling disc along welded helix tube axis direction can realize.Concrete grammar is as follows,
Through lot of experiments, the skew of discovery actual welds is generally because the error of width of steel band causes, and generally show as the skew of weld seam at steel pipe axis direction time on the steel pipe that the errors table of width of steel band is rolled into now, as long as therefore install actual welds identification laser locator, difference according to steel pipe seam and non-weld seam identifies the physical location of weld seam at steel pipe axis direction automatically, then can realize weld seam from motion tracking.
As shown in Fig. 2,5, a kind of automatic seam tracking method of the twin wire automatic welding hidden arc welding device be built in helix tube molding machine,
Described front welding wire 5.1, rear welding wire 5.2 and described pivot 2.4 are at same common plane л
1in, this common plane is by the tangent line L on weld seam summit; That is, the corner α of described wheelbase corner guiding mechanism 2 is consistent by the angle between the vertex tangent of Coiling Welded Pipe spiral weld and steel pipe axis with described;
Locating rack 1 is provided with perpendicular to the vertical plane (л) of locating rack and follows the tracks of slide rail 6.1, described slide block rail 6.1 is parallel with the X axis of the axis of welded spiral steel pipe; Slide block 6.2 is arranged on described slide rail 6.1, is provided with optoelectronic contact type welded seam tracing sensor below described slide block 6.2, and described optoelectronic contact type welded seam tracing sensor is vertically projected to the actual welds anchor point O on the weld seam of welded spiral steel pipe
5(x
5, y
5); Described slide block is driven by tracking servo motor;
Be provided with welding wire photoelectric sensor at front welding wire 5.1 side apart from front welding wire 5-10mm, described welding wire photoelectric sensor is vertically projected to the welding wire anchor point O of welded spiral steel pipe
4(x
4, y
4);
After the localization method of the described twin wire automatic welding hidden arc welding device be built in helix tube molding machine completes elementary positioning step and two-stage positioning step, monitor the position relationship between welding wire anchor point and the actual welds anchor point of welded spiral steel pipe at any time, with the axis of welded spiral steel pipe for X-axis, detect welding wire anchor point O with certain frequency
4(x
4, y
4) and weld and HAZ point O
5(x
5, y
5), calculate welding wire anchor point O
4(x
4, y
4) and actual welds anchor point O
5(x
5, y
5) between X-direction distance, delta d
x=x
5-x
4; Make the following judgment:
1) if Δ d
x=0 is continued monitoring;
2) if Δ d
x> 0, then start linear drives servomotor and move described rolling disc 2.3.3 distance along X-direction negative sense | Δ d
x|;
3) if Δ d
x< 0, then start linear drives servomotor and move described rolling disc 2.3.3 distance along X-direction forward | Δ d
x|;
Described spiral submerged arc twin wire automatic welding welder, extends cool time, ensure that weldquality, decrease weld defect, improve working environment when improving speed of welding.For next process creates favorable conditions, decrease that repair welding amount saves material resources, financial resources, manpower reduce manufacturing cost.
Claims (10)
1. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine, comprise elementary location structure (1), wheelbase corner guiding mechanism (2), soldering set guiding mechanism (3) and welding gun (4), described welding gun (4) is fixed on described soldering set guiding mechanism (3), it is characterized in that
Described elementary location structure (1) comprises locating rack (1.1), track (1.2) and is fixed bolt, and described locating rack (1.1) point midway is provided with symmetry axis; Described locating rack is provided with walking mechanism (1.3) with the vertical plane perpendicular to locating rack (π) crossing symmetry axis axisymmetrically for symmetrical plane; Described locating rack (1.1) is fixed in the rail groove of equipment portal frame of described helix tube molding machine adjustably by track (1.2), and fixes by being fixed bolt;
Described soldering set guiding mechanism (3) comprises fixed frame (3.1), soldering set elevating mechanism (3.2), soldering set right-left adjusting device (3.3) and soldering set angle regulator (3.4), described fixed frame (3.1) is fixed on described locating rack (1), and described soldering set elevating mechanism (3.2) is fixed on described fixed frame (3.1); Described soldering set right-left adjusting device (3.3) is fixed on described wheelbase corner guiding mechanism (2), described soldering set right-left adjusting device (3.3) connects soldering set angle regulator (3.4), and described soldering set angle regulator (3.4) is fixed with welding gun (4);
Described wheelbase corner guiding mechanism (2) is fixedly mounted on described soldering set elevating mechanism (3.2); Described wheelbase corner guiding mechanism (2) comprises welding gun support (2.1), axial linear drives (2.2) and bracket at corner (2.3), described welding gun support (2.1) is fixed on described soldering set elevating mechanism, welding gun support (2.1) is fixed with axial linear drives (2.2), and described bracket at corner (2.3) is fixed in described axial linear drives;
Soldering set right-left adjusting device (3.3) is fixed on described bracket at corner (2.3) with the vertical plane perpendicular to locating rack (π) crossing symmetry axis for symmetrical plane axisymmetrically, described bracket at corner (2.3) can pivotally (2.4) turn an angle and locate, and described pivot (2.4) is positioned at on the vertical plane perpendicular to locating rack (π) crossing symmetry axis.
2. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 1, it is characterized in that, described walking mechanism (1.3) is for symmetrical plane with the vertical plane perpendicular to locating rack (π) crossing symmetry axis (16), slide rail (1.3.1) is provided with axisymmetrically on locating rack (1.1), slide rail (1.3.1) is sliding combined with running roller bearing (1.3.2), described running roller bearing (1.3.2) is provided with walking running roller (1.3.3).
3. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 2, it is characterized in that, described soldering set elevating mechanism (3.2) comprises lifting motor (3.2.1), lifting decelerator (3.2.2) and elevating screw (3.2.3), and the output shaft of described lifting motor (3.2.1) connects elevating screw (3.2.3) by lifting decelerator (3.2.2); Described elevating screw (3.2.3) drives lifting nut (3.2.4), and described lifting nut (3.2.4) is fixedly connected with described welding gun support (2.1).
4. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 1, it is characterized in that, described soldering set right-left adjusting device (3.3) comprises adjustment support (3.3.1), described adjustment support (3.3.1) is provided with adjusting screw (3.3.2), and the upper threaded engagement of described adjusting screw (3.3.2) has welding gun slide (3.3.3); Described welding gun slide (3.3.3) is provided with adjusting nut, adjusting screw (3.3.2) one end fits is in adjusting nut, and the other end is fixed on described adjustment support (3.3.1) and goes up and be provided with regulating handle (3.3.4) or be provided with left and right adjusting servomotor.
5. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 1, it is characterized in that, described axial linear drives (2.2) comprises leading screw, nut and linear drives servomotor, and leading screw described in described linear drives driven by servomotor rotates.
6. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 4, it is characterized in that, described soldering set angle station (3.4) comprises corner seat (3.4.1) and angular servo-motor, described corner seat (3.4.1) is articulated on described welding gun slide (3.3.3), described welding gun (4) is fixed on corner seat (3.4.1), and angular servo-motor drives described corner seat (3.4.1) to rotate around drive-connecting shaft.
7. one kind is built in the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 4, it is characterized in that, described bracket at corner (2.3) comprises bearing, rolling disc, angular transducer, rotating servo motor, described adjustment support (3.3.1) wears and is fixed on described rolling disc, and described rotating servo motor drives rolling disc and described adjustment support (3.3.1) at a certain angle pivotally (2.4) to rotate.
8. be built in a localization method for the twin wire automatic welding hidden arc welding device in helix tube molding machine as described in as arbitrary in claim 2-6, it is characterized in that,
Comprise elementary positioning step, when the spiral welded pipe of a new model needs to produce, adjust the position of described locating rack (1) in the equipment portal frame chute of described helix tube molding machine, make pivot (2.4) by the soldered spiral steel pipe center of circle thus described twin wire automatic welding hidden arc welding device is located in Y-direction, adjustment walking running roller (1.3.3) position on slide rail (1.3.1), makes described two walkings running roller (1.3.3) and welding wire intersection point 3 place circular arcs and described soldered spiral steel pipe concentric; Locating rack is arranged on equipment portal frame, make the location of welding gun by means of portal frame X, Z-direction location, make pivot (2.4) right through the center of circle of welded spiral steel pipe by the swing of spiral forming unit, carry out elementary location to the location adjustment of described twin wire automatic welding hidden arc welding device how centering weld seam.
9. be built in a localization method for the twin wire automatic welding hidden arc welding device in helix tube molding machine as claimed in claim 7, it is characterized in that,
Also comprise two-stage positioning step, after completing elementary location, the corner (α) setting described wheelbase corner guiding mechanism (2) is consistent by the angle between the vertex tangent of Coiling Welded Pipe spiral weld and steel pipe axis with described; Adjustment soldering set elevating mechanism, soldering set right-left adjusting device and soldering set angle station, to make before and after front welding wire (5.1), rear welding wire (5.2) centering weld seam there is certain distance respectively, adjustment laser positioning point, make on front welding wire (5.1), rear welding wire (5.2) and laser positioning point three straight line, and laser positioning point centering weld seam, completes two-stage positioning.
10. as described in as arbitrary in claim 1-9, be built in an automatic seam tracking method for the twin wire automatic welding hidden arc welding device in helix tube molding machine,
Locating rack (1) is provided with perpendicular to the vertical plane (π) of locating rack and follows the tracks of slide rail (6.1), described slide block rail (6.1) is parallel with the X axis of the axis of welded spiral steel pipe; Slide block (6.2) is arranged on described slide rail (6.1), and described slide block (6.2) below is provided with weld seam tracking sensor, and described weld seam tracking sensor is vertically projected to the actual welds anchor point O on the weld seam of welded spiral steel pipe
5(x
5, y
5); Described slide block is driven by tracking servo motor;
Be provided with welding wire locator at front welding wire (5.1) side, described welding wire locator is vertically projected to the welding wire anchor point O of welded spiral steel pipe
4(x
4, y
4);
After the localization method of the described twin wire automatic welding hidden arc welding device be built in helix tube molding machine completes elementary positioning step and two-stage positioning step, monitor the position relationship between welding wire anchor point and the actual welds anchor point of welded spiral steel pipe at any time, with the axis of welded spiral steel pipe for X-axis, detect welding wire laser positioning point O with certain frequency
4(x
4, y
4) and seam laser anchor point O
5(x
5, y
5), calculate welding wire anchor point O
4(x
4, y
4) and actual welds anchor point O
5(x
5, y
5) between X-direction distance ∧ d
x=x
5-x
4;
Make the following judgment:
1) if Δ d
x=0 is continued monitoring;
2) if Δ d
x> 0, then start linear drives servomotor and move described rolling disc 2.3.3 distance along X-direction negative sense | ∧ d
x|;
3) if Δ d
x< 0, then start linear drives servomotor and move described rolling disc 2.3.3 distance along X-direction forward | ∧ d
x|.
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| CN201610021329.5A CN105458475B (en) | 2016-01-14 | 2016-01-14 | A kind of twin wire automatic welding hidden arc welding device and its localization method and automatic seam tracking method |
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| CN105880895A (en) * | 2016-06-26 | 2016-08-24 | 何强 | Welding method and equipment for multifunctional threaded fastener |
| CN108500422A (en) * | 2017-02-24 | 2018-09-07 | 国核电站运行服务技术有限公司 | A kind of seal-weld built-up welding maintenance unit |
| CN109623109A (en) * | 2018-12-29 | 2019-04-16 | 浙江科鑫重工有限公司 | A kind of spiral welded pipe welder and its application method |
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| CN112570856A (en) * | 2020-12-09 | 2021-03-30 | 中国石油天然气集团有限公司 | Cold and hot welding wire matching welding device and system for oil gas conveying steel pipe |
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