CN102430846B - Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch - Google Patents
Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch Download PDFInfo
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- CN102430846B CN102430846B CN 201110337924 CN201110337924A CN102430846B CN 102430846 B CN102430846 B CN 102430846B CN 201110337924 CN201110337924 CN 201110337924 CN 201110337924 A CN201110337924 A CN 201110337924A CN 102430846 B CN102430846 B CN 102430846B
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Abstract
The invention aims to provide a bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch, which comprises a welding torch joint, a welding torch box and a three-channel plug-in narrow-gap shielding gas nozzle. The welding torch joint is connected with the welding torch box, the welding torch box is connected with the three-channel plug-in narrow-gap shielding gas nozzle and comprises a guide rail, a slider, a lead screw, a T-shaped connecting part, an L-shaped connecting part, a conducting rod and a bent conducting nozzle, the lead screw is connected with the slider, the slider is connected with the T-shaped connecting part, the T-shaped connecting part is connected with the L-shaped connecting part, and the L-shaped connecting part is connected with the conducting rod and the bent conducting nozzle. The welding torch is simple in design, compact in structure and stable and reliable in performance, both the distance and the included angle between twin wires can be adjusted according to practical production, the problem of incomplete fusion of lateral walls during narrow-gap welding can be solved effectively by the aid of the bent conducting nozzle, workpieces with large plate thicknesses can be welded, and welding efficiency is high. The welding torch has the advantages of narrow-gap welding and twin-wire welding.
Description
(1) technical field
The present invention relates to solder technology, is exactly a kind of crooked ignition tip formula mariages narrow gap MIG/MAG welding torch specifically.
(2) background technology
In recent years, along with the development of industrial technology, Welding Structure trends towards maximizing, so the application of slab is more and more extensive, and Welding on Properties of Welding Joint requires also more and more higher.When utilizing traditional welding method that slab is welded, because the groove size is larger, required metal filled amount enlarges markedly, cause high material consumption, the heat input increases, and finally causes welding stress and welding deformation to increase, the mechanical properties decrease of welding point, simultaneously also increase the welding job amount, lengthened the production cycle of workpiece.Compare with traditional welding method, the narrow gap welding connection technology has clear superiority when carrying out thick plates.Narrow gap welding can make long-pending a large amount of minimizing of seam cross-section, save a large amount of welding materials, significantly improve welding production efficiency, reduce welding residual deformation and welding residual stress, higher molten bath cooling velocity makes seam organization relative tiny with lower heat input, add that the moulding of welding heat affected zone, toughness damage reduce, and significantly improve the notch toughness of joint.In view of the foregoing, the narrow gap welding connection technology has become the one preferred technique that modern industry is produced the cut deal structure welding.Say on stricti jurise, the narrow gap welding connection technology is not a kind of new welding method, and it is on the basis of existing welding method, improves through some, makes these welding methods can be in the situation that Narrow sloping-glot welding and obtain satisfactory welding point.Therefore the characteristic of traditional welding method can be embodied in the narrow gap welding connection technology to a certain extent, and is determining largely technical characteristic, economic performance, application characteristic and the reliability of narrow gap welding.In the traditional welding field, the GMAW method is one of most widely used welding method, and it has many characteristics extremely to be conducive to the narrow gap welding connection technology.Compare with other welding method, GMAW heat input adjustable range is wide, metallurgical process simple, be suitable for the advantages such as downhand welding horizontal position welding and all-position welding, considers, and narrow clearance G MAW method is best suited for actual welding production.Key difficult problem of narrow clearance G MAW is to guarantee sidewall fusion, has proposed several different methods both at home and abroad around this difficult problem, mainly contains large electric current or the methods such as pulse current, electric arc swing, electric arc rotation, mariages or multifibres utilized.
(3) summary of the invention
The object of the present invention is to provide a kind of crooked ignition tip formula mariages narrow gap MIG/MAG welding torch.
The object of the present invention is achieved like this: it is comprised of the narrow gap protection gas jets of welding torch joint, welding gun casing and triple channel plug-in type, and welding torch joint connects welding gun casing, the narrow gap protection gas jets of welding gun casing connecting tee road plug-in type.
The present invention also has following technical characterictic:
(1) described welding gun casing comprises guide rail, slide block, leading screw, T-shaped connector, the L-type connector, conducting rod and crooked ignition tip, leading screw adopts positive and negative two external threadings to be connected by screw thread with slide block, can be the parallel of slide block with the transmission that rotatablely moves, guide rail is fixed on the welding gun casing, slide block can slide on direction of guide rail but can not the up and down vibration, the L-type connector couples together conducting rod and slide block, if the distance before and after needing to regulate between welding wire, only need to be at welding gun casing inner rotary leading screw, thereby leading screw rotates and moves with movable slider the distance that changes between crooked ignition tip, utilize screw to be fixed between T-shaped connector and L-type connector, but as when need changing between two crooked ignition tips angle, screw thread is unscrewed is to be regulatedly tightened fixing getting final product after complete, crooked ignition tip is arranged on conducting rod, crooked ignition tip points to respectively sidewall both sides, narrow gap, welding wire points to respectively groove both sides by crooked ignition tip, make electric arc directly to heat by oppose side wall, thereby increase the sidewall fusion penetration, solve the sidewall incomplete fusion problem in narrow gap welding, slide block arranges two, be processed as left-handed and right-handed thread in the central area respectively, and engage with leading screw, slide block is embedded in guide rail, and can be along guide rail movement, the leading screw two ends are processed as left-handed and right-handed thread and match with two slide blocks, leading screw passes wall box through sealed bearing, leading screw passes sidewall sections and is used for manual rotation, T-shaped connector is fixed on slide block by two-screw, the other end engages with the L-type connector, insulated from each other between T-shaped connector and slide block, L-type connector one end engages with T-shaped connector, be processed as through hole on the other end, through hole matches with conducting rod, the front of through hole is processed with screwed hole and makes it to determine that for the locking conducting rod crooked ignition tip points to, conducting rod passes from the through hole of L-type connector, its upper end external diameter is greater than through-hole diameter, screw on the conducting rod via through holes is fixed, its lower end is used for installing crooked ignition tip, crooked its angle of bend of ignition tip is the 5-10 degree, bending radius is 14mm.
(2) the narrow gap protection gas jets of described triple channel plug-in type upper end combines with the welding gun casing; cooling water enters the cooling water circulation passage from the cooling water inlet cooling for nozzle; the front and back passage is formed by two copper pipe processings; and be connected with nozzle body by screw thread; top will protect gas to send into from protection gas entrance passage after protection gas by quick connector; like this can conveniently replaced front and back passage and adjust channel angle; also can independently regulate the throughput of two passages, thereby reach good protection effect.
(3) described welding torch joint matches with the double wire welding power supply; wire-feeding pipe and protection gas enter the welding gun casing through this joint; welding torch joint is comprised of two welding gun terminals and insulation layer, and two welding gun terminals are connected with two sources of welding current respectively, and are insulated from each other between two terminals.
The narrow gap of the crooked ignition tip formula mariages of the present invention MIG/MAG welding torch, simplicity of design, compact conformation, stable and reliable for performance, distance between mariages and angle all can be adjusted according to actual production, adopt crooked ignition tip can effectively solve sidewall incomplete fusion problem in narrow gap welding, can the large workpiece of welded plate thickness, welding production efficiency is high.The present invention has the double dominant of narrow gap welding and Double Wire Welding.
(4) description of drawings
Fig. 1 is structure chart of the present invention;
Fig. 2 is the narrow gap protection gas jets of triple channel plug-in type of the present invention structural representation.
(5) specific embodiment
The invention will be further described for example below in conjunction with accompanying drawing.
Embodiment 1: in conjunction with Fig. 1, Fig. 2; the narrow gap of a kind of crooked ignition tip formula mariages of the present invention MIG/MAG welding torch; it is comprised of welding torch joint (1), welding gun casing (2) and the narrow gap protection gas jets of triple channel plug-in type (3); welding torch joint (1) connects welding gun casing (2), welding gun casing (2) the connecting tee road narrow gap protection gas jets of plug-in type (3).
The present invention also has following technical characterictic:
described welding gun casing (2) comprises guide rail (8), slide block (13), leading screw (5), T-shaped connector (6), L-type connector (7), conducting rod (12) and crooked ignition tip (4), leading screw (5) adopts positive and negative two external threadings to be connected by screw thread with slide block (13), can be the parallel of slide block with the transmission that rotatablely moves, guide rail (8) is fixed on welding gun casing (2), slide block (13) can slide on direction of guide rail but can not the up and down vibration, L-type connector (7) couples together conducting rod (12) and slide block (8), if the distance before and after needing to regulate between welding wire, only need to be at welding gun casing (2) inner rotary leading screw (5), leading screw (5) thus rotate the band movable slider and move the distance that changes between crooked ignition tip (4), utilize screw to be fixed between T-shaped connector (6) and L-type connector (7), but as when need changing between two crooked ignition tips angle, screw thread is unscrewed is to be regulatedly tightened fixing getting final product after complete, crooked ignition tip (4) is arranged on conducting rod (12), crooked ignition tip points to respectively sidewall both sides, narrow gap, welding wire points to respectively groove both sides by crooked ignition tip, make electric arc directly to heat by oppose side wall, thereby increase the sidewall fusion penetration, solve the sidewall incomplete fusion problem in narrow gap welding, slide block arranges two, be processed as left-handed and right-handed thread in the central area respectively, and engage with leading screw, slide block is embedded in guide rail, and can be along guide rail movement, the leading screw two ends are processed as left-handed and right-handed thread and match with two slide blocks, leading screw passes wall box through sealed bearing, leading screw passes sidewall sections and is used for manual rotation, T-shaped connector is fixed on slide block by two-screw, the other end engages with the L-type connector, insulated from each other between T-shaped connector and slide block, L-type connector one end engages with T-shaped connector, be processed as through hole on the other end, through hole matches with conducting rod, the front of through hole is processed with screwed hole and makes it to determine that for the locking conducting rod crooked ignition tip points to, conducting rod passes from the through hole of L-type connector, its upper end external diameter is greater than through-hole diameter, screw on the conducting rod via through holes is fixed, its lower end is used for installing crooked ignition tip, crooked its angle of bend of ignition tip is the 5-10 degree, bending radius is 14mm.
The narrow gap protection gas jets of described triple channel plug-in type (3) upper end combines with welding gun casing (2); (10) enter the cooling water circulation passage to be used for nozzle cooling cooling water from the cooling water inlet; the front and back passage is formed by two copper pipe processings; and be connected with nozzle body by screw thread; top will protect gas to send into from protection gas entrance (9) passage (11) after protection gas by quick connector; like this can conveniently replaced front and back passage and adjust channel angle; also can independently regulate the throughput of two passages, thereby reach good protection effect.
Described welding torch joint (1) matches with the double wire welding power supply; wire-feeding pipe and protection gas enter the welding gun casing through this joint; welding torch joint is comprised of two welding gun terminals and insulation layer, and two welding gun terminals are connected with two sources of welding current respectively, and are insulated from each other between two terminals.
Embodiment 2: in conjunction with Fig. 1, Fig. 2; workflow of the present invention: two wire-feeding pipes are sent into respectively in two conducting rods after in terminals enter the welding gun casing, protect simultaneously gas to enter the welding torch casing via the protection gas entrance of terminals and behind the main channel of protection gas jets, welding region are protected.Two crooked ignition tips are arranged on respectively on two conducting rods, and adjust conducting rod and make two crooked ignition tips point to respectively the Narrow sloping-glot two side, then utilize screw that conducting rod is fixed, two welding wires stretch out from two crooked ignition tips through wire-feeding pipe, there is the angle of 5-10 degree two welding wires that stretch out and Narrow sloping-glot two side, can guarantee that like this electric arc burns near sidewall, increase the sidewall fusion penetration, solve the sidewall incomplete fusion defective in the narrow gap welding termination process.In order to adapt to different technological requirements, need to adjust distance and angle between welding wire, rotating threaded shaft, two slide blocks that match with leading screw are motion in the opposite direction respectively, do relative motion by two conducting rods that connector is connected thereby make with slide block, and then the spacing between the adjustment mariages, mariages spacing adjustable range is 5-45mm, can carry out the welding of congruent melting pond and off-eutectic pond.And after the screw between L-type connector and T-shaped connector is unscrewed, can adjust the angle between mariages, afterwards screw tightening is got final product.The narrow gap protection gas jets of triple channel plug-in type upper end combines with the welding torch casing; and have the cooling water circulation passage on top cooling for nozzle; the front and back passage is formed by two copper pipe processings; and be connected with nozzle body by screw thread; the protection gas of main channel is entered by casing, and the front and back passage will protect pneumatic transmission to enter by quick connector, like this can conveniently replaced front and back passage and adjust channel angle; also can independently regulate the throughput of two passages, thereby reach good protection effect.
Claims (3)
1. crooked ignition tip formula mariages narrow gap MIG/MAG welding torch, it is comprised of welding torch joint (1), welding gun casing (2) and the narrow gap protection gas jets of triple channel plug-in type (3), it is characterized in that: welding torch joint (1) connects welding gun casing (2), welding gun casing (2) the connecting tee road narrow gap protection gas jets of plug-in type (3);
described welding gun casing (2) comprises guide rail (8), slide block (13), leading screw (5), T-shaped connector (6), L-type connector (7), conducting rod (12) and crooked ignition tip (4), leading screw (5) adopts positive and negative two external threadings to be connected by screw thread with slide block (13), can be the parallel of slide block with the transmission that rotatablely moves, guide rail (8) is fixed on welding gun casing (2), slide block (13) can slide on direction of guide rail but can not the up and down vibration, L-type connector (7) couples together conducting rod (12) and slide block (8), if the distance before and after needing to regulate between welding wire, only need to be at welding gun casing (2) inner rotary leading screw (5), leading screw (5) thus rotate the band movable slider and move the distance that changes between crooked ignition tip (4), utilize screw to be fixed between T-shaped connector (6) and L-type connector (7), when needs change between two crooked ignition tips angle, with screw thread unscrew to be regulated tighten after complete fixing, crooked ignition tip (4) is arranged on conducting rod (12), crooked ignition tip points to respectively sidewall both sides, narrow gap, welding wire points to respectively groove both sides by crooked ignition tip, make electric arc directly to heat by oppose side wall, thereby increase the sidewall fusion penetration, solve the sidewall incomplete fusion problem in narrow gap welding, slide block arranges two, be processed as left-handed and right-handed thread in the central area respectively, and engage with leading screw, slide block is embedded in guide rail, and can be along guide rail movement, the leading screw two ends are processed as left-handed and right-handed thread and match with two slide blocks, leading screw passes wall box through sealed bearing, leading screw passes sidewall sections and is used for manual rotation, T-shaped connector is fixed on slide block by two-screw, the other end engages with the L-type connector, insulated from each other between T-shaped connector and slide block, L-type connector one end engages with T-shaped connector, be processed as through hole on the other end, through hole matches with conducting rod, the front of through hole is processed with screwed hole and makes it to determine that for the locking conducting rod crooked ignition tip points to, conducting rod passes from the through hole of L-type connector, its upper end external diameter is greater than through-hole diameter, screw on the conducting rod via through holes is fixed, its lower end is used for installing crooked ignition tip, crooked its angle of bend of ignition tip is the 5-10 degree, bending radius is 14mm.
2. the narrow gap of a kind of crooked ignition tip formula mariages according to claim 1 MIG/MAG welding torch, it is characterized in that: the narrow gap protection gas jets of described triple channel plug-in type (3) upper end combines with welding gun casing (2), (10) enter the cooling water circulation passage to be used for nozzle cooling cooling water from the cooling water inlet, the front and back passage is formed by two copper pipe processings, and be connected with nozzle body by screw thread, top will protect gas to send into from protection gas entrance (9) passage (11) after protection gas by quick connector, like this can conveniently replaced front and back passage and adjust channel angle, also can independently regulate the throughput of two passages, thereby reach good protection effect.
3. the narrow gap of a kind of crooked ignition tip formula mariages according to claim 1 MIG/MAG welding torch; it is characterized in that: described welding torch joint (1) matches with the double wire welding power supply; wire-feeding pipe and protection gas enter the welding gun casing through this joint; welding torch joint is comprised of two welding gun terminals and insulation layer; two welding gun terminals are connected with two sources of welding current respectively, and are insulated from each other between two terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110337924 CN102430846B (en) | 2011-10-21 | 2011-10-21 | Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110337924 CN102430846B (en) | 2011-10-21 | 2011-10-21 | Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch |
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| Publication Number | Publication Date |
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| CN102430846A CN102430846A (en) | 2012-05-02 |
| CN102430846B true CN102430846B (en) | 2013-05-15 |
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| CN 201110337924 Expired - Fee Related CN102430846B (en) | 2011-10-21 | 2011-10-21 | Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch |
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| CN102672319A (en) * | 2012-05-30 | 2012-09-19 | 上海锅炉厂有限公司 | Changeable bevel conducting rod |
| CN102773596A (en) * | 2012-07-23 | 2012-11-14 | 昆山瑞凌焊接科技有限公司 | Narrow gap double-wire welding gun |
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| WO2014088110A1 (en) * | 2012-12-04 | 2014-06-12 | Ｊｆｅスチール株式会社 | Method for narrow-gap, gas-shielded arc welding |
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| US11285557B2 (en) | 2019-02-05 | 2022-03-29 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system |
| CN109719373B (en) * | 2019-02-26 | 2020-07-14 | 上海交通大学 | Double-wire spacing adjustable narrow-gap gas metal arc welding gun |
| CN109773359B (en) * | 2019-03-07 | 2023-09-12 | 哈尔滨工业大学（威海） | plasma-MIG composite welding device for narrow-gap welding |
| CN110434498A (en) * | 2019-07-24 | 2019-11-12 | 昆山华恒焊接股份有限公司 | Paraxonic formula hybrid welding torch |
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| CN111014907A (en) * | 2019-11-18 | 2020-04-17 | 申英强 | Narrow-gap filament matrix type welding gun and welding process |
| CN113399801B (en) * | 2021-06-10 | 2023-04-21 | 中车青岛四方机车车辆股份有限公司 | Welding device and welding system for inhibiting welding hot cracks |
| CN114951921B (en) * | 2022-06-09 | 2024-03-08 | 斯图加特航空自动化（青岛）有限公司 | Double-wire narrow-gap GMAW welding device for middle groove thick plate of scraper conveyor of coal machine |
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