CN112191378A - Double-layer gas circuit nozzle for narrow-gap gas shielded welding - Google Patents
Double-layer gas circuit nozzle for narrow-gap gas shielded welding Download PDFInfo
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- CN112191378A CN112191378A CN202011041758.1A CN202011041758A CN112191378A CN 112191378 A CN112191378 A CN 112191378A CN 202011041758 A CN202011041758 A CN 202011041758A CN 112191378 A CN112191378 A CN 112191378A
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- nozzle
- auxiliary
- main nozzle
- welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
-
- 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
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a double-layer gas path nozzle for narrow-gap gas shielded welding, which comprises a main nozzle and an auxiliary nozzle, wherein the auxiliary nozzle is sleeved outside the main nozzle, the open end of the auxiliary nozzle can move relatively relative to the open end of the main nozzle along the axial direction, and a gap is reserved between the outer wall of the main nozzle and the inner wall of the auxiliary nozzle. The double-layer gas circuit nozzle for narrow-gap gas shielded welding has the advantages of simple structure, improved efficiency, reduced welding groove section, reduced welding material consumption and the like.
Description
Technical Field
The invention relates to the technical field of welding equipment, in particular to a double-layer gas circuit nozzle for narrow-gap gas shielded welding.
Background
The size and the model of the existing welding nozzle are fixed and difficult to flexibly adjust, when a welding gap is to be narrow between workpieces, the nozzle is difficult to probe into the deep part of a groove, so that the section of the welding groove is increased, the filling amount of welding materials is increased, the welding efficiency is difficult to improve, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the double-layer gas circuit nozzle for the narrow-gap gas shielded welding, which has the advantages of simple structure, improved efficiency, reduced welding groove section and reduced welding material consumption.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a double-layer gas path nozzle for narrow-gap gas shielded welding comprises a main nozzle and an auxiliary nozzle, wherein the auxiliary nozzle is sleeved outside the main nozzle, the open end of the auxiliary nozzle can move relative to the open end of the main nozzle along the axial direction, and a gap is reserved between the outer wall of the main nozzle and the inner wall of the auxiliary nozzle.
As a further improvement of the above technical solution:
and the auxiliary nozzle is provided with a connecting pipe for communicating the gap.
And the main nozzle is provided with a flow distribution hole communicated with the gap.
The main nozzle is hollow stepped shaft-shaped, the opening end of the main nozzle is arranged at the end part of the small-diameter shaft section, the auxiliary nozzle is cylindrical and sleeved outside the small-diameter shaft section of the main nozzle, and the end part of the non-opening end of the auxiliary nozzle is connected with the large-diameter shaft section of the main nozzle.
The outer wall of the main nozzle is provided with external threads, and the inner wall of the end part of the non-opening end of the auxiliary nozzle is provided with internal threads matched and connected with the external threads.
And a stop nut is arranged at the end part of the non-opening end in the auxiliary nozzle, and an internal thread is arranged on the inner wall of the stop nut.
Compared with the prior art, the invention has the advantages that:
the double-layer gas circuit nozzle for narrow-gap gas shielded welding comprises the main nozzle and the auxiliary nozzle, wherein the auxiliary nozzle is sleeved outside the main nozzle, so that the size of the main nozzle is greatly reduced, the main nozzle can easily probe into a narrow gap to be welded, the probing depth of the main nozzle is increased, the cross section area of a welding groove and the using amount of welding materials are reduced, the welding efficiency and quality are effectively improved, and the required cost is reduced. And the open end of the auxiliary nozzle can move relatively relative to the open end of the main nozzle along the axial direction, so that the flexible adjustment can be carried out according to the welding gap condition before welding, the open end of the auxiliary nozzle is not too close to the open end of the main nozzle to cause interference and influence the probing depth of the main nozzle, and is not too far away from the gap to be welded to cause the auxiliary protection effect on a welding pool, and the applicability is better.
Drawings
FIG. 1 is a schematic structural view of a double-layer gas path nozzle for narrow gap gas shielded welding according to embodiment 1;
fig. 2 is a schematic structural view of a double-layer gas path nozzle for narrow gap gas shielded welding according to embodiment 2.
Illustration of the drawings: 1. a main nozzle; 11. a shunt hole; 2. an auxiliary nozzle; 21. a connecting pipe; 22. and a stop nut.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
Example 1:
as shown in fig. 1, the double-layer gas path nozzle for narrow gap gas arc welding of the present embodiment includes a main nozzle 1 communicated with a main shielding gas source and an auxiliary nozzle 2 communicated with an auxiliary shielding gas source, and the auxiliary nozzle 2 is sleeved outside the main nozzle 1. This embodiment separates main nozzle 1 and auxiliary nozzle 2, both can be used for communicating different protective gas sources respectively and spray different protective gas, also can make the two lead to the same kind of air supply, or auxiliary nozzle 2 does not lead to the air supply, only uses main nozzle 1 to spout protective gas for the suitable welding situation of nozzle is more. And the required volume of the main nozzle 1 is greatly reduced, so that the main nozzle 1 can easily penetrate into a narrower gap to be welded, the penetrating depth is increased, the cross-sectional area of a welding groove and the using amount of welding materials are reduced, the welding efficiency and quality are effectively improved, and the required cost is reduced.
And the open end of the auxiliary nozzle 2 can move relatively relative to the open end of the main nozzle 1 along the axial direction, so that the flexible adjustment can be carried out according to the welding gap condition before welding, the open end of the auxiliary nozzle 2 is not too close to the open end of the main nozzle 1 to cause interference and influence the probing depth of the main nozzle 1, and is not too far away from the gap to be welded to cause the failure of auxiliary protection on a welding molten pool, and the applicability is better. Meanwhile, the auxiliary nozzle 2 is adjustable, so that the main nozzle 1 can be deeply inserted into a narrow and deep type welding gap, and compared with a common nozzle, the welding wire does not need to extend out of the main nozzle 1 for too long in the welding process, the structural strength of the welding wire is protected, the welding stability is further ensured, the auxiliary nozzle is suitable for all medium plate welding processes of more than 4.5mm, and the problem of welding of the existing medium plate is solved. The nozzle structure of the embodiment can be well applied to MIG welding (metal inert gas welding) and MAG welding (metal active gas welding), and effectively improves the welding quality.
In this embodiment, leave the clearance between the outer wall of main nozzle 1 and auxiliary nozzle 2's the inner wall, make things convenient for supplementary protective gas's circulation, be equipped with the connecting pipe 21 in intercommunication clearance on the auxiliary nozzle 2, through this connecting pipe 21, auxiliary nozzle 2 can realize dismantling with the air supply and be connected, make in gaseous follow air supply reaches the clearance along connecting pipe 21, later from auxiliary nozzle 2's opening blowout.
In this embodiment, the main nozzle 1 is a hollow stepped shaft, the open end of the main nozzle is opened at the end of the small-diameter shaft section, the auxiliary nozzle 2 is a cylindrical shape, the main nozzle 1 is sleeved outside the small-diameter shaft section, and the non-open end of the auxiliary nozzle is connected with the large-diameter shaft section of the main nozzle 1. In other embodiments, the auxiliary nozzle 2 may also be configured in a hollow stepped shaft shape, so that the inner wall of the large-diameter shaft section of the auxiliary nozzle plays a role of avoiding outwards, which is not described herein again.
In this embodiment, the outer wall of the main nozzle 1 is provided with an external thread, and the inner wall of the end part of the non-open end of the auxiliary nozzle 2 is provided with an internal thread which is connected with the external thread in a matching manner. Through the threaded connection mode, the relative position between the auxiliary nozzle 2 and the main nozzle 1 can be flexibly adjusted, and the connection strength between the auxiliary nozzle and the main nozzle is also ensured. In this embodiment, the end of the non-open end of the auxiliary nozzle 2 is provided with a stop nut 22, the inner wall of the stop nut 22 is provided with an internal thread, and after the auxiliary nozzle 2 is adjusted to a set position, the stop nut 22 can prevent the auxiliary nozzle 2 from being affected by vibration or heat during the welding process and always keep the auxiliary nozzle at the position.
Example 2:
the present embodiment is substantially the same as embodiment 1, except that, as shown in fig. 2, the main nozzle 1 of the double-layer gas path nozzle for narrow gap gas shielded welding of the present embodiment is provided with a flow distribution hole 11 communicated with the gap. When welding, the main nozzle 1 sprays protective gas to the opening end of the main nozzle to protect a welding seam, meanwhile, a part of protective gas enters a gap between the auxiliary nozzle 2 and the main nozzle 1 along the diversion hole 11 and is sprayed through the opening end of the auxiliary nozzle 2, so that the coverage range of the protective gas is expanded at a set position, and therefore, even when the welding seam which cannot be completely covered by the main nozzle 1 is welded, the auxiliary nozzle 2 can ensure that the edge of the welding seam is protected by the protective gas, and the welding quality is improved.
In this embodiment, the branch flow hole 11 is arranged on the conical surface transition section between the major diameter shaft section and the minor diameter shaft section of the main nozzle 1, so that the opening of the branch flow hole is inclined slightly toward the opening end of the auxiliary nozzle 2, the flow velocity component flowing toward the opening end of the auxiliary nozzle 2 is ensured, the gas injection velocity is accelerated, and the disorder of the flow direction of the internal gas caused by the direct impact of the gas flow on the wall surface of the auxiliary nozzle 2 is avoided.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. It should be apparent to those skilled in the art that modifications and variations can be made without departing from the technical spirit of the present invention.
Claims (6)
1. The utility model provides a double-deck gas circuit nozzle for narrow gap gas shielded arc welding which characterized in that: including main nozzle (1) and auxiliary nozzle (2), auxiliary nozzle (2) cup joint in the outside of main nozzle (1), just the open end of auxiliary nozzle (2) can be relative the open end of main nozzle (1) along axial relative movement, leave the clearance between the outer wall of main nozzle (1) and the inner wall of auxiliary nozzle (2).
2. The dual layer gas path nozzle for narrow gap gas metal arc welding of claim 1, wherein: and the auxiliary nozzle (2) is provided with a connecting pipe (21) communicated with the gap.
3. The dual layer gas path nozzle for narrow gap gas metal arc welding of claim 1, wherein: and a shunting hole (11) communicated with the gap is arranged on the main nozzle (1).
4. The dual layer gas path nozzle for narrow gap gas metal arc welding of claim 1, wherein: the main nozzle (1) is in a hollow stepped shaft shape, the opening end of the main nozzle is arranged at the end part of the small-diameter shaft section, the auxiliary nozzle (2) is in a cylindrical shape and is sleeved outside the small-diameter shaft section of the main nozzle (1), and the end part of the non-opening end of the auxiliary nozzle is connected with the large-diameter shaft section of the main nozzle (1).
5. The double-layer gas circuit nozzle for narrow gap gas shielded welding according to any one of claims 1 to 4, characterized in that: the outer wall of the main nozzle (1) is provided with an external thread, and the inner wall of the end part of the non-opening end of the auxiliary nozzle (2) is provided with an internal thread which is connected with the external thread in a matching way.
6. The dual layer gas path nozzle for narrow gap gas metal arc welding of claim 5, wherein: the end part of the non-opening end in the auxiliary nozzle (2) is provided with a stop nut (22), and the inner wall of the stop nut (22) is provided with internal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041758.1A CN112191378A (en) | 2020-09-28 | 2020-09-28 | Double-layer gas circuit nozzle for narrow-gap gas shielded welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041758.1A CN112191378A (en) | 2020-09-28 | 2020-09-28 | Double-layer gas circuit nozzle for narrow-gap gas shielded welding |
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| Publication Number | Publication Date |
|---|---|
| CN112191378A true CN112191378A (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011041758.1A Pending CN112191378A (en) | 2020-09-28 | 2020-09-28 | Double-layer gas circuit nozzle for narrow-gap gas shielded welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083118A (en) * | 2021-08-02 | 2022-02-25 | 北京工业大学 | Protection device for actively regulating and controlling laser welding small hole and molten pool |
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|---|---|---|---|---|
| CN201012424Y (en) * | 2006-12-29 | 2008-01-30 | 贵州永红航空机械有限责任公司 | Welding gun double-layer protection nozzle |
| CN201195227Y (en) * | 2008-05-19 | 2009-02-18 | 湘潭电机股份有限公司 | Nozzle narrow-gap gas shielded arc welding |
| CN203918197U (en) * | 2014-04-16 | 2014-11-05 | 南京钢铁股份有限公司 | A kind of CO 2gas protective welding gun nozzle |
| CN203973032U (en) * | 2014-06-25 | 2014-12-03 | 常州海杰冶金机械制造有限公司 | Gas shielded arc welding one side welding with back formation gas shield structure |
| JP2016016430A (en) * | 2014-07-08 | 2016-02-01 | 日鉄住金パイプライン＆エンジニアリング株式会社 | Welding equipment with double nozzle |
| CN205869680U (en) * | 2016-07-01 | 2017-01-11 | 常州机电职业技术学院 | Length-adjustable gas shielded welding nozzle |
| CN207272386U (en) * | 2017-09-29 | 2018-04-27 | 西安泰普特种焊接技术有限公司 | A kind of welding gun gas shield device suitable for the welding of pipeline deep groove |
| CN210937611U (en) * | 2019-09-06 | 2020-07-07 | 大连透平机械技术发展有限公司 | Telescopic protective gas hood |
| CN111451617A (en) * | 2020-03-12 | 2020-07-28 | 山东大学 | Double-gas-path welding contact nozzle, welding gun comprising same and welding method |
-
2020
- 2020-09-28 CN CN202011041758.1A patent/CN112191378A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201012424Y (en) * | 2006-12-29 | 2008-01-30 | 贵州永红航空机械有限责任公司 | Welding gun double-layer protection nozzle |
| CN201195227Y (en) * | 2008-05-19 | 2009-02-18 | 湘潭电机股份有限公司 | Nozzle narrow-gap gas shielded arc welding |
| CN203918197U (en) * | 2014-04-16 | 2014-11-05 | 南京钢铁股份有限公司 | A kind of CO 2gas protective welding gun nozzle |
| CN203973032U (en) * | 2014-06-25 | 2014-12-03 | 常州海杰冶金机械制造有限公司 | Gas shielded arc welding one side welding with back formation gas shield structure |
| JP2016016430A (en) * | 2014-07-08 | 2016-02-01 | 日鉄住金パイプライン＆エンジニアリング株式会社 | Welding equipment with double nozzle |
| CN205869680U (en) * | 2016-07-01 | 2017-01-11 | 常州机电职业技术学院 | Length-adjustable gas shielded welding nozzle |
| CN207272386U (en) * | 2017-09-29 | 2018-04-27 | 西安泰普特种焊接技术有限公司 | A kind of welding gun gas shield device suitable for the welding of pipeline deep groove |
| CN210937611U (en) * | 2019-09-06 | 2020-07-07 | 大连透平机械技术发展有限公司 | Telescopic protective gas hood |
| CN111451617A (en) * | 2020-03-12 | 2020-07-28 | 山东大学 | Double-gas-path welding contact nozzle, welding gun comprising same and welding method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083118A (en) * | 2021-08-02 | 2022-02-25 | 北京工业大学 | Protection device for actively regulating and controlling laser welding small hole and molten pool |
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Application publication date: 20210108 |