CN112427782A - Gas shielded welding gun for consumable electrode - Google Patents
Gas shielded welding gun for consumable electrode Download PDFInfo
- Publication number
- CN112427782A CN112427782A CN202011269462.5A CN202011269462A CN112427782A CN 112427782 A CN112427782 A CN 112427782A CN 202011269462 A CN202011269462 A CN 202011269462A CN 112427782 A CN112427782 A CN 112427782A
- Authority
- CN
- China
- Prior art keywords
- gas
- sleeve
- nozzle
- gas outlet
- wall surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The embodiment of the invention provides a gas metal arc welding gun, which comprises a gun body, a first sleeve, a second sleeve and a nozzle, wherein the gun body is provided with a gas protection channel and is provided with a plurality of first gas outlet holes; the first sleeve is sleeved outside the gun body and is provided with a plurality of second air outlet holes; a first speed reduction cavity is formed between the inner wall surface of the first sleeve and the outer wall surface of the gun body; the second sleeve is sleeved outside the first sleeve and is provided with a plurality of third air outlet holes; a second speed reduction cavity is formed between the inner wall surface of the second sleeve and the outer wall surface of the first sleeve; the nozzle is sleeved outside the gun body, and the first sleeve and the second sleeve are arranged in the nozzle; wherein, first speed reduction chamber passes through first venthole intercommunication in protection gas channel, and the second speed reduction chamber passes through the second venthole intercommunication in first speed reduction chamber.
Description
Technical Field
The invention relates to the technical field of gas metal arc welding in general, and in particular relates to a gas metal arc welding gun.
Background
When gas shielded welding is carried out, protective gas continuously sprayed from a nozzle of a welding gun forms a gas protective layer around an electric arc, so that stable combustion of the electric arc is ensured. At present, the gas shielded arc welding gun in the related art mostly adjusts the air flow stiffness and the gas shielding effect by adjusting the flow of the shielding gas. However, a single adjustment of the gas flow rate does not ensure a good gas shielding effect, thereby affecting the welding quality.
Disclosure of Invention
The embodiment of the invention provides a gas shielded welding gun with a consumable electrode, which can reduce the turbulence of shielding gas flow so as to improve the protection effect.
The gas shielded welding gun for the consumable electrode comprises a gun body, a first sleeve, a second sleeve and a nozzle, wherein the gun body is provided with a shielding gas channel and is provided with a plurality of first gas outlets; the first sleeve is sleeved outside the gun body and is provided with a plurality of second air outlet holes; a first speed reduction cavity is formed between the inner wall surface of the first sleeve and the outer wall surface of the gun body; the second sleeve is sleeved outside the first sleeve and is provided with a plurality of third air outlet holes; a second speed reduction cavity is formed between the inner wall surface of the second sleeve and the outer wall surface of the first sleeve; the nozzle is sleeved outside the gun body, and the first sleeve and the second sleeve are arranged in the nozzle; the first speed reduction cavity is communicated with the shielding gas channel through the first gas outlet hole, and the second speed reduction cavity is communicated with the first speed reduction cavity through the second gas outlet hole.
According to some embodiments of the invention, the first gas outlet, the second gas outlet and the third gas outlet are offset from each other in an axial direction of the welding gun;
the first air outlet hole faces the inner wall surface of the first sleeve, and the second air outlet hole faces the inner wall surface of the second sleeve.
According to some embodiments of the invention, the third outlet hole is closer to the front end surface of the nozzle than the first outlet hole in the axial direction, and the second outlet hole is provided between the first outlet hole and the third outlet hole.
According to some embodiments of the invention, a distance between a centerline of the second outlet hole and a centerline of the third outlet hole is between 3mm and 5 mm.
According to some embodiments of the invention, the gun body includes a barrel and a contact tip attached to an end of the barrel.
According to some embodiments of the invention, the first sleeve is disposed outside of the barrel and the contact tip.
According to some embodiments of the present invention, an annular gas flow passage is formed between an inner wall surface of the nozzle and an outer wall surface of the contact tip, and a cross-sectional area of the annular gas flow passage is 151mm2～188mm2。
According to some embodiments of the invention, the distance between the center line of the third outlet hole and the front end surface of the nozzle is between 35mm and 40 mm.
According to some embodiments of the invention, the plurality of first air outlet holes are uniformly arranged in a circumferential direction of the gun body; the plurality of second air outlet holes are uniformly arranged along the circumferential direction of the first sleeve; the plurality of third air outlet holes are uniformly arranged along the circumferential direction of the second sleeve.
According to some embodiments of the invention, the number of the first outlet holes, the second outlet holes and the third outlet holes is six.
One embodiment of the above invention has the following advantages or benefits:
according to the consumable electrode gas shielded welding gun provided by the embodiment of the invention, the two-stage speed reducing cavities are arranged in the consumable electrode gas shielded welding gun, and after the shielding gas passes through the two-stage speed reducing cavities in sequence, the radial velocity component of the shielding gas is greatly reduced, so that the nozzle can spray continuous laminar flow shielding gas, the gas shielding effect of a welding area is ensured, and the welding quality is improved.
In addition, the flow state of the gas protection layer can be controlled by designing the assembly size of key parts inside the welding gun, so that a better gas protection effect and a stable welding effect are realized.
Drawings
The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic view showing a state of a shielding gas ejected from a welding torch in the related art.
FIG. 2 shows a partial cross-sectional view of a consumable electrode gas shield welding torch in accordance with an embodiment of the present invention.
Fig. 3 shows a cross-sectional view of a barrel of an embodiment of the present invention.
FIG. 4 is a schematic illustration of the gas flow pattern within a consumable electrode gas shield welding torch in accordance with an embodiment of the present invention.
FIG. 5 is a schematic diagram showing key parameters of a consumable electrode gas shield welding torch in accordance with an embodiment of the present invention.
Wherein the reference numerals are as follows:
110. conductive nozzle
120. Nozzle with a nozzle body
130. Welding wire
140. Protective gas
150. Welding zone
210. Gun body
201. Protective gas channel
202. Wire feeding channel
203. Waterway channel
211. Gun barrel
2111. A first air outlet
212. Conductive nozzle
220. First sleeve
221. Second air outlet
230. Second sleeve
231. Third air outlet
240. Nozzle with a nozzle body
241. Front end face of nozzle
310. First speed reduction cavity
320. Second speed reduction chamber
330. Annular gas flow passage
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
The inventor of the invention finds out in research that more factors influence the gas protection effect, removes external factors such as equipment faults or operation specifications and the like, and plays an important role in the gas protection effect, namely the flow state of the protective gas sprayed out from the nozzle.
The inventor of the present invention further found in research that, based on the basic theory of hydrodynamics, the gas ejected from the nozzle has two flow states: laminar and turbulent flow regimes. The laminar flow state means that gas makes regular laminar or flow beam movement, when stable laminar gas flows out from the nozzle outlet, the laminar flow state can be continuously kept for a certain distance, and surrounding air is not easily involved in the distance, so that a stable gas protective layer is formed, and stable and concentrated combustion of electric arcs is realized. However, when the gas is in a turbulent state, a turbulent motion of a vortex and gas particles occurs, and ambient air is easily entrained, so that arc combustion is unstable during welding.
Specifically, as shown in fig. 1, fig. 1 is a schematic view showing a state of a shielding gas ejected from a welding torch in the related art. The related art welding gun includes a contact tip 110 and a nozzle 120, and a welding wire 130 passes through the contact tip 110 to a welding region 150. The shielding gas 140 is sprayed from the nozzle 120 to reach the welding area 150, thereby protecting the welding area. The shielding gas 140, immediately after being ejected from the nozzle 120, exists in a laminar state and then becomes a turbulent state. As shown in FIG. 1, the length of the layer flow regime is H1 and the length of the turbulence regime is H2. As is clear from the above analysis, when the shielding gas 140 is in a turbulent state, ambient air is easily entrained in the welding region 150, and arc burning is unstable during welding. Therefore, good gas shielding is achieved only when the shielding gas 140 is ejected from the nozzle 120 into the weld zone 150 in a laminar flow regime, and the length of the laminar flow regime H1 is sufficiently long.
Based on the welding gun, the invention provides the consumable electrode gas protection welding gun, and the turbulence of the protective gas flow can be reduced and the gas protection effect can be improved by improving the internal structure of the welding gun.
Referring to fig. 2, fig. 2 is a partial cross-sectional view of a consumable electrode gas shield welding torch according to an embodiment of the present invention. The welding gun of the embodiment of the present invention includes a gun body 210, a first sleeve 220, a second sleeve 230, and a nozzle 240. The gun body 210 has a shielding gas passage 201, and the gun body 210 is provided with a plurality of first gas outlet holes 2111. The first sleeve 220 is sleeved outside the gun body 210 and provided with a plurality of second air outlet holes 221; a first deceleration cavity 310 is formed between the inner wall surface of the first sleeve 220 and the outer wall surface of the gun body 210; the second sleeve 230 is sleeved outside the first sleeve 220 and provided with a plurality of third air outlet holes 231; a second deceleration cavity 320 is formed between the inner wall surface of the second sleeve 230 and the outer wall surface of the first sleeve 220; the nozzle 240 is sleeved outside the gun body 210, and the first sleeve 220 and the second sleeve 230 are arranged in the nozzle 240; the first decelerating chamber 310 is connected to the shielding gas passage 201 through a first gas outlet 2111, and the second decelerating chamber 320 is connected to the first decelerating chamber 310 through a second gas outlet 221.
As shown in fig. 4, after flowing out from the first gas outlet 2111 of the gun body 210, the shielding gas firstly enters the first decelerating chamber 310, the shielding gas realizes buffer deceleration in the first decelerating chamber 310, then enters the second decelerating chamber 320 through the second gas outlet 221, realizes buffer deceleration again in the second decelerating chamber 320 to reduce the turbulence of the gas flow, then flows to the inner wall surface of the nozzle 240 through the third gas outlet 231, and finally flows out of the nozzle 240 along the inner wall surface of the nozzle 240 to enter the welding area.
According to the consumable electrode gas shielded welding gun provided by the embodiment of the invention, the two-stage speed reducing cavities are arranged in the consumable electrode gas shielded welding gun, and after the shielding gas passes through the two-stage speed reducing cavities in sequence, the radial velocity component of the shielding gas is greatly reduced, so that the nozzle 240 can spray continuous laminar flow shielding gas, the gas shielding effect of a welding area is ensured, and the welding quality is improved.
Referring to fig. 3, fig. 3 shows a cross-sectional view of a barrel according to an embodiment of the present invention. The barrel 211 of the present embodiment has a shielding gas passage 201, a wire feed passage 202, and a water passage 203. A first gas outlet 2111 is provided at the forward end of the barrel 211 and communicates with the shielding gas passage 201 for the shielding gas to flow out of the shielding gas passage 201.
The shielding gas channel 201, the wire feeding channel 202 and the water channel 203 of the present embodiment are independent from each other. By providing the shielding gas passage 201 and the wire feeding passage 202 independently, it is possible to prevent the shielding gas from being affected when the wire feeding passage 202 in the barrel 211 feeds the welding wire, and thus the flowing state of the shielding gas is affected. Meanwhile, the protective gas can not leak to other areas when circulating.
In one embodiment, first gas outlet 2111 may be six in number and uniformly arranged along the circumferential direction of barrel 211. Ambient cylinder shielding gas can enter the separate shielding gas passage 201 of the barrel 211 and exit the six first exit ports 2111.
Of course, it is understood that the number of the first outlet holes 2111 is not limited to six, but may be four, eight or other numbers.
With reference to fig. 2, the first air outlet 2111, the second air outlet 221 and the third air outlet 231 of the embodiment of the invention are staggered from each other in the axial direction of the welding gun, the first air outlet 2111 faces the inner wall surface of the first sleeve 220, and the second air outlet 221 faces the inner wall surface of the second sleeve 230. That is, when the shielding gas flows out of the first outlet hole 2111, the shielding gas does not directly enter the second outlet hole 221, but first contacts the inner wall surface of the first sleeve 220. Similarly, when the shielding gas flows out of the second outlet hole 221, the shielding gas does not directly enter the third outlet hole 231, but first contacts the inner wall surface of the second sleeve 230.
When the shielding gas enters the first decelerating chamber 310 through the first gas outlet 2111 from the shielding gas passage, the shielding gas is restrained and buffered by the inner wall surface of the first sleeve 220, and the buffering and decelerating are realized in the first decelerating chamber 310. When the shielding gas enters the second decelerating chamber 320 from the first decelerating chamber 310 through the second gas outlet 221, the shielding gas is restrained and buffered by the inner wall surface of the second sleeve 230, and the buffering and decelerating are realized in the second decelerating chamber 320.
In one embodiment, the centerline of second exit port 221 may be perpendicular to the axial direction of barrel 211. The center line of the third vent hole 231 may be perpendicular to the axial direction of the barrel 211.
Of course, in other embodiments, the center line of the second air outlet 221 may be at an angle with the axial direction of the barrel 211, and the center line of the third air outlet 231 may be at an angle with the axial direction of the barrel 211.
Referring to fig. 2, in the present embodiment, in the axial direction, the third air outlet hole 231 is closer to the front end surface 241 of the nozzle than the first air outlet hole 2111, and the second air outlet hole 221 is disposed between the first air outlet hole 2111 and the third air outlet hole 231.
By sequentially arranging the first air outlet 2111, the second air outlet 221 and the third air outlet 231 along the axial direction, the shielding gas can flow towards the outlet direction of the nozzle 240 in the axial direction, and the reverse backflow can not occur, so that the loss of the axial velocity component of the shielding gas can be avoided, and the continuous laminar flow shielding gas sprayed by the nozzle 240 is ensured.
In one embodiment, the plurality of second outlet holes 221 are uniformly arranged in the circumferential direction of the first sleeve 220. The number of the second outlet holes 221 may be six, and the six second outlet holes 221 are uniformly arranged in the circumferential direction of the first sleeve 220.
In an embodiment, the plurality of third air outlet holes 231 are uniformly arranged in the circumferential direction of the second sleeve 230. The number of the third outlet holes 231 may be six, and six third outlet holes 231 are uniformly arranged in the circumferential direction of the second sleeve 230.
As shown in fig. 4, fig. 4 is a schematic view showing the gas flow direction inside the consumable electrode gas shielded welding torch according to the embodiment of the present invention. The shielding gas flows out of the first gas outlet 2111 of the barrel 211 and enters the first sleeve 220, a first deceleration cavity 310 is formed between the inner wall surface of the first sleeve 220 and the outer wall surface of the left end of the barrel 211, and the shielding gas flows in the first deceleration cavity 310 to achieve the buffering and deceleration effects. Six second air outlet holes 221 are uniformly distributed in the circumferential direction of the first sleeve 220, the protective gas is discharged into the second sleeve 230 from the six second air outlet holes 221, a second speed reduction cavity 320 is formed between the outer wall surface of the first sleeve 220 and the inner wall surface of the second sleeve 230, and the protective gas is discharged from the third air outlet hole 231 through the buffering and speed reduction effect again. Six third air outlet holes 231 are uniformly distributed in the circumferential direction of the second sleeve 230. Eventually, the shielding gas flows out to the welding area along the inner wall of the nozzle 240.
Of course, it is understood that the number of the second outlet holes 221 or the third outlet holes 231 may be four, eight or other numbers.
Referring to fig. 2, the gun body 210 according to the embodiment of the present invention includes a barrel 211 and a contact tip 212, the contact tip 212 is connected to one end of the barrel 211, and a first sleeve 220 is sleeved outside the barrel 211 and the contact tip 212.
Referring to FIG. 5, FIG. 5 is a schematic diagram illustrating key parameters of a consumable electrode gas shield welding torch in accordance with an embodiment of the present invention. An annular gas flow channel 330 is formed between the inner wall surface of the nozzle 240 and the outer wall surface of the contact tip 212, and the sectional area S of the annular gas flow channel 330 is pi (D1)2-D22) And/4, where D1 is the inside diameter dimension of the forward end of nozzle 240 and D2 is the outside diameter dimension of the forward end of tip 212.
Since the shielding gas is sprayed from the end face of the nozzle 240 into the welding area, air is expelled out of the welding area by virtue of the pressure and flow rate of the shielding gas, forming a stable laminar gas protective layer. When the sectional area S of the annular gas flow channel 330 is too small, the gas flow velocity is too fast, and turbulence is likely to occur; when the sectional area S of the annular gas flow path 330 is too large (usually, the inner diameter D1 of the tip portion of the nozzle 240 is too large), the use requirement of a narrow space cannot be satisfied in actual welding. Accordingly, the inventors of the present invention set the range of the sectional area S of the annular gas flow path 330 to 151mm in consideration of the above-mentioned factors2～188mm2The gas flow speed is prevented from being too high, and the use requirement in a narrow space is met.
In one embodiment, the inner diameter dimension D1 of the forward end of the nozzle 240 may be between
The outer diameter dimension D2 of the forward end of tip 212 may be between
With reference to fig. 5, the distance between the center line of the second outlet hole 221 and the center line of the third outlet hole 231 is 3mm to 5 mm.
The shielding gas flows out of the first sleeve 220 into the second sleeve 230, and the gas flow is restrained and buffered by the inner wall surface of the second sleeve 230, so that the distance L1 plays a crucial role. Too little of the distance L1 results in too little cushioning of the gas stream and too much flow velocity of the gas stream resulting in turbulence. Too large distance L1 may cause the air to be retained in the first sleeve 220 or to leak in other directions, resulting in a decrease in stiffness of the ejected air, and thus being easily disturbed by the outside air. Therefore, the inventors of the present invention set the distance between the center line of the second outlet hole 221 and the center line of the third outlet hole 231 to 3mm to 5mm, as comprehensively considered.
The distance between the center line of the third air outlet 231 and the front end surface 241 of the nozzle is 35 mm-40 mm.
The shielding gas is radially injected from the third gas outlet 231 of the second sleeve 230 onto the inner wall of the nozzle 240, and flows in the axial direction along the inner wall of the nozzle 240 until flowing out of the end face of the nozzle 240 into the welding area. The viscosity of the shielding gas itself and the friction of the inner walls of the nozzle 240 against the gas flow cause the gas flow to develop into a laminar flow within the inner walls of the nozzle 240. When the distance L2 is too small, the airflow cannot form a sufficient laminar thickness in the radial direction, and is easily affected by the turbulent flow. If the distance L2 is too large, the axial length of the nozzle 240 becomes too long, and the welding torch is not easy to use and operate in actual welding. Therefore, the inventors of the present invention set the distance between the center line of the third outlet hole 231 and the front end surface 241 of the nozzle to 35mm to 40mm, as a comprehensive consideration.
Considering that the shielding gas sprayed from the nozzle 240 is easily disturbed by external factors, the laminar flow gas is converted into the turbulent flow gas. The welding gun of the embodiment of the invention is specially designed for the sectional area S, the distance L1 and the distance L2 of the annular gas flow passage 330, thereby being capable of obtaining a longer-distance laminar flow state and improving the gas protection effect.
In summary, the consumable electrode gas shielded welding gun according to the embodiment of the invention has the advantages and beneficial effects that:
according to the consumable electrode gas shielded welding gun provided by the embodiment of the invention, the two-stage speed reducing cavities are arranged in the consumable electrode gas shielded welding gun, and after the shielding gas passes through the two-stage speed reducing cavities in sequence, the radial velocity component of the shielding gas is greatly reduced, so that the nozzle 240 can spray continuous laminar flow shielding gas, the gas shielding effect of a welding area is ensured, and the welding quality is improved.
In addition, the flow state of the gas protection layer can be controlled by designing the assembly size of key parts inside the welding gun, so that a better gas protection effect and a stable welding effect are realized.
In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments of the invention may be understood by those of ordinary skill in the art according to specific situations.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.
In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the invention should be included in the protection scope of the embodiments of the invention.
Claims (10)
1. A consumable electrode gas shield welding torch, comprising:
the gun body is provided with a protective gas channel and is provided with a plurality of first gas outlet holes;
the first sleeve is sleeved outside the gun body and is provided with a plurality of second air outlet holes; a first speed reduction cavity is formed between the inner wall surface of the first sleeve and the outer wall surface of the gun body;
the second sleeve is sleeved outside the first sleeve and is provided with a plurality of third air outlet holes; a second speed reduction cavity is formed between the inner wall surface of the second sleeve and the outer wall surface of the first sleeve; and
the nozzle is sleeved outside the gun body, and the first sleeve and the second sleeve are arranged in the nozzle;
the first speed reduction cavity is communicated with the shielding gas channel through the first gas outlet hole, and the second speed reduction cavity is communicated with the first speed reduction cavity through the second gas outlet hole.
2. The consumable electrode gas shield welding torch of claim 1, wherein the first gas outlet, the second gas outlet, and the third gas outlet are offset from each other in an axial direction of the torch;
the first air outlet hole faces the inner wall surface of the first sleeve, and the second air outlet hole faces the inner wall surface of the second sleeve.
3. The gas metal arc welding gun according to claim 2, wherein the third gas outlet is located closer to a front end surface of the nozzle than the first gas outlet in the axial direction, and the second gas outlet is located between the first gas outlet and the third gas outlet.
4. The consumable electrode gas shield welding torch according to claim 2, wherein a distance between a center line of the second gas outlet and a center line of the third gas outlet is 3mm to 5 mm.
5. The consumable electrode gas shield welding gun according to claim 1, wherein the gun body includes a barrel and a contact tip connected to an end of the barrel.
6. The consumable electrode gas shield welding gun according to claim 5, wherein the first sleeve is sleeved outside the barrel and the contact tip.
7. The consumable electrode gas shield welding torch according to claim 5, wherein an annular gas flow passage having a cross-sectional area of 151mm is formed between an inner wall surface of the nozzle and an outer wall surface of the contact tip2～188mm2。
8. The shielded welding torch according to claim 1, wherein the distance between the center line of the third gas outlet and the front end surface of the nozzle is 35mm to 40 mm.
9. The gas metal arc welding gun according to claim 1, wherein the plurality of first gas outlet holes are uniformly arranged in a circumferential direction of the gun body; the plurality of second air outlet holes are uniformly arranged along the circumferential direction of the first sleeve; the plurality of third air outlet holes are uniformly arranged along the circumferential direction of the second sleeve.
10. The consumable electrode gas shield welding torch of claim 9, wherein the number of the first gas outlet, the second gas outlet, and the third gas outlet is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269462.5A CN112427782B (en) | 2020-11-13 | 2020-11-13 | Gas shielded welding gun for consumable electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269462.5A CN112427782B (en) | 2020-11-13 | 2020-11-13 | Gas shielded welding gun for consumable electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112427782A true CN112427782A (en) | 2021-03-02 |
| CN112427782B CN112427782B (en) | 2022-03-11 |
Family
ID=74699520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011269462.5A Active CN112427782B (en) | 2020-11-13 | 2020-11-13 | Gas shielded welding gun for consumable electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112427782B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681132A (en) * | 2021-05-13 | 2021-11-23 | 李庞军 | Gun head of welding gun |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070062922A1 (en) * | 2005-09-19 | 2007-03-22 | Lincoln Global, Inc. | Torch for arc welding gun |
| CN204735832U (en) * | 2015-07-01 | 2015-11-04 | 苏州东金机械金属有限公司 | Air cooling welder |
| CN204747732U (en) * | 2015-07-01 | 2015-11-11 | 苏州东金机械金属有限公司 | Water -cooling welder |
| CN205496760U (en) * | 2016-03-18 | 2016-08-24 | 唐山松下产业机器有限公司 | Gas is protected and is welded welder |
| CN207642468U (en) * | 2017-12-10 | 2018-07-24 | 浙江陆虎汽车有限公司 | A kind of torch head with guiding device |
| CN208913338U (en) * | 2018-10-15 | 2019-05-31 | 唐山松下产业机器有限公司 | A kind of torch nozzle, torch nozzle component and welding gun |
| CN109865922A (en) * | 2019-03-12 | 2019-06-11 | 济南尼克焊接技术有限公司 | Gas metal-arc welding welding gun |
-
2020
- 2020-11-13 CN CN202011269462.5A patent/CN112427782B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070062922A1 (en) * | 2005-09-19 | 2007-03-22 | Lincoln Global, Inc. | Torch for arc welding gun |
| CN102101212A (en) * | 2005-09-19 | 2011-06-22 | 林肯环球公司 | Welding torch for arc welding gun |
| CN204735832U (en) * | 2015-07-01 | 2015-11-04 | 苏州东金机械金属有限公司 | Air cooling welder |
| CN204747732U (en) * | 2015-07-01 | 2015-11-11 | 苏州东金机械金属有限公司 | Water -cooling welder |
| CN205496760U (en) * | 2016-03-18 | 2016-08-24 | 唐山松下产业机器有限公司 | Gas is protected and is welded welder |
| CN207642468U (en) * | 2017-12-10 | 2018-07-24 | 浙江陆虎汽车有限公司 | A kind of torch head with guiding device |
| CN208913338U (en) * | 2018-10-15 | 2019-05-31 | 唐山松下产业机器有限公司 | A kind of torch nozzle, torch nozzle component and welding gun |
| CN109865922A (en) * | 2019-03-12 | 2019-06-11 | 济南尼克焊接技术有限公司 | Gas metal-arc welding welding gun |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681132A (en) * | 2021-05-13 | 2021-11-23 | 李庞军 | Gun head of welding gun |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112427782B (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2849573B2 (en) | Plasma arc torch with fountain nozzle assembly | |
| US8395077B2 (en) | Plasma arc torch providing angular shield flow injection | |
| WO2006122256B1 (en) | Generating discrete gas jets in plasma arc torch applications | |
| JP5376091B2 (en) | Plasma torch | |
| US5208448A (en) | Plasma torch nozzle with improved cooling gas flow | |
| US6202939B1 (en) | Sequential feedback injector for thermal spray torches | |
| CN112427782B (en) | Gas shielded welding gun for consumable electrode | |
| JPWO2013008563A1 (en) | Axial feed type plasma spraying equipment | |
| US20180103535A1 (en) | Cooling plasma torch nozzles and related systems and methods | |
| CN111254431B (en) | Light-powder co-path powder feeding nozzle for atmosphere protection | |
| US5569397A (en) | Plasma torch | |
| EP3456158B1 (en) | Systems and methods for stabilizing plasma gas flow in a plasma arc torch | |
| US10625364B2 (en) | Insulation guide for plasma torch, and replacement part unit | |
| WO2019066271A1 (en) | Welding torch diffuser | |
| CN113981439A (en) | Laser powder feeding cladding head and laser cladding gun | |
| TWI780377B (en) | Nozzle device | |
| JPS5941781B2 (en) | Non-diffusion spray gun with multiple divergent nozzles | |
| TWM592346U (en) | Nozzle apparatus | |
| JP6879878B2 (en) | Thermal spray nozzle and plasma spraying device | |
| JP2020078771A (en) | Fluid nozzle | |
| CN209811427U (en) | Double-layer gas shielded welding gun | |
| CN218341237U (en) | Novel coaxial protection device for welding and laser welding equipment | |
| KR101946798B1 (en) | Torch Head for Arc Welding | |
| JP2007054872A (en) | Welding torch for gas shielded arc welding | |
| CN114535765A (en) | Plasma arc cutting torch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |