CN213945234U - Welding gun for non-consumable electrode inert gas shielded arc welding - Google Patents
Welding gun for non-consumable electrode inert gas shielded arc welding Download PDFInfo
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- CN213945234U CN213945234U CN202022808802.9U CN202022808802U CN213945234U CN 213945234 U CN213945234 U CN 213945234U CN 202022808802 U CN202022808802 U CN 202022808802U CN 213945234 U CN213945234 U CN 213945234U
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Abstract
The application discloses a welder for non-consumable inert gas shielded arc welding, a welder for non-consumable inert gas shielded arc welding includes barrel, impeller subassembly, electrode and laminar flow subassembly, and electrode, impeller subassembly and laminar flow subassembly all are located the barrel, wherein, the impeller subassembly is kept away from the mouthpiece of barrel, the laminar flow subassembly is located the mouthpiece of barrel with between the impeller subassembly, the impeller subassembly is connected to the electrode, and the laminar flow subassembly is connected to the barrel, flows through the air current of barrel can drive the impeller subassembly rotates, makes the electrode rotation, just the laminar flow subassembly can change the flow state of air current. Partial kinetic energy of the airflow is converted into mechanical energy of the impeller assembly, so that the impeller assembly rotates, the electrode is driven to rotate, and the rotating electrode is beneficial to forming larger weld penetration; the laminar flow component can change the flowing state of the airflow and is helpful for forming a stable protective layer on the airflow flowing out through the nozzle.
Description
Technical Field
The application relates to the technical field of welding equipment, in particular to a welding gun for non-consumable electrode inert gas shielded arc welding.
Background
Non-consumable inert gas arc welding (TIG welding for short) is a welding method in which a base metal and a filler wire (if a filler wire is used) are melted by an arc generated between an electrode or the like and a workpiece under the protection of an inert gas.
However, the problems of shallow weld depth, low welding efficiency and the like caused by the relative divergence of free arcs and low energy density due to the fact that the electric arcs of the argon tungsten-arc welding are in free forms are not effectively solved at present, and the argon tungsten-arc welding is only suitable for welding of thin plates generally.
SUMMERY OF THE UTILITY MODEL
Accordingly, the present invention provides a welding gun for non-tig arc welding that at least partially solves the above mentioned problems.
The utility model provides a welding gun for non-consumable electrode inert gas shielded arc welding, which comprises a gun barrel, an impeller component, an electrode and a laminar flow component,
the electrode, the impeller assembly and the laminar flow assembly are all arranged in the gun barrel, the electrode is arranged along the length direction of the gun barrel, the impeller assembly is far away from the nozzle of the gun barrel, the laminar flow assembly is positioned between the nozzle of the gun barrel and the impeller assembly,
the impeller assembly is coupled to the electrode, the laminar flow assembly is coupled to the barrel,
the airflow flowing through the gun barrel can drive the impeller assembly to rotate, so that the electrode can rotate, and the laminar flow assembly can change the flowing state of the airflow into a laminar flow state.
As the best mode for realizing, the laminar flow component comprises an outer cylinder, an inner cylinder and a plurality of laminar flow plates, wherein the inner cylinder is positioned inside the outer cylinder, the axis of the inner cylinder is coincident with the axis of the outer cylinder, the laminar flow plates are positioned between the outer cylinder and the inner cylinder and are used for connecting the outer cylinder and the inner cylinder,
wherein the electrode passes through the inner cylinder and the outer cylinder is connected to the barrel.
Preferably, the laminar flow assembly is fixedly connected with the barrel in a threaded manner, the side wall of the outer cylinder is provided with a blind hole with internal threads, the side wall of the barrel is provided with a through hole,
the blind hole is matched with the through hole and is connected with the laminar flow assembly and the gun barrel through a fastener.
And optimally, the laminar flow assembly further comprises a bearing mounting seat formed by extending outwards along the side wall of the inner cylinder body, the bearing mounting seat is used for mounting a bearing,
wherein, the electrode passes through the bearing, the bearing mount pad with bearing interference fit.
As an optimal mode for realization, the laminar flow plates are in a scattering layout relative to the inner cylinder, and included angles between two adjacent laminar flow plates are equal.
And in an optimal manner, the impeller assembly comprises a hollow shaft and an inducer,
the hollow shaft is sleeved on the electrode, and the inducer is sleeved on the hollow shaft.
As an optimal way to achieve, the inducer comprises 3 helical blades which are distributed with equal pitch.
As an optimal way to realize, the two sides of the horizontal bone line of the spiral blade are gradually thickened from outside to inside.
Most preferably, the barrel is provided with a constriction between the impeller assembly and the laminar flow assembly.
The above scheme provided by the application has at least one of the following beneficial technical effects: partial kinetic energy of the airflow is converted into mechanical energy of the impeller assembly, so that the impeller assembly rotates, the impeller assembly drives the electrode to rotate, and the rotating electrode is beneficial to forming larger weld penetration and can be used for welding thicker materials; the laminar flow component can change the flowing state of the airflow, so that the airflow in a turbulent flow state is the airflow in a laminar flow state, the airflow flowing out of the nozzle can form a stable and laminar flow-state protective layer, and the high-quality welding seam can be further ensured to be obtained; the laminar flow component guides the airflow in the turbulent flow state through the laminar flow plate, so that the airflow in the turbulent flow state is the airflow in the laminar flow state, the design is ingenious, the structure is simple, and the production cost is favorably reduced; the laminar flow subassembly is convenient with the equipment and the dismantlement of barrel, helps later stage TIG welder's maintenance.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a torch for non-MIG arc welding according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a laminar flow assembly according to an embodiment of the present application;
1. a barrel, 11, a through hole, 12, a contraction part, 13, a nozzle, 2, an electrode, 3, an impeller assembly, 31, an inducer, 32 and a hollow shaft;
4. laminar flow subassembly, 41, outer barrel, 411, blind hole, 42, interior barrel, 43, laminar flow board, 44, bearing mount pad.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. It should be noted that, for the convenience of description, only the portions relevant to the application are shown in the drawings.
In the description of the present application, it is to be understood that the terms "radial," axial, "" upper "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present application and simplifying the description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "disposed" and "connected" are to be understood in a broad sense, e.g. either fixedly or detachably or integrally connected: may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1, a torch for non-consumable inert gas welding (TIG welding for short) is shown, comprising a barrel 1, an impeller assembly 3, an electrode 2 (or other material electrode) and a laminar flow assembly 4. The electrode 2, the impeller assembly 3 and the laminar flow assembly 4 are all located within the barrel 1, wherein the electrode 2 is disposed along the length of the barrel 1, the impeller assembly 3 is away from the nozzle 13 of the barrel 1, and the laminar flow assembly 4 is close to the nozzle 13 of the barrel 1, or may be located between the impeller assembly 3 and the nozzle 13. The barrel 1 is a hollow cylinder and the laminar flow member 4 is used to change the flow of the gas stream, as shown in fig. 2. The electrode 2, the impeller assembly 3 and the laminar flow assembly 4 are all positioned in the gun barrel 1, the electrode 2 penetrates through the gun barrel 1, and one end of the electrode 2 forming an arc with a workpiece is exposed out of a nozzle 13 of the gun barrel 1. The impeller assembly 3 may be fixedly attached or removably attached to the electrode 2, for example, the impeller assembly 3 is welded to the electrode 2, or the impeller assembly 3 is threadably attached to the electrode 2, wherein the impeller assembly 3 is remote from the nosepiece 13 of the barrel 1. The laminar flow assembly 4 may be fixedly attached or removably attached to the inner wall of the barrel 1, such as by welding the laminar flow assembly 4 to the inner wall of the barrel 1, or by threadably attaching the laminar flow assembly 4 to the inner wall of the barrel 1, wherein the laminar flow assembly 4 is proximate to the nosepiece 13 of the barrel 1. It should be noted that the barrel 1 has a nozzle 13, and the nozzle 13 is the end of the barrel 1 near the workpiece.
During operation, airflow passes through the impeller assembly 3, the laminar flow assembly 4 and the nozzle 13 in sequence, so that the electrode 2 rotates automatically, and the airflow passing through the laminar flow assembly 4 is in a laminar flow state. The gas flow is a gas flow formed by inert gas or a gas flow formed by mixed gas including inert gas, for example, the inert gas is argon, or the mixed gas is argon and a small amount of hydrogen. The air flow is introduced into the interior of the barrel 1 by means of a pressurizing device, passes through the impeller assembly 3, the laminar flow assembly 4 and the nozzle 13 in sequence, and finally exits the barrel 1 through the nozzle 13. The gas flow exiting through the gun barrel 1 forms a protective ring around the arc, which is formed by the closed circuit formed by the electrode 2 and the workpiece. The protective layer can isolate air to prevent oxygen, carbon dioxide and other gases from influencing the electrode 2, the molten pool and the adjacent heat affected zone, so that a high-quality welding seam can be obtained.
This application is through the mechanical energy with partial kinetic energy conversion impeller subassembly 3 of air current for impeller subassembly 3 rotates, thereby impeller subassembly 3 drives the rotation of electrode 2. The autorotation electrode 2 enables the electric arc to rotate, so that the center of the electric arc forms a certain negative pressure state, the free electric arc is forcibly compressed by utilizing the pressure gradient generated by the atmospheric pressure and the negative pressure area of the center of the electric arc, and the free electric arc is contracted into a restrained electric arc with high energy density, so that larger weld penetration is formed, and the electrode can be used for welding thicker materials. In addition, the laminar flow component 4 can change the flowing state of the airflow, so that the airflow in a turbulent flow state is the airflow in a laminar flow state, the airflow flowing out through the nozzle 13 is facilitated to form a stable protective layer in a laminar flow state, and the excellent welding seam can be further ensured.
As best possible, as shown in fig. 2, the laminar flow assembly 4 includes an outer cylinder 41, an inner cylinder 42, and a laminar flow plate 43. The inner cylinder 42 is located inside the outer cylinder 41, and the axis of the inner cylinder 42 coincides with the axis of the outer cylinder 41. The cross-section of the electrode 2 is circular and the axis of the electrode 2 coincides with the axis of the inner cylinder 42. Wherein, the electrode 2 is in clearance fit with the inner cylinder 42, and the side wall of the outer cylinder 41 is fixedly connected with the inner wall of the gun barrel 1. The laminar flow plate 43 is rectangular, the laminar flow plate 43 is positioned between the outer cylinder 41 and the inner cylinder 42, the laminar flow plate 43 connects the inner cylinder 42 and the outer cylinder 41, and the length direction of the laminar flow plate 43 is the same as the length direction of the inner cylinder 42. In some embodiments, the axis of the inner cylinder 42 is parallel to the axis of the outer cylinder 41, and the two do not coincide.
The laminar flow component 4 guides the airflow in the turbulent flow state through the laminar flow plate 43, so that the airflow in the turbulent flow state is the airflow in the laminar flow state, the design is ingenious, the structure is simple, and the production cost is reduced.
For further optimization, the outer cylinder 41 is fixedly connected with the barrel 1 in a threaded manner. Specifically, as shown in fig. 1, at least two blind holes 411 with internal threads are provided on the side wall of the outer cylinder 41, and at least two through holes 11 are provided on the side wall of the barrel 1. The blind hole 411 is matched with the through hole 11, and a bolt passes through the through hole 11 and is fixedly connected with the blind hole 411 with internal threads. Above-mentioned threaded connection's structure for laminar flow subassembly 4 is convenient with barrel 1 ground equipment and dismantlement, helps later stage TIG welder's maintenance.
To further optimize the solution, the laminar flow assembly 4 further includes a bearing mount 44 formed extending outwardly along a sidewall of the inner cylinder 42. The bearing mount 44 is annular, the bearing mount 44 is provided at both the upper end and the lower end of the inner cylinder 42, and the two bearings are respectively provided at the bearing mount 44. The outer ring of the bearing is in interference fit with the bearing mounting seat 44, the electrode 2 passes through the two bearings, and the inner ring of the bearing is matched with the electrode 2. The provision of the bearing mount 44 enables the electrode 2 to rotate stably. Note that, here, "extend outward" means that the side wall of the inner cylinder 42 extends toward the impeller assembly 3, and the side wall of the inner cylinder 42 extends toward the nozzle 13; here, "upper end" means an end of the inner cylinder 42 near the impeller assembly 3; here, the "lower end" means an end of the inner cylinder 42 near the nozzle 13.
For further optimization, the laminar flow plates 43 are arranged in a scattering manner relative to the inner cylinder 42, and the included angles of two adjacent laminar flow plates 43 are equal, which facilitates the laminar flow module 4 to better change the flow state of the air flow.
The impeller assembly 3 comprises an inducer 31 and a hollow shaft 32, the electrode 2 passes through the hollow shaft 32, and the electrode 2 is fixedly connected with the hollow shaft 32 in a threaded manner. The inducer 31 is sleeved on the hollow shaft 32, and the inducer 31 enables the airflow to easily drive the impeller assembly 3 to rotate, so that the loss of kinetic energy of the airflow is reduced, the airflow flowing out through the nozzle 13 has higher air pressure, and the airflow is facilitated to form a stable and laminar protective layer.
Specifically, as shown in fig. 1, the inducer 31 is composed of three helical blades, and the helical blades are distributed at equal pitches. The two sides of the horizontal bone line of the spiral blade are gradually thickened from outside to inside, which is helpful for improving the uniformity of the airflow passing through the inducer 31 and effectively reducing the impact loss of the airflow.
As best possible, the barrel 1 is provided with a constriction 12, as shown in fig. 1, the constriction 12 being located between the impeller assembly 3 and the laminar flow assembly 4. The constriction 12 is capable of compressing the gas stream and assisting the gas stream in forming a protective layer in a stable, laminar flow.
The above embodiments are merely illustrative of the technical solutions of the application and not restrictive, and although the present application is described in detail with reference to the embodiments, those of ordinary skill in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A welding gun for non-consumable inert gas arc welding is characterized by comprising a gun barrel, an impeller assembly, an electrode and a laminar flow assembly,
the electrode, the impeller assembly and the laminar flow assembly are all arranged in the gun barrel, the electrode is arranged along the length direction of the gun barrel, the impeller assembly is far away from the nozzle of the gun barrel, the laminar flow assembly is positioned between the nozzle of the gun barrel and the impeller assembly,
the impeller assembly is coupled to the electrode, the laminar flow assembly is coupled to the barrel,
the air flow flowing through the gun barrel can drive the impeller assembly to rotate, so that the impeller assembly drives the electrode to rotate, and the laminar flow assembly can change the flowing state of the air flow into a laminar flow state.
2. The welding gun for non-MIG arc welding according to claim 1,
the laminar flow component comprises an outer cylinder body, an inner cylinder body and a plurality of laminar flow plates,
the inner cylinder body is positioned in the outer cylinder body, the axis of the inner cylinder body is superposed with the axis of the outer cylinder body,
the laminar flow plate is positioned between the outer cylinder and the inner cylinder and is used for connecting the outer cylinder and the inner cylinder,
wherein the electrode passes through the inner cylinder and the outer cylinder is connected to the barrel.
3. The welding gun for non-MIG arc welding according to claim 2,
the laminar flow assembly is fixedly connected with the gun barrel in a threaded mode,
the side wall of the outer cylinder body is provided with a blind hole with internal threads, the side wall of the gun barrel is provided with a through hole,
the blind hole is matched with the through hole and is connected with the laminar flow assembly and the gun barrel through a fastener.
4. The welding gun for non-MIG arc welding according to claim 3,
the laminar flow assembly also includes a bearing mount formed to extend outwardly along a sidewall of the inner cylinder,
the bearing mounting seat is used for mounting a bearing,
wherein, the electrode passes through the bearing, the bearing mount pad with bearing interference fit.
5. The welding gun for non-MIG arc welding according to claim 2,
the laminar flow plates are in scattered distribution relative to the inner cylinder, and included angles between every two adjacent laminar flow plates are equal.
6. The welding torch for non-SMAW welding according to any one of claims 1 to 5, wherein the welding torch is a torch for a gas-metal arc welding torch,
the impeller assembly comprises a hollow shaft and an inducer,
the hollow shaft is sleeved on the electrode, and the inducer is sleeved on the hollow shaft.
7. The welding gun for non-tig arc welding according to claim 6, wherein the inducer includes 3 helical blades that are distributed with equal pitch therebetween.
8. The welding gun for non-tig arc welding according to claim 7, wherein the spiral blade is gradually thickened from outside to inside on both sides of a horizontal bone line.
9. The welding gun for non-SMAW welding according to claim 1, wherein the gun barrel is provided with a constricted portion,
the constriction is located between the impeller assembly and the laminar flow assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022808802.9U CN213945234U (en) | 2020-11-27 | 2020-11-27 | Welding gun for non-consumable electrode inert gas shielded arc welding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022808802.9U CN213945234U (en) | 2020-11-27 | 2020-11-27 | Welding gun for non-consumable electrode inert gas shielded arc welding |
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| CN213945234U true CN213945234U (en) | 2021-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797406A (en) * | 2022-06-29 | 2022-07-29 | 浙大城市学院 | Self-adaptive rotary electrode low-temperature plasma reactor |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797406A (en) * | 2022-06-29 | 2022-07-29 | 浙大城市学院 | Self-adaptive rotary electrode low-temperature plasma reactor |
| US11786863B1 (en) | 2022-06-29 | 2023-10-17 | Hangzhou City University | Low temperature plasma reactor having adaptive rotating electrode |
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