CN210451320U - Protective gas flow guiding device for stud welding - Google Patents
Protective gas flow guiding device for stud welding Download PDFInfo
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- CN210451320U CN210451320U CN201921309154.3U CN201921309154U CN210451320U CN 210451320 U CN210451320 U CN 210451320U CN 201921309154 U CN201921309154 U CN 201921309154U CN 210451320 U CN210451320 U CN 210451320U
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Abstract
The utility model relates to the field of welding machinery, a protective gas guiding device for stud welding is disclosed. When the protective gas flow guiding device for stud welding is adopted for welding, one end of the gas hood is abutted against the surface of a workpiece to be welded, so that one end of the gas flow through hole is closed, protective gas enters the flow guiding cavity through the gas guide tube, enters one end of the gas flow through hole, which is close to the workpiece to be welded, of the gas flow through hole from the gas flow cavity, and is discharged through the central exhaust through hole, so that electric arc is completely isolated from air, gas holes are prevented from being generated in welding seams, and the welding quality is improved; and the flow guide cavity is formed between the outer wall of the flow guide inserting core and the inner wall of the air circulation hole, so that the protective gas is uniformly diffused into the air hood along the circumferential direction. The utility model provides a protective gas guiding device for stud welding's simple structure, whole occupation space is little moreover, can be applicable to the drawn arc formula stud welding machine of various models, and the commonality is strong.
Description
Technical Field
The utility model relates to the field of welding machinery, especially, relate to a protective gas guiding device is used in stud welding.
Background
The Arc Stud Welding (Arc Stud Welding) mainly comprises three types, namely Short Cycle Arc Stud Welding (Short Cycle Stud Welding), Gas shielded Stud Welding (Gas protected Stud Welding) and long Cycle Arc Stud Welding (draw Arc Stud Welding), wherein the Gas shielded Stud Welding is an important branch in the Arc Stud Welding technology, has a wide application range, and has the advantages of good Welding effect and environmental protection in use.
The working principle of the gas shielded stud welding is that air around an electric arc is isolated by inert gas, so that the purpose of stable welding is achieved. The less the air around the arc, the less the probability of generating air holes in the weld, the more uniform the protective gas is released, and the more uniform and full the shape of the formed weld. The existing protective gas guiding device for stud welding has the problems of insufficient air separation, uneven protective gas release, too complex protective cover structure and the like when welding, easily causes the problems of air holes generated in welding seams, uneven welding seams, large deviation of welding positioning centrality and the like, and further influences the welding quality and the welding positioning precision.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a protective gas guiding device is used in stud welding can completely cut off welding arc and air through protective gas.
To achieve the purpose, the utility model adopts the following technical proposal:
a shielding gas flow guiding device for stud welding comprises:
the flow guide inserting core is provided with a central exhaust through hole;
the gas hood is provided with an airflow through hole, and one end of the gas hood can abut against the surface of a workpiece to be welded so that one end of the airflow through hole is sealed; one end of the flow guide inserting core is inserted into the air flow through hole, a flow guide cavity is formed between the outer wall of the flow guide inserting core and the inner wall of the air flow through hole, and one end of the flow guide cavity is communicated with the central exhaust through hole through the air flow through hole;
and the other end of the diversion cavity is communicated with the air duct.
As a preferable technical scheme of the shielding gas flow guiding device for stud welding, the shielding gas flow guiding device further comprises a base connected with the flow guiding insertion core, one end of the flow guiding insertion core extends out of the gas hood and is inserted into the base, and a first flow guiding cavity is formed between the outer wall of the flow guiding insertion core and the inner wall of the base.
As a preferred technical solution of the shielding gas flow guiding device for stud welding, a flow guiding groove communicated with the first flow guiding chamber is formed in an outer wall of the flow guiding insert core, and a second flow guiding chamber is formed between the flow guiding groove and an inner wall of the air flow through hole.
As a preferable technical solution of the shielding gas flow guiding device for stud welding, a plurality of flow guiding grooves are provided, and the plurality of flow guiding grooves are distributed along the circumferential direction of the flow guiding insertion core.
As an optimal technical scheme of the shielding gas flow guiding device for stud welding, an annular protrusion is arranged on the outer wall of the flow guiding insertion core, a first limiting surface is arranged on the inner wall of the airflow through hole, a second limiting surface is arranged on the inner wall of the base, and the annular protrusion is clamped between the first limiting surface and the second limiting surface.
As a preferable technical solution of the shielding gas flow guiding device for stud welding, the flow guiding insert core comprises a first section, and the first section is arranged at one end of the annular protrusion departing from the first flow guiding chamber;
and a third flow guide cavity is formed between the outer wall of the first section and the inner wall of the airflow through hole and is communicated with the second flow guide cavity.
As an optimal technical scheme of the shielding gas flow guiding device for stud welding, a chamfer is arranged at one end of the first section, which is far away from the annular protrusion, a fourth flow guiding cavity is formed between the outer wall of the chamfer and the inner wall of the airflow through hole, and the fourth flow guiding cavity is communicated with the third flow guiding cavity.
As a preferred technical solution of the shielding gas flow guiding device for stud welding, the gas guiding tube is connected to the base and is communicated with the first flow guiding chamber.
As a preferable technical solution of the shielding gas flow guiding device for stud welding, the base and the flow guiding insert are connected by a threaded fastener.
The utility model has the advantages that: when the protective gas flow guiding device for stud welding is adopted for welding, one end of the gas hood is abutted against the surface of a workpiece to be welded, so that one end of the gas flow through hole is sealed, protective gas enters the flow guiding cavity through the gas guide tube and enters one end of the gas flow through hole, close to the workpiece to be welded, of the gas flow through hole from the gas flow cavity, so that gas in the gas flow cavity is discharged through the central exhaust through hole, electric arc is completely isolated from air, gas holes are prevented from being generated in a welding seam, and welding quality is improved; and the flow guide cavity is formed between the outer wall of the flow guide inserting core and the inner wall of the air circulation hole, so that the protective gas is uniformly diffused into the air hood along the circumferential direction. The utility model provides a protective gas guiding device for stud welding's simple structure, whole occupation space is little moreover, can be applicable to the drawn arc formula stud welding machine of various models, and the commonality is strong.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is an exploded view of a shielding gas guiding device for stud welding according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a shielding gas guiding device for stud welding according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view at a in fig. 2.
In the figure:
1. a flow guide inserting core; 10. a central exhaust through hole; 11. a first stage; 12. a second stage; 13. an annular projection; 14. a third stage; 15. chamfering; 16. a diversion trench;
2. a gas hood; 21. an airflow through hole; 211. a first limiting surface;
3. an air duct;
4. a base; 41. perforating holes; 411. a second limiting surface; 42. mounting holes;
5. a threaded fastener; 6. a gas pipe joint.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
As shown in fig. 1 and fig. 2, in the embodiment, the shielding gas guiding device for stud welding is provided, and when welding is performed, a welding position is always in a shielding gas environment in a welding process through the shielding gas guiding device for stud welding, so that a welding arc is isolated from air, gas holes are prevented from being generated in a welding seam, and welding quality is improved.
Specifically, the protective gas guiding device for stud welding comprises a guiding insertion core 1, a gas hood 2 and a gas guide tube 3, wherein a central exhaust through hole 10 is formed in the guiding insertion core 1, an airflow through hole 21 is formed in the gas hood 2, one end of the guiding insertion core 1 is inserted into the airflow through hole 21, a guiding cavity is formed between the outer wall of the guiding insertion core 1 and the inner wall of the airflow through hole 21, one end of the guiding cavity is communicated with the airflow through hole 21, and the other end of the guiding cavity is communicated with the gas guide tube 3; one end of the gas hood 2 can abut against the surface of the workpiece to be welded so that one end of the gas flow through hole 21 is closed to discharge the gas inside the gas flow through hole 21 through the central exhaust through hole 10. Preferably, the protective gas is an inert gas.
When the protective gas flow guiding device for stud welding is adopted for welding, one end of the gas hood 2 is abutted against the surface of a workpiece to be welded, so that one end of the gas flow through hole 21 is closed, protective gas enters the flow guiding cavity through the gas guide tube 3 and enters one end, close to the workpiece to be welded, of the gas flow through hole 21 from the gas flow cavity, so that the gas in the gas flow cavity is discharged through the central exhaust through hole 10, electric arc is isolated from air, air holes are prevented from being generated in a welding seam, and welding quality is improved; and the guide chamber is formed between the outer wall of the guide insert 1 and the inner wall of the air flow hole 21, so that the protective gas is uniformly diffused into the gas hood 2 along the circumferential direction.
Further, the shielding gas guiding device for stud welding provided by the embodiment further includes a base 4, and the base 4 is provided with a through hole 41 extending along an axial direction thereof, and a plurality of mounting holes 42 extending along a radial direction thereof. One end of the gas hood 2 extends into the through hole 41, and one end of the threaded fastener 5 passes through the mounting hole 42 and abuts against the outer wall of the gas hood 2, so as to connect the gas hood 2 to the base 4. Preferably, the plurality of mounting holes 42 are uniformly distributed along the circumferential direction of the base 4, and the threaded fasteners 5 are fastening screws.
As shown in fig. 2 and 3, the inner wall of the airflow through hole 21 is provided with a first limiting surface 211, the inner wall of the through hole 41 is provided with a second limiting surface 411, the guide insert 1 includes a first section 11, a second section 12, an annular protrusion 13 and a third section 14 which are sequentially arranged along the axial direction, wherein the outer diameter of the annular protrusion 13 is larger than the outer diameter of the second section 12 and larger than the outer diameter of the third section 14, one end of the guide insert 1 extends out of the gas hood 2 and is inserted into the base 4, so that the third section 14 abuts against the second limiting surface 411, and the stepped surface formed by the annular protrusion 13 and the second section 12 abuts against the first limiting surface 211, so that one end of the guide insert 1 is clamped between the base 4 and the gas hood 2.
In this embodiment, the first limiting surface 211 is a conical surface, and is sealed by the conical surface, so that the sealing effect between the gas hood 2 and the flow guide insertion core 1 is improved, and the protective gas enters the third flow guide cavity only through the second flow guide cavity, so that the distribution of the protective gas in the third flow guide cavity is more uniform.
Because the outer diameter of the annular protrusion 13 is larger than the outer diameter of the third section 14, when the third section 14 abuts against the second limiting surface 411, a first flow guide chamber is formed between the outer wall of the third section 14 and the inner wall of the through hole 41, and the upper portion of the first flow guide chamber is sealed by the second limiting surface 411. The first diversion cavity is communicated with the air duct 3 so as to send the protective gas into the first diversion cavity through the air duct 3.
In this embodiment, the circumferential outer wall of the annular protrusion 13 abuts against the inner wall of the airflow through hole 21, the circumferential outer wall of the second section 12 abuts against the inner wall of the airflow through hole 21, and a third diversion chamber is formed between the circumferential outer wall of the first section 11 and the inner wall of the airflow through hole 21. The arrangement ensures that the first diversion cavity is not communicated with the second diversion cavity, therefore, a diversion trench 16 is arranged on the circumferential outer wall of the diversion insert core 1, a second diversion cavity is formed between the diversion trench 16 and the inner wall of the airflow through hole 21, and two ends of the second diversion cavity are respectively communicated with the first diversion cavity and the third diversion cavity. Specifically, the above-mentioned baffle groove 16 is disposed through the third section 14, the annular protrusion 13 and the second section 12. The guide grooves 16 are provided in a plurality, and the guide grooves 16 are uniformly distributed along the circumferential direction of the guide insert core 1. Illustratively, there are three channels 16.
Further, as shown in fig. 1, a chamfer 15 is arranged at one end of the first section 11, which is away from the annular protrusion 13, a fourth diversion chamber is formed between the outer wall of the chamfer 15 and the inner wall of the airflow through hole 21, and the fourth diversion chamber is communicated with the third diversion chamber.
The setting of above-mentioned second water conservancy diversion cavity can make the even entering third water conservancy diversion cavity of gas in the first water conservancy diversion cavity, and fourth water conservancy diversion cavity can make and get into the pressure reduction in the fourth water conservancy diversion cavity by third water conservancy diversion cavity, make the protective gas can be full of earlier and get into in the fourth water conservancy diversion cavity after the third water conservancy diversion cavity, guarantee that protective gas gets into in the gas circulation hole 21 from the fourth water conservancy diversion cavity uniformly, thereby solve because of protective gas release inhomogeneous and cause the pleasing to the eye and the welding strength's of influence welding seam such as unilateral welding seam problem.
Further, be equipped with on the base 4 along its radial air vent that extends, the air vent with wear to establish hole 41 intercommunication, then make air vent and first water conservancy diversion cavity intercommunication, connect air duct 3 in base 4 through tracheal joint 6 to make air duct 3 and air vent intercommunication. As for how the air pipe connector 6 connects the air duct 3 to the base 4, two ends of the air pipe connector 6 can be respectively in threaded connection with the air duct 3 and the air vent so as to communicate the air duct 3 with the first diversion cavity.
When the protective gas guiding device for stud welding is adopted for welding, one end of the gas hood 2 is abutted against the surface of a workpiece to be welded so that one end of the air flow through hole 21 is sealed, referring to the flow direction of protective gas shown by an arrow in figure 2, the protective gas enters the first guiding cavity through the gas guide pipe 3, then sequentially flows into the third guiding cavity and the fourth guiding cavity through the second guiding cavity formed by the guiding groove 16 and the inner wall of the air flow through hole 21, then enters the end, close to the workpiece to be welded, of the air flow through hole 21 through the fourth guiding cavity, because one end of the gas hood 2 is abutted against the surface of the workpiece to be welded, one end, close to the workpiece to be welded, of the air flow through hole 21 is sealed, the protective gas and the air entering the air flow through hole 21 push the protective gas and the air in the protective gas and the air to enter the central exhaust through hole 10 and then the central exhaust through hole 10 is, air holes are not generated on the welding line in the welding process, and the welding quality is improved.
By adopting the protective gas flow guide device for stud welding, the length of the gas hood 2 can be reduced by 30-50 mm on the basis of completely isolating welding electric arcs from air through protective gas, so that the centrality deviation of the gas hood 2 relative to the base 4 is improved, and the problem of large centrality deviation of welding positioning in the prior art is solved; on the premise that the length of the gas hood 2 is reduced, the length of a chuck of the welding gun can be reduced, and the overall occupied space is reduced.
The shielding gas flow guide device for stud welding provided by the embodiment is simple in structure, small in overall occupied space, capable of being suitable for arc-discharge stud welding machines of various models and high in universality.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (9)
1. The utility model provides a protective gas guiding device for stud welding which characterized in that includes:
the flow guide insertion core (1), wherein a central exhaust through hole (10) is formed in the flow guide insertion core (1);
the welding device comprises a gas hood (2), wherein an air flow through hole (21) is formed in the gas hood (2), one end of the gas hood (2) can abut against the surface of a workpiece to be welded, and one end of the air flow through hole (21) is sealed; one end of the flow guide insertion core (1) is inserted into the air flow through hole (21), a flow guide cavity is formed between the outer wall of the flow guide insertion core (1) and the inner wall of the air flow through hole (21), and one end of the flow guide cavity is communicated with the central exhaust through hole (10) through the air flow through hole (21);
the other end of the diversion cavity is communicated with the air duct (3).
2. The shielding gas flow guiding device for stud welding according to claim 1, further comprising a base (4) connected with the flow guiding insert core (1), wherein one end of the flow guiding insert core (1) extends out of the gas hood (2) and is inserted into the base (4), and a first flow guiding chamber is formed between the outer wall of the flow guiding insert core (1) and the inner wall of the base (4).
3. The shielding gas flow guiding device for stud welding according to claim 2, characterized in that the outer wall of the flow guiding insert (1) is provided with a flow guiding groove (16) communicated with the first flow guiding chamber, and a second flow guiding chamber is formed between the flow guiding groove (16) and the inner wall of the gas flow through hole (21).
4. The shielding gas flow guiding device for stud welding according to claim 3, wherein the flow guiding groove (16) is provided in plurality, and the plurality of flow guiding grooves (16) are distributed along the circumferential direction of the flow guiding insert core (1).
5. The shielding gas flow guiding device for stud welding according to claim 3, wherein an annular protrusion (13) is arranged on the outer wall of the flow guiding insert core (1), a first limiting surface (211) is arranged on the inner wall of the airflow through hole (21), a second limiting surface (411) is arranged on the inner wall of the base (4), and the annular protrusion (13) is clamped between the first limiting surface (211) and the second limiting surface (411).
6. The shielding gas flow guiding device for stud welding according to claim 5, characterized in that the flow guiding insert (1) comprises a first section (11), the first section (11) being provided at an end of the annular protrusion (13) facing away from the first flow guiding chamber;
and a third flow guide cavity is formed between the outer wall of the first section (11) and the inner wall of the airflow through hole (21), and the third flow guide cavity is communicated with the second flow guide cavity.
7. The shielding gas flow guiding device for stud welding according to claim 6, characterized in that an end of the first section (11) facing away from the annular protrusion (13) is provided with a chamfer (15), a fourth flow guiding chamber is formed between an outer wall of the chamfer (15) and an inner wall of the gas flow through hole (21), and the fourth flow guiding chamber is communicated with the third flow guiding chamber.
8. The shielding gas flow guiding device for stud welding according to any one of claims 2 to 7, characterized in that the gas guiding tube (3) is connected to the base (4) and communicates with the first flow guiding chamber.
9. The shielding gas flow guiding device for stud welding according to any one of claims 2 to 7, characterized in that the base (4) and the flow guiding insert (1) are connected by means of a threaded fastener (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921309154.3U CN210451320U (en) | 2019-08-13 | 2019-08-13 | Protective gas flow guiding device for stud welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921309154.3U CN210451320U (en) | 2019-08-13 | 2019-08-13 | Protective gas flow guiding device for stud welding |
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| Publication Number | Publication Date |
|---|---|
| CN210451320U true CN210451320U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921309154.3U Active CN210451320U (en) | 2019-08-13 | 2019-08-13 | Protective gas flow guiding device for stud welding |
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| CN (1) | CN210451320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618199A (en) * | 2021-08-05 | 2021-11-09 | 上海悦仕焊接技术有限公司 | Method for reducing safety risk of main current transformer of welding machine and welding machine |
-
2019
- 2019-08-13 CN CN201921309154.3U patent/CN210451320U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618199A (en) * | 2021-08-05 | 2021-11-09 | 上海悦仕焊接技术有限公司 | Method for reducing safety risk of main current transformer of welding machine and welding machine |
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