CN217343997U - Protective gas nozzle for single laser self-melting welding - Google Patents
Protective gas nozzle for single laser self-melting welding Download PDFInfo
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- CN217343997U CN217343997U CN202221223751.6U CN202221223751U CN217343997U CN 217343997 U CN217343997 U CN 217343997U CN 202221223751 U CN202221223751 U CN 202221223751U CN 217343997 U CN217343997 U CN 217343997U
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Abstract
The utility model relates to a laser welding technical field particularly relates to single laser is from melting welding with protection gas nozzle, include: the method comprises the following steps: the gas delivery pipeline is used for delivering inert gas; the air inlet end of the connecting pipe is connected to the outlet of the air feeding pipeline; the nozzle is connected to the exhaust end of the connecting pipe, so that the air supply pipeline, the connecting pipe and the nozzle are communicated, and inert gas can be blown out of the nozzle; and the first end of the multi-freedom-degree tool is connected to the welding manipulator, and the second end of the multi-freedom-degree tool is clamped to the surface of the connecting pipe. Through optimizing the diversified adjustable air cock protection frock of self-welding of knowable list laser, the adjustment is high, and easy operation can adjust the spatial position and the angle of air cock to utilize the accurate control of air flow valve to protect the gas flow size, can provide good gas protection for laser welding, provide good positive forming condition, in addition, through the connection design of connecting pipe, make the part change convenient, the nozzle selection is various.
Description
Technical Field
The utility model relates to a laser welding technical field particularly relates to single laser is from melting welding with protection gas nozzle.
Background
In laser welding, the purpose of protecting the gas nozzle is to blow inert gas to a molten pool at a certain speed under a high temperature and a certain air pressure, so that molten metal is cooled and solidified under the protection of the molten metal, a good protection effect is achieved, the protective gas can affect weld forming, weld quality, weld penetration, weld width and the like, and the protective gas blown at a proper angle and speed can have a favorable effect on the weld.
Because of the difference of welding materials and welding processes, the area of the formed molten pool and the number of air holes in the molten pool can be changed, and for the changes, the advantages of reducing the oxidation of the molten pool, reducing splashing, uniformly spreading the molten pool when the molten pool is solidified, reducing air holes of welding seams and the like can be achieved by controlling the blowing angle and the blowing speed of the protective air nozzle.
However, the protection air cock that uses at present all is simple self-control, can not adjustment angle on a large scale, and the gas flow size can only go through the gas cylinder relief pressure valve and adjust, is unfavorable for experimental the going on, therefore has urgently needed a convenient simple, the protection gas nozzle of easily adjusting.
SUMMERY OF THE UTILITY MODEL
Defect and not enough to protection gas nozzle among the prior art, the utility model discloses aim at can be convenient control protection gas nozzle's the angle of blowing to can adjust protection gas nozzle's spatial position, make the direction of blowing, distance and the speed of protection gas reach ideal state.
The utility model provides a single laser is from melting welding with protection gas nozzle, include:
the gas delivery pipeline is used for delivering inert gas;
the air inlet end of the connecting pipe is connected to the outlet of the air feeding pipeline;
the nozzle is connected to the exhaust end of the connecting pipe, so that the gas supply pipeline, the connecting pipe and the nozzle are communicated, and inert gas can be blown out of the nozzle;
the first end of the multi-degree-of-freedom tool is connected to the welding manipulator, and the second end of the multi-degree-of-freedom tool is clamped to the surface of the connecting pipe;
wherein, the second end of the connecting pipe is provided with a spherical connecting part, one end of the nozzle is provided with a sphere, and the sphere is arranged to be tightly connected with the spherical connecting part, so that the nozzle is kept at the position after being rotated to a preset angle.
Preferably, the exhaust end of connecting pipe is equipped with the undergauge portion, the inner wall of undergauge portion forms the spherical profile cambered surface that reduces gradually by inlet end to exhaust end direction diameter, the spheroid surface with the laminating of spherical profile cambered surface.
Preferably, the tail end of the air supply pipeline is provided with a transition pipe, the air inlet end of the connecting pipe is provided with internal threads, and the transition pipe is in threaded connection with the connecting pipe.
Preferably, the internal diameter of the internal thread is larger than the external diameter of the ball.
Preferably, the multi-degree-of-freedom tool comprises a plurality of connecting plates which are connected end to end, every two connecting plates are hinged through a rotating shaft, the connecting plate at the first end is used for being connected to a load surface, and the connecting plate at the second end is provided with a clamp used for clamping the surface of the connecting pipe.
Preferably, adjacent connecting plates are hinged by using a bolt as a rotating shaft, and when the bolt is tightened, two adjacent connecting plates are fixed relatively.
Preferably, the clamp comprises a clamp band.
Preferably, the nozzle and the ball body are made of copper materials, and the connecting pipe is made of steel materials.
Preferably, an air flow valve is arranged on the air supply pipeline and used for adjusting the air flow quantity entering the nozzle.
Compared with the prior art, the utility model has the advantages of:
through optimizing the diversified adjustable air cock protection frock of self-welding of knowable list laser, the adjustment is high, and easy operation can adjust the spatial position and the angle of air cock to utilize the accurate control of air flow valve to protect the gas flow size, can provide good gas protection for laser welding, provide good positive forming condition, in addition, through the connection design of connecting pipe, make the part change convenient, the nozzle selection is various.
Drawings
The figures are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view showing a state of use of a shielding gas nozzle for single laser autogenous welding according to the present invention;
FIG. 2 is a schematic structural view of a shielding gas nozzle for single laser autogenous welding according to the present invention;
fig. 3 is a schematic cross-sectional structure diagram of the connecting pipe of the present invention.
Detailed Description
For a better understanding of the technical aspects of the present invention, specific embodiments are described below in conjunction with the appended drawings.
Example 1
Referring to fig. 1, in laser self-fluxing welding, a laser welding head 100 emits laser to irradiate the surface of a substrate to be welded, so that the metal surface is heated and melted to form a molten pool, and workpieces to be welded are connected to form a whole after the molten pool is solidified; in the process of forming the molten pool, the contact between the surface of the molten pool and air needs to be controlled to prevent the surface from being oxidized, therefore, the shielding gas nozzle is positioned at one side of the molten pool to provide inert shielding gas, and in order to achieve better protection effect, for example, according to the area of the formed molten pool, the cladding speed and the like, the air supply amount and the air supply angle of the shielding gas need to be adjusted adaptively, so that the formed welding bead reaches the target requirement, therefore, the utility model provides a shielding gas nozzle for single-laser self-melting welding, which can be favorable for the free adjustment of the air supply angle and the air supply amount of workers.
As shown in fig. 1, the shielding gas nozzle for single laser self-fluxing welding comprises a gas supply pipe 31, a connecting pipe 2 and a nozzle 4, wherein a gas inlet end of the gas supply pipe 31 is connected with a gas source for supplying gas into the gas supply pipe 31, the gas supply pipe 31 is connected with the nozzle 4 through the connecting pipe 2, the gas supply pipe 31, the connecting pipe 2 and the nozzle 4 are communicated, and inert gas is sprayed out from the nozzle 4.
Furthermore, one end of the multi-degree-of-freedom tool 1 is connected to the welding manipulator, and the other end of the multi-degree-of-freedom tool clamps the connecting pipe 2 and is used for determining the spatial position of the connecting pipe 2 so that the nozzle 4 is away from the welding spot by a proper distance.
In order to facilitate the change of the angle of the air flow from the nozzle 4, the second end of the connection tube 2 is provided with a spherical connection portion, and one end of the nozzle 4 is provided with a ball 41, and the ball 41 is arranged to be tightly connected with the spherical connection portion so that the nozzle 4 is rotated to a predetermined angle and then held at the predetermined position.
Therefore, the blowing angle of the nozzle 4 can be changed through the sphere 41 with the connecting pipe 2, the space position of the connecting pipe 2 can be adjusted through the multi-degree-of-freedom tool 1 as a whole, the relative position of a blowing port relative to a molten pool can be changed, good gas protection can be provided for laser welding, and good front forming conditions are provided.
Furthermore, in order to facilitate control of the flow rate of the gas flow blown out from the nozzle, a gas flow valve 3 is provided in the gas supply duct 31, and the flow rate of the inert gas blown out from the nozzle 4 can be accurately controlled by adjusting the opening degree of the gas flow valve 3.
Further, as shown in fig. 1-2, the air inlet end of the connection pipe 2 is provided with an internal thread 22, the air outlet end of the airflow valve 3 is provided with a section of transition pipe 32, which is designed to match the diameters of the connection pipe 2 and the airflow valve, and the transition pipe 32 is in threaded connection with the air inlet end of the connection pipe 2 through the internal thread 22 and an external thread 321.
So, through threaded connection's mode convenient to detach, after nozzle 4 is damaged by heat radiation, can twist out transition pipe 32, in time make nozzle 4 follow the inner wall roll-off of connecting pipe 2 and demolish, and renew nozzle 4 again.
Referring to fig. 3, in a specific embodiment, the exhaust end of the connection pipe 2 is provided with a reducing portion 21, an inner wall of the reducing portion 21 forms a spherical contour arc surface with a diameter gradually decreasing from the intake air to the exhaust direction, the surface of the sphere 41 is attached to the spherical contour arc surface, and the inner diameter of the internal thread 22 is larger than the outer diameter of the sphere 41.
In this way, the nozzle 4 can be inserted into the connection pipe 2 from the inlet end (right side in the figure) of the connection pipe 2, the ball 41 is engaged in the reduced diameter portion 21, and the transition pipe 32 is connected to the inlet end of the connection pipe 2, thereby completing the assembly.
Wherein the sphere 41 and the connection tube 2 are tightly connected, for example, the diameter of the sphere 41 is slightly larger than the inner diameter of the connection tube 2, and when the sphere 41 is assembled in the reduced diameter portion 21, the sphere 41 can rotate relatively in the reduced diameter portion 21 only when the nozzle 4 is rotated by an external force, and when the external force disappears, the nozzle 4 and the connection tube 2 maintain a relatively fixed angle.
Example 2
The difference from embodiment 1 is that the diameter of the ball 41 is the same as the inner diameter of the connecting tube 2, wherein the surface of the ball 41 is provided with an annular groove, preferably perpendicular to the axial direction of the nozzle 4, in which a rubber ring is clamped, so that the ball 41 and the connecting tube 2 are held fixed relative to each other by the pressing force of the rubber ring against the inner wall of the connecting tube 2.
Example 3
Referring to fig. 1-2, the multi-degree-of-freedom tooling 1 includes three connecting plates connected end to end, a first connecting plate 1, a second connecting plate 2 and a third connecting plate 3, wherein every two connecting plates are hinged through a rotating shaft, the first connecting plate 1 is used for connecting to a load surface, and one end of the third connecting plate 3 is provided with a clamp 14 for clamping to the surface of the connecting pipe 2.
Wherein, first connecting plate 1 is the L type, has the terminal surface with the holding surface laminating, has seted up two holes on the terminal surface for screw installed parts such as mounting screw or bolt.
Specifically, adjacent connecting plates are hinged through bolts as rotating shafts, namely, one ends, close to each other, of the two adjacent connecting plates are penetrated through by one bolt, and when the bolts are screwed down, the nuts press the two connecting plates to enable the two adjacent connecting plates to be relatively fixed.
In an alternative embodiment, the clamp 14 comprises a clamp band including two saddle-shaped band bodies, which are respectively located on both sides of the connecting tube 2, and which clamp the connecting tube 2 after being screwed together, and one end of the clamp 14 is connected to the third connecting plate 3 by a bolt.
So, through the relative angle of control first connecting plate 1, second connecting plate 2 and third connecting plate 3, can change the spatial position of connecting pipe 2, be favorable to increasing the space gesture of nozzle 4.
In the above embodiment, the nozzle 4 and the ball 41 are made of integrally formed copper, preferably red copper, and the connection pipe 2 and other accessories are made of steel, preferably Q345 steel.
Combine above embodiment, can know single laser from the diversified adjustable air cock protection frock of fusion welding through optimizing, the adjustment is high, and easy operation can adjust the spatial position and the angle of air cock to utilize the accurate control of air current valve to protect the gas flow size, can provide good gas protection for laser welding, provide good positive forming condition, in addition, through the connection design of connecting pipe, make the part change convenient, the nozzle selection is various.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is well known in the art and can be modified and decorated without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the claims.
Claims (9)
1. A shielding gas nozzle for single laser self-fluxing welding, comprising:
a gas feed pipe (31) for feeding an inert gas;
a connection pipe (2) having a first end connected to a distal end of the air supply duct (31);
a nozzle (4) connected to a second end of the connection tube (2) for blowing out an inert gas from the nozzle (4);
the first end of the multi-degree-of-freedom tool (1) is connected to the welding manipulator, and the second end of the multi-degree-of-freedom tool is clamped to the surface of the connecting pipe (2);
wherein the second end of the connecting pipe (2) is provided with a spherical connecting part, one end of the nozzle (4) is provided with a sphere (41), and the sphere (41) is arranged to be tightly connected with the spherical connecting part, so that the nozzle (4) is kept at the position after being rotated to a preset angle.
2. The shielding gas nozzle for single laser self-fluxing welding of claim 1, wherein the second end of the connecting tube (2) is provided with a reduced diameter portion (21), an inner wall of the reduced diameter portion (21) forms a spherical contour arc surface with a diameter gradually decreasing from the first end to the second end, and the surface of the sphere (41) is attached to the spherical contour arc surface.
3. The shielding gas nozzle for single-laser autogenous welding according to claim 1, characterized in that the end of the gas supply pipe (31) is provided with a transition pipe (32), the second end of the connecting pipe (2) is provided with an internal thread, and the transition pipe (32) is in threaded connection with the connecting pipe (2).
4. The shielding gas nozzle for single laser autogenous welding according to claim 3, characterized in that the internal diameter of the internal thread (22) is greater than the external diameter of the sphere (41).
5. The shielding gas nozzle for single-laser self-fluxing welding according to claim 1, wherein the multi-degree-of-freedom tooling comprises three connecting plates connected end to end, each two connecting plates are hinged through a rotating shaft, the connecting plate at the first end is used for being connected to a welding manipulator, and the connecting plate at the second end is provided with a clamp (14) used for clamping to the surface of the connecting pipe (2).
6. The shielding gas nozzle for single laser self-fluxing welding of claim 5, wherein adjacent ones of said connection plates are hinged by a bolt as a pivot, and when said bolt is tightened, adjacent ones of said connection plates are relatively fixed.
7. The shielding gas nozzle for single laser autogenous welding according to claim 5, characterized in that the clamp (14) comprises a clamping band.
8. The shielding gas nozzle for single laser autogenous welding according to any one of claims 1 to 7, characterized in that the nozzle (4) and the ball (41) are copper material and the connecting piece (2) is steel material.
9. The shielding gas nozzle for single laser autogenous welding according to any of claims 1 to 7, characterized in that a gas flow valve (3) is provided on the gas supply duct (31), the gas flow valve (3) being used to regulate the amount of gas flow into the nozzle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221223751.6U CN217343997U (en) | 2022-05-19 | 2022-05-19 | Protective gas nozzle for single laser self-melting welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221223751.6U CN217343997U (en) | 2022-05-19 | 2022-05-19 | Protective gas nozzle for single laser self-melting welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217343997U true CN217343997U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221223751.6U Active CN217343997U (en) | 2022-05-19 | 2022-05-19 | Protective gas nozzle for single laser self-melting welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217343997U (en) |
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2022
- 2022-05-19 CN CN202221223751.6U patent/CN217343997U/en active Active
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