CN219379297U

CN219379297U - Spray head of welding gun shielding gas

Info

Publication number: CN219379297U
Application number: CN202223517768.5U
Authority: CN
Inventors: 毛明民; 王兴波; 王俊杰
Original assignee: Changzhou China Welding And Cutting Equipment Co ltd
Current assignee: Changzhou China Welding And Cutting Equipment Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-07-21
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a spray head of a welding gun protective gas, which comprises a gas cap, wherein the right end of the gas cap is provided with a tungsten rod mounting hole, a gas channel is arranged in the gas cap at the left side of the tungsten rod mounting hole, a plurality of gas outlet holes are arranged on the inner wall of the middle part of the gas channel, a plurality of gas guide holes are arranged on the gas cap around the tungsten rod mounting hole, the right end of the gas guide holes are obliquely arranged towards the direction of the tungsten rod mounting hole, a cylindrical gas cover is also arranged outside the gas cap, the right end of the gas cap is positioned in the gas cover, and the gas outlet holes are positioned on the gas cap at a gas flow channel.

Description

Spray head of welding gun shielding gas

Technical Field

The utility model relates to the technical field of welding guns, in particular to a nozzle of a welding gun shielding gas.

Background

Argon arc welding is a welding technique using argon as a shielding gas. The argon arc welding technology is a welding technology which is based on the principle of ordinary arc welding and utilizes argon to protect a metal welding material, and melts the welding material into a liquid state on a welded base material through high current to form a molten pool, so that the welded metal and the welding material are metallurgically combined. However, in the existing argon arc welding gun in an environment with relatively high air flow intensity, the protective gas (argon) at the gun head is blown by air, the protective gas cannot effectively protect the welding part, partial oxidation is easily caused at the welding part, welding defects are formed, and the usability of a welding piece is affected.

Disclosure of Invention

The utility model aims to provide a spray head of a welding gun shielding gas, which overcomes the defects of the prior art.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a shower nozzle of welder shielding gas, includes the gas cap, the gas cap is pagoda type structure, the right-hand member of gas cap is equipped with tungsten stick mounting hole, be equipped with the air flue in the left gas cap of tungsten stick mounting hole, be equipped with a plurality of venthole on the inner wall at air flue middle part, be equipped with a plurality of air vent on the gas cap around the tungsten stick mounting hole, the right-hand member of air vent is towards the direction slope setting of tungsten stick mounting hole, the cylinder gas shield is still installed to the outside of gas cap, form the air current passageway between gas shield and the gas cap, the right-hand member of gas cap is located the inside of gas shield, and the venthole is located on the gas cap of air current passageway department.

Further, at least four air outlets are circumferentially distributed on the air cap.

Further, a partition plate is further arranged between two adjacent air outlet holes, the partition plate is axially arranged along the inner surface of the air cover, the inner side edge of the partition plate is in contact with the surface of the air cap, and the partition plate divides an air flow channel between the air cover and the air cap into a plurality of air flow areas.

Further, the number of the air guide holes is at least four, and the air guide holes are circumferentially distributed on the air cap.

Further, the inner surface of the air cap at the left end of the air passage is also provided with an internal thread.

Further, the air cover and the air cap are made of brass.

Further, the right end of the air guide hole is positioned on the inner surface of the air passage.

Compared with the prior art, the utility model has the following implementation effects: the spray head can carry out outward conveying of the protective gas through the gas outlet hole and the gas guide hole, and the gas guide hole is arranged towards the tungsten rod mounting hole, so that the protective gas flowing out of the gas guide hole can be directly blown to the surface of the tungsten rod, and then reaches the welding position; the gas cover enables the shielding gas flowing out of the gas outlet hole to blow to the welding part at the periphery of the tungsten rod, so that a circular shielding gas curtain is effectively formed, and external air can be prevented from entering the welding part; the partition board avoids mutual interference among the air outlet holes in the air flow channel, improves the stability of the air curtain, ensures that the spray head can be applied to welding in windy environment, and ensures the welding quality.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a right side view of the present utility model;

fig. 4 is a schematic structural view of the air cap.

Reference numerals illustrate: 1. an air cap; 11. an external thread; 2. an air outlet hole; 3. an air guide hole; 4. a tungsten rod mounting hole; 5. an internal thread; 6. a gas hood; 7. an air flow channel; 8. a partition board.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific direction to construct and operate in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-4, the nozzle of the welding gun protective gas of the utility model comprises a gas cap 1, wherein the gas cap 1 is of a pagoda type structure, an internal thread 5 is arranged on the inner surface of the left end of the gas cap 1, a tungsten rod mounting hole 4 is arranged at the right end of the gas cap 1, an air passage is arranged in the gas cap 1 between the tungsten rod mounting hole 4 and the internal thread 5, and a plurality of air outlet holes 2 are arranged on the inner wall of the middle part of the air passage, so that protective gas flows out from the periphery of the gas cap 1; as shown in fig. 2, at least four air outlet holes 2 are provided, the air outlet holes 2 are circumferentially distributed on the air cap 1, and less than 4 air outlet holes 2 can cause the downward flow of the protective air in the air flow channel to be uneven, so that a stable air curtain can not be formed.

The gas cap 1 around the tungsten rod mounting hole 4 is provided with a plurality of gas guide holes 3, and the number of the gas guide holes 3 is at least four, as shown in fig. 2, the gas guide holes 3 are circumferentially distributed on the gas cap 1, and when the number of the gas guide holes 3 is small, the protection gas cannot be ensured to effectively protect the periphery of the tungsten rod. The left end of the air vent 3 is positioned on the inner surface of the air passage, and the right end of the air vent 3 is obliquely arranged towards the direction of the tungsten rod mounting hole 4, so that the protective gas flowing out of the air vent 3 can be directly blown to the surface of the tungsten rod, and then directly reaches the welding position.

The outside of the air cap 1 is also provided with a cylindrical air cover 6 through an external thread 11, and the air cover 6 and the air cap 1 are made of brass so as to be beneficial to heat transfer; an air flow channel 7 is formed between the air cover 6 and the air cap 1, the right end of the air cap 1 is positioned in the air cover 6, the air outlet hole 2 is positioned on the air cap 1 at the air flow channel 7, the air cover 6 enables the protective air flowing out of the air outlet hole 2 to blow to the welding part at the periphery of the tungsten rod, a circular protective air curtain is effectively formed, and external air can be prevented from entering the welding part.

And still be equipped with baffle 8 between two adjacent ventholes 2, as shown in fig. 2-3, baffle 8 sets up along the internal surface axial of gas hood 6, the inboard border of baffle 8 and the surface contact of gas cap 1, baffle 8 separates into a plurality of air current region with the air current passageway 7 between gas hood 6 and the gas cap 1, baffle 8 has avoided the mutual interference between each venthole 2 in the air current passageway 7, has improved the stability of air curtain, makes this shower nozzle can be applied to the welding under the windy environment, and can guarantee the welded quality.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shower nozzle of welder shielding gas, includes gas cap, its characterized in that: the gas cap is pagoda type structure, the right-hand member of gas cap is equipped with the tungsten stick mounting hole, be equipped with the air flue in the left gas cap of tungsten stick mounting hole, be equipped with a plurality of venthole on the inner wall at air flue middle part, be equipped with a plurality of air vent on the gas cap around the tungsten stick mounting hole, the right-hand member of air vent is towards the direction slope setting of tungsten stick mounting hole, the cylinder gas hood is still installed to the outside of gas cap, form the air current passageway between gas hood and the gas cap, the right-hand member of gas cap is located the inside of gas hood, and the venthole is located on the gas cap of air current passageway department.

2. The spray head of a welding gun shielding gas according to claim 1, wherein: the number of the air outlets is at least four, and the air outlets are circumferentially distributed on the air cap.

3. A gun motion shielding gas nozzle as claimed in claim 1 or 2, wherein: a partition plate is further arranged between two adjacent air outlet holes, the partition plate is axially arranged along the inner surface of the air cover, the inner side edge of the partition plate is in contact with the surface of the air cap, and the partition plate divides an air flow channel between the air cover and the air cap into a plurality of air flow areas.

4. The spray head of a welding gun shielding gas according to claim 1, wherein: the number of the air guide holes is at least four, and the air guide holes are circumferentially distributed on the air cap.

5. The spray head of a welding gun shielding gas according to claim 1, wherein: and an internal thread is further arranged on the inner surface of the air cap at the left end of the air passage.

6. The spray head of a welding gun shielding gas according to claim 1, wherein: the air cover and the air cap are made of brass.

7. The spray head of a welding gun shielding gas according to claim 1, wherein: the right end of the air guide hole is positioned on the inner surface of the air passage.