A new type of gas shielded welding protection nozzle

Abstract

The utility model discloses a novel gas shielded welding protective nozzle, which is provided with a through hole for accommodating a conductive nozzle, the left end of the through hole is provided with an internal thread, and a plurality of spiral gas guide grooves are provided on the inner wall of the middle part of the through hole; the right end of the through hole is provided with a gas collecting groove, and a convex structure is provided in the gas collecting groove. The utility model realizes that the ejected airflow is spiral-shaped by arranging a spiral gas guide groove in the through hole of the protective nozzle body, and then passes through the gas collecting groove at the bottom of the protective nozzle to increase pressure and speed and then spray downward, so that the welding point can be separated from the air with a small amount of protective gas, which greatly saves protective gas and reduces welding slag splashing. A shielding gas exhaust hole is also provided at the bottom of the protective nozzle to reduce slag sticking to the bottom of the protective nozzle.

Description

Technical Field

[0001] The utility model relates to the field of gas shielded welding equipment, in particular to a gas shielded welding protection nozzle. Background Art

[0002] Gas shielded welding is widely used in modern industry due to its welding efficiency, welding quality and reliability. Oxygen and nitrogen in the atmosphere will react with the molten metal, causing oxidation and nitridation of the weld, affecting the quality and mechanical properties of the weld. By using shielding gas, the purity and strength of the weld can be ensured. The gas shielded welding nozzle is a key component in the gas shielded welding equipment. Its main function is to guide the reasonable distribution of the shielding gas, thereby effectively isolating the air and reducing the slag splash.

[0003] The internal channel design of the shielding nozzle is crucial to the flow of the shielding gas, which determines the way the shielding gas covers the welding area. Reasonable channel design can ensure that the gas flows to the weld at an appropriate speed and pressure, forming a uniform and stable protective environment. The bottom of the traditional gas shielded welding nozzle is prone to slag sticking, and the shielding gas sprayed out is in a columnar shape and sprayed directly around the weld. Due to the high temperature of the weld, the shielding gas is quickly dissipated due to the high temperature. A large amount of shielding gas is required to isolate the weld from the surrounding air, and the spraying of a large amount of gas will aggravate the slag splashing. Utility Model Content

[0004] The utility model provides a novel gas shielded welding protection nozzle, the purpose of which is to use a small amount of protection gas to separate the welding point from the air and reduce the slag sticking to the bottom of the protection nozzle.

[0005] The technical solution of this utility model is as follows:

[0006] A novel gas shielded welding protective nozzle comprises a protective nozzle body, in which a through hole for accommodating a conductive nozzle is provided, an internal thread is provided at the left end of the through hole, and a plurality of spiral gas guide grooves are provided on the middle inner wall of the through hole; a gas collecting groove is provided at the right end of the through hole, and a protruding structure is provided in the gas collecting groove.

[0007] As a further improvement, the inner wall at the right end of the through hole is further provided with circumferentially distributed shielding gas exhaust holes, and the outer ends of the shielding gas exhaust holes are located on the right end surface of the protective nozzle body.

[0008] As a further improvement, a hexagonal clamping portion is provided at the left end of the protective nozzle body.

[0009] Compared with the prior art, the utility model has the following positive effects:

[0010] (1) By setting a spiral gas guide groove on the inner wall of the right end of the through hole of the shield nozzle body, the ejected airflow is spiral, and then it is pressurized and accelerated through the gas collecting groove at the bottom of the shield nozzle and ejected downward, so that the welding point can be separated from the air with a small amount of shielding gas, which greatly saves shielding gas and reduces welding slag splashing;

[0011] (2) There is also a shielding gas exhaust hole at the bottom of the protective nozzle, which can form a shielding gas barrier to reduce the slag sticking to the bottom of the protective nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the protective mouth of the utility model;

[0013] Figure 2 This is a cross-sectional view of the protective nozzle of the utility model.

[0014] In the figure, 1. internal thread; 2. hexagonal clamping part; 3. spiral air guide groove; 4. air collecting groove; 4-1. protruding structure; 4-2. groove; 5. shielding gas exhaust hole. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0016] like Figure 1 and Figure 2 As shown, a new type of gas shielded welding protective nozzle comprises a protective nozzle body, which is provided with a through hole for accommodating a conductive nozzle, and four spiral gas guide grooves 3 are provided on the inner wall of the middle part of the through hole, and each groove spirally rotates 360°; a gas collecting groove 4 is provided at the right end of the through hole for pressurizing the gas and increasing the gas injection speed, and the gas collecting groove 4 includes twelve groups of protruding structures 4-1, and grooves 4-2 are formed between adjacent protruding structures 4-1; six shielding gas exhaust holes 5 distributed in a circle are also opened on the inner wall of the right end of the through hole, and the outer ends of the shielding gas exhaust holes 5 are located on the right end face of the protective nozzle body, and the aperture thereof is 0.5mm; an internal thread 1 is also provided at the left end of the through hole, and the protective nozzle body is connected to the welding gun body (diverter) through the internal thread 1; a hexagonal clamping portion 2 is also provided on the outer surface of the left end of the protective nozzle body for easy disassembly and assembly.

[0017] When in use, the utility model is connected to the welding gun body (diverter). After the shielding gas is ejected through the welding gun body (diverter), when passing through the middle part of the through hole of the shielding nozzle body, the shielding gas cannot be ejected to the left end because the utility model and the welding gun body (diverter) are connected together through the internal thread 1 at the left end of the through hole, and the shielding nozzle body through hole also contains a conductive nozzle, so the shielding gas can only be ejected to the right through the spiral gas guide groove 3. Under the guidance of the spiral gas guide groove 3, the shielding gas spirally moves downward around the inner wall of the through hole of the shielding nozzle body like a tornado, and gathers in the gas collecting groove 4. After being squeezed, it is ejected downward at an accelerated speed. The ejected spiral shielding gas is evenly distributed around the welding point like a cylinder. Only a small amount of shielding gas is needed to fully cover the welding point, thereby isolating the welding point from the surrounding air, and the oxygen and nitrogen in the air will not chemically react with the high-temperature melted metal of the welding point, thereby improving the welding quality. The spiral shielding gas design not only increases the shielding gas coverage, but also strengthens the protection effect on the molten pool, thus not only greatly saving shielding gas, but also reducing welding slag splashing. A small amount of shielding gas is ejected from the shielding gas exhaust hole 5, which plays a role in shielding air and reducing welding slag splashing to the right end of the shielding nozzle body, further reducing slag sticking.

[0018] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A novel gas shielded welding protective nozzle, comprising a protective nozzle body, a through hole for accommodating a conductive nozzle is provided in the protective nozzle body, and an internal thread (1) is provided at the left end of the through hole, characterized in that: A plurality of spiral gas-guiding grooves (3) are provided on the inner wall of the middle portion of the through hole; a gas-collecting groove (4) is provided at the right end of the through hole, and a protruding structure (4-1) is provided in the gas-collecting groove (4).

2. The novel gas shielded welding nozzle as claimed in claim 1 is characterized in that: The inner wall at the right end of the through hole is also provided with shielding gas exhaust holes (5) distributed in a circumference, and the outer ends of the shielding gas exhaust holes (5) are located on the right end surface of the protective nozzle body.

3. The novel gas shielded welding protection nozzle as claimed in claim 1 is characterized in that: A hexagonal clamping portion (2) is provided at the left end of the protective nozzle body.

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