Welding ball net rack node small-included-angle welding line welding device

Abstract

The utility model discloses a welding ball net rack node small-included-angle welding line welding device, and relates to the technical field of net rack welding. Comprising a gun body, one end of the gun body is provided with a gas spraying assembly for spraying argon to a weld joint, the end, extending into the gun body, of the gas spraying assembly is communicated with an annular pipe, the annular pipe is fixedly connected and communicated with a gas supply guide pipe, a wire feeding assembly for providing a tungsten electrode is arranged in the gun body, and the welding end of the tungsten electrode and the gas spraying assembly are arranged on the same side of the gun body. The outer wall of the gun body is fixedly connected with a handle. The end, away from the annular pipe, of the air supply guide pipe penetrates through the handle and extends out of the handle. The air injection assembly comprises symmetrically-arranged air outlet parts. According to the welding device, the tungsten electrode can effectively abut against a welding seam at the position of a small included angle, meanwhile, argon can be sprayed to a welding area of the tungsten electrode through the two gas outlet parts, stable argon spraying is effectively provided for the welding position, and the small included angle formed between a rod piece and a welding ball can be effectively welded through the tungsten electrode.

Description

Technical Field

[0001] The utility model relates to the technical field of grid welding, in particular to a welding device for welding small-angle welds at nodes of a welding ball grid. Background Art

[0002] The grid is a spatial structure formed by connecting multiple rods with welding balls in a certain grid form. It has the advantages of spatial force, light weight, high rigidity and good earthquake resistance. It is usually used for roofs of buildings such as gymnasiums, theaters, exhibition halls, waiting rooms, stadium stand awnings, hangars, and two-way large column grid structure workshops. Usually, one welding ball welds two rods. However, for grids with complex structures, multiple rods will be welded on the welding ball. When there are more rods to be welded on the welding ball, the angle between the two adjacent rods will become smaller, resulting in a smaller angle between some rods and the welding ball. At the same time, in order to ensure the welding quality, argon arc welding is usually used for welding. However, since argon arc welding needs to spray argon during welding, a nozzle needs to be installed and the tungsten electrode needs to be placed in the nozzle so that argon gas can be sprayed to the welding point through the nozzle. After the nozzle is installed, the end diameter of the welding gun will be larger, and it is impossible to effectively weld the small angle formed between the rod and the welding ball. Therefore, there is an urgent need for a welding device for small-angle welds at the welding ball grid node, which can not only effectively provide stable argon gas spray to the welding point, but also enable the tungsten electrode to effectively weld the small angle formed between the rod and the welding ball. Utility Model Content

[0003] The utility model aims to provide a welding device for welding small angle welds of a welding ball grid node, so as to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme: The utility model provides a welding device for welding small-angle welds at the nodes of a ball grid, comprising a gun body, one end of the gun body is provided with a jet assembly for spraying argon gas on the weld, one end of the jet assembly extending into the gun body is connected to an annular tube, the annular tube is fixedly connected and connected to an air supply duct, a wire feeding assembly for providing a tungsten electrode is provided in the gun body, the welding end of the tungsten electrode and the jet assembly are arranged on the same side of the gun body, a handle is fixedly connected to the outer wall of the gun body, and the end of the air supply duct away from the annular tube passes through the handle and extends out of the handle; the jet assembly includes a symmetrically arranged air outlet.

[0005] Preferably, the air outlet portion comprises an air outlet conduit, one end of which extends into the gun body and communicates with the annular tube, and one end of which extends out of the gun body is fixedly connected to and communicates with an arc block.

[0006] Preferably, a tapered opening is provided in the arc-shaped block.

[0007] Preferably, the air inlet end of the tapered opening is opened in a circular shape, and the air inlet end of the tapered opening is fixedly connected to and communicated with the air outlet duct.

[0008] Preferably, the air outlet end of the tapered port is opened in a long arc shape.

[0009] Preferably, the conical opening is opened at an angle, and the gas outlet end of the conical opening faces the welding end of the tungsten electrode.

[0010] Preferably, the portion of the air outlet conduit extending out of the gun body is a freely bendable shaped tube.

[0011] Preferably, the wire feeding assembly includes a wire feeding guide tube, which is fixedly connected and communicated with one end of the gun body facing away from the air outlet guide tube, and one end of the wire feeding guide tube extending into the gun body is threadedly connected with a conductive tube, and the tungsten electrode sequentially passes through the wire feeding guide tube and the conductive tube extends out of the gun body.

[0012] Preferably, one end of the conductive tube extending into the gun body passes through the annular tube.

[0013] Preferably, the inner diameter of the annular tube is larger than the outer diameter of the conductive tube.

[0014] The utility model discloses the following technical effects:

[0015] The utility model effectively reduces the area occupied by the existing nozzle through the symmetrically arranged air outlet parts, and can make the tungsten electrode effectively abut against the weld at a small angle and perform welding through the tungsten electrode. At the same time, argon gas can be sprayed to the welding area of ​​the tungsten electrode through the two air outlet parts, so that the utility model can not only effectively provide stable argon gas injection to the welding point, but also make the tungsten electrode effectively weld the small angle formed between the rod and the welding ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the front view structure of the arc block of the utility model;

[0020] Figure 4 This is a rear view structural diagram of the arc block of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the arc-shaped block of the utility model;

[0022] Among them, 1. gun body; 2. wire feeding guide tube; 3. tungsten electrode; 4. conductive tube; 5. handle; 6. air supply guide tube; 7. ring tube; 8. air outlet guide tube; 9. arc block; 10. conical mouth; 11. air inlet end; 12. air outlet end; 13. switch. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figure 1-Figure 5 The utility model discloses a welding device for welding a small-angle weld at a node of a welding ball grid, comprising a gun body 1, one end of the gun body 1 is provided with a jet assembly for spraying argon gas on the weld, one end of the jet assembly extending into the gun body 1 is connected with an annular tube 7, the annular tube 7 is fixedly connected and connected with an air supply duct 6, a wire feeding assembly for providing a tungsten electrode 3 is provided in the gun body 1, the welding end of the tungsten electrode 3 and the jet assembly are arranged on the same side of the gun body 1, a handle 5 is fixedly connected to the outer wall of the gun body 1, and one end of the air supply duct 6 away from the annular tube 7 passes through the handle 5 and extends out of the handle 5; the jet assembly includes a symmetrically arranged gas outlet.

[0026] The utility model effectively reduces the area occupied by the existing nozzle through the symmetrically arranged gas outlet parts, and can make the tungsten electrode 3 effectively abut against the weld at a small angle, and weld through the tungsten electrode 3. At the same time, argon gas can be sprayed to the welding area of ​​the tungsten electrode 3 through the two gas outlet parts, so that the utility model can not only effectively provide stable argon gas injection to the welding point, but also make the tungsten electrode 3 effectively weld the small angle formed between the rod and the welding ball.

[0027] In a further optimized solution, the gas outlet portion includes a gas outlet conduit 8, one end of which extends into the gun body 1 and is connected to the annular tube 7, and one end of the gas outlet conduit 8 extending outside the gun body 1 is fixedly connected and connected to an arc block 9. Argon gas is divided into two gas outlet conduits 8 through the annular tube 7, and the argon gas is ejected through the arc block 9.

[0028] In a further optimized solution, a conical opening 10 is provided in the arc block 9. The conical opening 10 enables argon gas to be effectively sprayed to the welding position through the conical opening.

[0029] In a further optimized solution, the gas inlet end 11 of the conical port 10 is opened in a circular shape, and the gas inlet end 11 of the conical port 10 is fixedly connected and communicated with the gas outlet conduit 8. The gas inlet end 11 can be effectively communicated with the gas outlet conduit 8, so that the argon gas can enter the conical port 10 through the gas outlet conduit 8.

[0030] In a further optimized solution, the gas outlet end 12 of the tapered opening 10 is opened in a long arc shape so that the argon gas entering the tapered opening 10 can be blown toward the welding position in a fan shape through the gas outlet end 12 .

[0031] In a further optimized solution, the conical opening 10 is inclined, and the gas outlet 12 of the conical opening 10 faces the welding end of the tungsten electrode 3. With the gas outlet 12 facing the welding end of the tungsten electrode 3, argon gas can be effectively sprayed at the welding point through the gas outlet 12.

[0032] According to a further optimized solution, the portion of the air outlet conduit 8 extending out of the gun body 1 is a freely bendable shaped tube.

[0033] In order to prevent the two arc blocks 9 from being unable to enter the small angle and to facilitate adjustment of the position of the arc block 9 so that the gas outlet end 12 can face the welding end of the tungsten electrode 3, a free-bending molding tube is used for the portion of the gas outlet duct 8 extending outside the gun body 1. Through the arbitrary bending and shaping characteristics of the free-bending molding tube, the two arc blocks 9 are located on both sides of the small angle, and the gas outlet end 12 can face the welding end of the tungsten electrode 3, so that argon gas can be stably sprayed toward the welding point.

[0034] Further optimizing the scheme, the wire feeding assembly includes a wire feeding guide tube 2, which is fixedly connected and communicated with the end of the gun body 1 away from the gas outlet guide tube 8, and the end of the wire feeding guide tube 2 extending into the gun body 1 is threadedly connected with a conductive tube 4, and the tungsten electrode 3 sequentially passes through the wire feeding guide tube 2 and the conductive tube 4 and extends out of the gun body 1. The wire feeding guide tube 2 and the conductive tube 4 are components of the argon welding gun in the prior art, and the tungsten electrode 3 can be controlled to perform welding operations through the switch 13 on the handle 5.

[0035] In a further optimized solution, one end of the conductive tube 4 extending into the gun body 1 passes through the annular tube 7. In order to enable the tungsten electrode 3 to effectively perform the wire feeding action, the conductive tube 4 is extended into the annular tube 7 so that the tungsten electrode 3 can stably move from the wire feeding guide tube 2 to the conductive tube 4.

[0036] In a further optimized solution, the inner diameter of the annular tube 7 is larger than the outer diameter of the conductive tube 4. Since the inner diameter of the annular tube 7 is larger than the outer diameter of the conductive tube 4, the installation and removal of the conductive tube 4 are facilitated.

[0037] Working process: When welding, the direction of the gas outlet end 12 is adjusted by bending the part of the gas outlet duct 8 extending out of the gun body 1, so that the gas outlet end 12 faces the welding end of the tungsten electrode 3. When the welding end of the tungsten electrode 3 can effectively abut against the weld, and the two arc blocks 9 do not affect the welding of the tungsten electrode 3 along the weld, the welding operation can be carried out; when the two arc blocks 9 affect the welding of the tungsten electrode 3 along the weld, the welding work can be carried out by adjusting the bending of the part of the gas outlet duct 8 extending out of the gun body 1, and making the two arc blocks 9 around the rod on both sides of the small angle, and at the same time, the gas outlet end 12 must face the welding end of the tungsten electrode 3.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and 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 therefore should not be understood as a limitation on the present invention.

[0039] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A welding device for welding small angle welds at the nodes of a welding ball grid, characterized in that: The invention comprises a gun body (1), one end of which is provided with a jet assembly for spraying argon gas on a weld, the end of which extends into the gun body (1) is connected to an annular tube (7), the annular tube (7) is fixedly connected to and connected to an air supply conduit (6), a wire supply assembly for providing a tungsten electrode (3) is provided in the gun body (1), the welding end of the tungsten electrode (3) and the jet assembly are arranged on the same side of the gun body (1), a handle (5) is fixedly connected to the outer wall of the gun body (1), and the end of the air supply conduit (6) away from the annular tube (7) passes through the handle (5) and extends out of the handle (5); The air injection assembly includes air outlets that are symmetrically arranged.

2. The welding device for small angle welds at welded ball grid nodes according to claim 1 is characterized in that: The air outlet portion comprises an air outlet duct (8), one end of which extends into the gun body (1) and is connected to the annular tube (7), and one end of which extends outside the gun body (1) is fixedly connected to and connected to an arc block (9).

3. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 2 is characterized in that: A tapered opening (10) is provided in the arc-shaped block (9).

4. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 3 is characterized in that: The air inlet end (11) of the conical opening (10) is opened in a circular shape, and the air inlet end (11) of the conical opening (10) is fixedly connected to and communicates with the air outlet duct (8).

5. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 3 is characterized in that: The air outlet end (12) of the tapered opening (10) is opened in the shape of a long circular arc.

6. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 3 is characterized in that: The conical opening (10) is opened at an angle, and the gas outlet end (12) of the conical opening (10) faces the welding end of the tungsten electrode (3).

7. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 2 is characterized in that: The portion of the air outlet conduit (8) extending outside the gun body (1) is a freely bendable shaped tube.

8. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 2 is characterized in that: The wire feeding assembly comprises a wire feeding guide tube (2), the wire feeding guide tube (2) being fixedly connected to and in communication with an end of the gun body (1) facing away from the air outlet guide tube (8), the end of the wire feeding guide tube (2) extending into the gun body (1) being threadedly connected to a conductive tube (4), the tungsten electrode (3) sequentially passing through the wire feeding guide tube (2), and the conductive tube (4) extending out of the gun body (1).

9. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 8 is characterized in that: One end of the conductive tube (4) extending into the gun body (1) passes through the annular tube (7).

10. The welding device for welding small angle welds at the nodes of the welded ball grid according to claim 8, characterized in that: The inner diameter of the annular tube (7) is greater than the outer diameter of the conductive tube (4).

Images