CN209754429U - protective gas conveying device for online welding of steel pipe production line - Google Patents

Abstract

The utility model discloses a protective gas delivery device for on-line welding of a steel pipe production line, which comprises a first positioning block and a second positioning block. Groove surface for the passage of steel pipes, the first positioning block and the upper part of the second positioning block form a symmetrical protective gas delivery unit, the protective gas delivery unit includes a gas outlet and a gas inlet, and connects the gas outlet and gas inlet The L-shaped protective gas channel is formed inside the upper part of the first positioning block and the second positioning block, and the gas inlet is connected to the protective gas supply system. The utility model can realize that the existing welding machine is equipped with corresponding shielding gas, so as to provide corresponding protection for welding, thereby improving the welding quality of the welded steel pipe.

Description

A protective gas conveying device for online welding of steel pipe production line

technical field

The utility model relates to the technical field of steel pipe production and processing, in particular to a protective gas conveying device for on-line welding of a steel pipe production line.

Background technique

In the production of small-diameter (2-3cm) automobile exhaust pipes, during the welding process after forming, the welding machine configured does not use protective gas to weld the pipes, which affects the welding quality of the pipes.

Utility model content

The purpose of this utility model is to aim at the technical defects existing in the prior art, and to provide a protective gas delivery device for on-line welding of a steel pipe production line for small-diameter automobile exhaust pipes, which is separately installed on the production line and welded with a welding machine , so that the welding is carried out in a protective atmosphere to improve the welding quality.

The technical scheme adopted for realizing the purpose of this utility model is:

A protective gas conveying device for on-line welding of a steel pipe production line, comprising a first positioning block and a second positioning block, the first positioning block and the second positioning block are arranged oppositely, and the opposite surfaces are respectively provided with arc-shaped groove surfaces, so that The steel pipe passes through, and the upper part of the first positioning block and the second positioning block forms a symmetrical protective gas delivery unit. A gas channel is formed inside the upper part of the first positioning block and the second positioning block, and the gas inlet is connected to a protective gas supply system.

The air outlet and the air inlet are respectively equipped with a nozzle and an air inlet pipe.

The bottoms of the first positioning block and the second positioning block are fixed on the connecting plate.

Compared with the prior art, the beneficial effects of the utility model are:

The shielding gas conveying device for online welding of the steel pipe production line of the utility model forms a symmetrical shielding gas conveying unit through the upper part of the first positioning block and the second positioning block. The shielding gas conveying unit includes an air outlet and an air inlet, connected to the The L-shaped shielding gas channel of the gas outlet and the gas inlet is formed inside the upper part of the first positioning block and the second positioning block, and the gas inlet is connected to the shielding gas supply system, which can be realized as an existing welding machine. Shielding gas, so as to provide corresponding protection for welding, thereby improving the welding quality of welded steel pipes.

Description of drawings

Figure 1 is a top view schematic diagram of a shielding gas delivery device for online welding of a steel pipe production line;

Figure 2 is a schematic front view of a protective gas delivery device for online welding of a steel pipe production line with steel pipes;

Figure 3 is a schematic front view of a protective gas delivery device for online welding of a steel pipe production line without steel pipes;

Fig. 4 shows a system schematic diagram of an existing gas supply system used in a shielding gas delivery device.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, the utility model is a protective gas conveying device for on-line welding of a steel pipe production line, which is arranged between steel pipe conveying lines 1 and includes a first positioning block 2 and a second positioning block 3, the first positioning block and the second positioning block 3 The second positioning block is arranged oppositely, and there are arc-shaped grooves on the opposite surfaces to form a space 9 for the steel pipe 100 to pass through. The first positioning block and the upper part of the second positioning block form a symmetrical shielding gas delivery unit. The protective gas delivery unit includes a gas outlet and a gas inlet. The L-shaped protective gas channel 7 connecting the gas outlet and the gas inlet is formed inside the upper part of the first positioning block and the second positioning block. The gas inlet Connect the shielding gas supply system.

Wherein, the air outlet and the air inlet are respectively equipped with a nozzle 5 and an air inlet pipe 4 . The nozzle 5 and the air inlet pipe 4 are threaded and sealed with the air outlet and the air inlet.

Wherein, the bottoms of the first positioning block and the second positioning block are fixed on the connecting plate 8 .

During welding, the welding gun 6 is above the two first positioning blocks and the second positioning block, and the protective gas is sprayed out by two nozzles to form a protected area, as shown in Figure 1, to realize the welding of steel pipes under a protective atmosphere. The straight weld seam on the steel pipe 100 sent on the conveying line 1 is carried out mobile welding, and is sent out again by the steel pipe conveying line of the back. Among them, the welding gun is not moving, and the welding under the protective atmosphere is realized during the moving and conveying process of the conveying line.

It should be noted that, in the present utility model, the described protective gas supply system adopts the prior art structure, as shown in Figure 4, the prior art protective gas supply system includes a gas cylinder 10 equipped with high-pressure carbon dioxide, and The gas-connected dryer 11 used to remove moisture from carbon dioxide, the preheater 13 that heats the carbon dioxide that removes moisture to the required temperature, and the gas flow meter 13 dry the preheated gas again to further remove moisture The second dryer 14, and the electromagnetic valve 15 used to control the gas output or not, the gas outlet of the electromagnetic valve can be connected with the inlet pipe through the pipeline, which is the carbon dioxide protection technology in the existing shielded welding technology. Gas supply system, its structure will not be described in detail.

Compared with the prior art, the beneficial effects of the utility model are:

The shielding gas conveying device for online welding of the steel pipe production line of the utility model forms a symmetrical shielding gas conveying unit through the upper part of the first positioning block and the second positioning block. The shielding gas conveying unit includes an air outlet and an air inlet, connected to the The L-shaped shielding gas channel of the gas outlet and the gas inlet is formed inside the upper part of the first positioning block and the second positioning block, and the gas inlet is connected to the shielding gas supply system, which can be realized as an existing welding machine. Shielding gas, so as to provide corresponding protection for welding, thereby improving the welding quality of welded steel pipes.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (3)

1. the utility model provides a steel pipe production line is protective gas conveyor for on-line welding, its characterized in that, includes first locating piece and second locating piece, first locating piece and second locating piece set up relatively to there is the arc recess face on the opposite face respectively, so that the steel pipe passes through, first locating piece forms symmetrical protective gas conveying unit with the upper portion of second locating piece, protective gas conveying unit includes gas outlet and income gas port, connects the L shape protective gas passageway of gas outlet and income gas port forms inside the upper portion of first locating piece and second locating piece, it supplies the system to go into the gas port connection protective gas.

2. The shielding gas conveying device for the on-line welding of the steel pipe production line as recited in claim 1, wherein the gas outlet and the gas inlet are respectively provided with a nozzle and a gas inlet pipe.

3. the shielding gas conveying apparatus for the on-line welding in the steel pipe production line as set forth in claim 1, wherein bottoms of the first positioning block and the second positioning block are fixed to the connecting plate.