CN201064855Y - Torch equipped with front preheating device - Google Patents

Abstract

The utility model discloses a welding torch equipped with a preheating device, which comprises a trolley guide rail, a trolley that can move back and forth along the guide rail, a bracket vertically fixed on the trolley, and a cantilever connected to the bracket; the welding torch and the preheating device Connected to the cantilever, the welding torch is separated by a certain distance after the preheating device. The beneficial technical effect of the utility model is: it can stably and effectively control the pre-welding preheating temperature and heating range of the weldment, reduce welding deformation, improve welding quality, reduce labor intensity of welding construction, improve welding efficiency and reduce energy consumption.

Description

A welding torch equipped with a preheating device

technical field

The utility model relates to a welding torch, in particular to a welding torch provided with a preheating device.

Background technique

In the melting welding process of large components, in order to adjust the welding temperature of the parts to be welded, reduce the welding internal stress, reduce the incidence of welding cracks, and obtain a weld structure that meets the requirements, at present, preheating such as oxyacetylene flame is usually used before welding. The device manually preheats the parts to be welded. From the process point of view, preheating and welding are two processes divided into two. Due to the low stability of manual operation, the preheating time, preheating temperature, area of the heated part, and the time interval between preheating and welding It is difficult to control stably, resulting in low stability of the preheating process and the quality of preheating cannot be guaranteed.

Contents of the invention

The purpose of the utility model is to provide a welding torch equipped with a preheating device which can stably control the preheating temperature and improve the welding quality. The technical solution is: a welding torch equipped with a preheating device, which is characterized in that it includes a trolley guide rail, a trolley that can move back and forth along the guide rail, a bracket vertically fixed on the trolley and a cantilever connected to the bracket; The torch and preheating device are connected to the cantilever, and the welding torch is separated by a certain distance behind the preheating device.

The cantilever can move up and down in parallel along the bracket, and the cantilever guide rail is set on the cantilever. The welding torch and preheating device are connected with the cantilever through the cantilever guide rail, and can move along the cantilever guide rail. The welding torch, preheating device and cantilever guide rail can be installed on the upper, lower and both sides of the cantilever.

The beneficial technical effect of the utility model is: it can stably and effectively control the pre-welding preheating temperature and heating range of the weldment, reduce welding deformation, improve welding quality, reduce labor intensity of welding construction, improve welding efficiency and reduce energy consumption.

Description of drawings

Accompanying drawing is the structural diagram of the utility model.

In the accompanying drawings: trolley guide rail 1, trolley 2, support 3, cantilever 4, welding torch 5, preheating device 6, parts to be welded 7, welding seam 8, preheating zone 9, cantilever guide rail 10.

Detailed ways

Referring to the accompanying drawings, a welding torch with a front preheating device includes a trolley guide rail 1, a trolley 2 that can move back and forth along the guide rail, a bracket 3 vertically fixed on the trolley and a cantilever 4 connected to the bracket 3; The torch 5 and the preheating device 6 are connected to the cantilever 4, and the welding torch 5 is behind the preheating device 6 and separated by a certain distance.

The cantilever 4 can move up and down in parallel along the support 3 to adjust the distance between the cantilever 4 and the workpiece 7 to be welded. The cantilever 4 is provided with a cantilever guide rail 10, and the welding torch 5 and the preheating device 6 are connected to the cantilever 4 through the cantilever guide rail 10. And it can move along the cantilever guide rail 10, so that the relative position between the welding torch 5 and the preheating device 6 can be adjusted.

The welding torch 5, the preheating device 6 and the cantilever guide rail 10 can be installed on the upper, lower and both sides of the cantilever 4, so that the positions to be welded in various directions can be welded conveniently.

During welding, the preheating device 6 is first ignited, and the trolley 2 moves along the trolley guide rail 1 at a preset speed, thereby driving the preheating device 6 and the welding torch 5 to move to the part to be welded, and the preheating device 6 contacts the part to be welded and Heating is carried out to form a preheated zone 9 , and when the welding torch 5 reaches the preheated part to be welded along with the movement of the trolley 2 , arc welding is performed to form a weld seam 8 . When the preheating device 6 moves over the end of the weldment along with the trolley 2, the preheating stops, and when the welding torch 5 moves over the end of the weldment along with the trolley 2, the arc is extinguished, and the welding process is completed.

The utility model can control the distance between the welding torch 5 and the preheating device 6, the moving speed of the trolley 2, the air flow of the preheating device 6, the air pressure, the content of the mixed gas, the distance between the preheating device 6 and the part to be welded, etc. Parameters to adjust and stably control the preheating temperature, thereby stably and effectively controlling the pre-welding preheating temperature and heating range of the weldment, reducing welding deformation, improving welding quality, reducing labor intensity of welding construction, improving welding efficiency, and reducing energy consume.

Claims (3)

1. welding torch that is provided with the front preheating process device is characterized in that: it comprise vehicle guide (1), the dolly (2) that can move back and forth along guide rail, vertical fixing on dolly support (3) and be connected in the cantilever (4) of support (3); Welding torch (5) and preheating device (6) are connected on the cantilever (4), and welding torch (5) in preheating device (6) back also at intervals.

2. the welding torch that is provided with the front preheating process device according to claim 1, it is characterized in that: cantilever (4) can move along support (3) is parallel up and down, cantilever (4) is provided with cantilevered rail (10), welding torch (5) and preheating device (6) all are connected with cantilever (4) by cantilevered rail (10), and can move along cantilevered rail (10).

3. the welding torch that is provided with the front preheating process device according to claim 2 is characterized in that: welding torch (5), preheating device (6) and cantilevered rail (10) can be installed on upper and lower and two side positions of cantilever (4).

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