SU1303317A1 - Apparatus for shielded arc welding - Google Patents

Abstract

The invention relates to the field of welding and can be used to protect welds of highly active metals during the welding process of multi-faceted products. The aim of the invention is to improve the quality by improving the protection of welded gava. The protective chamber (K) 12 of the device rotates in the spherical recess 10 of the bracket 8. K 12 has a tide shaped like a spherical recess 10. At the tide, channel 13 is made to communicate with the cavity 9 when turning K. When moving K 12 through the angle of the polyhedron (M) 34 there is a danger of the appearance of a volume that is not filled with gas, in the place of the suspension K 12 and the bracket 8. Due to the implementation of the channel 13, the gas through the cavity 9 enters the heat-affected zone. The side curtain plates 15 are turned around the axes 11 and 16 during the welding process and are pressed against the surface of the M 34 by torsion springs. At the end K 12, an end element is made in the form of a roller 23. Due to this, air is not allowed to leak from the atmosphere along the perimeter M during the welding process. The device is equipped with an automatic displacement mechanism K 12 before the beginning and end of the welding process, 1 s, f, f silt i (L with about 00 with

Description

The invention relates to welding, in particular, to devices for protecting welded joints during welding of multifaceted products from high-active metals, and can be used in welding such products in automated production, for example, power engineering.

The aim of the invention is to improve the quality of welding of multi-faceted products by improving their protection during the welding process, as well as automating the movement of the protective chamber before and after the welding process,

FIG. 1 shows the device, a general view; Fig, 2 - the relative position of the plates of the side-protection blind; FIG. 3 shows the position at the moment when the gas supply from the protective chamber is stopped through a slot made in the chamber; FIG. 4 shows the movement of the protective gas when the burner passes through the angle of a multi-faceted product; in FIG. 2; FIG. in FIG. 6, view B in FIG. 2.

The device for arc welding consists of a base 1 (Fig, 1), part of which is made in the form of guides 2, on which carriage A with torch casing 5 moves on rollers 3. Torch casing 5 (figs 2 and 3) 6 with the help of screws 7 fixed bracket 8 in the form of hog-guta. In bracket 8 there is a cavity 9., transferring into a spherical 10 ,, On the axis 11 of the bracket 8, and with the possibility of turning around it a repetitive notch 10 of the curtain 8, part of the protective chamber 12 with channel 13 (FIG. 3 and 4), perpendicular to the axis of 1D of its symmetry, and the first pair of plates 15 side pggorok. The protective chamber 12 was supplied with additional axes 16 (FIGS. 2 and 5) fixed in the walls 17 of the chamber 12. On the axes 16, the rest of the plates 15 of the side curtains were loosely mounted, forming a cross-section of the chamber 17, Plates 15 torsion shafts 18, which interact at one end with the stops 19, and the other with the side plates 15 niTopoK, Snarukh-And the plates 15 of the side curtains are covered with plates that are connected with screws 21 with the side walls 17 of the chamber 12 .In chamber 12 for a uniform p distribution

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Neither a gas flow, but a gas lens 22 (Figs. 3 and 4).

At the end of the protective chamber 12, an end element is provided in the form of a roller 23 freely attached to the axis 24 for rotation, the width of which is equal to the width of the protective chamber 12 spring-loaded spring 25.

In order to move the carriage 4 by the actuator 26 in the po1 :: ice, the leash 27 is pressed in, and in the carriage 4 the grooves 28 are made for the stroke of the burner 6, the leash 27 with the ball 29 at the end enters the groove 30 tons gi 31, which slides in the tide 32 of one of the guides 2. The ha ha 31 ends with a protrusion, which in the process of operation is associated with a flag 33, rigidly embedded in a protective chamber 12 "

Rollers 35 are provided for copying torch 6 case 34 on case 5 of torch 6,

The device works as follows.

During the welding process, when the product 34 (polyhedron) is rotated, the position of the surfaces to be welded relative to the burner 6 and the protective chamber 12 changes. At the same time, the plates 15 of the side curtains of the protective chamber 12 are turned around the axes 11 and 16 and are pressed against the surfaces of the polyhedron 34 by torsion springs 18 , one end of each of which rests against the stop 19, and the other - into the groove of the plate 15. Simultaneously with the plates 15, the end element 23 is clamped to the surface of the polyhedron 34 through a spring-loaded right-angle 25 curved chamber 12. .Izdeli with surface 34 to the gap is maintained minima1 ny megedu protective chamber 12 and the workpiece 34 in any of its positions. In the starting position and in 5 positions close to the output one (see, figs. 1 and 2) J, the protective chamber 12 provides an even distribution of gas from the burner 6 and a gas lens 22 along the entire length of the protected part of the weld. In the process of welding, when the vertex of the polyhedron 34 is transfused and immediately behind it (Fig. 4), there is a danger of a volume not filled with gas, in the place of suspension of the safety chamber 12 and bracket 8.

In order to avoid such a phenomenon when moving through an angle, many

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The cutting chamber 34 of the sealing chamber 12, together with the channel 13, is bent and the gas through the channel 13 enters the cavity 9 (Fig. 4) and from there into the heat-affected area. Upon further movement of the product 34 and when welding is performed on its face (Figures 1 and 2), the chamber 12 rotates on the axis

11 and channel 13 is automatically overlapped by recess 10 (FIG. 3). After the end of welding, the product 34 stops and the body 5 of the burner 6 is retracted from the product 34. When the drive 26 of the body 5 of the burner 6 moves away from the product 34 to its original position, the movement 27 moves the pull 31 in the tide

32 in the same direction. T ha 31 through a protrusion on it affects: a checkbox 33 and retracts the protective chamber

12 in the same direction.

When welding subsequent 34 products of the same dimensions, the tuning and welding cycle is repeated.

Thus, the device allows to provide high quality welding of multi-faceted products around the perimeter by improving the seam protection by eliminating air leaks from the atmosphere around the perimeter of the multi-faceted product during the welding process, as well as by copying its surface with side-curtain plates and eliminating volumes not filled gas in the vertex range of polyhedra. In addition, the device makes it possible to increase the service life of the protective chamber by eliminating breakages at the time it is supplied to the weld and removed from it.

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 ABOUT

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Claims (2)

1. A device for arc welding in shielding gas containing a base with a burner body fixed on it with an arm for mounting a protective chamber equipped with side curtains in the form of a set of plates and a face element, characterized in that, in order to improve the quality during welding of multi-faceted products along the perimeter by improving the protection of the weld, the camera is installed with the possibility of rotation in the spherical recess of the bracket by means of a tide made on its outer surface with a radial channel and spherical The outer surface, S bracket, has a cavity that communicates when the camera rotates with its radial channel, the end element is made in the form of a roller mounted on the axis rotatably, and has a width equal to the width of the camera, and side curtains are installed with mutual overlap, pairwise loosely mounted on the axis fixed in the walls of the chamber, and spring-loaded relative to the stops mounted on the number of pairs of plates in the walls of the chamber. 2. The device according to claim 1, characterized in that, in order to automate the movement of the protective chamber, before and after the end of the welding process, the burner body is provided with a lead, kinematically connected with a fixed on the base, capable of moving, the free end of which is connected with protective camera. 1 P 79 J4 gi 23 fig.Z J 17 2-5 2 fig L A a noBepHt / mo 5 vidb 23 15 75 15 FIG. 6