Device for welding thin sheets

 

(57) Abstract:

The device can be used for welding in shielding gases transported in the longitudinal direction of the edges of the tube. The electrode (10) is located in the housing (1) of the welding head and secured by means of the electrode collet (5). The electrode collet (5) installed in the Central hole of carterites (3). In a through hole of carterites is tubular clamping core (7) with the slots in the facing to the product end for fixing the electrode. The electrode (10) can be removed upwards from carterites (3) together with a clamping core (7). The core is installed in cartergate with a gap for supplying protective gas. 2 C.p. f-crystals, 1 Il.

The invention relates to a device for welding thin sheets transported under fixed water-cooling welding head, in particular for welding edges, passing in the longitudinal direction of the metal strip being formed into a tube in a protective gas using one or more consumable electrodes placed in the welding head, in which each electrode is fixed by the electrode collet in the body of the burner and the electrode collet is held by a holder CA the thin sheets in the environment of protective gases, in particular for welding moved in the longitudinal direction of the edges of the tube formed from metal strip, contains water-cooled welding torch, TIG electrode, is fixed by means of collets mounted in the Central hole of carterites. The latter are accommodated in the housing of the burner.

The tube to be welded edges is directed along the burner head, and between each electrode and the tube occurs the arc. The curtain of protective gas around the arc and the weld zone. When electrodes are used, the worker process must be interrupted. The burner head is derived from the weld zone, and after separation of the electrode Tsang using the electrode screws electrodes can extend downward from the electrode Tsang and replaced by new electrodes. In particular, if a device is used for welding the edges of a metal tube in combination with a device for the manufacture of tubes made of synthetic material, i.e., at the facility for the manufacture of tubes made of metal with artificial material replacement electrodes should be implemented as soon as possible.

Therefore, in this of the invention is to improve the known device for ispolnenie, typically, tungsten, and secondly, to preclude rotation of the entire welding head when changing electrodes.

According to the invention, this task is solved in that the device for welding thin sheets in the environment of protective gases, in particular for welding moved in the longitudinal direction of the edges of a tube formed from a metal strip containing a water-cooled welding torch, TIG electrode, is fixed by means of collets mounted in the Central hole of carterites placed in the burner housing, according to the invention provided with a tubular clamping core with slots on facing to the welding seam end, in which the fixed electrode, while the core is installed in the hole carterites, which is performed end-to-end.

Using the characteristics according to the invention is possible without rotation of the welding torch after the wound electrode collets pull up electrode.

Directly after removal of used or damaged electrode clamping the core insert a new electrode is regulated at a specified distance from a tube and is introduced together with the clamping rod in the welding gun and electrode is fixed in the collet.

According to the improvement of the invention provides that, at the end of the clamping of the core opposite to the welding seam, is the handle. This handle facilitates the extraction and installation of the clamp core.

along with the above advantages, there is still a significant advantage that can be pulled out another hot electrode and can immediately be inserted the second clamping the core with the electrode.

At that time, as changing and installing electrodes in the known burner can last up to 30 seconds, the time can be reduced to 10 seconds.

Below the invention is explained in more detail based on examples, shown schematically in the drawing.

In the drawing, the welding torch according to the invention, shown in the cut.

The burner consists of a casing 1, which is formed concentrically located inner casing 1a, a protective tube 1b, and protect the howling gap, which is fed through the cooling water hose 2.

Within the body 1 of the burner is the holder 3 collets, to which the current is fed through the inlet 4 and at the lower end of which is fixed electrode collet 5. The holder 3 collets are made along its entire length in the form of a tube and has at its upper end with a pivoting button 6. When you turn the button 6, the holder 3 collets and with him electrode collet 5 is displaced in the longitudinal direction of the body 1 of the burner.

In the cavity of the holder 3 of the tubular collet clamping core 7 with the formation of the annular gap 8, which at its upper end has a handle 9. At the lower end of the clamping core 7 are provided with slots and with clip covers the electrode 10, usually tungsten. In the annular gap 8 through line 11 is supplied protective gas, for example argon, which opens at the lower end of the welding torch, between the electrode 10 and the nozzle 12 for the shielding gas, and creates a curtain of protective gas over the weld seam.

The annular gap 8 is sealed at the upper end of the two seal rings 13 and 14 to prevent the outputs protective gas up.

During operation of the burner electrode collet 5 closely adjacent to the bevel at the lower end nutriarchives turning the button 6. The electrode 10 can move upward together with the clamping core 7, and then immediately into the holder 3 collets set a new electrode 10, which is having cuts the end of the second clamping core 7, together with the second clamping core. By turning the button 6, the electrode 10 is clamped in the electrode collet. This process of changing the electrode can be effected without rotation of the welding torch during the hot electrodes, i.e., directly after switching on the welding torch.

1. Device for welding thin sheets in the environment of protective gases, in particular for welding stir in the longitudinal direction of the edges of a tube formed from a metal strip containing a water-cooled welding torch, TIG electrode, is fixed by means of collets mounted in the Central hole of carterites placed in the burner housing, characterized in that the device has a tubular clamping core with slots on converted to the end product, in which the fixed electrode, while the core is installed in the hole carterites, which is performed end-to-end.

2. The device under item 1, characterized in that the clamping core installed in changed esino o-ring.

3. The device under item 1 or 2, characterized in that at the end of the clamping of the core opposite to the welding seam, is the handle.

 

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