IT202000023707A1 - WELDING DEVICE - Google Patents

Description

Title: WELDING DEVICE

DESCRIPTION

The present invention relates to a welding device.

How ? known, the resistance welding ? a technique that provides for welding thanks to a localized heating obtained by electric resistance.

In this context, devices of the type of pliers are therefore widespread in which a main body supports a pair of mutually movable electrodes, which, as in a pliers or a vice, can be brought close to each other until they are tightened together, with adequate force the materials to be welded.

configurations. For example, both electrodes may be supported by respective arms rotatably supported by the body or one electrode may be supported by an arm which can be moved with respect to the body, in order to be able to approach or move away from the other electrode. Another object of the invention is to create a welding device that ensures high reliability? of operation.

Another purpose of the invention? that of proposing a welding device which adopts an alternative technical and structural architecture to those of devices of the known type.

lateral;

figure 2 illustrates the device of figure 1, in a lateral rear isometric view;

figure 3 is a side elevation view of a sub-assembly of the device of figure 1 , comprising the first arm and the first electrode; figure 4 ? a section of figure 3, taken along the axis IV-IV;

Figure 5 illustrates the subassembly of Figure 3, in an axonometric and exploded view;

figure 6 illustrates the subassembly of figure 3, in a lateral rear isometric view;

performed along the X-X axis;

figure 11 illustrates the subgroup of figure 9, in isometric and exploded view;

figure 12 illustrates the subassembly of figure 9, in a lateral rear isometric view.

figure 13 is a side elevation view of a second sub-assembly of the device of figure 7 , comprising a second arm and the second electrode;

Device 1 comprises a unit? main 2, return 6 can have diameters (and in general dimensions) that are the same or even different, remaining in any case within the scope of protection claimed here.

The first electrode 4 ? movable with respect to a second electrode 7 in turn supported also indirectly by the unit? 2; the type of reciprocal movement and the modalities? with which it is made in practice can be any, without with what? outside the scope of protection claimed here. In particular, and as subjected pieces previously placed among other pieces, products or semi-finished products.

According to the invention, the first arm 3 comprises a shaped plate 8, which defines two opposite major faces 8a and which ? bound to the first electrode 4 and to the unit? 2 in correspondence with respective opposite edges of its side edge 8b, precisely positioned between the major faces 8a.

It is specified as the major faces 8a of the niche plate 9.

Is the possibility foreseen? that only the first electrode 4 is supported by a first arm 3, while the second electrode 7 ? directly supported, in a rigid way, by the unit? 2: in this configuration, which corresponds to the solution of It is underlined how in the present discussion it was chosen to assign the same reference number to elements belonging to different arms 3, 11 (such as the plate 8, the delivery pipes 5 and the return 6): there? ? precisely due to the embodiment both tubes 5, 6 associated with the same arm 3, 11 are arranged on the same side of the latter (in one or more niches 9 which open along the same larger face 8a). Not ? excluded the possibility that the pipes 5, 6 are placed along the same side but in different niches 9 (side by side).

In the preferred embodiment (and as in the solutions of the attached figures), the delivery pipe 5 is housed in at least a first niche 9 made along a first larger face 8a of the plate 8, while the respective return pipe 6? housed in at least a second niche 9 formed along a second larger face 8a (or even only for a part thereof). Such a possibility? ? the one adopted for the arms 3, 11 of the solution of figures 7-16.

Usefully, in a different constructive solution, in each of this plurality? of niches 9 (respective adjacent edges of the tube 5, 6 are housed in corresponding niches 9) and ? inserted in respective through orifices 13 made along the side walls 12. The orifices 13 put adjacent niches 9 in communication and thus allow? to keep the pipes 5, 6 within the transversal dimensions of the device 1, similarly to the role played by the holes 10.

Is the possibility foreseen? that the pipes 5, 6 are both housed along a plurality? of niches 9, built along the same major face 8a plurality? of niches 9 (in equal or different number to the first plurality), made along the second major face 8a of the same, the first lateral walls 12 and the second lateral walls 12 of the same plate 8 are mutually staggered, with respect to the longitudinal axis of the tubes 5, 6. Yes? already underlined how the side walls 12 constitute useful stiffening ribs: well, the choice (preferred but not exclusive) of arranging them staggered increases this effect, allowing it to be distributed in the best possible way along the entire development of the respective arm 3, 11.

Favorably, the device 1 comprises means a base 16 inserted in a receptacle 17 for the welding used.

The cooling circuit, as already? yes ? seen allows in turn to cool the electrodes 4, 7 (or at least the first electrode 4), thanks to the pipes 5, 6 which ensure the sending of water or other liquid and the subsequent return.

The housing of the pipes 5, 6 in niches 9 formed along at least one side of the first arm 3, already head of support of the former

Claims (1)

R E V E N D I C A T I O N S 1. Welding device, comprising a unit? main (2), also indirectly supporting at least a first support arm (3) for a first electrode (4), and a cooling circuit at least for said first electrode (4), comprising at least one delivery pipe (5) and a return pipe (6) interposed between said unit? (2) and said first electrode (4), said first electrode (4) being movable with respect to a second electrode (7) supported also indirectly by said unit? (2), characterized in that said at least one first arm (3) comprises a shaped plate (8), defining two major faces (8a) two in communication at respective common side walls (12), at least one of said tubes (5, 6) being housed in each of said plurality? of said niches (9) and being inserted into respective through orifices (13) made along said side walls (12). 6. Welding device, according to claim 5, characterized in that two by two in communication at respective said second common side walls (12), each of said tubes (5, 6) being a receptacle (17) of corresponding shape made along the back wall of the respective said niche (9).