JPS591153B2 - Flash welding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a flash welding device having an inlet electrode stand and an outlet electrode stand.

FIG. 1 is a diagram showing a conventional flash welding device. Reference numeral 1 indicates an exit electrode stand, which is fixed to a lower frame 6, and 2 indicates an inlet electrode stand, which moves within a slide mechanism 5 provided on the lower frame 6. It is fastened to the guard bar 4 and is configured to be moved by the upset cylinder 3. However, in case of a large-sized machine with a large cross-sectional area of the welded object, the sizes of the input and output side electrode stands 1 and 2, which require a large upset force and cranking force, are large, and therefore the spacing between the slide mechanisms 5, that is, the guard bar 4, is large. Since the distance between the fulcrums is large and the weight of the input and output electrodes 1 and 2 is also heavy, the bending moment for both phases against the guard bar is large.In order to maintain the mechanical precision required for flash welding, it is necessary to Since the burden becomes extremely large and the slide mechanism 5, guard bar 4, and even lower frame 6 become huge, the conventional flash welding apparatus having the above configuration has a problem in manufacturing a large machine. This invention was made in view of these points, and even if the electrode stand becomes large, it can be constructed with a relatively small and simple lower frame, and flash welding can be used to easily manufacture large machines. It provides equipment.

An embodiment of the present invention shown in FIGS. 2 and 3 will be described below.

FIG. 2 is a front view, and FIG. 3 is a side view. In these figures, reference numeral 1 denotes an outlet electrode stand, and 2 an inlet electrode stand, which are supported by parallel links 7, 8 and 9, 10 on a lower frame 6, respectively. Reference numeral 11 is a synchronized link for moving the parallel links 7, 8, 9, and 10 in synchronization with each other in opposite directions, and is separated by L/2 from the center of the L dimension between the fulcrums of link 7 and the lower fulcrum of link 10. Each is connected with a pin at each position.

In the parallel links 7 to 10, the weight of both the exit and entry electrode stands 1 and 2 does not act as a bending moment, and only the slight unbalance of the movement resistance of the exit and entry electrode stands 1 and 2 acts. Basically, it is simple compression. Therefore, even if the electrode stands 1 and 2 are large and heavy, they can be supported by a simple link mechanism, and the lower frame 6 can also have an extremely simple structure, so there are no manufacturing problems. No. As described above, according to the present invention, even if the electrode stand becomes large in weight and size, a simple moving mechanism can be used, so that a large-sized flash welding apparatus for steel can be easily manufactured.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional flash welding device;
The figure is a front view showing one embodiment of the invention, and FIG. 3 is a side view of FIG. 2. In the figure, 1 is an output electrode stand, 2 is an inlet electrode stand, 6 is a lower frame, 7 to 10 are links, and 11 is a tuning link.

Claims (1)

[Claims] 1. an incoming electrode stand, an outgoing electrode stand disposed opposite to the incoming electrode stand, and first and second parallel links that respectively connect the incoming and outgoing electrode stands to the base; A flash welding device comprising a synchronized link that moves the first and second parallel links in opposite directions in synchronization.