JPS5853383A - Mash seam welding device - Google Patents

Abstract

PURPOSE:To execute welding in a short time by a simple welding device, by placing a rolling roll in front of a welding roller electrode, and thinning thickness of a metal to be worked, in a mash seam welding device provided with the roller electrode. CONSTITUTION:When 2 metallic strips 3, 4 clamped by clampers 1, 2 are pressed by a pair of upper and lower roller electrodes 5, and seam welding is executed, a pair of rolling rolls 7 are additionally provided in front of the roller electrodes 5, and the thickness of the strips 3, 4 is reduced by rolling them before they are inserted between the roller electrodes 5 and are welded. Scrap parts 8, 9 generated in case of welding by electric conduction and pressure using the roller electrodes 5 are cut and removed by a cutting device 6 placed immediately behind said electrodes. According to this device, the thickness of the strips 3, 4 is reduced by the rolling roll 7, therefore, a welding speed by the roller electrodes 5 increases, also cutting resistance in case of cutting the scrap parts 8, 9 becomes small, and the whole device can be made small-sized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a roller type electrode to energize and pressurize the electrode, and rotates the roller type electrode to continuously weld overlapped members to be welded. Welding (also known as seam welding), generally known as mash seam welding
This invention relates to a matshu seam welding device which thins the thickness of the overlapping part by plastic deformation and approaches the thickness of the original plate.In particular, this invention involves a pair of roller type electrodes and By arranging rolling rolls to reduce the thickness of the pair of metal strips to be welded before seam welding with the roller type electrode, the seam welding speed can be shortened and the scrap metal placed after the roller type electrode can be reduced. The present invention aims to provide a mash seam welding device [7] in which the welding device is made smaller by reducing the cutting resistance of the cutting device.

Figures 1 to 5 all show this type of conventional matshu seam welding equipment, with Figure 1 being an IE side view, Figure 2 being a right side view, and Figure 3 being a left side view. A pair of scrap parts (8) (9) of a pair of metal strips (a+ (4)) are clamped by two sets of clampers (1) (2) on the exit side and the inlet side and seam welded by a pair of roller type electrodes (5).
) is cut by a cutting device (6) disposed downstream of the roller type electrode (5).
According to the conventional matshu seam welding device having such a configuration, not only the welding speed is extremely slow due to the thick plate thickness of the metal IJ tubes (3) and (4), but also the cutting device for cutting the scrap after welding. Since the cutting resistance caused by (6) is large, there is a drawback that the welding device becomes large together with the cutting device (6) as well as the conveying device for moving the thick and heavy metal strips (3) and (4).

This invention has been made with attention to this point, and a pair of rolling rolls are arranged in front of a pair of roller-type electrodes, and a pair of metal parts to be welded before seam welding by the roller-type electrodes can be welded. Matsushi seam welding equipment is designed to shorten the seam welding speed by reducing the plate thickness, and to reduce the cutting resistance of the scrap section cutting device placed after the roller type electrode, thereby reducing the size of the welding equipment. This is what we are trying to provide.

That is, although FIGS. 4 to 7 each show an embodiment of the present invention, the same reference numerals as those in the above-mentioned conventional system (FIG. 1) refer to the same constituent members, and the explanation thereof will be omitted.

(7) is a pair of rolling rolls arranged in front of the pair of roller type electrodes (5), and this rolling roll (7) is used to weld the seam of the pair to be welded before the seam welding by the roller type electrodes (5). This is provided to reduce the thickness of the metal strips (3) and (4) to a predetermined thickness, and a seam welded metal strip (3) and (4) is provided after the roller type electrode (5). The provision of a cutting device (6) for cutting the scrap portion (81 (9)) of the metal strips (3) (4) is similar to the conventional one.

As described above, the matshu seam welding device t of the present invention has a metal strip before being inserted between the roller type electrodes (5).
Since the plate thickness of the IJ tube (3) (4) is reduced to a predetermined thickness, not only the seam welding speed by the roller type electrode (5) is significantly shortened, but also the seam welding speed by the roller type electrode (5) is reduced. Scrap section (8) located at the rear stage of (
Since the cutting resistance of the cutting device (6) of 91 is reduced, it is possible to downsize the welding device including this cutting device.

[Brief explanation of the drawing]

1 to 3 show a conventional mash seam welding device, with FIG. 1 being a front view, FIG. 2 being a right side view, and FIG. 5 being a left side view. 4 to 7 all show one embodiment of the present invention, with FIG. 4 being a front view and FIG. 5 being (V) and I! of FIG. 6 is a left side view taken along the (to) line in FIG. 4, and FIG. 7 is a left side view taken along the
It is a right side view taken along the line. In the drawings, (1) and (2) are clampers, (3) and (4) are metal parts, (5) is a roller type electrode, (6) is a cutting device, (7) is a rolling roll, and (8) (91 is the scrap part. In addition, the same reference numerals in the figures indicate the same or corresponding parts. Agent Shin Kuzuno - Figure 6 Figure 5 Figure 7 Figure 41:'' 427-

Claims (3)

[Claims] (1) A rolling roll is placed in front of the roller-type electrode, which has a cutting device for the scrap portion at the rear stage, to reduce the thickness of the IJ tube to a predetermined thickness. Matush seam welding equipment is characterized by: (2) The mash seam welding apparatus according to claim 1, characterized in that a pair of roller-type electrodes seam-welds a pair of metal strips. (3) The mash seam welding device according to claim 1, wherein the pair of metal strips are clamped by three sets of clampers.