SU1459860A1 - Apparatus for resistance welding - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to the production of resistance welding machines, and can be used in resistance spot and relief welding machines. The purpose of the invention is to improve the quality of the welded joint by reducing the inertia of the compression drive, eliminating the bending alignment moment, more uniform distribution of the compressive force in the plane of the welded joint and the fixing accuracy of the electrode plate in the initial POSITION. Console 7 is supplied with - the wife with ellipsoid supports 5 and. 1 The invention relates to mechanical engineering, in particular to the production of resistance welding machines, and can be used in resistance spot and relief welding machines. The aim of the invention is to improve the quality of the welded joint by reducing the inertia of the compression drive, eliminating the bending equalizing moment, more uniform distribution of the compressive force of the central spherical support 9. The plate 3 is mounted on ellipsoidal supports 5. The elastic element 8 is made in the form of a hemispherical cross, installed with its own ends on the slab with the ability to interact with its convex surface with a spherical support 9. In the initial state, the elastic element 8 presses the slab j to xv stovikam ellipsoidal nut 4. By applying force to the welding electrode 1 to be welded the latter acts on the product and presses it to the electrode 2. In case the skew of the electrode surface with respect to the article or uneven terrain height top plate 3 is rotated ellipsoidal nuts. The elastic element 8 slips relative to the spherical support 9, and the electrode 1 occupies the desired position. Plate 3 is self-adjusting during welding, ensuring an even distribution of compressive forces. 3 il. i W СП QD 00 О) in the plane of the welded joint and accuracy of fixation of the electrode plate in the initial position. FIG. 1 shows the device, a general view; in fig. 2 - the device when welding with a skew, a general view; in fig. 3 - view of the electrode plate from the side of the elastic element. The device contains electrodes 1 and 2, the electrode 1 is rigidly fixed on the electrode plate 3, which can move on ellipsoidal supports.

Description

made in the form of nuts 4, screwed on the axis 5. In the plate 3 there are special holes for ellipsoid nuts 4, in which sliding sleeves 6 are installed, made, for example; steel, in order to reduce friction between plate 3 and ellipsoidal heats 4. Pyita 3 is connected to the console 7 of the welding machine through an elastic element 8, made in the form of a hemispherical cross, for example, steel 60C2 or 50HFA, and a spherical support 9, rigidly mounted on the console 7 of the welding machine, Plate 3 is electrically connected by flexible busbars to the welding transformer. ..

In the initial state, the elastic element 8 presses the plate 3 to the shanks of the ellipsoid nuts, fixing its position determined by the tightening of the ellipsoid nuts. The preliminary adjustment of the position of the plate 3 and the tightening of the elastic element 8 is carried out with ellipsoid nuts 4, screwing them on the axis 5.

The device is installed in a welding machine; in this case, electrode 1 is fixed on the upper electrode plate 3, and electrode 2 is fixed on the lower electrode plate of the machine. Between the electrodes 1 and 2 place the product to be welded. When a welding force is applied to the electrode 1 through the console 7, the elastic element 8 and the plate 3, the electrode 1 acts on the product and presses it to the electrode 2.

If due to inaccuracy of assembly and

0

15

0 25

thirty

35

deliey In the further welding process, the self-adjusting plate 3, turning on ellipsoid-nuts 4, ensures an even distribution of the compressive force over the surface of the mating part in case of uneven relief heights and with an inclined surface of the product caused by its design.

The use of the invention provides a more uniform distribution of current and force around the perimeter of the relief or between a group of reliefs (points), heating, avoiding local penetrations and the occurrence of a bending leveling moment, increases the service life of the welding electrodes, reduces the inertia of the compression force, requirements for assembly accuracy , labor-intensive preparatory operations, allows to significantly improve the quality of welding.

Claims (1)

Invention Formula A contact welding device containing electrodes mounted on plates, of which at least one is hinged by means of a spherical support with a console, and an elastic element, characterized in that, in order to improve the quality of the welded joint by reducing the drive inertia compression, elimination of bending leveling moment, more uniform distribution of compression force in the plane of the welded joint and accuracy positioning the working surface of the fixing electrode plate in the original the product is skewed relative to the surface of the electrode 2 or the electrode 2 is skewed when installed on the lower electrode plate, or the reliefs of the product have unequal height, the upper electrode plate 3 is turned on ellipsoidal nuts 4, and the elastic element 8 slips relative to the spherical support 9 and the electrode 1 attached to electrode plate 3, takes the desired position, providing normal contact with the position, the console is equipped with height-adjustable ellipsoidal supports, evenly spaced around the circumference and about axis electric .jg yes, and the central spherical support plate mounted on the ellipsoidal supports, the elastic member is a hemispherical cross established their ends E on the plate to cooperate with its convex spherical bearing surface of the frame. 50 Fib.2 Fig.Z