SU848214A1 - Device for contract relief welding - Google Patents

Description

one

The invention relates to the production of welding equipment, in particular, contact relief welding, and can be used in machines designed to make, mainly, multipoint welds.

A device for contact relief welding is known, which contains electrodes, one of KOTOf & ix is hingedly connected to the contact seal, d

However, when mounting the self-aligning electrode of this device on the top plate of the compression drive of the welding machine, as a result of repeated shocks, when welding is turned on, 5 connected axes of the hinge appear and uncompensated gaps appear, which violates the stability of the welding current supply and deteriorates the welding quality.

However, if the self-aligning electrode of the device is mounted on the bottom plate of the machine, the hinge does not return to its original position after welding, which leads to the lack of proper contact of the electrode with the product over the entire surface of the welded joint and deterioration of the welding quality.

The purpose of the invention is to improve the quality of welding.

Delivered del is achieved by the fact that the device for contact relief welding, containing electrodes, one of 1 which is pivotally connected to the plate, is provided with an elastic element, and in an efect floor and plate are made coaxial central holes, in which an elastic element is placed, with one end The elastic eliutant is rigidly fixed on the plate, and the second end is fixed on the electrode with the possibility of controlling the elasticity of the element.

FIG. 1 shows a general view of the device of FIG. 2 - section aa

cuts, cut.

in fig. one.

Claims (2)

The device contains electrodes 1 and 2. Electrode 2 is fixed on plate 3 by means of a ball bearing 4. Electrode 2 and plate 3 are made with a pin hole hole, with the axis of the holes being passed through the clamp 4, the elastic element 5 is placed in these holes (eg, tension spring). One end of the elastic element 5 is rigidly fixed in the plate 3 by the medially pressed sleeve 6. Z yroft horse element 5 with nut 7 pressed into it is installed in the electrode 2 with the possibility of axial movement and interacts with the adjusting element 8 (for example, a bolt). By means of the forming element .8 and the nut 7, the preload is reported to element 5. The elastic element can also be made in the form of a torsion spring or a rod of elastic material. The device is installed in the welding machine, while the electrode -1 is fixed on the top plate of the drive for compressing the machine, and plate 3 is placed on the bottom plate of the machine. A welded product 9 is placed between the electrodes 1 and 2. When the welding force passes to the electrode 1, the latter acts on the product 9 and presses it to the electrode 2. If, due to inaccuracies in the assembly and positioning, the working surface of the product 9 is skewed with respect to the surface of the electrode 2, the latter turns on the ball support 4 and takes the desired position providing Normal contact with the product. Here, the elastic element 5 is bent and stretched. Later on, during the welding process, the self-erecting electrode 2, turning on the ball support 4, ensures uniform distribution of the compression force between two welding points in case of uneven relief heights. After removal of the welding force, the elastic element 5 is rectified and the electrode 2 returns to its original position. In addition, the elastic element 5 presses the electrode 2 against the plate 3 by compressing it and compensates for the gaps formed in the process of seeing the mating surfaces of the hinge. The adjustment of the elasticity of the emekte 5 is made by changing its tension, rotating the adjustment element 8, which interacts with the nut 7. The use of this device leads to a more uniform distribution of current and amplification between the group of points welded by one electrode, leveling the heat, eliminating local penetration and internal splashes, increases the service life of welding electrodes, reduces the requirements for assembly accuracy, and reduces the labor intensity of preparation. operations. DETAILED DESCRIPTION OF THE INVENTION Device for contact relief welding, mainly multipoint joints, containing electrodes, one of which is pivotally connected to a plate, characterized in that, in order to improve the quality of the welded joint, the device is provided with an elastic element, and in the electrode and plate it is made coaxial central holes in which an elastic element is placed, with one end of the elastic element rigidly fixed to the plate, and the other end fixed to the electrode with the ability to control the elasticity of the ep & sources of information taken into account in the examination 1; Japanese patent number 24253, cl. 12 In lil.2, 1969. A Figure 1