SU1310154A1 - Arrangement for assembling and shaping the reverse side of circular joints - Google Patents

Abstract

The invention relates to the field of welding, namely to the structures of devices for holding the molten metal of the weld pool and forming the back side of the seam with one-sided welding, as well as for centering and assembling cylindrical articles. The invention can be used in various fields of engineering in the manufacture of parts such as shells. The purpose of the invention is to increase the reliability of the device in operation. The device comprises a frame on which an even number of forming elements are placed that form the backing ring. The ends of the forming elements interact with each other along slide planes at an angle to the axis of the device. At the ends of the Formations. the elements are made with bevels parallel to the specified slip platform and interacting with counter bevels of clamping strips rigidly fixed to the frame. When the forming elements are moved by a unclamping drive, the interaction of the slip planes and bevels ensures that they are tightly pressed against each other and a solid backing ring is formed. 5 il. C 9 (L SP

Description

one

The invention relates to welding, and more specifically to the design of devices for holding the molten metal of the weld pool and forming the back side of the seam with one-sided welding, as well as for centering and assembling cylindrical products, and can be used in various parts of the machine industry in the manufacture of shell-type parts,

The aim of the invention is to increase the reliability of the device in operation.

FIG. 1 shows a general view of the device; in fig-. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. 1 (.forming elements in working position); on FI1. 4 - section bb in FIG. 3; in fig. 5 shows the node I in FIG. one.

The device contains a welded frame 1 and a backing ring consisting of an even number of forming elements 2, pivotally connected to expansion mechanisms - hydraulic jets 3. The ends of forming elements 2 interact with each other along plain surfaces 4. At these same ends, bevels 5 are also made. parallel to the indicated planes m. On the frame 1, the clamping strips 6 are fixedly mounted, whose working surfaces facing the forming elements 2 are parallel to the bevels 5. In the clamping slats 6 and at the ends of the forming elements 2 perform Mutually perpendicular grooves 7 and 8, in which guide pins 9 are placed, connecting the backing ring with the frame. On the forming elements are fixed interchangeable lining 10 with forming grooves 1 1.

The device works as follows.

Before starting, the device is inserted into the pre-installed welded shells in the compressed position (the mechanism for moving the device is not shown) and is set so that the axis of the forming groove 11 is aligned with the plane of the welded ends of the shells.

542

The unclamping mechanisms 3 are turned on, and the forming elements 2 are dispersed, tightly against the inner surface of the shells, taking the form of a regular ring, giving the same shape to the welded edges of the shells. At the same time, a constant size a between the working surfaces of the clamping strips 6 ensures the free movement of the forming elements 2 relative to each other while maintaining a tight connection between them. The annular weld is welded along the joint of the edges of the shells. At the end of the welding process, the device is brought to its initial position.

The use of the Hope device allows you to get a solid backing ring of the correct geometric

molds and ensure its dense adhesion to the inner surface of the products being joined, which improves the conditions of the welding process and ensures high quality

compounds

Claims (1)

Invention Formula A device for assembling and forming the reverse side of the annular joints, comprising a framework with a unclamping mechanism and associated forming elements associated with it, which are interoperable between on sliding surfaces made at their ends at an angle to the axis of the device, characterized in that, in order to increase reliability in operation, it is equipped with pressure bars and guide pins at the ends of the forming elements and pressure bar surfaces facing them, bevels are made parallel to the indicated slip planes, the pressure plates are rigidly fixed to the frame in the zone of interaction of the ends of the forming elements with each other with the possibility of their contact bevels with counter bevels of the forming elements, and the guide pins are mounted in mutually perpendicular grooves, made respectively in the pressure bars and forming elements with the ability to move in them. Buff A fig 1 cffuffZ duff in  y / 77g7 x T five fi9. 3 It 1: 1 -YU four, yz fe one one cZZZZZZ / 7 fie.Af / TO y y / rro cffuf.S Compiled by M. Bu New Editor A. Gulko Tehred N. 1 Luschenko Proofreader Order 1851/12 Circulation 976 Subscription VNIIPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and Polygraphic Enterprise, Uzhgorod, ul. Project, 4