SU1377162A1 - Portable arrangement for bead forming of pipes - Google Patents

Abstract

The invention relates to the processing of metals by pressure, more precisely to devices for forming a ridge on small-diameter pipes in the manufacture and repair of pipelines, for example, in ships. The purpose of the invention is the expansion of technological capabilities by ensuring the zigovki of pipes of small diameter (up to 10 mm). The main units of the device are the support rollers 2 and the forming roller (FR) 3 fixed on the bracket 4. The pipe being processed (t) 7 is fixed. A portable device is installed at its end: FR 3 - inside T 7, and roller 2 - outside T 7. By rotating the nut 6, a gap is selected between T 7, FR 3 and roller 2. Zigovka is performed by turning the device relative to T 7. 3 or . from 9

Description

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The invention relates to the processing of metals by pressure, more precisely to devices for forming a ridge on small-diameter pipes in the manufacture and repair of pipelines, for example, in ships,

The aim of the invention is the expansion of technological capabilities by ensuring the bending of pipes of small diameter (up to 10 mm).

FIG. 1 shows the device, a general view; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. 2

The device consists of a housing 1, made in the form of a plate with a groove and a hole. In the groove of the housing 1 are placed the support rollers 2. The forming roller 3 is fixed on the bracket 4 together with the stop 5 of its rotation. Bracket 4 is mounted in the housing bore with the possibility of axial movement by means of a nut 6 interacting with a thread made at the free end of the bracket. All rollers are installed in the same plane and on parallel axes x.

The device works as follows. I,

In a vice (or in a pipe clamp), a pipe 7 is fixed, on the end of which a portable device for zigovka is installed — a mold

roller 3 inwards, support rollers 2 2 from the outside of the pipe.

By turning the nut 6, a winding between the pipe and the rollers 2 and-3 is selected and the device is turned relative to the pipe. At each turn, the nut 6 is gradually tightened until the ridge is completely formed on the pipe.

The use of the invention allows, through the use of only three rollers, of which one is a forming and is located between two supporting rollers, to be zigovagu

pipes of small diameter (up to 10 mm).

Claims (1)

Invention Formula A portable device for pipe bending, comprising a housing with two support rollers and a bracket mounted on it with the possibility of adjusting axial movement, on which the forming roller is fixed and the limiter of its rotation, and the rollers are installed in one plane on parallel axes, about t and h a: - yu e e with the fact that, in order to expand technological capabilities, the body is made in the form of a plate with a groove for accommodating the support rollers and with a hole for accommodating a bracket whose axis is located in a plane parallel to the axes support rollers, and perpendicular to the latter. 3 Phie.1 c :: ii Phi. 2