SU1240487A1 - Apparatus for spatial bending of pipes - Google Patents

Description

The invention relates to the manufacture of pipelines and can be used for bending pipes having two or more bends without mating straight sections in different planes.

The purpose of the invention is to improve the performance of the device for bending pipes that have two or more bends without mating straight sections in the same or different planes, by means of universal fastening of the insert.

FIG. 1 shows the assembly structure of a device with a kinematic scheme of rotation of the insert, a section; in fig. 2 - the same, top view; in fig. 3 shows the node I in FIG. 1 (liner mounting); in fig. 4 shows a device configured for the first bent pipe operation, a slit; in fig. 5 - the same, top view; in fig. 6 — device configured for the second bending operation, incision; in fig. 7 - the same, top view.

The device consists of a bending mandrel 1, on the front side of which a bracket 2 with a groove 3 is fastened. A detachable insert 4 with a stream for placing the workpiece is equipped with an annular sector 5, having the form of a groove of bracket 2, comes into mating with the groove 3 of the bracket 2 and is fixed pressure screw 6.

The device works as follows.

For bending pipes in a given plane, a reference pipe (not shown) is placed under the clamped part of the pipe in a detachable liner 4 with a stream. The sector 5 of the liner 4 is deployed along the groove 3 of the bracket 2 at the required angle of the plane of the pipe around the central axis 7 of the stream and fixed in the working position by the screw 6. The reference pipe after adjusting the device is removed and its place in the stream under the clamped part of the pipe of the liner 4 is set to be flexible and pre-bent pipe. The pipe is bent on a bending mandrel. In order to bend the pipes in the next plane, the operation of installing the insert 4 along the reference pipe is repeated.

To bend a pipe in a different plane, in relation to the previous one, the device is adjusted according to the next section of the reference pipe. The adjustment process is repeated, i.e. The reference tube is simultaneously placed in the stream of the liner 4 and the bending mandrel 1. At that, sector 5 turns to the required angle, occupies a new position, and is fixed with screw b (Fig. 4, 6). A pipe is inserted into the newly tuned device and clamped in the stream under the clamped part of the tube of the liner 4 with that part which was bent in the previous operation.

I

FIG. five

ig.b

Compiled by I. Kovrigina

Editor S. LisinaTehred I. VeresKorrektor G. Reshetnik

Order 3429/6 Circulation 783 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

1130a5, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

FIG. 7

Claims (1)

DEVICE FOR SPATIAL FLEXIBILITY OF PIPES containing a flexible mandrel, a detachable liner fixed to it with a handle for placement of the workpiece, and an insert position fixation unit, characterized in that, in order to increase productivity, the fixation unit is made in the form of an annular sector, a congruent groove is made on the mandrel sector of the form, the sector is placed in the groove of the mandrel and mounted on the liner. '5 FIG. 1