RU1822352C - Spiral multilayer coiling machine - Google Patents

Abstract

Use, in pipe bending works in any branch of mechanical engineering, in particular, when winding two-plane spirals from high-pressure steam billet heaters from steam billets, of steam and turbine installations of thermal and nuclear power plants. The purpose of the invention is to increase productivity, reliability and safety of work is achieved by installing each pressure roller with the possibility of free movement in a plane passing through the axis of the corresponding drive roller, as well as by installing said roller with the possibility of rotation about an axis located in a plane perpendicular to the axis corresponding drive roller. 1 C.p. f-ls, 3 ill.

Description

The invention relates to a pipe bending technique and can be used in any branch of mechanical engineering, in particular power engineering, for winding coarse billets from two-plane spirals of high-pressure heaters of steam turbine plants of thermal and nuclear power plants.

The aim of the invention is to increase productivity, reliability and safety.

Figure 1 shows the machine, a General view; figure 2 is the same, a top view; in Fig.Z - section aa in Fig.1.

The multi-layer spiral winding machine comprises a bed 1, a workpiece feeding mechanism 2, comprising drive 3 and pressure 4 profiled rollers, each of which is mounted in a ferrule 5, connected by a rod 6 to the pneumatic cylinder 7 and mounted for movement in the guides 8. The pneumatic cylinder 7 fixed to the frame 1 by means of a cylindrical hinge 9. Each pinch roller is mounted with the possibility of free movement in a plane passing through the axis of the corresponding drive roller, and also with the possibility of rotation and about an axis situated in a plane perpendicular to the axis of the corresponding drive roller.

The machine also contains a mechanism 10 for winding the workpiece 11, including the mandrel 12, bending rollers 13 and the drive 14.

The machine operates as follows.

With a roll 15, the workpiece 11 is fed between the split drive 3 and the pressure 4 rollers under the mandrel 12 onto the bending roller 13 of the winding mechanism 10. Compressed air is supplied to the pneumatic cylinders 7 and, through the rods 6 and clips 5, the rollers 4 press the workpiece against the rollers 3. The drive of the winding mechanism is turned on, and the end of the workpiece is bent by a bending roller 13 at an angle a. At the end of the bending, the drive of the feed and clamping mechanism is turned on, the workpiece is pushed between the rollers 13 and

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the mandrel 12 into the drive 14, while folding into a bay.

During bending of the workpiece, as well as during folding, a torque is created. Under the action of which, the workpiece rotates toward the drive during its movement and enters into it.

After the drive takes 1/2 the length of the workpiece, the pressure rollers are retracted and two planes of the spiral are wound simultaneously.

Claims (2)

The proposed machine allows to increase productivity, reliability and safety by eliminating the need to manually insert the bent end of the workpiece into the drive. Formula 1, Machine for multilayer spiral winding containing a bed, mechanism feeding the workpiece with drive and pressure profiled rollers, a workpiece winding mechanism including a mandrel, bending rollers and a storage device, characterized in what. in order to increase productivity, reliability and safety of operation, each pressure roller is freely movable in a plane passing through the axis of the respective drive roller. 2. The machine according to claim 1, characterized in that each pinch roller is rotatably mounted about an axis located in a plane perpendicular to the axis of the corresponding drive roller. twenty Fig. /  Lj Figz ABOUT