SU738715A1 - Machine for helical bending of products - Google Patents

Description

(54) INSTALLATION FOR SCREW FLEXIBLE PRODUCTS

one

The invention relates to the bending of pipes and profiles.

A known apparatus for helical bending of articles, comprising a drive mandrel with a rolling roller and a stop with a groove, the working surfaces of which are inclined to each other at an angle a. The width of the groove in its middle part is equal to the nominal diameter of the bendable sh-sh.

The disadvantage of the unknown installation is low productivity due to the fact that the formation of the helical form is carried out in only one part.

The closest solution of the known ones is an installation for screw bending of products, comprising two face plates and interposed disks mounted on a common shaft 2.

 However, it is also impossible to simultaneously bend several products on this installation.

The aim of the invention is to increase productivity by simultaneously bending several products.

This goal is achieved by the fact that in the known device one faceplate is mounted on the shaft so that it can be rotated and moved along the shaft and the discs are freely on the shaft, the faceplates of the discs have holes or grooves with a configuration corresponding to the profile of the bent parts, while the holes or grooves made around the circumference, the diameter of which is equal to the diameter of the screw surface of the bent products.

FIG. 1 shows a general view of the installation for screw bending products; in fig. 2 is a section A-A in FIG. one; in fig. 3 - diagram of screw bending products.

10 Installation for screw bending of products contains a base 1 with brackets 2 and 3 with bearings 4 fixed on it. In bearings there is a shaft 5 with a rotary faceplate 6 fixed on the shaft with a key 7 and a nut 8, a stationary face 9 and self-adjusting discs 10, divided distance sleeves 11. For installation of the products 12 in the swivel and fixed faceplates, as well as in the self-adjusting 20, the discs have grooves or holes with a configuration corresponding to the profile of the bent products. The holes or grooves are placed around a circle whose diameter is equal to the diameter D (Fig. 2) of the screw

surfaces of the bent products. The bracket 2 has a limit switch 13, which interacts with the stop 14 mounted on the rotary faceplate 6. On the base 1 there is a gearmotor 15 connected through the coupling 16 to the shaft 5.

The installation works as follows.

By moving the stop 14 along the rotatable faceplate, the required bending angle is adjusted taking into account the spring angle of the products. Products are inserted into holes (or slots) of faceplates and discs. The gearmotor 15 is turned on, which, through the clutch 16, turns shaft 5, and with it the rotating faceplate, until the stop 14 presses the end switch 13, which turns off the gearmotor 15. When turning the disc 16 by bending angle and the self-adjusting wheels are turned directly by the parts themselves. The angle of rotation of each subsequent self-adjusting disk, starting from a fixed faceplate, is larger than the previous one by the value of q.

SG-dg

where a is the angle of the bending parts;

n - the number of self-aligning

disks (Fig. 3).

The rotation of the gearmotor 15 is turned in the opposite direction until the residual deformation of the twisted products is removed. Products are removed from installation. The rotation of the shaft 5 with the rotary faceplate sets the device to its original position. At the proposed installation, several parts can be twisted (flexibly) at the same time. The number of parts is determined by the design of the chuck and discs and

738715

POWER of the engine developing necessary effort are flexible details.

The application of the proposed installation improves labor productivity, since it is possible to bend by twisting simultaneously several parts. At the proposed installation, it is possible to bend different diameters, lengths and shapes of the cross-section of the parts, moving the rotary faceplate along the shaft axis and the shape of the holes or grooves in the disks.

Claims (2)

Invention Formula . Installation for screw bending products, mainly pipes and profiles, containing two face plates and disks located between them mounted on a common shaft, characterized in that, in order to increase productivity, by simultaneously bending several products, one face plate is installed on the shaft so that it can be rotated and movement along the axis of the shaft, the disks — on the shaft freely., in the faceplates and disks there are holes or grooves with the configuration corresponding to the profile of the bent products. 2. Installation according to claim, characterized in that the holes or grooves are made in faceplates and discs on a circumference, the diameter of which is equal to the diameter of the helical surface of the bent products. Information sources, taken into account in the examination 1. USSR Author's Certificate No. 538763, cl. On 21 D 11/06, 1974.  2. USSR author's certificate No. 352698, cl. In 21 D 11/06, 1971 (prototype). / 2