SU531599A1 - Roller bending machine for conical shells - Google Patents

Description

The invention relates to the field of metal forming, in particular, to the production of bent sheet products.

Known roll-ups for bending the conical shells, comprising an upper work roll with a drive roller at one end and freely rotating rollers on the rest of it, a lower work roll with freely rotating rollers located under the drive roller of the upper roll and leading rollers located on the rest of it , as well as two bending rolls installed at an angle to the work rolls with the possibility of its adjustment.

In this machine, the driving rollers of the lower work roll are freely mounted on the shaft and can be fixed on it with the help of dowels, for which there is free space between the driving rollers. The presence of this free space affects the hemming of the input and output edges of the shell.

The purpose of the invention is to improve the hem of the sides of the shell.

For this, in the proposed machine, the driving rollers of the lower roll are fixed rigidly and freely rotating rollers are installed in the spaces between them, while the diameters of all the rollers smoothly decrease towards the freely rotating rollers of the upper work roll.

FIG. 1 schematically shows the arrangement of the rolls of the proposed machine; in fig. 2 - upper and lower work rolls. The machine comprises an upper driving work roll I and a lower work roll 2 located in the same vertical plane, and two bending rolls 3 and 4 symmetrically set at an angle to the work rolls with the possibility of adjusting this angle. On

at one end of the upper drive roller 1, the drive roller 5 is fixed, and the remaining part is equipped with freely rotating rollers 6. At one end of the driving work roll 2, freely rotating rollers 7 are mounted, and the rest of the driving rollers 8 are rigidly fixed, diameters. The gaps between them are filled with freely rotating rollers 9 also smoothly.

variable diameters.

The workpiece is fed into the work area when it is clamped between the driven work rolls 1 and 2, the left edge of the workpiece (Fig. 2) being pressed by the upper drive roller 5 to the freely rotating rollers 7, and the right edge being pressed by one of the lower leading rolls rollers 8 to freely rotating rollers 6. Since the gaps between the drive rollers are filled with freely rotating rollers 9, the lower roller

presses the edge of the workpiece along its entire length, ensuring its bending. The part of the workpiece between the drive rollers moves at intermediate speeds, which are perceived by intermediate rollers 6, 7 and 9. The combination of all speeds makes it possible to manufacture tapered parts.

The filling of the free spaces between the drive rollers of the lower work roll improves the bending in of the entrance and exit edges of the conical shell.

Claims (1)

Invention Formula Roller bending machine for bevel shells containing the upper work roll with the leading roller at one end and freely rotating rollers on the rest of it, the lower roller with freely rotating rollers located under the leading an upper roll and leading rollers located on the rest of it, as well as two bending rolls set at an angle to the work rolls with the possibility of its adjustment, characterized by that, in order to improve the hem of the edges of the shell, the driving rollers of the lower roll are fixed rigidly, and freely rotating rollers are installed in the spaces between them, while the diameters of all the rollers are made gradually decreasing in the direction of the freely rotating rollers of the upper roll. PPGPP p ittlK gpp at Sh