SU1424910A1 - Arrangement for manufacturing branches - Google Patents

Abstract

The invention relates to pipe and tube production, in particular to devices for flexible pipes, and can be used in any industry for the manufacture of large-diameter bends. The purpose of the invention is the expansion of technological capabilities by ensuring the manufacture of large-sized bends. The device contains a template (W) with a groove in which a slider is installed with the possibility of mixing, along the device axis. On the slider there are two pairs of levers connected with two bending rollers (GR), the axes of which are in contact with the bows inclined to the device axis, with them. When lowering W, moving apart, the GR bends around the blank around W. 4 Il.

Description

The invention relates to pipe bending production, in particular to devices for bending pipes, and can be used in any industry for the production of large-diameter bends.

The aim of the invention is the expansion of technological capabilities by providing the manufacture of large-sized products.

. FIG. 1 shows the device at the beginning of the bending process (the upper position of the template); in fig. 2 - the same, at the end of the bending process (lower position of the template); in fig. 3 is a section A-A in FIG. one; in fig. 4 is a section BB in FIG. 3

The device contains a template 1 with a shank for connecting with a piston of a vertical hydraulic press (not shown), moving in guides 2, two pairs of levers 3 carrying two bending rollers 5 mounted on axles 4. Levers 3 are joined by hinges 6 in pairs. The device also contains a unit for turning the levers 3, including guides 7 mounted obliquely from the device axis, support bearings 8 on the axes 4, cooperating with the guides 7, and a slider 9 installed in the through-groove of the template. The hinges 6 are mounted on the half-hinge 9, the guides 6 are on the press table (not shown).

The device works as follows

In the space between the template 1, which is in the upper position and bending rollers, a tube blank is fed, which easily accommodates due to the free motion of the slide 9. Then, as the pattern is lowered, the creep movement upwards and the pattern surface presses on the blank. At the same time, the force from the slider is transmitted through the levers to two bending rotating rollers 5, the ends of the axes of which, contacting through the bearings 8 with the inclined guides 7, move the levers 3 apart, ensuring the bending of the blank around the template 1.

On zaerschenii process are flexible at the lower position of the template 1, the ejection of the workpiece.

On the proposed device, the bending of large-sized thick-walled billets is ensured at a reduced operating cost.

Claims (1)

Invention Formula A device for manufacturing taps, mainly on vertical presses, comprising a template mounted for movement along the device axis, two pairs of levers supporting two bending rollers mounted on the axles and connected in pairs by hinges, as well as a knob of levers the purpose of expanding technological capabilities by ensuring the manufacture of large-sized products, the knot of turning the levers is made in the form of guides The bending rollers arranged to cooperate with the respective guide and the slider mounted with limited movement along the axis of the device are made through the rectangular groove in the pattern to accommodate the slider, and the hinges are fixed on the slider. one Vb FIG.