SU793775A1 - Wedge device to roller machines for working polymers - Google Patents

Description

one

The invention relates to the processing of polymeric materials on roller machines, in particular, for the manufacture of sheet products of a complex profile, for example, by the calendering method.

A wedge device for roller machines is known, containing it mounted on a roll bed and located along the gap between the last sectional wedge-reflector with mixed sections fixed on a support and having a profile of cross section 1 corresponding to the configuration of the gap between the rolls.

In the known device, the sections are made stationary, which cannot provide a sufficient intensification of the process of mixing and processing the material.

A wedge device for roller machines for processing polymeric materials is known, which contains a wedge-reflector installed along the gap between the rollers with mixing sections fixed on a support, having a cross-section profile corresponding to the gap configuration and connected with a drive of their reciprocating movement perpendicularly rolls 2 axes. In such a device, all sections are movable, which provides

viscosity viscosity is relative to the entire length of the rolls and eliminates stagnant zones in the material being processed. The disadvantage of such a device is

the fact that in the case of the manufacture of sheet products of a complex profile, a uniform impact on the material along the entire length of the roll does not provide different values of the viscosity of the material in the zone of differential gauges

and in places away from the gauge interface. This leads to incomplete flow of material into the zones of differential gauges, as a result of which sinks appear on the surface of the complex profile sheet.

Bubbles, as well as the geometrical dimensions of the profile of the sheet do not correspond to the profile of the zones of differential gauges.

The purpose of the invention is to improve the quality of the material by creating optimal conditions for processing on rollers with a complex profile.

This goal is achieved by the fact that in the device containing a wedge reflector installed along the gap between the rolls

cross-sections, fixed on a support, having a cross-section profile corresponding to the configuration of the gap by the rolls and connected with the water and their reciprocating movement perpendicular to the axis of the rolls, according to the invention, part of the sections are fixed and the movable sections are located in zones of the gauge rolls of profile rolls .

FIG. 1 shows the device, a general view; in fig. 2 - section A-A of FIG. one; in fig. 3 - section bb FIG. one.

The device contains a wedge-reflector 4 installed along the gap between the rollers 1, 2 of the calender 3. The latter has mixing sections 5, 6 fixed to support 7. Moreover, sections 6 are mounted on support 7 fixedly with the help of bolts 8, and section 5 - with the possibility of reciprocating moving perpendicular to the longitudinal axis of the rolls, for which between sections 5 and support 7 are installed / spring elements 9. In bearings 10, a camshaft shaft I, equipped with a rotation drive from an electric motor 12 through a pulley 13, is fitted by means of a V-belt soap has 14 and the pulley 15.

Sections 5 and 6 have a cross-sectional profile corresponding to the configuration of the gap a between rolls 1 and 2, and the roll 1 is made with a complex profile, with differences in gauges.

The wedge-reflector 4 is installed on the frame 16.

The device works as follows.

After the polymer material 17 is loaded into the gap a between the rollers 1, 2, the electric motor 12 is turned on. Through the pulley 13, the V-belt transmission 14 and the pulley 15 are brought into rotation, the cam shaft 1b under the influence of which the movable sections 5 of the wedge reflector 4 are driven in the reciprocating motion on the fixed support 7, due to which a vibration effect on the material is carried out. As a result, the viscosity of the material located in the zones of differential gauges decreases, which causes an intense flow of material from places remote from the section of calibers to the zone of differential gauges. This overflow ensures that the material is completely filled with differential zones.

calibers. By varying the rotational speed of the camshaft 11, as well as the configuration of its cams, it is possible to adjust the intensity of the vibration effect on the polymer material, depending on the properties of the material being processed. For more rigid polymer compositions, a more intense vibration effect should be used. Elastic elements 9

at the same time, a constant contact of the movable sections 5 of the wedge 4 with the camshaft shaft 11 is provided. The bolts 8 ensure the immobility of the sections 6 of the wedge 4. Use of the proposed device

for the manufacture of polymeric sheet complex profiles, it will eliminate such types of scrap as shells, bubbles on the surface of a complex profile sheet, especially in the manufacture of polymers.

sheet composite products from rigid polymeric materials.

Claims (2)

1. US Patent No. 2625709, cl. 264-175, published. 1953. 2. USSR author's certificate number 522061, cl. В 29В 1/08, 1974 (prototype).  I ij -And l Fa.H.