RU1809805C - Worm machine for processing high-viscosity polymeric materials - Google Patents

Abstract

Usage: in the tire and rubber industry when processing high viscosity polymeric materials, for example, rubber mixtures, on worm machines. SUBSTANCE: transporting channels of the inner surface of the body are made in the longitudinal section of the machine rectangular with a slope relative to the generatrix of the inner surface of the body. This arrangement of channels makes it possible to improve the quality of the processed material due to the possibility of producing these channels in large quantities, to expand technological capabilities and reduce the laboriousness of manufacturing a machine. 2 ill.

Description

The invention relates to equipment for processing highly viscous polymeric materials, e.g., natural rubber / rubber mixtures, and can be used in the tire and rubber industries.

The invention provides an improvement in the quality of material processing by changing the geometry of the conveying channels, expands technological capabilities and reduces the laboriousness of manufacturing these channels.

This is achieved by the fact that in a worm machine for processing highly viscous polymeric materials, comprising a housing made in the mixing zone of individual rings and placed inside the housing of the worm, while in the mixing zone along the inner surface of the housing and the outer surface of the worm channels of variable depth, moreover, a change in the depth of the transporting channels of the body is selected opposite to a change in the depth of

the worm channels according to the invention are transporting; the channels are made in a longitudinal section of the machine rectilinear with an inclination relative to the generatrix of the inner surface of the body.

Such straight channels can be manufactured on mortising or planing machines where it is not possible to make helical channels. In addition, the manufacture of channels with a small angle of inclination to the generatrix, for example, from 0 to 30 °, with just the first production on a mortising or planing machine with reciprocating movement of the cutting tool, it is possible to obtain a larger number of channels along the perimeter of the hole of the casing with the same width compared to helical channels with an approximate helix angle of about 45 °. This makes it possible to form more partitions between the channels on which the material is cut and plasticized during the operation of the machine, i.e. the material will be processed more intensively

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the same total cross-sectional area and channel capacity, i.e. the machine will use less energy. 1. In addition, the bottom surfaces of the straight channels are much more technologically advanced for polishing than the bottom surfaces of the helical channels.

Fig. 1 shows a worm machine in a mixing zone in longitudinal section (worm not shown); figure 2 is a section aa in figure 1.

The worm machine comprises a casing 1 made in the mixing zone of separate rings 2 and 3, and placed inside the casing 1 of the worm (not shown in the drawing). In the mixing zone along the inner surface of the casing 1 and the outer surface of the worm, the transport channels 4 are made variable depths with 5 partitions between them. Moreover, the change in the depth of the transporting channels 4 of the housing 1 is chosen opposite to the change in the depth of the transporting channels of the worm, namely, the depth of the channels and the housing 1 varies from zero at the beginning of the mixing zone to a maximum in the middle of the zone and again to zero at the END of the mixing zone.

In this case, the transporting channels 4 of the housing 1 are made in a longitudinal section of the machine rectilinear with an inclination relative to the generatrix of the inner surface of the housing 1. The angle of inclination of the rectilinear channels 4 and their number in different rings can be different.

A worm machine works as follows.

The polymer material to be processed is fed through the screw conveyor channels of the worm to the mixing zone. In the mixing zone, the processed material flows from the worm channels decreasing in depth into the channels 2 of the ring 2 increasing in depth, while undergoing significant plastic deformations and the mixing effect, Moving further from the channels of the ring 2 to the decreasing depth channels of the ring

3, the material flows from these channels into the channels of the worm, which increase in depth, and are again subjected to intensive mixing and plasticization.

Thus, thanks to the decline

the complexity of manufacturing inclined rectilinear conveying channels by expanding the technological capabilities of manufacturing them on planing machines, as well as improving the quality of material processing due to the quality of making more rectilinear channels on the same perimeter as compared to screw channels, reduces the complexity of polymer processing

Claims (1)

material and quality improves. SUMMARY OF THE INVENTION Worm machine for processing highly viscous polymeric materials containing a housing made in the zone mixing from separate rings, and the worm is placed inside the housing, while in the mixing zone transporting channels are made along the inner surface of the housing and the outer surface of the worm variable depth, and the change in the depth of the transporting channels of the body is chosen opposite to the change in the depth of the transporting channels of the worm, so that, in order to improving the quality of material processing, expanding technological capabilities and reducing the complexity of manufacturing machines that transport channels of the inner surface of the body made in a longitudinal section of the machine, rectilinear with an inclination relative to the generatrix of the inner surface of the housing. . . dzig. 1