SU1123870A1 - Screw-type machine for processing polymeric materials - Google Patents

Abstract

WORM MACHINE FOR PROCESSING POLYMERIC MATERIALS, comprising a cylindrical body with a feed funnel and a discharge hole, a sleeve installed in the body, made with longitudinal grooves on the inner surface, and mounted in the body of the worm to the drive, characterized in that, in order to increase the performance of the worm the quality of the processed material by increasing the degree of homogenization, the longitudinal grooves on the inner / liner surface are made in the form of a series of sections located relatively stepwise (L each other along a helical line. (/i.f

Description

S The invention relates to a device for processing polymeric materials and can be used mainly in the community and rubber industry for processing rubber compounds. A known screw-type machine for processing polymeric materials, comprising a cylindrical body with a feed funnel and a discharge opening, a sleeve with spiral grooves and a 1J-driven worm. A disadvantage of the known construction is the low mixing capacity, which, with significant transporting properties, does not create the required stability of the processed mixture. Closest to the proposed, technical essence and the achieved result is a screw-type machine for processing polymeric materials, comprising a cylindrical body with a hopper, a discharge hole, a sleeve installed in the body, made with longitudinal grooves on the inner surface and mounted in the body Worm to with the rotation drive 2. However, the worm machine has insignificant transporting properties of the processed mixture along the cylinder of the body, as a result of which material moves in the cylinder, the material is wound together with the screw: as a result, the productivity of such a machine is relatively low and the quality of the material being processed is not sufficiently high. The purpose of the invention is to increase the productivity of the screw machine and the quality of the processed material by increasing the degree of homogenization. This goal is achieved by the fact that in a screw machine for processing polymeric materials, containing a cylindrical body with a feed hopper and a discharge hole, a sleeve installed in the body, made with longitudinal grooves on the inner surface, and mounted in the body of a worm with a rotational drive, longitudinal the grooves on the inner surface of the liner are made in the form of a series of sections j arranged stepwise relative to each other along a helical line. FIG. 1 shows a screw-driver, a longitudinal section; Fig.2AAA on fig. in fig. 3 in FIG. A section bb in fig. section bb in fig. with the option of positioning the slots of the sleeve with an overlap and simultaneous intersection of each other; in fig. 5 - scanning the surface of the liner with contiguous and overlapping grooves; in fig. 6 illustrates a scanning of the surface of the sleeve with overlapping grooves with the simultaneous intersection of the surfaces of the grooves. The screwing machine contains a cylindrical body 1 with a hopper 2, a discharge opening 3. In the case 1 a sleeve 4 is installed, made with longitudinal grooves 5 along the inner surface. In case 1, a screw is mounted to 6 with a rotational drive (not shown). The longitudinal grooves 5 are made in the form of a series of sections arranged stepwise with respect to each other along a helical line. Depending on the material being processed, the location of the slots 5 is possible. On 4ig. 6 shows the variant when the longitudinal grooves 5 are made in the form of a series of sections arranged in steps with overlapping and intersection of each other. The operation of the worm machine is carried out as follows. The polymeric material to be recycled is fed into the feed hopper 2, where it is picked up by the screw 6 and fed into the sleeve 4. During movement inside the sleeve 4, the polymeric material simultaneously flows through the screw thread of the screw 6 and through the longitudinal grooves 5 of the sleeve 4. Thanks the longitudinal grooves 5, made in the form of a series of sections, arranged stepwise along a helical line, the polymer material flows along a constantly changing cross section, which contributes to the occurrence of multiple compressive forces causing m ,, multiple shear strain and deformation in combination with E shift from srgzayuschik effort and pressure drop protivopslozhnyh rake faces threading Jun 3. and

in ka 6 leads to more intensive homogenization of the polymeric material. The location of the grooves in the sleeve 4 along a helical line provides an increase in the transporting properties of the sleeve, which increases the productivity of the screw machine. The homogeneous material is fed by a worm to the discharge,

123870

Hole hole 3, where it is extruded into the desired profile.

The proposed device will allow to obtain rubber mixtures with more than 5 high degree of homogeneity and to increase the productivity of the worm machines in dependence on the processed material up to 15%,

Ss

FIG.

f1 / 1.

FI9.3

lyT LJ

TD

W4

Claims (1)

. WORM MACHINE FOR PROCESSING POLYMERIC MATERIALS, comprising a cylindrical body with a loading funnel and an unloading hole, a sleeve installed in the body, made with longitudinal grooves on the inner surface, and a worm mounted in the body with a rotation drive, characterized in that, in order to increase the productivity of the worm machine and the quality of the processed material by increasing the degree of homogenization, the longitudinal grooves on the inner / surface of the sleeve are _ made in the form of a number of sections, 59 married stepwise relative to each other on a helix.