SU825314A1 - Plasticizer for fibrous materials - Google Patents

Description

The invention relates to the processing of thermosetting fibrous thermoset formations by pressing. A plastikator for thermosetting materials is known, which contains a stanina, a physical cylinder, a screw worm, connected to a rotary drive, a loading bin l. The disadvantage of this plasticator is that it provides processing only bulk materials and does not allow processing of fibrous materials. The closest in technical essence to the present invention is a plasticizer for fibrous materials, comprising a bed, a material cylinder, a screw-hole connected to a rotational drive, and a loading hopper with a feeder mounted to form a material 2 between the end face and the screw of the chamber. A disadvantage of the known plasticiser is the insufficient intensity of processing of fibrous materials, which is caused by their uneven feeding from the loading buffer to the material cylinder, freezing of the material in the loading hopper, and its sticking on the feeder. The purpose of the invention is to intensify the processing of fibrous materials. This goal is achieved by the fact that in a plasticizer for fibrous materials containing a bed, a material cylinder, a screw worm connected to a rotational drive, and a hopper with a feeder mounted to form materials between it and the screw of the precompression chamber, in a housing that has horizontal surface areas, two drive bogus screws, whose longitudinal axes are located in a horizontal plane, and the hopper is equipped with return retractors its movement in the direction perpendicular to the longitudinal axis of the feed screw. In addition, feed screws mounted protruding above the horizontal sections of the housing. FIG. 1 shows a kneader, for fibrous materials, the general view / in FIG. 2 is a view A of FIG. 1; on,

FIG. 3 is a section b-B in FIG. 2; in fig. 4 shows a section B-B in FIG. 3

The plasticizer for fibrous materials contains a bed 1, a material cylinder 2, a screw to 3, connected to a rotational drive 4, a hopper 5 equipped with a drive 6 (FIG. 3) to return its accessible movement along guides (Fig. 4) between limit switches 8 , and a feeder, made in the form of two surfaces connected to the housing 9 having horizontal sections D and D of the surface and two cantilever feed screws 11 connected to the drive 10, whose longitudinal axes are located in the horizontal plane. The feed screws 11 of the feeder are mounted to form precompression materials between their ends and the screw 3 of the chamber 12. In addition, they are mounted protruding above the horizontal sections of the D and D corps 9 on the value of h 30-40 mm. The side walls of the loading hopper 5 are located with the expansion in the direction of the screws 11 (fi-g4),

Plasticizer for fibrous press materials works in the following manner.

The fibrous press material in the form of small bundles of fibers is poured into the hopper 5, which from the actuator 6 along the guides, 7 moves reciprocatingly above the horizontal sections D and D of the housing 9 with a gap of 1-2 mm. The movement is limited by the limit switches 8. The moving feed hopper 5 supplies new portions of material to the auger feeder screws 11, which are installed above the horizontal sections of the body 9 by 30-40 mm, which ensures a good grip on the material by the feeding augers. 11. The horizontal arrangement of the longitudinal axes of the auxiliary screws 11 ensures reliable material intake from the hopper 5. The side walls of the hopper 5 extend downwardly, completely eliminating the hang of the material. Suction screws 11 transport the material to the pre-compression chamber 12, which is a compensator, where

The material is pre-compressed between the auxiliary screws 11 and the screw 3 of the plasticizer. If there is an excess supply, the excess fiber is fed into it, and in case of interruption of supply from the outside, the presence of material in the pre-compression chamber 12 ensures its constant supply to the plasticizer. Next in the material cylinder 2, the process of plasticization and the issuance of tablets of a given weight and density.

The use of the proposed plasticiser allows to intensify the processing process, improve the accuracy of dosing of fibrous press materials, shorten the durability of the material in the mold during pressing, reduce material consumption and reduce equipment wear.

Claims (2)

1. Plasticizer for fibrous materials containing a frame, a material cylinder, a worm to, connected to a rotating drive, and a hopper with a feeder mounted to form a precompression chamber between it and the worm, characterized in that, in order to intensify the processing fiber materials, the feeder is made in the form of two drive feed screws placed in a housing having horizontal surface areas, the longitudinal axes of which are arranged in a horizontal plane, and The loading bunker is equipped with a drive for its reciprocating movement. in the direction perpendicular to the longitudinal axis of the feed screw. 2. Plasticizer according to claim 1, about t l ich auschi and with the fact that the feed screws are mounted lining above the horizontal sections of the body. Sources of information taken into account during the examination 1. USSR author's certificate No. 636098, cl. B 29 B 1/06, 1976. 2.-US Patent No. 3746315, cl. 25921, published. 1973 (prototype). 5-5 S ui.lt