SU1388154A1 - Arrangement for separating material - Google Patents

Abstract

The invention relates to the processing of plastics and can be used in engineering for the recycling of plastics. The purpose of the invention is to increase reliability with discrete batch feeding of material into the cutting zone. The device contains a cut-off mechanism 1 consisting of a cylinder 2, a movable knife 3, interacting with a fixed knife 4, a movable plate 5 with an adjustable stop 6 of the feeding step, an actuator 7 of the feeding element. The latter consists of a rack (8) mounted in a fixed sleeve 9 and meshed with gear 10. On one shaft with gear 10 an overrunning clutch 11 is installed, the gear ring of which is connected to the lead screw 12 via a converting mechanism. Screw 12 installed in the feed element nut 13. In the axial bore located in the lower part of the RR 3, there is a return spring, the lower part of the axial bore is closed with a nut. In the axial guide hole of the nut, there is a spring-loaded brush. 2 Il. S (l

Description

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The invention relates to the processing of plastics and can be used in engineering for the recycling of plastics.

The purpose of the invention is to improve the reliability of the device by simplifying the design of the drive when batch feeding the material into the work area.

FIG. 1 shows a device for separating material, a general view; in fig. 2 is a section A-A in FIG. one.

The device for separating the material includes a cut-off mechanism 1 consisting of a cylinder 2, a movable knife 3 interacting with a fixed knife 4, a movable plate 5 with an adjustable stop 6 of the feeding step, an actuator 7 of the feed element consisting of a rack 8 installed in a fixed the sleeve 9 and the engaging gear 10. The overrunning clutch 11 is installed on the same shaft with the gear 10, the gear ring of which is connected with the screw screw 12 via a converting mechanism. The screw 12 is installed in the nut 13 of the feed element. In the axial hole and the rack 8 is spring 14 return. An axial bore b is located in the lower part of the toothed rack 8, the lower part of which is closed by a nut 15. In the axial guide hole of the nut 13 a rod 16 is located, spring-loaded with a spring 17.

The device works as follows.

During the course of the mechanism 1, the segments with the movable knife 3 up from the fixed knife 4, the rod of the hydraulic cylinder 2, and with it the movable plate 5 move upwards. Adjustable stop 6 acts on the rod 16, moves it together with the rack 8 up, compressing the spring 14 return. A toothed rack 8 via gear 10, an overrunning clutch 11 and a conversion mechanism transfers the rotation to the screw 12, which when

the help of the nut 13 moves the feed element to the cutting zone by one step.

When lowering the movable plate 5 (cutting), the adjustable stop 6 moves away from

the rod 16 of the rail 8, the return spring 14 lowers the gear rail 8, while the gear 10 rotates, the overrunning clutch 11 is wedged, and the transforming mechanism together with the screw 12 remains stationary.

In the case of jamming of the feed element with the nut 13, the upward movement of the rack 8 becomes impossible. In this case, the adjustable stop 6 of the movable plate 5 moves the rod 16 by the amount of travel in the guide nuts 15 upward, compresses the spring 17, and thereby prevents the mechanism from breaking. The force of the spring 17 is chosen so that in normal conditions of operation it is not compressed, the deformation of the spring 17 is carried out only in

emergency situations.

Claims (1)

Invention Formula A device for separating a material, comprising a cutting mechanism and a material feeding mechanism into the cutting zone, including a reciprocating drive, a movable gear rack with a return spring located in its axial bore, a conversion mechanism associated with the rack, a feed element characterized by that, in order to increase reliability, it is equipped with an additional spring and a brush installed in the axial bore of the toothed rack, while the brush is mounted with the ability to interact with the return drive translational movement, and the transforming mechanism is made in the form of an overrunning clutch, a screw connected to the overrunning clutch, and a nut attached to the feed element with the possibility of interaction with the screw.