SU952785A1 - Machine for continuously cutting fiber - Google Patents

Description

The invention relates to devices for cutting fibrous materials and can be used in the production of glass plastics in the chemical, electrical and other industries.

A device for cutting fibrous materials is known that includes a cutting roll with knives and an elastic layer. Cutting takes place during the contact of the cutting edge of the knives with the elastic lining.

However, such a device requires the use of clamping devices to feed the fiber into the cutting area, to frequently change or regrind the cutting bodies and the elastic backing.

Closest to the invention to the technical essence and the achieved result is a device for cutting fibrous material, containing cutting with knives and clamping All-wheel drive 2.

. However, the pressing of the fiber in the known device is carried out by the mezzot by the surfaces of the pressure roll and the cutting roll, which leads to the impact of bending loads on the blades during the contact of the latter.

with fiber. The time of contact of the knives with the pressure roller is significant, which is important for the destruction of the pressure roll and knives.

The purpose of the invention is to extend the life of the device.

This goal is achieved by the fact that in a device for continuous, cutting fiber containing cutting

10 with knives and a pressure roll, the drive, the cutting roll is covered with an elastic layer in which the knives are flush mounted, and the pressure roll is made with the slots of the bottom of the knives.

15

FIG. 1 shows the kinematic scheme of the proposed device; in fig. 2 shows the structure of the cutting and pressure rolls, a partial section; in fig. 3 - cutting position

20 elements of the cutting roll relate to the grooves of the pressure roll.

Claims (2)

The proposed device contains cutting 1 and clamping 2 lugs, mounted respectively fixed 3 and fixed 4 shafts. To synchronize the rotation of the rolls, serve as the bottom of a pair of bevel gears 5, 6 and 7.8. Between the bevel pairs on spring 9 there is a spring 10 that holds 30 bevel gear 6 in constant engagement with the bevel gear 5. On the shaft 9 there is a pulley 11, which through the belt drive 12 and the pulleys 13 are kinematically connected with the drive 14, the shaft 3 is mounted in the housing 15 with the possibility of reciprocating movement by means of the screw 16 and the handwheel 17; the cutting roller consists of two discs 18 and a ring 19 interconnected into one block of wines TaNM 20. Int. discs mounted elastic ring 21, resting on the surface of the ring 19. Knives 22 are installed in the slot 29 of the elastic ring 21 and supported in slots 24 on the disks 18. From the radial displacement of the knives 22 are protected by wire rings 25, laid in the annular grooves 26 of the disk 18. The cutting roller 1 is connected to the shaft 3 by means of a key 27, washers 28 and nuts 29. The pressing roller 2 contains two Disks 30 and a rigid ring 31 connected in one block with screws 20. The ring 31 has grooves 32 with a pitch equal to the pitch of the knives 22 the cutting roll 1. The presser roll 2 is connected to the shaft 4 The key is 27, washers 28 and nuts 29. The device operates as follows. When rotating vgsha 9, shafts 3 and 4, through conic pairs 5, 6 and 7, 8, receive rotation opposite to each other. The fiber 33, initially filled manually between rollers 1 and 2, is pressed between the surfaces of the rings 21 and 31 and moves to the zone of the smallest distance between the centers of the rolls 1 and 2, then the stiff ring .31 of the pressure roll 2 deforms the elastic ring 21 of the cutting roll 1 , while the edge of the knife 22 enters / into the groove 32. Since the fiber is fixed between the surfaces of the rings 21 and 31 due to shear, and the knife 22 of the cutting roll 1, the entrance to the groove 32 of the pressure roller 2 continues to stretch the fiber, then on the edge of the knife the destruction of the latter occurs. The proposed structural arrangement of the device allows to simplify the design and improve the performance characteristics of the knives, since the load on the latter during operation increases smoothly as the elastic layer deforms, due to which the fiber is pressed and moved without an additional pressure roller. Claims device for continuous cutting of fiber, containing cutting with knives and pressure rolls, drive, characterized in that, in order to prolong the service life of the device, the cutting roll is covered with an elastic layer in which knives are fitted flush, and the pressure roll is made with knife grooves . Sources of information taken into account during the examination 1. USSR author's certificate No. 595262, cl. SOZ B 37/16, 1976. 2. USSR author's certificate number 551270, cl. From 03 To 37/10, 1975. " / J / -, "