RU2277469C1 - Waste products of fibrous materials cutting apparatus - Google Patents

Abstract

FIELD: apparatuses for cutting waste products of fibrous materials, namely disintegrating waste products of cloths, film polyethylene, fiber reinforced elastic polymers and so on.

SUBSTANCE: apparatus includes receiving hopper for charging material, frame supporting plate provided with port in means part, cutting organ in the form of cutter drum and cutters. The cutters of cutter drum are in the form of square and they have toothed peripheral profile. Central cutters are combined in pair and one of them is turned relative to other by angle 90°. Apparatus includes unit for adjusting working gap between square-shaped cutters and cutters. Feeding unit is in the form of conveyer with elastic toothed belt. Cutter drum is provided with flywheel.

EFFECT: simplified design, enhanced operational characteristics and reliability, improved efficiency of apparatus.

2 cl, 3 dwg

Description

The invention relates to a device for cutting waste fiber materials, in particular grinding waste tissue, film polyethylene, fiber reinforced elastic polymers, etc.

A device for grinding fibrous materials is known, comprising a bed, a spring-loaded knife mounted in the guides of the bed, and an electromagnet, the anchor of which is mounted on a spring-loaded knife, and the winding is connected through the control unit to an AC source, while in order to expand technological capabilities and reduce energy intensity, equipped with a drum mounted on the bed with the possibility of rotation and interaction with a spring-loaded knife, while the axis of rotation of the drum is offset relative to the plane ne emescheniya knife cutting edge in a direction opposite to the feeding direction of the material, and the sharpening of the knife is formed by the feed material to be ground (see. auth. binding. №1479266, 4 B 26 D 5/06, BI №18, 1989).

Signs matching - contains a bed, a knife.

The reasons that impede the task are insufficient reliability at low productivity, complexity and inconvenience in operation due to the use of a spring-loaded knife mounted in the bed guides, there is the possibility of jamming during the grinding of the material, especially when the knife is dull, which necessitates its frequent regrinding.

A device for cutting waste fibrous materials, including a receiving hopper for loading material, a feed unit and a cutting body, and to increase the degree of grinding of the material by cutting it in the longitudinal and transverse directions, it is equipped with a set of pins mounted across the receiving hopper and made with cutting edges from the loading side of the material (see ed. St. No. 1178709, C 03 B 37/16, B 26 D 5/06, BI No. 34, 1985).

Signs that match - receiving hopper for loading material, cutting body, feed unit.

The reasons that impede the task are low productivity and operational efficiency, insufficient reliability of the device.

As the closest analogue, the known device for chopping fiberglass waste is adopted, containing a frame with a plate installed on it, in the middle part of which there is an opening, a hopper, a cutting body made in the form of a knife drum, a clamping shaft with an elastic coating and pins, in order to increase performance and reliability, it is equipped with knives-limiters installed in the plate opening and placed parallel to one another relative to the other, and the pins are mounted on the clamping shaft along a helical line, placed between the knife mi-limiters, and their end sections are located above the cutting edges of the limiter knives, while they are made with a cross section in the form of an isosceles trapezoid, the smaller base of which is located on the side of the clamping shaft, and the cutting edges are formed by the intersection of the sides with a large base, and the hopper mounted on a plate with the possibility of reciprocating movement relative to the longitudinal axis of the plate opening at an angle of 15-45 ° (see author St. No. 1303406, 4 B 26 D 1/14, BI No. 14, 1987).

Signs that coincide - the presence of a frame with a plate installed on it, in the middle part of which an opening is made, a hopper, a cutting body made in the form of a knife drum and knives parallel to them.

The reasons that impede the task are the lack of reliability due to the use of limiter knives and pins mounted on the clamping shaft, which can lead to jamming of the device during grinding of the material, especially when blunt drum knives, which entails the need for frequent regrinding, low productivity.

The objective of the proposed invention is to simplify the design, increase the reliability, performance and operational characteristics of the device for cutting waste fiber materials.

The technical result consists in the fact that in the device for cutting waste fibrous materials, including a receiving hopper for loading material, a frame with a plate mounted on it, in the middle part of which an aperture is made, a cutting body, which is made in the form of a knife drum and knives, and knives the knife drum is made in the form of a square, have a serrated profile on the periphery, while the central knives are paired and rotated 90 ° relative to each other, further comprises a knot for adjusting the working gap between the knives, and a knot for chi is designed as a conveyor with a flexible toothed belt, and the cutter drum 4 is equipped with a flywheel 9.

This design and arrangement of knives allows you to effectively grind fibrous materials to a predetermined value and provides high productivity, increase the time between knife regrindings, while the knives are shifted along the planes, the working gap between the knives is easily adjusted, the possibility of jamming and seizing is reduced, which increases the reliability of the device .

The proposed device for cutting waste fiber materials is illustrated in the drawing, where Fig. 1 shows a sectional view of a device, Fig. 2 is a section A-A of Fig. 1, Fig. 3 is a section B-B of Fig. 1.

A device for cutting waste fiber materials, including a receiving hopper 1 for loading material, a frame 2 with a plate 3 mounted on it, in the middle part of which an aperture is made, a cutting body made in the form of a knife drum 4 and knives 7, and the knife drum 4 consists of knives 5, made in the form of a square having a serrated profile along the periphery, while the central knives are paired and rotated 90 ° relative to each other, further comprises an adjustment unit for adjusting the working gap 6 between the knives 5 and 7, and the feed unit 8 is made in the form of a trans sportor with an elastic gear belt, and the knife drum 4 is equipped with a flywheel 9.

The device operates as follows: a receiving hopper 1 is mounted on the frame 2 for loading material, a plate 3 is installed, in the middle part of which an aperture is made, a cutting body is mounted in the form of a knife drum 4 and knives 7, the knife drum 4 includes knives 5 fixed thereon made in the form of a square having a serrated profile on the periphery, while the Central knives are paired and rotated one relative to the other by 90 ° (figure 2). The knife drum 4 is driven into rotation by a drive (not shown), the working gap is provided by the adjustment unit of the working gap 6 between the knives 5 and 7. The working gap is the distance between the knives in the form of a square 5 and the knives 7 - h.

The knife 7 is a plate, on the lower side of which there is a protrusion placed on the plate 3, and has the ability to move in the direction of the axis of the knife drum through the adjustment unit of the working gap 6 between the knives. The knot for adjusting the working gap 6 between the knives represents a simple structural solution and is implemented as follows: the protrusion on the lower part of the knife 7 has holes in which pivotally mounted, without the possibility of axial movement, adjusting threaded elements are connected with their threaded part to threaded holes made in the protrusions of the plate 3 (figure 1). When these adjusting threaded elements rotate to one or the other side, the knives 7 move along the axis of the knife drum, and the gap between the knives 7 and the knives in the form of a square 5 changes. From the axial movement in the openings of the knives 7, the adjusting threaded elements can be fixed, for example, with a locking ring , and from self-unscrewing - lock nut (figure 3).

Further, the material to be crushed is fed into the hopper 1 for loading material, which is transmitted through the feed unit 8, made in the form of a conveyor with an elastic toothed belt, to the cutting zone - to the central paired knives 5, made in the form of a square, with a serrated profile along the periphery, and interacting knives with them 7. In this case, due to the design of the knife drum, namely the square-shaped knives having a serrated profile along the periphery, the material is tensioned to some extent during the cutting process.

For example, while the tooth of an extreme knife in the shape of a square 5 cuts (located in the cutting zone, which is provided by the gap between the knife 7 and the knife in the shape of a square 5), the tooth of one middle knife in the shape of a square 5 pulls the material to enter the cutting zone, the process proceeds with alternating, since it cuts one, then the other central knife in the form of a square 5.

Single knives 5, located at the edges of the device, cut off the material that has shifted beyond the feed unit 8. Equipping the knife drum 4 with the flywheel 9 further improves the dynamics of cutting.

The size of grinding is determined by the distance between the central and side knives 5, and high productivity is ensured by the speed of rotation of the knife drum 4 and the proposed design of the knives 5. The device allows you to grind the waste of various fibrous materials, fabrics, film polyethylene reinforced with fibers of elastic polymers, with high performance and reliability with simple and convenient maintenance and operation, which are provided by the regrinding of knives on planes and the adjustment of p bochego gap.

Claims (2)

1. Device for cutting waste fiber materials, containing a receiving hopper for loading material, a frame with a plate mounted on it, in the middle of which an aperture is made, knives and a cutting body in the form of a knife drum, characterized in that the knife drum is made with knives in the form square, which have a serrated profile on the periphery, while the Central knives of the knife drum are paired and rotated one relative to another 90 °, further comprises a node for adjusting the working gap between the knives and knives of the knife drum, and the feed unit is made in the form of a conveyor with an elastic gear belt. 2. The device according to claim 1, characterized in that the knife drum is equipped with a flywheel.

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