SU1123846A1 - Apparatus for cutting coiled materials - Google Patents

Abstract

A DEVICE FOR CUTTING RU-, LONNY MATERIALS, containing a cutting knife with a pair of clamps, installed @ (on both sides of the knife, and supporting elements, characterized in that, in order to increase; nn reliability n cutting quality by imitating materials in the cutting zone, The supporting elements are made in the form of spring-loaded pivotal plates on the axes, installed symmetrically relative to the plane of the knife and at an angle to it, while the axes of the rotating plates are parallel to the plane of the clamps and n between the top angle formed by the planes of the rotary plates the blade, and the plane of the clamps, and the top of the specified angle is located in the plane of displacement of the sub-blade knife. (L to 00 4 4 CD

Description

The invention relates to cutting devices and can be used for cutting paper and cardboard in packaging machines for piles and roll products in the pulp and paper industry and other industries.

A device for cutting layered materials is known, comprising a movable knife with a pair of clamps installed on both sides of the knife, and supporting elements 1.

The disadvantages of the known device are the low quality and reliability of cutting materials that do not have rigidity, such as paper, cardboard, as well as other materials with similar physical properties.

The purpose of the invention is to improve the reliability and quality of cutting materials, for example, unrolled from rolls of paper and cardboard.

This goal is achieved by the fact that in the device for cutting rolled materials containing a movable knife with a pair of clamps installed on both sides of the knife and supporting elements, the elements are made in the form of spring-loaded rotary plates on the axis, installed symmetrically relative to the plane of the knife and at an angle to the axis of the rotary plates parallel to the plane of the clamps and located between the top of the angle formed by the planes of the rotating plates and the plane of the clamps, and the top of the specified angle is in the plane movement of the movable knife.

FIG. I shows a device for cutting roll materials in the initial position; in fig. 2 - a device for cutting in the working position (cutting material); in fig. 3 shows a view A in FIG. t; FIG. 4 is a view B of FIG. 3

The device for cutting the material fed from the roll comprises a movable knife 1 mounted in the housing 2 and fixed rigidly with screws 3. The knife guiding elements 4 are made in the housing 2.

The cutting edge 5 of the movable knife I is made sawtooth.

Guides 6 for clamps 7 are rigidly fixed on the housing 2 on its opposite sides (relative to the cutting plane). Compression springs 8 are mounted on the core parts of the clamps 7.

The mutual position of the clamps 7 and the cutting edge 5 of Izh I is adjusted and secured by a nut 9.

The supporting elements for the clamps 7 are made in the form of spring-loaded swivel plates 10 mounted on the axis x il symmetrically relative to the plane of the knife and at an angle to it.

The axis of the spring-loaded rotary plates 10 are parallel to the plane of the clamps and are located between the vertices of the angle, which form between the plane of the turning corners, and the plane of the clamps. The top c) | of the screed angle is located in the plane of movement of the movable knife.

The spring-loaded pivot plates 10 form between them a gap 12 for moving the knife 1 therein, the magnitude of which exceeds the thickness of the knife.

During the working stroke of the housing 2 with a knife I clamps 7 interact with spring-loaded rotary plates 10.

The drive of the rolling knife can be any.

The inclination of the spring-loaded pivot plates to the knife plane is adjusted by screws 13 mounted on the bearing supporting elements 14 of the stanium. Depending on the physical properties of the material being cut, its density on the working surfaces of the clamps and turntable plates, plates of carved material, polymeric materials, etc. can be provided.

The distance from the web of material 15 to the clamps 7 is less than the distance from the web of material to the cutting edge 5 of the movable knife I.

The housing 2 with the knife 1 fixed in it, under the action of a drive (not shown) performs a working stroke.

0 Clamps 7 at the same time raise the sheet of paper to the surfaces of the spring-loaded rotary plates 10 and, affecting the latter, unfold them around the axes 11 against the stop into the supporting bearing surfaces 14. At the same time, the strip of material fixed by the clamps 7 and the rotary plates 10 is pulled and certain stresses arise in it due to tension.

Upon further movement of the housing 2 springs are compressed clamps 7 move; along the guides 8. In this case, the cutting edge 5 of the knife 1 moves relative to the clamps 7 and, acting on the fixed strip of material, cuts it.

5 After cutting, the knife is returned to its original position, and the pivoting plates are closed to the stops by the action of springs and are set again at the required angle to the cut plane.

Then the feed cycle and cutting

repeats.

Fixing a localized section of the material in the cutting zone between the clamps and the spring-loaded rotating plates and the tension of this section allows you to reliably and efficiently cut the material.

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Claims (1)

DEVICE FOR CUTTING RU-, BODY MATERIALS, containing under the exit knife with a pair of clamps installed on both sides of the knife, and supporting elements, characterized in that, in order to increase the reliability and quality of cutting by tensioning the material in the cutting zone, supporting elements made in the form of spring-loaded rotary plates on the axes mounted symmetrically relative to the plane of the knife and at an angle to it, while the axes of the rotary plates are parallel to the plane of the clamps and are located between the apex of the angle formed by the planes of the rotary plates Astin, and the plane of the clamps, and the vertex of the specified angle is located in the plane of movement of the movable knife. figure 1