SU1640767A1 - Device for longitudinally slicing cable sheathings - Google Patents

Abstract

The invention relates to process equipment for removing protective sheaths of electrical cables and can be used for disposing of flat three-core electrical installation cables. The purpose of the invention is to expand the functionality by improving cutting conditions. The device comprises a housing 1 on which the guide rollers 2 and the knife 3 are mounted. The guide rollers are located on vertical parallel axes 4 and have angular grooves on cylindrical surfaces. The knife is made in the form of a vertical element 5 and a plow orientator b. The knife 3 is made with an inclined cutting edge 7. The plow orientator is made cone-shaped, with its tip facing away from the cable feed direction. Due to this design, the device allows cutting of the armoring metal sheath of the cable. 3 il.

Description

FIG. one

The invention relates to process equipment for removing the protective sheaths of electrical cables and can be used in electrical and other sectors of the national economy for the disposal of cables of electrical installations.

The purpose of the invention is to enhance the functionality of the device by providing a cut of the armored cable jacket and improving the cutting conditions.

FIG. 1 shows schematically a device with a partial section, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The device (Fig. 1) consists of a housing 1 on which the guide rollers 2 and the knife 3 are mounted.

The guide rollers are located on parallel vertical axes x 4 (Fig. 2). not fixed on the housing 1. Angular grooves are machined on the cylindrical surface of the rollers {FIG. 3).

The knife 3 (Fig. 3) is attached to the upper plate of the housing 1, the edges of the notch of which fit into the horizontal grooves in the upper part of the knife. The lower part of the knife consists of two mutually perpendicular flat elements 5 and b. One of which 5 is provided with a cutting edge 7 inclined towards the shuy orientor 6 at an angle s against the direction of movement of the cable. The plow orientator 6 is made expanding in the direction from the cutting edge to a value exceeding the width of the cable 8 to cutting it with the armoring sheath 9 and the cores 10, in order to drop the cut turns 11.

The device works as follows.

The end of the cable, which is cut for the utilization of its constituent elements, is deformed, giving it a diamond-shaped shape, in one zone of which the cable cores are concentrated and the other for the knife 3 with the cutting edge 7, as shown in FIG. 3. After inserting the knife 3 into the released zone of the deformed shell 9 (Fig. 1 and 3), mechanical pulling of the cable to be cut is started 3. When passing through the guides

The rollers 2 of the cable 8 are continuously deformed by their angular grooves into a rhomboid shape (Fig. 3). The reservation shell 9 is cut from the inside by the cutting edge 7 of the knife 3 by stretching. The coils 11 of the shell 9 are opened by the plow orientator 6 of the knife 3 until the gap between their ends exceeds 4 times the width of the cable before deformation and is discharged from

lived 10 of the latter through the cutout in the base of the housing 1 (Fig. 2) in the corresponding collection (not shown). Inclined inside the sheath of the cutting edge 7 of the cutting knife 3 creates cutting forces directed at an angle to the surface of the sheath (and not along it), and they stretch it (and not compress it) until it breaks. Therefore, the device allows cutting the metal armor sheath. Burrs

at the ends of the cut turns of the sheath, they are turned outward and they do not affect the insulation of the cable when they are dropped from the latter.

Claims (1)

Due to this design, the device makes it possible to use it to cut cables with a metal sheath. Apparatus of invention for longitudinal cutting of a cable jacket comprising a housing with a pulling ejector, characterized in that, in order to expand functionality by providing cutting of an armored cable jacket and improving cutting conditions, it is provided with guide rollers for fixing the cable, each of which is made with an angle a groove on the cylindrical surface, the rollers are installed with the possibility of moving relative to each other in a plane perpendicular to their axis, the knife is made with inclined cutting edge, plow orientator is made cone-shaped, with the tops the cone of the plow orientator and the angle of inclination of the cutting edge are directed in the direction opposite to the cable feed direction, the knife is located between the surfaces of the angular grooves of the guide rollers, and the plane of their axes intersects with the cutting edge of the knife. 2-4.