SU841964A1 - Device for undercutting the protective sheaths of cable - Google Patents

Description

(54) DEVICE FOR CUTTING PROTECTIVE SHELLS

CABLE

I

The invention relates to electrical installation production, in particular, to devices for cutting cable sheathing. A device for notching Cable cable sheathing is known, comprising a housing with a cutting element mounted therein and a housing fixing unit relative to the cutting cable 1.

The disadvantages of the known device are its low productivity and the possibility of injuries to the hands of working personnel.

The purpose of the invention is to increase productivity and improve working safety conditions.

This goal is achieved by the fact that in a device for cutting cable sheathing comprising a housing with a cutting element mounted therein and a body fixing unit relative to the cutting cable, the latter is made in the form of plates mounted both sides relative to the cutting member and connected to the housing by means of a rotary axis with serrated.

To cut the protective shells around the circumference, the body fixing unit relative to the cable being cut is provided with a support with rollers installed in it with the possibility of adjusting movement, while the support is provided with means of fixing the position relative to the plates. FIG. I shows the proposed device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 - device with a longitudinal incision of the cable sheath; in fig. 4 is a view B in FIG. 3

Safety cutter

The cable sheaths comprise a housing 1 with a cutting element 2 mounted therein, mounted by means of a screw 3. The oval, opening of the knife 2 makes it possible to adjust the depth of cut. The fixing unit of the housing relative to the incised sheath of the cable 4 is made in the form of plates 5 with nuts 6 having right and left threads and coupled to the toothed cutting axis 7. The axis 7 is closed by a casing 8 attached to the pads 9 with screws 10. On the top of the casing grooves 11 are made through which locking screws 12 are screwed into the nuts 6.

Claims (2)

When turning the knob 13, the rotation in one direction or another of the plate 5, respectively, approach each other or the work flow. The locking screws 12, while moving in the slots II of the casing, do not allow the plates 5 to be rotated. In the plates 5, the cutouts are made in the shape of a semicircle (Fig. I) to accommodate the cable. On each plate there are symmetrically arranged holes 14 for mating with the pins 15 of the support 16. In the rectangular nest of the support 16 there is a slider 17 with two rollers 18 rotated on the axes 19. The slide 16 is moved with the help of a screw 20. The support 16 has figure cutout for cable passage. The device works as follows. In order to remove the cable sheath (e.g. aluminum), it is necessary to remove all the covers up to the sheath from the cable, and then make annular and longitudinal cuts on the sheath. In order to make annular cuts, it is necessary to spread the plates 5 by turning the knob 13 so that the pins 15 of the support 16 can pass between them. The screw 20 moves the slider 17 to the lower position. The tool is superimposed on the cable by semicircular cutouts of the plates 5, then the support 16 is applied, the pins of which are guided into the nearest holes 14 of the plates 5, after which the cheeks 13 move closer together, the pins 15 fully enter the holes 14 and are clamped. The possibility of matching the trunnions with any openings of the cheeks provides a tool with a cable of any diameter. Thus, the supporting attachment is rigidly mated to the base of the device. By rotating the screw 20, the slider 17, resting its rollers 18 on the cable 4, presses it against the blade of the knife 2 so that the knife hits the shell to the desired depth. When the whole tool is rotated around the cable, the knife 2 cuts the sheath around the ring. At the same time, depending on the thickness of the shell, you can wrap the tool several times around the cable, at the same time increasing the cutting depth of the knife with the screw 20. When the tool rotates, it rolls around the cable over the roller / roller to the rollers 18. For longitudinal cuts, the handle 13 of the plate 5 is separated so that so that between them can pass the cable. In this case, the support 16 is released and the cable is not involved in the longitudinal incision. Clamping the tool by the body 1 to the cable 4, move it from the annular notch to the end of the cable, and the tool can be pressed with almost any force without fear of a knife slipping, since the plates 5 completely exclude this. After making one cut, the tool is moved 10 mm to the side and a second cut is made. Depending on the thickness of the shell, it is possible to draw a knife several times along one notch line. Using pliers, the sheath strip between the two cuts is removed, the sheath is unrolled and removed from the cable. To adjust the knife, it is necessary through the hole, in lining 9, loosen screw 3, move knife 2 and tighten the screw again. To sharpen or turn the knife, unscrew the screw 3, slide the knife along slot 21 and remove it. The proposed device has high performance and safe in operation. Claims. 1. A device for cutting cable sheathing comprising a housing with a cutting element mounted therein and a housing fixing unit relative to the cable being cut, characterized in that; In order to increase productivity and improve safety conditions, the body fixing unit relative to the cable being cut is made in the form of plates mounted on both sides of the cutting element and connected to the body by means of a rotary axis with gear cutting. 2. The device according to claim. Characterized by IQH, in order to ensure the incision of the protective shell around the circumference, the node of the fixed case with respect to the cut cable is provided with a support installed with adjustable rollers, while the support is provided with means of fixing the position relative to the plates. Sources of information taken into account in the examination of US Patent No. 2,288,670, cl. 30-90.7, pub. 1942. (puij (rig. 2. figure 2 841964 (rie.