JPH01205913A - Cable cutting device - Google Patents

Abstract

PURPOSE:To carry out cutting, maintaining a high degree of roundness of the cut part of a cable without generating cutting chips by forming one cutting edge to a recessed form corresponding to the outside diameter of the cable and supporting the both cutters in the relatively shiftable manners by a cutter holding body. CONSTITUTION:A cable 50 is fitted into the recessed grooves 24a and 24b of the both supporting members 23a and 23b and into a cutting edge 31, and a cutter 30 is lowered in a prescribed direction by the movement of a piston 17 by the operation of a cylinder 18 and the guide through the guide grooves 19 and 20. Therefore, the cable 50 can be cut through the cutting edges 31 and 41 of the both cutters 30 and 40. Since, at this time, the both cutters 30 and 40 are held in the relatively shiftable manners, and one cutter 40 is formed into a recessed form corresponding to the outside diameter of the cable 50 to be cut, the formation of cutting chips in the shearing for the cable 50 can be suppressed, and a high degree of roundness of the cut part of the cable can be maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application 1 The present invention relates to a cable cutting device suitable for use in cutting various cables such as power cables and communication cables.

rPrior art J In general, cable cutting devices include ones equipped with a saw,
A cutting device equipped with a pair of cutters is commonly used, and in the case of a cutting device equipped with a saw, the cable is cut through a pull saw, a rotary saw, etc., and in the case of a cutting device equipped with a cutter, a pair of cutters is used. Shearing the cable through the cutter.

rProblem to be Solved by the Invention J The former of the above-mentioned conventional devices, that is, those equipped with a saw, generate a large amount of cutting dust when cutting the cable, and the cutting dust adheres to the cut surface of the cable and other parts.

Of course, these cutting dust are removed from the cable by cleaning after cutting, but it is not uncommon for some of the cutting dust to penetrate into the cable, resulting in insulation breakdown of the power cable or damage to the communication cable. Serious situations such as deterioration of transmission characteristics occur.

The latter of the above conventional devices, that is, those equipped with a cutter, do not have the problem of cutting dust like the former, but the cable cutting section (cut) deforms into an oval shape due to the load during cutting, and the cable end becomes almost impossible.

In view of the above-mentioned problems, the present invention aims to provide a cable cutting device that can cut a cable while maintaining the roundness of the cut portion without generating cutting powder.

Means for Solving the Problem J In order to achieve the desired objective, the cable cutting device according to the present invention is provided with a pair of blades, each of which has a cutting edge at its tip, and at least One of the blade edges has a pupil shape corresponding to the outer diameter of the cable to be cut, and the double blades are supported by a blade holder so as to be relatively movable with the blade edges facing each other in a staggered manner. It is characterized by

1 Effect J In the case of the cable cutting device according to the present invention, for example, the cable to be cut is fitted into the cutting edge, and then,
The double-edged tools are moved relative to each other in different directions, and the cable is sheared by the cutting edges of the double-edged tools.

At this time, since at least one of the cutting edges is recessed in accordance with the outer diameter of the cable, deformation of the cable due to shearing load is suppressed, and the cable is thus cut smoothly while maintaining its roundness at the cut section. is cut off.

Of course, when such cables are cut, there is no generation of cutting dust as seen in sawing.

Embodiment Embodiments of the cable cutting device according to the present invention will be described below.
This will be explained with reference to the drawings.

In FIGS. 1 and 2, 10 is a blade holder, and 3
0.40 is a pair of blades, 50 is 30 of these blades
．． The cable is cut through 40.

The cutter holder 10 is made up of a vertically long frame consisting of a lower substrate 11, an upper substrate 12, and left and right columns 13.14, and the framework includes pairs of guide members 15a, 15b, 18a,
IEib, a hydraulic or pneumatic cylinder 18 with a telescopic piston 17 is assembled.

The guide members 15a, 15b, IEia, 1[1b are connected to each other below the columns 13.14, respectively.
The guide members 13 and 14 are fixed to each branch office 13 and 14 with the guide members 13 and 14 sandwiched therebetween from the front and back, and the guide members 15a and 15b on one side and the guide members 16a and IBb on the other side face each other inwardly. Guide grooves 19,20 are formed.

The shifter 1st is arranged with the piston 17 facing downward between the two branch offices 13 and 14, and
．． It is suspended and supported at a predetermined position via support arms 21 extending between 14 and an upper substrate 12.

One of the blades 30 has an inclined cutting edge 31, and the blade 30 is attached to the tip of the piston 17 via a fitting 32 provided at its base, and both sides of the blade 30 are attached to guide grooves 19, 20. is engaged within.

The cutting edge 31 of the cutter 30 has an inclination angle of 45 degrees, for example.

The other blade 40 has a cutting edge 41 recessed corresponding to the outer diameter of the cable 50, and is disposed on the lower substrate 11 with the cutting edge 41 facing upward, and is attached to the guide members lea, 18b. The guide members 18a and 16b are fixed to the guide members 18a and 16b so that they are flush with the inner surface.

In such a knife 40, the width of the cutting edge 41 is B, and the depth is D.
, the radius of the circular surface is r, and the outer diameter (diameter) of the cable 50
When is d, B is approximately equal to d, D is greater than 1/2d, and r is approximately equal to 1/2d.

As described above, when the double-edged tools 30 and 40 are supported so as to be relatively movable via the cutter holder 10, these tools 30 and 40
．． The cutting edges 31, 41 of 40 face each other in a staggered manner.

In the figure, 22 is a piping connection port of the cylinder 18, and 23a
, 23b is a support member having grooves 24a, 24b on its upper surface.

As shown in FIG. 2, both support members 23a and 23b are attached to the front and rear surfaces of the lower substrate 11 with fasteners such as bolts, with grooves 24a and 24b facing upward, respectively.

When the cutting device according to the present invention has the above embodiment, the cable 50 is fitted over both the support members 23a, 23b (7) into the grooves 24a, 24b and the cutting edge 31,
Thereafter, the cutter 30 is lowered in a predetermined direction by the movement of the piston 17 in conjunction with the operation of the cylinder 18 and the guidance via the guide groove 19.20, and the cable 50 is thus
The cut is made via the cutting edge 31.41 of the double-edged tool 30.40.

In the case of the present invention, the cutter 30 may be fixed and the cutter 40 may be provided movably, or both the double-edged tools 30 and 40 may be provided movably.

In addition, not only the cutting edge 41 of the cutting tool 40 but also the cutting edge 31 of the cutting tool 30 may be formed in a concave shape.

"Effect of the Invention J As explained above, when using the cable cutting device according to the present invention, a pair of blades each having a cutting edge at the tip are held so as to be relatively movable, and one of the cutting edges of these double-edged blades is , at least one of the cutting edges has a concave shape corresponding to the outer diameter of the cable to be cut, so when cutting the cable, no cutting powder is generated and the roundness of the cable cut part is maintained. be able to.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of a cable cutting device according to the present invention, and FIG. 2 is a side view of the same. lO......Knife holder 11...Lower board 12...Upper board 13... - Strut 14... Strut 15a, 15b... Guide member 18a, 18b... Guide member 17... Piston 18... ...Cylinder 19, 20...Guide groove 21...Support arm 30...Cutter 31... ...Blade tip 32...Mounting tool 40...Blade 41...Blade tip 50... ...Cable agent Patent attorney Yoshio Saito Figure 2 11

Claims (1)

[Claims] The blades are provided with a pair of blades, each of which has a cutting edge at its tip, and at least one of the blade edges has a concave shape corresponding to the outer diameter of the cable to be cut. A cable cutting device characterized in that the cutting edges are opposed to each other in a staggered manner and are supported by a blade holder so as to be relatively movable.