JPH0623380Y2 - Conductor cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a conductor cutting device for cutting a conductor of an ultra-high cable or the like.

[Technical background of the invention and its problems] For cutting the ultra-high cable, a push-cut type cutting device as shown in FIGS. 2A and 2B is used so as not to generate chips during cutting. This cutting device has a C-shaped frame structure 1.
And a support handle 2 provided so as to project from the lower end thereof to the outside of the frame 1, and a boss portion 1a at the upper end of the frame 1 that is screwed into the upper end of the frame 1 so that the support handle 2 is aligned with the axis. The operation screw 3 screwed together, the fork 3a axially restrained by the lower end of the operation screw, freely engaged in the rotation direction and axially slidably supported by the boss 1a, and the fork 3a. A disk-shaped cutter 4 rotatably supported on the lower end of 3a about an axis perpendicular to the fork sliding direction, and a large-sized cutter provided on the inner surface of the lower end of the frame 1 on both sides of the cutter 4. A pair of pressing rollers 5 each having a diameter portion 5a and facing each other.
Have and. An operating handle 6 is attached to the operating screw 3.

The cutting operation is performed as follows. First, the operating screw 6 is rotated by the operating handle 6 to separate the conductor of the cable to be cut between the cutter 4 and the pressing roller 5 as much as necessary. Next, the conductor is engaged between the two, and the operating screw 3 is rotated again to sandwich the conductor between the two and cause the cutter 4 to bite into the conductor. Here, the operation handle 6 and the support handle 2 are gripped, and the entire cutting device is rotated around the conductor. As a result, a circumferential notch having a depth corresponding to the depth of the cutter 4 is formed. When one cut is completed in this way, the cutter 4 is again bited into the conductor by the operation handle 6, and the cutting device is rotated again to form the next cut groove. Hereinafter, the above operation is sequentially repeated to cut the conductor.

By the way, in the above-mentioned conventional cutting device, the size of the entire device is determined by the diameter of the disk-shaped cutter. The diameter of the conductor that can be cut is determined by the radius of the disc-shaped cutter 4, more precisely, the size of the portion of the cutter 4 outside the fork 3a. Therefore, a large-diameter cutter is required to cut the large-diameter conductor, and accordingly, the size of the entire device becomes large, which makes the handling inconvenient.

[Object of the Invention] The present invention was made in view of the above circumstances, and an object thereof is to provide a conductor cutting device capable of cutting a large-diameter conductor and capable of being constructed in a small size. There is.

[Means for Solving the Problems] A conductor cutting device according to the present invention includes a C-shaped frame structure, a boss portion at one end of the frame structure, which is rotatably and axially constrained and supported by an internal thread. A tubular operation shaft, a screw shaft screwed to the operation shaft, and an end of the screw shaft rotatably supported about an axis perpendicular to the screw axis, and spaced apart in the axial direction. A cutter having a single cutting blade, a pair of guide rollers having two large diameter portions axially separated from each other and symmetrically supported on the inner surface of the other end of the frame with respect to the screw axis, and at one end And a pair of clamps attached to the conductors to be cut with the small diameter portions facing each other.

[Advantage of the Invention] In the conductor cutting device of the present invention having the above-mentioned configuration, the two cutting blades cut the conductor wire when the conductor is cut, so the cut wire falls into a small piece, and the cutting resistance is increased. As the conductor at the cut site reduces its diameter. Therefore, a large-diameter cutter can cut a large-diameter conductor. Moreover, since the cutter has a small diameter, the size of the entire apparatus can be reduced.

[Embodiment of the Invention] FIG. 1A in which the same parts as those in FIGS.
1 is a front view of an embodiment of the present invention, FIG. 1B is a side view thereof, and FIG. 1C is a side view showing a part of it in an enlarged manner. In these figures, a thrust bearing 10 and a radial bearing 11 are provided in the boss drawing 1a. These bearings 10,
A cylindrical operation shaft 12 having an internal thread engraved in its inner cavity is supported by 11 on the boss portion 1a. Are screwed together. Also, on the inner surface of the lower end of the frame structure 1,
Two guide rollers 15 are provided symmetrically with respect to the screw axis. In addition, two large diameter portions 15a are provided near both ends of each guide roller 15 with an axial distance larger than the axial dimension of the cutter 13.

Further, prior to the cutting of the conductor 16, the conductor 16 is provided with two clamps 1 having a small-diameter portion 17a on one end surface and having a two-divided configuration.
The small diameter parts 17a are opposed to each other, and the step parts of the small diameter parts 17a are engaged with each other with a distance between the outer surface parts of the large diameter parts 15a of the respective guide rollers 15.

As shown in FIGS. 1A and 1C, the cutter 13 has a dish shape in which both ends of a cylindrical body are projected and the end faces are smooth, and a cutting edge 13a having a double-edged blade surface is provided on the outer periphery, and a bearing at the lower end of the screw shaft 14 is provided. Part 18
It is rotatably supported by. Further, a pin 18a is projected and hung at the center of the lower end of the bearing 18 between the cutting blades 13a.

Note that reference numeral 19 in the drawing denotes a clamp gripping handle.

The conductor 16 is cut by the cutting device of the present invention having the above-described structure as follows. First, the two clamps 17 are engaged with the cutting portion of the conductor 16 as described above, and then the C-shaped frame structure 1 as in the conventional cutting device.
Are engaged with the conductor 16. At this time, each guide roller 15
The large-diameter portion 15a is engaged with the small-diameter portion 17a. here,
The operation shaft 12 is rotated by the operation handle 6, and the screw shaft 1
4 is screwed to clamp the conductor 16 between the guide roller 15 engaged with the clamp 17 and the cutter 13, and the cutter 13 is bitten into the conductor 16. After that, the conductor 16 is cut by a procedure similar to that in the above-described conventional cutting device while the conductor 16 is orientated by the clamp gripping handle 19. After the cutting is completed, the clamp 17 is removed.

In the cutting device of the present invention having the above-mentioned configuration, the cutting is performed by the cutter 13 having the two cutting blades 13a axially separated from each other, and the pin 18a provided at the lower end of the bearing 18 is used to remove the cut strands. Therefore, as shown in FIG. 1D, the cut wires of the conductor 16 become small pieces 16a and fall, and as the cutting progresses, the cutting edge 13 of the conductor 16 is cut.
The part between a has a small diameter. Therefore, even if the cutter 13 has a small diameter, a large-diameter conductor can be cut.

The present invention is not limited to the above embodiment. For example, a small piece 1 in which the strands that make up the conductor are cut sufficiently thick
If 6a can fall by its own weight, the pin 18a can be omitted as shown in FIG. 1E.

[Effect of the Invention] As is clear from the above, in the cutting device of the present invention,
Since a large diameter conductor can be cut with a small diameter cutter, even a large diameter conductor can be cut into a small size and is easy to handle. Further, since the large diameter portion of the pair of guide rollers and the small diameter portion of the pair of clamps are engaged with each other, the cutter rotates around the conductor steadily and smoothly, so that the conductor is cut with good workability. It can be performed.

[Brief description of drawings]

1A is a front view of an embodiment of the present invention, FIG. 1B is a side view thereof, and FIG. 1C is a partially enlarged side view of the first embodiment.
FIG. D is a schematic diagram for explaining a cutting state in the above embodiment, FIG. 1E is a schematic diagram for explaining a cutting state in another embodiment of the present invention, and FIG. 2A is a conventional conductor cutting device. And FIG. 2B is a side view thereof. 1 ... Frame, 1a ... Boss, 2 ... Support handle, 3
…… Operation axis 3a …… Fork 4 …… Cutter 5,1
5 ... Guide roller, 6 ... Operating handle, 10 ... Thrust bearing, 11 ... Radial bearing, 12 ... Operating shaft,
13 ... Cutter, 13a ... Cutting edge, 14 ... Screw shaft, 1
5a ... Large diameter part, 16 ... conductor, 17 ... clamp, 1
7a ... small diameter part, 18 ... bearing, 18a ... pin, 19
...... Clamp grip handle

Claims (1)

[Scope of utility model registration request] 1. A C-shaped frame structure, a cylindrical operation shaft rotatably supported by a boss portion at one end of the frame structure and supported by being axially constrained and having an internal thread in its inner cavity, and this operation shaft. A screw shaft that is screwed into the shaft, a cutter that is rotatably supported at the end of the screw shaft about a shaft perpendicular to the screw shaft axis, and has two cutting blades that are axially separated from each other; A pair of guide rollers symmetrically supported on the inner surface of the other end of the frame structure with respect to the screw axis, and a small diameter portion engaged with the large diameter portion at one end. And a pair of clamps mounted on the conductor to be cut with the small diameter parts facing each other.