JP2002028385A - Cable pressing band cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable pressing band cutter that can cut a cable oppressing band without damaging the core of a cable and remove the cable pressing band from the core. SOLUTION: The cable pressing band has an edge 22 for cutting a cable pressing band 3, a shaft 34 connecting the edge 22 to the tip side, a grip portion 38 disposed on the base end side of the shaft 34 and covering the periphery of the shaft 34, and a protective section 24 covering the edge 22. The protective section 24 has a core pressing section 26 on the outside of the edge 22 and a cut 28 from one end of the core pressing section 26 to the interior, and exposes the edge 22 in the cut 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable retainer winding cutting tool for cutting a cable retainer wound around a core portion of a cable and removing the cable retainer from the cable.

[0002]

2. Description of the Related Art In general, a cable has a shape in which a core portion made of an optical fiber or the like is covered with a sheath such as a resin. A cable retainer made of vinyl, paper, or the like is interposed between the core portion and the outer cover for the purpose of waterproofing the core portion. When such cables are connected to each other or when the cables are branched, it is necessary to remove the outer sheath of the cable and a necessary portion of the cable retainer from the cable to expose the core portion.

In order to expose the cable core,
It is necessary to first remove the outer skin and then remove the outer skin to remove the exposed cable retainer. Conventionally, when the outer skin is removed, the outer skin is peeled off using a dedicated tool for peeling the outer skin, such as a cable outer stripper or a cable outer blade. Then, the exposed cable retainer winding is cut using a general cutting tool such as a nipper or a knife to expose the core portion of the cable.

[0004]

However, there have been the following problems in the prior art. Cutting tools such as knives and nippers have blades exposed to the outside. For this reason, there is a problem that, when cutting the cable retainer winding, there is a possibility that the core part wound on the cable retainer winding is cut to damage the core part or to injure an operator. Was. Further, since the cable presser winding is made of special processed paper or the like, there is a problem that it is difficult to cut with a general cutting tool.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art, and to cut a cable retainer without damaging the cable core, and to easily remove the cable retainer from the core. An object of the present invention is to provide a cable hold-up cutting tool.

[0006]

In order to achieve the above-mentioned object, a cable holding and winding cutting tool according to the present invention has a grip portion having a mounting portion for mounting a blade, and an edge of the blade provided on the mounting portion. A protection portion surrounding the portion, a cutout portion formed by cutting out the protection portion, and exposing a part of the edge portion of the blade, and a cable holding winding provided in the vicinity of the cutout portion. When inserted,
And a core holding part that is brought into contact with the core part.

Further, the blade may be formed in a substantially circular shape, and may be detachably mounted on the mounting portion.

[0008] The protection portion may be configured such that at least one pair of the core wire holding portion and the cut portion are formed symmetrically with respect to a center line of the protection portion.

[0009]

In the above construction, the necessary portion of the cable retainer is removed as follows. At the time of the cable holding winding cutting operation, a necessary part of the cable is stripped off with a dedicated tool or the like, and the cable holding winding is exposed at the stripped portion. Insert the tip of the cutout of the protective part into the exposed edge of the cable retainer winding. The portion of the cable retainer into which the tip of the cut is inserted is lifted by the cut. Then, the core wire holding portion is brought into contact with the surface of the core wire portion in the cable holding winding, and the core wire holding portion is moved along the surface of the core wire portion. Thereby, the cable retainer inserted into the cut portion is guided by the edge portion of the blade exposed in the cut portion, and cut by the edge portion of the blade. At this time, since the core wire holding portion is in contact with the core portion, there is no possibility that the core portion of the core portion is caught and cut or pressed. By moving the cable presser winding cutting tool such that the core presser portion is along the surface of the corerer portion, the cable presser winding can be continuously inserted and guided in the cut portion to perform a cutting operation. With this configuration, the cable presser winding can be cut off without damaging the cable core, and the cable presser can be easily removed from the core. Further, since the edge portion of the blade is not exposed to the outside, safety in operation can be ensured. In addition, the method of cutting the cable retainer may be such that the cable retainer is cut in an appropriate direction according to the type of the cable, the method of winding the cable retainer, the material, and the like.

In the case where the blade is formed in a substantially circular shape and is detachably attached to the mounting portion, after the blade is removed from the mounting portion, the blade is rotated by a predetermined angle, and the blade is attached to the mounting portion again. Thus, the edge portion of the blade exposed from the cut portion can be easily changed. Accordingly, even when the edge portion of the blade exposed in the cutout loses the cutting function due to long-term use or the like, the blade can be attached to the mounting portion so that the undegraded edge portion is exposed. For this reason,
Even if the cutting function is lost due to the deterioration of the exposed edge portion of the cable holding and winding cutting tool, the cutting function can be easily recovered. In this way, the edge portion of the blade can be used over the entire circumference, so that it can be used for a long time without waste in terms of cost.

[0011] Further, when the protective part is formed with at least one pair of the core wire holding part and the cut part symmetrically with respect to the center line of the protective part, even if the worker is right-handed, it can be left-handed. In both cases, the cutting operation can be performed by the dominant hand. For this reason, a cutting operation can be performed without giving an uncomfortable feeling to the operator.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a cable holding and cutting tool according to an embodiment of the present invention. Figure 1
FIG. 2 is a front view of the cable press winding cutting tool 20 according to the embodiment. FIG. 2 is a sectional view of the cable retainer winding cutting tool 20 as viewed from the direction of AA 'in FIG. FIG. 3 shows B in FIG.
It is a side view of the cable press winding cutting tool 20 seen from the B 'direction.

The cable holding coil cutting tool 20 has a circular blade 22.
have. The center of the circular blade 22 is opened to be fixed to the support shaft 34 of the grip 38. The outer peripheral portion of the circular blade 22 has an edge 27 having an acute angle in cross section.
(See FIG. 5).

The circular blade 22 is attached to the mounting part 23. The mounting portion 23 has a disk shape,
Is a protective part 24 having a concave cross section. A circular blade 22 is coaxially fitted in the concave section of the protection part 24. The edge 27 of the circular blade 22 is surrounded by the inner peripheral edge 29 of the protection part 24. This prevents the edge 27 of the circular blade 22 from being exposed to the outside. For this reason, there is no possibility that the exposed edge portion 27 may hurt the worker,
Safety during work can be ensured.

The protection section 24 is, as shown in FIG.
4 is cut out to form a cutout portion 28 (28a, 28
b). Thereby, a part of the edge 27 of the circular blade 22 is exposed in the cutout 28. In addition, the protection part 24 is provided with respective cut parts 28a, 28b.
And core wire holding portions 26a and 26b adjacent to the wire. The core wire holding portions 26 (26a, 26b)
Is to be brought into contact with the surface of the core wire portion 2 when it is inserted into the cutout portion 28. The core portion 2 is formed by a slot rod having a plurality of slot grooves on the peripheral surface and a core such as an optical fiber disposed in the slot groove.
Accordingly, by providing the core wire holding portion 26 in the cable holding winding cutting tool 20, when the cable holding winding 3 is cut,
Entanglement of the core wire of the core portion 2 can be prevented.

Also, as shown in FIG.
Wedge-shaped claws 30a, 30b are formed in the protective portion 24 between the cut portion 28 and the cut portion 28. These claws 30a, 30b
Serves as a guide for guiding the edge portion 27 of the circular blade 22. That is, the cable retainer 3 is inserted into the edge of the cable retainer 3 from the tip of the claw portion 30 to guide the cable retainer 3 to the edge 27.

In the present embodiment, the core presser 26a and the cut 28a, and the core press 26b and the cut 28
b is formed symmetrically with respect to the center line of the protection part 24 as shown in FIG. For this reason, even if the worker is right-handed or left-handed, the worker can work with the dominant hand.
Therefore, the work can be performed without giving the operator a sense of incongruity.

The mounting portion 23 has an opening at the center similarly to the circular blade 22. Mounting part 2 with circular blade 22 attached
A support shaft 34 is provided by a set screw 32 inserted into the opening.
Is connected to the front end side of the. In addition, the mounting part 23 is the same as FIG.
As shown in FIG. 2, it has a reinforcing portion 25 on the back side,
As a result, the rigidity of the connection portion with the support shaft 34 is increased, and bending is prevented.

The grip 38 has a shape in which the base end of the support shaft 34 is coaxially enlarged. This makes it easier for the operator to grasp the cable presser winding tool 20 and facilitates the cutting work of the cable presser winding 3. Note that the grip portion 38 may be formed by covering the outer periphery with rubber or the like.

The operation of the cable holding and winding cutting tool 20 formed as described above is as follows. FIG. 4 and FIG. 5 are explanatory views showing work steps for cutting the cable presser winding 3 with the cable presser winding cutting tool 20. At the time of the cutting work of the cable holding roll 3, a necessary portion of the outer cover 4 of the cable 1 has been peeled off with a dedicated tool or the like, and the cable holding roll 3 is exposed at the portion where the outer cover 4 has been peeled off. As shown in FIGS. 4 and 5, the tip of the cutout 28a, that is, the tip of the claw 30a is inserted into the exposed edge of the cable retainer winding 3. The cable retainer 3 at the portion where the tip of the claw 30a is inserted is lifted along the claw 30a. At this time, the core wire holding portion 26a of the protection portion 24 is brought into contact with the surface of the core wire portion 2 in the cable holding wire 3 to prevent the core wire 2 from being entangled. Then, the cable retainer winding cutting tool 20 is moved so that the core wire holding portion 26a is along the surface of the core wire portion 2. As a result, the cable presser winding 3 inserted into the cut portion 28a is exposed in the cut portion 28a.
And is cut by the edge portion 27. For this reason, the cutting work can be performed by continuously inserting and guiding the cable presser winding 3 into the cutout portion 28a. In the present embodiment, as shown in FIGS. 4 and 5, the cable presser winding cutting tool 20 is moved in the circumferential direction toward the base of the exposed cable presser winding 3 for cutting.
Thereby, the cable presser winding 3 can be removed from the cable 1 from the root side. In this manner, the cable presser winding 3 can be cut off without damaging the cable core 2 and the cable presser 3 can be easily removed from the core 2.

In this embodiment, the center of the circular blade 22 is detachably attached to the mounting portion 23 with a set screw 32. That is, the mounting portion 23 in which the circular blade 22 is fitted into the protection portion 24 is detachably attached to the support shaft 34 by the set screw 32. Therefore, after the set screw 32 is loosened and the circular blade 22 is rotated, the set screw 32 is tightened again, so that the portion of the circular blade 22 exposed in the cutout portion 28 can be easily changed. Therefore, the cut portion 28
Even if a portion of the circular blade 22 exposed inside loses the cutting function due to long-term use or the like, a portion of the circular blade 22 that has not deteriorated can be easily exposed in the cutout portion 28. Thereby, the cutting function of the cable press winding cutting tool 20 can be restored again. Thus, the circular blade 22
Since the edge portion 27 can be used over the entire circumference, it can be used for a long time without waste in terms of cost.

FIGS. 6 and 7 are explanatory views showing modified examples of the cable holding and winding cutting tool 20. FIG. As shown in FIG. 6, the protection portion 24 of the cable holding and winding cutting tool 20 has an inclined surface 31 formed on the outer surface of the tip of the claw portion 30. Thereby, the winding of the core wire of the core portion 2 can be more reliably prevented. In addition, as shown in FIG. 7, the protection part 24 can be formed to have a shape in which an inclined surface 31 is provided on the claw part 30 and the tip of the claw part 30 is rounded.
Thereby, the winding of the core wire of the core portion 2 can be more reliably prevented.

In the embodiment, the case where the cable presser winding 3 is cut in the core portion circumferential direction by the cable presser winding cutting tool 20 has been described. What is necessary is just to use properly according to the kind of cable holding winding. This will be described in the following embodiment.

[0024]

FIG. 8 is an explanatory view showing a cutting operation of a cable presser winding in the embodiment. The first embodiment and the second embodiment shown in FIG. 8 are for the case where the cable presser winding 3 of the pull-in cable (the laid cable) is cut. FIG.
The cable retainer 3a shown in (a) is formed by winding a sheet material in the circumferential direction. The cable retainer 3b shown in FIG. 8B is formed by spirally winding a sheet material. Hereinafter, each cable holding winding 3a, 3
The cutting operation of b will be described. In addition, an Example is only an example and the way of cutting is not limited to an Example. The material and method of winding the cable holding roll, the type of cable, and the like are not limited to those of the embodiment, and the cable holding winding cutting tool 20 can be applied to, for example, a thread-like cable holding roll or a vinyl cable holding roll. Also, the present invention can be applied to a case where the end of the cable is cut.

<< Embodiment 1 >> Embodiment 1 is a case where the cable presser winding 3a wound in the circumferential direction is removed. In this case, as shown in FIG. 8A, the cable holding roll 3a is cut in the circumferential direction at the center of the winding end 52 as indicated by an arrow 54 to make a cut. Then, the cable holding roll 3a is peeled from the cut end of the cut winding end 52, and the core portion 2 can be exposed by cutting both sides of the cable holding roll 3a along the cutting line 50.

<< Embodiment 2 >> Embodiment 2 is directed to a case where the spirally wound cable presser winding 3b is removed. In this case, as shown by a cutting line 56 in FIG. 8B, the cable is wound in the axial direction at the center of the cable retainer 3b. Then, the cored wire portion 2 can be exposed by peeling off the cut cable retainer winding 3b as indicated by an arrow 57 and cutting both sides of the cable retainer winding 3b along a cutting line 58.

In the first and second embodiments, after a single cut is made in the cable holding roll 3, the cable holding roll 3 around the cut is pinched and held by hand, so that the cable holding roll 3 is formed. The cutting operation can be easily performed.

[0028]

As described above, according to the present invention, the grip portion having the mounting portion for mounting the blade, the protection portion provided on the mounting portion and surrounding the edge portion of the blade, A notch formed by notching and exposing a part of the edge of the blade, provided adjacent to the notch, when the cable presser winding is inserted into the notch,
Since the cable holding portion is brought into contact with the core portion, the cable holding portion can be cut off without damaging the cable core portion, and the cable holding portion can be easily removed from the core portion.

[Brief description of the drawings]

FIG. 1 is a front view of a cable press winding cutting tool according to an embodiment.

FIG. 2 is a cross-sectional view of a main part of a cable press winding cutting tool according to the embodiment.

FIG. 3 is a side view of a cable press winding cutting tool according to the embodiment.

FIG. 4 is an explanatory view showing a step of removing a cable holding roll by a cable holding roll cutting tool in the embodiment.

FIG. 5 is an explanatory view showing a step of removing a cable holding roll by a cable holding roll cutting tool in the embodiment.

FIG. 6 is an explanatory view showing a modified example of the cable press winding cutting tool.

FIG. 7 is an explanatory view showing a modified example of the cable press winding cutting tool.

FIG. 8 is an explanatory diagram showing a cutting operation of the cable presser winding in the embodiment.

[Explanation of symbols]

1 ... Cable, 2 ... Core part, 3 ... Cable retainer winding, 4 ... Outer sheath, 20 ... Cable retainer winding cutting tool, 22 ... Circular blade, 23 ... Part, 24 ...
… Protective part, 25 …… Reinforcing part, 26 …… Core wire holding part,
28 ... cut section, 29 ... inner peripheral part, 30 ...
... claw part, 31 ... inclined surface, 32 ... set screw, 34
…… Spindle, 38… Grip part, 50 …… Cutting line, 5
2 ... winding end, 54 ... arrow, 56 ... cutting line,
57 ... arrow, 58 ... cutting line.

Claims (3)

[Claims] 1. A grip portion having a mounting portion for mounting a blade, a protection portion provided on the mounting portion and surrounding an edge portion of the blade, and an edge portion of the blade formed by notching the protection portion. And a core holding portion provided adjacent to the cut portion and abutting on the core portion when the cable holding roll is inserted into the cut portion. Cable holding winding cutting tool. 2. The cutting tool according to claim 1, wherein the blade is formed in a substantially circular shape and is detachably attached to the mounting portion. 3. The cable retainer winding according to claim 1, wherein the protective portion is formed by forming at least one pair of the core wire pressing portion and the cut portion symmetrically with respect to a center line of the protective portion. Cutting tool.