JP3562636B2 - Cable holding winding cutting tool - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cable holding coil cutting tool for cutting a cable holding coil wound around a core portion of a cable and removing the cable holding coil from the cable.
[0002]
[Prior art]
In general, a cable has a shape in which the outside of 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 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.
[0003]
In order to expose the core of the cable, it is necessary to first remove the outer cover, and then remove the outer cover 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 is cut using a general cutting tool such as a nipper or a knife to expose the core portion of the cable.
[0004]
[Problems to be solved by the invention]
However, conventionally, there have been the following problems.
Cutting tools such as knives and nippers have blades exposed to the outside. For this reason, there is a problem in that when cutting the cable retainer winding, there is a danger that the core part wound around the cable retainer winding may be cut, thereby damaging the core part and injuring the operator. Was. In addition, 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.
[0005]
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 holding coil without damaging the cable core, and to easily remove the cable holding coil from the core. It is to provide a cutting tool.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the cable press winding cutting tool of the present invention, a gripping 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, A cutout portion formed by cutting out the protection portion, and a cutout portion exposing a part of the edge portion of the blade is provided adjacent to the cutout portion, and when the cable presser winding is inserted into the cutout portion, the core wire portion is formed. And a core pressing portion to be brought into contact with the core wire.
[0007]
Further, the blade may be formed in a circular shape and detachably attached to the attachment portion.
[0008]
Further, the protection portion may be configured such that at least one pair of the core wire holding portion and the cut portion is formed symmetrically with respect to a center line of the protection portion.
[0009]
[Action]
In the above configuration, a 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 cut end 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 wire, and the core wire holding portion is moved along the surface of the core wire portion. Thus, the cable retainer inserted into the cut portion is guided by the edge of the blade exposed in the cut portion, and cut by the edge portion of the blade. At this time, since the core wire pressing portion is in contact with the core portion, there is no possibility that the core portion of the core portion may be caught and cut or pressed. By moving the cable presser winding cutting tool so that the core presser portion is along the surface of the corerer portion, it is possible to continuously insert and guide the cable presser winding into 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. In addition, since the edge of the blade is not exposed to the outside, safety in operation can be ensured. Note that the method of cutting the cable retainer winding may be such that it is cut in an appropriate direction according to the type of the cable, the winding method of the cable retainer, the material, and the like.
[0010]
In addition, when the blade is formed in a circular shape and is detachably attached to the mounting portion, the blade is removed from the mounting portion, and then the blade is rotated by a predetermined angle and then re-attached to the mounting portion. The portion of the edge portion of the blade exposed from 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 press winding cutting tool, the cutting function can be easily recovered. As described above, the edge portion of the blade can be used over the entire circumference, so that the blade can be used for a long time without waste in cost.
[0011]
Further, when the protective part is formed by forming 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, both when the worker is right-handed and also when left-handed The cutting work 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]
BEST MODE FOR CARRYING OUT THE INVENTION
The cable press winding cutting tool in the present embodiment will be described in detail with reference to the drawings. FIG. 1 is a front view of a cable press winding cutting tool 20 according to the present embodiment. FIG. 2 is a cross-sectional view of the cable pressing and winding cutting tool 20 as viewed from the AA ′ direction in FIG. FIG. 3 is a side view of the cable pressing and winding cutting tool 20 viewed from the direction BB ′ of FIG.
[0013]
The cable press winding cutting tool 20 has a circular blade 22. The center of the circular blade 22 is opened for fixing 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, and the cable retainer 3 (see FIGS. 4 and 5) is cut at the edge 27.
[0014]
The circular blade 22 is attached to the mounting part 23. The mounting portion 23 has a disk shape, and the surface side of the mounting portion 23 is a protection portion 24 having a concave cross section. The 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, and safety during work can be ensured.
[0015]
As shown in FIG. 3, the protection portion 24 has cutout portions 28 (28a, 28b) formed by cutting out the protection portion 24. Thereby, a part of the edge 27 of the circular blade 22 is exposed in the cutout 28. In addition, the protection portion 24 has core wire holding portions 26a and 26b adjacent to the cut portions 28a and 28b. The core holding portions 26 (26 a, 26 b) are for abutting the surface of the core portion 2 when the cable holding winding 3 is inserted into the cutout portion 28. The core portion 2 is formed of a slot rod having a plurality of slot grooves on a peripheral surface, and a core such as an optical fiber disposed in the slot groove. Therefore, by providing the core wire holding portion 26 in the cable holding winding cutting tool 20, it is possible to prevent winding of the core wire of the core portion 2 when cutting the cable holding winding 3.
[0016]
Further, as shown in FIG. 3, wedge-shaped claws 30a and 30b are formed in the protection portion 24 between the core wire holding portion 26 and the cut portion 28. The claw portions 30a and 30b serve as a guide for guiding the edge portion 27 of the circular blade 22. That is, the cable retainer 3 is guided to the edge 27 by being inserted into the edge of the cable retainer 3 from the tip of the claw portion 30.
[0017]
In the present embodiment, the core wire holding portion 26a and the cut portion 28a and the core wire holding portion 26b and the cut portion 28b are formed symmetrically with respect to the center line of the protection portion 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 a sense of incongruity to the worker.
[0018]
The mounting portion 23 has an opening at the center similarly to the circular blade 22. The mounting portion 23 to which the circular blade 22 is mounted is connected to the distal end surface side of the support shaft 34 by a set screw 32 inserted into the opening. The mounting portion 23 has the reinforcing portion 25 on the back side as shown in FIGS. 1 and 2, thereby increasing the rigidity of the connection portion with the support shaft 34 and preventing bending. .
[0019]
The grip portion 38 has a shape in which the base end side of the support shaft 34 is coaxially expanded in diameter. This makes it easier for the operator to grip the cable presser winding tool 20 and facilitates the work of cutting the cable presser winding 3. The grip portion 38 may be formed by covering the outer periphery with rubber or the like.
[0020]
The operation of the cable press 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, the outer cover 4 of the cable 1 is stripped off by a special tool or the like, and the cable holding roll 3 is exposed at the portion where the outer coat 4 is stripped off. As shown in FIGS. 4 and 5, the tip of the cutout portion 28a, that is, the tip of the claw portion 30a is inserted into the exposed edge of the cable retainer winding 3. The portion of the cable retainer 3 into which the tip of the claw 30a is inserted rises 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 presser 26a is along the surface of the core 2. As a result, the cable retainer 3 inserted into the cut portion 28a is guided by the edge portion 27 of the circular blade 22 exposed in the cut portion 28a, and cut by the edge portion 27. For this reason, the cutting operation can be performed by continuously guiding the cable presser winding 3 into the cutout portion 28a. In this embodiment, as shown in FIG. 4 and FIG. 5, the cable presser winding cutting tool 20 is moved in the circumferential direction to the exposed side of the cable retainer 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.
[0021]
In the present 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, even if a part of the circular blade 22 exposed in the cut portion 28 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 cut portion 28. . Thereby, the cutting function of the cable presser winding cutting tool 20 can be restored again. As described above, since the edge portion 27 of the circular blade 22 can be used over the entire circumference, it can be used for a long time without waste in terms of cost.
[0022]
FIGS. 6 and 7 are explanatory views showing a modification of the cable pressing and winding cutting tool 20. 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 side 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 an inclined surface 31 on the claw part 30 and a rounded tip of the claw part 30. Thereby, the winding of the core wire of the core portion 2 can be prevented even more reliably.
[0023]
In the embodiment, the case where the cable holding roll 3 is cut in the core wire circumferential direction by the cable holding winding cutting tool 20 has been described. However, the method of cutting the cable holding roll 3 depends on the type of the cable and the cable holding roll. Can be used properly according to the type of the device. This will be described in the following embodiment.
[0024]
【Example】
FIG. 8 is an explanatory view showing the work of cutting the 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. The cable presser winding 3a shown in FIG. 8A is formed by winding a sheet material in the circumferential direction. The cable retainer winding 3b shown in FIG. 8B is formed by spirally winding a sheet material. Hereinafter, the work of cutting the respective cable retainer windings 3a and 3b 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.
[0025]
<< Example 1 >>
The first embodiment 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 circumferentially cut 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 off 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.
[0026]
<< Example 2 >>
In the second embodiment, the spirally wound cable presser winding 3b is removed. In this case, as shown by the 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 holding roll 3b as shown by an arrow 57 and cutting both sides of the cable holding roll 3b along cutting lines 58.
[0027]
In the first and second embodiments, after a single cut is made in the cable presser winding 3, the cable presser winding 3 around the cut is pinched and held by hand to cut the cable presser winding 3. It can be done easily.
[0028]
【The invention's effect】
As described above, in the present invention, 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 a cutout formed in the protection portion are provided. A cut-off portion exposing a part of the edge portion of the blade, and a core wire 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. Therefore, the cable retainer can be cut off without damaging the cable core, and the cable retainer can be easily removed from the core.
[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 the cable press winding cutting tool according to the embodiment.
FIG. 3 is a side view of the cable press winding cutting tool in the embodiment.
FIG. 4 is an explanatory diagram 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 view showing a cutting operation of the cable presser winding in the embodiment.
[Explanation of symbols]
1 ... cable, 2 ... core wire, 3 ... cable retainer winding, 4 ... outer sheath,
Reference numeral 20: Cable retainer winding cutting tool, 22: circular blade, 23: mounting part,
24 Protective part 25 Reinforcing part 26 Core holding part
28 cut edge part 29 inner peripheral part 30 claw part
31 ... inclined surface, 32 ... set screw, 34 ... support shaft,
38 grip part, 50 cutting line, 52 winding end,
54... Arrow, 56... Cutting line, 57... Arrow, 58.

Claims (3)

A grip portion having a mounting portion for mounting the blade,
A protection portion provided on the mounting portion and surrounding an edge portion of the blade;
A cutout portion formed by cutting out the protective portion, exposing a part of the edge portion of the blade,
A cable holding roll cutting tool, comprising: a core holding portion provided adjacent to the cut portion and brought into contact with the core portion when the cable holding roll is inserted into the cut portion. 2. The cutting tool according to claim 1, wherein the blade is formed in a circular shape and is detachably attached to the mounting portion. 3. The cable retainer winding cutting tool according to claim 1, wherein the protective portion is formed by forming at least one pair of the core pressing portion and the cut portion symmetrically with respect to a center line of the protective portion. 4.

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