JPH09182231A - Cable cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable cutter by which a predetermined length of a cable can be continuously and efficiently cut. SOLUTION: A long cable C is fed to an engaging part while a pair of gears 11, 12 engaged with each other are rotated, thereby cutting a predetermined length of a cable. In those gears 11, 12, a cutter is formed of the tip 111b and the like of the teeth of one of the gears engaged with each other and the tip 121a and the like of the teeth of the other gear. Furthermore, in the state that both gears 11, 12 are engaged, a gap capable of receiving a cut cable C' is formed between the bottom surface 141 of the teeth and the tip surface 112e of the teeth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable cutting device capable of cutting a cable such as an electric wire into a predetermined length.

[0002]

2. Description of the Related Art Cables installed on electric poles or underground include power transmission lines, telephone lines, and CATV.
If there is a wire, but it deteriorates or the capacity is insufficient, replace it with a new cable. Old cables that have been replaced are often reused without being discarded.

When collecting an old cable, it is preferable to cut it into a predetermined length at the time of collection in consideration of convenience for transportation and recycling. Therefore, various cutting devices such as a cable cutting device that cuts a cable by utilizing the expansion and contraction force of the hydraulic expansion and contraction cylinder have been conventionally known.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable cutting device having a structure different from that of a conventional cutting device and capable of continuously and efficiently cutting a cable with a predetermined length. Has an aim.

[0005]

In order to achieve the above object, the cable cutting device of the present invention sends a long cable to the meshing part while rotating a pair of gears meshing with each other. , Cut this cable to the specified length. In these gears, the tips of the teeth of one gear and the tips of the teeth of the other gear mesh with each other to form a cutter. Further, in the state where both gears are meshed with each other, a gap is formed between the tooth bottom surface and the tooth tip surface to receive the cut cable.

According to the cable cutting device constructed as described above, the cable fed into the meshing portion is cut by the tooth tips of the teeth, so that the tooth thickness and the width of the tooth groove are formed to have predetermined dimensions. As a result, the cable can be continuously cut with a predetermined size. Also, the cut cable will be located between the tooth bottom surface and the tooth tip surface,
Since the cable is formed with a gap that can be received during this period, the cut cable does not bite and can be easily discharged from the meshing portion.

Further, the other cable cutting device according to the present invention is such that a first rotary member having teeth formed at predetermined intervals in the circumferential direction and a tooth having teeth meshing with the teeth of the first rotary member are formed. It is composed of two rotating members. Then, while the teeth of the rotary members are meshed with each other, the long cable is fed into the meshing portion while the rotary members are synchronously rotated, so that the cable is cut into a predetermined length. In these rotary members, the circumferential tooth-to-tooth spacing is made longer than the tooth thickness of the tooth, and the tip of the tooth formed on one rotating member and the tooth formed on the other rotating member. The tooth tip and the cutter make up the cutter. Further, a gap that can receive the cut cable is formed between the tooth bottom surface and the tooth crest surface in the state where the first rotating member and the second rotating member are engaged with each other.

According to the cable cutting device thus formed, the cable can be continuously cut to a predetermined size as in the above-mentioned cable cutting device, and the cut cable can be easily discharged from the meshing portion. Can be made. Further, by adjusting the tooth thickness and the tooth-to-tooth spacing, it is possible to cut the cable to a desired dimension with a length longer than that of the tooth thickness.

In each of the above cable cutting devices, it is preferable that the tooth bottom surface is formed to be inclined in one of the tooth width directions. By forming in this way, it is possible to discharge the cut cable in the desired direction,
The discharge can be performed more easily.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. A cable cutting device according to the following examples is for cutting an old cable C, which is composed of an electric wire C1 and a hard core (messenger wire) C2, as shown in FIG. 3, into a predetermined length for recycling. Is. The cable C is formed so that the electric wire C1 is slightly thicker than the hard core C2 and is covered with the coatings C1a and C2a, so that the outer shape is formed in a so-called "8" shape (a gourd shape). Then, a cable separating device described below separates each of the coatings C1a and C2a from the joint (constricted portion of the cable) Ca to separate the wires into individual wires, which are cut by the cable cutting device according to the present invention. After that, it will be recycled.

As shown in FIG. 7, the cable separating device 70 has a cylindrical main body 7 having a flange 71a formed at one end.
1, a disc-shaped cable guide 72 attached to the outer end surface of the flange 71a, and a cutter blade 73 provided in the inner peripheral space 71b of the main body 71. The cutter blade 73 is fixed to the main body 71, and the main body 71 is formed rotatably in the axial direction with respect to the holding member 75 via a bearing 74. Cable guide 7
2 allows the cable C to penetrate near the center, and
A guide hole 76 is formed in a shape along the outer shape of the cable C.

The cable separating device 7 configured as described above
The cable C is inserted into the guide hole 0 from the outside of the cable guide 72 into the guide hole 76 by the feeding means (not shown). As a result, the constricted portion Ca of the cable comes into contact with the cutting edge 73a and is cut open, and the cable C is separated into the electric wire C1 side and the hard core C2 side.

In this way, the cable C separated into the electric wire C1 side and the hard core C2 side and discharged from the cable separating device 70 is cut into a predetermined length by the cable cutting device. Here, an example of the cable cutting device will be described with reference to FIGS. 1 and 2.

The cable cutting device 10 is composed of two gears 11 and 12. Each gear 11, 12 is
A plurality of teeth 111, 112, 121, 122, 1 respectively
23 and the like. Here, since each tooth is formed in the same shape, the shape will be described by taking the tooth 123 as an example. The teeth 123 have tooth tips 123a, 123.
b is formed, and these tooth tips 123a and 123b are formed.
Left and right side surfaces 123c and 123d of the tooth extending from are formed in an involute tooth profile. Further, the tooth width T is formed so as to match the width W of the tooth groove of the meshing teeth.

The tooth depth (height from the root circle to the pitch circle) of the tooth 123 has a predetermined dimension larger than that of the end of the meshing blade member (height from the pitch circle to the tip circle). The diameter of the cable C is larger than that of the cable C, and the predetermined size is set larger than the diameter of the cable C.

The teeth 123 and the like formed in this way constitute a cutter with the tooth tips of one gear and the tooth tips of the other gear meshing with each other. That is, in the tooth 123, the tooth tops 123a and 123b form a cutter with the tooth top 113b of the tooth 113 and the tooth top 114a of the tooth 114.

The gears 11 and 12 having the teeth 123 and the like thus formed are fixed to the rotary shafts 151 and 161. Therefore, by rotating one of the rotating shafts, both gears 11 and 12 rotate in conjunction with each other. For example,
When the right gear 11 is rotated counterclockwise, the involute tooth profile portions of the teeth are meshed with each other, and the left gear 12 is rotated clockwise.

Now, the cutting operation of the cable C by the cable cutting device 10 will be described. The old cable C to be cut is fed out in the direction indicated by the arrow A and is located between the gears 11 and 12 (meshing portion). For example, as shown in FIG. 1, when the gears 11 and 12 are rotated as described above in a state where the cable C is located on the tooth tip surface 121e of the tooth 121, as the tooth 111 and the tooth 121 mesh,
The cable C is cut by the addendum 121a and the addendum 111b.

The cut cable C is located in the space between the tooth tip surface and the tooth bottom surface of the blade member. That is, tooth 11
The cable cut by 2 will be described by taking C'as an example. This cable C'has a length L substantially equal to the tooth thickness T.
And is located between the addendum surface 112e and the root circle 141. After that, by further rotating the gears 11 and 12, the cut cable (corresponding to C ″) is released from the space between the tooth tip surface and the tooth bottom surface and discharged to the outside of the cable cutter device 10. 2, the end faces of the tooth spaces 131, 132, 133 and the like are formed by obliquely cutting (spreading downward), so that the cut cable C is formed. It is easily discharged to the lower right of the cable cutting device 10.

When the cable C is recycled, the length L of the cable C separated into the electric wire C1 side and the hard core C2 side is preferably about 50 cm. Therefore, in the above cable cutting device 10, the tooth thickness T and the width W of the tooth groove are set to 50 cm.

Next, a cable cutting device 30 which is a different embodiment of the present invention will be described with reference to FIGS. 4 and 5. This cutting device 30 is composed of two circular rotary members 31 and 32, like the above cutting device 10. On the first rotating member 31 and the second rotating member 32, a plurality of teeth 311, 312, 321, 322 and the like having the same shape as the teeth 111 and the like formed on the gear 11 and the like are formed at predetermined intervals. ing. Since the teeth 311 and the like are formed in the same shape as the teeth 111 and the like, detailed description thereof will be omitted.

In each of the rotating members 31 and 32, the width W1 of the tooth gap between the teeth is formed wider than the width W of the tooth gap in the gears 11 and 12. That is, assuming that the diameters of the root circles are the same, the number of teeth in each rotating member 31, 32 is smaller than the number of teeth in the gears 11, 12 (in the rotating members 31, 32, the number of teeth is I have reduced it to half).

In the cutting device 30 thus constructed, unlike the cutting device 10, the teeth do not mesh with each other.
Simply rotating one of the rotating members does not cause the other rotating member to rotate synchronously. Therefore, the spur gear 35 is further attached to the rotary shafts 351 and 361 to which the rotary members 31 and 32 are fixed.
2,362 are fixed. These spur gears 352, 36
2 is formed with a pitch circle diameter PCD that is the same as the pitch circle diameter of the teeth of the rotating members 31 and 32. Then, the spur gear 352 and the rotary member 31 can be rotated by rotating the rotary shaft 351 by a rotary drive device (not shown). Then, as the spur gear 352 rotates, the spur gear 362 rotates, and the rotating shaft 361 rotates, so that the rotating members 31 and 32 rotate in synchronization.

The cable cutting device 3 configured as described above
The length of the cable C cut by using 0 is longer than the length of the cable C cut by using the cable cutting device 10. That is, as shown in FIG. 4A, in the cable C located between the tooth bottom surface 341 and the tooth top surface 312e by cutting the leading cable C ″ between the tooth tops 312b and 322a, the cutter C By rotating the blades 31 and 32, the rear end is cut by the tooth top 311b and the tooth top 321a as shown in (B). The length is about four times as long as the length of the cable C'cut by using it.
In addition, the tooth bottom surface 341 (corresponding to the tooth groove 133 and the like in the cable cutter device 10) is also formed by obliquely cutting the end surface (spreading downward).

Next, a cable cutting device 60 having another structure will be described with reference to FIG. This cable cutting device 60 is configured to have two gears 61 and 62 as in the above-described cable cutting devices 10 and 30, and each of the gears 61 and 62 has a plurality of teeth 611, 621, etc. Are formed at equal intervals. The shape of the blade member 611 and the like is different from the shape of the blade member 111 and the like in the cable cutting device 10, and the tooth side surfaces 611c, 611d and the like are formed straight instead of the involute tooth shape.

Therefore, although the gears 61 and 62 can be easily formed, the teeth 611 and 621 cannot be meshed with each other to smoothly transmit the rotational force of one gear to the other gear. Therefore, the cable cutting device 60
In the same manner as in the cable cutting device 30, the two rotating shafts 651 and 661 are rotationally driven by using other gears, and the gears 61 and 62 are synchronously rotated.

The cable cutting device 6 configured as described above
Even at 0, by rotating the gears 61 and 62, the tips 611b of the teeth 611, 621, 624, etc.
The cable can be cut at the tooth top 621a, the tooth top 624b and the tooth top 611a, and the like.

Although FIG. 6 shows a case in which the tooth width T2 and the groove width W2 are formed to have substantially the same dimensions as in the gear 11 and the like, the present invention is not limited to such a configuration. However, it is of course possible to widen the width of the groove such as the rotating member 31 to increase the length of the cable to be cut.

[0029]

As described above, in the present invention, the cable cutting device is constituted by the pair of gears meshing with each other, and in the case of such a constitution, the tooth thickness and the width of the tooth groove are almost the same. Cables can be cut to dimensions. Further, the cable cutting device may be composed of a first rotating member having teeth formed at predetermined intervals in the circumferential direction and a second rotating member having teeth formed to mesh with the teeth of the first rotating member. With this structure, the cable can be cut with a desired length that is equal to or larger than the tooth thickness and the width of the tooth groove. Further, it is preferable that the tooth bottom surface is formed to be inclined in one of the tooth width directions, and by forming in this way, the cut cable can be easily discharged in a desired direction.

[Brief description of the drawings]

1 is a top view of a cable cutting device according to the present invention. FIG.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing an example of a cable cut by the cable cutting device.

FIG. 4 is a top view showing another embodiment of the cable cutting device according to the present invention.

FIG. 5 is a view as seen from the arrow V in FIG. 4;

FIG. 6 is a top view showing another embodiment of the cable cutting device according to the present invention.

FIG. 7 is a cross-sectional view of the cable separating device.

[Explanation of symbols]

 10, 30, 60 Cable cutting device 11, 12, 61, 62 Gear 31, 32 Rotating member 70 Cable separating device C cable

Claims (3)

[Claims] 1. A cable cutting device comprising a pair of gears meshing with each other, feeding a long cable into a meshing portion while rotating these gears, and cutting the cable at a predetermined length. A cutter is configured with the tooth tips of one gear tooth and the tooth tips of the other gear that mesh with each other, and the cable cut between the tooth bottom surface and the tooth tip surface in a state in which the both gears are in mesh with each other. A cable cutting device, characterized in that a gap capable of receiving is formed. 2. A first rotating member having teeth formed at predetermined intervals in a circumferential direction, and a second rotating member having teeth formed to mesh with the teeth of the first rotating member. A cable cutting device that feeds a long cable to a meshing portion while synchronously rotating both rotating members in a state where the teeth of the members are meshed with each other and cuts the cable at a predetermined length. The tooth gap in the circumferential direction is made longer than the tooth thickness of the formed tooth, and the tooth tip of the tooth formed on one rotating member and the tooth tip of the tooth formed on the other rotating member are formed. A cutter is configured to form a gap capable of receiving the cut cable between the tooth bottom surface and the tooth tip surface in a state where the first rotating member and the second rotating member are meshed with each other. Cable cutting device. 3. The method according to claim 1, wherein the bottom surface of the tooth is formed to be inclined in one of the tooth width directions so that the cut cable can be easily discharged. The described cable cutting device.