JP2974233B2 - Exterior treatment system for metal corrugated pipe exterior cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing a metal corrugated pipe from a metal corrugated pipe and, more particularly, to a metal corrugated pipe which is formed by coating a stainless steel metal corrugated pipe. TECHNICAL FIELD The present invention relates to a metal corrugated pipe armored cable sheathing treatment device which can be removed without damaging a cable main body when removing the cable body.

[0002]

2. Description of the Related Art Metallic corrugated pipe armored cables used as power transmission cables are often coated with aluminum or lead, but depending on the conditions of the transmission line, those with a stainless steel coating are used. Is used. In the metal corrugated pipe armored cable, an outer peripheral portion of a cable configured in the same manner as a general CV cable is covered with a metal corrugated pipe, and is configured, for example, as shown in FIG. Have been. A general cable will be described with reference to FIG. 4. A cable 1 includes an inner semiconductive layer 3, a crosslinked PE insulator 4 having a predetermined thickness, an outer semiconductive layer 5,
A layer of a wire shield 6 made of a number of copper wires is sequentially formed, a pressing tape 7 is wound around the surface of the layer of the wire shield 6, and a metal corrugated tube 8 is further covered on the surface.

As the metal corrugated tube 8, a tube provided with a stainless steel coating in addition to the aluminum or lead coating as described above is used. When the metal corrugated pipe is coated on the surface of the cable, a metal plate member is arranged vertically along the outer periphery of the cable, the butted ends thereof are welded, and the metal corrugated pipe 8 is formed using a corrugation device. Like that. When the metal corrugated tube 8 is made of stainless steel, advantages such as improvement of the durability of the cable can be exhibited as compared with those provided with an exterior such as aluminum or lead.

[0004]

However, in the case of a metal corrugated pipe armored cable constructed as described above, if a defect or the like occurs in the metal corrugated pipe during the manufacturing of the cable, the cable is manufactured. However, the already manufactured metal corrugated pipe armored cable cannot be used. However, the metal corrugated pipe armored cable has no defect in the main body of the cable, but cannot be used as the metal corrugated pipe armored cable because the metal corrugated pipe has a defect. Therefore, it is necessary to remove the metal corrugated pipe from the metal corrugated pipe armored cable in which the manufacturing failure has occurred, collect the cable main body, and reuse the cable main body.

[0005] In a general metal corrugated pipe armored cable coated with aluminum or lead, the armor is made of a relatively soft metal, so that it is relatively easy to cut the metal corrugated pipe with a knife. This can be done and the metal corrugated tube can be removed from the cable and only the cable can be reused. However, in the case of a metal corrugated pipe armored cable using a metal such as stainless steel, since the metal of the armor is very hard, the metal corrugated pipe cannot be easily removed depending on the cutting blade. There is. Further, it is conceivable that the cutting device for the metal corrugated pipe is configured by using a device that cuts while vibrating the blade. However, when a device that vibrates the blade is used, there is a possibility that the surface of the insulator of the cable may be damaged. This makes it difficult to reuse the cable.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for removing a metal corrugated pipe from a cable provided with a hard metal coating such as stainless steel in the above-mentioned cable with a metal corrugated pipe. It is an object of the present invention to provide a device which can cut a metal corrugated pipe with a cutting blade while leaving a part of a valley portion of the metal corrugated pipe, and thereafter remove the metal corrugated pipe using a peeling device.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a cutting blade is arranged on both sides with respect to an axis of a metal corrugated pipe armored cable, and the cutting blade can be moved to and away from the metal corrugated pipe armored cable. A device for performing positioning by using a mechanism and cutting and removing the metal corrugated pipe from both sides is configured, and each cutting blade arranged on both sides of the metal corrugated pipe armored cable is separated from the metal corrugated pipe armored cable. A driving device for driving in the contact direction is provided, and the cutting blade is arranged so as to be out of phase by a half pitch with respect to the pitch of the peak of the metal corrugated pipe, leaving a part of the valley of the metal corrugated pipe. And a mechanism for cutting by a cutting blade.

In the present invention, each of the cutting blades may be a disk-shaped rotary blade, and the rotational axis positions of the rotary blades may be shifted by a half pitch with respect to a pitch of a peak portion of the metal corrugated pipe. It is arranged so that it is shifted.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a metal corrugated pipe sheathing cable treating apparatus according to the present invention. The example shown in FIGS. 1 and 2 shows the configuration of an exterior processing apparatus of the present invention. The exterior processing apparatus 10 has a straightening roller device 15 disposed next to a delivery drum 11 and a downstream portion thereof. In addition, a cutting device 20 is provided, and a peeling device 30 is further disposed to remove the metal corrugated tube in a state of being divided into two, and a device for winding the cable main body around the winding drum 12 is configured. The straightening roller device 5 arranged upstream of the exterior processing device 10 has a plurality of roller members 16... That apply a pressing action from both sides of the cable 1, corrects the bending of the cable, and directs the cable 1 toward the cutting device. I will send it. Also,
In the cutting device 20, two cutting blades 20A and 20B are arranged corresponding to both sides of the cable.
The two cutting blades 20A and 20B are set at positions where the cutting teeth are opposed to the axis of the exterior processing device.

The two cutting blades 20A and 20B are arranged on a support 21 so that their positions can be adjusted according to the size of the cable, as will be described later. A disk-shaped rotary blade member commonly called a tip saw can be used. By rotating the rotary blade member at a high speed, a hard metal such as stainless steel can be cut. Further, a means for guiding a cable is disposed downstream of the exterior processing device 20, and a cable 1 is attached to the winding drum 12.
In the upper and lower portions of the guide means of the cutting device 1, a metal corrugated pipe cut in a horizontal position by the cutting device is divided into upper and lower portions in a state of being cut apart. The upper and lower roller devices 31,
35 are arranged.

In the upper and lower roller devices 31 and 35, roller members formed with uneven grooves and the like are arranged so as to face each other,
The upper and lower members 8A, 8B of the metal corrugated pipe are nipped between the rollers 32, 33 and 36, 37, respectively. Then, the upper and lower roller devices 31 and 35 are respectively driven between the upper roller device 31 and the lower roller device 35 by driving the upper and lower roller devices 31 and 35 in a state where the upper and lower members of the metal corrugated tube are engaged with each other. The metal corrugated pipe with parallel cuts is divided into upper and lower members 8A and 8B to be separated. Therefore, in the exterior treatment apparatus of the present invention, the metal corrugated pipe can be cut in an imperfect state in the cutting apparatus, and the metal corrugated pipe can be removed by the peeling apparatus. So that it is cut short and removed.

As described above, in order to remove the metal corrugated pipe of the cable, the cutting device 20 is configured as a mechanism as shown in FIG. 3, and a cutting operation is performed by a cutting blade according to the size of the cable. be able to. In the cutting device 20 shown in FIG. 3, the cutting blades 20A, 20B arranged on both sides in the traveling direction of the cable 1
Are supported on the support base 21 via a mechanism for moving and positioning.
Of the two cutting blades, one cutting blade 20A is
By the slide rails 23 and 24 provided on the support 21,
It is guided so as to be detachable from the cable, and is provided with a driving means by a driving device 25.

The driving device 25 uses a motor 26 and a feed screw 28 driven via a speed reduction mechanism, and has a rotary encoder 27 for controlling the amount of movement of the cutting blade. Further, based on the information on the moving distance obtained by the rotary encoder 27, the operator can control the position of the cutting blade. Then, while confirming the moving amount of the feed screw by the encoder, the positioning operation with respect to the cutting blade is performed, so that the metal corrugated pipe can be cut.

Further, another cutting blade 20B arranged opposite to the cutting blade 20A has two slide rails 2B.
A mechanism for driving a support table 22a, which is provided so as to be able to be separated from and connected to the cable via the 3a and 24a, via a drive device 25a is configured. Further, the support table 2
2a is a slide rail 23b, 2
The cutting blade 20B is provided so as to be movable with respect to the moving direction of the cable by operating the driving device 25b via the cable 4b. Then, with respect to the cutting blade 20B, the cutting operation position by the cutting blade can be adjusted in both the axial direction and the length direction of the cable so that the corrugation pitch of the cable and the outer diameter of the cable can be adjusted. Can be done.

In the cutting apparatus of the present invention constructed as described above, as shown in FIG. 4, the positioning operation of the two cutting blades is performed so that the cutting operation on the metal corrugated pipe can be performed. . In the example shown in FIG. 4, a peak 8a and a valley 8b of the metal corrugated pipe are provided.
Are spirally formed at a predetermined pitch P, so that the peak of the metal corrugated pipe is shifted by a half pitch with respect to the two cutting blades. Therefore, in the present invention, the position (rotation axis P2) of the other cutting blade 20B is shifted by 1/2 pitch in the cable feeding direction with respect to the position (rotation axis P1) of one cutting blade 20A. The cutting blade 20
An operation of cutting the metal corrugated pipe 8 from both sides of the cable using two cutting blades A and 20B is performed. In the present invention, the two cutting blades are halved.
By setting the cable to be shifted in the cable feeding direction by the pitch and performing the cutting operation, the two cutting blades
Since the metal corrugated pipes are simultaneously hit against the ridges, when the metal corrugated pipe is cut, the displacement of the axis of the cable can be prevented.

In the example shown in FIG. 4, when cutting the metal corrugated pipe with the cutting blade, the cutting blade is positioned so that the cutting operation is performed with the metal plate of the valley 8b remaining about 1 mm. I have to. Then, by performing a cutting operation on the metal corrugated pipe while leaving a part of the valley, the cable can be discharged from the cutting device 20 while maintaining the circular shape of the metal corrugated pipe. For example, if the entire valley of the metal corrugated pipe is cut by a cutting blade, the metal corrugated pipe will be crushed in a state where the cut ends overlap due to the pressure applied during molding, so that the surface of the cable insulator may be damaged. May be. In addition, when the cut ends of the split metal corrugated pipes overlap each other, there is a problem that the cutting operation by the cutting blade cannot be performed in a favorable state.

Therefore, in the present invention, the cutting operation by the cutting blade can be easily performed by using a means for sending out from the cutting device while leaving a part of the valley of the metal corrugated pipe by the cutting device. In addition, the surface of the cable body is not damaged by the cut metal corrugated tube.
Then, while leaving a part of the valley portion of the metal corrugated pipe uncut, the metal corrugated pipe is moved toward the peeling device, and the upper and lower portions of the metal corrugated pipe are respectively bitten by the upper and lower roller devices of the peeling device. The metal corrugated tube is peeled from the cable body. Therefore, the upper and lower cut portions of the metal corrugated pipe separated from the cable body by the upper roller device 31 and the lower roller device 35 are:
The processing is performed using cutting and removing means (not shown), and the cable main body 1a is moved toward the winding drum 12 to be wound.

As described above, in order to perform a cutting operation on the metal corrugated pipe by using a cutting blade with a part of the valley of the metal corrugated pipe left uncut, as shown in FIG. Support tables 22 and 22a for supporting the two cutting blades 20A and 20B are provided so as to be detachable from the axis of the cable, so that the moving distance of the cutting blade can be easily controlled. ing.
Further, in a metal corrugated pipe armored cable, since the pitch of the irregularities formed on the surface of the metal corrugated pipe varies depending on the size of the cable and the like, it depends on the size of the pitch between the peaks and valleys of the metal corrugated pipe. Thus, it is necessary to change the conditions for using the cutting device.
Therefore, as shown in the cutting apparatus of the present invention, a mechanism for positioning the two cutting blades with respect to the axis of the cable and a mechanism for positioning one of the cutting blades corresponding to the pitch of the metal corrugated tube are combined. In this case, it is possible to configure an apparatus capable of performing the operation of removing the metal corrugated pipe from a cable of an arbitrary size.

In the above-mentioned exterior treatment apparatus of the present invention, as the straightening roller device, a device used for general straightening of a cable can be used, and besides, a bending or the like of a cable can be straightened. Any roller device can be used. Also, as the peeling device, it is possible to combine roller members of any shape as long as it can surely send the cut piece of the metal corrugated pipe, and to remove the fragment of the removed metal corrugated pipe. Any cutting means can be used as a processing mechanism. Further, as the cutting blade of the cutting device, the above-described tip saw or other cutting blade can be used as long as the target metal can be easily cut.

[0020]

As described above, the sheathing treatment apparatus for a metal corrugated pipe armored cable according to the present invention is configured as described above. Therefore, cutting blades are arranged corresponding to the positions on both sides of the metal corrugated pipe armored cable. By cutting leaving a part of the valley of the metal corrugated pipe with a cutting blade,
The cutting operation of the metal corrugated pipe can be easily performed. Further, after cutting with the cutting blade, the metal corrugated pipe is removed from the cable body using a roller device, so that the cable can be recovered in a reusable state, and the cable can be effectively used. Will be possible. Further, in the cutting apparatus of the present invention, the cutting blades arranged on both sides of the metal corrugated pipe are cut in order to perform the cutting operation in a state shifted by ピ ッ チ pitch with respect to the pitch of the peak of the metal corrugated pipe. The cutting operation can be easily performed in a stable state without the metal corrugated tube being displaced.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of an exterior processing apparatus of an apparatus of the present invention.

FIG. 2 is a plan view of the exterior processing apparatus of FIG. 1;

FIG. 3 is a plan view showing a configuration of a cutting device of the present invention.

FIG. 4 is an explanatory diagram showing a cutting operation by a cutting blade.

[Explanation of symbols]

Reference Signs List 1 cable, 2 conductor, 8 metal corrugated pipe, 10 exterior treatment device, 15 straightening roller device, 20 cutting device, 20A / 20B cutting blade, 21 support base, 22 support table, 23
・ 24 slide rails, 25 drive units, 2
6 motor, 28 feed screw, 30 peeling device, 31 and 35 roller device.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01B 15/00 H02G 1/12

Claims (2)

(57) [Claims] A cutting blade is arranged on both sides with respect to the axis of a metal corrugated pipe armored cable, and the cutting blade is positioned using a moving mechanism capable of moving away from and attached to the metal corrugated pipe armored cable. Constituting a device for cutting and removing the pipe from both sides, each cutting blade arranged on both sides of the metal corrugated pipe armored cable is provided with a driving device that is driven in a direction to be separated from and attached to the metal corrugated pipe armored cable, The cutting blade is arranged so as to be out of phase by a half pitch with respect to the pitch of the peak of the metal corrugated pipe, and is cut by the cutting blade, leaving a part of the valley of the metal corrugated pipe. Processing equipment for metal corrugated pipe armored cable. 2. Each of the cutting blades is a disk-shaped rotary blade, and the rotational axis positions of both rotary blades are shifted in the cable feeding direction by a half pitch with respect to a pitch of a peak portion of a metal corrugated pipe. The exterior treatment apparatus for a metal corrugated pipe exterior cable according to claim 1, wherein: