JPH07312129A - Self-support type cable manufacturing device and method - Google Patents

Abstract

PURPOSE:To provide a self-support type cable manufacturing device and method in which a self-support type cable can be taken securely without disordering a twisting pitch or crushing a neck part, and in which a sufficient takeup force can be generated even in a line where tension on the takeup side cannot be secured. CONSTITUTION:A first wheel 25a on the upstream side having plural circumferential recessed grooves 30a which are separate from each other in an outer circumferential surface, and a second wheel 25b on the downstream side having plural circumferential recessed grooves 30b which are separate from each other in an outer circumferential surface are provided. The first and the second wheels 25a, 25b are rotated by a driving mechanism, so a self-support type cable 1 stretched around the recessed grooves 30a, 30b in the first and the second wheels 25a, 25b is supplied from the extruder side to the takeup machine side. A cable pressingbelt is provided close to the recessed groove 30b on the exit side of the second wheel 25b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting cable manufacturing apparatus and manufacturing method.

[0002]

2. Description of the Related Art Generally, a self-supporting cable (with slack) has a cable core and a supporting wire which are commonly covered with a sheath having a neck portion, and the cable core is covered with a supporting wire.
It is twisted while reversing the direction at a reversal angle of 0 ° or less.

That is, the cable core and the supporting wire are separately fed from different drums to pass through the crosshead of the extruder, and the crosshead is rotated alternately to the right and left while the cable core and the supporting wire are S-shaped around the supporting wire. The Z twist was imparted.

The cable pushed out from the crosshead is taken up by the take-up machine and supplied to the take-up machine.

Conventionally, a so-called endless track type take-up machine shown in FIG. 13 has been used as the take-up machine. That is, the endless track type take-up machine has a pair of rollers a, a and the rollers a, a.
a first holding body c having a belt b wound around a;
A second holding member f having a pair of rollers d, d and a belt e wound around the rollers d, d;
The cable g is held by the holding bodies c and f as shown in FIG. 14, and the belts b and e are rotated by driving the rollers a, a, d, and d by a drive motor (not shown). The cable g is made to travel and conveyed.

[0006]

However, as described above, when the cable g is held by the belts b and e, the pressing force thereof causes the neck portion h of the cable g to be crushed and the twist pitch to change. In some cases, the cable g may be dislocated from the center of the belts b and e in the width direction and may come off the take-up machine during traveling.

In view of this, the present invention provides a self-supporting cable manufacturing apparatus and manufacturing method capable of reliably supplying a cable to a winder without crushing the neck or changing the twist pitch. With the goal.

[0008]

In order to achieve the above object, a self-supporting cable manufacturing apparatus according to the present invention comprises a cable core and a supporting wire which are commonly covered with a sheath having a neck portion. In a manufacturing apparatus for manufacturing a self-supporting cable, an upstream first foil having a plurality of independent circumferential grooves on an outer peripheral surface and a downstream first foil having a plurality of independent circumferential grooves on an outer peripheral surface. A second wheel, and a drive mechanism for rotating the first and second wheels to supply the cable wound around the concave grooves of the first and second wheels from the extruder side to the winder side. And a cable pressing belt provided in the vicinity of the concave groove on the outlet side of the second wheel.

Another self-supporting cable manufacturing apparatus according to the present invention is a manufacturing apparatus for manufacturing a self-supporting cable in which a cable core and a support wire are commonly covered with a sheath having a neck portion. An upstream first foil having a plurality of independent circumferential grooves on the outer peripheral surface, and a downstream second foil having a plurality of independent circumferential grooves on the outer peripheral surface;
A drive mechanism for rotating the second wheel to supply the cable wound around the concave grooves of the first and second wheels from the extruder side to the winder side, and the outlet side of the first wheel And a cable pressing belt provided in the vicinity of the concave groove.

Next, one self-supporting cable manufacturing method according to the present invention is a method for manufacturing a self-supporting cable in which a cable core and a supporting wire are commonly covered with a sheath having a neck portion. A cable from the machine is wound around a plurality of circumferential grooves of the upstream first wheel and a plurality of circumferential grooves of the downstream second foil to rotate the first and second foils. The cable in the groove on the outlet side of the second foil is supplied to the winder side while being held by the cable holding belt.

Another method of manufacturing a self-supporting cable according to the present invention is a method of manufacturing a self-supporting cable in which a cable core and a supporting wire are commonly covered with a sheath having a neck portion. The cable from the above is wound around the plurality of circumferential grooves of the upstream first foil and the plurality of circumferential grooves of the downstream second foil, and the first and second wheels are rotated to rotate the first and second foils. The cable in the groove on the exit side of the 1-wheel is supplied to the winder side while being held by the cable holding belt.

[0012]

The cable is wound around the first and second wheels with a plurality of turns. Since the cable is fitted in each groove, the cables can be taken out without overlapping.

The cable in the groove on the outlet side of the first wheel or the outlet side of the second wheel is pressed by the cable pressing belt, and a predetermined take-up force can be sufficiently secured.

[0014]

The present invention will be described in detail below with reference to the drawings illustrating the embodiments.

1 and 2 show a self-supporting cable manufacturing apparatus according to the present invention, which manufactures the slack-supporting self-supporting cable 1 shown in FIG.

The self-supporting cable 1 is shown in FIG.
And as shown in FIG. 7, the cable core 2 and the support wire 3 are
Commonly covered with an integral sheath 5 having a neck 4, and
The cable core 2 is twisted around the supporting wire 3 while reversing the direction at an inversion angle of 360 ° or less.

In general, this type of cable has a horizontal angle of 180 ° or less with respect to the lowest point of the support line 3 as a center, and is usually a horizontal line.
The cable core 2 is SZ twisted with respect to the support wire 3 at an inversion angle of 90 °.

As the cable core 2, for example, as shown in FIG. 8, a core body 7 having a plurality of holding concave grooves 6 on the outer periphery, and a single core or a twist inserted in the center hole of the core body 7. The tension member 8 is made of a steel wire, the tape-type fiber core wire 9 is housed in the holding groove 6, the interposing pair 10 and the like, but is not limited to this. In FIG. 8, 12 is a coating layer made of aluminum or the like.

As the supporting wire 3, for example, as shown in FIG. 9, a metal stranded wire such as a galvanized steel stranded wire, a non-metallic stranded wire such as an aromatic polyamide fiber, FRP, etc., and polyethylene or an adhesive polyolefin It is directly coated with the primary coating layer 11 of synthetic resin such as non-twisted polyethylene or polyvinyl chloride, but of course, it is not limited to this.

In FIG. 7 etc., the cable core 2
Also, the illustration of the support line 3 is simplified.

The material of the sheath 5 is, for example, a synthetic resin such as polyethylene or polyvinyl chloride. In this case, a material such that the sheath 5 and the primary coating layer 11 of the support wire 3 are integrated with each other is selected. It is preferable that the same material be used.

Therefore, this manufacturing apparatus has an extruder 16 (see FIG. 7) having a crosshead 15 for extruding a material for commonly covering the cable core 2 and the support wire 3 with the sheath 5 having the neck portion 4. ) Is provided.

The cable core 2 and the supporting wire 3 are respectively wound around separate drums, and the cable core 2 and the supporting wire 3 fed from the respective drums are introduced into the crosshead 15 of the extruder 16. Supplied.

The crosshead 15 of the extruder 16 has a nipple / die 24 having an eyeglass-shaped extrusion hole 23 in which both circular holes 21 and 22 are connected by a slit hole 20, as shown in FIG.
And the support wire 3 is passed through the circular hole 21 of the crosshead 15 that rotates (swings) alternately left and right as shown by arrows A and B,
At the same time, the material of the sheath 5 is extruded through the circular hole 22 at a position eccentric from the center O, and the core 2 and the support wire 3 are commonly covered with the sheath 5.

On the downstream side of the extruder 16, a take-up machine 17 shown in FIGS. 1 and 2 is provided. The take-up machine 17 includes a pair of first and second wheels 25a around which the cable 1 is wound,
25b, a drive mechanism 27 (see FIG. 4) for rotationally driving the first and second wheels 25a, 25b, and a cable pressing belt 28. The first and second wheels 25a, 25b
Are arranged in series.

Thus, the first and second wheels 25a and 25b
As shown in FIGS. 3, 4 and 5, each has a plurality of independent circumferential grooves 30a and 30b on its outer peripheral surface, and the first foil 25a is located on the upstream side, that is, on the extruder 16 side. Arranged, second
The foil 25b is arranged on the downstream side, that is, on the winder 31 (see FIGS. 1 and 2) side.

Specifically, the first and second wheels 25a and 25b
Are the rotary shafts 32a and 32b and the rotary shafts 32a and 32b, respectively.
And a body portion 33a, 33b integrated with the body portion 33a.
The above-mentioned concave grooves 30a and 30b are formed on the outer peripheral surfaces of a and 33b, respectively. In this case, the first wheel 25a has four grooves 30a and the second wheel 25b has three grooves 30b.

The drive mechanism 27 is provided with a motor 19 such as an AC servo motor, a speed reducer 34, etc., the driving force of the motor 19 is transmitted to the speed reducer 34, and the speed reducer 34 interlocks with a coupling member. It is transmitted to the rotary shaft 29b of the second wheel 25b via 35 and to the rotary shaft 32a of the first wheel 25a from the rotary shaft 32b of the second wheel 25b via the interlocking connecting member 36.

The interlocking connecting member 35 includes a sprocket 37 attached to the output shaft of the speed reducer 34, a sprocket 38 attached to the rotating shaft 32b, and a chain 39 wound around the sprockets 37, 38. The connecting member 36 is a rotary shaft.
Pulleys 41a and 41b fitted on the outer surfaces 32a and 32b, and the pulleys
And a belt 42 that is wound around 41a and 41b.

By the way, the first and second wheels 25a, 25b
Are arranged on the base 40. That is, the base 40 is the base 43
And the leg 44 that is erected on the base 43, and the leg 44
A holding frame body 45 mounted and fixed on the holding frame body 45, leg bodies 46 standing on the holding frame body 45, and a holding plate 47 provided on the leg bodies 46.

A bearing provided on the holding plate 47
A rotary shaft 32a of the first wheel 35a is rotatably supported by 48, 48, and a rotary shaft 32b of the second wheel 25b is rotatably supported by bearings 49, 49 provided on the holding plate 47.

The rotating shafts 25a and 25b are respectively provided with a base 40.
It projects forward through the front wall 50 of the. Guide rollers 51 are attached to the outer peripheral sides of the first and second wheels 25a and 25b.

The cable 1 from the extruder 16 is
In the concave grooves 30a and 30b of the first and second wheels 25a and 25b, as shown in FIG.
It is hung around as shown in.

That is, the first groove 25a has a groove 30a, the second wheel 25b has a groove 30b, the first wheel 25a has a groove 30a, the second wheel 25b has a groove 30b, and 1 foil 25
The concave groove 30a of "a", the concave groove 30b of "c" of the second wheel 25b, and the concave groove 30a of "d" of the first wheel 25a are successively wound around. That is, the cable 1 which has entered the concave groove 30a of the first foil 25a as indicated by the arrow C is discharged from the concave groove 30a of the first foil 25a as indicated by the arrow D.

Therefore, when the motor 19 of the drive mechanism 27 is rotationally driven, the rotary shaft is moved through the speed reducer 34 and the interlocking connecting member 35.
When 32b rotates, the rotary shaft 32 is rotated through the interlocking connecting member 36.
a rotates, and the first and second wheels 25a and 25b rotate together, whereby the cable 1 is sequentially supplied from the extruder 16 side to the winder 17 side.

Next, the pressing belt 28 is wound around the four rollers 52, which are arranged around the second wheel 25b. Circumferential grooves 53, into which the pressing belt 28 is fitted, are formed on the outer peripheral surface of the roller 52, and the pressing belt 28 is wound around the groove 53 of each roller 52. Specifically, the presser belt 28
Is wound around so as to have a substantially U shape when viewed from the front, and is located on the outlet side of the second wheel 25b, that is, the concave groove of C of FIG.
The cable 1 fitted in 30b is pressed as shown in FIG.

Further, as shown in FIG.
Can be reciprocated as indicated by arrows E and F. That is, FIG.
As shown in FIG. 5, a reciprocating mechanism M is connected to the roller 52, and the reciprocating mechanism M is driven to reciprocate as shown by arrows E and F to adjust the tension of the pressing belt 28. The reciprocating mechanism M includes a slide body 55 which slides as shown by arrows E and F while being guided by a pair of guide rods 54, 54, and the shaft of the roller 52 is attached to the slide body 55. The roller 52 is moved by sliding.

Therefore, in this case, the cable 1 in the outlet side of the second foil 25b, that is, the concave groove 30b of the c can be pressed, so that the cable tension of the take-up machine 17 can be secured, and the cable tension can be ensured. It is possible to generate a take-up force.

As shown in FIGS. 4 and 5, this base is
A guide roller group 56 is provided at 40, and the cable 1 is supplied to the winder 17 via the guide roller group 56.

Further, the winder 17 is provided with a drum 57 around which the cable 1 is wound, as shown in FIGS.

Next, a cable manufacturing method using the self-supporting cable manufacturing apparatus configured as described above will be described.

The cable core 2 and the support wire 3 are fed from separate drums and supplied to the crosshead 15 of the extruder 16.

In this crosshead 15, the cable core 2 and the supporting wire 3 are commonly covered with a sheath 5 having a neck portion 4 to form a self-supporting cable 1, which is taken up by a take-up machine 17
Supply to. In this case, the cable 1 is cooled by passing through a water tank (not shown) before being supplied to the take-up machine 17.

Next, the cable 1 is taken up by the take-up machine 17 and taken up by the take-up machine 17, and the production of the self-supporting cable 1 is completed. Before winding on the winder 17, the neck 4
It is also preferable to form the slits at a predetermined pitch.

Therefore, according to the take-up machine 17, although the cable 1 makes a plurality of turns, the concave groove 30a,
Since it fits in 30b, the cables 1 can be taken over without overlapping. Further, a slitter for forming a slit is provided on the downstream side of the take-up machine 17, or a sufficient take-up force is provided even in a line where the take-up machine 17 cannot secure tension on the take-up side such as a so-called under-roll type. Can be demonstrated.

FIG. 11 shows another embodiment. In this case, the holding belt 28 is arranged on the first wheel 25a side. That is, the four rollers 52 ... On the outer peripheral side of the first wheel 25a.
The holding belt 28 is wound around the rollers 52 in a reverse U-shape with the opening facing the downstream side, and the outlet side of the first wheel 25a, that is, in the concave groove 30a shown in FIG. Cable 1
I am trying to hold down.

Of course, in this case as well, it is preferable to move the roller 52 of A through the reciprocating mechanism M in the directions of arrows E and F to adjust the tension of the pressing belt 28.

Therefore, also in this case, as in the above-mentioned embodiment, even in the line where the tension on the winding side cannot be secured,
It is possible to exert a sufficient take-up force.

In the present invention, the first and second wheels are
The number of concave grooves 30a, 30b of 25a, 25b can be freely increased or decreased,
The diameters of the first and second wheels 25a and 25b can be freely changed, but if the diameter is too small, the radius of curvature of the cable 1 at the turn portion will be small, which is not preferable. Is unfavorable because it becomes large
In the example, the wheel diameter was around 1100 mm.

[0050]

Since the present invention is configured as described above, it has the following effects.

Since the self-supporting cable 1 fits into the circumferential grooves 30a and 30b of the first and second wheels 25a and 25b, the cables 1 can be reliably taken out without overlapping or shifting and twisting. The pitch is not changed and the neck 4 is not crushed.

Even in the line where the tension on the winding side cannot be secured, the cable holding belt 28 can sufficiently exert the pulling force. In this case, the pulling force of the cable is secured by the first and second wheels 25a and 25b,
The cable pressing belt 28 is provided with the cable 1 in the concave grooves 30a and 30b.
Since it is merely pressed with a force that does not come off, there is no fear that the neck portion 4 will be crushed.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part of a self-supporting cable manufacturing apparatus according to the present invention.

FIG. 2 is a front view of a main part.

FIG. 3 is an enlarged plan view of a main part.

FIG. 4 is an enlarged front view of a main part.

FIG. 5 is an enlarged side view of a main part.

FIG. 6 is a bottom view of the self-supporting cable.

FIG. 7 is a cross-sectional view of a self-supporting cable.

FIG. 8 is an enlarged sectional view of a cable core.

FIG. 9 is an enlarged cross-sectional view of a support line.

[FIG. 10] FIG. 10 is an explanatory diagram showing a method of winding a self-supporting cable.

FIG. 11 is a front view of a main part of another embodiment.

FIG. 12 is an enlarged view of a main part of a second wheel.

FIG. 13 is a simplified diagram showing a conventional take-up machine.

FIG. 14 is an explanatory diagram showing a conventional defect.

[Explanation of symbols]

 1 Self-supporting cable 2 Cable core 3 Support wire 4 Neck 25a 1st wheel 25b 2nd wheel 27 Drive mechanism 28 Cable holding belt 30a Circumferential groove 30b Circumferential groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takashi Kaneko 3-4-1, Marunouchi, Chiyoda-ku, Tokyo Sanryo Cable Industry Co., Ltd. Tokyo office (72) Inventor Takahiko Yano 4-chome, Ikejiri, Itami City, Hyogo Prefecture Mitsubishi Cable Industries, Ltd. Itami Works

Claims (4)

[Claims] 1. A manufacturing apparatus for manufacturing a self-supporting cable in which a cable core and a supporting wire are commonly covered by a sheath having a neck portion, and an upstream having a plurality of independent circumferential grooves on the outer peripheral surface. Side first foil, a downstream second wheel having a plurality of independent circumferential grooves on the outer peripheral surface, and the first foil
A drive mechanism for rotating the second wheel to supply the cable wound around the concave grooves of the first and second wheels from the extruder side to the winder side, and the outlet side of the second wheel And a cable pressing belt provided in the vicinity of the groove of the self-supporting cable manufacturing apparatus. 2. A manufacturing apparatus for manufacturing a self-supporting cable in which a cable core and a supporting wire are commonly covered with a sheath having a neck portion, and an upstream having a plurality of independent circumferential grooves on the outer peripheral surface. Side first foil, a downstream second wheel having a plurality of independent circumferential grooves on the outer peripheral surface, and the first foil
A drive mechanism for rotating the second wheel to supply the cable wound around the concave grooves of the first and second wheels from the extruder side to the winder side, and the outlet side of the first wheel And a cable pressing belt provided in the vicinity of the groove of the self-supporting cable manufacturing apparatus. 3. A method for producing a self-supporting cable in which a cable core and a support wire are commonly covered with a sheath having a neck portion, wherein a cable from an extruder is provided in a plurality of upstream first foils. The first and second wheels are rotated around the circumferential groove and the plurality of circumferential grooves of the downstream second wheel to rotate the first and second wheels to press the cable in the concave groove on the outlet side of the second wheel. A self-supporting cable manufacturing method, characterized in that the cable is supplied to the winder side while being held by a belt. 4. A method for producing a self-supporting cable in which a cable core and a supporting wire are commonly covered with a sheath having a neck portion, wherein a cable from an extruder is provided in a plurality of upstream first foils. The first and second wheels are rotated around the circumferential groove and the plurality of circumferential grooves of the downstream second wheel to rotate the first and second wheels to press the cable in the concave groove on the outlet side of the first wheel. A self-supporting cable manufacturing method, characterized in that the cable is supplied to the winder side while being held by a belt.