JP4375283B2 - Manufacturing method and manufacturing apparatus of extra fine stranded wire - Google Patents

Description

  The present invention relates to a method for manufacturing an ultra fine stranded wire and an apparatus for manufacturing an ultra fine stranded wire obtained by twisting ultra fine conductors.

In recent years, a cable in which a PFA resin or the like is coated on an ultrafine twisted wire obtained by twisting ultrafine conductors by a twisting machine is used for a wiring cable or a CCD camera cable of a mobile communication terminal (for example, Patent Document 1). , 2).
As a twisting machine for twisting ultrafine conductors for manufacturing this type of cable, a plurality of supply reels 51 are arranged in series in a cylindrical rotor 52 as shown in FIG. There is known a tubular stranded wire machine in which a very thin conductor 53 fed out from a wire is led to a die 54 on one end side in the series direction of a supply reel 51 and twisted (see, for example, Patent Document 3).

JP-A-9-219115 JP 2002-352642 A JP 2001-3281 A

  However, since the above-described tubular stranded wire machine has the supply reels 51 arranged in series, the pass line of the ultrafine conductor 53 fed out from the supply reel 51 becomes long, and the length of the pass line is the length of the supply reel 51. Since the tension variation (swing width) increases as the distance from the die 54 that becomes the twisting point differs depending on the arrangement, the tension of each fine conductor 53 becomes unstable and non-uniform, and the extra fine twist to be manufactured. The quality of the wire will be degraded.

Further, since the supply reels 51 are arranged in series, the overall length of the apparatus becomes long, occupying a large installation space, and a large-capacity cylindrical roller 52 is rotated to rotate a large capacity. When a drive motor is required and an air bearing is used for the bearing, the amount of air consumed for the bearing increases.
Moreover, since the cylindrical rotor 52 is an expensive one that requires high processing accuracy, the equipment cost increases.

  Moreover, as a twisting machine different from the tubular type, a double twist stranded wire that twists twice in one rotation by passing a plurality of fine conductors through a guide arranged in an arched bow and rotating the bow. However, in this twisted wire machine, the enlargement is still unavoidable, and the extra fine conductors arranged on the outer circumference of the rotating arch-shaped bow are stretched, resulting in a decrease in quality. I will.

  The present invention is capable of producing a high-quality ultra-fine stranded wire efficiently in a small space while suppressing equipment costs, and further, a method for producing a high-quality ultra-fine stranded wire in which the twist of the ultra-fine stranded wire is stable in the longitudinal direction And it aims at providing a manufacturing apparatus.

The method for producing an ultrafine stranded wire of the present invention that can solve the above-mentioned problem is a method for producing an ultrafine stranded wire by twisting a plurality of ultrafine conductors into an ultrafine stranded wire, and a plurality of the ultrafine conductors wound thereon The supply reels are arranged on an axis inclined toward the rotation axis of the rotating plate, the fine conductors are drawn from each supply reel by a take-up device while rotating the rotating plate, and the fine conductors fed from the supply reels are drawn. The supply reel is moved along the circumferential direction along the circumferential direction, whiskers provided on the flange are rubbed out, and ultrafine conductors fed out from each supply reel are diced through guide holes formed in the eye plate. It is characterized by being concentrated in and twisted together.

An apparatus for manufacturing an ultrafine stranded wire according to the present invention that can solve the above-mentioned problems is supported by a rotating plate and a shaft attached to the rotating plate so as to be inclined toward the rotating shaft of the rotating plate. A plurality of supply reels wound with conductors , whiskers provided on the flanges of the supply reels, a eye plate having guide holes for guiding ultrafine conductors fed from the supply reels of the rotating plate, and the guide holes A die for gathering and twisting the ultrafine conductors passed through the wire, and a take-up device for taking out the ultrafine twisted wire twisted by the die.
The ultra fine stranded wire referred to in the present invention refers to AWG 36 or a stranded wire thinner than that.

  According to the present invention, the ultrafine conductor is fed out from the supply reel of the rotating plate while rotating the rotating plate, guided to the die through the guide hole of the eyeplate, and concentrated with this die. A stranded wire can be manufactured. Moreover, expensive and large-sized components can be eliminated, and manufacturing in a small space is possible while suppressing facility costs. In addition, the pass lines from the supply reels to the dies have almost the same length, and the tension of each of the fine conductors is uniform, and high-quality extra-fine stranded wires with stable twisting in the length direction can be manufactured.

Hereinafter, an example of an embodiment of a manufacturing method and a manufacturing apparatus of an ultra fine stranded wire according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing the configuration of an ultrafine stranded wire manufacturing apparatus according to the present embodiment, FIG. 2 is a cross-sectional view taken along line II of the apparatus shown in FIG. 1, and FIG. 3 is II of the apparatus shown in FIG. FIG. 4 is a cross-sectional view showing an example of the manufactured ultra fine stranded wire.

  As shown in FIG. 1, the manufacturing apparatus 11 of the ultra fine stranded wire of this embodiment has the cradle 12 as a disk-shaped rotary plate supported rotatably. The cradle 12 is rotated by a drive mechanism 13. The drive mechanism 13 includes a drive motor 14, and the drive motor 14 rotates a drive pulley 15 provided on a rotation shaft, and thereby via a transmission belt 16 meshed with the drive pulley 15. The driven pulley 17 provided at the axial center of the cradle 12 is rotated, thereby rotating the cradle 12.

  As shown in FIG. 2, a plurality (six in this embodiment) of supply reels 21 are attached to the cradle 12 on the downstream side (right side in FIG. 1). These supply reels 21 are supported by being arranged at equal intervals in the circumferential direction along the periphery of the cradle 12, and an extra fine conductor Sa is wound around each supply reel 21. A supply reel 22 around which a fine conductor Sb serving as a center line is wound is provided on the upstream side of the cradle 12 (left side in FIG. 1). The fine conductor Sb wound around the supply reel 22 is After being hung on the guide sheave 23, it is passed through an insertion hole 12 a formed on the rotating shaft of the cradle 12 and pulled out to the downstream side of the cradle 12.

On the downstream side of the cradle 12, a eye plate 24 that rotates in synchronization with the cradle 12 is provided. As shown in FIG. 3, a center line guide hole 25 is formed in the center of the eye plate 24, and a number of conductors corresponding to the supply reel 21 provided in the cradle 12 around the center line guide hole 25. Guide holes 26 are formed at equal intervals in the circumferential direction.
Then, the fine conductor Sb serving as the center line drawn from the supply reel 22 is passed through the center line guide hole 25 of the eye plate 24, and is drawn from the supply reel 21 to each conductor guide hole 26. Each fine conductor Sa is passed.

On the downstream side of the eye plate 24, a die 27 is provided as a twisting point for the ultra fine conductors Sa and Sb. The ultra fine conductor Sa passed through the center line guide hole 25 and the conductor guide hole 26 of the eye plate 24. , Sb are led to the die 27, assembled by the die 27 and twisted together to form an ultra fine stranded wire Y.
In addition, whiskers 28 formed of, for example, nylon thread are provided at the collar portion of each supply reel 21, and the whisker 28 imparts an appropriate back tension to the ultrafine conductor Sa drawn out from the supply reel 21 and loosens. Is suppressed.

On the further downstream side of the die 27, a capstan 31, a dancer roller 32, and a take-up bobbin 33 as a take-up device are provided in order along the pass line.
The capstan 31 pulls the ultra fine stranded wire Y that has passed through the die 27 while applying a predetermined tension. The extra fine stranded wire Y drawn by the capstan 31 is sent out to the take-up bobbin 33 after the amount of feed is adjusted by the dancer roller 32, and then taken up to the take-up bobbin 33 with a predetermined take-up tension.

  Then, in order to manufacture the ultra fine stranded wire Y by the above-described ultra fine stranded wire manufacturing apparatus 11, the cradle 12 is disposed after passing through the ultra fine conductors Sa and Sb in the pass line from the supply reels 21 and 22 to the winding bobbin 33. Then, the fine conductors Sa and Sb are taken downstream by the capstan 31 while the eye plate 24 is rotated. At that time, the ultrafine conductor Sb drawn from the supply reel 22 is changed in direction by the guide sheave 23 and sent to the die 27 along the rotation axis of the cradle 12. On the other hand, the fine conductors Sa drawn from the supply reels 21 arranged on the cradle 12 are sent to the dice 27 through the conductor guide holes 26 of the eye plate 24 while restricting the pass line.

  Each of the ultrafine conductors Sa and Sb guided by the eye plate 24 is sent by the dice 27 around the ultrafine conductor Sb serving as the center line while revolving around the outer periphery of the ultrafine conductor Sb. Are twisted together and drawn out as an extra fine stranded wire Y having a structure as shown in FIG. The ultra fine stranded wire Y drawn from the die 27 is taken up by the capstan 31, passes through the dancer roller 32, and is taken up by the take-up bobbin 33.

  As described above, according to the above embodiment, the fine conductors Sa and Sb are fed out from the supply reel 21 of the cradle 12 and the supply reel 22 upstream of the cradle 12 while rotating the cradle 12, and the conductor guide hole 26 of the eye plate 24. In addition, the guide line 25 is guided to the die 27 through the center line guide hole 25, and is collected and twisted by the die 27. Therefore, the pass lines of the ultrafine conductors Sa and Sb can be shortened. Moreover, since the pass line length of the ultrafine conductor Sa twisted around the ultrafine conductor Sb can be made uniform, the tension can be equalized and stabilized, and a high quality ultrafine twisted wire can be manufactured. it can.

  In addition, since it has a simple structure including the rotatable cradle 12 on which the supply reel 21 is supported, components such as an expensive and large cylindrical rotor can be dispensed with, and the equipment cost can be kept small. It can be manufactured efficiently in space. Further, since the driving force required for the drive motor 14 is smaller than that of a tubular stranded wire machine or the like, it is possible to save the operation.

  When the ultrafine conductor Sa is pulled out from the supply reel 21, the pulling start portion moves on the collar portion of the supply reel 21 along the circumferential direction. For this reason, the pass line from the supply reel 21 to the conductor guide hole 26 rotates around the rotation axis of the supply reel 21 (the path line has a conical shape). Since the movement of the pass line is regulated by passing through the conductor guide hole 26, the pass line from the eye plate 24 to the die 27 does not move relative to the rotation of the cradle 12 and the eye plate 24. However, if the direction of the pass line of the ultrafine conductor Sa is changed between the supply reel 21 and the conductor guide hole 26 along the rotation axis of the supply reel 21, the pass line from there to the conductor guide hole 26. Does not fluctuate. Thereby, the state of the ultrafine conductor Sa assembled to the die 27 can be further stabilized, and the structure of the resulting ultrafine stranded wire Y can be equalized and stabilized.

It is a schematic side view explaining the structure of the manufacturing apparatus of the twisted wire which concerns on this embodiment. It is II sectional drawing of the apparatus shown in FIG. It is II-II sectional drawing of the apparatus shown in FIG. It is sectional drawing of the strand wire manufactured by this embodiment. It is a schematic sectional drawing which shows the structure of a tubular stranded wire machine.

Explanation of symbols

11 Manufacturing Equipment 12 Cradle (Rotating Plate)
21, 22 Supply reel 24 Eye plate (eye plate)
25 Centerline guide hole (guide hole)
26 Conductor stranded wire guide hole (guide hole)
27 Dies 31 Capstan (pickup device)
33 Winding bobbin Sa, Sb Extra fine conductor Y Extra fine stranded wire

Claims (2)

A method for producing an ultra fine stranded wire by twisting a plurality of ultra fine conductors into an ultra fine stranded wire,
Place on an axis inclined a plurality of supply reels ultrafine conductor is wound toward the rotation axis of the rotary plate, pull the ultrafine conductors from each supply reel with the take off device while rotating the rotary plate, each supply The fine conductors fed out from the reels are moved along the circumferential direction on the collar of the supply reel, and the whiskers provided on the collars are rubbed and fed out. A method for producing an ultrafine stranded wire, wherein the wires are collected by a die through the formed guide holes and twisted together. A rotating plate, a plurality of supply reels supported by a shaft attached to the rotating plate so as to be inclined toward the rotating shaft of the rotating plate, and provided on a flange portion of the supply reel. Whisker, eye plate having guide holes for guiding the fine conductors fed from each supply reel of the rotating plate, a die for gathering and twisting the fine conductors passed through the guide holes, and twisted by the die And a take-up device for picking up the extra fine stranded wire.

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