JPH0637265B2 - Drain wire winding device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a drain wire winding device for winding a drain wire around an outer conductor of an outer conductor of a coaxial core of a coaxial cable for a computer, for example.

[Conventional technology]

FIG. 2 shows an example of a conventional drain wire winding device. The drain wire supply bobbin 4 is rotatably supported on the flyer 2 by a bearing 3, and a guide pulley 5 that rotates together with the flyer 2 is provided around the drain wire supply bobbin 2. The electric wire 6 is
While running through the hollow shaft of the flyer 2, the drain wire 7 is arranged to be drawn out from the drain wire supply bobbin 4 and wound around the outer periphery of the electric wire 6 via the guide pulley 5, and the guide pulley 5 is driven by the motor 1. The drain wire 7 is pulled out while swirling around the drain wire supply bobbin 4 by the forced rotation of the guide wire 5, and the drain wire 7 is wound around the outer circumference of the electric wire 6 by swiveling the guide pulley 5. Then, the drain wire supply bobbin 4 is pulled by the pulling force of the drain wire 7 based on the guide pulley 5,
It follows the flyer 2 and rotates.

[Problems to be solved by the invention]

In the conventional drain wire winding device shown in FIG. 2,
When the flyer 2 is rotated by starting the motor 1 using an induction motor or the like, the rotation increase rate (rotational acceleration) of the flyer 2 increases, but the drain wire supply bobbin 4 has a weight (mass) due to the winding of the drain wire 7. ) Is considerably large, a large force is required to follow the flyer 2 and rotate and raise it. However, the drain wire 7 is connected to the drain wire supply bobbin 4.
Since the rotation is accelerated by the tension of 1, the drain wire 7 itself has an excessive tension, which causes the drain wire 7 to be stretched or cut.

Also, if you stop the operation of the device suddenly for some reason,
The flyer 2 and the guide pulley 5 can be forcibly stopped from rotating, but the drain wire supply bobbin 4 that has already been rotationally accelerated is supported by the bearing 3 and continues to rotate due to inertial force, and the drain wire 7 loosens and the drain wire It caused problems such as Tangle of 7.

As mentioned above, in the conventional drain wire winding device. There was a problem when suddenly accelerating and decelerating. Therefore, it has been considered to adopt a variable speed motor as the motor 1 and take time for acceleration and deceleration, but the variable speed motor is expensive, and when trouble occurs, it suddenly stops (rapid deceleration). Therefore, the drain wire winding device having the conventional structure cannot avoid the problem such as the entanglement of the drain wire at the time of sudden stop.

Further, as the drain wire 7 wound around the drain wire supply bobbin 4 is consumed, the winding diameter of the drain wire in the drain wire supply bobbin decreases, but if the brake of the drain wire supply bobbin is constant, the tension of the drain wire 7 gradually increases. . Therefore, it was sometimes necessary to stop the operation of the winding device and adjust the brakes.

[Means for solving problems]

The present invention solves the above-mentioned problems of the prior art and starts up,
There are no problems such as disconnection and wire entanglement when stopped, the drain wire supply bobbin can be made larger, and the wire tension is relatively constant even when the wire winding diameter of the drain wire supply bobbin changes. An object of the present invention is to provide a drain wire winding device that can use an inexpensive induction motor as a motor.

That is, the drain wire winding device of the present invention is a device for winding a drain wire (7) around an outer circumference of an electric wire (6) as shown in FIG. 1 of the accompanying drawings, and the device has a hollow portion through which the drain wire is passed. And a rotating hollow shaft (9) arranged such that its hollow portion is vertical,
A drain wire supply bobbin (4) mounted so as to rotate together with the rotary hollow shaft on a flyer (8) that rotates integrally with the rotary hollow shaft, and a motor (forcibly rotating the rotary hollow shaft and the drain wire supply bobbin). 1)
And a guide arm (12) for a drain wire that rotates while having a predetermined rotational friction torque with respect to the rotating hollow shaft at the upper part of the drain wire supply bobbin, the guide arm having a tip end of the drain wire supply bobbin. By installing a die (14) that extends laterally and allows the drain wire to pass therethrough, and by mounting a halance weight (13) at a portion on the opposite side with the rotating hollow shaft interposed,
It is characterized in that a predetermined frictional force is applied to the rotary hollow shaft and the drain wire can be rotated relative to the rotary hollow shaft while passing through the die.

〔Example〕

FIG. 1 shows a preferred embodiment of the drain wire winding device according to the present invention.

The drain wire supply bobbin 4 is attached so as to rotate together with the rotary hollow shaft 9 by being locked against rotation on the flyer 8 integrated with the rotary hollow shaft 9 arranged vertically. Therefore, the flyer 8 is provided with a convex portion 10 and the collar portion of the drain wire supply bobbin 4 is provided with a convex portion 11 so that the concave portion 10 and the convex portion 11 are fitted to each other. Therefore, when the rotary hollow shaft 9 is forcibly rotated by the motor 1, the drain wire supply bobbin 4 linked via the flyer 8 is also forcibly rotated.

12 is a drain wire supply bobbin 4 to a drain wire 7
Is a guide arm for winding the drain wire around the outer circumference of the electric wire 6 and is rotatably attached to the rotary hollow shaft 9 above the drain wire supply bobbin 4 with a predetermined friction torque. That is,
The guide arm 12 has a drain wire supply bobbin 4 at the tip.
The ceramic die 14 is extended to the side of the rotary hollow shaft 9 and the balance weight 13 is attached to the opposite side of the rotary hollow shaft 9 so that the guide arm 12 itself can be moved to the left and right of the rotary hollow shaft 9. The weight is balanced, and the frictional force of the guide arm 12 with respect to the rotating hollow shaft 9 is obtained by the weight of the balance weight and the guide arm (and die).

The position of the die 14 at the inlet of the drain wire attached to the tip of the guide arm 12 is about 0.6 W above the upper surface of the lower collar, where W is the inner width between the upper and lower collars of the drain wire supply bobbin 4. It has been confirmed by the experimental results that the drain wire can be supplied smoothly.

[Action]

The electric wire 6 which is the core of the coaxial cable runs through the hollow portion of the rotary hollow shaft 9, while the drain wire 7 is pulled out from the drain wire supply bobbin 4 through the die 14 at the tip of the guide arm 12 and wound around the outer circumference of the electric wire 4. To The rotating hollow shaft 9 is forcibly rotated by the rotation of the motor 1, and at the same time, the drain wire supply bobbin 4 which is integrally rotated via the flyer 8 is also forcibly rotated. At this time, the guide arm 12 rotates relative to the drain wire supply bobbin 4, but since the guide arm 12 receives a predetermined rotational friction torque between the guide arm 12 and the rotary hollow shaft 9, tension is applied to the drain wire 7. Since the rotational friction torque between the guide arm 12 and the rotary hollow shaft 9 is substantially constant, the tension of the drain wire 7 is substantially constant regardless of the drain wire winding amount of the drain wire supply bobbin. Further, since the mass of the guide arm 12 can be reduced, it is easy to accelerate due to the rotational friction torque between the guide arm and the rotary hollow shaft described above.
You can slow down. Therefore, the guide arm can be rapidly accelerated even if a motor that rapidly accelerates, such as an induction motor, is used as the motor 1, so that excessive tension is not applied to the drain wire and, conversely, it is not loosened.

〔The invention's effect〕

According to the drain wire winding device of the present invention having the above configuration and operation, the effects listed below can be obtained.

(1) Drain wire disconnection and wire entanglement are eliminated when the winding device is started and stopped.

(2) The influence of rotation due to the inertia of the drain wire supply bobbin is eliminated, and the drain wire supply bobbin can be upsized.

(3) Even if the drain wire winding amount of the drain wire supply bobbin changes, the tension applied to the drain wire becomes constant, and it is not necessary to stop the operation of the device during work to adjust the drain wire bobbin brake, improving manufacturing efficiency. .

(4) Since there is no concern about wire breakage or wire entanglement even with sudden acceleration or sudden stop, an inexpensive induction motor can be used as a drive motor.

(5) It is inexpensive because the device structure is simple. In particular, the guide arm 12 is adapted to rotate while having a rotational friction torque with respect to the rotary hollow shaft, and has its tip extended to the side of the drain wire supply bobbin 4 and located on the opposite side with the rotary hollow shaft 9 interposed therebetween. Balance weight 13 in part
By attaching a fixed frictional force to the rotating hollow shaft, it is possible to freely rotate the drain wire relative to the rotating hollow shaft while passing the drain wire through the die. It does not need to be particularly complicated, and the guide arm need only be installed so that it can be mounted on the rotating hollow shaft at a required position with the weight applied to itself.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing an embodiment of a drain wire winding device according to the present invention, and FIG. 2 is a sectional explanatory view showing an example of a conventional drain wire winding device. In the reference numeral, 1 is a motor, 4 is a drain wire supply bobbin, 6 is an electric wire, 7 is a drain wire, 8 is a flyer, 9 is a hollow hollow shaft, 10 is a convex portion, 11 is a concave portion, 12 is a guide arm, 1
3 is a balance weight and 14 is a die.

Front Page Continuation (72) Inventor Yukihiro Sagawa 5-1-1 Hidaka-cho, Hitachi City, Ibaraki Hitachi Cable Co., Ltd. Hidaka Plant (72) Inventor Takashi Tsutsui 5-1-1 Hidaka-cho, Ibaraki Prefecture No. 1 Hitachi Cable Co., Ltd. Hidaka Plant (72) Inventor Yoshio Yokoyama 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture Hitachi Cable Co., Ltd. Hidaka Plant (72) Inventor Shinzo Tadokoro Ibaraki Hitachi 5-1-1 Hidakacho, Ichi, Hitachi, Ltd. (56) References JP-A-48-41165 (JP, A) JP-A-55-43790 (JP, U)

Claims (1)

[Claims] 1. A device for winding a drain wire (7) around an outer circumference of an electric wire (6), the device having a hollow portion through which the drain wire is inserted, and the hollow hollow shaft arranged such that the hollow portion is vertical. (9),
A drain wire supply bobbin (4) mounted so as to rotate together with the rotary hollow shaft on a flyer (8) that rotates integrally with the rotary hollow shaft, and a motor (forcibly rotating the rotary hollow shaft and the drain wire supply bobbin). 1)
And a guide arm (12) for a drain wire that rotates while having a predetermined rotational friction torque with respect to the rotating hollow shaft at the upper part of the drain wire supply bobbin, the guide arm having a tip end of the drain wire supply bobbin. By installing a die (14) that extends laterally and allows the drain wire to pass through, and by attaching a balance weight (13) at a portion on the opposite side with the rotating hollow shaft interposed,
A drain wire winding device characterized in that it can rotate relative to the hollow hollow shaft while giving a predetermined frictional force to the rotary hollow shaft while allowing the drain wire to pass through the die.