JPS62175387A - Wire winding machine - Google Patents

Abstract

PURPOSE:To avoid troubles of breakage, entanglement or the like of wire at starting and stopping of a winding machine by drawing out the wire through a wire guide arm disposed above a wire feed bobbin rotatable in a unit with a hollow shaft and adapted to be rotatable with a predetermind level of friction torque relative to the hollow shaft. CONSTITUTION:A drain wire feed bobbin 4 is mounted on a flyer 8 having a hollow portion through which an electric cable 6 extends, and is rotated by a motor 1. A wire guide arm 12 is provided above the bobbin 4 to be rotatable with a predetermined level of friction torque relative to a hollow rotary shaft 9. A drain wire 7 drawn from the feed bobbin 4 travels through a ceramic die 14 mounted to the guide arm 12 to be wound around the electric cable 6. The guide arm is rotatable relative to the hollow rotary shaft 9, and the rolling friction torque imparts a certain tensile force to the drain wire 7. As the guide arm is much lighter than the feed bobbin 4, overrun at starting and stopping of the winding machine can be minimized, avoiding entanglement, breakage or the like of the wire.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a wire winding device, and more specifically, it is used for winding a drain wire around the outer periphery of an outer conductor of a coaxial cable for a computer, for example. This relates to a striatal body wrapping device.

[Prior Art] Conventionally, there has been one shown in FIG. 2 as an example of a winding device for winding a drain wire around a coaxial cable.

That is, with respect to the fryer 2 which is forcibly rotated by the motor 1, the drain wire supply bobbin 4 is rotatably provided by a bearing 3, and via a guide pulley 5 which is fixed to the flyer 2 and rotates together with the flyer 2, A drain wire 7 is wound around the outer periphery of an electric wire 6 running in the hollow part of the flyer 2.

[Problems to be Solved by the Invention] However, in the conventional drain wire winding device of this kind, the drain wire 7 is wound around the drain wire supply bobbin 4, so the mold assembly is heavy, and the drain wire winding device cannot be operated by, for example, an induction motor. When started, the rotation rate of the flyer 2 is high, but as mentioned above, the weight of the supply bobbin 4 is large, so there is a drawback that a large force is required to rotate the supply bobbin 4 to follow the flyer 2. .

Further, since the supply bobbin 4 is rotated and accelerated by the tension of the drain wire 7, there is a risk that excessive tension is generated in the drain wire 7 and the drain wire 7 is stretched or broken.

Furthermore, if the winding device is suddenly stopped for some reason, the supply bobbin 4 is supported by the bearing 3 so that it can rotate easily, so even if the flyer 2 is stopped, the supply bobbin 4 will continue to rotate due to inertia, and the drain wire There was also the drawback that 7 could become loose and the wires could get tangled.

In order to solve these drawbacks, it has been proposed to use a variable speed motor as motor 1 and take time for acceleration and deceleration. must be stopped,
Therefore, with the conventional winding device structure, it has not been possible to solve problems such as wire entanglement during sudden stops.

Furthermore, as the drain wire 7 wound around the supply bobbin 4 is consumed, the wire winding diameter becomes smaller, but if the brake torque of the supply bobbin 4 is kept constant, the tension of the drain wire 7 gradually increases. Another drawback was that the winding device had to be stopped from time to time during production to adjust the brakes.

[Means for Solving the Problems] An object of the present invention is to eliminate the drawbacks of the prior art described above, to eliminate troubles such as wire breakage and wire tangles during startup and stop, and to enable a larger drain wire supply bobbin. To provide an excellent wire winding device in which the winding tension is relatively constant even if the winding diameter of a supply bobbin changes, and furthermore, an inexpensive induction motor can be used as a drive motor. There is a particular thing.

That is, the gist of the present invention is a device for wrapping a second filament around the outer periphery of a central filament, and the device is arranged vertically and has a hollow portion inside thereof through which the central filament passes. a rotating hollow shaft provided; a second filament body supply bobbin attached to the hollow shaft so as to rotate together with the hollow shaft; It is composed of a filament guide arm that rotates with a frictional torque of
The second filament body is drawn out from the supply bobbin and wound around the outer periphery of the central filament body via the filament guide arm by forcibly rotating the filament body supply bobbin with an electric motor. Located in the striatal wrapping device.

[Example] Next, an example of the filament wrapping device of the present invention will be further described with reference to FIG.

8 is arranged vertically, and has a hollow part 9 in which the electric wire 6 passes.
A drain wire supply bobbin 4 is fixedly attached to the fryer 8, and a motor 1
It is now forced to rotate.

As a method of fixing and attaching the supply bobbin 4 to the flyer 8, for example, a protrusion 10 is provided on the surface of the flyer 8, a recess 11 is provided on the supply bobbin 4, and the two are fitted together. The flyer 8 and the supply bobbin 4 are rotated together by the rotation of the motor 1.

Reference numeral 12 denotes a linear guide arm for pulling out the drain wire 7 from the supply bobbin 4, which is disposed above the drain wire supply bobbin 4 and is rotatably attached to the hollow rotating shaft 9 while having a predetermined friction torque.

In addition, 13 is the hollow rotation of the guide arm 12! tjlt1
These balance weights are provided at symmetrical positions with the guide arm 9 in between, and are used to adjust the guide arm 12 so that it rotates smoothly with a predetermined friction torque with respect to the rotating shaft 9.

14 is a ceramic die provided on the guide arm 12, and the drain wire 7 is supplied through the die 14.

Then, when the electric wire 6, which has an internal conductor coated with an insulator on the outer circumference and a shield braid on the outer circumference, is run on the hollow shaft 9, and the supply bobbin 4 and the flyer 8 are rotated by the motor 1, the guide The arm 12 also rotates relative to the rotating hollow shaft, and the drain wire 7 is wound around the outer periphery of the electric wire 6 while a predetermined tension is applied to the drain wire 7.

As a result of an experiment, the ceramic die 14 at the tip of the drain wire inlet attached to the guide arm 12 is about 0.0 mm from the upper surface of the lower flange, assuming that the inner width of the supply bobbin 4 is W.
It has become clear that the position 6W is optimal, and that the drain wire 7 can be smoothly supplied at this position.

The guide arm 12 is connected to a conventional drain wire supply bobbin 4.
It is much lighter compared to
Since overrun during stopping can be suppressed to a minimum, there is no need to use a variable speed motor as a drive motor, and an inexpensive induction motor can be used.

In addition, the guide arm 12 rotates relative to the rotating hollow shaft 9, and tension is applied to the drain wire 7 by rotational torque of the guide arm 12, so the tension of the drain wire 7 is constant regardless of the winding amount of the supply bobbin 4. It remains approximately constant.

In the above description of this embodiment, only a device for winding a drain wire around the outer periphery of the electric wire has been described, using an electric wire as the central filament and a drain wire as the second filament. The invention can be similarly applied to a body wrapping device, and the present invention should not be construed as being limited by this embodiment.

[Effects of the Invention] The filament wrapping device of the present invention as described above has the following advantages, and its industrial value is extremely great.

(1) It is possible to provide an excellent wire-wrapping device that does not cause wire breakage, wire tangles, etc. even when the winding device is started or stopped.

(2) Since there is no influence due to the inertia of the supply bobbin, the second filament supply bobbin can be made larger and the manufacturing work becomes easier.

(3) Even if the winding amount of the supply bobbin changes, the winding tension of the filament remains constant, and there is no need to stop the equipment and adjust the supply bobbin braking force during production, improving production efficiency. do.

(4) An inexpensive induction motor can be used as the drive motor, and there is no need to worry about wire breakage or wire tangles even when sudden acceleration or sudden stops occur.

(5) Since the device structure is simple, it is inexpensive.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the filament wrapping device of the present invention, and FIG. 2 is an explanatory diagram showing an example of a conventional filament wrapping device. 1: Motor, 2: Flyer, 3: Bearing, 4: Drain wire supply bobbin, 5 Ni guide pulley, 6: Electric wire, 7: Drain wire, 8: Flyer, 9: Hollow rotating shaft, 10: Convex part, 11: Concave part, 12 Ni Guide arm, 13: Balance weight, 14: Ceramic dice

Claims (1)

[Claims] (1) A device for wrapping a second filament around the outer periphery of the central filament, which consists of a rotating hollow shaft that is arranged vertically and has a hollow portion inside which the central filament passes; A second filament supply bobbin is attached to the hollow shaft so as to rotate together with the hollow shaft, and the second filament supply bobbin rotates with a predetermined friction torque with the hollow rotating shaft above the second filament supply bobbin. ,
It is composed of a filament guide arm that pulls out the second filament body, and the hollow shaft and the second filament supply bobbin are forced by an electric motor against the central filament body running inside the hollow rotating shaft. A filament winding device characterized in that the second filament body is pulled out from a supply bobbin and wound around the outer periphery of the central filament body via a filament guide arm by rotating the central filament body.