JPH085594B2 - Tape tension control device for tape winding machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tape tension control device for a tape winding machine that winds a tape around various wire rods.

(Prior Art) Generally, a tape winding machine includes a taping head that is rotated around an axis of a wire on which the tape is to be wound, and a tape fed from a tape pad on the taping head is a guide attached to the taping head. It is wound around the wire through the rod. In the prior art, the tape fed from the tape pad on the taping head changes the voltage of the hysteretic brake according to the change in the diameter of the pad to apply a predetermined tension. In addition, this hysteresis brake is a measuring instrument that measures the measuring length of the wire wound with tape, a counter that counts the output from this measuring instrument, and a predetermined measuring length. It was controlled by a control device consisting of a tension controller that gradually reduces the voltage applied to the hysteresis brake. The output of the tension controller is supplied to the power controller,
This power controller directly controls the applied voltage of the hysteresis brake to control the hysteresis brake. The length of the tape wound on the wire appears as a change in the diameter of the tape pad, but the change rate (decrease rate) when the diameter is large and when it becomes small is different, so an appropriate tension is obtained. Therefore, it is difficult to adjust the tension artificially in the middle, and the tape portion between the guide rod and the wire receives a large wind pressure as the taping head speed increases. was there.

On the other hand, the tape tension with a dancer roll that measures the outer diameter of the wire wound with the tape, compares the measured value of this outer diameter with the set value, and displaces according to the comparison value to adjust the tape tension. A control device is known (see Japanese Utility Model Publication No. 47-28348).

However, the dancer roll is apt to be displaced by the tape applied to it and the wind pressure received by the dancer roll itself, and the tension of the tape becomes unstable, so that the tension of the tape cannot be controlled with high accuracy. .

(Object of the Invention) An object of the present invention is to provide a tape tension control device for a tape winding machine that does not require artificial correction and can eliminate the influence of wind pressure.

(Structure of the Invention) A tape tension control device for a tape winding machine according to the present invention is a tape feeder which is arranged in the vicinity of a wire rod and is fed from a taping head of the tape winding machine to feed a tape before being wound on the wire rod. And an outer diameter measuring device for measuring the outer diameter of the wire wound with the tape, and a driving means for driving the tape feeder when the output of the outer diameter measuring device exceeds a set outer diameter deviation. It is characterized by having.

According to this device, an artificial correction is required because the tension is controlled by driving the tape feeder that feeds the tape fed from the tape pad according to the change in the outer diameter of the wire around which the tape is wound. Never. Also, unlike the dancer roll, the tape feeder does not displace itself to control the tension, but feeds the tape to control the tension, so that the feeding changes even if the tape receives wind pressure. In addition, the change in the tension applied to the tape due to the wind pressure is blocked from the wire rod, so that the tape can be wound around the wire rod with a predetermined tension. In addition, the tape dispenser
Since it is placed near the wire on which the tape is to be wound, the tape sent out from the tape feeder is not affected by wind pressure because it is located at a low peripheral speed, and therefore, on the downstream side of the tape feeder. It is possible to reliably wind the tape with a predetermined tension without causing fluctuations in the tape tension.

(Example) An example of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a tape winding machine 12 equipped with a tape tension control device 10 according to the present invention. The tape winding machine 12 comprises a taping head 18 rotated around an axis of a wire 16 on which a tape 14 is to be wound. The tape 14 is unwound from the tape pad 20 attached to the taping head 18 and wound around the wire 16.

As shown in FIGS. 1 and 2, the tape tension control device 10 of the present invention comprises a tape 14 fed from a tape pad 20.
A tape feeder 22 such as a pinch roller for feeding the tape 14 before the tape is wound on the wire 16, an outer diameter measuring device 24 for measuring the outer diameter of the wire 16 on which the tape 14 is wound, and an outer diameter An arithmetic unit 26 for detecting that the output of the measuring device 24 exceeds the set outer diameter deviation and a driving means 30 for driving the servo motor 28 for the tape feeder 22 by the output of the arithmetic unit 26 are provided. There is. The tape feeder 22 is, as shown in FIG.
The tape 14 is arranged near the wire 16 to be wound. In the illustrated embodiment, the computing unit 26 does not generate an output when the output of the outer diameter measuring device 24 is within the set outer diameter deviation, but when the output exceeds this deviation, the analog / analog unit has a dead zone. In the form of a digital converter,
Other forms may be used as long as they have the same function.
In FIG. 1, reference numeral 32 is a guide rod attached to the taping head 18 to guide the tape 14 fed from the tape pad 20, and reference numeral 34 in FIG. 2 is an outer diameter measuring instrument.
It is an outside diameter indicator that displays the outside diameter signal from 24.

Next, referring to the operation of the apparatus of the present invention, the tape 14 is passed from the tape pad 20 through the guide rod 32 and the tape feeder 22 onto the wire 16 according to the rotation of the taping head 18 and the traveling speed of the wire 16. It is wound at a predetermined pitch. On the other hand, the outer diameter of the wire 16 around which the tape 14 is wound is measured by the outer diameter measuring device 24, and the outer diameter signal is supplied to the calculator 26 while being displayed by the outer diameter display 34, and the calculator 26 is outside. When the diameter signal exceeds a predetermined deviation, an output is generated and the driving means 30 is operated. Therefore, the servomotor 28 for the tape feeder 22 is
Is driven to apply a predetermined tension to the tape 14.

Since the tape feeder 22 sends out the tape 14 to control the tension, even if the tape 14 receives wind pressure on its upstream side and the tension is changed, the change in the tension is cut off from the wire rod 16, and thus the tape is attached to the wire rod 16. 14 can be wound with a predetermined tension. Further, since the tape feeder 22 is arranged in the vicinity of the wire 16 on which the tape 14 is to be wound, the tape 14 fed from the tape feeder 22 is in a position where the peripheral speed is low and is affected by wind pressure. Therefore, the tension of the tape 14 does not fluctuate on the downstream side of the tape feeder 22.
The wire 14 can be reliably wound around the wire 16 with a predetermined tension.

In the illustrated embodiment, a hysteresis brake 36 for braking the tape pad 20 provided on the taping head 18 is provided as in the conventional case, and the hysteresis brake 36 is an output from a scale 38 in the form of a pulse generator. Is activated via the frequency / voltage converter 40, the tension controller 42 and the power regulator 44. However, the device of the present invention can be similarly applied to a tape winding machine that does not have this hysteresis brake.

In one embodiment of the present invention, the outer diameter measuring instrument 24 measures the outer diameter D of the wire around which the tape is wound, and the outer diameter indicator 34 gives a deviation signal of ± 10 v when the outer diameter D is ± 0.1 mm. Out of the standard outside diameter D ± 0.3mm by the calculator 26 ± 0.1
A dead zone of mm is provided, and an output is provided to the driving means 30 only when the deviation signal exceeds this dead zone.

(Effect of the Invention) According to the present invention, as described above, the tension is driven by driving the tape feeder that feeds the tape fed from the tape pad according to the change in the outer diameter of the wire on which the tape is wound. Since the control is performed, the tension of the tape can be properly controlled regardless of the change in the diameter of the tape pad, so that no artificial correction is required. In particular, the tension of the tape wound around the wire is controlled by the tape feeder that feeds the tape, not by the dancer roll that controls the tension by position displacement, so the tape receives wind pressure on the upstream side and the tension is controlled. Even if it changes, the change in tension is cut off from the wire rod,
Therefore, the tape can be wound around the wire with a predetermined tension. Further, since the tape feeder is arranged in the vicinity of the wire on which the tape is to be wound, the tape fed from the tape feeder is at a low peripheral speed position and is not affected by wind pressure. There is a practical advantage in that the tape can be wound around the wire with a predetermined tension without causing fluctuation of the tape tension on the downstream side of the tape feeder.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a tape winding machine equipped with a tape tension control device according to the present invention, and FIG. 2 is a schematic system diagram of the tape tension control device of the present invention. 10 …… Tape tension controller, 12 …… Tape winding machine, 14 …… Tape, 16 …… Wire, 18 …… Taping head, 20 …… Tape pad, 22 …… Tape feeder, 24 …… Outer diameter measurement Bowl, 26 ...
… Calculator, 28 …… Servo motor, 30 …… Drive means.

Claims (1)

[Claims] 1. A tape winding machine for winding a tape wound around a wire rod on which the tape is to be wound around the axis of the wire rod around the wire rod, the tape winding machine being arranged in the vicinity of the wire rod and fed out from the taping head. The tape feeder for sending the tape before being wound around the wire rod, the outer diameter measuring device for measuring the outer diameter of the wire rod around which the tape is wound, and the output of the outer diameter measuring device are set. And a driving means for driving the tape feeder when the deviation of the outer diameter is exceeded.