JP6379734B2 - Tape tension control method and tape winding material manufacturing method - Google Patents

Description

  The present invention relates to a tape tension control method, and more specifically, a tape tension control method for winding a tape fed from a tape reel around an outer periphery of a conductor, and a tape whose tension is controlled by the tape tension control method. It is related with the manufacturing method of the tape winding material wound around.

  2. Description of the Related Art A tape winding apparatus that winds a tape such as an insulating tape around a wire such as a core wire made of a conductor is known. In this tape winding apparatus, the tape is unwound from a tape reel on which the tape has been wound in advance, and is continuously wound around the traveling wire. At this time, if the tension of the tape is not constant, the winding shape of the tape varies and the dielectric constant of the tape portion is affected.

  Regarding the tension control of the tape when the tape is wound around the wire, for example, Patent Document 1 discloses that the rotation axis torque of the tape pad is reduced as the tape is fed out from the tape pad (tape reel) around which the tape is wound. A technique is disclosed in which the feeding tension of the tape is made constant by performing a decrease control.

JP 2006-202495 A

In Patent Document 1, control is performed to automatically and gradually reduce the axial torque applied to the tape reel in accordance with the amount of tape reduction by calculating the required axial torque based on the pulses generated according to the rotation of the drive motor. Is going.
However, in order to accurately control the tension of the tape, it is important to more accurately detect the tape winding diameter that changes when the tape is fed out, and to perform the tension control based on this.

  The present invention has been made in view of the circumstances as described above, and a tape tension control method capable of adjusting the tension applied to the tape when continuously winding the tape around the wire, and It aims at providing the manufacturing method of the tape winding material which winds the tape of which tension was controlled by the tape tension control method around the wire.

In the tape tension control method according to the present invention, the tape reel on which the tape is wound is rotated to feed the tape from the tape reel, and the torque of the rotation axis of the tape reel is controlled to feed the tape reel from the tape reel. A tape tension control method for controlling the tension of the tape reel , wherein the tape reel is fed out by a flyer provided on a tape winding flyer substrate that is individually driven to rotate in the same direction as the tape reel, and the tape reel is fed to a flange portion of the tape reel. A light sensor provided with a light reflecting portion partially in the circumferential direction of the flange, and irradiating the light reflecting portion with light when the flange rotates, and providing reflected light on the flyer substrate side. The number of rotations of the tape reel is calculated based on the detected period of reflected light, and the tape reel table is calculated based on the calculated number of rotations of the tape reel. The winding diameter is calculated, and imparts a predetermined torque to the rotation axis of said tape reel in accordance with the winding diameter of the tape was the calculated, a tape tension control method.

  The method for producing a tape winding material according to the present invention is a method for producing a tape winding material in which the tape is wound around an electric wire or cable by controlling the tension by the tape tension control method described above.

  According to the present invention, a tape tension control method capable of adjusting the tension applied to the tape when the tape is continuously wound around the wire, and a tape whose tension is controlled by the tape tension control method. The manufacturing method of the tape winding wire wound around a wire can be provided.

It is a figure which shows schematically the structure of the principal part of the tape winding apparatus to which this invention is applied. It is another figure which shows schematically the structure of the principal part of the tape winding apparatus to which this invention is applied. It is a block diagram which shows the structure for performing tension control of a tape based on the output signal of a photoelectric sensor. It is a timing chart for demonstrating the rotation detection principle by a sequencer. It is a figure which shows the example of control of the brake voltage which controls the brake torque of a hysteresis brake.

First, embodiments of the present invention will be listed and described.
(1) In the tape tension control method of the present application, the tape reel on which the tape is wound is rotated to feed the tape from the tape reel, and the torque of the rotation axis of the tape reel is controlled to be fed from the tape reel. A tape tension control method for controlling the tension of the tape, wherein the tape reel is fed out by a flyer provided on a tape-winding flyer substrate that is individually driven to rotate in the same direction as the tape reel. A light reflecting portion is partially provided in the circumferential direction of the flange portion, and when the flange portion rotates, the light reflecting portion is irradiated with light, and the reflected light is provided on the flyer substrate side. The number of rotations of the tape reel is calculated based on the detected period of reflected light, and the tape reel table is calculated based on the calculated number of rotations of the tape reel. The winding diameter is calculated, and imparts a predetermined torque to the rotation axis of said tape reel in accordance with the winding diameter of the tape was the calculated, a tape tension control method. This makes it possible to adjust the tension applied to the tape when the tape is continuously wound around the wire.

  (2) It is preferable that the torque applied to the rotating shaft of the tape reel is a torque that acts as a brake torque with respect to a driving torque that drives the rotating shaft. Thus, a specific configuration suitable for torque control can be obtained.

  (3) The manufacturing method of the tape winding material of this application is a manufacturing method of the tape winding material which controls tension | tensile_strength by said tape tension control method, and winds the said tape around an electric wire or a cable. Thereby, when manufacturing a tape winding material by winding a tape continuously around an electric wire or a cable, it is possible to adjust a tension applied to the tape.

[Details of the embodiment of the present invention]
Specific examples of the tape tension control method and the tape winding material manufacturing method according to the present invention will be described below with reference to the drawings. In addition, this invention is not limited to these illustrations, is shown by the claim, and includes all the changes within the meaning and range equivalent to a claim.

1A and 1B schematically show the configuration of the main part of a tape winding apparatus to which the tape tension control method of the present invention and a method of manufacturing a tape winding material for winding a tape around a wire by this tape tension control method are applied. FIG. 1A is a schematic side view of the tape winding device, and FIG. 1B is a schematic perspective view of the flange 15 of FIG.
1A and 1B, 1 is a tape winding device, 10 is a wire, 11 is a tape, 12 is a tape winding material, 13 is a tape reel, 14 is a tape reel shaft, 15 is a flange, 16 is a tape-wrapped flyer substrate, 17 is a flyer, 18 is a hysteresis brake, 19 is a reflective tape, 20 is a photoelectric sensor, and 21 is a window.

  The tape winding apparatus 1 is an apparatus that manufactures a tape wound wire 12 in which a tape 11 is wound around a wire 10 traveling at a predetermined speed at a constant pitch, and the wire 10 is covered with the tape 11. As the wire 10, for example, a narrow bare conductive wire, a conductive wire provided with an insulating coating, a shielded electric wire whose outermost layer is a shield layer, or the like is applied. Further, as the tape 11, an insulating tape such as paper or resin, a metal foil tape obtained by attaching or evaporating a metal foil to a resin base material, etc. are used, for example, a thin tape having a thickness of several tens of μm, Various things are used.

In the tape winding apparatus 1, the tape reel shaft 14 is supported so as to be rotatable about its axis. A flange 15 for supporting the tape reel 13 around which the tape 11 is wound is attached to the tape reel shaft 14. Then, the tape reel 13 is mounted on the tape reel shaft 14 and fixed. Therefore, the flange portion 15 rotates together with the tape reel 13 around the tape reel shaft 14.
An insertion hole penetrating in the longitudinal direction of the shaft center is formed at the center of the tape reel shaft 14, and the wire 10 is inserted into the insertion hole to run.

The tape-wrapped flyer substrate 16 is supported on the upstream side in the axial direction of the tape reel shaft 14 (on the supply side of the wire 10) so as to be rotatable about the traveling path of the wire 10. A free-rotating flyer 17 is provided at the outer end of the tape-wrapped flyer substrate 16.
The tape 11 fed out from the tape reel 13 mounted on the tape reel shaft 14 turns outside the flyer 17 and is wound around the wire 10 at a certain angle.

The tape reel shaft 14 and the tape winding flyer substrate 16 are driven by a drive motor (not shown) so as to be able to rotate individually. The tape reel shaft 14 feeds the tape from the tape reel 13 mounted on the tape reel shaft 14 while rotating around the traveling path of the wire 10. The flyer 17 rotates so as to turn around the tape reel shaft 14, and the tape 11 is wound around the wire 10 traveling in the axial direction in a spiral shape. The tape reel shaft 14 and the tape winding flyer substrate 16 are individually driven to rotate and rotate in the same direction at different speeds. The difference in rotational speed is due to the difference between the diameter of the tape reel 13 and the diameter of the rotation locus of the flyer 17. The tape reel shaft 14 is rotationally driven with a constant driving torque.
The tape winding wire 12 in which the tape 11 is wound around the wire 10 is then taken up at a constant traveling speed by a take-up device (not shown) and taken up on a take-up reel.

  With the above configuration, the tape winding diameter of the tape 11 wound around the tape reel 13 gradually decreases as the winding around the wire 10 progresses, so the tension of the tape fed out from the tape reel 13 changes. . That is, since the tape reel shaft 14 is driven with a constant torque, the tape tension increases as the tape winding diameter decreases. If the tape tension is too high, the tape will break, and if it is too weak, the wire is loosely wound. For this reason, the tape tension needs to be controlled to be constant at a predetermined tension set in advance.

  In the embodiment according to the present invention, a hysteresis brake 18 for applying a brake torque to the tape reel shaft 14 and a photoelectric sensor 20 for detecting the rotation of the tape reel 13 are provided. Further, in order to detect the rotation speed of the tape reel 13 by the photoelectric sensor 20, the reflective tape 19 is partially attached in the circumferential direction to the flange portion 15 that supports the tape reel 13.

The photoelectric sensor 20 corresponds to the optical sensor of the present invention, and includes a light projecting element such as an LED and a light receiving element such as a photodiode, and receives reflected light of light emitted from the light projecting element. Then, an electric signal that changes according to the amount of received light is output. The light emitting unit and the light receiving unit may be separated. The photoelectric sensor 20 may be installed outside the flyer substrate 16 (on the left side of the flyer substrate 16 in FIG. 1A) by making a hole in the flyer substrate 16.
Here, as shown in FIG. 1A, a window 21 that is a through hole is provided in the flyer substrate 16. The position of the window 21 is a position where the light emitted from the photoelectric sensor 20 is irradiated .
The reflective tape 19 corresponds to the light reflecting portion of the present invention, and is affixed to a part of the circumferential direction of the collar 15, and when the collar 15 rotates, the photoelectric sensor 20 is affixed to the reflective tape 19. The reflected light of the applied part and the reflected light of the non-attached part are alternately detected in synchronization with the rotation, and a periodic pulse signal is output. Based on this, the number of rotations of the tape reel 13 can be calculated.

The hysteresis brake 18 is provided with a rotating ring made of a magnetic material having a high magnetic permeability with respect to the tape reel shaft 14, and a magnetic flux flowing through a yoke that sandwiches the rotating ring in a non-contact manner passes through the rotating ring. Magnetic friction is generated between them and the brakes are made differential. The hysteresis brake 18 is suitable for torque control because there is no mechanical contact and a torque corresponding to the excitation current is obtained.
Here, the tape reel diameter is calculated from the number of rotations of the tape reel 13 calculated based on the output signal of the photoelectric sensor 20 and the tape thickness, and the brake torque by the hysteresis brake 18 is controlled in accordance with the diameter, whereby the tape The tension can be maintained at a predetermined constant value.

FIG. 2 is a block diagram showing a configuration for performing tape tension control based on the output signal of the photoelectric sensor in the tape winding apparatus of FIG.
An output signal from the photoelectric sensor 20 is input to a sequencer 31 that constitutes the control unit 30. Here, the sequencer 31 detects and calculates the rotation of the tape reel 13 based on the output signal from the photoelectric sensor 20.

The principle of rotation detection by the sequencer 31 will be described with reference to the timing chart of FIG. Here, the photoelectric sensor employs pulse-modulated light and repeats light projection from the light projecting element at a constant period ((A) in the figure).
The period of time reflected by the reflective tape 19 is detected based on the difference in the amount of light between the reflected light of the reflective tape 19 and the reflected light of the portion without the reflective tape 19 ((B) in the figure). One period of the reflection tape detection period corresponds to one rotation period of the tape reel 13 that rotates integrally with the flange 15. The sequencer 31 measures this one rotation period and calculates the winding diameter of the tape reel 13. (Illustration (C)).

In the control unit 30 of FIG. 2, the tension command signal output from the sequencer 31 is input to the tension controller 32. The tension controller 32 controls the brake torque of the hysteresis brake 18 based on the input tension command signal.
Here, the sequencer 31 is preset with the outer diameter (tape winding diameter) of the tape reel 13 and the tape thickness. The sequencer 31 calculates the current tape winding diameter using the tape winding diameter and tape thickness in the initial state, and gives a tension command for controlling the brake torque of the hysteresis brake to the tension controller 32 based on the calculated tape winding diameter. Outputs a brake voltage to keep the tension of the tape fed from the tape reel 13 constant.

The brake voltage for controlling the brake torque of the hysteresis brake 18 is controlled as shown in FIG. 4, for example. When the tape reel shaft 14 rotates at a constant driving torque, the tension of the tape fed out from the tape reel 13 increases as the tape winding diameter of the tape reel 13 decreases.
Therefore, the larger the tape winding diameter, the greater the brake voltage and the greater the brake torque applied to the tape reel shaft 14, and the greater the tape tension. The position of the winding diameter f in FIG. 4 indicates the brake voltage when the tape reel 13 is in the initial state. In the figure, b is a range in which the brake voltage is changed according to the winding diameter, and a is a range corresponding to the core diameter of the tape reel 13 and is a range in which the brake voltage is constant regardless of the winding diameter.

  As the tape is unwound and the tape winding diameter is reduced, the brake voltage is gradually reduced, so that the brake torque to the tape reel shaft is reduced. Compensation is achieved by reducing the brake torque so that the tape can be fed out at a constant tape tension regardless of the tape winding diameter.

  The tension controller 32 may perform acceleration / deceleration correction based on a predetermined acceleration / deceleration parameter when outputting the brake voltage of the hysteresis brake 18. By performing acceleration / deceleration correction, abrupt fluctuations in brake torque are suppressed and tape tension is stabilized.

  Further, the remaining amount of tape wound around the tape reel 13 can be accurately monitored using the winding diameter of the photoelectric sensor 20 described above.

DESCRIPTION OF SYMBOLS 1 ... Tape winding apparatus, 10 ... Wire rod, 11 ... Tape, 12 ... Tape winding wire rod, 13 ... Tape reel, 14 ... Tape reel axis | shaft, 15 ... Hip part, 16 ... Flyer board | substrate, 17 ... Flyer, 18 ... Hysteresis brake, DESCRIPTION OF SYMBOLS 19 ... Reflective tape, 20 ... Photoelectric sensor, 21 ... Window, 30 ... Control part, 31 ... Sequencer, 32 ... Tension controller.

Claims (3)

A tape tension control method for controlling the tension of the tape fed from the tape reel by rotating the tape reel around which the tape is wound and feeding the tape from the tape reel, and controlling the torque of the rotation axis of the tape reel. The tape reel is fed out by a flyer provided on a tape-winding flyer substrate that is individually driven to rotate in the same direction as the tape reel, and a part of the tape reel in the circumferential direction of the flange is A light reflecting portion is provided, and when the collar rotates, the light reflecting portion is irradiated with light, and the reflected light is detected by a light sensor provided on the flyer substrate side . The tape reel rotation number is calculated based on the period, the tape reel tape diameter is calculated based on the calculated tape reel rotation number, and the calculated tape reel Imparting a predetermined torque to the rotation axis of said tape reel in accordance with the winding diameter, the tape tension control method.   The tape tension control method according to claim 1, wherein the torque applied to the rotation axis of the tape reel is a torque that acts as a brake torque with respect to a drive torque that drives the rotation axis.   A manufacturing method of a tape winding material which controls tension by the tape tension control method according to claim 1 or 2, and winds the tape around an electric wire or cable.

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