JPH06127771A - Tape taking-up device - Google Patents

Abstract

PURPOSE:To take up a tape wound on a taking-up side roller at a high speed and in a correct length without. using a length measuring roller. CONSTITUTION:A tape taking-up device is equipped with the first driving motor 17a having an encoder 16a installed on a feed-out side roller 11 and the second driving motor 17b having an encoder 16b installed on a taking-up side roller 12, in order to carry out taking-up with a prescribed tension and in a prescribed length on a hub where a tape 13 installed on the feed-out roller 11 is installed on a taking-up side roller 12 through a tension device 10. The driving motors 17a and 17b are connected with a control part 18, and the encoders 16a and 16b are connected with a calculation processing part 19 through an encoder output detecting part 16c. Further, the calculation processing part 19 and the control part 18 are electrically connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape winding device for winding a tape having a large diameter and a long length attached to a feed roller on a hub attached to a take-up roller at a predetermined length.

[0002]

2. Description of the Related Art As a cassette tape used for recording video and audio, a large-diameter long tape is manufactured first,
This tape having a large diameter and a long length is rewound to a predetermined length by a tape winding device. For example, 100 or more products are continuously manufactured from one large-diameter long tape.

When winding a product of a predetermined length from a large-diameter long tape in the tape winding device, recording of images and sounds,
Alternatively, it is necessary to wind the tape with a predetermined tension so that a problem does not occur during reproduction, and to keep the tape length of the wound tape within a predetermined range.

As shown in FIG. 5, a conventional tape winding device 1 includes a delivery side roller 2 to which a tape wound in a large diameter and a long length is attached, and a hub for winding the large diameter long tape. And a tension which makes the tension of the tape 4 which is disposed between the feeding side roller 2 and the winding side roller 3 and which is wound around the winding side roller 3 a predetermined value. It comprises a device 5 and a measuring device 6 for measuring the length of the tape 4 wound around the winding side roller 3.

The tension device 5 includes a spring 5a.
A rotatable tension roller 5c is provided at the tip of the rotatable arm member 5b biased by the rotary arm member 5b, and the tension roller 5c is provided at a midpoint between the feeding side roller 1 and the winding side roller 2. The tape 4 is wound around the tape 4, and the urging force of the spring 5a attached to the arm member 5b and the pulling force of the tape wound around the delivery side roller 2 and the take-up side roller 3 are balanced to each other. Giving tension.

On the other hand, the measuring device 6 includes a measuring roller 6a.
And a odometer 6b that detects the rotation of the measuring roller 6a to measure the rotational distance, and the tape 4 wound around the winding-side roller 3 and the measuring roller 6a make contact and rotate. The rotation distance of the roller 6a is measured by the rotation distance meter 6b to measure the length of the wound tape. Then, when the tape 4 wound around the winding side roller 3 reaches a predetermined length, the tape running from the sending side roller 2 to the winding side roller 3 is stopped.

[0007]

As described above, in the conventional tape winding device, the tape wound around the hub attached to the winding side roller with a predetermined tension rotates the measuring roller, and The rotation of the measuring roller is detected by a rotary distance meter so that the length of the tape wound around the hub attached to the winding-side roller becomes a predetermined length.

However, if the running speed of the tape wound around the take-up side roller is set to a high speed in order to shorten the working time, the rotation of the measuring roller cannot follow the running speed of the tape and slippage occurs. It becomes impossible to accurately measure the length of the tape wound around the take-up side roller by detecting the rotation of the measuring roller with the rotation distance meter. For this reason, the running speed of the tape wound around the winding-side roller is limited.

Further, since the running speed of the tape is rapidly accelerated and decelerated at the time of starting and ending the winding of the tape, the inertial mass generated from the measuring roller at this time winds the tape on the winding side roller. There is a problem that slippage occurs between the tape and the measuring roller as the tension of the tape varies.

The present invention has been made in view of the above circumstances, and it is possible to wind a tape wound around a winding-side roller at a high speed and at an accurate length without using a measuring roller. An object of the present invention is to provide a tape winding device that can be used.

[0011]

A tape winding device according to the present invention comprises a first drive motor for driving a feed-side roller, and a second drive motor for driving a winding-side roller.
First rotation detecting means for detecting rotation of a first drive motor provided on the feed-side roller, and second rotation detecting means for detecting rotation of a second drive motor provided on the winding-side roller. A tension device that winds the middle of the tape wound between at least a pair of rollers around a tension roller provided on an arm member and sets the tension of the tape wound around the winding side roller to a predetermined value. The rotation angle of the first drive motor detected by the first rotation detection means and the rotation angle of the second drive motor detected by the second rotation detection means are arithmetically processed and wound on the winding side roller. And a controller for controlling the first drive motor and the second drive motor based on the result of the arithmetic processing unit.

[0012]

With this structure, first, the tape attached to the delivery side roller is hung over the winding side roller via the tension roller of the tension device. Then, the drive motors provided on the feed-side roller and the winding-side roller are rotated to apply a predetermined tension to the tape wound on the winding-side roller and wind the tape. At this time, the rotation length of the drive motor provided on the feeding side roller and the winding side roller is detected by the rotation detecting means to obtain the tape length of the tape wound around the winding side roller. Then, when the length of the tape wound around the winding side roller reaches a predetermined length, the winding of the tape is ended by a signal from the control unit.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 relate to an embodiment of the present invention, and FIG. 1 is an explanatory view showing a schematic structure of a tape winding device,
FIG. 2 is an explanatory diagram showing the positional relationship of the tapes of the tape winding device, and FIG. 3 is an explanatory diagram showing the state of the tape wound around the hub of the winding roller.

As shown in FIG. 2, the tape winding device 10 of the present invention winds the feeding-side roller 11 to which a tape wound in a large diameter and a long length is mounted, and the tape wound in a large diameter and a long length. Roller 12 for mounting hub 21 to be mounted
And a tension device 14 for applying a predetermined tension to the tape 13 wound around the hub.

The tension device 14 includes a spring 1
The rotatable tension roller 14c is provided at the tip of the rotatable arm member 14b biased by 4a.
A displacement detector 14d is arranged at the rear end of the arm member 14b. Then, the tension roller 14c provided on the arm member 14b is wound around the tape 13 which is stretched between the tape guiding rollers 15 to form the arm member 1
The arm member 14b is suspended at a predetermined position by the urging force of the spring 14a attached to the winding roller 4b to give a predetermined tension to the tape 13 wound around the winding-side roller 12.

As shown in FIG. 1, the delivery side roller 11
Is provided with a first drive motor 17a having an encoder 16a as a first detecting means, and the winding side roller 12 is provided with a second drive motor 17a having an encoder 16b as a second detecting means. A motor 17b is provided. The first drive motor 17a and the second drive motor 17b are connected to the control unit 18, while the encoder 16a and the second encoder 16a for detecting the rotation of the first drive motor 17a are connected.
16b for detecting the rotation of the drive motor 17b of
Through the encoder output detector 16c
Connected to. Further, the displacement detector 14d of the tension device 14 rotates due to a difference between the amount of tape wound around the winding side roller 12 and the amount of tape delivered from the delivery side roller 11. The displacement of the member 14b is detected and the detected value is output to the arithmetic processing unit 17. The arithmetic processing unit 17 and the control unit 18 are electrically connected.

The operation of the tape winding device 10 configured as described above will be described. First, the delivery side roller 1
A tape 13 wound in a large diameter and a long length is attached to 1, and the outer diameter of the hub 21 is input to the controller 18.
Then, one end of the tape 13 is attached to the tape winding device 1
The tape winding device 10 is positioned at a predetermined position of 0 and the operation switch (not shown) of the tape winding device 10 is turned on.

Next, the first drive motor 17a and the second drive motor 17b of the tape winding device 10 are driven,
The tape 13 is a guide roller 15 and a tension roller 1.
Hub 21 attached to the take-up side roller 12 via 4c
Will be wrapped around.

At this time, as shown in FIG. 3, the tape is wound around the hub 21 attached to the take-up side roller 12 with a substantially constant tension. The pitch is equal.

The winding pitch is set to the winding side roller 12
Since the amount of tape wound around the tape is equal to the amount of tape delivered from the delivery side roller 11, the encoder 16
The arithmetic processing unit 17 obtains the rotation angles of the sending-side roller 11 and the winding-side roller 12 detected by a.16b and the hub diameter input to the control unit at the start of the work. Further, the rotation angle of the winding side roller corresponding to the target length of the tape wound around the winding side roller can be obtained.

When the amount of the tape wound on the hub reaches a predetermined length, a signal is output from the arithmetic processing unit to the control unit to end the winding of the tape.

As described above, the work of one cycle by the tape winding device is completed, but the hub is continuously replaced and the winding work is continuously performed.

As described above, by inputting the outer diameter of the hub, the rotation angle of the delivery side roller and the rotation angle of the winding side roller to the arithmetic processing unit, the hub is mounted on the hub attached to the winding side roller. The rotation angle with respect to the predetermined length of the tape can be calculated.

That is, the tape winding device 1 of this embodiment
A value of 0 can determine the tape length of the tape wound around the take-up side roller without providing a measuring device using the measuring roller, and due to the slip between the measuring roller and the tape due to high speed running of the tape. Since the problem of measurement error is eliminated, the rotational speeds of the first drive motor and the second drive motor can be rotated at high speed, and the tape winding speed can be increased.

Further, since the influence of the inertial mass of the measuring roller is eliminated, the tape wound around the winding side roller can be rapidly accelerated and decelerated. In addition, tape 1
Since tape 3 does not come into contact with the measuring roller, tape 1
The damage given to 3 can be greatly reduced.

Further, since the tape length of the tape 13 wound around the take-up side roller 12 and the tape length of the tape 13 delivered from the delivery side roller 11 are the same, the rotation angle of the delivery side roller 11 is By comparing the rotation angle of the take-up roller 12 with the arithmetic processing unit 17, the management of the tape length of the tape wound on the take-up roller and the tape 1 wound on the feed-side roller 11 are performed.
The winding remaining amount of 3 can be managed.

The hub 21 attached to the winding-side roller 12 can be easily produced by injection molding or the like, and the hub 21 having a substantially perfect circle can be manufactured to a predetermined size by controlling the mold precision and molding conditions. Can be obtained within tolerance.

By the way, for example, the diameter L of a tape wound in a large diameter and a long length in the initial state, the diameter l of the tape wound on the winding side roller by a predetermined amount, and the rotation of the delivery side roller per revolution. When the change amount (pitch) p1 of the feed diameter and the change amount (pitch) p2 of the winding diameter per one rotation of the winding side roller are unknown, the hub diameter is formed within the predetermined dimensional tolerance. During the winding operation, the rotation angle θ1 of the feeding side roller and the rotation angle θ2 of the winding side roller are sampled and input to the arithmetic processing unit to be calculated, so that they are wound into a large diameter and long length which was an unknown number. The diameter L of the tape
The diameter l when wound on the winding side roller by a predetermined amount, and the amounts of change p1 and p2 of the winding diameter per rotation can be calculated.

The unknown parts are not limited to the diameter L of the large-diameter long tape, the diameter l of the tape when wound, and the change amount p per one rotation. With the diameter of the long tape as a known value and the diameter l1 of the hub as an unknown number, the diameter l1 of this hub and the diameter l of the tape when wound and the variations p1 and p2 per revolution are calculated. be able to.

FIG. 4 is an explanatory view showing a schematic structure of a tape winding device according to a modification of the above embodiment. As shown in the figure, in the tape winding device of this embodiment, for example, the roller portion of the winding side roller 12 and the hub 21 and the tape 13 wound around the hub 21 are attached to, for example, the laser light irradiation portion 3.
1a and a laser light receiving portion 31b are provided as a pair to irradiate laser light with a laser displacement measuring device 31, and the reflected light reflected by the hub 21 or the tape 13 is provided at a predetermined position. Displacement measuring means capable of measuring the displacement by being incident on 31b is provided. The other structure is the same as that of the above embodiment.

By providing the tape winding device with the laser displacement measuring device 31 as the displacement measuring means as described above, the diameter of the hub 21 is detected every time the hub 21 is reattached to the winding side roller 12.

That is, by providing the displacement measuring means at a predetermined position, the laser displacement measuring instrument 3 can be operated without inputting an initial value such as the diameter of the hub 21 to the control section 18.
1 and 1st encoder 16a and 2nd encoder 16b
From this, the tape length of the tape 13 wound around the take-up side roller 12 can be calculated from the detected value input to the arithmetic processing unit 17.

The displacement amount for each winding can be detected by periodically using the displacement measuring means while winding the tape. Other functions and effects are similar to those of the above-mentioned embodiment.

[0035]

As described above, according to the present invention, the tape length of the tape wound around the winding-side roller can be wound up at a high speed and at an accurate length without using a measuring roller. A tape winding device can be provided.

[Brief description of drawings]

FIG. 1 to FIG. 3 relate to an embodiment of the present invention, and FIG. 1 is an explanatory view showing a schematic configuration of a tape winding device.

FIG. 2 is an explanatory diagram showing a positional relationship of tapes of a tape winding device.

FIG. 3 is an explanatory diagram showing a state of a tape wound around a hub of a take-up roller.

FIG. 4 is an explanatory diagram showing a schematic configuration of a tape winding device according to a modified example of the invention.

FIG. 5 is an explanatory diagram showing a schematic configuration of a tape winding device according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Sending side roller 12 ... Winding side roller 14 ... Tension device 14c ... Tension roller 14d ... Displacement detection device 16a ... 1st encoder (1st rotation detection means) 16b ... 2nd encoder (2nd rotation detection) Means) 17a ... first drive motor 17b ... second drive motor 18 ... control unit 19 ... arithmetic processing unit

Claims (1)

[Claims] 1. A first drive motor for driving a feed-side roller, a second drive motor for driving a take-up roller, and a first drive motor for detecting rotation of a first drive motor provided on the feed-side roller. 1 rotation detecting means, 2nd rotation detecting means for detecting the rotation of the 2nd drive motor provided on the winding side roller, and at least the middle of the tape wound between the pair of rollers as an arm member A tension device that winds around a tension roller provided and sets the tension of the tape wound around the take-up side roller to a predetermined value, and the rotation of the first drive motor detected by the first rotation detection means. Angle and a rotation angle of the second drive motor detected by the second rotation detection means to calculate the winding length of the tape wound on the winding side roller, and this calculation. A tape winding device comprising: a control unit that controls the first drive motor and the second drive motor based on a result of the processing unit.