JPH1139835A - Apparatus and method for drive of tape reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for the drive of a tape reel, in which a reel driving shaft can turn and drive the tape reel stably. SOLUTION: A driving apparatus is provided with a support shaft 33 which is mounted at the inside of a reel hub 24a at a tape reel in which a tape body is wound on its outer circumferential face, with a pressure means 34 which is attached to the outer circumferential face of a support shaft 33 and which presses at least a part of the inner circumferential face of the reel hub 24a and with a drive means which turns and drives the support shaft 33. In a state that the pressure means 34 presses the inner circumferential face of the real hub 24a, the support shaft 33 and the tape reel are turned and driven.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape reel driving device for rotating a tape reel, for example, for winding a tape body on a tape reel, and to a driving method for rotating the tape reel.

[0002]

2. Description of the Related Art A tape cartridge contains a pair of tape reels around which a magnetic tape as an information recording medium is wound. On the tape reel, leader tapes provided at both ends of a magnetic tape of a predetermined length are attached to a reel hub around which the magnetic tape is wound. Further, one end of the magnetic tape and one end of the leader tape are connected by attaching a splice tape. That is, the magnetic tape is connected to the pair of tape reels via the leader tape.

In forming such a tape cartridge, a magnetic tape is wound on a tape reel in advance, a method of incorporating the tape reel on which the magnetic tape is wound into the cartridge, and a method of winding the magnetic tape. Incorporate the tape reel into the cartridge without mounting it,
There is a method of winding a magnetic tape around a tape reel incorporated in a cartridge.

In the method of winding a magnetic tape around a tape reel incorporated in a cartridge, one end of the magnetic tape is attached to the tape reel incorporated in the cartridge, and the tape reel is driven to rotate in this state. As a result, the magnetic tape is wound around the rotating tape reel and wound around the tape reel.

[0005]

When a magnetic tape is wound around a tape reel using the above-described method of winding a magnetic tape around a tape reel incorporated in a cartridge, the cartridge main body is used. Is fixed at a predetermined position, and a spindle for rotating and driving the tape reel is mounted on the tape reel, and the magnetic tape is wound by rotating the spindle.

However, in this method, the spindle and the tape reel are not assembled so as to be fitted, but are assembled with a certain clearance. That is, inside the cartridge body, the tape reel is unstablely attached to the spindle.

[0007] For this reason, the position of the tape reel may be unstable in the cartridge body when the spindle is driven to rotate. In particular, when the spindle was rotated at a high speed for the purpose of improving productivity, the positional deviation of the tape reel became more remarkable.

Therefore, when this technique is used, the magnetic tape is wound around the tape reel in a state where the edge portion protrudes in the vertical direction. in this case,
The edge portion of the magnetic tape came into contact with the inside of the cartridge body and was sometimes damaged.

As a result, the magnetic tape causes dropout or damage. As described above, in the conventional winding device and the like, when winding the magnetic tape or the like on the tape reel, the tape reel cannot be driven to rotate stably, and the magnetic tape or the like cannot be wound well. There was a problem. Also,
In the conventional winding device, there is a possibility that the magnetic tape may be damaged because the magnetic tape cannot be wound well.

Accordingly, the present invention has been devised in view of such circumstances, and provides a tape reel drive device in which a reel drive shaft can stably rotate a tape reel. An object of the present invention is to provide a method for driving a tape reel.

[0011]

According to the present invention, there is provided a tape reel driving device which achieves the above-mentioned object, comprising: a spindle mounted inside a reel hub of a tape reel on which a tape body is wound around an outer peripheral surface; A pressing unit attached to an outer peripheral surface of the spindle, for pressing at least a part of an inner peripheral surface of the reel hub, and a driving unit for driving the spindle to rotate, the pressing unit rotating the inner peripheral surface of the reel hub; In the pressed state, the spindle is driven to rotate, and the tape reel is driven to rotate.

In the tape reel driving device according to the present invention configured as described above, the tape reel is attached to the support shaft. At this time, in this tape reel driving device,
The inner peripheral surface of the tape reel is pressed by pressing means attached to the outer peripheral surface of the support shaft. Thus, the tape reel is fixed to the support shaft by the pressing means. That is, in this tape reel driving device, the pressing means applies a pressing force in the direction of spreading the tape reel around the spindle, and as a result, the tape reel is stably attached to the spindle.

Further, in the tape reel driving method according to the present invention, there is provided a tape reel having a tape body wound around an outer peripheral surface thereof, a spindle mounted inside a reel hub of the tape reel, and a tape shaft attached to the outer peripheral surface of the spindle. A state in which the pressing unit is pressed against the inner peripheral surface of the reel hub using a tape reel driving device having a pressing unit that presses at least a part of the inner peripheral surface of the reel hub and a driving unit that rotationally drives the spindle. Then, the spindle is driven to rotate, and the tape reel is driven to rotate.

In the tape reel driving method according to the present invention, when assembling the tape reel to the spindle,
The inner peripheral surface of the tape reel is pressed by pressing means attached to the outer peripheral surface of the support shaft. Thus, in this method, the tape reel rotates while being fixed to the support shaft by the pressing means. That is, in this method, the pressing means applies a pressing force in the direction in which the tape reel is spread about the spindle, and as a result, the tape reel is rotationally driven with the tape reel stably attached to the spindle.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

The tape reel driving device and the tape reel driving method according to the present invention are applied to a magnetic tape winding device 1 as shown in FIG. In the tape cartridge 2 mounted on the magnetic tape winding device 1, a pair of a supply tape reel and a take-up tape reel are rotatably housed in a cartridge body. Both end portions of the leader tape 3 having a predetermined length are attached to each other. The tape cartridge 2 has a magnetic tape 4 wound thereon,
It is a so-called digital audio cassette.

As shown in FIG. 1, the magnetic tape winding device 1 includes a tape supply reel 5 on which a magnetic tape 4 having a predetermined width is wound, and a magnetic tape 4 drawn out from the tape supply reel 5. , A mounting portion 7 located at the end of the running system 6 for mounting the tape cartridge 2, and a pair of tape reels in the tape cartridge 2 mounted in the mounting portion 7 and driven to rotate. And a tape reel driving device 8.

The magnetic tape winding device 1 also includes a measuring means (not shown) for measuring the length of the traveling magnetic tape 4 and a predetermined tension applied to the traveling magnetic tape 4. A guide roller unit 9 for preventing the magnetic tape 4 from vibrating in the tape width direction; a cutting means 10 for cutting the magnetic tape 3 at a predetermined position; and a tape pull-out mechanism 11 for pulling out the leader tape 3 from the inside of the tape cartridge 5
And a control unit (not shown) for controlling the operations of these measuring means, guide roller unit 9, cutting means 10 and tape pull-out mechanism 11.

The tape supply reel 5 is attached to a rotating shaft 12 attached to a servo motor (not shown), which is located at a start end of the traveling system 6. That is, the tape supply reel 5 has a configuration in which rotational power from a servomotor is transmitted via the rotary shaft 12.

The traveling system 6 is a traveling path of the magnetic tape 4 which is led out from the tape supply reel 5 located at the start end and travels toward the mounting portion 7 located at the end.
The traveling path 6 is provided with a measuring means (not shown) at an intermediate portion thereof. This measuring means detects the traveling distance of the traveling magnetic tape 4, that is, the length of the traveling magnetic tape 4.

The traveling system 6 is provided with a guide roller unit 9 in the middle thereof. This running system 6
2, the guide roller unit 9 includes a plurality of guide rollers 9a, and applies a predetermined tension to the magnetic tape 4.

Further, the traveling system 6 is provided with a cutting means 10 located near the mounting portion 7. The cutting means 10 can cut the magnetic tape 4 traveling on the traveling system 6 at a predetermined position.

The mounting portion 7 is located at the end of the traveling system 6 described above, and accurately positions and mounts the tape cartridge 2. Although not shown in detail, the mounting portion 7 includes a plurality of positioning pins, a tape pull-out mechanism 11 for pulling out the leader tape 3 from the mounted tape cartridge 2, and a combination of the leader tape 3 and the magnetic tape 4. And a splice joining mechanism 14 to be joined.

A plurality of positioning pins are formed corresponding to the tape cartridge 2 so as to engage with the tape cartridge 2 and accurately position the tape. The tape pull-out mechanism 11 has a pair of pull-out pins that can enter the tape cartridge 2. The tape pull-out mechanism 11 has a configuration in which the pair of pull-out pins enter the tape cartridge 2 and pull out the leader tape 3 attached across the pair of tape reels. Further, the splice joining mechanism 14 includes a mechanism for holding the leader tape 3 and the magnetic tape 4 respectively,
It has a splice tape that joins the leader tape 3 and the magnetic tape 4.

As shown in FIGS. 2, 3 and 4, the tape cartridge 2 has a cartridge body 22 composed of a pair of upper and lower halves 20, 21, and a lid 23 attached to the front of the cartridge body 22. A pair of reel hubs 24 a and 24 b incorporated in the cartridge body 22;
a, and a leader tape 3 attached across the 24b. Although not shown, the tape cartridge 5 has a pair of sheets disposed on the inner surfaces of the upper half 20 and the half 21 respectively. further,
The tape cartridge 2 includes a pair of guide rollers 25 at both ends on the front surface to which the lid 23 is attached.

A lid 23 is rotatably attached to the upper half 20. The lid 23 is urged in a direction to close the front surface of the cartridge body 22. On the other hand, a slider 26 is attached to the outer surface of the lower half 21 so as to freely slide in the front direction of the cartridge body 22. The slider 26 is movable between a first position for closing the lower surface on the front side of the cartridge body 22 and a second position for opening the lower surface.

A specification detection hole 27 is formed in the lower half 21 at a corner on the rear surface side of the cartridge body 22. The specification detection hole 27 is used for identifying the tape width of the magnetic tape 4 and the specification of the cartridge when the tape cartridge 2 is loaded into the recording / reproducing apparatus.

The pair of reel hubs 24a and 24b are fitted into a reel portion 28 having a part of a substantially cylindrical peripheral surface cut out along the height direction, and a cutout portion of the reel portion 28. And a clamp portion 29. That is, the pair of reel hubs 24a and 24b are formed in a substantially cylindrical shape by combining the reel unit 28 and the clamp unit 29. The pair of reel hubs 24
a, 24b are provided on the inner peripheral surface thereof with the convex portions 3 along the circumferential direction.
0 are formed at substantially equal intervals. This projection 30
Are formed substantially parallel to the height direction of the reel unit 29.

The pair of reel hubs 24a, 24a
4b, one end of the leader tape 3 is sandwiched between the reel unit 28 and the clamp unit 29 when the clamp unit 29 is fitted to the reel unit 28. As a result, a pair of reel hubs 24a, 24a
One leader tape 3 is attached across 4b.

In the tape cartridge 2 configured as described above, the magnetic tape 4 is wound around one of a pair of reel hubs 24a and 24b to which the leader tape 3 is attached so as to be described in detail later. You.

By the way, a reel driving device 8 for rotating and driving a pair of reel hubs 24a and 24b of the tape cartridge 2 is provided in the mounting portion 7 where the tape cartridge 2 as described above is mounted.

As shown in FIGS. 5, 6 and 7, the tape reel driving device 8 has a reel support shaft 33 formed in a substantially cylindrical shape, and an outer surface formed on the outer peripheral surface of the reel support shaft 33. It comprises a pressing means 34 capable of pressing in the direction of the arrow and a servomotor (not shown) connected to the reel support shaft 23.

The reel support shaft 33 is assembled to the above-described reel hubs 24a and 24b.
It is formed in a substantially columnar shape slightly smaller in diameter than the inner diameter of 4a, 24b. The reel support shaft 33 has protrusions 35 formed on the outer peripheral surface thereof at predetermined intervals along the circumferential direction. A plurality of protrusions 35 formed on the league support shaft 33 are formed at intervals so as to face recesses between the protrusions 30 formed on the pair of reel hubs 24a and 24b.

The reel support shaft 33 has an air passage 36 formed inside, and is connected to an air supply device (not shown) installed outside. In the reel support shaft 33, a pressing means 34 is provided at the end of the air passage 36 via an air reservoir 37.

The pressing means 34 is located between the convex portions 35 formed on the outer peripheral surface of the reel support shaft 33, and is configured to cover the above-mentioned air reservoir 37 with an elastic material. That is, the pressing means 34 is configured such that air is supplied to the inside. Here, as the elastic material forming the pressing means 34, for example, silicon rubber can be used.

In the reel driving device 8, the pressing means 34 may be formed on at least a part of the outer peripheral surface of the reel support shaft 33, and need not be formed on the entire surface. In other words, the pressing means 34 does not need to be formed all over the convex portions 35, but may be formed at least at one location between the convex portions 35.

The reel driving device 8 thus configured
6 and 7, the reel hubs 24a, 24a of the tape cartridge 2 attached to the attaching portion 7
Assemble b. At this time, the reel driving device 8 is configured such that the substantially columnar reel support shaft 33 has the cylindrical reel hubs 24a and 24a.
Enter the center of 4b. At this time, the protrusions 35 formed on the outer peripheral surface of the reel support shaft 33 and the reel hubs 24a, 24
The protrusions 30 formed on the inner peripheral surface of the b.

In the tape cartridge 2 mounted on the mounting portion 7, the lid 23 pivots in a direction to open the front surface of the cartridge body 22, and the slider 26 moves to the second position. And the lower surface on the front side are open. Thereby, the leader tape 3 stored in the cartridge main body 22 is exposed to the outside.

At this time, in the reel driving device 8, as shown in FIG.
4a and 24b are disposed at positions facing the convex portions 30 formed on the inner peripheral surfaces. In the reel driving device 8, a predetermined amount of air is supplied from the air supply device through the air passage. As a result, the air is supplied to the air reservoir 37 formed on the outer peripheral surface of the reel support shaft 33, and the pressing means 34 is expanded outward.

As shown in FIG. 8, the pressing means 34 presses the convex portions 30 formed on the inner peripheral surfaces of the reel hubs 24a and 24b by expanding outward. As a result, the pair of reel hubs 24a and 24b is securely fixed to the reel driving device 8.

As described above, when the tape cartridge 2 is mounted on the mounting portion 7, the tape pull-out mechanism 11 enters the opened front surface of the tape cartridge 2. Then, the tape pull-out mechanism 11 pulls out the leader tape 3 from the front surface of the tape cartridge 2. Next, the leader tape 3 pulled out is cut at a predetermined position by the cutting means 10. Then, the leader tape 3 is pulled out from each of the pair of reel hubs 24a and 24b, and enters the splice joining mechanism 14.

In the splice joining mechanism 14, one of the leader tapes 3 pulled out from the reel hubs 24a and 24b is joined to the magnetic tape 4 and the other is held. At this time, the splice joining mechanism 14 joins a so-called splice tape to the end of one of the leader tapes 3 and the end of the magnetic tape 4 led out from the tape supply reel 5. Thereby, one of the leader tapes 3 and the magnetic tape 4 can be spliced.

When the magnetic tape 4 is wound,
The reel hub 24a to which the leader tape 3 to which the magnetic tape 4 has been attached is attached is rotationally driven. At this time, in order to rotate the reel hub 24a, the reel hub 24a
Is rotated by a servo motor. Thus, the magnetic tape 4 is wound around the reel hub 24a after the leader tape 3 is wound.

The length of the magnetic tape 4 wound around the magnetic tape 4 is measured by a measuring means, and when the predetermined length is wound, the running of the magnetic tape 4 is stopped. Then, the magnetic tape 4 is cut at a predetermined position by the cutting means 10. The end of the magnetic tape 4 formed by this cutting is joined to the end of the leader tape 3 attached to the other reel hub 24b by the splice joining mechanism 14. As a result, the magnetic tape 4 is separated from the pair of reel hubs 24a and 24b.
And is stored in the cartridge body 22.

In the magnetic tape winding device 1, as described above, the magnetic tape 4 is connected to the pair of reel hubs 24a and 24a.
b, the reel support device 3 drives the reel support shaft 3
3 and the reel hub 24a are rotationally driven. As described above, in the magnetic tape winding device 1, the reel driving device 8 can rotate the reel support shaft 33 and the reel hub 24a integrally since the reel support shaft 33 can securely fix the reel hub 24a. Can be done.

Therefore, in this reel driving device 8,
With the rotation of the reel support shaft 33, the pair of reel hubs 24
The pair of reel hubs 24a and 24b are driven to rotate at predetermined positions without causing any positional displacement between the reel hubs 24a and 24b. For this reason, the magnetic tape 4 is satisfactorily wound around the reel hub 24a without being shifted in the width direction of the magnetic tape 4. This magnetic tape winding device 1
In this case, the magnetic tape 4 can be satisfactorily wound around the reel hub 24a in this manner, so that the magnetic tape 4 is not damaged.

In particular, in this magnetic tape winding device 1,
Even if the reel support shaft 33 is driven to rotate at high speed, the reel hub 2
4a does not move in the height direction. Therefore, the magnetic tape 4 is wound around the reel hub 24a without shifting in the tape width direction. For this reason, the wound magnetic tape 4 does not have scratches at both ends in the width direction, and as a result, the occurrence of dropout can be suppressed.

The present invention is not limited to the above embodiment, but may be applied to a magnetic tape winding device as shown in FIG. The magnetic tape winding device shown in FIG. 9 includes a reel support shaft 40 formed in a substantially cylindrical shape, pressing means 41 attached to the outer peripheral surface of the reel support shaft 40, and rotation of the reel support shaft 40. A reel drive unit 42 including a servo motor (not shown) to be driven is provided.

In the reel driving device 42, the pressing means 41 is disposed at a predetermined height of the reel support shaft 40 along the circumference. The pressing means 41 has an air passage and an air reservoir formed in the reel support shaft 40 in the same manner as the pressing means 34 of the reel driving device 8 described above, and expands outward when air is supplied. have.

The reel driving device 4 configured as described above
In the magnetic tape winding apparatus provided with the reel 2, the reel support shaft 40 is incorporated into the center hole of the pair of reel hubs 24a and 24b. At this time, in the reel driving device 42, FIG.
As shown in FIG.
a, 24b are pressed against the inner peripheral surface. That is, the pressing means 41 enters into the concave portion between the convex portions 30 formed on the inner peripheral surface of the reel hub 24a, and entirely presses the inner peripheral surface of the reel hub 24a in the circumferential direction. This ensures that the pressing means 41 securely connects the reel hub 24 a to the reel support shaft 4.
Can be fixed to zero.

In the above description, the tape reel driving device according to the present invention is applied to a tape winding device. However, the tape reel driving device according to the present invention is not limited to this. May be applied to a recording / reproducing device that performs recording / reproducing. That is, the tape reel driving device according to the present invention may be applied to any device as long as it is necessary to securely fix the tape reel on which the tape body is wound and to rotate the tape reel satisfactorily.

The apparatus for winding a magnetic tape according to the present embodiment includes, for example, an audio cassette such as an audio microcassette, a video cassette such as a VHS system, a beta system and an 8 mm system, a digital video cassette, and a data cassette. Of course, the present invention can be applied to other tape cartridges such as cassettes and tape reels.

[0053]

As described in detail above, in the tape reel driving device according to the present invention, the tape reel is pressed by the pressing means attached to the reel spindle to be securely fixed to the reel spindle. Thus, in this reel driving device, the reel support shaft and the tape reel are integrally driven to rotate. For this reason, the tape reel driving device can stably rotate the tape reel without causing a displacement.

According to the tape winding device and the tape reel driving method of the present invention, the tape reel driving device as described above is used, so that the tape reel can be driven to rotate stably. Therefore, according to this tape winding device, the tape can be satisfactorily wound around the tape reel.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a tape winding device using a tape reel driving device according to the present invention.

FIG. 2 is a perspective view of a tape cartridge used in the tape winding device.

FIG. 3 is an exploded plan view of the tape cartridge.

FIG. 4 is an enlarged side view of a main part of the reel hub of the tape cartridge.

FIG. 5 is a plan view of a reel support shaft of the tape reel driving device according to the present invention.

FIG. 6 is an essential part exploded plan view showing a state where a reel hub is incorporated into the reel spindle.

FIG. 7 is a longitudinal sectional view of a main part showing a state where a reel hub is incorporated into the reel spindle.

FIG. 8 is a main part transverse sectional view showing a state where a reel hub is incorporated in the reel spindle.

FIG. 9 is a cross-sectional view of a main part showing a state in which a reel hub is incorporated in a reel support shaft in another reel drive device according to the present invention.

[Explanation of symbols]

Reference Signs List 1 winding device, 2 tape cartridge, 3 leader tape, 4 magnetic tape, 5 tape supply reel, 6 running system, 7 mounting section, 8 reel drive device, 9 guide roller unit, 10 cutting means, 24 reel hub, 2
8 reel part, 29 clamp part, 33 reel support shaft,
34 pressing means

Claims (5)

[Claims] 1. A spindle mounted inside a reel hub of a tape reel around which a tape body is wound on an outer peripheral surface, and at least a part of an inner peripheral surface of the reel hub attached to an outer peripheral surface of the spindle. And a driving unit for rotating the spindle. The spindle is driven to rotate while the pressing unit presses the inner peripheral surface of the reel hub, and the tape reel is driven to rotate. A tape reel drive device characterized by the above-mentioned. 2. An inner peripheral surface of the reel hub is formed with irregularities in a circumferential direction, and an outer peripheral surface of the spindle is
The pressing means is attached to a concave portion formed on the outer peripheral surface of the support shaft and presses a convex portion formed on the inner peripheral surface of the reel hub. The tape reel driving device according to claim 1. 3. The pressing means is made of an elastic material attached so as to cover a part of the outer peripheral surface of the support shaft, and air is supplied into a portion covered by the elastic material, whereby the pressing means is provided. 2. The tape reel drive according to claim 1, wherein the elastic material expands outward and presses the inner peripheral surface of the reel hub. 4. A tape supply reel on which a tape body is wound and rotatably disposed, a traveling system serving as a traveling path of the tape body derived from the tape supply reel, and a traveling system disposed at an end of the traveling system. And a mounting portion for mounting a tape cassette having a pair of tape reels in which a tape body is wound. The tape reel driven from the tape supply reel is wound by rotating the tape reel. The tape reel drive device according to claim 1, wherein the drive is performed. 5. A spindle mounted inside a reel hub of a tape reel around which a tape body is wound on an outer peripheral surface, and at least a part of an inner peripheral surface of the reel hub attached to an outer peripheral surface of the spindle. Using a tape reel driving device having a pressing means for pressing and a driving means for rotating and driving the support shaft, and rotating the support shaft while pressing the pressing means against the inner peripheral surface of the reel hub; A tape reel driving method characterized by rotating a tape reel.