JPH0210598Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Present Invention] The present invention relates to a reel holding device for holding a reel of magnetic tape or the like.

More specifically, the present invention is a tape recorder, a magnetic tape device, a magnetic tape winding device, etc., which are often equipped with a reel without a flange. The present invention relates to a reel holding device useful for.

[Description of Background and Prior Art] FIG. 1 schematically shows a reel A with a flange and a reel B without a flange. In FIG. 1, A is a reel with a flange in which a magnetic tape 1 is sandwiched between flanges 3, and B is a reel without a flange in which the magnetic tape is simply wound around a winding core 2.
At the same time, a magnetic tape 1 is wound around a winding core 2.
In addition, the winding core is provided with a mounting hole 4,
It can be attached to a reel holding device 5 as shown in FIG.

A conventional reel holding device 5 shown in FIG. 2 includes a reel mounting shaft 6, a reel holding portion 7, a lever 8, a tape receiving tray 9, and the like. The reel holding part 7 is made of a rubber material, and when the lever 8 is moved in the direction shown by the arrow 10, the reel holding part 7 is pushed outward and expanded.
and the mounting hole 4 of the winding core 2 are in tight contact with each other, so that the reel is fixed.

The tape receiving tray 9 is a disc-shaped tray for receiving the magnetic tape so that it will not fall apart even if the tape ends are slightly unraveled when a reel without a flange as shown in FIG. 1B is installed. .

In addition, as a conventional reel holding device similar to the reel holding device of the present invention, there is one in which the height of the entire reel holding device can be adjusted using an adjustment screw.

[Disadvantages of the prior art] By the way, in the conventional reel holding device as shown in FIG. 2, the running stability of the tape and the
There were significant shortcomings in the protection of the tape.

The main cause is not the reel holding device, but rather the reel.
In the case of a reel as shown in FIG. B, the magnetic tape 1 may not be wound around the center of the winding core 2. That is, as shown in FIG. 1B, the width of the winding core 2 is slightly wider than the width of the magnetic tape 1, and there is no problem if the magnetic tape 1 is wound around the center of the winding core 2, but in reality, it is not always the case that the width of the winding core 2 is wider than the width of the magnetic tape 1. is not wrapped.

Further, although the magnetic tape 1 is wound over the winding core 2, the winding is often disordered. Under the above circumstances, when a reel as shown in FIG. 1B is attached to the conventional reel holding device 5 shown in FIG. 2, the reel is placed on the tape tray 9, but normally the tape It is the bottom surface 11 of the winding core 2 of the reel that comes into contact with the top surface 12 of the saucer 9. Therefore, the height of the magnetic tape 1 relative to the tape receiving tray 9 changes depending on the winding position of the magnetic tape 1 relative to the winding core 2 of the reel. This means that
This means that the position of the tape is not always constant and varies depending on the reel, and since the tape guide that guides the magnetic tape is in a fixed position, the hardness of the magnetic tape relative to the tape guide does not match. This causes instability in tape running.

Another disadvantage is that if the magnetic tape 1 wound around the winding core 2 is irregularly wound, the tape tray 9 and the magnetic tape 1 may come into contact with each other, and in this state, the magnetic tape 1 When the magnetic tape 1 ran, the edges of the magnetic tape 1 were sometimes damaged.

Further, although the conventional method for adjusting the height of the entire reel holding device is complicated, the latter drawback cannot be solved.

[Purpose of the present invention] The present invention relates to improving the conventional reel holding device under the above circumstances. The object is to obtain a reel holding device whose height is constant, and furthermore, to obtain a reel holding device in which the magnetic tape and the tape tray do not come into contact with each other as much as possible.

[Structure of the present invention] In order to achieve the above object, the present invention includes a reel holding mechanism that fixes a reel, and a reel magnet that is capable of protruding from the reel attached to the reel holding mechanism and that is in a protruding state. This reel holding device includes a tape positioning mechanism that contacts the tape portion.

[Operations and effects of the present invention] To describe the functions of the present invention as described above, the reel is held by the reel holding mechanism, and when the reel is held by the reel holding mechanism, the magnetic tape positioning mechanism The magnetic tape is positioned by protruding from the reel.

[Example of the present invention] Next, embodiments of the present invention will be described.

FIG. 3 shows a first embodiment of the present invention. To explain its structure, in FIG. 3, 1 is a magnetic tape, 2 is a winding core, and a reel consisting of the magnetic tape 1 and the winding core 2 is shown mounted on a reel mounting shaft 6. Reel mounting shaft 6
is attached to the drive shaft 13, and a tape receiving tray 9 is attached to the reel mounting shaft 6. The lever 8 is rotatable about the shaft 14 and can be locked in two positions: lever 8 and lever 8'. A moving cam 15 is movable up and down along a shaft 16, and is always pushed upward by a spring 17. 18 is a moving block, and a moving cam 15
As the reel holding part 7 moves up and down, it expands outward and contracts inward, thereby pushing the reel holding part 7 outward and contracting. Move the above lever 8 to the moving cam 1.
5. The moving block 18 and the reel holding section 7 constitute a reel holding mechanism. Next, the configuration of the tape positioning mechanism will be described. Reference numeral 19 is a shift arm rotatable about a support shaft 20, and the shift arm 19 is brought into contact with a moving shaft 22 via a link 21. Moving shaft 22
is indicated by the arrow 2 with respect to the base 6' of the reel mounting shaft 6.
It is movable in the direction shown in 3 or 24, and the spring 2
5'', the tape is constantly pushed in the direction shown by the arrow 24.A tape positioning block 25 is attached to the moving shaft 22.

Next, its operation will be explained. First, by pulling up lever 8 to the position shown in lever 8',
When the moving cam 15 is pushed down (in the direction shown by the arrow 24), the moving block 18 moves inward and the reel holding part 7 also contracts inward. In this state, the reel 2 can be mounted on the reel mounting shaft 6. At this time, the shift arm 19 is rotating around the support shaft 20 to the position shown at 19', and the moving shaft 22 is at the position 22'.
It has moved to the position shown in . Therefore, tape positioning block 25 is also at position 25'. This 2
The position 5' is the tape receiving tray 9 of the tape receiving tray 9.
It is in a more prominent position. When the reel 1 is mounted on the reel mounting shaft 6, the reel 2 is supported by the magnetic tape 1 by the tape positioning block 25.

Next, when the lever 8 is moved to the position shown by the solid line, the reel 2 is supported by the reel holding part 7 and the tape positioning block 25 is moved in the direction shown by the arrow 24 in the reverse stroke as described above. The tape positioning block 25 is located at approximately the same position as the tape receiving surface of the tape receiving tray 9.

According to the embodiments described above, tape positioning can be performed in conjunction with the operation of individually positioning the reel to the reel mounting shaft.

[Other Embodiments of the Present Invention] Next, another embodiment of the present invention is shown in FIG.
The reel mounting shaft 6 is attached to a drive shaft 13, and the drive shaft 13 is rotationally driven by a motor 27 attached to a panel base 26 or the like. Also,
The tape trays 9 and 9' rotate together with the reel mounting shaft 6, and are connected to the panel base 2 by the tape tray 9' stud 28.
6 and does not rotate, and its height is approximately the same as that of the tape receiving tray 9'.

Reference numeral 29 denotes a slide drive unit which can be realized with an air cylinder or an electromagnetic solenoid fixed to the panel base 26, and a tape positioning block 3 is attached to one end of the shaft 30 of the slide drive unit 29.
1 is provided.

Explaining the operation of the above-described structure, when a reel is mounted on the reel mounting shaft 6, the tape positioning block 31 protrudes above the tape receiving tray 9, and the reel is received by the magnetic tape 1. Next, after fixing the reel to the reel mounting shaft 6, the tape positioning block is lowered by the slide drive section 29.

In addition, as another embodiment of the present invention, the tape tray 9' itself may be moved. That is, when a reel is mounted on the reel mounting shaft 6, the entire tape receiving tray 9' may be raised to receive the magnetic tape 1 and the reel is fixed, and then the tape receiving tray 9 may be lowered.

In the above embodiment, the structure is simple, and the gap between the tape receiving tray and the magnetic tape can be ensured.

Note that there are many known reel holding mechanisms including the reel holding shaft 6, and any reel holding mechanism may be used, but will not be described in detail.

[Effects of the present invention] As described above, by implementing the present invention, even if the reel is changed, the tape is wound irregularly, or the magnetic tape is not wound at the center of the winding core, Since the magnetic tape is always kept at a substantially constant height, stable tape running can be achieved.

Moreover, if the present invention is implemented, there is an advantage that it is not necessary to adjust the height of each reel individually, even when compared with the conventional method of adjusting the height of the entire reel stand.

Furthermore, if the present invention is implemented, a gap is ensured between the tape tray and the magnetic tape, so even if the magnetic tape is wound slightly, the magnetic tape and the tape tray will not come into contact with each other. This is extremely advantageous for industry.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the reel. A is a reel with a flange, B is a reel without a flange, 1 is a magnetic tape, 2 is a winding core, and 3 is a flange. Figure 2 shows a conventional reel holding device. 6 is a reel mounting shaft, 7 is a reel holding part, 8 is a lever, and 9 is a tape tray. FIG. 3 is an explanatory diagram of an embodiment of the present invention. 19 is a shift arm, 20 is a support shaft, 21 is a link, 22 is a moving shaft, and 25 is a tape positioning block. FIG. 4 is an explanatory diagram of another embodiment of the present invention. 26 is a panel base, 29 is a slide drive unit,
30 is a shaft, and 31 is a tape positioning block.

Claims (1)

[Scope of utility model registration request] A reel holding device comprising: a reel holding mechanism that fixes a reel; and a tape positioning mechanism that can protrude from the reel attached to the reel holding mechanism and contacts a magnetic tape portion of the reel in a protruding state. .