JPH0721475Y2 - Tape reel - Google Patents

Description

[Detailed Description of the Invention] [Outline] Regarding the improvement of a tape reel used in a magnetic tape device or the like, with the object of providing a tape reel that prevents loosening when winding a tape at a high speed, a large number of small tapes are provided on a flange. The holes are arranged from the winding frame side toward the flange peripheral edge direction, and each small hole penetrating from the flange inner surface to the flange outer surface has a sectional shape inclined toward the flange peripheral edge. Constitute.

[Industrial application field]

The present invention relates to an improvement of a tape reel used in a magnetic tape device or the like, and more particularly to a new tape reel structure which prevents loosening of the tape due to air entrainment.

[Conventional technology]

Usually, many tape reels used in an open reel type magnetic tape device are provided with flanges on both sides of a winding frame for preventing winding collapse.

As the shape of the flange, there are a disk shape and a shape in which a plurality of large fan-shaped openings that spread toward the peripheral portion are formed along the circumferential direction of the reel.

[Problems to be solved by the invention]

However, as described above, the tape reel provided with the disk-shaped flange has a small amount of air adhering to the surface of the magnetic tape when the magnetic tape is wound at high speed. Stayed in
An air layer is formed between the magnetic tape layers. for that reason,
There is a problem that the tape shakes to the left and right with respect to the winding direction, the end surface of the winding layer becomes uneven, the edge is damaged, and the air that stays loosens the winding and bends, leading to data destruction. It was Also, when a magnetic tape is wound at high speed using a tape reel with a large fan-shaped opening as described above, air is not entrained between the magnetic tapes, but the large reels cause the tape reel to vibrate and the magnetic tape When winding up, it was causing edge damage.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a tape reel that prevents loosening of the tape when the tape is wound at high speed.

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, a large number of small holes are arranged in the flange from the winding frame side toward the flange peripheral edge direction, and each small hole penetrates from the flange inner surface to the flange outer surface. The respective cross-sectional shapes are formed so as to be inclined toward the peripheral edge of the flange.

[Action]

By providing a large number of small holes as described above, a force acts so that air flows from the inside to the outside due to high speed rotation,
A pressure difference between the pressure inside the tape reel and the pressure outside the tape reel is generated, and the air attached to the tape surface is sucked out of the tape reel.

Therefore, it is possible to wind in an ideal state without air remaining between the tape layers during high-speed winding.

[Embodiment] FIG. 1 is a plan view of a tape reel for a magnetic tape according to an embodiment of the present invention as viewed from the flange side, and FIG. 2 is a cross-sectional view of an essential part thereof.

As shown in the figure, the tape reel includes a reel 1 and a flange 2.
The flange 2 is provided with a large number of small holes 3.

The arrangement of the small holes is arranged in a spiral shape in the circumferential direction in order to prevent the rigidity of the entire flange from being extremely lowered. Further, in particular, as is apparent from FIG. 2, the small holes are formed in the reel peripheral edge portion 2c from the reel inner side surface 2a to the outer side surface 2b.
It has a sectional shape inclined to the side.

As a result, when the magnetic tape 4 is wound on this reel, the air in the gap 5 between the tape 4'which has already been wound up is sucked out through the small hole 3 as indicated by the arrow 6, and the tape layer Winding is completed without air entering.

The tape reel applied to the magnetic tape has been described above, but this is also applicable to a paper tape for information processing.

[Effect of device]

As explained above, the present invention eliminates the loosening and uneven tightening that have conventionally occurred during high-speed winding, eliminates physical stress due to external force, and reduces erroneous information due to media. This makes it possible to increase the rotation speed of the reel, which greatly contributes to the improvement of information processing capability.

[Brief description of drawings]

FIG. 1 is a plan view showing an arrangement example of small holes in an embodiment. FIG. 2 is a sectional view of a small hole portion of a tape reel according to the present invention. In the figure, 1 is a reel, 2 is a flange, 2a is an inner surface of the flange, 2b is an outer surface of the flange, 2c is a peripheral portion of the flange, 3 is a small hole, 4 is a magnetic tape, 5 is a gap, and 6 is a flow of air. Show.

Claims (1)

[Scope of utility model registration request] 1. A tape reel having a winding frame and a flange, wherein a large number of small holes are arranged in the flange from the winding frame side toward the flange peripheral edge direction, the flange inner surface to the flange outer surface. The tape reel characterized in that each of the small holes penetrating to each has a sectional shape inclined toward the peripheral edge of the flange.