JPH08195063A - Magnetic tape taking up device - Google Patents

Abstract

PURPOSE: To discharge air via circumferential grooves at the time of traveling at a high speed so as to prevent the formation of an air film between a magnetic tape and a guide roller by forming these grooves on this roller. CONSTITUTION: Both side faces of the guide roller 5 near a tape cassette are provided with flanges 5a for regulating the tape and the spacing between these flanges 5a is set larger than the width of the magnetic tape. The roller 5 is provided with four pieces of the grooves 10 and the length 1 between both ends thereof is set larger than half the tape width. As a result, the air is discharged through the grooves 10 and the air film is no more formed between the roller 5 and the tape even if the tape travels at a high speed. Then, the stable traveling of the tape is made possible and the regulated winding of the tape on the reel of the tape cassette is assured. The number of the grooves 10 suffice with >=3 pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic tape winding device for winding a magnetic tape from a so-called pancake, which is wound around a supply reel, on a reel of a tape cassette of a predetermined length.

[0002]

2. Description of the Related Art Generally, a magnetic tape winding device for winding a magnetic tape from a so-called pancake wound around a supply reel on a reel of a tape cassette having a predetermined length is shown in FIG. Proposed.

That is, in FIG. 2, reference numeral 1 denotes a pancake in which a magnetic tape 2 is wound around a supply reel 1a, and the length of the magnetic tape 2 passing from the pancake 1 is measured. Around the measuring roller 3, a dancer 4 for adjusting the tension of the magnetic tape 2 is circulated, and wound around the reel of the tape cassette 6 via the guide roller 5.

Although not shown in FIG. 2, the magnetic tape 2 is cut along the running path of the magnetic tape 2 between the measuring roller 3 and the dancer 4, and the cut portion of the magnetic tape 2 is cut into a tape cassette. A splicing device for adhering to a leader tape provided on the reel of No. 6 is provided.

The guide roller 5 provided near the tape cassette 6 is provided with tape regulating flanges 5a on both sides of the guide roller 5 as shown in FIG.

In the example of FIG. 2, first, the pancake 1
The magnetic tape 2 is pulled out from the magnetic tape 2 by a splicing device and the end of the leader tape provided on one reel of the tape cassette 6 is bonded with an adhesive tape, and then the magnetic tape 2 is relatively fast. Is wound on one reel of the tape cassette 6. In this case, when the measuring roller 3 measures that the magnetic tape 2 has passed a predetermined length, the magnetic tape 2 is stopped, and then the magnetic tape 2 is cut by a splicing device. Adhere the tip to the tip of the leader tape of the other reel of the tape cassette 6 with an adhesive tape,
After that, the tape is wound around the tape cassette 6 and the winding of the magnetic tape 2 in the one tape cassette 6 is completed. The above is repeated in sequence to mass-produce the tape cassette 6 in which the magnetic tape 2 is wound.

[0007]

In such a magnetic tape winding device, the flanges 5a on both sides of the guide roller 5 provided in the vicinity of the tape cassette 6 in FIG. When the distance between the magnetic tapes 5a and 5a is the same as the width of the magnetic tape 2, there is a disadvantage that both edges of the magnetic tape 2 are damaged. Therefore, conventionally, the width between both flanges 5a of the guide roller 5 is made slightly larger than the width of the magnetic tape 2.

However, when the width between the two flanges 5a and 5a of the guide roller 5 is made larger than the width of the magnetic tape 2, the traveling speed is relatively high when the magnetic tape 2 is rolled up. There is an inconvenience in that air is entrained between the magnetic tape 5 and the magnetic tape 2 to form an air film, the traveling of the magnetic tape 2 is not stable, and a reel is wound on the reel of the tape cassette 6.

In view of the above point, is the present invention intended to achieve a uniform winding on the reel of the tape cassette 6?

[0010]

A magnetic tape winding device according to the present invention is, for example, as shown in FIGS. 1 and 2, a supply reel 1a.
In a magnetic tape winding device that winds the magnetic tape 2 wound around the reel onto a reel of a tape cassette 6, flanges 5a, 5a for tape regulation are provided on both sides of the guide roller 5 near the tape cassette 6. At the same time, three or more circumferential grooves 10 are formed.

[0011]

According to the present invention, since three or more circumferential grooves 10 are formed in the guide roller 5 near the tape cassette 6, even when the magnetic tape 2 travels at a relatively high speed, the air is generated in these grooves 10. Since it is discharged through the magnetic tape 2, the magnetic tape 2 can be stably run without generating an air film between the guide roller 5 and the magnetic tape 2. It is possible to achieve uniform winding.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. 1 and 2 as an embodiment of a magnetic tape winding device. Also in this example, the magnetic tape 2 is attached to the supply reel 1a as shown in FIG.
A magnetic tape 2 wound from a pancake 1 wound around a measuring roller 3 for measuring the length of passage of the magnetic tape 2 and a dancer 4 for adjusting the tension of the magnetic tape 2.
And is wound around the reel of the tape cassette 6 via the guide roller 5.

In this case, although not shown in FIG. 2, the magnetic tape 2 is cut along the running path of the magnetic tape 2 between the measuring roller 3 and the dancer 4, and the cut portion of the magnetic tape 2 is cut. There is provided a splicing device for adhering and joining the leader tape already provided on the reel of the tape cassette 6 with an adhesive tape.

In this embodiment, the guide roller 5 provided in the vicinity of the tape cassette 6 is provided with tape regulating flanges 5a and 5a on both sides of the guide roller 5 as shown in the sectional view of FIG. In this case, the width between the flanges 5a and 5a is made slightly larger than the width of the magnetic tape 2.

Further, in this embodiment, as shown in FIG. 1, the guide roller 5 is provided with four circumferential grooves 10. The width and depth of this groove 10 are 0.5 mm, respectively, and
The length l between both ends of the book groove 10 is 1 / the width of the magnetic tape 2.
Make it larger than 2. Others are configured similarly to the conventional one.

In this embodiment, when the magnetic tape 2 from the pancake 1 is wound on the tape cassette 6, the magnetic tape 2 is first pulled out from the pancake 1 and the tape and the cut end portion of the magnetic tape 2 by a splicing device. The leading end of the leader tape provided on one reel of the cassette 6 is adhesively joined with an adhesive tape, and then the magnetic tape 2 is wound around one reel of the tape cassette 6 at a relatively high speed.

In this case, the magnetic tape 2 is moved by the measuring roller 3.
Magnetic tape 2 when it is measured that the
The magnetic tape 2 is cut by a splicing device, and the cut tip of the tape cassette 6 is adhesively joined to the tip of a leader tape provided on the other reel of the tape cassette 6 with an adhesive tape. Then, this is wound into the tape cassette 6 thereafter, and the winding of the magnetic tape 2 in the one tape cassette 6 is completed. The above is repeated in sequence to mass-produce the tape cassette 6 in which the magnetic tape 2 is wound.

In this example, since four circumferential grooves 10 are formed in the guide roller 5 near the tape cassette 6 as described above, even if the magnetic tape 2 travels at a relatively high speed, the air will remain in the grooves 10. Since it is discharged through the guide roller 5, an air film is not generated between the guide roller 5 and the magnetic tape 2,
There is an advantage that the magnetic tape 2 can be stably run and that the magnetic tape 2 can be wound around the reel of the tape cassette 6 in a uniform manner.

In the above embodiment, the guide roller 5 is provided with four circumferential grooves, but any number of grooves may be used as long as it is three or more. It can be easily understood that the effects can be obtained.

Further, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[0021]

According to the present invention, since three or more circumferential grooves 10 are formed in the guide roller 5 near the tape cassette 6, even if the magnetic tape 2 travels at a relatively high speed, the air is Since it is discharged through the groove 10, the guide roller 5
An advantage that the magnetic tape 2 can be stably run without generating an air film between the magnetic tape 2 and the magnetic tape 2, and that the magnetic tape 2 can be wound around the reel of the tape cassette 6 There is.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a guide roller used in an embodiment of a magnetic tape winding device of the present invention.

FIG. 2 is a configuration diagram showing an example of a magnetic tape winding device.

FIG. 3 is a sectional view showing an example of a conventional guide roller.

[Explanation of symbols]

 1 Pancake 1a Supply reel 2 Magnetic tape 3 Measuring roller 4 Dancer 5 Guide roller 5a Flange 6 Tape cassette 10 Groove

Claims (1)

[Claims] 1. A magnetic tape winding device in which a magnetic tape wound around a supply reel is wound around a reel of a tape cassette, and tape regulating flanges are provided on both sides of a guide roller near the tape cassette. A magnetic tape winding device characterized in that three or more circumferential grooves are formed together.