JPS5853424B2 - tape guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention prevents the leading edge of the tape from being inadvertently stopped by grooves or protrusions inside the tape guide when the tape fed out from the tape supply side runs through the tape guide during automatic tape loading. The present invention relates to a tape guide device that can prevent such occurrences.

Conventional devices of this type do not have any measures to prevent the tape from inadvertently stopping due to grooves or protrusions in the tape guide, and there is no way to detect when the tape stops due to such obstacles. Therefore, the tape is automatically fed by a preset amount from the tape supply side.

As a result, the tape is bent within the tape guide or within the cylinder of the tape delivery section, resulting in creases and scratches on the tape, causing a serious problem in which the data recorded on the tape is destroyed.

The present invention has been made in view of the above-mentioned drawbacks, and its object is to provide a tape that does not bend during tape feeding, and therefore has no risk of destroying data recorded on the tape. The goal is to realize a guiding device.

An object of the present invention is to provide a tape winding system that has a tape guide having a blowing hole that blows out air diagonally along the tape running direction, and that transports the tape fed out from the tape supply side along the tape guide to wind the tape. In an apparatus for automatically loading the tape on the pick-up side, means for supplying air between the tape and the tape guide surface from at least one end in the tape width direction or from the back side of the tape is disposed on the tape guide, and the means causes the This can be achieved by providing a tape guide device that is characterized by changing the traveling direction of the leading edge of the tape that is transported along the tape guide surface.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows an embodiment of a tape guide device to which the present invention is applied.

The right side of the figure is the tape feeding section, and the left side is the tape winding section.

In the tape feeding section, there is a tape roll Ta (the outer periphery of which is indicated by a two-dot iron line), and the tape roll Ta is driven by a morph (not shown).

A tube 11 is provided around the tape roll Ta, and this tube 1
1 is provided with a plurality of air blowing holes.

The leading end of the tape T is sent outward from the tube 11 by the air flow shown in the figure blown out from the blow-off hole.

The tape sent out from the tube 11 is transferred toward the left in the figure along the tape guide surface 2a of the tape guide body 1.

The tape T can run by the air from the tube 11 up to the vicinity of the air bearing 13, but after that point the force of the air from the tube 11 is weak.

Therefore, as shown in the figure, air is blown obliquely along the tape running direction from holes 2b formed in the tape guide surface 2a to cause the tape T to run further leftward.

The movement of the tape T near the rotor 4 and guide 3 will be described later.

Now, the tape winding section is provided with a cylinder 12 for winding up the tape T, and is rotated clockwise by a morph (not shown).

Further, a plurality of suction holes are provided on the outer periphery of the cylinder 12 to suck air.

Therefore, the leading end of the tape T that has traveled along the tape guide surface 2a is attracted to the cylinder 12 by the suction air from the air suction hole, and is wound around the cylinder 12.

Note that P in the figure indicates a pressurized air supply port. The automatic tape loading operation is completed in the above manner.

Next, a sensor system for checking the running state of the tape T will be explained.

If the light from the light-emitting element 15 reaches the light-receiving element 16 even after a certain period of time has passed since the tape roll Ta on the tape feeding side rotates clockwise, the tape does not come out from the tape feeding side 1. Then, the tape roll is rotated counterclockwise to rewind the tape T.

Incidentally, the air blown out from the tube 11 at this time also serves to prevent the tape roll from becoming loose when the tape is rewound.

Also, if the tape tip reaches the light emitting element 1 within a predetermined time,
5 and the light receiving element 16, it is checked whether or not the tape has been wound around the cylinder 12 on the tape winding side within a certain time from that point.

This check is performed on the cylinder 12 and the light receiving/emitting element 17°18.
It is carried out by

In other words, when there is a reflective object around the entire circumference of a part of the cylinder 12 and the tape is not wrapped around the cylinder 12, the light emitted from the light emitting element 1T reaches the light receiving element 18, but the tape wraps around the cylinder 12 almost once. When the tape is wrapped, the light from the light emitting element 17 is absorbed by the tape and does not reach the light receiving element 18, and as a result, it is detected that the tape is wrapped.

The above is the automatic tape loading operation, but in conventional devices, the following problems occur during automatic tape loading.

That is, the tape T fed out from the tape supply side runs along the tape guide surface by the air blown obliquely from the tape guide surface 1a of the tape guide body 1.

A rotor 4 having a head 5 attached thereto and a guide 3 for causing the tape T to follow the outer periphery of the rotor 4 during data processing are disposed between the tape guide 1 and the tape guide 2.

This guide 3 is separated from the rotor 4 as shown in the figure when the tape T is automatically loaded from the tape supply side to the tape winding side.

This is because it becomes an obstacle to tape running during automatic tape loading.

In this way, the guide 3 needs to move during automatic tape loading and data processing.

Therefore, a gap is inevitably created between the guide 3 and the tape guides 1 and 2 as shown in the figure.

Conventionally, the leading edge of the tape would get stuck in this gap during automatic loading, causing autoloading to fail, and the tape that was subsequently fed out would bend at the tape guide or tape delivery section, destroying data.

In order to prevent this, the present invention provides an air blowing hole 11 at the end of the tape guiding body 1 just before the guide 3, and blows air from this hole almost perpendicular to the tape running direction (perpendicular to the paper surface). At that position, the leading end of the tape is moved away from the gap formed between the guide 3 and the tape guides 1 and 2 to run.

FIG. 2 shows an enlarged view of the rotor and guide portion of FIG. 1. FIG.

Further, FIG. 3 shows a sectional view taken along the line AA in FIG. 2.

All numbers in both figures are the same as those in Figure 1.

In both figures, symbol T1 indicates the trajectory of the tape T when the air injection hole 11 of the present invention is provided, and T2 indicates the trajectory of the tape T when autoloading fails in a conventional device not provided with the air injection hole 11. T3 indicates the running position of the tape T during autoloading, and T4 indicates the running position of the tape T during data processing.

Further, in FIG. 3, covers having air ejection holes 11 are provided on both sides of the tape guide body 1.

The operation is performed as follows.

First, when the tape T is automatically loaded, the guide 3 is retracted to a position isolated from the periphery of the rotor 4, as shown by solid lines in both figures.

Therefore, the tape T is transported along the tape guide surface 2a of the tape guide 1 by the air flow from the hole 2b, as indicated by T in FIG.

Then, the leading edge of the tape moves in a direction away from the tape guide surface 2a due to the air flow ejected from the air ejection hole 11 formed in the tape guide body 1 just before the guide 3, so that the tape T is indicated by T1 in FIG. Follow a similar trajectory.

As a result, the leading end of the tape does not enter the gap between the tape guide and the guide and follow the conventional trajectory indicated by T2 in the figure.

The air ejection holes 11 communicate with a pressurized air chamber 19 into which pressurized air ejected from holes 2b formed in the tape guide surface 2a is fed.

Therefore, from this pressurized air chamber 19 to the notch 11 of the cover 10.
The pressurized air is blown out between the tape guide surface 2a and the tape T.

Therefore, the tape being transferred while being attracted to the tape guide surface 2a is displaced in a direction away from the tape guide surface 2a at this portion.

Therefore, the tape no longer follows the trajectory shown at T2 in FIG. 2 at this position.

After the autoload is completed, the motor 7 is driven, and the guide 3 rotates around the shaft 20 and moves toward the circumferential surface of the rotor 4.

The position of the guide 3' at this time is shown by a chain double-dashed line in the figure.

Of course, at this time, the tape T also moves toward the circumferential surface of the rotor 4 at the same time as the guide 3, and moves to the position T4.

As explained above, according to the present invention, during automatic tape loading, the tape is prevented from jumping out from the gap between the tape guides, etc., so it is possible to eliminate problems such as tape bending. .

In the above embodiment, the pressurized air is supplied from both ends of the tape in the width direction of the tape, but the present invention is not limited to this, and the pressurized air may be supplied from one end. Almost the same effect can be obtained.

Furthermore, the same effect can be expected by jetting pressurized air from the back surface of the tape in a vertical direction or in a direction opposite to the tape transport direction, instead of at the tape end in the tape width direction.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the tape guide device according to the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a sectional view taken along the line AA in FIG. 2. In the figure, 1 and 2 are tape guide bodies, 2a is a tape guide surface, 3 is a guide, 4 is a rotor, 5 is a head, 10 is a cover, and 11 is an air jet hole.

Claims (1)

[Claims] 1. It has a tape guide body with a blowout hole (1) that blows out air diagonally along the tape running direction, and the tape fed from the tape supply side is automatically transferred along the tape guide body to the tape winding side. In the loading device, a pressurized air chamber is provided, and air blowing holes from the pressurized air chamber are provided diagonally along the tape running direction on the tape guide surface, and the tape is run along the tape guide surface to prevent it from flying. A tape guiding device characterized in that a notch is provided at least on one end side in the tape width direction in the vicinity of the starting end, and air is blown out from the pressurized air chamber.