JPS6026028Y2 - Wide tape winding device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wide tape winding device and is characterized by the internal structure of the touch roll.

For example, the original magnetic tape to be assembled into a magnetic tape cartridge is a wide thin material with a width of about 1 rrL, has a smooth surface, and is resistant to stretching and deformation during winding.

In order to wind this type of wide tape at high speed in an orderly manner with a small tension and without causing waviness or wrinkles on the core, it is necessary to use a touch that presses the tape roll wound around the core. How the touch pressure of the roller and the structure or hardness of the roller itself are set has a decisive influence on the winding accuracy.

In this design, apart from the touch pressure of the touch roller, we paid special attention to the hardness of the roller itself.

That is, if the touch roller is too hard, the tape winding force on the winding core becomes large, which is undesirable because a strong stretching force is applied to the tape, and if the touch roller is too soft, the winding becomes sagging, wrinkles, and rolls occur.

This relationship also appears depending on the strength of the touch pressure.

Therefore, conventionally, attention has been paid only to the adjustment function of the touch pressure, and the point of how to set the structural hardness of the touch roller has tended to be overlooked.

However, a common material for the touch roller is an elastic rubber member.

However, it is difficult to mold this into a thick and long piece with a rubber hardness of 30 degrees or less, and if the main body of the touch roller is made of an elastic rubber member, it will be too hard.

Next, an elastic sponge member may be considered, but this is too soft and cannot withstand long-term use if it is brought into direct sliding contact with the tape roll.

As a result of various studies from this point of view, the inventors of this invention found that the touch roller was designed by interposing a thick elastic sponge member around the outer periphery of a circular core member, and then surrounding the outer periphery of this sponge member with an elastic rubber member with a rubber hardness of 50 degrees or less. It was confirmed that a cross-sectional structure with a stretched cross-sectional structure was ideal for winding wide tape, such as the original magnetic tape, into an orderly winding shape with a small winding stiffness, and this idea was completed. .

Hereinafter, a specific example thereof will be explained based on the drawings.

1 and 2, reference numeral 1 denotes a two-shaft turret disk having two winding shafts 2, 2 at opposing positions, which rotates intermittently by 180 degrees around a support shaft 3, and is located at the winding position on the right side of the diagram. A
The respective winding shafts 2, 2 are sent alternately.

A winding core 4 is detachably attached to each winding shaft 2, and at attachment/detachment position B on the left side of the figure, the fully wound core 4 after tape winding is removed from the winding shaft 2, and the empty winding core 4 is attached to the winding shaft 2. be done.

Between both winding shafts 2, 2 of the turret board 1, two tape guide rollers 5, 5 are rotatably arranged opposite to each other between the tips of a pair of front and rear fixed arms 6. A roller 7.7 is rotatably disposed opposite to the tips of a pair of front and rear movable arms 8,8.

The movable arms 8, 8 that support each touch roller 7 have their base ends fixed to a pivot shaft 9 that is pivoted forward and backward on the turret board 1, and the movable arms 8, 8 that support each touch roller 7 have their base ends fixed to a pivot shaft 9 that is pivoted back and forth on the turret board 1. A rotary actuator 11 is connected to the shaft end while supporting a balance weight 10 for adjusting the ratio.

With this rotary actuator 11, the turret plate 1
When the tape roll T' is stopped, the touch roller 7 located on the upper side always comes into elastic contact with the surface of the core 4, which is currently winding up the wide tape T at the winding position A, with a constant light pressure, regardless of the thickness of the tape roll T'.

Each touch roller 7 is swung between a position in which it is in elastic contact with the upper left side of the surface of the winding core 4 at the winding position and a position in which it is separated from the winding core 4.

Fixed frame 13 located on the right side of the turret board 1 in the diagram
A swinging arm 15 having a winding roller 14 at its tip and a swinging arm 17 having a cutting mechanism 16 at its tip are respectively pivotally supported.

The take-up roller 14 swings about a pivot 19 at the base end of the swing arm 15 as a fulcrum, and comes into elastic contact with the winding core 4 at the winding position A only when winding the tape.
The winding core 4 is oscillated and retracted to the fixed frame side via the winding core 4, and is rotationally driven in synchronization with the surface speed of the winding core 4.

The cutting mechanism 16 swings about a pivot 21 at the base end of the swinging arm 17 as a fulcrum, and swings to approach the winding core 4 from below when wrapping the wide tape T around the winding core 4 at the cutting position A. After the winding is completed, it swings and retreats to a lowered position away from the winding core 4.

The cutting mechanism 16 includes a cutter 23 that is driven to move forward and backward, and a nozzle 24 that is close to the cutter 23 and blows out compressed air.

In addition to the cutting mechanism 16, the swinging arm 17 is equipped with a tape guide roller 25, a tape guide bar 26, a pressing roller 28 biased by a spring 27, and a detection switch 29 at predetermined positions.

In this case, the air-wound core 4 is attached to one winding shaft 2 at the attachment/detachment position B, and the air-wound core 4 is sent to the winding position A by the rotation of the turret board 1.

Figure 1 shows a wide tape T on the winding core 4 at this winding position A.
This shows the state in the middle of being wound up.

While the wide tape T is being wound around this winding core 4 while being guided by the guide roller group 30 from the previous process, the winding roller 14
A touch roller 7 is in elastic contact with the circumferential surface of the tape roll T' wound around the core 4.

The winding roller 14 is separated from the winding core 4 by the bellow frame cylinder 20 immediately after the touch roller makes elastic contact only when cutting and winding the wide tape T.

The touch roller 7 acts so that the wide tape T is wound around the winding core 4 with uniform and soft winding stiffness throughout, and remains in elastic contact until just before the fully wound core is separated from the winding shaft 2.

When the wide tape T is fully wound around the winding core 4, this is detected and the turret plate 1 rotates 180 degrees.

Now, the fully wound core 4 is at the loading/unloading position B, and the empty winding core 4 is at the winding position A.
Replaced with

At the beginning of this switching, the tape T is guided by the lower guide roller 5 at a position immediately before contacting the empty core 4 and is connected to the fully wound core 4 at the attachment/detachment position B.

However, the winding roller 14 immediately descends while pushing down the tape T, winds the tape T onto the air-wound core 4, and the swinging arm 17 equipped with the cutting mechanism 16 rises from the retracted position and winds the tape T onto the air-wound core 4. be in close proximity.

This swinging arm 17 stops rising by the action of a switch 29.

After the state shown in FIG. 2 is reached, the cutter 23 of the cutting mechanism 16 is activated to cut the tape T across the width, and the cut end is cut onto the surface of the air-wound core 4 by compressed air from the nozzle 24. It gets sprayed and gets caught up in it.

When the tape T is completely wound around the empty winding core 4, the cutting mechanism 16 swings back to its original lowered position, and the touch roller 7 instead comes into elastic contact with the surface of the winding core 4, and the winding continues. The tape T is wound around the core 4 until it is fully wound.

During this winding, the fully wound core 4 described above is removed from the winding shaft 2 at the attachment/detachment position B, and a new empty winding core 4 is attached to this winding shaft 2.

Then repeat the above operation.

This is the basic operation of the proposed winding device.

The present invention is characterized by the internal structure of the touch roller 7 in such a winding device.

That is, each touch roller 7 has a core member 31 made of a lightweight hollow tube made of aluminum, and a flexible thick elastic sponge member 32 interposed on its outer periphery, and a rubber hardness of 50 degrees on the outer periphery of the sponge member 32. Below, preferably 30
It has a structure in which a thin elastic rubber member 33 of around 300 mm is stretched.

Incidentally, assuming that the wide tape T is wound with a winding diameter of 450 TIrIn around the winding core 4 with a diameter of 167Trgn, the diameter of the touch roller 7 itself is about 80mm, of which the sponge member 32 has a thickness of about 20rrvn, and the rubber member 33 has a thickness of about 8mm. Each was set appropriately.

Although the wind-up roller 14 and the touch roller 7 have different names for convenience of explanation, the wind-up roller 14 is also one of the touch rollers.

Therefore, in the present invention, the winding roller 14 is of the same structure as the roller 7, as shown in FIG. This is naturally to be expected.

Furthermore, in the illustrated example, both rollers 7.14 were assumed to be oscillatingly displaced as the winding diameter of the tape roll T' increased, but these rollers 7.14 were designed to be linearly displaced backwards. It's okay.

Furthermore, depending on the properties of the wide tape T, a touch roller (7 or 14) may be used to move the tape roll T' from the beginning to the end.
Instead of contacting the peripheral surface with a constant pressure, the contact pressure may be gradually decreased as the winding diameter increases.

In any case, the design of the touch roller displacement mechanism and contact force adjustment mechanism can be changed as desired.

As explained above, according to the winding device according to this invention, the touch roller (7 or 14) used has a flexible sponge member 32 in the middle, and the outer periphery is covered with elastic rubber having a rubber hardness of 50 degrees or less. It has a cross-sectional structure in which the member 33 is stretched.

Therefore, the touch roller can be configured to be flexible and elastic in just the right amount, and it comes into elastic contact with the outer peripheral surface of the tape roll T' with light liquid pressure. This means that it can be wound evenly under a small tension in an orderly manner without wrinkles or sagging, and the thin wide tape T, which has a smooth surface and resists stretching and deformation, can be wound with a small winding stiffness. In doing so, it is a great contribution to the world of science.

[Brief explanation of drawings]

1 and 2 are schematic front views illustrating the overall operation of the winding device according to the present invention, and FIG. 3 is a main part showing the support structure of the touch roller, which is one of the constituent members of the present invention. A cutaway longitudinal side view, and Figure 4 is a cross-sectional view of the touch roller.
FIG. 5 is a sectional view of another touch roller. 1... Turret board, 2... Winding shaft, 4
... Winding core, 711111111116 touch roller, 11 ... Rotary actuator, 14 ...
...Touch roller (take-up roller), 16...
- Cutting mechanism, 31...Circular core member, 32...
...Elastic sponge member, 33...Elastic rubber member, A... Winding position, B... Attachment/detaching position, T... Wide tape T/ ...Tape roll.

Claims (1)

[Scope of utility model registration request] In a device for winding a wide tape T around a winding core 4 attached to a winding shaft 2, a touch that elastically contacts the tape roll T' wound on the surface of the winding core 4 changes according to changes in the winding diameter. The roller (7 or 14) has a structure in which a thick elastic sponge member 32 is interposed on the outer periphery of a circular core member 31, and a thin elastic rubber member 33 with a rubber hardness of 50 degrees or less is stretched around the outer periphery of the sponge member 32. A wide tape winding device characterized by: