JPH09301583A - Wrinkle eliminator for strip material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart tension of pulling a web film in the width direction so a to eliminate the wrinkles of strip material by providing a pair of rollers idling in contact with both width direction ends of the conveyed strip material in such open angle shape from the top view that the lower reaches side in a travel direction is opened. SOLUTION: A web film 1 for a magnetic tape, strip material, is delivered from a delivery bobbin and delivered through a guide roller 2 and a feed roller 3, and while traveling in the direction of an arrow mark, a magnetic film is formed on its surface by application or vacuum deposition. The raw cloth film 1 is then wound onto a take-up bobbin. A pair of rollers 4 idling in contact with both width direction ends of the conveyed web film 1 are provided between two feed rollers 3 in such open angle shape from the top view that the lower reaches side in a travel direction are opened. The conveyed web film 1 is pulled in the width direction immediately before leaving a pair of rollers, and wrinkles are smoothed out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrinkle removing device for a band-shaped material, and more particularly, to a wrinkle generated when a band-shaped material, such as a magnetic tape or other raw film, a band-shaped cloth, etc., which is conveyed and subjected to various treatments, is run. It relates to a device for removing.

[0002]

2. Description of the Related Art A magnetic tape, which is a tape-shaped recording medium, is
Higher density and longer time are always required. Therefore, the original film (magnetic tape) is required to be thin,
Wrinkles are likely to occur in the conventional magnetic tape manufacturing process in which the magnetic tape is processed while being transported. In particular, in the case where the magnetic tape is a coating type tape, in the drying treatment step after applying the magnetic coating material to the raw film, and in the case where the magnetic tape is a vapor deposition type tape, in the vacuum vapor deposition treatment step, a rapid Wrinkles easily occur due to temperature changes and environmental changes.
The occurrence of wrinkles is due to insufficient tension in the width direction of the original film. As a measure to eliminate this lack of tension and eliminate wrinkles, conventionally, a roll with a groove made of rubber called a tenter roll is provided during the running of the raw film, and the elasticity of the rubber pulls the raw film in the width direction. It is known that an arc-shaped rubber roll, which is commonly called a banana roll, is provided in the course of running the original film and the original film is pulled in the width direction.

[0003]

However, in the conventional roll using the grooved roll described above, it is difficult to change the material and dimensions of the roll once manufactured, so that it is difficult to adjust the tension for pulling the raw film in the width direction. There was a defect that there was a groove mark of the roll on the original film. Further, the one using the conventional arc-shaped rubber roll,
The tension that pulls the original film in the width direction can be adjusted to some extent by rotating the arc, but the holding angle of the roll (when the original film enters the roll and when the original film exits is the same as when using the conventional grooved roll described above). However, there is a drawback in that there is a restriction on the attachment of the roll, for example, when it is not desired to bring rubber into contact with the film forming surface in the widthwise center of the original film.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is possible to adjust the tension for pulling the original film in the width direction and remove the wrinkles of the band-shaped material which does not restrict the wrapping angle of the roll or the mounting thereof. The purpose is to provide a device.

[0005]

In order to achieve the above object, according to the present invention, a pair of rollers, which come into contact with both ends of the belt-shaped member and are idled, are provided at both ends in the width direction of the belt-shaped member to be conveyed. Provided is a wrinkle removing device for a band-shaped material, which is provided in a plane C-shape that spreads out.

According to the above construction, the belt-shaped material to be conveyed is
The pair of rollers at both ends in the width direction pulls the shape in a V shape in the width direction, thereby extending wrinkles due to running.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a preferred embodiment,
It is characterized in that the horizontal axis serving as the rotation axis of the pair of rollers is angled toward the downstream side in the traveling direction with respect to the width direction of the strip-shaped material to form the V-shape.

Further, in a preferred embodiment, the vertical axis for supporting the horizontal axis of the roller is arranged at an angle toward the downstream side in the running direction with respect to the direction perpendicular to the running direction of the band-shaped material. It is characterized by having done.

[0009]

1 is a schematic explanatory view of a magnetic tape manufacturing apparatus including a wrinkle removing apparatus according to the present invention. The raw material film for magnetic tape 1 which is a belt-shaped material is fed from a feeding bobbin (not shown) and fed out through a guide roller 2 and a feed roller 3 and is run in the direction of the arrow while a magnetic film is applied or vacuum-deposited on its surface. After being formed, it is wound on the winding bobbin 4 (FIG. 1 (A)). Two feed rollers 3
In between, a pair of rollers 4 that come into contact with both ends of the conveyed original film 1 in the width direction and oscillate are provided in a planar C shape such that the downstream side in the traveling direction widens (FIG. 1B). ).

2A and 2B are explanatory views showing the mounting structure of the pair of rollers 4 in FIG. 1, where FIG. 2A is a plan view thereof, FIG. 2B is a front view thereof, and FIG. Shown respectively. A frame 5 is provided on the upper side of the original film 1 to be conveyed, the frame 5 being long in the direction perpendicular to the running direction, that is, the width direction. The frame 5 has a U-shaped cross section, and is attached and fixed to a not-shown carrier body or the like. The frame 5 has a bracket 7 in the center. A rod 8 is provided through the bracket 7 so that the length direction thereof is parallel to the width direction of the original film 1. The rod 8 is provided on both sides of the bracket in the width direction.
There is provided a coil spring 10 which is fitted into the bracket 7, one end of which is brought into contact with the bracket 7, and the other end of which is positionally regulated by a nut 9 which is screwed to the rod 8.

On the other hand, the pair of rollers 4 abut on both ends of the running original fabric film 1 and idle. This pair of rollers 4
Each of them has a horizontal axis 41 that is a rotation axis and a vertical axis 42 that supports this axis 41. One end of the vertical axis 42 is fixed to a bearing 41a of the horizontal shaft 41, and the other end is pivotally attached to the frame 5 via a suspension spring 6 (FIG. 2C). This spring 6 allows the roller 4 to follow changes in the tension of the original film 1, and the original film 1 can be kept under a constant pressure.
Pressed to. The vertical axis 42 is provided on the frame 5 inclining to the downstream side in the vertical direction with respect to the running direction of the original film 1. In other words, the vertical axis 42 is rotatably attached to the frame 5 at the caster angle α. As a result, the straightness of the roller 4 can be improved, and the pressing force of the roller 4 can be effectively applied to the original film 1.

One end of the rod 8 and the roller 4 are fixed to the longitudinal axis 42 of the roller 4, and the other end is connected by an arm 11 pivotally attached to the end of the rod 8. As a result, the pair of rollers 4 are provided at both ends of the original film 1 in a V shape such that the downstream side in the traveling direction widens. In other words, the pair of rollers 4 are arranged symmetrically with the slip angle θ at both ends which are not used as a product of the original film 1. The neutral position of the rod 8 is determined by adjusting the nut 9 screwed to the rod 8, and the central restoring force of the coil spring 10 is adjusted. By providing the coil springs 10 on both sides of the bracket 7, when a lateral force acts on one roller 4 and the rod 8 deviates from the center position, the action of the spring 10 causes the rod 8 to return to the center. .

According to the above construction, the original film 1 to be conveyed is stretched in the width direction just before leaving the pair of rollers 4 and the wrinkles are stretched. Further, if the original film 1 is pressed downward by the pair of rollers 4 as shown in FIG. 1 (A), the wrinkles can be extended more effectively. FIG.
It is explanatory drawing at the time of pressing the raw film 1 with a pair of rollers 4 downward. According to this, due to the synergistic effect of the effect of pulling the original film 1 in a V shape by the pair of rollers 4 and the effect of pulling the original film 1 in the lower direction by the pair of rollers 4, it is further sufficiently drawn to the middle, Can effectively wrinkle.

As shown by the phantom lines in FIG. 2 (C), when the drum 12 required for the processing steps for coating, marking, etc. is located under the original film 1, a pair of drums 12 are provided. The original film 1 can be pressed downward so as to press the roller 4, and a stable tensile force can be obtained.
Further, when a transport path is provided on the lower side of the original film 1, if the original film 1 is pressed downward so as to press the pair of rollers 4 against it, similar to the case of the drum 12, A stable tensile force can be obtained. It should be noted that what presses the pair of rollers 4 is not limited to the drum 12 or the transport path, and may be anything as long as the receiving surface is flat and hard.

In the above embodiment, the pair of rollers 4 are provided only at both ends of the original film 1, but the rollers may be provided at the central portion.

FIG. 4 is a plan view showing the essential parts of another example of the wrinkle removing device having a structure in which a plurality of rollers having different slip angles θ are provided in the central portion of the original film 1. in this way,
Depending on the type of the original film 1 and the usage environment, a large number of rollers may be arranged while changing the slip angle symmetrically.

[0017]

As described above, according to the present invention, a pair of rollers, which abut on both ends of the strip-shaped member that is not used as a product in the width direction and which abut on the both ends and idle, are expanded. Because it is provided in a plane C shape that opens,
Wrinkles can be extended without touching the part used as a product, and a high quality product can be obtained. Also, since the wrinkle removing device has a simple structure in which the standard roller is attached to the frame, the design can be easily changed, and like the conventional wrinkle removing device using the grooved roll, the material and the size are changed once manufactured. Since it is difficult to adjust the tension for pulling the original fabric film in the width direction, there is no drawback that the original fabric film has a groove on the roll. Further, like the wrinkle removing device using the conventional arc-shaped rubber roll, the holding angle of the roll is limited,
There are no drawbacks such as restrictions on the installation of rolls.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of a magnetic tape manufacturing apparatus including a wrinkle removing apparatus according to the present invention.

FIG. 2 is an explanatory view showing a mounting structure of a pair of rollers in FIG.

FIG. 3 is an explanatory view when the original film is pressed downward by the pair of rollers in FIG.

FIG. 4 is a plan view showing a main part of another example of the wrinkle removing device having a configuration in which a plurality of rollers having different slip angles θ are also provided in the central portion of the original film.

[Explanation of symbols]

1: original film, 2: guide roller, 3: feed roller,
4: roller, 5: frame, 6: suspension spring,
7: Bracket, 8: Rod, 9: Nut, 10: Coil spring, 11: Arm, 12: Drum, 41: Horizontal axis, 41a: Bearing, 42: Vertical axis

Claims (3)

[Claims] 1. A pair of rollers abutting on both ends of the conveyed belt-like material in the width direction and abutting on the both ends and provided in a planar C-shape so as to widen on the downstream side in the traveling direction. A wrinkle removing device for strips. 2. The C-shape is formed by making an angle between a horizontal axis, which is a rotation axis of the pair of rollers, with respect to a width direction of the strip-shaped member toward a downstream side in a traveling direction. The wrinkle removing device for a strip-shaped material according to claim 1. 3. A vertical axis for supporting a horizontal axis of the roller is arranged at an angle toward a downstream side in a traveling direction with respect to a direction perpendicular to the traveling direction of the belt-shaped material. Item 3. A wrinkle removing device for a strip-shaped material according to item 2.