JPH1029746A - Thin film roll driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin film roll driving device, in which reduction in installation space and in an installation cost and uniform dust elimination in the width direction can be accomplished, by using a dust eliminating-width spreading roll provided with a dust eliminating function and a width spreading function. SOLUTION: A dust eliminating-width spreading roll 34, which is constructed of a cylindrical roll core 3401 installed in a shaft 32 and brush 3402 installed on the surface of the roll core 3401, is arranged in a traveling path for a film. The dust eliminating-width spreading roll 34 is rotated in the same direction as the film traveling direction at a peripheral velocity higher than a traveling speed of the film, so that the both of a dust eliminating function and a width spreading function can be accomplished by means of a single dust eliminating- width spreading roll 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll driving device for a thin film, and more particularly, to a roll used in an apparatus for performing processing such as printing and coating while running a thin film such as a plastic film at a predetermined speed. The present invention relates to a driving device.

[0002]

2. Description of the Related Art For example, in a magnetic tape manufacturing apparatus, a roll driving device for running a plastic film is used. In this type of roll driving device, a tentering roll is provided for the purpose of preventing wrinkling of the film, and a cleaning processing unit is provided for removing dust and foreign matter on the film. FIGS. 5 and 6 show two examples of such a conventional thin film roll driving device.

In a roll driving device shown in FIG. 5, a film 2 is wound around rolls 4, 6, 8, and 10, and a winding section 1 is provided.
It can be wound into two. Between the rolls 4 and 6, there is provided a cleaning unit 14 for removing dust and foreign matter on the film 2 which causes dropout. This cleaning processing unit 14
A brush roll 18 is provided in the housing 15, and the brush roll 18 is rotated to remove dust and is discharged from an exhaust port 19.

[0006] The roll driving device shown in FIG. 6 removes dust by pressing a cleaning paper 22 wound on a roll 21 as a cleaning processing unit 14 against the film 2 while winding the cleaning paper 22 in a direction opposite to the running direction of the film 2. The other mechanism is the same as that of the apparatus shown in FIG.
5 and 6, a tentering roll r as shown in FIG. 4 is used for one or both of the rolls 4 and 6.

[0005] A tentering roll r shown in FIG.
The groove 26 is inclined at a predetermined inclination angle to the left from the center to the left and to the right from the center. Further, the tentering roll r shown in FIG.
The groove 26 is formed in an inversely symmetric spiral shape with the center as a boundary. 4 (a) and 4 (b), the film 2 is held by the tentering roll r, and the film 2 is bent by using the bending of the elastic roll 28 in the width direction due to the web tension.
Prevents creases and wrinkles. 4 (c) is obtained by covering a shaft 26 with an elastic tube 30 made of rubber or the like. The elastic tube 30 has a curvature that draws an arc in the width direction. It repeats expanding and contracting in the width direction with each rotation. By attaching the film 2 at a position where the film 2 is held by the elastic tube 30 and a position where the elastic tube 30 extends, a tentering effect can be obtained.

In FIGS. 5 and 6, when the tentering roll r is set at the position of the roll 6, an effect of improving the winding shape of the film 2 is obtained, and the tentering roll r is set at the position of the roll 4. In this case, the effect of reducing the variation in the dust removing effect in the width direction is obtained. In addition, in order to obtain both effects, the tentering roll r is provided at both positions of the rolls 4 and 6.

[0007]

In the above-described conventional roll driving apparatus for a thin film body, the tentering action by the tentering roll r and the dust removal processing by the cleaning processing unit 14 are separately performed. There is a problem that the space is inevitably increased and the equipment cost is inevitably increased. In addition, since the position of the tentering roll r and the cleaning processing unit 14 are far from each other, if dust is removed in a state where the tentering roll is not sufficiently tentatively formed, it is difficult to perform uniform dust removal due to the effect of waving and creases on the film. There was also.

The present invention has been made in view of the above points. By using a dust removing / widening roll having a dust removing and widening action, equipment space and equipment cost can be reduced, and uniformity in the width direction can be achieved. It is an object of the present invention to provide a roll driving device for a thin film body, which makes it possible to remove dust easily.

[0009]

In order to achieve the above object, the present invention provides a thin film which travels on a roll by applying a tension outward in a width direction to perform tentering. A roll driving device for a thin film body that performs a cleaning process to remove dust and foreign matter attached to a housing, a housing, a dust removing / widening roll provided in the housing, and an opening in the housing, and the thin film body is placed in the housing. Guided dust removal
An inlet for the thin film to be mounted on the tentering roll, an outlet for the thin film which is opened in the housing and guides the thin film mounted on the dust removing / widening roll out of the housing, and the thin film from the inlet to the outlet. A traveling means for traveling toward the front, and a discharge port for the dust and foreign matter opened in the housing, wherein the dust removing / widening roll has a cylindrical roll core, and a longitudinal center portion of the roll core on a surface of the roll core. A brush bristle attached so as to be inclined in the opposite direction with a predetermined inclination angle toward both ends at the boundary, and the dust removing / widening roll is moved in the same direction as the running direction of the thin film body and the thin film body. A driving means for rotating at a peripheral speed higher than the traveling speed of the vehicle.

[0010] In the present invention, the dust removing / widening roll is rotated by the driving means in the same direction as the running direction of the thin film body and faster than the running speed of the thin film, so that the brush bristles perform the dust removing action, and the dust and foreign matters are discharged. Is discharged from Also,
The brush bristles are elastically deformed in both end directions by the tension of the thin film held by the dust removing / widening roll, so that a uniform tension in the width direction is generated in the thin film and the tentering action is performed.
As described above, according to the present invention, both of the dust removal processing and the tentering function can be performed by one dust removing and tentering roll. Therefore, the equipment cost and equipment space can be reduced by simplifying the equipment of the roll drive device, and the dust removal processing and the tentering can be performed at the same position at the same time. It is not affected by folds and can be uniformly dust-removed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a side view conceptually showing an embodiment of a roll driving device for a thin film body of the present invention, and FIG. 2 is a side view showing an example of a dust removing / widening roll, which is the same as FIG. 5 and FIG. Members and components having the same function are denoted by the same reference numerals. The dust removing / widening roll 34 used in the roll driving device for the thin film body includes a cylindrical roll core 3401 made of a hard member such as plastic or metal attached to the shaft 32, and a brush attached to the surface of the roll core 3401. In this example, the roll core 3401 has a cylindrical shape.

The shafts 32 at both ends are supported by the housing 16 via bearings 36, whereby the brush roll 34 is supported inside the housing 16, and a gear or pulley 38 fixed to the shaft 32 is driven outside the housing 16. It is designed to be driven by a motor (driving means). The housing 16 has an inlet 1602 that guides the film 2 into the housing 16 and an outlet 1604 that guides the film 2 out of the housing 16.
An exhaust port 20 for discharging dust and foreign matter is formed.

The brush bristles 3402 include a roll core 3401.
Of the roll core 3401 is attached in a reversely symmetric spiral shape with respect to a plane L orthogonal to the axis of the roll core 3401, and the left side of the plane L is directed leftward and the right side is directed rightward at a predetermined inclination angle θ. It is configured to incline. The brush bristles 3402 may be natural fibers or synthetic resin fibers such as nylon and tetron.

The means for attaching the brush bristles 3402 to the roll core 3401 may be such that the bristles are planted on the surface of the roll core 3401, or the bristles are planted on a belt-shaped member and wound around the roll core 3401. In addition, the winding direction of the brush bristles 3402 is not spiral,
Each of the brush bristles 401 may be attached in a ring shape at a number of locations spaced apart in the longitudinal direction of the brush 401.
If 02 has the inclination angle θ, the action of tentering can be obtained.

As shown in FIG. 1, the dust removing / widening roll 34 configured as described above is set at a position immediately before the roll 6 (the position of the roll 4 in FIG. 5). Film 2
Is guided from the inlet 1602 into the housing 16 to remove dust.
The dust removing / widening roll 34
And rolls 6, 8, 10 from outlet 1604
And is wound around the winding unit 12 while applying a predetermined tension, and travels. Therefore, in this example, the rolls 6, 8, 10 and the winding section 12 constitute a running means of the film 2. Then, the dust removing / widening roll 34 is rotated by the drive motor in the same direction as the traveling direction of the film 2 and at a speed higher than the film traveling speed, so that the dust removing action is performed, and dust and foreign matters adhering to the film 2 are removed. It is discharged from the exhaust port 20.

At the same time, the brush bristles 3402 are elastically deformed from the center L toward both ends by the tension of the film 2, so that a uniform tension is generated in the film 2 in the width direction.
A tentering action is performed. In this case, when the tension in the running direction of the film 2 is constant,
Since it can be determined by the material of the brush bristles 3402, the thickness and length of the bristles, the density of the brush bristles, and the like, it is possible to select the most appropriate dust removing / widening roll 34 for the film 2.

Therefore, according to the thin film roll driving device of the present embodiment, the dust removing / widening roll 34 composed of a brush roll is provided in the traveling path of the thin film body, thereby reducing
The two dust removal and tentering rolls 34 can perform both the dust removal processing and the tentering function, and the facility of the roll driving device can be simplified to reduce the equipment cost and equipment space. In addition, since the dust removing process and the tentering of the thin film can be simultaneously performed at the same position, there is no influence of the surface of the thin film at the time of dust removing, and the dust can be uniformly removed.

The same effect can be obtained even if the position where the dust removing / widening roll 34 is set is the position of the roll 6 in FIG. Further, in the above-described embodiment, an example in which the thin film body is applied to the film 2 such as a magnetic tape is shown, but the present invention is not limited to this, and can be applied to any thin film body that requires tentering and dust removal. is there.

[0019]

As described above in detail, according to the present invention, the thin film body running on the roll is tensioned outward in the width direction to perform tentering, and the thin film body adheres to the thin film body. What is claimed is: 1. A roll driving device for a thin film member for performing a cleaning process for removing dust and foreign matter, comprising: a housing; a dust removing / widening roll provided in the housing; and an opening in the housing, the thin film member being guided into the housing. An inlet for the thin film to be mounted on the tentering roll, an outlet for the thin film which is opened in the housing and guides the thin film mounted on the dust removing / widening roll out of the housing, and an outlet for the thin film from the inlet And a discharging means for discharging the dust and foreign matter opened in the housing, wherein the dust removing / width-providing roll has a cylindrical roll core, and a longitudinal direction of the roll core is provided on a surface of the roll core. It is composed of brush bristles attached so as to incline in the opposite direction with a predetermined falling angle toward both ends with the center part as a boundary, and the dust removing / widening roll is moved in the same direction as the running direction of the thin film body. Further, a driving means for rotating at a peripheral speed higher than the running speed of the thin film body is provided. Therefore, both the dust removal processing and the tentering function can be performed by one dust removal and tentering roll, and the facility of the roll driving device can be simplified to reduce the equipment cost and equipment space. Since the tentering can be performed at the same position at the same time, the surface of the thin film body is not affected by undulation or wrinkles during dust removal, and dust can be uniformly removed.

[Brief description of the drawings]

FIG. 1 is a side view conceptually showing one embodiment of a roll driving device for a thin film body of the present invention.

FIG. 2 is a side view showing an example of a dust removing / widening roll used in the thin film roll driving device of the present invention.

FIG. 3 is a vertical sectional side view of the dust removing / widening roll shown in FIG. 2;

FIG. 4 shows three examples of a conventional tentering roll.
(A) is an elastic roll in which a ring-shaped groove is processed, (b)
Denotes an elastic roll having spiral grooves, and (c) denotes an elastic tube type.

FIG. 5 is a side view conceptually showing a conventional roll driving device for a thin film body.

FIG. 6 is a side view conceptually showing another conventional roll driving device for a thin film body.

[Explanation of symbols]

2 ... film (thin film), 6, 8, 10 ... roll,
16 ... housing, 1602 ... entrance, 1604 ...
Outlet, 20 ... Exhaust port, 32 ... Shaft, 34 ... Dust removing / widening roll, 3401 ... Roll core, 3402 ... Brush bristle, θ ... Tilting angle.

Claims (7)

[Claims] 1. A thin-film body which performs tensioning by applying a tension outward in a width direction to a thin-film body running on a roll, and performs a cleaning process for removing dust and foreign matter attached to the thin-film body. A housing, a dust removing / widening roll provided in the housing, and an entrance of the thin film which is opened in the housing and guides the thin film into the housing to be mounted on the dust removing / widening roll. An opening of the thin film body, which is opened in the housing and guides the thin film body mounted on the dust removing and tentering roll to the outside of the housing; running means for running the thin film body from the inlet to the outlet; and an opening in the housing. The dust and foreign matter discharge port, and the dust removing / widening roll has a cylindrical roll core, and the surface of the roll core is oriented in both ends toward the longitudinal center of the roll core. And a brush bristle attached so as to be inclined in the opposite direction with a predetermined falling angle, and the circumferential speed of the dust removing / widening roll in the same direction as the running direction of the thin film body and higher than the running speed of the thin film body. A roll driving device for a thin film member, comprising: a driving unit for rotating the roll. 2. The roll driving device for a thin film body according to claim 1, wherein the brush bristles are attached to a ring shape at a plurality of locations spaced apart in a longitudinal direction of the roll core. 3. The roll driving device for a thin film body according to claim 1, wherein the brush bristles are attached in a spiral shape in opposite directions from a longitudinal center portion of the roll core toward both ends. 4. The roll driving device for a thin film body according to claim 1, wherein the brush bristles are implanted in the roll core. 5. The roll driving device for a thin film member according to claim 1, wherein the brush bristles are planted on a belt-shaped member, and the belt-shaped member is wound around the roll core. 6. The thin film body according to claim 1, wherein the roll core is rotatably supported by the housing via a shaft and a bearing, and the shaft and a driving unit are connected outside the housing. Roll drive. 7. The roll driving device for a thin film body according to claim 1, wherein the roll core is formed in a cylindrical shape.