JP4606648B2 - Film end processing mechanism and film supply apparatus provided with this film end processing mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, as the roll-shaped film supported by the film support portion is fed out, the film end cutting portion that cuts the end portion in the width direction of the film, and the film is fed out, The present invention relates to a film end processing mechanism in which at least one of a marking portion for providing a mark along the longitudinal direction of the film is provided at the end, and a film supply apparatus including the film end processing mechanism.
[0002]
[Prior art]
This kind of film supply apparatus comprises a part of optical functional film manufacturing equipment which bonds a polarizing film and retardation film, for example.
[0003]
When explaining the production of the optical functional film by this optical functional film production equipment,
1) A roll-shaped polarizing film whose optical axis is parallel to the film longitudinal direction is supported on the film support portion of the film supply apparatus.
[0004]
The polarizing film is wound in the form of a roll in a state in which strip-shaped aluminum thin plate materials are stacked on both ends in the width direction. This makes it possible to prevent foreign substances such as dust from entering between the respective winding portions of the polarizing film, and even if dust or the like is caught between the respective winding portions, the pushing shape by the dust is attached to the polarizing film. This is so that it can be avoided.
[0005]
2) The roll-shaped polarizing film is fed out by the film feeding mechanism of the film feeding device.
[0006]
3) As the film is unwound, both end portions in the width direction of the polarizing film are cut with a cutter provided at the film end cutting portion of the film end processing mechanism.
[0007]
Or the mark which follows the film longitudinal direction with the marker of a marking part is provided to the edge part of the width direction of a polarizing film so that the both ends of the width direction of a polarizing film can be discarded later.
[0008]
4) Cut out a parallelogram-shaped polarizing film cutout with a film cutting device arranged on the lower side of the film supply device in the film feeding direction.
[0009]
5) The parallelogram-shaped polarizing film cutout body and the retardation film whose optical axis is parallel to the film longitudinal direction in the film laminating apparatus disposed on the lower side of the film cutting apparatus, The two sides on the cut side and the both side edges of the retardation film are bonded together in a state along each.
[0010]
Conventionally, the film edge processing mechanism of the above-described film supply apparatus is configured by fixing the film edge cutting part and the marking part to a support frame in a fixed position.
[0011]
[Problems to be solved by the invention]
The roll-shaped polarizing film supported by the film support part may be displaced in the width direction of the film during feeding.
[0012]
According to the above-described conventional configuration, since the film edge cutting portion and the marking portion are fixed to the support frame in a fixed position, when the polarizing film is shifted in the width direction of the film, the end of the polarizing film in the width direction is The part is displaced with respect to the cutter provided at the film end cutting part or the marker provided at the marking part, and the end part cannot be cut accurately, or the mark is accurately marked on the end part. There was a problem that it could not be granted.
[0013]
The purpose of the present invention is to accurately cut the end of the film in the width direction as the roll-shaped film supported by the film support part is fed out, or to accurately mark the end along the film longitudinal direction. It is in the point that it can be given to.
[0014]
[Means for Solving the Problems]
The structure, operation, and effect of the invention according to claim 1 are as follows.
[0015]
[Constitution]
In the film end processing mechanism described at the beginning, the film end cutting part or the marking part, and a film receiving part for receiving an end part in the width direction of the fed film from an outer side in the width direction of the film. , the support frame of the stationary state, and configured to so that is supported via the position changes freely movable body in the width direction of the film,
When the film shifts in the width direction of the film during feeding, the film receiving portion is pushed by the film and moves in the width direction, so that the film end cutting portion or the marking portion is moved with respect to the film. In this way, it is configured to follow and move in the width direction of the film.
[0016]
[Action]
When the film is shifted in the film width direction during the feeding of the film, the film receiving part is pushed by the film, the movable body is repositioned, and the film end cutting part or the marking part is in the film width direction with respect to the film. Move following.
[0017]
That is, even if the film is displaced in the width direction of the film during the feeding of the film, the film end cutting part and the marking part are not displaced relative to the end of the film.
[0018]
[effect]
Therefore, as the roll-shaped film supported by the film support portion is drawn out, the end in the width direction of the film is accurately cut, or the mark along the longitudinal direction of the film is accurately given to the end. I was able to do that.
[0019]
The structure, operation, and effect of the invention according to claim 2 are as follows.
[0020]
[Constitution]
In the configuration of the invention according to claim 1, the movable body is formed in a rod shape along the width direction of the film, and is supported by the support frame so as to be slidable through a slide bearing mechanism, and the film end portion The cutting part or the marking part and the film receiving part are provided in a holder provided on the movable body so that the position of the movable body can be adjusted in the longitudinal direction of the movable body.
[0021]
[Action]
If the film is displaced in the film width direction while the film is being fed out, the film receiving portion is pushed by the film, and the rod-shaped movable body slides in the film width direction with respect to the support frame, and the film end provided on the holder A cutting part or a marking part moves following the width direction of the film with respect to the film.
[0022]
That is, even if the film is displaced in the width direction of the film during the feeding of the film, the film end cutting part and the marking part are not displaced relative to the end of the film.
[0023]
Further, since the holder is provided on the movable body so that the position can be adjusted in the longitudinal direction of the movable body, the holder can respectively correspond to a plurality of films having different widths.
[0024]
[effect]
Therefore, as the roll-shaped film supported by the film support portion is drawn out, the end in the width direction of the film is accurately cut, or the mark along the longitudinal direction of the film is accurately given to the end. I was able to do that.
[0025]
The structure, operation, and effect of the invention according to claim 3 are as follows.
[0026]
[Constitution]
The film support part which supports a roll-shaped film, the film delivery mechanism which feeds the roll-shaped film supported by the said film support part, and the film edge part processing mechanism of Claim 1 are provided.
[0027]
[Action]
In the film supply apparatus having the above configuration, the same operation as that of the configuration of the first aspect can be achieved.
[0028]
[effect]
Therefore, in the film supply apparatus having the above configuration, the same effect as that of the configuration of the first aspect can be achieved.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 show a production facility for an optical functional film composed of a film cutting part 2 and a film bonding part 6.
[0030]
The film cutting section 2 is an apparatus for cutting out a parallelogram-shaped polarizing film cutting body 3 from a polarizing film 1 whose optical axis is parallel to the longitudinal direction of the film, and sends the roll-shaped polarizing film 1 in the longitudinal direction of the film. It comprises a polarizing film supply device 7 and a film cutting device 8 for the polarizing film 1 from the polarizing film supply device 7.
[0031]
The film bonding unit 6 includes a polarizing film cutout body 3, a retardation film 4 whose optical axis is parallel to the longitudinal direction of the film, two sides on the side where the polarizing film cutout body 3 is cut, and a phase difference. It is an apparatus which obtains an optical functional film by laminating both side edges of the film 4 along the respective states. The retardation film 4 is fed out by a retardation film feeding roller 28. Reference numeral 26 denotes a retardation film support.
[0032]
Next, the polarizing film supply device 7 of the film cutout unit 2 will be described.
[0033]
The polarizing film supply device 7 is provided with a support body 11 (corresponding to a film support portion) that rotatably supports the roll-shaped polarizing film 1, and a pair of upper and lower polarizing films that sandwich and feed the roll-shaped polarizing film 1. A feeding roller 12 (corresponding to a film feeding mechanism) is provided.
[0034]
The polarizing film 1 is wound in a roll shape with a belt-like aluminum sheet (not shown) overlapped at both ends in the width direction of the film, and foreign substances such as dust enter between the respective winding portions of the polarizing film 1. In addition, even when dust or the like is wound between the respective winding portions, it is possible to prevent the pressing shape due to dust or the like from sticking to the polarizing film 1.
[0035]
The aluminum thin plate material is separated from the polarizing film 1 by its own weight and collected on the floor side as the polarizing film 1 is unrolled and becomes a linear shape. Since the film has a pressing shape, the film portion must be cut and discarded.
[0036]
Therefore, the polarizing film supply device 7 is provided with a film edge processing mechanism A that cuts both ends of the polarizing film 1 in the width direction.
[0037]
As shown in FIGS. 3, 4, and 5, the roll end polarizing film 1 is unwound to cut the end in the width direction of the polarizing film 1 to constitute the film end processing mechanism A. A pair of left and right holders 34 each having a film end cutting part 35 and a film receiving part 33 for receiving the end part in the width direction of the polarizing film 1 fed out from the outer side in the width direction of the polarizing film 1, The support frame 31 in a fixed position is supported via a slide bar 32 (corresponding to a rod-shaped movable body) that can be reciprocated in the width direction of the polarizing film 1.
[0038]
The slide bar 32 is supported by the support frame 31 through a slide bearing mechanism 36 so as to be slidable.
[0039]
The holder 34 is configured such that the position change can be adjusted in the longitudinal direction of the slide bar 32 (see FIG. 5) and the position change can be adjusted in the vertical direction via the vertical hole 38 (see FIG. 4).
[0040]
The film end cutting portion 35 is formed by forming a cutter receiving groove 39 for the cutter 14 in the holder 34. The cutter 14 accommodated in the cutter accommodation groove 39 is fixed with a bolt.
[0041]
With the above structure, when the polarizing film 1 is displaced in the film width direction during the feeding of the polarizing film 1, the film receiving portion 33 is pushed by the polarizing film 1, and the slide bar 32 is moved in the film width direction with respect to the support frame 31. The film end-sliding portion 35 provided on the holder 34 is slid and moved following the polarizing film 1 in the width direction of the film.
[0042]
That is, even when the polarizing film 1 is displaced in the width direction of the polarizing film 1 during the feeding of the polarizing film 1, the film end cutting portion 35 (the cutter 14 thereof) is not displaced with respect to the end portion of the polarizing film 1.
[0043]
Further, since the holder 34 is provided on the slide bar 32 so that the position of the holder 34 can be adjusted in the longitudinal direction of the slide bar 32, the holder 34 can correspond to each of the plurality of polarizing films 1 having different widths.
[0044]
[Another embodiment]
As shown in FIG. 6, as the roll-shaped polarizing film 1 is unwound, a marking portion 40 is provided on the slide bar 32 for applying a mark along the longitudinal direction of the film to the end in the width direction of the polarizing film 1. May be. In FIG. 6, reference numeral 37 denotes a marker. The film end processing mechanism A has a structure in which only one of the film end cutting part 35 and the marking part 40 is provided. Also good.
[0045]
The present invention can also be applied when processing (cutting or marking) an end of a film other than the polarizing film 1.
[Brief description of the drawings]
FIG. 1 is a front view of an optical functional film manufacturing facility. FIG. 2 is a plan view of an optical functional film manufacturing facility. FIG. 3 is a plan view of a film edge processing mechanism. FIG. 5 is a view showing a film end cutting portion and a film receiving portion. FIG. 6 is a view showing another embodiment.
DESCRIPTION OF SYMBOLS 1 Film 11 Film support part 12 Film delivery mechanism 31 Support frame 32 Movable body 33 Film receiving part 34 Holder 35 Film edge part cutting part 36 Slide bearing mechanism 40 Marking part

Claims (3)

As the roll-shaped film supported by the film support portion is fed out, a film end cutting portion that cuts an end portion in the width direction of the film, and a film at the end portion as the film is fed out A film edge processing mechanism provided with at least one of a marking portion for providing a mark along the longitudinal direction of the film,
The film end cutting part or the marking part, and the film receiving part for receiving the end part in the width direction of the fed film from the outer side in the width direction of the film on the support frame in a fixed position, the film configured to so that is supported via a widthwise freely repositioning a movable member,
When the film shifts in the width direction of the film during feeding, the film receiving portion is pushed by the film and moves in the width direction, so that the film end cutting portion or the marking portion is moved with respect to the film. A film edge processing mechanism configured to follow and move in the width direction of the film.   The movable body is formed in a rod shape along the width direction of the film, and is supported by the support frame so as to be slidable through a slide bearing mechanism. The film end cutting part or the marking part and the film receiving part The film end processing mechanism according to claim 1, wherein the portion is provided on a holder provided on the movable body so that the position of the movable body can be adjusted in the longitudinal direction.   The film supply apparatus provided with the film support part which supports the roll-shaped film, the film delivery mechanism which lets out the roll-shaped film supported by the said film support part, and the film edge part processing mechanism of Claim 1 .

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