JPH11300837A - Film attaching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To upgrade attachment accuracy of a film and simplify a structure of a device by providing a second cylindrical part which is rotatable with a first cylindrical part with plural holes formed on the peripheral face and is rotatable, in the first cylindrical part, and causing a suction force to be generated in the holes opposite to an opening part on the peripheral face of the second cylindrical part to retain the film on the peripheral face of the first cylindrical part. SOLUTION: A film retaining part comprises the sleeve 51 of a first cylindrical part and the bushing 52 or the like of a second cylindrical part, and the sleeve 51 is set in a freely rotatable manner with a shaft CL can has plural holes 51a formed on the circumferential face. In addition, the bushing 52 is arranged on the inner peripheral face of the sleeve 51, and is set to be rotatable on the sleeve 51 through a bearing. Further, a film FM is wound around a region on the outer peripheral face of the sleeve 51 and an atmospheric air present in the hollow part 52a of the bushing 52 is discharged from a vacuum supply source 53 through an opening part 54 and the holes 51a formed in the bushing 52. Consequently, no air is entrapped as the film FM is retained by the film retaining part all along, so that the film FM is not deviated out of position due to creasing or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a film sticking apparatus, and more particularly, to a film sticking apparatus capable of accurately sticking a film to an object.

[0002]

2. Description of the Related Art For example, a cathode ray tube is provided with a protective film made of glass for protecting the panel surface and an antireflection film for improving visibility. To form the protective film or the antireflection film, there are a method of directly applying the protective material and the antireflection material to the panel surface, and a method of attaching a film coated with these materials to the panel surface. Among these methods, the method of directly applying the protective material to the panel surface has problems that the working efficiency is low and that the method cannot be applied uniformly to the panel surface. For this reason,
In consideration of productivity and the like, a method of attaching a film to a panel surface is generally used.

When a film is attached to the panel surface, the glass is positioned at a predetermined position, and a film cut to a predetermined size is attached to the glass. Here, FIG. 9 shows an example of a film sticking section in a conventional film sticking apparatus, and the film sticking section 1 will be described with reference to FIG. 9A includes a film holder 2, a rubber roll 3, and the like, and is disposed on a glass plate GP to which the film FM is to be attached.

[0004] The film holder 2 is a suction table 2
a and a frame 2b, and the suction table 2a is held by the frame 2b. The suction table 2a is connected to vacuum means and can hold a film FM supplied from a film supply unit (not shown). The rubber roll 3 is for sticking the film FM to the glass plate GP, and is provided so as to be movable in the directions of the arrows X and Y and rotatable in the direction of the arrow R1.

Next, an example of a conventional film sticking method will be described with reference to FIG. First, as shown in FIG. 9A, the film holding unit 2 holds the film FM from a film supply unit (not shown) by vacuum suction, and
Positioned on P. Next, as shown in FIG. 9B, the film holding unit 2 and the rubber roll 3 move in the direction of the arrow Y1, and the film FM is attached to the glass plate GP. At this time, the film FM is adhered to the glass plate GP by pressing the rubber roll 3 while moving on the film FM in the direction of arrow X1.

Thereafter, as shown in FIG. 9 (C), while moving the rubber roll 3 in the direction of arrow X1, the film holding unit 2 also moves in the direction of arrow X1 at the same time, and as shown in FIG. FM is attached to the surface of the glass plate GP. Then, the glass plate GP1 to which the film FM is attached is accommodated in a glass accommodation portion (not shown), and the glass plate GP to which the film FM is not attached is supplied.

[0007]

However, when the film FM is attached to the glass plate GP by the above-described method, there is a problem that the attaching accuracy of the film FM is reduced. Specifically, the rubber roll 3 converts the film FM into a glass plate GP.
When the rubber roll 3 moves in the direction of the arrow X1 while pressing the film FM, the adhesive on the back surface of the film may come into contact with the glass plate before the rubber roll 3 presses the film FM. At this time, there is a problem that air enters between the film FM and the glass plate GP, or a position where the film FM is stuck is shifted.

Further, in order to solve the problem that air enters between the film FM and the glass plate GP, there is also a sticking method that uses a vacuum device to prevent air from entering. However, since a separate vacuum device is required, there is a problem that the structure of the entire film sticking device becomes complicated.

Accordingly, an object of the present invention is to provide a film sticking apparatus which solves the above problems, improves the film sticking accuracy, and simplifies the structure of the apparatus.

[0010]

According to the present invention, there is provided an object supply unit for supplying an object, a film supply unit for supplying a film to be attached to the object, and a supply from the film supply unit. And a film sticking unit having a film holding unit for holding the film to be attached to a target object, the film holding unit has a plurality of holes on the peripheral surface, rotatable And a first cylindrical portion provided in the first cylindrical portion, the first cylindrical portion being coaxially rotatable with respect to the first cylindrical portion, and a hollow portion being connected to a vacuum supply source. And a second cylindrical portion having an opening formed in a peripheral surface thereof. When a vacuum supply source is operated, a suction force is generated in a plurality of holes facing the opening, and The film is held on the outer peripheral surface of the cylindrical part. The film sticking apparatus is achieved.

In the present invention, the atmosphere is exhausted from the opening of the second cylindrical portion by the vacuum supply source, and the first air is discharged through the hole of the first cylindrical portion.
The film is held on the outer peripheral surface of the cylindrical portion. Then, the first cylindrical portion rotates while pressing the film against the object, and sticks the film to the object. At this time, the position of the opening is moved by the rotation of the second cylindrical portion with respect to the first cylindrical portion, and the suction force of the portion attached to the object is released.

Thus, since the film is held by the film sticking portion until the film is stuck to the object, air does not enter between the film and the object. At the same time, the positioning of the film with respect to the object is reliably performed, so that the accuracy of attaching the film can be improved. Further, since it is not necessary to separately provide a vacuum device for preventing air from entering between the film and the object, the structure of the entire device can be simplified.

[0013]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples of the present invention,
Although various technically preferable limits are given, the scope of the present invention is not limited to these modes unless otherwise specified in the following description.

FIG. 1 is a system diagram showing a preferred embodiment of the film sticking apparatus of the present invention. The film sticking apparatus 10 will be described in detail with reference to FIG. FIG.
The film sticking apparatus 10 includes an object supply unit 20, a belt conveyor 30, a film sticking unit 40, and a film feeding unit 7.
It consists of 0 mag. FIG. 2 is a top view of a portion around the object supply unit 20, and the object supply unit 20 will be described in detail with reference to FIGS. Object supply unit 20
Supplies a glass plate GP as an object,
For example, a plurality of glass plates GP are arranged in an overlapping manner. The glass supply unit 20 can push up the glass plate GP in the arrow Y2 direction, and a pusher 21 is disposed around the glass supply unit 20. The pusher 21 can push out the glass plate GP in the direction of the arrow X <b> 2 and move the glass plate GP onto the belt conveyor 30 disposed at a position facing the pusher 21. The belt conveyor 30 is rotating in the arrow X2 direction, and the glass plate GP can be placed on the upper surface. The glass plate GP is placed on the belt conveyor 30 from the object supply unit 20, and is attached to the film attaching unit 40.
Supplied to

FIG. 3 is a structural view showing a peripheral portion of the film sticking section 40. The film sticking section 40 will be described in detail with reference to FIGS. 1 and 3 includes a film holder 50, a moving stage 60, and the like. The moving stage 60 is disposed at an end of the belt conveyor 30, and is provided so as to be movable in the arrow X direction. A film holding unit 50 is disposed above the moving stage 60.
Can move in the directions of arrows X and Y, respectively.

FIGS. 4 and 5 are a sectional view taken along the line AA and a sectional view taken along the line BB of the film holding portion 50 in FIG. 3, respectively. The film holding portion 50 in FIG. 4 is a first cylindrical portion. It comprises an outer cylinder 51, an inner cylinder 52 as a second cylinder part, and the like. The outer cylinder 51 has a plurality of holes 51a in a direction substantially perpendicular to the axis CL.
Are formed on the circumferential surface, and the outer cylinder 51 is provided rotatably with respect to the axis CL. As shown in FIG.
Is wound around a mask tape MP, and a film FM is wound around a portion 51b of the outer periphery. The mask tape MP is provided so as not to suck the film FM at a place other than the predetermined portion 51b of the outer cylinder 51.

An inner cylinder 52 is arranged on the inner peripheral surface of the outer cylinder 51, and the inner cylinder 52 is mechanically connected to the outer cylinder 51 via a bearing 56. The hollow portion 52a of the inner cylinder 52 is connected to a vacuum supply source 53, and the air in the hollow portion 52a is exhausted by the vacuum supply source 53. As shown in FIG.
Is formed so that the size of the opening 54 is substantially the same as the size of the film FM to be attached to the glass plate GP. As shown in FIG. 6, a rubber seal 55 is attached to the edges 54a of the opening 54, and the rubber seal 55 is provided with a suction force generated from the opening 54 above the opening 54. This is for preventing leakage from a predetermined area of the outer cylinder 51. The inner cylinder 52 is provided rotatably with respect to the outer cylinder 51, and has an opening 54 with respect to the outer cylinder 51.
Can be changed in relative position.

Next, the film supply unit 70 will be described in detail with reference to FIG. The film supply unit 70 includes an unwinding unit 71, a winding unit 73, and the like.
Is a carrier tape CP with a film FM attached
Is wound. The film FM is attached to the carrier tape CP via an adhesive and a separator. In addition, the film FM, the adhesive, and the separator are cut in advance to a size to be attached to the glass plate GP. The carrier tape CP is composed of the driving roll 73a and the nip roll 7
3b, it is fed in the direction of the arrow X1, passes through the guide rolls 75 and 76, and is taken up by the take-up portion 73. At this time, the film holding unit 50 is positioned between the guide roll 75 and the guide roll 76, and the carrier tape C
The film FM placed on P is held by suction.

Next, an example of the operation of the film sticking apparatus 10 will be described in detail with reference to FIGS. First,
The object supply unit 20 of FIG. 1 operates to push up the glass plate GP in the direction of the arrow Y2. Then, the pushed glass plate GP is placed on the belt conveyor 30 by the pusher 21. The glass plate GP placed on the belt conveyor 30 moves in the direction of the arrow X1 to move the film
Sent to 0. On the other hand, in the film supply unit 70, the carrier tape CP to which the film FM is attached is sent from the unwinding unit 71 in the direction of the arrow X1. Then, the film is held by the film holding unit 50 disposed between the guide roll 75 and the guide roll 76. At this time, the film holding unit 50 in FIG. 4 holds the film FM through the opening 54 and the hole 51a by the operation of the vacuum supply source 53.

A film holding section 5 holding a film FM
0 moves in the directions of the arrows Y2 and X1, and is positioned on the moving stage 60. On the other hand, the glass plate GP sent by the belt conveyor 30 is placed on the moving stage 60. FIG. 8 is a diagram showing an operation of attaching the film FM, and the operation of attaching the film will be described in detail with reference to FIG. First, as shown in FIG. 8A, a film holding unit 50 is placed on a film FM having a predetermined size and mounted on a carrier tape CP.
The end 54a of the opening 54 of the inner cylinder 52 is positioned.
Then, while the vacuum supply source 53 operates and the hole 51a attracts the film FM via the opening 54, the film holding unit 50 rotates in the direction of the arrow R11.

Thereafter, as shown in FIG. 8 (B), the film holder 50 holds the film FM, and then moves in the direction of arrow Y1 to remove the separator from the film FM. Then, it moves in the arrow X1 direction and the arrow Y1 direction in FIG.
It is positioned on the moving stage 60 as shown in FIG. The film holding unit 50 rotates in the direction of the arrow R12 to stick the film on the glass plate GP. Then, only the outer cylinder 51 rotates in the direction of the arrow R12 with respect to the inner cylinder 52. As a result, the position where the opening 54 and the film FM are adhered changes relatively, and the film FM
Is released at the position where the suction force is applied to the glass plate GP.

Then, as shown in FIG.
While rotating in the direction of arrow R12,
Is moved in the direction of the arrow X2 to attach the film FM to the glass plate GP, and the attaching operation is completed as shown in FIG. Thereafter, the glass plate GP to which the film FM is attached is pushed in the direction of arrow Z1 by the pusher 80 as shown in FIG.

According to the above embodiment, since the film FM is held by the film holding unit 50 from the beginning to the end of the operation of attaching the film FM, there is no possibility that air will be trapped during the attaching operation. Further, since the entire surface of the film FM is held on the outer peripheral surface of the outer cylinder 51, positional deviation due to wrinkles and the like and positioning with respect to the glass plate GP can be performed with high accuracy. For this reason, film FM
Can be performed with high accuracy. Furthermore, since air is not inserted between the film FM and the glass plate GP without using a vacuum device, the structure of the entire device can be simplified.

The present invention is not limited to the above embodiment. In the above embodiment, the adhesive for bonding the glass plate GP and the film FM is the same as that of the film FM.
Although it is provided on the side, it may be applied on the glass plate GP side. Further, the above-mentioned target object is not limited to a glass plate, and may be used for wood, plastic, other metal, or the like. Further, although the glass plate is formed in a plate shape, even if it is formed in a curved surface shape, the film can be stuck with high accuracy because the film holding portion 50 is formed in a cylindrical shape. When the film FM is attached to the glass plate GP, the film holding unit 50 moves in the direction of arrow X2 to perform the attachment.
The sticking may be performed by moving the glass plate GP in the direction. A rubber seal 55 is disposed at the edges 54a and 54a of the opening 54 shown in FIG. It may not be added to the area other than the area.

[0025]

As described above, according to the present invention,
It is possible to provide a film sticking device that improves the film sticking accuracy and simplifies the structure of the device.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a preferred embodiment of a film sticking apparatus of the present invention.

FIG. 2 is a configuration diagram showing a peripheral part of a glass supply unit in the film sticking apparatus of the present invention.

FIG. 3 is a configuration diagram showing a peripheral portion of a film sticking section in the film sticking apparatus of the present invention.

FIG. 4 is a sectional view showing a film holding unit in the film sticking apparatus of the present invention.

FIG. 5 is a sectional view showing a film holding unit in the film sticking apparatus of the present invention.

FIG. 6 is an enlarged sectional view showing a film holding section in the film sticking apparatus of the present invention.

FIG. 7 is a configuration diagram showing a portion around a film sticking section in the film sticking apparatus of the present invention.

FIG. 8 is an operation diagram showing a film sticking section in the film sticking apparatus of the present invention.

FIG. 9 is an operation diagram showing an example of a conventional film sticking apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Film sticking apparatus, 20 ... Object supply part, 40 ... Film sticking part, 50 ... Film holding part, 51 ... Outer cylinder, 51a ... Hole, 52 ... Inner cylinder, 54 ... opening, 70 ... film supply unit, M
P: mask tape, FM: film, GP ...
・ Glass plate (object).

Claims (4)

[Claims] An object supply unit for supplying an object, a film supply unit for supplying a film to be attached to the object,
A film sticking unit having a film holding unit for holding the film supplied from the film supply unit and sticking the film to an object, wherein the film holding unit has a plurality of holes on a peripheral surface. A first cylinder portion rotatably provided; and a first cylinder portion disposed coaxially with the first cylinder portion in the first cylinder portion so as to be rotatable with respect to the first cylinder portion. A second cylindrical portion connected to the source and having an opening formed in a peripheral surface thereof, and when a vacuum supply source is operated, a suction force is generated in a plurality of holes facing the opening. A film sticking device, wherein the film is held on the outer peripheral surface of the first cylindrical portion. 2. The film sticking apparatus according to claim 1, wherein the opening is formed to have substantially the same size as the film. 3. The film sticking apparatus according to claim 1, wherein a mask tape for preventing the film from being sucked is stuck to a portion of the outer peripheral surface of the first cylindrical portion other than a region for holding the film. 4. The film sticking apparatus according to claim 1, wherein the object is formed of a plate-like glass.