JPH05238625A - Adhesive sheet application device - Google Patents

Abstract

PURPOSE:To apply an adhesive sheet of relatively large area on a board uniformly and effective H without requiring any troublesome means by providing a pressure roller, which moves while pressing an end holding means, a guide means and an adhesive sheet, and also a driving means which forces the pressure roller to make reciprocating motion. CONSTITUTION:First, a moving body 4 is moved to an initial position off from a board 14, namely, to the right side of the drawing, an adhesive sheet 15 previously cut in a length longer than that of the board 14 is set, its end portion is stripped off and the end portion of a stripped-off sheet 17 is nipped, fixed and held by the clip 19 of a bracket 18. While the moving body 4 is in this initial position, the shaft 20 of a pressure roller 8 is supported at the lowest position of a slotted hole 21. Thereafter, the pressure roller 8 rolls as it is pressed against the top surface of the board 14 from the back side of the adhesive paper 16 of the adhesive sheet 15 by means of an endless chain 13. During this action, the pressure roller 8 is pressed down only by its tare weight and no other strength is applied. Thus the pressure roller 8 rolls over the upper surface of the board uniformly without being given any unnecessary regulation force and the adhesive sheet 15 can be applied under a constant stable condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive sheet sticking device for sticking a pressure-sensitive adhesive sheet having a release paper on the upper surface of a horizontally arranged substrate while peeling the release paper.

[0002]

2. Description of the Related Art A glass substrate used in a liquid crystal display device or the like is required to have a micron-order smoothness, so that the surface is polished by various polishing machines. For example, the Oscar polishing machine rotates a substrate with a polishing pad attached to the top surface,
Further, while the glass to be polished is rotated around an axis that is eccentric to the substrate, the substrate is planetarily moved to press the glass against the polishing pad for surface polishing. As another method, a method is also used in which a cushion material is attached to the upper surface of a large rectangular substrate, a plurality of glasses to be polished are fixedly held on the cushion material, and the upper surface side is polished.

Such a polishing pad and cushion material are
An adhesive sheet that is pasted onto a substrate using an adhesive tape or rubber-based adhesive, or has a polishing pad or cushion material formed in a sheet shape in advance and has one surface as an adhesive surface, and the adhesive surface is covered with release paper. And the adhesive sheet was attached on the substrate while peeling off the release paper on site.
Conventionally, when sticking such an adhesive sheet on a substrate,
An operator manually peels off the release paper and attaches the adhesive pad or cushioning material to the substrate.

[0004]

However, the conventional manual sticking of the adhesive sheet has a substrate length of 1 m.
If the size is increased to the above level, several workers must attach it carefully so that air or the like does not enter the adhesive surface, and the attachment work is very troublesome and labor-intensive, and the rate of air inclusion is large. It was difficult to apply evenly.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and an adhesive sheet sticking apparatus capable of sticking a relatively large area adhesive sheet uniformly and efficiently onto a substrate without requiring troublesome manual work. The purpose is to provide.

[0006]

In order to achieve the above-mentioned object, an adhesive sheet sticking apparatus according to the present invention provides a substrate with an adhesive sheet comprising an adhesive paper having an adhesive surface on one side and a release paper covering the adhesive surface. An adhesive sheet sticking device for sticking, wherein an end holding means for holding an end of the release paper at a position fixed to the substrate, and a device provided substantially parallel to the main surface of the substrate. A guide means, a pressing roller that moves along the guide means while pressing the adhesive paper against the upper surface of the substrate by its own weight from the back side of the adhesive paper, and a reciprocating movement of the pressing roller along the guide means. And driving means for

In a preferred embodiment, the edge holding means holds the edge of the adhesive paper in an unregulated state on the upper surface side of the adhesive paper near the peeling position of the adhesive paper. In a further preferred embodiment, the guide means comprises a pair of parallel guide rails provided on both sides of the substrate.

In another preferred embodiment, a moving body that slides along the guide rail is provided, and the moving body has a pair of moving frames provided on both sides of the substrate, and the moving frame has a vertical direction. A long hole is formed, and the shaft of the pressing roller is mounted in the long hole so as to be vertically movable.

The pressure-sensitive adhesive paper of the pressure-sensitive adhesive sheet of the present invention is not limited to paper materials, but includes plastics, cloth and other flexible films, and the above-mentioned polishing pads, soft materials such as cushioning materials.

[0010]

The end of the release paper of the adhesive sheet is peeled off and fixed by a holding means such as a clip, and the pressing roller is rolled on the substrate from the back side of the adhesive paper along the guide means such as a guide rail.
At this time, the pressing force is not applied to the pressure roller toward the pressure sensitive adhesive sheet, and the pressure sensitive adhesive sheet is pressed and attached onto the substrate only by its own weight.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are a side view and a plan view of an adhesive sheet sticking apparatus according to an embodiment of the present invention, respectively. A pair of parallel frame members 2 is fixed on the floor 1. Substrate 1 to which an adhesive sheet should be attached between the pair of frame members 2
4 are provided. The guide rails 3 are fixed to the frame members 2 along both side surfaces of the substrate 14 to form guide means. The guide rail 3 is made of, for example, C-shaped channel steel, and its height is adjusted together with the substrate support (not shown) so as to be parallel to the main surface of the substrate 14. A movable body 4 slidable along this guide rail is mounted via a guide roller 5. The moving body 4 has a pair of moving frames 6 on both sides of the substrate 14, and a sheet pressing roller 8 and a release paper supporting roller 10 are mounted between these frames. The guide roller 5 is attached to each frame 6. A pair of cutter rollers 9 is mounted in the moving body 4 so that the position thereof can be adjusted in the axial direction. This cutter roller 9
Is urged downward by the pressing spring 24, and the substrate 1
It is selectively held at any of a cutting position where it is pressed against the pressure-sensitive adhesive sheet on 4 and a retracted position where it is separated from the substrate by using an appropriate means.

A drive roller 7 is mounted on each frame 6 of the moving body 4. The drive roller 7 meshes with an endless chain 13 arranged below each guide roller 3. The endless chain 13 is wound between the pair of rollers 11,
One roller 11 is rotationally driven by a motor 12 via a reversible speed change mechanism (not shown). The rotation of the roller 11 in the forward and reverse directions causes the endless chain 13 to move in both directions, and via the drive roller 7 meshing with the endless chain 13, the moving main body 4
Moves back and forth as indicated by arrow A.

The pressure-sensitive adhesive sheet 15 is a laminate in which a pressure-sensitive adhesive paper 16 and a release paper 17 are laminated on the pressure-sensitive adhesive surface side. The adhesive paper 16 is composed of, for example, a glass polishing pad having a thickness of several mm. The adhesive sheet 15 is supported on the sheet supporting roller 23 in the moving body 4. Release paper 1 for adhesive sheet 15
7 is an adhesive paper 16 near the upper side of the sheet supporting roller 23.
Separate from. No member that comes into contact with the release paper 17 is placed on the upper side of the peeling portion of the adhesive sheet 15 (near the upper side of the sheet supporting roller 23), and the adhesive sheet is held in an unregulated free state.

The end of the release paper 17 is held by a clip 19 as an end holding means provided on a bracket member 18 fixed on the floor 1 (or the frame member 2). 22 is adhesive paper 16
It is a weight made of iron or the like attached to the end of the.

The shaft 20 of the pressing roller 8 is mounted movably up and down in a vertically elongated hole 21 provided in the frame 6 of the moving body 4. As a result, the pressure roller 8 becomes the adhesive paper 1.
The pressure-sensitive adhesive paper 16 is pressed from the back side of the substrate 6 by its own weight along the surface of the substrate 14 with a uniform force.

Next, the operation of the pressure-sensitive adhesive sheet sticking apparatus having the above structure will be described. First, the moving body 4 is moved to an initial position (on the right side in FIG. 1) separated from the substrate 14 and the adhesive sheet 15 is set. The adhesive sheet 15 is the substrate 1 in advance.
It is cut to an appropriate length of 4 or more.

FIG. 2 shows the set state at this initial position. The end portion of the adhesive sheet 15 is peeled off, and the end portion of the release paper 17 is sandwiched by the clip 19 of the bracket 18 and fixedly held.
At this time, as described above, another roller or the like for regulating the release paper 17 is not provided in the vicinity of the upper side of the sheet holding roller 23 that serves as the release portion of the adhesive sheet 15, and the release paper 17 is held in a free state. Thus, the release paper 17 is not unnecessarily applied to the release paper 17, and the release paper 17 is uniformly released from the adhesive paper 16 in a natural state, and the adhesive paper 16 is attached on the substrate 14 in a constant and stable state.

In this initial position, the shaft 20 of the pressure roller 8 is
Is supported at the lowermost position of the long hole 21 as shown by the solid line in FIG. A weight 22 such as an iron bar is attached to the lower end of the adhesive paper 16. In this set state, the lower end of the pressing roller 8 is lower than the upper surface of the substrate 14 by a height H. From this state, the motor 12 is driven to move the endless chain 13 to move the moving body 4 toward the board 14 (arrow B in FIG. 2). When the moving body 4 reaches the substrate 14, the pressing roller 8 comes into contact with the end portion of the substrate 14. When the moving body 4 is further moved, the shaft 20 of the pressing roller 8 is moved to the long hole 2
1, the pressing roller 8 is lifted to the upper surface of the substrate 14 as indicated by an arrow C (dashed line).

After that, the pressing roller 8 presses the adhesive paper 16 against the upper surface of the substrate 14 from the back surface side of the adhesive paper 16.
Roll over. At this time, the pressing roller 8 presses the adhesive paper 16 only by its own weight and does not apply any other force. As a result, the pressure roller 8 rolls uniformly along the upper surface of the substrate without being subjected to an unnecessary regulation force, the mixture of air or the like is reduced as much as possible, and the adhesive paper 16 is attached on the substrate 14 in a stable state. ..

When the moving main body 4 passes over the entire surface of the substrate 14, the entire length of the adhesive sheet 15 is peeled off and the adhesive paper 16 is stuck on the entire upper surface of the substrate, the moving main body 4 stops, and then the endless chain 13 reverses. The moving body 4 moves and returns to the initial position. During this return movement, the cutter roller 9 is lowered to the cutting position where it comes into pressure contact with the substrate surface, and the adhesive paper 16 on the substrate 14 is cut into a desired width.
The moving main body 4 returns to the initial position, the adhesive paper at both ends in the length direction of the substrate is cut and removed, and the sheet attaching operation is completed.

[0021]

As described above, in the pressure-sensitive adhesive sheet sticking apparatus according to the present invention, the pressure roller that rolls along the substrate surface by pressing the pressure-sensitive adhesive paper from the back side by its own weight while peeling off the release paper. As a result, the adhesive paper can be attached to the surface of the substrate uniformly and reliably and with minimal inclusion of air into the adhesive surface, without the need for troublesome manual work. Can be significantly improved.

It should be noted that the pressure roller presses the adhesive paper only by its own weight to maximize the effect of uniformly adhering the adhesive paper along the substrate surface. It is also possible to change the pressing force against the adhesive paper by adjusting the spring.

[Brief description of drawings]

1A and 1B are respectively a schematic side view and a schematic plan view of an adhesive sheet sticking apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a main part action of the adhesive sheet sticking device of FIG.

[Explanation of symbols]

 3; guide rail 4; moving body 5; guide roller 6; moving frame 7; drive roller 8; pressing roller 13; endless chain 14; substrate 15; adhesive sheet 16; adhesive paper 17; release paper 19; clip 20; pressing roller Axis 21; long hole

Claims (4)

[Claims] 1. A pressure-sensitive adhesive sheet sticking device for sticking a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive paper having one surface as a pressure-sensitive adhesive surface and a release paper covering the pressure-sensitive adhesive surface to a substrate, wherein an end portion of the release paper is the substrate. End holding means for holding the adhesive paper at a fixed position, guide means provided substantially parallel to the main surface of the substrate, and the adhesive paper from the back side of the adhesive paper on its upper surface by its own weight. A pressure-sensitive adhesive sheet sticking apparatus comprising: a pressing roller that moves along the guide means while pressing against it; and a driving means that reciprocates the pressing roller along the guide means. 2. The edge holding means is configured to hold the edge of the release paper in an unregulated state on the upper surface side of the release paper near the release position of the release paper. 1. Adhesive sheet sticking device. 3. The adhesive sheet sticking device according to claim 1, wherein the guide means comprises a pair of parallel guide rails provided on both sides of the substrate. 4. A moving body that slides along the guide rail is provided, and the moving body has a pair of moving frames provided on both sides of the substrate, and the moving frame has a vertically elongated hole formed therein. 4. The adhesive sheet sticking device according to claim 3, wherein the shaft of the pressing roller is mounted in the elongated hole so as to be vertically movable.