JPH10125229A - Method and device for attaching protective sheet of crt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for attaching a protective sheet of a CRT to which the protective sheet can attach without applying an adhesive to the panel face of the CRT. SOLUTION: A protective sheet 20 provided with an adhesive part 22A in an edge part sticking out of a region corresponding to a panel face 12 of a CRT 10 is used. After the protective sheet 20 is placed on the panel face 12 of the CRT 10, guide rollers 36A and 36B are rolled so that the edge part including the adhesive part 22A of the protective sheet 20 is folded over the side part of the CRT 10, then attaching the adhesive part 22A to the side part of the CRT 10. Subsequently, a corner edge part of the protective sheet 20 sticking into a corner part of the CRT 10 is folded to be attached to the corner part of the CRT 10 by means of the guide rollers in the peripheral direction of the panel face 12. Moreover, the remaining edge part of the protective sheet 20 is folded by means of a guide plate in the lateral direction of the CRT 10, thus completing the attachment of the protective sheet 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for attaching a protective sheet on a panel surface to a CRT.

[0002]

2. Description of the Related Art Conventionally, when a CRT is shipped,
2. Description of the Related Art A protective sheet is attached to a panel surface of an RT. FIG. 6 is a schematic perspective view showing an example of a conventional protective sheet sticking apparatus. The conventional protection sheet 100 is
One entire surface thereof is formed as an adhesive surface to the panel surface 12 of the CRT 10, and is held so as to be able to be pulled out while being wound around the protective sheet roll 102.

[0003] In the conventional protective sheet sticking apparatus, first, the pulling hands 108A, 108A are pulled out from the protective sheet roll 102 through two guide rollers 104, 106.
08B, the protective sheet 100 is pulled out to a predetermined sticking position. The guide roller 104 is a fixed roller, and the guide roller 106 is a roller for removing slack. On the other hand, the CRT 10 is transported by a transport device (not shown), and is positioned and arranged so that the panel surface 12 faces the attaching position. In this state, the guide roller 1
10 moves to the panel surface 12 side of the CRT 10, and the protective sheet 10 is moved between the guide roller 110 and the panel surface 12.
0 is pinched.

Here, a pair of holding plates 112A, 112B
Panel surface 1 by a cutting mechanism having a
2. The upper protective sheet 100 and the protective sheet roll 102 are separated. Then, the guide roller 110 is moved to the CRT 10
Then, the adhesive surface of the protection sheet 100 is attached to the panel surface 12. As shown, the panel surface 12 of the CRT 10 has a curvature in the long side direction, and is almost horizontal in the short side direction. Therefore, the guide roller 110 has its axis aligned along the short side direction of the panel surface 12 so that it can be in close contact with the panel surface 12. Then, the guide roller 11 extends along the curvature in the long side direction.
0 is moved so that the protective sheet 100 is properly attached.

[0005] Further, in this protective sheet sticking apparatus,
At the stage where the protective sheet 100 is attached to the panel surface 12 of the CRT 10 as described above, the attaching operation is completed. Therefore, the protection sheet 100 is C
This is a state in which the protection sheet 100 is merely attached to the panel surface 12 of the RT 10, and the edge of the protection sheet 100 is left as it is protruding from the panel surface 12. Therefore, conventionally, the edge of the protective sheet 100 has been folded into the side of the CRT 10 at the time of packing after the protective sheet attaching operation.

[0006]

By the way, in the above-mentioned prior art, the protective sheet 100 having an adhesive surface on one side.
Is adhered to the panel surface 12 of the CRT 10, the adhesive remains on the panel surface 12 after the protective sheet 100 is peeled off from the panel surface 12, and the panel surface 12 becomes dirty. However, there is a problem that it cannot be easily removed.

[0007] This is caused by the temperature conditions in the work of attaching the protective sheet, the aging conditions after attaching, and the degree of residual air and wrinkles between the panel surface and the protective sheet. It was difficult to take effective measures. Therefore, an object of the present invention is to provide a method and an apparatus for attaching a protective sheet to a CRT, which can attach a protective sheet without attaching an adhesive to the panel surface of the CRT.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of attaching a protection sheet for a panel surface to a CRT, the edge portion of the CRT protruding from a region corresponding to the panel surface. A first step of pulling out the protection sheet provided with the adhesive portion from the protection sheet roll and disposing the protection sheet on the panel surface of the CRT so as to face the first sheet; A second step of holding between the body and the panel surface of the CRT, and a third step of cutting and separating the protection sheet held between the first guide body and the panel surface of the CRT from the protection sheet roll. Step and the movement of the first guide body bends an edge portion of the protective sheet on the panel surface of the CRT having an adhesive portion, and attaches the adhesive portion to a side portion of the CRT. And having a step. The present invention also relates to a sticking device for sticking a protection sheet on a panel surface to a CRT, wherein the protection sheet provided with an adhesive portion at an edge protruding from a region corresponding to the panel surface of the CRT is provided on a CRT panel. Means for arranging the adhesive portion on the surface of the CRT, and bending the edge having the adhesive portion of the protective sheet disposed on the panel surface of the CRT so that the adhesive portion is formed on the CRT.
And first guide means for sticking to the side of the first guide.

In the protective sheet sticking method of the present invention, the edge of the protective sheet having the adhesive portion is bent along the side of the panel surface of the CRT so that the adhesive portion has a CR.
Since the protective sheet can be stuck to the CRT by sticking to the side of T, the adhesive part of the protective sheet is C
Since it does not contact the panel surface of the RT, the adhesive does not adhere to the panel surface, and there is no contamination by the adhesive.

Further, in the protective sheet sticking apparatus of the present invention, the edge of the protective sheet, which is opposed to the panel surface of the CRT by the arranging means, is placed on the side of the panel surface of the CRT by the first guide means. By bending the protective sheet along the edge of the CRT, the adhesive sheet provided on the edge of the protective sheet adheres to the side of the CRT, so that the protective sheet can be attached to the CRT. Therefore, the pressure-sensitive adhesive does not adhere to the panel surface, and no dirt is generated by the pressure-sensitive adhesive.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method and an apparatus for attaching a protective sheet to a CRT according to the present invention will be described. 1 to 4 are schematic perspective views showing an example of a protective sheet pasting apparatus according to the present invention, and FIG. 1 shows states of first to third steps of a protective sheet pasting operation in this apparatus. . Similarly, FIG. 2 shows a state of the fourth step, FIG. 3 shows a state of the fifth step, and FIG. 4 shows a state of the sixth step. Also,
FIG. 5 is a front view showing a specific example of a protective sheet roll of a protective sheet used in this protective sheet sticking apparatus.

The protective sheet 20 used in the present apparatus has a band-shaped adhesive portion 22A provided on both side edges in the width direction orthogonal to the winding direction of the protective sheet roll 24 along the winding direction. That is, the edges of the protective sheet 20 are arranged on both sides of the wide central non-adhesive main sheet 20A, with the non-adhesive side sheets 20B having a small width at predetermined intervals, and the main sheet 20A and the side sheets 20B and Are connected by a vinyl tape 22 having one surface as an adhesive surface, and the adhesive portion 22A is constituted by the adhesive surface of the vinyl tape 22 exposed from the gap between the main sheet 20A and the side sheet 20B. The configuration of the protective sheet 20 is arbitrary, and a non-adhesive sheet in which an adhesive is directly applied to both sides may be used.

The width of the protection sheet 20 is the same as that of the CRT 10.
Of the panel surface 12 of the CRT 10, the adhesive sheet 22A is disposed at a position protruding outside the panel surface 12 of the CRT 10 in a state in which the protective sheet 20 is arranged to face the panel surface 12 of the CRT 10. Is what is done. Note that, specifically, the width of the main sheet 20A is, for example, 400 mm, the width of each adhesive portion 22A is, for example, 10 mm, and the width of each side sheet 20B is, for example, 30 mm.

Such a protective sheet 20 is pulled out from a state wound around the core 24A of the protective sheet roll 24 by a draw-out mechanism, which will be described later, of the protective sheet sticking apparatus, and is cut and used as appropriate. Hereinafter, the protective sheet sticking apparatus in this example will be described.
First, in FIG. 1, the protection sheet 20 wound around the protection sheet roll 24 is pulled out to a predetermined sticking position by a pair of draw-out hands 30A and 30B via a plurality of guide rollers 26 and 28.

More specifically, when the protective sheet 20 used in the process for the immediately preceding CRT 10 is cut by the cutter 32, the leading end of the protective sheet 20 subsequently pulled out from the protective sheet roll 24 is a pair. Are held from above and below by the holding plates 34A, 34B. In this state, the drawer hands 30A and 30B advance to the positions of the holding plates 34A and 34B, hold the leading end of the protective sheet 20, and then release the holding state by the holding plates 34A and 34B. 30B
Is moved backward, the protection sheet 20 can be pulled out to the sticking position.

The holding plates 34A and 34B have cutters 3 attached thereto.
2, a groove 34a cut out rearward from the cutting line is formed.
OB can pinch the front end of the protection sheet 20. On the other hand, the CRT 10 is transported by a transport device (not shown), and is positioned and arranged so that the panel surface 12 faces the attaching position. In this example, as shown in FIG. 1, the protection sheet 20 is drawn out in the short side direction of the panel surface 12 of the CRT 10. As described above, the process of pulling out the protection sheet 20 from the protection sheet roll 24 and disposing the protection sheet 20 on the panel surface 12 of the CRT 10 is the first step in this protection sheet sticking operation.

Next, a pair of guide rollers 36A serving as a first guide body is provided from above the protective sheet 20 which is disposed on the panel surface 12 of the CRT 10 as described above.
36B is lowered, and the protective sheet 20 is sandwiched between the guide rollers 36A, 36B and the panel surface 12 of the CRT 10. This process is the second step in the protection sheet sticking operation of this example. Here, the guide roller 3
6A and 36B are formed slightly shorter in correspondence with the length of the panel surface 12 in the short side direction, and are provided in parallel with the short side direction. Note that the panel surface 12 is formed substantially straight in the short side direction, and the guide rollers 36A and 36B are formed in a straight cylindrical shape corresponding to this. Each of the guide rollers 36A and 36B is formed of an elastic body such as rubber so that a stable pressure contact state can be obtained.

Then, as described above, the guide rollers 36A,
In a state where the protection sheet 20 is held between the panel 36 and the panel surface 12, the protection sheet 20 is held between the holding plates 34A and 34B, and the cutter 32 is moved along the holding plates 34A and 34B by the arrow Y0 in FIG. By running in the direction,
The protective sheet 20 on the panel surface 12 side is
Separate from 4. This process is the third step in the protection sheet sticking operation of this example. The holding state of the holding plates 34A and 34B in the third step is as follows.
After that, it is held until the first step of drawing out the next protective sheet 20 by the drawer hands 30A and 30B.

Next, as shown by the arrow Y1 in FIG. 2, the above-described guide rollers 36A and 36B roll along the curvature in the long side direction of the panel surface 12, and Along the side of the CRT 10. This allows
The edge of the protective sheet 20 having the adhesive portion 22A is CRT1.
0 is bent to the side of the CRT 10
, For example, the HS band. When the guide rollers 36A and 36B are moved, the guide rollers 36A and 36B are urged by urging means (not shown) so as to be in pressure contact with the panel surface 12 of the CRT 10 or the side surface of the CRT 10. Thus, a proper adhesion state and a reliable adhesion state of the adhesive portion 22A can be obtained.

This process is the fourth step in the protective sheet sticking operation of the present embodiment. By this step, the protective sheet 20 is fixed on the panel surface 12 of the CRT 10. Next, as shown in FIG. 3, each corner edge of the protection sheet 20 which protrudes outward from each corner of the CRT 10 by the above-described fourth step is CR
A process of sticking to each corner of T10 is performed. This process is the fifth step in the protection sheet sticking operation of this example.

This is achieved by moving the four guide rollers 38A to 38D as the second guide members arranged close to the respective corners of the CRT 10 as shown by the arrow Y2 in FIG. CR at each corner edge of
It is bent in the circumferential direction of the panel surface 12 along each corner of T10. Since each corner edge of the protective sheet 20 includes the end of the above-mentioned adhesive portion 22A, the protective sheet 20 is bent by bending each corner edge in a direction in which the adhesive surface contacts the side surface of the CRT 10. Can be adhered to each corner of the CRT 10.

More specifically, each of the guide rollers 38A to 38D
Is pressed against the short side of each corner of the CRT 10 and rolled to the long side while maintaining the pressed state along the curvature surface of each corner, so that each corner of the protection sheet 20 is Can be adhered to each corner. An HS band ear 40 for attachment is formed at each corner of the CRT 10, and the guide roller 3
8A to 38D are formed to be short so as not to be engaged with the respective HS band ears 40, and move at the respective corners of the CRT 10 so as to avoid the respective HS band ears 40.

Each of the guide rollers 38A to 38D also has
Like the guide rollers 36A and 36B described above, the guide rollers 36A and 36B are formed of an elastic body such as rubber. Next, as shown in FIG. 4, a process of bending the edge of the protection sheet 20 protruding from the long side of the CRT 10 to the side of the CRT 10 is performed. That is, since the edge portion does not include the adhesive portion 22A,
The processing is only to bend the side of the CRT 10. This is the sixth step in the protective sheet sticking operation of the present example.

More specifically, a pair of guide plates 42A, 42 serving as a third guide body are provided along the long side of the CRT 10.
By lowering B as shown by the arrow Y3 in FIG. 4, the edge of the protective sheet 20 is bent to the side of the CRT 10. At this time, the edge of the protection sheet 20 is connected to the guide plate 42A,
By pressing the side of the CRT 10 by 42B, the bent state of the edge of the protection sheet 20 is maintained as much as possible after this work. As described above,
The protection sheet 20 is bent along the outer periphery of the panel surface 12 of the CRT 10, and is CR
It is adhesively held on the side of T10. Thus, the work of attaching the protection sheet is completed, and the CRT 10 is transported to the next step by the transport device.

[0025]

As described above, according to the present invention, CR
The adhesive sheet is adhered to the side of the CRT by bending a protective sheet having an adhesive section at the edge protruding from the area corresponding to the panel surface of the T along the side of the panel surface of the CRT. Thus, the protection sheet was attached to the CRT. For this reason, since the adhesive part of the protective sheet does not contact the panel surface of the CRT, the adhesive does not adhere to the panel surface, and no stain is caused by the adhesive.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing states of first to third steps in an embodiment of a protective sheet sticking apparatus according to the present invention.

FIG. 2 is a schematic perspective view showing a state of a fourth step of the protective sheet pasting device shown in FIG. 1;

FIG. 3 is a schematic perspective view showing a state of a fifth step of the protective sheet pasting device shown in FIG. 1;

FIG. 4 is a schematic perspective view showing a state of a sixth step of the protective sheet pasting device shown in FIG. 1;

FIG. 5 is a front view showing a specific example of a protective sheet roll of the protective sheet used in the protective sheet pasting apparatus shown in FIG.

FIG. 6 is a schematic perspective view showing an example of a conventional protective sheet sticking apparatus.

[Explanation of symbols]

10 CRT, 12 Panel surface, 20 Protective sheet, 20A Main sheet, 20B Side sheet, 22 Vinyl tape, 22A Adhesive part, 24
... Protective sheet rolls, 26, 28, 36A, 36B, 3
8A to 38D: guide roller, 30A, 30B: drawer hand, 32: cutter, 34A, 34B: holding plate, 42A, 42B: guide plate.

Claims (15)

[Claims] 1. A method of attaching a protection sheet on a panel surface to a CRT, comprising: a protection sheet provided with an adhesive portion on an edge protruding from a region corresponding to the panel surface of the CRT; First to be pulled out and arranged to face the CRT panel surface
A second step of sandwiching a protection sheet, which is disposed on the panel surface of the CRT, between the first guide body and the panel surface of the CRT; and a first guide body and a panel of the CRT. A third step of cutting and separating the protective sheet held between the protective sheet roll and the protective sheet roll from the protective sheet roll; and having the adhesive portion of the protective sheet on the panel surface of the CRT by moving the first guide body. Bend the edge,
A fourth step of attaching the adhesive portion to a side portion of the CRT, the method comprising: attaching a protective sheet to the CRT. 2. The method according to claim 4, wherein the corners of the protective sheet that have protruded into the corners of the CRT and that have sticky portions are further extended by a second guide body.
5. The method according to claim 1, further comprising a fifth step of bending and attaching in a circumferential direction of the panel surface along the corner of the panel. 3. After the fifth step, the remaining edge of the protective sheet, which is not stuck by the first and second guides, is folded by the third guide toward the side of the CRT. 3. The method according to claim 2, further comprising a sixth step of bending. 4. The method according to claim 1, wherein the step of attaching the corners of the protective sheet having the adhesive portion is performed by the second guide so as to avoid the mounting ears protruding from the respective corners of the CRT. 3. The method according to claim 2, wherein the CRT is bent. 5. A sticking device for sticking a protection sheet on a panel surface to a CRT, wherein the protection sheet having an adhesive portion on an edge protruding from a region corresponding to the panel surface of the CRT is attached to the panel surface of the CRT. Arranging means for arranging the adhesive sheet on the panel surface, and first guide means for bending an edge portion of the protective sheet having an adhesive portion disposed on the panel surface of the CRT and attaching the adhesive portion to a side portion of the CRT. A protective sheet sticking apparatus for a CRT, comprising: 6. A CRT by the first guide means.
A second guide means for further bending and attaching a corner edge portion of the protective sheet having an adhesive portion protruding into the corner portion of the CRT along the corner portion of the CRT in a circumferential direction of the panel surface. The protective sheet sticking apparatus for a CRT according to claim 5, characterized in that: 7. A third guide means for bending a remaining edge portion of the protective sheet, which is not stuck by the first and second guide means, in a side direction of the CRT. An apparatus for attaching a protective sheet to a CRT according to claim 6. 8. The first guide means has a pair of first guide bodies corresponding to the panel surface of the CRT, and the first guide means is configured to move the protection sheet disposed on the panel surface of the CRT to each of the first guide members. Of the protective sheet and the edge portion having the adhesive portion of the protective sheet is bent while the first guide member is moved between the first guide member and the CRT.
6. The CRT protective sheet pasting device according to claim 5, wherein the device is attached to a side portion of the CRT. 9. The second guide means includes four second guide bodies which move in the circumferential direction of the panel surface along each corner of the CRT, and the first guide means causes the CRT to move. Are bent along the corners of the CRT by the second guide body, and the adhesive parts are attached to the corners of the CRT. 7. The protective sheet sticking apparatus for a CRT according to claim 6, wherein: 10. The CR according to claim 9, wherein each of the second guides is arranged so as to avoid an attachment ear protruding from each corner of the CRT.
T protective sheet sticking device. 11. The arranging means includes: a pull-out means for pulling out the protective sheet from a protective sheet roll around which the protective sheet is wound; and a time point at which the protective sheet disposed on a panel surface of a CRT is held by the first guide means. 6. The CRT according to claim 5, further comprising a separating unit that cuts and separates the protective sheet from the protective sheet roll.
Protective sheet pasting device. 12. The CR according to claim 11, wherein the adhesive sheet is provided on both side edges of the protective sheet in a direction orthogonal to a winding direction of the protective sheet roll.
T protective sheet sticking device. 13. The arrangement means for pulling out a protective sheet in a short side direction on a panel surface of a CRT, wherein the first guide means makes the adhesive portion of the protective sheet CR.
13. The CRT protective sheet sticking apparatus according to claim 12, wherein the sticker is attached to both sides of the panel surface of T in the short side direction. 14. A panel surface of the CRT has a curvature in a long side direction thereof, and each first guide body of the first guide means is formed in a roller shape along a short side direction of the panel surface. The method according to claim 13, wherein the adhesive is attached to both sides of the panel surface of the CRT in the short side direction by moving along the curvature in the long side direction of the panel surface. CRT protection sheet sticking device. 15. The apparatus according to claim 5, wherein the protective sheet has a non-adhesive part further outside the adhesive part.