JP2011218770A - Protective sheet peeling device used for laminating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem with a peeling operation, wherein a motor to wind a used adhesive tape is required, which leads to an increase of a manufacturing cost of an apparatus due to enlargement of the apparatus itself, and a relatively higher electric consumption for a laminating operation.SOLUTION: The protective sheet peeling device is used for a laminating apparatus overlapping and laminating flat plate sections of flat plate members, and peels a protective sheet 40 covering a flat plate member 30a, by using an adhesive tape 10. By cutting part of the adhesive tape 10 already used for the peeling operation, the device discards together the adhesive tape 10 attached to the protective sheet 40 and the protective sheet 40 peeled from the flat plate member 30a.

Description

Detailed Description of the Invention

  The present invention relates to an apparatus for peeling off a protective sheet pasted on a flat plate member, which is used in a laminating apparatus for laminating and laminating flat plate portions of the flat plate member.

  Prior to manufacturing a laminate (product) by laminating a flat plate member, the protective sheet covering one flat plate member was peeled off by adhering an adhesive tape. And the adhesive tape which the said peeling operation was completed was wound up using the motor on the winding drum (for example, refer to patent documents 1 and 2), and the protective sheet was separated from the adhesive tape and discarded.

Japanese Patent Laid-Open No. 2002-331583 (FIG. 1) Japanese Patent Laying-Open No. 2005-314033 (FIG. 6)

  However, the peeling work requires a motor to wind up the used adhesive tape, and the equipment itself becomes larger, resulting in a higher manufacturing cost of the equipment and a relatively large amount of power for the bonding work. Was.

  In addition, when the peeling operation is performed manually, depending on the direction in which the protective sheet is peeled off, the bonding-side flat plate member is often lifted from the apparatus and misaligned, and in order to prevent it, It is necessary to increase the suction force of vacuum or the like. Similarly, the apparatus itself is increased in size, the manufacturing cost of the apparatus is increased, and a relatively large amount of power is consumed for the bonding operation.

  It is a protective sheet peeling apparatus that uses a pressure sensitive adhesive tape to peel off a protective sheet that covers a flat member, and is attached to the protective sheet by cutting the pressure sensitive adhesive tape that has been peeled off. In this structure, the adhesive tape and the protective sheet peeled off from the flat plate member are discarded together.

  Further, the means described in claim 2 is the protective sheet peeling apparatus, wherein the roller holding the adhesive tape and feeding out the roller with respect to the flat plate member in the vertical direction and the forward / backward horizontal direction. A pressing portion that pressurizes the adhesive tape in the plate-like member side and in the advancing direction, and the angle formed between the adhesive tape fed from the roller and the protective sheet is maintained at an acute angle. The protective sheet is peeled from the flat plate member by applying a pressing force in the forward direction to the adhesive tape by the pressing portion, and applying a tensile force in a direction opposite to the pressing force to the adhesive tape by retreating the roller. It is a structure to do.

  In the present invention, since the protective sheet that has been peeled off can be discarded together with the adhesive tape, a motor for winding the adhesive tape becomes unnecessary, and the entire apparatus can be reduced in size, reduced in cost, and saved in energy. It solves all the problems you face at once.

  The effect of the means described in claim 2 is that the pressure-sensitive adhesive tape can be peeled by applying two opposing forces to the pressure-sensitive adhesive tape, and the protective sheet that has been peeled off is discarded together with the pressure-sensitive adhesive tape. As a result, the entire apparatus can be reduced in size, reduced in cost and saved in energy, and the problems of the conventional apparatus can be solved all at once.

  The front view which attached the protective sheet peeling apparatus of this invention to the bonding apparatus   A plan view of the rotation of the rotating base to superpose the plate-like members   Schematic cross-sectional view of a flat base member rotated by rotating the rotating base   Front view of protective sheet peeling apparatus of the present invention   Side view   Partial enlarged view showing the peeling process   The front view of the peeling apparatus which shows the process further advanced from the process of FIG.   The front view of the peeling apparatus which shows the process further advanced from the process of FIG.   Partial sectional view showing the brake device of the roller   From   Schematic explanatory diagram of the second embodiment

  In FIG. 1 to FIG. 3A, two flat members 30a (for example, functional films) and 30b (for example, resin plates and glass) are fixed to the respective bases 70a and 70b with a suction force such as vacuum, By rotating one rotation base 70a around the rotation center O toward the other stationary base 70b, the flat plate members 30a and 30b are superposed, and the adhesive 30c at the overlapping portion of the flat plate members 30a and 30b is used to Is a bonding device that manufactures products such as displays.

  Adhesive material 30c is applied to the entire surface or part of one of the flat plate member 30a and the flat plate member 30b, and a protective sheet 40 is attached to protect the surface of the adhesive material 30c from dust. .

  In addition, although the bonding mechanism of the said bonding apparatus has various forms other than an above-described base rotation type, since it is an existing thing, the detailed description is abbreviate | omitted. The flat members 30a and 30b may be different or the same. In addition, as in this example, the bonding apparatus may be one in which one piece is set on each of the bases 70a and 70b and polymerized to produce one product in one step, or a plurality of pieces are set in one step at the same time. It is also possible to manufacture products. The adhesive 30c is not provided, and the protective sheet 40 can be used by adsorbing the protective sheet 40 on one surface of the flat plate member 30a by an adsorption force due to static electricity or the like.

  B is the protective sheet peeling apparatus which concerns on this invention attached to the bonding apparatus A. FIG. In addition, the said protective sheet peeling apparatus B may be integrated in the bonding apparatus A, and may be fixedly attached to the bonding apparatus A after comprising separately.

One embodiment of the protective sheet peeling apparatus B according to the present invention will be described with reference to FIGS.
First, the protective sheet peeling device B is rotated by the control device such as a vertical multi-indirect robot to the operation position and the retreat position as shown in FIG. It fixes to the bonding apparatus A so that it can. Reference numeral 20 denotes a roller that holds and feeds the adhesive tape 10, and is rotatably attached to the work arm of the apparatus B by a shaft 21 and can move in the vertical direction and the forward / backward horizontal direction with respect to the flat plate member. It is said.

  The pressure-sensitive adhesive tape 10 is coated with an adhesive material 10c on one side, and a tip portion fed out from the roller 20 is guided by two guide rollers 22 to adhere to the protective sheet 40 and peel off the protective sheet 40. .

  Reference numeral 50 denotes a pressing portion that is attached to the moving means 60 via the elastic body 51, and is a hollow that is rotatable around the shaft 52 in order to reduce resistance when the pressure-sensitive adhesive tape 10 is brought into pressure contact with the protective sheet 40. In addition to being formed in a cylindrical shape, the pressure in the direction of the shaft 52 is slightly longer than the width of the pressure-sensitive adhesive tape 10 in order to apply pressure over the entire width of the pressure-sensitive adhesive tape 10. The pressing portion 50 may be formed integrally with the elastic body 51 made of a spring, in addition to being formed in a hollow cylindrical shape rotatable around the shaft 52 as described above. It may be formed separately and fixed to the elastic body 51 so as not to rotate. In short, the shape and structure of the pressing portion 50 are essentially unrelated to the present invention.

  The pressing portion 50 press-contacts the adhesive tape 10 in the forward direction by an air cylinder C1 or the like, and is attached to the protective sheet 40 by an elastic body 51 such as a plate spring attached to the work arm of the apparatus B. A pressing force 50b is applied.

  Next, a structure in which the protective sheet 40 is peeled from the flat plate member 30a entirely will be described with reference to FIGS. 4 and 6 to 8.

  First, as shown in FIG. 4, in the initial state in which the roller 20 moves upward, the adhesive tape 10 just hangs down in the direction of the protective sheet 40 and does not contact the protective sheet 40.

  As the roller 20 moves downward, the adhesive 10c of the adhesive tape 10 contacts the protective sheet 40. At this time, the pressing portion presses the leading end portion of the adhesive tape 10 toward the protective sheet 40 with a pressing force 50b.

  Next, when the roller 20 moves horizontally in the forward direction (left direction in FIG. 4), the adhesive tape 10 is fed from the roller 20 correspondingly, and the state shown in FIG. 6 is obtained.

  Next, in the state where the feeding of the adhesive tape 10 from the roller 20 is stopped, the air cylinder C1 applies a pressing force 50a in the forward direction to the pressing portion 50 and retracts the working arm of the peeling device B. Then, a pulling force in the direction opposite to the pressing force 50a acts on the adhesive tape 10 (see FIG. 7).

  As shown in FIG. 7, the pressure-sensitive adhesive tape 10 (10L in FIG. 6) fed out from the roller 20 at a position where the pressing portion 50 applies a pressing force 50a in the forward direction to the pressure-sensitive adhesive tape 10. The angle (θ) formed with the protective sheet (40L in FIG. 6) is maintained at an acute angle, and the pressing force 50b of the pressing portion 50 toward the protective sheet 40 is in contact with peeling of the protective sheet 40. While acting with a point, the protective sheet 40 begins to peel due to the tension of the protective sheet 40 as the working arm of the peeling device B moves backward.

  As shown in FIG. 8, when the working arm of the peeling device B is further retracted, the adhesive strength (S1) of the pressure-sensitive adhesive tape 10 is stronger than the peeling force between the protective sheet 40 and the flat plate member 30a. Since the protective sheet 40 is set, the pressure-sensitive adhesive sheet 40 is almost adhered only by the adhesive strength (S1) of the adhesive tape 10 (the pressing forces 50a and 50b do not act) until the adhesive 30c of the flat plate member 30a is completely exposed. The plate 10 is peeled off from the flat plate member 30 a together with the tape 10.

  The integrated adhesive tape 10 and the protective sheet 40 are cut and discarded by a cutting means provided in the peeling device B or manually.

  In FIG. 9, 20a is an extension of the roller 20 provided for the roller braking device, and rotates integrally with the roller 20. 23 is a brake shoe made of rubber or the like, which contacts the outer periphery of the roller extension 20a by an air cylinder C2 provided on the working arm of the peeling device B, brakes the rotation of the roller 20 at a predetermined timing, and feeds the adhesive tape 10 To prevent.

  A rotary damper 24 is also provided on the working arm of the peeling device B, and the braking force of the roller 20 at a predetermined timing from the side surface of the roller extension 20a around the roller rotation shaft 21 by using a braking force generated by the viscous resistance of the oil. Brake the rotation. This rotary damper also functions as a safety device when the brake shoe 23 does not operate when the air cylinder C2 is pulled due to a power failure or the like.

  In addition, these brake devices are attached to the protective sheet peeling device B of the present invention, and are not related to the essence of the present invention and can be omitted.

Next, a series of operations of the protective sheet peeling apparatus B according to the present invention will be described.
(1) Initial state

As shown in FIG. 1, flat members 30 a (for example, functional films) and 30 b (for example, resin plates and glass) are set on the bases 70 a and 70 b of the bonding apparatus A. At this time, the working arm of the peeling device B is in the retracted position b0 shown in FIG. 2 so that the base 70a can rotate around the rotation center O toward the base 70b.
(2) The work arm of the peeling apparatus B is rotated to the operating position b1 shown in FIG. At this time, the front end portion of the adhesive tape 10 held by the roller 20 is guided by the two guide rollers 22 and hangs down in the direction of the protective sheet 40.
(3) The roller 20 is lowered in the direction of the protective sheet 40, and the adhesive tape 10 is adhered to the protective sheet 40 by the adhesive material 10 c at the tip portion of the adhesive tape 10. At this time, the pressing portion 50 is at the initial position a1, and the adhesive tape 10 is pressed against the protective sheet 40 by the elastic body 51.
(4) The roller 20 moves horizontally in the forward direction (left direction in FIG. 4), and the adhesive tape 10 is fed out. At this time, the rotary damper 24 gives a certain resistance to the rotation of the roller 20 so as to prevent the roller 20 from rotating too much, thereby preventing unnecessary feeding of the adhesive tape 10.
(5) The brake shoe 23 is pressed against the outer periphery of the extension 20a of the roller 20 by the air cylinder C2 to stop the rotation of the roller 20 and stop the feeding of the adhesive tape 10.
(6) The pressing portion 50 is moved forward by the air cylinder C1, the pressing force 50a in the forward direction is applied to the adhesive tape 10, and the roller 20 is horizontally moved (retreated) in the reverse direction. As the roller 20 moves backward, the protective sheet 40 begins to peel off.
(7) Further, as the roller 20 moves backward, the entire protective sheet 40 is peeled off from the flat plate member 30a, and the adhesive 30c of the flat plate member 30a is exposed entirely.
(8) The working arm of the peeling device B is raised in the direction opposite to the protective sheet 40, and then rotated to the retracted position b0. At this time, the protective sheet 40 peeled off from the flat plate member 30a moves integrally with the adhesive tape 10 in conjunction with the working arm of the peeling device B.
(9) When the pressure of the air cylinder C1 is released, the pressing portion 50 moves backward to the initial position a1.
(10) The brake shoe 23 is released from the outer periphery of the roller extension 20a by releasing the pressure of the air cylinder C2, and the roller 20 rotates freely so that the adhesive tape 10 can be fed out.
(11) The protective sheet 40 and the adhesive tape 10 that are integrated with each other are discarded by cutting a part of the adhesive tape 10 that has been drawn. At this time, the operation of the rotary damper 24 brakes the rotation of the roller 20 so that the tip portion of the cut adhesive tape 10 does not deviate from the initial position a1.
(12) The base 70a is rotated about the rotation center O toward the base 70b, and as shown in FIG. 3, the flat members 30a and 30b are superposed, and the adhesive 30c of the overlapping portion of the flat members 30a and 30b is used. The two are bonded together to produce products such as displays.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  The structure of the second embodiment is basically the same as that of the first embodiment. The difference is that the structure is very simplified and the moving means 60 (air cylinder C1), the pressing portion 50, and the elastic body 51 of the first embodiment are eliminated, while the pressing body is made of a plate material having a spring property. 53 is formed, and the multi-ends are provided so as to hang down to the protective sheet 40 side.

  Since the second embodiment has the above-described configuration, the adhesive tape 10 is guided by the two guide rollers 22 and 22 in the initial state of FIG. It hangs down on the sheet 40 side.

  Next, as shown in FIG. 11, when the roller 20 moves downward toward the protective sheet 40, the adhesive tape 10 comes into contact with the protective sheet 40 and starts to adhere while being guided by the pressing body 53. When the roller 20 further moves horizontally in the descending and advancing direction (left direction in the drawing), the adhesive tape 10 finishes adhering to the protective sheet 40 by a required length (see FIG. 12).

  Next, as shown in FIG. 13, when the roller 20 is moved upward and backward in the opposite direction to the protective sheet 40 and moved horizontally in the backward direction (right direction in the drawing), a peeling pulling force acts on the adhesive tape 10. The protective sheet 40 is united by the adhesive force of the adhesive tape 10, the protective sheet 40 begins to peel from the flat plate member 30a, and the roller 20 is moved horizontally and raised in the backward direction (right direction in the drawing). When moved, the protective sheet 40 is completely peeled off from the flat plate member 30a.

  Then, by rotating the work arm of the peeling device B to the retracted position b0 and cutting a part of the adhesive tape 10, the integrated protective sheet 40 and the adhesive tape 10 are discarded.

  In addition, since the said pressing body 53 is produced with the board | plate material which has a spring property, it respond | corresponds flexibly to a series of adhesion operations. If the pressing body 53 is formed integrally with the guide roller 22 as shown in the figure, it contributes to cost reduction. However, the pressing body 53 is formed separately from the guide roller 22 and fixed to a member on the working arm side of the peeling device B. May be.

A bonding apparatus B protective sheet peeling apparatus O rotation center a1 initial position a2 advance position b0 protective sheet peeling apparatus retracted position b1 protective sheet peeling apparatus operating position 10 adhesive tape 10c adhesive 20 roller 20a roller extension 21 roller rotation Shaft 22 Guide roller 23 Brake shoe 24 Rotary damper 30a Flat plate member (for example, functional film)
30b Flat member (for example, resin plate or glass)
30c Adhesive 40 Protective sheet 50 Pushing portion 50a Pushing force 50b of the pushing portion in the forward direction Pushing force 51 of the pushing portion toward the protective sheet 51 Elastic body 52 Shaft 53 Pushing body 60 Moving means 70a Base 70b Base C1 Air Cylinder C2 Air cylinder

Claims (2)

  It is a protective sheet peeling apparatus that uses a pressure sensitive adhesive tape to peel off a protective sheet covering a flat plate member, which is used for a bonding apparatus that overlaps and bonds flat plate portions of the flat plate member, and the peeling operation is completed. A protective sheet peeling apparatus characterized in that the adhesive tape adhered to the protective sheet and the protective sheet peeled off from the flat plate member are discarded together by cutting a part of the adhesive tape.   A pressing portion that holds the adhesive tape and allows the roller to be fed out to move in the vertical direction and the horizontal direction of advancement / retraction relative to the flat plate member, and presses the adhesive tape in the flat plate member side and the forward direction. Providing a pressing force in the forward direction to the pressure-sensitive adhesive tape by the pressing portion while maintaining an acute angle between the pressure-sensitive adhesive tape fed out from the roller and the protective sheet, and by moving the roller backward The protective sheet peeling apparatus according to claim 1, wherein the protective sheet is peeled from the flat plate member by applying a tensile force in a direction opposite to the pressing force to the adhesive tape.

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