JP2019085201A - Peeling device - Google Patents

Abstract

To provide a peeling device allowing a protection sheet to be peeled without contact the protection sheet to a tilted surface even when consumption of an adhesive sheet is reduced.SOLUTION: A peeling device is provided with an adhesive sheet, a supporting member, a delivery part, a recovering part, and a moving member. The adhesive sheet comprises a first and a second end part. An upper end of the supporting member, on which the adhesive sheet is held in a state that an adhesive layer on the adhesive sheet faces upward, moves between the first position and the second position lower than the first position. The delivery part supports a first end and delivers adhesive tape. The recovery part supports a second end and recovers the adhesive tape. The upper end contacts an end of a protection sheet through the adhesive sheet when being positioned at the first position. The moving member relatively moves along a lower surface of a sheet body, relatively passing between the sheet body and the upper end when the upper end is positioned at the second position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a peeling apparatus, and more particularly to a peeling apparatus for peeling a protective sheet from a sheet laminate including a sheet body and a protective sheet attached to at least one surface of the sheet body.

  Unexamined-Japanese-Patent No. 2017-109766 (patent document 1) discloses the sticking apparatus which sticks sheets, such as a polarizing plate, to board | substrates, such as a liquid crystal panel. According to this device, air bubbles can be prevented from being mixed between the substrate and the sheet when the sheet is attached.

JP, 2017-109766, A

  A protective sheet is attached to one side or both sides of a sheet such as a polarizing plate. When a sheet such as a polarizing plate is attached to a substrate such as a liquid crystal panel (Patent Document 1) or a sheet-like OLED (Organic Light Emitting Diode), the protective sheet on the affixing surface is peeled off in advance. Next, an example of the method of peeling the protective sheet will be described.

  FIG. 10 is a figure for demonstrating an example of the method of peeling a protective sheet from a polarizing sheet (polarizing plate). As shown in FIG. 10, in the peeling device 300, the adhesive sheet 315 is fed by the feed roll 310 and taken up by the take-up roll 320. Above the peeling apparatus 300, the sticking apparatus 200 holding the polarizing sheet 105 with which the protective sheet 110 was stuck on both surfaces is arrange | positioned. As the sticking device 200 descends, a part of the protective sheet 110 adheres to the adhesive sheet 315. Thereafter, the protective sheet 110 is peeled off from the polarizing sheet 105 by raising the sticking device 200. Then, the pressure-sensitive adhesive sheet 315 is fed by the feed roll 310 and the take-up roll 320, and the protective sheet 110 attached to the next polarizing sheet 105 is peeled off.

  In the peeling apparatus 300, in order to reduce the consumption of the adhesive sheet 315, the adhesion area of the protective sheet 110 and the adhesive sheet 315 is suppressed small. That is, in the peeling device 300, the feeding amount per time of the adhesive sheet 315 is suppressed small. Thus, the peeled protective sheets 110 sequentially overlap, for example, as in the protective sheets 110A and 110B shown in FIG.

  As the protective sheets 110 sequentially overlap, the upper surface of the table 305 is gradually inclined. When the inclination of the upper surface of the table 305 is large, the peeling of the protective sheet 110 may be difficult.

  The present invention has been made to solve such a problem, and the purpose thereof is to form an inclined surface (formed by a peeled protective sheet, even when the consumption of the adhesive sheet is reduced. (5) to provide a peeling device capable of peeling the protective sheet without bringing the protective sheet into contact with the protective sheet.

  The peeling apparatus according to the present invention is a peeling apparatus for peeling a protective sheet from a sheet laminate including a sheet body and a protective sheet attached to at least one surface of the sheet body. The sheet laminate is disposed above the peeling device so that the surface to which the protective sheet is attached is directed downward. The peeling device includes an adhesive sheet, a support member, a delivery unit, and a collection unit. The pressure-sensitive adhesive sheet has first and second ends, and a pressure-sensitive adhesive layer adhered to the protective sheet is formed on one side. The support member has the adhesive sheet stretched over the upper end with the adhesive layer facing upward, and the upper end moves between the first position and the second position lower than the first position. The delivery portion holds the first end and delivers the adhesive sheet. The recovery unit holds the second end and recovers the adhesive sheet. The adhesive sheet is directed from the delivery portion to the upper end, and is directed downward when the upper end is exceeded. The upper end is in contact with the end of the protective sheet through the adhesive sheet when the upper end is disposed in the first position. The peeling device further comprises a moving member. When the upper end is disposed at the second position, the moving member relatively passes between the sheet main body and the upper end and relatively moves along the lower surface of the sheet main body.

  In this peeling apparatus, the upper end of the support member is in contact with the end of the protective sheet in the first position, the adhesive sheet is directed upward until reaching the upper end of the support member and beyond the upper end of the support member beyond the upper end Head downwards. Therefore, the protective sheet peeled from the sheet laminate and adhered to the adhesive sheet is disposed below the upper end of the support member (for example, even if a table directed to the sheet laminate is provided) The peeled protective sheet does not overlap the table, ie it can be kept flat on the table). The peeled protective sheet disposed below the upper end of the support member does not contact the sheet laminate even if the upper end of the support member moves to the first position. Further, since the upper end of the support member is in contact with the end of the protective sheet and not in contact with the entire surface, the consumption amount of the adhesive sheet is reduced. Therefore, according to this peeling apparatus, even when the consumption amount of the adhesive sheet is reduced, the protective sheet is peeled from the sheet laminate without bringing the protective sheet before peeling into contact with the protective sheet before peeling. Can.

  Preferably, in the peeling apparatus, the moving member is a rod-like member extending in a direction parallel to the width direction of the pressure-sensitive adhesive sheet.

  According to this peeling apparatus, the moving member extends in a direction parallel to the width direction of the adhesive sheet and contacts the protective sheet in the middle of peeling in a wide range, so the protective sheet can be easily peeled from the sheet laminate. .

  Preferably, the peeling apparatus further includes a first drive unit and a second drive unit. The first driving unit drives the support member to move to the second position after the upper end moves to the first position. The second drive unit drives the moving member to move relatively along the lower surface of the sheet main body after the upper end moves to the second position.

  In this peeling device, the upper end of the support member is moved to the first position and then moved to the second position, and then the moving member is moved along the lower surface of the sheet body. The adhesive sheet adheres to the protective sheet by moving the upper end of the support member to the first position. By moving the upper end of the support member to the second position, the moving member can move between the upper end of the support member and the sheet main body while the adhesive sheet is adhered to the protective sheet. Thereafter, the moving member moves along the lower surface of the sheet main body, whereby the moving member pushes the protective sheet together with the adhesive sheet in the moving direction to peel the protective sheet from the sheet laminate. Therefore, according to this peeling apparatus, the protective sheet can be peeled from the sheet laminate.

  Preferably, the peeling apparatus further includes a first restricting portion and a second restricting portion. The first regulation portion regulates the delivery of the adhesive sheet by the delivery portion. The second control unit regulates the recovery of the adhesive sheet by the recovery unit.

  According to this peeling device, the adhesive sheet can be made to move as desired by appropriately regulating the feeding and recovery of the adhesive sheet.

  More preferably, the peeling apparatus further includes a driven roller. The driven roller has a pressure-sensitive adhesive sheet stretched downward between the upper end of the support member and the collection portion. The driven roller moves from the third position to a fourth position below the third position by gravity.

  More preferably, in the peeling apparatus, the first restricting part releases the restriction in a state where the restriction by the second restricting part is maintained, and the upper end of the support member moves from the second position to the first position, The adhesive sheet is delivered from the delivery portion.

  In this peeling apparatus, for example, when the recovery of the adhesive sheet by the recovery unit is regulated and the delivery of the adhesive sheet by the delivery roll is not regulated, the upper end of the support member moves from the second position to the first position By doing this, the pressure-sensitive adhesive sheet is fed out by an appropriate length. Therefore, according to this peeling apparatus, the pressure-sensitive adhesive sheet is appropriately moved only by moving the support member (without adding tension more than necessary to the pressure-sensitive adhesive sheet) on condition that the regulation of the delivery portion and the recovery portion is appropriately performed. The length can be extended. Therefore, according to this peeling apparatus, the motor etc. for driving a delivery part can be abbreviate | omitted.

  More preferably, the peeling apparatus further includes a third drive unit. The third driving unit drives the recovery unit to recover the adhesive sheet in a state where the driven roller is disposed at the fourth position and the regulation by the first regulating unit is maintained, and the driven roller is Move from position 4 to position 3

  In this peeling apparatus, the adhesive sheet applies a force to the driven roller from below from above by the recovery unit recovering the adhesive sheet. As a result, the driven roller moves from the fourth position to the third position. Therefore, according to this peeling apparatus, the driven roller can be returned to the third position only by collecting the adhesive sheet by the collection unit. In addition, since a drive source such as a motor for driving the recovery unit is used merely to return the driven roller to the third position, it does not have to be a high performance motor etc. For example, a DC motor etc. It can be realized by an inexpensive motor.

  According to the present invention, even when the consumption amount of the adhesive sheet is reduced, the protective sheet can be peeled without bringing the protective sheet into contact with the inclined surface (tilt formed by the peeled protective sheet). A peeling device can be provided.

It is a schematic block diagram of a peeling apparatus. It is a schematic block diagram at the time of seeing the peeling apparatus shown by FIG. 1 from the arrow L direction. It is a schematic diagram of the cross section of a polarizing sheet laminated body. It is a flowchart which shows operation | movement of a peeling apparatus. It is a figure for demonstrating the operation | movement of FIG.4 S105. It is a figure for demonstrating the operation | movement of FIG.4 S115. It is a figure which shows the 1st state in operation | movement of FIG.4 S120. It is a figure which shows the 2nd state in operation | movement of FIG.4 S120. It is a figure which shows the 3rd state in operation | movement of FIG.4 S120. It is a figure for demonstrating the operation | movement of FIG.4 S125. It is a figure for demonstrating the operation | movement of FIG.4 S135. It is a figure for demonstrating an example of the method of peeling a protective sheet from a polarizing plate.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference characters and description thereof will not be repeated.

<1. Configuration of peeling device>
FIG. 1 is a schematic block diagram of a peeling apparatus 10 according to the present embodiment. FIG. 2 is a schematic block diagram of the peeling apparatus 10 shown in FIG. 1 as viewed from the direction of arrow L. As shown in FIG. In addition, in FIG. 2, a part of member is abbreviate | omitted compared with FIG. 1 for easy understanding.

  As shown in FIGS. 1 and 2, a sticking device 200 is disposed above the peeling device 10 (in the direction of the arrow U). The sticking device 200 is a device for sticking a sheet such as a polarizing sheet on a substrate such as a liquid crystal panel or a sheet-like OLED. The sticking device 200 holds the polarizing sheet laminate 100, for example, by suction. The peeling apparatus 10 peels the protective sheet arrange | positioned on the lower surface of the polarizing sheet laminated body 100 in the state by which the polarizing sheet laminated body 100 was hold | maintained by the sticking apparatus 200, for example.

  FIG. 3 is a schematic view of a cross section of the polarizing sheet laminate 100. As shown in FIG. As shown in FIG. 3, the polarizing sheet laminate 100 includes a polarizing sheet 105 (sheet body) and protective sheets 110 and 115. The polarizing sheet 105 is a sheet-like polarizing plate, and is a sheet having a known polarizing function. Protective sheets 110 and 115 are attached to both sides of the polarizing sheet 105, respectively. The types and dimensions of the polarizing sheet 105 and the protective sheets 110 and 115 can be appropriately determined according to the embodiment.

  Referring again to FIGS. 1 and 2, the peeling device 10 includes the adhesive sheet 12, the delivery roll 20, the first regulation portion 22, the take-up roll 30, the third drive portion 32, and the second regulation portion. 34, a support member 40, a first drive portion 42, driven rollers 14, 16, a guide member 60, an adhesive sheet feeding unit 70, and a fixing portion 78. The peeling device 10 also includes a moving member 50, a table 52, and a second drive unit 54. Further, the peeling apparatus 10 includes a controller 80.

  The adhesive sheet 12 is a sheet in which an adhesive layer is formed on a base material. The adhesive layer adheres to the protective sheet 110. The type and dimensions of the pressure-sensitive adhesive sheet 12 can be appropriately determined according to the embodiment. In the present embodiment, two pressure-sensitive adhesive sheets 12 (12A, 12B (FIG. 2)) are used at positions separated in the arrow FB direction.

  The delivery roll 20 holds the one end (first end) of the adhesive sheet 12 and is configured to deliver the adhesive sheet 12 by rotating. That is, when the delivery roll 20 rotates, the adhesive sheet 12 is supplied downstream.

  The first restricting portion 22 is a member that restricts the delivery of the adhesive sheet 12 by the delivery roll 20. The first restricting portion 22 is configured to restrict, for example, the rotation of the delivery roll 20. The first restricting portion 22 is realized by, for example, a back tension and a torque limiter mechanism.

  The winding roll 30 is configured to hold the other end (second end) of the pressure-sensitive adhesive sheet 12 and to wind the pressure-sensitive adhesive sheet 12 by rotating.

  The third drive unit 32 is configured to rotate the take-up roll 30. The third drive unit 32 is realized by, for example, a motor such as a DC motor.

  The second restricting portion 34 is a member that restricts the winding of the adhesive sheet 12 by the winding roll 30. The second restricting portion 34 is configured to restrict, for example, the rotation of the take-up roll 30. The second restricting portion 34 is realized by, for example, a drive mechanism included in a DC motor or the like.

  The support member 40 is, for example, a plate-like member, and is configured to slide in the vertical direction (the direction of the arrow UD) with respect to the housing 11 (FIG. 2). For example, the upper end 41 of the support member 40 is slidable between a first position 45 and a second position 46 (FIG. 2). The adhesive sheet 12 is stretched over the upper end 41 of the support member 40 with the adhesive layer facing upward.

  For example, the width in the arrow LR direction of the support member 40 is narrower than the width in the arrow LR direction (the direction in which the adhesive sheet 12 extends) of the polarizing sheet laminate 100. That is, the contact area between the adhesive sheet 12 and the protective sheet 110 when the support member 40 is disposed at the first position 45 is smaller than the area of the protective sheet 110. Therefore, in the peeling apparatus 10, compared with the peeling method which makes the adhesive sheet 12 contact the whole surface of the protective sheet 110, the consumption of the adhesive sheet 12 is small. Also, for example, the width in the arrow BF direction (the width direction of the adhesive sheet 12) of the support member 40 is wider than the width in the arrow BF direction of the polarizing sheet laminate 100. Therefore, in the peeling apparatus 10, the adhesive sheet 12 adheres to the appropriate position among the whole edge parts of the protective sheet 110 (FIG. 3).

  The first drive unit 42 is configured to move the support member 40 in the vertical direction. The first drive unit 42 is realized by, for example, an air cylinder.

  The driven roller 14 is a roller provided between the delivery roll 20 and the support member 40, and is disposed substantially directly below the support member 40. The driven roller 16 is a roller provided between a driven roller 74 (described later) and the winding roller 30. The driven roller 16 is disposed substantially right of the driven roller 74 (arrow R direction) and generally right of the take-up roll 30 (arrow L direction).

  The guide member 60 is a guide for guiding the adhesive sheet 12 and the protective sheet 110 (FIG. 3) adhered on the adhesive sheet 12 to the driven roller 74. The guide member 60 is disposed substantially directly above the adhesive sheet feeding unit 70. The guide member 60 is shaped so as to be separated from the adhesive sheet 12 as it goes upward.

  The adhesive sheet feeding unit 70 is a unit that causes the delivery roll 20 to feed the adhesive sheet 12. The adhesive sheet feeding unit 70 includes a driven roller holding unit 72 for holding the driven roller 74, and a shaft 76. The driven roller holding unit 72 is movable in the vertical direction (the direction of the arrow UD) along the shaft 76. That is, the driven roller 74 can move between the third position 77 and the fourth position 79 below the third position 77. When the driven roller 74 moves from the third position 77 to the fourth position 79 in a state in which the delivery of the adhesive sheet 12 by the delivery roll 20 is not regulated by the first regulating portion 22, the adhesive sheet 12 with an appropriate length is delivered. The roll 20 is unrolled.

  The fixing portion 78 is a member for fixing the driven roller holding unit 72 at the third position 77. Fixing portion 78 is realized, for example, by an air cylinder. When the fixing by the fixing portion 78 is released, the driven roller holding unit 72 can move up and down.

  The moving member 50 is a bar-like member extending in a direction (arrow FB direction) parallel to the width direction of the adhesive sheet 12. A rail 56 (FIG. 2) extending in the direction of the arrow LR is disposed on the housing 11. Both ends of the moving member 50 are slidably attached to the rail 56, and the moving member 50 is movable along the rail 56 in the arrow LR direction. The moving member 50 is disposed on the left side of the support member 40 at the leftmost position (arrow L side) of the movable range. The moving member 50 may be disposed to the right of the right end of the polarizing sheet laminate 100 at the rightmost position (arrow R side) of the movable range, but the protective sheet 110 can be peeled off. As long as it is, it may not necessarily be movable to such a position.

  The table 52 is configured such that the upper surface is horizontal. The table 52 is movable together with the movable member 50 in the direction of the arrow LR. The table 52 is disposed at a position facing the protective sheet 110 (lower protective sheet) of the polarizing sheet laminate 100.

  The second drive unit 54 is configured to move the moving member 50 and the table 52 in the arrow LR direction. The second drive unit 54 is realized by, for example, a motor such as a servomotor.

  The controller 80 is configured to control the entire stripping apparatus 10. The controller 80 includes a central processing unit (CPU) and an internal memory (not shown), and the first drive unit 42 and the second drive unit based on information stored in the internal memory, signals from each sensor (not shown), etc. The first restricting portion 22, the third driving portion 32, the second restricting portion 34 and the fixing portion 78 are controlled.

<2. Operation of peeling device>
FIG. 4 is a flowchart showing the operation of the peeling apparatus 10. The process shown in this flowchart is executed by the controller 80 when the polarizing sheet laminate 100 is disposed at a predetermined position (position facing the table 52) above the peeling device 10. Note that whether or not the polarizing sheet laminate 100 is disposed at a predetermined position is detected by, for example, a sensor (not shown). Further, at the start of the process shown in this flowchart, the driven roller holding unit 72 is fixed at the third position 77 by the fixing portion 78, and the delivery roll 20 and the take-up roll 30 respectively have the first restricting portion 22 and It is regulated by the second regulating unit 34.

  Referring to FIG. 4, when polarizing sheet laminate 100 is arranged at a predetermined position, controller 80 controls first restricting portion 22 to release the restriction of delivery roll 20 (step S100). Thereafter, the controller 80 controls the first drive unit 42 such that the upper end 41 of the support member 40 is raised from the second position 46 to the first position 45 (FIG. 2) (step S105).

  FIG. 5 is a diagram for explaining the operation of step S105 in FIG. As shown in FIG. 5, in step S105, the upper end 41 of the support member 40 is raised. Then, the adhesive sheet 12 stretched over the upper end 41 adheres to the end of the protective sheet 110. The end of the protective sheet 110 is, for example, a range starting from one end of one side (long side) of the protective sheet 110 to a position having a length of 20% or less of the length of one side (long side). Assuming that the adhesion range between the adhesive sheet 12 and the protective sheet 110 is a range starting from one end of one side of the protective sheet 110 to a position at a length of 10% or less of the length of one side, the consumption amount of the adhesive sheet 12 is It can be further reduced. In addition, assuming that the adhesion range of the adhesive sheet 12 and the protective sheet 110 is a range from the end of one side of the protective sheet 110 to a position of 5% or less of the side length, consumption of the adhesive sheet 12 The amount can be further reduced.

  Further, as the upper end 41 is raised, the delivery roll 20 is rotated and the adhesive sheet 12 is delivered. The length between the first position 45 and the second position 46 is determined such that the length of the adhesive sheet 12 fed out in step S105 is the length necessary for peeling off the protective sheet 110. That is, in the peeling device 10, the adhesive sheet 12 is fed out without driving the delivery roll 20 by a motor or the like.

  The protective sheets 110C and 110D are protective sheets that have been peeled off. In the present embodiment, the peeled protective sheet is not disposed on the table 52 but is disposed below the upper end 41 of the support member 40 and is finally accommodated in the winding roll 30.

  Referring again to FIG. 4, when the upper end 41 of the support member 40 rises to the first position 45, the controller 80 controls the first restricting portion 22 to restrict the rotation of the delivery roll 20 (step S110). Thereafter, the controller 80 controls the first drive unit 42 so that the upper end 41 of the support member 40 is lowered from the first position 45 to the second position 46 (step S115).

  FIG. 6 is a diagram for explaining the operation of step S115 of FIG. As shown in FIG. 6, in step S115, the upper end 41 of the support member 40 is lowered. Even when the support member 40 is lowered, the rotation of the feed roll 20 and the take-up roll 30 is regulated, so that the adhesive state between the adhesive sheet 12 and the protective sheet 110 is maintained.

  Referring again to FIG. 4, when the upper end 41 of the support member 40 is lowered to the second position 46, the controller 80 controls the second drive unit 54 to move the moving member 50 and the table 52 in the arrow R direction. (Step S120).

  7A-7C are diagrams for explaining the operation of step S120 in FIG. More specifically, FIG. 7A shows a first state during operation of step S120, FIG. 7B shows a second state during operation of step S120, and FIG. 7C shows a third state during operation of step S120. Indicates the status. As time passes, transition is made in the order of the first state, the second state, and the third state.

  As shown in FIGS. 7A-7C, the moving member 50 starts to push the adhesive sheet 12 in the right direction (arrow R direction) first, and when the protective sheet 110 starts to peel off, the adhesive surface side of the protective sheet 110 is turned to the right. Start pushing. Thereafter, when the movement of the moving member 50 in the right direction is continued, the protective sheet 110 is peeled off from the polarizing sheet laminate 100.

  Referring to FIG. 4 again, during or after the movement of the moving member 50, the controller 80 controls the fixing portion 78 to release the fixation of the driven roller holding unit 72 (step S125). For example, as shown in FIG. 7C, the controller 80 executes the process of step S125 immediately before the peeling of the protective sheet 110 is completed.

  FIG. 8 is a diagram for explaining the operation of step S125 of FIG. As shown in FIG. 8, when the fixation of the driven roller holding unit 72 is released, the pressure sensitive adhesive sheet 12 is partially slackened, so the driven roller holding unit 72 descends due to gravity. The protective sheets 110 </ b> C and 110 </ b> D which have already been peeled off are guided by the guide member 60 to the driven roller 74. Then, the newly peeled protective sheet 110 overlaps the top of the already peeled protective sheets 110C and 110D. Similar to the protective sheets 110C and 110D, the newly peeled protective sheet 110 is also disposed below the upper end 41 of the support member 40.

  As the driven roller holding unit 72 descends, the driven roller 74 moves from the third position 77 to the fourth position 79 (FIG. 1).

  Referring again to FIG. 4, when the driven roller holding unit 72 is lowered to the fourth position 79, the controller 80 controls the second restricting portion 34 to release the restriction of the winding roll 30, and the winding roll The third drive unit 32 is controlled to rotate 30 (step S135).

  FIG. 9 is a diagram for explaining the operation of step S135 of FIG. As shown in FIG. 9, when winding by the winding roller 30 is performed in a state in which the feeding roller 20 is regulated, the adhesive sheet 12 applies a force to the driven roller 74 from below to hold the driven roller. The unit 72 rises.

  In step S135, the winding of the adhesive sheet 12 by the winding roll 30 is continued until the driven roller holding unit 72 reaches the third position 77 (FIG. 1). More specifically, the position of the driven roller holding unit 72 is detected by a sensor (not shown). When a sensor (not shown) detects that the driven roller holding unit 72 has reached the third position 77, the controller 80 controls the third drive unit 32 to stop the rotation of the take-up roll 30. As a result, the driven roller holding unit 72 stops at the third position 77.

  Referring back to FIG. 4, when the driven roller holding unit 72 is raised to the third position 77, the controller 80 controls the fixing portion 78 to fix the driven roller holding unit 72 at the third position 77. Then, the controller 80 controls the second restricting portion 34 so as to restrict the rotation of the take-up roll 30 (step S140). After the above processing, the state of the peeling apparatus 10 returns to the state before the start of the flowchart shown in FIG.

<3. Feature>
As described above, the peeling device 10 according to the present embodiment is a peeling device that peels the protective sheet 110 from the polarizing sheet laminate 100. The polarizing sheet laminate 100 is disposed above the peeling device 10 so that the surface to which the protective sheet 110 is attached faces the lower surface. The peeling device 10 includes an adhesive sheet 12, a support member 40, a delivery roll 20, and a take-up roll 30. The pressure-sensitive adhesive sheet 12 has first and second ends, and a pressure-sensitive adhesive layer adhered to the protective sheet 110 is formed on one side. In the support member 40, the adhesive sheet 12 is stretched over the upper end 41 with the adhesive layer facing upward, and the upper end 41 moves between the first position 45 and the second position 46 (FIG. 2). The delivery roll 20 holds the first end of the adhesive sheet 12 below the second position 46. The take-up roll 30 holds the second end of the adhesive sheet 12 below the second position 46. The upper end 41 of the support member 40 contacts the end of the protective sheet 110 via the adhesive sheet 12 when disposed at the first position 45. The peeling device 10 further includes the moving member 50. When the upper end 41 of the support member 40 is disposed at the second position 46, the moving member 50 passes between the polarizing sheet 105 (FIG. 3) and the upper end 41 along the lower surface of the polarizing sheet 105. Moving.

  In the peeling apparatus 10, the upper end 41 of the support member 40 contacts the end of the protective sheet 110 at the first position 45, and the delivery roll 20 and the take-up roll 30 are the first and the second adhesive sheets 12 below the second position 46. Hold the second end respectively. That is, the adhesive sheet 12 goes upward until it reaches the upper end 41 of the support member 40 from the delivery roll 20, and goes lower than the upper end 41 when the upper end 41 of the support member 40 is exceeded. Therefore, the protective sheet 110 separated from the polarizing sheet laminate 100 by adhering to the adhesive sheet 12 at the upper end 41 is disposed below the upper end 41 of the support member 40 by the adhesive sheet 12 being fed. (For example, the peeled protective sheet 110 does not overlap the table 52 facing the polarizing sheet laminate 100. That is, the table 52 can be kept flat). The peeled protective sheet 110 disposed below the upper end 41 of the support member 40 does not contact the polarizing sheet laminate 100 even if the upper end 41 of the support member 40 moves to the first position 45. Further, since the upper end 41 of the support member 40 is in contact with the end portion of the protective sheet 110 and not in contact with the entire surface, the consumption amount of the adhesive sheet 12 is reduced. Therefore, according to the peeling apparatus 10, even when the consumption amount of the adhesive sheet 12 is reduced, the protective sheet 110 before peeling is protected from the polarizing sheet laminate 100 without contacting the protective sheet 110 before peeling. The sheet 110 can be peeled off.

  Further, in the peeling device 10, the moving member 50 is a rod-like member extending in a direction parallel to the width direction of the adhesive sheet 12.

  According to the peeling device 10, the moving member 50 extends in a direction parallel to the width direction of the adhesive sheet 12, and the moving member 50 contacts the wide range of the protective sheet 110 during peeling of the adhesive sheet 12, so the protective sheet 110 can be easily peeled off from the polarizing sheet laminate 100.

  The peeling device 10 further includes a driven roller holding unit 72 (follower roller 74). In the driven roller holding unit 72, the adhesive sheet 12 is bridged downward between the upper end 41 of the support member 40 and the take-up roll 30. The driven roller holding unit 72 moves from the third position 77 to the fourth position 79 by gravity.

  In the peeling apparatus 10, for example, in a state where the driven roller holding unit 72 is not fixed by the fixing portion 78, winding of the adhesive sheet 12 by the winding roll 30 is restricted, and the adhesive sheet 12 by the feeding roll 20 is When the driven roller holding unit 72 moves from the third position 77 to the fourth position 79 when the feeding is not restricted, the adhesive sheet 12 of an appropriate length is fed. Therefore, according to the peeling apparatus 10, the driven roller holding unit 72 is only moved from the third position 77 to the fourth position 79 according to the gravity under the condition that the feed roll 20 and the winding roll 30 are appropriately regulated. Thus, the adhesive sheet 12 can be fed out by an appropriate length. Therefore, in the peeling device 10, a motor or the like for rotating the delivery roll 20 can be omitted.

  In addition, the peeling device 10 further includes a third drive unit 32. The third drive unit 32 is configured such that the driven roller holding unit 72 is disposed at the fourth position 79 and the regulation by the first regulation unit 22 is maintained, so that the adhesive sheet 12 is wound up. Is driven to move the driven roller holding unit 72 from the fourth position 79 to the third position 77.

  In the peeling device 10, the take-up roll 30 takes up the pressure-sensitive adhesive sheet 12, whereby the pressure-sensitive adhesive sheet 12 exerts a force on the driven roller holding unit 72 from the lower side to the upper side. The force causes the driven roller holding unit 72 to move from the fourth position 79 to the third position 77. Therefore, according to the peeling device 10, the driven roller holding unit 72 can be returned to the third position 77 only by winding the adhesive sheet 12 by the winding roll 30. In addition, the third drive unit 32 does not necessarily have to be a high-performance motor or the like because it only performs such an operation, and may be, for example, an inexpensive motor such as a DC motor.

<4. Modified example>
As mentioned above, although embodiment was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. Hereinafter, modified examples will be described. However, the following modifications can be combined as appropriate.

(4-1)
In the above embodiment, the protective sheets 110 and 115 are provided on both sides of the polarizing sheet laminate 100, respectively. However, the polarizing sheet laminate 100 does not necessarily have to have a protective sheet on both sides. For example, the polarizing sheet laminate 100 may be configured to have a protective sheet on only one side. In this case, the polarizing sheet laminate 100 is disposed on the peeling device 10 so that the surface having the protective sheet faces the lower surface.

(4-2)
Moreover, in the said embodiment, the two adhesive sheets 12 were provided in the arrow BF direction (FIG. 2). However, the number of adhesive sheets 12 may not necessarily be two. For example, three or more adhesive sheets 12 may be provided in the arrow BF direction. Moreover, the adhesive sheet 12 may be one. Also, for example, the pressure-sensitive adhesive sheet 12 may be wider than the above embodiment.

(4-3)
Although the table 52 is provided in the above embodiment, the table 52 is not necessarily required. Even if the table 52 is not provided, the protective sheet 110 can be peeled without bringing the peeled protective sheet 110 into contact with the protective sheet 110 before peeling.

(4-4)
In the above embodiment, the delivery roll 20 delivers the adhesive sheet 12 and the take-up roll 30 takes up the adhesive sheet 12. However, the main body for delivering the adhesive sheet 12 and the main body for recovering the adhesive sheet 12 are not limited to this. For example, instead of the delivery roll 20, a mechanism for delivering the folded adhesive sheet 12 may be employed. Also, for example, instead of the winding roll 30, a mechanism may be employed in which the adhesive sheet 12 is recovered by suction.

(4-5)
Further, in the above embodiment, the support member 40 and the sticking device 200 are stopped in the left-right direction (the arrow LR direction), and the moving member 50 and the table 52 are moved. However, the main body that moves in the left-right direction at the timing of peeling the adhesive sheet 12 is not limited to the moving member 50 and the table 52. For example, the moving member 50 and the table 52 may stop in the left-right direction, and the support member 40 and the sticking device 200 may move in the left-right direction. That is, at the timing of peeling the protective sheet 110, the moving member 50 may move relative to the protective sheet 110 in the left-right direction.

(4-6)
In the above embodiment, the rotation of the take-up roll 30 is restricted by the second restricting portion 34, and the position of the driven roller holding unit 72 is fixed by the fixing portion 78. However, the regulation of the winding roll 30 and the position fixing of the driven roller holding unit 72 do not necessarily have to be realized by such a configuration. For example, by providing a chuck mechanism for holding the adhesive sheet 12 at a position before entering the driven roller 74, the fixing portion 78 and the second restricting portion 34 may be substituted. In this case, when the adhesive sheet 12 is chucked by the chuck mechanism, the driven roller holding unit 72 is supported by the adhesive sheet 12 and is maintained at the third position 77. Further, when the chuck by the chuck mechanism is released, the driven roller holding unit 72 is not supported by the adhesive sheet 12 and is lowered from the third position 77 to the fourth position 79. When the chucking mechanism chucks the adhesive sheet 12, the rotation of the take-up roll 30 is restricted, and when the chucking mechanism does not chuck the adhesive sheet 12, the wind-up roll 30. Becomes rotatable.

(4-7)
Further, in the above-described embodiment, the rotation of the feed roll 20 is restricted by the first restricting portion 22. However, the regulation of the delivery roll 20 does not necessarily have to be realized by such a configuration. For example, by providing a chuck mechanism for holding the adhesive sheet 12 between the driven roller 14 and the upper end 41 of the support member 40, the first restricting portion 22 may be substituted. In this case, when the chucking mechanism chucks the adhesive sheet 12, the rotation of the delivery roll 20 is restricted, while when the chucking mechanism does not chuck the adhesive sheet 12, the unwinding roll 20 become rotatable.

  10, 300 peeling apparatus, 11 case, 12, 315 adhesive sheet, 14, 16, 74 driven roller, 20, 310 delivery roll, 22 first regulation part, 30, 320 take-up roll, 32 third drive part, 34 2nd regulation part, 40 support member, 41 upper end, 42 1st drive part, 45 1st position, 46 2nd position, 50 moving member, 52, 305 table, 54 2nd drive part, 56 rail, 60 guide member, 70 adhesive sheet feeding unit, 72 driven roller holding unit, 76 axis, 77 third position, 78 fixing portion, 79 fourth position, 80 controller, 100 polarizing sheet laminate, 105 polarizing sheet, 110, 110A, 110B, 110C, 110D, 115 protection sheet, 200 sticking device.

Claims (7)

A peeling device for peeling the protective sheet from a sheet laminate including a sheet body and a protective sheet attached to at least one surface of the sheet body,
The sheet laminate is disposed above the peeling device so that the surface to which the protective sheet is attached is directed downward.
The peeling device is
A pressure-sensitive adhesive sheet having a first and a second end, and having a pressure-sensitive adhesive layer formed on one surface to be bonded to the protective sheet,
A support member in which the adhesive sheet is stretched over the upper end with the adhesive layer facing upward, and the upper end moves between a first position and a second position lower than the first position;
A delivery portion for retaining the first end and delivering the adhesive sheet;
A recovery unit configured to retain the second end and recover the adhesive sheet;
The pressure-sensitive adhesive sheet is directed from the delivery portion toward the upper end, and is directed downward when the upper end is exceeded.
When the upper end is disposed at the first position, the upper end contacts the end portion of the protective sheet via the adhesive sheet;
The peeling device is
When the upper end is disposed at the second position, the movable member further includes a moving member relatively moving along the lower surface of the sheet main body, passing relatively between the sheet main body and the upper end. , Peeling device.   The peeling device according to claim 1, wherein the moving member is a rod-like member extending in a direction parallel to the width direction of the pressure-sensitive adhesive sheet. A first drive unit driving the support member to move to the second position after the upper end moves to the first position;
The peeling apparatus according to claim 1, further comprising: a second drive unit configured to drive the moving member so as to relatively move along the lower surface of the sheet main body after the upper end moves to the second position. . A first regulating unit that regulates the delivery of the adhesive sheet by the delivery unit;
The peeling device according to claim 1, further comprising: a second regulation unit that regulates the recovery of the pressure-sensitive adhesive sheet by the recovery unit. The driven roller further includes a driven roller below which the adhesive sheet is stretched between the upper end and the recovery unit.
The peeling apparatus according to claim 4, wherein the driven roller moves from a third position to a fourth position below the third position by gravity.   The pressure-sensitive adhesive sheet is released from the pressure-sensitive adhesive sheet by the first restriction portion releasing the restriction and the upper end moving from the second position to the first position while the restriction by the second restriction portion is maintained. The peeling device according to claim 5, wherein the peeling device is unrolled.   The recovery unit is driven to recover the adhesive sheet in a state where the driven roller is disposed at the fourth position and the regulation by the first regulating unit is maintained, and the driven roller is The peeling apparatus according to claim 6, further comprising a third drive unit configured to move from a fourth position to the third position.