Apparatus and method for removing adhesive sheet with release sheet

Abstract

To provide a peeling device capable of easily and reliably peeling a release sheet from an adhesive sheet. [Solution] An apparatus for peeling a release sheet 102 from an adhesive sheet 103 of an adhesive sheet 101 with a release sheet, comprising a peeling table 50 on which the adhesive sheet with a release sheet 101 is placed, an adsorption and transporting device 60 which adsorbs the surface of the adhesive sheet 103 and moves the adhesive sheet 103, and a clamping and transporting device 40 which clamps the protruding portion of the release sheet 102 and moves the release sheet 102, the adsorption and transporting device 60 moves the adhesive sheet 103 along the upper surface of the peeling table 50 towards a peeling edge 51, and the clamping and transporting device 40 moves the release sheet 102 so that the tip edge 102a of the clamped protruding portion is inclined relative to the peeling edge 51 and then bends the release sheet 102 at the peeling edge 51 and pulls it downward, and the adhesive sheet 103 and release sheet 102 are moved at the same speed to be peeled off.

Description

[Technical field]

[0001] The present invention relates to an apparatus and method for removing a pressure-sensitive adhesive sheet with a release sheet. [Background technology]

[0002] In various industries, including the automotive industry, it has been a common practice to stock a large number of adhesive sheets with release sheets in a stacked state in advance, and when needed, take out one sheet at a time from the top, peel the release sheet off of the adhesive sheet, and apply it to the object.

[0003] For example, Patent Document 1 discloses a peeling device that peels off a release paper attached to the underside from a sheet member. This peeling device includes a holding device that sucks and holds the sheet member in a horizontal position while facing the release paper downward, a roller device that rotates while pinching and pulling up the release paper pulled out downward through the end of the work table, and a moving device that moves the holding device horizontally on the work table. According to this peeling device, after the sheet member sucked and held by the holding device is stationary on the work table, the roller device applies a pull-up force to the release paper of the sheet member that is smaller than the horizontal holding force of the sheet member by the holding device, and the moving device moves the holding device to feed the sheet member toward the end of the work table, so that the timing of the start of the sheet member feed operation and the start of the release paper pull-up can be approximately synchronized, and the release paper can be stably peeled off. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-227358 A Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned conventional peeling device is configured so that the take-up force of the roller device can be adjusted by an adjustment means. However, not only can the adjustment be complicated, but if the adjustment is insufficient, there is a risk that folds, wrinkles, etc. will occur in the sheet material after peeling.

[0006] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide an apparatus and method for removing a pressure-sensitive adhesive sheet with a release sheet, which is capable of easily and reliably removing the release sheet from the pressure-sensitive adhesive sheet. [Means for solving the problem]

[0007] The object of the present invention is to provide an apparatus for peeling a release sheet from an adhesive sheet of an adhesive sheet with a release sheet, the adhesive sheet with a release sheet being formed in a rectangular shape and having a protruding portion at least at one end where the release sheet protrudes from the adhesive sheet, the apparatus comprising a peeling table on which the adhesive sheet with a release sheet is placed, an adsorption transport device which adsorbs the surface of the adhesive sheet to move the adhesive sheet, and a clamping transport device which clamps the protruding portion to move the release sheet, the peeling table having a peeling edge consisting of a straight edge, The suction conveying device moves the adhesive sheet along the upper surface of the peeling table toward the peeling edge, and the clamping conveying device moves the release sheet so as to fold the release sheet at the peeling edge and pull it downward from a state in which the leading edge of the clamped protruding portion is inclined relative to the peeling edge in a plan view, and by moving the adhesive sheet and the release sheet at the same speed, the release sheet is peeled off from the adhesive sheet. The suction conveying device and the clamping conveying device each include an articulated robot. This is achieved by a peeling device for a pressure-sensitive adhesive sheet with a release sheet.

[0008] In this device for peeling off an adhesive sheet with a release sheet, it is preferable that the clamping and transporting device clamps a corner of the release sheet and lowers the release sheet in a direction perpendicular to the peeling edge.

[0010] The object of the present invention is to provide a method for peeling a release sheet from an adhesive sheet of an adhesive sheet with a release sheet, the adhesive sheet with a release sheet being formed in a rectangular shape, with the release sheet having a protruding portion at least at one end portion where the release sheet protrudes from the adhesive sheet, the method comprising: a placing step of placing the adhesive sheet with a release sheet on an upper surface of a peeling table having a peeling edge consisting of a linear edge portion; The robot is equipped with a multi-joint robot to transport the a suction and transport step of suctioning a surface of the adhesive sheet and moving the adhesive sheet; A clamping and conveying device equipped with an articulated robot and a clamping and transporting step of clamping the protruding portion and moving the release sheet, wherein the suction and transporting step moves the adhesive sheet along the upper surface of the peeling table toward the peeling edge, and the clamping and transporting step moves the release sheet so as to fold the release sheet at the peeling edge and pull it downward from a state in which the leading edge of the clamped protruding portion is inclined relative to the peeling edge in a planar view, and the adhesive sheet and the release sheet are moved at the same speed, thereby peeling the release sheet from the adhesive sheet. Effect of the Invention

[0011] According to the apparatus and method for removing a pressure-sensitive adhesive sheet with a release sheet of the present invention, the release sheet can be easily and reliably removed from the pressure-sensitive adhesive sheet. [Brief description of the drawings]

[0012] [Figure 1] 1 is a plan view of a peeling device for a pressure-sensitive adhesive sheet with a release sheet according to one embodiment of the present invention. [Diagram 2] 2 is a front view of the peeling device for the pressure-sensitive adhesive sheet with a release sheet. FIG. [Diagram 3] FIG. 2 is an enlarged view of a main part of FIG. [Figure 4] FIG. 3 is an enlarged view of a main part of FIG. 2. [Diagram 5] 3 is an enlarged plan view of a main portion showing a state in which the peeling device for the pressure-sensitive adhesive sheet with a release sheet is in operation. FIG. [Figure 6] FIG. 6 is a front view of FIG. 5. [Figure 7]4 is an enlarged plan view of a main portion showing another state during operation of the peeling device for the pressure-sensitive adhesive sheet with a release sheet. FIG. [Figure 8] FIG. 8 is a front view of FIG. [Figure 9] 10 is an enlarged plan view of a main portion showing still another state during operation of the peeling device for the pressure-sensitive adhesive sheet with a release sheet. FIG. [Figure 10] FIG. 10 is a front view of FIG. [Figure 11] 10 is a plan view showing still another state during operation of the peeling device for the pressure-sensitive adhesive sheet with a release sheet. FIG. [Figure 12] FIG. 12 is an enlarged view of a main part of FIG. [Figure 13] 10 is an enlarged plan view of a main portion showing still another state during operation of the peeling device for the pressure-sensitive adhesive sheet with a release sheet. FIG. [Figure 14] 14 is a side view of the direction of the arrow A in FIG. 13. [Figure 15] 2 is a plan view showing a schematic diagram of a main part of the operation of the peeling device for the pressure-sensitive adhesive sheet with a release sheet. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a plan view of a peeling device for a pressure-sensitive adhesive sheet with a release sheet (hereinafter simply referred to as "peeling device") according to one embodiment of the present invention. Fig. 2 is a front view of the peeling device shown in Fig. 1. As shown in Figs. 1 and 2, the peeling device 1 comprises a holding device 10, an adsorption device 20, a pressing device 30, a clamping and conveying device 40, a peeling table 50, and an adsorption and conveying device 60, the operation of which is controlled by a control device (not shown).

[0014] Fig. 3 is an enlarged view of a main part of Fig. 1, and Fig. 4 is an enlarged view of a main part of Fig. 2. As shown in Figs. 3 and 4, in the adhesive sheet 101 with release sheet, a rectangular adhesive sheet 103 is removably attached to the upper surface side of a rectangular release sheet 102. The adhesive sheet 103 is made of a butyl-based or epoxy-based thermosetting resin or the like, similar to the sheet material disclosed in the above-mentioned Patent Document 1, and is disposed in the center of the release sheet 102 in the left-right direction so that the release sheet 102 protrudes from both ends in the left-right direction in Fig. 3. The width of the adhesive sheet 103 (the vertical length in Fig. 3) is approximately the same as the width of the release sheet 102 (the vertical length in Fig. 3).

[0015] A plurality of release-sheet-attached adhesive sheets 101 are placed in a stacked state on the mounting surface, which is the upper surface of the mounting table 2, to form a laminate of release-sheet-attached adhesive sheets (hereinafter simply referred to as a "laminate") 100. Both widthwise sides of the laminate 100 are held by a pair of guide members 3 and 4.

[0016] The holding device 10 includes a holding member 11 formed in an inverted L-shape as viewed from the front as shown in Fig. 4, and an air cylinder 12 supporting the holding member 11 so that it can move up and down. The lower surface of the horizontal part of the holding member 11 abuts against the top surface of the stack 100, thereby holding one end of the stack 100 (the right side in Fig. 4). The height of the holding member 11 is adjusted according to the thickness of the stack 100 by the operation of the air cylinder 12 based on detection of the top surface of the stack 100 by a height sensor (not shown). The holding member 11 may be configured to hold one end of the stack 100 by its own weight.

[0017] The suction device 20 is equipped with a suction member 21 capable of suctioning the uppermost surface of the laminate 100. The suction member 21 is equipped with a plurality of suction sections 22 consisting of vacuum suction pads, and an air cylinder 23 that supports the suction sections 22 so that they can move up and down. A plurality of suction sections 22 (four in this embodiment) are arranged along the width direction of the adhesive sheet 101 with a release sheet so that the entire width direction of the adhesive sheet 101 with a release sheet can be sucked. The suction member 21 is attached to the tip of a rod of the air cylinder 24, and is supported so as to be movable forward and backward in an oblique direction.

[0018] The pressing device 30 includes a pressing member 31 supported by a plurality of linear actuators so as to be movable in the up-down and left-right directions in Fig. 4. The pressing member 31 is formed in an upside-down L-shape when viewed from the front as shown in Fig. 4, and is advanced from the other end of the release-sheet-attached adhesive sheet 101 to one end (from the left to the right in Fig. 4) and is lowered based on detection of the laminate 100 by a height sensor (not shown), so that the lower surface of the horizontal part of the pressing member 31 presses the laminate 100 downward.

[0019] The clamping and conveying device 40 includes an articulated robot 43 and a pair of clamping units 41, 42 provided on an end effector 43a of the articulated robot 43, and the lower clamping unit 42 is supported by the end effector 43a via a support unit 44. A linear actuator 45 is attached to the support unit 44 for vertically moving the upper clamping unit 41 relative to the lower clamping unit 42. The articulated robot 43 has a multi-axis (e.g., 4-axis to 7-axis) structure in which a plurality of arms are rotatably connected via joints, and the end effector is detachably attached to a rotation mechanism unit at the tip of the arm. The pair of clamping units 41, 42 clamp the protruding portion of the release sheet 102 protruding from the adhesive sheet 103 at the other end side of the release sheet-attached adhesive sheet 101, and conveys the release sheet-attached adhesive sheet 101 by the operation of the articulated robot 43. The upper clamping portion 41 has a notch 32 formed at a position where it interferes with the suction portion 22 so that the adsorption member 21 can clamp the other end of the adhesive sheet 101 with a release sheet while adsorbing it.

[0020] As shown in Figures 1 and 2, the peeling table 50 has an upper surface on which the adhesive sheet with release sheet 101 transported by the clamping and transporting device 40 is placed, which is formed in a rectangular shape when viewed from above, and has a peeling edge 51 consisting of a straight upper surface edge portion at the tip side in the transport direction.

[0021] The suction transport device 60 includes an articulated robot 61 and an adsorption member 62 provided on an end effector 61a of the articulated robot 61. The adsorption member 62 includes a plurality of suction sections 62a (five in this embodiment) made of vacuum suction pads, and adsorbs the adhesive sheet 103 of the release sheet-attached adhesive sheet 101. The articulated robot 61 has a multi-axis structure, similar to the articulated robot 43 of the clamping transport device 40.

[0022] Next, a method for peeling the release sheet 102 from the adhesive sheet 103 of the adhesive sheet with a release sheet 101 using the peeling device 1 having the above-mentioned configuration will be described. First, as shown in Figures 3 and 4, a holding step is performed in which the laminate 100 is placed on the mounting surface of the mounting table 2 and one end of the laminate 100 is held by the holding member 11.

[0023] 5 and 6, the air cylinder 24 is operated to advance the rod 24a, the adsorption member 21 is moved to directly above the other end of the laminate 100, and the air cylinder 23 is operated to lower the suction unit 22. As a result, the suction unit 22 comes into contact with the other end of the release sheet 102 exposed on the uppermost surface of the laminate 100.

[0024] 7 and 8, vacuum suction by suction unit 22 is started to adsorb the other end of release sheet 102, and then suction unit 22 is raised by operating air cylinder 23. This performs a suction step in which the other end of adhesive sheet 101 with release sheet at the top of laminate 100 is pulled up by suction member 21.

[0025] Thereafter, as shown in Fig. 8, the clamping and conveying device 40 is operated to clamp the entire width of the other end of the adhesive sheet with release sheet 101 that has been pulled up between the pair of clamping parts 41, 42. The linear actuators 32, 33 of the pressing device 30 are operated to advance and lower the pressing member 31 toward the right side in Fig. 8, thereby performing a pressing step in which the pressing member 31 presses the other end of the laminate 100 from above below the adhesive sheet with release sheet 101 whose other end has been pulled up. In this embodiment, the pressing step is performed after the other end of the adhesive sheet with release sheet 101 is clamped between the pair of clamping parts 41, 42, but the pressing step may be performed simultaneously with the clamping by the pair of clamping parts 41, 42 or before the clamping by the pair of clamping parts 41, 42.

[0026] 9 and 10, the adsorption of the adhesive sheet 101 with the release sheet by the adsorption member 21 is released, and the adsorption member 21 is retreated to its original position by the operation of the air cylinder 24, and then the clamping and conveying device 40 is operated to convey the clamped adhesive sheet 101 with the release sheet toward the peeling table 50. This performs a clamping and conveying step in which one end of the adhesive sheet 101 with the release sheet clamped between the pair of clamping parts 41, 42 is pulled out from the holding member 11. The pressing member 31 retreats to its original position in preparation for removal of the next adhesive sheet 101 with the release sheet.

[0027] The peeling device 1 of this embodiment is equipped with a holding device 10, an adsorption device 20 and a pressing device 30 so as to reliably remove the adhesive sheet 101 with a release sheet from the laminate 100, but it is also possible to remove the adhesive sheets 101 with release sheets one by one from the laminate 100 using only the clamping and conveying device 40, in which case the configuration may not be equipped with the holding device 10, the adsorption device 20 and the pressing device 30.

[0028] 11 and the enlarged view of the main part in Fig. 12, a placing step is performed in which the adhesive sheet 101 with a release sheet transported to the peeling table 50 by the clamping and transporting device 40 is placed on the upper surface of the peeling table 50 so as to be inclined relative to the peeling table 50. The adhesive sheet 101 with a release sheet placed on the peeling table 50 is positioned so that the leading edge 102a of the protruding portion of the release sheet 102 protrudes from the peeling edge 51 of the peeling table 50.

[0029] Thereafter, the pair of clamping units 41, 42 temporarily release the clamping of the release sheet 102, and then clamp the leading edge corner of the release sheet 102 that is farther from the peeled edge (i.e., the leading edge corner on the clamping and conveying device 40 side). Also, the suction member 62 of the suction conveying device 60 adsorbs the adhesive sheet 103 of the release sheet-attached adhesive sheet 101. Then, the suction conveying device 60 performs an suction conveying step of adsorbing the surface of the adhesive sheet 103 and moving the adhesive sheet 103, and the clamping and conveying device 40 performs a clamping and conveying step of clamping the protruding portion of the release sheet 102 and moving the release sheet 102. The suction conveying device 60 releases the suction at the destination of the adhesive sheet 103.

[0030] The above-mentioned adsorbing and conveying step is performed by moving the adhesive sheet 103 along the upper surface of the peeling table 50 toward the peeling edge 51, and the adsorbing member 62 is gradually raised while being tilted from about the time when the tip of the adsorbing member 62 passes the peeling edge 51. The moving direction of the adhesive sheet 103 is along a plane perpendicular to the peeling edge 51.

[0031] Meanwhile, the above-mentioned clamping and conveying step is performed by folding the release sheet 102 at the peeling edge 51 and moving it downward from a state in which the leading edge 102a of the release sheet 102 clamped by the pair of clamping parts 41, 42 is inclined in a plan view relative to the peeling edge 51. The direction of movement of the release sheet 102 is also along a plane perpendicular to the peeling edge 51, and is vertically downward relative to the horizontal peeling edge 51. As a result, the release sheet 102 is gradually peeled off from the adhesive sheet 103, as shown in Figures 13 and 14. Note that Figure 14 is a side view in the direction of the arrow A in Figure 13.

[0032] As shown in the schematic plan view of Fig. 15(a), the peeling area P (hatched) is formed in a triangular shape from the corner of the adhesive sheet 103 by folding the release sheet 102 at the peeling edge 51. Then, by moving the adhesive sheet 103 and the release sheet 102 at the same speed, the contact length between the peeling edge 51 and the release sheet 102 gradually increases, and the triangular peeling area P expands, as shown in Fig. 15(b). This allows the release sheet 102 to be peeled off from the adhesive sheet 103 easily and reliably.

[0033] In the plan view shown in FIG. 12, the angle α between the tip edge 102a of the release sheet 102 and the release edge 51 is preferably 20 to 30 degrees so that the release sheet 102 starts to peel off reliably from the corner of the adhesive sheet 103 and is peeled off smoothly to the end of the adhesive sheet 103. [Explanation of symbols]

[0034] 1. Adhesive sheet peeling device 40 Clamping and conveying device 41,42 Clamping part 43 Articulated Robot 50 Peeling table 51 Peeling edge 60 Adsorption and transport device 61 Articulated Robot 62 Adsorption member 100 Laminate of adhesive sheet with release sheet 101 Adhesive sheet with release sheet 102 Release sheet 103 Adhesive Sheet

Claims

1. An apparatus for peeling a release sheet from an adhesive sheet of an adhesive sheet with a release sheet, comprising: The adhesive sheet with a release sheet is formed in a rectangular shape and has a protruding portion at at least one end where the release sheet protrudes from the adhesive sheet, a release table on which the pressure-sensitive adhesive sheet with a release sheet is placed; a suction conveying device that suctions a surface of the adhesive sheet and moves the adhesive sheet; a clamping and conveying device that clamps the protruding portion and moves the release sheet, The peeling table has a peeling edge that is a straight edge, the suction and transport device moves the adhesive sheet along an upper surface of the peeling table toward the peeling edge, the nipping and conveying device moves the release sheet so as to fold the release edge and pull it downward from a state in which the leading edge of the nipped protruding portion is inclined with respect to the peeling edge in a plan view, The release sheet is peeled off from the adhesive sheet by moving the adhesive sheet and the release sheet at the same speed; The suction transport device and the clamp transport device are both equipped with an articulated robot, and are used in the peeling device for peeling off an adhesive sheet with a release sheet.

2. 2. The apparatus for peeling off an adhesive sheet with a release sheet according to claim 1, wherein the clamping and conveying device clamps a corner of the release sheet and lowers the release sheet in a direction perpendicular to the peeling edge.

3. A method for peeling a release sheet from an adhesive sheet of an adhesive sheet with a release sheet, comprising the steps of: The adhesive sheet with a release sheet is formed in a rectangular shape and has a protruding portion at at least one end where the release sheet protrudes from the adhesive sheet, a step of placing the pressure-sensitive adhesive sheet with a release sheet on an upper surface of a peeling table having a peeling edge formed of a linear edge portion; a suction and conveyance step of suctioning the surface of the adhesive sheet by a suction and conveyance device having an articulated robot and moving the adhesive sheet; a nipping and conveying step of nipping the protruding portion and moving the release sheet by a nipping and conveying device having an articulated robot, The adsorbing and conveying step comprises moving the adhesive sheet along an upper surface of the peeling table toward the peeling edge, The nipping and conveying step includes: moving the release sheet so as to fold the release edge at the release edge and pull it downward from a state in which the tip edge of the nipped protruding portion is inclined relative to the release edge in a plan view; A method for peeling an adhesive sheet with a release sheet, comprising the steps of: moving the adhesive sheet and the release sheet at the same speed to peel the release sheet from the adhesive sheet.

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