JP2022084506A - Tacky adhesive sheet peeling device - Google Patents

Abstract

To provide a tacky adhesive sheet peeling device capable of reliably peeling a tacky adhesive sheet attached to a liner from the liner.SOLUTION: A tacky adhesive sheet peeling device 10 has: a peeling plate 32 configured to form a first acute angle part 32c including a transfer surface 32a transferred to a liner 42 to which a heat conductive sheet 14 is attached, and a folded surface 32b returned to a single liner 44 from which the heat conductive sheet 14 is peeled off; and a transfer plate 34 provided with a second acute angle part 34c arranged to face the first acute angle part 32c with a gap. The liner 42 can pass through the gap between the first acute angle part 32c and the second acute angle part 34c, and the heat conductive sheet 14 attached to the liner 42 is set to a width that cannot pass through. A rod 36b of a tensioner 36 presses a margin part 42a of the liner 42 to be transferred to the transfer surface 32a to apply tension in a transfer direction.SELECTED DRAWING: Figure 5

Description

The present invention relates to an adhesive sheet peeling device for peeling an adhesive sheet attached to a liner from the liner.

A heat conductive sheet may be used to dissipate heat from electronic components. The heat conductive sheet is attached to the liner, peeled off from the liner, and attached to a predetermined heat dissipation target component. Workers mainly perform the work of peeling the adhesive sheet such as a heat conductive sheet from the liner, and automation thereof is desired.

Patent Document 1 discloses an apparatus in which a liner to which an adhesive sheet is attached is transferred along a peeling means provided with an acute-angled portion, and the adhesive sheet is peeled off when the liner is folded back at the acute-angled portion.

Japanese Unexamined Patent Publication No. 2011-183062

However, since the heat conductive sheet has strong adhesiveness and is flexible, it may not be peeled off from the liner simply by folding it back at an acute angle portion as in the apparatus described in Patent Document 1.

Further, even if an attempt is made to adsorb and peel the heat conductive sheet by a suction pad using negative pressure, it is difficult to stably peel the heat conductive sheet due to its strong adhesive force.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an adhesive sheet peeling device capable of surely peeling an adhesive sheet attached to a liner from a liner.

In order to solve the above-mentioned problems and achieve the object, the pressure-sensitive adhesive sheet peeling device according to the present invention is a pressure-sensitive adhesive sheet peeling device that peels a pressure-sensitive adhesive sheet attached to a liner from the liner. A release plate configured such that a first transfer surface to which the attached liner is transferred and a folded surface to which the liner from which the adhesive sheet has been peeled off form a first acute angle portion, and the first. It has a transfer plate having corners arranged so as to face each other with a gap, and the liner can pass through the gap between the first acute angle portion and the corner portion, and is attached to the liner. The attached adhesive sheet is characterized in that the width is set so that it cannot pass through.

In such an adhesive sheet peeling device, the adhesive sheet is slightly peeled off from the liner or easily peeled off by the original fabric folding back at the first acute angle portion of the peeling plate. The liner can pass through the corners of the transfer plate with respect to the first acute angle portion, and the adhesive sheet attached to the liner is arranged so as to face each other with a width that cannot be passed. Even if it is flexible and has high adhesive strength, it can be reliably peeled off from the liner.

If the corner portion of the transfer plate forms an acute-angled second acute-angled portion, the liner can be more easily peeled off.

When the transfer plate has a transfer surface parallel to the first transfer surface, the adhesive sheet is stably transferred to the transfer surface while maintaining an angle.

When the transfer surface is arranged at a position offset from the first transfer surface by the thickness of the liner, the adhesive sheet is stably transferred to the transfer surface while maintaining its height.

If the transfer plate is made of resin or the surface of metal is coated with resin, the adhesive material of the adhesive sheet is less likely to adhere.

Having a tensioner that applies tension in the transfer direction to the liner transferred to the first transfer surface can prevent the liner from floating.

The liner has room on both sides in a direction orthogonal to the transfer direction to which the adhesive sheet is not attached, and the tensioner presses the room on both sides of the liner against the first transfer surface. It may have a pressing portion.

A suction portion for adsorbing the pressure-sensitive adhesive sheet at least partially peeled from the liner may be provided from the first acute-angled portion to the corner portion. The adhesive sheet peeled off by this suction portion can be automatically taken out from the transfer plate.

The suction portion includes a first moving means that moves in a first direction orthogonal to the transfer direction of the liner, and a second moving means that moves in a second direction orthogonal to the transfer direction of the liner and the first direction. It may be configured to be movable by. According to such a configuration, the adsorbed adhesive sheet can be conveyed to a predetermined place.

The pressure-sensitive adhesive sheet may be a heat conductive sheet.

The adhesive sheet is composed of a surface layer sheet and an adhesive material on which the surface layer sheet is provided on the front side and the back side is attached to the liner, even if the surface layer sheet is divided into small pieces by at least equidistant cuts. good. When the adhesive sheet is divided into small pieces in this way, continuous processing becomes possible.

On the transfer path of the liner to which the adhesive sheet is attached, the adhesive sheet provided on the upstream side of the sheet peeling portion where the release plate and the transfer plate face each other, and the adhesive sheet attached to the liner. The adhesive material separating portion is provided with an adhesive material separating portion for separating the material along the cut, and the adhesive material separating portion is orthogonal to the second transfer surface to which the liner to which the adhesive sheet is attached is transferred and the transfer direction of the liner. A convex portion that protrudes from the second transfer surface and abuts on the lower surface of the liner over the width of the adhesive sheet, and the liner to which the adhesive sheet is attached on the upstream side and the downstream side of the convex portion. May have a guide along the second transfer surface. This makes it possible to more reliably peel the adhesive sheets from the liner one by one at the sheet peeling portion on the downstream side.

The convex portion may be a regular hexagonal column or a square column, and may be fixed on the second transfer surface so as to be symmetrical with respect to the transfer direction of the liner and the corner portion is at the uppermost portion.

The convex portion may be a cylinder and may be fixed on the second transfer surface.

The guide may be provided at a position twice the distance between the cuts on the upstream side and the downstream side from the convex portion.

In the pressure-sensitive adhesive sheet peeling device according to the present invention, the pressure-sensitive adhesive sheet attached to the liner can be reliably peeled off from the liner.

FIG. 1 is a perspective view of a sheet pasting device including an adhesive sheet peeling device according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of a reel and the original fabric wound around the reel. FIG. 3 is a perspective view of the pressure-sensitive adhesive sheet peeling device according to the embodiment of the present invention. FIG. 4 is a partial cross-sectional perspective view of the pressure-sensitive adhesive sheet peeling device according to the embodiment of the present invention. FIG. 5 is a cross-sectional side view showing the sheet peeling portion where the peeling plate and the transfer plate face each other and the periphery thereof. FIG. 6 is a plan view showing the sheet peeling portion where the peeling plate and the transfer plate face each other and the periphery thereof. FIG. 7 is a partially enlarged side view of the heat conductive sheet. FIG. 8 is a perspective view of the adhesive material separating portion. FIG. 9 is a schematic plan view of the adhesive material separating portion. FIG. 10 is a schematic side view of the adhesive material separating portion. FIG. 11 is a schematic side view of the adhesive material separating portion according to the first modification. FIG. 12 is a schematic side view of the adhesive material separating portion according to the second modification.

Hereinafter, embodiments of the pressure-sensitive adhesive sheet peeling device according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

FIG. 1 is a perspective view of a sheet pasting device 12 including an adhesive sheet peeling device 10 according to an embodiment of the present invention. The adhesive sheet peeling device 10 and the sheet attaching device 12 are collectively controlled by a controller (not shown). First, the sheet pasting device 12 will be described.

The sheet affixing device 12 is a device for affixing a heat conductive sheet 14 as an adhesive sheet to a predetermined component on a printed circuit board 16. The heat conductive sheet 14 is, for example, a graphite sheet, which is flexible and has high adhesive strength. The sheet pasting device 12 includes a single-axis transfer robot 18 and a two-axis transfer robot 20. The uniaxial transfer robot 18 is arranged on the base plate 22 and transfers the printed circuit board 16 in the Y direction.

The first moving means 20a of the two-axis transfer robot 20 is provided at a position substantially above the single-axis transfer robot 18, and the second moving means 20b can be moved in the X direction. The X direction is orthogonal to the Y direction and is a direction along the surface of the base plate 22. The second moving means 20b has a configuration in which the stage 24 can be moved in the Z direction. The Z direction is a vertical direction, in other words, a direction orthogonal to the transfer direction of the uniaxial transfer robot 18 and the transfer direction of the first moving means 20a. The X, Y and Z directions are indicated by arrows in the drawings as appropriate.

An angle member 26 is attached to the stage 24. The angle member 26 is a substantially L-shaped member including a portion extending in the vertical direction and a bent portion 26a bent at a right angle at the lower end. A suction pad (suction portion) 28 is provided on the bent portion 26a. The suction pad 28 is a part of the adhesive sheet peeling device 10. The suction pad 28 uses negative pressure to automatically suck the heat conductive sheet 14 peeled off by the adhesive sheet peeling device 10, and transports the heat conductive sheet 14 to the printed circuit board 16 under the action of the biaxial transfer robot 20. It can be attached to a predetermined part.

Specifically, the printed circuit board 16 is set on the uniaxial transfer robot 18, and is pulled in and conveyed to the attachment position. The suction pad 28 is conveyed directly above the heat conductive sheet 14 peeled by the adhesive sheet peeling device 10 by the biaxial transfer robot 20, the stage 24 of the second moving means 20b is lowered, and the heat conductive sheet 14 is sucked. While maintaining the suction state, the stage 24 is raised to move the first moving means 20a to the heat conductive sheet pasting surface on the printed circuit board 16. The stage 24 of the second moving means 20b is lowered, the heat conductive sheet 14 is brought into contact with the printed circuit board 16, and the suction pad 28 is moved from the suction holding state to the negative pressure release state, so that the heat conduction sheet 14 is transferred to the printed circuit board 16. paste. Depending on the conditions, the operator may take out the peeled heat conductive sheet 14.

Next, the adhesive sheet peeling device 10 will be described. FIG. 2 is a schematic perspective view of a reel 38 and an original fabric 40 wound around the reel 38. FIG. 3 is a perspective view of the adhesive sheet peeling device 10. FIG. 4 is a partial cross-sectional perspective view of the adhesive sheet peeling device 10.

As shown in FIGS. 3 and 4, the adhesive sheet peeling device 10 includes a pair of plate-shaped stands 30 standing on the base plate 22, and a peeling plate 32 and a transfer plate 34 supported by these stands 30. It has a tensioner 36 provided above the release plate 32, a reel 38, a winder (not shown), and the suction pad 28. The adhesive sheet peeling device 10 is a device for peeling the heat conductive sheet 14 from the liner 42 in the raw fabric 40 described below. The pair of stands 30, the release plate 32, the transfer plate 34, and the tensioner 36 in the adhesive sheet release device 10 are integrally assembled to form the main mechanism portion 39.

As shown in FIG. 2, the original fabric 40 is wound around a reel 38, and one end thereof is unwound as an unwinding portion 40a. The reel 38 is pivotally supported by the shaft 38a. The original fabric 40 is composed of a liner 42 which is a release paper and a heat conductive sheet 14 attached to one surface of the liner 42. The sheet attached to the liner 42 is not limited to the heat conductive sheet 14, but may be another adhesive sheet. The heat conductive sheet 14 is composed of a surface layer sheet 14b (see FIG. 7) and an adhesive material 14c (see FIG. 7) in which the surface layer sheet 14b is provided on the front side and the back side is attached to the liner.

The liner 42 is wider than the heat conductive sheet 14, and a room 42a to which the heat conductive sheet 14 is not attached is secured on both sides. The heat conductive sheet 14 is divided into small pieces by equally spaced cuts 14a. The original fabric 40 may be wound around the reel 38 with a cut 14a and a margin portion 42a formed in advance, or may be attached to the entire surface of the liner 42 by a predetermined automatic cutter with respect to the unwinding portion 40a. Both sides of the heat conductive sheet 14 may be cut to form a room portion 42a, and cuts 14a may be formed at equal intervals. The length of each heat conductive sheet 14 can be adjusted by the spacing of the cuts 14a. In the following description, the individual pieces divided at equal intervals by the cut 14a are referred to as a heat conductive sheet 14.

As shown in FIG. 1, the reel 38 on which the original fabric 40 is wound is arranged slightly above the main mechanism portion 39 in the Y2 direction, and the unwinding portion 40a extends in the Y1 direction to form the main mechanism portion 39. Is set to reach. The heat conductive sheet 14 is peeled off from the original fabric 40 at the main mechanism portion 39, and the remaining single liner 42 (reference numeral 44 in FIG. 1) is folded back in the Y2 direction and wound by a winder. The original fabric 40 is unwound from the reel 38 by the winder winding a single liner 44. The unwinding operation of the original fabric 40 from the reel 38, in other words, the feeding operation to the main mechanism unit 39 may be continuous or intermittent. The main mechanism portion 39 has a sheet peeling portion 46 and an adhesive material separating portion 50. The sheet peeling portion 46 is a portion where the peeling plate 32 and the transfer plate 34 face each other. The adhesive material separating portion 50 is a portion that separates the adhesive material 14c in the heat conductive sheet 14 attached to the liner 42 along the cut 14a.

The pair of stands 30 are plate-shaped, are arranged in the X direction, stand along the Y direction, and support the release plate 32 and the transfer plate 34 in the vicinity of the upper end. The release plate 32 is provided closer to the Y2 direction, and the transfer plate 34 is provided closer to the Y1 direction. The width of the release plate 32 and the transfer plate 34 in the X direction is slightly wider than that of the original fabric 40.

The release plate 32 is a plate piece slightly long in the Y direction so that the original fabric 40 can be stably placed and transferred, and is provided at a position slightly lower than the upper end of the stand 30. The vicinity of the upper end of the stand 30 projects upward from the release plate 32 to form a regulation wall 30a, which is a passage wall for guiding the original fabric 40.

FIG. 5 is a cross-sectional side view showing the sheet peeling portion 46 in which the peeling plate 32 and the transfer plate 34 face each other and the periphery thereof. FIG. 6 is a plan view showing the sheet peeling portion 46 in which the peeling plate 32 and the transfer plate 34 face each other and the periphery thereof.

As shown in FIGS. 5 and 6, the release plate 32 has a liner 42 to which the heat conductive sheet 14 is attached, that is, a transfer surface (first transfer surface) 32a on the upper surface to which the raw fabric 40 is transferred and a heat conductive sheet. The lower folded surface 32b to which the single liner 44 from which the 14 is peeled off is returned is configured to form the first acute angle portion 32c in a side view. The first acute angle portion 32c has a convex shape in the Y1 direction. The first acute angle portion 32c is set at a sufficiently small angle so that the heat conductive sheet 14 can be easily peeled off when the original fabric 40 is folded back from the transfer surface 32a to the folded surface 32b, for example, about 10 to 30 degrees. Is.

The transfer plate 34 is configured such that the transfer surface 34a on the upper surface and the transfer surface 34b on the lower surface form the second acute-angled portion 34c in a side view. The second acute angle portion 34c has a convex shape in the Y2 direction. The transfer plate 34 is provided so that the second acute-angled portion 34c is arranged to face the first acute-angled portion 32c, and the facing portion forms the sheet peeling portion 46. The sheet peeling portion 46 is a portion where the heat conductive sheet 14 of the original fabric 40 is peeled from the liner 42. The transfer plate 34 may be configured to be finely adjustable in the Y direction and the Z direction in order to adjust the sheet peeling portion 46 according to the original fabric 40. This fine adjustment is realized by, for example, a screw / nut mechanism.

The gap width G of the sheet peeling portion 46 is set so that the liner 42 can pass through the gap width G so that the heat conductive sheet 14 can be easily peeled off, and the heat conductive sheet 14 attached to the liner 42 cannot pass through. Has been done. Specifically, the gap width G is set to be larger than the thickness W1 of the liner 42 and smaller than W1 + W2 to which the thickness W2 of the heat conductive sheet 14 is added. As a result, the original fabric 40 can pass through the liner 42 when it passes through the sheet peeling portion 46, but cannot pass through the heat conductive sheet 14 attached to the upper surface thereof, so that it is peeled off from the liner 42 and extruded in the Y1 direction. become.

The transfer surface 32a and the transfer surface 34a are provided in parallel with the base plate 22 (see FIG. 1). Further, the transfer surface 34a is arranged at a position offset above the transfer surface 32a by the thickness W1 of the liner 42. Therefore, the heat conductive sheet 14 partially peeled off from the liner 42 and extruded in the Y1 direction is stably transferred to the transfer surface 34a while maintaining the horizontal position and the height thereof. ..

Further, the second acute-angled portion 34c enters between the heat conductive sheet 14 and the liner 42 in a state of being slightly peeled off or being peeled off from the liner 42, and has an action of scooping and peeling off the heat conductive sheet 14. .. Therefore, the second acute angle portion 34c is set to a sufficiently small angle, for example, about 10 to 30 degrees. However, the corner portion corresponding to the second acute angle portion 34c is not an acute angle, and even if it is a right angle, for example, a corresponding scooping action and peeling action can be obtained.

The transfer plate 34 is made of resin or has a metal surface coated with resin, and can reduce the adhesion of the adhesive material on the back surface of the heat conductive sheet 14. If the transfer plate 34 is made of resin, it is easy to manufacture. When the transfer plate 34 is resin-coated as a metal material, the strength becomes high.

The heat conductive sheet 14 partially peeled off from the liner 42 at the sheet peeling portion 46 or almost completely peeled off is sent out to the transfer surface 34a of the transfer plate 34. The heat conductive sheet 14 fed to the transfer surface 34a is adsorbed by the suction pad 28 in conjunction with the feeding operation of the raw fabric 40, and is transported to and attached to a predetermined position on the printed circuit board 16 as described above.

The tensioner 36 applies tension in the transfer direction (Y direction) to the original fabric 40 and the liner 42 transferred on the transfer surface 32a. As shown in FIG. 4, the tensioner 36 is a pneumatic device, and the rod (pressing portion) 36b can be urged downward by receiving pressure from the piston 36a. In FIG. 5, the tension generated in the liner 42 by the rod 36b is indicated by an arrow T. As shown in FIG. 6, two rods 36b are provided, and the margins 42a on both sides of the liner 42 are pressed against the transfer surface 32a with an appropriate pressure. The rod 36b presses the room portion 42a at a position relatively close to the sheet peeling portion 46.

As a result, an appropriate tension is applied to the raw fabric 40 to prevent it from floating from the transfer surface 32a, and the heat conductive sheet 14 is easily peeled off at the sheet peeling portion 46. The rod 36b may generate a pressing force by, for example, a spring. The means for applying tension to the original fabric 40 is not limited to the tensioner 36, and for example, a friction means for appropriately braking the rotation of the reel 38 may be used.

Next, the adhesive material separating portion 50 will be described, but prior to that, the heat conductive sheet 14 will be described in more detail. FIG. 7 is a partially enlarged side view of the heat conductive sheet 14.

As shown in FIG. 7, the heat conductive sheet 14 is cut into small pieces in advance by the cuts 14a at equal intervals, but since the adhesive material 14c has a strong adhesive force, the adjacent portions 14d are reattached to each other over time. It may end up. Further, although the surface layer sheet 14b tends to form a cut 14a, the adhesive material 14c may not sufficiently form a cut 14a.

That is, in the heat conductive sheet 14, at least the surface layer sheet 14b is divided into small pieces by the cuts 14a at equal intervals, but the adhesive material 14c is not always sufficiently separated. Therefore, it may be difficult for the sheet peeling portion 46 to peel off the liner 42 one by one, or for the suction pad 28 to suck the sheets one by one. Therefore, in the adhesive sheet peeling device 10, the adhesive material separating portion 50 separates the adjacent portion 14d of the adhesive material 14c prior to the peeling treatment in the sheet peeling portion 46. The adhesive material separating portion 50 is provided on the upstream side of the sheet peeling portion 46 on the transfer path of the heat conductive sheet 14. In the present embodiment, the adhesive material separating portion 50 is incorporated in the main mechanism portion 39, but may be provided separately depending on the design conditions.

FIG. 8 is a perspective view of the adhesive material separating portion 50. FIG. 9 is a schematic plan view of the adhesive material separating portion 50. FIG. 10 is a schematic side view of the adhesive material separating portion 50.

The adhesive material separating portion 50 has a transfer surface (second transfer surface) 52 to which the liner 42 to which the heat conductive sheet 14 is attached is transferred, and a direction (X direction) orthogonal to the transfer direction (Y direction) of the liner 42. A pillar (convex portion) 54 that protrudes from the transfer surface 52 over the width of the heat conductive sheet 14 and abuts on the lower surface of the liner 42, and the liner 42 along the transfer surface 52 on the upstream side and the downstream side of the pillar 54. It has a roller (guide) 56 and a roller (guide) 56.

The transfer surface 52 in the present embodiment is a part of the release plate 32 and is an extension surface of the transfer surface 32a. The prism 54 is a regular hexagonal column, symmetrical in the transport direction (Y direction), and fixed on the transfer surface 52 by a fixative 57 so that the corner portion 54a is at the uppermost portion. The corner portion 54a is 120 °. The height H1 of the column 54 from the transfer surface 52 is set to be 7 times or more the thickness W0 of the heat conductive sheet 14.

The roller 56 applies an appropriate tension to the heat conductive sheet 14 and presses the heat conductive sheet 14 toward the transfer surface 52 in front of and behind the pillar 54 so as to be along the upper surface of the pillar 54. The rollers 56 are rotatable and smoothly guide the heat conductive sheet 14 without damaging the surface sheet 14b. It is preferable that the roller 56 appropriately presses and abuts the heat conductive sheet 14 against the transfer surface 52, but there may be some gap between the heat conductive sheet 14 and the transfer surface 52.

In the adhesive material separating portion 50 configured in this way, the pillar 54 extends in the X direction over the width of the heat conductive sheet 14, projects from the transfer surface 52, and abuts on the lower surface of the liner 42. Therefore, as shown in FIG. 10, the heat conductive sheet 14 has a small curvature that is convex upward when passing through the corner portion 54a, and the passage path becomes longer toward the upper side according to the thickness W0, so that the heat conductive sheet 14 is fixed by re-adhesion or the like. A force of peeling is generated between the adjacent portions 14d that have been formed, and the portions are separated from each other. The heat conductive sheets 14 in which the adjacent portions 14d are separated from each other are more reliably peeled from the liner 42 one by one by the sheet peeling portion 46 and sucked one by one by the suction pad 28.

In FIG. 10, the adjacent portion 14d before separation is shown by a broken line on the upstream side of the pillar 54, and the adjacent portion 14d after separation is shown by a solid line on the downstream side. It has been experimentally confirmed that when the height H1 of the prism 54 is set to 7 times or more the thickness W0, it is sufficient to separate the adjacent portion 14d.

Further, if the distance L2 in the Y direction from the column 54 in the two rollers 56 is twice the width L1 of the cut 14a of the heat conductive sheet 14, the heat conductive sheet 14 is prevented from floating and the column 54 is prevented from floating. A suitable peeling action can be obtained by providing a transport path having a small curvature substantially along the convex shape. This has been confirmed experimentally. Further, the roller 56 at this position does not make the heat conductive sheet 14 passing through the lower surface excessively obliquely downwardly convex.

The column 54 is a general-purpose hexagonal column, which is easily available and low in cost. For the same reason, the pillar 54 may be a square pillar (square pillar) having a square cross section as shown by the virtual line in FIG. Even when the pillar 54 is a square pillar, the peripheral portion thereof can have the same configuration, and substantially the same effect can be obtained. The convex portion to be brought into contact with the lower surface of the liner 42 is not limited to the pillar body, and may be an acute-angled portion so as not to damage the liner 42.

FIG. 11 is a schematic side view of the adhesive material separating portion 50A according to the first modification. In the adhesive material separating portion 50A, the pillar 54 of the hexagonal column in the adhesive material separating portion 50 is replaced with the columnar column 58. The columnar body 58 of such a cylinder does not have a concern of damaging the liner 42. The columnar body 58 of a cylinder is easily available and low in cost. Further, it has been experimentally confirmed that when the height H2 of the prism 58 is set to 9 times or more the thickness W0, it is sufficient to separate the adjacent portion 14d.

FIG. 12 is a schematic side view of the adhesive material separating portion 50B according to the second modification. In the adhesive material separating portion 50B, the pillar 54 is provided at a position considerably higher than the transfer surface 52. Even if the pillar 54 is provided at such a high position, the effect of separating the adhesive material 14c can be obtained.

As described above, according to the pressure-sensitive adhesive sheet peeling device 10 according to the present embodiment, the heat conductive sheet 14 is slightly peeled off or peeled off from the liner 42 by the original fabric 40 folding back the first acute-angled portion 32c of the peeling plate 32. It will be easier. The liner 42 can pass through the second acute-angled portion 34c of the transfer plate 34 with respect to the first acute-angled portion 32c, and the heat conductive sheet 14 attached to the liner 42 is arranged to face each other with a width that cannot pass through. Therefore, even if the heat conductive sheet 14 is flexible and has high adhesive strength, it can be reliably peeled off from the liner 42.

The present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

10 Adhesive sheet peeling device 12 Sheet pasting device 14 Heat conduction sheet 14a Cut 20a First moving means 20b Second moving means 28 Suction pad (suction part)
30 Stand 32 Release plate 32a Transfer surface (first transfer surface)
32b Folded surface 32c First acute angle part 34 Transfer plate 34a Transfer surface 34b Bottom surface 34c Second acute angle part 36 Tensioner 36b Rod (pressing part)
38 Reel 39 Main mechanism part 40 Original fabric 42 Liner 42a Room 44 Single liner 46 Sheet peeling part 50 Adhesive material separation part 52 Transfer surface (second transfer surface)
54 Pillar (convex part)
56 Roller (guide)

Claims (15)

An adhesive sheet peeling device that peels an adhesive sheet attached to a liner from the liner.
A release plate configured such that a first transfer surface to which the liner to which the adhesive sheet is attached is transferred and a folded surface to which the liner to which the adhesive sheet is peeled are returned form a first acute angle portion. When,
A transfer plate having a corner portion that is arranged facing the first acute-angled portion with a gap, and a transfer plate.
Have,
The adhesive sheet peeling device is characterized in that the liner can pass through the gap between the first acute angle portion and the corner portion, and the adhesive sheet attached to the liner is set to a width that cannot be passed. .. The pressure-sensitive adhesive sheet peeling device according to claim 1, wherein the corner portion of the transfer plate forms an acute-angled second acute-angled portion. The adhesive sheet peeling device according to claim 1 or 2, wherein the transfer plate includes a transfer surface parallel to the first transfer surface. The pressure-sensitive adhesive sheet peeling device according to claim 3, wherein the transfer surface is arranged at a position offset from the first transfer surface by the thickness of the liner. The pressure-sensitive adhesive sheet peeling device according to any one of claims 1 to 4, wherein the transfer plate is made of resin or has a metal surface coated with resin. The pressure-sensitive adhesive sheet peeling device according to any one of claims 1 to 5, further comprising a tensioner that applies tension in the transfer direction to the liner to which the first transfer surface is transferred. The liner has room on both sides in the direction orthogonal to the transfer direction to which the adhesive sheet is not attached.
The pressure-sensitive adhesive sheet peeling device according to claim 6, wherein the tensioner has a pressing portion for pressing the margin portions on both sides of the liner against the first transfer surface. The pressure-sensitive adhesive sheet according to any one of claims 1 to 7, further comprising a suction portion for adsorbing the pressure-sensitive adhesive sheet at least partially peeled from the liner from the first acute-angled portion to the corner portion. Peeling device. The suction portion includes a first moving means that moves in a first direction orthogonal to the transfer direction of the liner, and a second moving means that moves in a second direction orthogonal to the transfer direction of the liner and the first direction. The adhesive sheet peeling device according to claim 8, wherein the adhesive sheet peeling device is configured to be movable by the above method. The pressure-sensitive adhesive sheet peeling device according to any one of claims 1 to 9, wherein the pressure-sensitive adhesive sheet is a heat-conducting sheet. The adhesive sheet is composed of a surface layer sheet and an adhesive material on which the surface layer sheet is provided on the front side and the back side is attached to the liner, and at least the surface layer sheet is divided into small pieces by cuts at equal intervals. The adhesive sheet peeling device according to any one of claims 1 to 10. On the transfer path of the liner to which the adhesive sheet is attached, the adhesive sheet provided on the upstream side of the sheet peeling portion where the release plate and the transfer plate face each other, and the adhesive sheet attached to the liner. It is provided with an adhesive material separating portion that separates the material along the cut.
The adhesive separating part is
A second transfer surface to which the liner to which the adhesive sheet is attached is transferred, and
A convex portion that protrudes from the second transfer surface and abuts on the lower surface of the liner over the width of the adhesive sheet in a direction orthogonal to the transfer direction of the liner.
A guide for allowing the liner to which the adhesive sheet is attached on the upstream side and the downstream side of the convex portion along the second transfer surface.
11. The adhesive sheet peeling device according to claim 11. 12. The convex portion is a regular hexagonal column or a square column, which is symmetrical to the transfer direction of the liner and is fixed on the second transfer surface so that the corner portion is at the uppermost portion. Adhesive sheet peeling device according to. The adhesive sheet peeling device according to claim 12, wherein the convex portion is a cylinder and is fixed on the second transfer surface. The pressure-sensitive adhesive sheet peeling device according to any one of claims 12 to 14, wherein the guide is provided at a position twice the distance between the cuts on the upstream side and the downstream side from the convex portion. ..

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