JP2012176775A - Sheet peeling device and peeling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet peeling device and method capable of reliably peeling an adhesive sheet from a release sheet.SOLUTION: The sheet peeling device 1 includes: a delivery means 2 for delivering a rolled web R configured such that the adhesive sheet S with an adhesive layer AD on one surface of a base material sheet BS is temporarily attached to one surface RA of the belt-like release sheet RL via the adhesive layer AD; a peeling means 3 with a folding edge 34 for peeling the adhesive sheet S from the release sheet RL by folding the peeling sheet RL of the rolled web R delivered by the delivery means 2; and a biasing means 4 for promoting the peeling of an edge S1 in a delivery direction of the adhesive sheet S, by biasing a portion of the release sheet RL folded at the folding edge 34 from one surface RA side of the release sheet to the other surface RB side thereof.

Description

  The present invention relates to a sheet peeling apparatus and a peeling method for peeling an adhesive sheet temporarily attached to a release sheet from the release sheet.

Conventionally, a sheet peeling apparatus that feeds an original fabric with an adhesive sheet temporarily attached to one surface of a strip-shaped release sheet, folds the fed release sheet with a release plate, and peels the adhesive sheet from the release sheet Is known (see, for example, Patent Document 1).
The sheet peeling apparatus described in Patent Document 1 detects whether or not the leading edge of the label is peeled from the peeling sheet at the peeling edge of the peeling plate, and when the leading edge is not peeled from the peeling sheet, It is configured to peel the adhesive sheet from the release sheet by transporting the substrate back to the release position of the release plate and then transporting it in the forward direction again to retry the release of the adhesive sheet.

JP 2002-326615 A

  However, the sheet peeling apparatus described in Patent Document 1 has a disadvantage that the apparatus configuration and the control thereof are complicated. In order to reliably peel the adhesive sheet from the release sheet with a simple configuration, the folded width (hereinafter simply referred to as “folded back”) is the width between the release sheets at the position where the release sheet has passed the bent edge of the release plate for a predetermined length. The width may be referred to as “width”, and the release sheet may be turned at an acute angle and the release sheet may be slid at the portion. However, in such a configuration, although the peeling failure is reduced, the peeling edge of the peeling plate becomes sharp, and when the stress is concentrated on the folded portion of the peeling sheet, the peeling sheet is cut. Another inconvenience occurs. In particular, when the release sheet is slid at the sharply formed release edge, cutting of the release sheet becomes remarkable.

  The objective of this invention is providing the sheet | seat peeling apparatus and peeling method which can peel an adhesive sheet from a peeling sheet reliably.

  To achieve the above object, the sheet peeling apparatus of the present invention is such that an adhesive sheet having an adhesive layer on one surface of a base sheet is temporarily attached to one surface of a strip-shaped release sheet via the adhesive layer. A feeding means for feeding out the original fabric, a peeling means having a folding edge for folding the release sheet of the original fabric fed by the feeding means and peeling the adhesive sheet from the peeling sheet, and the folding end Biasing means for urging the peeling of the front end portion of the adhesive sheet in the feeding direction by biasing a part of the release sheet bent at the edge in a direction from one side of the release sheet toward the other side. It is characterized by providing.

In this invention, the said peeling means is equipped with the peeling member which has a recessed part which faces the other surface of the peeling sheet bent by the said bending edge, The said biasing means makes the said release sheet the space in the said recessed part. It is preferable to urge toward.
Moreover, in this invention, it is preferable that the said biasing means attracts | sucks the said peeling sheet from the said recessed part side via the suction hole provided in the inside of the said recessed part.

  On the other hand, in the sheet peeling method of the present invention, an original sheet in which an adhesive sheet having an adhesive layer on one side of a substrate sheet is temporarily attached to one side of a strip-like release sheet via the adhesive layer is drawn out. Bending the unrolled release sheet and biasing a part of the folded release sheet in a direction from one side of the release sheet to the other side, thereby feeding the adhesive sheet It is characterized by facilitating peeling of the tip.

  According to the present invention as described above, the adhesive sheet is temporarily attached to one surface, and a part of the release sheet folded at the bent edge is directed from one surface side of the release sheet to the other surface side. By providing the biasing means for biasing in the direction, the folding width can be reduced and the folding angle of the release sheet can be made acute. For this reason, even if it is an adhesive sheet with strong adhesive force with respect to a peeling sheet and it is hard to peel from the said peeling sheet, the trigger of peeling can be given to an adhesive sheet, and an adhesive sheet can be reliably peeled from a peeling sheet. In addition, even if the bent edge becomes sharp due to such a configuration, for example, the configuration in which the biasing means biases the release sheet only when the adhesive sheet is not peeled from the release sheet. If so, the frequency with which the release sheet is cut can be reduced. Further, if the urging means urges the release sheet in a state where the feeding of the original fabric is stopped, the frequency with which the release sheet is cut can be further reduced.

In the present invention, if the urging means is configured to urge the release sheet toward the space in the recess, the portion of the release sheet facing the recess can enter the recess, so that the elasticity of the adhesive sheet The function of the restoring force is promoted, and the adhesive sheet can be more reliably peeled from the release sheet.
Further, if the urging means is configured to suck the release sheet into the recess, the apparatus can be made compact.

The side view of the sheet peeling apparatus which concerns on 1st Embodiment of this invention. Operation | movement explanatory drawing of the sheet peeling apparatus of FIG. Operation | movement explanatory drawing of the sheet peeling apparatus of FIG. The elements on larger scale of the sheet peeling apparatus which concerns on 2nd Embodiment of this invention. The elements on larger scale of the sheet peeling apparatus which concerns on 3rd Embodiment of this invention.

Hereinafter, each embodiment of the present invention will be described with reference to the drawings.
In the second and subsequent embodiments, the same constituent members as those described in the first embodiment and constituent members having the same functions are denoted by the same reference numerals as those in the first embodiment. The description of is omitted or simplified.
In addition, for example, expressions that indicate directions such as up, down, left, right, front, and back, which are not explicitly described in each embodiment, are all used with reference to FIG.

[First Embodiment]
As shown in FIG. 1, the sheet peeling apparatus 1 of the present embodiment is configured such that an adhesive sheet S having an adhesive layer AD on one surface of a base sheet BS is formed of a strip-shaped release sheet RL via the adhesive layer AD. Feeding means 2 for feeding out the original fabric R temporarily attached to the adherend surface RA, which is one surface, and peeling means for peeling the adhesive sheet S from the release sheet RL by bending the peeled sheet RL of the delivered raw fabric R 3 and a biasing means 4 for biasing a part of the release sheet RL bent by the release means 3 in a direction from the adherend surface RA side of the release sheet RL toward the opposite surface RB side, which is the other surface; And a detecting means 5 for detecting whether or not the leading end S1 in the feeding direction of the adhesive sheet S has been peeled off from the release sheet RL, and the adhesive peeled off on the adherend W conveyed by the conveying means 6 such as a belt conveyor. The sheet S can be extended. It is. The adhesive sheet S fed out from the sheet peeling apparatus 1 is pressed and stuck to the adherend W by sticking means such as a sticking roller 7 provided in the vicinity of the peeling means 3.

  The feeding means 2 is supported by the frame 10. The feeding means 2 is driven by a support roller 21 that winds and supports the original fabric R, guide rollers 22 and 23 that guide the original fabric R drawn from the support roller 21, and a rotation motor 24 as a drive device. Driving roller 25, pinch roller 26 that sandwiches release sheet RL between drive roller 25, and recovery roller 27 that recovers release sheet RL by a driving device (not shown).

  The peeling means 3 includes a peeling plate 31 as a peeling member supported by the frame 10. The peeling plate 31 includes an upper surface portion 32 and an inclined surface portion 33 connected to the left end portion of the upper surface portion 32, and forms a position where the upper surface portion 32 and the inclined surface portion 33 intersect as a bent end edge 34. That is, as shown in FIG. 2, the upper surface portion 32 and the inclined surface portion 33 have a folded width L1 that is the width between the release sheets RL at a position where the release sheet RL has passed the bent end edge 34 for a predetermined length H. It is configured as follows. The folding angle of the release sheet RL at this time is α1. The inclined surface portion 33 is provided with a recess 35 facing the opposite surface RB of the release sheet RL in the vicinity of the bent edge 34, and a suction hole for connecting the biasing means 4 and the recess 35 is provided inside the release plate 31. 36 is provided. That is, as shown in FIG. 3, the upper surface portion 32 and the concave portion 35 have a folding width L2 that is the width between the release sheets RL at a position where the release sheet RL has passed the bent end edge 34 by a predetermined length H. It is configured. The folding angle of the release sheet RL at this time is α2. Here, the folding width L2 is set to be smaller than the folding width L1, and the folding angle α2 is also set to be smaller than the folding angle α1.

  The biasing means 4 includes a suction device 41 connected to the suction hole 36 of the peeling plate 31 and is provided so that the peeling sheet RL folded back at the bent edge 34 can enter the recess 35. .

  The detecting means 5 detects whether or not the tip S1 has been peeled off from the release sheet RL by detecting the presence or absence of the adhesive sheet S when the tip S1 of the adhesive sheet S passes through the bent edge 34 by a predetermined amount. It is configured to recognize whether or not.

In the above sheet peeling apparatus 1, while showing the procedure which peels the adhesive sheet S from the peeling sheet RL, the procedure which sticks the peeled adhesive sheet S to the to-be-adhered body W is demonstrated.
First, as shown in FIG. 1, the original fabric R wound around the support roller 21 is passed, and the lead end is fixed to the collection roller 27. When an activation command is input by an operating means (not shown), the driving roller 25 is driven by the rotation motor 24, and the feeding of the original fabric R is stopped in a state where the original fabric R has been fed out by a predetermined length, and the standby It becomes a state. At this time, the front end S1 of the adhesive sheet S is set to stop at the position indicated by the solid line in FIG.

  Here, as shown in FIG. 2, when the detecting means 5 detects that the leading end S1 of the adhesive sheet S has not passed through the bent edge 34 for a predetermined length H, FIG. As shown, the biasing means 4 drives the suction device 41 (see FIG. 1) to suck the release sheet RL, thereby pulling a portion of the release sheet RL facing the recess 35 into the recess 35. As a result, the folding width can be reduced, and the folding angle of the release sheet RL can be reduced, and the elastic restoring force of the adhesive sheet S is facilitated to be simply folded back through the folding edge 34. Even if it is the adhesive sheet S that could not be peeled off by itself, as shown by the solid line in FIG. 3, the tip end portion S1 can be reliably peeled from the release sheet RL. Here, if the suction by the suction device 41 and the release thereof are repeated, the action of the elastic restoring force of the adhesive sheet S can be efficiently promoted, and the tip end portion S1 can be more reliably peeled off. Note that a pressure device (not shown) may be connected to the suction hole 36 so that the release sheet RL drawn into the recess 35 is forced out of the recess 35. And if the front-end | tip part S1 peels from the peeling sheet RL, the said front-end | tip part S1 will be detected by the detection means 5, and will be in a standby state similarly to the above.

  Next, when it is detected by a sensor (not shown) that the adherend W has been transported by the transport means 6, the feeding means 2 feeds the original fabric R at substantially the same speed as the transport speed of the adherend W. Resume. Along with this feeding, the adhesive sheet S is pressed by the sticking roller 7 and attached to the adherend W while being peeled from the release sheet RL by the release plate 31. The feeding means 2 continues to feed the original fabric R even after the rear end of the adhesive sheet S has passed through the bent edge 34, and the leading end S1 of the next adhesive sheet S stops at the position indicated by the solid line in FIG. Thus, the rotation motor 24 is controlled. Thereafter, the same operation as described above is repeated.

  According to the present embodiment as described above, even if the adhesive sheet S has a strong adhesive force to the release sheet RL, it is possible to form a trigger for the release on the adhesive sheet S. It can peel from RL. In addition, when the tip end portion S1 of the adhesive sheet S passes through the bent end edge 34 and is not peeled off, the configuration is made sharp when the folding width is reduced and the folding angle is reduced. Compared to the case where the release sheet RL is always slid at the bent edge 34, the risk of the release sheet RL being cut at the bent edge 34 can be reduced. Furthermore, when it is set as the structure which folds back peeling sheet RL in the bending edge 34 comprised sharply in the state which stopped drawing | feeding-out of original fabric R, the said peeling sheet RL slides on the sharp bending edge 34 Therefore, the release sheet RL can be reliably prevented from being cut at the bent edge 34.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
The difference between the present embodiment and the first embodiment is that the urging means 4 urges the release sheet RL toward the concave portion 35 by pressing the release sheet RL from the adherend surface RA side. In the vicinity of the peeling means 3, a sticking means 8 that can adsorb and lift the adhesive sheet S is provided, and the adhesive sheet S fed out from the sheet peeling device 1 is pressed against the adherend W by the sticking means 8. And pasted. In addition, you may employ | adopt what is called the air jet type sticking method which blows off the adhesive sheet S hold | maintained by adsorption with compressed air, and sticks it on the adherend W.

  The urging unit 4 includes a pressing roller 42 and a linear motion motor 45 in which an output shaft 44 is fixed to a support member 43 that supports the pressing roller 42. By driving the linear motion motor 45, the concave portion 35 in the release sheet RL. The release sheet RL is configured to enter the concave portion 35 by pressing the portion facing to the pressure roller 42 with the pressing roller 42. The urging unit 4 can repeat the pressing of the release sheet RL by the pressing roller 42 and the release thereof by moving the pressing roller 42 forward and backward with respect to the release sheet RL by driving the linear motion motor 45.

  Also according to this embodiment described above, the same effect as in the first embodiment can be obtained. Further, since the urging means 4 can be provided on the bent edge 34 side of the release plate 31, the degree of freedom of the layout of the devices constituting the sheet peeling apparatus 1 can be improved.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
The difference between this embodiment and other embodiments is that the release sheet RL is sent to the drive roller 25 (see FIG. 1) in a state of being spaced from the inclined surface portion 33, and the biasing means 4 is attached to the release sheet RL. This is a point that the release sheet RL is urged toward the surface RB opposite to the adherend surface RA by blowing gas onto the surface RA. In addition, it is the same as that of the said 1st and 2nd embodiment that the angle which the upper surface part 32 and the inclined surface part 33 make is an angle of the grade which does not cut | disconnect the peeling sheet RL.

  The urging means 4 includes a gas ejection device 46, and blows gas to the release sheet RL by jetting gas from the gas ejection device 46, thereby attaching the release sheet RL from the adherend surface RA side to the opposite surface RB side. It is configured to accelerate the peeling of the adhesive sheet S. Further, the urging means 4 can repeat the urging of the release sheet RL and the release thereof by repeating the gas ejection from the gas ejection device 46. The gas ejected from the gas ejection device 46 may be air, a gas such as nitrogen gas or neon gas, or an air-fuel mixture.

  Also according to this embodiment described above, the same effects as those of the first and second embodiments can be obtained. In addition, since the urging means 4 includes the gas ejection device 46, the urging means 4 can be configured simply, and the sheet peeling apparatus 1 can be configured simply and inexpensively.

  As described above, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations. In addition, the description of the shape, material, and the like disclosed above is exemplary for ease of understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

  In the second embodiment, the release sheet RL is pressed by the pressing roller 42 by driving the linear motion motor 45. For example, the release sheet RL is pressed by the pressing roller 42 by the biasing force of a biasing member such as a spring. Alternatively, a vibration means such as a vibration motor may be used in place of the direct acting motor 45. In the second embodiment, the pressing roller 42 is used. However, a blade material, rubber, resin, sponge, or the like may be used instead of the pressing roller 42.

  In each of the above embodiments, when it was detected that the tip portion S1 of the adhesive sheet S was not peeled off, the release sheet RL was urged to promote the peeling of the tip portion S1, but as the release sheet RL, When a material that is difficult to cut, such as a resin sheet, is used, the release sheet RL may be selected so as to be always urged as necessary.

  In each of the above embodiments, the release plate 31 has folded the peeled release sheet RL of the raw fabric R into an acute angle, but is not limited thereto. That is, the peeling plate 31 does not necessarily have an acute angle shape at the bent end edge 34 portion, and may have an obtuse angle shape. In other words, the urging means 4 only needs to be configured so that the folding width and the folding angle can be displaced small. In addition to the peeling plate 31, other members such as rollers may be used as the peeling member as long as the peeling sheet RL of the fed raw sheet R is redirected and conveyed.

  In each of the above embodiments, the adhesive sheet S is not specifically illustrated. However, in the sheet peeling apparatus (sticking method) of the present invention, the type and material of the adhesive sheet S are not particularly limited. When the body W is an appropriate article (for example, a cardboard case or a resin container), the adhesive sheet S may be a label for decoration or quality display, and when the adherend W is a semiconductor wafer, the adhesive sheet S. May be a protective sheet, a dicing tape, a die attach film, or the like. At this time, the semiconductor wafer can be exemplified by a silicon semiconductor wafer, a compound semiconductor wafer, etc., and the adhesive sheet to be attached to such a semiconductor wafer is not limited to the above, but any other application such as any other sheet, film, tape, etc. An adhesive sheet having a shape can be applied. Further, when the adherend W is an optical disk substrate, the adhesive sheet S may have a resin layer constituting a recording layer.

  In addition, the driving device in each of the above embodiments is an electric device such as a rotation motor, a linear motion motor, a linear motor, a single-axis robot, an articulated robot, an actuator such as an air cylinder, a hydraulic cylinder, a rodless cylinder, and a rotary cylinder. In addition, it is possible to adopt a combination of them directly or indirectly (some of them overlap with those exemplified in the embodiment).

DESCRIPTION OF SYMBOLS 1 Sheet peeling apparatus 2 Feeding means 3 Peeling means 4 Biasing means 31 Peeling plate (peeling member)
34 Bent edge 35 Recess 36 Suction hole AD Adhesive layer BS Base sheet R Original fabric RL Release sheet RA Adhered surface (one surface)
RB Opposite side (the other side)
S Adhesive sheet

Claims (4)

A feeding means for feeding out the original fabric temporarily attached to one surface of the strip-shaped release sheet through the adhesive layer, the adhesive sheet having an adhesive layer on one surface of the base sheet;
A peeling means having a bent edge for folding the release sheet of the original fabric fed by the feeding means and peeling the adhesive sheet from the release sheet;
By urging a part of the release sheet bent at the bent edge in a direction from one surface side of the release sheet to the other surface side, the peeling of the leading end portion in the feeding direction of the adhesive sheet is promoted. And a biasing means. The peeling means includes a peeling member having a recess facing the other surface of the release sheet folded at the bent edge,
The sheet peeling apparatus according to claim 1, wherein the biasing unit biases the release sheet toward a space in the recess.   3. The sheet peeling device according to claim 2, wherein the biasing unit sucks the release sheet from the concave side through a suction hole provided in the concave portion. The adhesive sheet having an adhesive layer on one side of the base sheet is fed out the original fabric temporarily attached to one side of the strip-shaped release sheet via the adhesive layer,
Bend the unrolled sheet,
By urging a part of the folded release sheet in a direction from one surface side of the release sheet toward the other surface side, the peeling of the front end portion in the feeding direction of the adhesive sheet is promoted. Sheet peeling method.

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