JP2009078851A - Sheet-sticking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet-sticking device which can prevent sagging in a release sheet near a folded position, and which enables the stable stripping of an adhesive sheet. <P>SOLUTION: This sheet-sticking device 10 comprises a payout means 12 for applying a payout force to a strip-like roll R obtained by temporarily attaching the adhesive sheet S to the release sheet RL, a strip-off means 13 for stripping off the adhesive sheet S by folding back the release sheet RL paid out via the payout means 12, and a sticking means 14 for sticking the adhesive sheet S, stripped off by the strip-off means 13, on a body W to be attached. The strip-off means 13 is equipped with a peel plate 21 for folding back the roll R by a leading end 21A, and a suction means 22 for sucking in the release sheet RL, near a folded position. The release sheet RL is brought into surface contact with first and second surfaces 21a and 21b which form the leading end 21A of the peel plate 21, by sucking in the release sheet by the suction means 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sheet sticking apparatus, and more particularly to a sheet sticking apparatus that can stably peel an adhesive sheet in a process in which an original fabric in which an adhesive sheet is temporarily attached to a strip-like release sheet is fed.

  2. Description of the Related Art Conventionally, there has been known a sheet sticking apparatus that automatically sticks an adhesive sheet to an adherend conveyed along a conveying means. As such an apparatus, a strip-shaped original sheet in which an adhesive sheet is temporarily attached to a release sheet is used, and the original sheet is folded back at the tip of the peel plate, and the adhesive sheet is peeled from the release sheet at the folded position. Configuration is adopted. In the case of the sheet sticking device having such a configuration, as shown in FIG. 6, when the tension of the original fabric R decreases, there is a case where slackness occurs near the folding position of the release sheet RL by the tip 51 </ b> A of the peel plate 51. . In such a case, the adhesive sheet S is wound up with the original fabric R without being peeled off at the turn-back position, and sheet peeling failure occurs. In order to prevent such a peeling failure, for example, in the apparatus shown in Patent Document 1, when the adhesive sheet cannot be peeled off by the peeling plate, the raw material is reversely conveyed until the peeling position is passed, and is temporarily stopped. So-called retry control is performed in which the sheet is transported again and peeled off.

JP 2002-326616 A

  However, in an apparatus such as Patent Document 1, every time a separation failure occurs, a reverse conveyance process, a temporary stop process, and a re-convey process must be performed, and the number of adhered sheets S per unit time decreases. However, there is a disadvantage that it is significantly lower than the rated processing capacity. Further, the provision of the label peeling confirmation sensor complicates the apparatus configuration, and further inconveniences that the program for controlling them becomes very complicated.

[Object of invention]
The present invention has been devised by paying attention to such inconveniences, and an object of the present invention is to prevent loosening in the vicinity of the folding position of the release sheet and to stably release the adhesive sheet. It is to provide a sticking device.

In order to achieve the above-mentioned object, the present invention provides a sheet sticking apparatus for peeling the adhesive sheet from a strip-shaped raw material in which the adhesive sheet is temporarily attached to the release sheet and sticking the adhesive sheet to an adherend.
A feeding means for applying a feeding force to the original fabric, a peeling means for folding the peeling sheet fed through the feeding means to peel the adhesive sheet, and affixing the adhesive sheet peeled by the peeling means to the adherend And a sticking means for
The peeling means includes a suction means for sucking a peeling sheet in the vicinity of the folding position toward the peeling means.

  In the present invention, the peeling means includes a peel plate that folds the original fabric at the tip, and the suction means contacts the peel sheet by suction on the first surface and the second surface that form the tip of the peel plate. A configuration of being possible is also preferably adopted.

  The suction means may also include a first suction part including a hole provided in the first surface and a second suction part including a hole provided in the second surface. can do.

  Furthermore, the suction means may include a porous body that forms a tip side region of the peel plate.

  According to the present invention, since the release sheet in the vicinity of the folding position is sucked by the suction means, it is possible to avoid the release sheet from being loosened in the vicinity of the folding position as in the prior art. Thereby, even if it does not perform retry control mentioned above, a peeling defect can be prevented reliably and it becomes possible to peel an adhesive sheet stably in the return position of a peeling means. As a result, it is possible to effectively eliminate the disadvantage that the number of adhered sheets per unit time of the adhesive sheet decreases.

  In addition, since the release sheet is brought into surface contact along the surface of the peel plate by the suction means, even if the tension of the original fabric is reduced, it does not affect the folding of the release sheet at the peel plate tip position, as in the past. It is possible to prevent the occurrence of poor peeling due to loosening.

  Furthermore, since the suction means is provided at least on each surface that forms the tip of the peel plate, the suction means can be formed with a simple structure, and the release sheet can be easily in surface contact with each surface that forms the tip of the peel plate. It becomes possible to make it.

  Further, when the suction means is formed using a porous body, the suction force can be exerted uniformly over a wide area.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The schematic front view of the sheet sticking apparatus which concerns on FIG. 1 is shown by FIG. In this figure, a sheet sticking device 10 is provided with a support means 11 for supporting a strip-shaped original fabric R on which an adhesive sheet S is temporarily attached to a release sheet RL at a predetermined interval, and a feeding device for applying a feed force to the original fabric R. Means 12, a peeling means 13 for turning back the raw fabric R fed through the feeding means 12 and peeling the adhesive sheet S from the release sheet RL, and an adhesive sheet S peeled from the release sheet RL conveyed by the conveying means P A pasting means 14 that presses and adheres to the adherend W, and a winding means 15 that is attached to the feeding means 12 and winds the release sheet RL after the adhesive sheet S is peeled off. Yes. Here, each means in the present embodiment is supported by a plate-like frame F located in a substantially vertical plane to form one unit, and is disposed on the transport means P by a stand (not shown). .

  The support means 11 is constituted by a support shaft 17 supported so as to be rotatable with respect to the frame F, and is supported so as to be able to supply an original fabric R wound around the support shaft 17 in a roll shape.

  The feeding means 12 includes a motor M disposed on the back side of the frame F, a driving roller 18 rotatably provided via the motor M, and a pinch that sandwiches the release sheet RL between the driving roller 18. And a roller 19.

  The peeling means 13 includes a peel plate 21 supported by the frame F so that the tip 21A is positioned outside the frame F, and a suction means 22 provided on the peel plate 21 ( (See FIG. 2). As shown in FIG. 3, the peel plate 21 has a substantially pointed shape when viewed from the front by a first surface 21 a, a second surface 21 b, and a third surface 21 c, and the first surface 21 a and the second surface A tip 21A is formed with 21b, and the release sheet RL is abruptly reversed with the tip 21A used as a folding position of the release sheet RL so that the adhesive sheets S can be peeled one by one.

  As shown in FIGS. 2 and 3, the suction means 22 is provided on each surface forming the tip 21A of the peel plate 21, and includes a plurality of holes 24 provided on the first surface 21a. A first suction portion 25, a second suction portion 27 comprising a plurality of holes 26 provided in the second surface 21b, and a passage that communicates with these holes 24 and 26 and extends to the rear end side of the peel plate 21 28. Each of the holes 24 and 26 is provided in the vicinity of the tip 21A of the peel plate 21 and in parallel with the tip 21A at a predetermined interval. The passage 28 is connected to a decompression pump (not shown) via a hose or the like, so that the release sheet RL near the folding position can be sucked by the holes 24 and 26.

  As shown in FIG. 1, the pressing means 14 is composed of a press roller 30 and is supported by the frame F via an arm (not shown). The press roller 30 is located on the tip 21 </ b> A side of the peel plate 21, applies a pressing force to the adhesive sheet S peeled from the release sheet RL, and presses the adhesive sheet S against the adherend W. Note that the pressing means 14 is provided so as to be able to advance and retreat with respect to the adherend W instead of the press roller 30, and is a vacuum grid that temporarily holds the label by suction and presses it against the adherend. Means or the like may be used.

  The winding means 15 includes a winding shaft 31, and the winding shaft 31 winds the release sheet RL with a predetermined torque by a driving source (not shown).

  Next, a method for sticking the adhesive sheet S by the sheet sticking apparatus 10 will be described.

  As an initial operation, the original fabric R supported by the support shaft 17 is pulled out for a predetermined length, and the original fabric R is wound around the tip 21 </ b> A of the peel plate 21, and then the drive roller 18 and the pinch roller 19 are connected. The original fabric R is passed between them, and the lead end of the original fabric R is fixed to the winding shaft 31.

  When the power is turned on, a decompression pump (not shown) of the suction unit 22 is operated, and the motor M of the feeding unit 12 is driven to start feeding the raw material R through the driving roller 18. As a result, the original fabric R is drawn out while being sucked through the holes 24 and 26, and the leading edge of the adhesive sheet S is detected by a sensor (not shown) and stopped at a predetermined position to be in a standby state. Note that, during the standby state and during the unwinding of the original fabric R, as shown in FIG. 3, the release sheet RL has each surface of the first surface 21a and the second surface 21b forming the tip of the peel plate 21. The respective surfaces and the back surface of the release sheet RL come into surface contact with each other, and the release sheet RL is folded back at the tip 21A of the peel plate 21.

  When the adherend W is conveyed by the conveying means P constituted by a belt conveyor or the like, and the adherend W is detected by a sensor (not shown), the motor M is rotated, and the adhesive sheet S is synchronized with the conveyance. Is peeled from the release sheet RL. Then, the peeled adhesive sheet S is applied to the upper surface of the adherend W under the pressing force of the press roller 30. Thereafter, the adherend W is conveyed as it is, and the leading edge of the next adhesive sheet S is detected and stopped by a sensor (not shown), and enters a standby state in preparation for the next sticking.

  Therefore, according to such an embodiment, it is possible to avoid the occurrence of slack in the vicinity of the folding position of the release sheet RL by the suction means 22. Thereby, it is possible to prevent the peeling failure as shown in FIG. 6 and to always peel the adhesive sheet S stably with the tip 21A of the peel plate 21 as shown in FIG. In addition, even when the tension of the original fabric R is unintentionally lowered, the adhesive sheet S can be stably peeled without affecting the folding of the release sheet at the tip 21A of the peel plate 21.

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.
In other words, the present invention has been illustrated and described mainly with respect to specific embodiments, but without departing from the scope of the technical idea and object of the present invention, the shape, position, or With respect to the arrangement and the like, those skilled in the art can make various changes as necessary.
Therefore, the description limited to the shape disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded one part or all part is included in this invention.

  For example, the suction unit 22 can be variously modified as long as the release sheet RL can be sucked, and a plurality of holes 24 and 26 may be provided in parallel with the tip 21A of the peel plate 21. The suction portions 25 and 27 may be slot holes or grooves extending substantially in parallel with the tip 21 </ b> A of the peel plate 21.

  4 and 5, the suction means 22 forms a U-shaped cutout 35 at the tip 21A of the peel plate 21, and a porous body 36 made of a porous member is formed inside the cutout 35. A part of the tip of the peel plate 21 may be formed by the porous body 36. According to this structure, since the area which the peeling sheet RL attracts | sucks can be ensured widely, it can attract | suck with a strong force and can ensure the return | turnback of the peeling sheet RL.

  In addition to the label, the adhesive sheet S may be a protective sheet that is attached to a semiconductor wafer or the like to protect its circuit surface, a mount sheet or a dicing sheet that mounts the semiconductor wafer on a ring frame, or the like.

The schematic front view of the sheet sticking apparatus which concerns on embodiment. The schematic perspective view of the peeling means of the said sheet sticking apparatus. The principal part expanded sectional view of a peel plate. The schematic perspective view similar to FIG. 2 of the peeling means which concerns on a modification. The principal part expanded sectional view similar to FIG. 3 of the modification. Explanatory drawing of the malfunction of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sheet sticking apparatus 12 Feeding means 13 Separating means 14 Sticking means 21 Peel plate 21A Tip 21a First surface 21b Second surface 22 Suction means 24, 26 Hole 25 First suction portion 27 Second suction portion 36 Porous body S Adhesive sheet R Original fabric RL Release sheet W Substrate

Claims (4)

In the sheet sticking apparatus for peeling the adhesive sheet from the strip-shaped raw material on which the adhesive sheet is temporarily attached to the peeling sheet and sticking it to the adherend,
A feeding means for applying a feeding force to the original fabric, a peeling means for folding the peeling sheet fed through the feeding means to peel the adhesive sheet, and affixing the adhesive sheet peeled by the peeling means to the adherend And a sticking means for
The sheet sticking apparatus, wherein the peeling means includes a suction means for sucking a release sheet in the vicinity of the folding position toward the peeling means.   The peeling means includes a peel plate that folds the original fabric at the tip, and the suction means is provided on the first surface and the second surface forming the tip of the peel plate so that the peel sheet can be brought into surface contact by suction. The sheet sticking device according to claim 1, wherein the sheet sticking device is provided.   The suction means includes a first suction portion including a hole provided in the first surface and a second suction portion including a hole provided in the second surface. The sheet sticking device according to claim 2.   3. The sheet sticking apparatus according to claim 2, wherein the suction means includes a porous body that forms a tip side region of the peel plate.

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