JP5820280B2 - Sheet sticking device and sheet sticking method - Google Patents

Description

  The present invention relates to a sheet sticking apparatus and a sheet sticking method for sticking an adhesive sheet having an adhesive layer on one surface of a base sheet to an adherend.

  Conventionally, as this type of sheet sticking device, a feeding means for feeding out the adhesive sheet, and a holding means having a plurality of suction holes and sucking and holding the adhesive sheet fed from the feeding means from the base sheet side through the suction holes. And a pressing unit that presses and adheres the adhesive sheet held by the holding unit to the adherend is known.

  By the way, in order to attach various types of large and small types of adhesive sheets having different shapes with the same sheet pasting apparatus, it is necessary to form the holding means to be capable of sucking and holding the largest-sized adhesive sheet. In this case, in the adhesive sheet having a small shape, the area of the holding means other than the area matching the adhesive sheet is widened, and a large amount of air is sucked from the suction holes in this area. Therefore, the suction force of the area | region which agree | coincides with an adhesive sheet may fall, and an adhesive sheet may fall from a holding means.

  Therefore, conventionally, a suction area changing means capable of changing the size of the suction area is provided by using the suction hole to which suction force is applied among the plurality of suction holes of the holding means as the suction area, and matches the adhesive sheet. There is also known a sheet sticking device that can prevent the suction force of the area to be lowered (for example, see Patent Document 1).

  The suction area changing means is configured to fix a selection sheet covering an area other than the area matching the adhesive sheet on the upper surface of a suction block having a plurality of suction holes provided in the lower part of the holding means. A plurality of types of selection sheets corresponding to a plurality of types of adhesive sheets having different shapes are prepared, and the selection sheets are exchanged according to the shape of the adhesive sheet. However, the replacement of the selected sheet requires that the holding means is once disassembled and the selected sheet is replaced with the suction block. This causes a problem that troublesome work increases and productivity decreases.

JP 2003-327223 A

  An object of the present invention is to provide a sheet pasting apparatus and a sheet pasting method excellent in productivity, in which the suction area of the holding means can be automatically changed according to the size of the adhesive sheet.

In order to solve the above problems, a sheet sticking device of the present invention for sticking an adhesive sheet having an adhesive layer on one surface of a base sheet to an adherend includes a feeding means for feeding the adhesive sheet, and a plurality of suction holes A holding means for holding the adhesive sheet fed from the feeding means from the base sheet side by applying a suction force to the suction hole, and attaching the adhesive sheet held by the holding means A suction area change in which the size of the suction area can be changed, with a pressing means that presses and sticks to the body, and an area where a suction hole to which a suction force is applied exists among the plurality of suction holes of the holding means. And an input means capable of inputting the size of the adhesive sheet, and the suction area changing means changes the size of the suction area based on the size of the adhesive sheet input to the input means. that provided so as to be capable of Both in synchronism with the feeding of the adhesive sheet by the feeding means, characterized in that at the same speed as the feeding speed of the adhesive sheet can be enlarged the size of the suction region in the feeding direction of the adhesive sheet.

Further, in order to solve the above problems, the sheet sticking method of the present invention in which an adhesive sheet having an adhesive layer on one surface of a base sheet is attached to an adherend includes a feeding step of feeding out the adhesive sheet, and a plurality of steps Using a holding means having a suction hole, a holding process for holding the adhesive sheet fed in the feeding process from the substrate sheet side by applying a suction force to the suction hole, and an adhesion held by the holding means It is possible to change the size of the suction area, with the pressing step for pressing and attaching the sheet to the adherend and the area where the suction holes to which the suction force is applied exist among the plurality of suction holes of the holding means. A suction area changing step, and an input step for inputting the size of the adhesive sheet to the input means. In the suction area changing step, the suction is performed based on the size of the adhesive sheet input to the input means. Area Characterized thereby change of can, in synchronization with the feeding of the adhesive sheet by the feeding means, to expand the feeding direction of the adhesive sheet the size of the suction area at the same speed as the feeding speed of the adhesive sheet And

  According to the present invention, the suction area can be automatically changed according to the size of the adhesive sheet simply by inputting the size of the adhesive sheet to the input means. Therefore, the troublesome replacement work of the selection sheet as in the conventional example is not necessary, and the productivity can be improved.

The side view of the sheet sticking apparatus of embodiment of this invention. The perspective view of the sheet sticking apparatus of embodiment. Sectional drawing of the principal part which shows the state in the middle of delivery of an adhesive sheet. Sectional drawing of the principal part which shows the modification of the sheet sticking apparatus of embodiment. The side view of the sheet sticking apparatus of other embodiment.

  Hereinafter, an embodiment in which the present invention is applied to a sheet sticking apparatus for sticking an adhesive sheet AS having an adhesive layer AD on one surface of a base sheet BS to an adherend AH will be described with reference to the drawings. Unless otherwise indicated, terms used in this specification are based on FIG. 1, and “front” indicates the front side in the figure, while “rear” is used for the same depth side. , “Left”, “Right”, “Upper”, and “Lower” are also based on FIG.

  Referring to FIGS. 1 and 2, the sheet sticking apparatus of the present embodiment is disposed on a conveyor CV as a conveying means for conveying an adherend AH and an apparatus frame 1a above the conveyor CV, and an adhesive sheet AS. And a holding means for holding the adhesive sheet AS fed from the feeding means 1 from the base sheet BS side by applying a suction force to the suction holes 21. 2, a pressing unit 3 that presses and adheres the adhesive sheet AS held by the holding unit 2 to the adherend AH, and a suction hole 21 to which a suction force is applied among the plurality of suction holes 21 of the holding unit 2. A suction area changing means 4 capable of changing the size of the suction area and an input means 5 capable of inputting the size of the adhesive sheet are provided.

  The feeding means 1 includes a support shaft 11 that supports a plurality of adhesive sheets AS wound around the strip-shaped release sheet RL and wound around the original fabric RS temporarily attached via the adhesive layer AD, Two upper and lower guide rollers 12, 13; a release plate 14 for peeling the adhesive sheet AS from the release sheet RL by folding the release sheet RL; a drive roller 15 and a nip roller for sandwiching the release sheet RL passing through the release plate 14 16 and a winding shaft 17 that winds up the release sheet RL, and is configured to feed the adhesive sheet AS from the release plate 14 in the left direction (feeding direction). The drive roller 15 and the take-up shaft 17 are rotationally driven by rotational motors DM1 and DM2 as drive devices, respectively.

  The holding means 2 is disposed at a position adjacent to the left side of the peeling plate 14, and a lower plate portion 22 a in which a plurality of suction holes 21 are formed, and an inner space SP opened at the left end surface between the lower plate portion 22 a. A holding head 22 having an upper plate portion 22b formed on the inside, and a pressure reducing means 23 such as a pressure reducing pump or a vacuum ejector connected to the internal space SP of the holding head 22 via a tube 23a.

  The pressing means 3 includes a linear motion motor LM1 as a driving device for moving the holding head 22 up and down, and a gas supply means such as a pressure pump and a pressure tank connected to the internal space SP of the holding head 22 via a tube 31a. 31. The gas supplied by the gas supply means 31 is not limited to air but may be a gas such as nitrogen gas or neon gas.

The suction area changing means 4 includes a first movable member 41 capable of changing the size of the suction area in the feeding direction of the adhesive sheet AS by the feeding means 1 and the size of the suction area in a direction (front-rear direction) perpendicular to the feeding direction. It has a second movable member 42 on the front side and a second movable member 43 on the rear side that can change the height.
The first movable member 41 is inserted into the internal space SP from the opening of the internal space SP of the holding head 22 and slidably contacts the upper surface of the lower plate portion 22a and the inner wall (lower surface and side wall) of the upper plate portion 22b. Is closed from above. Then, the output shaft LM2a of the linear motor LM2 as a driving device is connected to the first movable member 41, and the size of the suction area is changed by moving the first movable member 41 in the left-right direction by the linear motor LM2. It is possible.
The front and rear second movable members 42 and 43 are in sliding contact with the lower surface of the lower plate portion 22a and close the suction hole 21 from below. The output shaft LM3a of the direct acting motor LM3 as the driving device is connected to the front second movable member 42, and the output shaft LM4a of the direct acting motor LM4 as the driving device is connected to the rear second movable member 43. The size of the suction region can be changed by moving the second movable members 42 and 43 on the front side and the rear side in the front-rear direction by the linear motors LM3 and LM4.
The linear motion motors LM3 and LM4 are supported on the upper surface of the holding head 22, and the linear motion motor LM2 is supported so as to intersect the upper surfaces of the linear motion motors LM3 and LM4, and on the upper surface of the linear motion motor LM2. The output shaft LM1a of the linear motor LM1 is connected.

  The input means 5 includes an image pickup means 5a composed of an optical sensor, a CCD camera, and the like, and a control means 5b composed of a personal computer, a sequencer, etc. for controlling the overall operation of the sheet sticking apparatus. ) Is transmitted to the control means 5b, and the control means 5b controls the linear motors LM2, LM3, LM4 based on the image data.

  When affixing the adhesive sheet AS to the adherend AH, first, the decompression means 23 is operated to suck air from the suction holes 21, and in this state, the feeding means 1 is operated to move the left side of the peeling plate 14 to the left. The adhesive sheet AS is fed out, and this adhesive sheet AS is sucked through the suction hole 21 from the base sheet BS side on the upper surface thereof and held by the holding head 22. Further, when the next adhesive sheet AS reaches the vicinity of the tip of the peeling plate 14, the operation of the feeding means 1 is stopped.

  Next, when it is detected by an unillustrated sensor that the adherend AH has reached the position immediately below the holding head 22, the conveyor CV is temporarily stopped and the holding head 22 is moved downward by the linear motor LM1, The adhesive sheet AS is pressed and stuck on the adherend AH, and then the holding head 22 is moved up. Thus, one sheet pasting operation is completed, and thereafter the same operation as described above is repeated.

  By the way, the shape of the adhesive sheet AS is not constant. For example, a large adhesive sheet AS may be affixed as shown by a two-dot chain line in FIGS. Therefore, the holding head 22 is formed in a size capable of sucking and holding a large adhesive sheet AS. In this case, for the small adhesive sheet AS shown by the solid line in FIGS. 1 and 2, the holding head 22 is too large, and a large amount of air comes from the suction holes 21 in regions other than the region corresponding to the planar shape of the small adhesive sheet AS. May be sucked and the suction force for sucking the small adhesive sheet AS may be reduced, and the adhesive sheet AS may fall off the holding head 22.

Therefore, the control means 5b controls the suction area changing means 4 based on the image data of the adhesive sheet AS imaged by the imaging means 5a, and the size of the suction area of the holding head 22 according to the size of various adhesive sheets AS. I am trying to change that.
That is, the suction area is set so that the right end portion of the adhesive sheet AS substantially coincides with the right end portion of the holding head 22, and the center position in the front-rear direction of the holding head 22 becomes the center position in the front-rear direction of the adhesive sheet AS. Is set to And the control part 5b calculates the left-right direction dimension and the front-back direction dimension of the said adhesive sheet AS based on the image data of the adhesive sheet AS imaged by the imaging means 5a. Then, the linear motor LM2 is driven so that the right end portion of the first movable member 41 is disposed at a position (position shown in FIG. 1) that is separated from the right end portion of the holding head 22 by the horizontal dimension of the adhesive sheet AS. The Further, the linear motors LM3 and LM4 are driven so that the front and rear second movable members 42 and 43 are disposed at positions separated by the front-rear dimension of the adhesive sheet AS. Thereby, the suction force does not reach the suction holes 21 other than the suction area corresponding to the size of the adhesive sheet AS, and even if the adhesive sheet AS has a small shape, a large amount of air is sucked from the area other than the suction area. Thus, the adhesive sheet AS can be reliably prevented from falling off. Since the suction region can be automatically changed according to the size of the adhesive sheet AS, the troublesome replacement work of the selection sheet as in the conventional example is not required, and the productivity can be improved.

  If the adherend AH is hard, the front and rear second movable members 42 and 43 are in the way, and the adhesive sheet AS cannot be pressed against the adherend AH. In this case, when the holding head 22 is moved down to a predetermined position, the operation of the decompression unit 23 is stopped and the gas supply unit 31 is operated, and the adhesive sheet AS is pressed against the adherend AH by the gas blown from the suction hole 21. And paste it. On the other hand, if the adherend AH can be deformed, the second movable members 42 and 43 on the front side and the rear side do not get in the way, and it is not necessary to blow out the gas from the suction hole 21. The tube 31a is not necessarily provided.

  By the way, when the adhesive sheet AS is fed out from the feeding means 1 while the first movable member 41 is stopped at a position corresponding to the horizontal dimension of the adhesive sheet AS, for example, if the adhesive sheet AS is weak, FIG. As shown by a two-dot chain line, the adhesive sheet AS fed from the feeding means 1 (peeling plate 14) hangs down, and the adhesive sheet AS cannot be held.

  Therefore, in synchronization with the feeding of the adhesive sheet AS by the feeding means 1, the suction area can be enlarged in the feeding direction at the same speed as the feeding speed of the adhesive sheet AS. That is, before feeding out the adhesive sheet AS, the first movable member 41 is moved and waited so that the right end portion thereof is positioned in the vicinity of the right end portion of the internal space SP, and as shown by the arrow in FIG. In synchronization with the feeding of the adhesive sheet AS, the first movable member 41 is moved in the feeding direction (leftward) to the position corresponding to the size of the adhesive sheet AS at the same speed as the feeding speed of the adhesive sheet AS. According to this, a suction force is sequentially applied to the suction hole 21 of the suction region from the right end side in synchronism with the feeding of the adhesive sheet AS, and a strong suction force is applied to the suction hole 21 to which the suction force is applied. Acts, even if the adhesive sheet AS is weak, it can be reliably held without causing its drooping.

  When a strong suction force acts in such an operation to hinder the feeding of the adhesive sheet AS, air is positively applied between the left end portion of the adhesive sheet AS and the right end portion of the first movable member 41. In particular, the adhesive sheet AS may be fed out and the first movable member 41 may be moved with a predetermined space taken into the internal space SP.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, as shown in FIG. 4, the first movable member 41 is provided with a packing member 41 a that blocks gas movement at the right end of the first movable member 41 without closing the suction hole 21 from above, You may enable it to change the magnitude | size of an attraction | suction area | region as the structure which can divide | segment internal space SP into the space which the attraction | suction force of the decompression means 23 reaches, and the space which does not reach.

  Further, the first movable member 41 is configured to be in sliding contact with the lower surface of the lower plate portion 22a, and the suction hole 21 is closed from below, and the front and rear second movable members 42 and 43 are disposed in the internal space SP. You may comprise so that it may insert in. Also in this case, the front and rear second movable members 42 and 43 can divide the internal space SP into a space where the suction force of the decompression means 23 reaches and a space where it does not reach without closing the suction hole 21 from above. A configuration is sufficient.

Note that one of the first movable member 41 and the front and rear second movable members 42 and 43 is omitted, or one of the front second movable member 42 and the rear second movable member 43 is omitted. It is also possible to do.
Further, the suction region changing means 4 is provided in each suction hole 21 in addition to using the movable members 41, 42, 43, and is a valve capable of closing each suction hole 21 using electricity or air as a drive source, You may comprise with a lid, a stopper, etc.

  Further, when the imaging means 5a is configured by an optical sensor, the horizontal dimension of the adhesive sheet AS is, for example, when the optical sheet reacts with the adhesive sheet AS when the adhesive sheet AS is fed out, or in an OFF state. The left and right dimension of the adhesive sheet AS is, for example, a plurality of optical sensors arranged in the front-rear direction, and ON in response to the adhesive sheet AS among the plurality of optical sensors, or The number of optical sensors in the OFF state may be counted.

  Furthermore, as shown in FIG. 5, the raw fabric RS supported on the support shaft 11 of the feeding means 1 has a belt-like sheet WS having an adhesive layer AD on one surface of the belt-like base material sheet BS. It may be temporarily attached to the strip-shaped release sheet RL. In this case, the feeding means 1 is arranged between the upper and lower guide rollers 12 and 13 in addition to the same members as those in the above embodiment, and the adhesive sheet AS is formed inside the cut by forming a cut in the belt-like sheet WS. And a cutting means 18 for forming an unnecessary sheet US outside the cut.

  The cutting means 18 includes a pair of front and rear round cutters 181 that form cuts along the front and rear sides of the adhesive sheet AS, a flat cutter 182 that forms cuts along the side intersecting the feeding direction of the adhesive sheet AS, and these cutters. It is comprised by the roll-shaped and plate-shaped platens 183 and 184 which oppose on both sides of 181 and 182 original fabric RS. The round cutter 181 and the flat cutter 182 are moved forward and backward toward the belt-like sheet WS by linear motors LM5 and LM6 as drive devices, and the round cutter 181 is movable at least in the front-rear direction by a drive device not shown. Thus, the adhesive sheets AS having different shapes can be formed.

  In this case, the cutting means 18 is controlled based on the shape data of the adhesive sheet AS input via the keyboard of the control means 5b, for example, a personal computer, and the adhesive sheet AS having the shape according to this data is formed. In this case, the imaging unit 5a may not be used, and the linear motion motors LM2, LM3, and LM4 are controlled based on the data input to the control unit 5b, and the suction area is set to the size of the adhesive sheet AS. It can be changed accordingly.

  In addition, when using original fabric RS which temporarily adhered adhesive sheet AS to peeling sheet RL, IC which memorize | stored the data regarding original fabric RS including the magnitude | size and shape of adhesive sheet AS in the core cylinder which wound original fabric RS A data storage member such as a tag is attached, and this data may be read by a reader provided in the sheet sticking apparatus. In this case, a reader may be included in the input means.

Moreover, in the said embodiment, although the area | region corresponding to the outline (planar shape) of adhesive sheet AS was made into the suction area | region, the said suction area | region may be smaller than the planar shape of adhesive sheet AS, and it will adhere if there are few. It may be larger than the planar shape of the sheet AS. That is, when the holding means 2 sucks and holds the adhesive sheet AS, a large amount of air is sucked from the suction hole 21 in a portion where the adhesive sheet AS is not in contact with the holding head 22, and suction force in the suction region is obtained. Is not particularly limited as long as it is possible to prevent the adhesive sheet AS from dropping off from the holding means 2 due to a decrease in the thickness.
Furthermore, the shape of the adhesive sheet AS may be a shape other than a rectangle such as a round shape, an oval shape, a rhombus, or a triangle, and even when the shape of the adhesive sheet AS is a shape other than such a square shape, the adhesive sheet A suction area smaller than the planar shape of the AS may be formed, or a slightly larger suction area may be formed.

  Further, the type and material of the adhesive sheet AS are not particularly limited. For example, the adhesive sheet AS has an intermediate layer between the base sheet BS and the adhesive layer AD, or the upper surface of the base sheet BS. Three or more layers such as those having a cover layer may be used. Further, the adhesive sheet AS may be one that can peel the base sheet BS from the adhesive layer AD, such as a so-called double-sided adhesive sheet. Alternatively, it may have a multilayer intermediate layer, or may be a single layer or multilayer without an intermediate layer. Furthermore, the adherend AH may be an appropriate article (for example, a food or a resin container), the adhesive sheet AS may be a label, the adherend AH is a semiconductor wafer, and the adhesive sheet AS is protected. It may be a sheet, a dicing tape, a die attach film, or the like. In this case, the semiconductor wafer can be exemplified by a silicon semiconductor wafer, a compound semiconductor wafer, and the like. The adhesive sheet AS to be attached to such a semiconductor wafer is not limited to a protective sheet, a dicing tape, and a die attach film, but any other sheet. An adhesive sheet having any application and shape such as a film and a tape can be applied. Further, the adherend AH may be an optical disk substrate, and the adhesive sheet S may have a resin layer constituting a recording layer. As described above, as an adherend, not only other plate-like members such as glass plates, steel plates, earthenware, wood plates, resin plates, etc., but also members and articles in any form can be targeted.

  Furthermore, the drive device in the above embodiment includes an electric device such as a rotation motor, a linear motion motor, a linear motor, a single-axis robot, and an articulated robot, an actuator such as an air cylinder, a hydraulic cylinder, a rodless cylinder, and a rotary cylinder. In addition to these, a combination of them directly or indirectly may be employed.

  AS ... Adhesive sheet, BS ... Base material sheet, AD ... Adhesive layer, AH ... Adhered body, 1 ... Feeding means, 2 ... Holding means, 21 ... Suction hole, 3 ... Pressing means, 4 ... Suction area changing means, 41 ... 1st movable member, 42, 43 ... 2nd movable member, 5 ... Input means.

Claims (2)

A sheet sticking device for sticking an adhesive sheet having an adhesive layer on one surface of a base sheet to an adherend,
A feeding means for feeding out the adhesive sheet;
Holding means for holding the adhesive sheet fed from the feeding means from the base sheet side by having a plurality of suction holes and applying suction force to the suction holes;
A pressing unit that presses and adheres the adhesive sheet held by the holding unit to an adherend;
A suction region changing means capable of changing the size of the suction region, wherein a suction region where a suction hole to which suction force is applied exists among the plurality of suction holes of the holding unit;
Input means capable of inputting the size of the adhesive sheet,
The suction area changing means is provided to be changed the size of the suction region based on the size of the adhesive sheet that is input to the input means Rutotomoni, synchronized to the feeding of the adhesive sheet by the feeding means The size of the suction area can be enlarged in the feeding direction of the adhesive sheet at the same speed as the feeding speed of the adhesive sheet . A sheet attaching method for attaching an adhesive sheet having an adhesive layer on one surface of a base sheet to an adherend,
A feeding step of feeding out the adhesive sheet;
Using a holding means having a plurality of suction holes, holding the adhesive sheet fed in the feeding process by applying a suction force to the suction holes from the substrate sheet side;
A pressing step of pressing and adhering the adhesive sheet held by the holding means to the adherend;
A suction area changing step capable of changing the size of the suction area, where the suction hole to which a suction force is applied is present among the plurality of suction holes of the holding means,
An input step of inputting the size of the adhesive sheet into the input means,
In the suction area changing step, the size of the suction area is changed based on the size of the adhesive sheet input to the input unit, and the bonding is performed in synchronization with the feeding of the adhesive sheet by the feeding unit. A sheet sticking method , wherein the suction area is enlarged in the feeding direction of the adhesive sheet at the same speed as the sheet feeding speed .

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