JP2013067411A - Sheet sticking apparatus and sheet sticking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet sticking apparatus for sticking an adhesive sheet AS to an adherend AH, capable of positioning the adhesive sheet AS without causing it to fall or bend, and preventing a deviation of a sticking position and sticking failures such as creases and air bubbles.SOLUTION: The sheet sticking apparatus includes a delivery means for delivering the adhesive sheet AS; a positioning means 2 positioning the adhesive sheet AS delivered by the delivery means; a holding means 3 holding the adhesive sheet AS positioned by the positioning means 2; and a pressing means 4 pressing and sticking the adhesive sheet AS held by the holding means 3, to the adherend AH. The positioning means 2 includes a support means 2A supporting the adhesive sheet AS movably in the surface direction of the adhesive sheet AS from the adhesive layer AD side of the lower face, and a guide means 2B positioning the adhesive sheet AS into a predetermined position.

Description

  The present invention relates to a sheet sticking apparatus and sticking method for sticking an adhesive sheet having an adhesive layer to an adherend.

  Conventionally, as this type of sheet affixing device, a vacuum chuck device that adsorbs an adhesive sheet from the upper surface of the base sheet, and a positioning device that positions the adhesive sheet while adsorbed to the vacuum chuck device are provided. It is known that after positioning, the adhesive sheet is pressed and adhered to the adherend by moving the vacuum chuck device to a position facing the upper side of the adherend and moving it downward (for example, Patent Documents). 1).

  In this case, when the adhesive sheet is positioned, the suction force (chuck suction force) of the vacuum chuck device is weakened. However, if the chucking force is weakened, the adhesive sheet may fall. Even if the chucking force is weakened to such an extent that it does not fall, in the case of a low-rigidity adhesive sheet, the adhesive sheet will bend during positioning and accurate positioning will not be possible, and the adhesive sheet will not be positioned on the adherend. Will occur. Furthermore, if the adhesive sheet is attached to the adherend in a bent state, there is a problem that defective attachment such as wrinkles or bubbles due to loosening occurs.

JP-A-2-296638

  In view of the above points, the present invention is a sheet sticking apparatus and a sheet sticking method which can position an adhesive sheet without dropping or bending thereof, and prevent sticking position deviations and sticking defects such as wrinkles and bubbles. The challenge is to provide

  In order to solve the above problems, a sheet sticking device of the present invention for sticking an adhesive sheet having an adhesive layer to an adherend includes positioning means for feeding the adhesive sheet, and positioning the adhesive sheet fed by the feeding means Means, holding means for holding the adhesive sheet positioned by the positioning means, and pressing means for pressing and sticking the adhesive sheet held by the holding means to the adherend, the positioning means comprising the adhesive sheet It is characterized by comprising support means for supporting the lower surface of the adhesive sheet so as to be movable from the adhesive layer side, and guide means for positioning the adhesive sheet supported by the support means at a predetermined position.

  In the present invention, it is desirable that the support means is configured to be able to support the surface of the adhesive sheet by floating it by blowing a gas onto the adhesive layer of the adhesive sheet. Furthermore, it is desirable that the holding unit and the pressing unit are also used as a transfer unit that transfers the adhesive sheet fed from the feeding unit to the positioning unit.

  Moreover, in order to solve the said subject, the sheet | seat sticking method of this invention which sticks the adhesive sheet which has an adhesive bond layer to a to-be-adhered body is the process of extending | stretching an adhesive sheet, The positioning process of positioning the extended | stretched adhesive sheet, A step of holding the positioned adhesive sheet and a step of pressing and bonding the adhesive sheet to the adherend, and in the positioning step, the adhesive sheet is moved from the adhesive layer side of the lower surface to the surface direction of the adhesive sheet. It is characterized in that it is positioned at a predetermined position while being supported so as to be movable.

  According to the present invention, the adhesive sheet is positioned in a state where it is supported so as to be movable in the direction of the adhesive sheet from the lower side, that is, from the lower side. The adhesive sheet can be positioned without causing the sheet to fall or bend. Accordingly, it is possible to prevent a shift in the bonding position of the adhesive sheet and defective bonding such as wrinkles and bubbles.

The side view of the sheet sticking apparatus of embodiment of this invention. The perspective view of the sheet sticking apparatus of embodiment. Explanatory drawing explaining the action | operation of the sheet sticking apparatus of embodiment. The side view of the modification of a positioning means. The side view of the other modification of a positioning means.

  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. Similarly, “left”, “right”, “upper”, and “lower” are based on FIG.

  Referring to FIGS. 1 and 2, the sheet sticking apparatus of the present embodiment includes a conveyor CV as a conveying unit that conveys the adherend AH, and a feeding unit that is disposed above the conveyor CV and that feeds the adhesive sheet AS. 1, positioning means 2 positioned above the conveyor CV and below the feeding means 1, positioning the adhesive sheet AS fed by the feeding means 1, and arranged to the left of the feeding means 1, positioning A holding unit 3 that holds the adhesive sheet AS positioned by the unit 2 from the base sheet BS side, and a pressing unit 4 that presses and adheres the adhesive sheet AS held by the holding unit 3 to the adherend AH. .

  The feeding means 1 includes a feeding shaft 11 that holds the roll RS on which a large number of adhesive sheets AS are temporarily attached at intervals to the release sheet RL, and two upper and lower guide rollers 12 and 13. The release plate 14 that peels the adhesive sheet AS from the release sheet RL by folding the release sheet RL, the driving roller 15 and the nip roller 16 that sandwich the release sheet RL that has passed through the release plate 14, and the winding that winds the release sheet RL A take-up shaft 17 is provided. The drive roller 15 and the take-up shaft 17 are rotationally driven by rotational motors DM1 and DM2 as drive devices, respectively.

  The positioning means 2 positions the adhesive sheet AS movably in the surface direction of the adhesive sheet AS from the adhesive layer AD side of the lower surface and the adhesive sheet AS supported on the support means 2A at a predetermined position. Guide means 2B, and a linear motion motor LM1 as a driving device, an advance position just below the holding means 3 (position indicated by a solid line in FIG. 1) and a retreat position to the right of that (represented by a virtual line in FIG. 1) The position shown in FIG.

  The support means 2A includes a hollow disk-shaped support head 21 whose upper surface is a porous gas ejection surface 21a, and a pressure pump and a pressure tank (not shown) connected to the internal space of the support head 21 via a tube 22. It is comprised with gas supply means, such as. The gas supplied by the gas supply means is not limited to air but may be a gas such as nitrogen gas or neon gas.

The guide means includes a pin 23 on both sides in the left and right direction protruding above the support head 21 through a slit 21b formed in the support head 21, and a both sides in the front and rear direction protruding above the support head 21 through a slit 21c formed in the support head 21. It consists of pins 24.
The pins 23 on both sides in the left-right direction are provided so as to be able to approach and separate by a direct acting motor LM2 as a drive device, and the distance between the pins 23 when closest is set equal to the length in the left-right direction of the adhesive sheet AS. Has been. Similarly, the pins 24 on both sides in the front-rear direction are also provided so as to be able to approach and separate by a direct acting motor LM3 as a drive device, and the distance between the pins 24 when closest is equal to the length in the front-rear direction of the adhesive sheet AS. Is set to

  The holding means 3 is disposed at a position adjacent to the front of the peeling plate 14 and is connected to a hollow disk-like holding head 31 having a plurality of suction holes 31 a formed on the lower surface thereof and an internal space of the holding head 31 via a tube 32. The adhesive sheet AS is sucked and held from the base sheet BS side of the upper surface thereof. The pressing means 4 is constituted by a direct acting motor LM4 as a driving device that moves the holding head 31 up and down.

  Next, the operation of the sheet sticking device of this embodiment will be described. FIG. 1 shows a state before the adhesive sheet AS is fed out, and the positioning means 2 is advanced to the advanced position, and the holding head 31 is moved upward to a position where the lower surface is above the peeling plate 14. From this state, the gas supply means is driven to supply gas to the support head 21 and the feeding means 1 is operated to feed the adhesive sheet AS to the left side of the peeling plate 14 with the adhesive layer AD facing downward. As shown in FIG. 3A, the adhesive sheet AS is sucked and held by the holding head 31 from the base sheet BS side on the upper surface. In this state, there is a possibility that the adhesive sheet AS is held by the holding head 31 in a state shifted from the normal position.

  Next, the holding head 31 is moved down, and the adhesive sheet AS is transferred to the support head 21 as shown in FIG. Here, the holding means 3 constituted by the holding head 31 and the pressing means 4 constituted by the linear motion motor LM4 are also used as transfer means for transferring the adhesive sheet AS fed from the feeding means 1 to the positioning means 2 constituted by the support head 21. Will be.

  After the transfer of the adhesive sheet AS is completed, the holding head 31 is moved up in a state where the adsorption of the adhesive sheet AS by the holding head 31 is released, and the pins on the left and right sides on the support head 21 as shown in FIG. 23 and the pins 24 on both sides in the front-rear direction are moved close to each other. Thereby, the adhesive sheet AS supported by the support head 21 is positioned at a predetermined position. Next, the holding head 31 is moved down again, and the adhesive sheet AS on the support head 21 is sucked and held on the holding head 31 from the base sheet BS side on the upper surface as shown in FIG. In this state, the adhesive sheet AS is held by the holding head 31 without shifting from the normal position. The holding head 31 is dimensioned to be inserted inside the pins 23 and 24 in the positioning state. However, the dimension of the holding head 31 is made larger than this, and the pins 23 and 21 c similar to the slits 21b and 21c are formed on the lower surface thereof. You may provide the slit for avoiding interference with 24. FIG.

  Thereafter, as shown in FIG. 3E, the holding head 31 is moved upward, the pins 23 and 24 are moved away from each other, the driving of the gas supply means is stopped, and then the positioning means 2 is retracted to the retracted position. . When the sensor (not shown) detects that the adherend AH has reached the position directly below the holding head 31, the conveyor CV is temporarily stopped and the holding head 31 is moved linearly as shown in FIG. The adhesive sheet AS is pressed against and adhered to the adherend AH by being moved downward by the motor LM4. Thereafter, the holding head 31 is moved upward in a state where the adsorption of the adhesive sheet AS by the holding head 31 is released, and the positioning means 2 is advanced to the advanced position. Thus, one sheet pasting operation is completed, and thereafter the same operation as described above is repeated.

  According to this embodiment, when the adhesive sheet AS is positioned, the adhesive sheet AS is supported in a state of being floated on the support head 21 by blowing gas onto the adhesive layer AD on the lower surface of the adhesive sheet AS. The AS is supported so as to be movable in the surface direction of the adhesive sheet AS without receiving frictional resistance from the support head 21. Therefore, the adhesive sheet AS can be positioned without causing the adhesive sheet AS to drop or bend. Accordingly, it is possible to prevent improper pasting such as wrinkles and bubbles caused by a shift in the pasting position of the adhesive sheet AS with respect to the adherend AH or bending.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, the needle 25 shown in FIG. 4 that makes point contact with the adhesive layer AD on the lower surface of the adhesive sheet AS or the protrusion 26 with a sharp upper end shown in FIG. Even in this case, the adhesive sheet AS can be supported so as to be movable in the surface direction of the adhesive sheet without causing a large frictional resistance from the adhesive layer AD side on the lower surface. Note that it is desirable to apply non-adhesion treatment such as fluororesin coating or rough surface treatment to the upper ends of the needle 25 and the protrusion 26.

In the above embodiment, the support head 21 is provided with the pins 23 on both sides in the left-right direction and the pins 24 on both sides in the front-rear direction, but the adhesive sheet AS is in the front-rear direction orthogonal to the feeding direction from the peeling plate 14. Therefore, the pins 24 on both sides in the front-rear direction can be omitted. Further, one of the pins 23 on both sides in the left-right direction may be fixed to the support head 21 and the adhesive sheet AS may be positioned by the approaching operation of the other pin to the one pin.
Moreover, in the said embodiment, although the cross-sectional shape of each pin 23 and 24 is circular, non-circular shapes, such as a triangle, a quadrangle | tetragon, or more, may be sufficient, and also pin 23,24 is plate shape. It may be replaced with a body, and the point is that the adhesive sheet AS can be positioned.

  In addition, instead of the pins 23 and 24, a guide block having an inwardly inclined surface at the upper end can be erected on the peripheral edge of the upper surface of the support head 21, and the guide means 2B can be constituted by this guide block. is there. In this case, the adhesive sheet AS is guided and positioned by the inclined surface of the guide block. Further, when a hole is formed in the adhesive sheet AS, a taper pin that fits into the hole provided in the adhesive sheet AS may be provided upright on the support head 21, and the guide means 2B may be configured by this taper pin. . The hole and the taper pin may be singular or plural.

  Further, in the above embodiment, the adhesive sheet AS fed from the feeding means 1 is temporarily held by the holding head 31 and the holding head 31 is moved downward to transfer the adhesive sheet AS to the support head 21. The adhesive sheet AS fed from 1 may be dropped directly onto the support head 21.

  Furthermore, the holding means 3 may be constituted by an electrostatic chuck, and the pressing means 4 may be one that presses and adheres the adhesive sheet AS to the adherend AH by blowing out gas. .

  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.

  Further, when the holding means 3 and the pressing means 4 are also used as transfer means, the holding means 3 and the pressing means 4 can be moved in the left-right direction by a driving device, and the adhesive sheet AS located above the peeling plate 14 is used. The adhesive sheet AS may be peeled off and transferred to the positioning means 2 while moving leftward at the same speed as the feeding speed of the adhesive sheet AS from the state in which the adhesive sheet AS is held.

Further, in the above-described embodiment, the adhesive sheet AS having a two-layer structure having the adhesive layer AD on one surface of the base sheet BS is illustrated, but one layer like a double-sided adhesive sheet in which a release sheet is temporarily attached to the upper surface. The structure may be sufficient and the adhesive sheet of 3 or more layers which has another layer may be sufficient.
The shape of the adhesive sheet AS is not limited to a rectangular shape, and may be a round shape, an oval shape, or a triangle shape. In this case, the arrangement of the guide means 2B is changed according to the shape of the adhesive sheet AS.

  Furthermore, the adherend AH can be used not only for corrugated cardboard cases, resin containers, semiconductor wafers, optical disks, glass plates, steel plates, resin plates and other plate-like members, but also for members and articles of any form. It is not limited at all.

AH: adherend, AS: adhesive sheet, BS: base sheet, AD: adhesive layer, 1 ... feeding means, 2 ... positioning means, 2A ... support means, 2B ... guide means, 21 ... support head (support means) ), 23, 24... Pin (component of the guide means), 3... Holding means, 4.

Claims (4)

In a sheet sticking apparatus for sticking an adhesive sheet having an adhesive layer to an adherend,
A feeding means for feeding out the adhesive sheet;
Positioning means for positioning the adhesive sheet fed by the feeding means;
Holding means for holding the adhesive sheet positioned by the positioning means;
A pressing unit that presses and adheres the adhesive sheet held by the holding unit to the adherend,
The positioning means includes support means for supporting the adhesive sheet so as to be movable in the surface direction of the adhesive sheet from the adhesive layer side of the lower surface, and guide means for positioning the adhesive sheet supported by the support means at a predetermined position. The sheet sticking apparatus characterized by the above-mentioned.   2. The sheet sticking apparatus according to claim 1, wherein the supporting means is configured to be able to support the surface of the adhesive sheet by floating the gas by blowing gas onto the adhesive layer of the adhesive sheet.   3. The sheet sticking apparatus according to claim 1, wherein the holding unit and the pressing unit are also used as a transfer unit that transfers the adhesive sheet fed from the feeding unit to the positioning unit. In the sheet sticking method of sticking an adhesive sheet having an adhesive layer to an adherend,
A step of feeding the adhesive sheet;
A positioning step for positioning the delivered adhesive sheet;
Holding the positioned adhesive sheet;
A step of pressing and adhering the adhesive sheet to the adherend,
In the positioning step, the adhesive sheet is positioned at a predetermined position while being supported so as to be movable in the surface direction of the adhesive sheet from the adhesive layer side of the lower surface.

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