JP5820214B2 - Sheet sticking device and sheet sticking method - Google Patents

Description

  The present invention relates to a sheet sticking apparatus and a sticking method for sticking an adhesive sheet having an adhesive layer and a sheet member adhered or temporarily attached to one surface of the adhesive layer to an adherend.

  Conventionally, as this kind of sheet sticking device, a vacuum chuck device for adsorbing an adhesive sheet from the sheet member side on the upper surface and a positioning device for positioning the adhesive sheet while adsorbed to the vacuum chuck device are used to position the adhesive sheet. After that, the adhesive sheet is pressed and stuck 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 Document 1). reference).

  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 device and a sheet sticking method that can position an adhesive sheet without dropping or bending thereof, and prevent sticking position shifts and sticking defects such as wrinkles and bubbles. The challenge is to provide

In order to solve the above problems, the sheet sticking apparatus of the present invention for sticking an adhesive sheet having an adhesive layer and a sheet member adhered or temporarily attached to one surface of the adhesive layer to an adherend is A feeding means for feeding out the 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 from the sheet member side; and an adhesive sheet held by the holding means A pressing unit that presses and adheres to the adherend, and the positioning unit includes a support head that supports the adhesive sheet so that the adhesive sheet can be moved from below in the surface direction of the adhesive sheet with the sheet member side down. and means, and guide means for positioning the adhesive sheet that is supported by the support means in position, said holding means, adsorbing an adhesive sheet to the support head Has a suction means for lifting said positioning means, characterized by positioning the adhesive sheet in a state of stopping the suction of the adhesive sheet by the suction means.

  In the present invention, the support means preferably includes a support head that faces the surface of the adhesive sheet on the sheet member side, and in this case, the guide means is preferably provided on the support head. Furthermore, it is preferable that the support head includes a gas blowing unit capable of supporting the surface of the adhesive sheet by floating the gas by blowing the gas onto the sheet member of the adhesive sheet.

  The support head is preferably used also as the holding means. Further, when the support head includes the gas blowing means, it is desirable that the gas blowing means is also used as the pressing means.

Further, in order to solve the above problems, the sheet sticking method of the present invention for sticking an adhesive sheet having an adhesive layer and a sheet member bonded or temporarily attached to one surface of the adhesive layer to an adherend is provided. A step of feeding out the adhesive sheet, a positioning step of positioning the fed-out adhesive sheet, a step of adsorbing and holding the positioned adhesive sheet from the sheet member side, and a step of pressing and sticking the adhesive sheet to the adherend The positioning step is performed in a state where adsorption of the adhesive sheet is stopped, and the adhesive sheet is supported so as to be movable in the surface direction of the adhesive sheet from below with the sheet member side down. However, the adhesive sheet is positioned at a predetermined position.

  According to the present invention, since the adhesive sheet is positioned while being supported so as to be movable in the surface direction of the adhesive sheet from below, the adhesive sheet does not fall or bend due to the chucking force as in the conventional example. The adhesive sheet can be positioned. Accordingly, it is possible to prevent a shift in the bonding position of the adhesive sheet and defective bonding such as wrinkles and bubbles.

  Further, if the guide means is provided in the support head constituting the support means of the positioning means, the mounting frame for the guide means becomes unnecessary, and the structure can be simplified. Furthermore, if the supporting head is also used as the holding means, the positioning means and the holding means can be integrated, and the structure can be further simplified. Further, if the gas blowing means provided in the support head is also used as the pressing means, the structure can be further simplified, which is advantageous.

The side view of the sheet sticking apparatus of 1st Embodiment of this invention. The perspective view of the support head provided in the sheet sticking apparatus of 1st Embodiment. Explanatory drawing explaining the action | operation of the sheet sticking apparatus of 1st Embodiment. The side view of the sheet sticking apparatus of 2nd Embodiment of this invention. Explanatory drawing explaining the action | operation of the sheet sticking apparatus of 2nd Embodiment.

  Hereinafter, with reference to the drawings, a sheet sticking apparatus for sticking an adhesive sheet AS having an adhesive layer AD and a base sheet BS as a sheet member adhered to one surface of the adhesive layer AD to an adherend AH An embodiment to which the present invention is applied will be described. 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.

  With reference to FIG. 1, the sheet sticking device of this embodiment includes a conveyor CV as a conveying unit that conveys the adherend AH, a feeding unit 1 that is disposed below the conveyor CV, and that feeds the adhesive sheet AS. Positioning means 2 for positioning the adhesive sheet AS fed by the feeding means 1, holding means 3 for holding the adhesive sheet AS positioned by the positioning means 2 from the base sheet BS side, and adhesion held by the holding means 3 Pressing means 4 for pressing and sticking the sheet AS to the adherend AH.

  The conveyor CV is configured to transport the adherend AH while supporting the both sides of the bottom surface in the front-rear direction, and the middle portion in the front-rear direction of the bottom surface of the adherend AH is exposed below the conveyor CV. Then, the adhesive sheet AS is attached to the intermediate part of the bottom surface of the adherend AH in the front-rear direction from below.

  The feeding means 1 is disposed in the vicinity of the lower surface of the conveyor CV and the feeding shaft 11 that holds the original fabric RS on which a large number of adhesive sheets AS are temporarily attached at intervals to the peeling sheet RL. A release plate 12 that peels the adhesive sheet AS from the release sheet RL by folding the sheet RL, guide rollers 13 and 14 disposed between the feeding shaft 11 and the release plate 12, and a release sheet that has passed through the release plate 12. A driving roller 15 and a nip roller 16 that sandwich the RL, and a winding shaft 17 that winds the release sheet RL are 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 is bonded to the supporting means 2A for supporting the adhesive sheet AS fed by the feeding means 1 so as to be movable in the surface direction of the adhesive sheet AS from below with the base sheet BS side facing down. It comprises guide means 2B for positioning the sheet AS at a predetermined position.

  The support means 2A includes a hollow disk-like support head 21 facing the surface of the adhesive sheet AS fed from the release plate 12 on the base sheet BS side, and an additional space connected to the internal space of the support head 21 via a tube 22a. It is comprised with gas supply means 22, such as a pressure pump and a pressurized tank. A large number of air holes 21a communicating with the internal space are formed on the upper surface of the support head 21, and the gas supplied from the gas supply means 22 is blown onto the base sheet BS of the adhesive sheet AS through the air holes 21a. A blowing means is configured. The gas supplied by the gas supply means 22 is not limited to air but may be a gas such as nitrogen gas or neon gas.

  The guide means 2B is a drive device that moves the pins 23, 24 close to and away from the left and right pins 23, 24 protruding above the support head 21 through a slit 21b (see FIG. 2) formed in the support head 21. The linear motors LM1 and LM2 are configured. The distance between the pins 23 and 24 when the pins 23 and 24 are brought closest to each other is set to be equal to the length in the left-right direction of the adhesive sheet AS. Each of the pins 23 and 24 is connected to a gas supply means 22 by being connected to a vertically movable pin, for example, a cushion pin which is urged by an elastic member such as a spring or rubber (not shown) and can be expanded and contracted in the vertical direction. It consists of a pin that rises when the means 22 is activated.

  The holding means 3 includes the support head 21 and a decompression means 31 such as a vacuum pump or a vacuum ejector connected to the internal space of the support head 21 via a tube 31a. When the decompression means 31 is operated, negative pressure acts on the vent holes 21a of the support head 21, and the adhesive sheet AS is sucked and held on the support head 21 from the base sheet BS side.

  The pressing means 4 is composed of a linear motion motor LM3 as a drive device that moves the support head 21 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 support head 21 is moved downward to a position where the upper surface is below the peeling plate 12. In this state, the gas supply means 22 is operated to blow out gas from the vent holes 21a of the support head 21, and the supply means 1 is operated to supply the adhesive sheet AS to the left side of the peeling plate 12. Thereby, as shown in FIG. 3A, the adhesive sheet AS is fed onto the support head 21 with the base sheet BS side down. Then, the adhesive sheet AS is supported in a state where it floats on the support head 21 by blowing gas onto the base sheet BS.

  Next, with the adhesive sheet AS supported on the support head 21 in a floating state, the pins 23 and 24 are moved closer as shown in FIG. Thereby, the adhesive sheet AS is positioned at a predetermined position. Next, the gas supply means 22 is stopped and the decompression means 31 is operated, and the positioned adhesive sheet AS is sucked and held from the base sheet BS side to the support head 21 as it is as shown in FIG. After that, the pins 23 and 24 are moved apart.

  Next, when it is detected by an unillustrated sensor that the adherend AH has reached a position directly above the support head 21, the conveyor CV is temporarily stopped and the support head 21 is moved as shown in FIG. The adhesive sheet AS is pressed and pasted to the bottom surface of the adherend AH by being moved up by the linear motor LM3. At this time, the pins 23 and 24 abut against the bottom surface of the adherend AS and contract. Thereafter, the support head 21 is moved downward in a state where the decompression means 31 is stopped and the adsorption of the adhesive sheet AS is released. Thus, one sheet pasting operation is completed, and thereafter the same operation as described above is repeated.

  According to the present 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 base sheet BS below the adhesive sheet AS. The sheet 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 air bubbles caused by displacement of the adhesive sheet AS with respect to the adherend AH and bending. Furthermore, in this embodiment, since the support head 21 constituting the support means 2A of the positioning means 2 is also used as the holding means 3, the positioning means 2 and the holding means 3 are integrated, and the structure is simple. Can be achieved.

  Next, a second embodiment of the present invention shown in FIG. 4 will be described. In the second embodiment, the feeding means 1 and the positioning means 2 are arranged above the conveyor CV, and the adhesive sheet AS is attached to the upper surface of the adherend AH on the conveyor CV. Since the basic configuration of the feeding means 1 and the positioning means 2 of the second embodiment is not particularly different from that of the first embodiment, the same members and parts as those described above are denoted by the same reference numerals as those described above. Description is omitted.

  The difference of the second embodiment from the first embodiment is that the linear motor LM3 as the pressing means 4 that moves the support head 21 up and down is eliminated, and the bracket 21c attached to the lower surface of the support head 21 is used as a drive device. The rotation motor DM3 is connected so that the support head 21 can be turned upside down. Moreover, in 2nd Embodiment, the pins 23 and 24 which are guide means are comprised with the simple pin which does not move to an up-down direction.

  In the second embodiment, the support head 21 is bonded to the release plate 12 by the same operation as shown in FIGS. 3A to 3C in the state in which the support head 21 is in the upward posture with the formation surface of the vent hole 21a facing upward. The feeding out of the sheet AS, the positioning in a state where the adhesive sheet AS is supported on the support head 21 in a floating state, and the suction holding of the adhesive sheet AS by the support head 21 after the positioning are performed.

  Next, as shown in FIG. 5A, the support head 21 is inverted to a downward posture in which the formation surface of the vent hole 21a faces downward. When the adherend AH reaches the position just below the support head 21, the conveyor CV is temporarily stopped, and the decompression means 31 is stopped and the gas supply means 22 is operated as shown in FIG. The adhesive sheet AS is pressed against the upper surface of the adherend AH with the gas blown out from the pores 21a and pasted.

  In the second embodiment as well, as in the first embodiment, since the adhesive sheet AS is positioned while floatingly supported on the support head 21 with the base sheet BS side down, the adhesive sheet AS is dropped or bent. Therefore, it is possible to position the adhesive sheet AS without causing the occurrence of misalignment of the adhesive sheet AS with respect to the adherend AH, and to prevent defective sticking such as wrinkles and bubbles caused by bending. Furthermore, in the second embodiment, not only the positioning means 2 and the holding means 3 are integrated, but also the gas blowing means constituted by the vent holes 21a of the support head 21 is used to attach the adhesive sheet AS to the adherend AH. The pressing means 4 for pressing and sticking is also used, and the structure can be further simplified.

  In the second embodiment, when the support head 21 is rotated 90 ° from the upward posture, the arrangement position of the support head 21 is set so that the formation surface of the vent hole 21a faces the side surface of the adherend AH. For example, the adhesive sheet AS can be attached to the side surface of the adherend AH.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above-described embodiment, the pressure reducing means 31 is provided so that the adhesive sheet AS can be sucked and held on the support head 21. Alternatively, the electrodes constituting the electrostatic chuck may be embedded so that the adhesive sheet AS can be held on the support head 21 by electrostatic attraction.

  Further, it is possible to provide a holding head constituting the holding means 3 separately from the support head 21 without using the support head 21 as the holding means 3. That is, a holding head that can enter from the side is provided between the adhesive sheet AS that is levitated and supported on the support head 21 and the support head 21, and the adhesive sheet AS that is positioned on the support head 21 is used as the base sheet BS. It can also be held by the holding head from the side. In this case, on the upper surface of the support head 21, a needle that makes point contact with the lower base sheet BS of the adhesive sheet AS or a projection with a sharp upper end is provided, and the adhesive sheet AS is attached to the adhesive sheet AS from below with these needle and projection. You may make it support so that a movement in the surface direction is possible. When the needles and protrusions are provided in a protruding manner, the holding head is formed in a comb shape so as not to interfere with the needles and protrusions.

  Furthermore, in the above embodiment, the pins 23 and 24 and the linear motion motors LM1 and LM2 constituting the guide means 2B are provided on the support head 21, but an attachment frame for the guide means 2B separated from the support head 21 is provided. The pins 23 and 24 and the direct acting motors LM1 and LM2 can be provided on the mounting frame. However, in order to simplify the structure, the above embodiment that does not require the mounting frame for the guide means 2B is more advantageous.

Moreover, in the said embodiment, although both the pins 23 and 24 of the left-right direction both sides are movable, you may make it fix one side and make the other pin approach and separate toward one pin. Further, the adhesive sheet AS fed from the peeling plate 12 hardly causes a positional deviation in the front-rear direction orthogonal to the feeding direction, but when there is a concern about the positional deviation in the front-rear direction, In addition to the pins 23 and 24 on both sides, pins located on both sides in the front-rear direction may be provided to position the adhesive sheet AS in the left-right direction and the front-rear direction.
Moreover, in the said embodiment, although the cross-sectional shape of each pin 23 and 24 is circular, it may be non-circular, such as a triangle, a tetragon | quadrangle, and the polygon beyond it, Furthermore, pin 23 and 24 are approached and spaced apart. It may be replaced with a pair of operable plate-like bodies, 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.

  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.

Furthermore, in the said embodiment, although adhesive layer AS which has adhesive layer AD and base material sheet | seat BS which is a sheet | seat member adhere | attached on one surface of the said adhesive layer AD was illustrated, double-sided adhesive sheet The release sheet as a sheet member may be temporarily attached to one surface thereof, or an adhesive sheet having three or more layers having other layers may be used.
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 material sheet (sheet member), AD: adhesive layer, 1 ... feeding means, 2 ... positioning means, 2A ... support means, 2B ... guide means, 21 ... support Head (components of support means and holding means), 21a ... vent (gas blowing means), 22 ... gas supply means (components of support means), 23, 24 ... pins (components of guide means), LM1, LM2 ... linear motion motor (component of guide means), 3 ... holding means, 31 ... pressure reducing means (component of holding means), 4 ... pressing means, LM3 ... linear motion motor (component of pressing means).

Claims (2)

In a sheet sticking apparatus for sticking an adhesive sheet having an adhesive layer and a sheet member adhered or temporarily attached to one surface of the 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 from the sheet member side;
A pressing unit that presses and adheres the adhesive sheet held by the holding unit to the adherend,
The positioning unit includes a support unit having a support head that supports the adhesive sheet so that the adhesive sheet can be moved in the surface direction of the adhesive sheet from below with the sheet member side down, and the adhesive sheet supported by the support unit at a predetermined position. and a guide means for positioning the,
The holding means has an adsorption means for adsorbing and holding an adhesive sheet on the support head,
The sheet sticking apparatus , wherein the positioning means positions the adhesive sheet in a state where the suction of the adhesive sheet by the suction means is stopped . In the sheet sticking method of sticking an adhesive sheet having an adhesive layer and a sheet member adhered or temporarily attached to one surface of the adhesive layer to an adherend,
A step of feeding the adhesive sheet;
A positioning step for positioning the delivered adhesive sheet;
A step of adsorbing and holding the positioned adhesive sheet from the sheet member side;
A step of pressing and adhering the adhesive sheet to the adherend,
The positioning step is performed in a state where adsorption of the adhesive sheet is stopped, and the adhesion is performed while supporting the adhesive sheet movably in the surface direction of the adhesive sheet from below with the sheet member side down. A sheet sticking method comprising positioning a sheet at a predetermined position.

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