JP7390124B2 - Sheet pasting device and sheet pasting method - Google Patents

Description

The present invention relates to a sheet pasting device and a sheet pasting method.

The release sheet to which the adhesive sheet has been temporarily attached is folded in the middle of being fed out, and when the adhesive sheet is peeled off from the release sheet at this folded portion, the leading end in the feeding direction of the adhesive sheet that was not peeled off at the folded portion is peeled from the release sheet. A sheet pasting device equipped with a peeling assisting means is known (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2012-176775

In the conventional sheet peeling device 1 (sheet pasting device) described in Patent Document 1, if the adhesive sheet S (adhesive sheet) cannot be peeled off at the folded part of the release sheet RL (release sheet), the urging means 4 (peeling aid) (Measures) is configured to reduce the folding angle of the release sheet, so if the adhesive sheet is strongly adhered to the release sheet or the elastic restoring force of the adhesive sheet is weak, peeling that makes it impossible to separate the adhesive sheet from the release sheet may occur. Defects may occur.

An object of the present invention is to provide a sheet pasting device and a sheet pasting method that can reduce the occurrence of peeling defects as much as possible.

The present invention employs the configuration described in the claims.

According to the present invention, the peeling auxiliary member supported by the adherend support means contacts the leading end in the feeding direction of the adhesive sheet that has not been peeled off from the release sheet at the folded portion, and moves the leading end in the feeding direction from the release sheet. Because the adhesive sheet peels off, even if the adhesive sheet is strongly adhered to the release sheet or the elastic restoring force of the adhesive sheet is weak, the leading end of the adhesive sheet in the feeding direction can be peeled off from the release sheet. , the occurrence of peeling defects can be reduced as much as possible.
Further, if the peeling means is provided with a recessed portion, the peeling auxiliary means can be reliably brought into contact with the leading end of the adhesive sheet in the feeding direction.
Furthermore, if the recess closing means is provided, it is possible to prevent wrinkles or scratches from being formed on the release sheet or the adhesive sheet due to the recess.

(A) to (E) are explanatory diagrams of a sheet pasting device according to an embodiment of the present invention. (F) to (H) are explanatory diagrams of modified examples.

Embodiments of the present invention will be described below based on the drawings.
Note that the X-axis, Y-axis, and Z-axis in this embodiment are orthogonal to each other, and the X-axis and Y-axis are axes within a predetermined plane, and the Z-axis is an axis perpendicular to the predetermined plane. do. Furthermore, in this embodiment, when viewing from the front in FIG. 1, which is parallel to the Y-axis, when a direction is indicated without specifying the figure, "top" is "down" in the direction of the arrow on the Z-axis. is the opposite direction, "left" is the arrow direction of the X-axis, "right" is the opposite direction, "front" is the front direction in FIG. 1 parallel to the Y-axis, and "back" is the opposite direction. Note that since FIGS. 1(B) to 1(H) are views viewed from the same direction as FIG. 1(A), arrows indicating directions are omitted.

The sheet pasting device EA of the present invention includes a feeding means 10 that feeds out a raw fabric RS having an adhesive sheet AS temporarily attached to one surface of a release sheet RL, and a release sheet RL whose other surface is inside. a peeling means 20 that folds back the release sheet RL so that the release sheet RL is folded back and peels the adhesive sheet AS from the release sheet RL at the folded part RL1 of the release sheet RL; and an adhesive sheet AS peeled from the release sheet RL by the peeling means 20. A pressing roller 30 as a pressing means for pressing and pasting onto the adherend WK, a support table as an adherend supporting means supporting the adherend WK with respect to the feeding means 10, the peeling means 20 and the pressing roller 30. 42, and a peeling auxiliary means 50 that peels off the leading end ASF of the adhesive sheet AS in the feeding direction, which has not been peeled off from the release sheet RL at the folded portion RL1, from the release sheet RL.

The feeding means 10 is supported by a support roller 11 that supports the original web RS, a guide roller 12 that guides the original web RS, and an output shaft (not shown) of a rotating motor 13A as a driving device, and is peeled off by a pinch roller 13B. During automatic operation of the sheet applicator EA, which is supported by the output shaft of a drive device (not shown), and the drive roller 13 that pinches the sheet RL, a predetermined amount is always applied to the release sheet RL that exists between the pinch roller 13B. A collecting roller 14 as a collecting means that applies tension and collects the release sheet RL, an imaging means such as a camera or a projector, an optical sensor, or an ultrasonic sensor that detects the trailing edge ASR of the leading adhesive sheet AS. Detection means 15 such as various sensors are provided.

The peeling means 20 includes a peeling plate 21 having a peeling edge 21A formed with a recess 21B through which the peeling auxiliary means 50 can pass, and a recess closing means 22 for closing the recess 21B.
The recess closing means 22 includes a direct-acting motor 22A as a driving device supported by the peeling plate 21, and a recess closing member 22C supported by its output shaft 22B, and the leading end ASF of the adhesive sheet AS in the feeding direction is connected to the recess. When it is peeled off from the release sheet RL at 21B, it closes the recess 21B. When the recess 21B is closed, the peeling edge 21A separated by the recess 21B in the AD arrow view becomes a continuous straight line.

The moving means 40 includes a linear motor 41 as a driving device, and a support table 42 that is supported by a slider 41A thereof and has a holding surface 42A that can be held by suction by a depressurizing means (holding means), not shown, such as a depressurizing pump or a vacuum ejector. It is equipped with

The peeling auxiliary means 50 is supported by the support table 42, contacts the leading end ASF in the feeding direction of the adhesive sheet AS that has not been peeled off from the release sheet RL at the folded portion RL1, and peels the leading end ASF in the feeding direction from the release sheet RL. A peeling assisting member 51 is provided. Note that the peeling auxiliary member 51 of this embodiment is made of an elastic member such as rubber or resin.

The operation of the above sheet pasting device EA will be explained.
First, the user of the sheet applicator EA (hereinafter also simply referred to as the "user") sets the sheet applicator EA in which each member is placed at the initial position shown by the solid line in FIG. After setting the original fabric RS as described above, a signal to start automatic operation is inputted via an operation means (not shown) such as an operation panel or a personal computer. Then, the feeding means 10 drives the rotation motor 13A to feed out the original fabric RS, and when the detection means 15 detects that the trailing edge ASR of the leading adhesive sheet AS has reached a predetermined position, the rotation motor 13A Stops driving. At this time, normally, the leading end portion ASF in the feeding direction of the first adhesive sheet AS is peeled off for a predetermined length from the release sheet RL at the folded portion RL1, as shown by the two-dot chain line in FIG. 1(B). If the adhesive sheet AS is strongly adhered to the release sheet RL, or if the elastic restoring force of the adhesive sheet AS is weak, the adhesive sheet AS may not be peeled off from the release sheet RL at the folded portion RL1, as shown by the solid line in the figure. .

Next, when the user or a transport means (not shown) such as an articulated robot or a belt conveyor places the adherend WK on the holding surface 42A as shown by the solid line in FIG. The depressurizing means is driven to start suctioning and holding the adherend WK on the holding surface 42A. Thereafter, the peeling means 20 drives the direct-acting motor 22A to move the recess closing member 22C to release the recess 21B from the recess closing member 22C, as shown in FIG. 1(C), and then the moving means 40 drives a linear motor 41 to move the support table 42 to the left. Here, if the tip end ASF in the feeding direction of the first adhesive sheet AS is not peeled off from the release sheet RL at the folded part RL1, as shown in FIG. 1(C), the adhesive sheet AS folded back together with the release sheet RL The peeling auxiliary member 51 comes into contact with the tip ASF in the feeding direction, and peels the tip ASF in the feeding direction from the release sheet RL while being elastically deformed. Note that the peeling auxiliary member 51 is configured to push up the release sheet RL and pass through the recess 21B formed in the peeling edge 21A.

Next, when the peeling auxiliary member 51 passes through the recess 21B, the peeling means 20 drives the direct-acting motor 22A to return the recess closing member 22C to the initial position and remove the recess 21B. block. Thereafter, the support table 42 continues to move to the left, and when the adherend WK reaches a predetermined position, the feeding means 10 drives the rotary motor 13A to match the moving speed of the adherend WK. Unroll the original RS. As a result, the adhesive sheet AS is peeled off from the release sheet RL, and the adhesive sheet AS peeled off from the release sheet RL is pressed onto the upper surface of the adherend WK by the pressure roller 30, as shown in FIG. 1(E). It will be affixed.

Next, when the detection means 15 detects that the trailing edge ASR of the next adhesive sheet AS following the first adhesive sheet AS has reached a predetermined position, the feeding means 10 stops driving the rotation motor 13A. Thereafter, when the adherend WK to which the entire adhesive sheet AS is attached reaches a predetermined position to the left of the pressure roller 30, the moving means 40 stops driving the linear motor 41, and then stops driving the pressure reducing means (not shown). , the adsorption and holding of the adherend WK on the holding surface 42A is released. Next, when the user or a conveying means (not shown) removes the adherend WK to which the adhesive sheet AS is attached from the support table 42 and conveys it to the next process, the moving means 40 drives the linear motor 41, and the support table 42 is returned to the initial position, and the same operation as above is repeated thereafter.

According to the embodiment described above, the peeling auxiliary member 51 supported by the support table 42 contacts the leading end ASF in the feeding direction of the adhesive sheet AS that has not been peeled from the release sheet RL at the folded portion RL1, and Since the direction leading edge ASF is peeled off from the release sheet RL, even if the adhesive sheet AS is strongly adhered to the release sheet RL or the elastic restoring force of the adhesive sheet AS is weak, the adhesive sheet AS The leading end portion ASF in the feeding direction can be peeled off from the release sheet RL, and occurrence of peeling defects can be reduced as much as possible.

The means and steps in the present invention are not limited in any way as long as they can perform the operations, functions, or steps described with respect to the means and steps; It is not limited to the process at all. For example, as long as the feeding means is capable of feeding out a raw material with an adhesive sheet temporarily attached to one side of a release sheet, any feeding means can be used as long as it is within the technical scope of the application in light of the common general knowledge at the time of filing. There is no limitation (other means and steps are the same).

The feeding means 10 forms a cut in a closed loop shape or in the entire width direction of the short dimension in the band-shaped adhesive sheet base temporarily attached to the release sheet RL, so that a predetermined area partitioned by the cut is bonded. The original fabric made into sheet AS may be fed out, or an original fabric in which a band-shaped adhesive sheet base material is temporarily attached to a release sheet RL may be used, and the adhesive sheet base material may be cut in a closed loop or across the short width direction. A cut may be formed by a cutting means, and a predetermined area partitioned by the cut may be used as the adhesive sheet AS, or a strip-shaped adhesive sheet base material may be attached to the adherend WK, or the adhesive sheet AS may be When peeling from the release sheet RL, the torque of the rotary motor 13A may be controlled so that a predetermined tension is applied to the raw material RS. The raw fabric RS or release sheet RL may be supported or guided by a shaped member or a shaft member, or the raw fabric RS may be supported by fan-folding without being wound, or the raw fabric RS may be supported by fan-folding without being wound. The release sheets RL may be collected by fan-folding the sheets RL without winding them or cutting them into pieces with a shredder or the like, or simply collecting the release sheets RL without winding them or fan-folding them. Alternatively, the release sheet RL may not be collected.

The peeling means 20 may employ a peeling roller, and in this case, the recess 21B can be an annular groove extending in the rotation direction.
The width of the recess 21B on the peeling edge 21A side may be set larger than the width on the upstream side in the feeding direction of the raw fabric RS, or the width on the peeling edge 21A side may be set to be larger than the width on the upstream side in the feeding direction of the raw fabric RS. The width on the peeling edge 21A side and the width on the upstream side in the feeding direction of the raw fabric RS may be set to be the same width, or the sheet pasting device EA of the present invention may It may or may not be provided.
The peeling means 20 includes an imaging means such as a camera or a projector that detects whether the adhesive sheet AS is peeled from the release sheet RL at the folded portion RL1 or not, and various sensors such as an optical sensor or an ultrasonic sensor. Peeling detection means such as the following may be employed. In this case, for example, only when the peeling detection means detects that the adhesive sheet AS is not peeled from the release sheet RL at the folded portion RL1, the recess 21B is unblocked by the recess closing member 22C. It can be configured as follows.
The recess closing means 22 may or may not be included in the sheet pasting apparatus EA of the present invention.

The pressing means is supported by the output shaft of a direct-acting motor as a driving device, and holds the adhesive sheet AS with a holding member that can be sucked and held by a decompression means (not shown) such as a decompression pump or a vacuum ejector, and is held by the holding member. The adhesive sheet AS may be pressed and attached to the adherend WK, or a driving device may be provided as a pressing member contact/separation means for moving the pressing roller 30 toward and away from the adherend WK, thereby reducing stress on the adherend WK. The pressure roller 30 may be prevented from being applied or damaged, and the means for moving the pressure roller 30 manually other than a driving device may be used as the means for bringing the pressure member into contact with and separating it.

The moving means 40 may move the feeding means 10, the peeling means 20, and the pressing roller 30 without or while moving the support table 42.

The peeling auxiliary means 50 employs a linear member such as a brush or brush as shown in FIG. 1(F) as a peeling auxiliary member 51, or a hook or a bending member as shown in FIG. 1(G). or a rotating member such as a roller or a rotating brush as shown in FIG. However, the peeling auxiliary member 51 may be made of a member that cannot be elastically deformed, or the peeling auxiliary member 51 may be used to tear the release sheet RL and peel the leading end ASF of the adhesive sheet AS in the feeding direction from the release sheet RL. You may.
The peeling auxiliary means 50 may be provided with a driving device as a peeling auxiliary member moving means for moving the peeling auxiliary member 51. In this case, for example, when the support table 42 is normally moved to the left, the peeling auxiliary member 51 is retracted to a position where it does not come into contact with either the adhesive sheet AS or the release sheet RL, and the peeling detection means described above detects the separation. Therefore, only when it is detected that the adhesive sheet AS is peeled from the release sheet RL at the folded portion RL1, the peeling auxiliary member 51 is moved, and the adhesive sheet AS that has not been peeled from the release sheet RL at the folded portion RL1 is removed. The separation assisting member 51 can be configured to abut against the distal end ASF in the feeding direction.

The sheet applying device EA may be placed upside down or placed sideways to apply the adhesive sheet AS to the adherend WK.

The materials, types, shapes, etc. of the adhesive sheet AS and the adherend WK in the present invention are not particularly limited. For example, the adhesive sheet AS may have a circular shape, an oval shape, a polygonal shape such as a triangle or a square shape, or other shapes, or may have an adhesive form such as pressure-sensitive adhesiveness or heat-sensitive adhesiveness. When a heat-sensitive adhesive sheet AS is used, the adhesive sheet AS may be bonded by an appropriate method such as providing a heating means such as an appropriate coil heater or a heating side of a heat pipe for heating the adhesive sheet AS. In addition, such adhesive sheets AS include, for example, single-layer adhesive sheets, those with an intermediate layer between the base material and the adhesive layer, and those with three layers, such as those with a cover layer on the top surface of the base material. In addition to the above, it may also be a so-called double-sided adhesive sheet that allows the base material to be peeled off from the adhesive layer, and the double-sided adhesive sheet may have a single layer or multiple intermediate layers. , may be a single layer without an intermediate layer or a multilayer. Examples of adherends WK include foods, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, circuit boards, information recording substrates such as optical disks, glass plates, steel plates, ceramics, wood plates, resins, etc. The object may be a single object or a composite formed of two or more of them, and members or articles of any form can also be targeted. Note that the adhesive sheet AS can be used for any purpose such as an information label, a decorative label, a protective sheet, a dicing tape, a die attach film, a die bonding tape, a recording layer forming resin sheet, etc. It may be a sheet, film, tape, etc.

The driving equipment in the above embodiment includes a rotary motor, a direct-acting motor, a linear motor, a single-axis robot, an electric equipment such as an articulated robot with joints of two or three or more axes, an air cylinder, a hydraulic cylinder, and a rodless cylinder. Actuators such as cylinders and rotary cylinders can be used, and a direct or indirect combination of these can also be used.
In the above embodiment, when a rotating member such as a roller is employed, a driving device for rotationally driving the rotating member may be provided, or the surface of the rotating member or the rotating member itself may be made of deformable material such as rubber or resin. It may be made of a member, the surface of the rotating member or the rotating member itself may be made of a member that does not deform, or other members such as rotating or non-rotating shafts or blades may be used instead of the roller. Alternatively, if a pressing device such as a pressing roller or a pressing head or a pressing member that presses the object to be pressed is used, rollers, round bars, blades can be used in place of or in combination with the examples exemplified above. It is also possible to use materials such as rubber, resin, sponge, etc., or to apply pressure by blowing air, gas, etc., or to press the material using deformable materials such as rubber or resin. It may be composed of a member that does not deform, or if a peeling means such as a peeling plate or a peeling roller or a peeling member that peels off the object to be peeled is used, the above-mentioned example may be used. Instead of or in combination with the material, members such as plate-shaped members, round bars, rollers, etc. may be adopted, and the material to be peeled off may be made of deformable members such as rubber or resin. Alternatively, if something that supports (holds) the supported member (held member), such as a supporting (holding) means or a supporting (holding) member, is used, a mechanical chuck or chuck cylinder may be used. A configuration in which the supported member is supported (held) by gripping means such as Coulomb force, adhesive (adhesive sheet, adhesive tape), adhesive (adhesive sheet, adhesive tape), magnetic force, Bernoulli adsorption, suction adsorption, drive equipment, etc. Alternatively, if a cutting means or a cutting member that cuts the member to be cut or forms a cut or a cutting line in the member to be cut is employed, instead of the above-mentioned examples, Alternatively, use a cutter blade, laser cutter, ion beam, thermal power, heat, water pressure, heating wire, spraying of gas or liquid, etc., or use a combination of appropriate drive equipment. The cutting may be performed by moving the object to be cut.

EA Sheet pasting device 10 Feeding means 20 Peeling means 21B Recess 22 Recess closing means 30 Pressing roller (pressing means)
40 Moving means 42 Support table (adherent supporting means)
50 Peeling auxiliary means 51 Peeling auxiliary member AS Adhesive sheet ASF Leading end in feeding direction RL Peeling sheet RL1 Folded part RS Original fabric

Claims (4)

a feeding means for feeding out a raw fabric having an adhesive sheet temporarily attached to one side of a release sheet;
a peeling means for folding the release sheet fed out by the feeding means so that the other surface of the release sheet faces inside, and peeling the adhesive sheet from the release sheet at the folded portion of the release sheet;
a pressing means for pressing and pasting the adhesive sheet peeled from the release sheet by the peeling means onto an adherend;
a moving means for relatively moving the adherend support means supporting the adherend with respect to the feeding means, the peeling means, and the pressing means;
comprising a peeling auxiliary means for peeling a tip end portion of the adhesive sheet in the feeding direction that has not been peeled from the release sheet at the folded portion from the release sheet;
The peeling auxiliary means is supported by the adherend support means, contacts the leading end in the feeding direction of the adhesive sheet that has not been peeled off from the release sheet at the folded portion, and removes the leading end in the feeding direction from the peeling sheet. A sheet pasting device comprising a peeling auxiliary member that peels off. The sheet pasting device according to claim 1, wherein the peeling means includes a recess through which the peeling auxiliary means can pass. 3. The sheet pasting device according to claim 2, wherein the peeling means includes a recess closing means for closing the recess. a feeding step of feeding out the original fabric with the adhesive sheet temporarily attached to one side of the release sheet using feeding means;
a peeling step of folding back the release sheet with a peeling means so that the other surface of the release sheet fed out with the feeding means faces inside, and peeling the adhesive sheet from the release sheet at the folded portion of the release sheet;
a pressing step of pressing and pasting the adhesive sheet, which has been peeled off from the release sheet by the peeling means, onto an adherend by a pressing means;
a moving step of relatively moving the adherend support means that supported the adherend with respect to the feeding means, the peeling means, and the pressing means;
carrying out a peeling auxiliary step of peeling the leading end portion of the adhesive sheet in the feeding direction that has not been peeled off from the release sheet at the folded portion from the release sheet;
In the peeling auxiliary step, a peeling auxiliary member supported by the adherend support means is used, and the peeling auxiliary member is brought into contact with the leading end in the feeding direction of the adhesive sheet that has not been peeled off from the release sheet at the folded portion. A sheet pasting method characterized in that the leading end portion in the feeding direction is peeled from the release sheet.