JP2021062544A - Sticking apparatus and sticking method - Google Patents

Abstract

To provide a sticking apparatus with which a sticking member can be stuck even to an adherend having a curved surface with high accuracy and without breakage.SOLUTION: A sticking apparatus 10 is to stick an adherend 11 having a curved surface 11a and a sticking member 12 to each other. The sticking apparatus 10 has a pressing part 30 to press at least one of the adherend 11 or the sticking member 12 and a supporting part 20 to support either the adherend 11 or the sticking member 12. The supporting part 20 consists of a cell assembly 22 configured with a plurality of cylindrical cells 22a juxtaposed to each other, and a curved part 25 having a curve along a curved surface of the adherend 11 is formed on one end side in the axial direction of the cell assembly 22. The supporting part 20 supports either the adherend 11 or the sticking member 12 on the curved part 25 along the curvature of the curved part 25, and the pressing part 30 presses the other along the curvature of the curved part 25.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sticking device and a sticking method for sticking an adherend having a curved surface and a sticking member such as a sheet material. More specifically, the present invention relates to a sticking device and a sticking method for sticking a sticking member such as a polarizing plate or a protective sheet to an adherend such as a curved liquid crystal panel or an organic EL panel.

Conventionally, display materials such as liquid crystal panels and organic EL panels have been formed flat. Recently, displays having curved surfaces have been used in various fields such as car navigation systems and smartphones for the purpose of improving display performance and design. Therefore, in manufacturing a display having these curved surfaces, for example, an optical sheet such as a polarizing plate is attached to an adherend such as a liquid crystal panel or an organic EL panel having a curved surface (for example,). Patent Document 1).

Japanese Unexamined Patent Publication No. 2005-134460

By the way, the invention described in Patent Document 1 includes a first polarizing plate, a liquid crystal panel, and a second polarizing plate (corresponding to a second member) on a base having a curved surface (corresponding to a first member). ) And the like are arranged in layers, and the second polarizing plate is attached to and fixed to the base in a state where the liquid crystal panel is curved between the base and the second polarizing plate. However, when the adherend such as the base or the liquid crystal panel is not flexible, the adherend may be damaged or the adherend may be attached if the adherend as in the invention described in Patent Document 1 is attached. There was a problem that the pasting accuracy sometimes deteriorated due to misalignment. Further, when the adherend does not have flexibility, there is a problem that the adherend shifts at the time of sticking and bubbles enter.

Therefore, an object of the present invention is to provide a sticking device and a sticking method capable of accurately sticking an adherend having a curved surface and a sticking member such as a sheet material.

The sticking device of the present invention provided to solve the above-mentioned problems is a sticking device for sticking an adherend having a curved surface and a sticking member to each other, and the adherend or the sticking member. The support portion has a pressing portion that presses at least one of the above, and a support portion that supports either the adherend or the sticking member, and the support portion has a plurality of tubular cells along the axis of the cylinder. The cell aggregate is composed of cell aggregates arranged side by side in the plane direction intersecting the direction, and the cell aggregate is formed with a curved portion having a curvature along the curved surface of the adherend on one end side in the axial direction. The support portion supports either the adherend or the sticking member on the curved portion along the curvature of the curved portion, and the pressing portion supports the other one of the curved portions. It is characterized in that it presses along the curvature of.

According to such a configuration, since the support portion has a curved portion, it is possible to support the adherend to the support portion along the curved surface even if the adherend has a curved surface. As a result, it is possible to attach the adherend to the sticking member without damaging the adherend. Further, since the adherend and the sticking member are stuck while applying an appropriate pressing force, it is possible to perform the sticking with high accuracy without generating air bubbles or wrinkles.

Further, since the support portion is composed of the cell aggregate as described above, it is possible to maintain the strength that can withstand the load due to the pressing from the axial direction. This makes it possible to reduce the weight of the pasting device. Further, since the support portion is composed of the cell assembly as described above, it is possible to easily form a curved portion in the cell assembly.

The pasting device of the present invention provided to solve the above-mentioned problems is characterized in that the cell assembly is a honeycomb structure.

According to this configuration, since the cell assembly is a honeycomb structure, it is easy to maintain the strength of the support portion and it is possible to reduce the weight of the support portion. As a result, the weight of the pasting device can be reduced.

The sticking device of the present invention provided to solve the above-mentioned problems is characterized in that the support portion supports either the adherend or the sticking member via a cushioning member. It is a thing.

According to this configuration, even if the surface of the adherend is made of a material that is easily scratched, the cushioning member does not cause the adherend to come into direct contact with the curved portion, so that the adherend may be damaged or the adherend may be damaged. It will not be damaged.

The sticking device of the present invention provided to solve the above-mentioned problems is characterized in that the support portion is removable and can be replaced according to the curved shape of the curved surface of the adherend. Is.

According to such a configuration, since the support portion is removable, the support portion can be replaced according to the curved shape of various adherends. Therefore, it is possible to easily switch the type of adherend, and it is possible to provide a highly versatile pasting device. Further, since the support portion is formed of the cell aggregate as described above, the support portion is lightweight and can be easily replaced.

In the pasting device of the present invention provided to solve the above-mentioned problems, the pressing portion and the supporting portion are arranged in a vacuum chamber, the inside of the vacuum chamber is decompressed, and then the pressing portion is used. It is characterized in that the pressing is performed by.

According to such a configuration, since the adherend and the sticking portion are stuck together under reduced pressure, air bubbles do not enter the sticking surface between the adherend and the sticking portion. Therefore, even if the adherend has a curved surface, the adherend and the sticking member can be stuck with high accuracy.

The sticking method of the present invention provided to solve the above-mentioned problems is a sticking method of sticking an adherend having a curved surface and a sticking member to each other, and the adherend or the sticking member. A pressing portion that presses at least one of the above and a support portion that supports either the adherend or the sticking member is provided, and the support portion is provided with a plurality of tubular cells in the axial direction of the cylinder. It is formed as a cell aggregate that is assembled in the intersecting plane directions, and a curved portion having a curvature along the curved surface of the adherend is formed on one end side of the cell aggregate in the axial direction. A support step of supporting either the adherend or the sticking member on the curved portion, and one of the adherend or the sticking member on the curved portion along the curvature of the curved portion. It is characterized in that a pressing step of pressing the other one along the curvature of the curved portion while supporting the above is performed.

According to such a configuration, even if the adherend has a curved surface, the adherend can be supported by the support portion along the curved surface. Thereby, the sticking member can be stuck to the adherend without damaging the adherend. Further, since the adherend and the sticking member are stuck while applying an appropriate pressing force, it is possible to perform the sticking with high accuracy without generating air bubbles or wrinkles.

The pasting method of the present invention provided to solve the above-mentioned problems is characterized in that the cell aggregate is a honeycomb structure.

According to such a configuration, since the cell assembly is a honeycomb structure, it is possible to execute the pressing step while maintaining the strength of the support portion.

In the sticking method of the present invention provided to solve the above-mentioned problems, in the support step, either the adherend or the sticking member is supported on the curved portion via a cushioning member. It is characterized by being.

According to such a configuration, even if the surface of the adherend is made of a material that is easily scratched, the adherend does not come into direct contact with the curved portion due to the cushioning member, so that the adherend is damaged or damaged. There is nothing to do.

In the sticking method of the present invention provided to solve the above-mentioned problems, the support portion is made detachable, and the support portion responds to the curved shape of the curved surface of the adherend before the support step. It is characterized by including a replacement step of being replaced.

According to such a configuration, since the support portion includes a replacement step in which the support portion is replaced according to the curved shape of the curved surface of the adherend before the support step, the support portion is replaced according to the curved shape of various adherends. Can be exchanged. As a result, it is possible to easily switch the type of adherend, and it is possible to provide a highly versatile pasting method. Further, since the support portion is formed of the cell aggregate as described above, the support portion is lightweight and can be easily replaced.

In the sticking method of the present invention provided to solve the above-mentioned problems, the pressing portion and the supporting portion are arranged in a vacuum chamber, and after the supporting step and before the pressing step, the inside of the vacuum chamber is formed. Is characterized in that a depressurization step is performed to bring the material into a depressurized state, and the pressing step is performed under depressurization.

According to such a configuration, since the adherend and the attachment portion are attached under reduced pressure, air bubbles do not enter the attachment surface between the adherend and the attachment member. That is, it is possible to accurately attach the adherend having a curved surface to the attaching member.

According to the sticking device and the sticking method of the present invention, even if the adherend has a curved surface, the adherend and the sticking member can be stuck with high accuracy.

Is a partially cutaway schematic perspective view according to an embodiment of the pasting device of the present invention. Is a schematic front view according to an embodiment of the pasting device of the present invention. Is a perspective view showing an embodiment of the support portion forming method according to the sticking device of the present invention. (A) to (c) are explanatory views showing one embodiment of the pasting method of the present invention. (A) and (b) are explanatory views showing another embodiment of the pasting method of this invention.

An embodiment of the pasting device of the present invention will be described in detail below with reference to FIGS. 1 to 3. FIG. 1 is a schematic perspective view of a partial cutout of the pasting device 10 of the present invention, and FIG. 2 is a schematic front view of the pasting device 10. In the present embodiment, for example, a case where the adherend 11 is a curved display such as an organic EL panel having a curved surface 11a and the sticking member 12 is a polarizing plate or the like will be described as an example.

As shown in FIGS. 1 and 2, the sticking device 10 includes a support portion 20 that supports the adherend 11, a pressing portion 30 that presses the sticking member 12 against the adherend 11, and the like.

As shown in FIGS. 1 and 2, the support portion 20 is formed in a rectangular shape in a plan view, and includes a curved portion 25 formed in a curved shape on the upper surface side. The support portion 20 is supported on the machine base 13 of the sticking device 10 so that the curved portion 25 is on the upper surface. The curved portion 25 is formed along the shape of the curved surface 11a of the adherend 11, and in the present embodiment, the curved portion 25 is formed in an arc shape having a concave central portion. The method of forming the curved portion 25 will be described later.

FIG. 3 is an enlarged view of a part of the support portion 20 before forming the curved portion 25. As shown in FIGS. 1 and 3, the support portion 20 is formed of a cell assembly 22 in which a plurality of tubular cells 22a are arranged side by side in a plane direction intersecting the axial direction of the cylinder. For the support portion 20, for example, a member made of a relatively lightweight material such as aramid resin or aluminum can be preferably used. Further, the support portion 20 can be formed, for example, by arranging hexagonal tubular cells 22a side by side in a plane direction intersecting the axial direction as in the present embodiment. By arranging the cells 22a side by side to form the cell assembly 22, it is possible to reduce the weight while maintaining the strength that can withstand the load due to the pressing from the axial direction.

Further, in the present embodiment, the cell assembly 22 is formed so as to be shared by the adjacent partition walls of the cells 22a. Further, the cell assembly 22 is configured as a honeycomb structure. As a result, the shapes of the cells 22a are aligned and the cells 22a are densely arranged side by side, so that the load due to the pressing from the axial direction is evenly distributed in the cells 22a, so that the strength is further improved.

Next, an example of a method for forming the curved portion 25 will be described in detail below. As shown in FIG. 3, the curved portion 25 is formed by pressing, for example, a wire 40 of a wire saw (not shown) from a direction intersecting the axial direction (vertical direction in the drawing) of the tubular cell 22a. In the wire saw, for example, one wire 40 in which abrasive grains such as diamond are fixed to the surface is run at high speed in one direction or both directions, and the wire 40 is made to work (corresponding to a support portion 20 in this embodiment). The cutting process is performed by pressing the wire against the wire. For the formation of the curved portion 25, a robot wire saw in which the wire saw is mounted on a robot that can move in multiple directions can be preferably used. The robot wire saw is controlled according to the shape information of the curved surface 11a of the adherend 11 input in advance. In the present embodiment, for example, the curved portion 25 is formed by moving the wire 40 in the robot wire saw in the direction of the cutting line 41 (two-dot chain line in the figure) calculated according to the above information.

The support portion 20 is supported on the machine base 13 as described above, but can be attached to and detached from the machine base 13 by an appropriate attachment / detachment mechanism (not shown). As the attachment / detachment mechanism, various mechanisms such as a mechanism for inserting a pin through the cell 22a and a mechanism for holding the side wall of the support portion 20 so as to be openable and closable can be adopted. Further, the support portion 20 can be positioned on the machine base 13 by means of claws, pins, grooves and the like.

Further, the support portion 20 is provided with a cushioning member 21 that covers the curved portion 25. As the cushioning member 21, a flexible sheet-like member can be preferably used. The cushioning member 21 is interposed between the curved portion 25 and the adherend 11 to prevent the support surface of the adherend 11 from being damaged or damaged. As the cushioning member 21, for example, various materials such as resin and rubber can be used.

Further, the support portion 20 can hold the adherend 11 via the cushioning member 21. The adherend 11 is supported on the support portion 20 by physically sandwiching the curved portion 25 with a claw, a clamp, or the like, holding the adherend 11 by adhesion to the cushioning member 21, and providing a suction hole in the cushioning member 21. It can be carried out by an appropriate means such as holding by adsorption via the cushioning member 21.

As shown in FIG. 2, the pressing portion 30 includes a sticking roller 31 for pressing the sticking member 12 against the adherend 11, a holding member 33 for temporarily holding the sticking member 12 on the lower surface side, and the like.

A cylinder 32 is connected to the upper part of the sticking roller 31, and the sticking roller 31 can be raised and lowered by the action of the cylinder 32. Further, the sticking roller 31 is connected to an appropriate drive source (not shown) that allows the adherend 11 to move along the sticking direction (horizontal direction in the drawing). As a result, as the pressing portion 30, the sticking roller 31 can press the sticking member 12 against the adherend 11 along the curvature of the curved portion 25.

The holding member 33 is formed of, for example, an adhesive sheet having adhesiveness on one side. In the present embodiment, the holding member 33 is formed of a long adhesive sheet that is longitudinal in the sticking direction of the sticking member 12. As the holding member 33, a member that supplies the adhesive sheet in a roll shape, a member that connects both ends of the adhesive sheet to form an annular shape, or the like can be used. In the present embodiment, the holding member 33 is bridged between a plurality of guide rollers 34 provided along the sticking direction so that the adhesive surface is on the lower surface side. The holding member 33 temporarily holds the sticking member 12 on the adhesive surface of the holding member 33. The sticking member 12 is stuck to the adherend 11 by being pressed by the sticking roller 31 via the holding member 33.

The above is the configuration of the pasting device 10 of the present invention. Next, with reference to FIGS. 4 (a) to 4 (c), the details of the pasting method in the pasting device 10 will be described below.

As shown in FIG. 4A, as a support step, a cushioning member 21 is laid on the upper surface of the curved portion 25 in the supporting portion 20, and subsequently, the adherend 11 is supported by the curved portion 25 via the cushioning member 21. To. Further, after the support step is executed, the sticking member 12 held by the holding member 33 is supplied onto the adherend 11 (two-dot chain line position in the figure). Next, the pressing portion 30 descends and the sticking roller 31 descends from the illustrated two-dot chain line position to the solid line position. As a result, the sticking start end portion of the sticking member 12 held by the holding member 33 is pressed against the sticking start end portion of the adherend 11.

As shown in FIG. 4B, as a pressing step, the pasting roller 31 presses the pasting member 12 via the holding member 33 along the curvature of the curved portion 25. As a result, the sticking member 12 is stuck along the curved surface 11a of the adherend 11.

As shown in FIG. 4C, as a pressing step, the sticking roller 31 moves to the sticking end portion of the adherend 11 in a pressed state, and then the sticking roller 31 rises. Subsequently, the entire pressing portion 30 including the holding member 33 rises, so that the sticking member 12 is separated from the holding member 33. As a result, the attachment of the adherend 11 and the attachment member 12 is completed. After that, the above-mentioned support step and pressing step are repeated.

Next, another embodiment of the pasting apparatus and the pasting method of the present invention will be described in detail below based on FIGS. 5A and 5B.

As shown in FIG. 5A, in the present embodiment, the pressing member 35 is provided as the pressing portion 30 instead of the sticking roller 31 of the pressing portion 30. The pressing member 35 is composed of the same members as the supporting portion 20 (for example, the cell assembly 22 described above), and the pressing surface 35a of the pressing member 35 is formed in a shape along the curved portion 25 of the supporting portion 20. Is. The pressing member 35 is detachably held by an appropriate mechanism (not shown) on a machine frame 14 provided on the upper part of the sticking device 10. The pressing surface 35a is arranged so as to face the curved portion 25 of the supporting portion 20, and can hold the sticking member 12. For the holding of the sticking member 12 on the pressing surface 35a, it is possible to adopt one by suction via the cell 22a, one by adhesion with an adhesive sheet (not shown) or the like appropriately provided on the pressing surface 35a, or the like. .. Further, the pressing member 35 can be raised and lowered by an appropriate means (not shown), and by lowering, the sticking member 12 can be pressed against the adherend 11 along the curvature of the curved portion 25. .. The pressing member 35 can be replaced according to the shape of the curved portion 25.

As shown in the drawing, as a support step, a cushioning member 21 is laid on the upper surface of the curved portion 25 in the supporting portion 20, and subsequently, the adherend 11 is supported on the curved portion 25 via the cushioning member 21. Next, the pressing member 35 descends from the illustrated two-dot chain line position to the solid line position. As a result, the entire sticking member 12 held by the pressing member 35 is pressed against the adherend 11 along the curvature of the curved portion 25.

As shown in FIG. 5B, as the pressing member 35 rises, the sticking member 12 is separated from the pressing member 35, and the sticking member 12 to the adherend 11 is completed. The above is the embodiment of the present invention, but the present invention is not limited to the above-described embodiment, and appropriate modifications can be made within the scope of the invention.

In the above-described embodiment, the cell 22a constituting the support portion 20 has a hexagonal shape, but the cell 22a adopts a tubular cell 22a having various shapes such as a circle, an ellipse, a triangle, a quadrangle, and a pentagon. Is possible. Further, in the cell assembly 22, if a plurality of tubular cells 22a are arranged side by side in a plane direction intersecting the axial direction of the cylinder, the plurality of cells 22a have different shapes. Is also good. Further, even when the cell assembly 22 is a honeycomb structure, the shape of the cell 22a is not limited to a hexagonal shape, and may be various shapes such as a triangle, a quadrangle, and a pentagon. Further, the partition walls of the cells 22a are not limited to those shared when they are arranged side by side, and the partition walls of the cells 22a may be in close contact with each other. Further, in the above-described embodiment, the curved portion 25 is formed by a wire saw, but the curved portion 25 can be formed by an appropriate means such as a laser or a band saw. Further, the curved portion 25 may be formed integrally or partially by various molding means. Further, the curved portion 25 is not limited to one curved in a bow shape in one direction, but may be curved so as to undulate in both directions, or may have various curved surface shapes.

In the above-described embodiment, the pressing portion 30 is composed of the sticking roller 31 or the pressing member 35, but the pressing portion 30 is not limited thereto. Various materials can be adopted as long as either the adherend 11 or the sticking member 12 can be pressed along the curved portion 25. Further, the adherend 11 or the sticking member 12 may be not only directly pressed but also indirectly pressed. For example, the holding member 33 may be provided between the pressing member 35 and the sticking member 12.

In the above-described embodiment, the cushioning member 21 is formed in a sheet shape, but the cushioning member 21 may be deformed along the curved portion 25 when pressed by the pressing portion 30. good. For example, as the cushioning member 21, various materials such as a sponge-like member and a gel-like member can be adopted. Further, the holding member 33 adopted in the pressing portion 30 may be appropriately adopted, and the sticking member 12 may be directly pressed by the pressing portion 30 without using the holding member 33.

In the above-described embodiment, the pasting method is described on the premise that the shape of the curved surface 11a of the adherend 11 is constant, but the shape of the curved surface 11a of the adherend 11 is different. When the sticking member 12 is pasted, the following replacement step may be adopted before the above-mentioned support step. For example, in the replacement step, a support portion 20 having a curved portion 25 having a different shape is mounted on the machine base 13 instead of the support portion 20 that has already been mounted.

In the above-described embodiment, the adherend 11 and the attachment member 12 are attached to each other in the atmosphere, but the support portion 20 and the pressing portion 30 are attached to a vacuum chamber (not shown). It is also possible to arrange the adherend 11 and the sticking member 12 under reduced pressure. When the adherend 11 and the sticking member 12 are stuck under reduced pressure as described above, the pressure reducing step of decompressing the inside of the vacuum chamber is performed after the supporting step and before the pressing step, and pressing is performed. The step may be performed after the depressurization step.

The sticking device and sticking method of the present invention can be used for various curved displays such as a liquid crystal panel having a curved surface, an organic EL panel, and a head-up display. Further, it can be widely used in the field of attaching various attachment members such as sheet members to an adherend having various curved surfaces other than a curved display.

10 Sticking device 11 Adhesive body 11a Curved surface 12 Sticking member 20 Supporting part 21 Cushioning member 22 Cell assembly 22a Cell 25 Curved part 30 Pressing part 31 Sticking roller 33 Holding member 35 Pressing member

Claims (10)

It is a sticking device that sticks an adherend having a curved surface and a sticking member to each other.
A pressing portion that presses at least one of the adherend or the sticking member, and
It has a support portion that supports either the adherend or the sticking member, and has.
The support portion is composed of a cell aggregate in which a plurality of tubular cells are arranged side by side in a plane direction intersecting the axial direction of the cylinder.
In the cell assembly, a curved portion having a curvature along the curved surface of the adherend is formed on one end side in the axial direction.
The support portion supports either the adherend or the sticking member on the curved portion along the curvature of the curved portion, and the pressing portion supports the other one of the curved portions. A pasting device characterized in that it presses along the curvature of. The pasting device according to claim 1, wherein the cell assembly is a honeycomb structure. The sticking device according to claim 1 or 2, wherein the support portion supports either the adherend or the sticking member via a cushioning member. The sticking device according to any one of claims 1 to 3, wherein the support portion is removable and can be replaced according to the curved shape of the curved surface of the adherend. Claims 1 to 4 are characterized in that the pressing portion and the supporting portion are arranged in a vacuum chamber, the inside of the vacuum chamber is put into a reduced pressure state, and then the pressing portion is pressed. The pasting device according to any one of the above items. It is a sticking method in which an adherend having a curved surface and a sticking member are stuck to each other.
A pressing portion that presses at least one of the adherend or the sticking member, and
A support portion for supporting either the adherend or the sticking member is provided.
The support portion is formed as a cell aggregate in which a plurality of tubular cells are assembled in a plane direction intersecting the axial direction of the cylinder, and the adherend is on one end side in the axial direction of the cell aggregate. A curved portion having a curvature along the curved surface of the
A support step of supporting either the adherend or the sticking member on the curved portion, and
A pressing step of supporting either the adherend or the sticking member on the curved portion and pressing the other along the curvature of the curved portion is executed along the curvature of the curved portion. A pasting method characterized by doing. The pasting method according to claim 6, wherein the cell aggregate is a honeycomb structure. The attachment method according to claim 6 or 7, wherein the support step supports either the adherend or the attachment member to the curved portion via a cushioning member. .. Claims 6 to 8 include making the support portion removable and including a replacement step in which the support portion is replaced according to the curved shape of the curved surface of the adherend before the support step. The pasting method according to any one of the above. The pressing portion and the supporting portion are arranged in a vacuum chamber, and after the supporting step, a depressurizing step of depressurizing the inside of the vacuum chamber is performed before the pressing step, and the pressing step is performed under reduced pressure. The pasting method according to any one of claims 6 to 9, wherein the pasting method is characterized in that.

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