JP2018154046A - Bonding method of laminate and bonding apparatus of laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bonding method of a laminate for actual use, capable of producing a laminate of a plurality of parts bonded together efficiently in a short time, and moreover, capable of suppressing unevenness in bonding strength of produced laminates and properties such as shapes of flow passes and voids.SOLUTION: A bonding apparatus 1 of a laminate contains: a base 2 which is capable of installation of a plurality of laminates L,L.. prepared by laminating two pieces of synthetic resin sheets S,S; a counter plate 6 provided to face the base 2; and a film-like rubber body 4 attached to the inner face of the counter plate 6. The bonding apparatus 1 is configured so as to be able to inflate a film-like body 4 by injecting an air to a mold cavity C formed with the counter plate 6 and the film-like body 4 and to press the plurality of laminate L,L.. installed on the base 2 simultaneously.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a bonding method for forming a laminate by bonding a plurality of members (parts) formed of a synthetic resin or the like, and a bonding apparatus suitable for the bonding method.

  As a method for bonding a plurality of members formed of synthetic resin or the like to form a laminated body, conventionally, an adhesive is applied to the bonding interface and dried, and then an adhesive 2 A method is known in which two members are bonded to each other by utilizing a physical or chemical interaction acting between the two members. For example, Patent Document 1 discloses a method of forming a chip having a fine flow path or a gap at the interface between two members by bonding two members provided with grooves and protrusions with an ultraviolet curable adhesive. Is disclosed.

  Further, as another method for bonding a plurality of members to form a laminated body, as in Patent Document 2, by heating and pressing a laminated body in which a plurality of synthetic resin members are stacked, A method of forming a laminated body formed by heat bonding is also known.

Japanese Patent Laying-Open No. 2015-108616 International Publication WO2009 / 139407

  However, the method of adhering two members with an adhesive as in Patent Document 1 takes time to dry the adhesive, so that it is not possible to efficiently form a laminate and the application of the adhesive There is a problem that the bonding strength of the two members varies due to the spots. In addition, the method of thermocompression bonding a plurality of members as in Patent Document 2 described above, when the applied pressure fluctuates, the shape of the flow paths and voids formed in each laminate does not become uniform, and the plurality of laminates Since it is difficult to uniformly adjust the pressure applied to the substrate, there is a problem that it is difficult to manufacture a plurality of laminated bodies at one time.

  The purpose of the present invention is to eliminate the problems of the conventional method of attaching a laminate, and to efficiently produce a laminate obtained by attaching a plurality of members within a short period of time. An object of the present invention is to provide a practical method for attaching a laminated body that can suppress variations in properties such as a bonding strength, a flow path, and a void shape of a laminated body to be manufactured. Moreover, it is providing the sticking apparatus which can be used suitably for the sticking method of such a laminated body.

  Among the present inventions, the invention described in claim 1 is a sticking method for laminating a plurality of plate-like materials or sheet-like materials, and is formed by laminating a plurality of plate-like materials or sheet-like materials. A sticking device comprising a base on which a plurality of laminated bodies can be arranged, a counter plate provided to face the base, and a rubber film attached to the inner surface of the counter plate And inflating the film-like body by injecting a fluid into the sealed space formed by the counter plate and the film-like body while heating the plurality of laminated bodies installed on the base, A plurality of laminated bodies installed on the base are pressed simultaneously.

  The invention described in claim 2 is the invention described in claim 1, in which the sticking device is configured so that the movable region of the film-like body is applied to the laminated body by applying a constant pressing force to the laminated body. The installation area of the laminated body pressed by the expanded film-like body is made narrower than the uniform pressing area.

  The invention described in claim 3 is the invention described in claim 1 or 2, wherein at least a part of the plurality of plate-like materials or sheet-like materials constituting the laminate is thermally adhesive. It is characterized by containing a resin.

  The invention described in claim 4 is a bonding apparatus for bonding a plurality of plate-like objects or sheet-like objects, and a plurality of laminates formed by laminating a plurality of plate-like objects or sheet-like objects. It has a base that can be installed side by side, a counter plate provided to face the base, and a rubber film attached to the inner surface of the counter plate, and is installed on the base While the plurality of laminated bodies are heated, the film-like body is expanded by injecting a fluid into the sealed space formed by the opposing plate and the film-like body, and the plurality of the laminated bodies installed on the base The laminated body is pressed at the same time.

  The invention described in claim 5 is characterized in that, in the invention described in claim 4, a recess for installing the laminate is provided on the surface of the base.

  According to the method for attaching a laminate according to claim 1, a plurality of laminates are pressed simultaneously on a plurality of laminates that are installed on a base and heated by an expanded film-like body. Can be manufactured at one time (that is, a plurality of plate-like materials or sheet-like materials which are constituent members of each laminate can be simultaneously attached). In addition, according to the method for attaching a laminate according to claim 1, the pressure applied to the laminate can be easily fine-tuned by adjusting the expansion coefficient of the film-like body, so that it is sensitive to pressure. Even laminates made of materials (materials that are easily damaged by excessive pressure, or formed with a structure that provides unevenness and internal space at the pasted interface, etc.) can be manufactured efficiently and accurately with high yield. . In addition, by applying a small pressure uniformly and continuously to a plurality of laminated bodies over a long period of time, a laminated body can be manufactured mildly without applying a large load, Uniformity is also excellent.

  According to the method for adhering a laminate according to claim 2, since it becomes possible to press a plurality of laminates with the same pressure by the expanded film-like body, the adherend (plate of each laminate) The sticking strength (thermoadhesive strength) between each other can be made uniform. When the sticking method as in claim 2 is adopted, the ratio (a / b (ratio of lengths in length and width)) between the movable area a and the uniform pressing area b of the film-like body is 1. 1 to 1.8, and the ratio (b / c (length / width ratio)) between the uniform pressing area b of the film-like body and the installation area c of the laminate on the base is 1. It is preferable to adjust it to be 1 or more and 1.8 or less because the pressure applied to each laminate by the expanded film-like body becomes more uniform and the manufacturing loss is reduced.

  According to the method for attaching a laminate according to claim 3, since the laminate can be attached at a lower temperature and lower pressure, a laminate made of a material sensitive to temperature and pressure can be produced more efficiently. It becomes possible to do.

  The laminated body sticking apparatus according to claim 4 is configured to press the plurality of laminated bodies once by simultaneously pressing the plurality of laminated bodies installed on the base and being heated by the expanded film-like body. (That is, a plurality of plate-like materials or sheet-like materials which are constituent members of each laminate can be simultaneously attached). In addition, according to the laminate sticking device of the fourth aspect, the pressure applied to the laminate can be easily fine-tuned by adjusting the expansion coefficient of the film-like body. Even a laminated body made of materials can be manufactured efficiently with high yield and with high accuracy.

  The laminated body sticking apparatus according to claim 5 is a position when pressing the plurality of laminated bodies with the expanded film-like body by fitting and installing the plurality of laminated bodies in the recesses formed on the base. Since the shift can be prevented, the laminate can be manufactured with very high accuracy.

It is a perspective view which shows the external appearance of the sticking apparatus of a laminated body. (A) is a bottom view of the upper member, and (b) is a vertical sectional view of the upper member (a sectional view taken along line AA in a). It is explanatory drawing (perspective view) which shows the state which assembled | attached the base and the upper member. It is explanatory drawing which shows a mode that a laminated body is manufactured using the sticking apparatus of a laminated body (a is a perspective view which shows a mode that a laminated body is installed in the recessed part of a base, b is an opposing board and a film | membrane. FIG. 4 is a right side view showing a state before air is filled into a cavity formed by a body, and c is a right side view showing a state after air is filled into the cavity). It is explanatory drawing (right view) which shows the state which installed the laminated body in the recessed part of a base using a metal plate. Explanatory drawing which shows the example of a change of a base (a is a top view of the base which provided the partition plate in the recessed part, b is a top view of the base which provided the taking-out auxiliary part in each recessed part continuously).

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a laminate sticking method and a sticking apparatus according to the present invention will be described in detail based on the drawings.

<Laminate>
As a laminated body stuck by the laminating method and mounting apparatus according to the present invention, a plurality of plate-like objects or sheet-like objects (parts) formed of plastic, glass, silicon, metal or the like are laminated. The kind is not particularly limited. As plastics for forming plate or sheet materials, high density polyethylene, low density polyethylene, polypropylene, polystyrene, various cyclic polyolefins, polymethyl methacrylate, polynorbornene, polyphenylene oxide, polycarbonate, polyamide, polyester, phenol resin And thermoplastic resins such as epoxy resins. Examples of the glass include quartz glass, alkali-free glass, borosilicate glass, and soda lime glass. Examples of the metal include silver, nickel, aluminum alloy, stainless steel, hastelloy, and titanium. In addition, the plate-like material or sheet-like material may be a single material made of the above-described plastic, glass, silicon, metal, or the like, or may be formed of two or more kinds of materials.

<Structure of Laminate Sticking Device>
1 to 4 show an example of a laminating apparatus (hereinafter, simply referred to as an adhering apparatus) according to the present invention, and the adhering apparatus 1 includes laminated bodies L and L that are adherends. .. Are configured by a base 2 for installing the upper and lower members 3 provided with a rubber film-like body 4 for pressing the laminated bodies L, L. Hereinafter, the present invention will be described by showing specific dimensions. However, the disclosure of the dimensions is intended to show the dimensions in order to make the present invention more clear, and the present invention is not limited to these specific dimensions. It is not limited to only those.

  The base 2 is formed of a metal (aluminum) into a flat rectangular parallelepiped shape having a predetermined size (vertical × horizontal × height (thickness) = 210 mm × 150 mm × 30 mm). Then, a predetermined size (vertical × vertical) that allows a plurality of stacked bodies L, L,... To be placed side by side in the central portion of the upper surface (a portion that enters a predetermined length from the peripheral edge). A recess 5 having a width x depth = 122 mm x 62 mm x 8 mm is formed. In addition, screw holes (not shown) are provided around the front and rear edges of the left and right side surfaces of the base 2 so as to surround a screw groove for screwing with the upper member 3.

  On the other hand, the upper member 3 is provided with a counter plate 6 disposed so as to face the base 2, a film body 4 installed on the lower surface of the counter plate 6, and the film body 4 fixed to the counter plate 6. Support frame 7 and four support columns 8, 8... Vertically provided at front, rear, left and right corners of the counter plate 6. The counter plate 6 is formed of a metal (aluminum) in the shape of a flat rectangular parallelepiped having the same size as the base 2 (vertical × horizontal = 210 mm × 150 mm), and has a height (thickness of about 10 mm). doing). Further, the columns 8, 8,... Are formed of a metal (aluminum) into a rectangular column shape having a predetermined height (55 mm), and the upper end portions are the edges of the front and rear sides of the left and right sides of the counter plate 6. It is in a state of being fixed to. Further, screw holes (not shown) for screwing to the base 2 are formed at the lower ends of the support columns 8, 8,.

  Further, the support frame 7 is made of metal (aluminum) and is a flat (fixed width × about 15 mm) annular (flat) having the same size as the opposing plate 6 and the base 2 (vertical × horizontal = 210 mm × 150 mm). The shape of the rectangular parallelepiped is hollowed out), and has a height (thickness) of about 10 mm. On the other hand, the film-like body 4 is formed in a sheet shape having a thickness of about 2.0 mm by a flexible rubber (butyl rubber). Then, as shown in FIG. 2, in a state where the film-like body 4 is disposed on the lower side of the counter plate 6, the support frame 7 is screwed to the counter plate 6 by screwing means (not shown), thereby The peripheral edge is sandwiched and fixed between the support frame 7 and the counter plate 6.

  In addition, a cylindrical tube 9 serving as an air flow path is provided at substantially the center of the upper surface of the counter plate 6 so as to penetrate the counter plate 6 in the vertical direction, and protrudes from the upper surface of the counter plate 6. It has become. The cylindrical tube 9 is provided with a cock (not shown) to be openable and closable so as to conduct or seal the air. A pressure cylinder (not shown) filled with compressed air is connected to the tip of the cylindrical tube 9. In addition, a pressure gauge 10 is installed on the side of the cylindrical tube 9, and a portion for detecting pressure is exposed from the lower surface of the opposing plate 6.

  In addition, in the sticking apparatus 1 configured as described above, from the viewpoint of the elastic modulus and thickness of the film-like body 4, as shown in FIG. 4C, the opening portion of the support frame 7 (vertical × horizontal = 180 mm). × 120 mm) is generally the movable region a of the film-like body 4, and the horizontally long rectangular portion (vertical × horizontal = 150 mm × 90 mm) at the center of the film-like body 4 is generally the laminates L, L ··· Uniform pressing region b where a constant pressing force can be applied. Further, as described above, the recess 5 (vertical × horizontal = 122 mm × 62 mm) is the installation area c of the stacked bodies L, L. Therefore, in the sticking apparatus 1, the movable area a of the film-like body 4 is wider than the uniform pressing area b (that is, the vertical and horizontal lengths of the movable area a are equal to the uniform pressing area b, respectively. ) And the installation area c of the laminates L, L... Is narrower than the uniform pressing area b (that is, the vertical and horizontal lengths of the installation area c). The length is shorter than the vertical and horizontal lengths of the uniform pressing region b). And in the vertical direction of the sticking apparatus 1, the ratio (a / b (ratio of length)) of the movable area | region a of the film-like body 4 and the uniform press area | region b is 1.2, and it is film-form The ratio (b / c (length ratio)) between the uniform pressing area b of the body 4 and the installation area c of the laminates L, L. Moreover, in the horizontal direction of the sticking apparatus 1, the ratio (a / b) between the movable area a and the uniform pressing area b of the film-like body 4 is about 1.33, and the film body 4 is uniformly pressed. The ratio (b / c) between the area b and the installation area c of the laminates L, L... Is about 1.45.

<Thermal bonding of the laminated body by the sticking device>
Hereinafter, the sticking method in the case of heat-bonding several laminated bodies L and L at once using the above-mentioned sticking apparatus 1 is demonstrated. In addition, although the sticking apparatus 1 can thermally bond various laminates, here, a 2.0 mm thick nylon sheet, a 1.0 mm low density polyethylene sheet (thermoadhesive sheet), a thickness A laminate L formed by laminating 1.0 mm polyester sheets in this order and laminating two synthetic resin sheets S and S having a total thickness of 4.0 mm so that the low-density polyethylene sheet surfaces come into contact with each other is heated. The case of bonding will be described. In addition, the laminated body L is formed in the rectangular shape (length x width = 24 mm x 60 mm) of a predetermined | prescribed magnitude | size, and the synthetic resin sheets S and S which are structural members are heat-adhesive in a part of center. A portion where the sheets are not stacked is formed.

  When a plurality of laminates L, L,... Are thermally bonded at once using the sticking device 1, first, an external power switch is turned on to a heat source (not shown) inside the base 2 By turning on the power, the base 2 is heated to a predetermined temperature (about 70 ° C.). After the base 2 reaches a predetermined temperature, as shown in FIG. 4 (a), a plurality of (five) laminated bodies L, L,... Are arranged and fitted into the recess 5 of the base 2. To do.

  In order to apply a uniform pressing force by the film-like body 4 to the laminates L, L,... When the laminates L, L,. It is desirable to install the laminates L, L,... So that the surfaces (upper surfaces) of the laminates L, L,... Are located at the same height as the surface of the base 2 or above the base 2. Therefore, when the thickness of the laminated bodies L, L,... Is less than the depth of the recess 5, for example, as shown in FIG. It is desirable to raise the thickness so that the combined thickness of the laminates L, L... And the metal plates P, P exceeds the depth of the recess 5. The metal plate P placed on the laminated body may have a larger area than the laminated body as shown in FIG. As shown in FIG. 5, the shape of the base 2 can be stepped so as to fit the metal plate P.

  As described above, after the plurality of stacked bodies L, L,... Are arranged in the recess 5, the upper member 3 is mounted on the base 2 so that the counter plate 6 faces the upper surface of the base 2 as shown in FIG. Are fixed to each other (ie, screw members (not shown) are used to screw the lower ends of the columns 8, 8,... Of the upper member 3 to the base 2). Further, after the base 2 and the upper member 3 are fixed, air in a pressure cylinder (not shown) is sealed through a cylindrical tube 9 (hereinafter referred to as a sealed space formed by the opposing plate 6 and the film-like body 4). In the cavity C). When air is filled in the cavity C in this way, the film-like body 4 expands due to the pressure of the air, and the upper surfaces of the laminated bodies L, L,. Press with pressure. Note that the pressure in the cavity C is measured by the pressure gauge 10, and the measured value is fed back to control the pressure in the cavity C to a preset pressure.

  And when the film-like body 4 expands and the five laminated bodies L, L,... Installed on the base 2 are pressed with a constant pressure, the laminated bodies L, L,. The interface between the synthetic resin sheets S and S is thermally bonded to a certain strength by the interaction between the pressing force of the film-like body 4 and the heat transmitted from the base 2.

<Effects of the method of sticking the laminate using the sticking device>
As described above, the sticking apparatus 1 includes a base 2 on which a plurality of (five) laminated bodies L, L, which are formed by laminating two synthetic resin sheets S, S can be placed side by side, and the base 2, and a rubber film 4 attached to the inner surface of the counter plate 6, and is formed by the counter plate 6 and the film 4. The film-like body 4 is expanded by injecting air into the cavity C (sealed space), and the five laminated bodies L, L,... Installed on the base 2 are pressed simultaneously. Therefore, according to the method of sticking a laminate using the sticking apparatus 1, a plurality of laminates L, L... In which the synthetic resin sheets S, S are thermally bonded are simultaneously and efficiently manufactured (at a time). be able to. Moreover, according to the sticking method using the sticking apparatus 1, by adjusting the expansion coefficient of the film-like body 4, the pressure applied to each of the laminates L, L. The laminates L, L,... Are made of pressure sensitive materials (materials that are easily damaged by excessive pressure, or those in which a fine structure such as a flow path is formed at the bonding interface of the synthetic resin sheets S, S). Even in this case, it can be manufactured with good yield and high accuracy.

  Moreover, since the recessed part 5 for installing the laminated bodies L, L ... is provided in the surface of the base 2, the laminated body sticking apparatus 1 sticks the laminated body using the sticking apparatus 1 According to the method, it is possible to prevent misalignment when the laminated body L, L,... Is pressed by the expanded film-like body 4 by fitting the laminated bodies L, L,. Therefore, the laminates L, L.. Can be manufactured with very high accuracy (the synthetic resin sheets S, S can be thermally bonded).

  Further, as described above, the laminated body sticking apparatus 1 makes the movable area a of the film-like body 4 wider than the uniform pressing area b where a constant pressing force can be applied to the laminated bodies L, L. In addition, since the installation area c of the laminates L, L,... Pressed by the expanded film-like body 4 is made narrower than the uniform press area b, the laminate using the sticking device 1 According to the sticking method, it is possible to press the plurality of laminated bodies L, L,... Installed on the base 2 and heated by applying an equal pressure to the expanded film-like body 4. Variations in the bonding strength (thermoadhesive strength) of the synthetic resin sheets S, S of the laminates L, L... Can be kept low.

<Example of Laminate Adhering Method and Modification of Adhering Device>
The structure of the method for adhering the laminate according to the present invention is not limited to the aspect of each embodiment described above, such as the base of the adhering device, the upper member (opposing plate, film-like body, etc.) The configuration such as the shape / dimension / structure / material, and the temperature at which the laminate is heated can be appropriately changed as necessary without departing from the spirit of the present invention.

  For example, the sticking device according to the present invention is limited to an apparatus for inflating the film-like body by injecting air into a sealed space (cavity) formed by the opposing plate and the film-like body as in the above embodiment. Alternatively, a fluid different from air such as water or oil may be injected into the sealed space to expand the membrane. Note that, as in the above embodiment, in the case where the sticking device inflates the film-like body by injecting air into the sealed space, there is a merit that it is easy to recover even if fluid leaks. .

  Further, the sticking device is not limited to the one in which the five laminated bodies are arranged in a certain direction on the base as in the above embodiment, and four or less or six or more laminated bodies can be installed. The thing which can be installed in a different direction may be sufficient as a thing. In addition, the sticking apparatus is not limited to the one provided with a series of recesses in which a plurality of laminated bodies can be installed side by side as in the above-described embodiment, and the plurality of laminated bodies are separately provided as shown in FIG. ···················· Removal assisting portions (concave portions) 12, 12 such as those in which the partitions 11, 11,. .. May be continuously provided (engraved) in the installation area of each laminate.

  Further, the sticking device is not limited to the one having the flat surface of the upper member (counter plate) as in the above embodiment, and a handle for facilitating gripping is provided on the surface of the upper member (counter plate). Goods may be used. Furthermore, the sticking device is not limited to the one that keeps the distance between the base and the counter plate constant by screwing the column fixed to the upper member (counter plate) to the base as in the above embodiment. By engaging engaging means such as hooks provided on the base or the upper member (opposing plate) with the adherent portion provided on the upper member (opposing plate) or the base, It is also possible to change the distance so as to keep the distance constant.

  Further, the sticking device is not limited to the one in which the film-like body made of butyl rubber is mounted on the upper member (counter plate) as in the above embodiment, but the film-like body made of rubber different from butyl rubber such as silicone rubber is used. It may be mounted on the upper member (counter plate). In addition, when the film-like body made of butyl rubber is attached to the upper member (opposing plate) as in the above embodiment, there is an advantage that the pressure by the expanded film-like body can be easily finely adjusted. In addition, the sticking apparatus is not limited to the size as in the above-described embodiment, and can be increased in size or reduced as necessary.

  In addition, the configuration of the method for adhering the laminate according to the present invention is not limited to the method of heating the laminate using a heat source built in the base as in the above embodiment, and the entire adhering apparatus is used. It is also possible to change to one that heats the laminated body in an oven or the like.

  Since the method for adhering the laminate of the present invention exhibits excellent effects as described above, it can be suitably used as a method for adhering (thermally bonding) a plurality of plate-like materials or sheet-like materials. it can. Moreover, the sticking apparatus of this invention can be used suitably as an apparatus for embodying the sticking method of this laminated body.

1 .. Sticking device 2 .... Base 4 .... Membrane 5 .... Recess 6 .... Opposite plate S ... Synthetic resin sheet L ... Laminated body

Claims (5)

A bonding method for bonding a plurality of plate-shaped materials or sheet-shaped materials,
A base on which a plurality of laminates formed by laminating a plurality of plate-like materials or sheet-like materials can be placed side by side;
An opposing plate provided to face the base;
Using a sticking device provided with a rubber film attached to the inner surface of the opposing plate,
While heating a plurality of laminated bodies installed on the base, the film-like body is expanded by injecting a fluid into a sealed space formed by the counter plate and the film-like body. A method of attaching a laminated body, comprising pressing a plurality of installed laminated bodies simultaneously.   Installation of the laminated body in which the sticking device makes the movable region of the film-like body wider than the uniform pressing region where a certain pressing force can be applied to the laminated body, and is pressed by the expanded film-like body The method for attaching a laminate according to claim 1, wherein the region is narrower than the uniform pressing region.   The laminate according to claim 1 or 2, wherein at least a part of a plurality of plate-like or sheet-like materials constituting the laminate includes a heat-adhesive resin. How to stick. A bonding apparatus for bonding a plurality of plate-shaped objects or sheet-shaped objects,
A base on which a plurality of laminates formed by laminating a plurality of plate-like materials or sheet-like materials can be placed side by side;
An opposing plate provided to face the base;
It has a rubber membrane attached to the inner surface of the opposing plate,
While heating a plurality of laminated bodies installed on the base, the film-like body is expanded by injecting a fluid into a sealed space formed by the counter plate and the film-like body. A laminate sticking apparatus, wherein a plurality of installed laminates are pressed simultaneously.   The laminating apparatus according to claim 4, wherein a recess for installing the laminate is provided on a surface of the base.

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