KR101141366B1 - Solid gasket fabrication method for fuel cell separator - Google Patents

Abstract

Disclosed is a method for forming a solid state gasket of a separator for a fuel cell that can be exquisitely attached to a separator after preparing a separate solid gasket by peeling from a conventional method of directly injecting the separator onto a separator.

The present invention comprises the steps of preparing a solid gasket; Fixing to the suction jig with a suction force while maintaining the shape of the solid gasket; Applying an adhesive to an adhesive surface of the solid gasket or an adhesive portion of the separator; And aligning the solid gasket and the separator plate and then adhering the solid gasket to the separator plate.

Fuel cell, solid gasket, adsorption jig

Description

Solid Gasket Formation Method of Fuel Cell Separator {SOLID GASKET FABRICATION METHOD FOR FUEL CELL SEPARATOR}

The present invention relates to a method for forming a gasket of a separator for a fuel cell, which is conventionally directly injected onto a separator to form a separate solid-state gasket by peeling from a method of forming a fuel cell separator that can be attached to the separator precisely. It relates to a solid state gasket formation method.

In general, a fuel cell is a device that converts chemical reaction energy of hydrogen extracted from fuel and oxygen in air into electric energy and generates and distributes power cleanly. The difference from battery is that it does not need recharging. It is a power generation device that can continuously generate electricity as long as fuel is supplied.

Therefore, fuel cells are attracting attention as a next-generation power source to replace the current internal combustion engine in all industries as an environmentally friendly power source.

Among them, a polymer electrolyte fuel cell (PEMFC) is a fuel cell using a polymer membrane having a cation exchange property as an electrolyte, and a solid polymer electrolyte fuel cell (SPEFC) and a cation exchange membrane fuel cell. (PEMFC, Proton Exchange Membrane Fuel Cells).

Compared to other fuel cells, the polymer electrolyte fuel cell is characterized by a low operating temperature of about 80 ° C., high efficiency, high current density and high output density, short start-up time, and fast response to load changes. In particular, since the polymer membrane is used as the electrolyte, there is no need for corrosion and electrolyte control and is less sensitive to changes in the pressure of the reactor. In addition, the polymer electrolyte fuel cell can be applied to a wide variety of fields such as power source, pollution-free power generation, mobile power, military power, etc. Therefore, active research in the global automotive industry is ongoing.

The power generation principle of the polymer electrolyte fuel cell is as follows. When hydrogen flows to the anode side, the hydrogen is decomposed into electrons and hydrogen ions in the catalyst layer, and the hydrogen ions pass through the polymer electrolyte membrane located at the center of the membrane electrode assembly (MEA). When moved, with the help of a catalyst, electrons, oxygen and transferred hydrogen ions react at the cathode to produce water.

Here, electrons generated at the cathode are not moved through the electrolyte membrane, but are moved to the anode through an external circuit. As a result, electrons and water are generated. On the other hand, as a component of the polymer electrolyte membrane fuel cell, a flow path is formed to effectively introduce fuel gas (hydrogen and oxygen) supplied from the outside into the electrode, and serves to move generated electrons to an external electric circuit. Separator, Gas Diffusion Media, which distributes the introduced fuel gas uniformly to the electrode membrane and effectively discharges the generated water produced by the electrochemical reaction, Electrodes carrying a catalyst layer to cause an electrochemical reaction, and become a mobile medium of hydrogen ions, prevents the fuel gas from cross-over (electrically short circuit) It protects the electrolyte membrane (Membrane) and the fuel cell (Cell) from the outside to prevent generation, and the fuel gas and other harmful substances inside the cell is leaked to the outside It consists of a gasket etc. which serve to prevent it.

The invention relates in particular to a method for forming a gasket on a separator.

Conventionally, after manufacturing a separator, a gasket was formed by bonding a mold to the surface of the separator and injecting a resin to inject a gasket onto the surface of the separator.

However, since the conventional method is directly injection molded on the surface of the separator plate, injection pressure is applied to the separator plate, causing deformation of the separator plate.

When the burrs occur in the gaskets, the separators are disposed of as defective products together, resulting in a waste of resources.

The present invention is to solve the above problems, and provides a method of attaching the solid gasket separately from the separator plate and then attaching it so that injection pressure is not applied to the separator plate and that the defect of the gasket does not lead to the disposal of the separator plate. It is to provide a method for forming a solid gasket of the separator.

It is also an object of the present invention to provide a method for forming a solid state gasket of a separator plate for a fuel cell that can improve the production efficiency and reduce the manufacturing cost by providing a variety of methods for attaching the solid state gasket to the separator.

The present invention for achieving this object comprises the steps of preparing a solid gasket; Fixing the suction gasket to a suction jig while maintaining the shape of the solid gasket; Applying an adhesive to an adhesive surface of the solid gasket or an adhesive portion of the separator; And aligning the solid gasket and the separator plate and then adhering the solid gasket to the separator plate.

And the present invention comprises the steps of providing a solid gasket having an adhesive layer and a release paper on the adhesive surface; Fixing the adsorption jig to the adsorption jig and separating the release paper while maintaining the shape of the solid gasket; And aligning the solid gasket and the separator and adhering the solid gasket to the separator.

In addition, the present invention comprises the steps of providing a solid gasket, and mounting in a plurality of layers in the cassette so that the adhesive surface toward the working surface of the cassette while maintaining the shape of the solid gasket; Applying an adhesive to the adhesive side of the solid state gasket or the adhesive side of the separator; And aligning the solid state gasket and the separator plate and adhering the solid state gasket to the separator plate.

The present invention can solve the problem of discarding the separation plate due to defects of the gasket by separately manufacturing the solid gasket and performing the quality inspection and screening with only the gasket.

In addition, the present invention also has the effect of preventing the deformation of the separation plate generated when injection molding on the separation plate.

In addition, the present invention produces a solid-state gasket separately and supplies the solid-state gasket in the form of a cassette, thereby improving productivity and improving workability.

Hereinafter, a method of forming a solid gasket of a separator for a fuel cell of the present invention will be described with reference to the accompanying drawings.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In addition, the size of the components constituting the invention in the drawings are exaggerated for clarity of the specification, when any component is described as "exists inside, or is installed in connection with" other components, any of the above configuration An element may be installed in contact with the other component, may be installed at a predetermined distance, and when installed at a distance, a third element for fixing or connecting the component to the other component The description of the means may be omitted.

1 is a flowchart illustrating a method of forming a solid gasket of a separator for a fuel cell according to a first embodiment of the present invention.

As shown, the solid-state gasket forming method of the separator plate for a fuel cell according to the present invention is largely subjected to the following four steps.

Specifically, the step of preparing a solid gasket (S-10), the step of fixing to the adsorption jig while maintaining the shape of the solid gasket (S-11), applying an adhesive to the adhesive surface of the solid gasket or the adhesive portion of the separation plate In step S-12, the solid gasket and the separator are aligned, and then the solid gasket is formed on the separator for the fuel cell through the step of adhering the solid gasket to the separator (S-13).

First solid phase gasket preparing step (S-10) is to prepare and prepare a separate solid gasket. Conventionally, the mold is in close contact with the prepared separator and resin is injected to use a method of directly injection molding a gasket on the surface of the separator, but the present invention is characterized by separately manufacturing a solid gasket.

In the conventional direct injection method, when a defect occurs in the gasket, the separation plate cannot be used, resulting in a waste of resources. When burrs are generated in the gasket, they have to be manually inspected and removed daily. However, since the gasket is attached to the separator plate, the gasket is not easy to inspect and thus has a very poor workability.

In addition, there is a fear that deformation occurs in the separator due to the pressure generated during injection. As the separator is gradually thinning, the deformation of the separator should not occur due to the pressure during the injection of the gasket, thus requiring a predetermined thickness to maintain the strength of the separator. This has become one of the barriers to thinner plate separation.

The present invention is to solve such a conventional problem, by producing a solid gasket separately, it is possible to proceed the quality inspection of the solid gasket and the removal of the burrs in the state that the solid gasket is not coupled to improve workability. In addition, when a defect occurs in the solid gasket, it does not affect the separator plate, thereby preventing waste of resources.

The solid gasket may be made of synthetic resin, natural or synthetic rubber.

As the synthetic resin, olefin resin (PMMA) may be used, and the raw material used as synthetic rubber is made of copolymerization of acrylonitrile and butadiene, and thus nitrile butadiene rubber having strong oil resistance and abrasion resistance. , Ethylene Propylene Diene Monorer, an ethylene-propyl type dimerization monomer, Fluoroelastomer rubber with excellent heat resistance and chemical resistance, Acrylic Elastomers made of monomer acrylic ester and reactive crosslinking monomer, Silicon And oxygen-bonded silicone rubber (VMQ), fluorosilicone rubber fluorosilicone rubber (FVMQ), styrene and butadiene copolymerized with styrene butadiene rubber (Butadiene rubber), butadiene rubber (Butadiene rubber) ), Which can be selected from polymers of chloroprene rubber There. These polymers may be used alone or in combination of two or more thereof.

The synthetic rubber or mixtures between the synthetic rubbers are compounded with various compounding agents.

The synthetic rubber is excellent in the sealing (sealing) of the fluid and gas, in particular, the sealing action for special fluids and gases, such as oxygen, hydrogen, water, methanol is stable. In addition, the synthetic rubbers do not cause ion elution in the environment of the special fluid and gas, and do not deteriorate the performance of a fuel cell power generation system.

The synthetic rubber raw material in the solid state can be molded into a solid gasket by using a press molding method in which a pair of molds are installed in a compression molding machine and materials are inserted therebetween to apply pressure and heat. As such, the compression molding method using the press can easily mass-produce the solid-state gasket, and the manufacturing cost is reduced.

In addition, the synthetic rubber raw material in a solid state may be molded into a solid gasket using injection molding, which is a method of injecting a raw material into a mold woven into a predetermined shape by heating, injecting the raw material, and cooling and then separating the mold. Therefore, in this case, the solid gasket is variously manufactured in a desired shape and is most suitable for being applied to mass production.

The synthetic rubber raw material in the solid state may be molded into the solid state gasket 20 using a transfer molding method. The transfer molding method converts a plastic material into a cured state by injecting a synthetic rubber material into a closed heating mold and then transferring it. The transfer molding method is suitable for a complicated shape, and the parts of the product are homogeneous, thereby obtaining a product having a precise dimension.

On the other hand, the synthetic rubber raw material in the liquid state is a liquid injection molding process, a batch molding method in which a mixture of two or more components with different ratios of liquid resins is mixed and injected directly into a closed mold under pressure. Can be formed into a solid gasket through. The solid gasket made of the liquid injection molding process has an advantage of improving productivity and reducing costs.

Although the above advantages exist when forming the solid-state gasket separately, the gasket must be precisely attached to the exact position of the surface of the separator plate. However, since the gasket has a thin elastic strip shape, when the solid gasket is separately formed, it is difficult to attach it to the correct position of the separator plate while maintaining the exact shape.

The present invention is to provide a separate adsorption jig in order to solve this feature is characterized in that the fixed solid state gasket in a state maintained. The suction jig has a plurality of air holes, which are connected to the vacuum apparatus. The solid gasket is fixed to the adsorption jig while maintaining the shape to be disposed on the separation plate, and then bonded to the separation plate in that state.

2 is a perspective view showing a first embodiment of the suction jig of the present invention, Figure 3 is a perspective view showing a second embodiment of the suction jig of the present invention.

In the first embodiment, the suction jig 20 has a planar shape and a plurality of air holes 22 are formed on the surface thereof so that the solid state gasket 25 may be used in various shapes. The air hole 22 is connected to a pneumatic device (not shown) to fix the solid gasket 25 with suction force. When the suction force is removed, the solid gasket 25 is free and, on the contrary, the solid gasket 25 may be pushed out by applying positive pressure to the air hole 22 (by blowing air). The pneumatic device can generate or release suction and, in some cases, can generate positive pressure.

The second embodiment is provided with a gasket groove 35 corresponding to the shape of a solid gasket (25 in FIG. 2) in the suction jig 30, and an air hole 32 in the gasket groove 35. will be. When the gasket groove 35 is provided, the shape of the solid gasket 25 may be more accurately maintained.

After the solid gasket is fixed to the adsorption jig 20 or 30 as described above (S-11), an adhesive is applied to the adhesive side of the gasket or the adhesive side of the separator plate. The adhesive part of the plate means an interface at which the gasket and the separator are bonded. In addition, the adhesive is used herein to mean an adhesive and an adhesive. Although the adhesive and the adhesive may be strictly distinguished, in the present invention, the solid gasket may be fixed while maintaining the shape on the surface of the separator plate, and thus the concept of adhesion and adhesion may be collectively referred to as an adhesive.

Application of the adhesive may be made on the adhesive side of the gasket or on the adhesive side of the separator.

In case of applying adhesive on the surface of the separator plate, the adhesive should be applied only to the adhesive part to which the gasket is bonded. The adhesive part is a part of the surface of the separator plate. As a method of applying the adhesive only to a specific area, a silk screen method, a discharge method, or an ink jet method may be used, and the adhesive spray nozzle is formed to correspond to the adhesive part shape of the separator plate. Although only a part may be sprayed, it is not limited to this method. Here, the inkjet method refers to applying an adhesive in such a manner that a nozzle ejects a liquid only at a specific position like an inkjet printer. The discharging method moves a dispenser for discharging the adhesive constantly, and the discharging method will be described later with reference to FIG. 14.

Since the adhesive surface of the gasket becomes the entire bottom surface of the gasket, a stamping method of applying an adhesive to the bottom surface as a coating, or a method of applying an adhesive by rubbing a roller may be used.

4 is a conceptual diagram illustrating an adhesive coating method using a stamping method, and FIG. 5 is a conceptual diagram illustrating an adhesive coating method using a roller.

Referring to FIG. 4, in the stamping method, in the state where the solid gasket 25 is fixed to the adsorption jig 30, the adsorption jig 30 is lowered so that the adhesive surface 25a of the solid gasket 25 is the adhesive stamp 40. The adhesive is applied to the adhesive surface 25a in such a manner as to contact the adhesive. The adhesive stamp 40 may be a synthetic fiber containing an adhesive, such as a stamp of painting, or may be a container in which a liquid adhesive is contained.

Referring to FIG. 5, in the adhesive applying method using a roller, the adhesive surface of the solid gasket 25 is formed by an adhesive roller 50 having an adhesive on the surface thereof while the solid gasket 25 is fixed to the adsorption jig 20. The adhesive is applied to 25a).

In FIG. 4, the adsorption jig is illustrated based on the second embodiment, and in FIG. 5, the adsorption jig is illustrated based on the first embodiment, but the present invention is not limited thereto. The adhesive may be applied, or in the case of the second embodiment of the adsorption jig, the adhesive may be applied by a method using a roller.

Referring to FIG. 4 again, after the gasket groove is provided on the suction jig and the solid gasket is fixed to the gasket groove, the gasket groove accommodates 10 to 90% of the thickness of the solid gasket in order to perform the adhesive coating method as described above. It is preferable to make 25a protrude beyond the surface of the suction jig 30.

If the receiving thickness of the solid gasket is less than 10%, the fixed position of the solid gasket may be changed or twisted due to the pressure during stamping (or when the adhesive roller is in close contact), and the pressure at the time of stamping if the receiving thickness exceeds 90% The solid gasket may shrink and the adhesive may adhere to the surface of the suction jig.

After the adhesive is applied to the solid gasket or the separator plate (S-13), the adsorption jig fixing the solid gasket is moved to align the solid gasket and the separator plate, and the adhesive side of the solid gasket is bonded to the adhesive part of the separator plate. (S-14).

At this time, an alignment pin is provided on the suction jig and an alignment hole is provided on the separation plate, so that the solid gasket and the separation plate are aligned in such a manner as to align the alignment pin and the alignment hole. can do. In addition to the alignment pins and alignment holes that are in physical contact with each other, the adsorption jig and the separator may be arranged in a non-contact manner using a laser.

There are three methods of adhering the adhesive side of the solid gasket to the adhesive part of the separator plate.

First, in a state in which the solid gasket is fixed to the suction jig with suction force, the adhesive surface of the solid gasket and the adhesive part of the separator plate are brought into close contact with each other and pressure is applied, and then the suction force is removed to remove the suction jig.

Second, while the solid gasket is fixed to the suction jig with suction force, the suction jig is moved to bring the adhesive surface of the solid gasket into close contact with the suction jig, and then the suction force of the suction jig is removed to remove the solid gasket from the free fall. By attaching to the surface of the separator.

Third, while the solid gasket is fixed to the suction jig with suction force, the suction jig is moved to bring the adhesive surface of the solid gasket into close contact with the suction jig, and then the suction force of the suction jig is removed and a positive pressure is applied to the solid phase. The gasket is pushed to the separating plate with positive pressure to be attached.

Second and third, in the case of attaching the solid gasket free drop or pushed to a positive pressure as shown in Figure 3, as shown in Figure 6, the depth of the gasket groove 62 of the suction jig 60 of the solid gasket 25 It is formed deeper than the thickness, the surface of the adsorption jig 60 is in close contact with or close to the surface of the separator plate 68 so that the solid gasket 25 falls, so that the gasket groove 62 is moved to the separator plate 68. It is preferable to guide the position of the solid gasket (25).

7 is a flowchart illustrating a method of forming a solid gasket of a separator for a fuel cell according to a second embodiment of the present invention.

The second embodiment uses a sticker-type solid state gasket, characterized in that a solid state gasket having an adhesive layer and a release paper attached to an adhesive surface is provided.

The solid-state gasket forming method of the separator plate for fuel cells using the sticker-type solid state gasket is a three-step process as follows.

Specifically, the step of providing a solid gasket having an adhesive layer and a release paper on the adhesive surface (S-70), the step of fixing the suction paper to the suction jig while maintaining the shape of the solid gasket and separating the release paper (S-71 ), Aligning the solid gasket and the separator plate and attaching the solid gasket to the separator plate (S-72).

8 is a cross-sectional view showing the structure of a solid gasket used in the second embodiment of the present invention.

As shown, an adhesive layer 82 is formed on the adhesive surface 80a of the solid gasket 80, and a release paper 84 is attached to the surface of the adhesive layer 82 to protect the adhesive layer 82. have.

At this time, the release paper 84 is preferably larger than the area of the adhesive layer 82 so that the release paper 84 can be easily separated.

Hereinafter, the separation method of the release paper will be described.

9 illustrates a method of fixing a solid gasket to an adsorption jig and simultaneously removing the release paper.

As shown, by forming a gasket groove 92 deeper than the thickness of the solid gasket 80 in the adsorption jig 90, as shown on the left side of the figure, the adsorption jig 90 of the solid gasket 80 Placed on the upper side, the release paper 84 descends to contact the surface of the adsorption jig 90, and then provides suction force to the adsorption jig 90 to pull up the solid gasket 80 above the gasket groove 92 to the right. It is to separate the release paper 84 as shown.

After separating the release paper 84 in this manner, while the solid gasket is fixed to the adsorption jig described above with suction force, the suction jig is moved to bring the adhesive surface of the solid gasket into close contact with the adsorption jig of the adsorption jig, and then the suction force of the adsorption jig. To remove the solid gasket to be attached to the surface of the separator plate by free fall,

With the solid gasket fixed to the suction jig with suction force, move the suction jig to bring the adhesive surface of the solid gasket into close contact with the suction jig, remove the suction force of the suction jig, and apply positive pressure to lift the solid gasket. The solid gasket can be attached to the adsorption jig using a method of pushing it to the separator plate by pressure.

At this time, the depth of the gasket groove 92 is preferably in the range of 120 to 150% of the thickness of the solid gasket (80). When the depth of the gasket groove 92 is less than 120% of the thickness of the solid gasket 80, the release paper may not be separated smoothly, and the depth of the gasket groove 92 exceeds 150% of the thickness of the solid gasket 80. When the solid gasket 80 is attached when the solid gasket 80 is attached, the shape of the solid gasket 80 may be deformed.

Figure 10 shows a release paper removal method using a separate release paper removal roller.

In the illustrated embodiment, the suction jig 20 has a flat shape, and the release paper 84 has a rectangular shape covering the entire surface of the solid gasket 80.

When the release paper 84 has a form covering the entire surface of the solid gasket, the release paper 84 serves to maintain the shape of the solid gasket 80.

After fixing the solid gasket 80 with the release paper 84 attached to the adsorption jig 20 with suction force, the release paper 84 is wound by using a separate release paper removal roller 100 to remove it.

The release paper removing roller 100 is provided with a plurality of air holes 102 on the surface similar to the adsorption jig to attach the release paper 84 with suction force, and remove the release paper 84 by winding the paper.

After removing the release paper 84 in this way, the solid gasket can be attached to the separator plate using the attachment methods described in the first embodiment.

11 is a view showing a release paper removing method using a robot arm.

As shown, after holding one side of the release paper 84 with a robot arm (or clamp) to fix it, and then remove the release paper by hand, the robot arm is moved to separate / remove the release paper.

After fixing the solid gasket 80 with the release paper 84 attached to the suction jig 20 with suction force, the release paper 84 is fixed by using a separate robot arm 105 and then removed. The solid gasket 80 is fixed by suction force, and lifts and removes the release paper as if it is detached by hand by holding the release paper of the part exposed to the outside of the solid gasket 80 with a robot arm.

12 is a view showing a release paper removal method by a forceps moving along the rail.

As shown, after holding both sides of the release paper 84 with the forceps 107, and then to remove the release paper 84 by moving the forceps 107 along the rail. The moved tongs 107 are put down and release the release paper 84 in a separate place, it is operated in a way to move back to the original position to remove the next release paper (84).

13 is a flowchart illustrating a method of forming a solid state gasket of a separator for fuel cells according to a third embodiment of the present invention.

This embodiment is characterized by using a cassette which is aligned and accommodating in a plurality of layers such that the adhesive surface faces the working surface of the cassette while maintaining the shape of the solid gasket. Here, the working surface of the cassette means a surface facing the surface of the separator.

In the solid-state gasket forming method according to the present embodiment, the solid-state gasket is provided, and mounting in a plurality of layers on the cassette so that the adhesive surface facing the working surface of the cassette while maintaining the shape of the solid gasket (S- 110), the step of applying an adhesive to the adhesive side of the solid gasket or the separator plate (S-111), the step of aligning the solid gasket and the separator plate and bonding the solid gasket to the separator plate (S-112) Include.

In the step of applying the adhesive (S-111), as in the first embodiment, a stamping method, a method using a roller, a silk screen method, or the like may be used. Duplicate description of the above methods will be omitted.

14 and 15 show the structure of the cassette used in the solid-state gasket forming method according to the third embodiment of the present invention.

14 is a form that can be used in the manner in which the cassette is attached to the solid gasket at the bottom of the separator plate is located in the upper portion, Figure 14 is a separator is located in the lower portion to attach the solid gasket at the top of the separator plate It can be used in the form.

Referring to FIG. 14, in the cassette 120, a plurality of solid gaskets 25 may be provided with a mounting groove 122 that may be accommodated in a state where the solid state gaskets 25 are maintained, and a solid gasket may be formed on the bottom surface of the mounting groove 122. The push piece 125 which pushes up 25 is provided.

The left side of the figure shows a state in which the separator plate 68 is aligned with the cassette 120. In the center of the figure, the separator plate 68 descends and the solid gasket 25 protrudes over the working surface 120a of the cassette 120. ), The right side of the figure shows that the separating plate 68 with the solid gasket 25 is transferred, and the contact piece 125 is raised by the thickness of one solid gasket and the next solid gasket 25-1. ) Shows the state raised above the working surface (120a). FIG. 12 shows that the adhesive can be applied to the separator or gasket 25 and does not show the applied adhesive in the figure.

The mounting groove 122 of the cassette 120 is formed in the form of a solid gasket 25 and has a depth capable of accommodating the plurality of solid gaskets 25. In the case of Figure 12, since the upper surface (120a) of the cassette 120 is a working surface, the solid gasket 25 is accommodated so that the adhesive surface (25a) is directed upward.

The compact piece 125 serves to keep the solid gasket 25 of the uppermost layer protruding onto the working surface 120a of the cassette 120.

The adhesive is applied to the adhesive surface 25a of the solid-state gasket 25 of the uppermost layer (or adhesive is applied to the adhesive part of the separator plate), and the solid-state gasket 25 is brought into close contact with the separator plate 68 to form the solid-state gasket 25. To the separator plate 68. Then, after moving the separating plate 68 to which the solid gasket 25 is coupled, the wheat flour 125 is raised by the thickness of one solid gasket 25 so that the adhesive surface of the next solid gasket 25-1 is a cassette ( To protrude onto the working surface 120a of 120.

Referring to FIG. 15, the working surface 130a of the cassette 130 faces downward. Therefore, it is necessary to provide a separate fixing force for fixing the solid gasket 25 accommodated in the mounting groove 132. The illustrated embodiment is provided with a plurality of air holes 133 on the side wall of the mounting groove 132 to provide a suction force (negative pressure) to the air hole 133 to fix the solid gasket 25 to the mounting groove 132. .

When the solid gasket 25 is attached to the separator plate 68 using the cassette of FIG. 15, the application of the adhesive should be made to the separator plate 68. The method of applying the adhesive to the separator 68 may use the silkscreen method, the ejection method, or the inkjet method described above.

The left side of the figure shows a state in which the separator plate 68 coated with the adhesive 69 is aligned to the cassette 130, and the center of the figure releases the suction force of the air hole 133 so that the solid gaskets are lowered by their own weight. And the lowermost solid gasket 25 is attached to the separating plate 68, and the right side of the figure conveys the separating plate 68 to which the solid gasket 25 is attached and draws suction force back to the air hole 133. By providing the remaining solid gaskets 25 are shown in a fixed state in the lowered state.

When the separator 68 coated with the adhesive 69 is aligned with the cassette, the suction force of the air hole 133 is released. When the suction force is released, the plurality of solid gaskets are dropped by their own weight, and the lowermost solid gasket 25 is attached to the separator plate 68. When the attachment of the solid gasket 25 is completed, the suction hole is provided to the air hole 133 again to fix the lowered solid gasket at the position. Then, the separator plate 68 coated with the adhesive is supplied again and the lowermost solid gasket is attached to the separator plate 68 in the same manner.

In the case of the separation plate, since the rigid plate is relatively easy to transport and handle, the solid gasket is continuously supplied at a predetermined position by the cassette, and the separation plate is transferred to proceed with the process.

Using the cassettes 120 and 130 to accommodate the plurality of solid gaskets 25 may reduce the time required for the adsorption and transport of the solid gasket.

16 is a perspective view showing an ejector for applying an adhesive to a separator plate by a discharging method.

The ejector 150 is a device for applying the adhesive to the desired portion by moving the nozzle unit 152 for discharging the adhesive by a predetermined amount on the separation plate or the gasket.

The ejector 150 includes a nozzle unit 152 for discharging the adhesive and a transfer table 154 on which the object to be coated (a gasket or a separating plate) is mounted to move the nozzle unit 152 or the transfer table 154. By doing so, the adhesive is applied to a desired portion of the object to be coated.

In the illustrated embodiment, although the nozzle unit 152 is formed to move left and right, and the transfer table 154 is formed to move in the front and rear direction, the transfer table 154 is fixed and the nozzle unit 152 May be configured to move forward, backward, left, and right, or may be configured such that the nozzle unit 152 is fixed and the transfer table 154 may move forward, backward, left, and right.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments but may be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not limiting.

1 is a process flowchart of a solid-state gasket forming method of a separator for fuel cells according to a first embodiment of the present invention;

2 is a perspective view showing a first embodiment of the adsorption jig of the present invention;

3 is a perspective view showing a second embodiment of the adsorption jig of the present invention;

4 is a conceptual diagram showing an adhesive coating method using a stamping method,

5 is a conceptual view showing a method of applying an adhesive using a roller;

6 is a cross-sectional view showing a method of attaching a solid gasket;

7 is a process flowchart of a solid-state gasket forming method of a separator for fuel cells according to a second embodiment of the present invention;

8 is a cross-sectional view showing the structure of a solid gasket used in the second embodiment of the present invention;

Figure 9 is a cross-sectional view showing a method of removing the release paper at the same time fixing the solid gasket to the suction jig,

10 is a perspective view showing a release paper removal method using a separate release paper removal roller,

11 is a view showing a release paper removing method using a robot arm;

12 is a view showing a release paper removal method by the forceps moving along the rail,

13 is a process flowchart of a solid-state gasket forming method of a separator for fuel cells according to a third embodiment of the present invention;

14 and 15 are cross-sectional views showing the structure of a cassette used in the solid-state gasket forming method according to the third embodiment of the present invention.

16 is a perspective view showing an ejector for applying an adhesive to a separator plate by a discharging method.

Claims (21)

Preparing a solid gasket; Fixing the solid gasket to a suction force corresponding to a shape of the solid gasket and having a gasket groove formed to receive 10 to 90% of the thickness of the solid gasket with a suction force; Applying an adhesive to an adhesive surface of the solid gasket or an adhesive portion of the separator; And Bonding the solid gasket to the separator after aligning the solid gasket and the separator; and forming a solid gasket of the separator for a fuel cell. delete delete The method of claim 1, The adhesive is applied to the adhesive surface of the solid gasket by a stamping method, or a solid-state gasket forming method of the separator for fuel cells, characterized in that is applied using a roller. The method of claim 1, And the adhesive is applied to any one of a silk screen method, an ink jet method, and a discharge method on the adhesive part of the separator or on the adhesive surface of the solid gasket. Providing an adhesive layer and a release paper on an adhesive surface, wherein the release paper is provided with a solid gasket formed larger than an area of the adhesive layer; Fixing the adsorption jig to the adsorption jig and separating the release paper while maintaining the shape of the solid gasket; And And aligning the solid gasket and the separator and adhering the solid gasket to the separator. The adsorption jig is provided with a gasket groove corresponding to the shape of the solid gasket, the depth of the gasket groove is solid-state gasket forming method of the fuel cell separator, characterized in that the range of 100 to 200% of the thickness of the solid gasket. delete delete delete The method of claim 6, Separating the release paper is a solid-state gasket forming method of a separator plate for a fuel cell, characterized in that using a release paper removing roller having a plurality of air holes on the surface. The method of claim 6, Separating the release paper Method for forming a solid gasket of a separator plate for a fuel cell, characterized in that to remove the release paper using a robot arm or clamp. 7. The method according to claim 1 or 6, Wherein the step of adhering, after the pressure is applied in a state in which the separation plate and the solid gasket in close contact, the solid gasket forming method of the separator for fuel cell, characterized in that for removing the suction force of the suction jig. 7. The method according to claim 1 or 6, The bonding step is a solid-state gasket forming method of the separator for fuel cell, characterized in that in the state in which the separation plate and the solid gasket close, release the suction force of the suction jig to freely drop the solid gasket. 7. The method according to claim 1 or 6, Wherein the bonding step in the state in which the separation plate and the solid gasket close, the suction force of the suction jig is released and the positive pressure is applied to the solid gasket close to the separator plate, characterized in that Solid gasket formation method. delete delete delete delete delete delete delete

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