WO2016194573A1 - ガスケット及びその製造方法 - Google Patents
ガスケット及びその製造方法 Download PDFInfo
- Publication number
- WO2016194573A1 WO2016194573A1 PCT/JP2016/064078 JP2016064078W WO2016194573A1 WO 2016194573 A1 WO2016194573 A1 WO 2016194573A1 JP 2016064078 W JP2016064078 W JP 2016064078W WO 2016194573 A1 WO2016194573 A1 WO 2016194573A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gasket
- carrier sheet
- main body
- mold
- gasket body
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/586—Moulds with a cavity increasing in size during foaming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2608—Mould seals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
- F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/108—Special methods for making a non-metallic packing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14213—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure deforming by gas or fluid pressure in the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C2045/14459—Coating a portion of the article, e.g. the edge of the article injecting seal elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies
- B29C2045/1477—Removable inserts, e.g. the insert being peeled off after moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a gasket according to a sealing technique and a manufacturing method thereof.
- the gasket of the present invention is used, for example, as a fuel cell gasket or as a general gasket for other uses.
- Gaskets for fuel cells include rubber-only gaskets made of a single rubber-like elastic (rubber) gasket, a separator-integrated gasket in which a rubber-like elastic gasket is integrally molded with a separator, and a rubber-like elastic gasket.
- rubber-only gaskets made of a single rubber-like elastic (rubber) gasket
- separator-integrated gasket in which a rubber-like elastic gasket is integrally molded with a separator
- a rubber-like elastic gasket There are various types of gaskets such as a GDL integrated gasket formed integrally with GDL (gas diffusion layer).
- the rubber-only type gasket is configured as shown in FIG. 7, for example.
- the gasket 11 as a whole has a planar shape (flat plate shape), and an outer peripheral seal portion 12 that seals the periphery of the reaction surface of the fuel cell over the entire circumference is provided in a frame shape. Further, since it is necessary to partition the reaction surface of the fuel cell and each manifold portion, the inner seal portion 13 is integrally formed inside the outer peripheral seal portion 12.
- the cross-sectional shape of the gasket 11 is circular as shown in FIG.
- JP 2014-60133 A (refer to gasket 3 in FIG. 1 and the like)
- the fuel cell gasket 11 has room for further improvement in the following points.
- the fuel cell gasket 11 has a size of, for example, an outer shape of about 400 mm ⁇ 300 mm, and a small cross-sectional shape (wire diameter) (for example, a wire diameter of about 1 mm). Accordingly, the gasket 11 alone is likely to be twisted during conveyance or stacking, and its handling workability (handling property) is not good.
- the present invention aims to improve handling workability of rubber-only gaskets.
- the gasket of the present invention comprises a combination of a rubber-only type gasket main body and a carrier sheet made of a resin film that holds the gasket main body in a non-adhered state, from the carrier sheet to the gasket main body.
- the carrier sheet is provided with an air inlet for allowing air to flow between the carrier sheet and the gasket body when the carrier sheet is removed (Claim 1).
- the workability of the gasket is improved by holding the rubber-only type gasket body with a carrier sheet made of a resin film. Since the gasket body is not bonded to the carrier sheet, it can be removed from the carrier sheet during stacking. When removing the gasket body from the carrier sheet, the gasket body can be easily removed (peeled) from the carrier sheet by injecting (blowing) air between the carrier sheet and the gasket body from the air inlet provided in the carrier sheet. Is possible.
- the gasket body is flat (flat) and the carrier sheet made of resin film is also flat (flat), the gasket body is firmly attached to the carrier sheet only by placing the gasket body on the carrier sheet. There is concern that it cannot be retained. Therefore, in order to take measures against this, a gasket holding portion having a shape deformed along the outer shape of the gasket main body is provided in a portion of the carrier sheet that overlaps with the gasket main body on a plane, and a part of the gasket main body is placed in the gasket holding portion.
- the gasket body is positioned on the plane with respect to the carrier sheet, so that the gasket body can be firmly held by the carrier sheet.
- the air inflow port is provided at the bottom surface position of the gasket holding portion.
- the air inlet may be provided at a position overlapping the overhanging portion of the carrier sheet on the plane (Claim 3).
- the gasket of the present invention is used, for example, as a fuel cell gasket. Since the fuel cell has a large number of stacked layers, the gasket is required to have a small thickness, and the gasket having a small thickness is easily twisted, so that handling workability is not good. Therefore, in the field of gaskets for fuel cells that are thin and easy to twist in this way, combining the gasket body with a carrier sheet made of a resin film to improve handling operability is extremely effective in improving the efficiency of stacking operations. (Claim 4).
- the gasket manufacturing method includes the steps of clamping the mold with a planar carrier sheet sandwiched between the parting part of the mold for molding the gasket body, and molding the gasket body with the mold.
- the carrier sheet was initially flat, it is partly three-dimensionalized using the molding material filling pressure and fits with the gasket body at the three-dimensional part, so that it has high holding power.
- a hollow protrusion is formed on a part of the plane of the carrier sheet, and the air inlet is formed by cutting this protrusion in the subsequent process.
- holes may be provided in advance in the carrier sheet, and the holes provided in advance may be used as the air inlet.
- the handling operability of the rubber-only type gasket can be improved.
- the air inlet is provided in the carrier sheet, it is easy to remove the gasket body from the carrier sheet.
- FIG. 1 is a process explanatory diagram of a method for manufacturing a gasket according to an embodiment of the present invention.
- Process explanatory drawing of the manufacturing method of the gasket which concerns on the Example of this invention 2 Process explanatory drawing of the manufacturing method of the gasket concerning other examples of the present invention.
- It is a figure which shows the gasket which concerns on a prior art example (A) is the top view, (B) is an BB expanded sectional view in (A).
- the present invention includes the following embodiments.
- the present invention relates to a gasket with a carrier sheet (film carrier).
- this gasket is a structure which can remove a carrier film at the time of stacking.
- Stackability is improved by the carrier film.
- the carrier film at the center or end of the gasket is used for automatic conveyance during stacking assembly. Since the gasket is straightened by the carrier film, there is no problem of twisting. The carrier film can be removed during stacking, leading to a reduction in weight.
- a peeling hole is provided in the gasket with the carrier sheet.
- the peeling hole partially has a hole in the film, and the gasket is peeled from the film by blowing air into the hole.
- the hole has a size of ⁇ 3 mm, for example, and a plurality of holes are provided at intervals of 5 cm.
- a method for producing a hole there are a method for producing a hole by deforming the film into a protruding shape and cutting the part, and a method for making a hole in the film in advance.
- the gasket 11 is a combination of a rubber-only type gasket main body 21 and a carrier sheet (film carrier) 31 made of a resin film that holds the gasket main body 21 in a non-adhered state. It is configured.
- the gasket body 21 is used as a fuel cell gasket.
- the gasket main body 21 is formed in a flat shape (flat plate shape) by a predetermined rubber-like elastic body (for example, VMQ, PIB, EPDM, FKM, etc.), and as a component thereof, the entire circumference of the reaction surface of the fuel cell is provided.
- a frame-shaped outer peripheral seal portion 22 for sealing over and an inner seal portion 23 for sealing the reaction surface of the fuel cell and the partition portion of each manifold portion are integrally provided.
- the cross-sectional shape of the gasket body 21 is, for example, a circular cross section as shown in FIG.
- Reference numeral 24 denotes a penetration portion (space portion) that penetrates the gasket body 21 in the thickness direction.
- the gasket body 21 is formed into a flat rectangular shape, and has a planar size of, for example, an outer shape of approximately 400 mm (vertical) ⁇ approximately 300 mm (horizontal), and a thickness, that is, a wire diameter of approximately 1 mm.
- the carrier sheet 31 is formed into a flat shape (flat plate shape) with a predetermined resin film, and is formed into a flat rectangular shape that is slightly larger than the gasket main body 21.
- a polypropylene film having a thickness of 0.2 mm is used as the resin film, and this is cut into a planar shape having the above-described size.
- general resin materials such as polyethylene and polystyrene can be used as the resin film.
- the thickness of the film is preferably about 0.1 mm to 0.3 mm, although it depends on the wire diameter and cross-sectional shape of the gasket body 21.
- a part of the gasket body 21 in the thickness direction is accommodated in the gasket holding portion 32.
- the cross-sectional shape of the gasket body 21 is circular, and accordingly, the cross-sectional shape of the gasket holding portion 32 is circular arc-shaped (semi-circular).
- the gasket body 21 Since the gasket body 21 is not bonded to the carrier sheet 31, it can be removed from the carrier sheet 31 during stacking. However, when the gasket body 21 is molded with the carrier sheet 31 inserted into the mold 41 for molding the gasket body 21 as will be described later, the molded gasket body 21 has adhesiveness due to the material. As a result, the gasket main body 21 may be stuck to the carrier sheet 31. Adhesion is such that the adhesion is so small that it can be removed by the chucking device. Therefore, in this case, the rubber-only type gasket main body 21 is non-adhered to the carrier sheet 31 made of a resin film, but sticks in a peelable manner.
- An inflow port 34 is provided, and in the present embodiment, the air inflow port 34 is provided at the bottom surface position of the gasket holding portion 32.
- a plurality of air inlets 34 are provided along the longitudinal direction of the gasket holding portion 32.
- the air inlets 34 are respectively provided at positions corresponding to the 14 corners (4 locations) and the central portion (2 locations) of the longitudinal side and the locations (8 locations) where the outer peripheral seal portion 22 and the inner seal portion 23 intersect (8 locations). Is provided.
- the rubber-only type gasket main body 21 is held by the carrier sheet 31 made of a resin film, so that the gasket main body 21 is hardly twisted when the gasket 11 is transported and is easy to transport. Further, since the gasket body 21 is not bonded to the carrier sheet 31, the gasket body 21 can be easily detached from the carrier sheet 31 during stacking. Therefore, the workability of handling the gasket 11 can be improved.
- the carrier sheet 31 is provided with a three-dimensional gasket holding part 32 and a part of the gasket main body 21 is accommodated in the gasket holding part 32, the gasket main body 21 is positioned on the plane with respect to the carrier sheet 31. Is done. Therefore, the gasket body 21 is not displaced from the carrier sheet 31 when the gasket 11 is transported, so that the gasket body 21 can be firmly held by the carrier sheet 31.
- the air inlet 34 is provided in the carrier sheet 31, when the gasket main body 21 is removed from the carrier sheet 31, air is introduced (blowed) into the carrier sheet 31 and the gasket main body 21 from the air inlet 34.
- the gasket body 21 can be easily removed (peeled) from the carrier sheet 31. Therefore, it is possible to provide a gasket product in which the gasket body 21 can be easily detached from the carrier sheet 31 while the gasket body 21 is firmly held by the carrier sheet 31.
- the cross-sectional shape of the gasket body 21 and the corresponding cross-sectional shape of the gasket holding portion 32 may vary depending on the use conditions of the gasket body 21 and may be as follows, for example.
- a seal lip 25 having a circular arc shape is integrally formed on the upper surface of the gasket body 21 having a rectangular cross section.
- the cross sectional shape of the gasket holding portion 32 is also a square cross section.
- an air inlet 34 is provided at the planar bottom of the gasket holding part 32.
- a seal lip 25 having a circular arc shape is integrally formed on the upper surface of a gasket body 21 having a rectangular cross section, and a flat projecting portion 26 is formed on a side surface portion of the gasket body 21. It is integrally molded.
- the cross sectional shape of the gasket holding portion 32 is also a square cross section.
- An air inflow port 34 is provided at a position on the carrier sheet 31 on the side of the gasket holding portion 32 so as to overlap the protruding portion 26 on a plane.
- the gasket manufacturing method according to this example is to manufacture the gasket 11 shown in FIG. In manufacturing, a mold for injection molding the rubber-only type gasket main body 21 is used.
- a planar carrier sheet 31 having a predetermined size is prepared. As shown in FIG. 3A, the carrier sheet 31 is sandwiched between the parting portions 44 of the mold 41 and the mold is placed. 41 is clamped.
- the mold 41 has a combination of an upper mold (one divided mold) 42 and a lower mold (the other divided mold) 43, and the cavity section 45 corresponds to the parting section 44 of both molds 42, 43, for example, half each. Is provided. Since the entire surface of the carrier sheet 31 is initially flat, the carrier sheet 31 is in a state of crossing the cavity portion 45. On the bottom surface of the cavity portion 45 in the lower mold 43, a projection forming portion 46 for forming a hollow protrusion 35 to be the air inlet 34 into the carrier sheet 31 later is provided as a part of the cavity portion 45. ing.
- the gasket body 21 is molded by filling the cavity portion 45 with a molding material for molding the gasket body 21 and heating.
- a part of the carrier sheet 31 on the plane (a portion in the cavity) is pressed against the inner surface of the cavity portion 45 by the molding material filling pressure, and is formed along the inner surface of the cavity portion 45.
- the gasket holding portion 32 and the hollow projection portion 35 are formed.
- the mold is opened, and the gasket body 21 and the carrier sheet 31 are simultaneously taken out from the mold 41 as shown in FIG.
- the removed gasket body 21 and carrier sheet 31 are in a combined state in which the gasket body 21 is held by the carrier sheet 31.
- the hollow protrusion 35 is cut (cut) from the carrier sheet 31 together with the rubber filled therein, thereby forming an air inlet 34 in the carrier sheet 31,
- the manufacture of the gasket 11 is completed through the above steps.
- the gasket body 21 and the carrier sheet 31 are transported and stored in a state where they are combined with each other.
- the gasket main body 21 held by the carrier sheet 31 is less likely to be twisted, so that the handling workability is improved as compared with the case where the gasket main body 21 is handled alone.
- the air inlet 34 is provided in the carrier sheet 31 as described above, when the gasket main body 21 is removed from the carrier sheet 31, air is caused to flow between the carrier sheet 31 and the gasket main body 21 from the air inlet 34. By (blowing), the gasket main body 21 can be easily removed (peeled) from the carrier sheet 31. Therefore, it is possible to provide a gasket product in which the gasket body 21 can be easily detached from the carrier sheet 31 while the gasket body 21 is firmly held by the carrier sheet 31.
- the air inlet 34 may be provided in advance at a predetermined position of the carrier sheet 31, as shown in FIG.
- a closing projection 47 that engages and closes the air inlet 34 is formed on the party of the mold 41 (lower mold 43). It is preferable to provide it on the surface.
- the carrier sheet 31 is attracted and fixed to the base side by a vacuuming device or the like, and the gasket body 21 is grasped and lifted by a chucking device or the like, and is moved to a predetermined position. Move.
- the gasket main body 21 that is not twisted is easily grasped by a chucking device or the like, and the work can be smoothly advanced.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gasket Seals (AREA)
- Fuel Cell (AREA)
Abstract
Description
(1)本発明は、キャリアシート(フィルムキャリア)付きガスケットに係る。
(2)ラバーオンリーガスケット作製時にキャリア用のフィルムを同時成形したキャリアシート付きガスケット。尚、本ガスケットはスタッキング時にキャリアフィルムを取り外せる構成である。
(3)キャリアフィルムによりスタック組み付け性が向上する。ガスケット中央もしくは端部のキャリアフィルムをスタッキング組み付け時の自動搬送で使用する。キャリアフィルムによりガスケットが矯正されているため、捩れの問題がない。スタッキング時にキャリアフィルムを取り外せるため、重量の低減につながる。
(4)キャリアシート付きガスケットに剥離用の穴を設ける。
(5)剥離用の穴は、部分的にフィルムに穴を有しているものであり、その穴にエアを吹き込むことでフィルムからガスケットを剥離する。
(6)穴は例えば、φ3mmの大きさとし、5cm間隔で複数設ける。
(7)穴の作製方法としては、フィルムを突起形状に変形させ、その部分を切り取ることで穴を作製する方法や、フィルムにあらかじめ穴をあけておく方法がある。
21 ガスケット本体
22 外周シール部
23 内側シール部
24 貫通部
25 シールリップ
26 張り出し部
31 キャリアシート
32 ガスケット保持部
33 空間部
34 エア流入口
35 突起部
41 金型
42 上型
43 下型
44 パーティング部
45 キャビティ部
46 突起成形部
47 閉塞用突起
Claims (5)
- ラバーオンリータイプのガスケット本体と、前記ガスケット本体を非接着状態で保持する樹脂フィルムよりなるキャリアシートとの組み合わせよりなり、
前記キャリアシートから前記ガスケット本体を取り外すときに前記キャリアシートおよび前記ガスケット本体間にエアを流入させるためのエア流入口を前記キャリアシートに設けたことを特徴とするガスケット。 - 請求項1記載のガスケットにおいて、
前記キャリアシートにおける前記ガスケット本体と平面上重なる部位に、前記ガスケット本体の外形形状に沿って変形した立体形状のガスケット保持部が設けられ、前記ガスケット本体はその厚み方向一部が前記ガスケット保持部に収められ、前記ガスケット保持部の底面位置に前記エア流入口が設けられていることを特徴とするガスケット。 - 請求項1記載のガスケットにおいて、
前記キャリアシートにおける前記ガスケット本体と平面上重なる部位に、前記ガスケット本体の外形形状に沿って変形した立体形状のガスケット保持部が設けられ、前記ガスケット本体はその厚み方向一部が前記ガスケット保持部に収められ、前記ガスケット本体の側面に張り出し部が設けられ、前記キャリアシートにおける前記張り出し部と平面上重なる位置に前記エア流入口が設けられていることを特徴とするガスケット。 - 請求項1乃至3の何れかに記載したガスケットにおいて、
前記ガスケット本体は、燃料電池スタックに組み込まれる燃料電池用ガスケットとして用いられることを特徴とするガスケット。 - 請求項1乃至4の何れかに記載したガスケットを製造する方法であって、
前記ガスケット本体を成形する金型のパーティング部に平面状の前記キャリアシートを挟み込んだ状態で前記金型を型締めする工程と、
前記金型で前記ガスケット本体を成形し、このとき成形材料充填圧力で前記キャリアシートの平面上一部を金型キャビティ内面に沿って変形させることにより前記ガスケット保持部を成形する工程と、
前記ガスケット本体の成形後、型開きしてから、前記ガスケット本体および前記キャリアシートを同時に前記金型から取り出す工程と、を順次実施し、
前記金型で前記ガスケット本体を成形する工程で前記キャリアシートの平面上一部に中空の突起部を成形し、のちの工程で前記突起部をカットすることにより前記エア流入口を形成することを特徴とするガスケットの製造方法。
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EP16803010.4A EP3306147B1 (en) | 2015-06-04 | 2016-05-12 | Gasket and method for producing same |
US15/578,619 US10465798B2 (en) | 2015-06-04 | 2016-05-12 | Gasket and method of manufacturing the same |
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CN107407416B (zh) * | 2015-04-24 | 2019-08-06 | Nok株式会社 | 密封垫成型品及其制造方法 |
EP3306148B1 (en) * | 2015-06-04 | 2020-01-01 | NOK Corporation | Gasket and method for producing same |
JP6795349B2 (ja) * | 2015-11-10 | 2020-12-02 | Nok株式会社 | キャリアフィルム付きガスケットの取り扱い方法 |
JP6673678B2 (ja) * | 2015-12-03 | 2020-03-25 | Nok株式会社 | キャリアフィルム付きガスケット及びその製造方法 |
US10960585B2 (en) | 2015-12-24 | 2021-03-30 | Nok Corporation | Gasket, method for producing same, and method for handling same |
JP6325041B2 (ja) * | 2016-08-31 | 2018-05-16 | 三菱重工サーマルシステムズ株式会社 | スクロール流体機械およびチップシール |
EP3534045B1 (en) * | 2016-10-27 | 2023-01-25 | NOK Corporation | Gasket and method for manufacturing same |
CN108461776A (zh) * | 2017-12-29 | 2018-08-28 | 上海神力科技有限公司 | 一种燃料电池电堆用密封垫及其制备方法 |
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