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1. (WO2010113558) SEAL COMPONENT MANUFACTURING METHOD AND MOLD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2010/113558 International Application No.: PCT/JP2010/052491
Publication Date: 07.10.2010 International Filing Date: 19.02.2010
IPC:
B29C 45/34 (2006.01) ,B29C 45/14 (2006.01) ,B29C 45/26 (2006.01) ,B29L 9/00 (2006.01) ,B29L 31/26 (2006.01) ,H01M 8/02 (2006.01) ,H01M 8/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
26
Moulds
34
having venting means
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14
incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
26
Moulds
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
L
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
9
Layered products
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
L
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
31
Other particular articles
26
Sealing devices, e.g. packaging for pistons or pipe joints
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8
Fuel cells; Manufacture thereof
02
Details
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8
Fuel cells; Manufacture thereof
10
Fuel cells with solid electrolytes
Applicants:
渡部 茂 WATANABE Shigeru [JP/JP]; JP (UsOnly)
NOK株式会社 NOK CORPORATION [JP/JP]; 東京都港区芝大門1丁目12番15号 12-15, Shibadaimon 1-chome, Minato-ku, Tokyo 1058585, JP (AllExceptUS)
Inventors:
渡部 茂 WATANABE Shigeru; JP
Agent:
野本 陽一 NOMOTO Yoichi; 東京都港区西新橋2丁目8番4号 寺尾ビル 野本国際特許事務所 NOMOTO INTERNATIONAL PATENT OFFICE, Terao Building, 8-4, Nishi-Shinbashi 2-chome, Minato-ku, Tokyo 1050003, JP
Priority Data:
2009-08507431.03.2009JP
Title (EN) SEAL COMPONENT MANUFACTURING METHOD AND MOLD
(FR) PROCÉDÉ ET MOULE DE FABRICATION DE JOINT D'ÉTANCHÉITÉ
(JA) シール部品の製造方法及び金型
Abstract:
(EN) The molding pressure in a cavity (3) when a molding rubber material (4) is filled thereinto is appropriately maintained, thereby effectively preventing the occurrence of defective molding. Specifically, a base material (11) is set and clamped between split molds (22, 23) of a mold (2). The molding rubber material (4) is injected into the cavity (3), the cavity having an endless shape and defined between the surface of the base material (11) and the inner surface of the split mold (22) facing thereto. The injection amount thereof is set to an amount such that after the cavity (3) is filled with the molding rubber material (4), the molding rubber material flows from an air vent hole (36) bored at a confluence position (3a) of the molding rubber material (4) in the cavity (3) into a surplus material reservoir (38) provided downstream from the air vent hole and the surplus material reservoir (38) is not filled therewith. The pressure drop due to flow resistance is caused to the molding rubber material (4) flowing from the air vent hole (36) into the surplus material reservoir (38), and by the pressure drop, the pressure in the cavity (3) is maintained at a value higher than or equal to the lower limit of the pressure required to mold a gasket (12) and lower than the lower limit of the pressure at which leakage from the cavity (3) occurs.
(FR) Le procédé selon l'invention consiste à maintenir efficacement la pression de moulage dans une cavité (3) quand une matière de caoutchouc pour moulage (4) est versée à l'intérieur, ce qui empêche efficacement l'apparition d'un moulage défectueux. Plus précisément, un matériau de base (11) est encastré entre les moitiés (22, 23) d'un moule (2). Le matériau de caoutchouc pour moulage (4) est injecté dans la cavité (3), celle-ci ayant une forme sans fin et étant définie entre la surface du matériau de base et la surface interne des moitiés de moule (22) en regard de celle-ci. La proportion d'injection est définie à une proportion telle que, après que la cavité (3) est remplie du matériau de caoutchouc pour moulage (4), ce matériau s'écoule depuis un trou d'aération (36) percé à une position de confluence (3a) entre le matériau de caoutchouc pour moulage (4) dans la cavité (3) et un réservoir de matériau en surplus (38) positionné en aval de ce trou d'aération (3), et que le réservoir de matériau en surplus (38) n'est pas rempli avec le matériau. Une baisse de pression due à la résistance à l'écoulement est subie par le matériau de caoutchouc pour moulage (4) s'écoulant depuis le trou d'aération (36) dans le réservoir de matériau en surplus (38), et sous l'effet de cette baisse de pression, la pression dans la cavité (3) étant maintenue à une valeur supérieure ou égale à la limite inférieure de la pression nécessaire pour mouler un joint d'étanchéité (12) et inférieure à la limite inférieure de la pression à laquelle se produit une fuite depuis la cavité (3).
(JA)  成形用ゴム材料4の充填時におけるキャビティ3内の成形圧力を適正に保持し、成形不良の発生を有効に防止することを目的とする。このため、基材11を金型2の分割型22,23間にセットして型締めし、前記基材11の表面とこれに対向する分割型22の内面との間に画成される無端形状のキャビティ3に成形用ゴム材料4を射出し、その射出量を、成形用ゴム材料4がキャビティ3に充満した後、このキャビティ3内における成形用ゴム材料4の合流位置3aに開口したエアベント孔36からその下流側に設けた余剰材料溜まり38へ流れ込むと共にこの余剰材料溜まり38に充満しない量とし、エアベント孔36から余剰材料溜まり38へ流れ込む成形用ゴム材料4に流動抵抗による圧力降下を生じさせ、この圧力降下によって、キャビティ3の内圧をガスケット12の成形に必要な圧力の下限値以上でかつキャビティ3からの漏れ発生圧力の下限値未満に保持する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)