Metal mold for injection molding of framed glass and manufacturing method for framed glass
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-039/18
B29C-045/14
출원번호
US-0936479
(2009-05-01)
등록번호
US-8992209
(2015-03-31)
우선권정보
JP-2008-124468 (2008-05-12)
국제출원번호
PCT/JP2009/058550
(2009-05-01)
§371/§102 date
20101005
(20101005)
국제공개번호
WO2009/139308
(2009-11-19)
발명자
/ 주소
Nakata, Osamu
Takayama, Mitsuhiro
출원인 / 주소
Central Glass Company, Limited
대리인 / 주소
Crowell & Moring LLP
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
Disclosed herein is an injection molding die used for producing a frame-mounted plate glass by injection molding. The die is characterized in that an auxiliary cavity is provided at a position to exposed a surface of a plate glass and communicated with a cavity for a frame through a communication op
Disclosed herein is an injection molding die used for producing a frame-mounted plate glass by injection molding. The die is characterized in that an auxiliary cavity is provided at a position to exposed a surface of a plate glass and communicated with a cavity for a frame through a communication opening, the cavity for the frame being provided at position facing a vehicle inside surface of the plate glass. When the die is practically used for injection molding, a load applied to a peripheral portion of the plate glass during the injection molding is reduced, so that when the frame is molded onto the plate glass by injection molding, undesired breakage of the plate glass is suppressed.
대표청구항▼
1. An injection molding die used for producing, by injection molding, a frame-mounted plate glass that comprises a plate glass and a plastic frame integrally molded to a peripheral portion of the plate glass, the injection molding die comprising: a lower die that is set to face a vehicle inside surf
1. An injection molding die used for producing, by injection molding, a frame-mounted plate glass that comprises a plate glass and a plastic frame integrally molded to a peripheral portion of the plate glass, the injection molding die comprising: a lower die that is set to face a vehicle inside surface of the plate glass;an upper die that is set on the lower die in a manner to face a vehicle outside surface of the plate glass; anda series of a cavity, an auxiliary cavity and a narrowed communication opening of the lower die arranged to face the peripheral portion of the plate glass when the plate glass is set between the lower and upper dies,wherein the narrowed communication opening is arranged between the cavity and the auxiliary cavity to communicate between the cavity and the auxiliary cavity,wherein the cavity, the auxiliary cavity and the narrowed communication opening overlap the peripheral portion of the glass plate in a direction perpendicular to the vehicle inside surface of the plate glass,wherein the auxiliary cavity and the narrowed communication opening are arranged to expose only to the vehicle inside surface of the plate glass,wherein an end of the narrowed communication opening adjacent to the cavity is located away from an outer edge of the plate glass a distance greater than twice a thickness of the narrowed communication opening in a direction perpendicular to the vehicle inside surface of the plate glass, anda ratio (w1+w2+w3)/w4 is 0.8 to 1.2 wherein w1 is a width of the cavity for the frame which is provided at a position facing the vehicle inside surface of the plate glass, w2 is a width of the communication opening, w3 is a width of the auxiliary cavity and w4 is a width of cavity for a frame which is provided at a position facing a vehicle outside surface of the plate glass. 2. An injection molding die as claimed in claim 1, which is further characterized in that a thickness of the auxiliary cavity is 1.0 to 5.0 mm. 3. An injection molding die as claimed in claim 1, which is further characterized in that the auxiliary cavity is provided with a gate through which the melted resin is injected into the cavity for the frame from a runner. 4. A method for producing a frame-mounted plate, the method glass, the method comprising: applying a primer treatment to a glass surface to which the frame is to be mounted;placing the plate glass in an injection molding die in such a manner that a surface of the plate glass which has not been treated with the primer faces the auxiliary cavity; andcarrying out the injection molding by using the injection molding die, wherein the injection molding die comprises: a lower die that is set to face a vehicle inside surface of the plate glass;an upper die that is set on the lower die in a manner to face a vehicle outside surface of the plate glass; anda series of a cavity, an auxiliary cavity and a narrowed communication opening of the lower die arranged to face the peripheral portion of the plate glass when the plate glass is set between the lower and upper dies, wherein the narrowed communication opening is arranged between the cavity and the auxiliary cavity to communicate between the cavity and the auxiliary cavity,the cavity, the auxiliary cavity and the narrowed communication opening overlap the peripheral portion of the glass plate in a direction perpendicular to the vehicle inside surface of the plate glass,the auxiliary cavity and the narrowed communication opening are arranged to expose only to the vehicle inside surface of the plate glass,an end of the narrowed communication opening adjacent to the cavity is located away from an outer edge of the plate glass a distance greater than twice a thickness of the narrowed communication opening in a direction perpendicular to the vehicle inside surface of the plate glass, anda ratio (w1+w2+w3)/w4 is 0.8 to 1.2 wherein w1 is a width of the cavity for the frame which is provided at a position facing the vehicle inside surface of the plate glass, w2 is a width of the communication opening, w3 is a width of the auxiliary cavity and w4 is a width of cavity for a frame which is provided at a position facing a vehicle outside surface of the plate glass. 5. The method as claimed in claim 4, wherein a thickness of the auxiliary cavity is 1.0 to 5.0 mm. 6. The method as claimed in claim 4, wherein the auxiliary cavity is provided with a gate through which the melted resin is injected into the cavity for the frame from a runner.
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이 특허에 인용된 특허 (2)
Leone Massimo (Vasto ITX) Paudice Ciro (Vasto ITX), Method and device for the manufacture of a sealing gasket on the rim of a sheet of glass.
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