IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0860414
(2007-09-24)
|
등록번호 |
US-7540989
(2009-07-01)
|
우선권정보 |
KR-10-2005-0024356(2005-03-24) |
발명자
/ 주소 |
|
대리인 / 주소 |
Knobbe Martens Olson & Bear LLP
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
2 |
초록
▼
The molding apparatus includes a cavity mold with a cavity surface for defining a cavity in which a molten injection material is injected, and a core mold with a core surface for defining the cavity upon engagement with the cavity mold. The core mold has an intermediate core mold plate having the co
The molding apparatus includes a cavity mold with a cavity surface for defining a cavity in which a molten injection material is injected, and a core mold with a core surface for defining the cavity upon engagement with the cavity mold. The core mold has an intermediate core mold plate having the core surface and a support plate. A guide pin inserted into a guide hole formed in the cavity mold and fitted through the intermediate core mold plate to allow the intermediate core mold plate to be moved only in a forward and backward direction is fixed to the support plate. A first spring is installed between the intermediate core mold plate and the support plate, a first heating means is installed to a parting surface of the intermediate core mold plate and a cooling means is installed to the support plate.
대표청구항
▼
What is claimed is: 1. A method of injection molding, the method comprising: providing an injection molding apparatus comprising: a first mold comprising a first cavity surface, a second mold comprising: a heating plate comprising a first surface, a second surface facing away from the first surface
What is claimed is: 1. A method of injection molding, the method comprising: providing an injection molding apparatus comprising: a first mold comprising a first cavity surface, a second mold comprising: a heating plate comprising a first surface, a second surface facing away from the first surface, and at least one channel arranged in a body of the heating plate between the first and second surfaces, wherein the first surface comprises a second cavity surface opposing the first cavity surface, a plurality of heating extensions passing through the at least one channel and configured to generate heat for heating the heating plate, and a cooling plate comprising a cooling surface facing the heating plate; controlling the plurality of heating extensions so as to heat the heating plate; moving the heating plate relative to the first mold so as to form the molding cavity between the first and second cavity surfaces with or without additional surface; injecting a moldable material into the molding cavity; and moving the cooling plate relative to the heating plate so as to contact the cooling surface with the second surface of the heating plate. 2. The method of claim 1, further comprising: moving the heating plate relative to the first mold so as to separate the moldable material from one of the first and second cavity surfaces; and moving the cooling plate relative to the heating plate so as to separate the cooling surface from the second surface of the heating plate. 3. The method of claim 1, wherein the cooling plate comprises a conduit for circulating a coolant therethrough, wherein the method further comprises circulating the coolant through the conduit. 4. The method of claim 3, wherein controlling comprises turning on the plurality of heating extensions and turning off the plurality of heating extensions, wherein circulating the coolant is initiated before turning off the plurality of heating extensions. 5. The method of claim 1, wherein controlling comprises turning on the plurality of heating extensions and turning off the plurality of heating extensions, wherein turning on the plurality of heating extensions occurs prior to forming the molding cavity. 6. The method of claim 1, wherein controlling comprises turning on the plurality of heating extensions and turning off the plurality of heating extensions, wherein turning off the plurality of heating extensions occurs after forming the molding cavity. 7. The method of claim 1, wherein controlling comprises turning on the plurality of heating extensions and turning off the plurality of heating extensions, wherein turning off the plurality of heating extensions occurs after injecting the moldable material into the molding cavity. 8. The method of claim 1, wherein controlling comprises turning on the plurality of heating extensions and turning off the plurality of heating extensions, wherein turning off the plurality of heating extensions occurs while injecting the moldable material into the molding cavity. 9. The method of claim 1, wherein the at least one channel is at least one groove formed into the second surface of the heating plate. 10. The method of claim 1, wherein a metallic material is interposed between a first one of the plurality of heating extensions and the body within the at least one channel for heat transfer from the first heating extension to the body. 11. The method of claim 1, wherein at least two of the plurality of heating extensions extend generally parallel to each other. 12. The method of claim 1, wherein the plurality of heating extensions are integrated in a single piece heater. 13. The method of claim 1, wherein the plurality of heating extensions comprises at least two substantially linear extensions and at least one curved extension interconnecting the at least two substantially linear extensions. 14. The method of claim 1, wherein the plurality of heating extensions are electrically connected via a conductive line. 15. The method of claim 1, wherein two or more of the plurality of heating extensions are independently controlled. 16. The method of claim 1, wherein at least two of the plurality of heating extensions are at different distances from the second cavity surface in a direction of relative movement of the cooling plate. 17. A method of injection molding, the method comprising: providing an injection molding apparatus comprising: a first mold comprising a first cavity surface, a second mold comprising: a heating plate comprising a second cavity surface opposing the first cavity surface, and at least one channel arranged in a body of the heating plate, a plurality of heating extensions passing through the at least one channel, and a cooling plate comprising a cooling surface facing the heating plate; moving the heating plate relative to the first mold so as to form the molding cavity between the first and second cavity surfaces with or without additional surface; generating heat from the plurality of heating extensions, thereby heating the heating plate; injecting a moldable material into the molding cavity; moving the cooling plate relative to the heating plate such that the cooling surface contacts the heating plate; and cooling the cooling plate so as to enhance heat-transfer from the heating plate to the cooling plate. 18. The method of claim 17, wherein cooling is initiated prior to contacting the cooling surface with the heating plate. 19. The method of claim 17, wherein cooling is initiated prior to generating heat. 20. The method of claim 17, wherein generating heat in the heating plate is initiated prior to forming the molding cavity. 21. The method of claim 17, wherein generating heat in the heating plate ends after injecting the moldable material into the molding cavity. 22. The method of claim 17, wherein the at least one channel is at least one groove formed into the second surface of the heating plate. 23. The method of claim 17, wherein a metallic material is interposed between a first one of the plurality of heating extensions and the body within the at least one channel for heat transfer from the first heating extension to the body. 24. The method of claim 17, wherein at least two of the plurality of heating extensions extend generally parallel to each other. 25. The method of claim 17, wherein the plurality of heating extensions are integrated in a single piece heater. 26. The method of claim 17, wherein the plurality of heating extensions comprises at least two substantially linear extensions and at least one curved extension interconnecting the at least two substantially linear extensions. 27. The method of claim 17, wherein at least two of the plurality of heating extensions are at different distances from the second cavity surface in a direction of relative movement of the cooling plate. 28. The method of claim 17, wherein two or more of the plurality of heating extensions are independently controlled.
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