| 摘要 |
Disclosed herein is a mold device for forming a product using molten molding material. In the present invention, parting surfaces ( 54 ) and ( 64 ) of the first and second molds ( 50 ) and ( 60 ) are brought into contact with each other and, thereafter, molten molding material is injected into cavities ( 52 ) and ( 62 ). At this time, carbonized gas is continuously discharged along the parting surfaces through a continuous gas discharge circuit in a short time, without stagnating in the cavities. Preferably, the gas discharge circuit comprises a ventilation passage ( 70 ) which is formed on a first side of the parting surface ( 64 ) of the second mold ( 60 ), a gas guide groove ( 72 ) which is formed in a second side of the parting surface ( 64 ) and is parallel to the ventilation passage ( 70 ), and a plurality of gas discharge grooves ( 74 ) which are formed in the second side of the parting surface ( 64 ) and perpendicularly communicate with the gas guide groove ( 72 ).
|
