Die and molding method

When retracting a core mold (64a) after the core mold (64a) was pushed out, a pin-shaped member (83) functioning as a return prevention member provided on a first die (41) enables a lens (LP) to be demolded from the core mold (64a) by means of restricting the lens (LP) from retracting. Therefore, it...

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Bibliographic Details
Main Author NODA TAKAYUKI
Format Patent
LanguageChinese
English
Published 20.06.2012
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:When retracting a core mold (64a) after the core mold (64a) was pushed out, a pin-shaped member (83) functioning as a return prevention member provided on a first die (41) enables a lens (LP) to be demolded from the core mold (64a) by means of restricting the lens (LP) from retracting. Therefore, it is possible to demold the lens (LP) from a deep first transfer surface (S1) provided on the core mold (64a) by means of the retracting motion of the core mold (64a) in the AX direction of the axis of the core mold (64a). Through this, it is possible to avoid extra force to be applied locally to the lens (LP) compared with when the lens (LP) is being peeled, allowing the demolding process to be carried out in a gentle manner.
Bibliography:Application Number: CN2010842181