Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Mold having movable core or movable pin
Patent
1985-09-26
1986-12-09
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Mold having movable core or movable pin
249152, 249181, 249184, 425438, 425DIG5, 425DIG14, 425DIG58, B29C 3302
Patent
active
046278109
ABSTRACT:
An injection mold utilizes a collapsible core portion which includes a core portion and a mold cavity portion. A core base is provided as part of the core portion. A first mold ring is positioned about the core base and longitudinally movable to define a first annular parting line between the core base and first mold ring. The first mold ring carries outer core members and controls their longitudinal positioning along the core base while permitting them to move radially inwardly and outwardly between molding and collapsed positions. A second mold ring is carried on the core and includes stripper ring means, the second mold ring being longitudinally movable to define a second annular parting line with the first mold ring. The second mold ring also forms a third, annular parting line with the mold cavity portion. Means are provided for relatively moving the core base, mold cavity portion, and first and second mold rings in a longitudinal direction relative to each other and the mold cavity portion. Locking means may be provided for locking the parting lines closed in the molding position and to sequentially open them.
REFERENCES:
patent: 3642417 (1972-02-01), Von Holdt
patent: 3905740 (1975-09-01), Lovejoy
patent: 4125246 (1978-11-01), Von Holdt
patent: 4286766 (1981-09-01), Von Holdt
patent: 4362291 (1982-12-01), Fuke et al.
patent: 4383819 (1983-05-01), Letica
patent: 4533312 (1985-08-01), Von Holdt
Heitbrink Timothy W.
Pigott, Jr. Charles F.
Woo Jay H.
LandOfFree
Collapsible core does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Collapsible core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collapsible core will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1383453