Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1995-11-13
1997-11-04
Davis, Robert
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
249 68, 264335, 425437, 425438, B29C 4543, B29C 4544
Patent
active
056836449
ABSTRACT:
A method for stripping a resilient bellows part from an injection mold has a step of injection molding a resilient bellows part around a colinear core pin and a stripper rod, surrounded by a split cavity. The bellows part has two open ends, one of which is substantially rigid and is closed by the stripper rod passing through it. The second open end is resilient. Another step opens the split cavity to permit the bellows part to be stripped from the core pin. Yet another step expands the bellows part radially outward from the core pin. Simultaneously with expanding the bellows part, a step of pushing the substantially rigid open end of the bellows part by the stripper rod causes the resilient portion and resilient open end to be stripped off the core pin. Finally, the substantially rigid open end of the bellows part is ejected from the stripper rod.
REFERENCES:
patent: 2396406 (1946-03-01), Anderson
patent: 2547894 (1951-04-01), Treckman
patent: 3183551 (1965-05-01), Johnson
patent: 3660002 (1972-05-01), Morroni
patent: 3733384 (1973-05-01), Gerlovich et al.
patent: 3892512 (1975-07-01), Diehl
patent: 3950468 (1976-04-01), Rainville
patent: 4164523 (1979-08-01), Hanning
patent: 4375948 (1983-03-01), Von Holdt
patent: 4438065 (1984-03-01), Brown
patent: 4524943 (1985-06-01), Busch et al.
patent: 4531703 (1985-07-01), Underwood
patent: 4653997 (1987-03-01), Sheffield et al.
patent: 5006376 (1991-04-01), Arima et al.
patent: 5310518 (1994-05-01), Franzini et al.
patent: 5490966 (1996-02-01), Peterson et al.
Davis Robert
Kock Ronald W.
The Procter & Gamble & Company
LandOfFree
Method for stripping open ended bellows part from injection mold does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for stripping open ended bellows part from injection mold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for stripping open ended bellows part from injection mold will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1830654