Plastic article or earthenware shaping or treating: apparatus – Means to create a vacuum or apply fluid pressure within a...
Patent
1998-07-02
2000-08-22
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Means to create a vacuum or apply fluid pressure within a...
425406, B29C 4310
Patent
active
061062693
ABSTRACT:
A vacuum injection press including frame structure defining a sealable molding chamber having a least one access opening by which molded products are removed. Access to the chamber is controlled by a door assembly that is movable between opened and closed positions. Upper and lower bolsters mount first and second mold portions. The lower bolster is mounted for substantially vertical reciprocal movement towards and away from the upper, fixed bolster and a fluid pressure actuator is used to maintain clamping contact between the first and second mold portions when the lower bolster is moved into a clamped position with respect to the upper bolster. An injection molding unit is located outside of the chamber and provides molding compound to a cavity defined by the mold portions. Molding compound is delivered from the injection unit to the cavity defined by the mold portions via an injection nozzle forming part of the upper, fixed bolster. An unloading mechanism is provided which moves the lower mold portion to an unload position, located outside the vacuum chamber at which location the molded products are moved. To facilitate movement of the lower mold portion to the unload position, a semi-coiled flexible conduit is used that resides within a milled slot formed in the lower bolster. As the lower mold portion moves to the unload position, the conduit moves out of the milled slot to accommodate the outward movement. Upon retraction, the conduit again coils into the milled slot.
REFERENCES:
patent: 3223352 (1965-12-01), Fuller et al.
patent: 3407673 (1968-10-01), Slezak
patent: 3551253 (1970-12-01), Slezak
patent: 3899143 (1975-08-01), Slezak
patent: 4061525 (1977-12-01), Slezak
patent: 4566854 (1986-01-01), Slezak
patent: 4666551 (1987-05-01), Soberay et al.
patent: 4929012 (1990-05-01), Slezak
patent: 5017121 (1991-05-01), Hehl
patent: 5024477 (1991-06-01), Slezak
patent: 5163727 (1992-11-01), Slezak et al.
patent: 5393210 (1995-02-01), Kasai et al.
patent: 5423670 (1995-06-01), Hamel
LandOfFree
Vacuum injection press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum injection press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum injection press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-573786