Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common...
Patent
1981-09-24
1983-11-22
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
2643287, 2643288, 425573, 425577, B29F 112
Patent
active
044166028
ABSTRACT:
In an injection mold apparatus for manufacturing molded bodies from two types of plastic, a first and third injection units (4 and 6) are connected to a single mold cavity, and a core piece (15) which is movable back and forth occupies a region of the mold cavity when said core is in the blocking position, and said core in this position separates (by closing off) a first mold cavity region (associated with the first injection unit) and the entrance opening of material coming from the third injection unit (6) into the mold cavity from a second mold cavity region (which is connected to the first injection unit (4), whereby first the second mold cavity region is filled from the first injection unit and then, after the core (15) is drawn back, the region of the mold cavity initially occupied by said core, and the first mold cavity region, are filled from the third injection unit, and whereby the core has a recess, the improvement comprising providing the recess (37) in the blocking region of the core (15), whereby when the core is in the blocking position said recess is in fluid communication with the second mold cavity region, and the entrance opening of material coming from the first injection unit (6) lies in the mold cavity when the core (15) is in the blocking position, so that parts which are sequentially injection molded in the two mold cavity regions are quite securely held together at their junction position, to form a combined molded piece or molded shape, reference being made to the drawings.
REFERENCES:
patent: 4275030 (1981-06-01), Mares
patent: 4335068 (1982-06-01), Hemery
Pavelko Thomas P.
Wilhelm Rogg Kunststoff-Metallistierung
LandOfFree
Injection molding apparatus for manufacturing articles from diff does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Injection molding apparatus for manufacturing articles from diff, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding apparatus for manufacturing articles from diff will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1812945