B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/707
B29C 45/03 (2006.01)
Patent
CA 1272572
ABSTRACT OF THE DISCLOSURE The present hydraulic reciprocating mechanism for plastic injection molding machines mainly comprises a primary cylinder in which a primary shaft is moveably disposed. The primary shaft is formed at its interior with a pair of chambers which are not communicated with each other. A secondary shaft is inserted into one chamber of the primary shaft such that the chamber can serve as a secondary cylinder. A mold-adjusting shaft is inserted into the other chamber of the primary shaft such that the chamber can act as a mold- adjusting cylinder. The primary shaft associated with a primary piston having a plurality of holes formed therein can reciprocate within the primary cylinder to close/open the mold. The oil is arranged to circulate in the primary cylinder so that the efficiency thus achieved can be adjust the gap of the mold. Also, the instant invention has a larger effective hydraulic pressure area so that it may provide a larger total pressure to close the mold.
550529
Fetherstonhaugh & Co.
Lee Kun-Long
LandOfFree
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