Core pin mounting means for injection molding apparatus

Abstract

Abstract D R A W I N G MOLD CORE PINS ARE MOUNTED ON A TURNTABLE SO THAT THEY CAN BE INDEXED TO FOUR STATIONS IN SEQUENCE. EACH CORE PIN IS FORMED WITH A PERPHERAL ANNULAR FLANGE THAT EXTENDS RADIALLY OUTWARDLY FROM THE CORE PIN AND THAT HAS A RADIAL TAPER. PARTIBLE INJECTION AND BLOW MOLDS EACH HAVING AT LEAST TWO SECTIONS ARE ENGAGEABLE WITH THE CORE PINS AT SELECTED STATIONS. THE MOLDS COOPERATE WITH THE CORE PINS TO FORM MOLD CAVITIES. EACH SECTION OF EACH MOLD IS FORMED WITH RECESS, AND EACH OF THE RECESS IS TAPERED COMPLEMENTALLY TO THE CORE PIN FLANGES. WHEN THE MOLD SECTIONS ARE CLOSED ABOUT THE CORE PINS, THE FLANGES ENTER THE RECESSES. THE CONNECTION BETWEEN EACH CORE PIN AND THE TURNTABLE IS RESILIENT SO THAT THE CORE PINS WHEN ENGAGED ARE POSITIONED BY THE INTERACTION OF THE FLANGES AND RECESSES. AT ALL OTHER TIMES, THE CORE PINS ARE POSITIONED BY THEIR RESILIENT CONNECTIONS TO THE TURNTABLE.

Inventors

• 👤 Oscar Reiss

Bibliographic Details