Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1978-05-22
1980-02-05
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 22, 264538, 425137, B29C 1707
Patent
active
041872673
ABSTRACT:
A laser detection system for detecting parisons or portions of parisons remaining on cylindrical core pins at an ejection station. Injection molding of tubular parisons around cylindrical core pins occurs at a molding station; cooling the parisons while supported on the core pins occurs at a cooling station; and then, axially stripping the parisons from the core pins occurs at an ejection station. The parison stripping step is accomplished by a horizontally reciprocable carriage which is selectively moved into and out of vertical alignment with a set of core pins and parisons positioned at the ejection station. Sectional gripping members on the carriage are radially closable when in alignment with the parisons, to grasp the parisons for their axial removal from the core pins upon the horizontal displacement of the carriage. The stripped parisons may be held in a horizontal cantilever position between the gripping members during an operational dwell time for additional cooling subsequent to their removal from the core pins. A laser detection device determines if a plastic parison or portion of a parison remains on the core pin after the ejection cycle has occurred, and it prevents the machine from recycling and damaging the injection mold if a parison or portion of a parison remains.
REFERENCES:
patent: 3100913 (1963-08-01), Dematteo
patent: 3510664 (1970-05-01), Nichols
patent: 3812349 (1974-05-01), Gugliotta et al.
patent: 3834848 (1974-09-01), Farrell
patent: 3983388 (1976-09-01), Gugliotta
patent: 4057378 (1977-11-01), Wunderlich
Fisher Philip H.
Ninneman Lawrence D.
Click Myron E.
Heberling Richard D.
Owens--Illinois, Inc.
Silbaugh Jan H.
Wilson David H.
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