System and method for identifying and rejecting defective blow-molded plastic products
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United States of America Patent
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app pub date -
May 10, 2002
filing date -
Feb 7, 2000
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Abstract
A system and method for detecting and rejecting defective blow molded containers is provided. The invention includes a sound detector system for sensing the sound level from a mold during the blowing process, and outputting a sound level signal. If the sound level signal exceeds a predetermined set point, thereby indicating a discontinuous container, a kick mechanism rejects the defective container. The kick mechanism is sequenced with the sound detector system. A proximity switch may be employed to indicate the mold being in position in front of the sound detector.
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