Safety mechanism for injection-molding machine provided with take-off member
AssigneeHusky Injection Molding Systems Ltd.
InventorsHerbert Rees, Paul Brown, Miroslav Grund
Life of this patent
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Abstract
A take-off plate, mounted near one of two relatively movable mold portions and insertable therebetween to remove freshly molded workpieces, enters a slot of a guide block rigid with the same mold portion upon moving from a retracted to an inserted position, the guide block also having a bore intersecting the slot and extending in the direction of mold motion. A pin on the other mold portion traverses the bore upon closure of the mold to prevent untimely insertion of the take-off plate; conversely, the take-off plate in its inserted position obstructs the bore to prevent premature mold closure.
Claims5
In a workpiece-shaping machine provided with a pair of relatively movable holders carrying respective mold portions displaceable between a mold-open position and a mold-closed position, the combination therewith of:
- a take-off member adjacent one of said holders provided with drive means for moving same from a retracted position into an inserted position between said mold portions in the mold-open position of said holders for extracting freshly molded workpieces from one of said mold portions;
- and
- lockout means for preventing any significant movement of said take-off member from said retracted position toward said inserted position with said holders displaced from said mold-open position and preventing any significant displacement of said holders from said mold-open position with said take-off member moved out of said retracted position, said lockout means including a control element on the other of said holders with a trajectory intersecting the path of a coacting element on said take-off member.
Dependencies are inferred from the claim text.