Mechanical safety cover interlock for injection molding machine

Details Mechanical safety cover interlock for injection molding machine Mechanical safety cover interlock for injection molding machine

1981-11-13

1983-02-15

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

With safety feature

Secondary means to prevent accidental motion, or means to...

425DIG45, B29F 100

Patent

active

043738907

ABSTRACT:
A mechanical interlock mechanism for the safety cover of the die closing unit of an injection molding machine which has an arresting rod attached to the movable die carrier frame and extending rearwardly through a stationary cylinder head plate, where an arresting unit encloses a pair of arresting jaws with attached cam followers. The latter are engaged by a control rod which is connected to the safety cover by means of a control linkage. The jaws are forcibly closed, in opposition to jaw opening springs, and butting of the arresting jaw ridges against the arresting rod collars is limited to one jaw only, as a result of an axial offset between the arresting jaw ridges, in connection with a certain minimal pitch of the arresting rod collars and a floating arrangement of the jaw closing assembly. The latter is spring-biased towards one side.

REFERENCES:
patent: 3386133 (1968-06-01), Weiner
patent: 3771936 (1973-11-01), Moslo

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