Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Plural wear or shaping surfaces mounted for alternative use
Patent
1983-06-20
1984-07-31
Hoag, Willard E.
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
Plural wear or shaping surfaces mounted for alternative use
100918, 425186, 425190, 425575, B29C 100, B29F 100
Patent
active
044627831
ABSTRACT:
A mechanism for the program-controllable exchange of injection molding dies in the die closing unit of an injection molding machine, comprising a translation table with two die emplacements which are alternatingly movable into transverse alignment with the die clamping space, for horizontal transfer of a die assembly. The transfer movement is produced by a compact roller chain drive with drive pins engaging recesses in a drive rack. The die assemblies have standardized back plates for positioning and guidance of the die assembly by means of aligned guide faces on the translation table and on a guide shelf of the die closing unit. Each die emplacement has a separate drive rack which entrains a die assembly. The drive racks are restrained against movement, when outside the transfer position.
REFERENCES:
patent: 3782874 (1974-01-01), Hehl
patent: 3898030 (1975-08-01), Bishop
patent: 3982869 (1976-09-01), Eggers
patent: 4025268 (1977-05-01), Taylor
patent: 4379685 (1983-04-01), Tada et al.
Geiger Joseph A.
Hoag Willard E.
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