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US 2011/0033571 A1Published application
Mold degater
OwnerDan Chittleinventor
Life of this patent
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Abstract
A mold assembly and method of operation utilizes a degater for separating plastic in runners and gates from a desired completed part prior to curing of the plastic material to provide desirable cut on completed part. Cutting edges of the degater are disposed proximate to the gates to trim excess plastic from a completed part prior to curing or hardening of the plastic part.
Claims7
A device for removing plastic runner and gate material from a plastic part comprising:
- a mold including at least a first part and a second part defining a mold cavity and a plurality of runners and gates that provide a passage for injecting plastic material into the mold cavity;
- a degater disposed in one of the first and second parts that includes a cutting edge corresponding with the gates;
- a biasing member that biases the degater toward a cutting position where the cutting edge is moved through the gates to separate plastic material within the mold cavity from plastic material within the runners;
- an actuator that holds the degater in a first position against the force of the biasing member, the actuator movable to a release the degater from the first position to the cutting position;
- and
- a controller that controls actuation of the actuator to release the degater once plastic is injected and packed a desired amount within the mold cavity.
3 more elements
Dependencies are inferred from the claim text.