Method for encapsulating with plastic
AssigneeMarquardt GmbH
InventorChristoph Stier
Life of this patent
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Abstract
The invention relates to a method for encapsulating an element with a body of plastic. The element is placed into a cavity in an injection mold and fixed therein by means of a movable retaining pin. Then the plastic is injected into the cavity. Subsequently, the retaining pin is moved away from the element after filling of the cavity and while the plastic is still in a plastic state so that plastic can subsequently flow into the volume vacated by the retaining pin, to produce a kind of weld line in the region of the fixing on the body. Then, the retaining pin is moved back in the direction of the element while the plastic that subsequently flowed into the volume is still in a plastic state so that a kind of compression of the plastic takes place in the region of the fixing on the body.
Claims16
A method for encapsulating an element in a body of plastic, comprising:
- placing the element into an injection mold that has a cavity, the element being fixed in the cavity by means of a movable retaining pin;
- injecting a plastic into the cavity;
- moving the retaining pin away from the element after filling the cavity with the plastic while the plastic is still in a plastic state in such a way that the plastic thereby flows into a volume vacated by the retaining pin, and
- moving back the retaining pin in a direction of the element while the plastic that has flowed into the volume is still in a plastic state in such a way that a compression of the plastic takes place in a fixing region on the body.
Dependencies are inferred from the claim text.