Segmented core and method for molding an impeller
AssigneeGrundfos Holding A/S
InventorMartin VESTERMARK VAD
Life of this patent
Estimating the term…
Abstract
A segmented core (1) for molding of an impeller (12), especially a pump impeller, includes at least three segments (2). All of the segments (2) have the same form and each segment (2) has connecting devices (3, 3′) for connecting the segment (2) with the adjacent segments (2). A method for molding an impeller (12) includes the steps of: providing a molding tool (14), providing a core (1) including at least three identical segments (2), which include the connection portions (3, 3′) for connecting the segment (2) with the adjacent segments (2); assembling of the core (1); placing the core (1) in the molding tool (14); molding the impeller (12), ejecting the core (1) and the impeller (12) out of the molding tool (14); and removing the core (1) from the impeller (12).
Claims20
A segmented core for molding of an impeller in a mold, the segmented core comprising:
- at least three segments, each of the segments having a same form and each of the segments having connecting means for connecting the segment with the adjacent segments.
A method for molding an impeller the method comprising the steps of:
- providing a molding tool;
- providing a core comprising at least three identical segments, which each comprise connection means for connecting the segment with the adjacent segments;
- assembling of the core and placing the core in the molding tool;
- molding the impeller;
- ejecting core and impeller out of the molding tool;
- removing the core from the impeller.
An impeller mold core comprising at least three segments each of the segments comprising a shaped form, wherein the shaped form of each segment is identical to the shaped form of the other segments and each shaped form defines connection features that are a portion of the shaped form, the connection features for connecting each segment with the adjacent segments.
Dependencies are inferred from the claim text.