US 11,788,629 B2
Method of manufacturing a valve armature of a solenoid valve, valve armature and solenoid valve
Christian Bezold, Ingelfingen (DE); Dieter Schmieg, Ingelfingen (DE); Tobias Griebel, Forchtenberg - Ernsbach (DE); and Rainer Hofmann, Forchtenberg - Ernsbach (DE)
Assigned to BÜRKERT WERKE GMBH & CO. KG, Ingelfingen (DE)
Filed by Buerkert Werke GmbH & Co. KG, Ingelfingen (DE)
Filed on Dec. 1, 2021, as Appl. No. 17/540,134.
Claims priority of application No. 10 2020 132 192.9 (DE), filed on Dec. 3, 2020.
Prior Publication US 2022/0178450 A1, Jun. 9, 2022
Int. Cl. F16K 1/36 (2006.01); F16K 1/46 (2006.01); F16J 15/3204 (2016.01); F16K 31/06 (2006.01)
CPC F16K 1/46 (2013.01) [F16J 15/3204 (2013.01); F16K 1/36 (2013.01); F16K 31/0658 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of manufacturing a valve armature of a solenoid valve, having an armature body and an elastomer seal fastened thereto, comprising steps of:
reshaping a cylinder-shaped blank to a final axial linear dimension of the armature body in a cold forming process, a blind hole being produced at one end of the cylinder-shaped blank and a valve seat-side end face being produced that surrounds the blind hole; and
vulcanizing the elastomer seal to an inner circumferential surface of the blind hole, wherein during the cold forming process, the cylinder-shaped blank is upset along a longitudinal direction of the valve armature, a length of the armature body being adjusted to the final linear dimension.