Method for assembling a valve assembly of an injection valve and valve assembly of an injection valve

摘要

Method for assembling a valve assembly (60) of an injection valve (20). The valve assembly (60) comprises a valve body (4) having a central longitudinal axis (L), and a cavity (8) with a fluid inlet portion (42) and a fluid outlet portion (44), a valve needle (14) axially movable in the cavity (8). The valve needle (14) prevents a fluid flow through the fluid outlet portion (44) in a closing position and releases the fluid flow through the fluid outlet portion (44) in further positions The method comprising the following steps: providing the valve body (4) and forming a recess (46) in the valve body (4) in a manner that the recess (46) faces the central longitudinal axis (L), providing a needle guide element (28) being designed to guide the valve needle (14) in the cavity (8), arranging and aligning the needle guide element (28) relative to the valve body (4) in such a manner that the needle guide element (28) is arranged in the cavity (8) and one part (30) of the needle guide element (28) is arranged on a shoulder (33) of the valve body (4) facing away from the fluid outlet portion (44), deforming the part (30) of the needle guide element (28) in radial direction in such a manner that the part (30) is getting into engagement with the recess (46) in the valve body (4) thereby fixedly coupling the needle guide element (28) relative to the valve body (4).