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1. (WO2018041707) METHOD AND DEVICE FOR JOINING A LENS TO A HOUSING OF AN ILLUMINATION DEVICE FOR A MOTOR VEHICLE

Pub. No.:    WO/2018/041707    International Application No.:    PCT/EP2017/071309
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 25 01:59:59 CEST 2017
IPC: B29C 65/02
B29C 65/78
F21S 41/00
B29C 65/06
B29L 31/30
Applicants: HELLA GMBH & CO. KGAA
Inventors: SCHÜTTE, Andreas
Title: METHOD AND DEVICE FOR JOINING A LENS TO A HOUSING OF AN ILLUMINATION DEVICE FOR A MOTOR VEHICLE
Abstract:
The invention relates to a method for joining a lens (L) to a housing (G) of an illumination body (B) for a motor vehicle, comprising the steps of: positioning the housing (G) in a receiving element (11) of a welding device (100), said housing (G) being provided with at least one fixing means (A) on the lower side (UG) thereof, for fixing the illumination body (B) in the motor vehicle; determining the position of the at least one fixing means (A) in relation to the receiving element (11); determining a correction factor (Δx) on the basis of the determined position of the at least one fixing means (A); moving the lens (L) held in a holding device (10) of the welding device (100) towards the housing (G) along a travel path (Xres); and welding the lens (L) to the housing (G) by means of welding means, the length of the travel path (Xres) being corrected by means of the correction factor (Δx) in such a way that, when the lens (L) is welded to the housing (G), a defined nominal height (H) of the illumination body (B), measured from the reference surface (SA) of the at least one fixing means (A) to an upper side (OL) of the lens (L) facing away from the housing (G), is reached.