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    • 6. 发明公开
    • METHOD OF LASER WELDING OF AN AUTOMOTIVE LIGHT
    • VERFAHREN ZUM LASERSCHWISSEN EINER FAHRZEUGLEUCHTE
    • EP2949452A1
    • 2015-12-02
    • EP15165724.4
    • 2015-04-29
    • Automotive Lighting Italia S.p.A. A Socio Unico
    • Schiccheri, NicolaBoero, CristianoFerigo, DomenicoLeone, Fabio
    • B29C65/16F21S8/10
    • B29C65/1638B29C65/1635B29C65/1661B29C65/1664B29C65/1667B29C65/167B29C65/1687B29C65/1696B29C66/114B29C66/131B29C66/24244B29C66/542B29C66/9592B29L2031/747F21S41/28F21S41/29F21S43/27
    • Method of manufacture of an automotive light (4) comprising the steps of providing a container body (8) delimited by a first perimetral profile (20), providing a lenticular body (24), internally delimited by a second perimetral profile (28) and externally by an outer edge (32) corresponding to said second perimetral profile (28), associating at least partially with each other the respective first and second perimetral profiles (20,28) of the container body (8) and the lenticular body (24), the contact surface between said perimetral profiles (20,28) defining a welding interface (48) which extends along a curve defined by a curvilinear abscissa (S), providing at least one laser emitting device which emits a light beam or radiation having a characteristic emission spectrum, providing a plurality of fibres (44) which receive portions of the laser beam from the laser emitter device and direct them towards the welding interface (36) through the lenticular body (24), - wherein the container body (8) acts as an absorbent element of the light beam and the lenticular body (24) acts as a transmission element of the light beam, providing optical devices (52) for changing the divergence of the portions of laser beams in output from the fibres (44), so as to collimate them overall along at least one predetermined optical axis (X-X). The method further comprises the steps of directing on a critical portion of the welding interface (36) at least a first laser beam (60) emitted by a respective fibre (44) lying on an optical plane (P) incident with said critical portion (64) of the welding interface (36), wherein the optical plane (P) identifies an angle of orientation (α) between 0 and 45 degrees with a plane (T) tangent to the critical portion (64) of the welding interface (36).
    • 一种制造汽车灯(4)的方法,包括以下步骤:提供由第一周边轮廓(20)限定的容器主体(8),提供由第二周边轮廓(28)内部界定的透镜体(24);以及 在外部由对应于所述第二周边轮廓(28)的外边缘(32)外部至少部分地将容器主体(8)和透镜体(24)的相应的第一和第二周边轮廓(20,28)相互关联 ),所述周边轮廓(20,28)之间的接触表面限定沿着由曲线横坐标(S)限定的曲线延伸的焊接界面(48),提供至少一个激光发射装置,其发射具有 特征发射光谱,提供多个光纤(44),其接收来自激光发射器装置的激光束的部分,并通过透镜体(24)将它们引向焊接界面(36),其中容器 主体(8)用作光束的吸收元件,并且透镜体(24)用作光束的透射元件,提供光学装置(52),用于改变激光束的部分的发散, 纤维(44),以沿着至少一个预定的光轴(XX)整体校准它们。 该方法还包括以下步骤:引导焊接界面(36)的至少一个第一激光束(60)的关键部分,该第一激光束(60)由位于与所述临界部分(P)入射的光学平面(P)上的相应光纤(44) (36),其中所述光学平面(P)识别在0和45度之间的取向角(±)与与所述焊接界面(36)的临界部分(64)相切的平面(T) )。