Side door latches in an automotive play a major role in occupants’ safety. The latches consist of both retention assembly and actuator assembly. The actuator assembly majorly consists of motor, gear & other components and these are protected through a Plastic Lower case and Housing. The Lower case (over-mold) with the Electrical Component Carrier - ECC (pre-mold) plays an important role in providing electrical power supply to the latch system. Since these parts are manufactured with terminal traces & plastics, upfront mold flow simulations help the product teams to evaluate the short fills, warpage, and other quality aspects in the critical areas of these components.In the part assembly station, the ECC (pre-mold) and the Lower case (over-mold) are connected to the Motor on one side and the Connector on the other. The proper alignment of the pre-mold pins is of great importance and the pre-mold must not be externally visible once the molding is complete. During the prototype build, the pins were offset/dislocated due to pre-mold shift. This in turn caused deformation of the Over-mold resulting in dimensional inconsistency leading to assembly & functional issues.This issue was complex since the part couldn’t be modified structurally because of the constraints in packaging as these interfaces with the backplate & the child feature would affect its integrity. Here, overcoming the ‘pre-mold’ shift was an important aspect to keep the Lower-case pins within the location limits ensuring a proper part assembly. However, it was challenging to control the ‘pre-mold’ shift defect merely based upon the molding manufacturing knowledge. Hence, we had to utilize ‘core-deflection analysis’ method in Moldex-3D, an injection molding specialized software, to verify the cause of ‘pre-mold’ shift and correct the problem. Virtual simulation technique has helped to resolve the issue and same technic was used in production tool. This paper will provide an insight to both the methodologies used and the tooling changes required to achieve the product assembly requirements.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Core Deflection for Pre-mold with Over-mold Injection Molding in Moldex-3D


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Conference on Automotive Materials and Manufacturing AMM 2023 ; 2023



    Erscheinungsdatum :

    25.05.2023




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Glass assembly, injection mold and injection molding method

    YANG CHAOQIANG / JIA BAOHENG / DUAN TONGXUN et al. | Europäisches Patentamt | 2025

    Freier Zugriff

    Injection mold system for molding junction module

    KO KWANG UN / PARK JU IL / JANG HYUNG WOO | Europäisches Patentamt | 2021

    Freier Zugriff

    "Shifting all over the mold" - prediction of core shift and insert shift in injection molding

    Wuest,A. / Glaser,S. / Diest,K.V. et al. | Kraftfahrwesen | 1998


    TIRE MOLD MOLDING ELEMENT, TIRE VULCANIZATION MOLDING MOLD, AND TIRE

    KANEKO SHUICHI | Europäisches Patentamt | 2019

    Freier Zugriff

    TIRE MOLD MOLDING ELEMENT, TIRE VULCANIZATION MOLDING MOLD, AND TIRE

    KANEKO SHUICHI | Europäisches Patentamt | 2019

    Freier Zugriff