Keeping a sense of perspective / Jochen Mitzler in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 3 (03/2018)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 3 (03/2018) . - p. 43-46 Titre : Keeping a sense of perspective : Optical components place high requirements on the entire process chain Type de document : texte imprimé Auteurs : Jochen Mitzler , Auteur ; Martin Würtele, Auteur ; Jens Fiedler, Auteur Année de publication : 2018 Article en page(s) : p. 43-46 Langues : Anglais (eng) Catégories : Automobiles -- Eclairage Matériel optique Matières plastiques -- Moulage par injection Matières plastiques dans les automobiles Moulage par injection-compression Index. décimale : 668.4 Plastiques, vinyles Résumé : It is familiar to every eyeglass wearer: Just a tiny spec on the glass ruins your vision. And there may even be a safety risk if car headlamps scatter the light in the wrong direction. The manufacture of optical parts by injection molding is therefore a serious and demanding task affecting the entire process chain. Note de contenu : - Challenges: narrow tolerances and absolute transparency - Strictly regulated : plastication and process - Process in the mold : injection-compression molding is preferred - Critical for rejects: material supply and cleanroom climate - Central production issue : the economics of thick lenses - Functional structures : moth's eyes and fresnel lens - Fig. 1. Light strips, e.g. for LED headlamps are manufactured by the multilayer process - Fig. 2. The precise scattering effect of headlamps and rear lamps requires an exactly matched process chain - Fig. 3. For optical applications, molds with a compression function are recommended This allows longer flow paths to be realized and cavities, sink marks or birefringence effects due to internal stresses to be avoided - Fig.4. Production under cleanroom conditions : The CH twin-platen machine is optionally equipped with a special flow box via the clamping unit. The moid region therefore remains almost dust-free En ligne : https://drive.google.com/file/d/1qvChY5N63sG2yhWg3o_yk1kEy2sK4fLp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30263 [article]

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Three at one blow / Jochen Mitzler in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 10 (10/2018)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 10 (10/2018) . - p. 52-55 Titre : Three at one blow : KraussMaffei and Leonhard Kurz optimize the combined IMD and IML film processes Type de document : texte imprimé Auteurs : Jochen Mitzler , Auteur ; Jens Fiedler, Auteur ; Philipp Lachner, Auteur ; Martin Hahn, Auteur Année de publication : 2018 Article en page(s) : p. 52-55 Langues : Anglais (eng) Catégories : Automatisation Décoration dans le moule Etiquetage dans le moule Matières plastiques -- Moulage par injection Index. décimale : 668.4 Plastiques, vinyles Résumé : In one of the cavities, a control display is created in so-called dead-front design with a touch sensor. In the adjacent cavity, a component is made with faux-concrete surface aesthetics that can be lit from behind. At the Fakuma trade show, KraussMaffei and Leonhard Kurz demonstrate the degree of functional integration made possible by combining the IMD and IML film processes. The new IMD SI Duo film feed is the first-ever solution capable of positioning two decorative strips independently of each other. The first series application is already up and running. Note de contenu : - Initial independent positioning of two IMD strips yields clear benefits - Fully automated process - from film insertion to component timming - Space-saving design paired with high flexibility - Initial use in series production - Figure : The free space below the clamping unit creates the conditions for film routing, even for automation tasks with two film strips - Fig. 1 : Compact and flexible at the same time : the all-electric PX 320 with integrated automation cell combines the IMD and IML processes - Fig. 2 : Function and decor rolled into one: at Fakuma, a complete ten-inch HMI display in dead front design, with integrated electronics and top coat for scratch resistance, takes shape on the PX 320 in one production step - Fig. 3 : In the second cavity of the same mold, a display trim that can be lit from behind is shaped with faux-concrete surface aesthetics - Fig. 4 : Consistent lightweight design: the insertion and removal gripper developed by KraussMaffei is made of carbon and allows for the use of smaller base units - Fig. 5 : Compact automation: a six-axis robot inserts the components into the laser trim-ming station. Visible in the background: the conveyor with UV tunnel and, behind it, the clamping unit with the film feed - Fig. 6 : The two-platen machines of the CX series make very efficient use of the installation area for the IMD process and ensure outstanding accessibility of all components thanks to their ejector space door En ligne : https://www.kunststoffe.de/en/journal/archive/article/kraussmaffei-and-leonhard- [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31447 [article]

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