| Titre : |
More is less : Simulation as a tool for weighing process options before producing optical components |
| Type de document : |
texte imprimé |
| Auteurs : |
Cristoph Hinse, Auteur ; Nuno Ribeiro Simões, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 31-35 |
| Langues : |
Anglais (eng) |
| Catégories : |
Lentilles (optique)
Matières plastiques -- Moulage par injection
Moulage par injection-compression
Simulation par ordinateur
Structures multicouches
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Making the production of optical lenses economical while maintaining a certain level of product quality poses a huge challenge. Aside from the need to modify the geometry of the molded part, there is often a debate about the right production strategy. Injection-compression molding may offer an alternative to injection molding in terms of quality, but it is also cost-intensive. This is where simulation can serve as a decision-making aid. |
| Note de contenu : |
- Injection molding or injection-compression molding ?
- Simulation insights and differences
- Multi-layer injection molding shortens cycle time
- Simulation model and simulation sequence for a biconvex lens
- Comparison of simuulation results
- Figure : Simulated production of a two-layer, aspherical, biconvex lens. Here, mold filling is superimposed with the fringed pattern of the final lens
- Fig. 1 : Two-layer injection molding : visualization of the simulation model for the first and second component, including mold and temperature control
- Fig. 2 : The filling study shows the high level of agreement between injection molding reality and simulation
- Fig. 3 : The pronounced pressure gradient that occurs during injection molding contrasts with the homogeneous pressure distribution arising in injection-compression molding
- Fig. 4 : Flow-induced residual stress in the XX direction is more pronounced in injection molding than in injection-compression molding
- Fig. 5 : Flow-induced and thermally induced fringed patterns and the superposition of both effects for the simulated lens using injection molding as an example |
| En ligne : |
https://drive.google.com/file/d/13sZLvpuzsq8WKv-J4e5Pyxj9lO06Mk8J/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34268 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 4 (2020) . - p. 31-35
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More is less in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 4 (2020)
