| Titre : |
Quality assurance for multiple cavities : Automating injection molding with process contrôl - with the example of a cube mold |
| Type de document : |
texte imprimé |
| Auteurs : |
Martin Ortgies, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 13-15 |
| Langues : |
Anglais (eng) |
| Catégories : |
Assurance qualité
Automatisation
Canaux chauffants
Capteurs (technologie)
Matières plastiques -- Moulage par injection
Pression -- Contrôle
Procédés de fabrication
Rhéologie
Surveillance électronique
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The Reversecube two-part cube mold is used to produce 60 million multicomponent parts per year on one production line and in the same process. The cycle times must be kept very short while at the same time maintaining stable processes and a high part quality. Sensor-based monitoring and automatic process control is therefore deployed in the form of Fillcontrol from Priamus. It consists of hot-runner balancing, viscosity and compression control as well as automatic holding pressure changeover. |
| Note de contenu : |
- Hot-runner balancing evens out differences in filling time
- Control loop reduces viscosity fluctuations
- Compression regulation monitors the melt compression
- Sensor technology reduces process cost and increases parts quality
- Figure : The two halves of the reversecube cube mold, in stacked arrangement, rotate in 90° steps. Injection and cooling component 1, analogous to the component 2 above, which is offset by 180°
- Fig. 2 : Different volumetric degrees of filling in the cavities can be identified with cavity temperature sensors. This balancing is evened out until all the cavities are filled simultaneously
- Fig. 3 : Changeover via fixed values, such as screw path or cavity pressure threshold causes different degrees of filling in the event of viscosity fluctuations. The automatic changeover via the flow-front position balances out viscosity fluctuations. SL – switch level (limit value for manual configuration); SLP – switch level point (limit value accurately detected by the program/chip) |
| En ligne : |
https://drive.google.com/file/d/1D6dHTnZlAcrVsPJ2BrTCvSHmTYsvOUaT/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36160 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 111, N° 5 (2021) . - p. 13-15
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Quality assurance for multiple cavities in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 5 (2021)
