| Titre : |
No more weight problems : Dynamic adjustment of switchover pressure and holding pressure to achieve a constantpart weight |
| Type de document : |
texte imprimé |
| Auteurs : |
Benjamin Pearson, Auteur ; Patrick Pazour, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 25-27 |
| Langues : |
Anglais (eng) |
| Catégories : |
Logiciels
Matières plastiques -- Moulage par injection
Poids -- Contrôle
Pression -- Contrôle
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
HiQ Flow is Wittmann Battenfeld’s answer to the challenge of fluctuating shot weights in injection-molded parts. The assistant system modifies the process parameters in the course of the same shot to counteract vis-cosity fluctuations caused by batch fluctuations in the material or by the use of regrind. |
| Note de contenu : |
- How does the assistance system function ?
- Benchmark test with automotive components
- Cavity pressure as a decisive reference value for quality
- A question of distribution
- Figure : The HiQ Flow software corrects viscosity deviations during the injection and holding pressure phases within the same shot, based on the measurement values taken from the injection molding machine
- Fig. 1 : Injection profile over time for two materials of different viscosities (blue for low and red for high viscosity), with active support from HiQ Flow. The highlighted area represents the period of time for which the injection work is calculated. HiQ Flow shifts the changeover point and the holding pressure level within the same shot on the basis of reference values
- Fig. 2 : Peak cavity pressure per shot for three different materials. In the first section, HiQ Flow is deactivated, in the second section, it is switched on. This shows that with HiQ Flow being acti-vated, a stationary cavity pressure and consequently repeatable cavity filling has been achieved
- Fig. 3 : Combined box plot to compare the peak cavity pressures per material and test series
- Fig. 4 : Combined box plot for comparison of the maximum peak cavity pressures with deactivated and activated HiQ Flow |
| En ligne : |
https://drive.google.com/file/d/1vqso-M0QdRC2qEk5BqSnif4OYykdyq9a/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34813 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 7 (2020) . - p. 25-27
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No more weight problems in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 7 (2020)
