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Shedding light on a lighter mold / Monika Riedl in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 11 (11/2014)
[article]
Titre : Shedding light on a lighter mold : Haidlmair, together with autodesk simulation moldflow, has developed the lightest mold for the injection molding of big recycling containers Type de document : texte imprimé Auteurs : Monika Riedl, Auteur Année de publication : 2014 Article en page(s) : p. 15-17 Langues : Anglais (eng) Catégories : Economies d'énergie
Matériaux -- Allègement
Moules d'injection
Outillage
Simulation par ordinateurIndex. décimale : 668.4 Plastiques, vinyles Résumé : Austrian mold maker Haidlmair has developed a design masterpiece that slashes the weight of its large-volume molds compared with those of traditional container molds. As most of the weight is parked on the fixed mold side, the injection molding machine’s energy consumption is also reduced. The new design has been verified in injection molding simulations. Note de contenu : - Fixing problems during injection molding digitally
- Mastering weighty challenges
- New mold principle : compact yet stable
- Reality check via simulationEn ligne : https://drive.google.com/file/d/1l2kskfcGRgNbdpTl6UbkJmHgGQoU-d1I/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22622
in KUNSTSTOFFE INTERNATIONAL > Vol. 104, N° 11 (11/2014) . - p. 15-17[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16688 - Périodique Bibliothèque principale Documentaires Disponible Simulations of heat transfer in thermoplastic injection molds manufactured by additive techniques / L. Sardo in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 1 (03/2019)
[article]
Titre : Simulations of heat transfer in thermoplastic injection molds manufactured by additive techniques Type de document : texte imprimé Auteurs : L. Sardo, Auteur ; W. Daldoul, Auteur ; M. Vincent, Auteur ; Thomas Toulorge, Auteur Année de publication : 2019 Article en page(s) : p. 37-46 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Impression tridimensionnelle
Moules d'injection
Simulation par ordinateur
ThermocinétiqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : The cost and quality of complex thermoplastic parts manufactured by injection are traditionally limited by the design constraints on the mold cooling system. A possible way to overcome this problem is to produce the mold by additive manufacturing, which makes it possible to freely design the shape and position of the cooling channels. Such molds can have hollow spaces in order to reduce the manufacturing time by Selective Laser Melting and the use of costly materials. The complex geometry resulting from optimized cooling channels and hollow regions makes the prediction of the cooling system performance difficult. This work aims to devise a numerical methodology for the simulation of heat transfer phenomena between the polymer, the mold and the cooling channels. An Immersed Volume approach is chosen, where the different parts of the domain (i.e. the polymer, the cooling channels, the hollow regions and the mold) are represented implicitly and the thermo-mechanical properties of the materials vary smoothly at the interface between the parts. The energy and momentum equations are solved by a stabilized Finite Element method. In order to accurately resolve the large variations of material properties and the steep temperature gradients at interfaces, state-of-the art anisotropic mesh refinement techniques are employed. In a first step, we perform thermal calculations only. We then consider the proper thermo-mechanical coupling in the packing stage, as well as the ejection stage and the thermal contact resistance between the polymer part and the mold, in order to weight their influence on the part and the mold temperatures. The modeling strategy is first validated on a simple geometry of a center-gated disk and compared with experimental measurements. The agreement between the experimental results and the simulation is good. Simulations are then performed on an industrial case which illustrates the ability of the method to deal with complex geometries. Note de contenu : - MODEL : Geometry - Heat transfer and thermo-mechanical phenomena during the process
- GOVERNING EQUATIONS
- NUMERICAL METHOD : Immersed volume approach - Numerical scheme and meshing
- EXPERIMENTAL VALIDATION ON A SIMPLE GEOMETRY
- NUMERICAL STUDY OF AN INDUSTRIAL MOLD : Case and process parameters - Thermal impact of the ejection phase - Thermal impact of the packing phase - Impact of the thermal contact resistanceDOI : 10.3139/217.3594 En ligne : https://www.degruyter.com/document/doi/10.3139/217.3594/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31910
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 1 (03/2019) . - p. 37-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20669 - Périodique Bibliothèque principale Documentaires Disponible Start of a new era / Armin Daniel in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 10 (10/2013)
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Titre : Start of a new era Type de document : texte imprimé Auteurs : Armin Daniel, Auteur Année de publication : 2013 Article en page(s) : p. 153-155 Langues : Anglais (eng) Catégories : Aspect peau de requin
Composites à fibres
Matériaux -- Allègement
Matières plastiques -- Moulage par injection
Moules d'injection
Résistance à l'écoulement
Surfaces (technologie)
ViscositéIndex. décimale : 668.4 Plastiques, vinyles Résumé : Fiber composite components. Previously unknown possibilities in terms of quality, economy, ergonomy, and robust processes have been opened up by new approaches and solutions for the manufacture of fiber composite components on a series scale. Moreover, such components can also be designed with filigree or even bionic surface structures in future – also with in-mold painting. Note de contenu : - Flow resistance determines process and quality
- Pioneering development - constant and low viscosity
- Mold carrier instead of a press
- Shark skin bionuc surfacesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20299
in KUNSTSTOFFE INTERNATIONAL > Vol. 103, N° 10 (10/2013) . - p. 153-155[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15617 - Périodique Bibliothèque principale Documentaires Disponible Structural analysis examining the mold deformation behavior for the detection of the flash in the injection mold / J. H. Choi in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 4 (08/2014)
[article]
Titre : Structural analysis examining the mold deformation behavior for the detection of the flash in the injection mold Type de document : texte imprimé Auteurs : J. H. Choi, Auteur ; B. G. Pyo, Auteur ; J. S. Tae, Auteur ; H. P. Park, Auteur ; B. O. Rhee, Auteur Année de publication : 2014 Article en page(s) : p. 489-494 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse structurale (ingénierie)
Bavures (usinage et moulage)
Matières plastiques -- Moulage par injection
Moulage par injection -- Défauts
Moules d'injectionIndex. décimale : 668.4 Plastiques, vinyles Résumé : Flash known as burr is defined as additional resin filling a gap between parted surfaces. It is caused by mold deformation from excessive cavity pressure. In our previous research, there had been attempts to detect the occurrence of the flash using the contact-pressure-sensor which was developed. Although the sensor showed a reliable response of mold deformation, the sensor alone could not tell us the exact occurrence of flash. In order to understand response of the sensor, a structural analysis in conjunction with a molding analysis was carried out. In the analysis, the platens of an injection molding machine were included in the model to accurately implement deformation of the mold. We found that the trend of strain predicted by the CAE analysis was similar to the measured one although the strain value was not comparable. We examined the stress at the parting edge and found that the most probable moment for the flash occurrence appeared when the z-axis stress was closed to zero value. Note de contenu : - FLASH OCCURENCE : Cause of flash - Measurement of flash occurence
- THE CONTACT-PRESSURE-SENSOR : Sensor installation - Strains at parting surface
- STRUCTURAL ANALYSIS OF BUMPER : Molding analysis - Structural analysis
- RESULTS AND DISCUSSIONS : Measured strain by the sensor - CAE resultsDOI : 10.3139/217.2891 En ligne : https://drive.google.com/file/d/1oe2eqOnOblThkrbWXjMyd0OyQTH9pdhS/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21828
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 4 (08/2014) . - p. 489-494[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16454 - Périodique Bibliothèque principale Documentaires Disponible Des superfinitions sans toilage manuel / Delphine Vaudoux in TRAVAIL & SECURITE, N° 802 (02/2019)
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Titre : Des superfinitions sans toilage manuel Type de document : texte imprimé Auteurs : Delphine Vaudoux, Auteur Année de publication : 2019 Article en page(s) : p. 22-23 Langues : Français (fre) Catégories : Entretien et réparations
Moules d'injection
Sécurité du travail
Toilage
Travailleurs -- ProtectionIndex. décimale : 668.4 Plastiques, vinyles Résumé : Chez Jokey, une entreprise qui fabrique des sceaux et des pots en plastique, l'atelier maintenance des moules occupe une place stratégique. c'est là que sont réparés, nettoyés... et polis les moules. des opérations minutieuses qui faisaient appel au toilage manuel. Mais celles-ci ont bien évolué. Note de contenu : - Des moules à l'aspect parfait
- Une réalisation maisonPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31729
in TRAVAIL & SECURITE > N° 802 (02/2019) . - p. 22-23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20609 - Périodique Bibliothèque principale Documentaires Disponible The effects of various variotherm processes and their mechanisms on injection molding / C.-T. Huang in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 3 (07/2011)
PermalinkThe four sides of a cube / Thorsten Thümen in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 9 (09/2012)
PermalinkThe key to efficient production of a hybrid part / Jörg Essinger in KUNSTSTOFFE INTERNATIONAL, Vol. 105, N° 1-2 (01-02/2015)
PermalinkThe soft component first / Horst-Werner Bremmer in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 3 (03/2019)
PermalinkThermal mold design in consideration of the temperature control fluid flow / Christian Hopmann in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 4 (08/2013)
PermalinkThree-dimensional melt flow system in the hot runner manifold block / Simon Wurzbacher in KUNSTSTOFFE INTERNATIONAL, Vol. 113, N° 4 (2023)
PermalinkThree rotations to the cupholder / Stefan Nix in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 11 (11/2013)
PermalinkToday’s vision of the future / Vaculik, Robert in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)
PermalinkPermalinkTwice as fast with nitrogen cooling / Sultan Süzer Ilbay in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 8 (08/2013)
PermalinkPermalinkUsing breathing signals for process optimization / Georg Pillwein in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 1 (01/2020)
PermalinkUsing a visualization mold to discuss the influence of gas counter pressure and molt temperature on the fountain flow effect / Wen-Ren Jong in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 2 (05/2018)
PermalinkUV-curable technique of magnetic roller soft mold and microstructure pattern replication / Y. J. Weng in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 1 (03/2015)
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