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Custom-made networking increases efficiency / Reinhard Schiffers in KUNSTSTOFFE INTERNATIONAL, Vol. 106, N° 10 (10/2016)
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Titre : Custom-made networking increases efficiency : Plastics processors of any size benefit from industry 4.0 Type de document : texte imprimé Auteurs : Reinhard Schiffers, Auteur ; Stefan Kruppa, Auteur ; Benjamin Müller, Auteur Année de publication : 2016 Article en page(s) : p. 112-115 Langues : Anglais (eng) Catégories : Données -- Transmission
Efficience dans l'industrie
Industrie 4.0Le concept d’Industrie 4.0 correspond à une nouvelle façon d’organiser les moyens de production : l’objectif est la mise en place d’usines dites "intelligentes" ("smart factories") capables d’une plus grande adaptabilité dans la production et d’une allocation plus efficace des ressources, ouvrant ainsi la voie à une nouvelle révolution industrielle. Ses bases technologiques sont l'Internet des objets et les systèmes cyber-physiques.
Matières plastiques -- Moulage par injection
Matières plastiques -- Moulage par injection -- Appareils et matériel
Procédés de fabrication
Réseaux d'informationIndex. décimale : 668.4 Plastiques, vinyles Résumé : Industry 4.0 or internet of things – behind these oft-quoted terms is a (r)evolution: Making production more efficient by networking machines and processes, which also involves great opportunities for plastics processors. The most important measure is collecting data, making it available for communication and providing a useful evaluation of it. Note de contenu : - Process control taking into account material properties
- Systematic acquisitioni of up to 500 items of process data
- Optimizing processes with intelligent key performance indicators
- Service over the internetEn ligne : https://drive.google.com/file/d/1gq3pACmCbo45km1n4IsUZ8R5RF8v_Gzr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28074
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Code-barres Cote Support Localisation Section Disponibilité 18402 - Périodique Bibliothèque principale Documentaires Disponible Improved process and component quality when using recycled materials / Stefan Kruppa in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 11 (11/2017)
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Titre : Improved process and component quality when using recycled materials : Part 4 of the series "more stability for injection molding with APC plus" Type de document : texte imprimé Auteurs : Stefan Kruppa, Auteur Année de publication : 2017 Article en page(s) : p. 26-27 Langues : Anglais (eng) Catégories : Industrie 4.0 Le concept d’Industrie 4.0 correspond à une nouvelle façon d’organiser les moyens de production : l’objectif est la mise en place d’usines dites "intelligentes" ("smart factories") capables d’une plus grande adaptabilité dans la production et d’une allocation plus efficace des ressources, ouvrant ainsi la voie à une nouvelle révolution industrielle. Ses bases technologiques sont l'Internet des objets et les systèmes cyber-physiques.
Matières plastiques -- Moulage par injection
Matières plastiques -- Recyclage
Polyamide 66
Rhéologie
ViscositéIndex. décimale : 668.4 Plastiques, vinyles Résumé : In the injection molding process, the addition of recycled material affects the processing viscosity of the melt and thus also the closing behavior of the nonreturn valve. The APC plus function of KraussMaffei compensates for these changes and prevents fluctuations in the component weight. The result is consistently high component quality while ensuring lower resource consumption. Note de contenu : - Adjustment within one cycle
- What happens when the regrind portion increases ?
- FIGURES : 1. The clear visualization of the configuration level on the MC6 control system makes it possible to specify the basic data quickly and easily - 2. The adaptations made by the APC plus machine function for the changeover point and the holding pressure can be viewed in the MC6 control system. The viscosity index is displayed as a key figure for the melt viscosity - 3. Increasing recycled content lowers the viscosity of the melt (PA66-GF30). Without active APC plus, using a variety of materials will result in various part mass and component quality. When APC plus is used in production, however, the fluctuations in part mass can be reduced considerably between the individual cyclesEn ligne : https://drive.google.com/file/d/1S-QlJJp8qCDfPQZrpSgwawmplDWtMgKR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29536
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Code-barres Cote Support Localisation Section Disponibilité 19404 - Périodique Bibliothèque principale Documentaires Disponible Injection molding is getting more continuous / Stefan Kruppa in KUNSTSTOFFE INTERNATIONAL, Vol. 106, N° 9 (09/2016)
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Titre : Injection molding is getting more continuous : "Back flow compensation" combines passively blocking screw head geometry with machine operation at speed Type de document : texte imprimé Auteurs : Stefan Kruppa, Auteur ; Johannes Wortberg, Auteur ; Reinhard Schiffers, Auteur Année de publication : 2016 Article en page(s) : p. 81-84 Langues : Anglais (eng) Catégories : Matières plastiques -- Moulage par injection -- Appareils et matériel Index. décimale : 668.4 Plastiques, vinyles Résumé : Within the scope of a joint research project, machine maker KraussMaffei and the Duisburg-Essen University developed an injection molding concept without movable backflow valve. Hereby, the decisive elements are a newly designed screw head and continued rotation during the injection phase. Note de contenu : - The backflow valve : diva-like behavior
- The alternative : innovative screw heads plus rotation
- Geometric layout and modeling
- Process-related investigation of weight constancy
- Energetic considerations
- FIGURES : 1. Signal curves for consecutive injection cycles in a process with a 3-flight BFV. Partial filling with PA6 (type: Durethan B 30 5 ; manufacturer: Lanxess Deutschland GmbH) is achieved without holding pressure. The curves show an unstable process due to the non-reproducible closing behavior of the ring backflow valve - 2. CAD model of backflow compensation - 3. Seconds 3 to 9 show the holding pressure phase, in which pressure and the residual melt cushion can be maintained also with BFC (top). During the holding pressure phase, screw speed can be lower than during plastification - here, it is 75 rpm (center). Bottom: With the 3-F-BFV, torque during injection is generated by the mass flow - 4. Constant shot weight for partial (top) and complete filling (bottom) with holding pressure for 3-F-BFV, ASOV-BFV, and BFC-BFV. The backflow-compen¬sated version (BFC) gives the best results - 5. Mean electric power consumption for drives Pdrv, and heaters Pheat in kW for various resulting screw speeds Nscr . Due to additional dissipation in the injection phase, less heating energy is required, so that the duty cycle of the barrel heaters is reducedEn ligne : https://drive.google.com/file/d/1etbkRvRKe1NFvN6hcgW-s-nXs9pv03M9/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27778
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Code-barres Cote Support Localisation Section Disponibilité 18341 - Périodique Bibliothèque principale Documentaires Disponible The right changeover point for each shot / Reinhard Schiffers in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 11 (11/2014)
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Titre : The right changeover point for each shot : APC adaptive process control from KraussMaffei ensures robust injection molding processes Type de document : texte imprimé Auteurs : Reinhard Schiffers, Auteur ; Stefan Kruppa, Auteur ; Stefan Moser, Auteur Année de publication : 2014 Article en page(s) : p. 26-30 Langues : Anglais (eng) Catégories : Matières plastiques -- Moulage par injection
Procédés de fabricationTags : 'Moulage par injection haute précision' 'Commande de processus adaptatif' 'Amélioration la production' Qualité Index. décimale : 668.4 Plastiques, vinyles Résumé : High-precision injection molding processes, too, are subject to a variety of disturbances, such as fluctuations in batches, production breaks and compounding in of recyclate and masterbatches. With the innovative technique of adaptive process control, it is possible to automatically respond to fluctuations still during injection. As a result fewer interventions by the user are necessary – the process can be started up faster and is robust to disturbances. Note de contenu : - Adaptive process control : function and mode of operation
- Correcting holding pressure level in the current cycle
- Increased process and product quality
- Accelerated start-up processes
- High recyclate proportion without disturbanceEn ligne : https://drive.google.com/file/d/1GiuhOqf0Dj8bwNLlpfR_rceCKmKCkAJh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22626
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Code-barres Cote Support Localisation Section Disponibilité 16688 - Périodique Bibliothèque principale Documentaires Disponible Three-dimensional melt flow system in the hot runner manifold block / Simon Wurzbacher in KUNSTSTOFFE INTERNATIONAL, Vol. 113, N° 4 (2023)
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Titre : Three-dimensional melt flow system in the hot runner manifold block : Mass channel design using additive manufacturing opens up quality advantages Type de document : texte imprimé Auteurs : Simon Wurzbacher, Auteur ; Lucas Schulz, Auteur ; Stefan Kruppa, Auteur ; Reinhard Schiffers, Auteur Année de publication : 2023 Article en page(s) : p. 47-51 Langues : Anglais (eng) Catégories : Canaux chauffants
Impression tridimensionnelle
Matières plastiques -- Moulage par injection
Moules d'injectionIndex. décimale : 668.4 Plastiques, vinyles Résumé : The objective of the hot runner design is to ensure that all cavities are supplied with the same melt quality, filling and compression pressures and filling speeds without damaging the melt along the way. The distributor block plays a key role in this process, as it is responsible not only for melt transfer but also for distributing the melt to the individual cavities. Additive manufacturing enables significant improvements in this area – in several dimensions.
Note de contenu : - Manufacturing hot runner manifold blocks
- Challenges for manifolds that deviate from 2x cavities
- Experimental setup of a six-cavity test mold
- Numerical analysis of the conventional design
- Design of a three-dimensional manifold system
- Significantly faster purging process
- Fig. 1 : Possibilities of melt channel design for naturally balanced manifold blocks in dependence on manifold block manufacturing method
- Fig. 2 : The six-cavity test mold is used to produce simple closure caps as test specimens
- Fig. 3 : Meshing and results of the numerical study of the conventional manifold (double-Y system). In regions of melt division and deflection, zones of low velocity and low wall shear stress are found
- Fig. 4 : Simulation results of three-in-row distribution and comparison of wall shear stresses of drilled and additively manufactured manifold block
- Fig. 5 : Color exchange trials make clear that purging processes are much more effective on the additively manufactured manifold. The injection molding parameters are summarized belowEn ligne : https://drive.google.com/file/d/1T7-o0XnPQwL9IX86W3LJtoebeI04JcxQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40152
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Code-barres Cote Support Localisation Section Disponibilité 23959 - Périodique Bibliothèque principale Documentaires Disponible Today packaging, tomorrow raw material / Jochen Mitzler in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 10 (10/2019)
PermalinkUseful process data from the injection molding machine / Felix A. Heinzler in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 2 (02/2014)
PermalinkWhy must the process control make corrections on restart ? / Stefan Kruppa in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)
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