Analiza brizganja polipropilena s prototipnim konformno hlajenim polimernim orodjem

DEŽMAN, JURE (author), Pepelnjak, Tomaž (mentor)

V magistrskem delu je predstavljena študija izdelave maloserijskega testnega izdelka iz polipropilena, injekcijsko brizganega v prototipno polimerno orodje, ki je izdelano s tehnologijo hitre izdelave orodja Polyjet. Z uspešno integracijo polimernega orodja v obstoječe modificirano orodje smo zagotovili hitrejšo pripravo na proces in povečali njegovo prilagodljivost. Z namenom učinkovitejšega hlajenja polimernega orodja je bil izdelan konformni hladilni kanal pod površino gravure izdelka. V procesu injekcijskega brizganja s „soft-tooling“ tehnologijo smo izdelali 60 testnih izdelkov z različnimi osnovnimi parametri injekcijskega brizganja, na katerih smo izvedli analizo vpliva parametrov na dimenzije, oblike in napake izdelkov. Na podlagi testa hlajenja polimernega orodja s hladilnim kanalom smo zaznali močan vpliv hlajenja, čeprav je polimerni material v osnovi manj toplotno prevoden kot jeklo.

• Language: Slovenian
• Keywords: injekcijsko brizganje hitra izdelava orodij polimerno orodje konformni hladilni kanal polipropilen
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-98463
• Publication date in RUL: 03.12.2017

Secondary language

• Language: English
• Title: Analysis of polypropylene injection molding with conformal cooled prototype polymeric tool

Abstract

In the following master’s thesis a study was presented the production of small-sized test product made of polypropylene, injection molded into a prototype polymeric tool, which is manufactured using rapid tooling technology Polyjet. With the successfully integrated polymer tool into existing modified tool, we have provided faster preparation for the process and increased its flexibility. For the purpose of more efficient cooling of the polymer tool, a conformal cooling channel was built below the surface of the product cavity. In the process of injection molding with soft tooling technology we made 60 test products with different basic process parameters on which we analyzed the influence of the parameters on the dimensions, shapes and defects of the products. Based on the cooling test of the tool with the cooling channel, a strong influence of cooling was observed despite the poor thermal conductivity of the material of the polymeric tool.

• Keywords: injection molding rapid tooling polymer tool conformal cooling channel polypropylene