Razvoj in snovanje novega krmiljenja zaporne igle pri injekcijskem brizganju elastomerov

Borštnar, Andraž (author), Benedičič, Janez (mentor), Kos, Leon (comentor)

Hladni blok na orodjih služi za zmanjševanje porabe gume pri brizganju izdelkov. V nalogi je predstavljen razvoj pogona zaporne igle v hladnem bloku. Pogon je izveden tako, da lahko določimo poljubno pozicijo zapiralne igle in s tem povzročimo režo. Ko material potuje skozi režo se zaradi trenja segreje. Pregret material v formi pa pomeni krajši čas vulkanizacije in posledično krajši časi ciklov brizganja izdelkov. Pri snovanju je bila zelo pomembna omejitev prostor, ter povišana temperatura okolja.

• Language: Slovenian
• Keywords: elastomeri, injekcijsko brizganje, hladni bloki, segrevanje zmesi, nastavljanje zaporne igle, snovanje
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [A. Borštnar]
• Year: 2020
• Number of pages: XXII, 41 str.
• PID: 20.500.12556/RUL-119460
• UDC: 678.027.74:678.074(043.2)
• COBISS.SI-ID: 30239747
• Publication date in RUL: 09.09.2020

Secondary language

• Language: English
• Title: Development and design of a new locking needle control for elastomer injection molding

Abstract

A cooling block is a part of the working tools. Its purpose is to minimise the consumption of rubber when injecting products. This work aims to present the development of the locking needle's drive in the cooling block. The drive enables a user to specify a location which causes a cut. When material travels through the cut, it warms up due to friction. However, the increased temperature causes a decrease in time of vulcanisation and product injection cycles. The results showed the importance of location restrictions and higher temperature of the working environment.

• Keywords: elastomers, injection molding, cooling blocks, heating of materials, location of locking needle, design