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Automated Design of Honeycomb Conformal Cooling Channels for Improving Injection Molding Quality

Luh Yuan-Ping, Chin Chien-Chuan, Iao Hong-Wai

Production Engineering Archives

2023

Vol. 29, Iss. 1

44--57

The study of conformal cooling channel usually has adopted two assumptions in model design: the use of (1) a hot runner system and (2) a one-mold-one-cavity design. These assumptions substantially simplify the research. However, most molds are designed using a cold runner system and multiple cavities. These two assumptions may not apply to all commercial systems; hence, a design method for honeycomb CCCs for cold runner systems and multiple cavities is proposed in this study. Specifically, an algorithm was developed to automatically design CCCs for such systems. This algorithm can be used to reduce the cooling time, improve product quality, and ensure that the system temperature is relatively homogenous in practical situations. According to the result of this study, the honeycomb CCC models were more effective at maintaining a homogeneous temperature distribution, reducing shrinkage, and reducing warpage for both parts produced from the same two-cavity mold, thus ensuring consistent part quality.

Moulds for high pressure die casting by Stratoconception®

Pelaingre C., Abel C., Velnom L., Thabourey J., Barlier C.

Prace Naukowe Instytutu Technologii Maszyn i Automatyzacji Politechniki Wrocławskiej. Konferencje

2004

Vol. 85, nr 42

173-180

In this paper, we present a rapid tooling study by Stratoconception process for die casting. This Study, which Avas carried out within the framework of the FASTOOL European project (CRAFT n° contract G1ST-CT-2001-50133), enabled to validate experimentally our technology with the mechanical and thermal constraints of the die casting process. Also, this study allowed us to consider its industrials applications. This mould has been manufacture from steel sheet. These sheets were transformed into stratum by use of two complementary cutting methods: laser cutting and high speed micro-milling method. Then, the strata were assembled by brazing in order to produce a laminated tool with the right mechanical properties. Thermal effects have a great influence in die casting mold, essentially on the lifetime of the mould. Thus we integrated and carried out conformal channels. The optimization opportunities of the cooling channels brought by our process provides new improvement prospects for thermal control of the mould. This R&D work has been then patented (PCT procedure). This first die casting mould allowed us to produce more than 2600 aluminum parts. The presentation of the mould design is completed by comparative technico-economic study between our process, other rapid tooling techniques and the conventional tool production method.