Automatic design of conformal cooling channels with an asymmetric centre

In this paper, a compensation-based calculation method is proposed for designing a CCC with an asymmetric centre to make the temperatures of the core and cavity moulds uniform. By redefining the parting line, a heat accumulation centre can be obtained and the distance between a cooling channel and a plastic part can be calculated to ensure a more uniform temperature distribution, thereby reducing the severity of volumetric shrinkage and deformation. Two case studies with different characteristics were used for verifying the proposed method. One is a flat part large thickness difference; the other is a uniform thickness with a large curved surface. According to the analysis results obtained in the aforementioned cases, the CCC with an asymmetric centre not only reduces the temperature of molten plastic rapidly to the ejection temperature, but also effectively evens the temperature variation over the entire mould cavity.