Investigation of an inverse thermal injection mould design methodology in dependence of the part geometry

Abstract The production of injection moulded components with low shrinkage and warpage is a constant challenge for manufacturers. thermal design the mould plays an important role achievable quality, especially placement cooling channels. This usually based on empirical knowledge designers. construction supported iteratively by moulding simulations. In case thick-walled plastic optics big wall thickness jumps, compensated compression moulding. this process, thin-walled areas freeze earlier necessary pressure introduces stresses into these which reduces optical performance. An adapted channel can reduce problems. At IKV, Institute Plastics Processing in Industry Crafts at RWTH Aachen University, methodology was developed inversely calculates requirement part A demand-oriented system derived computed results. aim research projects to minimise displacement internal temperature control parts according demand. paper, applied three different geometries, representing classical process. Three quality inverse optimisation are defined investigated. For each geometry designs then validated simulations results from optimisation. It be shown that component geometries thicknesses, advantageous decrease maximum parts. ribbed components, 2D approach leads 15% smaller displacement, all investigated ranges show no differences but surface middle preferred due 3 °C lower standard deviation distribution.