Abstract Mould temperature control has a significant influence on component quality and costs in the plastic injection moulding process. In case of standard applications isothermal control, which mould is maintained at one level, sufficient. For special (e.g. optics; long, thin components; microstructures) variothermal using cyclically changing temperatures beneficial. Therefore, use infrared r...

The quotation in the field of injection mould tool manufacturing is still so difficult mission and means so great challenge that leads the manufacturers be more bottleneck providing huge differences between the results of cost and time calculation following hand-rules or experiments. The simple cause of this is the very fact they must estimate the mould’s design and manufacturing time and cost ...

appropriate distance for the sources to be placed from the skin surface. The trajectories which the sources would take were then drawn, with uniform separation, on this surface. The mould was completed by extending the surface further and then subtracting the trajectories. The complete STL file was then sent to the printer for fabrication by the Stratasys Objet500 Connex1 printer, and printed u...

On the basis, of the condition for demouldability, two levels of visibility, complete and partial visibility, are defined. The viewing directions from which a surface is completely visible can be represented as a convex region on the unit sphere called the visibility map of the surface. Algorithms are given for dividing a given object into pockets, for which visibility and demouldability can be...

Composite moulds constitute an attractive alternative to classical metallic when used for components fabricated by processes such as Resin Transfer Moulding (RTM). However, there are many factors that have be accounted if a correct design of the is sought after. In this paper, Finite Element Method (FEM) help in mould. To do so, thermo-electrical simulation has been performed through MSC-Marc p...