New Injection Units Permit Differential Injection
For Thin Walls or Complex Geometries
The lightweight design of parts often means using thin walls. With the new differential injection units from Dr. Boy GmbH & Co. KG, Neustadt-Fernthal, Germany, the user can flexibly adapt the injection unit to the mold according to whether one requires rapid injection for thin-walled parts, or very high injection pressures, for mold geometries that are difficult to fill. This flexibility is achieved by loading constant lists, which store the technical performance data of the particular plastication unit. "The injection units with 18 and 22 mm screw diameters are probably most in demand, since differential injection can be switched on or off as required," explains Martin Kaiser, Head of Mechanical Design at Boy. The new universal injection unit replaces all the previous units (SP 15/SP 52/SP 92).
Other benefits of differential injection units, besides higher injection rates and the shorter cycle times that possibly result from this, also include the fact that the time-consuming and expensive conversion work can be considerably reduced. "It is significantly easier just to load the respective constant list for the desired screw diameter that the alternative of converting the injection unit," says Kaiser.
Dr. Boy GmbH & Co. KG
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