Rotary Plate
Different from machines where the workpiece is handled by a robot, here the part remains inside the mould while it is transferred from the cavity for material #1 to the cavity for material #2. Here, it is characteristic that the moulded part remains on the ejector end during the full production cycle. Thus, the cavity and thus the part’s geometry can only be modified for the mould half on the nozzle end. An exception to this rule are lifting strokes in the dial, which allow different positions of contour pins on the contour’s ejector end through the rotary movement.
For two-component parts (2 stations in the mould), the pre-injected blank is moved to the second injection position through a turn through 180 degrees. With three or four components (three or four stations), this angle of rotation is only 120 or 90 degrees respectively.
Simultaneous filling of both stations
The ejected finished moulding, turning the
pre-injected blank
Benefits
- The pre-injected mouldings will remain on the core such that there will be little warpage only
- Short cycle times
- Particularly suitable for high cavity numbers
- Low number of components used, resulting in less downtime and high availability
Application examples
- Automobile rear lights
- Hard-and-soft interfaces in the field of electrical equipment or appliances
- Wet shaver to obtain a soft touch across the handle