Views: 0 Author: Site Editor Publish Time: 2020-07-27 Origin: Site
The undercut-forming pin can be inserted into the mold plate so that it can be moved as shown in Fig.7.2.
Operation: following solidification of the workpieces, the mold is opened. When the worker
ums handle 6, the eccentric disc 4 actuates the side inserts 1 by the swinging ring 3 connected to
the shaft 2. The eccentric disc 4 is located in the opposite dead position(as shown in Fig. 7. 2b)when
the undercut-forming pin is out off the plastic workpiece. During injection process, the eccentric
disc 4 is located in the inner dead position(as shown in Fig. 7. 2a). In this case the stroke of the insert
Is short. The side insert I has to be supported by the upper mold plate against the opening force
during shooting.
Advantage: simple configuration and low cost.
Disadvantage: manual work.
