Microinjection molding dosing device has bolts guided in columns with operation of the nozzle by an axially movable piezo element

摘要

The bolts (4) in a dosing device for microinjection molding are guided coaxially to the dosing chamber longitudinal axis in columns (5) and operate the nozzle (3) by a piezo element (8) movable axially around an actuating distance, the dosing device being of the type with a melting zone connected to a cylindrical, volume-adaptable dosing chamber bounded on one side by a bolt-movable nozzle and on the other by a pressure-acting column and the connection of the melting zone to the chamber being movable by a radially pivotable sleeve which has a slit running parallel to the chamber axis.