| 摘要 |
A blow head for extruding a tubular plastic preform from an outlet gap between a fixed die core (2) and a die body (10) allows a change of the width of the outlet gap as a function of the circumference using light and small actuating devices, e.g., double-acting actuator cylinders (21, 23), if the die body (10) has its upper end, facing away from the outlet gap, pivotably mounted in the blow head and a pressure ring (12) is positioned in the outlet gap, on which the actuating devices (21, 23) act. |
