Accumulator-Head Extrusion Blow-Molding Machines - ISIT Series

The single-cylinder, twin-column mold-closing unit is one of the characteristic features of the ISIT Series extrusion blow-molding machines.

Machine components that may be subjected to deflection during transmission of the clamping force are designed independently of the platens to which the mold is mounted. This ensures perfect planarity and parallelism between the two mold halves under all operating conditions.

Mold changes are performed from above: the upper platform carrying the extrusion head moves backward, completely opening the area above the clamping unit. All movements are performed by electric motors and controlled by position sensors. This allows the extrusion head to return quickly and accurately to the correct position stored in the recipe for each mold.

For users who want to reduce mold-change times even further, magnetic mold-mounting platens are also available. When used together with other equipment such as quick-connect circuits, these systems make mold changes easier, faster and safer.

On the bottom-blowing unit, the position and spacing of the blow nozzles can be adjusted electrically, and the unit height is also adjustable. For simple and precise adjustment, the unit can be moved easily to a standby position where it contacts either half of the open mold.

Thanks to extruders with exceptional melting efficiency (high output with low energy consumption) and variable-speed hydraulic pumps, ISIT Series models achieve the highest energy-efficiency class under the EUROMAP 46.1 procedure for extrusion blow-molding machines: Class 10 — below 0.29 kWh/kg HDPE.