Automatic control of injection moulding extruder - having circuitry covering screw pressure screw stroke and internal mould pressure

Automatic control of injection moulding extruder - having circuitry covering screw pressure screw stroke and internal mould pressure

A plastics injection moulding press., with hydraulically operated extruder to injection-mould and then consolidate the material and with control circuits (for nominal/actual setting devices, comparator, controller) for operating factors such as pressure, injection rate, mould pressure etc., has cont...

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Bibliographische Detailangaben
1. Verfasser: GLEIXNER,FRANZ
Format: Patent
Sprache:eng ; ger
Schlagworte:
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:A plastics injection moulding press., with hydraulically operated extruder to injection-mould and then consolidate the material and with control circuits (for nominal/actual setting devices, comparator, controller) for operating factors such as pressure, injection rate, mould pressure etc., has controller outputs connected to a selector switch. This only transmits the smallest control output signal, which is connected to a regulator via an amplifier. Delay-free response and control of screw stroke and speed, prevents excessive pressure rise.