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1. (WO2013144439) METHOD AND APPARATUS FOR A PRESSING PROCESS

Pub. No.:    WO/2013/144439    International Application No.:    PCT/FI2013/050326
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 23 00:59:59 CET 2013
IPC: B30B 15/20
B30B 9/30
B30B 15/26
H02P 3/18
Applicants: TEKNO-TIKKA OY
Inventors: BLOM, Janne
Title: METHOD AND APPARATUS FOR A PRESSING PROCESS
Abstract:
The invention relates to a method and apparatus for a pressing process, such as for use of a waste compactor or the like, wherein a pressing force needed in the pressing process is being produced by action of an electric press motor (1 ), by using a mechanical drive assembly or preferably a hydraulic pump arrangement (2), being coupled to a pressure medium system, whereby the hydraulic fluid, is being directed through a valve arrangement (3), into an actuator cylinder arrangement (4), in order to move a pressing piston (5) or the like. The pressing process is being carried out in a controlled manner by a programmable logic (6) and monitoring means (7) coupled therewith. In the method frequency inverter principle is being exploited particularly in order to enable use of the press motor (1 ) in a steplessly adjustable manner and depending on the situation/circumstances with a speed both lower and higher than its nominal speed.