Delay_System

4 ��������� ����������� ��� �������������������� ��� �������� ��������� ��� �������������������� �������������� INTRODUCTION In order to meet the increasingly special and specific sheet metal forming requirements resulting from the need for complex and multi-profile geometries, Special Springs presents a new generation of cylinders with controlled return. As shown on the illustration, the main characteristic of the system is the possibility to time and adjust the return stroke of the cylin- der rod independently from the press cycle and speed. The cylinder return is operated by an electrical distributor which receives its switch signal from the command unit of either a mechanical or hydraulic press. In addition, the contrasting force displayed by the cylinders is constantly adjustable throughout the various phases of the working cycle according to the pre-set hydraulic pressure. TDC : top dead centre BDC : bottom dead centre