Press installation and control method for a press installation

A control method for a press installation that includes a servo press, a first conveyor device for conveying first and second pieces from a position of origin to the servo press, and a controller that controls the movement of the first conveyer device and the movement of the servo press, the method comprising:

• conveying the first piece to the position of origin through a predetermined position of reference;
• determining a first time elapsed for the first piece to pass through the predetermined position of reference and storing the first time elapsed in a memory of the controller as a reference time;
• conveying the second piece to the position of origin through the predetermined position of reference;
• determining a second time elapsed for the second piece to pass though the predetermined position of reference;
• comparing in the controller the second time elapsed with the reference time;
• controlling the movement of the first conveyor device and the movement of the servo press by means of a same master signal emitted by the controller to cause a synchronized actuation of the first conveyor device and the servo press in a manner that prevents the servo press from stopping during the conveyance of the second piece to the servo press, the master signal being adjusted for speeding up the actuation of the servo press if the second elapsed time is less than the reference time, for slowing down the actuation of the servo press if the second elapsed time is greater than the reference time, and for maintaining the actuation speed of the servo press if the second elapsed time is the same as the reference time.

A press installation comprising:

• a servo press having an adjustable actuation speed;
• a first conveyor for conveying first and second pieces from a position of origin to the servo press;
• a controller configured to control an actuation of the first conveyor and of the servo press in a synchronized manner by means of a same master signal;
• a second conveyor configured to convey the first and second pieces to the position of origin through a predetermined position of reference;
• a detector operatively coupled to the controller and configured to detect first and second elapsed times for the first and second pieces to respectively pass through the predetermined position of reference;
• the controller being configured for adjusting the master signal depending on a comparison of the first and second elapsed times to cause the actuation speed of the servo press to be adjusted in a manner that prevents the servo press from stopping between the conveyance of first and second pieces to the servo press.