Press device and press method

A press method for pressing a work using a press device which includes:

• a press head including:
• a press plate having a press surface which forms a work contact surface;
• a chamber base body disposed in a state where the chamber base body faces the press plate;
• and an elastic packing formed in a ring shape as viewed in a plan view and disposed between the press plate and the chamber base body;
• a provisional pressing unit including:
• a provisional pressing plate configured to transmit a provisional pressing force in a provisional pressing direction which is a direction along which the work is disposed;
• and a provisional pressing force applying mechanism configured to give the provisional pressing force to the provisional pressing plate;
• and
• a suppression unit configured to suppress movement of the provisional pressing plate in a counter provisional pressing direction which is a direction opposite to the provisional pressing direction, wherein the chamber is formed of a space surrounded by an inner surface of the press plate, an inner surface of the chamber base body and the elastic packing, the press method comprising in a following order:
• a provisional pressing unit advancing step of advancing the provisional pressing unit in the direction along which the work is disposed;
• a provisional pressing step of provisionally pressing the work by further moving the provisional pressing unit in the direction along which the work is disposed, and of directly or indirectly deforming the elastic packing by compression;
• a suppression unit activating step of activating the suppression unit while maintaining a state where the elastic packing is deformed by compression so as to restrict a displacement of the provisional pressing plate in the counter provisional pressing direction;
• and
• a main pressing step of generating a main pressing force on the work placed on the press surface by driving the press plate by introducing a pressurized fluid to an inside of the chamber from a pressurized fluid source.

A method of manufacturing a press product obtained by pressing a work using a press device which includes:

• a press head including:
• a press plate having a press surface which forms a work contact surface;
• a chamber base body disposed in a state where the chamber base body faces the press plate;
• and an elastic packing formed in a ring shape as viewed in a plan view and disposed between the press plate and the chamber base body;
• a provisional pressing unit including:
• a provisional pressing plate configured to transmit a provisional pressing force in a provisional pressing direction which is a direction along which the work is disposed;
• and a provisional pressing force applying mechanism configured to give the provisional pressing force to the provisional pressing plate;
• and
• a suppression unit configured to suppress movement of the provisional pressing plate in a counter provisional pressing direction which is a direction opposite to the provisional pressing direction, wherein the chamber is formed of a space surrounded by an inner surface of the press plate, an inner surface of the chamber base body and the elastic packing, the method of manufacturing a press product comprising in a following order:
• a provisional pressing unit advancing step of advancing the provisional pressing unit in the direction along which the work is disposed;
• a provisional pressing step of provisionally pressing the work by further moving the provisional pressing unit in the direction along which the work is disposed, and of directly or indirectly deforming the elastic packing by compression;
• a suppression unit activating step of activating the suppression unit while maintaining a state where the elastic packing is deformed by compression so as to restrict a displacement of the provisional pressing plate in the counter provisional pressing direction;
• and
• a main pressing step of generating a main pressing force on the work placed on the press surface by driving the press plate by introducing a pressurized fluid to an inside of the chamber from a pressurized fluid source.