Patent ID: 8387526
Filing Date: 2013-03-05
Classification: B29C,B30B

Abstract:
1. A precision press device comprising: a pressurized section; a pressurizing section opposed to the pressurized section and disposed in a manner movable forward or backward with respect to the pressurized section; press stages mounted on opposing surfaces of the pressurized section and the pressurizing section; a drive section that drives the pressurizing section; and a chamber having a tubular wall that surrounds the press stages so that the press stages are sealed between the pressurized section and the pressurizing section when the pressurized section and the pressurizing section are located close to each other, wherein the precision press device comprises a fluid operation section that cancels out attractive forces between the pressurized section and the pressurizing section generated based on a negative pressure in the chamber, wherein the fluid operation section comprises: a cylinder that constitutes the tubular wall and is provided for at least one of the pressurized section and the pressurizing section; a tubular plunger provided in a manner movable forward or backward with respect to the other of the pressurized section and the pressurizing section based on a fluid pressure in the cylinder; and a pressure control section that controls the fluid pressure in the cylinder and generates a pressurizing force which is a force in a direction that cancels out the attractive forces between the pressurized section and the pressurizing section in the tubular plunger.