Patent ID: 7651066
Filing Date: 2010-01-26
Classification: B29C,F15B,F16K

Abstract:
1. A device for high pressure pneumatic control, comprising: a control piston, carried in a cylinder that is mounted so as to be movable in the direction of a longitudinal piston axis, wherein a primary flow path that can be closed by the control piston passes through the cylinder and the primary flow path is arranged in a manner that the control piston is movable in a direction of the longitudinal axis of the control piston and the control piston is configured to be moved in the direction of the longitudinal axis of the control piston by a first pressure if a control pressure is reduced and wherein the control piston is made at least partially of a non-elastomer plastic and includes, a control surface, facing a control chamber of the cylinder and designed to transmit a control force to the control piston, and wherein the portions of the control piston in contact with the primary flow path are a non-elastomer plastic and a machine for blow molding thermoplastic material in which the pneumatic control is arranged, the machine having a rotatable blowing wheel and blow molding station arranged on the rotatable blowing wheel, the device for high pressure pneumatic control is configured to control blow pressure of the blow molding stations, wherein the blow pressure to be controlled is in the range of about 10 bar to about 40 bar.