Patent ID: 9266276
Filing Date: 2016-02-23
CPC Classification: B29C,B29D,F16K

Claim Text:
1. A shaping apparatus ( 1 ) for the shaping of plastics material pre-forms ( 10 ) into plastics material containers ( 10 A) with a plurality of blow moulding stations ( 8 ) and with at least one control device ( 55 ; 55 A; 55 B; 55 C) for the control of blow moulding pressures and/or volume flows at the blow moulding stations ( 8 ), in which the at least one control device ( 55 ; 55 A; 55 B; 55 C) comprises at least one control valve ( 56 ) with a control piston part ( 58 ) which is guided in a cylinder part ( 57 ) and by means of which a cross-section ( 59 ) of a blow moulding air duct ( 60 ) is capable of being closed, wherein the control device ( 55 ; 55 A; 55 B; 55 C) has a drive unit ( 61 ; 77 ) operating in an electromagnetic manner in order to effect a change in position of the control piston part ( 58 ) inside the cylinder part ( 57 ) and thus also to control the blow moulding pressures and/or volume flows at the blow moulding stations ( 8 ), wherein the drive unit ( 61 ; 77 ) operating in an electromagnetic manner comprises a measurement and detection unit by means of which the position of the control piston part ( 58 ) is or are capable of being determined.