Patent attributes
A star wheel H of a blow molding machine 13 constituting a blow molding line 2 as a master machine driven by a motor M is provided with an encoder E for generating a pulse depending on rotation of the star wheel H, and a filling line 3 as a slave machine driven by first to fifth servomotors SM1 to SM5 is controlled by second control means 5 based on a pulse from the encoder E. In the event of an abnormality in the blow molding line 2, the second control means 5 controls the filling line 3 based on a pulse from a pulse generator 5a instead of a pulse from an encoder E, and thus performs processing of a vessel retained by the filling line 3. Even in the event of an abnormality in the master machine, the slave machine can be continuously operated.
