| 摘要 |
The device (50) has two slotted wheels (51, 56) moved around two rotation axes (53, 57), respectively, where the axes are contained in a median plane (58). Notches of wheels are divided into two peripherals (67, 70). Two guides (55, 60) are extended from the plane toward the median plane. Each notch is delimited by an edge (61c, 63b) cooperating with one of the guides. Flanges (62c, 64b) downstream of the notches are designed to prevent the interfering rotation of the wheels with a reference circle of the notches corresponding to the opposite wheels. An independent claim is also included for an installation for blow molding a preform. |
