| 摘要 |
<p>A capping head assembly (10) has a first housing (14) with a spindle mounting collar (12) and supports a clutch housing (16). The clutch housing (16) has an upper portion (18) with a first magnetic ring (56) and a lower portion (20) with a second magnetic ring (58). The lower portion (20) is freely rotatable relative to the upper portion (18) and permits the adjustment of the air gap between the first and second magnetic rings. A locking mechanism (64) maintains the adjusted air gap at a selected value that represents a definable torque level in the magnetic clutch. The capping head (10) also includes a post assembly calibration system (84, 82) that establishes a known reference point, which compensates for manufacturing tolerances between individual capping heads.</p> |
