| 主权项 |
1. A lock assembly for releasably coupling together a platen and a tie bar of an injection molding machine, the lock assembly comprising:
a) a first lock nut segment and an opposed second lock nut segment each slidably supported adjacent a bore extending through a platen, the lock nut segments translatable in a transverse direction towards and away from each other between a locked position for engaging a tie bar passing through the bore and an unlocked position for disengaging the tie bar, when in the locked position, a tensile force on the tie rod in an axial direction generally perpendicular to the transverse direction is transferrable to the platen via the lock nut segments, and when in the unlocked position, axial movement of the tie bars relative to the lock nut segments is unrestricted by the lock nut segments; b) an actuation mechanism for moving the first and second lock nut segments between the locked and unlocked positions; and c) a carrier assembly coupling together the platen and the lock nut segments, the carrier assembly including a slide surface extending in the transverse direction for slidably supporting the lock nut segments during translation of the lock nut segments between the locked and unlocked positions, the slide surface resiliently moveable in the axial direction between a loaded position in which the lock nut segments bear against the platen when the tensile force is applied to the tie bar, and an unloaded position in which the lock nut segments are spaced away from the platen by a clearance gap when the tensile force on the tie rod is released. |
