B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/66 (2006.01)
Patent
CA 2072976
A mold clamping system (10) for closing and opening a pair of cooperating mold halves (18, 34) in a molding machine (12). A toggle-type traversing arrangement is provided by a plurality of pivotally connected links (52, 54, 62), one of which (52) is connected with a movable crosshead (38) that is carried on a crosshead guide (40). A ball screw (76) is non-rotationally secured to the movable crosshead (38) to extend in the direction opposite from the face of a fixed position mold (18). A pair of ball nuts (90, 92) are carried by the ball screw (76) and each of the ball nuts (90, 92) is drivingly connected with a respective motor (82, 84). One of the motors (82) is adapted to provide rapid traverse movement for the movable crosshead (38), and the other motor (84) is adapted to provide high torque for high clamping force to hold the pair of mold halves (18, 34) in tightly contacting relationship during the injection of a flowable material into a mold cavity (20) defined by the mold halves.
Borden Ladner Gervais Llp
Cincinnati Milacron Inc.
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