Vertical injection molding machine

Details Vertical injection molding machine Vertical injection molding machine

B - Operations, Transporting

29

D

18/680

B29D 22/00 (2006.01)

Patent

CA 1270107

ABSTRACT A vertical injection molding machine having an upper die 26 and a lower die 27 which are adapted to be brought together in the vertical direction by the force produced by a die closing device. The injection molding machine has an injection unit 1 disposed below the lower die 27 and is hinged through a hinge shaft 36 to a truck 35 movable along rails 37, such that the injection unit 1 is swingable vertically about the axis of the hinge shaft 36. The vertical swinging motion of the injection unit 1 is effected by cylinders 38 connected to an injection head 2 of the injection unit 1. A compression forming cylinder device 70 is provided on the lower end of each of a plurality of tie-bars which are connected between the upper die 26 and the lower die 27. Each of the compression forming cylinder devices 70 operates to urge the upper die 26 upward away from the lower die 27 through a pressing member 68, thus creating a small clearance between the upper die 26 and the lower die 27 when these dies are held in the closing position by the force of a die closing device 3.

522572

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