Injection molding cast manifold

Details Injection molding cast manifold Injection molding cast manifold

B - Operations, Transporting

29

C

18/680

B29C 45/27 (2006.01)

Patent

CA 2017055

ABSTRACT OF THE DISCLOSURE A cast manifold for distributing pressurized melt in an injection molding system. The melt is received at a central inlet on the rear surface of the manifold to an inlet portion of a melt passage. Four identical outlet portions of the melt passage branch radially outward from the inlet portion to equally radially spaced outlets on the forward surface of the manifold. Each outlet portion extends around a first smoothly curved bend from the inlet portion, along a radial portion, and then around a second smoothly curved bend to the outlet. By casting on a removable ceramic mold, the bends in the melt passage are very smoothly curved and do not all have to extend in a common plane. Furthermore, the radial portions angle a substantial distance rearwardly as they extend outwardly which allows the thickness of the manifold to be reduced.

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