Patent ID: 6168417
Filing Date: 2001-01-02
Classification: B29C

Abstract:
A vertical molding machine provided with a pre-plastication injection unit comprising: a clamping device; a pre-plastication injection unit comprising an injection unit and a plastication unit disposed vertically in side-by-side relationship and being connected by a pipe; the said injection unit containing a heating cylinder, having a tip and having an arm member on a side thereof extending horizontally outwardly from such side thereof, said plastication unit containing a heating cylinder, having a tip and said plastication unit being held by said arm member, and said connecting pipe linking the tip of the injection unit and the tip of the plastication unit; a first pair of supports extending vertically from the clamping device and supporting the injection unit; a second pair of supports extending vertically from the clamping device and supporting the plastication unit; and a spring member disposed on the arm member so as to oppose the dead weight of the plastication unit on said connecting pipe and to counteract a difference in thermal expansion between the heating cylinders of the injection unit and the plastication unit.