Injection molding machine closure device, useful in molding polyurethane, comprises central rotatable mold support and outer mold clamping plates with sliding platform carrying mold halves

摘要

In an injection molding machine closure device with two outer mold clamping plates (1, 2) and a central rotatable mold support (3) with at least four mold clamping surfaces supporting mold halves, the plates and support being movable between closed and open positions, each outer plate has a sliding platform (4, 5) carrying at least two mold halves, movable orthogonal to the machine longitudinal axis and applicable to corresponding mold halves on the central support. An independent claim is included for a method for operating the device, involving moving the mold halves on one sliding platform (4) and the mold halves on the other sliding platform (5) to and fro from cycle to cycle in opposite directions between the operating side and the opposite side, so that on each sliding platform one mold half is moved away from the closure unit and the other mold half is position on the machine longitudinal axis.