INJECTION MOLDING MACHINE FOR REACTIVE MATERIAL

摘要

PURPOSE:To keep the temperature of a liquid passage of a mixing head uniform thereby stabilizing the quality of a molded item and making the injected amounts of two liquids highly accurate, by connecting both a piston consisting of a special stirring mechanism that draws and injects reactive raw materials and a special mixing head having a mechanism that injects the materials with stirring to one side of a block. CONSTITUTION:A concave fixed cone plate section 2 and a convex movable cone plate section 3 are loaded within a mixing head block 1. Two liquids (A), (B) are introduced from discharge liquid passages 10, 11 onto a shearing and stirring surface 9 where they are stirred and mixed. A piston driving screw 17 is moved forward and backward together with a piston 17 having stirring blades with the screw 17 being rotated for stirring. The reactive raw materials are drawn from a drawing port 24 to be supplied when the piston 17 is retracted, and then the reactive raw materials are discharged from a discharge outlet 10 into a mixing head cone section clearance part as the piston 17 is moved forward. The piston cylinder section is connected to a mixing head block 25 including a cone section and is held by a fixed arm 17.