Patent ID: 6619944
Filing Date: 2003-09-16
Classification: B29C

Abstract:
An injection unit for an injection machine, comprising:a front-bearing plate; a rear-bearing plate having a nut; two fastening rods, each extending from said front-bearing plate to said rear-bearing plate; a movable plate disposed to slide on said fastening rods, and being disposed between said front-bearing plate and said rear-bearing plate; a guiding screw threadably engaged with said nut; a coupling enclosing a bearing, said coupling being fixed to said movable plate; a first time belt pulley disposed on said guiding screw and being connected to said coupling, said first time belt pulley being rotatable relative to said coupling; a load bearer locked to the coupling, and having an inner ring; a separate ring disposed between the bearing and the inner ring, with one side of the inner ring pressing against said separate ring; a bearing collar seat disposed on another side of the inner ring; a pressure sensor mounted on said load bearer; a plasticized auger that injects a gel at a pressure, with the pressure being detected by the pressure sensor; a shaft-fixing plate fixedly joined with said plasticized auger; a second time-belt pulley connected to said shaft-fixing plate; and a screw coupling connected to said movable plate, and being interlocked with said second time-belt pulley, said auger, and said shaft-fixing plate, said second time-belt pulley and said screw coupling being locked to rotate unitarily.