Abstract An injection machine including a frame, tie bars mounted on the frame, bracket means slidably mounted on the tie bars, a plasticator mounted on the bracket means, first motive means mounted on the frame for moving the plasticator into position for injecting into a mold assembly, second motive means supported by the bracket means for selectively moving a plasticator screw axially within the plasticator, and third motive means supported by the bracket means for moving the plasticator screw rotatively, drive gear means comprising a portion of the third motive means being so disposed and arranged as to be readily replaceable, and means for readily replacing the plasticator screw, whereby to provide a compact machine having all necessary motive means thereon and suitable for handling several materials under varying conditions.
An injection machine comprising a frame, tie bars mounted on said frame, first bracket means supported by said tie bars, a plasticator mounted on said first bracket means, a cylinder supported by said first bracket means, motive means supported by second bracket means slidably mounted on said tie bars, a screw disposed on said plasticator, an extension of said screw extending through said cylinder and being connected to said motive means, a piston fixed to said screw extension and disposed within said cylinder, said cylinder being disposed between said screw and said motive means, said piston being operative in said cylinder to move said screw axially in said plasticator, and said motive means being movable axially with said screw and being operative to move said screw rotatively in said plasticator.
Claim 2
Dependent Claim
130 words
An injection machine comprising a frame, tie bars mounted on said frame, first bracket means supported by said tie bars, a plasticator mounted on said first bracket means, a cylinder supported by said first bracket means, motive means supported by second bracket means slidably mounted on said tie bars, a screw disposed on said plasticator, an extension of said screw extending through said cylinder and being connected to said motive means, a piston fixed to said screw extension and disposed within said cylinder, said cylinder being disposed between said screw and said motive means, said piston being operative in said cylinder to move said screw axially in said plasticator, and said motive means being movable axially with said screw and being operative to move said screw rotatively in said plasticator.
Claim 3
Dependent Claim
86 words
An injection machine according to claim 1 in which said motive means includes a set of gears for rotating the screw extension, said gears being retained on the second bracket by a separable part to facilitate removal and replacement of said gears from operative connection with said screw extension from one end of the machine and in which the screw and screw extension are operatively connected by a spline connection whereby the screw is axially removable from the plasticator from the opposite end of the machine.