Apparatus for introducing injection material into a mold
AssigneeBucher-Guyer AG
InventorErich Schmidhalter
Life of this patent
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Abstract
By embodying a feed screw (17) for glass fiber reinforced polyester material with a hollow shaft, it is possible for the injection piston (11) for an injection unit (9) to have a compact structure so as to be passed through the feed screw (17). To process even viscous polyester compositions gently, the injection piston can be equipped with a plasticizer screw and an associated plasticizer motor.
Claims7
An apparatus for introducing glass fiber reinforced polyester injection material into a mold, said apparatus comprising a container for receiving the material to be injected, a rotatable screw conveyor connected to the receiving container and having a feed screw extending across a lower portion of said container in open communication along the length of said container with the glass fiber reinforced polyester injection material therein, said screw conveyor being embodied as a hollow shaft, injection piston penetrating said hollow shaft, and an injection unit for receiving said injection material advanced from the outlet of the feed screw, said injection piston being axially reciprocable lengthwise in said hollow shaft to introduce the injection material from said injection unit into the mold.
Dependencies are inferred from the claim text.