Apparatus for extruding flowable materials

Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Feed control of material en route to shaping area

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Details

15624411, 156356, 156500, 26417717, 26417719, 264261, 264323, 901 6, 901 46, 425149, 425162, 425170, 425192R, 4253791, B29C 4792, B30B 1526

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053583973

ABSTRACT:
A light weight extruder (20) is suitable for high production, in-line extrusion of flowable materials with high precision in the placement and control of the extruded material. The extruder uses a high torque hydraulic motor (72) to drive a feed screw (88) in dispensing highly viscous but flowable material through an extrusion die (126) of preselected configuration. A plurality of heating bands (114-118) surrounding the barrel (86) of the extruder provide precise control over the material temperature at the point of extrusion. In an alternate embodiment, an injection nozzle (120a) is provided with a plurality of independently controllable extrusion dies (128, 130, 132). The extruder is sufficiently light and manipulable such that it can be mounted on the end of the arm of a robot (122).

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