| 摘要 |
A mixing machine (1) comprises a base structure (2), a mixing tub (3) actuated by motorization (5) mounted on said base structure (2) and an extrusion device (7) mounted on said base structure (2) and provided with a metering screw (8) and with a contrast roller (9) set side by side with parallel longitudinal axes (11, 12) and operatively connected to said motorization (5). The metering screw (8) has an external delimitation surface that is substantially tangential to the lateral surface of the contrast roller (9). The extrusion device (7) comprises a frame (10) provided with fixing means (15) for locking the extrusion device (7) relative to the base structure (2). <IMAGE>
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