| 摘要 |
<p>In an automatic cleaning device for use in the thermoplastics extrusion plastometer comprising a piston cleaning unit, a conveying unit, a cylinder cleaning unit and a die cleaning unit: the piston cleaning unit (65, 74, 81) cleans the surface of the piston (27) at plasticity testing position; the conveying unit (8, 9) moves the cylinder from the plasticity testing position to a cylinder cleaning position and to a die cleaning position; cylinder cleaning unit (36, 52) cleans the interior surface of the cylinder at cylinder cleaning position; and the die cleaning unit (95, 104) cleans the interior surface of the die at the die cleaning position.</p> |
