| 摘要 |
There is disclosed a device for cooling and granulating strands of synthetic plastic material as they are continuously extruded through the discharge head of an extruder. The device comprises an extruder head with a plurality of side-by-side disposed discharge openings through which a corresponding number of strands are extruded. The strands are fed upon the pulling portion of a conveyor band disposed below the discharge head. The band has on its surface facing the discharge head a plurality of lengthwise grooves for receiving therein and holding spaced apart the strands fed upon it. The initially hot strands are cooled by directing a flow of coolant thereupon as they are carried along by the conveyor. A granulating device at the end of the pulling portion cuts the now cooled strands into pieces of selected length. The idling portion of the conveyor is subjected to cooling action so that is is reasonably cooled before it again becomes the pulling portion of the conveyor. |
