Device for cooling and granulating molten thermoplastic strands emerging from dies

摘要

PCT No. PCT/EP93/00542 Sec. 371 Date Apr. 1, 1994 Sec. 102(e) Date Apr. 1, 1994 PCT Filed Mar. 10, 1993 PCT Pub. No. WO93/17850 PCT Pub. Date Sep. 16, 1993.A device for cooling and granulating molten thermoplastic strands (1) emerging from dies (2) which either drop along the falling line starting at the dies or are guided in an operating position through a coolant bath (9), freely stressed between guide rollers fitted in the bath and then taken into a granulator (4). In the region between the dies and the coolant bath there is a precooling device (5) which carries the plastic strands emerging from the dies and takes them to the coolant bath. Behind the precooling device there is a gripping device (21 ) with opposed clamping rollers (41, 42) which can open and shut and move along a guiding rail to grip the forward ends of the plastic strands after they have been separated by a separator (22) movable through the falling line of the strands. The rollers with the forward ends of the strands are moved along the guiding rail running through the region of the coolant bath as far as the granulator, where they release the strands thereinto.