| 摘要 |
The invention relates to a calibration and cooling apparatus for extruded plastic tubes. In a run-through cooling chamber 1 which is under negative pressure and has spray nozzles 3a, 3b, which are for a cooling fluid and are directed at the through-running tube 8, there extends from the inlet to the outlet of the tube 8 a guide element 2a, 2b, which is arranged slightly outside the operationally required position of the through-running tube 8. The guide element 2a, 2b is provided with a plurality of openings, through which spray nozzles 3a, 3b arranged behind them spray the cooling fluid onto the through-running tube 8. Provided at the inlet and at the outlet of the run-through cooling chamber 1 there are calibrating and sealing rings 7a and 7b, which comprise part-rings and can be opened out for the purpose of easier introduction of the beginning of the tube into the run-through cooling chamber 1. <IMAGE> |
