A device for producing plastic pipes, the device comprising:
- an extruder with a die head and a corrugator, into which a molten plastic tube is introduced by means of the die head in order to mold the plastic pipe, wherein
- the corrugator has a molding section, in which molding jaws are guided in pairs in a production direction,
- in an inlet section of the corrugator, the molding jaws are brought together to form molding jaw pairs towards the start of the molding section,
- in an outlet section of the corrugator, the molding jaw pairs are moved apart from each other from the end of the molding section, and
- in an intermediate section of the corrugator arranged between the inlet section and the outlet section, the molding section is formed to guide the molding jaw pairs and at least one return guide is formed in which the molding jaws are returned from the end of the molding section to the start of the molding section;
- and
- a stationary guiding apparatus for guiding the molding jaws in at least one of the molding section or the return guide, wherein
- a) the guiding apparatus has at least one of a guide apparatus or temperature-control element apparatus,
- b) the at least one of the guide apparatus or the temperature-control element apparatus has a temperature-control medium channel apparatus through which temperature-control medium can flow,
- c) the at least one of the guide apparatus or the temperature-control element apparatus has at least one of a guide surface apparatus or temperature-control surface apparatus, which faces an outer side of the molding jaws passing through, transferring heat,
- d) in the at least one of the guide surface apparatus or the temperature-control surface apparatus of the at least one of the guide apparatus or the temperature-control element apparatus, guide recesses having at least one of elevations, depressions or flat guide surfaces are formed which interact with at least one of corresponding guide recesses or guide surfaces of the molding jaws passing through, and
- e) the at least one of the guide apparatus or the temperature-control element apparatus is formed such that at least one of the molding jaw pairs passing through in the molding section or given ones of the molding jaws passing through in the return guide are at least partially covered on an outer side of each molding jaw, wherein each of the molding jaws has two guide pins for engaging in guide grooves of a deflection area of the stationary guiding apparatus and has toothed strips, the toothed strips formed so that they are arranged on corners of the molding jaw pairs, and the molding jaw pairs having a rectangular cross-section with a toothed strip at each of its four corners.