Patent ID: 8500432
Filing Date: 2013-08-06
Classification: B29C,B29L

Abstract:
1. A corrugator device for shaping thermoplastic corrugated pipes from a tube of molten plastics material emerging from an extrusion device, with molding jaws which are guided so as to circulate in a linear molding section and are arranged in pairs one behind the other so as to form a molding passage in the molding section, wherein the pairs of molding jaws are formed from left-hand and right-hand molding jaws and between them enclose a cylindrical mold cavity to form the molding passage; with grippers for returning the molding jaws from the end of the molding section to the start of the molding section; with a mold release device, which is arranged at the end of the molding section, has at least one motor-driven rotary disk and interacts with the pair of molding jaws that has reached the end of the molding section in that it moves the molding jaws of the pair of molding jaws apart; characterized in that the motor-driven rotary disk is formed with a central rotational axis perpendicularly on its disk surface and at least two drivers arranged on the disk surface, the distance between the first driver and the central rotational axis being smaller than the distance between the second driver and the central axis; in that the molding jaws are guided in such a way that, in the region of the end of the molding section, initially the first driver of the rotary disk interacts with the molding jaw to be released from the mold and, with further turning of the rotary disk, the second driver comes into engagement with this molding jaw.