Abstract: The invention under consideration concerns a device for the production of corrugated pipes made of thermoplastic, in which mold jaws, which complement each other in pairs, are conducted jointly in a cycle along a mold section that leads away from an extruder head; they are moved apart at the end of the mold section and are returned to its beginning separately from one another with a mold section device for the movement of the mold jaws along the mold section, which has a supporting table with drive means for the mold jaws on the mold section, and with a return conveying device for the return conveyance of the mold jaws from the end of the mold section to its beginning, which has an outlet assembly to move apart the mold jaws at the end of the mold section and/or an inlet assembly to move in the mold jaws at the beginning of the mold section.

Abstract: The invention under consideration concerns a device for the production of corrugated pipes made of thermoplastic, in which mold jaws, which complement each other in pairs, are conducted jointly in a cycle along a mold section that leads away from an extruder head; they are moved apart at the end of the mold section and are returned to its beginning separately from one another with a mold section device for the movement of the mold jaws along the mold section, which has a supporting table with drive means for the mold jaws on the mold section, and with a return conveying device for the return conveyance of the mold jaws from the end of the mold section to its beginning, which has an outlet assembly to move apart the mold jaws at the end of the mold section and/or an inlet assembly to move in the mold jaws at the beginning of the mold section.

Abstract: The present invention relates to an apparatus for the manufacture of corrugated pipes from thermoplastic in which mould segment halves, which complement one another in pairs, are guided together in a circuit along a mould path adjacent to an injection head, are moved apart at the end of the mould path and are returned back to its start separately from one another. The apparatus has a mould path device to move the mould segment halves along the mould path and a return conveyor to return the mould segment halves from the end of the mould path back to its start, with the mould path device comprising a machine table having a lower guide and lower drive means for the mould segment halves and a cover frame secured to the machine table having an upper guide and upper drive means for the mould segment halves.

Abstract: Specific lengths of tube sections have to be severed from a run of spiral seam tubes being produced, in order to facilitate handling and storage. A cutter, with which sections of tubes can be severed cleanly without the formation of burrs from the run of tubes, comprises a carriage that can be slid back and forth on guides at right angle to the axis of the tube and on which carriage are mounted in the cut plane a milling cutter and shears, both of which can be moved on the tube independently of each other and back again with controlled drives.

Abstract: The present invention relates to an apparatus for the manufacture of corrugated pipes from thermoplastic in which mould segment halves, which complement one another in pairs, are guided together in a circuit along a mould path adjacent to an injection head, are moved apart at the end of the mould path and are returned back to its start separately from one another. The apparatus has a mould path device to move the mould segment halves along the mould path and a return conveyor to return the mould segment halves from the end of the mould path back to its start, with the mould path device comprising a machine table having a lower guide and lower drive means for the mould segment halves and a cover frame secured to the machine table having an upper guide and upper drive means for the mould segment halves.

Abstract: An apparatus for the manufacture of corrugated tubing of thermoplastic including a shaping path adjoining the head of an extruder, composed of a guide arranged in a frame structure, along which guide mold halves closed together in pairs as annular molds are advanced in close succession, said mold halves being provided on a lower side thereof with racks, at least one drive pinion arranged in the initial part of the shaping path for meshing with the racks of the mold halves as the same are pushed along the path, and an outlet, following the shaping path, in which the mold halves are separated from one another and are transferred to mutually separate return paths, on which they are shunted back by a conveyor to the inlet.

Abstract: An apparatus for the production of corrugated tubing from thermoplastic synthetic resin including a shaping path following an extrusion head of an extruder and composed of a guide which is arranged in a frame and on which mold halves, fitted together in a pair at an inlet to define annular molds in a compact train as a travelling mold moving with the tube are advanced by at least one drive pinion arranged at an initial part of the shaping path, the pinion being in mesh with racks on the fitted together mold halves. At an exit point following the shaping path, the mold halves are separated from one another and are gripped by gripping arms provided with coupling devices and area shunted back to the inlet of the shaping path. The gripping arms are bearinged by drives in a movable fashion on carriages. The carriages are able to be reciprocated by drives on guides on return paths parallel to the shaping path.