DEVICE FOR CONTINUOUS PIPE MANUFACTURING FROM COMPOSITE FIBER MATERIAL, AND METHOD OF DEVICE MANUFACTURING Russian patent published in 2008 - IPC B29C53/60 B29C53/56 

FIELD: technological processes.

SUBSTANCE: device has a form of self-feeding arbor and includes a sector cluster forming inner pipe surface and consisting of several couples of opposite sectors and carrier elements positioned in internal cluster cavity and connected rigidly to each sector of the couple. Each sector couple can move reciprocally in axial direction at axial sector pace distance with the help of a drive independently from other couples. Carrier elements are plates with width not exceeding sector, positioned in sequence along an arbor axis. Symmetry axis of cross-section of each next plate is displaced against the previous plate axis at an angle equal to relation of 360° to the number of sectors. Distance along axis between end of one plate and beginning of another plate is longer axial sector pace at by an amount of secured axial clearance between the plates. Method of device manufacturing involves sector blank connection to carrier elements with an allowance on the external surface, and sector assembly into a sector cluster. Mechanical cluster treatment is performed in assembled state. In the first cluster couple both sectors are welded to carrier elements before cluster assembly, other couples except for the last one are assembled starting from one sector with carrier element welded to it in advance, and another separate sector. During assembly of that couple into a cluster a separate sector is welded at one side of carrier element, the couple is turned against arbor axis, and the sector is welded at the other carrier element side to assemble the last sector couple including a carrier element divided into two parts in height. Each part of carrier element is welded to the relevant sector, then the parts are assembled together, simultaneously with assembly of the last couple in cluster by connection elements, such as screws or pins, put through holes in one sector and both parts of carrier element, and the hole is stopped by a plug from outside. Mechanical treatment of external cluster surface is performed over separate areas, so that adjoining areas are drawn in radial direction by winding these areas with tensioning bands imitating fiber material tension during pipe manufacturing.

EFFECT: increased pipe production rate, quality and reliability, and reduced labour expenditure and costs of device manufacturing and assembly.

12 cl, 10 dwg