DEVICE FOR CONTINUOUS MANUFACTURING OF PIPES FROM COMPOSITE FIBROUS MATERIAL Russian patent published in 2009 - IPC B29C53/56 B29C53/30 B29D23/00 

FIELD: technological processes.

SUBSTANCE: invention may be used in production of pipes from reinforced plastics and other products. Device for continuous making of pipes from composite fiber material in the form of self-feeding holder, comprises block of sectors that forms internal surface of pipes and consists of several pairs of diametrically opposite sectors and supports installed in internal cavity of block and rigidly joined with each sector from pair, besides, each pair of sectors may execute reciprocal motion in axial direction by value of axial travel of sectors by means of driving mechanisms independently on other pairs. Number of coupled surfaces in supports is equal to number of sectors. In specified device coupled surfaces of supports and sectors in cross section are arranged in the form of circumferential arcs that have common centre on circumference with diametre that is more than diametre of transverse contour of support. Rigid connection of each support with pair of sectors is done with the help of single connection part, for instance, by means of bolt or pin. Distance along axis between two neighbouring supports is selected as more than sum of support thickness and axial travel of sectors by value of guaranteed axial gap between supports. Geometric parametres of coupled surfaces of support are arranged so that to provide for required tangential gap between two neighbouring sectors, for instance, within the limits of 0.3-0.6 mm after mechanical processing of external surface of sector block. Openings in sectors for connection elements are closed with plugs having external surface that matches external surface of sector block.

EFFECT: provision of significant increase of sector block rigidity and improvement of structure manufacturability.

4 cl, 5 dwg