APPARATUS FOR CONTINUOUS EXTRUSION Russian patent published in 2003 - IPC

FIELD: apparatuses for continuous extrusion having rotating peripheral groove for supplying initial material to duct formed between groove and arc-shaped part protruded into groove. SUBSTANCE: apparatus has groove in central portion of cylinder; the last has end bosses secured to supports in such a way that deformation occurred after very high extrusion pressure in duct is minimized and load is distributed on supports for preventing load concentration or random undesired high changes of levels of local load. One end of cylinder is joined with drive shaft outside support through splined end portion of drive shaft arranged in end recess of cylinder or it is possible to use bolt joint. Tightening bolt passes coaxially relative to cylinder and it serves for applying compression axial load on cylinder in order to counteract compression efforts occurred at extrusion process. Supports have rollers directly engaging with end bosses of cylinder; the last may freely expand axially relative to one set of rollers. Cooling and lubricating fluid is fed to supports and to end bosses. Cooling agent also may be fed through ducts lined by copper branch pipes passing axially relative to cylinder. Carrying surfaces of end bosses and central part of cylinder are in the form of portions having increased strength in comparison with other parts of cylinder. EFFECT: increased rigidity of structure due to transmitting torque through unit non-subjected to radial load. 11 cl, 1 dwg