Emery roller - has emery carriers in wedge groove recesses to be held in self-locking action through centrifugal force

摘要

Emery roller, to roughen the surface of textile fibre piecegoods, has recesses(4) distributed round the circumference(3) of the roller body(2). Each recess(4) contains a carrier(5) for the emery, held in place by the centrifugal force from the rotating roller to be fixed in a positive and/or shaped fit. Positive mounting is through a clamp(18) and a wedge angle(alpha) at the self-locking zone of the material. At least one clamping body(19) is at the clamp(18), in a wedge-shaped cross section and of an elastic distorting material e.g. rubber/plastics, with at least one metallic core as the centrifugal body. Clamping body(19) is a longitudinal profiled body which, when using rubber as the clamping body(19) material with a steel roller(2), has a wedge angle (alpha) broadly of 10-16 deg. C., and pref. 12-14 deg.. Recess(4) to take the clamping body(19) to a groove with side surfaces(11,12) diverging radially inwards, with outer lateral grooves(7,8) to give the groove(4) cross section a T-shape, at an acute angle to the central wedge groove(6). Limit surface walls(9,10) for the lateral groove legs(7,8) of the T-shape are at an angle (beta) to each other which is larger than the wedge angle (alpha) of the side surfaces(11,12) of the central wedge groove(6). The groove limit walls(9,10) extending radially outwards at the side grooves(7,8) end at the opening of the wedge groove(6). The emery carrier(5) is a spring elastic strip, with an emery clothing(15) at its outer side, and its inner side is loaded by at least one clamp and centrifugal body(19). ADVANTAGE - Emery carriers can be assembled and dismantled easily at the roller body.