Locating frame for units for drawing and compacting bundles of textile fibers

A locating frame for drawing and compacting units of a pair of adjacent spinning stations in a spinning machine, in which a drawing unit associated with a compacting unit is provided in each station for drawing and compacting a bundle of textile fibres, and in which each drawing unit has a pressure roller from which the bundle of fibres is passed to the compacting unit and which rotates a pressure roller of the compacting unit, by means of a transmission belt, the frame comprising:

• two pairs of seats for housing and keeping parallel and spaced apart two axles on which the pressure rollers of the drawing units and the pressure rollers of the compacting units of the two adjacent stations are mounted rotatably,
• first transverse locating means spaced apart longitudinally and acting on the axles in order to keep the pressure rollers of the same spinning station aligned longitudinally, and
• second transverse locating means spaced apart transversely for keeping the two transmission belts of the two adjacent stations, respectively, aligned with engagement surfaces fixed for rotation with the pressure rollers.