Winding bobbin dampener - has hydraulic piston unit to dampen oscillations on bobbin path towards the contact drive roller

摘要

To dampen oscillations at a winder, where the bobbin is rotated by contact with a drive roller, the bobbin oscillations are dampened on the bobbin path towards the drive roller. Pref. a hydraulic dampening action is used. The dampener (5) has a cylinder (51) with a piston (52) on a piston rod (53) to transmit the movement of the bobbin holder (2) to the piston (52). The piston (52) has openings (56) to allow the medium in the cylinder (51) to flow through. The openings (56) are closed on a movement of the bobbin (4) towards the drive roller (2), and are opened on a reverse direction. The piston openings (56) are covered by a membrane (57), pressed against the piston (52) by a spring. The piston (52) has overflow channels for medium overflow in the dampening direction of the piston (52). One end of the dampener (5) has a claw, for a snap fit to a mounting bolt, using a plastics claw with a spring to reinforce the clamping action on the mounting bolt. ADVANTAGE - The technique dampens oscillations in bobbins which bear against the drive roller with only a light pressure, and rotate at high speeds, to give a consistent bobbin winding.