Doffer device having a double gripper for a spinning machine
AssigneeMaschinenfabrik Rieter AG
InventorRobert Nägeli
Life of this patent
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Abstract
A doffer device for a spinning machine includes a plurality of gripping devices, each gripping device having a rotatable gripping unit. Each gripping unit includes a bobbin gripper that grips a full bobbin and a tube gripper that grips an empty tube. Each gripping unit is rotatable between a gripping position in which the full bobbin can be gripped on the spindle and a placement position in which the empty tube can be placed on the spindle. A rotating device is configured with the gripping units to rotate the gripping units about an axis of rotation such that neighboring ones of the gripping units are rotated with a time lag relative to one another. The rotating device is driven by a toothed belt.
Claims12
A doffer device for a spinning machine having a plurality of spinning stations, the doffer device configured to remove full bobbins from spindles on the spinning machine and place empty tubes on the spindles, the doffer device comprising:
- a plurality of gripping devices, each gripping device assigned to one of the spinning stations and comprising a rotatable gripping unit;
- each gripping unit comprising a bobbin gripper that grips the full bobbin and a tube gripper that grips the empty tube;
- each gripping unit rotatable between a gripping position in which the full bobbin can be gripped on the spindle and a placement position in which the empty tube can be placed on the spindle;
- at each spinning station, a rotating device configured with the gripping unit to rotate the gripping unit about an axis of rotation such that the gripping unit at neighboring spinning stations are rotated with a time lag relative to one another;
- wherein the rotating device is driven by a toothed belt;
- and
- wherein the rotating device is configured with a capacity limiter device.
A doffer device for a spinning machine having a plurality of spinning stations, the doffer device configured to remove full bobbins from spindles on the spinning machine and place empty tubes on the spindles, the doffer device comprising:
- a plurality of gripping devices, each gripping device assigned to one of the spinning stations and comprising a rotatable gripping unit;
- each gripping unit comprising a bobbin gripper that grips the full bobbin and a tube gripper that grips the empty tube;
- each gripping unit rotatable between a gripping position in which the full bobbin can be gripped on the spindle and a placement position in which the empty tube can be placed on the spindle;
- at each spinning station, a rotating device configured with the gripping unit to rotate the gripping unit about an axis of rotation such that the gripping unit at neighboring spinning stations are rotated with a time lag relative to one another;
- wherein the rotating device is driven by a toothed belt;
- and
- wherein each bobbin gripper comprises a bobbin gripper axis, and each tube gripper comprises a tube gripper axis, wherein the bobbin gripper axis and the tube gripper axis are at an angle to one another of between 4° and 10°.
Dependencies are inferred from the claim text.