Spinning frame automatic doffing trolley

Abstract

The invention relates to an automatic doffing trolley of a spinning machine. The automatic doffing trolley comprises a doffing trolley body and an automatic doffing device. The automatic doffing device is arranged on a bottom plate located on the upper portion of the doffing trolley body. A pre-loosening mechanism of the automatic doffing device is arranged on the bottom plate of the doffing trolley body through a spring steel plate. A pre-loosening block is fixed on the spring steel plate. When the trolley moves forwards, the pre-loosening block moves forwards along with the trolley, is inserted into the lower end of a bobbin, and enables the lower end of the bobbin to ascend along an oblique plane of the pre-loosening block. Then, under the action of a plane cam, the pre-loosening block abuts against the lower end of the bobbin, moves upwards in the direction parallel to the axis of a spindle blade and enables the full bobbin to break away from the spindle blade under the blocking action of a spindle hook. The bobbin bounced upwards enters a manipulator device. The upper ends of claws of the manipulator device clamp the upper end, without yarn, of the full bobbin and then pull the full bobbin out. The pre-loosening force of the pre-loosening mechanism is parallel to the axis of the spindle blade and has little influence on a spindle bearing. The manipulator device clamps the upper end, without the yarn, of the bobbin, and the quality index of the yarn can not be influenced.

Description

technical field [0001] The invention belongs to the field of spinning frames, in particular to a trolley for automatic doffing of spinning frames. Background technique [0002] The CN2466174Y doffing manipulator patent announced on December 19, 2001 discloses a spinning frame doffing device. Its working method is as follows: the pre-loosening disk and the lifting disk with different raising angles clamp the yarn part of the full bobbin. When the doffing trolley advances, axial component force and radial component force are generated on the bobbins. The axial component force fulfills the functional requirements of pre-loosening and unplugging the full bobbin, and completes the automatic doffing work. [0003] The disadvantage is: due to the large wedging force between the full bobbin and the spindle bar, the radial component force applied to the full bobbin is greater than the radial component force applied to the full bobbin during manual doffing, which will affect the Sp...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage is: due to the large wedging force between the full bobbin and the spindle bar, the radial component force applied to the full bobbin is greater than the radial component force applied to the full bobbin during manual doffing, which will affect the Accuracy of spindle bearings

Because the yarn part of the full bobbin is clamped, the quality index of the clamped part yarn will be destroyed

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