Automatic doffing device for rotary spindle pre-loosening ring spinning

Abstract

The invention discloses an automatic doffing device for rotary spindle pre-loosening ring spinning, and belongs to the technical field of ring spinning doffing equipment.The device comprises a frame, a base, a motor, two transmission mechanisms, multiple guiding wheels, auxiliary wheels, a walking mechanism, a doffing mechanism and a pre-loosening mechanism.According to the device, the pre-loosening and doffing functions of an automatic doffer for ring spinning are comprehensively achieved through the motor, the walking mechanism, the doffing mechanism and the pre-loosening mechanism; the frame automatically and continuously moves on a spinning frame through the motor; precise positioning walking of the frame relative to the spinning frame is achieved through the walking mechanism; the effect that before being upwards pulled out by a bobbin grasping manipulator, a full bobbin rotates relative to a spindle blade to be disengaged is achieved through cooperation of the doffing mechanism and the pre-loosening mechanism, the pre-loosening effect is good, the resistance generated when the bobbin grasping manipulator pulls yarn is decreased, the yarn pulling success rate is increased, doffing is easy, and the yarn pulling power dissipation is reduced.When the device is used, an existing spinning frame for ring spinning does not need to be transformed, and the device is simple and reliable in structure, high in working efficiency and low in manufacture and maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of ring spinning doffing equipment, and in particular relates to the structural design of a rotary spindle pre-loosening ring spinning automatic doffing device. Background technique [0002] Ring spinning is a very important and widespread spinning technology. In the process of ring spinning, it is necessary to remove the spun bobbin (called full bobbin or bobbin) from the spindle of the spinning machine, which is called doffing. At present, the doffing methods of ring spinning frame are divided into two categories, one is manual doffing - the bobbin is pulled out from the spindle bar by hand and put into the yarn basket, and the empty space without yarn The yarn bobbins are placed on the spindle bar; the other type is machine doffing, where the bobbins are removed one by one or in small batches with a doffer, and the empty bobbin is placed on the spindle bar with a tube insertion device, and some spun yarn...

AI Technical Summary

Problems solved by technology

Its disadvantage is that: 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

Its shortcomings are: 1) Due to the existence of bobbin processing errors and the different degrees of wear and tear, the positions of hundreds of full bobbins in the height direction have great fluctuations relative to the dragon tendon reference plane, and the height is uneven. , it is difficult to be uniform, so the pre-loosening block cannot stably contact the lower end of the full bobbin, resulting in large fluctuations in the effect of pre-loosening, and some simply fail to achieve the purpose of pre-loosening; Large, this way of using the pre-loosening block to jack up the full bobbin to achieve pre-loosening requires a lot of force, high energy consumption, and a large reaction force at the same time, resulting in vibration and noise, which affects the overall stability of the doffing device 3) This method needs to install a flat cam with a total length of tens of meters on the spinning frame, which is costly and time-consuming to install

Images