Tube drawing device of spinning doffer

Abstract

The invention relates to a tube drawing device of a spinning doffer. The tube drawing device comprises a tube drawing frame assembly, a tube drawing power transmission assembly and a mechanical arm grabbing and interlocking force eliminating assembly. The tube drawing device has the advantages that the whole tube drawing process adopts a pure mechanical mode, each working node is reliable in operation action, accurate in beat, small in size and lightweight, and transformation of an existing spinning frame structure is not needed; the tube drawing device is small in power load, fast tube drawing using a single motor or using manual trolley pushing without a motor can be performed, and damage-free doffing of bobbins and spindles can be achieved.

Description

technical field [0001] The invention relates to a textile ring spinning doffing device, in particular to a tube pulling device for a worsted spinning doffer. 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 from the spindle of the spinning machine, which is called doffing. In the traditional manual doffing, the yarn bobbin is pulled out from the spindle bar by hand and put into the basket, and the empty bobbin without yarn is put into the spindle bar. Low; at present, machine doffing is used, and the bobbins are removed one by one or in small batches by the doffing machine, and the empty bobbin is placed on the spindle rod by the insertion device, but it cannot solve the problem of the fitting force between the spindle rod and the bobbin question. Some stand-alone doffing machines have fitting force elimination devices, but the method damages the s...

AI Technical Summary

Problems solved by technology

In the traditional manual doffing, the yarn bobbin is pulled out from the spindle bar by hand and put into the basket, and the empty bobbin without yarn is put into the spindle bar. Low; at present, machine doffing is used, and the bobbins are removed one by one or in small batches by the doffing machine, and the empty bobbin is placed on the spindle rod by the insertion device, but it cannot solve the problem of the fitting force between the spindle rod and the bobbin question

Some stand-alone doffing machines have fitting force elimination devices, but the method damages the spindle bar, and is prone to failure or malfunction; some collective doffing devices that come with spinning frames solve the problem of fitting force, first by vibration, second It is to replace the original polished spindle rod with the aluminum spindle rod with balls, which costs a lot. It is difficult to adapt to the collective doffing of the traditional spinning frame without replacing the aluminum spindle rod.

[0003] The existing patent No. 201610202934.2 is a vertical-axis ring spinning automatic doffing device, which uses a friction bump with compensation error to contact and rub against the spindle rod, which drives the spindle rod to rotate and disengage the bobbin, so that the bobbin can be pulled out, but the friction control It is always incapable of precise control, and there is a hidden danger that insufficient friction force cannot drive the spindle bar to rotate and disengage the bobbin, which affects continuous working efficiency. At the same time, after long-term frictional use, the friction bump and the spindle bar are worn, which also affects the rotation drive and cannot be stably controlled. Disengagement of the bobbin from the spindle

There is also a combined automatic doffing trolley with a patent number of 201420810740.7, which uses a driving device for inserting empty bobbins to insert empty bobbins on the bobbins after extruding, and uses multiple detection sensors to cooperate with the driving mechanism of the conveying screw to quantitatively transport the empty bobbins. Into the empty bobbin channel, the screw rotates to deliver the bobbin to the bobbin channel, and finally the empty bobbin is moved by the spindle rod through the inclined insertion channel of the empty bobbin, and inserted into the spindle rod by its own weight in the way of inclined insertion tube, The oblique insertion of the hole bobbin into the spindle bar has the defects that it cannot be effectively inserted vertically, the insertion is not complete, and the fitting spindle bar cannot be fixed.

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