Vertical shaft type ring spinning automatic yarn falling device

Abstract

The invention discloses a vertical shaft type ring spinning automatic yarn falling device, and belongs to the technical field of ring spinning yarn falling devices. The device comprises a frame, a base, a motor, a traveling mechanism, a positioning mechanism, a pre-loosening mechanism, a yarn falling transmission mechanism and a manipulator. By the matching between the positioning mechanism and the yarn falling transmission mechanism, the manipulator can be positioned relative to a caught bobbin when the frame moves forwards; and by the matching between the yarn falling transmission mechanism and the manipulator, horizontal revolving and vertical motion of the manipulator and a function of opening and closing the manipulator are realized, so that the aim of vertically pulling out the bobbin from a spindle blade is comprehensively fulfilled. The device adopts a yarn falling mode that the tops of yarns are in contact with the bobbin, so that the yarns cannot be damaged; the bobbin can be continuously pulled out, and the yarn falling efficiency is high; by the matching between the yarn falling transmission mechanism and the pre-loosening mechanism, before the manipulator upwards pulls out the bobbin, the bobbin and the spindle blade relatively rotate to realize loosening, so that the pre-loosening effect is good; complicated sensing control is not needed, the volume is small, and the weight is light; and when the vertical shaft type ring spinning automatic yarn falling device is used, the existing ring spinning machine does not need to be improved.

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 vertical-axis 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 yarns The machine ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1) The space curve of the drum-shaped cam is relatively complex, including 6 main straight lines or curve segments, and the processing cost is high; especially the drum-shaped cam includes 2 straight lines in the shape of an acute "V" section, causing the manipulator claw to drop and rise rapidly when passing through these two sections, the movement is not stable, and there is a large impact, which makes the machine vibrate and accelerates the friction and wear of the doffing parts; 2) the lower end of the manipulator claw is conical , the upper end is cylindrical. On the one hand, the bobbin stretches the manipulator claws when grasping, and long-term use will damage the bobbin; Successful extraction reduces doffing success rate

Its disadvantages are: in order to obtain a larger single-tube gripping force, the main components of the pneumatic collective doffing and holding device used in the device have serious friction and wear, and need to be replaced frequently, resulting in high maintenance costs; At the same time, the doffing parts need to travel in the opposite direction at a constant speed. Servo motors and more precise sensing and control systems are used, and the cost of the whole machine is high; pneumatic conveying pipes, valves and compressed air sources are required, which are large in size and high in energy consumption. In addition, compression The air has the problem of response delay and loud noise

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