A kind of method of automatic threading of roving frame

Abstract

The invention discloses an automatic end generating method of a bobbiner. A keel motor and a roller motor respectively control a lower keel platform and a roller to maintain the static state, a flyer motor and a tube pipe motor respectively drive a flyer and a tube pipe to rotate, the operation direction is opposite to the normal yarn spinning direction, the keel motor and the roller respectively drive the lower keel platform and the roller to operate according to the set spinning operation direction and speed, the flyer motor and the tube pipe motor respectively drive the flyer and the tube pipe to operate according to the set spinning speed, the operation direction is regulated to be identical to the normal spinning direction, and equipment enters the normal spinning state. According to the method, firstly, through the reverse rotation of the flyer and the tube pipe, yarn heads are bonded onto a velvet strip of the tube pipe, and then directly enter the normal spinning stage. Compared with the prior art, the automatic end generating method has the advantages that the step that the roller and the keel platform keep still, and the flyer and the tube pipe stop after rotating for a period time according to the normal operation direction is omitted, the condition of unexpected traction due to yarn end dragging is avoided, the end generating time is shortened, meanwhile, the normal twist degree of yarns is ensured, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of textile machinery, in particular to a roving frame. Background technique [0002] In the textile industry, when the roving frame is spinning normally, it needs to be stopped for doffing after the yarn is full. The full bobbin is removed and the empty bobbin is put on. After the bobbin is raised to the threading position, the yarn ends are manually attached to the flocking part of each bobbin one by one, and finally the machine is turned on for spinning. At present, the number of spindles in a single roving frame generally exceeds 120, and the number of spindles is large. This method is labor intensive and time-consuming, which is not conducive to improving production efficiency. [0003] Another method of threading is automatic threading, that is, after the full bobbin is removed and the empty bobbin is put on, the duck's foot is pushed aside by a mechanical device, and then the dragon tendon is raised, and the bo...

AI Technical Summary

Problems solved by technology

This method improves the success rate of spinning to a certain extent, but the action is cumbersome. When the rollers and the dragon rib platform are not moving, the forward rotation and reverse rotation of the flyer are not part of the normal spinning time, which affects the production efficiency.

Moreover, when the flyer and the bobbin rotate at the normal operating speed in the second step, the linear speed of the bobbin is slightly higher than that of the flyer, but the roller and the dragon rib platform do not move. With the time of dragging the sliver yarn end, it is easy to accidentally draft, and at the same time, the twist of the yarn will become larger, which is not conducive to the production of the next process and wastes raw materials

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