Spindle pivot drafting device for spinning frame

Abstract

The invention discloses a spindle pivot drafting device for a spinning frame. The device comprises a draft preparation area and a draft area arranged in turn in the direction of yarn movement; a firstroller and a second roller are arranged between the draft preparation area and the draft area, the first roller and the second roller are paired, and the first roller is driven to rotate by a power source; the draft preparation area is provided with a third roller, a fourth roller and a rotary drum, and the third roller and the fourth roller are paired; the rotary drum is driven to rotate by thepower source, and the rotary drum, the first roller, the second roller, the third roller and the fourth roller are cooperated to send yarns and conduct twisting, so that the yarns sent by the first roller and the second roller into the draft area have a target twist. According to the spindle pivot drafting device for the spinning frame, the draft preparation area is added, the yarns are physicallyisolated, by pre-twisting the yarns which need to be drafted, the adverse effect of uneven yarn twist distribution caused by the lag of twist transfer on the drafting is effectively reduced, the quality of the yarns is improved, and the spinnability is expanded.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and in particular relates to a spinning frame spindle point drafting device. Background technique [0002] Both the frame spinning frame and the mule spinning frame belong to spindle tip twisting. The coarse sand sent from the upper and lower rollers is stretched while twisting, until the drafting and twisting are completed, and then wound onto the bobbin. One of them An important process requirement is: the right real-time twist is the prerequisite for high-quality drafting. Such as figure 1 Shown is the spindle tip drafting device of the current spinning frame. The yarn is twisted and drawn into the spindle after the upper and lower rollers. The transmission of the twist takes time and is lagging behind, which leads to the twist of the yarn from the spindle tip to the root of the roller. It is gradually reduced, especially the yarn just sent out from the root of the roller has almos...

AI Technical Summary

Problems solved by technology

like figure 1 Shown is the spindle tip drafting device of the current spinning frame. The yarn is twisted and drawn into the spindle after the upper and lower rollers. The transmission of the twist takes time and is lagging behind, which leads to the twist of the yarn from the spindle tip to the root of the roller. It is gradually reduced, especially the yarn just sent out from the root of the roller has almost no twist, and it is easy to be drawn into details during the drafting process. In severe cases, the yarn will be broken, affecting the quality of the yarn, and the yarn with poor twist transmission ( Such as full wool yarn, rabbit hair yarn, etc.) have to reduce the speed of the vehicle and the speed of the yarn feeding, which affects the efficiency

Images