Edge-infolding bearded needle rotating mechanism driven by servomotor

Abstract

An edge-infolding bearded needle rotating mechanism driven by a servomotor comprises a box body; the servomotor is fixedly mounted on the box body; the output shaft of the servomotor is connected with a bearded needle extend-retract shaft at least through a pair of gear transmission pairs; the bearded needle extend-retract shaft is hinged to the box body through a bearing; a bearded needle is fixedly connected to one end of the bearded needle extend-retract shaft; the middle part of the bearded needle extend-retract shaft is connected with a cam mechanism axially moving on the bearded needle extend-retract shaft; a transmission gear is fixedly connected to the output shaft of the servomotor; the bearded needle extend-retract shaft is meshed with the transmission gear through a gear fixedly connected to the bearded needle extend-retract shaft; the transmission gear and the gear constitute a gear transmission pair. The edge-infolding bearded needle rotating mechanism has the characteristics of simple structure, reliability and convenience in use, high precision, good high-speed adaptability and the like.

Description

technical field [0001] The invention relates to a turning mechanism of crochet needles driven by a servo motor, belonging to weaving equipment and weaving technology in the field of textile machinery. Background technique [0002] figure 1 , 2 Shown is a schematic diagram of the existing conjugate cam-space link mechanism driving hook rotation mechanism. In the illustration, the conjugate cam 1 is fixedly connected to the camshaft 7 through a key connection, and the swing rod 2 and the box body 8 are hinged through bearings. , rollers B and C in contact with the conjugate cam are installed on it, the conjugate cam 1, the swing rod 2, rollers B, C and the box body 8 form a roller swing follower conjugate cam mechanism; the swing rod 2 One end is hinged with the connecting rod 3 through a spherical bearing to form a spherical pair; the crochet arm 4 and the crochet telescopic shaft 5 are connected with the outer circle of the beveled edge through the edge-cutting hole to for...

AI Technical Summary

Problems solved by technology

[0004] The shortcoming of above-mentioned existing structure is: the transmission line of crochet motion is long, is made up of cam mechanism, space link mechanism, and motion pair is many, and the clearance of motion pair is difficult to control, especially at the position of motion pair F, crochet telescoping shaft and crochet rotating arm There needs to be relative movement in the axial direction, but there can be no relative rotation around the axis. The gap has a great influence on the accuracy of the crochet rotation, the error magnification is large, and the accuracy is difficult to control; resulting in frequent mistakes in the crochet movement of the fold-in side device, and poor high-speed adaptability

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