Rapier loom noncircular gear planetary gear train weft insertion mechanism

Abstract

The invention discloses a rapier loom noncircular gear planetary gear train weft insertion mechanism. The invention is characterized in that planetary carriers are driven by a main shaft of the loom; a drive noncircular sun gear is moveably sleeved on a driven noncircular sun gear shaft, and the drive noncircular sun gear is fixed and can not move; planetary shafts are driven by the planetary carrier; two noncircular gears are fixedly connected on the planetary shafts, one of noncircular gears is engaged with the drive noncircular sun gear, and the other is engaged with the driven noncircular sun gear; and the driven noncircular sun gear outputs motive power, and then the movement and the motive power of the main shaft of the loom are transferred to a rapier gripper by cylindrical gear drive, bevel gear drive and engagement of a rapier wheel and a rapier tape. A noncircular gear planetary train, the cylindrical gear and a bevel gear mechanism are used to transform uniform rotation of the main shaft of the loom to non-uniform reciprocating movement of the rapier gripper. Optimizing the drive ratio function of the noncircular gear can lead an acceleration rule of the rapier gripper to be an isosceles trapezoid to reduce tension of weft. Relay weft insertion can be achieved through different initial phase angles of the planetary carriers in weft insertion mechanisms symmetrically arranged at the left side and the right side of the rapier loom.

Description

technical field [0001] The invention relates to a weft insertion mechanism of a loom, in particular to a non-circular gear planetary wheel train weft insertion mechanism of a rapier loom. Background technique [0002] The function of the weft insertion mechanism is to convert the uniform rotational motion of the main shaft of the loom into the non-uniform and regular linear reciprocating motion of the sword head. At present, the weft insertion mechanisms of rapier looms sold in the domestic market mainly include: conjugate cam weft insertion mechanisms. The error will produce impact, but it cannot work at high speed; the variable pitch screw drive weft insertion mechanism, the variable pitch screw pair of this type of mechanism is difficult to process; the plane six-link weft feeding and four-link weft receiving mechanism can easily realize "relay" insertion. Weft, but the design flexibility of the weft insertion movement law is not as good as that of the conjugate cam weft...

AI Technical Summary

Problems solved by technology

At present, the weft insertion mechanisms of rapier looms sold in the domestic market mainly include: conjugate cam weft insertion mechanisms. The error will produce impact, but it cannot work at high speed; the variable pitch screw drive weft insertion mechanism, the variable pitch screw pair of this type of mechanism is difficult to process; the plane six-link weft feeding and four-link weft receiving mechanism can easily realize "relay" insertion. Weft, but the design flexibility of its weft insertion motion law is not as good as that of the conjugate cam weft insertion mechanism; the spatial four-link weft insertion mechanism, its weft insertion motion law design flexibility is not as good as the plane six-link weft sending and four-link weft receiving mechanisms

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