Spatial crank rocker weft insertion device for rapier loom

Abstract

The invention involves a space crank rocker weft insertion device used for gripper loom, it includes: spindle (1), axle gear (10) and the gripper-transmitting wheel(12), the axle gear and the gripper-transmitting wheel are coaxial, the spindle is connected with a crank rocker device, the crank rocker device includes crank (2), cradle (3), pendular body (8) and fan gear (9), the crank is fixed with the spindle, axle end of cradle is connected with the crank through rolling bearing (4) and slide blocks (5), two axle ends of pendular body is connected with cradle through rolling bearing (7), the pendular body is fixed and equipped with fan gear, the fan gear is engaged with the axle gear directly, or the fan gear first is engaged with gear pair (11), then the gear pair is engaged with axle gear, the central axial trace (AA') of spindle, the rotary axial trace (EE') of cradle, the central axial trace (CC') of pendular body and the swinging centre of fan gear are intersected at same crossing point (O) in space, a included angle ( alpha ) which is bigger than zero degree is left between said rotary axial trace (EE') of cradle and central axle of spindle. The invention can adjust the stroke of gripper belt conveniently, the structure is simple and compact, and the movement is stable and reliable.

Description

technical field [0001] The invention relates to a rapier loom, in particular to a space crank rocker weft insertion mechanism for the rapier loom. It belongs to the technical field of looms of textile machinery. Background technique [0002] In the prior art, the weft insertion process of the rapier loom consists of two rapier heads that move relatively reciprocatingly along the reed width direction of the loom, and start to move from the two sides of the loom to the center of the shed of the loom. Weft yarn, and then back to the starting position on both sides, thus completing a weft insertion. Among them, the sword head is driven by the sword belt, and the sword belt is driven by the teeth on the sword transmission wheel meshing with the perforations on the sword belt, or the end of the smooth sword belt is fixed on the sword transmission wheel and driven by the sword transmission wheel. The key to the weft insertion mechanism of the rapier loom is that the uniform rotat...

AI Technical Summary

Problems solved by technology

Among them, the size of the first three weft insertion mechanisms is too large, there are many transmission links, the number of parts is large, the manufacturing cost is high, and the installation and debugging are difficult; and in the weft insertion mechanism combined with the helical rotary pair and the connecting rod, the manufacturing precision of the variable pitch screw is high. , the material requirements are also high, and the process is difficult, which makes the manufacturing cost high

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