Shedding mechanism for air jet loom

Abstract

The invention relates to a shedding mechanism for an air jet loom. The mechanism comprises a left crank, a left connecting rod, a right crank, a right connecting rod, an oscillating bar and a sliding block arranged on the oscillating bar, wherein the left crank is provided with the A end and the B end, the A end is hinged on a machine frame, and the B end is hinged with one end of the left connecting rod; the right crank is provided with the C end and the D end, the C end is hinged on the machine frame, the D end is hinged with one end of the right connecting rod, the other end of the left connecting rod and the right connecting rod is correspondingly hinged with both ends of the oscillating bar respectively; a straight line passing the A end of the left crank and the C end of the right crank is defined as the X axis, the central point of a connecting line of the A end and the B end is defined as the base point O, and a straight lien passing the O point and vertical to the X axis is defined as the Y axis; and when the left and the right cranks rotate, the sliding block slides along the direction of the Y axis. Two sets of crank connecting rod mechanisms jointly drive the oscillating bar, and the relationship of the geometrical dimensions of all rods is controlled to ensure that the shedding mechanism keeps low oscillation while carrying out the shedding motion.

Description

technical field [0001] The invention relates to an opening mechanism applied to an air-jet loom. Background technique [0002] The air-jet loom uses the shedding mechanism to perform the shedding movement of the warp yarn, and the shedding mechanism completes the alternate lifting of the upper and lower warp yarns. In the past, cam opening mechanisms and link opening mechanisms were used on looms, and these mechanisms had large vibrations and a large force on the constituting rods. In the past, the speed of the loom was usually only 100-200 rpm, but the speed of the current air-jet loom reaches 900-1000 rpm. The existing low-speed opening mechanism only completes the movement, and it will produce a lot of noise when running at high speed. Force, cause the vibration of rod member to be big, cause the fracture of warp thread, so existing shedding mechanism can't meet the needs of present air-jet loom. Contents of the invention [0003] The object of the present invention i...

AI Technical Summary

Problems solved by technology

In the past, the speed of the loom was usually only 100-200 rpm, but the speed of the current air-jet loom reaches 900-1000 rpm. The existing low-speed opening mechanism only completes the movement, and it will produce a lot of noise when running at high speed. Force, resulting in large vibration of the bar, resulting in the breakage of the warp, so the existing shedding mechanism can no longer meet the needs of the current air-jet loom

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