Quick drag hook reset mechanism of dobby shedding device

Abstract

A quick drag hook reset mechanism of a dobby shedding device belongs to the technical field of textile machinery. Each of an upper drag hook forced-contract mechanism and a lower drag hook forced-contract mechanism comprises a forced-contract rod, a swing arm, a rotating support rod and a supporting seat, the rotating support rods penetrate through shaft holes in the supporting seats to be mounted and supported by the supporting seats, certain ends of the swing arms are fixedly connected with the rotating support rods, the swing arms are driven by the rotating of the rotating support rods to swing by taking the rotating support rods as centers, the forced-contract rods are fixedly arranged at the other ends of the swing arms; moreover, the forced-contract rod of the upper drag hook forced-contract mechanism and the forced-contract rod of the lower drag hook forced-contract mechanism are respectively located above an upper drag hook and a lower drag hook, through the swing of the swing arms to support and drive the forced-contract rods to lift, the hook face peak-valley angles of two pieces of cams in a cam driving mechanism are misaligned, so as to realize the unsynchronized lift of the forced-contract rod of the upper drag hook forced-contract mechanism and the forced-contract rod of the lower drag hook forced-contract mechanism. The mechanism provided by the invention can solve the problems that the falling speed of an upper drag hook and a lower drag hook in an existing negative dobby shedding device cannot meet the high-speed knitting of a weaving machine, and parts are easy to wear.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and in particular relates to a fast reset mechanism of a drag hook of a multi-arm shedding device. Background technique [0002] The negative dobby shedding device is an executive device that drives the heald frame to complete the shedding movement during the loom manufacturing process. The passive multi-arm opening device includes a pair of wall panels corresponding to each other, each set of upper hooks and lower hooks that are equal in number to each other and located between the wall panels, and a pair of upper hooks corresponding to a set of upper hooks that are used to pull the upper hooks. The upper broach, a lower broach corresponding to a set of pull-down hooks for pulling the pull-down hooks, a set of long vertical needles that are equal in number to the upper pull-hooks and connected to the upper pull-hooks in a cantilevered state, a set of The number of pull-down hooks is e...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the falling speed of the upper and lower hooks in the existing passive dobby shedding device cannot meet the high-speed weaving of the loom and the problems that the parts are easy to wear, and provide a method that can improve the falling speed of the upper and lower hooks to meet the Quick reset mechanism of hook for dobby shedding device required for high-speed weaving of loom

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