A Bilaterally Driven Asymmetric Link Slider Opening Mechanism

Abstract

The invention discloses a double-side drive asymmetric connecting rod slide block opening mechanism which comprises a heald frame arranged in a sliding rail, wherein the heald frame is fixed on an opening mechanism frame; a first hinge point and a second hinge point are arranged on the left side and the right side of the bottom end of a lower transverse beam of the heald frame, respectively; a first connecting rod is hinged to the first hinge point; the first connecting rod is hinged with a first crank; the first crank is connected with a first motor on a weft insertion side through a first speed reducer; a second connecting rod is hinged to the second hinge point; the second connecting rod is hinged with a second crank; the second crank is connected with a second motor on a weft catching side through a second speed reducer; a slide block is arranged between the middle of a right side stopper of the heald frame and the sliding rail. Synchronous movement on two sides of the heald frame is realized, a phenomenon that one side of the heald frame moves at first and the other side of the heald frame is lagged is eliminated, and the slide block is arranged on one side of the heald frame and reciprocates on the sliding rail, so that the aim of two sets of driving parts need to be mutually and adaptively coordinated in the process of driving the same heald frame is achieved, and novel degree of freedom and constraint are provided for the movement of the heald frame.

Description

technical field [0001] The invention belongs to the field of air-jet looms, and relates to an opening mechanism on an air-jet loom, in particular to an opening mechanism of a double-side driven asymmetrical link slider. Background technique [0002] The motion completed by the shedding mechanism is a simple reciprocating linear motion, and the working part is the heald frame. The shedding mechanism that generally adopts now is to drive the heald frame with a set of driving parts from the weft catching side, and the heald frame drives the warp yarn to reciprocate up and down under the guidance of the heald frame guide frame. However, it takes time to transfer the movement from the weft catching side to the weft insertion side, and the time difference between the two sides can reach milliseconds. Especially for high-speed wide-width looms, the weft insertion side of the heald frame has been in a state of lagging and catching up. , the movement results in repeated twisting of ...

AI Technical Summary

Problems solved by technology

But in actual production, the weft insertion airflow is tight on the weft insertion side, occupying a small space, while the weft insertion airflow is loose on the weft catching side, occupying a large space, and the shed with the same size is obviously not conducive to the airflow weft insertion process

In addition, the heald frame of the currently used shedding mechanism directly reciprocates on the heald frame guide rail, and driving the heald frame at the same time on both sides is a two-degree-of-freedom mechanism, which requires a seven-bar mechanism. The existing shedding mechanism lacks a rod, which is obviously not suitable for Modern looms do not provide more degrees of freedom and constraints for the movement of the heald frame

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