Six-linkage shedding mechanism for driving six heald frames

Abstract

The invention discloses a six-linkage shedding mechanism for driving six heald frames. The six-linkage shedding mechanism consists of a crankshaft and six sets of six-linkage mechanisms with the same structure, wherein six crank throws are arranged on the crankshaft, and the phases of the six crank throws are the same or are different by 180 degrees; cranks of the six-linkage mechanisms are connected with the six crank throws in one-to-one correspondence, the six-linkage mechanisms are driven by the crankshaft, and each heald frame is driven by the corresponding six-linkage mechanism through a middle rod and a push rod assembly. According to the six-linkage shedding mechanism, a traditional cam mechanism is replaced by virtue of the six-linkage mechanisms, the six heald frames can be simultaneously driven by the six-linkage mechanisms, and by virtue of the different phases of the six crank throws, multiple twill fabrics can be woven. A hinged linkage mechanism has the advantages that the structure is simple, the stress on a revolute pair is smaller than that on a lower pair and the revolute pair is smoothly stressed and slightly impacted, and the hinged linkage mechanism is particularly suitable for modern high speed looms, so that plain and twill fabrics can be perfectly woven by the six heald frames, and the impact and abrasion caused by the vibration of a loom to all parts on the shedding mechanism can be reduced.

Description

technical field [0001] The invention belongs to the field of air-jet looms, and relates to a shedding mechanism on an air-jet loom, in particular to a six-link shedding mechanism for driving six-leaf heald frames. [0002] Background technique [0003] The function of the shedding mechanism is to drive the warp yarns in sequence according to the changes in the fabric structure. The warp yarns are divided into upper and lower layers, and a shed is formed between the upper and lower layers. The shed is the weft yarn channel. When the shed is formed, the weft yarn flies over Shed. To form upper and lower layers of warp yarns, the heald frames need to be arranged side by side. Several pages of heald frames are drawn by heddles to form the upper layer of warp yarns, and the other pages of heald frames are drawn by heddles to form the lower layer of warp yarns. Therefore, each page of heald frames moves phases are not the same. [0004] The shedding mechanism drives the two-lea...

AI Technical Summary

Problems solved by technology

Moreover, it is difficult to realize two-stage pauses at the highest and lowest positions of the shed with a linkage mechanism, and only approximate pauses can be achieved.

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