Shedding mechanism for jacquard machine

Abstract

The invention discloses a shedding mechanism for a jacquard machine, and belongs to the field of textile machinery. The shedding mechanism comprises a stander, a main shaft, a first knife lifting plate lifting device and a second knife lifting plate lifting device, wherein a pair of wall boards is fixed on the stander; the main shaft is fixedly provided with a pair of main shaft transmission wheels; the first knife lifting plate lifting device is arranged on the outer side of the pair of wall boards; the second knife lifting plate lifting device is arranged on the inner side of the pair of wall boards; the shedding mechanism is characterized in that: the first knife lifting plate lifting device comprises a first gear, a second gear, a first gear seat, a second gear seat, a first connecting rod, a second connecting rod and a first knife lifting arm; the first gear seat is provided with a first eccentric shaft and a second eccentric shaft; the second gear seat is provided with a third eccentric shaft and a fourth eccentric shaft; the first gear is engaged with the main shaft transmission wheels; the second gear is engaged with the first gear; the upper end of the first connecting rod is connected with the first eccentric shat, and the lower end of the first connecting rod is connected with one end of the first knife lifting arm; the upper end of the second connecting rod is connected with the third eccentric shaft, and the lower end of the second connecting rod is connected with the other end of the first knife lifting arm; and a second knife lifting plate device comprises a third connecting rod, a fourth connecting rod and a second knife lifting arm. Through the shedding mechanism, the transmission effect is guaranteed, the use cost is saved and the examination and maintenance workload is reduced.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and in particular relates to an opening mechanism of a jacquard machine. Background technique [0002] The jacquard machine is widely used in the textile industry. Through the combination of multiple sets of mechanisms and a series of transmission relationships, the two sets of lifting knives are driven to move up and down alternately, and cooperate with the needle selection mechanism and heddle of the jacquard machine to control the opening of each warp thread. Jacquard fabrics with desired patterns can be woven on the loom. [0003] Jacquard shedding devices in the prior art are roughly divided into two categories, the first category mainly has the following three structural forms: the one is a conjugated cam structure; the other is a single-link structure; Among these three structures, the first structure, that is, the conjugated cam has certain advantages, and it is widely seen in ...

AI Technical Summary

Problems solved by technology

However, there are still the following shortcomings: First, due to the use of chain transmission, the load is relatively large, and the chain will elongate due to the passage of time, affecting the transmission effect; second, it is not enough to reflect the simplicity of the structure. In addition to the chain, it is also equipped with tensioner wheels, etc.; third, it is troublesome to maintain and replace, because the wear resistance of the chain is poor, and it needs to be adjusted or replaced regularly or irregularly.

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