Lifting knife transmission mechanism of jacquard

Abstract

The invention discloses a lifting knife transmission mechanism of a jacquard, and belongs to the technical field of jacquard shed machinery. The lifting knife transmission mechanism of the jacquard comprises an input shaft, a long shaft, at least one eccentric connecting rod mechanism, two pairs of suspensor supports and two lifting knife groups, wherein the input shaft rotatablely penetrates a left wallboard and a right wallboard; the long shaft is arranged parallel to the input shaft; and the two lifting knife groups are arranged in a suspending mode below the two pairs of suspensor supports through a plurality of suspensors. Up-and-down reciprocating motion of the two lifting knife groups are controlled by the input shaft and the eccentric connecting rod mechanism arranged on the input shaft in a transmitting mode, a clump weight is arranged close to a left eccentric wheel on the input shaft, ends of the two pairs of suspensor supports are movably connected with short core shafts fixed on the left and right wallboards respectively, a pair of rod device is arranged on the long shaft, wherein one rod device is movably connected with eccentric wheels through a connecting rod, and the pair of rod device is provided with two opposite lifting arms which are movably connected with two opposite ends of a corresponding pair of suspensor supports through two lifting rods. According to the technical scheme, the eccentric connecting rod has a light push-and-pull, the jacquard with the lifting knife transmission mechanism is small in power consumption, obvious power-saving, good in longitudinal dynamic balance, and stable in operation.

Description

【Technical field】 [0001] The invention relates to a jacquard knives transmission mechanism, which is used to control two groups of jacquard knives to reciprocate in opposite directions, and belongs to the technical field of jacquard shedding machinery. 【Background technique】 [0002] The jacquard machine that controls two pairs of up and down reciprocating boom frames through the transmission of the eccentric wheel linkage mechanism, the movement of the linkage is transmitted to the reverse lifting arm (or swing arm structure), and the lifting rod connected to the reverse lifting arm is connected At both ends of the boom frame, when this type of jacquard machine is working, the push and pull force of the connecting rod needs to be large enough to lift the hanging knife group on the hanging boom frame and the wire and warp applied to the lifting knife group Tension load, due to the small eccentric distance of the eccentric wheel of the eccentric wheel linkage mechanism of the...

AI Technical Summary

Problems solved by technology

[0002] The jacquard machine that controls two pairs of up and down reciprocating boom frames through the transmission of the eccentric wheel linkage mechanism, the movement of the linkage is transmitted to the reverse lifting arm (or swing arm structure), and the lifting rod connected to the reverse lifting arm is connected At both ends of the boom frame, when this type of jacquard machine is working, the push and pull force of the connecting rod needs to be large enough to lift the hanging knife group on the hanging boom frame and the wire and warp applied to the lifting knife group Tension load, due to the small eccentric distance of the eccentric wheel of the eccentric wheel linkage mechanism of the jacquard machine, the eccentric wheel bearing has to bear a relatively large impact force during operation, which further increases the load of the eccentric wheel bearing invisibly, and moreover , in order to meet the needs of shed forming, the reverse lifting arm needs to be designed as a long lifting arm and a short lifting arm. The force is uneven. In addition, the inventor found that the jacquard machine equipped with the lifting knife transmission mechanism usually has poor longitudinal dynamic balance, and the unstable operation causes the jacquard machine to vibrate greatly during the weaving process and the noise exceeds the standard. , On-site installation and commissioning experience, I deeply understand that the longitudinal dynamic balance of the jacquard machine is extremely important, which can directly affect its running stability. The quality of the longitudinal dynamic balance will directly affect the definition of the shed during the weaving process, especially in the high-speed operation It will affect the service life of the moving parts of the whole machine and the improvement of weaving efficiency

Images