Side suction thread shearing device of industrial sewing machine

Abstract

The invention relates to a side suction thread shearing device of an industrial sewing machine. The side suction thread shearing device is characterized by comprising a side suction device body, a supporting plate, a thread residue suction pipe, an oil suction pipe, a movable cutter, a fixed cutter, a control lever, a triangular fixed block and a semicircular fixed block, wherein the oil suction pipe and the thread residue suction pipe are fixedly connected to form a whole structure; the whole side suction device body is formed by fixedly connecting the thread residue suction pipe, the oil suction pipe and the supporting plate; the fixed cutter is fixedly connected with the supporting plate; a movable cutter connection rod mechanism is formed by fixedly connecting the movable cutter and the control lever; the control lever is in sliding connection with a shaft sleeve; and the shaft sleeve is connected with a bracket. Compared with the prior art, the side suction thread shearing device has the advantages of high thread shearing precision, simplicity and convenience for operation, simple structure and the like. By virtue of the device, the problems that the working is not continuous due to a firing pin phenomenon and the production efficiency is influenced and the like are avoided.

Description

technical field [0001] The invention belongs to an auxiliary device for an industrial sewing machine, in particular to a side suction thread trimmer for an industrial sewing machine. Background technique [0002] At present, the automatic thread trimming device of industrial sewing machines usually cuts the thread through the cooperation of the moving knife and the fixed knife. In other words, the moving knife is driven by the lower shaft. In this structure, because the speed of the lower shaft is different from that of the upper shaft, a forced reset mechanism is set for adjustment, but there is still a certain probability of the pin hitting phenomenon. The cost also increases the noise. In order to improve factory production efficiency, reduce the workload of workers, and ensure the continuity of the process, most industrial sewing machines are equipped with automatic thread trimmers to save labor, electricity, and labor. [0003] Patent application number 201210204131.2...

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Problems solved by technology

[0004] The present invention aims to overcome the deficiencies in the prior art, and provides a side suction thread trimming device for industrial sewing machines, which solves the problems in the prior art, such as incoherent work and affecting production efficiency, caused by the phenomenon of pin strikes.

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