Buttonholing machine

Abstract

The invention discloses a buttonholing machine which comprises a machine body. The machine body is provided with a frame needle, a hole cutter and a thread hooking needle which are driven by a transmission mechanism driven by a two-phase motor, the machine body is fixedly installed on a machine platform, and a detachable thread trimmer is arranged on the front side of the machine platform. According to the buttonholing machine, the thread trimmer replaces an existing mechanical transmission up-down thread trimmer at a buttonhole, friction of mechanical transmission of existing equipment is greatly reduced, a three-phase motor is changed to be the two-phase motor which can also drive a sewing machine, the electric energy is greatly saved, the thread trimmer is detachably arranged on the front side of the machine platform, the thread trimmer can be picked and placed conveniently, the phenomena, caused by leaving the thread trimmer about, of losing and being difficult to find are avoided, the structure of the buttonholing machine is simplified, maintenance is more convenient, the maintenance cost is lower, the problems that in the prior art, due to the fact that he thread trimmer is installed, the structure is complex, the frictional force is large, much energy is consumed, maintenance is inconvenient, and the maintenance cost is high are effectively solved, and the buttonholing machine has the advantages of being simple in structure, convenient to operate, use, assemble and disassemble and low in price.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, and relates to a buttonhole machine. Background technique [0002] During the buttonhole process, the buttonhole machine drives the crank connecting rod, transmission shaft needle, crochet needle and feeding mechanism through the three-phase motor to sew and perform big eyes. After the sewing is completed, the thread is cut off. The existing buttonhole machine is driven by the transmission The connecting rod, the connecting rod drives the scissors on the upper surface of the keyhole sewing place to cut, because the long-term use of the transmission mechanism will cause wear or corrosion, and the friction force needs to be overcome when the double scissors cut, which greatly increases the friction force And transmission energy consumption, its transmission structure is also relatively complex, maintenance is very inconvenient, maintenance costs are high, greatly increasing production costs...

AI Technical Summary

Problems solved by technology

[0002] During the buttonhole process, the buttonhole machine drives the crank connecting rod, transmission shaft needle, crochet needle and feeding mechanism through the three-phase motor to sew and perform big eyes. After the sewing is completed, the thread is cut off. The existing buttonhole machine is driven by the transmission The connecting rod, the connecting rod drives the scissors on the upper surface of the keyhole sewing place to cut, because the long-term use of the transmission mechanism will cause wear or corrosion, and the friction force needs to be overcome when the double scissors cut, which greatly increases the friction force And the energy consumption of transmission, its transmission structure is also relatively complicated, maintenance is very inconvenient, maintenance cost is high, greatly increased production cost, and maintenance cycle is long, also affects production efficiency

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