A cutter structure of a sewing machine

Abstract

The invention provides a cutter structure of a sewing machine and belongs to the technical field of sewing equipment. The technical problem is solved that a cutter of an existing sewing machine is easily abraded. The sewing machine comprises a rack, a curved needle rack and a curved needle arranged on the curved needle rack, the cutter structure comprises a fixed cutter base, a fixed cutter fixedto the fixed cutter base, a movable cutter rack, a movable cutter fixedly arranged on the movable cutter rack and a movable cutter shaft, the movable cutter rack is connected to one end of the movablecutter shaft, and the movable cutter and the fixed cutter can form shearing motion when the movable cutter shaft drives the movable cutter rack to swing; a rotation spanner is arranged on the rack, alifting rod which can drive the rotation spanner to rotate is connected to the curved needle rack, a crank is fixedly arranged on the movable cutter shaft, a guide block is arranged at one side of the crank, and an inclined guide surface is arranged at one side of the guide block; the rotation spanner is provided with a driving rod, and the end of the driving rod can abut against the guide surface. According to the cutter structure, the movable cutter and the fixed cutter can be separated in a non-cutting state, abrasion is reduced, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of garment manufacturing equipment, and relates to an interlock sewing machine, in particular to a sewing machine cutter structure. Background technique [0002] A sewing machine is a machine that sews sewing materials by sutures, including a needle bar mechanism, a thread take-up mechanism, a feeding mechanism, a thread hook mechanism, a pressing mechanism, a winding device, and a lubricating device. With the continuous development of sewing machines, the degree of automation of sewing machines is getting higher and higher. The existing sewing machine is provided with a cutter structure for automatic cutting of the sewing material entering the sewing machine, so as to improve the degree of automation of the sewing machine. [0003] Chinese patent (notification number: CN206070133U, publication date: 2017-04-05) discloses a cutter mechanism of a sewing machine, which is arranged on the head of the sewing ma...

AI Technical Summary

Problems solved by technology

[0004] The movable knife and the fixed knife of the cutter structure in the above-mentioned patent documents are prone to interference, and the friction between the two is relatively frequent, which makes the blade extremely easy to wear during the cutting process, and even the blade cracks, which seriously affects the service life of the cutter structure.

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