Knife structure in a placket machine

Abstract

The invention belongs to the technical field of sewing equipment, in particular to a middle knife structure of a placket machine. The structure comprises a connection block and a main shaft, wherein the main shaft is arranged on the connection block, the two ends of the main shaft extend out of the upper end and the lower end of the connection block respectively, one side of the connection block is provided with a guide shaft, the lower end of the guide shaft extends out of the lower end of the connection block, the lower end of the guide shaft is connected with one end of a middle knife fixing frame, the lower end of the main shaft is connected with the middle portion of the middle knife fixing frame, the upper end of the main shaft is provided with an actuator driving the main shaft to move, and the other end of the middle knife fixing frame is provided with a middle knife. According to the structure, single-edge fixing of an original middle knife fixing frame is changed into middle fixing, vibration generated in the vertical moving process is reduced, the middle knife can stably move up and down in the cutting process, cloth cutting quality is improved, loss of the middle knife is reduced, the guide shaft guides the middle knife fixing frame in the vertical moving process, and accordingly the middle knife fixing frame can move up and down more stably.

Description

Technical field: [0001] The invention belongs to the technical field of sewing equipment, in particular to a middle knife structure of a placket machine. Background technique: [0002] At present, the middle knife mechanism of the placket machine (also called the barrel opener) on the market is not stable because one end of the middle knife fixed cantilever 1 is fixed on the main shaft 2, and the other end is suspended in the air. Vibration occurs; during the cloth cutting process, the middle knife 3 and the fixed knife 4 of the table need to maintain a small gap. Due to the shaking of the middle knife 3, the gap will become larger and smaller. If the gap is large, it will affect the cloth cutting effect. A collision occurs, which seriously affects the service life of the middle knife 3. Invention content: [0003] The purpose of the present invention is to provide a middle knife structure of the fly machine which reduces the shaking of the middle knife fixing frame durin...

AI Technical Summary

Problems solved by technology

[0002] At present, the middle knife mechanism of the placket machine (also called the barrel opener) in the market is not stable because one end of the middle knife fixed cantilever 1 is fixed on the main shaft 2, and the other end is suspended in the air. Shaking occurs; during the cloth cutting process, the middle knife 3 and the fixed knife 4 of the table need to maintain a small gap. Due to the shaking of the middle knife 3, the gap will become larger and smaller. If the gap is large, it will affect the cloth cutting effect. When the gap is less than or equal to zero, it will A collision will seriously affect the service life of the middle knife 3

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