Hot cutting device of pattern sewing machine

Abstract

The invention relates to a hot cutting device of a pattern sewing machine. The hot cutting device comprises a needle plate, wherein a hot cutting stationary knife is arranged on the left side of the bottom of the needle plate; two mounting holes are formed in the outer side of the hot cutting stationary knife; an insulation film is arranged on the inner surface of the hot cutting stationary knife;a cable clamp head is fixed at each of the mounting holes; an insulation spacer is arranged at a fixing position of a screw I; two copper wires are connected to the root of the left side of each of the cable clamp heads; the two copper wires tightly push against the cable clamp heads; a transformer is connected to the roots of the two copper wires; the transformer is communicated with a solid state breaker; a moving knife is arranged on the right side of the needle plate; a rotary hole is formed in the middle of the moving knife; an axial screw is fixed by the moving knife in a movable fit manner; a thread trim pull rod shaft is arranged on the plane of the right end of the moving knife; the thread trim pull rod shaft is matched with a thread trim pull rod; a V-shaped thread hook is arranged at the front part of the left end of the moving knife; a thread cutting blade is arranged at the rear part of the V-shaped thread hook; a thread clamping piece is arranged right in front of a needle hole of the needle plate. According to the hot cutting device, the problem that a thread residue is loose after thread trim is solved, the thread breaking rate of thread trim is ensured to be 100%,and the service life of the moving knife and the stationary knife can be prolonged.

Description

[0001] [Technical Field] [0002] The invention belongs to the technical field of sewing equipment, and specifically is a pattern machine hot-cutting device suitable for sewing processes of various garments and footwear in the sewing industry. [0003] [Background technique] [0004] At present, the computer pattern machine used in the sewing industry adopts the cold cutting method to implement the sewing process. This thread trimming structure is set on the back of the needle plate, a fixed knife is fixed on the left side of the needle plate, and the cutting edge of the fixed knife is close to the needle hole; on the right side of the needle plate, there is a movable knife that can be rotated. There is a revolving hole in the middle, which is fixed by an axial screw. A protruding thread trimming rod shaft is provided on the right end of the movable knife and connected to the thread trimming rod. The front left end of the movable knife is provided with a wire hook, and the rear part ...

AI Technical Summary

Problems solved by technology

[0005] This kind of cold cutting thread cutting method has high requirements on the production process of the fixed knife and the moving knife. Due to the long-term frequent thread cutting, the edges of the fixed knife and the moving knife are easy to wear, and sometimes there will be a phenomenon of continuous cutting and broken wires. Secondary repair or replacement of knives and moving knives, especially for sewing medium-thick materials and thick threads

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