Thread trimming mechanism for two-needle sewing machine

Abstract

The invention provides a thread trimming mechanism for a two-needle sewing machine, and belongs to the technical field of sewing machine equipment. The problem that it is difficult for the current sewing machine to trim two stitches simultaneously is solved. The thread trimming mechanism for the two-needle sewing machine comprises two hook tables, the two hook tables are both fixedly connected with fixed blades, and are both rotatably connected with moving blade shafts, the upper end of each moving blade shaft is fixedly connected with a moving blade, the surfaces of the moving blades are attached to and abut against the surfaces of the fixed blades, a driver is arranged in a machine shell, and a connecting rod structure which can drive the two moving blade shafts to conduct reciprocating rotation along the opposite direction in a set angle is arranged between the driver and the two moving blade shafts. According to the thread trimming mechanism for the two-needle sewing machine, the installation and debugging are more convenient, the reliability of the thread trimming is high, a bottom thread and an upper thread can be hooked and trimmed simultaneously at one time, and two stitches can be trimmed simultaneously.

Description

technical field [0001] The invention belongs to the technical field of sewing machine equipment, and relates to a thread trimming mechanism of a double-needle sewing machine. Background technique [0002] Most of the industrial sewing machines are general-purpose sewing machines, including lockstitch sewing machines, chain stitching machines, quilting machines, overlock sewing machines and interlock sewing machines, etc., and lockstitch sewing machines have the highest utilization rate. With the continuous adjustment of the market and consumption structure, medium and low-speed industrial sewing machines can no longer meet the production needs. Sewing machines are developing towards high-speed and serialization. Electronic and computer technologies are widely used in sewing machines. At present, all sewing machines adopt automatic thread trimming technology. In the thread trimming mechanism equipped with double-needle sewing machines, the fixed knife is fixed on the concave ...

AI Technical Summary

Problems solved by technology

[0004] However, due to the need to replace different needle position groups for different garment processes in the usual production process, it is necessary to disassemble and assemble the needle plate and move the hook table when changing the needle position group. As for the cooperation situation, since the viewing angle is blocked by the needle plate, the mutual cooperation between the fixed knife and the movable knife cannot be seen. The cooperation between the fixed knife and the movable knife basically depends on the experience of the assembler or maintenance worker. It is inconvenient to install and debug, and has high requirements for assembly technology. The stability of thread trimming is poor, and the bottom thread or upper thread is often cut continuously, which affects the performance of the whole machine. The production efficiency of garment factories is low, and due to the requirements of garment technology, two sutures are usually sewn at the same time. The above thread trimming mechanism is difficult Complete simultaneous cutting of two sutures

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