A double-thread interlocking overlock sewing method for agricultural straw curtains and an overlock sewing machine needle structure

Abstract

The invention relates to a double-thread interlocking overlock method and a double-thread interlocking overlock machine needle structure for agricultural straw mats and belongs to the technical field of production of agricultural straw mats. According to the technical scheme, a horizontal straw mat needle (1) and a vertical straw mat needle (2) synchronously generate displacement relative to a horizontally arranged straw mat (8); the horizontal straw mat needle is a crochet needle, a notched hook (3) is arranged on the side face of the needle head, and a first straw mat thread (5) is hooked in the notched hook; the horizontal straw mat needle is located on the upper surface of the horizontally arranged straw mat and reciprocates in the horizontal direction; a needle hole (4) is formed in the needle head of the vertical straw mat needle, and a second straw mat thread (6) penetrates through the needle hole; the vertical straw mat needle is arranged below the straw mat and reciprocates vertically by penetrating through the horizontally arranged straw mat. The produced straw mat is interlocked through the double threads and is not loose after being cut off, so that additional processing is not needed, labor intensity is reduced, efficiency is improved, and production cost is reduced; the produced straw mat does not have needle eyes in the surface and is good in warm-keeping and shading effect and attractive in appearance, and the quality of the product is improved.

Description

technical field [0001] The invention relates to a double-thread interlocking overlock sewing method for agricultural straw curtains and an overlock sewing machine needle structure, and belongs to the technical field of agricultural straw curtain production. Background technique [0002] The alias of straw curtain is grass thatch, which is made of rice straw as raw material through a simple straw curtain machine. The straw curtain machine can produce straw curtains with unlimited length and certain width, and the thickness also ranges from 2 cm to 6 cm. The main The purpose is to keep warm in winter in greenhouses and shade in greenhouses. Background Art The straw curtains produced are fastened together by several straw cords in the same length direction as the straw mats. Each straw cord passes through a thread on the upper surface and jumps up and down through a needle to make a The grass cord forms a single-chain structure. The problem is: because the infinitely long str...

AI Technical Summary

Problems solved by technology

The problem is: because the infinitely long straw curtain needs to be cut into single pieces according to the needs, and each becomes a straw curtain product, cutting the straw curtain needs to be cut along the direction perpendicular to the length direction of the straw curtain, and several straw curtain lines on the straw curtain are also cut at the same time. After being cut off, the grass cord of the single-chain structure is easy to loosen after being cut, and people have to deal with the straw cord at the cut point, such as: performing seaming, manual buckling, etc., which is labor-intensive and low-efficiency. The cost is high and the product quality is poor; in addition, the background technology requires 4-5 skilled workers to meet the production of a machine, which is a waste of manpower

In addition, the straw curtains produced in the background technology have large needle holes, and some may even form holes, which have poor warmth and shade effects and are not beautiful.

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