A Calculation Method of Buttonhole Bottom Thread Consumption of Buttonhole Machine

Abstract

The invention provides a buttonhole bottom thread consumption calculation method of a buttonhole machine, which belongs to the technical field of sewing equipment. It solves the problem that the calculation method of the consumption of the bottom line of the keyhole is relatively complicated. The buttonhole bottom line consumption calculation method includes the following steps: S1. Identify the current keyhole shape combination. The keyhole shape combination is composed of four structural modules: left hemming, right hemming, upper tack and lower tack, and call the corresponding four The thread quantity consumption calculation formula of each module in a structural module; S2, obtain the keyhole parameter corresponding to the identified current keyhole shape combination, and calculate S 0 And the amount of thread required for the bottom seam L: S 0 =E 左 +E 右 +E 上套结 +E 下套结 ;L=(I+N 1 +N 2 +M 1 +M 2 +5)*2*n; S3. Calculate the current buttonhole bottom thread consumption S according to the keyhole sewing stitch pattern: S=S 0 *x*y+L. This calculation method has the advantages of convenient, simple, accurate and wide application.

Description

Technical field [0001] The present invention belongs to the technical field of sewing equipment, to a keyhole escutcheon baseline consumption calculation method. Background technique [0002] Keyhole button hole machine is mainly used for processing all types of clothing, into the first keyhole machine (straight eye machine) and the round keyhole (water hyacinth car), it is divided into two kinds of finishing and not finishing, garment a very important mechanical equipment. Keyhole system consists of nine organs: feeding mechanism, crochet mechanism, the needle bar mechanism, stretch feeding mechanism, hook shuttle mechanism, the knife mechanism, slide mechanism, distribution mechanism and the upper thread cutting device automatically. Each agency has its own characteristics and functions, with relative independence, but they are at work is close cooperation and mutual coordination. [0003] Buttonhole darning sewing machine needle bar swing generally use double looper, bifurcate...

AI Technical Summary

Problems solved by technology

Even if the main parameters (cloth cutting width, left and right hemming size, stitch distance, etc.) are the same among the 26 buttonhole shapes, the buttonhole bottom thread consumption is not the same, and the buttonhole bottom thread consumption is also affected by the buttonhole shape, buttonhole Size, keyhole sewing form (including stitch type, bottoming seam, double seam, etc.), therefore, it is difficult to accurately detect the consumption of keyhole bottom thread

Although this technical solution can detect the consumption of buttonhole bottom thread to a certain extent, its calculation method is relatively complicated, and it cannot be applied to the calculation of buttonhole bottom thread consumption of keyholes such as reinforcement seams

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