Central cutter mechanism for automatic bag-opening parallel sewing machine

Abstract

The invention provides a central cutter mechanism for an automatic bag-opening parallel sewing machine and belongs to the technical field of machinery. The problems of the conventional central cutter mechanism for the automatic bag-opening parallel sewing machine, such as low cutting resolution ratio and low mechanical property, are solved. The central cutter mechanism for the automatic bag-opening parallel sewing machine is arranged on a machine body of the bag-opening parallel sewing machine and is connected with a central cutter rod of the bag-opening parallel sewing machine. The central cutter mechanism comprises a cutter connecting rod, a driving mechanism and a clutch mechanism, wherein one end of the cutter connecting rod is hinged with the central cutter rod; the other end of the cutter connecting rod is connected with the driving mechanism; during an operation process of the driving mechanism, the central cutter rod can be driven by the cutter connecting rod to repeatedly move up and down; the clutch mechanism is connected with the cutter connecting rod; and the clutch mechanism enable the driving mechanism to drive or not to drive the central cutter rod to repeatedly move up and down during the operation process. The central cutter mechanism for the automatic bag-opening parallel sewing machine has the advantages of high practical value, high use safety and the like.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a sewing machine, in particular to a center cutter mechanism of an automatic bag-opening lockstitch sewing machine. Background technique [0002] A lockstitch sewing machine is mainly a machine that uses a sewing thread to form a stitch on the sewing material to interweave or sew one or more layers of sewing material. It is usually divided into thin material and thick material. Lockstitch sewing machine can sew fabrics such as cotton, linen, silk, wool, artificial fiber and leather, plastic, paper and other products. Thin material is generally used for knitting, underwear, shirts, Uniforms, etc., thick materials are generally used for all kinds of sportswear, jeans, fashion, coats, shoes and hats, leather jeans, bags, etc. Lockstitch sewing machine is the most basic type of sewing equipment, and it is the simplest in sewing. The stitches are neat and beautiful, the stitches are ...

AI Technical Summary

Problems solved by technology

When it is greater than or equal to the distance between the needle of the design mechanism and the front edge of the center cutter, the clutch device of the center cutter mechanism can be used to lift the knife first to separate the center cutter to control the length of the slit; when it is less than this design method cannot be completed, but cannot meet the needs of use

Furthermore, since the mechanism and the center cutter are the same drive source, the cutting length of the up-and-down movement of the center cutter cannot be changed, that is, the cutting length of a spacing amount is a fixed value, so that the cutting resolution is rough, and it will be cut off during sewing. The method in which the center cutter rises to limit the cutting state cannot form a center slit of the correct length

[0004] The disadvantage of this mechanism is that the driving force of the knife rod comes from the main motor, which cannot meet the needs of small needle width; Movement with the main motor increases noise and vibration, reduces mechanical performance, and increases potential safety hazards

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