Sewing device capable of loosening and tightening trouser waists

Abstract

The invention discloses a sewing device capable of loosening and tightening trouser waists. The device is characterized by comprising a rack, a work table horizontally arranged on the rack and a sewing machine head used for sewing the trouser waists, the sewing machine head is arranged above the work table, and a strutting assembly used for strutting the trouser waists is arranged on the lower surface of the work table; the strutting assembly comprises a mounting plate fixedly connected with the lower surface of the work table, two fixed rolling rollers rotatably connected to the mounting plate and two movable rolling rollers close to or away from each other, the two fixed rolling rollers are respectively located at two sides of the work table in the width direction, and the movable rolling rollers are both connected with a mounting frame through swing arms; the ends of the swing arms are hinged to the mounting plate, the other ends of the swing arms are rotatably connected with the movable rolling rollers, and one side, back on to the fixed rolling roller and the movable rolling rollers, of the mounting plate is provided with a drive assembly used for driving the swing arms to reverse. The sewing device capable of loosening and tightening the trouser waists can be applicable to the trouser waists with different sizes, the application range is wide, sewing and loosening the trouser waists is convenient and labor-saving, and the sewing efficiency is high.

Description

technical field [0001] The invention relates to the technical field of sewing machines, in particular to an elastic waistband sewing device. Background technique [0002] In the garment processing industry, it is often necessary to sew garments such as trouser waists with elastic functions. At present, when processing such garments with elastic functions, the following three methods are usually used: one is purely hand-sewn, each seam When making a certain length, it needs to stop, which is very inefficient, and it also brings unsightly stitches, and there is a "bird's nest" phenomenon; the second is the use of pneumatic expansion devices, which have disadvantages such as small application range, difficulty in getting on and off the trouser waist, and inability to adjust at any time; With track manpower adjustment device, after the size of this kind of device is fixed, it needs manpower to expand the processing material or fixing mechanism, which is labor intensive and low e...

AI Technical Summary

Problems solved by technology

[0002] In the garment processing industry, it is often necessary to sew garments such as trouser waists with elastic functions. At present, when processing such garments with elastic functions, the following three methods are usually used: one is purely hand-sewn, each seam When making a certain length, it needs to stop, which is very inefficient, and it also brings unsightly stitches, and there is a "bird's nest" phenomenon; the second is the use of pn

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