Edge folding device of automatic pocket sewing machine

Abstract

The invention provides an edge folding device of an automatic pocket sewing machine, belongs to the technical field of sewing equipment, and solves the problem that the edge folding device of an existing pocket sewing machine is poor in pocket positioning precision. The edge folding device is characterized in that a plurality of moving structures are fixedly connected into a fixing rack, a pocketbottom folding piece and pocket edge folding pieces are connected with corresponding moving structures, a buffer pad is fixedly connected to the bottom of the fixing rack, a pocket-shaped plate can beabutted against the buffer pad, corner folding pieces are arranged on two sides of the rear end of the pocket-shaped plate, the front end of each corner folding piece is provided with an obliquely arranged first corner folding face, the rear end of each of the two pocket edge folding pieces is provided with an obliquely arranged second corner folding face, the first corner folding faces are parallel with the second corner folding faces, a pair of rotating air cylinders is fixedly connected to the fixing rack, a rotary folding piece is fixedly connected to the end of the piston rod of each rotating air cylinder, and the rotary folding pieces can move to corner folding grooves along the corner folding pieces. The edge folding device is capable of increasing pocket positioning precision.

Description

technical field [0001] The invention belongs to the technical field of sewing equipment, and relates to a hemming device of an automatic bag sticking machine. Background technique [0002] Pocket patching machine is mainly used in the sewing of jeans and shirt pockets. Flat stitch sewing and tacking can be completed at one time. It is suitable for sewing various jeans back pockets, shirt pockets, and other irregularly shaped parts in garment processing. suture. [0003] Existing bag sticking machines, for example, Chinese patent literature discloses an iron-free hemming device [application number: 201010105715.5; authorization announcement number: CN102146621B] of an automatic bag sticking machine, which includes a fixed template seat, three groups of upper template devices and Three sets of lower formwork devices, two sets of mounting brackets are provided at the rear of the fixed formwork seat, and a protective cover is provided on the top surface of the fixed formwork se...

AI Technical Summary

Problems solved by technology

The hemming device of this structure lacks parts for reverse hemming of the pocket corners at the opening of the pocket, and there is a problem that the corners of the pockets are exposed outside the pocket after the sewing of the pockets is completed, and there is a problem of bulging at the corners of the pockets. Reduce the processing quality; and because the fixed formwork seat and the middle pocket-shaped plate are made of hard metal materials, the pockets cannot be clamped well, and when the pockets are folded successively by the template male seat, the pockets will move. problems, which cause the pocket to deviate from the set position, the pocket cannot be sewn in place, and the processing quality is reduced

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