Sewing machine and the process of sewing together at least two overlapping sheets of fabric by means of said sewing machine

Abstract

A sewing machine of the "overlock", "cut and sew" type for sewing together at least two fabric sheets (3a, 3b), said at least two fabric sheets (3a, 3b) 3b) overlapping together and belonging to one or more fabrics, said sewing machine comprising at least: a needle plate (2) adapted to support at least two overlapping fabric sheets (3a) of one or more fabrics , 3b), and the at least two overlapping fabric sheets (3a, 3b) slide to form stitches (10a, 10b, 10c), the needle board (2) has a through opening and at least one lateral appendage ( 6), said opening defines a corresponding seat (4) serving as a passage for a sewing machine needle (5), said at least one lateral appendage (6) defines a sliding line (7) of a stitch step (10a, 10b, 10c) ); the lower crochet hook (14); the upper crochet hook (15); and at least one sewing machine needle bearing device (11), said at least one sewing machine needle bearing device having at least three sewing machine needles mounted thereon (5), said at least three sewing machine needles (5) are positioned laterally to each other, are aligned with each other and are provided with corresponding sewing machine threads (10), said at least three sewing machine needles (5) being adapted to Said overlapping sheets of fabric (3a, 3b) are passed through the base (4) of said needle board (2) having at least three channels for sewing machine needles (5). bases (4), each base (4) serving as a passage for sewing machine needles (5) is configured so that at least one corresponding sewing machine needle passes through said base, said needle board (2) has a corresponding partition ( 8), said partition (8) is adapted to at least partially separate each base serving as the passage of the sewing machine needle (5) with the Adjacent bases (4) of the channel are separated so that at least three parallel stitch steps (10a, 10b, 10c) can be formed, which are different from each other and mutually related to each other. keep away.

Description

technical field [0001] The invention relates to a sewing machine of the "overlock" "cut and sew" type for sewing together at least two superimposed fabric sheets belonging to one or more fabrics. The invention also relates to the process of sewing together at least two overlapping sheets of fabric by means of an overlock cut-and-sew type sewing machine. Background technique [0002] Said "overlock" "cut and sew" sewing machine may be, for example, a product model type of UnionSpecial brand in the 9M series, or similar to, for example, the product 103XQA-GR described in the relevant instructions and catalog of November 2006 . [0003] The type of stitches known as overlock or overlock are well known per se in the art and therefore will not be described in detail in the description of the present invention. It is known that this type of sewing machine can be used in a number of applications, and sewing of light fabrics such as women's tights etc. is also included in these ap...

AI Technical Summary

Problems solved by technology

This solution is not without drawbacks, as the presence of the first parallel position can block the slippage of the stitches, and the structure of the needle plate as shown in this patent document determines a stitch, the stitch shown is at the junction of two fabric sheets The points are not very tight, especially in the case of light fabrics, there is a risk of openings in the stitches at some joining points, which is an aesthetic and functional defect

Images