JP2551154Y2 - Overlock sewing machine cloth guide for hemming - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION Field of the Invention The present invention relates to a cloth guide for an overlock sewing machine provided for hemming sewing. More specifically, a cloth edge is bent into an S shape before a presser foot. The present invention relates to a cloth guide for a folded end used for an overlock sewing machine provided with a hem pulling ruler and a guide blade used as a guide when feeding under a presser foot.

Conventional technology Hemming stitching is generally a hemming ruler that guides the lower bent edge of the fabric edge folded into an S shape in front of the presser foot from the outside, and an inverted J shape. This is performed by providing guide blades for guiding and guiding the lower bent end from the inside, and the guide blades can be inverted, and the insertion is performed after raising the guide blades when inserting a fabric edge.

The guide vanes are also No. 62-43502, and No. 63-366
As shown in No. 3 and Japanese Utility Model Publication No. 63-3664, a tongue-shaped guide part projecting below the presser foot protrudes to guide the bent end to near the needle drop.

Problems to be Solved by the Invention In the case of the guide vane provided with the tongue-shaped guide portion as described above, the bent end is guided to near the needle drop, so that the proper hem does not occur without sewing detachment or deep sewing. Although there is an advantage that the sewing can be performed, there are disadvantages in that the guide portion hinders the insertion of the cloth, and the guide portion is easily broken or bent.

The present invention has been made to solve the above problems.

In order to solve the problem, the present invention is provided with a cloth guide that slightly guides the bent end from the outside to the vicinity of the needle drop from the hem pulling ruler so as to protrude slightly from the needle plate.

That is, the present invention provides a hem pulling ruler that guides, from the outside, a lower bent end of a cloth edge bent into an S shape before a presser foot,
An inverted J-shaped guide ruler that guides the upper bent portion and the lower bent end from the inside, and a hem pull ruler for an overlock sewing machine that has a scalpel for cloth cutting in the notch groove of the needle plate. Between the needle and the needle drop, and on the side of the knife in the notch groove, the upper part has a guide part slightly protruding from the upper surface of the needle plate and an inclined part reaching the guide part, the inclined part from the hem pulling ruler The bent end of the delivered cloth is guided to the guide portion without giving a hook to the bent end of the fabric, and the guide portion is provided with a cloth guide that guides the bent end to near the needle drop. .

The cloth guide may be formed integrally with the needle plate, but is preferably separate from the needle plate and attached to the needle plate so as to be position-adjustable.

Action The cloth guide guides the bent end from the hem pull ruler to the needle drop, so that proper hem pull sewing can be performed without causing stitching or deep stitching. There is no hindrance and no deformation.

The bent end sent from the hem pulling ruler smoothly moves from the inclined portion to the guide portion.

Example In front of the presser foot 1 of the overlock sewing machine, a hem pulling ruler 2 for guiding the lower bent end of the S-shaped cloth edge from the outside, and guiding the lower bent end from the inside. And an inverted J-shaped guide vane 3 for guiding the upper bent portion is provided. The guide vane 3 is provided on the hem pulling ruler at the base fork 3a in the lateral direction of FIG. It is mounted so that the position can be adjusted.

As shown in FIG. 3, an inverted L-shaped guide groove 6 is formed on the back surface of the needle plate 5, and a notch groove 8 into which a lower knife 7 for cutting the cloth edge is fitted has a seam passing through the needle drop 9. The lower knife 7 is formed so as to protrude slightly beyond the extension of the forming line, and a rectangular gap 11 is formed. An inverted L-shaped substrate 12 having the same thickness as the depth of the groove 6 is fitted into the guide groove 6 of the needle plate 5,
The cloth guide 15 is slightly fixed in the left and right direction (about 2 mm in the left and right directions) by a set screw 14 screwed into the needle, and a cloth guide 15 slightly thicker than the thickness of the needle plate 5 is integrally formed at the tip of the substrate 12.
It is loosely fitted in the gap 11. As shown in FIG. 2, it protrudes from the upper surface of the needle plate 5 by about 0.5 mm. As shown in detail in FIG. 4, the cloth guide 15 includes a linear guide portion 15a for guiding the bent end of the cloth sent from the hem pulling ruler, and an inclined portion 15b reaching the portion. The portion 15a is usually made flush with the cloth guide portion 2a at the tip of the hem pulling ruler by adjusting the mounting position of the substrate 12.

Further, as shown in FIG.
15c projects slightly from the upper surface of the needle plate 5 and has a needle drop 9
The side extends along the upper surface of the needle plate 5. This tip 15c
May be extended longer to the needle entry side depending on the nature of the sewing object.

In the drawing, reference numeral 16 denotes an upper knife which moves up and down and cooperates with the lower knife 7 to cut the cloth, 17 denotes a needle plate claw, 18 denotes a presser claw, and does not contact the upper surface of the cloth guide 15. One end is fixed to the presser foot 1.

Effect of the Invention As described above, the cloth guide of the present invention can guide the bent end of the cloth to near the needle drop, but the cloth guide is located in the notch groove where the cloth cutting knife of the needle plate is arranged. Because it is provided slightly projecting from the needle plate, it does not hinder the insertion of the cloth into the guide blades, does not break or bend, and has an inclined part that reaches the guide part. The folded edge of the cloth can be smoothly transferred to the guide portion without giving a hook to the folded edge of the cloth sent from the hem pulling ruler.

In addition, the cloth guide is separate from the needle plate and can be attached to the needle plate so as to be position-adjustable, so that the cloth guide portion can be flush with the hem pulling ruler.

[Brief description of the drawings]

FIG. 1 is a plan view around the needle plate at the time of hemming, and FIG.
FIG. 3 is a cross-sectional view of the needle plate, FIG. 3 is an enlarged rear view of a main portion of the back surface of the needle plate, and FIG. 4 is an enlarged plan view of a main portion of the cloth guide. 1 ... foot, 2 ... hem pulling ruler 3 ... guide blade, 5 ... needle plate, 6 ... guide groove 15 ... cloth guide

Claims (2)

(57) [Scope of request for utility model registration] 1. A hem pulling ruler for guiding a lower bent end of a fabric edge bent into an S shape in front of a presser foot from outside, and a lower bent end for guiding an upper bent portion. In the overlock sewing machine that has a J-shaped guide blade that guides the inside from the inside and a knife for cutting cloth in the cutout groove of the needle plate, the knife side between the hem pulling ruler and the needle drop and in the cutout groove The upper part has a guide part slightly protruding from the upper surface of the needle plate and an inclined part reaching the guide part, and the inclined part reaches the bent end of the cloth sent from the hem pulling ruler to the guide part. A cloth guide that guides the bent end without giving a hook, and guides the bent end of the cloth to near the needle drop. 2. A cloth guide for an overlock sewing machine according to claim 1, wherein the cloth guide is separate from the needle plate and is attached to the back surface of the needle plate so as to be adjustable in position.