JPS5911732Y2 - Kanokorappa for sewing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a power saw wrapper for sewing machines used for hemming fabric with bias tape or the like. A curved plate is integrally connected to a mounting plate to the sewing machine, and a path for guiding the tape in a bent state in the width direction is formed between the first and second protruding plates. At the tip of the curved plate on the tape transfer side, a cut arrow part is formed which is continuous with the ridgeline part of the protruding curved plate, and the opposite edge of the cut arrow part is set so that the opposite edge of the cut arrow part is closer to the opening side of the cut arrow part with respect to the ridge line part. tilted away in the hand direction, with the curved plate portion continuing to the first protruding plate over the golden edge of the cut arrow part, and
The first projecting curved plate is integrally formed while being positioned between the opposing walls, and as the tape is transferred to the inside of the curved plate portion through the cut arrow portion, the tape from the guide path is reversed. This relates to a power saw for a sewing machine that is designed to be bent in the same direction, and the purpose is to make it possible to perform hemming stitches on fabric with a good appearance without disturbing the tape, through extremely simple structural improvements. shall be.

Next, embodiments of the present invention will be described in detail based on the drawings.

A first protruding plate 1 and a second protruding plate 2 which is bent and spaced apart from the first protruding plate 1 are integrally connected to a mounting plate 5 which is detachable from the throat plate 4 of the sewing machine. That double protruding curved plate 1
, 2, wrap the hemming tape b of the fabric a in the width direction W.
A path A to be guided in the bent state is formed, and the tip of the first curved plate 1 in the tape transport direction is press-worked to form a notch 6 in the ridgeline of the first curved plate 1. and the opposing edges of the notch 6 are inclined so as to be farther apart in the longitudinal direction of the ridge line toward the opening side of the ridge line,
in a state where it extends over the gold edge of the notch part 6, and
A curved plate portion 3 located between the opposing walls of the first curved plate 1 is integrally formed with the first curved plate 1, and further, in this curved plate portion 3, an inner surface of the curved plate portion 3 on the mounting plate side. S is arranged parallel or almost parallel to the mounting surface S1 of the mounting plate 5, and the free end side of the opposing edge of the cut arrow part 6 is set longer at the side far from the mounting plate 5 than at the side nearer to the mounting plate 5. ,
As shown in FIG. 2, as the tape b is transferred from the guide path A to the inside of the curved plate portion 3 through the notch 6, the W-shaped new tape b that has passed through the guide path A is transferred to both sides. While folding the edges inward, fold the fabric a in between.
It is equipped with a canopy trumpet that is bent to the opposite side with the

In summary, in the sewing machine power clip mentioned above, the inner surface S of the curved plate portion 3 on the mounting plate side is configured to be substantially parallel to the mounting surface S1 of the mounting plate 5, and
It is characterized in that the free ends of the opposing edges of the notch 6 are extended longer at the ends farther from the mounting plate than at the ends closer to the mounting plate.

That is, by setting the mounting plate side inner surface S of the curved plate portion 3 and the mounting surface S1 of the mounting plate 5 to be substantially parallel, the bending center plane So of the tape b is aligned with the mounting surface S1, as shown in FIG. It is now possible to take out the folded tape b while keeping it parallel to the throat plate surface, thereby bringing the presser foot closer to the tape exit of the wrapper and preventing wrinkles from forming on the tape b. You can now sew.

That is, as shown in FIG. 7, in the conventional structure in which the center of the curved plate portion 3 coincides with the center of the first protruding plate 1 that narrows at the end, the tape bending center plane S.

is inclined with respect to the mounting surface S1, and when the presser foot is brought close to the ratuparo, it is strained and the tape b becomes wrinkled.
Alternatively, if the cloth presser is moved away from the wrapper, the posture of the tape b will be disturbed, but such a problem can be solved by simply arranging the curved plate portion 3.

Furthermore, by setting the length of the free end of the opposite edge of the notch 6 to be longer as it is farther from the mounting plate, the upper side of the bent edge of the bending tape b can be extended more visually than the lower side. As a whole, it has become possible to perform sewing with a good finish and good appearance by simply setting the shape and arrangement of the curved plate parts that are integrally molded.

[Brief explanation of the drawing]

The drawings show an embodiment of the tension wrapper for a sewing machine according to the present invention, in which FIG. 1 is a perspective view showing a state in which the tension wrapper is attached to the throat plate, FIG. 2 is a perspective view showing a state in which the tape is bent and taken out, and FIG. FIG. 4 is a perspective view of a two-protrusion plate, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3. FIG. 5 is a bottom view of the curved plate portion, and FIG. 6 is a sectional view of the tape in a bent state. FIG. 7 is a conventional tape folding cross-sectional view corresponding to FIG. 6. 1...First curved plate, 2...Second curved plate, 3...Curved plate portion, 5...Mounting plate,
6... Notch, A... Guide route, b.
...Tape, S...Inner surface, S1...
...Mounting surface.

Claims (1)

[Scope of utility model registration request] A first protruding plate 1 and a second protruding plate 2 covering the first protruding plate 1 with a gap therebetween are integrally connected to a mounting plate 5 for the sewing machine, and the first and second protruding plates 1 and 2 are connected integrally to a mounting plate 5 for the sewing machine. In between, a path A is formed for guiding the tape b in a newly curved state in the width direction, and a cut continuous with the ridgeline of the first curved plate 1 is formed at the tip of the tape transfer side of the first curved plate 1. The opposite edge of the notch 6 is inclined so that the opening side of the notch 6 is further away from the longitudinal direction of the ridgeline, and the curved plate portion 3 is formed into the first protrusion. The curved plate 1 is formed integrally with the curved plate 1 so as to extend over the entire edge of the notch 6 and located between the opposing walls of the first protruding curved plate 1, and pass through the cutout portion 6 to form the curved portion. A force saw wrapper for a sewing machine is arranged so that the tape b from the guide path A is bent in the opposite direction as the tape is transferred to the inner side of the plate portion 3, and the tape b is bent in the opposite direction on the mounting plate side of the curved plate portion 3. The inner surface S of the notch 6 is configured to be almost parallel to the mounting surface S1 of the mounting plate 5, and the free end side of the opposing edge of the notch 6 is extended longer at the side far from the mounting plate than at the side closer to the mounting plate. A power grip for sewing machines that is characterized by: