JP2973087B2 - Product holding device and automatic curl release method for sewing machine for knit product sewing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for holding a product in a sewing machine for sewing a knit product used for sewing a knit product and a method for automatically releasing curl.

[0002]

2. Description of the Related Art As shown in FIG. 3, a product holding device of a conventional sewing machine for sewing a knitted product has a shape in which a tip portion is slightly upwardly curved as shown in FIG. When sewing a knit product that curls when the edge is rounded using such a presser foot, the curl of the edge is manually moved as the knit product progresses. It had to be sewn while being stretched flat, which was very troublesome.

[0003] The present invention provides a sewing machine for sewing a knit product, which can sew while extending a curl generated at an edge portion of a knit product by itself and saves the trouble of extending the curl by hand.

[0004]

The gist of the present invention will be described with reference to the accompanying drawings.

[0005] The knit product 1a is attached to the tip 3 of the presser foot a for holding the knit products 1a and 1b to be sewn from above.
A substantially vertical rising front wall 2 is provided for pushing and flattening the curled portion 6 formed at the edge of 1b, and the rising front wall 2 is used to transfer the knit products 1a and 1b on the curled portion 6 side. formed in sled-like surface 2 that outer were formed inclined slope 2 that have retreated toward the transfer direction of the knitted article 1a · 1b with respect to the direction, the presser foot a
Wherein the tip portion 3 and the outer retracted sloped sled-like part 3, the needle plate b for supporting the knit product 1a · 1b of sewing machine
A protrusion 5 is provided near the front end of the presser foot a on the same side as the front end side, and the outer receding sled-shaped portion 3 which is almost vertical and extends the curled portion 6 flat on the protrusion 5 is formed. A rising opposing wall surface 4 is formed opposite to the front wall surface 2 of the front end 3 of the presser foot a.
A knitwear sewing the outer for transfer direction of the knitted article 1a · 1b serving as the curl portion 3 side, characterized in that formed on the inclined slope 4 you are retracted toward the transfer direction of the knitted article 1a · 1b The present invention relates to a product holding device in a sewing machine for use.

[0006] Also, a knit product 1a · 1
A substantially frontal rising front wall 2 is provided at the front end 3 of the presser foot a for pressing the upper side b of the knitted product 1a or 1b. a sled-like surface outside is formed in the inclined slope 2 that have <br/> retreated toward the transfer direction of the knitted article 1a · 1b for transporting direction of the curl portion 6 side becomes knitwear 1a · 1b 2 and the tip part 3 of the presser foot a is an outwardly receding sled-shaped part 3, and is the same as the front end side of the presser foot a of the needle plate b which supports the knit products 1a and 1b to be machined. A protruding portion 5 is provided near the front end on the side, and the curving portion 6 is pushed flatly on the protruding portion 5 and the sled portion 3 having an outwardly receding slanting shape which is nearly vertical is provided.
The rising opposing wall surface 4 facing the rising front wall surface 2 of the distal end portion 3 of the presser foot a is formed.
The outside of the knit product 1a with respect to the transfer direction of the
· 1b toward the transfer direction of forming the inclined slope 4 you are retracted, ridges 5 of the sled-like portion 3 of the presser foot a needle plate b
The present invention relates to an automatic curl release method for a sewing machine for sewing knitted products, wherein the upper and lower curled portions 6 of the knitted products 1a and 1b are stretched flat by themselves as the sewing progresses. is there.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be briefly described with reference to the drawings, which are examples of embodiments, showing the functions and effects.

The knitted products 1a and 1b are arranged such that the front wall 2 of the front end 3 of the presser foot a rises to the curl portion 6 side.
The outer side with respect to the transfer direction of the knitted product 1a, 1b is receded in the transfer direction of the knit product 1a, 1b, is formed on an inclined surface 2 which is receded by a predetermined angle toward the outside when viewed from a plane,
In addition, the knitted product 1 having the rising opposing wall surface 4 of the ridge portion 5 provided near the tip of the needle plate b on the curl portion 3 side
The outside of the knit product 1a with respect to the transfer direction of the
The knitted product 1a to be sewing-machined is formed on the inclined surface 4 which is receded in the transfer direction of 1b and is receded and inclined at substantially the same angle as the rising front wall surface 2 toward the outside as viewed from the plane. When the curled edge portion 1b abuts against the inclined surface 2 and is drawn under the presser foot a by the sewing operation, the curled portion 6 is pushed by the inclined surface 2 and the inclined surface 4. Stretched, knitted product 1a by itself
-Flatten the curled portion 6 at the edge of 1b. Therefore, the curl portion 6 of the knit products 1a and 1b can be sewn without being stretched by hand. Therefore, it is possible to prevent a drawback that the conventional presser gets on the curl as in the conventional presser foot.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a presser foot a has a knit product 1a, 1b sandwiched between it and a needle plate b, and is 2 to 5 mm from an edge.
Knitted products 1a and 1
b is sent to the lower side of the presser foot a while the two pieces are sewn together by the sewing machine operation. At this time, the curl portion 6 formed at the edge of the knit products 1a and 1b has the presser foot a on the inclined surface 2 of the sled-shaped portion 3, and the needle plate b has the inclined surface 4 of the ridge portion 5. The curled portion 6 is pressed and stretched flat by itself without being inserted and pinched while being curled between the needle plate b and the presser foot a because both of the inclined surfaces 2 and 4 recede outward. (Stretched) while being sewn.

The sled-shaped portion 3 for flatly extending the upper curl portion 6 formed at the tip of the presser foot a also flatly stretches the lower curl portion 6 formed near the tip of the needle plate b. The ridges 5 are also formed integrally with the presser foot a, respectively, but may have either a structure in which a different material is provided or a structure in which the same material is deformed.

[0011]

As described above, according to the present invention, the curled edge of the knit product to be sewn is pulled down to the lower side of the presser foot by sewing operation while abutting against the inclined surface. At this time, the curled portion is pushed out and stretched by the inclined surface that recedes outward and the inclined surface that is oppositely inclined at the same angle, and the curl portion at the edge of the knit product is corrected by itself to be flat. A product holding device for a knit product sewing machine capable of automatically and smoothly sewing a curled portion without manually stretching the curled portion, and an automatic curl canceling method for a knit product sewing machine.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention.

FIG. 3 is a side view of the prior art.

FIG. 4 is a side view of a stitched knit product.

FIG. 5 is a longitudinal sectional side view of a ridge portion of a needle plate.

[Explanation of symbols]

 a Holder b Needle plate 1a, 1b Knitted product 2 Inclined surface 3 Sled-shaped portion 4 Inclined surface 5 Protrusion 6 Curled portion

Continuation of the front page (56) References JP-A 1-175776 (JP, U) JP-A 63-114281 (JP, U) JP-B 59-45395 (JP, B2) JP-B 63-3662 (JP) , Y2) Jikken Sho 60-3817 (JP, Y2) Jikken Sho 53-15463 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) D05B 35/00 D05B 29/06 D05B 73/12

Claims (2)

(57) [Claims] 1. An almost vertical rising front wall surface for flatly extending a curled portion formed at an edge of a knit product is provided at a tip end of a presser foot for holding a knit product to be sewn from above. the walls, the outer for transfer direction of the knitted product composed of said curl portion side is formed in a sled shape surface forming the inclined slope you are retracted toward the transfer direction of the knitted article, the distal end portion of the presser foot It is the same as the tip side of the presser foot of the needle plate that supports the knit product to be machined, with a sled-shaped portion that is inclined outwardly.
A protruding portion is provided near the front end of the side, and the curling portion is flattened and extended to the protruding portion. forming a rising opposing walls, the rising opposite wall, outer with respect to the transport direction of the knitted product composed of said curl portion side, characterized in that formed on the inclined slope you are retracted toward the transfer direction of the knitted article Product holding device for sewing machine for knit product sewing. 2. A substantially vertical rising front wall surface for flatly extending a curled portion formed at an edge of the knit product is provided at a tip of a presser foot for holding the knit product to be sewn from above. the walls, the outer for transfer direction of the knitted product composed of said curl portion side is formed in a sled shape surfaces formed on the inclined slope you are retracted toward the transfer direction of the knitted article, the distal end portion of the presser foot It is the same as the tip side of the presser foot of the needle plate that supports the knit product to be machined, with a sled-shaped portion that is inclined outwardly.
A protruding portion is provided near the front end of the side, and the curling portion is flattened and extended to the protruding portion. forming a rising opposing walls, the rising opposite wall, said outer relative to the transport direction of the knitted product composed of the curled portion side is formed in the inclined slope you are retracted toward the transfer direction of the knitted product, the presser foot Automatic curl in a sewing machine for sewing knit products, characterized in that the upper and lower curled portions of the knit product are stretched flat by themselves as the sewing machine progresses by the sled-shaped portion and the ridge portion of the needle plate , and the sewing machine is sewn. Release method.