JPH071101Y2 - Sewing machine presser foot - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This invention is designed for sewing with a sewing machine to sew clothing with rubber cords inserted into the tubular edges such as cuffs, hem and waist of pants. The present invention relates to a presser foot that is convenient for forming an opening for replacing a string.

[0002]

2. Description of the Related Art In a garment such as nightwear in which an elastic cord is inserted into a tubular end portion such as a cuff, a hem and a waist of pants, an elastic cord is usually inserted. The annular narrow bag-shaped part is provided with an opening for replacing the rubber cord. This opening uses a two-needle lockstitch sewing machine,
By folding back the edge of the tubular cloth and sewn the folded part with two seams parallel to each other along the edge of the cloth, insert the rubber cord sandwiched by the two seams. In the case of forming the annular narrow bag-shaped portion, it is formed by placing a slight distance between the sewing start position and the sewing end position. That is, when the folded portion of the tubular cloth edge portion is main-sewn along the edge of the cloth, it is not a continuous seam in a ring shape, but is left unsewn for a short distance, so that the folded piece of cloth An opening for replacing the rubber string is formed from the edge side of the to the inside of the annular narrow bag-shaped portion.

[0003]

By the way, in the case of forming an annular narrow bag-like portion for inserting a rubber cord at the tubular end edge of the sewn product, a slight amount is required to provide an opening for replacing the rubber cord. In order to leave unsewn for a distance, sewing is conventionally performed while feeding the cloth, and when the cloth sewing start position approaches the sewing position (needle position), the sewing manufacturer visually confirms the cloth sewing start position. Then, the sewing is finished when the sewing start position comes to the front side in the cloth feed direction by a predetermined distance from the sewing position. However, if the cloth to be sewn is a thick flexible material such as pile fabric or velvet or a raised material, it is difficult to see the seams and it is extremely difficult to confirm the starting position of the cloth while sewing. . For this reason, conventionally, there has been a problem that the sizes of the openings for replacing the rubber cords are not uniform, and the re-sewing frequently occurs.

The present invention has been made in view of the above circumstances, and it is easy and constant to perform a sewing operation without the difficult work of a sewing manufacturer visually checking the seams. It is a technical object to provide a presser foot for a sewing machine that can form an opening for replacing a rubber string of a size.

[0005]

In this invention, the presser foot of the sewing machine is improved, and it is attached to one side surface of the cloth pressing portion so as to project toward the front side in the cloth feeding direction along the side surface. The mounting plate part and the lower part of the front end of this mounting plate part on the front side in the cloth feed direction are integrated in parallel with the tip side of the cloth presser part so as to be orthogonal to the cloth feed direction and at a distance from the bottom surface of the cloth presser part. An auxiliary component composed of a cloth feed restricting piece projecting from the above is added. In this case, the mounting plate portion may be attached to the cloth pressing portion along the side surface thereof so as to be movable and adjustable in the cloth feeding direction.

[0006]

By using, for example, a two-needle lockstitch sewing machine in which the presser foot having the above-mentioned structure is attached to the sewing machine arm, the cloth-sewn edge portion which is sewn in a tubular shape is folded back, and the folded portion is folded. When the cloth feed restricting piece of the presser foot is sandwiched with one piece of cloth, it is sent to the lower position of the cloth presser, and when the main stitches are made along the edges of the cloth with the seams parallel to each other, it is sewn in an annular shape. When the sewing start position comes close to the sewing position again, the cloth joining point at the sewing start position comes into contact with and engages with the front end side of the cloth feed regulation piece, so that the cloth cannot be fed any further forward. Sewing will not proceed. As a result, an unsewn portion of a certain size is formed between the sewing start position and the sewing end position, which corresponds to the distance between the front edge of the cloth feed restricting piece of the presser foot and the vertical movement position of the sewing machine needle. ,
An opening for inserting a rubber cord, which is always of a constant size, is formed which communicates with the annular narrow bag-shaped portion for inserting the rubber cord. Also, when the mounting plate is attached to the cloth retainer along the side surface of the cloth so as to be movable and adjustable in the cloth feeding direction, by moving the mounting plate, and thus the cloth feed restricting piece back and forth in the cloth feeding direction. The size of the opening for replacing the rubber cord can be adjusted appropriately.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a presser foot of a sewing machine showing an embodiment of the present invention. This presser foot 10 is
Two needle holes 14, 14 which are parallel to each other are bored. The auxiliary component 18 is attached to the fixing plate 16 fixed to one side surface of the cloth pressing portion 12. The auxiliary component 18 is provided with the work clamp 12
A mounting plate portion 20 that is locked to the fixing plate 16 so as to project to the front side in the cloth feeding direction along one side surface, and the cloth feeding to the lower portion of the front end of the mounting plate portion 20 in the cloth feeding direction. The cloth feed restricting piece 22 is provided so as to project in parallel to the tip side of the cloth pressing portion 12 so as to be orthogonal to the direction, and these are integrally formed. The cloth feed restricting piece 22 is formed in a thin thin plate shape which is substantially flush with the bottom surface of the cloth pressing portion 12, and the sewing material is sewn between the cloth feed restricting piece 22 and the bottom surface of the cloth pressing portion 12. From the top side of the cloth feed regulation piece 22,
An interval 24 is provided for passing the bottom side of the twelve.

Further, the mounting plate portion 20 of the auxiliary component 18 is formed with a long groove 26 along the longitudinal direction thereof, and the screw shaft portions of the pair of fixing screws 28, 28 are fitted in the long groove 26 of the mounting plate portion 20. Insert each, and the tip of the screw shaft of each fixing screw 28,
By screwing into the respective screw holes (not shown) screwed in the fixing plate 16 and pinching the mounting plate portion 20 with the heads of the fixing screws 28 and the fixing plate 16, Auxiliary parts
18 can be attached. Then, with the fixing screw 28 loosened, the mounting plate portion 20 is moved back and forth along the fixing plate 16, and the fixing screw 28 is tightened at an appropriate position, whereby the cloth feed restricting piece 22 for the cloth pressing portion 12 is provided. It is structured so that the position of can be adjusted.

Next, the presser foot 10 constructed as described above.
Fig. 2 and Fig. 2 for the work of attaching the sewing machine to the arm of a two-needle lockstitch sewing machine, and using the sewing machine Three
Will be described with reference to.

First, the edge portion of the cloth 1 sewn in a tubular shape is folded back inward (note that FIG. 2 is a diagram showing the developed edge portion of the cloth 1 in FIG. 2, and the edge portion of the cloth 1 is shown in FIG. 2). Is drawn so as to be folded back to the upper side), and the cloth feed restricting piece 22 of the presser foot 10 is inserted between the folded back strip-shaped cloth piece portion 2 and the base portion of the cloth 1. The front side of the fold-over portion is placed below the cloth pressing portion 12, and the fold-over portion of the cloth 1 is pressed by the cloth pressing portion 12.

When the above preparation is completed, the sewing machine is driven to sequentially feed the folded portion of the cloth 1 to the position below the cloth pressing portion 12, and the folded portion of the cloth 1 is surrounded by the two sewing machine needles 3. Sew along. As a result, in the folded portion of the edge portion of the cloth 1, the annular narrow bag-like portion 5 for inserting the rubber cord sandwiched by the two parallel seams 4 and 4 along the edge portion.
Is formed. Then, the folded portion of the cloth 1 is sewn in an annular shape, the sewing start position S approaches again to the sewing position where the sewing machine needle 3 moves up and down through the needle hole 14, and finally, as shown in FIG.
As shown in the perspective view and the longitudinal sectional view in FIG. 3, the cloth joining portion at the sewing start position S comes into contact with and engages with the front end side of the cloth feed restricting piece 22. In this case, the cloth 1 cannot be fed further forward, and the sewing operation is finished at this point. As a result, between the sewing start position S and the sewing end position E, a constant dimension corresponding to the distance L between the front end side of the cloth feed restricting piece 22 of the presser foot 10 and the vertical movement position of the sewing machine needle 3 An unsewn portion is formed, and between the strip-shaped cloth piece portion 2 and the base portion of the cloth 1 in the unsewn portion, an opening for replacing a rubber string is introduced into an annular narrow bag-shaped portion 5 for inserting a rubber string. 6 is formed. 7 in FIG.
Is an overedging previously applied to the edge of the cloth 1.

In order to change the size of the opening 6 for replacing the rubber cord in the presser foot 10, after loosening the fixing screw 28, the mounting plate 20 is moved back and forth along the fixing plate 16 in that state. Then, after setting the distance L between the front side of the cloth feed restricting piece 22 and the vertical movement position of the sewing machine needle 3 to a desired value, the fixing screw 28 may be tightened.

Although the above description is for the presser foot used in the two-needle lockstitch sewing machine, the present invention can be applied to the presser foot used in the one-needle lockstitch sewing machine. . That is, for example, a three-winding wrapper device is attached to the upper surface of the sewing machine bed portion of a one-needle lockstitch sewing machine, and while the edge portion of the cloth is folded in three by the three-winding wrapper device, the folded portion is pressed down. To the position below
When forming an annular narrow bag-shaped part for rubber band insertion by sewing the part where the cloth is folded in three with a sewing machine needle, apply the present invention to the presser foot used for it. You can also

[0015]

Since the present invention is constructed and operates as described above, the presser foot according to the present invention is used, and an annular thin line for inserting a rubber cord is attached to the edge of the cloth sewn in a tubular shape. When the width bag-shaped portion is formed, the size of the opening for replacing the rubber cord can be made constant at all times, and the sewing work for that purpose is simple and does not require special skill.

[Brief description of drawings]

FIG. 1 is a perspective view of a presser foot of a sewing machine showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the presser foot is used to form an annular narrow bag-like portion for inserting a rubber cord on an edge portion of a cloth sewn in a tubular shape, It is the figure which expanded and represented the edge part.

FIG. 3 is likewise a vertical sectional view.

[Explanation of symbols]

 10 Presser foot 12 Cloth presser section 14 Needle hole 16 Fixing plate 18 Auxiliary component 20 Mounting plate section 22 Cloth feed regulation piece 26 Long groove 28 Fixing screw

Claims (2)

[Scope of utility model registration request] 1. A mounting plate portion is attached to one side surface of the cloth pressing portion so as to project toward the front side in the cloth feeding direction along the side surface, and the front end of the mounting plate portion in the cloth feeding direction is attached. The presser foot of the sewing machine characterized in that a cloth feed restricting piece is integrally provided on the lower portion so as to be orthogonal to the cloth feed direction, parallel to the leading edge of the cloth presser section, and spaced from the bottom surface of the cloth presser section. . 2. The mounting plate portion is attached to the cloth retainer portion along the side surface thereof so as to be movable and adjustable in the cloth feed direction.
The presser foot of the sewing machine shown.