WO2017206469A1

WO2017206469A1 - Sewing machine presser foot applicable to sewing of wire ring casing of bra

Info

Publication number: WO2017206469A1
Application number: PCT/CN2016/108873
Authority: WO
Inventors: 张穗龙
Original assignee: 开平科联织带发展有限公司
Priority date: 2016-05-31
Filing date: 2016-12-07
Publication date: 2017-12-07
Also published as: CN105926180A

Abstract

A sewing machine presser foot applicable to sewing of a wire ring casing of a bra. The sewing machine presser foot is connected on a presser bar (400) of a sewing machine, and comprises a pressing block (110) connected with the presser bar (400) and used for applying a pressure to a wire ring casing (200). One end of the pressing block (110) is provided with a left pressing claw (120) and a right pressing claw (130) located at both sides of the end. An arch-shaped limiting slot (111) capable of wrapping half of the wire ring casing (200) and having a limiting function is provided at the bottom surface of the pressing block (110) and located between the left pressing claw (120) and the right pressing claw (130) in a horizontal space. The sewing machine presser foot resolves the problem that a conventional planar presser foot cannot well match a wire ring casing provided with a core wire therein, such that a sewing deviation phenomenon will not occur in the sewn wire ring casing, thereby improving production efficiency.

Description

Sewing machine presser foot suitable for sewing underwear steel ring sleeve

Technical field

The patent relates to the technical field of sewing machines, and in particular to a sewing machine presser foot suitable for sewing a steel ferrule of an underwear.

Background technique

Women's underwear has a negligible effect on the appearance and health of women. The steel ring under the underwear cup also supports and protects the breast. Because the steel ring material cannot be sewn together with other parts of the underwear, the industry The underwear rim sleeve is designed to make the steel ferrule of the underwear and the other parts of the underwear into one piece, and then insert the steel ring into the underwear rim sleeve, thus reducing the manufacturing process and time of the steel ring placed on the underwear, and the steel ring sleeve It cushions the discomfort of the hard material of the steel ring to the skin, and to some extent eliminates the pressure of the steel ring.

Although the steel ring sleeve has the above advantages, since the steel ring sleeve is easily crushed during the sewing process, the steel ring sleeve is flat, and the steel ring is inserted into the steel ring sleeve, which may cause the steel ring to be blocked when inserted. Repeat the insertion to insert the steel ring. During repeated insertions, the hard end of the rim may leave wrinkles or holes in the surface of the ferrule. Moreover, when the steel ring is inserted into the steel ring sleeve, the steel ring sleeve is tight and has no fluffiness. The formation of wrinkles or holes and the tightness of the steel ring cover not only affect the aesthetics of the underwear, but also affect the comfort of women wearing underwear, and the improvement of the steel ring cover is particularly necessary.

In view of the above problems, the applicant has improved a new type of steel ring sleeve, see the disclosure of the invention patent No. 201510763145.1, which comprises a hollow sleeve made of cloth, which is accommodated in the hollow sleeve. The hollow portion of the steel ring further includes a core wire inserted in the hollow portion, and the core wire slides relative to the hollow sleeve body. The patent solves the problem of resistance when the steel ring is inserted into the flat underwear steel ring sleeve, so that the steel ring inserted into the steel ring sleeve during the manufacturing process may leave wrinkles, holes and tightness of the steel ring sleeve on the surface of the steel ring cover. improve. However, since the core wire is built in the steel ring sleeve, the entire steel ring sleeve is expanded, and the traditional sewing machine presser foot and the cloth contact surface are flat and smooth. When the steel ring cover and the underwear are sewn, the presser foot cannot be effective. The ferrule is pressed tightly, so that the rutting phenomenon is extremely prone to occur and the production efficiency is lowered. Therefore, it is necessary to improve the sewing machine presser foot in the prior art.

Summary of the invention

In view of this, the purpose of the patent is to overcome the deficiencies of the prior art, and to provide a sewing machine presser foot which is not easy to be biased and has high production efficiency and is suitable for sewing a steel undergarment.

In order to solve the above technical problems, the patent is implemented by the following scheme:

A sewing machine presser foot suitable for sewing an underwear steel ferrule is attached to a press bar of a sewing machine, comprising a pressure block connected to the pressure bar for applying pressure to the steel ring sleeve, one end of the pressure block being provided at the end portion a left side pressing claw and a right side pressing claw on both sides, wherein the bottom surface of the pressing block is provided with an arc-shaped limiting groove which can form a semi-wrapping and a limiting action on the steel ring sleeve, and the arched limiting groove is The horizontal space is between the left and right pressure jaws.

The steel ring sleeve expands after being placed into the core wire. When the seam is sewn, the contact area between the conventional flat presser foot and the steel ring sleeve is small, and the steel ring sleeve cannot be effectively pressed, so that the rutting is extremely prone to occur. phenomenon. In this patent, the arch-shaped limiting groove is arranged on the bottom surface of the pressing block, and the arch-shaped limiting groove realizes the semi-wrapping of the steel ring sleeve, so that the relative position of the steel ring sleeve and the pressing foot can be maintained during the sewing process to ensure no There will be a phenomenon of rutting. In addition, since the arched limit groove is arched, when the pressure block is pressed down the steel ring sleeve, the steel ring sleeve is not flattened, which facilitates the extraction of the subsequent core wire.

A sewing machine machine is formed between the left pressing jaw and the right pressing jaw to realize a sewing space for the steel ring sleeve, that is, the needle is sewn at both sides of the steel ring sleeve at the space. Due to the large space here, it is convenient to realize the sewing of the steel ring sleeve without causing the needle to collide with the left and right pressure jaws. In addition, even in such a large space, since the portion of the steel ring that is sewn here is in close contact with the portion to be pressed by the pressing block, and the left and right pressing jaws also prevent the deviation of the steel ring sleeve. The corresponding underwear is pressed and pressed, so that even if the steel ring sleeve at the sewing position is not pressed, the phenomenon of offset rarely occurs.

The end face of the pressing block provided with the left side pressing claw and the right side pressing claw is further provided with an intermediate pressing claw, and the arched limiting groove on the pressing block extends to the intermediate pressing claw, the intermediate pressing claw and the left pressing jaw and the right A gap is formed between the side pressing claws opposite to the edge of the steel ring sleeve.

At the moment of sewing, due to the pulling action of the needle and the suture, the rim sleeve between the left and right knees may be bounced or shaken, resulting in rutting, especially high strength. This is not allowed under high-efficiency, high-volume production. Therefore, in order to further avoid the occurrence of rutting of the rim sleeve between the left and right pawls without being pressed, the patent passes between the left and right knees. The intermediate pressure claw is disposed, and the intermediate pressure claw is provided with an arched limit groove extending from the pressure block. Therefore, the intermediate pressure claw presses the steel ring sleeve between the left pressure claw and the right pressure claw to press the limit. Further preventing the position of the steel ferrule here from shifting. And because of the middle There is a gap between the pressure claw and the left and right pressure claws, so the needle can be sewn to both sides of the steel sleeve through two slits, and the two needles can be used for sewing at the same time. Through this presser foot, the sewing efficiency can be greatly improved.

The width of the intermediate jaw is less than the width of the arcuate limiting groove on the pressure block.

Under the premise of ensuring that the intermediate jaw can form a pressing limit on the steel ring sleeve, the width of the intermediate pressure claw is reduced, so that the gap between the intermediate pressure claw and the left and right pressure claws has a sufficient width to achieve The machine is designed to prevent the needle from colliding with the left and right jaws, the middle jaw and the right jaw, and the needle is broken.

The side of the left and right pressure claws opposite to the middle pressure claw is provided with a curved surface matching the steel ring sleeve, and the left side pressure claw, the middle pressure claw and the right pressure claw cooperate to form a pair of steel sleeves Space for the limit.

On the premise of reducing the width of the intermediate jaws, although the intermediate jaws also have arched limit slots, the intermediate jaws can only cover a small portion of the top surface of the ferrule; the left and right jaws are rims It prevents the offset, but if it is flat like a traditional presser foot, its preventive effect is low. In order to solve this problem, the left side jaw and the right side jaw are more closely fitted to the steel sleeve by forming the opposite side of the left and right jaws into a curved surface matching the rim sleeve. Therefore, it is more efficient to prevent the rim sleeve from jumping during the sewing process.

The left side presser, the intermediate presser, and the right presser are respectively constituted by a flat portion connected to the end of the press block and an upturned portion connected to the flat portion.

The ends of the left, middle and right jaws are upturned to prevent the fabric from hanging on the jaws during movement, but if the left, middle and right jaws In the part connected with the pressure block, the upward adjustment is started. Under the premise that the pressure block forms a pressing limit on the steel ring sleeve, the left side pressure claw, the middle pressure claw and the right pressure claw and the steel ring sleeve exist at this time. There is a certain gap, so at the moment when the steel ring sleeve is sewn, the restraining space formed between the left pressing jaw, the intermediate pressing jaw and the right pressing jaw is weakened by the pressing limit of the steel ring sleeve. Therefore, in the present patent, the left side pressing claw, the intermediate pressing claw and the right pressing jaw are formed by connecting the flat portion and the upper pressing portion, and there is no gap between the curved space formed by the flat portion and the steel ring sleeve, and When the needle is sewn in the gap between the flat portion of the middle jaw and the flat portion of the left jaw and the flat portion of the right jaw, the steel sleeve is more stable and the sewing effect is better.

The other end of the compact is provided with an upwardly curved upper bend.

One end of the conventional sewing machine presser foot is upturned, but the other end is not treated at all, and the corner structure existing at the end is easy to scratch or deform the laundry during the operation of the person. Therefore, the end portion of the patent is provided with an upper curved portion, which can effectively prevent this phenomenon from occurring.

The pressure block, the left pressing jaw, the intermediate pressing jaw, the right pressing jaw and the upper curved portion are integrally formed.

The integrally formed presser foot is used with high strength under the action of the pressing rod, and is not easy to be aging and loosened, and it is also easier to process the presser foot through the existing process, and even if damage occurs, it is easy to replace the entire presser foot.

The pressing block is provided with a convex portion detachably connected to the pressing rod. The raised portion is disposed on the pressing block, and the force exerted by the pressing rod can be more uniformly applied to the pressing block, and the detachable connection can be realized by a prior art, such as a screw connection.

Compared with the prior art, the patent has the following beneficial effects: the patent adopts an arch-shaped limiting groove on the pressure block to avoid the situation that the steel ring sleeve is shaken during the sewing process, and the phenomenon of rutting is prevented. Moreover, the cooperation of the left pressing jaw, the intermediate pressing jaw and the right pressing jaw further ensures the accuracy of the suture during the sewing process, and can effectively prevent the needle from colliding with the pressing foot.

DRAWINGS

Figure 1 is a schematic view of a prior art sewing;

Figure 2 is a schematic view showing the structure of the presser foot of the patent;

Figure 3 is a schematic view of the sewing of the present patent;

Figure 4 is a schematic view of the underside of the presser foot.

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present patent, the patent will be further described below in conjunction with the accompanying drawings.

Example

FIG. 1 is a schematic view of a prior art presser foot 100 for sewing a built-in core wire 300 steel ring sleeve. The presser foot 100 is flat and cannot be well matched with the steel ring cover 200, so that the needle 500 is sewn to the steel ring cover 200. During the process, the rim sleeve 200 appears to cause rutting.

As shown in FIGS. 2 to 4, a sewing machine presser foot suitable for sewing a steel undergarment is attached to a press bar 400 of a sewing machine, and includes a press block 110 connected to the press bar 400 for applying pressure to the steel ring cover 200. One end of the pressing block 110 is provided with a left side pressing claw 120 and a right side pressing claw 130 on both sides of the end portion, and the bottom surface of the pressing block 110 is provided with a half-wrapping and limiting position for the steel ring sleeve 200. The arcuate limiting groove 111 is applied, and the arched limiting groove 111 is located between the left pressing jaw 120 and the right pressing jaw 130 in a horizontal space.

The end surface of the pressing block 110 provided with the left side pressing claw 120 and the right side pressing claw 130 is further provided with an intermediate pressing claw 140, and the width of the intermediate pressing claw 140 is smaller than that of the arched limiting groove 111 on the pressing block 110. Width, and the arcuate limiting groove 111 on the pressing block 110 extends to the intermediate pressing claw 140, and the intermediate pressing claw 140 is disposed between the left pressing jaw 120 and the right pressing jaw 130 opposite to the edge of the steel sleeve 200 The gap.

As shown in FIG. 2, the left side pressing claw 120 and the right side pressing claw 130 are opposite to the intermediate pressing claw 140, and are provided with a curved surface matching the steel ring cover 200, the left side pressing claw 120 and the intermediate pressing claw. The 140 and the right jaw 130 cooperate to form a space for limiting the ferrule sleeve 200.

Further, the left side pressing claw 120, the intermediate pressing claw 140 and the right side pressing claw 130 are respectively connected by a flat portion 122 connected to an end portion of the pressing block 110, a flat portion 142, a flat portion 132, and an upper portion connected to the flat portion. The warping portion 121, the upturned portion 131, and the upturned portion 141 are formed. The other end of the pressing block 110 is provided with an upwardly bent upper portion 150. The pressure block 110, the left side pressing claw 120, the intermediate pressure claw 140, the right side pressing claw 130, and the upper curved portion 150 are integrally formed. The pressing block 110 is provided with a boss portion 160 which is detachably connected to the pressing rod 400.

The above embodiments are only specific implementations of the present patent, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the patent. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit of the invention, and such obvious alternatives are within the scope of the patent.

Claims

A sewing machine presser foot suitable for sewing an underwear steel ferrule is attached to a press bar of a sewing machine, comprising a pressure block connected to the pressure bar for applying pressure to the steel ring sleeve, one end of the pressure block being provided at the end portion a left side pressing claw and a right side pressing claw on both sides, wherein the bottom surface of the pressing block is provided with an arc-shaped limiting groove which can form a semi-wrapping and restricting action on the steel ring sleeve, and the arch shape The limit groove is located between the left and right pressure jaws in a horizontal space.
The sewing machine presser foot suitable for sewing a steel undergarment according to claim 1, wherein the end face of the pressing block provided with the left side pressing claw and the right side pressing claw is further provided with an intermediate pressing claw, and the pressing block is The arched limiting groove extends to the intermediate jaw, and the intermediate jaw is provided with a slit opposite to the edge of the steel ring between the left and right pressing jaws.
A sewing machine presser foot suitable for sewing a steel undergarment according to claim 2, wherein the intermediate jaw has a width smaller than a width of the arcuate limiting groove on the pressing block.
A sewing machine presser foot suitable for sewing a steel undergarment according to claim 3, wherein the side of the left and right pressure claws opposite to the intermediate pressure claw is provided to match the steel ring sleeve. The curved surface, the left pressing jaw, the intermediate pressing jaw and the right pressing jaw cooperate to form a space for limiting the steel ring sleeve.
A sewing machine presser foot suitable for sewing an undergarment steel ferrule according to any one of claims 2 to 4, wherein the left side pressing claw, the intermediate pressing jaw and the right side pressing claw are respectively formed by the pressing block end The flat portion connected to the portion and the upper portion connected to the flat portion are formed.
A sewing machine presser foot suitable for sewing a steel undergarment according to claim 5, wherein the other end of the pressing block is provided with an upwardly curved upper bent portion.
A sewing machine presser foot suitable for sewing a steel undergarment according to claim 6, wherein the press block, the left presser, the intermediate presser, the right presser, and the upper bent portion are integrally formed.
A sewing machine presser foot suitable for sewing a steel undergarment according to claim 5, wherein said press block is provided with a boss portion detachably coupled to the press bar.