WO2021107459A1

WO2021107459A1 - Sewing device

Info

Publication number: WO2021107459A1
Application number: PCT/KR2020/015728
Authority: WO
Inventors: 안신엽; 임정묵
Original assignee: 안신엽; 코오롱글로텍주식회사
Priority date: 2019-11-26
Filing date: 2020-11-11
Publication date: 2021-06-03
Also published as: CN113179649A; KR102098702B1; CN113179649B

Abstract

The present invention relates to a sewing device characterized by comprising: a needle part located in a head part of a sewing machine body; a hole part which is formed in a workbench coupled to a lower part of the sewing machine body and through which the needle part passes; a groove part which is located on a side of the hole part and recessed in the vertical direction of the workbench; and a cutting part which is located in the groove part and cuts a lower-layer fabric among multiple layers of fabric sewn by the needle part. Such characteristics solve the problem of the prior art in which the finish quality of a sheet is poor when multiple layers of fabric are cut simultaneously, and thus the sewing device has the advantage of making it possible to cut only the lower-layer fabric among the multiple layers of fabric. Accordingly, the lengths of the cut layers of fabric are different, and thus the finishing treatment can be performed neatly.

Description

sewing machine

The present invention relates to a sewing machine device, and more particularly, includes a cutting part capable of cutting the fabric as well as the sewing machine part with respect to a multi-stage fabric used for an automobile seat, but for a neat finishing treatment, the lower fabric of the multi-stage fabric It is characterized in that the blade part rotates in the width direction so as to cut the bay, and a guide part for preventing the fabric other than the lower fabric from being cut is formed.

In sewing using a fabric (a member to be sewn), traditionally, the rim of the fabric to be sewn is finished with the thread by inserting a thread into the ear of the needle using a needle to finally make clothes, but with the development of the machinery industry, A sewing machine, a dedicated sewing machine, has been developed and is being used in many fields. A sewing machine (sewing machine) is a device that mechanically moves the fabric while making stitches on the fabric, and is widely used in industrial sites and at home.

Conventionally, the sewing machine has a sewing machine body and a workbench is mounted on the lower part of the sewing machine body. At this time, the needle plate is installed on the workbench. Corresponding to the needle plate, a needle part having a needle is mounted on the main body of the sewing machine, and a presser foot supporting the fabric to be machined is mounted on the side thereof. A hole through which the needle passes is formed in the needle plate, and the saw teeth are exposed at the edge to transport the fabric to be machined. In addition, a drive device for driving the bobbin case and the teeth is installed in the lower part of the workbench. At this time, when the needle unit reciprocates in the vertical direction, the user moves the fabric in a desired direction to sew the fabric. And when the sewing of the fabric is finished, the user cuts the fabric in the vicinity of the sewing end point for finishing the fabric.

Accordingly, in order to reduce the burden of the user having to cut the fabric, a sewing machine having a cutting device for cutting the fabric has been required. This is a well-known device, and the following Patent Document 1 discloses a configuration of a sewing machine that enables the cutting device of the fabric to move vertically with respect to the rotating body and is rotatably provided around the axis of the needle part together with the rotating body.

In particular, in the process of sewing and cutting the fabric used for the car seat, there are cases where it is necessary to machine and cut the multi-stage fabric for the finishing treatment of the car seat. In this case, multi-stage means sequentially stacking a plurality of fabrics.

However, in the case of a sewing machine having a conventional cutting device, a cutter cuts the fabric by reciprocating up and down in the vertical direction, so that the multi-stage fabric is cut at the same time. Therefore, the cut length of the plurality of fabrics becomes the same, and thus, there is a problem in that the finish shown when the fabric is turned over to turn it into an actual product becomes messy or the finish is not correct.

In order to achieve the object of the present invention, a sewing machine apparatus according to an embodiment of the present invention includes: a needle part positioned on a head of a sewing machine body; a hole formed on a workbench coupled to a lower portion of the sewing machine body and through which the needle part passes; , The groove portion is located on the side of the hole, recessed in the vertical direction of the work table; and a cutting part located in the groove part to cut the lower fabric among the multi-stage fabrics sewn by the needle part.

In addition, the cutting part of the sewing machine device according to an embodiment of the present invention comprises: a motor; a rotating shaft connected to the motor to rotate; and a blade portion positioned at an end of the rotation shaft.

In addition, the blade part of the sewing machine according to an embodiment of the present invention is characterized in that a part protrudes in the vertical direction with respect to the surface of the work table.

In addition, the sewing machine device according to an embodiment of the present invention is inserted into the upper portion of the lower fabric to be cut, and a guide part for preventing the fabric other than the lower fabric being cut from being cut; it further includes.

In addition, the guide part of the sewing machine apparatus according to an embodiment of the present invention is formed to extend in the width direction, the shielding part located on the upper part of the cut lower fabric; and a support part extending perpendicular to the shielding part and coupled to the head part.

In addition, the blade part of the sewing machine according to an embodiment of the present invention is characterized in that it rotates in the width direction.

In addition, the guide part of the sewing machine device according to an embodiment of the present invention is characterized in that it is detachable.

According to the present invention, in the process of sewing and cutting the fabric used for the automobile seat, when cutting the multi-stage fabric at the same time, the problem of poor finishing quality of the sheet is solved, and only the lower fabric among the multi-stage fabrics can be cut. There is this. Due to this, the length of the cut fabric is different, and it is characterized in that it can be finished neatly.

1 is a view showing a sewing machine according to an embodiment of the present invention.

Figure 2 is a detailed view showing the cut portion of the sewing machine according to an embodiment of the present invention.

3 is a view showing in detail a cut portion, a groove portion and a guide portion of the sewing machine according to an embodiment of the present invention.

Figure 4 shows a side view of the sewing machine according to an embodiment of the present invention.

5 is a view showing the appearance of a two-stage fabric used in a car seat completed by the sewing machine and cutting process of the sewing machine according to an embodiment of the present invention.

Hereinafter, with reference to the drawings of the present invention will be described in detail. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those of ordinary skill in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And, in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numbers refer to like elements throughout.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of description.

The terminology used herein is for the purpose of describing the embodiments, and thus is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprise" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Definitions of terms used below are as follows. The "longitudinal direction" is the x-axis direction with reference to FIG. 1, and the "width direction" is the y-axis direction with respect to FIG. 1 . In addition, the "vertical direction" is the z-axis direction perpendicular|vertical to the longitudinal direction and the width direction at the same time. In addition, "inward direction" means a side relatively close to the center of the same member. By "outward direction" is meant the opposite side of the inner side. "Inward direction" and "outward direction" refer to the xy plane. "Upper surface" and "lower surface" are based on the xy plane.

1 is a view showing a sewing machine apparatus according to an embodiment of the present invention. Hereinafter, the configuration and effects of the sewing machine apparatus according to the present invention will be described with reference to FIG. 1 .

A typical sewing machine has a machine body and a workbench is mounted on the lower part of the machine body. At this time, the needle plate is installed on the workbench. Corresponding to the needle plate, a needle part having a needle is mounted on the main body of the sewing machine, and a presser foot supporting the fabric to be machined is mounted on the side thereof. A hole through which the needle passes is formed in the needle plate, and the saw teeth are exposed at the edge to transport the fabric to be machined. In addition, a drive device for driving the bobbin case and the teeth is installed in the lower part of the workbench.

The sewing machine according to the present invention consists of a sewing machine main body 10 and a workbench 20 coupled to the lower portion of the sewing machine main body 10 like a conventional sewing machine apparatus. The sewing machine main body 10 is formed to extend in the longitudinal direction, and is composed of a head portion 11 and a main body portion, and the end of the main body portion is connected to the work table 20 . In addition, the sewing machine main body 10 is provided with a needle portion 30 and a guide portion 300, and the work table 20 has a hole portion 40 through which the needle portion 30 passes, a cut portion 100 and a vertically recessed portion. A groove 200 is provided.

The needle part 30 is located in the head part 11 of the main body 10 of the sewing machine, and the hole part 40 is formed in the work table 20 . Accordingly, the needle unit 30 passes through the hole 40 while reciprocating in the vertical direction, and the user can sew the fabric by moving the fabric in a desired direction.

2 is a detailed view of the cutting unit 100 of the sewing machine according to an embodiment of the present invention. Hereinafter, the configuration and effects of the cutting unit 100 according to the present invention will be described with reference to FIG. 2 . The cutting unit 100 includes a motor unit 110 , a rotating shaft 120 , and a blade unit 130 .

The motor unit 110 provides power for the rotation shaft 120 and the blade unit 130 to rotate. The rotating shaft 120 is formed to extend in the longitudinal direction, and one end is connected to the motor unit 110 and rotates by the motor unit 110 . The blade unit 130 is positioned at the other end of the rotation shaft 120 , and is vertically coupled to the rotation shaft 120 . Accordingly, the blade part 130 serves to cut the lower fabric 2 in contact with the blade part 130 among the multi-stage fabrics sewn by the needle part 30 while rotating.

In this case, the rotating shaft 120 may be rotated by, for example, the electric power of the motor unit 110 , but as another example, the rotating shaft 120 may be rotated by the rotational power of the timing belt.

In addition, as another example, the motor unit 110 is coupled to a frame (not shown), and the frame can be moved in the vertical direction by hydraulic pressure, so that when the blade unit 130 is not used, it descends to prevent an accident. can be prevented

At this time, it is preferable that the blade unit 130 rotates in the width direction. Specifically, it is vertically coupled to the rotating shaft 120 formed extending in the longitudinal direction, and since a long straight sewing machine is required for the finishing treatment of the fabric used for the automobile seat, the fabric is moved in the width direction without limitation of the moving distance. is moved, and the blade unit 130 is also rotated in the same width direction in which the fabric moves. Accordingly, it is possible to cut in the same shape with a predetermined distance from the missing part.

The cutting part of the conventional sewing machine cuts the fabric by reciprocating in the vertical direction or rotating according to vertical movement. Accordingly, in the case of cutting multi-stage fabrics, there was a problem of incorrect finishing, such as the finished fabric being turned over to turn it into a real product, as it had no choice but to cut all of the multi-stage fabrics, and the finish shown when used was messy.

In contrast, the cutting unit 100 of the sewing machine of the present invention has a blade unit 130 rotating in the width direction, so that it is possible to separate and cut only the lower fabric 2 without cutting all of the multi-stage fabric. do it with That is, the blade unit 130 is rotated in the same direction, not in the direction perpendicular to the direction in which the fabric moves, and the position of the blade unit 130 itself is fixed, so the vertical direction of the fabric in which the blade unit 130 abuts. By selecting the height of the fabric and the number of fabrics, the height at which the fabric is cut can be adjusted.

3 is a view showing in detail the cutting part 100, the groove part 200, and the guide part 300 of the sewing machine apparatus according to an embodiment of the present invention. Figure 4 shows a side view of the sewing machine according to an embodiment of the present invention. Hereinafter, the configuration and effects of the cut part 100 , the groove part 200 , and the guide part 300 will be described with reference to FIGS. 3 and 4 .

The groove part 200 is located on the side of the hole part 40 located on the work table 20 . Although the groove part 200 is shown on the inner side of the hole part 40 in FIG. 3, it is not limited to this. The groove part 200 is a shape in which the work table 20 is depressed in the vertical direction, and the cut part 100 is located in the groove part 200 as will be described later.

Specifically, according to an embodiment of the present invention, a portion of the rotation shaft 120 coupled to the blade portion 130 and the blade portion 130 of the cutting portion 100 is located inside the groove portion 200 to the outside. The motor unit 110 and a portion of the rotation shaft 120 connected to the motor unit 110 are not exposed to the outside because the upper portion is covered by the work table 20 . However, the present invention is not limited to the above structure, and according to various embodiments, the motor unit 110 may be located inside the groove 200 , and accordingly, the motor unit 110 may also be exposed to the outside.

At this time, the blade unit 130 is characterized in that a part length (d) is protruded in the vertical direction with respect to the upper surface of the work table (20). Specifically, the blade part 130 is located inside the groove part 200 , but an upper portion of the blade part 130 protrudes from the upper surface of the work table 20 . Accordingly, the fabric located on the surface of the work table 20 can be easily cut by the partially protruding blade unit 130 .

The blade unit 130 according to another embodiment of the present invention can adjust the height d protruding in the vertical direction with respect to the upper surface of the work table 20 . At this time, it is characterized in that it is provided with a pair of height adjustment devices on both sides of the bottom surface of the motor unit (110). Specifically, the height adjustment device is installed as a pair to face both sides of the motor unit (110). The height adjusting device is provided with a first adjusting unit that repeats protrusion and depression so as to be inclined up and down on one side, and a second adjusting unit formed on the other side to correspond to the first adjusting unit. Accordingly, the height of the motor unit may be adjusted along a path between the first adjustment unit and the second adjustment unit. Accordingly, when the height is adjusted to be high by the height adjusting device, the height of the rotating shaft 120 connected to the motor unit 110 and the blade unit 130 coupled to the rotating shaft 120 are also increased. Accordingly, the height (d) at which the blade unit 130 protrudes in the vertical direction is increased based on the surface of the work table 20 , and the height of the fabric that can be cut by the blade unit 130 is also increased.

Accordingly, the user may adjust the height of the blade unit 130 by the height adjusting device in consideration of the height or number of fabrics to be cut.

The guide part 300 has a 'L' shape, and includes a shielding part 310 and a support part 320 . The shielding part 310 is formed extending in the width direction, and is located in the upper part of the lower fabric 2 to be cut and the lower part of the fabric 1 other than the lower fabric to be cut. The support part 320 is formed to extend vertically from one end of the shielding part 310 and the upper part is coupled to the sewing machine body 10 . 3 and 4, the support part 320 is expressed to be coupled with the head part 11 of the sewing machine body 10, but is not limited thereto, and the position where the support part 320 is coupled is the sewing machine body 10, and the sewing machine machine It is not limited to the head portion 11 of the main body 10 .

At this time, it is preferable that the other end of the shielding part 310 is in a position where it can come into contact with the blade part 130 . Accordingly, in the guide part 300, the lower fabric 2 is cut by the blade part 130, and the fabric 1 other than the lower fabric is prevented from touching the blade part 130, so that the fabric 1 other than the lower fabric is cut. This can be prevented from being cut.

It is preferable that the guide part 300 is detachable from the machine body 10 . Therefore, it can be detached or attached in consideration of the number and thickness of the fabric to be cut according to the needs of the user.

Specifically, according to an embodiment of the present invention, the sewing machine main body 10 has the same rectangular shape as the upper surface of the support 310, and is provided with a recessed groove in the longitudinal direction. Accordingly, when the support part 310 is inserted into the groove, the support part 310 may be fitted. In addition, by attaching an N-pole or S-pole magnetic body to the upper surface of the recess, and an S-pole or N-pole opposite magnetic body to the upper surface of the support part 310 , fixing force can be strengthened. On the other hand, when the guide part 300 is to be detached, it can be separated from the groove by pulling the inserted guide part 300 downward.

5 is a view showing a multi-stage fabric used in a car seat completed by the sewing machine and cutting process of the sewing machine according to the present invention. Referring to FIG. 5 , it can be seen that the multi-stage fabric is sewn simultaneously and only the lower fabric is cut short.

To this end, the user adjusts the height (d) protruding from the surface of the work bench 20 of the blade unit 130 to the height of the lower fabric 2 , and sets the shielding part 320 of the guide unit 300 to the lower fabric 2 . Insert into the lower part of the fabric (1) other than the upper and lower fabric of the. Thereafter, the sewing machine is operated, and the user moves the multi-stage fabric at a constant speed in the width direction.

In this way, when the sewing machine and cutting process according to the present invention are performed, it can be seen that the multi-stage fabric is finished neatly than a sheet cut to the same length, and thus the finishing quality is improved.

Although the detailed description of the present invention described has been described with reference to the preferred embodiment of the present invention, those skilled in the art or those having ordinary knowledge in the art will appreciate the spirit and spirit of the present invention described in the claims to be described later It will be understood that various modifications and variations of the present invention can be made without departing from the technical scope. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

Claims

a needle portion located in the head portion of the sewing machine body;

a hole formed in a work bench coupled to a lower portion of the sewing machine body and through which the needle part passes;

a groove portion positioned on the side of the hole portion and recessed in the vertical direction of the work table; and

It is located in the groove portion, including a cutting portion for cutting the lower fabric of the multi-stage fabric sewn by the needle part;

sewing machine.
According to claim 1,

the cut part

motor unit;

a rotating shaft connected to the motor to rotate; and

having a blade portion positioned at an end of the rotation shaft

sewing machine.
3. The method of claim 2,

The blade part is partially protruded in the vertical direction with respect to the surface of the work table.

sewing machine.
4. The method of claim 3,

A guide part for preventing the fabric other than the lower fabric from being cut by being inserted into the upper part of the lower fabric to be cut; further comprising

sewing machine.
5. The method of claim 4,

the guide part

a shielding part extending in the width direction and positioned on the upper part of the lower fabric to be cut; and

and a support part extending perpendicular to the shielding part and coupled to the head part;

sewing machine.
6. The method of claim 5,

The blade part rotates in the width direction

sewing machine.
7. The method of claim 6,

The guide part is detachable

sewing machine.