KR102542545B1 - Macro-mini module for sutomatic sewing machine, automatic sewing machine having the same and automatic sewing method using the same - Google Patents

Abstract

Disclosed are: a macro-mini module for an automatic sewing machine, which is attached to an automatic sewing machine to assist with an operation of the automatic sewing machine so as to enable precise sewing and reduce a defect rate by maintaining a constant sewing distance through vision feedback control; an automatic sewing machine having the macro-mini module; and an automatic sewing method using the same. The macro-mini module for an automatic sewing machine includes: a vision feedback system for recognizing a seam line of a fabric to be sewed and generating a top stitch sewing path spaced a predetermined distance from the seam line; and a mini XY-plotter module which is attached to a macro XY-plotter of the automatic sewing machine, receives a top stitch sewing path signal from the vision feedback system, and moves to a position corresponding to the top stitch sewing path.

Description

MACRO-MINI MODULE FOR SUTOMATIC SEWING MACHINE, AUTOMATIC SEWING MACHINE HAVING THE SAME AND AUTOMATIC SEWING METHOD USING THE SAME}

The present invention relates to a macro-mini module for an automatic sewing machine, an automatic sewing machine having the same, and an automatic sewing method using the same, and more particularly, to enable precise sewing and maintain a constant sewing interval to improve the defective rate. It relates to a macro-mini module for a sewing machine, an automatic sewing machine having the same, and an automatic sewing method using the same.

The domestic apparel market has a larger market size than computers and home appliances, and has grown continuously from 2017 to 2019, before the spread of Corona. Due to the nature of the fabric and the labor-intensive process, the automation rate of the process is low compared to other industries, and commercial automatic sewing machines currently used in clothing manufacturing factories have limitations in performance, so only a few of many sewing jobs are used.

An automatic sewing machine is a device that automatically performs sewing according to a 2D pattern input into the system. In order to use an automatic sewing machine, a fabric to be sewn, a suitable pattern, and a sewing template that presses the fabric flat during sewing are required. Here, the sewing template is composed of a lower plate for supporting the fabric and an upper plate for pressing the fabric, and a slit is formed in the lower plate and the upper plate to correspond to the sewing line.

The operator places the fabric between the sewing templates and then places the sewing template in the automatic sewing machine to operate the automatic sewing machine. When sewing is completed, the sewing template is removed from the automatic sewing machine and the sewn fabric is moved.

Among the processes performed in a clothing manufacturing factory, there is a process of overlapping and pre-sewing the ends of two fabrics and then sewing top stitches while maintaining a certain distance from the formed seam line.

Since the automatic sewing machine currently used in the factory sews the fabric only along the input pattern path, if errors are accumulated by the operator in the entire process of top stitch sewing, the sewing interval from the seam line is not constant, resulting in defects.

Therefore, it is currently impossible to perform a sewing operation while maintaining a constant sewing interval with an automatic sewing machine.

Korean Patent Registration No. 10-2322546 (2021. 11. 09. Announcement) (sewing stitching defect detection method and system)

Therefore, the technical problem of the present invention is focused on this point, and the object of the present invention is to enable precise sewing by being attached to an automatic sewing machine to assist the operation of the automatic sewing machine, and to maintain a constant sewing interval through vision feedback control. It is to provide a macro-mini module for an automatic sewing machine to improve the defect rate.

Another object of the present invention is to provide an automatic sewing machine having the above macro-mini module for the automatic sewing machine.

Another object of the present invention is to provide an automatic sewing method using the above automatic sewing machine.

In order to realize the object of the present invention described above, the macro-mini module for an automatic sewing machine according to an embodiment recognizes a seam line of a fabric to be sewn and sets a top stitch sewing path spaced apart from the seam line by a predetermined distance. a vision feedback system that generates; and a mini XY plotter module attached to the macro XY plotter of the automatic sewing machine, receiving an upper needle sewing path signal from the vision feedback system and moving to a position corresponding to the upper needle sewing path.

In one embodiment, the vision feedback system may include a camera installed in the vicinity of the sewing unit of the automatic sewing machine to look at the sewing unit and photographing the fabric during operation of the automatic sewing machine; and a computer generating an upper stitch sewing path by receiving an image captured by the camera.

In one embodiment, the vision feedback system may further include a lighting unit providing light for photographing by the camera.

In one embodiment, the mini XY plotter module, one side is connected to the macro XY plotter, the other side is connected to the template holder for holding the sewing template mini XY plotter; and receiving an upper needle sewing path and an encoder signal of the automatic sewing machine from the vision feedback system, so that the needle of the sewing unit of the automatic sewing machine passes through the fabric and the operation unit of the automatic sewing machine operates. It may include a controller for moving the sewing template to a position corresponding to the upper needle sewing path through the XY plotter.

In one embodiment, the mini XY plotter, X-axis driving unit for microscopically moving the template holder connected to the sewing template for receiving the fabric for sewing in the X-axis direction; and a Y-axis driving unit for microscopically moving the sewing template in the Y-axis direction.

In one embodiment, the X-axis driving unit may include a first stepping motor disposed such that a motor shaft is parallel to a Y-axis direction; and a first lead screw having one end connected to the motor shaft of the first stepping motor and the other end connected to the template holder to move the template holder in the Y-axis direction according to driving of the first stepping motor. there is.

In one embodiment, the X-axis driving unit may further include a first anti-backlash nut (Anti-Backlash Nuts) to prevent backlash generated when the first lead screw moves forward and backward.

In one embodiment, the X-axis driving unit may further include a first proxy sensor for establishing an X-axis origin reference point of the template holder.

In one embodiment, the Y-axis driving unit may include a second stepping motor disposed such that a motor shaft is parallel to the X-axis direction; A timing belt including a first timing gear connected to a motor shaft of the second stepping motor, a second timing gear spaced apart from the first timing gear, and a timing belt connecting the first timing gear and the second timing gear. assembly; and one end connected to the second timing gear and the other end connected to the template holder to move the template holder in the X-axis direction based on rotational force transmitted through the timing belt according to driving of the second stepping motor. A second lead screw may be further included.

In one embodiment, the Y-axis driving unit may further include a second anti-backlash nut (Anti-Backlash Nuts) to prevent backlash generated when the second lead screw moves forward and backward.

In one embodiment, the Y-axis driving unit may further include a second proxy sensor for establishing a reference point of the Y-axis origin of the template holder.

An automatic sewing machine according to an embodiment in order to realize another object of the present invention described above, the worktable portion supported by the frame portion; a sewing machine disposed on the work table; a sewing unit disposed at an end of the sewing machine and sewing the fabric exposed through a slit formed in a sewing template that flatly presses the fabric during sewing of the sewing machine; a macro XY plotter disposed on the work table and transferring the sewing template disposed on the work table in the X-axis direction and the Y-axis direction; a vision feedback system recognizing a seam line of the fabric exposed through the slit formed in the sewing template and generating a top stitch sewing path spaced apart from the seam line; and a mini XY plotter module attached to the macro XY plotter, receiving an upper needle sewing path signal from the vision feedback system and moving to a position corresponding to the upper needle sewing path.

In one embodiment, the automatic sewing machine may further include a touch-monitor disposed at an end of the sewing machine.

In one embodiment, the automatic sewing machine may further include an upper frame disposed in an end region of the sewing machine to cross the frame of the sewing machine and having an arch shape to cover the work table.

In one embodiment, the vision feedback system may include a camera installed in the vicinity of the sewing unit of the automatic sewing machine to look at the sewing unit and photographing the fabric during operation of the automatic sewing machine; and a computer receiving an image captured by the camera and generating an upper stitch sewing path, wherein the camera and the computer may be disposed on the upper frame.

In one embodiment, the vision feedback system may further include a lighting unit providing light for photographing by the camera, and the lighting unit may be disposed on the upper frame.

Automatic sewing method according to an embodiment in order to realize another object of the present invention described above, moving the sewing template through the macro XY plotter module; photographing the fabric exposed through the slit formed in the sewing template; Transmitting the photographed original image to a computer; recognizing the seam line of the fabric; generating a top stitch sewing path spaced apart from the recognized seam line by a predetermined distance; extracting an encoder signal from a motor of an automatic sewing machine; Transmitting the upper needle sewing path and encoder signal to a mini XY plotter module; and moving the sewing template through the mini XY plotter module.

According to the macro-mini module for an automatic sewing machine, an automatic sewing machine having the same, and an automatic sewing method using the same, it is attached to the macro XY plotter of the automatic sewing machine to assist the operation of the automatic sewing machine by the sewing operation error, thereby increasing the precision of the automatic sewing machine. By enabling sewing and recognizing the seam line of the fabric to be sewn and correcting errors in the sewing operation of the automatic sewing machine, it is possible to maintain a constant sewing interval and improve the defect rate.

1 is a block diagram schematically illustrating an automatic sewing machine having a macro-mini module for an automatic sewing machine according to an embodiment of the present invention.
2 is a perspective view for explaining an automatic sewing machine having a macro-mini module for an automatic sewing machine according to an embodiment of the present invention.
FIG. 3A is an image for explaining the vision feedback system shown in FIG. 2 . FIG. 3B is an image of the vision feedback system shown in FIG. 2 viewed from the side.
FIG. 4A is an image for explaining the mini XY plotter shown in FIG. 2 . Figure 4b is an image for explaining the X module of the mini XY plotter shown in Figure 4a. FIG. 4c is an image of the X module of the mini XY plotter shown in FIG. 4a viewed from above. FIG. 4d is an image for explaining the Y module of the mini XY plotter shown in FIG. 4a. Figure 4f is an image observed from the top of the Y module of the mini XY plotter shown in Figure 4a. FIG. 5 is an image for explaining that the template holder is attached to the mini XY plotter shown in FIG. 4a.
FIG. 6 is a plan view illustrating seam line recognition and a corresponding operation by the vision feedback system shown in FIG. 3A.
7 is a flowchart illustrating an automatic sewing method using an automatic sewing machine according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in more detail. Since the present invention may have various changes and various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a block diagram schematically illustrating an automatic sewing machine having a macro-mini module for an automatic sewing machine according to an embodiment of the present invention.

Referring to FIG. 1 , the automatic sewing system according to the present invention includes an automatic sewing machine 10 , a motor encoder 20 , a vision feedback system 30 and a mini XY plotter module 40 . In this specification, the vision feedback system 30 and the mini XY plotter module 40 define a macro-mini module for an automatic sewing machine. The macro-mini module for an automatic sewing machine is attached to the automatic sewing machine 10 in the form of a module and operates. After loading the template on which the fabric is arranged in the automatic sewing machine 10 and inputting a desired top stitch sewing pattern, the automatic sewing machine 10 and the macro-mini module for the automatic sewing machine are operated.

The vision feedback system 30 includes a camera (eg, a LiDAR camera) 32 and a computer 34 that processes images.

The camera 32 is installed near the sewing part of the automatic sewing machine 10 so as to look at the sewing part. While the automatic sewing machine 10 is operating, the camera 32 photographs the fabric and transmits the fabric image to the computer 34.

The computer 34 processes the fabric image to recognize the seam line of the fabric, and then creates an upper stitch sewing path spaced apart from the seam line by a predetermined interval. The created sewing path is transmitted through communication with the mini XY plotter module 40. In addition, the computer 34 generates an encoder signal from the motor of the automatic sewing machine 10 so that the controller 44 of the mini XY plotter module 40 can grasp the operation unit of the automatic sewing machine 10 and the operating state of the sewing unit. is extracted and transmitted to the mini XY plotter module 40.

The mini XY plotter module (40) includes a mini XY plotter (42) and a controller (44). The mini XY plotter 42 may include a stepping motor and lead screw to implement a two-axis planar motion. The resolution of the operation of the mini XY plotter 42 is determined by the resolution of the stepping motor and the lead of the lead screw.

The controller 44 receives the upper stitch sewing path and the encoder signal of the automatic sewing machine 10 from the computer 34 of the vision feedback system 30, and the time when the needle of the sewing part of the automatic sewing machine 10 passes through the fabric. And, the mini XY plotter 42 is moved to a position corresponding to the sewing path by applying a signal to the stepping motor according to the operating time of the operation unit of the automatic sewing machine 10 .

The present invention can be applied to processes requiring precise positioning systems. In particular, in the case of materials that are difficult to handle by automation, such as fabric, a worker, not a machine, intervenes to move the material and place it in the processing machine. An error may occur between the position of the material input to the processing machine and the position of the material placed by the operator during the process of arranging the material by the operator, and it can be used as a module that corrects this.

2 is a perspective view illustrating an automatic sewing machine having a macro-mini module for an automatic sewing machine according to an embodiment of the present invention. In particular, the automatic sewing machine is shown in which the macro-mini module for the automatic sewing machine is installed.

Referring to FIG. 2, an automatic sewing machine having a macro-mini module for an automatic sewing machine includes a work table unit 110, a sewing machine 120, a touch-monitor unit 130, a sewing template (not shown), and a sewing unit 140. , top frame 150, macro XY plotter 160, vision feedback system 170 and mini XY plotter 180.

The work table part 110 has a square plate shape and is supported by the lower frame part 105 . In the present embodiment, the work table unit 110 includes a main work table 112 and an auxiliary work table 114 foldably arranged on both sides of the main work table 112 . A sewing machine 120, a sewing template, a sewing unit 140, a macro XY plotter 160, a vision feedback system 170, and a mini XY plotter 180 are disposed above the main work table 112.

The sewing machine 120 protrudes in the Z-axis direction on the work table unit 110 and is then bent along the Y-axis direction. The sewing machine 120 includes a sewing machine motor (not shown) installed inside the frame of the sewing machine 120, and a main shaft (not shown) connected to the sewing machine motor extends the frame of the sewing machine 120 (ie, the extension direction of the arm). ) are installed according to

The touch-monitor unit 130 is disposed above the frame of the sewing machine 120 and displays a user screen for inputting various commands for sewing operations.

The sewing template is placed on the worktable unit 110 and serves to press the fabric flat during sewing by the sewing machine 120. The sewing template is composed of a lower plate for supporting the fabric and an upper plate for pressing the fabric, and slits are formed in the lower plate and the upper plate to correspond to the sewing lines of the fabric.

The sewing unit 140 includes a needle unit protruding in the -Z-axis direction and is disposed at the end of the sewing machine 120, and sews the fabric exposed through the slit formed in the sewing template.

The upper frame 150 has an arch shape to cover the work table unit 110 and is disposed in an end area of the sewing machine 120 to cross the frame of the sewing machine 120 .

The macro XY plotter 160 is disposed in a long bar shape parallel to the Y-axis direction on the worktable unit 110, and macroscopically moves the sewing template disposed on the worktable unit 110 in the X-axis direction and the Y-axis direction. transport it That is, macroscopic position control of the automatic sewing machine is possible through the macro XY plotter 160 . In this embodiment, the macro XY plotter 160 transfers the sewing template in a planar macroscopic manner via the mini XY plotter 180.

The vision feedback system 170 is disposed at the end of the sewing machine 120, recognizes the seam line of the fabric exposed through the slit formed in the sewing template, and generates a top stitch sewing path spaced apart from the seam line at a predetermined interval. do. That is, the vision feedback system 170 takes an image of the seam line of the fabric located inside the sewing template through the camera, extracts shape information such as the location and inclination of the seam line from the captured image, and then determines the top stitch sewing path based on this. generate

The mini XY plotter 180 is disposed in a long bar shape parallel to the Y-axis direction on the worktable unit 110, and operates while tracking the sewing path while being attached to the macro XY plotter 160, but the worktable unit (110) The sewing template disposed above is microscopically transported in the X-axis direction and the Y-axis direction. That is, microscopic position control of the automatic sewing machine is possible through the mini XY plotter 180. When the automatic sewing machine starts sewing, the mini XY plotter 180 tracks the upper needle sewing path and assists the automatic sewing machine in its sewing operation. In this embodiment, the mini XY plotter 180 attached to the macro XY plotter 160 transfers the sewing template microscopically in a plane.

In this embodiment, the vision feedback system 170 recognizes the seam line and corrects the sewing operation error of the automatic sewing machine, and the mini XY plotter 180 assists the operation by the sewing operation error, so that the automatic sewing machine performs the upper stitch sewing operation. can do.

In addition, since the operation accuracy of the mini XY plotter 180 is higher than that of the automatic sewing machine, it is possible to sew a more detailed pattern than before, and thus the sewing quality can be improved. That is, the sewing error can be recognized through the vision feedback system 170 of the present invention, the sewing error can be corrected by the mini XY plotter 180, and the quality of the sewing work can be improved. This results in lowering the defect rate and can contribute to the automation and advancement of clothing manufacturing factories.

FIG. 3A is an image for explaining the vision feedback system shown in FIG. 2 . FIG. 3B is an image of the vision feedback system shown in FIG. 2 viewed from the side.

Referring to FIGS. 2 , 3A and 3B , the vision feedback system 170 includes a camera (eg, LiDAR camera) and a computer that processes images.

The camera is installed near the sewing unit 140 of the automatic sewing machine so as to view sewing. While the automatic sewing machine is operating, the camera takes a picture of the fabric and transmits the fabric image to the computer.

The computer receives an image captured by the camera and generates a sewing path.

Meanwhile, the vision feedback system 170 may further include a photographing lighting unit 172 to provide light for photographing by a camera. The lighting unit 172 is disposed on the upper frame 140 so as to face the work table unit 110 .

FIG. 4A is an image for explaining the mini XY plotter shown in FIG. 2 . Figure 4b is an image for explaining the X module of the mini XY plotter shown in Figure 4a. FIG. 4c is an image of the X module of the mini XY plotter shown in FIG. 4a viewed from above. FIG. 4d is an image for explaining the Y module of the mini XY plotter shown in FIG. 4a. FIG. 4f is an image of the Y module of the mini XY plotter shown in FIG. 4a viewed from above. FIG. 5 is an image for explaining that the template holder is attached to the mini XY plotter shown in FIG. 4a.

Referring to FIGS. 2 and 4A to 5 , the mini XY plotter 180 includes an X-axis drive unit 182, a Y-axis drive unit 184 and a bracket unit 186, and is attached to the macro XY plotter 160. In accordance with the time when the needle of the sewing part of the automatic sewing machine passes through the fabric and the time when the operating part of the automatic sewing machine operates by receiving the upper needle sewing path and the encoder signal of the automatic sewing machine from the vision feedback system 170 The template holder 190 connected to the sewing template accommodating the fabric for sewing in the upper needle sewing path is moved to a corresponding position.

The X-axis driving unit 182 includes a first stepping motor 182a and a first lead screw 182b to move the template holder 190 fastened to the bracket unit 186 on the worktable unit 110 in the X-axis direction. move microscopically.

The first stepping motor 182a is disposed such that the motor shaft is parallel to the Y-axis direction.

The first lead screw 182b has one end connected to the motor shaft of the first stepping motor 182a and the other end connected to the bracket part 186, so that the bracket part 186 is driven by the first stepping motor 182a. moves in the Y-axis direction. Accordingly, the sewing template is moved in the Y-axis direction on the work table 110 through the template holder 190 connected to the bracket unit 186 .

The X-axis driving unit 182 may further include a first anti-backlash nut 182c (or anti-backlash nuts) to prevent backlash generated when the first lead screw 182b moves forward and backward. there is.

The X-axis driver 182 may further include a first proxy sensor 182d for establishing a reference point for the X-axis origin of the template holder 190 .

The Y-axis drive unit 184 includes a second stepping motor 184a, a timing belt assembly 184b, and a second lead screw 184c, and the template holder 190 fastened to the bracket unit 186 is used as a worktable unit. (110) microscopically in the Y-axis direction.

The second stepping motor 184a is disposed so that the motor shaft is parallel to the X-axis direction.

The timing belt assembly 184b includes a first timing gear 184b1 connected to the motor shaft of the second stepping motor 184a, a second timing gear 184b2 spaced apart from the first timing gear 184b1, and a first timing gear. A timing belt 184b3 connecting 184b1 and the second timing gear 184b2 is included. In this embodiment, two gears disposed between the first timing gear 184b1 and the second timing gear 184b2 may function to adjust the tension of the timing belt 184b3. That is, the tension of the timing belt 184b3 may be adjusted by moving the two tension gears (reference numerals not given) upward or downward.

The second lead screw 184c has one end connected to the second timing gear 184b2 and the other end connected to the bracket part 186, and transmitted through the timing belt 184b3 according to the driving of the second stepping motor 184a. The bracket unit 186 is moved in the X-axis direction based on the rotational force. Accordingly, the sewing template is moved in the X-axis direction on the work table 110 through the template holder 190 connected to the bracket unit 186 .

The Y-axis driver 184 may further include a second anti-backlash nut 184d to prevent backlash generated when the second lead screw 184c is moved forward and backward.

The Y-axis driving unit 184 may further include a second proxy sensor 184e for establishing a reference point of the Y-axis origin of the template holder 190 .

FIG. 6 is a plan view illustrating seam line recognition and a corresponding operation by the vision feedback system shown in FIG. 3A.

Referring to FIGS. 3A and 6 , the fabric is exposed through a slit formed in a sewing template disposed on the worktable unit 110 . Here, the sewing template is composed of a lower plate for supporting the fabric and an upper plate for pressing the fabric, and the lower plate and the upper plate are formed with slits opening corresponding to the sewing lines of the fabric.

The macro XY plotter 160 macroscopically moves the sewing template for sewing operation, and the mini XY plotter 180 photographs fabrics with irregularly arranged seam lines for each worker, and uses upper stitches spaced apart at regular intervals from the recognized actual seam line. The sewing template is microscopically moved along the sewing path. Macro Motion indicated by a dotted line in FIG. 5 shows that the sewing template is moved by the macro XY plotter 160, and Macro Motion indicated by a black solid line shows that the sewing template is moved by the mini XY plotter 180, The green solid line shows the top stitch sewing path.

When sewing an upper stitch sewing path with only the macro XY plotter 160, fabrics irregularly arranged for each worker perform an uneven upper stitch sewing operation at the seam line, resulting in a defect in which the sewing interval between the seam line is not constant.

However, when the mini XY plotter 180 is arranged in the macro XY plotter 160 to perform a sewing operation along the upper stitch sewing path, even if the fabric is irregularly arranged for each operator on the sewing template, the macro XY plotter 160 macroscopically Since the mini XY plotter 180 microscopically moves the sewing template while moving the sewing template, the sewing distance with the seam line is maintained uniformly.

7 is a flowchart illustrating an automatic sewing method using an automatic sewing machine according to an embodiment of the present invention.

1 and 7, the sewing template disposed on the work table unit 110 is moved on the XY plane through the macro XY plotter 160 (step S110). Here, the sewing template is moved macroscopically on the XY plane by the macro XY plotter 160 .

Subsequently, the fabric is photographed with the camera 32 (step S120).

Subsequently, the original image captured by the camera 32 is transmitted to the computer 34 (step S130).

Next, the computer 34 recognizes the fabric seam line (step S140).

Next, the computer 34 creates an upper stitch sewing path spaced apart from the seam line by a predetermined distance (step S150), and also extracts an encoder signal from the motor of the automatic sewing machine (step S160).

Subsequently, the computer 34 transmits the sewing path and the encoder signal to the controller 44 of the mini XY plotter module 40 (step S170).

Subsequently, the sewing template disposed on the work table unit 110 is moved on the XY plane through the mini XY plotter module 40 (step S180). Here, the sewing template is microscopically moved on the XY plane by the mini XY plotter module 40 .

As described above, according to the present invention, it is attached to the macro XY plotter of the automatic sewing machine to assist the operation of the automatic sewing machine by the sewing operation error, thereby enabling precise sewing of the automatic sewing machine and By recognizing the seam line and correcting errors in the sewing operation of the automatic sewing machine, it is possible to improve the defect rate by maintaining a constant sewing interval.

Although the above has been described with reference to the examples, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. You will understand.

The apparel market maintains a large market worldwide, and the ratio of labor costs to sales is very high. While workers in the industry are aging, it is difficult to supply new workers. In the future, it is necessary to minimize the dependence on manpower and introduce automation technology into the clothing production process. The device of the present invention is a device capable of automatically performing a sewing path creation task determined by a person in the industry visually in a manufacturing process of a clothing market. Therefore, it is possible to replace manpower and automate part of the process.

For automated manufacturing technology in the clothing market, technology for recognizing fabrics is an essential element. INDUSTRIAL APPLICABILITY The present invention can be used in a process that requires recognizing a sewing line of a fabric and creating a sewing path during a clothing manufacturing process. This not only enables the automation of repetitive work by replacing existing manpower, but also can greatly reduce the defect rate. Therefore, there will be demand from companies related to clothing manufacturing.

10: automatic sewing machine 20: motor encoder
30, 170: vision feedback system 32: camera
34: computer 40, 180: mini XY plotter module
42: mini XY plotter 44: controller
110: work table unit 120: sewing machine
130: touch-monitor unit 140: sewing unit
150: upper frame 160: macro XY plotter
172: lighting unit 182: X-axis driving unit
182a: first stepping motor 182b: first lead screw
182c: first anti-backlash nut 182d: first proxy sensor
184: Y-axis drive unit 184a: second stepping motor
184b: timing belt assembly 184c: second lead screw
184d: second anti-backlash nut 184e: second proxy sensor
186: bracket part 190: template holder

Claims (17)

a vision feedback system recognizing a seam line of a fabric to be sewn and generating a top stitch sewing path spaced apart from the seam line by a predetermined interval; and
A macro- mini module. The method of claim 1, wherein the vision feedback system,
a camera installed in the vicinity of the sewing unit of the automatic sewing machine to look at the sewing unit and photographing the fabric during operation of the automatic sewing machine; and
A macro-mini module for an automatic sewing machine, characterized in that it comprises a computer for receiving the image taken by the camera and generating an upper stitch sewing path. 3 . The macro-mini module for an automatic sewing machine according to claim 2 , wherein the vision feedback system further comprises a lighting unit providing light for photographing by the camera. The method of claim 1, wherein the mini XY plotter module,
A mini XY plotter having one side connected to the macro XY plotter and the other side connected to a template holder for holding a sewing template; and
By receiving an upper needle sewing path and an encoder signal of the automatic sewing machine from the vision feedback system, the mini XY according to the time when the needle of the sewing part of the automatic sewing machine passes through the fabric and the time when the operating part of the automatic sewing machine operates A macro-mini module for an automatic sewing machine, characterized in that it comprises a controller for moving the sewing template to a position corresponding to an upper needle sewing path through a plotter. The method of claim 4, wherein the mini XY plotter,
an X-axis driving unit for microscopically moving a template holder connected to a sewing template accommodating a fabric for sewing in the X-axis direction; and
A macro-mini module for an automatic sewing machine, characterized in that it comprises a Y-axis driving unit for microscopically moving the sewing template in the Y-axis direction. The method of claim 5, wherein the X-axis drive unit,
a first stepping motor disposed so that the motor shaft is parallel to the Y-axis direction; and
and a first lead screw having one end connected to the motor shaft of the first stepping motor and the other end connected to the template holder to move the template holder in the Y-axis direction according to driving of the first stepping motor. A macro-mini module for automatic sewing machines with The method of claim 6, wherein the X-axis drive unit further comprises a first anti-backlash nut (Anti-Backlash Nuts) to prevent backlash generated when the first lead screw is moved forward and backward. A macro-mini module for automatic sewing machines that 7. The macro-mini module for an automatic sewing machine according to claim 6, wherein the X-axis drive unit further comprises a first proxy sensor for making an X-axis origin reference point of the template holder. The method of claim 5, wherein the Y-axis driving unit,
a second stepping motor disposed so that the motor shaft is parallel to the X-axis direction;
A timing belt including a first timing gear connected to a motor shaft of the second stepping motor, a second timing gear spaced apart from the first timing gear, and a timing belt connecting the first timing gear and the second timing gear. assembly; and
One end is connected to the second timing gear and the other end is connected to the template holder to move the template holder in the X-axis direction based on rotational force transmitted through the timing belt according to driving of the second stepping motor. A macro-mini module for an automatic sewing machine, comprising two lead screws. 10. The method of claim 9, wherein the Y-axis drive unit further comprises a second anti-backlash nut (Anti-Backlash Nuts) to prevent backlash generated when the second lead screw is moved forward and backward. A macro-mini module for automatic sewing machines that 10. The macro-mini module for an automatic sewing machine according to claim 9, wherein the Y-axis drive unit further comprises a second proxy sensor for setting the Y-axis origin reference point of the template holder. a worktable portion supported by the frame portion;
a sewing machine disposed on the work table;
a sewing unit disposed at an end of the sewing machine and sewing the fabric exposed through a slit formed in a sewing template that flatly presses the fabric during sewing of the sewing machine;
a macro XY plotter disposed on the work table and transferring the sewing template disposed on the work table in the X-axis direction and the Y-axis direction;
a vision feedback system recognizing a seam line of the fabric exposed through the slit formed in the sewing template and generating a top stitch sewing path spaced apart from the seam line; and
and a mini XY plotter module attached to the macro XY plotter, receiving an upper needle sewing path signal from the vision feedback system and moving to a position corresponding to the upper needle sewing path. 13. The automatic sewing machine according to claim 12, further comprising a touch-monitor unit disposed at an end of the sewing machine. 13. The automatic sewing machine according to claim 12, further comprising an upper frame having an arch shape to cover the work table and disposed at an end region of the sewing machine so as to intersect the frame of the sewing machine. The method of claim 14, wherein the vision feedback system,
a camera installed in the vicinity of the sewing unit of the automatic sewing machine to look at the sewing unit and photographing the fabric during operation of the automatic sewing machine; and
Including a computer for receiving the image taken by the camera and generating an upper stitch sewing path,
The automatic sewing machine, characterized in that the camera and the computer are disposed on the upper frame. 16. The method of claim 15, wherein the vision feedback system further comprises a lighting unit providing light for photographing by the camera,
The automatic sewing machine, characterized in that the lighting unit is disposed on the upper frame. Macroscopically moving the sewing template through the macro XY plotter of the automatic sewing machine;
photographing the fabric exposed through the slit formed in the sewing template;
Transmitting the photographed original image to a computer;
recognizing the seam line of the fabric;
generating a top stitch sewing path spaced apart from the recognized seam line by a predetermined distance;
extracting an encoder signal from a motor of an automatic sewing machine;
Transmitting the upper needle sewing path and encoder signal to a mini XY plotter module; and
Automatic sewing method comprising the step of microscopically moving the sewing template through the mini XY plotter module.

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