KR101703111B1 - Automatic System for Laser Ablation - Google Patents

Abstract

The present invention relates to a laser ablation automated system, separately collecting a defective product and controlling a laser work condition. The laser ablation automated system comprises: a centering unit; a transfer unit; a laser unit; a dust treatment unit; a deburring unit; a process monitoring unit; a quality monitoring unit; an unloading unit; and an integrated control unit.

Description

[0001] The present invention relates to an automatic system for laser ablation,

The present invention relates to a laser ablation automation system. More particularly, the present invention relates to a laser ablation automation system, and more particularly, to a laser ablation automation system in which a pair of rails are arranged in parallel to each other in a transfer unit for improving the abrading operation speed and stable transfer of a plated steel sheet, And more particularly, to a laser ablation automation system for controlling the laser working conditions and collecting defective items separately when abnormalities are detected.

HPF (Hot Press Forming, Hot Stamping) is a method of heating a steel plate at 900 ° C or higher and press forming it to quench the steel plate to improve its strength by 3 to 5 times higher than before machining. .

On the other hand, the TWB (Tailor Welded Blank) is a technique of butt welding two steel plates having different materials or different thicknesses to each other, joining them together, and then press-molding the steel plates into a predetermined shape. The safety of the vehicle is improved by buffering the dissimilar steel sheet in the event of a vehicle collision.

However, in order to heat the HPF, the surface of the steel sheet is plated with Al-Si (hereinafter referred to as "plated steel sheet (S)") having excellent corrosion resistance and heat resistance. In the butt welding of TWB, There is a problem that the corresponding portion is broken at the time of press forming processing.

In order to solve such a problem, a technique of selectively ablating a plating layer at a site to be but welded by using a laser beam is disclosed in Korean Patent No. 10-1346317 (registered on March 23, 2013).

However, there is a disadvantage in that it takes a long time to align the plated steel sheet to be abraded to increase the production time, and in the case where the plated steel sheet is not normally aligned, the plating layer in the portion other than the position to be welded is abraded, There is a problem of deterioration or damage to peripheral facilities.

KR 10-1346317 B1 2013.12.23.

A problem to be solved by the present invention is to provide a laser ablation automation system that shortens an abrading operation time of a plated steel sheet, stably performs a transferring process, and thoroughly inspects an abraded plated steel sheet in real time.

According to an aspect of the present invention, there is provided a laser ablation automation system including a centering unit including an aligned electromagnet disposed in an ablation work line, the aligning unit performing an aligning process to bring a working end of a plated steel sheet into contact with the aligned electromagnet; An input rail disposed in the ablation work line and having an alignment section, a stake section, a deburring section, and a remaining section sequentially; an output rail in which a first half section and a second half section are sequentially formed, and a half section is disposed in parallel with the remainder section; A first transfer electromagnet installed on the input rail so as to be able to move up and down, and a second transfer electromagnet installed on the output rail such that the first transfer electromagnet and the second transfer electromagnet move up and down, A conveying unit that performs a conveying process in a fixed state; And a laser head disposed above and below the ablation work line and spaced apart from each other in the direction of an ablation work line, wherein the laser head is arranged to be movable up / down / forward / A laser unit for performing an ablation process of the laser beam; A dust processing unit provided in the laser head and including a nozzle for performing a protective gas spraying process and a duct for collecting plating dust scattered by the spraying process; A deburring unit disposed in the deburring section to perform a deburring process of the work end; A process monitoring unit including a camera for capturing the alignment process, the transfer process, the ablation process, and the deburring process; A quality monitoring unit including a line scan camera for capturing image information of an ablated portion of the worktable; A loading step of placing a plated steel sheet on the centering unit for the aligning step, and a loading unit performing a loading step for carrying out the plated steel sheet after the carrying step is completed; And a quality judging unit for receiving the image information of the ablated region from the line scan camera and analyzing the image information to determine whether the ablation is proper or not.

According to another aspect of the present invention, there is provided a laser ablation automation system comprising: a centering unit including a centering unit, a setting table having a plating steel plate disposed on one side of the aligning electromagnet, a setting pin for pushing a plated steel plate, Wherein the setting table further includes a plurality of sliding bars orthogonally intersecting with the longitudinal direction of the aligned electromagnets and juxtaposed with each other in the longitudinal direction of the aligned electromagnets, As shown in Fig.

The laser ablation automation system of the present invention may further comprise a first cylinder for raising and lowering the first transfer electromagnetic in the transfer unit, a second cylinder for raising and lowering the second transfer electromagnetic, And a transfer table disposed in parallel to the first transfer electromagnet and the second transfer electromagnet, and electromagnet conveying means for forwarding / backing the first transfer electromagnet and the second transfer electromagnet, respectively.

Further, the laser ablation automation system of the present invention is characterized in that the loading unit is disposed on the setting table side and a pair of carrying-in and carrying-out pallets is placed, and is placed between the setting table and the carrying-in part, A first robot arm disposed on one side of the transfer table, a take-out section in which a pair of carry-out pallets are taken in and out, and a second robot arm disposed between the transfer table and the carry-out section, And a second robot arm for loading the plated steel sheet on the pallet for carrying out.

Further, in the laser ablation automation system of the present invention, the quality judging section includes an attribute setting section, an image processing section, and a judging section. The attribute setting section sets the total number of pixels and the number of the scratch pixels of the plating residue, The image processing means receives the upper and lower images of the edge processed by the line scan camera, divides the image into a plurality of pixels, measures brightness values for each pixel, The pixel having the plating residue is displayed in black and the pixel having the plating residue is displayed in white. The positive / negative determination means counts the total number of white pixels of the image, If the number of pixels is exceeded, the plated steel sheet is treated as defective, the number of pixels of the white pixel group is counted, The number of pixels of the white pixel group is determined to be defective even if the total number of white pixels of the image is equal to or less than the total number of pixels, The pixel group is judged as a scratch and the defect judgment is suspended.

Further, in the laser ablation automation system of the present invention, when the upper or lower edge of the working end is not ablated, the judging means judges it as a scratch, and the laser head corresponding to the edge is moved toward the rear And when the number of white pixels on the upper surface or the lower surface of the operation end suddenly increases, the laser head is adjusted up / down with respect to the input side rail.

Further, in the laser ablation automation system of the present invention, the quality discrimination unit further includes data storage means for storing the pixel-processed image information and the operation condition of the laser head, and when a pixel shows a specific pattern in the stored image information, And is databaseed together with the operating conditions of the laser head.

According to the laser ablation automation system of the present invention, since the remaining section of the input-side rail and the first-half section of the output-side rail are arranged in parallel with each other, the working time is shortened and the feeding process of the coated steel sheet is stably performed. Since the plated steel plate subjected to the abrasion treatment is inspected in real time through the discrimination unit and reflected in the work, the production efficiency of the present invention is improved.

1 is a plan view of a laser ablation automation system according to the present invention;
FIG. 2 is a plan view showing an enlarged view of a portion A in FIG. 1; FIG.
3 is a plan view showing a transfer unit of the laser ablation automation system according to the present invention.
4 is a perspective view illustrating an exploded view of a part of the laser ablation automation system according to the present invention.
5 is an enlarged perspective view of a portion B in Fig.
6 is a front view of a laser head of a laser ablation automation system according to the present invention.
7 is an image showing the installation state of the nozzle and the duct in the laser ablation automation system according to the present invention.
8 is a perspective view illustrating a deburring unit of the laser ablation automation system according to the present invention.
9 is an image showing a display window in the integrated control unit of the laser ablation automation system according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing a laser ablation automation system according to the present invention, and FIG. 2 is an enlarged plan view of a portion A in FIG.

1 and 2, the ablation system according to the present invention includes a centering unit 10 for performing an alignment process of a plated steel sheet S as an ablation preprocessing process, and a centering unit 10 for performing a process A transfer unit 20 for carrying out the transfer process with the plated steel sheet S having been aligned with the electromagnet fixed thereon, a laser unit 30 for carrying out the ablation process, a protective gas injection process and a dust collecting process A deburring unit 50 for performing a deburring process, which is a subsequent process of the ablation process, a process monitoring unit 60 for monitoring the progress of the process, a deburring unit 50 for performing deburring, A quality monitoring unit 70 for monitoring an ablation region of the coated steel sheet S after the process has been completed, a process of inserting the coated steel sheet S for the aligning process and a process of inserting the coated steel sheet S ) Outside of Loading unit 80 to perform the loading process in order, and consists of a integrated control unit 90 for controlling the process.

In the present invention, the plated steel sheet S is conveyed in the same plane for the control of all the processes except for the charging process and the loading process. In particular, in the ablation process in which waiting time is reduced and precision transfer is required The transfer line of the transfer unit 20 is separated into the input rail 21 and the output rail 22 and the input rail 21 is disposed directly below the ablation work line x, do.

Here, the ablation work line (x) refers to a virtual line having ends of two laser heads 31 and 33 of the laser unit 30 performing the ablation process, and the alignment refers to an ablation target side (Hereinafter, referred to as a "work unit") on the ablation work line (x).

The centering unit 10 is a unit for performing a process of aligning the working end s of the plated steel sheet S to the ablation work line x, An arrangement electromagnet 11 in which a side surface 11a is disposed in the ablation work line x and a setting table 13 in which one end is disposed adjacent to the electromagnet 11 and the plated steel sheet S is placed thereon, A setting pin 17 for pushing the plated steel sheet S placed on the setting table 13 to the aligned electromagnet 11 and a setting pin feeding means 18 for forwarding and backward the setting pin 17 .

A plurality of sliding bars 15 are provided on the upper surface of the setting table 13 so as to be juxtaposed with each other in the longitudinal direction of the aligned electromagnets 11. As shown in Figure 2, The setting pin 17 protrudes through the gap by the setting pin feeding means 18 provided at the lower portion thereof.

The first robot arm 83 of the unloading unit 80 to be described later is arranged between the aligned electromagnet 11 and the setting pin 17 so that the working end s faces the side surface 11a of the aligned electromagnet 11 The setting pin 17 moves forward to move the plated steel sheet S to the aligned electromagnet 11 side.

On the other hand, when the working end s approaches the aligned electromagnet 11, electric power is applied to the aligned electromagnet 11 by the detection of the sensor e and a magnetic force is generated, Is arranged on the ablation work line (x) by being aligned with the side surface 11a of the sorting electromagnet 11.

The sensing sensor e is arranged on the setting table 13 adjacent to the aligned electromagnet 11, since the impact due to the magnetic force of the plated steel sheet S accelerates, So that the moving distance by the magnetic force is minimized.

FIG. 3 is a plan view showing a transfer unit of the laser ablation automation system according to the present invention, and FIG. 4 is a perspective view explaining a part of the laser ablation automation system according to the present invention.

3 and 4, the transfer unit 20 is a unit for transferring the plated steel sheet S, which has been aligned by the centering unit 10, with an electromagnet and transferring the plated steel sheet S along the ablation work line x, An input rail 21 disposed immediately below the ablation work line x and composed of an alignment section 21a, a shingling section 21b, a deburring section 21c and a remaining section 21d, An output rail 22 having a first section 22a and a second section 22b and having a first section 22a and a second section 22b disposed in parallel with the remaining section 21d, A second transfer electromagnet 24 installed on the output rail 22, a first cylinder 25 for moving up and down the first transfer electromagnet 23, A transfer table 27 disposed parallel to the input rail 21 and the output rail 22 and a transfer table 27 disposed parallel to the input rail 21 and the output rail 22, And an electromagnet conveying means (not shown) for forwarding / reversing the two-piece electromagnet 24 respectively.

The first transfer electromagnet 23 is configured to transfer the plated steel sheet S having been aligned along the abrading work line x. To this end, the aligning section 21a includes a setting table 13 and an aligned electromagnet 11, The first moving electromagnet 23 moves up and down by the elevating cylinder 25 to move the plated steel sheet S protruded from the setting table 13 The laser beam is passed through the cutting gap 21b and the deburring section 21c by the electromagnet conveying means in a state where the plated steel sheet S is fixed by the magnetic force, The ablation process and the deburring process are sequentially performed by the process units 31 and 33 and the deburring unit 50, respectively.

When the plated steel sheet S is transferred to the first section 22a and the remaining section 21d which are mutually overlapping sections, the electric power of the first transfer electromagnet 23 is cut off by the first cylinder 25 And the second feeding electromagnet 24 is elevated and lowered by the second cylinder 26, and the plated steel sheet S is fixed by the applied electricity and is transferred to the second half section 22b. Thereafter, when the electricity of the second feeding electromagnet 24 is cut off and the fixing is released, the loading process by the unloading unit 80 is performed.

As described above, according to the present invention, since the rails of the transfer unit 20 are structured as a double structure, the entire process speed can be improved and the erosion defect rate can be reduced at the same time.

That is, when the rail is started with a single structure, one transfer magnet must transfer the plated steel sheet S to the second half section 22b, so that the waiting time of the other unit increases and the whole process speed is lowered.

In the ablation process, precise transfer and silent transfer are required to accurately remove the plating layer. As the rail becomes longer, sagging and vibration caused by the load of the plated steel sheet (S) being conveyed increases, can do.

Accordingly, in the present invention, the conveying for the loading process of the unloading unit 80 after the deburring process is performed by the second conveying electromagnet 24 in the output rail 22, and the first conveying electromagnet 23 is returned So that the subsequent alignment process can be performed to shorten the waiting time and to perform precise and silent transfer.

The remaining section 21d of the input side rail 21 and the overall section 22a of the output side rail 22 have a length corresponding to the alignment section 21a.

The conveying table 27 is configured to support the rear portion of the coated steel sheet S during conveyance and has a height equal to that of the setting table 13. A plurality of rollers 27a are arranged in the conveying direction, S, the frictional resistance is reduced so that the workpiece s is stably transported without being released to the ablation work line x.

FIG. 5 is an enlarged perspective view of part B in FIG. 4, and FIG. 6 is a front view showing a laser head of the laser ablation automation system according to the present invention.

4 to 6, the laser unit 30 is a unit for abrading a part of the base material layer together with the plating layer or the plating layer of the working end s, and is provided with one longitudinal end of the aligned electromagnet 11, that is, An upper laser head 31 disposed at a cutting stall 21b of the ablation work line x and disposed above the ablation work line x; A lower laser head 33 disposed below the ablation work line x and a lower laser head 33 disposed immediately above the lower laser head 33 and disposed above the ablation work line x, And a laser dump (34).

The laser dumps 32 and 34 are spaced apart from each other along the ablation work line x so as to prevent mutual interference between the laser heads 31 and 33. After the ablation process of a plated steel sheet S is completed, And functions to prevent the laser beam from being exposed to the space to damage the peripheral equipment by temporarily accommodating the laser beam while the steel sheet S enters.

The laser heads 31 and 33 employ a squared pulse laser beam head having a flat surface with an ablated surface and are provided with cooling means for preventing overheating due to a long working time, Down / forward / backward by a plurality of actuators controlled by the quality determining unit of the controller 90.

Further, when the laser heads 31 and 33 are arranged vertically to perform the ablation process, the optical system inside the head may be damaged by the laser beam reflected by the coated steel sheet S, If the tilt is excessive, the intensity of the incident laser beam may be weakened and the position of the laser heads 31 and 33 may not be easily controlled. Therefore, the tilting operation line x may be set to have an inclination angle of 80 to 85 degrees do.

7 is an image showing the installation state of the nozzle and the duct in the laser ablation automation system according to the present invention. 6 and 7, the dust processing unit 40 includes a nozzle 41 and a duct 43 provided in each of the laser heads 31 and 33 as a unit for improving the plating layer removal efficiency .

The nozzle 41 splashes the plating dust by spraying a protective gas to the laser beam irradiating portion of the work end s to prevent the aluminum component contained in the dust from being fused to the abraded work end s.

 To this end, a nozzle 41 is provided so that a protective gas is sprayed in a direction opposite to the conveying direction of the coated steel sheet S, thereby minimizing adhesion of the plating dust to the base material layer exposed by the abrasion, Thereby preventing the base layer structure from being coarsened.

As shown in Fig. 7, the duct 43 is a unit for preventing the plating dust, which collects the plating dust by the jetting process, from adhering to the abraded work end s, The nozzle 41 is disposed at a position opposite to the nozzle 41.

8 is a perspective view illustrating a deburring unit of the laser ablation automation system according to the present invention. 1 and 8, the deburring unit 50 is a unit for removing a burr formed in the work end s in the process of ablation, and is provided at one side of the laser unit 30, that is, A brush 51 arranged on the ablation work line x and a motor for operating the brush 51. The brush 51 is provided on the ablation work line x.

Since the burrs 51 are formed on the upper and lower surfaces and sides of the abraded worktable s and the periphery thereof, the brushes 51 are composed of three brush combinations for brushing each surface as shown in FIG.

9 is an image showing a display window in the integrated control unit of the laser ablation automation system according to the present invention. Referring to FIGS. 6, 7 and 9, the process monitoring unit 60 is a unit for monitoring the abnormality of each process, typically a charge-coupled device camera (CCD) And the images photographed and photographed are transmitted to the integrated control unit 90 in real time and the images of the respective processes are displayed on the display window (a) of the integrated control unit 90 as shown in FIG.

The quality monitoring unit 70 is a unit for obtaining a work end (s) image of the plated steel sheet S subjected to the ablation process in order to determine the abrasion of the laser head 31 and 33, A line scan camera (71) (line scan camera) installed on the work stage (s) exposed to the ablation process separately photographs the upper and lower portions of the base material layer, Unit 90 and analyzed by a quality judging unit to be described later and the result is displayed on the display windows b and c of the integrated control unit 90 as shown in Fig.

The unloading unit 80 places the plated steel sheet S placed on the pallet pallet on the setting table 13 as shown in Fig. 1, while the plated steel sheet S A loading unit 81 arranged on the setting table 13 side for loading and unloading the pallet p for loading and unloading, a unit for loading the coated steel strip S onto the pallet p ' A first robot arm 83 disposed between the setting table 13 and the carry-in section 81 for sequentially placing the plated steel sheet S loaded on the carry-in pallet p on the setting table 13, A carry-out section 85 which is disposed at one side of the transfer table 27 and through which the carry-out pallet p 'enters and exits and a second transferring electromagnet 24 which is disposed between the transfer table 27 and the carry-out section 85, And a second robot arm 87 for loading the plated steel sheet S transported by the transporting pallet p '.

A pallet p for carrying in which a plated steel sheet S is placed on a carry-in portion 81 by means of a forklift is placed on the pallet P. The first robotic arm 83 is moved The receiving pallet p must be accurately positioned at a corresponding point of the pallet 81. To this end, the carrying unit 81 is provided with a sensor for guiding the proper position of the carrying pallet p, (Not shown) for counting the remaining amount of the coated steel sheet S that is adhered to the surface of the steel sheet S.

In addition, since the pallet p is placed in the pallet p for a predetermined period of time, it is impossible to stop the aligning process of the coated steel sheet S. In the present invention, So that the plated steel sheet S placed on the other pallet is continuously inserted into the aligning process during the process of replacing one pallet.

The carry-out portion 85 is also structured such that a pair of carry-out pallets p 'are arranged for the same reason as the carry-in portion 81, and the carry-out pallet p' The counting means for counting the amount of the coated steel sheet S loaded on the detection sensor and the pallet p 'for carrying out is provided.

 The integrated control unit 90 is a human-machine interface (HMI) that manages the processes of the present invention, and includes a quality discrimination unit for controlling the operation of each unit and discriminating whether or not the ablation is appropriate .

The quality determining unit includes an attribute setting unit, an image processing unit, a correcting unit, and a result processing unit, and the attribute setting unit sets the total limitation pixel count, the clustered pixel count, and the scratch pixel count of the plating remnant.

The image processing means receives the upper and lower images of the task (s) subjected to the ablation processing from the pair of line scan cameras 71, divides each of the corresponding images into 200 pixels, measures brightness values for each pixel, If the pixel is converted into a monochrome image based on the contrast value, the pixel in which the plating layer is completely removed is displayed in black, and the pixel having the plating residue is displayed in white.

Herein, the total number of pixels indicates the maximum number of white pixels among the 200 pixels that can be determined as passable, and the total number of pixels is the number of the white pixels forming the group. Means the maximum number of pixels that can be accepted.

The positive / negative determination means counts the total number of white pixels of the image, and treats the coated steel sheet S as defective when the total number thereof exceeds the total limited number of pixels.

In addition, when white pixels form a group, this means a lump-shaped plating remnant. If the size of the lump is larger than a certain size, even if the distribution of plating remnants is small in the entire work stage (s) .

Therefore, if the white pixel group is formed in order to select such defective patterns, the number of pixels of the white pixel group is counted, and when the number of pixels of the white pixel group exceeds the total number of pixels, It is determined that the coated steel sheet S is defective.

On the other hand, the scratch existing in the work stage (s) is not a defective element but is treated as a white pixel in the process of converting the black and white image, and its size is much larger than that of the usual plating residue. Therefore, when the number of pixels of the white pixel group exceeds the number of pixels of the group of white pixels, the white-pixel determining unit determines that the white pixel group is a scratch, suspends the determination of defective pixels, , c).

Particularly, an alignment error may occur due to various causes in the process of transferring the coated steel sheet S, so that the upper or lower edge of the work end s may not be ablated. In this case, The operator or the integrated control unit 90 controls the actuator of the laser unit 30 to control the laser heads 31 and 32 corresponding to the corners of the display window b and c, 33 are rearwardly adjusted with respect to the input side rail 21.

In addition, even when a normal ablation process is performed, the number of white pixels on the upper surface or the lower surface may increase sharply due to various causes such as an error in the optical system of the laser heads 31 and 33. In the case where the variation of the focal length of the double laser beam is caused The actuators are controlled as described above so that the laser heads 31 and 33 of the corresponding surface are adjusted up and down with respect to the input rail 21. [

The result determined by the positive / negative determination means is displayed on the display windows (b, c) of the result processing means as shown in FIG. 9, and the coated steel strip S which has been judged as defective is separated by the second robot arm 87 separately And are collected in a pallet provided.

The quality discrimination unit further includes data storage means for storing pixel-processed image information and operating conditions (laser beam intensity, lens specification, etc.) of the laser heads 31 and 33 in real time, When this specific pattern is shown, it is converted into a database together with the operating conditions of the laser heads 31 and 33, and it can be utilized as diagnostic data of defects issued during future work.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Centering unit
11: Aligning electromagnet 13: Setting table
15: Sliding bar 17: Setting pin
20:
21: Inlet rail 22: Outlet rail
23: first feeding electromagnet 24: second feeding electromagnet
25: lift cylinder 26: second cylinder
27: Feed table
30: Laser unit
31: upper laser head 32: upper laser dump
33: lower laser head 34: lower laser dump
40: Dust processing unit
41: nozzle 43: duct
50: Deburring unit
51: Brushes
60: Process monitoring unit
70: Quality monitoring unit
71: line scan camera
80: Unloading unit
81: Loading section 83: First robot arm
85: Export part 87: Second robot arm
90: Integrated control unit

Claims (7)

A centering unit (10) that includes an aligned electromagnet (11) disposed in an ablation work line (x) and performs an alignment process to bring the working end (s) of the plated steel sheet (S) ;
An input rail 21, a first half section 22a, and a second half section 22b, which are disposed in the ablation work line x and are sequentially provided with an alignment section 21a, a cutting edge section 21b, a deburring section 21c and a remaining section 21d, An output rail 22 in which the second section 22b is sequentially formed and the first section 22a is arranged in parallel with the remaining section 21d, And a second transfer electromagnet (24) mounted on the output rail (22) such that the first transfer electromagnet (23) and the second transfer electromagnet (24) A transfer unit 20 for carrying out the transfer process with the transfer unit S fixed thereon;
And a laser head (31, 33) arranged above and below the ablation work line (x) and spaced apart from each other in the direction of an ablation work line (x), wherein the laser heads (31, 33) A laser unit (30) arranged to be movable upward / downward / backward / forward to the workpiece (21b) and performing an ablation process of the workpiece (s);
A dust processing unit 40 provided in the laser heads 31 and 33 and including a nozzle 41 for performing a protective gas spraying process and a duct 43 for collecting plating dust scattered by the spraying process, ;
A deburring unit (50) disposed in the deburring section (21c) and performing a deburring process of the work end (s);
A process monitoring unit (60) including a camera for photographing the alignment process, the transfer process, the ablation process, and the deburring process;
A quality monitoring unit (70) including a line scan camera (71) for photographing image information of an ablated area of the work (s);
An unloading unit (80) for loading the plated steel sheet (S) on the centering unit (10) for carrying out the aligning process, and a loading process for carrying the plated steel sheet (S) And
An integrated control unit (90) for receiving image information of an ablated region from the line scan camera (71) and analyzing the image information to determine whether ablation is appropriate;
Wherein the laser ablation automation system comprises:
The method according to claim 1,
The centering unit 10 is provided with a setting table 13 on one side of which is disposed an aligned electromagnet 11 to face a plated steel sheet S and a plated steel plate S placed on the setting table 13, (17) for pushing the setting pin (17) and a setting pin feeding means (18) for forwarding / backing the setting pin (17)
The setting table 13 includes a plurality of sliding bars 15 arranged perpendicular to the longitudinal direction of the aligned electromagnets 11 so as to be juxtaposed with each other. The laser ablation automation system comprising:
The method according to claim 1,
The transfer unit 20 is provided with a first cylinder 25 for raising / lowering the first transfer electromagnet 23, a second cylinder 26 for raising / lowering the second transfer electromagnet 24, A transfer table 27 disposed parallel to the first and second transfer electromagnets 21 and 22 and an electromagnet conveying means for forwarding and reversing the first and second transfer electromagnets 23 and 24 respectively Features a laser ablation automation system.
3. The method of claim 2,
The unloading unit 80 is disposed on the setting table 13 side and is provided between the setting table 13 and the carry-in unit 81 in which a pair of carry-in pallets p enters and exits A first robot arm 83 for sequentially placing a plated steel sheet S loaded on the carrying pallet p on the setting table 13, a pair of carrying pallets and a plated steel plate S disposed between the transfer table 27 and the carry-out portion 85 and conveyed by the second transfer electromagnet 24 to the take-out pallet p And a second robot arm 87 mounted on the second robot arm 87 '.
The method according to claim 1,
Wherein the quality judging section includes an attribute setting section, an image processing section and a judging section,
Wherein the attribute setting means sets the total number of pixels, the number of pixels, and the number of pixels of the scratch pixel of the plating remnant,
The image processing means receives the upper / lower image of the task (s) subjected to the ablation processing from the line scan camera 71, divides the image into a plurality of pixels, measures brightness values for each pixel, The pixel is converted into a black-and-white image with reference to the pixel, and then the pixel with the plating layer removed is displayed in black, the pixel with the plating residue is displayed in white,
The positive / negative determination means counts the total number of white pixels of the image and, when the total number of the white pixels exceeds the total limit number of pixels, treats the steel plate S as defective, counts the number of pixels of the white pixel group, The number of pixels of the white pixel group is determined to be defective even if the total number of white pixels of the image is equal to or less than the total number of pixels, Or more, judges the corresponding pixel group as a scratch, and suspends the determination of the defect.
6. The method of claim 5,
When the upper or lower edge of the working end s is not abraded, the judging means judges it as a scratch, and the laser heads 31, 33 corresponding to the corners are moved rearward relative to the input side rail 21 And when the number of white pixels increases sharply on the upper surface or the lower surface of the work stage s, the laser heads 31 and 33 of the surface are adjusted up / down with respect to the input side rail 21 Laser ablation automation system.
6. The method of claim 5,
The quality discrimination unit is further provided with data storage means for storing pixel-processed image information and operating conditions of the laser heads 31 and 33. When a pixel shows a specific pattern in the stored image information, ) In accordance with the operating condition of the laser ablation automation system.

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