KR200296904Y1 - Laser Machine for processing slits - Google Patents

Abstract

A laser processing machine for slit processing is disclosed that makes it possible to clarify the shape of a slit photographed by a camera during laser processing to facilitate comparative reading by image data. The present invention is a laser processing machine comprising a bed and a camera for photographing the shape of the slit processed by the laser beam on the board to be transported on the bed, the bed on the slit by the camera to generate light when the slit peripheral portion It is characterized in that the lighting means is installed to project. According to the present invention described above, since the resolution of the image data photographed by the camera during laser processing can be increased, it becomes easy to read the upper and lower widths of the slits processed on the board.

Description

Laser Machine for processing slits

The present invention relates to a laser processing machine, and more particularly, to a laser processing machine for slit processing, which makes it possible to more easily perform comparative reading by image data by clarifying the shape of the slit photographed by a camera during laser processing.

In general, the paper box for packaging the contents is produced by folding a thick sheet of paper, in order to fold the paper plate to form a folding line by pressing the inner portion of the paper plate to a certain depth, to fit the required box shape. So that the outside is cut.

As such, in order to cut the box-shaped outline on the paper plate or to form a certain fold line on the paper plate, the shape of the outline or fold line of the box on a die board made of a wood material such as plywood is usually used. A series of slits are machined to fit a cutting blade on the slit, and then pressed into a box-shaped paper board with a die board fitted with the cutting blade.

On the other hand, when forming the slit for mounting the cutting blade on the die board, various slit processing methods can be employed, but the processing method using a laser processing machine is widely used.

However, when the slits are processed using a laser processing machine as described above, the widths of the upper and lower surfaces of the processed slits are frequently not constant due to the focal length of the laser beam irradiated on the die board and the feeding speed of the die board. In this case, it becomes very difficult to insert the cutting blade into the processed slit.

For this reason, a separate optical sensor for detecting the width of the upper and lower surfaces of the slit processed by the laser light during laser processing is provided in real time, and the image data detected by the optical sensor is compared and read by the controller. By adjusting the focal length of the laser light or by appropriately adjusting the feed speed of the board, the upper and lower widths of the slit can be kept almost constant (see Korean Patent Publication No. 95-23480).

However, in the conventional laser processing machine as described above, when photographing the shape of the upper and lower surfaces of the slit processed on the board through the camera, the upper surface side of the slit is exposed to the outside so that the amount of illuminance is secured so that the photographed image Although it is clear enough, the lower surface side of the inside of the slit is very dark, so that the shape of the lower surface of the photographed slit is not clear, so there is a problem in that the upper and lower surfaces of the slit are not easily read and compared.

In addition, when laser processing is performed in a dark working environment, slit photographing by a camera is practically impossible, and therefore, machining errors between upper and lower surfaces of the slit are impossible to perform, thus performing more precise slit processing. There was a problem that could not be done.

Accordingly, the present invention was devised to solve the above problems, and an object of the present invention is to install a lighting device along a moving trajectory of the camera on a bed located directly below the camera to increase the roughness of the slit periphery during slit shooting. The present invention provides a slit laser processing machine capable of performing a more precise slit processing operation by clarifying image data of upper and lower surfaces of a slit photographed by a camera.

1 is a perspective view showing a laser processing machine according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of the laser head unit in FIG. 1; FIG.

Figure 3 is a perspective view showing in more detail the structure of the clamping unit in FIG.

Figure 4a is a front view of Figure 3, an enlarged view showing the periphery of the fixed side plate.

FIG. 4B is a front view of FIG. 3 showing an enlarged view of the movable plate periphery; FIG.

5 is a view showing a lighting device installation structure and a gas discharge structure in FIG.

6 is a partial cross-sectional view showing a cross-sectional structure in the A-A section direction in FIG.

Figure 7 is a rear view showing the back structure of the laser processing machine according to the present invention.

8 is a block diagram showing a slit processing process using a laser processing machine according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: Bed 110: Board

200: clamping unit 210: fixed side plate

220: movable side plate 230: cross rail portion

240: slide block 250: timing belt

260: pulley drive shaft 270: pulley drive motor

300: control unit 400: laser generation unit

420: oscillator 440,460: first and second light guide portion

462,466: 1st, 2nd light guide tube 464: lens housing

468: nozzle cap 469: horizontal end

480: condenser lens lifting unit 481, 491: support bracket

482,493: Screw shaft 483,494: Drive motor

484: Nut block 486,495: Guide rod

488a, 488b: Vertical, horizontal link 489,492: Guide block

490: Camera lifting unit 500: X axis transfer unit

600: Y-axis transfer unit 700: Camera

720: potentiometer 800: lighting device

900 gas outlet 1000 laser processing machine

The laser processing machine of the present invention for achieving the above object is a laser processing machine comprising a bed and a camera for photographing the shape of the slit processed by the laser beam on the board to be transported on the bed, the bed on the camera It is characterized in that the lighting means for generating light when the slit photographing by the projection to the periphery of the slit is installed.

A horizontal plate is installed on an upper surface of the bed, and an opening is formed in the horizontal plate to correspond to the movement trajectory of the camera and is formed to be long perforated along the X-axis direction, and an accommodating space is provided below the opening to accommodate the lighting means. Is formed.

The laser processing machine according to the present invention is installed on a bed and clamps a board, a Y-axis transfer unit for transferring the clamping unit in the Y-axis direction of the bed, a laser oscillator and a condenser lens installed on the bed. And a laser generating unit for generating a laser beam and irradiating the board to process a slit of a predetermined shape, an X-axis feeding unit for feeding the laser generating unit in the X-axis direction of the bed, and the X-axis feeding unit, Y It further comprises a control unit for controlling the axis transfer unit and the laser generating unit, respectively.

In addition, the laser processing machine is interlocked with the laser generating unit and the condenser lens lifting unit for adjusting the focal length of the condensing lens, and the camera lifting unit for lifting the camera to shoot the upper and lower surfaces of the slit in conjunction with the laser generating unit It includes more.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention in detail as follows.

1 is a perspective view showing a laser processing machine according to an embodiment of the present invention, Figure 2 is an enlarged perspective view showing a part of the laser generating unit in detail in the laser processing machine shown in FIG.

1 and 2, a clamping unit 200 for clamping the board 110 is installed on an upper portion of the bed 100, and the clamping unit 200 is connected to the bed through a Y-axis transfer unit 600. It is conveyed in the Y-axis direction (henceforth a front-back direction) of 100.

On the rear upper side of the bed 100, the X-axis transfer frame 120 is installed with a predetermined distance that does not cause direct interference with the clamping unit 200, and the X-axis direction on the upper surface of the X-axis transfer frame 120 A pair of rails 122 arranged long along the following (hereinafter referred to as a left and right direction) are fixed.

In addition, the X-axis transfer frame 120 is provided with an X-axis transfer unit 500 for transferring the laser generating unit 400 to be described later in the left and right directions of the bed (100). The X-axis transfer unit 500 is configured to include a screw shaft 520 disposed in the left and right directions of the bed 100, and the X-axis transfer motor 540 for rotating the screw shaft 520 at a constant speed. .

Specifically, a pair of sleeves 124 are provided on one side of the upper surface of the X-axis transfer frame 120 fixed to each other at a predetermined distance in the left and right directions, each of the screw shaft 520 Both ends are rotatably supported.

In addition, one end of the screw shaft 520 is connected to a control unit (not shown), which allows the forward and reverse rotation of the X-axis feed motor 540 to rotate the screw shaft 520 at a constant speed according to a command of the controller. ) Is connected.

On the other hand, the laser generating unit 400 is a laser oscillator 420 for generating a laser light, the first light guide portion 440 and the first light guide portion 440 to deflect the laser light generated from the laser oscillator 420 to the downward A second light guide portion 460 for collecting the laser light guided from the light guide portion 440.

On the bottom of the laser oscillator 420, a support 424 provided on the bottom surface of the rail guide 422 is fixed, and the rail guide 422 is engaged with the rail 122 on the X-axis transfer frame 120. The bed 100 is slidable in the left and right directions.

Although not shown in the drawings, a nut block having a screw hole formed in the center portion of the laser oscillator 420 is fixed to the center of the bottom portion of the laser oscillator 420 so as to be screwed to the outer peripheral portion of the screw shaft 520.

Accordingly, when the X-axis feed motor 540 is driven through a control unit, the nut block engaged with the screw shaft 520 rotates the screw shaft 520 in the forward or reverse direction, and the screw shaft 520 is moved. Therefore, the laser oscillator 420 may be reciprocated in the left and right directions along the rail 122 on the X-axis transfer frame 120 because the relative movement is performed in the left and right directions.

On the other hand, the first light guide portion 440 is communicated in a downward bending to the front portion of the laser oscillator 420, the lower portion of the first light guide portion 440 to the bed (1) for the first light guide portion 440 ( The second light guide portion 460 is provided to communicate with each other so as to be movable in the Z-axis direction (hereinafter referred to as an up-down direction).

In this case, a plate 426 supporting them is interposed between the first light guide part 440 and the second light guide part 460, and the plate 426 protrudes a predetermined distance toward the front of the laser oscillator 420. It is fixed on the support frame 428 mounted to the bottom of the laser oscillator 420 to form a single unit.

Specifically, the first light guide portion 440 is provided with a deflection mirror 442 for deflecting the laser light generated from the laser oscillator 420 vertically downward, the laser beam deflected through the deflection mirror 442 is hollow It is led downward through the cylinder 444, which is a moving passage of the mold.

The second light guide part 460 is coupled to a first light guide pipe 462 mounted to the lower portion of the cylinder 444 of the first light guide part 440, and a lower end of the first light guide pipe 462. A lens housing 464 having a condenser lens for condensing laser light deflected downward by the deflection mirror 442 therein, and a laser light coupled to a lower end of the lens housing 464 and passing through the condenser lens inside It comprises a second light guide tube 466 having a nozzle which is emitted to the outside.

In addition, a lower end of the second light guide pipe 466 is provided with a nozzle cap 468 mounted to be elevated along the outer surface of the second light guide pipe 466, the top of the outer surface of the nozzle cap 468 is A horizontal end 469 protruding a predetermined length in the radial direction of the nozzle cap 468 is integrally formed.

On the other hand, the laser generating unit 400 includes a condenser lens lifting unit 480 for changing the position of the condenser lens to adjust the focal length of the laser light directly irradiated on the board (110).

The condenser lens lifting unit 480 includes a screw shaft 482, a driving motor 483 for rotating the screw shaft 482, and a nut block 484 screwed on an outer circumference of the screw shaft 482. Include.

The driving motor 483 is fixed to an upper surface of the support bracket 481 supported by the upper surface of the plate 426, and is connected to a control unit (not shown) to fix the screw shaft 482 according to the command of the control unit. Rotate in the reverse direction.

At this time, between the drive motor 483 and the screw shaft 482, the shaft of the drive motor 483 and the screw shaft 482 so that the driving force of the drive motor 483 is transmitted to the screw shaft 482 Coupling (485a) is provided to connect the, and also, the bearing (485b) for supporting so as not to flow left and right when the screw shaft 482 is rotated is installed.

The nut block 484 is provided with a screw hole (not shown) for coupling with the screw shaft 482 therein, and is capable of lifting up and down along the screw shaft 482, and guides on the left and right sides of the screw hole. A rod 486 is coupled, and a horizontal member 487 is coupled to a lower end of the guide rod 486 so that the horizontal member 487 is interlocked with each other when the nut block 484 is elevated.

In addition, a vertical link 488a is coupled to a lower surface of the horizontal member 487, and a horizontal link 488b coupled to an upper end of the lens housing 464 is coupled to a lower end of the vertical link 488a. The ascending and descending of 487 is also linked.

On the other hand, the inner surface of the support bracket 481 located on the horizontal member 487 serves to support the screw shaft 482 and the guide rod 486 and to limit the rising width of the horizontal member 487. The guide block 489 for performing this is fixed.

To this end, although not shown in the drawings, a screw shaft receiving groove is formed in the guide block 489 so that the screw shaft 482 can be rotatably supported in the guide block 489. On the left and right of the screw shaft 482, a through hole for penetrating the guide rod 486 up and down is formed.

According to this configuration, when the driving motor 483 is operated through the control unit, while the screw shaft 482 is rotated in the forward or reverse direction, the lifting operation of the nut block 484 along the screw shaft 482 is made. .

At this time, as the nut block 484 is raised and lowered, the first light guide tube 462 is interlocked and lifted into and out of the cylinder 444, and thus the focal length of the laser beam according to the positional change of the condenser lens provided in the lens housing 464. The adjustment is performed. Accordingly, the size of the upper surface width and the lower surface width of the slit processed in the board 110 through the laser light can be freely adjusted.

On the other hand, the camera 700 which is a sensing means for detecting the shape of the processed slit is fixed to the outer surface of the lens housing 464 through the support bracket 491. The camera 700 is electrically connected to the control unit, and photographs the upper and lower surfaces of the processed slit through a laser beam, and transmits the upper and lower image data of the photographed slit to the control unit in real time.

The camera 700 is a lifting operation through the camera lifting unit 490. Specifically, the camera lifting unit 490 is fixed to the screw shaft 493, the drive motor 494 and the camera 700 for rotating the screw shaft 493 is engaged with the outer peripheral portion of the screw shaft 493 It includes a guide block 492 coupled.

The driving motor 494 is fixed to an upper surface of the support bracket 491 and is connected to a control unit (not shown) to rotate the screw shaft 493 in the forward / reverse direction according to the command of the control unit.

At this time, a coupling 496 and a bearing 497 are provided between the driving motor 494 and the screw shaft 493 as in the condensing lens lifting unit 480 described above.

In addition, the guide block 492 is formed with a screw hole (not shown) to be screwed into the outer peripheral portion of the screw shaft 493 therein, and the bearing 497 and the support bracket ( It has a through hole (not shown) for receiving the guide rods 495 supported between the 491. The guide rod 495 guides the position of the guide rod 495 so that the guide block 492 does not flow left and right when the guide block 492 is raised and lowered.

According to such a configuration, when the driving motor 494 is operated through the control unit, as the screw shaft 493 is rotated in the forward or reverse direction, lifting and lowering of the guide block 492 where the camera 700 is fixed is made. (110) makes it easy to photograph the upper and lower surfaces of the slit processed on the upper surface.

On the other hand, the nozzle cap 468 maintains an integrated contact state with the surface of the board 110 during laser processing, and at the same time to prevent the laser light is directly exposed to the operator while performing a protective function of the nozzle.

The first vertical bar 471 is fixed to the horizontal end 469 of the nozzle cap 468 so as to stand upright, and the upper end of the first vertical bar 471 is a slide block through a plate-shaped connecting member (not shown). 477 is combined.

In addition, the slide block 477 is formed with a rail groove (not shown) on one side, the rail groove is to be engaged with the outer surface of the guide rail 476 provided on the inner surface of the support bracket 475, the guide It is provided so that it can slide up and down along the rail 476.

Accordingly, when the nozzle cap 468 is in contact with the surface of the board 110 during laser processing and is elevated along the outer surface of the second light guide tube 466 by irregular bending of the surface of the board 110, the nozzle cap 468 From the horizontal end 469, the first vertical rods 471 and the slide block 477 is connected to one combination to perform the lifting operation in the vertical direction, and in addition, the slide block 477 in this process The relative linear movement between the guide rail 476 and the guide rail 476 can perform a smooth lifting operation without shaking in the left and right directions.

On the other hand, since the connecting member connecting the first vertical bar 471 and the slide block 477 is usually kept in a state that is simply over the upper surface of the plate 426, the first vertical bar 471 is moved downward Limited. However, during the laser processing, since the nozzle cap 468 makes contact with the surface of the board 110 and the connecting member is spaced apart from the upper surface of the plate 426 by a predetermined distance, the nozzle cap ( 468) The lifting movement can be freely performed within this limited range.

In addition, a cylinder 474 is fixedly installed on the bent upper surface of the support bracket 475, and a third portion having a piston (not shown) at the upper end of the support bracket 475 is provided at the upper end to reciprocate the inside of the cylinder 474. The vertical bar 473 is mounted.

And, although not shown, the cylinder 474 is connected to the external fluid supply means connected to the control unit, and receives the fluid pressure from the fluid supply means to move the internal piston up / down to the third The vertical bar 473 is configured to perform the lifting operation about the cylinder 474.

In addition, a second vertical bar 472 is connected to a lower end of the third vertical bar 473, and a lower end of the second vertical bar 472 may be hooked to one side of a bottom portion of the connecting member. The hook (not shown) bent in a 'shape' is integrally formed.

Accordingly, when the piston is moved in the ascending direction in the cylinder 474, the hook of the second vertical rod 472 is raised over the bottom of the connecting member, so that the synergistic action of the nozzle cap 468 interlocked with the connecting member. This is done.

Likewise, when the piston is moved in the downward direction, the slide block 477, the first vertical rod 471, and the nozzle cap 468 receive the self-weight of the coupling body and the connecting member descends while being placed on the hook nozzle 468. The descent of is done.

Of course, during the laser processing, the bottom portion of the connecting member should be set to be spaced apart from the upper portion of the hook by a certain distance so that the nozzle cap 468 can freely move along the surface of the board 110.

By such a configuration, when the laser processing is performed while the nozzle cap 468 is in contact with the surface of the board 110, the self-weight of the nozzle cap 468 due to the surface bending of the board 110 may be reduced. Voluntary hoisting action takes place.

On the other hand, in the case of laser processing, if you need to temporarily lift the nozzle cap 468 to move the processing area on the board 110, or to replace the nozzle cap 468 to replace the other board 110, the control unit By driving the cylinder 474 through it, it is possible to perform a forced up / down action of the nozzle cap 468. In this case, since the lifting and lowering action of the nozzle cap 468 can be induced at an appropriate timing according to an algorithm programmed in the controller during the laser processing, the automation of the device can be more easily implemented.

On the other hand, the second light guide unit 460 detects the vertical movement displacement of the nozzle cap 468 according to the minute surface curvature of the board 110 during laser processing to properly compensate for the focal length of the condenser lens and the focal length of the camera. Potentiometer 720 is provided to give.

At this time, the potentiometer employed in the present invention is a kind of variable resistor, and adopts a conventional potentiometer for converting a change in resistance value due to a position change into a corresponding voltage value.

The potentiometer 720 includes a main body 722 and a probe 724 which is lifted from the main body 722 and is electrically connected to a control unit (not shown). At this time, the main body 722 is fixed on the outer surface of the lens housing 464, the probe 724 is supported on the first vertical rod 471 through the guide member 726 of the nozzle cap 468 The direct contact with the upper surface of the horizontal end 469 is maintained.

By such a structure, if the repetitive lifting action of the nozzle cap 468 according to the surface curvature of the board 110 during laser processing is made, in contact with the horizontal end 469 in conjunction with the nozzle cap 468 As the probe 724 is repeatedly raised and lowered, the vertical displacement of the nozzle cap 468 is transmitted to the controller in real time.

In addition, the control unit operates the respective driving motors 483 and 494 provided in the condenser lens lifting unit 480 and the camera lifting unit 490 according to the signal value detected by the potentiometer 720 to control the laser beam. By appropriately adjusting the focal length and the focal length of the camera in real time to minimize the upper and lower surface measurement error and processing error of the slit due to minute surface curvature of the board (110).

On the other hand, Figure 3 is a perspective view showing the structure of the clamping unit 200, in particular, in the laser processing machine 1000 shown in FIG. 4A is a front view of FIG. 3, which is an enlarged view of a fixed side plate periphery, and FIG. 4B is an enlarged view of a movable side plate periphery.

3, 4A, and 4B, the clamping unit 200 includes a fixed side plate 210 supporting one side wall surface parallel to the Y-axis direction of the board 110, and an X-axis of the bed 100. And a movable side plate 220 which is transported along the direction and supports the other side wall surface of the board 110 opposite to the fixed side plate 210.

Specifically, the fixed side plate 210 is fixed to the upper surface of the transfer plate 130 slidably seated on the bed 100, the lower support plate 234 which will be described later on the end of the transfer plate 130 The vertical connecting plate 238 connected vertically to the vertical) is fixed upright, and the reinforcing member 239 is coupled inside the vertical connecting plate 238.

In addition, a pair of cross rails 230 disposed in a direction perpendicular to the conveying direction of the board 110 is provided on the bed 100. The cross rail unit 230 includes a guide beam 231 and a pulley housing 232 coupled to both ends of the guide beam 231.

In addition, an upper support plate 233, a lower support plate 234, and a rail guide 235 are sequentially coupled to one side of a bottom portion of the guide beam 231, and the rail guide 235 is disposed on an upper surface of the bed 100. It is seated on the rail 150 fixed to the rail base 140 parallel to the Y-axis direction is to be able to slide in the front and rear direction of the bed 100.

On the other hand, both ends of the movable side plate 220 is coupled to each of the slide block 240 having a predetermined shape, the upper surface of the slide block 240 to form a rail portion (not shown) and guide beam 231 A rail groove (not shown) is formed in the bottom portion of the rail to engage the slide block 240 to allow linear reciprocating motion along the X-axis direction at the bottom portion of the guide beam 231.

In addition, the pulley housing 232 coupled to both ends of the guide beam 231 is formed by a horizontal reinforcement plate 237 and a vertical reinforcement plate 236 to improve structural coupling rigidity with the guide beam 231. Reinforced secondary reinforcement structure.

Although not shown in the drawings, in the pulley housing 232 provided at both ends of the cross rail portion 230, a driving pulley and a driven pulley having a plurality of teeth formed on the outer circumference thereof are rotatably supported, respectively. The driving pulley and the driven pulley are interconnected through the timing belt 250, so that when the driving pulley is rotated, the driven pulley is configured to interlock naturally.

In addition, the timing belt 250 is fixed to each other so that the slide block 240 mounted on the bottom surface of the guide beam 231 does not flow left and right, and the driving pulleys provided in each cross rail part 230 The pulley drive shaft 260 is coupled to each other at the center, and a pulley drive motor 270 connected to the controller is spoken at one end of the pulley drive shaft 260.

According to this configuration, when the pulley drive motor 270 is operated through the control unit, the driving pulley coupled to the pulley drive shaft 260 is rotated while the driven pulley connected through the timing belt 250 is rotated. When the timing belt 250 is moved in the X-axis direction, the slide block 240 coupled thereto is interlocked and transferred, and the movable side plate 220 coupled with the slide block 240 is fixed to the plate 210. The clamping operation of the board 110 is made by forcibly transferring to the side.

Such a variable clamping structure is free from the size of the board 110 as a workpiece and can freely clamp the board 110 of various sizes, so that the clamping means can be replaced one by one according to the size of the board 110 as in the related art. This can eliminate the hassle of using.

In the above embodiment, as a means for transferring the movable side plate 220 to the fixed side plate 210 side, the movable side plate by the movement of the belt 250 connected to the drive pulley and the driven pulley in accordance with the rotation of the pulley drive shaft 260. Although the structure in which the 220 is forcibly conveyed is adopted, in addition to the pneumatic or hydraulic cylinder which is operated by the driving force of the motor, the movable side plate 220 is fixed to the fixed side plate 210 by linear reciprocating motion of the piston. It is also possible to adopt a method of forcibly feeding in the direction.

On the other hand, the laser processing machine 1000 of the present invention includes a Y-axis transfer unit 600 for transferring the clamping unit 200 in the front and rear direction of the bed (100).

The Y-axis transfer unit 600 is a screw shaft 620 disposed in parallel with the Y-axis direction, the Y-axis feed motor 640 for driving the screw shaft 620 and the outer peripheral portion of the screw shaft 620 It comprises a nut block 660 coupled to.

Specifically, one end of the screw shaft 620 is rotatably supported by the bracket 160 fixed on the bed 100, the other end by the sleeve 180 fixed on the support block 170, the bracket The back of the 160 is coupled to the Y-axis feed motor 640 for rotating the screw shaft 620 in the forward or reverse direction according to the command of the controller. In addition, the nut block 660 has a screw hole (not shown) to form a screw coupling with the outer peripheral portion of the screw shaft 620, one end is fixed to one end of the cross rail portion 230 located at the rear.

According to this structure, when the Y-axis feed motor 640 is driven through the control unit, while the screw shaft 620 is rotated in the forward / reverse direction, the nut block 660 engaged with the screw shaft 620 is the screw shaft Relatively transported along 620, the cross rail 230 coupled to the nut block 660 is interlocked and reciprocally transported on the rail 150.

On the other hand, Figure 5 is a laser processing machine 1000 according to the present invention, in particular, a view illustrating an installation structure and a gas discharge structure of the lighting apparatus, Figure 6 is a partial cross-sectional view showing a cross-sectional structure of the AA section direction in FIG. to be. 7 is a rear view showing the rear structure of FIG. 5.

5 to 7, the bed 100 is provided with an illumination device 800 for generating light from the lower part of the board 110 and projecting to the periphery of the slit during the slit photographing by the camera 700.

The lighting device 800 includes a lamp unit 830 for generating light and a reflecting plate 850 for reflecting light generated from the lamp unit 830. In addition, although not shown, the lamp unit 830 includes a lamp and an electrode connected to an external power source to apply power to the lamp.

In detail, an opening 810 is formed on the horizontal plate 190 disposed directly below the camera 700 to correspond to the movement trajectory of the camera 700 and is formed to be long in the X-axis direction. In the lower portion, a lamp receiving portion 840 in which the lamp unit 830 is housed is mounted on a front portion of the horizontal plate 190.

In addition, a lower portion of the lamp unit 830 is provided with a reflecting plate 850 to reflect the light generated from the lamp unit 830 toward the opening 810 to improve the efficiency of the light, the opening 810 The lamp unit 830 is closed through the lamp cover 820 in a state where the lamp unit 830 is accommodated in the lamp accommodating part 840.

Accordingly, since the light generated from the lamp unit 830 is concentrated on the slit periphery located directly below the camera 700 at the lower portion of the board 110, the slit taken through the camera 700 The shape is clear, which makes it easier to read and compare machining errors between the upper and lower slits.

In particular, when the laser processing operation is performed in a dark environment, since the lamp performs the same function as the flash of the camera, the reading of the image data of the photographed slit becomes clear, thereby providing more effective photographing efficiency.

On the other hand, the laser processing machine 1000 according to the present invention has a gas discharge structure for discharging the harmful gas generated in the laser processing process to the outside.

That is, on the horizontal plate 190 located directly below the nozzle provided in the second light guide tube 466, the gas outlet 900 has a predetermined width and length, corresponds to the movement trajectory of the nozzle, and is punctured along the X-axis direction. ) Is formed.

In addition, the lower portion of the gas discharge port 900 is provided with a duct 910 is formed in the bottom portion of the horizontal plate 190 to form a predetermined closed space, one side of the duct 910 is an external indentation blower ( A communication tube 920 communicating with the not shown) is provided.

Accordingly, the noxious gas generated during laser processing is forcibly introduced into the gas discharge port 900 by the suction force through the press-fit blower and temporarily stays in the duct 910 and then discharged to the outside through the communication tube 920.

In addition, by forming a gas outlet (not shown) having a predetermined diameter on the outer surface of the lens housing 464 and configured to be in communication with the press-in blower through a connecting means such as a hose, harmful gas generated during laser processing The gas discharge efficiency may be doubled by allowing the gas discharge ports to be discharged to the outside through the respective gas discharge ports in the upper and lower portions of the board 110.

Hereinafter, the operation of the present invention having the above-described configuration will be described in detail with reference to the accompanying drawings.

8 is a block diagram showing the overall slit processing process by the laser processing machine 1000 of the present invention.

Referring to FIG. 8 and the aforementioned drawings, as a preliminary step before laser processing, first, the board 110 is seated on the horizontal plate 190 of the bed 100 so that one side wall surface of the board 110 is fixed. In a state of being in close contact with the plate 210, the plate 110 is completely clamped by transferring the movable side plate 220 to the fixed side plate 210 through the pulley driving motor 270.

Thereafter, the board 110 is transferred at a constant speed in the front and rear directions (Y-axis directions) of the bed 100 through the Y-axis transfer unit 600 according to an algorithm set in advance in the control unit 300, and at the same time generates a laser. Unit 400 is a continuous form of a predetermined form on the board 110 through the laser beam emitted from the nozzle while being transferred at a constant speed in the left and right directions (X-axis direction) of the bed 100 through the X-axis transfer unit 500 Slitting is achieved.

At the same time, the camera 700 which is interlocked with the laser generating unit 400 is moved by an appropriate distance along the vertical direction (Z-axis direction) through the camera lifting unit 490 and the upper surface of the slit processed through the laser light and When the shape is sequentially photographed, the captured image data is transmitted to the control unit 300 in real time.

In addition, the controller 300 reads and compares each image data of the slit photographed by the camera 700 and maintains the current processing condition when the upper surface width P1 and the lower surface width P2 of the slit match. When the upper surface width P1 and the lower surface width P2 of the slit are different from each other, the driving motor 483 in the condensing lens lifting unit 480 is operated to adjust the focal length of the laser beam or the Y axis transfer unit ( By operating the Y-axis feed motor 640 in 600 to properly control the feed rate of the board 110, the upper and lower surfaces of the slit (P1, P2) is maintained to be substantially constant.

In addition, as the nozzle cap 468 makes continuous contact with the surface of the board 110 according to the transfer of the board 110, the potentiometer 720 may be exposed to minute surface bending of the board 110. The vertical displacement width of the nozzle cap 468 is sensed in real time and then sent to the controller 300.

In this case, the controller 300 drives the motor 483 in the condensing lens lifting unit 480 and the driving motor 494 in the camera lifting unit 490 by a value corresponding to the vertical displacement width of the nozzle cap 468. By adjusting the focal length of the laser light and the focal length of the camera 700 to operate properly, even the measurement error and processing error due to minute bending of the surface of the board 110 can be corrected in real time.

According to the present invention described above, the following effects can be obtained.

First, when photographing a slit processed by a laser beam, the brightness of the slit portion is intensively increased by a light source generated from a lighting device located at the bottom of the board, so that the image of the slit photographed by the camera becomes clearer. Therefore, it is easy to read and compare machining errors between the upper and lower surfaces of the slit.

Second, during laser processing, the camera lifting unit is used so that the width of the upper and lower surfaces of the slit processed by the laser light can be sequentially taken while controlling the vertical movement width of the camera. Since the work performed by the two cameras provided at the upper and lower portions of the camera can be replaced by one camera, the device configuration of the laser processing machine can be more compactly configured.

Third, during the slit processing, the vertical displacement of the nozzle cap according to the surface curvature of the board is sensed in real time through the potentiometer, and accordingly, the fine curvature of the surface of the board is controlled by appropriately adjusting the focal length of the laser beam and the focal length of the camera. Measurement errors and machining errors can be processed in real time by correcting them.

Fourth, when clamping the board, it is possible to clamp the board together with the fixed side plate by moving the movable plate through the pulley drive motor, so that the board can be clamped smoothly without being affected by the size of the board. Depending on the size of the board, you can eliminate the hassle of replacing the clamps individually.

Fifth, since the harmful gas generated in the laser processing process can be easily discharged to the outside through the gas discharge port and the duct by the forced suction force by the indentation blower has the advantage of maintaining a more comfortable working environment.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the present invention described in the claims below And that it can be changed.

Claims (4)

In the laser processing machine comprising a bed and a camera for photographing the shape of the slit processed by the laser beam on the board transported on the bed, The slit laser processing machine, characterized in that the lighting means for generating light when the slit photographed by the camera to project to the periphery of the slit on the bed. According to claim 1, The upper surface of the bed is provided with a horizontal plate, The horizontal plate is formed in the horizontal plate corresponding to the movement trajectory of the perforated long along the X-axis direction, the lower portion of the lighting means Laser processing machine for slit processing, characterized in that the receiving space is formed to accommodate the. The method according to claim 1 or 2, A clamping unit installed on the bed and clamping the board; A Y-axis transfer unit for transferring the clamping unit in the Y-axis direction of the bed; A laser generating unit installed above the bed, having a laser oscillator and a condenser lens, for generating a laser beam and irradiating the board to process a slit of a predetermined shape; An X axis transport unit for transporting the laser generation unit in the X axis direction of the bed; And A control unit for controlling the X-axis transfer unit, the Y-axis transfer unit, and the laser generation unit, respectively; Laser processing machine for slit processing, characterized in that further comprises a. 4. The camera of claim 3, further comprising: a condenser lens elevating unit interlocked with the laser generating unit and adjusting a focal length of the condenser lens; and a camera elevating the camera to photograph the upper and lower surfaces of the slit in conjunction with the laser generating unit. A laser processing machine for slit processing, characterized in that further comprising a lifting unit.