JP2800600B2 - Laser processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser processing apparatus for preventing useless pattern information from being transferred to a workpiece.

[0002]

2. Description of the Related Art In general, a laser marking device irradiates a liquid crystal mask with laser light from a laser oscillator, displays pattern information on the liquid crystal mask, and determines the polarization plane of the laser light transmitted through the pattern information and the laser light that is not. When the polarization plane is irradiated on the beam splitter, the beam splitter transmits only the polarization plane of the laser light having the pattern information, irradiates the laser light to the workpiece, and transfers the pattern information to the workpiece, for example, marking and penetrating. Form a hole.

[0003] Whether the pattern information is transferred to the workpiece as set or not is detected by transferring the pattern information to the workpiece as proposed in Japanese Patent Laid-Open No. 2-187288. After confirming whether or not was correct, the decision was made.

[0004]

However, if the pass / fail is determined after transferring the pattern information to the workpiece, not only the workpiece is wasted but also the pattern information is not displayed on the liquid crystal mask. In some cases, the workpiece is wasted by irradiating laser light from a laser oscillator in this state.

An object of the present invention is to provide a laser processing apparatus capable of efficiently transferring a workpiece without waste.

[0006]

A laser processing apparatus according to the present invention irradiates a laser beam from a laser oscillator onto a liquid crystal mask.
And a laser having pattern information displayed on a liquid crystal mask.
Irradiates the workpiece with the light to transfer pattern information to the workpiece.
The display is electrically connected between the laser oscillator and the liquid crystal mask.
When the pattern information is displayed on the display.
Laser with a switch to emit laser light from the oscillator
The processing apparatus, wherein the display unit and a pattern of a liquid crystal mask
Activates the switch when the drive voltage for the information signal is detected.
That is, a voltage detecting unit for causing the voltage to be detected is provided . In addition, the liquid crystal mask is irradiated with laser light from a laser oscillator, the laser light having the pattern information displayed on the liquid crystal mask is irradiated on the work, and the pattern information is transferred to the work. And a switch for emitting a laser beam from a laser oscillator when pattern information is displayed on the display unit.
Therefore, the workpiece transported by the transport unit is positioned and detected.
The transport unit depends on whether or not the
Control unit for controlling the movement of the switch and the operation of the switch.
And there.

[0007]

As described above, according to the present invention, whether the pattern information is correct or not can be determined before the laser beam is emitted, so that the workpiece is not wasted and the transfer efficiency of the laser marking can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an explanatory view showing the internal configuration of the laser marking device main body 1, FIG. 2 shows an operation surface of the laser marking device, and FIG. 3 is a view when viewed from above FIG. Are each shown in FIG. 4 to FIG.

The laser marking apparatus main body 1 shown in FIG. 2 has a control operation section 2 on the operation surface side. The control operation section 2 has the operation switches 3 shown in FIG. The part 7 is attached.

The display unit 7 comprises an operation state area 7A of the laser marking device main body, a file area 7B, a mask pattern area 7C, a print data area 7D, and an external setting area 7E.

Inside this device, there are arranged components constituting the laser marking device shown in FIG. That is, the laser oscillator 10 emits the laser beam 11A from the exit mirror side.

The laser beam 11A is applied to a first bend mirror 12A.
Irradiates the second bend mirror 12B by being bent in a direction perpendicular to the first bend mirror 12A. Second
The laser beam 11A applied to the bend mirror 12B is bent at a right angle, and travels in a direction opposite to the laser beam from the exit mirror. Then, the light passes through the side surface of the laser oscillator by the third bend mirror 12C, is bent downward via the reflection mirror 12D, and irradiates the work 13 such as an IC. The reflection mirror 12D is unnecessary when the laser beam is not bent downward.

In this embodiment, the laser beam 11 is transmitted through the side surface of the laser oscillator 10, so that the long laser beam path 11Y can be compactly formed without elongation, and the laser marking apparatus body can be reduced in size without lengthening. It became so. The detailed configuration of the laser beam path 11Y from the reflection mirror 12D to the workpiece B will be described with reference to FIG.

A laser beam 11 A from a laser oscillator 10 irradiates a liquid crystal mask 15 via a cylindrical lens 14.

The liquid crystal mask 15 displays pattern information to be transferred, for example, A. As the pattern information A, the pattern information A to I of the print data area 7D in FIG. 5 is displayed, but only A is displayed due to space limitations.

In the liquid crystal mask 15, a region where the pattern information A is displayed and a region where the pattern is not displayed are:
The polarization plane of the liquid crystal mask 15 is different.

The laser beam 12A passes through the polarization plane of the liquid crystal mask 15, and a laser beam 12B having a polarization plane having pattern information is emitted from the liquid crystal mask 15 by a beam splitter (not shown). Although the beam splitter is actually arranged on the output side remote from the liquid crystal mask 15, for the sake of explanation, the beam splitter has been described as being emitted from the liquid crystal mask 15.

Only the laser beam 11B having the pattern information A passes through the imaging lens 16 and irradiates the workpiece 13 with the pattern information A, burns the surface of the workpiece 13 and transfers the information, for example, engraving, through-holes and the like. Form.

The power open / close switch 20 is connected to the transport control unit 24 of the power circuit of the motor 23. The transport control unit 24 controls the motor 23 to move and stop the conveyor 25 in a normal state by a signal from the positioning detection device 26 that monitors the position state of the workpiece 13 if the signal is in a normal state. 20 is opened.

The control switch 21 displays pattern information on the liquid crystal mask 15 and the display unit 7, and closes the switch only when the drive voltage at the time of display is detected by the voltage detection unit 22 to detect the drive voltage. Open when not available. Further, the voltage detection unit 22 is provided with a conveyance control unit 24 of a power supply circuit of the motor 23.
Connected to The motor 23 moves the conveyer 25 on which the workpiece 13 is placed, and the conveyer 25 is moved / stopped by the control, for example, on / off of the transport control unit 24 which is monitored using the positioning detection device 26. When the transport control unit 24 detects the drive voltage by the voltage detection unit 22,
The motor 23 operates while the conveyor 25 on which the workpiece 13 is placed is moved to a predetermined position of the positioning detection device 26.

Next, the operation of the laser marking device of the present invention will be described.

The laser oscillator main body 1 drives the display unit 7 when the start switch 3A is turned on. The display section 7 includes an operation state area 7A, a file area 7B, a mask pattern area 7C, a print data area 7D,
The external setting area 7E is displayed at the same time.

The operation state area 7A of the laser marking device main body displays the state of the laser marking device main body, for example, the operation state of the control unit of the laser oscillator 10.

The file area 7B displays the file names of all the pattern information registered in the operation control unit 2, for example, the file names whose transfer contents are known.

The mask pattern area 7C displays the contents of the pattern information selected from the file area 7B.

The print data area 7D displays the same contents as the pattern information displayed on the liquid crystal mask 15.

The external setting area 7E displays the contents of function keys for setting pattern information from the keyboard 6 which can be pulled out from the operation control section 2.

When these displays are completed, the operation control unit 2
The keyboard 6 housed in the box is pulled out.

The procedure for displaying the pattern information to be transferred to the workpiece 13 on the liquid crystal mask 15 will be described with reference to FIGS.

The floppy disk 4 storing the pattern information created by the external pattern information creating device is set in the operation control section 2.

The function key F1 of the keyboard 6 is pressed to select F1: mask pattern reading in the external setting area 7E. When the F1 key is pressed, a screen as shown in FIG. 5 appears, and the display of F1: mask pattern reading in the external setting area 7E is inverted so that it is possible to know which function key is currently selected.

At this time, all the file names of the pattern information stored in the floppy disk 4 are displayed in the file area 7B, and the file name of the pattern information to be registered (inverted display section) is registered using the arrow keys of the keyboard 6. select. The selected pattern information is registered in the operation control unit 2 by pressing an execution key on the keyboard 6. When displaying the contents of the pattern information displayed in the file area 7B of FIG. 7, the file name of the pattern information to be displayed using the arrow keys of the keyboard 6 (inverted display section)
Select The selected pattern information is displayed in the mask pattern area 7C by pressing the execution key of the keyboard 6.

When the pattern information A displayed in the mask pattern area 7C is to be displayed on the liquid crystal mask, the function key F3 of the keyboard 6 is pressed in order to select F3: a print data set in the external setting area 7E. At this time, the pattern information displayed in the mask pattern area 7C is displayed in the print data area 7D as shown in FIG.
At the same time, the same pattern information is displayed on the liquid crystal mask 15.

In addition, the pattern information is transferred to the liquid crystal mask 15.
Can be performed by using a host computer (not shown). In this case, the external setting area 7E is connected with the host computer and the operation control unit 2 connected.
F5: Online may be selected.

The registration of the pattern information and the confirmation of the contents are performed without interruption even when the laser marking device is transferring the pattern information currently displayed in the print data area 7D to the workpiece 13. be able to. Therefore, the pattern information to be transferred next is displayed in the mask pattern area 7C, and the pattern information can be changed immediately.

When the pattern information A is displayed on the print data area 7D and the liquid crystal mask 15, the voltage detection unit 22 closes the control switch 21 and turns on the laser excitation power switch 3B shown in FIG. The output of the circuit 10C turns on. In this state, when the operator turns on the laser irradiation switch 3C, the excitation lamp 10B is turned on, and the laser oscillator 11 emits laser light 11A.

Here, the laser emission mode changeover switch 3
When D is single-shot, light is emitted once, and when D is continuous, continuous emission is performed. The outside can control the laser irradiation switch 3C by a control signal from the transport side.

In this way, the laser beam 11A passes through the liquid crystal mask 14 and is transferred to the workpiece 13 instead of the laser beam 11B.

In this state, when noise enters the control system of the liquid crystal mask 15 or a failure occurs in the operation control unit 2, the pattern information A is stored in the liquid crystal mask 15 and the print data area 7D. When the display is stopped, the voltage detection unit 22 does not detect the drive voltage at the time of the display. At this time, the control switch 21 opens,
Since the output of the AND circuit 10C is turned off, the laser oscillator 10 cannot emit light. Therefore, the workpiece 13 is not irradiated with the laser beam 11B, so that erroneous transfer can be prevented. When the voltage detector is not used, the operator operates the control switch.

At this time, since the transport switch 24 does not operate, the motor 23 does not move and the workpiece 13 does not move, so that useless movement can be prevented.

[0042]

According to the present invention, by providing each area on the display unit attached to the operation control unit, the process of laser marking is displayed, so that the progress can be understood and the operator can feel safe. Can work.

When the pattern information is not displayed in the print data area of the display section, the pattern information is not displayed on the liquid crystal mask, so that the laser beam is not emitted from the laser oscillator, and the workpiece is wasted. Can now be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating the inside of a laser marking device main body shown in FIG. 2 of the present invention.

FIG. 2 is an external perspective view showing the entire laser marking device main body of the present invention.

FIG. 3 is a plan view when FIG. 1 of the present invention is viewed from above.

FIG. 4 is a front view of a control operation unit shown in the display unit of FIG. 1 of the present invention.

FIG. 5 is a detailed explanatory view of a display unit of FIG. 1 of the present invention.

FIG. 6 is a perspective view showing the keyboard of FIG. 1 of the present invention.

FIG. 7 is a detailed explanatory diagram of the display unit of FIG. 1 of the present invention.

[Explanation of symbols]

2 ... Control operation unit, 7 ... Display unit, 10 ... Laser oscillator, 1
1, 11A, 11B: laser beam, B: workpiece, 15:
Liquid crystal mask, 21 ... Control switch.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koji Kuwahara 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Within Hitachi Research Laboratory, Hitachi, Ltd. (56) References JP-A-56-38888 (JP, A) JP-A-5-309482 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23K 26/00 B23K 26/06

Claims (6)

(57) [Claims] A laser beam from a laser oscillator is applied to a liquid crystal mask, a laser beam having pattern information displayed on the liquid crystal mask is applied to a workpiece, and the pattern information is transferred to the workpiece. The display is electrically connected between the LCD and the liquid crystal mask, and a switch is provided to emit laser light from the laser oscillator when pattern information is displayed on the display.
Laser processing apparatus, wherein the display unit and the liquid crystal mask are separated.
When the drive voltage for the turn information signal is detected, the switch
A laser processing apparatus comprising a voltage detecting unit for operating the laser processing device. 2. A laser beam from a laser oscillator is applied to a liquid crystal mask, a laser beam having pattern information displayed on the liquid crystal mask is applied to a workpiece, and the pattern information is transferred to the workpiece. The display is electrically connected between the LCD and the liquid crystal mask, and a switch is provided to emit laser light from the laser oscillator when pattern information is displayed on the display.
Laser processing device, wherein the
When the workpiece comes to the specified position of the specified position detection device
The movement of the transport unit and the operation of the switch depending on whether or not
Laser processing device provided with a control unit for controlling the laser processing. 3. Conveying the workpiece according to claim 1.
Predetermined stop of work piece by positioning detection device of transport unit
When the deviation from the position is detected, the laser excitation power supply circuit
A laser processing apparatus provided with a transport switch for stopping a switch inside the laser processing apparatus. 4. The display unit according to claim 1, wherein the display unit has a mask panel.
A laser processing apparatus having a turn area and a print data area . 5. The laser display according to claim 1, wherein
The operation state area indicating the operation state of the
A laser processing apparatus provided with an external setting area shown in FIG. 6. A liquid crystal mask using laser light from a laser oscillator.
And has the pattern information displayed on the liquid crystal mask.
The workpiece is irradiated with a laser beam
A laser beam path for transferring information, said laser beam path being a laser beam path.
Passes through the oscillator side, a laser processing device comprising a this <br/> irradiating a laser beam to the workpiece.