JPH04251683A - Laser marking device - Google Patents

Abstract

PURPOSE:To provide the laser marking device which can exchange an arrange ment in a short period of time in order to change marking contents. CONSTITUTION:This laser marking device is constituted to mark the character along the marking pattern appearing in a dispersion type liquid crystal 6 on a work 9 by irradiating the work 9 with a laser beam of a YAG laser oscillator 1 via the dispersion type liquid crystal 6 while scanning the laser beam in X-and Y-directions. The above-mentioned device is so constituted that memory cards 13a, 13b can be accessed in a bus line to a CPU 12 for controlling the controller of the above-mentioned scanning device and the dispersion type liquid crystal 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser marking device for printing, engraving, or other markings on a plate material such as an IC board using a laser beam.

0002

2. Description of the Related Art In conventional laser marking devices, marking characters are input using a personal computer. That is, the memory contents were read from or written to a hard disk or floppy disk attached to the personal computer.

0003

[Problems to be Solved by the Invention] In the conventional marking character input described above, writing and reading of track sectors are selected using a magnetic head, which takes a lot of time. The problem is that it takes a long time. In recent years, laser marking apparatuses have made it possible to perform high-speed marking by using a polygon mirror in the laser scanning system, but it is desired that the time required for the above-mentioned setup be reduced accordingly.

[0004] The present invention has been developed in consideration of the above-mentioned problems, and allows marking contents to be read from or written to memory at an extremely high speed of 10 to 30 times that of a conventional personal computer. Therefore, setup change when changing the marking contents can be done in a short time, and the input memory card can copy the same marking contents to multiple memory cards at the same time, preventing carelessness of the memory contents of the memory card. The object of the present invention is to provide a laser marker device that can ensure safety against erasure.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a laser marking device that uses a scanning device to scan laser light from a YAG laser oscillator.
A laser marking device that marks a character on a workpiece along a marking pattern that appears on the dispersion liquid crystal by irradiating the workpiece through a dispersion liquid crystal while scanning in a direction, which combines the scanning device and the dispersion type CP that controls the LCD controller
A memory card is made accessible to U via a bus line. Also, a plurality of connectors for connecting the memory cards of the CPU are prepared.

[0006]

[Operation] A memory card in which predetermined marking contents are stored in advance is inserted into the input side of the CPU, and the marking contents are input to the CPU side by a predetermined operation using the operating device. The operation details and input at this time are displayed on the monitor.

[0007]

[Embodiment] An embodiment of the present invention will be explained based on the drawings. FIG. 2 schematically shows an example of a laser marking device, in which 1 is a YAG laser oscillator, and the laser optical path of this YAG laser oscillator 1 includes a relay lens 2, a Y-axis scanner mirror 3, a polygon scanner 4, a field lens 5, A dispersed liquid crystal 6, an X-axis scanner mirror 7, and an objective lens 8 are interposed, and the laser beam from the YAG laser oscillator 1 is sent to the Y-axis scanner mirror 3 in the Y-axis direction, and the polygon scanner 4 to the X-axis direction. After being scanned, the light is irradiated onto the dispersed liquid crystal 6 via the field lens 5. A marking character pattern appears on this dispersion type liquid crystal 6, and the laser beam passing through this dispersion type liquid crystal 6 becomes a pattern image of the marking character, and this pattern image is transmitted to the X-axis scanner mirror 7 on the object side and the objective lens 8. The workpiece 9 can be scanned and marked in the Y-axis and X-axis directions. FIG. 3 shows the drive system of the laser marking device 1, which includes the Y-axis scanner mirror 3, the polygon scanner 4, and the Y-axis scanner mirror 3 on the objective side.
The axis scanner mirror 7 and the objective lens 8 are driven by a four-axis motor controller 10, and the distributed liquid crystal 6 is controlled by a distributed liquid crystal controller 11. Both controllers 10 and 11 are each controlled by a CPU 12 in a predetermined manner. Command values for the controllers 10 and 11 are stored in advance in the CPU 12, and commands in accordance with the contents of the memory are output to the controllers 10 and 11. And the above C
The memory contents of the PU12 are read as necessary and at the time of setup changes such as changing marking characters.
Changed by writing. FIG. 1 shows an input system for reading, writing, and writing memory contents to the CPU 12. In the figure, 13a and 13b are first and second memory cards using SRAM, and both memory cards 13a,
13b is connected by a bus line 14, so that the contents of the first memory card 13a can be copied to the second memory card 13b. The memory contents of the first memory card 13a are transferred to the CPU via the bus line 15.
12 is input. Both of the memory cards 13a and 13b are inserted into a device on the CPU 12 side so that they can be freely input and output. Further, the CPU 12 and each memory card 13a, 13b can selectively access each other via chip select lines 16a, 16b. 17 is the above CPU 12 and memory card 1
3a and 13b, and by operating the keyboard of this device, the memory card 13 can be accessed.
The memory contents of a and 13b are stored in the CPU 12, and the memory contents can be changed. The contents of this memory and the instruction results such as changes are stored in the controller 1.
8 and displayed on the monitor 19. Note that the operating device 17
A monitor 20 is also provided for displaying the contents of the interaction with the CPU 12.

In the above configuration, when changing the marking contents such as printing or engraving of the laser marking device, so-called changeover, the memory cards 13a and 13b, which have predetermined marking contents stored in advance, are transferred to the CPU.
12, and input to the CPU 12 side by a predetermined operation using the operating device 17. The operation contents and input contents at this time are displayed on the monitors 19 and 20. At this time,
Reading and writing to and from the memory cards 13a and 13b is carried out at an extremely high speed, 10 to 30 times faster than that of a floppy disk, so that the above setup change operation can be carried out in a short time. In the above operation, the memory contents of the memory cards 13a and 13b are also changed using the operating device 17. At this time, the contents stored in the first memory card 13a are copied to the second memory card 13b via the chip select line 16a and 16b. Either the first or second memory card may be used during the setup change operation. After the memory in the CPU 12 is changed due to the setup change described above, this CPU
Motor controller 10 according to the memory contents in U12
Each scanning unit and the distributed liquid crystal 6 are controlled via the distributed liquid crystal controller 11 and a predetermined marking character is marked on the workpiece 9. In addition, Figure 1
In this case, a personal computer may be connected instead of the operating device 17 or in parallel with it. In addition to SRAM, the memory card also has EPROM, O
TPROM, EEPROM, MASKROM, E2R
OM etc. are used.

[0009]

According to the present invention, the laser marking device can read the marking contents from the memory or write the marking contents to the memory at an extremely high speed of 10 to 30 times that of a conventional personal computer. Therefore, the setup change when changing the marking contents can be performed in a short time, and the setup change time can be shortened as the marking speed increases. In addition, the memory card for input can copy multiple markings of the same content to another memory card at the same time.
Security can be ensured against inadvertent erasure of the memory contents of the memory card. Furthermore, since memory cards are small, they have the advantage of being easy for workers to carry.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a schematic configuration explanatory diagram of a laser marker device.

FIG. 3 is a block diagram showing a drive system of the laser marker device.

[Explanation of symbols]

1 YAG laser oscillator, 3 Y-axis scanner mirror, 4 polygon scanner, 5 field lens, 6
Dispersed liquid crystal, 7 X-axis scanner mirror, 8 objective lens, 9 workpiece, 10 motor controller,
11 Distributed liquid crystal controller, 12 CPU, 1
3a, 13b memory card, 17 operating device, 1
9, 20 monitors.

Claims (2)

[Claims] 1. Laser light from a YAG laser oscillator 1 is scanned in the X and Y directions by a scanning device and irradiated onto the workpiece 7 via the dispersed liquid crystal, thereby forming a marking pattern that appears on the dispersed liquid crystal 6. In the laser marking device, the memory cards 13a and 13b can be accessed via a bus line to the CPU 12 that controls the scanning device and the controller of the distributed liquid crystal 6, so as to mark a character on the workpiece 9 according to the character. Laser marking equipment. [Claim 2] Memory card 13a, 1 of CPU 12
2. The laser marking device according to claim 1, further comprising a plurality of connectors for connecting the laser marking device 3b.