A control method and device for a laser marking machine
A technology for laser marking machines and control methods, applied in printing devices, printing, etc., can solve problems such as difficulty in changing laser output power in real time, lack of precise control, and limitations on laser precision control
Active Publication Date: 2016-05-25
MAXPHOTONICS CORP
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Problems solved by technology
For example, the output timing of the laser and the movement of the galvanometer have only a rough synchronization time, and there is no precise control
In addition, the existing marking machines are all controlling the laser through the external interface of the laser, but the laser itself has a time requirement for this power control, and the external power control time is required to be greater than about 200us, so it is difficult to change the output power of the laser in real time. The marking machine adopts fixed power control, it is difficult to change the power frequently in a processing process, so it limits the precision control of the laser to a large extent
Method used
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[0060] In order to make the above objects, features and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0061] One of the core concepts of the embodiment of the present application is that, by using the SOC to uniformly control the vibrating mirror and the laser, the moving track of the vibrating mirror is determined by the coordinates of the marking point, and the output power of the laser is determined by the gray value of each marking point. The SOC controls the output timing of the laser to match the movement of the galvanometer.
[0062] refer to figure 1 , showing a flow chart of the steps of an embodiment of a laser marking machine control method of the present application, wherein the laser marking machine includes: a system-on-chip SOC, a laser and a vibrating mirror respectively connected to the ...
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The embodiment of the invention provides a laser marking machine control method. A laser marking machine comprises a system-on-chip SOC, a galvanometer and a laser device which are respectively connected with the SOC. The laser marking machine control method comprises the steps that: the SOC receives marking point coordinates and a gray value corresponding to a marking point; the SOC converts the marking point coordinates and the gray value corresponding to the marking point into a marking instruction; and the SOC adopts the marking instruction to control motion of the galvanometer and control output timing sequence and output power of the laser device. According to the laser marking machine control method and the laser marking machine control device, the SOC is adopted to control the galvanometer and the laser device, the so that the motion of the galvanometer is accurately matched with the output timing sequence of the laser device; and the SOC generates marking point coordinates and power value corresponding to the marking point for each marking point, when the galvanometer moves to the marking point coordinates, the laser device outputs laser with a power value corresponding to that of the marking point, thereby realizing the point-to-point power control on output of the laser device.
Description
technical field [0001] The present application relates to the technical field of laser marking, in particular to a laser marking machine control method and a laser marking machine control device. Background technique [0002] In the control of laser marking machines, the current control methods have relatively large errors. For example, the output timing of the laser and the movement of the galvanometer have only a rough synchronization time, and there is no precise control. In addition, the existing marking machines are all controlling the laser through the external interface of the laser, but the laser itself has a time requirement for this power control, and the external power control time is required to be greater than about 200us, so it is difficult to change the output power of the laser in real time. The marking machine adopts fixed power control, and it is difficult to change the power frequently during a processing process. Therefore, the precise control of the las...
Claims
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IPC IPC(8): B41J29/393B41J2/435
Inventor 宋君何高峰蒋峰
Owner MAXPHOTONICS CORP