TWI803593B - Continuous marking laser marking system - Google Patents

Abstract

A computer graphics line dividing device divides a marking pattern to be marked in an orderly manner, and calculates the maximum stroke that can be moved according to the dividing line. According to this method, move along the X-axis direction, and find out the maximum stroke that each selected point can move for the selected points of the entire selected line, so these maximum strokes form a zone Z above and below the line. In this zone Z, a moving line passing through this zone Z is obtained, and this moving line is the trajectory of the movement of the slide table relative to the marking galvanometer. Then along each point on the moving line, calculate the distance between the point and the selected line along the Y axis, that is, the marking offset distance, which is the marking vibrating mirror of the laser marking machine at each point of the selected line The points that must be moved for marking. Using this method, laser marking can be performed. The advantage is that because the moving track of the sliding table relative to the marking galvanometer is a relatively gentle curve or even a straight line, it can maintain a relatively fixed moving speed, so the marking line is quite flat. In addition, one line is marked continuously in one operation, so the line has no traces of discontinuity at the connection point, but shows the appearance of a smooth and close to the planned line segment. This case is also suitable for dividing the original drawing into several different areas, and performing the above-mentioned marking operation on each area, and when entering another area from one area, the movement of the slide table relative to the laser marking machine It doesn't stop, and maintains a smooth path.

Description

Continuous marking laser marking system

The present invention is related to laser marking, which mainly uses laser marking of line-segment graphics, especially a laser marking system for continuous marking of sub-lines.

Laser marking machine is to use the laser beam to be highly focused after being processed by the lens, and then apply the laser beam to the laser processing object to achieve the purpose of marking, material removal, cutting or engraving. Generally, the marking object is placed on a slide table. Then use the motor system to control the movement and rotation of the sliding table, and move the sliding table to a position suitable for marking to perform marking operations.

Due to the limited marking range of the laser marking machine, when dealing with large marking objects or large marking graphics, the laser marking machine must first divide the marking graphics to be marked into multiple parts, and then adjust the laser The marking machine aligns and marks the different corresponding positions of the processed object, and stitches out a complete graphic. The processing methods in the prior art all manually divide and sort the marking graphics, and then manually control the sliding table to perform the alignment of the markings, so it is difficult to avoid the situation of incomplete seams. Therefore, for too complex large-scale marking graphics, the work of manual adjustment is very time-consuming and laborious, and it is even too complicated to be carried out by manpower.

In the improved technology, the linear graphics can be divided and marked again, and there will be no broken lines in the above graphics. However, if the graphics are not smooth curves but sharp corners, the slide table at this time When moving relative to the marking machine, it is necessary to perform acceleration and deceleration operations. But this operation will affect the whole operation procedure.

Therefore, this case hopes to propose a brand-new automatic laser marking graphics sub-line marking system to solve address the shortcomings of previous technologies. In addition to automatically dividing the marking graphics, when marking, it can be improved by taking into account the special conditions of the adjacent bending parts, and then the marking graphics can achieve high-quality effects to avoid marking Graphics produce tearing gaps, distortions, or dashed lines that are visually abnormal.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the conventional technology. In the present invention, a laser marking system for continuous marking of divided lines is proposed. The gentle curve is even a straight line, so it can maintain a relatively fixed moving speed, so the marked line is quite flat. In addition, one line is marked continuously in one operation, so the line has no traces of discontinuity at the connection point, and shows the appearance of a smooth and close to the planned line segment.

In order to achieve the above purpose, this case proposes a laser marking system for continuous marking on separate lines, including: a laser marking machine, which can emit laser beams for marking, and the laser marking machine emits The laser light beam can be projected onto a marking object for marking, and the marking image is displayed on the marking object, where the marking galvanometer moves to the required marking point in the X and Y axis directions, and the laser light is projected out and To achieve the purpose of marking; a slide table, on which the marking object is placed, the laser marking machine can irradiate the laser beam on the marking object, and form a pattern marked by the laser beam on the marking object Graphics; where the sliding table moves to the required marking point in the X and Y axis directions to receive the laser beam projected by the laser marking machine to achieve the purpose of marking; a motor system is mainly used to control the marking The movement of the sliding table in the direction of X and Y axes, so the sliding table can be moved to a position suitable for marking; a computer device can determine the entire marking space and storage machine according to the position and marking direction of the laser marking machine The spatial coordinates of the station; a laser marking controller for controlling the laser marking machine, the The motor system and the slide table are used to perform the required marking operation on the marking object; a graphic marking planner is used to perform marking by the laser marking machine on each line in a marking graphic composed of lines Path planning, the method is that for each line in the marking graph, firstly the sliding table moves relative to the laser marking machine in a smooth path, and then adjusts the laser marking for each point in the smooth path. The marking galvanometer of the marking machine moves to the required marking point in the direction of X and Y axis for marking. A computer graphic line dividing device, which is connected with the computer device and the laser marking controller, can divide a marking graphic into several lines.

The features and advantages of the present invention can be further understood from the following description, please refer to the accompanying drawings when reading.

10:Laser marking machine

12: Marking galvanometer

80: line

81:Selected point

20: slide table

30:Motor system

40: Marking graphics

50:Computer device

60:Laser marking controller

70: Computer graphics line distribution device

75: Graphic marking planner

83: Maximum stroke

84: Mobile line

85: line

90: L-shaped line

100: Marking objects

110: area

Figure 1 shows the block diagram of the system components of this case.

Figure 2 shows an example of the marking pattern in this case.

FIG. 3A shows line 1 of the line diagram of the marking pattern in FIG. 2 .

FIG. 3B shows line 2 of the line diagram of the marking pattern in FIG. 2 .

FIG. 4A shows a line segment 1 of another line dividing method of the marking pattern in FIG. 2 .

FIG. 4B shows line segment 2 of another line dividing method of the marking pattern in FIG. 2 .

Figure 5 shows that a zone Z is formed above and below the selected line after the marking pattern is divided into lines in this case.

Fig. 6 shows another embodiment of the present invention, wherein compensation is made at the knuckle for the L-shaped line.

Another embodiment of the present case is shown in Fig. 7, which divides the original image into different regions for marking operations.

Hereby, I would like to discuss the structure of this case, as well as the functions and advantages that can be produced, and cooperate with the diagram, this case As long as it is a graph composed of lines, one of the preferred embodiments of this case will be described in detail as follows.

Please refer to Figures 1 to 6, which show the graphic line marking planning system of the present invention, which is mainly used in the laser marking machine system and includes the following components: A laser marking machine 10 can emit laser beams for marking. The laser beam emitted by the laser marking machine 10 can be projected onto a marking object 100 for marking, and a marking pattern appears on the marking object 100 . The marking galvanometer 12 moves to the desired marking point in the X and Y axis directions, and then projects the laser light to achieve the purpose of marking.

A slide table 20 on which the marking object 100 is placed. The laser marking machine 10 can irradiate the laser beam onto the marking object 100 to form a pattern marked by the laser beam on the marking object 100 . Generally, the graphics are quite beautiful and have rich textures, which cannot be achieved by printing or printing with general printers. Wherein the sliding table 20 is moved to the desired marking point in the directions of X and Y axes, so as to receive the laser beam projected by the laser marking machine 10 to achieve the purpose of marking.

Therefore, in order to project the laser beam to the required marking point during marking, the slide table 20 and the marking galvanometer 12 must be moved in the X and Y axis directions. Therefore, the moving track of the slide table 20 relative to the marking galvanometer 12 must be planned first according to the marking pattern.

A motor system 30 is mainly used to control the movement of the slide table 20 in the X and Y axis directions, so that the slide table 20 can be moved to a position suitable for marking.

A computer device 50 can determine the spatial coordinates of the entire marking space and the storage machine according to the position and marking direction of the laser marking machine 10 .

The computer device 50 can mark the two-dimensional graphics of the entire marking space, and receive the marking graphics 40 input by the user. Therefore, according to the geometric position of the marking pattern 40 in the two-dimensional space, the point coordinates of the marking pattern 40 corresponding to the two-dimensional space are calculated. The computer device 50 coordinates the point coordinates in two-dimensional space to Outward teleportation.

A laser marking controller 60 is used to control the laser marking machine 10 , the motor system 30 and the slide table 20 to perform required marking operations on the marking object 100 .

A computer graphic line dividing device 70, which connects the computer device 50 and the laser marking controller 60, can divide a marking graphic 40 into several lines, as shown in Fig. 2, Fig. 3 and Fig. 4, and Fig. 2 shows Figure 3A and Figure 3B show the graphics without lines, and Figure 4A and Figure 4B show another way of line division. Therefore, there may be various ways of dividing lines, which will not affect the implementation of this case.

A graphic marking planner 75, which plans the marking path of the laser marking machine 10 for each line divided by the computer graphics line dividing device 70, so that the entire marking path can achieve the highest efficiency and Can be the closest to the original graphics. The so-called highest efficiency means that the purpose of marking can be achieved in the fastest time or the shortest stroke.

The situation in FIG. 2 is illustrated here, where the graph is divided into two lines 80 , 85 . It is hereby explained that the marking plan in this case is as follows; the X and Y coordinates are set for this figure, and the selected point 81 is planned for the selected line 80, and the upper and lower positions of the marking vibrating mirror 12 on the Y axis are used for each selected point 81 Calculate the maximum stroke 83 that can be moved, and this maximum stroke is when the center point of the marking galvanometer 12 is aligned with a selected point 81 of the selected line, the laser beam that the marking galvanometer 12 can project on the Y axis The maximum range of the beam. According to this method, move along the X-axis direction, find out the maximum stroke that each selected point can move for the selected point 81 of the entire selected line 80, so these maximum strokes form a zone Z above and below the line, as shown in Figure 5 shown in the.

In this zone Z, a moving line 84 passing through this zone Z is obtained, and this moving line is the trajectory of the movement of the slide table 20 relative to the marking galvanometer 12 . Preferably the moving line is a smooth curve, more preferably the moving line is a straight line.

Along each point 81 on the selected line 80, calculate the distance between the point and the selected line along the Y axis, that is, the marking offset distance, which is the marking galvanometer 12 of the laser marking machine on the selected line. Every point 80 of 81 must move the point for marking.

Then, according to the results of the above calculations, the moving track of the slide table 20 relative to the marking vibrating mirror 12 (i.e. the moving line 84), and the information of the position of the vibrating mirror offset marking are sent to the laser marking controller 60, Based on these data, the laser marking controller 60 determines the relative position of the sliding table 20 controlled by the motor system 30 and the marking galvanometer 12 in the laser marking machine 10, and then the laser marking The marking machine 10 marks the corresponding area on the marking object 100 . A preferred method is to first move the laser marking machine 10 along the selected point 81 of the selected line 80, and at each selected point, adjust the marking galvanometer 12 according to the calculated marking offset distance. Marking is carried out by moving on the X and Y axes. When the laser marking machine 10 is processing along the selected line 80, the slide table 20 also moves along the planned moving line 84 at the same time, thereby speeding up the overall process. Marking speed, and maintain good processing quality.

Mark each line 80 , 85 divided by the computer graphics line dividing device 70 according to the steps listed above. That is to say, the marking operation is completed. There may be multiple ways of dividing the lines by the computer graphics line dividing device 70, but these different ways will not affect the final marking result.

Another embodiment of the present case is shown in Fig. 6, wherein the L-shaped line 90, in this case the moving line 84 can be seen as a line with a smooth knuckle where compensation must be made.

Another embodiment of the case is shown in Fig. 7, wherein the original figure is divided into several different regions 110, and the above-mentioned marking operation is carried out for each region 110, and when entering another region 110 from one region 110, The slide table 20 does not stop moving relative to the laser marking track 10, and maintains a smooth path as much as possible, so that the interruption points of the entire marking pattern 40 can be minimized, thereby speeding up the overall marking speed.

The advantage of this case is that a computer graphics line dividing device is used to divide a marking pattern to be marked in an orderly way, and calculate the maximum travel distance that can be moved according to the dividing line. According to this method, move along the X-axis direction, and find out the maximum stroke that each selected point can move for the selected points of the entire selected line, so these maximum strokes form a zone Z above and below the line. In this zone Z, a moving line 84 passing through this zone Z is obtained, and this moving line is the trajectory of the movement of the slide table 20 relative to the marking galvanometer 12 . Then along each point on the selected line, calculate the distance between the point and the selected line along the Y axis, that is, the marking offset distance, which is the distance between the marking vibrating mirror 12 of the laser marking machine on the selected line 80 81 points must be moved for marking every point. Using this method, laser marking can be performed. The advantage is that the moving track of the slide table 20 relative to the marking galvanometer 12 is a relatively gentle curve or even a straight line, so a relatively constant moving speed can be maintained, so the marked line is quite smooth. In addition, one line is marked continuously in one operation, so the line has no traces of discontinuity at the connection point, but shows the appearance of a smooth and close to the planned line segment.

To sum up, the thoughtful design of humanization and automation in this case is quite in line with actual needs. Its specific improvement has existing deficiencies, and compared with the prior art, it has the advantage of breakthrough progress, and indeed has the enhancement of efficacy, and it is not easy to achieve. This case has not been published or disclosed in domestic and foreign literature and market, which is in compliance with the provisions of the patent law.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not used to limit the patent scope of the present invention, and any equivalent implementation or change that does not depart from the technical spirit of the present invention shall be included in In the patent scope of this case.

10:Laser marking machine

12: Marking galvanometer

20: slide table

30:Motor system

40: Marking graphics

50:Computer device

60:Laser marking controller

70: Computer graphics line distribution device

75: Graphic marking planner

100: Marking objects

Claims (6)

A laser marking system for split-line continuous marking, including: a laser marking machine that can emit laser beams for marking, and the laser beams emitted by the laser marking machine can be projected onto a The marking object is marked, and the marking graphic is presented on the marking object, in which the marking galvanometer moves to the required marking point in the direction of the X and Y axes, and then the laser light is projected out to achieve the purpose of marking; A sliding table, on which the marking object is placed, the laser marking machine can irradiate the laser beam on the marking object, and form a pattern marked by the laser beam on the marking object; wherein the sliding table The system moves to the required marking point in the X and Y axis directions to receive the laser beam projected by the laser marking machine to achieve the purpose of marking; a motor system is mainly used to control the sliding table in X and Y Axial movement, so the slide table can be moved to a position suitable for marking; a computer device can determine the entire marking space and the spatial coordinates of the storage machine according to the position and marking direction of the laser marking machine; The laser marking controller is used to control the laser marking machine, the motor system and the slide table to perform the required marking operations on the marking object; a graphic marking planner, for a Each line in the marking pattern composed of lines is used to plan the marking path of the laser marking machine. The method is that for each line in the marking pattern, the sliding table first performs a smooth path relative to the laser marking machine. Move, and then adjust the marking galvanometer of the laser marking machine to move to the required marking points in the X and Y axis directions for each point in the smooth path; a computer graphics branching device, connected The computer device and the laser marking controller can be The marking graphic is divided into several lines; wherein the graphic marking planner sets the X and Y coordinates for each line of the marking graphic, and plans the selected points for the selected lines in each line of the marking graphic, and for each selected point according to the The maximum stroke that the marking galvanometer can move is calculated up and down the Y axis. This maximum stroke is when the center point of the marking galvanometer is aligned with a selected point of the selected line, the marking galvanometer is on the Y axis. The maximum range of the laser beam that can be projected by the above; according to this method, move along the X-axis direction, and find the maximum travel that each selected point can move for the selected points of the entire selected line, so these maximum travels are above and below the line A zone Z is formed; in this zone Z, a moving line passing through this zone Z is obtained, and this moving line is the trajectory of the movement of the slide table relative to the marking galvanometer; and each line along the selected line One point, calculate the distance between the point and the selected line along the Y axis, that is, the marking offset distance, which is the point where the marking galvanometer of the laser marking machine must move for marking at each point of the selected line; Mark each line divided by the computer graphics line dividing device according to the above steps, and the marking operation is completed. Such as the laser marking system for continuous marking of sub-lines in item 1 of the patent scope of the application, wherein the moving line is a smooth curve. Such as the laser marking system for continuous marking of sub-lines in item 1 of the scope of patent application, wherein the moving line is a straight line. For example, the laser marking system for line-dividing and continuous marking in the first item of the patent scope, in which the moving track of the slide table relative to the marking galvanometer is based on the above calculation results, that is, the moving line and the galvanometer offset The message of the marking position is sent to the laser marking controller, and then the laser marking controller According to these data, determine the relative position of the slide table controlled by the motor system and the marking galvanometer in the laser marking machine, and then the laser marking machine will mark the corresponding area on the marking object . For example, the laser marking system for continuous marking of sub-lines in item 4 of the scope of the patent application, wherein the laser marking machine is first moved along the selected points of the selected line, and at each selected point, according to the calculated Marking offset distance adjustment The application of the marking galvanometer moving on the X and Y axes for marking, when the laser marking machine is moving and processing, the sliding table also moves along the planned moving line at the same time . For example, the laser marking system for line-by-line continuous marking in item 4 of the scope of patent application, in which the original drawing is divided into several different areas, and the above-mentioned marking operation is performed on each area, and when entering from one area In another area, the movement of the slide table relative to the laser marking machine does not stop, and maintains a smooth path.

Images