JP2790902B2 - How the drawing device works - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a drawing apparatus for drawing a circuit pattern or the like of an electronic circuit board, and more particularly to a method of operating a drawing apparatus based on drawing NC data.

2. Description of the Related Art When drawing a circuit pattern or the like of an electronic circuit board using a drawing device, drawing data for operating the drawing device must be created based on CAD data and the like. By the way, when the drawing nozzle is operated along the outline of the pattern to be drawn, the pattern may protrude depending on the diameter of the drawing nozzle to be used. Conventionally, drawing data is manually created because there is a specific operating condition that the pattern tends to be thickened if the viscosity is high depending on the type of drawing paste to be used.

Problems to be Solved by the Invention However, the above conventional example has the following problems.

Since the outer shape of the drawing pattern protrudes according to the diameter of the drawing nozzle to be used, it is difficult to obtain a drawing pattern of a predetermined shape.

If the diameter of the drawing nozzle to be used is different, the width of the drawing line changes and the drawing locus must be changed, and local thickening due to the unpainted portion and the degree of overlap easily occurs.
In addition, the thickness of the drawing pattern changes according to the viscosity of the paste to be used and the like, and it is difficult to obtain a drawing pattern having a predetermined thickness.

When a pattern to be drawn is complicated, it is very difficult to create drawing data.

Defects in the created drawing data are difficult to find as they are and cannot be found unless the actual drawing is performed, so that the work tends to be wasted.

To perform drawing work based on one type of drawing data, 1
Only the drawing device of the machine can be used, resulting in poor work efficiency.

If the drawing data of the pattern to be drawn exceeds the memory capacity of the drawing device, the drawing operation becomes difficult.

Means for Solving the Problems The first invention of the present application is directed to drawing locus data in which drawing locus parameters are set in accordance with the diameter of a drawing nozzle, and drawing operation data in which drawing operation parameters are set in accordance with the type of drawing paste. Based on this, the drawing device is operated.

The second invention of the present application is to display a drawing pattern according to the drawing data on a screen and add a necessary correction to the drawing data,
The drawing apparatus is operated based on the corrected drawing data.

According to a third aspect of the present invention, a pattern to be drawn is divided and divided data is allocated to a plurality of drawing apparatuses, and a drawing locus and a drawing corresponding to a drawing nozzle and a drawing paste corresponding to each divided pattern are provided for each drawing apparatus. Determine the behavior,
Each drawing device is operated based on this determination.

According to a fourth aspect of the present invention, the drawing data is divided into a plurality of files that can be drawn with a single stroke by a drawing nozzle, and the drawing device is sequentially operated based on the data of each file. Are discarded, and the drawing device is sequentially activated, starting with the last data of the activated file data.

According to the first aspect of the present invention, predetermined drawing is performed by inputting data of a drawing nozzle to be used for each drawing trajectory parameter such as a width of a drawing line, a degree of overlap between drawing lines, a drawing start position, and a pre-sensing point. A drawing locus corresponding to the diameter of the drawing nozzle can be obtained for the pattern. Further, by inputting the drawing paste data to be used for each drawing operation parameter such as drawing speed, drawing acceleration, paste discharge pressure, discharge timing paste temperature, etc., a drawing pattern having a predetermined film thickness is formed even when the paste used is different. be able to.

According to the second aspect, by displaying the drawing data on the screen, the defect can be easily known and corrected without performing the actual drawing work based on the drawing data, so that the work efficiency can be improved. it can.

According to the third aspect, the drawing data is divided into a plurality of pieces, and the divided data is assigned to a plurality of drawing apparatuses to perform drawing, so that a drawing nozzle or a drawing paste having a diameter corresponding to the shape of the divided pattern can be used properly. Therefore, the working time can be reduced and the quality can be improved.

According to the fourth aspect, even when the drawing data amount exceeds the memory capacity of the drawing device, the drawing device can be operated without difficulty by sequentially inputting the drawing data. Also, when the rotation position of the sensor cannot exceed ± 180 ° in absolute coordinates as in a real-time sensing type drawing apparatus, the drawing nozzle is input by inputting the drawing data for each drawing data in an amount that can be drawn with one stroke. Since pen-up can be performed on a program, by returning the sensor position to the origin at this time, a drawing operation exceeding the above-described limit can be performed.

Embodiment FIGS. 1 to 11 show an embodiment in which the present invention is applied to an operation method of a conductor drawing machine (CW) used for forming a circuit pattern of an electronic circuit board.

In the flowchart shown in FIG. 1, first, in step # 1, CAD data is read. In step # 2, the CAD data format is automatically converted to pattern outline data, and the outline of the drawing pattern is automatically calculated. Usually CAD
The data includes the size of a circular or rectangular unit graphic called an aperture and the movement trajectory of the aperture.
A procedure for automatically calculating the outline of the drawing pattern based on these data is shown in the flowchart of FIG. The flash processing is a form in which a unit figure is left as it is without moving at all. On the other hand, the line processing is to move a unit figure and show the figure by its locus.

A method of creating the outline will be described with reference to FIG. When a circular aperture is moved along an open line shown by a broken line in FIG. 3 (a), as shown in FIG. 3 (b), both ends of the aperture trajectory are linearly formed by half the aperture size. Extend to The arc portion extends tangentially. Subsequently, as shown in FIG. 3 (c), for each side of the aperture trajectory, a figure offset by half the aperture size is created on both sides. The arc is created by concentric circles. Next, find the intersection of the offset figures,
As shown in FIG. 3 (d), the outline up to the intersection is defined as an outline. However, when there are two intersections in the arc portion, the intersection point is closer to the point of the target aperture locus. In the case of a circular arc, the intersection is obtained by extending in the tangential direction. Finally, by connecting the outer contour lines on both sides that are offset at both ends, the outer contour lines can be automatically generated as shown in FIG. 3 (d). In the case of a closed line, the same method as described above can be used except that only the outer contour line is generated.

On the other hand, in step # 3, various condition parameters for automatically creating a trajectory are set for each drawing nozzle diameter and drawing paste to be used, and in step # 4, the parameters are saved / read for each nozzle diameter and paste. This is shown in the flowchart of FIG.

The optimum values of the condition parameters that need to be set when creating the drawing locus differ depending on the nozzle diameter and the paste. Accordingly, by setting the condition parameters for each nozzle diameter and paste, when using the same nozzle diameter and paste as the previous time, the previous settings can be used as they are and there is no need to reset them. For this reason, the setting contents are stored and read out in the auxiliary storage device. Also, by dividing the condition parameters to be set into the condition parameters for creating the drawing trajectory and the condition parameters for determining the drawing operation, when actually creating the trajectory, it is related to the drawing trajectory, NC data for CW In the conversion part, only those relating to the drawing operation can be easily used.

In step # 5, the drawing trajectory of the drawing pattern is collectively and automatically created for each basic pattern. Various shapes can be considered for the drawing pattern, that is, the figure in the drawing target range, but it is difficult to automatically generate all the trajectories. Therefore, a complicated drawing pattern is decomposed into a plurality of basic patterns, and a trajectory is automatically generated for each basic pattern. For example, when drawing a figure as shown in FIG. 5 (a), if this figure is viewed as one concave polygon, the trajectory generation algorithm inside the figure becomes very complicated, and as shown in FIG. 5 (b). In addition, a drawing operation with a large number of trajectories takes time. On the other hand, as shown in FIG.
If this figure is divided into three rectangles, and each is considered as an independent rectangle, it is easy to generate a trajectory, which is a preferable one with a small number of trajectories. In general, for an arbitrary group of figures, an operator divides into an appropriate basic pattern, for example, a circle, a rectangle, a continuous line segment of the same width, a convex polygon, a concave polygon, a solid fill, etc. Automatically creates a locus in a lump based on a predetermined rule.

In step # 6, the locus automatically created is graphically displayed, and necessary corrections are made. The created data usually takes the form of numerical data as shown in FIG. 6, but it is difficult to make corrections in such a form. Therefore, when a series of drawing trajectories are created, the created drawing trajectory (FIG. 7 (a)) and a drawing pattern (FIG. 7 (b)) based on the created drawing trajectory are graphically displayed and corrected interactively.

In step # 7, conditions relating to the drawing nozzle and the drawing paste to be used are input for each of the plurality of drawing machines. In step # 8, drawing locus data is automatically distributed to each drawing machine based on these conditions. In this way, by creating one type of circuit board using a plurality of drawing machines, the number of circuit boards that can be created can be increased. Further, by using a drawing nozzle having a different diameter or a different type of drawing paste for each drawing machine, it is possible to shorten the preparation time and improve the quality. This is shown in the flowchart of FIG.

In step # 9, the drawing trajectory data is automatically converted to the format of NC data for CW. In the case of a real-time sensing type drawing machine, a sensor which rotates in the drawing direction cannot continuously rotate beyond ± 180 ° in absolute coordinates shown in FIG. 9 (a). Therefore, in the case of the locus as shown in FIGS. 9B and 9C, the drawing nozzle is temporarily pen-upd at the position of the point P on the program, and a command to return the sensor position to the origin is inserted in the middle. In the case of a locus as shown in FIG. 9D, it can be drawn with one stroke. This is shown in the flowchart of FIG. Also, of all NC data, there is a limit to the capacity that the drawing machine can read at one time. Therefore, in this case, the NC data is divided into a plurality of files in units of a locus that can be drawn with one stroke. This is shown in the flowchart of FIG.

According to the first aspect of the present invention, a predetermined drawing locus can be obtained regardless of the type of the drawing nozzle. In addition, a predetermined drawing operation can be performed regardless of the type of the drawing paste.

According to the second aspect of the present invention, it is possible to easily perform correction such as unpainting.

According to the third aspect of the present invention, it is possible to reduce the time required for the drawing operation and improve the quality.

According to the fourth aspect of the present invention, NC data can be input without difficulty according to the memory capacity of the drawing apparatus.

[Brief description of the drawings]

FIG. 1 is a flowchart showing the overall procedure of an embodiment of the present invention, FIG. 2 is a flowchart showing a procedure for automatically calculating an outline, FIG. 3 is a view showing a method for creating an outline, and FIG. 5 is a flowchart illustrating a procedure for setting parameters, FIG. 5 is a diagram illustrating division of a drawing pattern into basic patterns, FIG. 6 is a diagram illustrating an example of numerical data of a created locus, and FIG. 7 is a display screen example of created locus data , FIG. 8 is a flowchart showing a procedure for automatically allocating drawing trajectory data, FIG. 9 is a diagram showing a method of dividing trajectory data according to the rotation condition of the sensor, and FIG. 10 is NC data according to the rotation condition. FIG. 11 is a flowchart showing a division procedure, and FIG. 11 is a flowchart showing an NC data division procedure according to the CW internal memory capacity.

Continuation of the front page (56) References JP-A-2-76288 (JP, A) JP-A-2-307290 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H05K 3 / Ten

Claims (4)

(57) [Claims] 1. A drawing device is operated based on drawing trajectory data in which drawing trajectory parameters are set in accordance with the diameter of a drawing nozzle and drawing operation data in which drawing operation parameters are set in accordance with the type of drawing paste. Characteristic method of operating a drawing apparatus. 2. An operation of a drawing apparatus, wherein a drawing pattern corresponding to the drawing data is displayed on a screen, necessary corrections are made to the drawing data, and the drawing apparatus is operated based on the corrected drawing data. Method. 3. A pattern to be drawn is divided and divided data is assigned to a plurality of drawing devices. A drawing locus and a drawing operation corresponding to a drawing nozzle and a drawing paste corresponding to each divided pattern are determined for each drawing device. A method for operating a drawing apparatus, comprising: deciding and operating each drawing apparatus based on the determination. 4. The drawing data is divided into a plurality of files which can be drawn with a single stroke by a drawing nozzle, the drawing device is sequentially operated based on the data of each file, and after a certain operation, the data of the already operated file is discarded. And operating the drawing apparatus sequentially, starting with the last data of the data of the operated file.