JP2986988B2 - How to drill guide marks on multilayer laminates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for drilling a guide mark in a multilayer laminate used for detecting a guide mark of an inner layer circuit of the multilayer laminate by X-rays and accurately drilling the guide mark. It is.

[0002]

2. Description of the Related Art Generally, a guide mark of a multilayer laminated board is provided inside and is detected using X-rays. When searching for a guide mark whose position is not known using X-rays, it is necessary to first detect the guide mark to be searched from a wide field of view. However, an X-ray image is affected by the area and arrangement of black and white in the field of view (the image is pulled and distorted). Therefore, the position of the guide mark may be deviated from the actual position due to the pattern around the guide mark, the thickness of the copper foil of the outer layer or the inner layer, or the like.

Conventionally, when a multilayer laminate having an appropriate size is positioned and sent to form a hole in a guide mark of the multilayer laminate, as shown in FIG. The guide mark 2 of the multilayer laminate 1 is visually searched for, a magic mark a is attached to the position of the guide mark 2 with magic ink, and the magic mark a is supplied to the rough positioning step b. And the above-mentioned magic mark a are positioned by the operator, and then the roughly positioned multilayer laminate 1 is sent to an X-ray positioning step e.
Guide mark 2 of multilayer laminate 1 by X-ray positioning device 3
X-ray positioning device 3 using a table (hereinafter referred to as an XY, θ table) that can freely adjust the position in two directions (X direction and Y direction) and around a vertical axis (θ) on a plane.
The position of the multilayer laminate 1 is adjusted based on the data of (1), the guide mark 2 and the center of the X-ray positioning device 3 are aligned, and X
The multilayer laminated board 1 positioned in the line positioning step e is sent to a drilling step 4 in which holes 8 are drilled. 5 in FIG.
Is a conveying device for conveying the multilayer laminate 1 at a constant pitch, and P is a pitch for sending the multilayer laminate 1.

[0004]

However, in the above-mentioned conventional example, it is necessary to visually check the guide mark 2 by hand and visually attach the magic mark a to the multilayer laminate 1, so that the work is performed manually. There is a problem that it costs. Further, as shown in FIG. 5, since the guide mark 2 is provided on the inner insulating layer 7 between the outer copper foils 6 as shown in FIG. 5, there is a problem that skill is required to find the guide mark 2.
In some cases, the position cannot be found visually. Therefore, conventionally, there is a problem that the processing of detecting the position of the guide mark 2 and drilling the hole 8 cannot be automated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to accurately position a multi-layer laminate and to drill a hole without requiring any manpower, thereby achieving automation. It is an object of the present invention to provide a method for drilling guide marks of a multilayer laminate that can be achieved.

[0006]

According to the present invention, there is provided a method for punching a guide mark of a multilayer laminate, wherein the guide mark of the multilayer laminate is detected by an X-ray position detecting device having a wide field of view. Based on the data detected by the X-ray position detecting device, the multilayer laminate is placed in two plane directions (X direction and Y direction).
And positioning about the vertical axis (θ) (hereinafter referred to as XY, θ positioning), and then detecting the positioned guide mark of the multilayered laminate with an X-ray position detecting device having a narrow visual field. A hole is formed in the guide mark based on the data detected by the line position detecting device.

[0007]

According to the above arrangement, first, the guide mark of the multilayer laminate is detected by the X-ray position detecting device having a wide field of view, and the position of the multilayer laminate is corrected in accordance with the guide mark.
Since the guide mark can be accurately detected by the line position detecting device, the position of the guide mark can be accurately detected, and a hole can be accurately formed in the guide mark. Further, since the position can be detected and positioned by the X-ray position detection device, the position can be automatically detected and positioned, and automation can be achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the embodiment shown in FIG. 1 will be described. An end face positioning step 10 is provided in front of the work loading section 9,
An X-ray coarse positioning step 1 is located in front of the end face positioning step 10.
1 in front of the X-ray coarse positioning step 11.
A line guide mark measuring step 12 is provided, and a drilling step 4 is provided in front of the X-ray guide mark measuring step 12. From the end face positioning step 10 to the rough X-ray positioning step 11, the X-ray guide mark measuring step 12, and the drilling step 4, the same transporting device 5 is used as in the above-described conventional example, and the feed is performed at a constant feed pitch P. It has become. In the end face positioning step 10, pressing members 14 for pressing the multilayer laminated board 1 on four sides are arranged on four sides. X-ray coarse positioning process 11
Has an X-ray position detecting device 3 for detecting a position in a wide field of view and an XY-θ table.
The X-ray position detecting device 3 applies X-rays from the X-ray irradiation source to the multilayer laminate 1.
The camera is connected to a monitor television via an image processing device by irradiating a line and taking an image through an X-ray imaging tube and a camera and displaying the image on a monitor television. The X-ray guide mark measuring step 12 includes an X-ray position detecting device 3 having a narrow visual field.
Is arranged. The drilling step 4 is provided with a drill or the like. Then, the multilayer laminate 1 is sent from the work loading section 9 to the end face positioning step 10, where the multilayer laminate 1 is positioned on the basis of the end face. Next, the multilayer laminated board 1 positioned on the basis of the end face is sent to an X-ray coarse positioning step 11, and the guide mark 2 is detected by the X-ray position detecting device 3 having a wide field of view. X, Y, θ
The positioning is performed, and the guide mark 2 and the center of the X-ray position detecting device 3 are aligned. Next, the roughly positioned multilayer laminate 1 is sent to an X-ray guide mark measuring step 12, where the guide mark 2 is detected by an X-ray position detector 3 having a narrow visual field.
Is detected. This multi-layer laminate 1 is subjected to a punching process 4
The drill is moved to the guide mark 2 by moving the drill based on the data of the narrow-field X-ray position detecting device 3, and a hole 8 is formed in the guide mark 2.
At this time, in the X-ray guide mark measuring step 12, the multilayer laminate 1 is positioned by the XY-θ table based on the data of the X-ray position detecting device 3, and in the drilling step 4, a fixed drill is used. May be performed.

Next, an embodiment shown in FIG. 2 will be described. This embodiment is basically the same as the embodiment of FIG.
In the case of the present embodiment, there is a case where the direction confirmation mark 15 is provided on the multilayer laminate 1 in addition to the guide mark 2. In the rough X-ray positioning step 11, an X-ray position detecting device 3a for detecting a direction confirmation mark is provided. Then, in the rough positioning step 11, the front and back of the multilayer laminate 1, the 180 ° inversion, and the like are checked.

In the above embodiment, the X-ray coarse positioning step 1
Although the X-ray position detecting device 3 is used for detecting the position by imaging in a wide field of view, the X-ray position detecting device 3 is ± 20 mm as shown in FIG.
It may be made possible to move about. As a result, the guide mark 2 can be searched in a wide field of view even with the X-ray position detection device 3 that can capture only a narrow field of view. In addition, the X-ray coarse positioning step and the X-ray position measuring step may be combined, and the X-ray position detecting device 3 may be a zoom type. In this case, first, the guide mark 2 is detected in a wide field of view, XY, θ positioning is performed using an XY, θ table, and then the guide mark 2 is detected with high precision in a narrow field of view. However, in this case, cycle loss may occur.

[0011]

As described above, according to the present invention, the X of a wide field of view
The line position detection device detects the guide mark of the multilayer laminate, corrects the position of the multilayer laminate accordingly, and then can accurately detect the guide mark with the narrow-field X-ray position detection device. The position of the guide mark can be accurately detected and the hole can be accurately drilled in the guide mark. In addition, the position can be detected and positioned by the X-ray position detection device. This allows the machining line to be automated.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a schematic plan view of a processing line, and FIG.

2A and 2B show another embodiment of the present invention, in which FIG. 2A is a schematic plan view of a processing line, and FIG.

FIG. 3 is an explanatory diagram of another embodiment of the above.

4A and 4B show a conventional example, wherein FIG. 4A is a schematic plan view and FIG. 4B is a schematic front view of a main part.

FIG. 5 is a sectional view showing a position of a guide mark of the multilayer laminate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multilayer laminated board 2 Guide mark 3 X-ray position detection device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 3/46 B23Q 17/24 H05K 3/00

Claims (1)

(57) [Claims] 1. A guide mark of a multilayer laminated board is detected by an X-ray position detecting device having a wide field of view, and based on data detected by the X-ray position detecting device, the multilayer laminated plate is positioned in two plane directions (X direction and X direction). (Y direction) and around the vertical axis (θ) (hereinafter referred to as XY, θ positioning), and then the guide mark of the positioned multilayer laminate is detected by an X-ray position detecting device having a narrow visual field, A method for drilling guide marks in a multilayer laminate, comprising: drilling holes in guide marks based on data detected by an X-ray position detector for a visual field.