JPS59219131A - Method of registering printed circuit substrate - Google Patents

Abstract

PURPOSE:To make the registering of a guide hole to a guide pin easier by providing a third guide pin which is inscribed with a guide hole and the sectional configuration of which is considerably smaller than the area of said guide hole. CONSTITUTION:A first guide hole 121, and second and third guide holes 122, 123 which play supplementary part, are previously opened in three corners of a printed circuit substrate 11, and these holes are fitted to a first to third guide pins 131, to 133, allowing a play to be provided in the X and Y directions. The guide pin 131 is inscribed with the guide hole 121 at four points, its sectional configuration is square, and its sectional area is far smaller than that of the guide hole 121. The guide pins 132, 133 are inscribed with the guide holes 122, 123 each at only two points A, B and C, D respectively, with their sectional areas being considerably smaller than those of the guide holes 122, 123. Furthermore, each of the lines connecting the points A, B and the points C, D is in parallel with the lateral and longitudinal sides of the printed circuit substrate 11 respectively, and meets at right angles with each other.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a file alignment method for printed wiring boards II.
Regarding I.

[Technical background of the invention]

Conventionally, when attaching a printed wiring board to a Vc drilling machine, forming a mother turn, or processing an outer mold, the position of the printed circuit board is divided by the following: ↑ 6: Alignment t, number 1
Proceed as shown in the figure. That is, the guide holes 2 are fully opened in the three corners of the printed wiring board 1, and the guide holes 2 are cylindrical in shape.
The guide hole 2 of the board is inserted into the guide bin 3 whose area is approximately equal to the area of the board. This is done by inserting. By the way, in the conventional alignment method for printed wiring boards, the dimensional accuracy of the Q, force, and id pins 3 itself is possible up to 0.01 mm or less, but the guide hole accuracy is ±0 due to variations in plating thickness. .05 scale, deviation of guide hole position by NC drilling machine ±0.05 ynm, expansion and contraction of printed wiring board due to heating and moisture absorption -0.10 to +005 yn.

[Problems with background technology]

However, depending on the alignment method described above, the guide bins 3 and 3 inserted into the guide holes 2 of the board, respectively, cannot be used.
Because the cross-sectional area of ... is almost bluer than the area of guide hole 2, guide hole 3 is affected by the dimensional accuracy of the guide hole mentioned above.
It is difficult to insert into... Also, guide bin 3...
・Since all of them are cylindrical, the guide bin 3...
The direction of the relative displacement 1N between the guide holes 2 and the guide holes 2 is not constant, making it difficult to insert the guide holes 2 into the guide bins 3 .

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for positioning a printed wiring board that facilitates insertion of a guide hole of the printed wiring board into a guide bin.

[Summary of the invention]

In the present invention, when aligning the guide bin with the guide hole of the printed wiring board, the guide bin inserted into the first guide hole is inscribed in the guide hole at least three places, and the second guide bin is inserted into the guide hole at least three places. The guide bins to be inserted into the third guide holes are inscribed in the second and third guide holes at two points, and the contact points of the guide bins in the second guide holes are The alignment between the guide bin and the guide hole can be easily achieved by aligning the contact points of the guide bin at the guide hole with the connecting straight lines parallel to and perpendicular to the vertical or horizontal sides of the printed wiring board. be.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIG.

That is, a first guide hole 121 is pre-drilled in some of the three corners of the printed wiring board 1, and a second guide hole 121 plays a supporting role. The third guide hole 122, 723 is connected to the first guide hole 121, and the first guide hole 121 is connected to the first guide bin 13! It becomes a target for the second. Third guide hole 122 +
12m is the second. 3rd guide bin" 211 J3 with play in the X direction and the y direction, respectively, and
The third guide holes 121 to 123 are inserted into the first to third guide bins 131 to 133. Here, the first guide bin 131 is the first guide hole 12! is inscribed at the 4S point, its cross-sectional shape is square, and its cross-sectional area is the first guide hole 1
Much smaller than that of 21. Further, the second and third guide bins 132r133 are connected to the second and third guide bins 132r133. Third guide hole 122
．． 123 at only two points, A, B, 0, and D, which are parallel to the horizontal and vertical sides of the printed wiring board 1 and orthogonal to each other.

According to the present invention, when aligning, the first to
Third guide hole 12. The first to third guide bins 13. which are inscribed in the guide holes 12 and 123 and have a cross-sectional shape considerably smaller than the area of the guide holes 12 and 123. ~133 is used, so the guide hole 12. 123 and the guides e7131 to 133 are easily aligned.

Also, the second. εIS3 is the idle hole 122 and r123 is the second hole. With respect to the third guide bins 132 and 133, there is no play in the X direction and the y direction, respectively. Even if a relative positional shift occurs between the two, the direction is always constant, so alignment is easy.

In the above embodiment, the case where the cross-sectional shape of the guide hole of the first guide hole is a pressure 1j shape is described, but the shape is not limited to this, for example, an equilateral triangle inscribed in the first guide hole, a regular polygon with equal or more angles, or It may be circular.

i/ζ, In the above embodiment, the case where there are two guide holes having an auxiliary function has been described, but the guide hole is not limited to this, and there may be three or more.

〔Effect of the invention〕

As described above in detail, the present invention provides a method for aligning a printed wiring board, which allows easy alignment of guide bins and guide holes, and has good workability.

[Brief explanation of drawings]

FIG. 1 is a plan view for explaining a conventional method for aligning a printed wiring board, and FIG. 2 is a plan view for explaining a method for aligning a printed wiring board according to an embodiment of the present invention. 1. Printed wiring board, 12. ~123...Guide hole, 131~133...Guide bin.

Claims (1)

[Claims] A central first guide hole and at least two auxiliary second guide holes are formed in the printed wiring board. In the printed wiring board positioning method in which the third guide hole is inserted into the same number of guide bins as the number of boards at the same time and the entire alignment is performed, eight force-strength bins inserted into the first guide hole are inserted into the guide hole. Inscribed in at least three places, and the second. The guide bottles inserted into the third guide holes are inscribed in the second and third guide holes by 2 m 15 r, respectively, and the straight line connecting the contact points of the guide and the bottle in the second guide holes and the third A method for aligning a printed wiring board, characterized in that a straight line connecting the contact points of the id pin is orthogonal to the guide hole in parallel to the vertical or horizontal sides of the printed wiring board.