JPS6227760B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for accurately positioning an electronic component such as an LSI to a predetermined position on a printed board used in an electronic device when the electronic component is mounted on the printed board.

In recent years, electronic components such as LSIs mounted on printed circuit boards used in electronic devices such as computers have become more and more popular.
Due to the increase in the density of these components, flat pack types have come to be used, and printed boards themselves have also come to be mounted at a very high density.

In such high-density mounting work of electronic components, accurately positioning the electronic components to be mounted at predetermined positions on the printed board is an essential condition to avoid soldering defects.
In particular, the conventional method for positioning electronic component leads on pads on a printed board is only by adjustment in the X and Y directions, which are orthogonal axes parallel to the plane of the printed board; Therefore, highly accurate positioning was impossible.

An object of the present invention is to adjust the rotating direction of the mounted electronic components in the θ direction, that is, in a plane parallel to the plane of the printed board, in addition to the adjustment in the X and Y directions, when mounting electronic components on a printed board. The objective is to provide highly accurate positioning.

This invention provides an angle adjustment block that slides on an arc centered around the center of the electronic component suction part of the suction head that suctions the electronic component and positions it at the mounting position on the printed circuit board, and the electronic component is moved in the θ direction. It is also characterized by highly accurate positioning.

As a specific device, the present invention includes a suction head for suctioning and holding an electronic component, an angle adjustment block supported movably on an arc around the center of the electronic component suction part, and a suction head. A means for attaching and fixing the intake head to the block by interposing it with the angle adjustment block (for example, the intake head holder and the intake head block mentioned in the following embodiments).
The electronic component positioning device is characterized by having a plurality of bearing-shaped guides for guiding the angle adjustment block to slide on the above-mentioned circular arc, and means for pressing and driving one end of the angle adjustment block.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a positioning device used in the method of positioning electronic components on a printed board according to the present invention;
2 is a side view of the positioning device of FIG. 1; FIG.

In the figure, 8 is a holder that moves on the printed board in the X and Y directions, transports the electronic component to a predetermined position on the printed board, and positions it in the X and Y directions. A suction head block 1 is attached for holding the head. The suction head block 1 is attached to the suction head holder 2, and the suction head block 1 of the suction head holder 2
On the opposite side is a cylindrical section-shaped angle adjustment block 3.
is installed. This angle adjustment block 3 is movably supported by a holder 8 via a bearing-like guide 4, and is centered at the center 1' of the electronic component suction part of the suction head block 1 with respect to the holder 8 as shown in FIG. It can slide on an arc as shown by arrow A.

In order to make the angle adjustment block 3 slide on the circular arc, that is, to adjust the rotational direction θ in a plane parallel to the plane of the printed board of the electronic component, a return spring 5 and an adjustment guide pin 6 are used.
are provided between each end of the angle adjustment block 3 and the holder 8. The adjustment guide pin 6 is moved in the direction of arrow B by rotating the guide pin head 6', and the angle adjustment block 3 is moved.
to rotate the suction head block 1 by sliding it in the direction of arrow A. As a result, the suction passage 9 of the suction head block 1 is rotated by the suction force applied from the suction source (not shown), and the electronic component 7 is rotated to a predetermined position on the printed circuit board 10. The rotation direction θ is adjusted.

As described above, according to the present invention, the holder 8
By positioning the printed board 1 in the X and Y directions,
Since it is possible to position the electronic component 7 at a predetermined position on the electronic component 7 and to adjust the rotation direction θ of the electronic component 7 in a plane parallel to the plane of the printed board 10, extremely high precision positioning is possible. .

According to the present invention, after the positioning in the XY and θ directions is performed, the electronic component 7 is mounted at a predetermined mounting position on the printed circuit board 10 by moving the holder 8 in the direction of arrow C.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts of an electronic component positioning device used in the present invention, and FIG. 2 is a side view of FIG. 1. 1...Suction head block, 2...Suction head holder, 3...Angle adjustment block, 4...Bearing-shaped guide, 5...Return spring, 6...Adjustment guide pin, 7...Electronic parts , 8... holder, 9... suction passage, 10... printed board.

Claims (1)

[Claims] 1. A holder that is positioned by moving in the X and Y directions on a printed board, a suction head that suctions and holds electronic components, and a holder that slides on the holder along an arc centered on the center of the electronic component suction section. a cylindrical section-shaped angle adjustment block; means interposed between the intake head and the angle adjustment block for attaching and fixing the intake head to the block; and a shaft fixed on the holder; Positioning of electronic components on a printed board, characterized in that the angle adjustment block has a plurality of bearing-shaped guides that guide the angle adjustment block to slide on the arc, and means for pressing and driving one end of the angle adjustment block. Device.