JPH10284899A - Method for recognizing electronic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need of work for visually confirming and correcting the feeding direction of an electronic component by turning an electronic component when it is contained in a tray while being oriented incorrectly or the tray is fixed to a fixing tool while being oriented incorrectly thereby correcting the mounting direction of the electronic component on a board. SOLUTION: An electronic component 2 picked up from a tray 3 by means of a mounter 6 is stopped above a recognition unit 7. The recognition unit 7 detects a mark 1 being put on the electronic component 2 and recognizes the orientation thereof. A controller compares a data describing the orientation of the mark 1 at the time of mounting the electronic component 2 on a board with a data corresponding to the current orientation of the electronic component 2 recognized by the recognition unit 7 from the mark 1 on the electronic component 2 held by the mounter 6 and then delivers a control command for turning the electronic component 2 by an angle corresponding to the difference to the mounter 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component recognizing method for accurately mounting an electronic component on a substrate when the electronic component is mounted on the substrate.

[0002]

2. Description of the Related Art Conventionally, when an electronic component is mounted on a board by an electronic component mounting apparatus or the like, usually, a component recognition device or the like is used to accurately mount the mounted electronic component on the board. Component recognition is performed on electronic components mounted on a substrate.

[0003] Hereinafter, a conventional electronic component recognition method will be described.
This will be described with reference to the drawings. In the electronic component mounting apparatus shown in FIG.
For example, there is a tray supply system in which the electronic components 11 are stored and supplied to a large number of concave portions 3a provided in the tray 3. With this tray supply method, the electronic component 11 is added to the electronic component mounting apparatus.
When supplying the tray, an operator attaches the tray 3 in which the electronic components 11 are stored to the fixture 4 in advance, and stores the fixtures 4 in the case 10 in a plurality of layers.

When the electronic component 11 stored in the concave portion 3a of the tray 3 is mounted on the substrate 5,
First, a mounting device (for example, a nozzle that generates a negative pressure inside) that can move in all the position directions represented by the three-dimensional coordinates on the coordinate axes X, Y, and Z is mounted on the uppermost tray of the case 10. 3. Take out the electronic component 11 in 3. Next, the mounting device 6 holding the electronic component 11 moves onto the recognition device 7,
The center of the electronic component 11 is estimated from the appearance shape of the electronic component 11 recognized by the recognition device 7, and the shift amount of the electronic component 11 with respect to the center of the mounting device 6 (for example, the shift amount in each of the X and Y axes, the rotation direction). Offset).

When the electronic component 11 is actually mounted on the substrate 5, the mounting device 6 is moved by the above-described displacement amount in the X and Y axes with respect to the original mounting position, and the position is corrected. 11 is accurately mounted on the substrate 5.

When the electronic component 11 is mounted on the board 5 by rotating the electronic component 11 by a certain angle with respect to the arrangement direction of the board 5,
As shown in FIG. 1, after the mounting device 6 takes out the electronic component 11, the mounting device 6 rotates as indicated by an arrow Y <b> 1 according to a rotation command based on the rotation angle calculated based on the above-described amount of deviation in the rotation direction, and 11 is mounted on the substrate 5 in an accurate direction with respect to the arrangement direction.

[0007]

However, in the above-mentioned conventional electronic component mounting apparatus, as the electronic component recognition method, the mounting of the electronic component 11 is performed based on the external shape of the electronic component 11 recognized by the recognition device 7. X for device 6,
The shift amount in the Y-axis direction, the shift amount in the rotation direction, and the like are measured, and the shift amounts are corrected so that the electronic component 11 is mounted on the board 5.

On the other hand, as shown in FIG.
Even though the electronic component 11 is rotationally symmetric at the center point C1 and has no direction in all of the horizontal, vertical, vertical, and horizontal directions, there is a predetermined orientation to be mounted on each pin P1. When the above electronic component recognition method is used, the electronic component 1
In the following cases, the electronic component 11 is mounted in the wrong direction on the board 5 (referred to as wrong mounting) because the displacement amount with respect to the first mounting device 6 is recognized but the direction cannot be recognized. Had the potential to end up. (1) The operator places the electronic component 11 in the concave portion 3
When stored in a. (2) Normally, the operator attaches the tray 3 to the fixture 4 in the direction shown in FIG. 4A, as in the case of the tray 3b shown in FIG. When it is attached to the fixture 4 in the wrong direction.

In order to prevent such mounting of the electronic components in the wrong direction, the board production factory attaches the tray 3 to the fixture 4 in advance so that the directions of all the electronic components 11 set on the fixture 4 can be changed. When the operator visually confirms and finds a mistake in storing the electronic component 11 in the tray 3 or a mistake in attaching the tray 3 to the fixture 4 as described above, the worker corrects the mistake. I have to.

[0010] The visual confirmation work and the rework work on these electronic components degrade the overall work efficiency for the production of the board and increase the cost of the product due to the labor cost of the worker. Was.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and eliminates the need for visual confirmation and reworking of the supply direction of electronic components when supplying electronic components for mounting a substrate. Provided is a method for recognizing an electronic component, which can improve the overall work efficiency and can suppress an increase in product cost.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an electronic component recognition method according to the present invention, when supplying an electronic component to be mounted on a board, stores the electronic component in a tray in a wrong direction. Even if the tray is attached to the fixture incorrectly, the mounting device is controlled based on the control command for correcting and rotating the electronic components, and the electronic components are rotated to correct the mounting direction on the board. It is characterized by the following.

As described above, when supplying the electronic components for mounting the substrate, it is possible to eliminate the work of visually checking and reworking the supply direction of the electronic components, thereby improving the overall work efficiency in the production of the substrate. Product cost increase can be suppressed.

[0014]

According to a first aspect of the present invention, there is provided a method for recognizing an electronic component, wherein an electronic component stored in a tray fixed to a fixture is removed from the tray by a mounting device and mounted on a substrate. At this time, a method is used in which a mark indicating the direction is attached to the electronic component in advance, the mark is detected, and the direction of the electronic component is recognized based on the mark direction.

According to a second aspect of the present invention, there is provided an electronic component recognizing method for correcting and rotating an electronic component in which a marking direction has been detected according to the first aspect so that the marking direction is a marking direction when the electronic component is mounted. First, a control command is issued to the mounting device.

According to these methods, when supplying electronic components for mounting a substrate, even if the electronic components are incorrectly stored in the tray or the tray is incorrectly mounted on the fixture, the electronic components may be incorrectly mounted. The mounting device is controlled based on a control command for correcting and rotating the component, and the electronic component is rotated to correct the mounting direction on the board.

Hereinafter, an electronic component recognition method according to an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a configuration diagram schematically showing an electronic component mounting apparatus for explaining an electronic component recognition method according to the present embodiment. FIG. FIG. 3 is a configuration diagram of an electronic component mounted by the electronic component recognition method according to the embodiment.

In this electronic component recognition method, when the electronic component 2 is manufactured, as shown in FIG. 2, a recognition device 7 shown in FIG.
For example, a mark 1 such as an equilateral triangle, which can be automatically recognized by and can indicate the direction of the electronic component 2, is attached.
The mark 1 is attached to all electronic components, and its shape and type are desirably standardized in the electronic component industry.
As shown in FIG.
And the tray 3 is fixed to the fixture 4,
The fixtures 4 to which the trays 3 are fixed in such a manner are stored in the case 10 in a state of being stacked in a plurality of stages.

When the electronic component 2 stored in the recess 3a of the tray 3 is mounted on the substrate 5, all of the electronic components 2 represented by the three-dimensional coordinates on the coordinate axes X, Y, and Z are first set. The mounting device 6 movable in the position direction sequentially takes out the electronic components 2 in the uppermost tray 3 of the case 10.

Next, the electronic component 2 taken out of the tray 3 and held by the mounting device 6 first stops on the recognition device 7. Thus, the recognition device 7 detects the mark 1 attached to the electronic component 2 as shown in FIG. 2 and recognizes which direction the electronic component 2 is currently facing. At this time, the displacement between the center of the electronic component 2 and the center of the mounting device 6 is also measured as in the related art.

Further, when the electronic component 2 is mounted on the board 5, a control device (not shown) writes data describing the direction in which the mark 1 in FIG. 2 should face (the mounting of the electronic component 2 on the board 5 is started). Data generated by the operator before) and data generated by the recognition device 7 corresponding to the current orientation of the electronic component 2 recognized by the mark 1 on the electronic component 2 held in the mounting device 6. And gives a control command to the mounting device 6 so as to correct and rotate the electronic component 2 by an angle corresponding to the difference.

The mounting device 6 controlled based on the control command given from the control device as described above
Is rotated to correct the mounting direction of the electronic component 2 on the substrate 5 and the amount of displacement of the electronic component 2 is corrected, and the electronic component 2 is mounted on the substrate 5.

According to the above-described method, when supplying the electronic components to be mounted on the substrate, visual checking and reworking of the supply direction of the electronic components can be eliminated, and the overall work efficiency in the production of the substrate can be improved. At the same time, it is possible to suppress an increase in product cost. In addition, even now, in addition to the fact that many electronic components have their models and manufacturer names, it is possible to easily standardize the marking of electronic components in the electronic component industry to indicate their directions. .

[0024]

As described above, according to the present invention, when supplying an electronic component for mounting a substrate, the electronic component is incorrectly stored in a tray or the tray is incorrectly mounted on a fixture. In this case, the mounting device can be controlled based on a control command for correcting and rotating the electronic component, and the electronic component can be rotated and corrected in the mounting direction on the board.

Therefore, when supplying the electronic components for mounting the substrate, visual checking and reworking of the supply direction of the electronic components can be eliminated, and the overall work efficiency during the production of the substrate can be improved, and the product can be improved. Cost increase can be suppressed.

In addition to the fact that many electronic parts have their models and manufacturer names written,
The provision of a mark indicating the direction of an electronic component can be easily standardized in the electronic component industry.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an electronic component recognition method according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an electronic component in the electronic component recognition method according to the embodiment;

FIG. 3 is a plan view showing a tray storing electronic components in an incorrect orientation.

FIG. 4 is a plan view showing a tray fixed to a fixture in a wrong direction.

FIG. 5 is an explanatory diagram of a conventional electronic component recognition method.

[Explanation of symbols]

 1 mark 2 electronic components

Continued on the front page (72) Inventor Makoto Seno 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] When an electronic component stored in a tray fixed to a fixture is taken out of the tray by a mounting device and mounted on a substrate, a mark indicating the direction of the electronic component is marked on the electronic component in advance. An electronic component recognizing method for detecting the direction of the electronic component based on the direction of the mark. 2. The mounting device according to claim 1, wherein a control command is issued to the mounting device so as to correct and rotate the electronic component whose mark direction has been detected so that the mark direction becomes the mark direction when the electronic component is mounted. Electronic component recognition method.