JPH0766595A - Correction method of mounting failure of electronic component - Google Patents

Abstract

PURPOSE:To eliminate a failure of a fixing method of a component installation container and a component arrangement direction in a supply device of a component by making a correction during attraction or mounting by detecting an angle of a component installation container (pallet) of a supply device of a component of an electronic component mounting device and an angle of a component. CONSTITUTION:Four corners of a pallet 1 are searched by moving a tray 2 in directions of arrows (c), (d) and a supply head 3 attached with a sensor 10 in directions of arrows (a), (b). A crack of the pallet 1 is located, information is sent to a controller 11, a value thereof is subtracted from attraction or mounting angle of a part and correction is performed by rotation during attraction or mounting by a main head 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correctly correcting the mismounting by determining the installation direction of a pallet in an electronic component mounting machine, the misangled amount or the misrotated amount at the time of sucking or mounting the components.

[0002]

2. Description of the Related Art Below, a description will be given of a component direction determination and a component supply mechanism in a conventional electronic component mounter.

FIG. 6 is a schematic plan view showing the structure of a parts installation container (hereinafter referred to as a pallet). The pallet 1 has various installation numbers and shapes for each part, and parts (not shown) are placed on it. Installed in the feeding device (not shown). At the corner of this pallet 1, a mark 1 indicating the correct installation direction
have a.

FIG. 7 is a schematic plan view of the component supply mechanism of the electronic component mounter, in which the pallet 1 is fixed to the tray 2 and the tray 2 is pulled out in the direction of arrow c. There, the component is adsorbed by the nozzle (not shown) of the supply head 3, conveyed in the direction of arrow b, and placed on the unloading device 4. The carry-out device 4 moves in the direction of the arrow a, and is picked up by the nozzle of the main body head of the electronic component mounting machine (not shown) and mounted.

FIG. 8 is a schematic plan view of a QFP as an example of an electronic component. 5a is a cut, 6 is a package, 7 is a lead, 8 is a letter drawn on the package 6, and 9 is a letter drawn on the package 6. It is the mark 9 that is drawn. The orientation of the component of this QFP is generally determined by looking at the cut 5a of the QFP 5 with a recognition camera. In some cases, the direction is determined by a pattern (mark 9) above or below the package 6.

[0006]

However, when the operator supplies the parts to the supply device, the operator may make a mistake in the direction in which the parts are arranged on the pallet or the pallet installation direction. In that case, there arises a problem that components are mounted in the wrong direction. Also, as shown in FIG. 8, parts (QFP)
The method of discriminating the direction by the notch 5a is low in accuracy because of burrs of parts. Further, the method of discriminating between the upper and lower sides of the pattern (mark 9) of the package 6 cannot be supported because the positions of the mark 9 and the character 8 are different depending on the parts.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to eliminate mistakes in the pallet installation direction and component arrangement direction in a component supply device by correcting the component during suction or mounting. .

[0008]

In order to solve the above problems, the first means of the present invention is to determine the installation direction of a parts installation container (pallet) with a sensor, and to use the information of the installation direction from the sensor. The feature is that the correction is performed only for the mis-angle when the component is picked up or mounted.

The second means is to recognize the mark, character, etc. of the part by the camera, determine the direction of the mark, character, etc., and to identify the part based on the information on the direction of the mark, character, etc. from the camera. The feature is that correction is performed only for the misrotation at the time of adsorption or mounting.

[0010]

According to the present invention, (1) the position of the cutting edge 1a of the pallet 1 shown in FIG. 6 is discriminated by the sensor so that (b) and (c) are changed from the original position (a) as shown in FIG. ), As shown in (d), it is possible to determine how many deviations there are.

(2) As shown in FIG. 2, the camera recognizes which position (a) to (d) where the mark 9 of the component is divided into four, and which package 6 of the component is divided. The angle is determined by inputting whether there is a mark at the position and comparing the data.

(3) The angle is determined by determining the direction of the letter (A) 8 of the package 6 of the component as shown in FIG.

If the deviation of the angle or the rotation amount is discriminated by the above methods (1) to (3), the component is correctly mounted by subtracting the angle from the actual suction or mounting angle.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 4 is a schematic plan view of a component supply device for detecting the position of the pallet for carrying out the method of the present invention.
In FIG. 4, the tray 2 moves in the directions of arrows c and d, and the supply head 3 attached with the sensor 10 moves in the directions of arrows a and b, thereby searching the four corners of the pallet 1 (see FIG. 1).
The position of the slit 1a is determined. The information is sent to the controller 11, the value is subtracted from the suction or mounting angle of the component in the controller 11, and the main body head 12 is rotated at the time of suction or mounting to correct the value.

FIG. 5 is a schematic plan view of the mechanism for detecting the angle of the component for carrying out the method of the present invention by the mark 9 or the character 8. In FIG. 5, a camera 13 that recognizes the substrate of the main body head 12 of the mounting machine is connected to a recognition processing device 14. When the main body head 12 sucks the component supplied by the unloading device 4 as shown in FIG. 4, the substrate recognition camera 13 images the component. The data is processed by the recognition processing device 14,
The deviation of the angle of the component is detected from the mark 9 or the character 8 shown in FIG. 3, and the value obtained by subtracting the value from the component suction or mounting angle is rotated by the chuck 15 and corrected.

[0016]

As described above, according to the method of the present invention, even if the method of fixing the component installation container (pallet) of the component supply device in the electronic component mounting machine or the component arrangement direction is mistaken, the method of adsorption or mounting It is possible to make corrections. As a result, non-defective product production mounting is realized.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a parts installation container (pallet) for explaining the operation of the present invention.

FIG. 2 is a schematic plan view in the case of detecting an angle of a component with a mark for explaining the operation of the present invention.

FIG. 3 is a schematic plan view in the case of detecting an angle of a part by a character, which explains an operation of the present invention.

FIG. 4 is a schematic plan view of a component supply device for detecting the position where the pallet is being cut for carrying out the method of the present invention.

FIG. 5 is a schematic plan view of a mechanism for detecting the angle of a component for carrying out the method of the present invention with a mark or a character.

FIG. 6 is a schematic plan view showing the configuration of a component installation container (pallet) in the electronic component mounter.

FIG. 7 is a schematic plan view of a component supply device in an electronic component mounter.

FIG. 8 is a schematic plan view of a QFP as an example of an electronic component.

[Explanation of symbols]

1 ... Parts setting container (pallet), 1a, 5a ...
2 ... Tray, 3 ... Supply head, 4 ... Unloading device,
5 ... QFP, 6 ... Package, 7 ... Lead, 8 ... Character, 9 ... Mark, 10 ... Sensor, 11 ... Controller, 12 ... Main body head, 13 ... Board recognition camera, 14 ...
Recognition processing device, 15 ... Chuck.

Claims (2)

[Claims] 1. An electronic component, characterized in that the installation direction of a component installation container is determined by a sensor, and the component is adsorbed or corrected by an error angle when mounting based on the information on the installation direction from the sensor. Mounting error correction method. 2. The direction of a mark or a character is discriminated by recognizing a mark or a character of a component by a camera,
A method for correcting a mounting error of an electronic component, which corrects only a misrotation at the time of sucking or mounting a component based on information on directions of marks and characters from the camera.