JPH09326594A - Electronic component mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a shortest recognizing operation time by generating a recognition sequence for sequentially executing recognizing operation from an electronic component mounting position near the recognition camera depending on analysis result of all electronic component mounting positions in an NC data and the executing the recognizing operation depending on such a sequence. SOLUTION: The mounting coordinates X1 to Xn, Y1 to Yn of NC data are read to a memory and the mounting coordinates in the shortest distance from the recognition camera positions X, Y are selected by algorithm and is then added to the recognition sequence line. In the same manner, the mounting coordinates in the shortest distance from the recognition camera positions X, Y and a number of recognition camera in the short distance from the mounting coordinates is selected and is then added to the recognition sequence line. Subsequently, after all mounting coordinates are added to the recognition operation, the recognition operation is executed depending on this recognition sequence line. As a result, the operation time required when the recognition operation is performed depending on the recognition sequence line of the invention can be shortened than the time required for recognition operation depending on the mounting sequence of NC data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when mounting an electronic component on a board, detects the mounting position by image processing and corrects the position. The present invention relates to a method of mounting an electronic component that minimizes the recognition operation time and shortens the recognition operation time.

[0002]

2. Description of the Related Art Hereinafter, a recognition operation sequence in a conventional mounting position correction of an electronic component of this type will be described with reference to the drawings.

FIG. 16 is a flow chart showing a processing procedure from image capturing at all electronic component mounting positions before mounting at the electronic component mounting position to completion of mounting, when mounting electronic components on a board. Is shown in FIG.
As shown in, the mounting position image capturing image processing detects the mounting position of the electronic component, and then the electronic component is mounted on the board in the mounting process of the electronic component.

[0004]

However, in the above-described conventional electronic component mounting method, the recognition operation is performed according to the NC data mounting sequence as shown in FIG. 17 during the recognition operation. When the mounting order of data is not optimized so that the movement amount of the XY table is the shortest at the time of mounting, the movement amount of the XY table at the time of recognition operation is not the shortest, and the mounting order of NC data is mounted. Even when the movement amount of the XY table is sometimes optimized, when multiple recognition cameras are installed, the optimized order of electronic component mounting order is the optimum order during the recognition operation. Therefore, unnecessary movement of the XY table occurs during the recognition operation, and as a result, the recognition operation time is wasted.

Further, when the recognition correction is performed using a plurality of conventional recognition cameras, the recognition sharing range of each recognition camera is not specified, so that the shortest XY at the time of the recognition correction operation.
There was a problem that the recognition operation could not be performed with the amount of table movement.

The present invention solves such a conventional problem,
The recognition operation is performed in the optimal order during the recognition operation, and the shortest XY
It is an object of the present invention to provide a mounting method of an electronic component that can perform a recognition operation with the amount of movement of a table and minimize the recognition operation time.

[0007]

In order to solve this problem, the present invention analyzes all electronic component mounting positions in NC data before executing a recognition operation, and based on this analysis result, an electronic component close to a recognition camera. This is a method of creating a recognition order for performing the recognition operation in order from the mounting position and performing the recognition operation according to the order.

According to the present invention, the recognition operation can be performed with the minimum XY table movement distance, and the recognition operation time can be minimized.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION According to the first aspect of the present invention, when the mounting position of an electronic component to be mounted on a board is recognized using a recognition camera and then mounting is performed, the NC data is mounted first. The coordinates are read, and then the insertion coordinates that are at the shortest distance from the recognition camera position on the board are selected based on the read mounting coordinates and added to the recognition order sequence. In addition to the above, the present invention is an electronic component mounting method for determining a recognition sequence and performing recognition, and the movement distance of the XY table at the time of recognition operation is minimized, and the recognition operation can be performed in the shortest time. Have.

According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of recognition cameras for recognizing the shared ranges are used, and the insertion coordinates at the shortest distance are sequentially selected from the respective recognition cameras. A method for determining a recognition order sequence, which has the function of claim 1,
This has the effect that the recognition operation can be performed in a shorter time.

According to a third aspect of the present invention, in the method according to the second aspect of the present invention, the sharing range of the plurality of recognition cameras is eliminated, and the recognition operation is performed in the shortest time using the plurality of recognition cameras. It has the effect of being able to perform.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a flowchart showing a processing procedure of a recognition order optimizing method according to the embodiment, and this flowchart will be described as a basis.

First, the mounting coordinates X _{1 of the} NC data shown in FIG.
˜X _n , Y ₁ ˜Y _n are read into the memory, and the mounting coordinates at the shortest distance from the recognition camera positions X _c , Y _c shown in FIG. 3 are selected by the algorithm shown in the flowchart in FIG. 4 and added to the recognition sequence. .

[0014] Hereinafter, the recognition camera position X _c in the same way, Y _c
The mounting coordinates at the shortest distance from and the number of the recognition camera at the shortest distance from the mounting coordinates are selected and added to the recognition sequence shown in FIG.

Subsequently, as shown in FIG. 6, after all the mounting coordinates have been added to the recognition order sequence, the recognition operation is performed in accordance with this recognition order sequence.

FIG. 7 shows the locus of the mounting head when the recognition operation is performed according to the mounting order of the NC data, and FIG. 8 shows the locus of the mounting head when the recognition operation is performed according to the recognition order sequence.

As a result, the operation time required when the recognition operation is performed according to the NC data mounting order is 18.38 seconds, and the operation time required when the recognition operation is performed according to the recognition order sequence according to the present embodiment. This is 15.42 seconds, which makes it possible to reduce the time by 2.96 seconds.

[0018] If the (Embodiment 2) Next recognition camera is two, read mounting coordinates X ₁ to X _n of the NC data, the Y ₁ to Y _n in the memory, the recognition of the recognition camera 1 shown in FIG. 9 Recognition camera positions X _c1 , Y _c1 in the mounting coordinates within the sharing range
The recognition camera positions X _c2 and Y _c2 in the mounting coordinates in the shortest distance from the mounting coordinates and in the mounting coordinates in the recognition sharing range of the recognition camera 2.
From among the mounting coordinates at the shortest distance from the mounting coordinates, the distance between each recognition camera and the mounting coordinates at the shortest distance from the recognition camera is shorter, and the number of the recognition camera at the shortest distance from the mounting coordinates is shown in FIG. It is selected by the algorithm shown in and added to the recognition sequence.

Subsequently, after all the mounting coordinates have been added to the recognition order sequence, the recognition operation is performed in accordance with this recognition order sequence.

FIG. 11 shows the locus of the mounting head when the recognition operation is performed according to the mounting order of the NC data, and FIG.
3 shows the locus of the mounting head when the recognition operation is performed according to the recognition sequence created when there are two recognition cameras.

As a result, the operation time required when the recognition operation is performed according to the mounting order of the NC data is 14.52 seconds, and the operation time required when the recognition operation is performed according to the recognition order sequence according to the present embodiment. 8.43 seconds,
It is possible to shorten the time by 6.09 seconds.

[0022] If the (Embodiment 3) Next recognition camera is two, read mounting coordinates X ₁ to X _n of the NC data, the Y ₁ to Y _n in the memory, the recognition camera position X _c1 shown in FIG. 13 ，
Of the mounting coordinates that are the shortest distance from Y _c1 and the recognition camera position X _c2 and the mounting coordinates that are the shortest distance from Y _c2 , the distance between each recognition camera and the mounting coordinate that is the shortest distance from the recognition camera is the shorter one. The mounting coordinates and the number of the recognition camera that is the shortest distance from the mounting coordinates are selected by the algorithm shown in FIG. 8 and added to the recognition sequence.

In this case, the recognition sharing range of each recognition camera is not limited, and the recognition camera having the mounting coordinates at the shortest distance from the recognition camera position is used for the recognition operation.

Subsequently, after all the mounting coordinates have been added to the recognition sequence, the recognition operation is performed according to this recognition sequence.

FIG. 14 shows the locus of the mounting head when the recognition operation is performed in accordance with the recognition order sequence created by limiting the recognition allotment range of the recognition camera, and FIG. 15 without limiting the recognition allotment range of the recognition camera. The locus of the mounting head when the recognition operation is performed according to the created recognition sequence is shown.

As a result, the operation time required when the recognition operation is performed according to the recognition order sequence created by limiting the recognition sharing range of the recognition camera is 15.54 seconds, and the recognition sharing of the recognition camera according to the present embodiment is carried out. The operation time required when the recognition operation is performed according to the recognition sequence created without limiting the range is 15.03 seconds, and the time can be shortened to 0.51 seconds.

[0027]

As described above, according to the present invention, the recognition NC
The effect that the XY table movement distance during the electronic component mounting position recognition operation can be minimized and the recognition operation time can be shortened without being affected by the data mounting order.

[Brief description of drawings]

FIG. 1 is a flowchart showing a processing procedure of a recognition operation sequence according to a first embodiment of the present invention.

[Figure 2] mounting coordinates X ₁ to X _n of the NC data, schematic diagram showing a Y ₁ to Y _n

FIG. 3 is a plan view showing the recognition camera positions X _c and Y _c .

FIG. 4 is a flowchart of an algorithm for selecting a mounting position located at the shortest distance from the recognition camera.

FIG. 5 is a schematic diagram showing the same recognition order sequence.

FIG. 6 is a schematic diagram showing the completed recognition sequence.

FIG. 7 is a plan view showing the locus of the mounting head when the recognition operation is performed according to the mounting order of the NC data.

FIG. 8 is a plan view showing a trajectory of a mounting head when a recognition operation is performed according to the same recognition sequence.

FIG. 9 is a plan view showing camera positions when there are two recognition cameras according to the second embodiment.

FIG. 10 is a flowchart of an algorithm for selecting the mounting position located at the shortest distance from the recognition cameras when there are two recognition cameras.

FIG. 11 is a plan view showing the locus of the mounting head when the recognition operation is performed according to the mounting order of NC data when there are two recognition cameras.

FIG. 12 is a plan view showing the locus of the mounting head when the recognition operation is performed according to the recognition sequence created when there are two recognition cameras.

FIG. 13 is a plan view showing camera positions when there are two recognition cameras according to the third embodiment.

FIG. 14 is a plan view showing a locus of a mounting head when a recognition operation is performed according to a recognition order sequence created by limiting a recognition sharing range of the recognition camera.

FIG. 15 is a plan view showing the locus of the mounting head when the recognition operation is performed in accordance with the recognition order sequence created without limiting the recognition sharing range of the recognition camera.

FIG. 16 is a flowchart showing a processing procedure from image capturing to mounting in the electronic component mounting apparatus.

FIG. 17 is a flowchart showing a processing procedure of a conventional recognition operation sequence.

Claims (3)

[Claims] 1. When recognizing a mounting position of an electronic component to be mounted on a board by using a recognition camera and then mounting, first, mounting coordinates of NC data are read, and then based on the read mounting coordinates. The insertion coordinates that are the shortest distance from the position of the recognition camera on the board are selected and added to the recognition order sequence, and the electronic components to be mounted are sequentially added to the recognition order sequence in the same manner to determine the recognition order sequence and perform recognition. How to mount electronic components. 2. The electronic apparatus according to claim 1, wherein a plurality of recognition cameras for recognizing the respective shared ranges are used, and the recognition coordinate sequence is determined by sequentially selecting insertion coordinates at the shortest distance from each recognition camera. How to mount parts. 3. The method of mounting an electronic component according to claim 2, wherein the shared ranges of the plurality of recognition cameras are eliminated.