JPH0722782A - Mounting method for electronic component - Google Patents

Abstract

PURPOSE:To precisely judge the feed error of an electronic component at an electronic- component insertion machine and to prevent the production of a defective printed- circuit board by providing a process wherein the color code of the electronic component is recognized visually, an electric characteristic is read out and the electric characteristic is compared with the electric characteristic of an electronic component which has been input in advance to an electronic-component mounting machine. CONSTITUTION:Regarding the electric characteristic of an electronic component which has been loaded in advance on an electronic-component insertion machine, color names of color bands are input for every color band on the basis of the provisions on the display of a rating by a color code. Then, the electric characteristic is read out from the color code of the electronic component at a timing at which the electronic component is fed just under a color-code recognition device 6 installed at the upper part of an electronic-component feed device 2. Then, a rated value which has been input in advance and which has been obtained from a color name for every color band for the electronic component and information on a tolerance are compared with the recognized result of the color code. When they coincide, it is judged that no discrepancy of the electronic component exists, and the electronic component is taken out from the component feed device 2 and inserted into a designated printed-circuit board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting electronic components by an electronic component mounting machine.

[0002]

2. Description of the Related Art In recent years, with downsizing of electronic equipment products, high density packaging has been promoted also in the field of electronic component packaging, and good product production is desired.

The conventional electronic component insertion method will be described below.
This will be described with reference to FIGS. FIG. 3 is a schematic configuration diagram of the electronic component inserting machine. Reference numeral 1 denotes a component supply unit, to which a plurality of component supply devices 2 are attached. 3 is an insertion head device with an electric characteristic measuring function.
4, the electric characteristic measuring unit 4 is added to the insertion head 5, and the electronic component 7 is taken out from the component supply device 2 and the electronic component 7 is chucked. Is to measure the electrical characteristics of.

A conventional electronic component inserting process in the electronic component inserting machine thus constructed will be described with reference to FIG. First, the electric characteristics of the electronic component 7 to be mounted in advance are input to the electronic component inserting machine (step # 11).
The electrical characteristics of the electronic component 7 input here means the electronic component 7
It is the rated value and tolerance of. Next, in the electronic component insertion machine, the insertion head 5 takes out the electronic component 7 from the component supply device 2 of the designated component supply unit 1 (step # 12). Next, the electrical characteristic measuring unit 4 measures the electrical characteristic of the taken-out electronic component 7 (step #
13). Next, this measurement result is compared with the electric characteristics of the electronic component 7 which are input in advance, and it is determined whether the rated values match within the tolerance range (step # 1).
4). If they do not match, it is determined that the predetermined electronic component 7 is not mounted on the component supply device 2 (component mounting error), the electronic component insertion machine is stopped, and then the operator corrects the component mounting error (step # 15), step again #
Return to 12. If they match, the insertion head 5 inserts the electronic component 7 into a specified position on the designated printed circuit board (step # 16).

[0005]

However, in the electronic component insertion method as described above, the insertion head device 3 with the electrical characteristic measuring function is used when determining the component mounting error.
Since the characteristic is measured by directly contacting the electrode with the electronic component 7, there is a problem that the electrical characteristic of the electronic component 7 cannot be reliably measured when contact failure occurs. Further, since the electrode is brought into direct contact with the electronic component 7 as described above, the operation speed of the electronic component insertion machine is set low or the operation speed of the insertion head device 3 with an electric characteristic measuring function is reduced so as to prevent contact failure of the electrode due to mechanical vibration. The measurement must be stopped and the measurement cannot be performed at high speed. Further, since the insertion head device 3 with the electric characteristic measuring function measures only the rated value of the electronic component 7, the rated value is equal, such as the metal film and the carbon film of the surface mounting cylindrical resistor, but the resistor is not used. It is not possible to determine up to the type of a part classified by type. Similarly, since the rated value is measured as the actual measurement value,
It was necessary to input the tolerance of the resistor into the electronic component inserting machine in advance, which required man-hours.

The present invention solves the above problems, and can accurately judge a component supply error in an electronic component mounting machine such as an electronic component insertion machine, and prevent the production of defective printed circuit boards, thereby producing a good product. It is an object of the present invention to provide an electronic component mounting method capable of realizing the above.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention defines the electrical characteristics of various electronic components mounted on an electronic component mounting machine by a color code-based rating display on an electronic component insertion machine. Based on the above, the step of inputting beforehand, the step of visually recognizing the color code of the electronic component by the electronic component mounter and reading the electrical characteristics, and the step of visually recognizing and reading the electrical characteristics of the electronic component are performed by the electronic component mounter. It is provided with a step of comparing with the electric characteristics of the electronic parts which are inputted in advance.

[0008]

According to the above method, when a supply error such as a mounting error of an electronic component is determined, the electrical property of the electronic component can be read in a contactless manner by color code recognition, so that the electrical property of the electronic component can be reliably read. it can. In addition, the color code recognition enables measurement while keeping the operation speed high without considering the mechanical vibration of the electronic component mounter. Further, it is possible to discriminate by classifying even the parts such as the surface-mounting cylindrical resistor having the same electric characteristics and having the metal film and the carbon film classified by the color. Therefore, the electronic component inserting machine can accurately determine the component mounting error, so that the production of defective printed circuit boards can be prevented and the production of good products can be realized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic component inserting method according to an embodiment of the present invention will be described below with reference to FIGS. Figure 2
FIG. 1 is a schematic configuration diagram of an electronic component insertion machine that realizes the present embodiment, and those having the same functions as those of the related art are designated by the same reference numerals and description thereof will be omitted.

A color code visual recognition device 6 is a device for visually recognizing the color code of the electronic component and reading the electrical characteristics from the result. Although not shown, the electronic component insertion machine is provided with a means for inputting the electrical characteristics of various electronic components mounted on the electronic component insertion machine based on the regulation of the rating display by a color code, Control means for controlling each part is provided. The electronic component inserting method in this electronic component inserting machine will be described with reference to the flowchart of FIG.

First, a color name of a color band is input for each color band in advance based on the standard of rating display by a color code for the electrical characteristics of the electronic part to be mounted in the electronic part inserting machine in advance, and the surface mounting cylinder is mounted. For parts whose type is divided by the paint color of the resistor, such as a resistor, also enter the paint color (step # 1). Next, in the component supply device 2 of the electronic component insertion machine, the electrical characteristics of the electronic component are read at the timing when the electronic component is sent directly below the color code visual recognition device 6 provided on the electronic component supply device 2 (step # 2). The color code recognition in this step # 2 is to read the color name for each color band of the electronic component based on the regulation of the rating display by the color code, obtain the resistance value and the tolerance from the color name for each color band, and calculate the electronic component. The type of the part is read by the coating color of. Next, information on the rated values and tolerances and the types of parts obtained by the electronic parts insertion machine from the color name of each color band of the electronic parts and the paint color of the electronic parts that has been entered in the electronic parts insertion machine in advance, and the color The result of the code recognition is compared to determine whether they match (step # 3). If they do not match, it is determined that the electronic components are hung up, and the electronic component insertion machine is stopped.
After that, the worker corrects the wrong fitting of the parts (Step #
4) Then, the process returns to step # 2 again. If they match, it is determined that there is no mistake in mounting the electronic component, and the insertion head 5 takes out the electronic component from the component supply device 2 (step # 5),
The electronic component is inserted into the designated position on the printed circuit board (step # 6).

As described above, according to the present embodiment, in the electronic component insertion machine, when determining a component mounting error, the electrical characteristics of the electronic component can be read in a non-contact manner by color code recognition. The electrical characteristics can be read reliably. Further, the color code recognition enables measurement while keeping the operation speed high without considering the mechanical vibration of the electronic component inserting machine. Further, it is possible to discriminate by classifying even the parts such as the surface-mounting cylindrical resistor having the same electric characteristics and having the metal film and the carbon film classified by the color.

Further, in addition to the steps described above, it is possible to use a means for using an insertion head with an electric characteristic measuring function and color code recognition together. In this case, the tolerance of the resistance value can be read by color code recognition. Therefore, it is possible to save the trouble of inputting the tolerance to the electronic component inserting machine in advance.

As described above, since the electronic component inserting machine can accurately judge the component mounting error, it is possible to prevent the production of defective printed circuit boards and to realize the production of non-defective products. Further, the productivity of the printed circuit board can be improved by speeding up the electronic component inserting machine and shortening the work time by reducing the step of inputting the tolerance.

In the above embodiment, the case where the color-coded rating electronic component is inserted has been described, but it can be easily applied to the case where the color-coded rating electronic component is mounted by cream solder or the like.
It can be implemented as a method of mounting these electronic components.

[0016]

As described above, according to the present invention, the electrical characteristics of various electronic components mounted on the electronic component mounting machine are input to the electronic component mounting machine in advance based on the regulation of the rating display by the color code. And the step of visually recognizing the color code of the electronic component by the electronic component mounter and reading the electrical characteristics, and the electrical characteristics of the electronic component visually recognized and read are input to the electronic component mounter in advance. By providing the step of comparing with the electrical characteristics of the electronic component, the electronic component mounting machine can reliably read the electrical characteristics of the electronic component in a non-contact manner by color code recognition when determining a component mounting error. it can. In addition, the color code recognition enables measurement while keeping the operation speed high without considering the mechanical vibration of the electronic component mounter. Further, it is possible to discriminate by classifying even the parts having the same electric characteristics such as the surface-mounting cylindrical resistor and having the metal film and the carbon film classified by the color. Therefore, the electronic component mounter can accurately determine the component mounting error, so that the production of defective products on the printed circuit board can be prevented and the production of non-defective products can be realized. Further, the work speed can be shortened by increasing the speed of the electronic component mounter, and the productivity of the printed circuit board can be improved.

[Brief description of drawings]

FIG. 1 is a flowchart showing an electronic component inserting method according to an embodiment of the present invention.

FIG. 2 is a perspective view of an electronic component inserting machine according to the electronic component inserting method of the embodiment of the present invention.

FIG. 3 is a perspective view of a conventional electronic component inserting machine.

FIG. 4 is a front view of a main part of an insertion head device with an electric characteristic measuring function of a conventional electronic component inserting machine.

FIG. 5 is a flowchart showing a conventional electronic component insertion method.

[Explanation of symbols]

 1 Component Supply Unit 2 Component Supply Device 3 Insertion Head Device 4 Electrical Property Measuring Unit 5 Insertion Head 6 Color Code Visual Recognition Device

Claims (1)

[Claims] 1. A step of preliminarily inputting the electric characteristics of various electronic components mounted on the electronic component mounter to the electronic component mounter based on the regulation of the rating display by a color code, and electronically by the electronic component mounter. The process of visually recognizing the color code of the component and reading the electrical characteristics and the process of visually recognizing and reading the electrical characteristic of the electronic component with the electrical characteristic of the electronic component which is input in advance in the electronic component mounting machine are compared. An electronic component mounting method having.