KR100932549B1 - Inclination surface test method and inclination surface test apparatus for test workpiece of electron parts using the same - Google Patents

Abstract

The present invention provides an inclined surface inspection method for an inspection object of an electronic component. The inclined surface inspection method includes a first step of sequentially irradiating white light to the inclined surface at different angles with respect to an inspection object having inclined surfaces formed at both ends of the electronic component, and making different angles at the inclined surface. And a second step of sequentially extracting different color components from the reflected white light and synthesizing the extracted color components with each other to determine whether the inclined surface of the inspection object is inclined. A pair of different color information is extracted from the white light of the soldering part of the component, and the extracted color information can be used to easily determine whether the soldering part is based on various pattern information.

Soldering Section, Lifted

Description

Method for inspecting the inclined surface for the inspection object of the electronic component and device for inspecting the inclination surface of the inspection object using the same {Inclination SURFACE TEST METHOD AND INCLINATION SURFACE TEST APPARATUS FOR TEST WORKPIECE OF ELECTRON PARTS USING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inspecting an inclined surface for an object to be inspected for electronic components, and more particularly, extracting a pair of different color information from a white light to lift the soldering state of an electronic component installed on a printed circuit board. The present invention relates to an inclined surface inspection method for an inspection object of an electronic component and an inclined surface inspection device for an inspection object using the same, which can easily determine the quality of the soldering part based on various pattern information using the color information.

Typically, each electronic component having its own function is soldered onto a printed circuit board (PCB).

The soldering forms a very wide variety of soldering parts according to the amount of lead at the initial soldering time and the heating conditions during soldering, and the surface is formed as an inclined surface.

In addition, when mounting or inserting an electronic component on a printed circuit board by soldering, the state of the soldering portion is one of important factors that determine the reliability of the electronic circuit formed on the printed circuit board.

Therefore, inspection of the state of the soldering portion is very important in terms of improving the quality of the product.

In recent years, the electronic industry is increasingly seeking to reduce the size of all electronic devices, and accordingly, the demand for precision of soldering, which is a surface mounting technology of electronic components, is gradually increased.

That is, since the inspection work on the surface-mounted parts directly affects the quality of the product directly, research on an inspection method capable of performing the inspection work on the soldering portion at high speed and reliability is being actively conducted.

Conventionally, the methods for checking the quality and defect of the soldering part have used the principle of determining the abnormality of the soldering part by measuring the height distribution or the inclination of the soldering part which is the external shape of the soldering part.

That is, when light is incident on the soldering portion, as described above, the soldering surface is a mirror surface, so that the incident light is reflected from the soldering surface, and the reflected light is measured to measure the appearance.

When the object is mirror surface, most of the light is reflected in the direction determined according to the degree of the surface of the object. Therefore, the light whose direction is known is properly incident on the soldering part to check the direction of the reflected light. A method of detecting defects in solder parts has been used by measuring the distribution of the inclination of the metal parts and estimating the appearance of the solder parts.

As described above, the conventional representative method of inspecting the soldering portion by estimating the appearance shape of the soldering portion using light is as follows.

Conventionally, an electronic component mounted on a printed circuit board is acquired using a camera on the upper portion thereof.

Subsequently, the acquired image is binarized and the ratio of black and white pixels is compared with the set value to determine whether soldering is normally performed.

However, when the color image image is binarized into a black and white image as described above, it is difficult to set the level due to the secondaryization, and thus there is a problem in that it is difficult to distinguish the regions of the lead portion and the solder portion.

Further, US Pat. No. 5,032,735 discloses a method for inspecting a soldered portion using an inspection device composed of an optical sensor and a laser.

The inspection apparatus used in the method is a device for installing the optical sensor 22 on the five sides of the sensor fixing frame 21 and measuring the reflection angle of the laser beam to measure the soldering portion, the laser beam 25 on the printed circuit board 1 When the laser emitted from the laser emitter 24 is incident on the surface of the soldering portion 3 while moving the laser beam at a predetermined interval by the laser scanning device 23 so that the incident light is incident vertically, the laser beam tends to be reflected. According to the surface normal of 3), it shall be divided into clockwise or counterclockwise depending on convex and concave cases.

If the soldering part is inspected by the method described above, the approximate shape of the soldering part can be measured from the reflection tendency of the laser beam. However, the conventional inspection method also distinguishes the lead lifting and the over soldering of the soldering part and solders the steep inclination parts. There is a problem that a subtest cannot be performed.

In addition, in the conventional soldering part inspection method, the inclination and height of the soldering part are estimated by the light reflected from the soldering part, and the quantity or defect of the soldering part is judged based on the estimated appearance shape to detect a defect occurring in the soldering part. Although it is possible to do this, it is difficult to identify the kind of defects generated in the soldering part, and it is necessary to correct the error because a lot of errors occur when performing the soldering part inspection, and it takes a long time to inspect the soldering part. .

The present invention has been made to solve the above problems, the first object of the present invention is to irradiate the white light to the electronic component mounted on the printed circuit board two colors of blue and red reflected from the inspection object of the electronic component Provided is a method of inspecting an inclined surface for an inspection object of an electronic part and an apparatus for inspecting an inclination surface of an inspection object using the same, which can extract information and determine whether the electronic component is good or not based on pattern information obtained by synthesizing the extracted color information. Is in.

The second object of the present invention is to determine the quality of the inspection object by using only two colors of blue and red color information from the white light irradiated to the inspection object, so that the soldering part is not lifted, including lifting inspection in the soldered part. The present invention provides an inclined surface inspection method for an inspection object of an electronic component capable of inspecting whether or not a normal inclined surface is formed in a short time, and an inclined surface inspection apparatus for an inspection object using the same.

The third object of the present invention is to use the pattern information obtained above as the reference information by storing the arrangement pattern of the color information, the ratio of the color information, and the density of the color information in the storage means, and this reference information provides a large amount for the same electronic component. The present invention provides an inclined surface inspection method for an inspection object of an electronic component which can be inspected by using the same and an inclined surface inspection apparatus for an inspection object using the same.

In the method for inspecting the inclined surface of the inspection object for an electronic component of the present invention for achieving the above object, an inspection object having an inclined surface formed at both ends of the electronic component is seated on a seating portion, and the seating is provided on both sides of the seating portion. The white light is irradiated to a first position of the inclined surface by using a first light source arranged to form a first acute angle with respect to the upper surface of the negative part, and the upper surface of the seating part is positioned above the first light source on both sides of the seating part. Irradiating white light to a second position of the inclined surface to intersect a path of white light irradiated to the first position using a second light source arranged to form a second acute angle with respect to the second acute angle, and using the color component inspection unit Blue light from the white light reflected at the first position of the surface and half at the second position of the inclined surface using the color component inspection unit Simultaneously extracting red light from the white light to be emitted and synthesizing the blue light and the red light which are independently extracted simultaneously at each position using the color component inspection unit together to determine whether the inclined surface of the inspection object.
In the case where the color component inspection unit is used, the inspection object including the inspection object positioned above the inspection object by using image acquisition means and reflected by white light irradiated to the first and second positions. Sequentially acquire the image information about the first position and the second position, and receive the sequentially obtained image information by using color component extraction means electrically connected to the image acquisition means. Extracting the blue light from the white light reflected at the first position from the extracted image information, and extracting the red light from the white light reflected at the second position, respectively, and using the color component synthesizing means electrically connected to the color component extracting means. The blue light and the red light extracted from the color component extraction means, respectively. Receiving the information and synthesize the blue light and red light with each other, using the discriminating means electrically connected to the color component synthesizing means, the synthesized blue light and red light is transmitted in the form of an electrical signal, both ends of the electronic component The blue light and the red light from the light emitting device determine whether the inclined surface of the inspection object is inclined according to an arrangement pattern, and the incidence of the inclined surface of the inspection object that is determined using storage means electrically connected to the determination means. It is desirable to store the ratio between the quality of the object and the defect of the inspection object received.
And the inspection object including the inspection object positioned on the inspection object and reflected by the white light irradiated to the first and second positions using an image acquisition means when using the color component inspection unit. Sequentially acquire the image information about the first position and the second position, and receive the sequentially obtained image information by using color component extraction means electrically connected to the image acquisition means. Extracting the blue light from the white light reflected at the first position from the extracted image information, and extracting the red light from the white light reflected at the second position, respectively, and using the color component synthesizing means electrically connected to the color component extracting means. The blue light and the red light extracted from the color component extraction means, respectively. Receiving the information and synthesize the blue light and red light with each other, and using the discriminating means electrically connected to the color component synthesizing means, receiving the synthesized blue light and red light in the form of an electrical signal to receive both the blue light and the red light By using a storage means electrically connected to the discriminating means by setting a total ratio to include, determining the quality of the inclined surface of the inspection object according to the degree of the ratio of the blue light or the red light of the total ratio. The ratio of the quality of the inspection object and the defect may be stored by receiving the result of the identification on the inclined surface of the inspection object to be determined.
Further, when the color component inspection unit is used, the inspection object including the inspection object positioned above the inspection object by the image acquisition means and reflected by white light irradiated to the first and second positions. Sequentially acquire the image information about the first position and the second position, and receive the sequentially obtained image information by using color component extraction means electrically connected to the image acquisition means. Extracting the blue light from the white light reflected at the first position from the extracted image information, and extracting the red light from the white light reflected at the second position, respectively, and using the color component synthesizing means electrically connected to the color component extracting means. For the blue light and the red light extracted from the color component extraction means, respectively. Receiving the information, combining the blue light and the red light with each other, and using the discriminating means electrically connected to the color component synthesizing means, the reference volume information which is previously set by receiving the synthesized blue light and the red light in the form of an electrical signal; The volume information of each of the blue light and the red light is compared with each other from the synthesized blue light and the red light to determine whether the inclined surface of the object is inspected, and the determination is performed using storage means electrically connected to the discriminating means. The ratio of the quality of the object to be inspected and the defect may be stored by receiving a result about the quality of the inclined surface of the object to be tested.
The volume information may include setting an inspection area for the inclined surface, sequentially selecting the blue light and the red light from all of the blue light and the red light extracted and synthesized in the inspection area to determine the content of the blue light and the red light. It is preferable that the content is calculated by calculating the content, respectively, matching the content with the inclination value corresponding to each of the blue light and the red light, and integrating the inclination value to calculate the volume of the inspection object.
An inclined surface inspection apparatus for an inspection object for an electronic component of the present invention for achieving the above object includes a seating portion on which an inspection object having an inclined surface formed at both ends of the electronic component is seated; First light sources disposed at both sides of the seating part to form a first acute angle with respect to the top surface of the seating part, and irradiating white light to a first position of the inclined surface; A second position of the inclined surface is disposed to form a second acute angle with respect to the upper surface of the seating portion so as to be located above the first light source on both sides of the seating portion, and to cross the path of the white light irradiated to the first position. A second light source for irradiating white light with; A third light source disposed above the seating portion and irradiating white light to an upper surface of the inclined surface to be perpendicular to a bottom surface of the inspection object; And simultaneously extracting red light from blue light reflected from a first position of the inclined surface and white light reflected from a second position of the inclined surface, and synthesizing the blue light and red light independently extracted simultaneously from each position to each other. And a color component inspection unit for determining the quality of the inclined surface of the inspection object.
Here, the color component inspecting unit is configured to display image information about the inspected object including the inspected object positioned on the inspected object and reflected by the white light emitted to the first and second positions. From image acquisition means for acquiring sequentially in two-position order, and white light electrically connected to said image acquiring means, and received from said sequentially acquired image information from said sequentially acquired image information at said first position; Color component extraction means for extracting blue light and extracting red light from the white light reflected at the second position, and information about the blue light and the red light extracted respectively from the color component extraction means and electrically connected to the color component extraction means; Is a color that synthesizes the blue and red light A discriminating means which is electrically connected to the component synthesizing means, the color component synthesizing means, and receives the synthesized blue light and the red light in the form of an electrical signal to discriminate whether the inclined surface of the test object is inclined. And storage means for receiving a result of the quality of the inspection object on the inclined surface of the inspection object and storing the ratio of the quality of the object to be inspected and the defect, wherein the determination means is provided from both ends of the electronic component. The blue light and the red light of the to determine whether or not to the inclined surface of the inspection object according to the array pattern, and the discriminating means is to determine the inspection object to be normal if the array pattern is arranged in order of blue light followed by red light. desirable.
The color component inspecting unit is configured to display image information about the inspected object including the inspected object positioned on the inspected object and reflected by the white light emitted to the first and second positions. From image acquisition means for acquiring sequentially in two-position order, and white light electrically connected to said image acquiring means, and received from said sequentially acquired image information from said sequentially acquired image information at said first position; Color component extraction means for extracting blue light and extracting red light from the white light reflected at the second position, and information about the blue light and the red light extracted respectively from the color component extraction means and electrically connected to the color component extraction means; Is a color that synthesizes the blue and red light A discriminating means which is electrically connected to the component synthesizing means, the color component synthesizing means, and receives the synthesized blue light and the red light in the form of an electrical signal to discriminate the good or bad of the inclined surface of the inspection object; And storage means for receiving a result of the good or bad for the inclined surface of the test object to be determined and storing a ratio of good or bad of the test object, wherein the discriminating means includes both the blue light and the red light. And determining the quality of the inclined surface of the inspection object according to the degree of the ratio of the blue light or the red light of the total ratio, wherein the discriminating means determines that the ratio of the blue light is greater than the ratio of the red light. In a relatively high case, the inspection object may be determined to be normal.
The color component inspector may further include image information about the inspected object including the inspected object positioned on the inspected object and reflected by the white light emitted to the first and second positions. From image acquisition means for acquiring sequentially in two-position order, and white light electrically connected to said image acquiring means, and received from said sequentially acquired image information from said sequentially acquired image information at said first position; Color component extraction means for extracting blue light and extracting red light from the white light reflected at the second position, and information about the blue light and the red light extracted respectively from the color component extraction means and electrically connected to the color component extraction means; Is a color that synthesizes the blue and red light A discriminating means, and discriminating means electrically connected to the color component synthesizing means and receiving the synthesized blue light and red light in the form of an electrical signal to discriminate whether the inclined surface of the test object is inclined. Storage means for receiving a result of the good or bad for the inclined surface of the object to be inspected and storing a ratio of the quality of the object to be inspected and the defect, wherein the discriminating means comprises: predetermined volumetric information; The volume information of each of the blue light and the red light may be compared with each other from the synthesized blue light and the red light to determine whether the surface of the test object is inclined.
The volume information may include setting an inspection area for the inclined surface, sequentially selecting the blue light and the red light from all of the blue light and the red light extracted and synthesized in the inspection area to determine the content of the blue light and the red light. It is preferable that the content is calculated by calculating the content, respectively, matching the content with the inclination value corresponding to each of the blue light and the red light, and integrating the inclination value to calculate the volume of the inspection object.

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 The present invention is based on the pattern information obtained by irradiating white light to an electronic component mounted on a printed circuit board to extract two color information of blue and red reflected from the inspection object of the electronic component, and synthesized the extracted color information It has an effect which can discriminate the quality of an electronic component.

In addition, the present invention determines the quality of the inspection object by using only two colors of blue and red color information from the white light irradiated to the inspection object, so that it is possible to lift the It is possible to check whether the inclined surface is formed in a short time.

In addition, the present invention stores the arrangement information of the color information, the ratio of the color information, and the density of the color information in the storage means to use the pattern information obtained as the reference information, and a large amount of inspection for the same electronic component with the reference information. It has an effect that can be done.

Hereinafter, an inclined surface inspection apparatus for inspecting an electronic component and an inclined surface inspection method for an electronic component using the same will be described with reference to the accompanying drawings.

Referring to FIG. 1, the apparatus for inspecting the inclined surface of the inspection object for an electronic component of the present invention is largely an inspection object such as a soldering part for fixing the electrodes 11 on both sides of the electronic component 10 to the printed circuit board 20. 15) the inspection object 15 of the electronic component 10 by using the light irradiation unit 100 for irradiating white light at different positions and a pair of color information extracted from the white light reflected from the inspection object 15. It consists of a color component inspection unit 200 for determining the positive and negative, and the seating portion 300 on which the electronic component 10 provided on both sides of the inspection object 15 is seated.

The configuration of the light irradiation unit 100 is as follows.

As shown in FIG. 1, the light irradiator 100 may emit white light on the inclined surface 15a of the inspection object 15 along a direction forming a first angle θ1 based on the bottom surface of the inspection object 15. A second light source for irradiating white light along a direction forming a first light source 110 for irradiating the light and a second angle θ2 larger than the first angle θ1 based on the bottom of the inspection object 15 ( 120 and a third light source 130 irradiating white light to the inclined surface 15a along a direction perpendicular to the bottom surface of the inspection object 15.

Here, the first angle θ1 and the second angle θ2 are included in the range of the normal axis with respect to the bottom surface of the inspection object 15 and the bottom surface of the inspection object 15.

The third light source 130 is a coaxial light source, and the white light irradiated from the third light source 130 may be along the direction perpendicular to the bottom surface of the inspection object 15 by the mirror 131.

Accordingly, the white light emitted from the first light source 110 and the second light source 120 having different irradiation angles may be irradiated to the inclined surface 15a of the inspection object 15 at different angles.

The first light source 110 and the second light source 120 sequentially irradiate the inclined surface 15a of the inspection object 15 with white light.

Here, the reason for irradiating the white light to the inspection object 15 using the first light source 110 and the second light source 120 according to the present invention is as follows.

First, when a character (not shown) is formed in the electronic component 10, when white letters are illuminated when the character is to be recognized, it is easy to distinguish between the electronic component and the character.

However, in the RGB color illumination, when the electronic component 10 and the character are of the red color series, character recognition cannot be facilitated because the electronic component 10 and the character are not distinguished.

Second, in the case where the electronic component 10 is to be mounted on the printed circuit board 20, the green component of the printed circuit board 20 is red and blue illumination. Since it is displayed in black, since the electronic component 10 and the printed circuit board 20 cannot be easily distinguished, white light is used to easily distinguish the electronic component 10 from the printed circuit board 20.

Third, in the case where warpage occurs in the printed circuit board 20, color illumination is more sensitive than the case in which the illumination is performed using white light, and thus the degree of reaction due to the warpage of the printed circuit board 20 is more sensitive. The occurrence of defects increases.

Therefore, the present invention uses white light to reduce such false falsehoods.

Next, the configuration of the color component inspection unit 200 is as follows.

The color component inspection unit 200 includes an image acquisition unit 210 disposed above the seating unit 300, a color component extraction unit 220 electrically connected to the image acquisition unit 210, and the color. A color component synthesizing means 230 electrically connected to the component extraction means 220, a discrimination means 240 electrically connected to the color component synthesizing means 230, and a color component synthesizing means 230. It consists of a storage means 250 connected to.

The image acquisition unit 210 acquires image information about the inspection object 15 reflected by the sequentially irradiated white light and the surroundings including the same.

The image information acquired by the image acquisition unit 210 is an image obtained by reflecting the white light irradiated from the first light source 110 and the second light source 120 onto the inclined surface 15a.

The color information extracting means 220 reflects the color for the blue light B from the image information of the inclined surface 15a of the inspection object 15 which is reflected and acquired due to the white light emitted from the first light source 110. Extract the ingredients.

Subsequently, the color for the red light R from the image information of the inclined surface 15a of the inspection object 15 that is reflected and acquired due to the white light irradiated from the first light source 110 from the second light source 120. Extract the ingredients.

The color information synthesizing means 230 synthesizes the pair of color components extracted simultaneously, that is, color information of blue and red.

Then, the discriminating means 240 acquires pattern information from the synthesized pair of color components, and determines whether the inclined surface 15a of the inspected object 15 is based on the pattern information.

The pattern information will be described.

The pattern information is an arrangement pattern of the color information in which the pair of different color information reflected from the inclined surface 15a of the inspection object 15 is sequentially arranged from a predetermined reference point of the inspection object 15.

Therefore, the determination unit 240 may determine whether the surface of the inspection object 15 is good or not according to the arrangement pattern of the color information.

Next, an example of determining whether the inclined surface 15a of the inspected object 15 is used using the array pattern will be described.

4A and 4C show a normal electronic component and a defective electronic component according to an arrangement pattern of color information according to the present invention. Illumination 1 in these figures may be horizontal light emitted from the first light source 110, and illumination 2 may be vertical light emitted from the second light source 120.

In the normal electronic component 10, electrodes 11 are formed at both sides of the component body 12, and the electrodes 11 are electrically coupled to the printed circuit board 20 at the outer side of the electrode 11. The inspection object 15 to be formed is formed. The inspection object 15 is a soldered portion having an inclined surface 15a.

In the case of the normal electronic component 10, the soldering portion has an inclined surface which is concave downward as shown in Fig. 4A.

Accordingly, the arrangement pattern formed by combining the color information for the blue light and the color information for the red light by the color information synthesizing means 230 according to the present invention is an array pattern of blue and red along the outside from the electrode 11. Has

Accordingly, the discriminating means 240 according to the present invention can determine that the inclined surface 15a of the inspection object 15 is normally formed by judging that it is a normal soldering part when it has the blue-red arrangement pattern.

In addition, the determination means 240 may transmit the above-described arrangement pattern to the storage means 250 in the form of an electrical signal and store the information in the storage means 250 as information for determining normality.

On the other hand, in the defective electronic component 10, electrodes 11 are formed at both sides of the component body 12, and the electrodes 11 are attached to the printed circuit board 20 at the outer side of the electrode 11. A soldering portion 15 for electrically coupling is formed, in the case of the defective electronic component 10, the soldering portion 15 has an upwardly convex inclined surface 15a as shown in FIG. 4B.

Accordingly, the arrangement pattern formed by combining the color information for the blue light and the color information for the red light by the color information synthesizing means 230 according to the present invention is an array pattern of red and blue along the outside from the electrode 11. Has

Accordingly, the discriminating means 240 according to the present invention judges the defective soldering portion in the case of having the red-blue arrangement pattern, and recognizes that the inclined surface 15a of the inspection object 15 is not normally formed. Can be.

In addition, the determination means 240 may transmit the above-described arrangement pattern to the storage means 250 in the form of an electrical signal and store it in the storage means 250 as information for determining a failure.

Meanwhile, the discriminating means 240 according to the present invention calculates a ratio of any one of the pair of color information with respect to the entire pair of different color information, thereby inclining the surface 15a of the inspection object 15. ) Can be determined.

4C shows the ratio of color information according to the invention to a defective electronic component. Illumination 1 in FIG. 4C may be horizontal light emitted from the first light source 110, and illumination 2 may be vertical light emitted from the second light source 120.

The determination means 240 receives a pair of color information synthesized from the color information synthesizing means 230.

The determination unit 240 may calculate a ratio of color information to the blue and the red.

That is, as shown in FIG. 4C, when the determination means 240 assumes 100% of the color information of all the blue and red colors, the ratio of the red color information is 70% more than the blue color information. You can see a large proportion.

Thus, the discriminating means 240 determines that the inclined surface 15a of the inspection object 15 is defective.

In addition, the determination means 240 may transmit the above ratio in the form of an electrical signal to the storage means 250 and store the information in the storage means 250 as information for determining a failure.

In addition, the determination means 240 may transmit the above ratio in the form of an electrical signal to the storage means 250 and store the information in the storage means 250 as information for determining a failure.

Meanwhile, referring to FIGS. 7 to 10C, the discriminating means 240 according to the present invention may store preset volume information and volume information calculated from the extracted different color components, that is, blue and red components. By comparing with each other, it is possible to determine whether the inclined surface of the inspection object.

It will be described how to achieve the volume information.

First, as shown in FIG. 7, the inspection area A for the inclined surface 15a is set.

Subsequently, the content of the selected color component is calculated by sequentially selecting the color components from all of the color components extracted in the inspection area A and synthesized with each other.

As shown in FIG. 8, the calculated content ratio of the color components is matched with an inclination value corresponding to each of the color components, that is, 'B / (B + R)' is calculated. Where B is Blue and R is Red '.

Next, as shown in FIG. 9, the inclination value is integrated to calculate a volume of the test object.

As shown in FIG. 8, a value set at a position where the value of B / (B + R) is raised along the Z axis means that the slope is steep, and a value set at a position which is lowered to near 0 along the Z axis is It is a graph of the result, which means that the slope is gentle.

Accordingly, by integrating the B / (B + R) values shown in FIG. 8, the actual volume of the inspection region including the inclined surface 15a of the electronic component 10 can be visually confirmed.

In the case shown in Fig. 9, volume information is displayed in which the inclination of the inclined surface 15a is steep and gradually gradually gradually along the left to right with respect to the X axis.

Here, the color information of the blue light is distributed in the steep region, and the color information of the red light is distributed in the gentle slope region.

In addition, the discriminating means 240 according to the present invention is preset reference volume information, and the lead portion 15 is defective when the calculated volume information is out of the range of the reference volume information by comparing with the reference volume information. Can be determined.

On the contrary, when the calculated volume information is included in the range of the reference volume information, the soldering unit 15 can be determined as good quality.

Here, the reference volume information may be a volume value from the calculated volume information or may be a B / (B + R) value shown in FIG. 8.

In addition, the determined result may be stored in the storage unit 240 of the present invention.

Accordingly, since the result of the determination of the quality of the soldering unit 15 of the electronic component 10 determined by the determination unit 240 is stored in the storage unit 250, By storing the ratio, you can check the defect rule of the product in a later process.

1 is a view showing an inclined surface inspection apparatus for the inspection object of the electronic component of the present invention.

2 is a block diagram showing the operation of the inclined surface inspection apparatus for the inspection object of the electronic component of the present invention.

3A is a view showing a substrate on which an electronic component in which color information of a blue component is extracted by color information extraction means according to the present invention is disposed.

3B is a view showing a substrate on which an electronic component in which color information of a red component is extracted by color information extraction means according to the present invention is disposed.

FIG. 3C is a view illustrating a substrate on which electronic components in which the blue component and the red component illustrated in FIGS. 3A and 3B are combined are arranged.

4A shows an arrangement pattern of color information according to the present invention for a normal electronic component.

4B shows an arrangement pattern of color information according to the present invention for a defective electronic component.

4C shows the ratio of color information according to the invention to a defective electronic component.

5 is a flowchart illustrating a method of inspecting an inclined surface for an inspection object of an electronic component of the present invention.

6 is a flowchart showing in detail a method for inspecting the inclined surface for the inspection object of the electronic component of the present invention.

7 is a view showing that the inspection area is selected by the discriminating means according to the present invention.

8 is a graph showing that the B / (B + R) value is measured by the discriminating means according to the present invention.

9 is a graph showing volume information calculated by the discriminating means according to the present invention.

10A is a graph showing that a B / (B + R) value is measured in an R region by a discriminating means according to the present invention.

10B is a graph showing that the B / (B + R) value is measured in the area B by the discriminating means according to the present invention.

** Description of symbols for the main parts of the drawing **

100: light irradiation unit 110: first light source

120: second light source 130: third light source

200: color component inspection unit 210: image acquisition means

220: color component extraction means 230: color component synthesis means

240: discrimination means 250: storage means

300: seating part

Claims (16)

An inspection object having an inclined surface formed at both ends of the electronic component is seated on the seating portion, White light is irradiated to a first position of the inclined surface by using a first light source arranged to form a first acute angle with respect to the upper surface of the seating portion on both sides of the seating portion, The inclination to intersect the path of the white light irradiated to the first position using a second light source disposed to form a second acute angle with respect to the upper surface of the seating portion so as to be positioned above the first light source on both sides of the seating portion; Irradiates white light to the second position on the surface, Simultaneously extract blue light from the white light reflected at the first position of the inclined surface using a color component inspector and red light from the white light reflected at the second position of the inclined surface using the color component inspector, The method for inspecting the inclined surface of the electronic component according to claim 1, wherein the blue component and the red light extracted independently from each other at the same time are synthesized using the color component inspection unit to determine the quality of the inclined surface of the inspected object. The method of claim 1, In the case of using the color component inspection unit, The first position and the second position are used to obtain image information on the inspection object, including the inspection object located on the inspection object and reflected by the white light irradiated to the first position and the second position using image acquisition means. Acquire them in order of position, The blue light is extracted from the white light reflected at the first position from the sequentially acquired image information by receiving the sequentially acquired image information using color component extraction means electrically connected to the image acquisition means, and the second Extract the red light from the white light reflected at the position, Receiving information about the blue light and the red light extracted from the color component extraction means using the color component synthesizing means electrically connected to the color component extracting means to synthesize the blue light and the red light, and The blue light and red light from both ends of the electronic component are received according to an arrangement pattern by receiving the synthesized blue light and red light in the form of an electrical signal by using a discrimination means electrically connected to the color component synthesizing means. Determine the adequacy for the inclined surface of And storing the ratio of the quality of the object to be inspected and the defect of the object to be received by receiving a result of the quality of the inclined surface of the object to be inspected using a storage means electrically connected to the discriminating means. Method for inspecting the inclined surface for the inspection object. The method of claim 1, In the case of using the color component inspection unit, The first position and the second position are used to obtain image information on the inspection object, including the inspection object located on the inspection object and reflected by the white light irradiated to the first position and the second position using image acquisition means. Acquire them in order of position, The blue light is extracted from the white light reflected at the first position from the sequentially acquired image information by receiving the sequentially acquired image information using color component extraction means electrically connected to the image acquisition means, and the second Extract the red light from the white light reflected at the position, Receiving information about the blue light and the red light extracted from the color component extraction means using the color component synthesizing means electrically connected to the color component extracting means to synthesize the blue light and the red light, and Receiving the synthesized blue light and red light in the form of an electrical signal by using the discriminating means electrically connected to the color component synthesizing means, sets an overall ratio including both the blue light and the red light, and among the total ratios, the blue light. Or according to the degree of the proportion of the red light occupies the quality of the inclined surface of the inspection object, And storing the ratio of the quality of the object to be inspected and the defect of the object to be received by receiving a result of the quality of the inclined surface of the object to be inspected using a storage means electrically connected to the discriminating means. Method for inspecting the inclined surface for the inspection object. The method of claim 1, In the case of using the color component inspection unit, The first position and the second position are used to obtain image information on the inspection object, including the inspection object located on the inspection object and reflected by the white light irradiated to the first position and the second position using image acquisition means. Acquire them in order of position, The blue light is extracted from the white light reflected at the first position from the sequentially acquired image information by receiving the sequentially acquired image information using color component extraction means electrically connected to the image acquisition means, and the second Extract the red light from the white light reflected at the position, Receiving information about the blue light and the red light extracted from the color component extraction means using the color component synthesizing means electrically connected to the color component extracting means to synthesize the blue light and the red light, and By using the discriminating means electrically connected to the color component synthesizing means, the synthesized blue light and red light are transmitted in the form of an electrical signal, and the predetermined volume information and the blue light and the red light from the synthesized blue light and red light, respectively. By comparing the volume information of each other with respect to the inclined surface of the inspection object, And storing the ratio of the quality of the object to be inspected and the defect of the object to be received by receiving a result of the quality of the inclined surface of the object to be inspected using a storage means electrically connected to the discriminating means. Method for inspecting the inclined surface for the inspection object. The method of claim 4, wherein The volume information, Set an inspection area for the inclined surface, The content of the blue light and the content of the red light are respectively calculated by sequentially selecting the blue light and the red light from all of the blue light and the red light extracted and synthesized in the inspection area. Matching said respectively calculated content rate with the inclination value corresponding to each of the said blue light and a red light, An inclination surface inspection method for an inspection object for an electronic component, characterized by calculating the volume of the inspection object by integrating the inclination value. A seating part on which an inspection object having an inclined surface formed at both ends of the electronic component is seated; First light sources disposed at both sides of the seating part to form a first acute angle with respect to the top surface of the seating part, and irradiating white light to a first position of the inclined surface; A second position of the inclined surface is disposed to form a second acute angle with respect to the upper surface of the seating portion so as to be located above the first light source on both sides of the seating portion, and to cross the path of the white light irradiated to the first position. A second light source for irradiating white light with; A third light source disposed above the seating portion and irradiating white light to an upper surface of the inclined surface to be perpendicular to a bottom surface of the inspection object; And The red light is simultaneously extracted from the white light reflected at the first position of the inclined surface and the white light reflected at the second position of the inclined surface, and the blue light and the red light which are independently extracted simultaneously at each position are synthesized with each other. An inclined surface inspection apparatus for an inspection object for an electronic component, including a color component inspection unit that determines whether or not the inclined surface of the object is inclined. The method of claim 6, The color component inspecting unit is configured to display image information about the inspected object including the inspected object positioned on an upper portion of the inspected object and reflected by the white light emitted to the first and second positions. Image acquiring means for sequentially acquiring sequentially, and blue light from white light electrically connected to the image acquiring means, and received from the sequentially acquired image information and reflected from the sequentially acquired image information at the first position. Color component extraction means for extracting red light from the white light reflected at the second position, and electrically connected to the color component extracting means, and transmitting information about the blue light and the red light extracted from the color component extracting means, respectively; The sum of color components that synthesize the blue light and the red light Means, and electrically connected with the color component synthesizing means, the discriminating means for receiving the synthesized blue light and the red light in the form of an electrical signal to determine whether the inclined surface of the object to be inspected is electrically connected to the discriminating means. And storage means for receiving a result of the quality of the inclined surface of the inspection object to be determined and storing a ratio of the quality of the inspection object and the defect, The discriminating means determines whether the blue light and the red light from both ends of the electronic component are inclined to the inclined surface of the inspection object in accordance with an arrangement pattern, And said discriminating means discriminates the inspection object to be normal when the array pattern forms a sequence of red light followed by blue light. The method of claim 6, The color component inspecting unit is configured to display image information about the inspected object including the inspected object positioned on an upper portion of the inspected object and reflected by the white light emitted to the first and second positions. Image acquiring means for sequentially acquiring sequentially, and blue light from white light electrically connected to the image acquiring means, and received from the sequentially acquired image information and reflected from the sequentially acquired image information at the first position. Color component extraction means for extracting red light from the white light reflected at the second position, and electrically connected to the color component extracting means, and transmitting information about the blue light and the red light extracted from the color component extracting means, respectively; The sum of color components that synthesize the blue light and the red light Means, and electrically connected with the color component synthesizing means, the discriminating means for receiving the synthesized blue light and red light in the form of an electrical signal to determine whether the inclined surface of the object to be inspected is electrically connected to the discriminating means. And storage means for receiving a result of the quality of the inclined surface of the inspection object to be determined and storing a ratio of the quality of the inspection object and the defect, The discriminating means sets the total ratio including both the blue light and the red light, and determines whether the inclined surface of the inspection object is inclined according to the degree of the ratio of the blue light or the red light of the total ratio, And said discriminating means discriminates the inspection object to be normal when the ratio of the blue light is relatively higher than the ratio of the red light. The method of claim 6, The color component inspecting unit is configured to display image information about the inspected object including the inspected object positioned on an upper portion of the inspected object and reflected by the white light emitted to the first and second positions. Image acquiring means for sequentially acquiring sequentially, and blue light from white light electrically connected to the image acquiring means, and received from the sequentially acquired image information and reflected from the sequentially acquired image information at the first position. Color component extraction means for extracting red light from the white light reflected at the second position, and electrically connected to the color component extracting means, and transmitting information about the blue light and the red light extracted from the color component extracting means, respectively; The sum of color components that synthesize the blue light and the red light Means, and electrically connected with the color component synthesizing means, the discriminating means for receiving the synthesized blue light and red light in the form of an electrical signal to determine whether the inclined surface of the object to be inspected is electrically connected to the discriminating means. And storage means for receiving a result of the quality of the inclined surface of the inspection object to be determined and storing a ratio of the quality of the inspection object and the defect, The discriminating means compares the volume information of each of the blue light and the red light with each other from the predetermined reference volume information and the synthesized blue light and red light to determine whether the inclined surface of the inspection object is inclined. Inclined surface inspection device for inspection objects. The method of claim 9, The volume information, Set an inspection area for the inclined surface, The content of the blue light and the content of the red light are respectively calculated by sequentially selecting the blue light and the red light from all of the blue light and the red light extracted and synthesized in the inspection area. Matching said respectively calculated content rate with the inclination value corresponding to each of the said blue light and a red light, An inclination surface inspection apparatus for an inspection object for an electronic component, characterized by calculating the volume of the inspection object by integrating the inclination value. delete delete delete delete delete delete

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