JPH08222899A - Device for inspecting mounted state of parts - Google Patents

Abstract

PURPOSE: To provide a device for inspecting a mounted state of parts with which parts inserted into a substrate can be easily inspected without using a special member, such as the mark sheet, etc. CONSTITUTION: A movable body 32 in an X-Y table is moved to a prescribed position under the control of a computer 4 to which the NC program for insertion of an automatic inserting machine is inputted and the picture of a parts inserting point on a printed wiring board 1 mounted on a top panel 20 is picked up with a camera 40 held on the movable body 32. The picked-up picture is displayed on a display 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting state inspection device for confirming and correcting a component inserted in a board.

[0002]

2. Description of the Related Art NC (Numerical Controller)
In recent years when the ol) technology has been developed, it is often the case that an NC program is used to control an automatic insertion machine to automatically insert a component into a printed wiring board. In the printed wiring board in which the components are automatically inserted in this manner, the insertion state of the components, the clinching state of the component leads, and the cutting state of the component leads are inspected from the viewpoint of quality control.

Conventionally, this type of inspection has been performed as shown in FIG. In FIG. 5A, reference numeral 1 is a printed wiring board 1, and a component 2 is inserted into the printed wiring board 1 by an automatic inserter (not shown) controlled by an NC program. Inspection of this printed wiring board 1
It is performed by covering the printed wiring board 1 with a mask sheet 100 made of paper, plastic, acrylic or the like. That is, the hole 1 having a shape corresponding to the size of the component 2 is provided at a location corresponding to the insertion location of the component 2 on the printed wiring board 1.
The mask sheet 100 in which 01 is punched is prepared in advance. Then, at the time of the inspection, as shown in FIG.
The mask sheet 100 is covered so as to match the printed wiring board 1. Then, the insertion state of the component 2, the clinching state of the lead of the component 2, and the cutting state of the lead of the component 2 are inspected by visually checking the presence or absence of the component 2 in the hole 101 and visually inspecting the component 2 visible in the hole 101. Was.

[0004]

However, in the above-described inspection technique, the hole 101 having a shape corresponding to the size of the component 2 is formed at a position corresponding to the insertion position of the component 2 of the printed wiring board 1.
It is necessary to manufacture the mask sheet 100 having the punched holes, and also to manufacture various mask sheets 100 for each different NC program. Therefore, the material cost of the mask sheet 100 is required, and
Since a special process for manufacturing the mask sheet 100 has to be provided, there is a problem that the cost is high in the inspection operation.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to easily inspect a component inserted in a substrate without making a special member such as a mask sheet. The purpose is to provide a condition inspection device.

[0006]

In order to solve the above-mentioned problems, the component attachment state inspection device according to the invention of claim 1 is
The NC program has an attachment mechanism for attaching a board in which a component is inserted by an automatic insertion machine whose attachment is controlled by an NC program, and a photographing body for photographing the component attachment portion of the board attached to this attachment mechanism. A moving body moving means, a control means for controlling the moving body moving means based on the NC program, and a display means for displaying an image taken by the moving body. It was configured.

According to a second aspect of the present invention, in the component attachment state inspection device according to the first aspect, the attachment mechanism of the photographing body moving means is formed of a pair of support rails attached to a transparent plate and having adjustable intervals. Then, a portion of the photographing body moving means for moving the photographing body is disposed on the opposite side of the transparent plate with respect to the pair of support rails, and a movable body holding the photographing body is arranged along the substrate surface. The configuration is formed by an XY table to be moved.

[0008]

According to the first aspect of the present invention, the board on which the components are inserted by the automatic inserter controlled by the NC program is attached to the attachment mechanism of the moving body moving means, and the control means is activated. Then, the control means controls the moving body moving means. As a result, the photographing body of the photographing body moving means moves to the component mounting portion of the board and photographs the component mounting portion. Then, the image of the component mounting portion photographed by the photographing body is displayed by the display means.

According to the second aspect of the invention, the mounting mechanism and the X
-Since it is separated from the Y table by the transparent plate, it is possible to prevent the inspection operator from being caught by the movable body when the substrate is attached to the attachment mechanism. further,
It is possible to prevent dust and dirt from adhering to the shooting body.
In addition, since the mounting mechanism is formed by a pair of support rails whose distance can be adjusted, substrates of various sizes can be mounted.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing a component mounting state inspection device according to an embodiment of the present invention, and FIG.
-Y is a perspective view showing the external appearance of the table, and FIG.
FIG. 4 is a perspective view showing the inside of the table, and FIG. 4 is a sectional view taken along the line AA in FIG. The same members as those shown in FIG. 5 will be described with the same reference numerals.

As shown in FIG. 1, the component mounting state inspection apparatus of this embodiment comprises a pair of support rails 21 and 22 (mounting mechanism) and an XY table 3 as a moving body moving means.
It is composed of a computer 4 as a control means, a display 5 as a display means, and a keyboard 6.

Support rails 21, 22 and XY table 3
Are separated from each other by a top panel 20 (transparent plate). As shown in FIG. 2, the top panel 20 is a transparent rectangular plate made of acrylic, tempered glass, or the like, and is placed on the pedestals 31 at the four corners of the upper surface of the XY table 3. Support rails 21 and 22 are attached to the center of the top panel 20 so as to be slidable in the arrow B direction. This support rail 2
Reference numerals 1 and 22 are for fixing the printed wiring board 1 in which the components are inserted by an automatic inserter (not shown) controlled by the NC program. Specifically, the support rail 2
As shown in FIG. 4, 1 and 22 are elongated bodies having an L-shaped cross section, and are arranged in parallel so as to face each other. Each support rail 21 (22) is fixed to the head of a bolt 21a (22a) slidably fitted in a long hole 20a (20b) elongated in the arrow B direction. Accordingly, by moving the bolts 21a and 22a along the long holes 20a and 20b, the distance L between the support rails 21 and 22 can be reduced.
The nuts 21b and 22b after adjustment.
The support rails 21 and 22 can be positioned by tightening.

On the other hand, the XY table 3 is a device for moving the movable body 32 in the X and Y directions indicated by arrows, as shown in FIG. Specifically, the XY table 3 has a frame 33 having the same shape as the top panel 20. And
Rails 34 are attached to both side portions 33a of the frame body 33 and can slide in the arrow X direction. In addition, the rail 35 is provided on both sides 33b.
Is attached so that the rail 35 can slide in the arrow Y direction. These rails 34, 35
Is inserted in the movable body 32. Then, on the outer side of the frame 33, an X for driving the rail 34 in the direction of the arrow X is provided.
A drive unit 36 and a Y drive unit 37 for driving the rail 35 in the arrow Y direction are attached. As a result, the movable body 32 is driven by the driving of the X drive unit 36 and the Y drive unit 37.
Moves in the X and Y directions. A camera 40 (imaging body) with the lens portion 41 facing upward is fixed to the movable body 32, and the camera 40 moves integrally with the movable body 32.

In FIG. 1, a computer 4 is a control device for controlling the XY table 3 and the display 5 in response to a command from a keyboard 6, and is an NC for inserting the automatic inserting machine.
The program is entered as is. The input of this NC program is floppy disk, hard disk,
It is performed on a LAN or the like. That is, computer 4
Controls the X drive unit 36 and the Y drive unit 37 based on the NC program for insertion of the automatic insertion machine to move the movable body 32.
Has a function of displaying an image taken by the camera 40 on the display 5 by moving the to a predetermined position.

Next, an example of inspection work by the component attachment state inspection device of this embodiment will be described. As shown in FIG. 1, the printed wiring board 1 into which the components have been inserted by the above-mentioned automatic insertion machine is placed on the support rails 21 and 22, and then, as shown in FIG.
As shown in, the support rails 21 and 22 are moved in the direction sandwiching the printed wiring board 1. And the support rails 21,
When the printed wiring board 1 is clamped from both sides, the nuts 21b and 22b are attached to the bolts 21a and 22.
The printed wiring board 1 is fixed by tightening it to a. Then, the computer 4 to which the NC program for insertion of the automatic insertion machine is directly input is started. The data of the NC program for insertion of the automatic insertion machine is printed wiring board 1
The coordinate data of the insertion location of the part is included. Therefore, the inspection operator operates the keyboard 6 to cause the computer 4 to move the camera 40 to the XY coordinates corresponding to the preset component insertion position (component mounting portion) on the printed wiring board 1. When the command is given, the computer 4 controls the XY table 3 based on the NC program.

That is, the computer 4 controls the driving of the X drive unit 36 and the Y drive unit 37 of the XY table 3, and the X drive unit 36 moves the rail 34 to the X of the above-mentioned component insertion position.
Then, the Y drive unit 37 moves the rail 35 to the Y coordinate of the component insertion position. As a result, the movable body 32 moves to the XY coordinates, which is the above-mentioned component insertion position, and the camera 40 is positioned almost directly below the component insertion position.

In this state, when the keyboard 6 is operated to operate the camera 40, the camera 40 catches the part insertion part of the printed wiring board 1 through the top panel 20 and takes a close-up view of the part. Then, the image projected by the camera 40 is projected on the screen 50 of the display 5 under the control of the computer 4. In this way, the status of the specified component insertion location is displayed on the screen 50.
The inspection operator can check the presence or absence of the component at the designated component insertion position, the clinch state of the component lead, and the like on the projected image, and perform correction work as necessary. Such an operation is performed for all of the preset component insertion points, the component insertion state of each point is confirmed and corrected each time, and the inspection work is completed.

As described above, according to the component attachment state inspection apparatus of this embodiment, the state of each component insertion portion of the printed wiring board 1 is displayed on the display 5 by using the NC program for insertion of the automatic insertion machine. Therefore, without making and using the mask sheet 100 or the like shown in FIG.
The components of the printed wiring board 1 can be easily inspected, and as a result, the productivity and quality of the printed wiring board 1 can be improved.

Further, since the support rails 21 and 22 for mounting the printed wiring board 1 and the movable body 32 are separated by the top panel 20, when the printed wiring board 1 is mounted, the inspection operator moves the movable body 32. There is no accident of getting your hands caught in your hands and it is very safe. Furthermore, the lens portion 41 of the camera 40 is free from dust and dirt, and a clear image is always displayed on the display 5.
Can be projected on. Also, the bolts 21a and 22a
Since the space L between the support rails 21 and 22 can be adjusted by moving the rails along the long holes 20a and 20b, the printed wiring boards 1 of various sizes can be mounted on the XY table 3. it can.

[0020]

As described above in detail, according to the invention of claim 1, the state of each component mounting portion of the board can be displayed on the display means by using the NC program for insertion of the automatic insertion machine. Therefore, the mask sheet 100 shown in FIG.
It is possible to easily inspect the components of the board without producing and using the above, and as a result, it is possible to improve the productivity and the quality of the board.

According to the second aspect of the present invention, the mounting mechanism and the movable body are separated by the transparent plate, and it is possible to prevent a situation in which the inspection operator is caught in the movable body when mounting the substrate. Therefore, there is an effect that a device having excellent safety can be provided. Furthermore, since it is possible to prevent dust and dirt from adhering to the photographing body, it is possible to always display a clear image on the display means. In addition, since the substrates of various sizes can be mounted by adjusting the distance between the pair of support rails as the mounting mechanism, it is possible to provide a device having excellent versatility.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a component attachment state inspection device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an external appearance of an XY table applied to the apparatus of FIG.

3 is a perspective view showing the inside of the XY table of FIG. 2. FIG.

4 is a sectional view taken along the line AA of FIG.

5A and 5B are perspective views showing a conventional printed wiring board inspection technique, wherein FIG. 5A shows a structure of a printed wiring board and a mask sheet, and FIG. 5B shows a mask sheet on the printed wiring board. Shows the state of covering.

[Explanation of symbols]

 1 Printed Wiring Board 3 XY Table 4 Computer 5 Display 20 Top Panel 21, 22 Support Rail 32 Movable Body 40 Camera

Claims (2)

[Claims] 1. A component mounting part of a substrate mounted on this mounting mechanism, comprising a substrate on which a component is inserted by an automatic insertion machine whose component mounting is controlled by an NC program, and a mounting mechanism for mounting the substrate. A moving body moving means for moving the moving body for shooting the image, a control means for controlling the moving body moving means based on the NC program, and an image taken by the moving body are displayed. And a display means for doing so, and a mounting state inspection device for parts, comprising: 2. The component attachment state inspection device according to claim 1, wherein the attachment mechanism of the image capturing body moving means is formed of a pair of support rails that are attached to a transparent plate and have adjustable intervals. A portion of the moving means for moving the photographing body is arranged on the opposite side of the transparent plate with respect to the pair of support rails, and a movable body holding the photographing body is moved along the substrate surface XY. A mounting condition inspection device for parts, characterized by being formed from a table.