JP2003294809A - Electronic component inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic component inspection device which surely detects error in taking-out/taking-in of an electronic component. <P>SOLUTION: A placing table 10 is reciprocated by a drive means along a path, and carries an electronic component from a supply part to a collection part through an inspection part. An electronic component is carried to and placed on the placing table 10, and a holding part 9 is used as a supply means or a collection means to take out the electronic component from the placing table 10. The upper surface of the placing table 10 is provided with a recessed part 11 opened and a pair of grooves 12 and 13 formed, to face each other, at two positions sandwiching a component 1 in the recessed part 11. A light projecting element 14 and a light receiving element 15 are provided at an inlet and an outlet of both grooves. The light for detecting a component comes out of the groove 12 to enter the recessed part 11, and reaches the light receiving element 15 through the groove 13. So such phenomenon as the light from the light projecting element 14 detours around the electronic component 1 for malfunction is difficult to occur. The light path is surely shut off by presence of the electronic component 1, and the presence of the electronic component 1 is accurately detected. So, an error in carrying out/carrying in of the component 1 by the holding part 9 is surely detected. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys an electronic component by a supplying means to a conveying means, conveys the electronic component by the conveying means, inspects by an inspecting means, and further conveys the electronic component by the conveying means. The present invention relates to an electronic component inspection device that carries out the electronic component from the carrying means by a collecting means later. In particular, the present invention is capable of accurately detecting the presence or absence of an electronic component in such an electronic component inspection device when the supplying device carries the electronic component to the conveying device and when the collecting device takes out the electronic component from the conveying device. The present invention relates to an invention capable of reliably detecting whether or not there is a mistake in handling an electronic component, and thus stabilizing the inspection work of the electronic component and improving work efficiency.

[0002]

2. Description of the Related Art An inspection apparatus that automates the transportation and inspection of components is used for inspection and calibration of electronic components. A general electronic component inspection device has an electronic component supply unit that stocks uninspected electronic components, an inspection unit that inspects electronic components, and an electronic component recovery unit that stocks measured electronic components. ing. Conveying means is provided between the respective units, and the conveying unit has a movable mounting table on which electronic parts can be placed and transferred between the respective units. Further, there are provided a supply unit that takes out the electronic component from the collecting unit and supplies the electronic component to the mounting table of the conveying unit, and a collecting unit that takes out the electronic component from the mounting table of the conveying unit and collects it in the collecting unit. .

According to such an inspection apparatus, the supply means takes out an uninspected electronic component from the supply section and places it on the mounting table of the transfer means, and the transfer means moves the mounting table and sends the electronic component to the inspection section. The inspection unit inspects this electronic component. The inspected electronic component is conveyed to the collecting section by the conveying means, then taken out by the collecting means and collected in the collecting section.

According to the above conventional electronic component inspection apparatus, the operation of taking out or carrying the electronic component is performed at least at both ends of the carrying means. That is, the electronic components are taken out and carried in between the supply unit and one end of the carrying unit and between the other end of the carrying unit and the collecting unit. Such an electronic component operation is apt to cause a mistake because the electronic component is minute, and if a mistake is overlooked and a process progresses, it is necessary to wait for the process of another process to recover the mistake later. However, there arises a problem that efficient processing cannot be performed.

Therefore, a sensor is provided for detecting whether the operation of taking out the electronic component from the carrying means or the operation of bringing the electronic part into the carrying means, that is, the delivery operation of the electronic part to the carrying means is performed without error. There is. FIG. 4 shows a carrier 400 on which the electronic component 1 is placed and moves in the carrier means. Carrier 40
Reference numeral 0 denotes a block body connected to a drive means (not shown) of the transport means, and the electronic component 1 can be placed on a flat mount portion on the upper surface of the block body to reciprocate along a predetermined path. In order to detect that the electronic component 1 is placed on the placing portion of the carrier 400 (or the placed electronic component 1 is no longer taken out), the light projecting element 401 and the light receiving element 402 are Was used. The light projecting element 401 and the light receiving element 402 are arranged facing each other at two positions sandwiching the electronic component 1 on the mounting portion of the carrier 400, and detect that the light path is blocked by the electronic component 1. The presence or absence of the electronic component 1 is detected.

[0006]

[Problems to be Solved by the Invention] However, in this way,
Simply arranging the light projecting element 401 and the light receiving element 402 to face each other at two positions sandwiching the electronic component 1 does not necessarily ensure that the light path is blocked by the electronic component 1.
The light from the light projecting element 401 may diffuse and go around the electronic component 1 so as to bypass the electronic component 1 and reach the light receiving element 402. Therefore, it may not be possible to accurately detect the presence or absence of the electronic component 1. It was

In order to avoid such inconvenience, the light projecting element 4
It is also possible to provide a slit in both or one of 01 and the light receiving element 402 to narrow the width of the projected light to prevent diffusion. However, it is difficult to accurately align the optical axes of both the light emitting element and the light receiving element provided with slits so that they can be detected. Further, when a slit is provided in the light projecting and light receiving element, the effect cannot be obtained unless the slit is thinner than the light emitting surface of the element. The light emitting surface of the element is very small, and the slit has to be made thinner than that, so that the decrease in the amount of light cannot be ignored and it is necessary to increase the light emission brightness of the light projecting element itself.

The present invention provides an electronic component inspection device capable of surely detecting whether or not there is an error in taking out / carrying in an electronic component by the supplying means or the collecting means in the conveying means. It is an object.

[0009]

An electronic component inspection apparatus according to a first aspect of the present invention includes a supply unit 6 for supplying an electronic component 1 from a supply unit 2 and a recovery unit for recovering the electronic component 1 to a recovery unit 3. 8 and an inspection means 7 for inspecting the electronic component 1,
An electronic component inspection device is provided with a transporting unit 4 that transports the electronic component 1 between the supply unit 2 and the recovery unit 3 via the inspection unit 7, and has the following features. . That is, the carrying means includes a mounting table 10 having a mounting portion 11 on which the electronic component 1 is mounted, a light projecting element 14 provided on one end side of the mounting table 10, and the other end of the mounting table 10. The light receiving element 15 provided on the side, and the light projecting element 14 and the light receiving element 1 which are provided so as to traverse the placing portion 11 described above.
It is characterized in that it is possible to accurately detect the presence / absence of the electronic component 1 mounted on the mounting table 10 by providing the optical transmission paths 12 and 13 that pass the optical axis 5 of FIG.

According to a second aspect of the present invention, there is provided an electronic component inspection apparatus according to the first aspect, wherein the mounting portion is a recess 11 and the light passage path is the mounting table 1.
It is characterized by the through grooves 12 and 13 formed in 0.

According to a third aspect of the present invention, in the electronic component inspection apparatus according to the second aspect, the groove width dimension of the through grooves 12, 13 is smaller than the entire length of the electronic component 1. It has a feature.

According to a fourth aspect of the present invention, there is provided an electronic component inspection apparatus according to the first aspect, wherein the mounting portion is a recess 11 and the light passage path is a penetrating hole formed in the mounting table. It is characterized by being a hole.

[0013]

1 is a plan view schematically showing the overall structure of an example of an embodiment of the present invention;
It will be described with reference to FIG. Figure 1
As shown in FIG.
The inspection means 7 is located approximately in the middle of the transport means 4, and the inspection section 5 is located near the center of the inspection means 7. Further, a supply means 6 for supplying electronic components is provided between the supply section 2 and one end of the transfer means 4, and a recovery means 8 for electronic parts is provided between the other end of the transfer means 4 and the recovery section 3. It is provided.

Although not shown in detail, the conveying means 4 of this example has a mounting table 10 as shown in FIG. The mounting table 10 has a recess 11 as a mounting portion that is open on the upper surface. The electronic component 1 is placed in the recess 11. The mounting table 10 can be moved back and forth along a predetermined transport path by a driving unit (not shown). On the upper surface of the mounting table 10, at two positions sandwiching the electronic component 1 mounted in the recess 11,
Grooves 12, 13 as a pair of light passage paths facing each other
Is provided. A light projecting element 14 is provided on the entrance side of one groove 12, and a light receiving element 15 is provided on the exit side of the other groove 13.

When the electronic component 1 is in the concave portion 11, the light emitted from the light projecting element 14 is blocked by the electronic component 1 in the concave portion 11 after passing through the one groove 12, so that the light receiving element 1
I can't reach 5. When the electronic component 1 is not in the recess 11, light emitted from the light projecting element 14 reaches the light receiving element 15 through one groove 12, the recess 11 and the other groove 13. Therefore, it is possible to determine whether or not the electronic component 1 is present in the concave portion 11 based on the signal output by the light receiving element 15 depending on the presence or absence of light reception.

Grooves 12 and 13 as light passage paths are provided on both sides of the recess 11 so as to sandwich the electronic component 1, and the grooves 12 and 13 are provided.
According to the configuration of the present example in which the light projecting / receiving elements 14 and 15 are arranged through the light, the light exits the groove 12 and enters the recess 11, and
Since the light from the light projecting element 14 reaches the light receiving element 15 via 3, the phenomenon in which light from the light projecting element 14 diffuses and goes around the electronic component 1 in a detoured manner is unlikely to occur. That is, the presence of the electronic component 1 reliably blocks the light path, and the presence or absence of the electronic component 1 can be accurately detected. Therefore, the supplying means 6 carries the electronic component into the recess 11 or the collecting means 8
Thus, it is possible to reliably detect whether or not there is a mistake in taking out the electronic component 1 from the recess 11.

An uninspected electronic component is taken out from the mounting table 10 of the conveying means 4 and carried to the inspection section 5, and an inspected electronic component is carried out of the inspection section 5 and conveyed to the conveying means 4.
The inspection means 7 is mounted on the mounting table 10. As shown in FIG. 1, this inspection means 7 has a disc 20 which is a positioning device as a moving means, and a plurality of holding portions 9 provided on the disc 20. The disc 20 is rotatable, and the disc 20 is provided with a holding portion 9 facing downward, and each holding portion 9 is movable in the vertical direction with respect to the disc 20.

Therefore, the transport means 4 on which the electronic component 1 is placed
The mounting table 10 is positioned at a predetermined position substantially in the middle of the transport means 4, and the holding part 9 is lowered to the position to move the electronic component 1
Hold, then raise and rotate the disk 20,
The electronic component 1 can be taken out and carried to the inspection unit 5 described later. Further, the electronic component 1 inspected by the inspecting unit 5 described later is held by the holding unit 9, is positioned again at the predetermined position by the rotation of the disc 20, and is directed into the recess 11 of the mounting table 10 without the electronic component 1. If the electronic component 1 is lowered and placed on the mounting table 10, the inspected electronic component 1 can be carried into the mounting table 10.

The collecting means 8 for taking out the inspected electronic component 1 from the other end of the carrying means 4 and carrying it to the collecting section 3 has the same construction as the supplying means 6. In addition, each component of the present apparatus is connected to the control means and is controlled as a whole as a whole.

The effects of the above configuration will be described. The supply unit 6 takes out the uninspected electronic component 1 from the supply unit 2 and carries it into the recess 11 of the mounting table 10 set at the start end of the transport unit 4. The mounting table 10 moves and is positioned at the take-out position by the inspection means 7. The holding unit 9 of the inspection means 7 takes out the electronic component 1 from the recess 11 of the mounting table 10 and carries the electronic component 1 into the inspection unit 5 by rotating the disc 20. The inspection unit 5 inspects the electronic component 1. After the inspection, the disk 20 rotates with the holding part 9 holding the electronic component 1, the electronic component 1 is positioned above the take-out position, and then descends to hold the electronic component 1 in the concave portion of the mounting table 10. Bring it in 11. The transport means 4 operates and the mounting table 10 moves to the end. The collecting means 8 takes out the electronic component 1 from the concave portion 11 of the mounting table 10 and carries it into the collecting portion 3.

In the above operation, the concave portion 1 of the mounting table 10
The work of taking out the electronic component 1 inside the recess 1 from the recess 11;
The work of carrying the electronic component 1 into the recess 11 is performed by the supply unit 6, the collection unit 8, and the holding unit 9 of the inspection unit 7. Whether or not the work of handling the electronic component is performed correctly. The determination can be accurately made by the control means based on the signal from the light receiving element 15 provided on the mounting table 10.

That is, when the electronic component 1 is in the concave portion 11, the light from the light projecting element 14 is blocked by the electronic component 1 in the concave portion 11 after passing through the one groove 12, so that the light receiving element 15 receives the light. Does not reach, and the light receiving element 15 does not output a light receiving signal. Therefore, when the light receiving element 15 does not output the light receiving signal after a predetermined elapsed time at the time of taking out, it is understood that the electronic component 1 has not been taken out and the taking out has failed.

When the electronic component 1 is not in the recess 11, the light emitted from the light projecting element 14 passes through the groove 12, the recess 11 and the other groove 13 to reach the light receiving element 15. The light receiving element 15 outputs a light receiving signal. Therefore, if the light-receiving element 15 outputs the light-reception signal after a predetermined elapsed time at the time of carrying in, it can be seen that the electronic component 1 is not carried in the normal state and the carrying-in has failed.

As described above, it is possible to accurately determine whether or not the electronic component 1 is present in the concave portion 11 based on the presence or absence of the light receiving signal of the light receiving element 15. In this example, the supply means 6
Carries the uninspected electronic component 1 to the mounting table 10, a second stage in which the holding unit 9 of the inspection means 7 takes out the uninspected electronic component 1 from the mounting table 10, and the holding unit 9 of the inspection unit 7.
The third stage of carrying the inspected electronic component 1 to the mounting table 10, and the collecting means 8 mounting the inspected electronic component 1 on the mounting table 10.
In the four stages of the fourth stage of taking out from the mounting table 1,
Delivery of the electronic component 1 between 0 and the supply means 6, 7, 8 is accurately judged by the light projecting element 14 and the light receiving element 15.

In this example, in the first stage and the third stage,
After the supply unit 6 and the holding unit 9 of the inspection unit 7 carry the electronic component 1 into the recess 11, and after a predetermined short time after the holding unit 9 of the supply unit 6 and the inspection unit 7 moves upward, Check the received light signal, and if the received light signal is not output, electronic component 1
Is judged to be in the proper state when it was brought in. The light projecting element 14 may emit light only after the above-mentioned predetermined time, or may emit light continuously.

In the second step and the fourth step, the holding part 9 and the collecting means 8 of the inspecting means 7 take out the electronic component 1 from the inside of the recess 11 and then the holding part 9 and the collecting means 8 of the inspecting means 7 are operated. The light receiving signal of the light receiving element 15 is confirmed after a predetermined short time after the temperature rises, and if there is an output of the light receiving signal, it is determined that the electronic component 1 is taken out in a normal state. The light emission timing of the light projecting element 14 is the same as in the first and third stages.

Further, in the present example, the grooves 12 and 13 provided on both sides of the recess 11 have a length in the optical axis direction, and therefore have an effect of preventing light diffusion to the vicinity of the electronic component 1.
Therefore, since the width of the groove can be made wider than the width of the slit, the decrease in the amount of light can be reduced, and the brightness of the light emitting element need not be increased as compared with the case of using the slit. Therefore, it is not necessary to employ a light emitting element with high brightness.

In the example described above, the light passage path formed on the mounting table 10 is the groove 12 opened on the upper surface of the mounting table 10.
However, it may be a through hole formed by penetrating the wall of the mounting table 10 so as to communicate the inside and the outside of the recess 11.

As described above, in the apparatus of this example, the electronic component 1 is held by the plurality of holding portions 9 provided on the disc 20.
While the electronic component 1 is sequentially supplied to the inspection unit 5 by the rotation of the disc 20, the conveyance unit 4 is freely operated independently from the inspection unit 5 side during the period, so that the inspection unit 5 waits for components. It is so arranged that the inspection unit 5 is maximized in its ability. In such an operating state, the delivery of the component to and from the transporting means 4 fails, and if the user does not notice it, the holder 9 that does not hold the component may reach the inspection unit 5 and notice the malfunction. In that case, the entire device is returned to the initial state and the inspection unit 5
It took a certain amount of time to reach the operating state in which the ability of was maximized, and the efficiency was poor. However, according to this example, the supply means 6 and the inspection means 7 that cause such inconvenience
Failure to deliver parts by the holding unit 9 and the recovery means 8 can be detected promptly and surely, and measures to deal with such inconvenience can be taken promptly, so that the loss time is shortened and the efficiency of the entire inspection work is reduced. There is an effect that there is little.

Next, a second example of the embodiment of the present invention will be described with reference to FIG. In this example, the transport means 4
On the mounting table 10 ', a divided optical path 31 as a light passage path formed by a plurality of wall members 30 is formed. That is, a flat portion in the center of the upper surface of the mounting table 10 ′ was used as a mounting portion for the electronic component, and a pair of wall members 30 was provided on each side of the light projecting element 14 and the light receiving element 15 to form the partitioning optical path 31.

According to the second example, the light emitted from the light projecting element 14 exits from one of the divided light paths 31 and enters the mounting portion, and reaches the light receiving element 15 via the other of the divided light paths 31. The phenomenon in which the light from the optical element 14 diffuses and wraps around the electronic component 1 in a detoured manner is unlikely to occur, and it is unlikely that the light will reach the light receiving element 15 even though the electronic component 1 is present.
Therefore, similarly to the first example, the presence or absence of the electronic component 1 can be accurately detected, and whether or not there is a mistake in taking out the electronic component 1 from the mounting portion can be reliably detected.

[0032]

According to the present invention, in an electronic component inspection device for transporting an electronic component between the supply unit and the recovery unit via the inspection unit by the transport unit, an electronic device is mounted on the mounting table of the transport unit. Since the mounting portion for accommodating the components is formed and the optical path of the light projecting / receiving element is provided in the light passage path that traverses the mounting portion, the following effects can be obtained. That is, since the light exits from the light passage path and enters the mounting portion and reaches the light receiving element via the light passage path, it is unlikely that the light from the light projecting element diffuses and goes around the electronic component. Therefore, it is unlikely that light will reach the light receiving element despite the presence of the electronic component, and the presence of the electronic component reliably blocks the light path. Therefore, it is possible to accurately detect the presence or absence of the electronic component, and it is possible to reliably detect whether or not there is a mistake when the electronic component is taken out and carried in by the taking-out means.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an electronic component inspection device that is an example of an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing an essential part of the electronic component inspection device which is the first example of the embodiment of the present invention.

FIG. 3 is a perspective view showing an enlarged main part of an electronic component inspection device which is a second example of the embodiment of the present invention.

FIG. 4 is a plan view schematically showing a configuration of a mounting table in a conventional electronic component measuring device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electronic component, 2 ... Supply part, 3 ... Collection part, 4 ... Conveying means, 5 ... Inspection part, 6 ... Supplying means, 7 ... Inspection means, 8 ... Collection means, 9 ... Holding part, 10 ... Mounting table, 11 ... Recesses as mounting portions, 12, 13 ... Grooves as light passage paths, 14 ...
Light-projecting element, 15 ... Light-receiving element, 20 ... Disk as positioning device, 30 ... Wall member, 31 ... Sectional optical path as light passage path.

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[Procedure amendment]

[Submission date] October 24, 2002 (2002.10.
24)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

[0032]

According to the present invention, in an electronic component inspection device for transporting an electronic component between the supply unit and the recovery unit via the inspection unit by the transport unit, an electronic device is mounted on the mounting table of the transport unit. Since the mounting portion for accommodating the components is formed and the optical axis of the light projecting / receiving element is provided in the light passage path that traverses the mounting portion, the following effects can be obtained. That is,
Since the light exits from the light passage path and enters the mounting portion and reaches the light receiving element via the light passage path, it is unlikely that the light from the light projecting element diffuses and goes around the electronic component. Therefore, it is unlikely that light will reach the light receiving element despite the presence of the electronic component, and the presence of the electronic component reliably blocks the light path. Therefore, it is possible to accurately detect the presence or absence of the electronic component, and it is possible to reliably detect whether or not there is a mistake when the electronic component is taken out and carried in by the taking-out means.

Continued front page    F-term (reference) 2G003 AA00 AA07 AG11 AG18                 2G036 AA28 BB00 BB09 CA03 CA06                 2G132 AA00 AE01 AE02 AL01

Claims (4)

[Claims] 1. A supply unit (6) for supplying an electronic component from a supply unit, a recovery unit (8) for recovering the electronic component to a recovery unit, an inspection unit (7) for inspecting the electronic component, In an electronic component inspection device, comprising: a transport unit (4) for transporting an electronic component between the supply unit and the recovery unit via the inspection unit, the transport unit mounts the electronic component. A mounting table (10) having a mounting part (11), a light projecting element (14) provided on one end side of the mounting table, and a light receiving element (15) disposed on the other end side of the mounting table. , A light passage path (12, which is provided so as to cross the mounting portion and passes through the optical axes of the light projecting element and the light receiving element).
13), and an electronic component inspection apparatus characterized by being able to accurately detect the presence or absence of an electronic component placed on the mounting table. 2. The electronic component inspection apparatus according to claim 1, wherein the mounting portion (11) is a concave portion, and the light passage paths (12, 13) are through grooves formed in the mounting table. 3. The electronic component inspection apparatus according to claim 2, wherein the groove width dimension of the through groove is smaller than the entire length of the electronic component (1). 4. The electronic component inspection apparatus according to claim 1, wherein the mounting portion (11) is a concave portion, and the light passage paths (12, 13) are through holes formed in the mounting table.