JP2004200296A - System for preventing erroneous mounting of electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an erroneous mounting preventing device that can be post-fitted easily to an electronic component mounting device. <P>SOLUTION: In a system for preventing erroneous mounting of electronic component, the electronic component mounting device 1 has a start switch circuit 5 which controls mounting starting operation and a control circuit 3 which outputs a control signal based on the presence/absence of an electronic component. The erroneous mounting preventing device is constituted of a personal computer 10 and a bar code reader 11 which detects the information on electronic components. The erroneous mounting preventing device has a control unit 13 which outputs a signal indicating whether or not bar code information detected by means of the bar code reader 11 and registered bar code information are coincident with each other by collating both information with each other, an AND circuit 14 which judges the logical coincidence between a control signal outputted from the control circuit 3 and another signal outputted from the control unit 13, and a relay 15 which outputs a drive signal for actuating the start switch circuit 5 based on the judged result of AND circuit 14. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a system for preventing erroneous mounting of electronic components that prevents erroneous mounting of electronic components on a printed circuit board, and more particularly to a system for preventing erroneous mounting of electronic components without being limited by an electronic component mounting device. It relates to a system that can be retrofitted.
[0002]
[Prior art]
The progress of electronic equipment products that are responsible for the IT (Information Technology) revolution, such as various mobile terminal equipment and automobile control equipment, is remarkably progressing and penetrating society. Electronic components such as IC (Integrated Circuit), resistors, capacitors, etc. There is a demand for further miniaturization, higher functionality and higher density mounting, and their shapes, weights and sizes are various. Today, even higher-speed and higher-precision technology is required for the development of a device that forms an electronic circuit by combining these electronic components, that is, an “electronic component mounting device” that mounts electronic components on a printed circuit board. .
[0003]
In the electronic component mounting apparatus, feeders such as a bulk feeder and a tape feeder for holding the electronic components are provided. The electronic components are sequentially mounted from the feeder to the printed circuit board. When used up, the feeder must be refilled with electronic components of the same type as those used up.
[0004]
Therefore, in the related art, various electronic components are managed by barcodes, and each time an electronic component is refilled, the read barcode is compared with a registered barcode to prevent an error in refilling the electronic components. That is, erroneous mounting of an electronic component on a printed circuit board is reliably prevented by employing a barcode collation system (for example, see Patent Document 1).
[0005]
When the barcode is collated, the collation result is transferred to the control device of the electronic component mounting device, and the control device recognizes that the used electronic component and the replenishment electronic component are of the same type. Only then can the electronic component mounting apparatus start the operation of mounting the electronic component on the printed circuit board.
[0006]
[Patent Document 1]
JP-A-10-335888
[Problems to be solved by the invention]
However, conventional electronic component mounting apparatuses do not incorporate such a barcode verification function as a standard specification. Therefore, a barcode verification apparatus including a barcode reader and the like is added separately from the electronic component mounting apparatus. (Afterwards), the collation result of the barcode collation device must be transferred to the control device of the electronic component mounting device. In this case, in order to enable communication between the barcode verification device and the electronic component mounting device, it is necessary to adapt the interface of the added barcode verification device to the electronic component mounting device. Therefore, it is necessary to select a barcode collation device that can conform to the communication standard of the existing electronic component mounting device, which reduces the degree of freedom in selecting the barcode collation device and, in some cases, requires software for adapting the interface. It must be developed anew, and software development can be enormous.
[0008]
It is an object of the present invention to provide a system for preventing erroneous mounting of an electronic component, which can easily be retrofitted with a device for preventing erroneous mounting of an electronic component such as the above-described bar code collating device.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 includes, as shown in FIG. 2, an electronic component mounting apparatus (1) that mounts electronic components classified on the basis of information such as a barcode on a printed circuit board. An electronic component mounting apparatus that includes an electronic component mounting apparatus (a personal computer 10 and a barcode reader 11) that prevents electronic components of a type different from a predetermined type from being mounted on a printed circuit board. An implementation prevention system,
The electronic component mounting apparatus,
A start switch circuit (5) for controlling the mounting start operation;
A control circuit (3) that outputs an H signal or an L signal based on the presence or absence of an electronic component;
Has,
The erroneous mounting prevention device,
Detecting means (bar code reader 11) for detecting information of electronic components;
Collating means (control unit 13) for collating the information detected by the detecting means with the registered information and outputting a signal indicating whether or not each information matches each other;
Based on the H signal or L signal output from the control circuit and the signal output from the matching unit, the electronic component mounting apparatus has an electronic component and the information detected by the detection unit and the registered information Determining means (AND circuit 14) for outputting a determination signal indicating the determination result when it is determined that
A driving unit (relay 15) for outputting a driving signal for operating the start switch circuit based on the determination signal output from the determination unit;
It is characterized by having.
[0010]
According to the first aspect of the invention, between the electronic component mounting apparatus and the erroneous mounting prevention apparatus, transmission of a simple H signal or L signal from the control circuit of the electronic component mounting apparatus to the erroneous mounting prevention apparatus, Only the transmission of the drive signal from the drive means of the device to the start switch circuit of the electronic component mounting apparatus is performed, and no complicated signals are exchanged between the electronic component mounting apparatus and the erroneous mounting prevention apparatus. It has become. Therefore, the erroneous mounting prevention device can be selected almost without being restricted by the communication standard of the electronic component mounting device, and the erroneous mounting prevention device can be easily retrofitted to the existing electronic component mounting device.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated example.
First, a schematic configuration of a system for preventing erroneous mounting of electronic components will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram showing a system for preventing erroneous mounting of electronic components.
[0012]
In the system for preventing erroneous mounting of electronic components shown in FIG. 1, an electronic component mounting apparatus 1 for mounting various electronic components such as ICs, resistors, and capacitors on a printed circuit board is provided. A tape feeder 2 is detachably provided at a predetermined position of the electronic component mounting apparatus 1.
[0013]
A reel 2a is detachably provided on the tape feeder 2. A carrier tape (not shown) containing electronic components is wound around the reel 2a. In the electronic component mounting apparatus 1, the electronic components held by the carrier tape are arranged inside the electronic component mounting apparatus 1. Mounted on a printed circuit board (not shown). The reel 2a is provided with a barcode 2b for identifying the type of the electronic component.
[0014]
A control circuit 3 for controlling the mounting operation of the electronic component mounting apparatus 1 is provided inside the electronic component mounting apparatus 1, and the control circuit 3 operates the electronic component mounting apparatus 1 (whether the mounting operation is being performed or not). ) Is always known. Although not shown in FIG. 1, a sensor 4 (see FIG. 2) for detecting the presence or absence of an electronic component of the tape feeder 2 is provided inside the electronic component mounting apparatus 1. The sensor 4 is connected to the control circuit 3 (see FIG. 2), and the control circuit 3 keeps track of whether or not there is an electronic component in the tape feeder 2 based on a detection signal from the sensor 4.
[0015]
Further, a start switch circuit 5 for controlling the mounting start operation of the electronic component mounting apparatus 1 is provided inside the electronic component mounting apparatus 1. Although not shown in FIG. 1, the start switch circuit 5 is provided with a relay (RY (Relay)) 5a (see FIG. 2). The electronic component mounting apparatus 1 is ready to start the mounting operation when the relay 5a is driven (when the contact of the relay 5a is closed), and performs the mounting operation when the relay 5a is not driven (when the contact of the relay 5a is open). You can't start.
[0016]
An indicator lamp 6 is provided upright on the upper part of the electronic component mounting apparatus 1. The indicator lamp 5 is provided with a display unit 6a indicating whether the electronic component mounting apparatus 1 is performing a mounting operation and a display unit 6b indicating presence / absence of an electronic component of the tape feeder 2. The indicator lamp 6 is connected to the control circuit 3 (see FIG. 2), and the lighting state (lighting or extinguishing) of each of the display units 6a and 6b is switched based on a control signal of the control circuit 3. Therefore, the user can recognize at a glance whether or not the electronic component mounting apparatus 1 is performing the mounting operation or whether or not the tape feeder 2 has the electronic component, based on the lighting state of each of the display portions 6a and 6b of the display lamp 6. You can do it.
[0017]
Further, in the electronic component erroneous mounting prevention system shown in FIG. 1, a personal computer 10 is provided in addition to the electronic component mounting apparatus 1. The personal computer 10 is connected to a bar code reader 11 as a detecting means for detecting a bar code 2b of various reels 2a arranged on the tape feeder 2 and a display 12. In the personal computer 10, the data of the barcode 2 b read by the barcode reader 11 is collated with the registered barcode data, and the collation result is displayed on the display 12. The control circuit 3 and the start switch circuit 5 of the electronic component mounting apparatus 1 are connected to the personal computer 10.
[0018]
In the present embodiment, the erroneous mounting prevention device according to the present invention includes the personal computer 10 and the barcode reader 11.
[0019]
Next, control of the system for preventing erroneous mounting of electronic components shown in FIG. 1 will be described with reference to FIG.
FIG. 2 is a schematic block diagram showing a control configuration of the system for preventing erroneous mounting of electronic components shown in FIG.
[0020]
The personal computer 10 is provided with a control unit 13 as a matching unit having a CPU (Central Processing Unit) 13a, a ROM (Read Only Memory) 13b, and a RAM (Random Access Memory) 13c. The display 12 and the barcode reader 11 are connected to the control unit 13, respectively. The ROM 13b of the control unit 13 stores barcode data corresponding to the type of electronic component, a collation program for collating the barcode, data used for the collation program, and the like.
[0021]
Further, in the personal computer 10, an AND circuit 14 as a determining means and a relay (RY (Relay)) 15 as a driving means are arranged in series. Specifically, the input side of the AND circuit 14 is connected to the CPU 13 a of the control unit 13 and the control circuit 3 of the electronic component mounting apparatus 1, and the output side of the AND circuit 14 is connected to the relay 15. . Then, the relay 15 is connected to the start switch circuit 5 of the electronic component mounting apparatus 1.
[0022]
When an H (High) signal is supplied from the CPU 13a and the control circuit 3 to the AND circuit 14, an H signal is output from the AND circuit 14 and the relay 15 is driven (the contact of the relay 15 is closed). When an L (Low) signal is given to the AND circuit 14 from at least one of the circuits 3, the L signal is output from the AND circuit 14 and the relay 15 is not driven (the contact of the relay 15 is opened). The power supply of the relay 15 is taken from the power supply 7 of the electronic component mounting apparatus 1.
[0023]
Next, a method for preventing erroneous mounting of electronic components using the system for preventing erroneous mounting of electronic components shown in FIG. 1 will be described with reference to FIG.
FIG. 3 is a flowchart showing a processing procedure of the erroneous mounting prevention method.
[0024]
During the mounting operation of the electronic component mounting apparatus 1, a detection signal indicating that an electronic component is present in the tape feeder 2 is output from the sensor 4 to the control circuit 3, and the control circuit 3 has an electronic component based on the detection signal from the sensor 4. The control signal (H signal) to the effect is output to the indicator lamp 6. Thus, the display section 6b of the display lamp 6 is turned off. Further, the relay 15 of the personal computer 10 and the relay 5a of the start switch circuit 5 are each driven (the contacts of the relay 15 and the relay 5a are closed), and the start switch circuit 5 is operating normally (step S1). .
[0025]
In this state, the sensor 4 constantly outputs a detection signal to the control circuit 3, and the control circuit 3 constantly determines the presence or absence of the electronic component of the tape feeder 2 (step S2). When there is an electronic component in the tape feeder 2 (Step S2; YES), the mounting operation is continued in the electronic component mounting apparatus 1.
[0026]
When there is no electronic component in the tape feeder 2 (step S2; NO), that is, when the electronic components on the reel 2a are used up, the sensor 4 outputs a detection signal indicating that there is no electronic component in the tape feeder 2 to the control circuit 3, The control circuit 3 outputs a control signal (L signal) indicating that there is no electronic component to the indicator lamp 6 and the personal computer 10 based on the detection signal from the sensor 4. Thus, the display section 6b of the display lamp 6 is turned on, and the L signal is supplied to the AND circuit 14 of the personal computer 10. At this time, the contact of the relay 15 is opened, the contact of the relay 5a of the start switch circuit 5 is also opened, and the operation of the start switch circuit 5 is stopped (step S3).
[0027]
After that, when the user recognizes that the tape feeder 2 has run out of electronic components by observing the lighting state of the indicator lamp 6, the user removes the tape feeder 2 from the electronic component mounting apparatus 1 and replaces the reel 2a.
[0028]
At this time, the user causes the barcode reader 11 to read the barcode 2b of the refill reel 2a shown in FIG. 1, and causes the personal computer 10 to perform a barcode collation process (step S4). In the personal computer 10, the read data of the bar code 2a is temporarily stored in the RAM 13c of the control unit 13, and the CPU 13a of the control unit 13 reads the registered bar code corresponding to the type of the electronic component according to the collation program of the ROM 13b. A collation process is performed between the code data and the data of the barcode 2a stored in the RAM 13c. Then, the CPU 13a determines whether or not the barcode data corresponding to the out-of-component electronic component matches the data of the barcode 2b of the refill reel 2a (Step S5).
[0029]
If it is determined that the collated barcode data do not match (step S5; NO), the L signal is supplied from the CPU 13a to the AND circuit 14. In this case, the relay 15 of the personal computer 10 and the relay 5a of the start switch circuit 5 are kept open, and the start switch circuit 5 is kept stopped (step S6). At this time, since the relay 5a of the start switch circuit 5 remains open, the electronic component mounting apparatus 1 cannot start the mounting operation, and the user has to perform the collation processing of another refill reel 2a again.
[0030]
On the other hand, if it is determined that the collated barcode data matches each other (step S5; YES), the H signal is supplied from the CPU 13a to the AND circuit 14.
[0031]
At the same time as the above collation processing, the collation result of the bar code data is output from the CPU 13a to the display 12, and the user sees the collation result displayed on the display 12 so that the electronic component held on the reel 2a whose component has run out can be used. It can be recognized whether or not the electronic component held on the refill reel 2a is of the same type.
[0032]
When the user recognizes that the electronic component held on the reel 2a that has used up the components and the electronic component held on the refill reel 2a are of the same type, the refill reel 2a is transferred to the tape feeder 2. Then, the tape feeder 2 is attached to the original predetermined position of the electronic component mounting apparatus 1.
[0033]
Then, the sensor 4 of the electronic component mounting apparatus 1 detects the presence of the electronic component of the tape feeder 2 and outputs a detection signal indicating that the electronic component is present to the control circuit 3. A control signal (H signal) indicating that there is an electronic component is output to the indicator lamp 6 based on the control signal. As a result, the display section 6b of the display lamp 6 is turned off.
[0034]
Further, the control circuit 3 outputs a control signal (H signal) indicating that there is an electronic component to the personal computer 10 based on the detection signal from the sensor 4. As a result, the H signal is supplied to the AND circuit 14 to drive the relay 15 (the contact of the relay 15 is closed). At this time, a drive signal is supplied to the start switch circuit 5 to drive the relay 5a (the contact of the relay 5a is also closed), and the start switch circuit 5 operates normally (step S7). That is, the electronic component mounting apparatus 1 is ready to start the mounting operation.
[0035]
In the system for preventing erroneous mounting of electronic components as described above, when replacing the reel 2a of the tape feeder 2, the control circuit 3 of the electronic component mounting apparatus 1 confirms the presence of the electronic component and registers the registered barcode. Only when the collation result between the data and the bar code data of the replenishment electronic component matches, the relay 5a of the start switch circuit 5 is driven and the electronic component mounting apparatus 1 can start the mounting operation. Such a system prevents erroneous mounting of electronic components on a printed circuit board.
[0036]
Here, in the erroneous mounting prevention system, transmission of a simple control signal (H signal or L signal) from the control circuit 3 of the electronic component mounting apparatus 1 to the personal computer 10 between the electronic component mounting apparatus 1 and the personal computer 10. Only a simple drive signal is transmitted from the relay 15 of the personal computer 10 to the start switch circuit 5 of the electronic component mounting apparatus 1, and a complicated signal is transmitted between the electronic component mounting apparatus 1 and the personal computer 10. No interaction is required. Therefore, it is possible to select an erroneous mounting prevention device such as the personal computer 10 and the barcode reader 11 without being substantially restricted by the communication standard of the electronic component mounting device 1. The prevention device can be easily retrofitted.
[0037]
The present invention is not limited to the above embodiments, and various improvements and design changes may be made without departing from the gist of the present invention.
[0038]
For example, in the present embodiment, the relay 15 is provided as the driving unit, but a transistor element or the like may be used instead of the relay 15. Further, in the present embodiment, the barcode 2b is applied as the information for classifying the electronic component. However, instead of the barcode 2b, data input by a magnetic tape, a magnetic card, a keyboard, or the like may be applied.
[0039]
Further, in the present embodiment, the AND circuit 14 is provided in the personal computer 10 as the determination means of the present invention. However, the AND circuit 14 is omitted and the control circuit 3 of the electronic component mounting apparatus 1 is connected to the CPU 13a of the personal computer 10. The CPU 13a may use the CPU 13a as the determination means of the present invention to perform a logical AND process on the control signal (H signal or L signal) from the control circuit 3 and the result of collation between the barcode data.
[0040]
Further, in the electronic component erroneous mounting prevention system according to the present invention, the AND circuit 14 and the relay 15 may be separated from the personal computer 10 and a programmable controller having the separated AND circuit 14 and relay 15 may be provided. In this case, the erroneous mounting prevention device of the present invention is constituted by the programmable controller, the personal computer 10 and the barcode reader 11. Of course, the CPU of the programmable controller is used as the determination means of the present invention, and the control signal (H signal or L signal) from the control circuit 3 and the output signal based on the collation result between the bar code data in the control unit 13 of the personal computer 10 are used. May be performed.
[0041]
【The invention's effect】
According to the present invention, an erroneous mounting prevention device can be selected without being substantially restricted by the communication standard of the electronic component mounting device, and the erroneous mounting prevention device can be easily attached to an existing electronic component mounting device.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating an example of a system for preventing erroneous mounting of an electronic component.
FIG. 2 is a block diagram showing a control configuration of a system for preventing erroneous mounting of electronic components.
FIG. 3 is a flowchart illustrating a processing procedure of an erroneous mounting prevention method using the erroneous mounting prevention system for an electronic component.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 electronic component mounting device 2 tape feeder 2a reel 2b barcode 3 control circuit 4 sensor 5 start switch circuit 5a relay 6 indicator lights 6a, 6b display unit 7 power supply 10 personal computer (part of mis-mounting prevention device)
11 Barcode reader (part of mis-mounting prevention device, detection means)
12 display 13 control unit (collation means)
13a CPU
13b ROM
13c RAM
14 AND circuit (determination means)
15 relays (driving means)

Claims (1)

An electronic component mounting apparatus that mounts electronic components classified on the basis of information such as a barcode on a printed board, and an electronic component of a type different from a predetermined type mounted on the printed board in the electronic component mounting apparatus. And a device for preventing erroneous mounting of electronic components, comprising:
The electronic component mounting apparatus,
A start switch circuit for controlling the mounting start operation,
A control circuit that outputs an H signal or an L signal based on the presence or absence of an electronic component;
Has,
The erroneous mounting prevention device,
Detecting means for detecting information of the electronic component;
Matching means for comparing the information detected by the detection means with the registered information and outputting a signal indicating whether or not each information matches each other,
Based on the H signal or L signal output from the control circuit and the signal output from the matching unit, the electronic component mounting apparatus has an electronic component and the information detected by the detection unit and the registered information When it is determined that they match each other, a determination unit that outputs a determination signal indicating the determination result,
A driving unit that outputs a driving signal for operating the start switch circuit based on the determination signal output from the determining unit,
A system for preventing erroneous mounting of electronic components, comprising:

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