JPH0342580A - Adjusting and inspecting device for electronic circuit board - Google Patents

Abstract

PURPOSE:To automatically adjust and inspect the different kinds of electronic circuit boards even if they coexist in the same production line by providing a line feeder, storage means, kinds identifying means, reading-out means, robot means, driving means, and adjusting/inspecting means. CONSTITUTION:The kinds of electronic circuit board 2 forwarded to a board inspection block which is arranged on the line feeder 1 are discriminated by a kinds recognizing sensor 3 which is the kinds identifying means to identify the kinds of circuit boards. In a control device 7, an adjusting/inspecting procedure applicable to the circuit board recognized by the signal is read out from the storage device, each robot are actuated in accordance with the operational procedure, and a probe and driver mounted on the tip of the hand are made to move to prescribed positions. An electric power is impressed on necessary parts of the circuit board 2 to actually operate the circuit, and an output signal of this circuit is sent to the control device 7 from the probe 4e of the robot 4 for signal detection, then the required adjustment and inspection are made for the board 2 in the manner of deciding whether the output signal has the prescribed value or not.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an adjustment and inspection device for electronic circuit boards, and particularly to an electronic circuit board adjustment and inspection device that can continuously adjust and inspect a plurality of F1 type electronic circuit boards. Regarding equipment.

(Prior Art) Home appliances such as radio cassettes and television sets have traditionally been made unparalleled in cost through mass production. This low cost through mass production was brought about by the success of thorough automation and labor saving.

Furthermore, recently, due to the diversification of consumer needs and expansion of market size, the home appliance industry has often had to respond to high-mix, low-volume production.

By the way, in order to automatically assemble and automatically adjust and inspect electronic circuit boards used in home appliances, it is first necessary to cut multiple printed circuit boards of the same size to form a predetermined printed wiring circuit. The printed circuit boards are mounted on an automatic electronic circuit board assembly machine, and these printed circuit boards are sent one by one to an assembly line feeder, and electronic components are automatically mounted at predetermined positions on each board, and the automatic soldering is performed by the machine. After soldering to the printed wiring circuit, an automatic alignment check of the circuit is performed.

In this automatic operation adjustment inspection, assembled electronic circuit boards are sequentially transferred to an inspection area by a transfer mechanism such as a conveyor. At predetermined positions on the electronic circuit board to be inspected for function adjustment, there are provided test bins used for checking terminals such as power supply terminals, input/output terminals, voltages in the middle of the circuit, signals in the middle of the circuit, and the like.

In addition, a movable test probe with a contact that contacts parts such as power supply terminals of the electronic circuit board being transferred is installed in the inspection area, and when the electronic circuit board is stopped at a predetermined position in the inspection area. , this test probe approaches the electronic circuit board, the contactor makes contact with a designated terminal or test pin, supplies power to the part to be tested, operates the circuit, and analyzes the signals obtained from each test probe using a computer. to adjust the circuit operation and judge whether it is good or bad.

(Problems to be Solved by the Invention) The automatic adjustment inspection device for electronic circuit boards as described above can automatically test a large number of electronic circuit boards, but it is difficult to use test probes that can handle a wide variety of electronic circuit boards. It is difficult to create test probes, and it is also difficult to provide multiple types of test probes and use them properly for different types of electronic circuit boards, so it is difficult to support high-mix low-volume production of electronic circuit boards. Can not.

In addition, a mechanical encoder is required for the rotation control (driver) necessary for adjustment inspection, and there is a drawback that accurate variable register rotation control cannot be performed without an encoder.

The present invention is intended to improve the conventional drawbacks as described above, and its purpose is to automatically and easily process any types of different electronic circuit boards coexisting on the same production line. It is an object of the present invention to provide an electronic circuit board adjustment and inspection device that can perform adjustment and inspection of circuits. .

(Means for Solving the Problems) In order to achieve the above-mentioned objects of the present invention, the present invention provides the following:
An electronic circuit board adjustment and inspection device that automatically inspects multiple electronic circuit boards that are continuously transferred includes a line feeder that transfers the electronic circuit boards to a board inspection block, and an adjustment and inspection procedure that corresponds to the electronic circuit board. A storage means for storing, a model identification means for identifying the type of electronic circuit board transferred to the board inspection block, a reading means for reading out from the storage means an adjustment inspection procedure corresponding to the identified electronic circuit board, and an electronic circuit board. a robot means having a probe that contacts a predetermined terminal of the electronic circuit board; a drive means that drives the robot means to bring the probe into contact with a predetermined position according to an adjustment inspection procedure read out from the storage means; and a drive means that transmits a signal from the probe to an electronic circuit board. The present invention provides an electronic circuit board adjustment/inspection device characterized by having an adjustment/inspection means for adjusting/inspecting the electronic circuit board using an output signal obtained from the electronic circuit board.

(Function) The type of electronic circuit board sent to the board inspection block provided on the line feeder for transporting the electronic circuit board is determined by a model identification means for identifying the type of electronic circuit board. The adjustment inspection procedure corresponding to the identified electronic circuit board is read from the storage means, and the robot means operates according to the order, applies a signal from the probe to the electronic circuit board, and sends an output signal that caused the board to operate to the robot means. The provided probe picks up the signal, and the electronic circuit board is adjusted and inspected using this signal.

(Example) Embodiments of the present invention will be described in detail using the drawings.

FIG. 1 is a perspective view showing one inspection block of an electronic circuit board adjustment and inspection apparatus according to the present invention. In Figure 1, 1
is a line feeder. On the line feeder 1, printed wiring boards for assembling electronic circuits are transferred, and electronic circuit boards 2 that have been assembled are transferred to the electronic circuit board adjustment/inspection apparatus according to the present invention. In FIG. 1, only one electronic circuit board is shown on the line feeder 1, but in reality, electronic circuit boards with different circuit configurations are mixed and moved one after another on the line feeder 1. It is. Various electronic components 2 are mounted on the electronic circuit board 2.
A, 2a, etc. are mounted, and on its surface are provided terminals 2b such as power supply terminals, input/output terminals, etc., and a test bin 2c used for checking voltages in the middle of the circuit, checking signals in the middle of the circuit, etc. In addition, a barcode sticker 2d indicating the type of electronic circuit board is provided. Note that 2a' is a variable resistor which is a type of electronic component.

Reference numeral 3 denotes a model recognition sensor provided on the side of the line feeder 1, which in this embodiment is constituted by a barcode reader that reads a barcode on a barcode sticker 2d provided on the electronic circuit board 2.

A signal detection robot 4 is attached to the side of the line feeder 1 opposite to the model recognition sensor 3. The signal detection robot 4 is a SCARA type robot, as shown in FIG.

The SCARA type robot that constitutes the signal detection robot 4 is
As shown in FIG. 2, there is an arm 4b that can freely rotate in the X-Y plane around a support 4a fixed to the line feeder 1, and an arm 4c that can also freely rotate in the X-Y plane at the tip of the arm 4b. , is a three-degree-of-freedom robot having a hand 4d that moves up and down in the Z-axis direction at the tip of the arm 4c.

A probe 4e is attached to the tip of the hand 4d. Probe 4 at the tip of hand 4d in the three-dimensional coordinate system
Three degrees of freedom are sufficient to express the position of e.

5 is a power supply robot, and signal detection robot 4
It is attached to the back side of the line feeder 1 in line with the line feeder 1. The power supply robot 5 is the signal detection robot 4
It is a three-degree-of-freedom SCARA type robot with a similar configuration to that of the robot, and the support is provided with two movable arms and a hand, and a probe for power supply is attached to the tip of the hand. Although not all of the power supply robot 5 is shown in FIG. 1, its hand 5d and power supply probe 5e are partially visible below the electronic circuit board 2. A plurality of power terminals are provided on the insulating base of the power supply probe 5e, and predetermined ones of these power supply terminals come into contact with the power supply terminals protruding from the back side of the electronic circuit board 2. , temporarily supplies power to the electronic circuit board 2.

Reference numeral 6 denotes a variable pull register adjustment robot, which is attached to the line feeder 1 along with the signal detection robot 4 and the power supply robot 5. The barrier pull register adjustment robot 6 is a three-degree-of-freedom SCARA type robot having the same configuration as the two robots described above, and has two movable arms 6b, 6c and a hand 6d on a support 6a. A driver rotation module 6e is attached to the tip of the hand 6d. As shown in detail in FIG. 4, the driver rotation module 6e has a U-shaped base 6f, and the base 6f includes a gear motor h for rotating the driver 6g. is installed.

Reference numeral 7 denotes a control device for controlling the electronic circuit board adjustment/inspection device according to the present invention including the three robots, and receives signals from a signal input terminal for inputting signals from the model recognition sensor 3 and the probe 4e. At the same time, signals for driving and controlling the arms and hands of each robot are output from the signal output terminal.

Furthermore, the control device 7 also includes a robot motion teaching device that teaches the adjustment/inspection operation position of each robot in advance and has a storage device for storing the teaching data. The control device 7 also includes a measuring device that stores the measurement results of the measured electronic circuit board and further determines the quality of the measured electronic circuit board from the measurement results.

Next, the operation of one inspection block of the electronic circuit board adjustment inspection apparatus according to the present invention as described above will be explained.

First, prepare multiple types of electronic circuit boards that require inspection.
One of them is attached to a predetermined position on the line feeder 1. And a barcode seal 2 provided on the electronic circuit board 2
After reading the barcode written in d with the model recognition sensor 3, the signal detection robot 4 is operated using the robot operation teaching device provided in the control device 7, and the probe 4e is moved to a predetermined position on the electronic circuit board. The probe is brought into contact with the terminal, the operating position of the probe is stored in the storage device within the control device 7, and the teaching of the signal detection robot 4 is completed. continue,
The power supply robot 5 and the variable resistor adjustment robot 6 are also taught the operating positions of the probes and drivers in the same manner as described above, and are also taught a series of sequence operations thereof.

In this way, once the teaching operation of the first electronic circuit board is completed, the second and third electronic circuit boards of different types are connected in the same manner as described above.
・Perform teaching operations regarding the electronic circuit board.

After the teaching operation is completed in this manner, the actual inspection operation begins, and a plurality of types of electronic circuit boards that have been assembled are mixed and fed onto the line feeder 1.

If the first electronic circuit board is sent to the inspection block shown in FIG. When the code is sent, the control device 7 reads out the teaching data corresponding to the recognized circuit board from the storage device.
Operate the three robots according to the operating order, move the probe and driver attached to the tip of each robot's hand to a predetermined position, apply power to the necessary parts of the electronic circuit board to actually operate the circuit, and check the circuit. The output signal is sent from the probe 4e of the signal detection robot 4 to the control device 7, and it is determined whether the analog value of the output signal is a predetermined value. If "no", the variable register adjustment robot 6 is rotated to rotate the rotary mover of the variable pull register 2a', and the output signal value is set to a predetermined value. Furthermore, if other test points exist within the same electronic circuit board, a series of adjustment and inspection procedures similar to those described above are repeated to adjust the predetermined points.

When the adjustment inspection of the first electronic circuit board is completed, it is moved and the second electronic circuit board is sent to the inspection block.The model recognition sensor 3 reads the type of the electronic circuit board and sends it to the control device. When the signal is sent, the control device 7 reads the teaching data corresponding to the recognized electronic circuit board from the storage device, causes the three robots to operate according to the operation order, and executes adjustment inspection for the corresponding electronic circuit board. It is.

In the above-described embodiment, the probe provided on the robot's hand has a simple structure to simplify the explanation, but the structure can be changed as necessary.

The above embodiment describes an electronic circuit board adjustment/inspection apparatus that has one inspection block and performs multiple types of adjustment/inspection operations in this inspection block. If this is executed, the configuration of the electronic circuit board adjustment/inspection apparatus shown in FIG. 1 may become complicated.

Therefore, in the present invention, the entire electronic circuit board adjustment/inspection apparatus can be simply configured by arranging a plurality of inspection blocks in series.

FIG. 5 shows such an embodiment, and shows an electronic circuit board adjustment and inspection apparatus for adjusting and inspecting three types of electronic circuit boards: AM radio, FM radio, and AM-FM two-band radio.

In FIG. 5, ■ is a reference frequency adjustment test block, !
■ indicates the local oscillation frequency adjustment test block, Ill indicates the intermediate frequency amplifier circuit adjustment test block, ■ indicates the adjustment test block for the high frequency amplifier circuit of AM radio, and V indicates the adjustment test block for the high frequency amplifier circuit of FM radio. I-
The adjustment inspection block of V includes a model identification sensor, a signal detection robot, a power supply robot, as shown in Figure 1.
It is equipped with a robot and control device for adjusting variable resistors. These control devices 7a to 7e become slaves to the line computer 8 and are centrally controlled by the computer. Note that the same parts as those in the above-mentioned embodiment are given the same reference numerals, and the explanation thereof will be omitted.

In the embodiment shown in FIG. 5, a teaching operation similar to that of the previous embodiment is performed for each type of electronic circuit board in each adjustment inspection block before the adjustment inspection operation is performed.

When all teaching operations are completed, the actual inspection operation begins.
It is assumed that the first electronic circuit board, in which a plurality of types of electronic circuit boards that have been assembled are mixedly fed onto the line feeder 1, is an electronic circuit board for an AM radio without a high frequency amplifier. The electronic circuit board moves on the line feeder 1 and reaches the reference frequency adjustment inspection block I&:. When the control device 7a reads the type of electronic circuit board and transmits the information to the line computer 8, the line computer 8 determines that adjustment inspection is necessary in the adjustment inspection block, and instructs the control device 7a to adjust the reference frequency. Instruct execution of inspection. The adjustment test block executes the adjustment test according to a predetermined procedure. The results of the adjustment and inspection of the electronic circuit board and the judgment of quality are sent from the control device 7a to the line computer 8 and stored therein.

Thereafter, the electronic circuit board is assembled into a local oscillation frequency adjustment test block II, an intermediate frequency amplification circuit adjustment test block II
The adjustment is inspected at I. Note that the electronic circuit board passes through the adjustment inspection block (■) of the high-frequency amplification circuit of AM radio and the adjustment inspection block (V) of the high-frequency amplification circuit of FM radio.
Since there is no need for adjustment inspection in these blocks, these adjustment inspection blocks are passed through according to instructions from the line computer 8.

Assume that the second electronic circuit board is an electronic circuit board for an AM radio equipped with a high frequency amplifier. The electronic circuit board is
In addition to the above-mentioned electronic circuit board, the high frequency amplifier circuit of the AM radio will undergo an adjustment inspection in the adjustment inspection block (2).

Assume that the third electronic circuit board is an electronic circuit board for an FM radio equipped with a high frequency amplifier. The electronic circuit board is
In addition to the electronic circuit board described above, the high frequency amplification circuit of the FM radio will undergo an adjustment inspection at the adjustment inspection block V.

The fourth electronic circuit board is an AM-F with a high frequency amplifier.
If it is an electronic circuit board for an M radio, the electronic circuit board will be subjected to adjustment inspections of all of the above-mentioned IV adjustment inspection blocks.

The robot means used in the above embodiment is a SCARA type robot, but when the electronic components on the electronic circuit board are crowded and the probe cannot reach the terminal from directly above the circuit board, the robot means may be used. It goes without saying that other suitable types of robotic means can be used, such as, for example, polar robots.

(Effects of the Invention) As described above in detail, the electronic circuit board adjustment and inspection device according to the present invention has a memory that stores the line for transferring the electronic circuit board to the board inspection block and the adjustment and inspection procedure according to the electronic circuit board. A model identification means for identifying the type of the electronic circuit board transferred to the means and the board inspection block, and a reading means for reading out an adjustment inspection procedure according to the identified electronic circuit board from the storage means, and a predetermined terminal of the electronic circuit board are brought into contact with each other. A robot means having a probe, a driving means for driving the robot means to bring the probe into contact with a predetermined position according to an adjustment inspection procedure read from the storage means, and an output obtained from the electronic circuit board by applying a signal from the probe to an electronic circuit board. Since the system is equipped with an adjustment inspection means for adjusting and inspecting electronic circuit boards based on signals, even if multiple types of electronic circuit boards are flowing together on the adjustment inspection line, a predetermined adjustment inspection can be performed on each electronic circuit board. Therefore, it is possible to cope with high-mix, low-volume production of electronic circuit boards.

Furthermore, since the probe provided at the tip of the robot means can be moved to any position on the electronic circuit board, for example,
You can easily adjust the variable pull resistor by applying a predetermined voltage across both ends of the variable pull resistor, touching the probe to its sliding terminal, and reading the analog voltage at that terminal with the probe. The electronic circuit can be adjusted by only operating some of the electronic components without operating the entire electronic circuit, and the mechanical encoder required in conventional adjustment/inspection equipment can be eliminated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an inspection block of an electronic circuit board adjustment/inspection apparatus according to the present invention, FIG. 2 is a perspective view of a SCARA type robot used in the present invention, and FIG. 3 is a SCARA type robot. FIG. 4 is a perspective view showing one embodiment of the probe, and FIG. 5 is a block diagram showing another embodiment of the electronic circuit board adjustment/inspection apparatus according to the present invention. 1...Line feeder 2...Electronic circuit board 2 2a...Electronic component 2a 2c...Test pin 2C 2d...Barcode seal 2a'...Variable pull register 3...Model recognition sensor 4...Signal detection robot 4a...Strut 4b...Arm 4c...Arm 4d ◆Hand 4e...Probe 5...Power supply robot 6...Barrier pull register adjustment robot 7.7a~7
e...Control device 8...Line computer

Claims (4)

[Claims] (1) In an electronic circuit board adjustment and inspection device that automatically inspects multiple electronic circuit boards that are continuously transferred, there is a line feeder that transports the electronic circuit boards to the board inspection block, and adjustment according to the electronic circuit board. a storage means for storing an inspection procedure; a model identification means for identifying the type of electronic circuit board transferred to the board inspection block; a reading means for reading out from the storage means an adjustment inspection procedure according to the identified electronic circuit board; robot means having a probe that contacts a predetermined terminal of an electronic circuit board; driving means that drives the robot means to bring the probe into contact with a predetermined position according to an adjustment inspection procedure read from the storage means; 1. An electronic circuit board adjustment/inspection device comprising: an adjustment/inspection means for applying a signal to the electronic circuit board and adjusting/inspecting the electronic circuit board using an output signal obtained from the electronic circuit board. (2) The electronic circuit board adjustment/inspection apparatus according to claim (1), wherein the electronic circuit board adjustment/inspection apparatus has a plurality of board inspection blocks, and these board inspection blocks are controlled by a line computer. (3) The electronic circuit board adjustment/inspection apparatus according to claim (1) or (2), wherein the robot means is a SCARA type robot. (4) The electronic circuit board adjustment inspection according to claim (1), (2), or (3), wherein the robot means is further provided with a teaching means for teaching the operating procedure of the robot means. Device.