JPH0443000A - Automatic regulator for printed board unit - Google Patents

Abstract

PURPOSE:To cope with variations in the position of a component to be regulated and the contact position of a probe without altering a structure by providing a regulating robot to be engaged with the component of the upper surface of a printed board, and a probe robot having a probe in contact with pins of two points of the lower surface of the board, measuring a signal from the probe, and regulating the component to be regulated. CONSTITUTION:A controller 10 supplies position data representing the position of a component to be regulated to a regulating robot 11, and outputs to a probe robot 12 position data representing the positions of two pins for removing a signal for the component to be object to be regulated. When the controller 10 sends control data to the robot 11, regulating means 111 is rotated to set the screw of the component 141 to be regulated of a printed board unit 14 to an initial position. Signal outputs detected from the two probes at this time are supplied to a measuring unit, and a measured value is supplied to the controller 10. The control data representing the regulating amount, direction are supplied to the robot 11 in response to a difference to the set value.

Description

[Detailed Description of the Invention] [Summary] An automatic adjustment device for a printed board unit in which adjusting parts that require adjustment are arranged on one side of a printed board, and pins for outputting signals of each part are arranged on the other side. Regarding.

The object of the present invention is to provide an automatic adjustment device for a printed board unit that can cope with changes in the position of adjusting parts and the contact position of a probe for different types of printed boards without changing the configuration.

An adjustment robot equipped with an adjustment means that engages adjustment parts at arbitrary positions on the top surface of the printed board, and a blowpropo 7 equipped with two arms each having a probe that contacts each of two arbitrary points on the bottom surface of the printed board. , a measuring device that measures signals from the probe, and an overall control device that controls adjustment of the adjustment parts by transmitting and receiving signals to and from the adjusting robot, the probe robot, and the measuring device.

[Industrial Application Field] The present invention relates to an automatic adjustment device for a printed board unit in which adjusting parts that require adjustment are arranged on one side of a printed board, and bins for outputting signals of each part are arranged on the other side. Regarding.

Some electronic circuits include IC circuits and LSI circuits mounted on printed boards, and components such as L (variable inductor, etc.), C (variable capacitance), R (variable resistor), etc. that have characteristic values that are difficult to integrate. may be installed.

Parts that require such adjustment (referred to as Slit adjustment parts)
When mounted on a printed board, each value has not been adjusted and the determined operation is not guaranteed. Therefore, it is necessary to adjust the values of the adjustment components while performing measurements with a measuring device so that one circuit has desired characteristics for a printed board unit on which one component is mounted. For this purpose, automation devices are used for adjusting the adjustment parts.

[Conventional technology] FIG. 7 is an explanatory diagram of a conventional example.

FIG. 7 shows a schematic configuration mainly showing the positional relationship of each part, and #adjustment parts include a plurality of adjustment parts 73 mounted on the top surface of a printed board 72 placed and fixed on a support plate 74. There are passive elements such as variable capacitance, transformer, variable resistance, etc., and each adjustment part (consisting of screws, etc.) has a "-" mark.
Or, it has a structure in which the value is adjusted by inserting a screwdriver into the groove and rotating it.

An adjustment robot 7° is arranged on the upper part of this printed board 72, and when performing xi adjustment, an adjustment tool 71 provided here (for example, a driver with a tip or e) is used to move the adjustment part 7.
The adjustment tool 71 is controlled to move in the X-axis and Y-axis directions so as to come to the position of the adjustment part 3, and then the adjustment tool 71 is lowered in the Z-axis direction.
Its tip engages with the groove of the adjustment part and stops.

On the other hand, on the lower surface of the printed board 72, there are provided a plurality of bins connected to the printed wiring signal output portion of the printed board, and when performing till adjustment, each adjustment component 73 is adjusted from each of these bins. The signal output and ground signal to be measured are generated (power has already been supplied to the printed circuit board circuit).

A probe plate 75 is arranged on the lower surface of this printed board 72, and when performing AI alignment, this probe plate 75
raises it upward in the Z-axis direction. Then, a plurality of probes (stylus) 76, which have been embedded upward in the positions of the signal extraction bins necessary for adjusting each adjustment component 73 of this printed board 72, come into contact with the respective bins of the printed board 72 facing each other. , the signal output and ground signal can be taken out from the probe.

This signal is input to a measuring device (not shown) and a measured value is obtained. This measured value is compared with a previously specified value in a control device (not shown), and if they do not match, the adjustment robot 70 is driven and the adjustment tool 71 is rotated and adjusted to the specified value.

[Problems to be Solved by the Invention] According to the above-mentioned conventional technology, since the probe (stylus) that contacts the bottle of the printed board from the bottom is fixedly provided on the probe plate, However, for printed board units with different bin placement positions, a new jig in which the corresponding probes are embedded must be manufactured, which is a problem. Furthermore, the multiple probes remain in contact with each bin during automatic adjustment, which has the disadvantage of adversely affecting the electrical characteristics of the printed circuit board. That is, although the signal to be measured changes sequentially depending on the object to be adjusted, each bin is first brought into contact with its corresponding probe, and this state is maintained during the adjustment work.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic adjustment device for a printed board unit that can cope with changes in the position of adjusting parts and the contact position of a probe for different types of printed boards without changing the configuration.

[Means to solve the problem] FIG. 1 is a diagram showing the principle configuration of the present invention.

In FIG. 1, 10 is a control device for controlling the whole, 11 is an adjustment robot that positions adjustment means at the positions of adjustment parts of the printed board unit, and 12 is an adjustment robot that individually positions two probes at arbitrary positions on the X and Y coordinates. a probe robot with two arms positioned at and in contact with corresponding bins;
13 is a measuring device that measures the signal input from the probe;
4 represents a printed board unit, and 15 represents a pedestal.

The present invention uses an adjusting robot to move an adjusting means to an adjustment position of an adjusting part at an arbitrary position of a printed board unit, and a probe robot equipped with probes provided on two arms that can be moved to arbitrary positions to adjust the adjustment part of the printed board unit. The system automatically adjusts the output signal by bringing it into contact with any two bins and extracting the output signal at the required location.

[Operation] The control device 10 stores data and programs corresponding to the type of printed board unit to be automatically adjusted in the memory 100.
We are preparing for When the printed board unit 14 is placed on the support plate 151 of the gantry 15 and its position is fixed, the control device 1o sends the adjustment robot 11 position data (X , Y, and Z coordinate positions) to give operation instructions. In parallel with this.

Operation instructions are also given to the probe robot 12 by outputting position data (X, Y, Z) representing the positions of two bins for extracting signals for the adjustment parts to be adjusted. This drives the two arms to move the probe to the specified position in the X and Y coordinates, and further moves it in the Z axis (upward) to contact the corresponding bin. Incidentally, the necessary power is supplied to the printed board unit 14 when it is fixed.

When the control device 10 sends control data to the adjusting robot 11, the adjusting means 111 of the adjusting robot 11 is rotationally driven to set the screws of the adjusting parts 141 of the printed board unit 14 to the initial positions. The signal outputs detected from the two probes at this time are supplied to the measuring device, and the measured values are supplied to the control device 10. The control device 10 determines whether the input measured value matches a preset value, and if it does not match, sends control data representing the adjustment amount and direction to the adjustment robot 11 according to the difference from the set value. supply. In response to this, the adjustment means 111 of the adjustment robot 11 performs a corresponding rotational operation.

When the adjustment for one adjustment part is completed in this way,
The control device 10 controls the adjustment robot 11 for adjusting other adjustment parts of the printed board unit 14.
and is executed for the probe robot 12. In response, the adjustment robot 11 moves the adjustment means 111 to the adjustment position of the other specified adjustment part, and
2 also move the two arms to the two designated bins.

Make contact and perform the same adjustment operation as above.

[Example] Fig. 2 is a device configuration diagram of the embodiment, Fig. 3 is a signal line connection diagram between the devices, and Figs. 4 and 5 are processing flow diagrams of the embodiment.
FIG. 6 is an explanatory diagram of the main parts of the mechanism that executes the adjustment.

In the configuration of the automatic adjustment device for printed board units shown in FIG. 2, 20 is a measurement rack, and inside this is a control device for overall control (for central processing unit CPU, memory, and input/output with other devices). ) and 2.
Various necessary measuring instruments shown in 2 are stored.

23 is a pedestal on which equipment for performing adjustment is mounted.

24 are two arms A each equipped with a probe.

A probe robot 25 includes a support part for the adjustment robot, 26 a printed board unit, and 27 a printed board unit that holds the printed board to be adjusted, places it in a position where adjustment work is performed, fixes it, and removes it after the adjustment is completed. 28 is an adjustment robot equipped with a plurality of adjustment drivers 281, 29 is an adjustment CPU for controlling the adjustment robot, and 30 is a probe stored in a rack. Probe CPU for robot control
represents.

The adjustment robot 28 has a plurality of adjustment drivers 28.
1 is provided, which is a printed board unit 26
The shape of the groove of the adjustment part provided in the adjustment part 261 is "-
There are multiple types such as ``'' or ``+'', and it is prepared to correspond to these types, and during the actual adjustment operation, the 1 specified by the control device 21 or the adjustment CPU 29 is used.
one driver is selected. In addition, probe robot 2
Each of the two arms A and B provided in 4 is equipped with a plurality of probes, such as probes with a structure for simply electrical contact, as well as probes with a structure for connecting high-frequency signals. It has a configuration that can be selected depending on the situation.

The connection relationship of the signal lines of each device shown in FIG. 2 will be explained with reference to FIG. 3.

In FIG. 3, a control device (CPU & memory) 21 is connected to an adjustment CPU 29 via an interface, and adjustment data is transferred from the control device 21 by a serial signal of the R5-232C standard.

The adjustment CPU 29 creates a control signal corresponding to this adjustment data and sends it to the adjustment robot 28 via an interface.
supplied to Similarly, contact data is sent from the control device 21 to the probe CPU 30 using a serial signal of the R3-232C standard, and
When this data is received, a corresponding signal for controlling the probe robot is generated and sent to the probe robot 24.

It was also detected from the probe. The measurement signal is the switch 31
is supplied to one of a plurality of measuring instruments (three in the example shown). The switch 31 is switched by a control signal from the control device 21 to select a measuring device corresponding to the type of adjustment component.

The results measured by the measuring device 22 are supplied to the control device 21 as measurement information. Further, the control device 21 supplies the measuring device 22 with control signals such as measurement range selection.

Next, the main parts of the adjustment mechanism will be explained with reference to FIG.

The state in which one selected tip of the adjustment driver 281 attached to the TM adjustment robot 28 is engaged with the groove of the adjustment part of the adjustment part 261 on the printed board unit 26 positioned on the support plate is shown. There is.

Two bins are provided on the bottom surface of the printed board unit 26 from which signal outputs (signal output and ground signal) of this adjustment component can be obtained. The probes that touch these two pins are arm A, respectively.

One of the plurality of probes 243 provided in B is selected in this case. Arm (241)
A and B are probe CPUs (Fig. 2).

It is driven by a control signal from 30) in FIG.

Move the probe to any position on the x and y coordinates. Z
Axial movement is achieved by air cylinder 2 installed at the tip of each arm.
42.

Selected probes 243 contact corresponding bins on the underside of the printed circuit board. The signal taken out from the pin is signal line 2
44 to the measuring device (22 in FIGS. 2 and 3).

Next, a process flow for automatically adjusting the printed board unit will be explained with reference to FIGS. 4 and 5.

Note that this processing flow is similar to that of the control device 2 in FIGS. 2 and 3.
1, the adjustment CPU 29 and the probe C
The PU 30 is operated by the adjusting robot 28 . Controls the drive of the probe robot 24, notifies the control device 21 of the operating status of each robot, starts up the CPU of the control device 21 at the beginning of the process,
Adjustment robot with All maintenance CPU and probe CPU.

The probe robot and measurement equipment are started up (initialization) (400 in Figure 4). As a result, the robot equipment that performs two mechanical movements starts the return-to-origin operation, and when the return-to-origin is completed (401, 402 in Figure 4). ), a supply/discharge instruction is issued from the control device 21 (indicated by a lamp, etc.), manual supply/discharge is performed by one operator, and when the completion key is pressed manually (using a keyboard (not shown)), the printed board supply/discharge is completed. do(
403, 404).

Next, in order to fix the printed board, the printed board clamp is started and completed (405° 406), and the position reference mark on the printed board is detected by processing using a TV camera (not shown), and the printing is completed. When it is detected that the board is deviated from the specified position, 9 position correction data is sent to the printed board feeding section, position correction is started, and position correction is performed by completing the position correction (407 to 409).

Next, the control device sends point data (coordinate data) for moving the tA alignment robot adjustment driver to the adjustment position of the adjustment part, and moves the probes of arms A and B of the probe robot (probe) to the contact position. Send probe data for These data are sent to the adjustment CPU and probe CPU, respectively (410
, 413), a signal is supplied from each CPU to drive the corresponding robot, and each robot starts moving (411, 414). As a result, the co-robot is ready for adjustment, and the probe robot can move the probe. Contact is completed (412.415).

Next, the process moves to FIG. 5 using the connectors A and B. First, data representing the rotation angle and direction of the adjustment driver is sent from the control device, and the AI adjustment CPU receives this data and drives the adjustment robot. In this case, first turn the adjustment driver in a certain direction, drop the tip of the driver into the groove of the component, and then rotate the adjustment part of the component (variable resistor, variable capacitance, or variable coil) to its limit (terminal). Select the initial position (416, 417).

Next, a control signal for switching the measuring device is sent from the control device to the switching device (see 31 in FIG. 3) (418). As a result, the measuring device for obtaining the measurement value required when executing the adjustment is selected, and when the completion of switching is detected (419), an instruction to start the m constant is generated.
Obtain the measurement results output from the selected measuring device (4
20゜421), in this case, it is the result when the adjustment part of the adjustment part is set to the initial state, and data on the rotation angle and direction is sent from the control device to the adjustment CPU after obtaining the result (421).
22).

Correspondingly, when the adjustment robot drives the adjustment driver, it instructs to start measurement and obtains the measurement results (423
, 424), the control device controls the voltage.

When the value of the resistance etc. is obtained, it is determined whether the measurement result is a preset value or not, and it is determined whether or not the adjustment in step 511 has been completed (step 425).

If the adjustment is not completed, it is determined whether or not the measured value is abnormal (this determination is made that it is abnormal if the measured value is far from a previously expected value), and if it is not abnormal.

A process of creating and sending data to be adjusted (rotation angle, direction) using a program is performed, and the following process for adjusting one component (steps 422 to 425 and 429) is repeated several times.

In the case of an abnormality, the adjustment driver is raised and the probe is lowered (steps 430, 431), and the steps 412 and 41 in FIG. 4 are connected via connectors E and F, respectively.
Returning to step 5, a retry operation is performed.

If the adjustment is completed, it is determined in step 426 whether the adjustment of all adjustment parts related to this printed board has been completed (data regarding the adjustment parts is stored in the memory of the control device in advance), and if not completed, the connector The process is started again from step 410 (FIG. 4) by C, and when it is completed, unclamping of the printed board is started (
Step 427) When unclamping is completed (step 42B), the process moves to the first step 401.

[Effects of the Invention] According to the present invention, even if the position of the adjustment part or the pin (contact position) changes depending on the type of printed board to be adjusted,
This can be resolved by changing the program (control device program?) that controls the adjustment robot and probe robot.

Automatic adjustment of various printed board units can be efficiently performed using the same adjustment device.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle configuration of the present invention, FIG. 2 is a diagram showing the configuration of a device according to an embodiment, and FIG. 3 is a diagram showing signal line connections between devices. 4 and 5 are process flow diagrams of the embodiment, FIG. 6 is an explanatory diagram of the main part of the mechanism that executes adjustment, and FIG. 7 is an explanatory diagram of the conventional example. In Figure 1. 102 Control device 11: ijl adjustment robot Rope robot: Measuring instrument Niblint plate unit: Frame

Claims (3)

[Claims] (1) In an automatic adjustment device for a printed board unit in which adjustment parts that require adjustment are placed on one side of the printed board and pins for outputting signals of each part are placed on the other side, any part of the top surface of the printed board an adjustment robot (11) equipped with an adjustment means (111) that engages with an adjustment component at the position of the probe robot (11), and a probe robot equipped with two arms each having a probe that contacts each of two arbitrary pins on the bottom surface of the printed board. (
12), a measuring device (13) that measures the signal from the probe, and a control device (10) that controls the adjustment of the adjustment part by transmitting and receiving signals to and from the adjusting robot, the probe robot, and the measuring device. An automatic adjustment device for a printed board unit characterized by: (2) Claim 1 states that the adjustment means provided in the adjustment robot is provided with a plurality of drivers with different structures, and each of the two arms provided with the probe robot is provided with a plurality of probes with different shapes. Features an automatic adjustment device for printed board units. (3) The automatic printed board unit according to claim 1 or 2, further comprising an automatic printed board feeding and ejecting mechanism that supplies the printed board unit to an adjustment position between the adjustment means and the probe and discharges the printed board unit after the adjustment is completed. Adjustment device.