JP3307341B2 - Screening equipment for mounting boards - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting board screening apparatus for inspecting, in a predetermined temperature environment, a mounted board having various electronic components mounted on a printed wiring board in good or bad operation.

[0002]

2. Description of the Related Art Conventionally, there is a screening apparatus of this type as shown in FIGS.

[0003] This screening apparatus is composed of a thermostatic bath 10 in which the temperature of the atmosphere in an internal storage chamber 100a is adjustable.
0 and the mounting substrate 120 accommodated in the constant temperature layer 100
And an inspection unit 110 for inspecting whether the operation is good or defective under the ambient temperature.

A plurality of board setting sections 103 each including a receiving connector 101 and a board receiving section 102 are provided in the housing chamber 100a in a matrix, and only four sets are shown in FIG.

[0005] The receiving connector 101 is attached to the back of the accommodation room 100 a and is configured to be connectable to the connector 121 provided on the mounting board 120.

The board receiving portion 102 is provided with the connector 1
21 so as to be connected to the receiving connector 101.
The lower edge of the mounting substrate 120 housed in the mounting board 120a is received from the lower side thereof and serves to hold the mounting board 120 in a predetermined posture.

Each of the receiving connectors 101 is connected to the inspection section 110 via a relay cable 130. Here, if a single-wire relay cable 130 is used, for example, if 100 mounting boards 120 provided with connectors 101 having 20-pole input / output terminals are to be inspected simultaneously, 2000 relay cables 130 Degree is required.

In this way, the input / output terminals of the inspection unit 110 and the corresponding input / output terminals of the connector 121 of the mounting board 120 are electrically connected to each other via the relay cable 130, and the inspection unit 110 and the mounting board 120 are connected to each other. The transmission / reception of the input / output signal for inspection is possible between them.

In order to inspect the good and bad operation of the plurality of mounting boards 120 using this screening apparatus, the mounting chambers 100a are set in the respective board setting sections 103 as described above. The ambient temperature in the chamber is set to a predetermined temperature.
10, the input signal for inspection is sequentially transmitted to each mounting board 120 according to a predetermined inspection program, and in response to this, the output signal for inspection is output from each mounting board 120, received by the inspection unit 110, and Based on the inspection output signal received at 110, whether the operation of the mounting board 120 is good or bad is determined.

[0010]

The mounting board 120 actually manufactured has various shapes, large and small sizes, the structure of the connector 121, the arrangement of the input / output terminals of the connector 121, and the like.

Therefore, for example, a specific type of mounting board 1
In the case where a different type of mounting board 120 is to be inspected by the screening device manufactured for the use of the device 20, it is necessary to replace the receiving connector 101, rewire the cable 130, and the like. In particular, each receiving connector 10
1 and the inspection unit 110 is troublesome, and in some cases, it is necessary to rewire several thousand or more relay cables 130.

For this reason, in the conventional screening apparatus, it is difficult for one screening apparatus to perform a test of good or bad operation on different types of mounting boards.
There is a problem that it is practically impossible and that a dedicated screening device must be prepared for each type of mounting substrate.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and a single device inspects different types of mounting boards for good or bad operation under a predetermined temperature environment. It is an object of the present invention to provide a mounting substrate screening apparatus capable of performing the above.

[0014]

According to a first aspect of the present invention, there is provided an apparatus for screening a mounting board, which tests whether the operation of the mounting board is good or bad under a predetermined temperature environment. A mounting apparatus for screening a mounting board, in which a constant temperature chamber in which an ambient temperature in an internal pallet accommodating chamber is adjustable, and a mounting board formed for each type of mounting board to be inspected, and a corresponding inspection target And a plurality of pallets that can be detachably accommodated in the pallet accommodation chamber, and an input / output terminal for inputting / outputting an input / output signal for inspection. And transmits an inspection input signal to each of the mounting boards set on the pallet via the input / output terminals, and also outputs an inspection output signal output from each of the mounting boards. Inspection means for inspecting the operation of the mounting boards for good or bad, and a common relay connector is provided for each of the plurality of pallets, and the pallets are housed in the pallet housing chamber. A receiving relay connector that is connected to the relay connector in a state where the relay connector is provided, and in each of the pallets, a wiring group from the relay connector is branched according to the number of mounting boards set on the pallet, and the branch is performed. Receiving connectors connected to the connectors of the respective mounting boards are provided at the ends of the wiring groups, and the input / output terminals of the connectors correspond to the corresponding type of the mounting board to be inspected. Input / output switching means for switching wiring so as to be electrically connected to the input / output terminals is provided between the relay connector and the inspection means. It is interposed.

According to a second aspect of the present invention, there is further provided control means for inputting data of the type of the mounting board to be inspected, and when the data is input to the control means, A wiring switching command for performing wiring switching according to the mounting board corresponding to the data input is given to the input / output switching means, and a command to execute an inspection according to the mounting board is given to the testing means. May be configured.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mounting board screening apparatus according to one embodiment of the present invention will be described below.

In this screening apparatus, as shown in FIG.
0.

As shown in FIGS. 1 and 2, the thermostatic bath 10 has a pallet storage chamber 20 having two upper and lower rows in a main body 11 thereof.
Are formed, and a door portion 12 is provided so as to be able to close and open so as to cover the front opening of each pallet storage chamber 20. The constant temperature bath 10 is provided with a well-known temperature control means so that the ambient temperature in each pallet storage chamber 20 can be freely adjusted to be controlled to a predetermined temperature according to the inspection conditions. It is configured.

Each of the pallet storage chambers 20 is formed in a horizontally long space separated by a shelf 19 between them, and both pallet storage chambers 20 have the same size, that is, their height dimension H and depth dimension D. Are formed in the same size (see FIG. 5).

Each pallet accommodating chamber 20 is configured such that pallets 30 are removably accommodated at predetermined intervals in the width direction. For example, 14 pallets 30 are stored in each of the upper and lower pallet storage chambers 20.

The pallet 30 is prepared for each type of mounting board to be inspected. For example, the pallet 30 shown in FIGS. 2 and 3 has a connector 41 at one corner. A relatively large rectangular mounting board 4
It is prepared corresponding to 0. The mounting board 4
Illustrations of various electronic components mounted on 0 are omitted.

That is, the pallet 30 has a flat rectangular parallelepiped main body portion 31 and four board setting portions 3 for setting four mounting boards 40 to the main body portion 31, respectively.
2, a receiving connector 36 connectable to the connector 41 of each mounting board 40 to be set, and a relay connector 34 electrically connected to each connector 36.

The main body 31 is finished so that the height h is slightly smaller than the height H of the pallet storage chamber 20 and the depth w is slightly smaller than the depth D of the pallet storage chamber 20. The pallet 30 is configured to be able to be stored in the pallet storage chamber 20 in a vertically standing posture.

The board set sections 32 are provided on the both sides of the main body section 31 in two sets, one on top of the other, and the lower two corner sections of each mounting board 40 are detachably held, and the like. Each of the mounting boards 40 is configured to be able to be set two by two on both side surfaces of the main body 31.

The relay connector 34 is provided at the center of the rear end face (left side in FIG. 3) of the main body 31 so as to be connectable to the relay connector 21 in the pallet accommodating chamber 20 described later. (See FIG. 5).

A pair of pilot pins 35 are located on the rear end face of the main body 31 so as to sandwich the relay connector 34 from above and below.
Is protruding. The tip of each pilot pin 35
It is finished to be slightly sharp, and is configured to be insertable into a hole 23a of a pilot pin receiving portion 23 described later (see FIG. 5).

An electric wire group (wiring group) extending from the relay connector 34 is mounted on a mounting board 40 set on the pallet 30.
, And the receiving connectors 36 are attached to the ends of the branched electric wire groups (branch wiring groups) 37, respectively.

Then, each receiving connector 36 is connected to the connector 41.
, Each input / output terminal of the connector 41 is configured to be electrically connected to a plurality of terminals of the relay connector 34 in one-to-one correspondence.

A handle portion 33 is provided on the front end (right side in FIG. 3) of the main body portion 31. When the pallet 30 is taken in and out of the pallet accommodating chamber 20, the handle portion 33 is easily held. It is designed to be able to take in and out work.

The pallet 30B shown in FIG. 4 is prepared corresponding to a relatively small rectangular mounting board 40B provided with a connector 41B at the center on one long side. The illustration of various electronic components mounted on the mounting board 40B is also omitted.

The pallet 30B is a pallet 30B.
A main body 31, a handle 33, a relay connector 34, and a pilot pin 35 having the same structure as those of the pallet 30 are provided. Relay connector 21
It is configured so that it can be connected to.

As a configuration different from that of the pallet 30, six mounting boards 40 B can be set on each side surface of the main body 31 by the substrate setting portions 32 B provided on each side surface of the main body 31. It is configured as follows.

Another difference is that the relay connector 3
4 are branched into 12 according to the number of mounting boards 40B set on the pallet 30, and the connectors 41B are respectively connected to the ends of the branch wires (branch wires) 37B. A receiving connector 36B that can be connected to the connector is attached.

Then, each receiving connector 36B is connected to the connector 4
1B, each input / output terminal of the connector 41B is electrically connected to a plurality of terminals of the relay connector 34 in one-to-one correspondence.

As shown in FIGS. 2 and 5, the pallet accommodation chamber 20 for accommodating the pallets 30 (or 30B) is provided at each position on the inner wall surface where the pallets 30 (or 30B) are accommodated. A receiving connector 21 and a pilot pin receiving portion 23 are provided, respectively.

The receiving / receiving connector 21 is formed in a vertically elongated shape extending in the up-down direction, and a plurality of terminals 22 corresponding to the respective terminals of the relay connector 34 are provided therein. The receiving connector 21 is connected to the pallet 30 (or 3
0B) is disposed in a position facing the relay connector 34 in a state of being stored in the pallet storage chamber 20.

A pilot pin receiving portion 23 having a hole 23a into which a pilot pin 35 can be inserted is provided at each position on the inner wall surface of the pallet accommodating chamber 20 to sandwich the relay connector 21 from above and below. Each of the pilot pin receiving portions 23 holds the pilot pin 3 (or 30B) in a state where the pallet 30 (or 30B) is stored in the pallet storage chamber 20.
5 is provided at a position facing the same.

When each pallet 30 (or 30B) is pushed into the pallet accommodating chamber 20 while being guided by inserting each pilot pin 35 into the hole 23a of the pilot pin receiving portion 23, the relay connector 34 is provided. Are connected to the receiving / receiving connector 21. In this manner, each terminal of the relay connector 34 is electrically connected to each corresponding terminal of the receiving connector 21.

A relay cable 90 (a group of wires) extending from each of the receiving / connecting connectors 21 is pulled out from the rear side of the thermostat 10 and connected to the inspection / measuring device 50.

The inspection / measurement device 50 includes an inspection unit 70 for inspecting whether the operation of the mounting board 40 is good or defective, an input / output switching unit 60 for switching wiring, an inspection unit 70 and an input / output switching unit. And control means 80 connected to the control means 60.

The control means 80 includes a CPU, a ROM and an R
A general microcomputer such as a personal computer having an AM or the like is used. When data (for example, a product number) relating to the mounting board 40 (or 40B) to be inspected is input to the control means 80, the data is input. Is given to the input / output switching unit 60 in accordance with the mounting board 40 (or 40B) corresponding to the above, and an inspection command to execute an inspection corresponding to the mounting board 40 (or 40B) is given to the inspection unit 70. It is configured to be.

The input / output switching section 60 includes an input / output section 60a on the thermostat 10 side, an input / output section 60b on the inspection section 70 side, and a switching circuit section 60c for switching wiring between the input / output sections 60a and 60b. Is provided.

The input / output section 60a on the thermostat 10 side has an input / output receiving connector 61 electrically connected to an input / output connector 91 attached to the end of the relay cable 90 drawn out from the receiving / receiving connector 21. Have. A plurality of the input / output receiving connectors 61 are provided corresponding to the number of the relay connectors 21 provided in the constant temperature bath 10 (the number of the pallets 30 accommodated in the pallet accommodating chamber 20). The receiving connector 61 includes a plurality of terminals corresponding to each terminal of the corresponding receiving relay connector 21.

The input / output unit 60b on the inspection unit 70 side
A plurality of terminals corresponding to the input / output terminals for inspection of the inspection unit 70 described later are provided, and each terminal corresponds to the input / output terminal for inspection of the inspection unit 70 via the cable 94 in a one-to-one correspondence. Electrically connected. The input / output unit 60 on the inspection unit 70 side
The number of terminals b is the same as the number of terminals of the input / output unit 60a on the thermostat 10 side.

The switching circuit section 60c is provided with an input / output section 60 on the thermostat 10 side by using a switching function of a transistor or the like.
The connection switching (switching of wiring) between the terminal a and the terminal of the input / output unit 60b on the inspection unit 70 side is performed. This switch is
This is performed based on the wiring switching command given from the control means 80, and when the wiring switching command is given, each of the input / output units 60a on the thermostat 10 side according to the mounting board 40 (or 40B) to be inspected. Terminal and input / output unit 6 on inspection unit 70 side
0b are switched and connected in a one-to-one correspondence, so that the input / output terminals of the connector 41 (or 41B) according to the mounting board 40 (or 40B) to be inspected correspond to the corresponding inspection boards. It is configured to be electrically connected to the input / output terminal of the unit 70 in a 1: 1 correspondence.

The inspection section 70 has an input / output terminal for inputting / outputting an input / output signal for inspection. A predetermined inspection program corresponding to the type of the mounting board 40 (or 40B) is stored in its internal memory in advance. Stored. The input / output terminals are electrically connected to the input / output terminals of the connector 41 (or 41B) of each mounting board 40 (or 40B) in the constant temperature layer 10 via the input / output switching means 60. From the control means 80, the mounting substrate 40 to be inspected.
When an inspection command of (or 40B) is given, an input signal for inspection is sequentially sent to each mounting board 40 (or 40B) based on an inspection program corresponding to the mounting board 40 (or 40B).
While, in response, an output signal for inspection output from each mounting board 40 (or 40B) is received,
Based on the received inspection output signal, each mounting substrate 4
It is configured to determine whether the operation of 0 (or 40B) is good or bad.

The mounting board screening apparatus of the present invention is configured as described above. Next, a method of inspecting the mounting board 40 (or 40B) using the screening apparatus will be described.

First, when inspecting the mounting board 40, four mounting boards 40 are set on the respective board setting sections 32 of the pallet 30 shown in FIG. Next, the receiving connectors 36 of the pallet 30 are connected to the connectors 41 of the mounting boards 40, respectively. This is similarly performed for the other pallets 30 to be stored in the pallet storage chamber 20.

Then, these pallets 30 are accommodated in the pallet accommodating chambers 20, respectively, and the relay connectors 34 of the pallets 30 are respectively connected to the respective relay connectors 21 of the pallet accommodating chamber 20.

Thereafter, when data (for example, a product number) relating to the mounting board 40 to be inspected is input to the control means 80, a wiring switching command corresponding thereto is given to the input / output switching section 60, and thereby the pallet Containment room 2
0 connectors 41 of all mounting boards 40 housed in
Are electrically connected to the corresponding input / output terminals of the inspection unit 70, respectively.

A command to execute an inspection according to the mounting board 40 to be inspected is sent from the control unit 80 to the inspection unit 70.
At the same time, the inspection of each mounting board 40 is started by the inspection unit 70 according to a predetermined inspection program.
That is, the input / output terminal of the inspection unit 70 and the input / output switching unit 6
0, a predetermined input signal for inspection is transmitted from the inspection section 70 to each mounting board 40 via the relay cable 90, the receiving relay connector 21, the relay connector 34, the receiving connector 36, and the connector 41, and responds thereto. The inspection output signal output from each mounting board 40 is received by the inspection unit 70, and the inspection unit 70 inspects the operation of each mounting board 40 based on the inspection output signal.

The inspection of the mounting boards 40B is performed in the same manner. That is, first, the twelve mounting boards 40B are placed in each board setting portion 32B of each pallet 30B to be stored in the pallet storage chamber 20. After being set, each pallet 30B is accommodated in the pallet accommodating chamber 20, and each relay connector 34 is connected to each receiving / relaying connector 21 in the pallet accommodating chamber 20, as described above.

When data (for example, product number) relating to the mounting board 40B to be inspected is input to the control means 80, a wiring switching command is given to the input / output switching section 60, and the input / output switching section 60 Is switched in accordance with the conditions described above, and the input / output terminals of the connectors 41B of all the mounting boards 40B housed in the pallet housing chamber 20 are electrically connected to the input / output terminals of the inspection unit 70 corresponding to them. Be connected.

Further, the control unit 80 simultaneously gives an instruction to execute an inspection corresponding to the mounting board 40B to be inspected to the inspection unit 70, and the inspection unit 70 operates the mounting board 40B in the same manner as described above. Good and bad are inspected.

According to the mounting board screening apparatus configured as described above, a plurality of mounting boards 40 (or 40 B) of the respective types to be inspected can be set and the pallet accommodating chamber 20 can be set. The pallet 30 (or 30) which can be detachably stored respectively.
B) is a type of mounting board 40 (or 40
B), a plurality of types are formed in correspondence with each other, so that even if the mounting boards 40 (or 40B) of different types are used, by using the pallets 30 (or 30B) corresponding thereto, the mounting boards 40 (or 40B) are formed. ) Can be stored in the pallet storage chamber 20 of the thermostat 10.

The connector 41 (or 41B) of each mounting board 40 (or 40B) includes the branch wire group 37 (or 37B), the relay connector 34, the receiving / relay connector 21, the relay cable 90, the input / output switching unit 60, The input / output terminal of the connector 41 (or 41B) is electrically connected to the corresponding input / output terminal of the inspection unit 70 by the input / output switching unit 60. Since the wiring is switched so as to be connected, even if the mounting boards 40 (or 40B) of different types are used, the pallets 30 (or 30B) corresponding thereto can be used.
By performing the switching of the wiring and the inspection according to the inspection program in accordance therewith, it is possible to inspect whether the operation of the mounting board 40 (or 40B) is good or defective.

Therefore, it is possible to inspect the operation of a different type of mounting board 30 (or 30B) in a single device under a predetermined temperature environment.

Further, in the conventional screening apparatus shown in FIGS. 6 and 7, it is necessary to connect the connector 121 of the mounting board 120 to the receiving connector 101 in the accommodating chamber 100a which is a narrow space, so that the connection workability is improved. It was bad,
In this screening device, the mounting board 30 is mounted on the pallet 30 (or 30B) in a large space outside the pallet storage chamber 20.
(Or 30B) can be set,
Excellent workability.

At this time, the pallet 30 (or 30
If B) is prepared twice as many as the number of pallets 30 (or 30) that can be stored in the pallet storage chamber 20,
B) is housed in the pallet housing chamber 20 and the mounting substrate 40
(Or 40B), the other half of the pallets 30 (or 30B) are mounted on the mounting board 40 (or 40B).
Since B) can be set, a large number of mounting boards 40 (or 40B) can be inspected efficiently.

Further, since the relay cable 90 connecting one receiving relay connector 21 and the input / output switching section 60 is set as one set, the relay cable 90 can be exchanged.
Replacement of the relay cable 90 at the time of thermal deterioration or the like becomes easy.

[0061]

As described above, according to the mounting board screening apparatus of the present invention, a plurality of mounting boards of a corresponding type to be inspected can be set, and the mounting boards can be detachably mounted in the pallet accommodating chamber. Since a plurality of pallets that can be accommodated are formed corresponding to each type of mounting board to be inspected, even if mounting boards of different types are used, the mounting board can be used by using the pallet corresponding thereto. It can be stored in the pallet storage chamber of the thermostat.

The wiring is switched by the input / output switching unit so that each input / output terminal of the connector of each mounting board to be inspected is electrically connected to the corresponding input / output terminal of the inspection unit. In this state, the inspection unit performs the inspection according to the mounting boards, so that it is possible to inspect whether the operation of the mounting boards of different types is good or defective.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a mounting board screening apparatus according to one embodiment of the present invention.

FIG. 2 is a perspective view showing the inside of a thermostat.

FIG. 3 is a perspective view showing a pallet.

FIG. 4 is a perspective view showing another pallet.

FIG. 5 is a cutaway view of a pallet storage chamber and a diagram showing an inspection and measurement machine.

FIG. 6 is an overall perspective view showing a conventional mounting board screening apparatus.

FIG. 7 is a perspective view showing the inside of a thermostat of the screening apparatus of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Constant-temperature bath 20 Pallet accommodation room 21 Receiving relay connector 30, 30B Pallet 34 Relay connector 36 Receiving connector 37 Wire group 40, 40B Mounting board 41, 41B connector 60 Input / output switching part 70 Inspection part 90 Relay cable 94 Cable

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Claims (2)

(57) [Claims] An apparatus for screening a mounting board for inspecting whether the operation of the mounting board is good or bad under a predetermined temperature environment, wherein the temperature of an atmosphere in an internal pallet storage chamber is adjustable. Is formed for each type of mounting board to be inspected.
A plurality of mounting boards of a corresponding type to be inspected can be set, and a plurality of pallets that can be detachably accommodated in the pallet accommodation chamber, and for inputting and outputting inspection input / output signals. Having an input / output terminal, transmitting an input signal for inspection to each of the mounting boards set on the pallet via the input / output terminals, and receiving an output signal for inspection output from each of the mounting boards, Inspection means for inspecting the operation of the mounting boards for good or bad; a common relay connector is provided for each of the plurality of pallets, and the relay is carried out in a state where the pallets are housed in the pallet housing chamber. A relay connector connected to the connector is provided, and in each of the pallets, a wiring group from the relay connector is set on the pallet. In accordance with the number of mounting boards to be inspected, receiving connectors to be connected to the connectors of the respective mounting boards are provided at the ends of the branched wiring groups, respectively. Input / output switching means for switching wiring so that input / output terminals of the connector are electrically connected to input / output terminals of the inspection means corresponding to the connector and the inspection connector, Screening device for mounting boards interposed between them. 2. A control means for inputting data of a type of a mounting board to be inspected is provided. When the data is input to the control means, the control means controls the mounting board corresponding to the data input. 2. A wiring switching command for performing wiring switching in accordance with the wiring pattern is given to the input / output switching means, and a command to execute a test according to the mounting board is given to the inspection means. Mounting board screening equipment.