JP2533642B2 - Operation panel automatic inspection device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an operation panel automatic inspection device for automatically inspecting a finished product of an operation panel which is a control information input unit of an electric device.

<Prior Art> Conventionally, for example, an operation panel of a microwave oven has been inspected by a method shown in FIG. That is, the operation panel 4
Is provided with a large number of cooking keys 44a, 44b, ... For inputting microwave oven control information on the front side as shown in FIG. 11 (a), while each cooking key is provided on the back side as shown in FIG. 11 (b). Key 44a,
Preliminarily inspected printed circuit board 61 equipped with a large number of connectors 39a, 39b, ..., Which output control signals input from 44b ,.
Built in. Then, the worker connects the respective plugs 64a, 64b, ... Provided at the tips of the many input signal lines 63 coming out of the manual checker 62 to the corresponding connectors 39a, 39b ,.
After inserting and connecting to the signal pin of, the cooking key 44 of the operation panel 4 is sequentially pressed with one hand, and the manual checker 62 is operated with the other hand to manually check whether the operation panel 4 functions normally. Is inspecting.

<Problems to be Solved by the Invention> However, in the above-described conventional inspection method, an operator must insert the plugs 65a, 65b, ... Into the corresponding connectors 39a, 39b ,. Therefore, the connection is likely to be incorrect, the connection is likely to be incomplete, the work is complicated due to the entanglement of the input signal line 63, and it takes a long time, and the input signal line 63 near the plug is easily broken. There is a drawback that. Further, since the operator has to operate the cooking key 44 and the manual checker 62 at the same time, there are disadvantages that an operation error and an abnormality are overlooked and the inspection takes time.

Therefore, an object of the present invention is to connect a connector of an operation panel to an inspection device automatically and automatically operate a key of the operation panel to reliably and quickly determine the quality of the operation panel based on a signal from the connector. It is to provide an operation panel automatic inspection device capable of performing.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the operation panel automatic inspection apparatus of the present invention is a movement that is reciprocally moved by a driving means so as to come into contact with and separate from the back surface of the operation panel set in the apparatus. A table and a guide pin that is placed on the moving table via floating means that allows fine movement within the table surface and has guide pins that fit into the alignment holes of the operation panel on the surface,
A contact pin whose tip can be electrically connected to a signal pin of a connector protruding from the rear surface of the operation panel, whose base end is connected to a signal line, and which is slidably projected by being biased toward the tip by a spring. And an automatic wiring board having a cylinder, which is arranged on the front surface side of the operation panel and has a cylinder which is driven by air passing through a solenoid valve and presses a key of the operation panel, and a drive means for the movable table according to an inspection program, and A computer is provided that outputs a sequence control signal to the solenoid valve of the cylinder, determines whether the operation panel normally functions based on a signal from the signal line of the contact pin, and outputs a pass / fail signal.

<Operation> First, the drive means is operated by the sequence control signal from the computer to move the movable table forward. Then, the automatic wiring board placed on the movable table via the floating means approaches the back surface of the operation panel set in the apparatus, and the guide pin on the front surface fits into the alignment hole of the operation panel. As a result, the automatic wiring board finely moves within the movable base surface so that the contact pins on the front surface are aligned with the corresponding signal pins of the connector protruding from the rear surface of the operation panel, and further continues to approach. Then, when the automatic wiring board is pressed against the operation panel, the tips of the contact pins are brought into pressure contact with the signal pins of the connector by the urging force of the spring to be electrically connected.

Then, the solenoid valve is operated by the sequence control signal from the computer, and the air passing through the solenoid valve drives the cylinder of the cylinder board to sequentially press the keys on the surface of the operation panel. Then, the signal by pressing the key is
The signal is input from the signal pin of the connector to the computer through the contact pin and the signal line, and the computer determines whether the operation panel normally functions based on this signal according to the inspection program and outputs a pass / fail signal. When the inspection is completed, the solenoid valve is deactivated, the movable table is moved back by the driving means, and the automatic wiring board is separated from the operation panel.

<Examples> Hereinafter, the present invention will be described in detail with reference to illustrated examples.

FIG. 1 is a schematic view showing an embodiment of an automatic operation panel inspection device of the present invention, in which 1 is a case, 2 is a peripheral edge of a central opening 3a of an intermediate plate 3 provided in the case 1, A holder 5 for holding the operation panel 4 to be inspected is a case 1
It is a movable table which is provided at the center of a lower plate 6 provided inside and is moved up and down by a first air cylinder 25 (see FIG. 4) so as to come into contact with and separate from the rear surface of the operation panel 4.

Further, 7 is mounted on the moving base 5 via the floating mechanism 8 and has a large number of contacts which can be electrically connected to the signal pins 40 of the connector 39 (see FIG. 7) protruding from the rear surface of the operation panel 4. An automatic wiring board having a pin 38 and a guide pin 36 on the surface, 9 is provided at the center of the top plate 1a of the case 1, and can be moved up and down by the second air cylinder 10 so as to come into contact with and separate from the surface of the operation panel 4. A frame 11 is fixed to the lower end of the elevating frame 9 and is a cylinder board having a large number of cylinders 13 driven by air passing through the solenoid valve 12 to press the cooking key 44 (see FIG. 9) of the operation panel 4. .

Further, the operation panel automatic inspection device outputs a sequence control signal to the first and second air cylinders 38, 10 and the solenoid valve 12 according to an inspection program, and the operation panel 4 based on the signal from the contact pin 38. Is provided with a computer 51 (see FIG. 10) for outputting a pass / fail signal by judging whether or not the device normally functions. Therefore,
As shown in FIG. 2, when the first air cylinder 25 moves forward to the stroke end, the automatic wiring board 7 on the moving base 5 is moved.
Is pressed against the back surface of the operation panel 4 held by the holder 2 so that the contact pin 38 on the front surface is electrically connected to the signal pin 40, while the second air cylinder 10 moves forward to the stroke end, it moves up and down. Cylinder board 11 on frame 9
Is pressed against the surface of the operation panel 4, and the cylinder 13 presses the cooking key 44 of the operation panel 4 by supplying air.

FIG. 3 is a perspective view showing the positional relationship of the above-mentioned respective members. The operation panel 4 to be inspected is set on the holder 2 of the intermediate plate 3, and the automatic wiring board is mounted on the lower mounting base 14 facing the operation panel 4. 7 is attached, and a cylinder board 11 is also arranged above. Each contact pin 38 of the automatic wiring board 7
Each have a signal line 42, and these signal lines are appropriately bundled and connected to the computer 51 via the sockets 15, 15, .... On the other hand, each cylinder 13 of the cylinder board 11 is connected to each solenoid valve 12 by an individual pipe 16.

As shown in FIG. 4, the movable table 5 has three guide rods 22a, 22b, 22c arranged side by side at the center of the lower surface of the base plate 21, and the guide rods 22a, 22b, 22c are arranged in front of and behind the guide rods in the plane of the drawing. A pair of rollers 23, 23 are pivotally attached. Then, while the guide rods 22a, 22b, 22c are slidably inserted into the sleeves 24a, 24c and the through holes 24b provided on the lower surface of the lower plate 6, the upper surface of the lower plate 6 is moved to the left and right by the first air cylinder 25. The pair of rollers 23, 23 are rotatably mounted on the cam surface 26a of the cam plate 26 which is reciprocally moved so that the base plate 21 can be moved up and down by the reciprocation of the cam plate 26 as shown by arrow A. Has become. A spring 28 for urging the base plate 21 downward is provided between the spring receiver 27 fixed to the lower part of the central guide rod 22b and the lower surface of the lower plate 6.

FIG. 5 shows the automatic wiring board 7 mounted on the base plate 21 of the movable table 5. That is, each of the floating mechanisms 8 is attached to the four brackets 31 provided upright at the four corners of the base plate 21.
The shaft 32a of the housing 32 of the
A shaft member 34 is accommodated inside the shaft member 34 via a displacement absorbing member 33 (see FIG. 6) so that it can be finely moved in the radial direction, and the four corners of the mounting base 14 are fixed to the shaft member 34 with bolts 35. Automatic wiring board 7
Install horizontally. A pair of guide pins 36 (see FIG. 7) projecting from the surface of the automatic wiring board 7 are provided with a pair of alignment holes 37 (see FIG. 7) of the operation panel 4 (see FIG. 2) held by the holder 2. (Refer to the drawing), the mounting base 14 slightly moves in a horizontal plane with respect to the base plate 21 of the moving base 5, and a large number of contact pins 38a protruding from the automatic wiring board 7 are attached. , 38m (see FIG. 7) are aligned with the corresponding signal pins 40a, ..., 40m of the connectors 39a, ..., 39m protruding from the rear surface of the operation panel 4 as shown by arrows in FIG. A mounting error of the automatic wiring board 7 to the mounting base 14 is absorbed. On the other hand, the contact pins 38 are connected to the automatic wiring board 7 as shown in FIG.
A cylindrical portion 38a that is slidably accommodated in a pin block 41 provided above and has its tip externally fitted to the signal pin 40 and electrically connected thereto.
The base ends 38b are connected to the signal lines 42, and the springs 43 for biasing the contact pins 38 in the projecting direction are provided in the vicinity of the base ends 38b, respectively.

FIG. 9 is a detailed perspective view of the cylinder board 11 described in FIG. 3, and the cylinders 13 that are planted on the cylinder board 11 in accordance with the large number of cooking keys 44 on the surface of the operation panel 4 are solenoid valves. By the air supplied through 12 and piping 16,
The rod 13a is projected and the corresponding cooking key 44 is pushed down as indicated by the arrow.

FIG. 10 is a block diagram of a computer that automatically controls the components described in FIGS. The computer 51 includes an interface circuit 52 that forms an input / output interface for the automatic wiring board 7 that inputs / outputs signals to / from the operation panel 4 to be inspected through the contact pins 38 (see FIG. 7), and the inspection program stored in the ROM 62. CPU61 which executes arithmetic processing according to and controls each circuit
And a signal from and to the interface circuit 52 based on a command from the processor circuit 53, and outputs a warning signal or the like to the display unit 55, and each cylinder 13 (see FIG. 9). An excitation signal is output to the solenoid valve 12 of and the first and second air cylinders 38, 10 (see FIGS. 1 and 4)
A sequencer 56 that outputs an excitation signal to the solenoid valve and a control circuit 54 that transmits and receives the signal. Further, a high-voltage reed relay 58 for switching the connection between the automatic wiring board 7 and the interface circuit 52 to the withstand voltage meter 57 side by a control signal from the control circuit 54 and a panel meter 59 for measuring the consumed current are provided, and the operation panel 4 A power supply circuit (not shown) is provided.

The interface circuit 52 includes output parts such as a relay output that is a free contact at both ends, a resistance output that is a programmable resistance that is free at both ends, a weight sensor that outputs an oscillation / piezoelectric signal, and an AC output. Equipped with input parts for voltage input, DC voltage input, etc. The processor circuit 53 consists of a CPU 61, a total of 16 KB ROM 62, and a total of 48
It has a KB RAM 63, an LSI 64 for data communication with a host computer, and a backup power supply 65. The control circuit 54 is the interface circuit 52.
And a lamp drive that outputs a lighting command signal to the display unit 55 according to the inspection result of the operation panel 4, an excitation signal generation unit, an input / output control unit with the sequencer 56, and the like.

The operation of the operation panel automatic inspection device having the above configuration will be described below.

As shown in FIG. 1, after the operation panel 4 to be inspected is set on the holder 2 of the intermediate plate 3 in the case 1, the computer 51 (see FIG. 10) is activated. Then, the sequence control signal from the computer 51 causes the second
The air cylinder 10 moves forward, the elevating frame 9 descends, the cylinder board 11 is pressed against the surface of the operation panel 4, and the operation panel 4 is gripped. Next, the first air cylinder 25 (see FIG. 4) is moved forward by the sequence control signal from the computer 51, and the movable table 5 is raised. Then, the moving table 5
The automatic wiring board 7 placed on the upper side via the floating mechanism 8 (see FIG. 5) approaches the back surface of the operation panel 4 set in the upper holder 2, and the pair of guide pins 36 on the front surface operate. Fit in a pair of alignment holes in the panel (see Figure 7). As a result, the automatic wiring board 7 slightly moves within the plane of the moving base so that the contact pins 38 on the front surface are aligned with the corresponding signal pins 40 of the connector 39 (see FIG. 7) protruding from the rear surface of the operation panel on the vertical line. , The installation error is absorbed and the approach continues. When the automatic wiring board 7 is pressed against the back surface of the operation panel 4 as shown in FIG. 2, the tips 38a of the contact pins 38 (see FIG. 8).
Is pressed against the signal pin 40 by the urging force of the spring 43, and is electrically and reliably connected.

Next, the solenoid valve 12 is sequentially operated by a sequence control signal from the computer 51, and the air passing through the solenoid valve 12 drives the cylinder 13 of the cylinder board 11 to produce the cooking key 44 (FIG. 9) on the surface of the operation panel 4. (See) are sequentially pressed. Then, the signal by pressing the key is input to the computer 51 from the signal pin 40 through the contact pin 38 and the signal line 42 (see FIG. 3), and the computer 51 stores the ROM 62 in the ROM 62.
According to the inspection program stored in (see FIG. 10), it is determined based on this signal whether the operation panel 4 functions normally, and the GO lamp or the NG lamp of the display unit 55 is turned on according to the result. Thus, when the inspection is completed, the solenoid valve
12, the movable table 5 and the elevating frame 9 return to their original standby positions, and the automatic wiring board 7 and the cylinder board 11 separate from the operation panel 4.

In the above-described embodiment, not only the automatic wiring board 7 but also the cylinder board 11 is driven up and down, so that there is an advantage that the operation panel 4 can be set more easily.

The driving means is the first and second air cylinders 25, 1 of the embodiment.
The floating means is not limited to 0, and is not limited to that shown in FIG.

Needless to say, the present invention is not limited to the illustrated embodiment.

<Effects of the Invention> As is clear from the above description, the operation panel automatic inspection device of the present invention is driven by air passing through a solenoid valve on the front surface side of the operation panel that is the inspection target set in the device. While a cylinder board having a cylinder that presses the key is arranged, a movable table that can be reciprocated by a driving means is provided on the back side, and a contact pin that can be electrically connected to a signal pin of the operation panel is provided. The automatic wiring board is mounted on the movable table via the mounting error absorbing means, and the computer controls the driving means and the cylinder according to the inspection program to judge whether the function of the operation panel is acceptable or not based on the signal from the contact pin. Since it is done so, it absorbs the mounting error of the automatic wiring board to the moving base and makes the contact pin the signal pin of the operation panel. Since they can be aligned in a straight line and the operation panel can be inspected fully automatically without manual operation, mistakes and oversights due to manual operation are eliminated, and inspection can be performed reliably and quickly.

[Brief description of drawings]

1 and 2 are schematic views showing one embodiment of the operation panel automatic inspection device of the present invention, FIG. 3 is a perspective view showing the positional relationship of each member of the above embodiment, and FIG. 4 is FIG. 5 and 6 are detailed views of the moving table of FIG. 1, FIG. 6 is a detailed view of the floating mechanism of FIG. 1, FIG. 7 is a perspective view showing the connection relationship between the operation panel and the automatic wiring board, and FIG. 8 is a contact pin block. Fig. 9 is a detailed view, Fig. 9 is a perspective view showing the positional relationship between the operation panel and the cylinder board, and Fig. 10 is a block diagram of the computer.
The figure is a diagram showing a conventional operation panel inspection method. 1 ... Case, 2 ... Holder, 4 ... Operation panel, 5 ... Moving base, 7 ... Automatic wiring board, 8 ... Floating mechanism, 9 ... Lifting frame, 10 ... Second air cylinder, 11 ...... Cylinder board, 12 ...... Solenoid valve, 13 ...... Cylinder, 25 ...... First air cylinder, 51 ...... Computer.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A 2-165068 (JP, A) JP-A 64-9374 (JP, A) JP-A 55-148496 (JP, A) Actual development Sho-60- 53066 (JP, U) Special table Sho 58-501670 (JP, A)

Claims (1)

(57) [Claims] 1. An operation panel automatic inspection device for automatically inspecting a finished product of an operation panel, which is a control information input unit of an electric device, and which comes into contact with and separates from the back surface of the operation panel set in the device. A moving table that can be reciprocated by a driving means,
It is mounted on this moving table via floating means that allows fine movement within the table surface, has guide pins that fit into the alignment holes of the operation panel on the front surface, and the tip projects from the back surface of the operation panel. An automatic wiring board having a contact pin that is electrically connectable to a signal pin of a connector, has a base end connected to a signal line, and has a contact pin that is slidably projected by being biased in a distal direction by a spring, and the operation panel. A cylinder board having a cylinder arranged on the surface side of the cylinder for driving the keys of the operation panel driven by air passing through the solenoid valve, and a sequence control signal to the drive means of the movable table and the solenoid valve of the cylinder according to the inspection program. And whether or not the operation panel functions normally based on the signal from the signal line of the contact pin, and outputs a pass / fail signal. Operation panel automatic inspection apparatus having a computer that.