JPH0795086B2 - Energization mechanism in electrical test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an electrical test of a device under test having electrodes on the upper and lower ends thereof, and an electrical test for testing the electrical characteristics of the device under test. The present invention relates to a power supply mechanism in a test device.

(Prior Art) Conventionally, for example, a zinc oxide lightning arrester using zinc oxide (ZnO) as a characteristic element has been used as an object to be tested that is provided with electrodes on both upper and lower ends and is subjected to an electric current test. And as a test for product inspection of this lightning arrester, insulation resistance test,
Electrical energization tests such as discharge withstand test and varistor voltage test are conducted. The outline of each test content is described below.

(1) Insulation resistance test: A voltage of 1000 V is applied to the zinc oxide lightning arrester, and the insulation resistance value is measured with an insulation resistance meter.
At this time, if the measured value is 2000 MΩ or more, it is judged to be acceptable, and if it is 2000 MΩ or less, it is judged to be unacceptable.

(2) Discharge withstanding test: A predetermined lightning impulse large current to the zinc oxide lightning arrester, for example, current value 6KA, waveform 4 × 10 μs
Energize (wave front 4 μs, wave tail 10 μs). At this time, if there is no disturbance in the waveform, it is judged as pass, and if there is any disturbance, it is judged as fail.

(3) Varistor voltage test (operation start voltage test): Apply a commercial frequency voltage to the zinc oxide lightning arrester, and measure the voltage when the resistance current peak value of the lightning arrester becomes 1 mA.
At this time, if the measured value is in the range of 6.7 KV to 8.0 KV, it is judged as pass, and if it is outside the above range, it is judged as fail. However, even if the voltage is within the above range, an unstable voltage indication is determined as a failure.

Thus, when the zinc oxide lightning arrester was completed, the above-mentioned tests were carried out. At this time, the test worker mounted the lightning arrester directly on the current-carrying part of each test, evacuated to ensure safety from the use of high voltage, and then energized the lightning arrester. Then, based on the obtained test results, it was judged whether the arrester was a product or not, and the arrester for which the test had been completed was directly removed from the energized portion.

(Problems to be Solved by the Invention) However, in the above-described conventional test method, mounting of a device under test equipped with electrodes at the upper and lower ends of a lightning arrester, etc., to a test device,
Not only is it inefficient because it requires work steps such as evacuation of the test operator, energization of the DUT, and removal of the DUT, it is not only efficient, but also the test operator is electrocuted when the DUT is attached to or detached from the energized part. There were many risks such as accidents.

An object of the present invention is an object to be tested having electrodes on both upper and lower ends,
For example, it is an object of the present invention to provide an energization mechanism in an electric test device that improves the efficiency of the work process of a product such as a lightning arrester and is safe for the test operator.

Structure of the Invention (Means for Solving Problems) This invention is a device under test J having electrodes 15A and 15B at both upper and lower ends.
In the electrical test apparatus of, the supporting member and the upper and lower supporting arms horizontally cantilevered at both upper and lower ends of the supporting member, which are attached to the conveying mechanism operated along a predetermined locus by the driving mechanism, A supporting frame having an insulating property formed in a side surface shape; an upper gripping electrode provided at the tip of the upper supporting arm and having a locking hole on the lower surface for engaging the upper end electrode of the lightning arrester; A lower gripping electrode, which is supported at the tip of the lower support arm so as to be capable of reciprocating in the vertical direction so as to correspond to the upper gripping electrode, and has a lower gripping electrode for engaging the lower end electrode of the lightning arrester at the upper end, and the lower gripping electrode. A plurality of sets of gripping mechanisms H, each of which is composed of a spring for urging the gripping mechanism to an upper gripping position, detachably grips the upper and lower electrodes of the DUT; , 3B, 4A ~ 4C, the upper and lower gripping electrodes
The upper and lower fixed electrodes 28A and 28B which are in temporary contact with the electrodes 13A and 13B and are electrically connected to the electrodes 15A and 15B at the upper and lower ends of the device under test J through the upper and lower gripping electrodes 13A and 13B, respectively. The configuration is adopted.

(Operation) By adopting the above configuration, the present invention operates as follows.

That is, when the pair of upper and lower gripping electrodes of the gripping mechanism grip the electrodes on the upper and lower ends of the DUT, respectively, and the transport mechanism is operated by the drive mechanism, the gripping mechanism transports the DUT along a predetermined path while gripping the DUT. To be done.

At this time, the electrodes at the upper and lower ends of the DUT held by the gripping mechanism are electrically connected to the pair of upper and lower fixed electrodes installed at the positions corresponding to the transport path of the gripping mechanism through the pair of upper and lower gripping electrodes. Connected to. Then, in this contact state, a predetermined device connected to each fixed electrode is operated,
Power is supplied to the DUT.

(Embodiment) An embodiment in which the present invention is embodied in an automatic testing device for a zinc oxide lightning arrester will be described with reference to FIGS.

Reference numeral 1 in FIGS. 1 and 2 denotes a test apparatus mechanical section, and the mechanical section 1 schematically shows a base 2, a drive mechanism D mounted on an upper portion of the base 2, and a drive mechanism D. The transport mechanism C mounted on the upper portion, the gripping mechanism H mounted on the transport mechanism C, and the main part of the present invention, which are erected on the upper surface of the base 2 outside the transport mechanism C, Further, a supporting means composed of three sets of frames 4A to 4C horizontally and cantilevered by a pair of upper and lower pairs of electrode supporting arms 3A and 3B, and also the main part of the present invention. The voltage application section f1 of the mounted first pre-charging device F1 and the second pre-charging device
Voltage application part f2 of F2, resistance detection part r1 of the first insulation resistance test device R1, energization part ti of discharge withstanding capacity test device T1, resistance detection part r2 of the second insulation resistance test device R2, and varistor voltage test It is composed of the voltage application unit bv of the device BV.

Therefore, the above-mentioned mechanisms will be sequentially described in detail.

First, the transport mechanism C and the drive mechanism D will be described with reference to FIGS. 1 and 2. Reference numeral 5 is a support frame that is vertically fixed to the base 2, and a drive motor having a brake mechanism built in the upper portion thereof. A drive mechanism D including a motor 6 is attached to the drive mechanism D, and the motor 6 is operated for a predetermined time (for example, 7.
The indexing confirmation microswitch 7 for intermittently controlling the stop for 5 seconds and the drive for a predetermined time (for example, 2.5 seconds) is connected.

Further, a transport mechanism C rotated by the drive mechanism D is installed above the drive mechanism D.

The transport mechanism C will be described. 8 is a circular rotary substrate, and 9 is a plurality of bolts which are fixed to the outer edge of the substrate 8 at equal intervals as shown in FIGS. Then
16 sets of supporting members, 10 are circular lid plates placed and fixed on the upper portions of the respective supporting members 9, and these members constitute the transport mechanism C, and the center of the lid plate 10 is shown in FIG. It is possible to rotate in the direction of the arrow P around O.

Next, the gripping mechanism H mounted on each supporting member 9 of the transport mechanism C will be described with reference to FIGS.

Reference numerals 11A and 11B denote upper and lower support arms made of an insulating material, which are fastened and fixed to the upper and lower end portions of each support member 9 by bolts, respectively. 12P, which are arranged in a plane radial pattern as a whole as shown in FIG.

In this embodiment, the stop positions of the support frames 12A to 12P shown in FIG. 1 are the first station ST1 to the sixteenth station ST16, respectively.

13A is a hole 11a formed at the tip of each upper support arm 11A.
The upper gripping electrode is a cylindrical upper gripping electrode that is vertically inserted into the upper end of the upper support arm 11A. The upper end of the electrode is fitted to a donut-shaped ring member 14A fixed to the tip of the upper support arm 11A, and is fastened with a screw. On the lower surface of the upper gripping electrode 13A, a locking hole 13a for fitting the electrode 15A at the upper end of the lightning arrester J, which is the DUT, is formed. Reference numeral 16 denotes a substantially semi-cylindrical locking plate fixed to the back surface (right side in FIG. 4) of the lower end of the upper gripping electrode 13A. When the lightning arrester J is mounted, the upper end of the lightning arrester J is abutted to engage the upper electrode 15A. It is easy to fit into the stop hole 13a.

13B is a rod-shaped lower gripping electrode slidably inserted in a hole 11b formed at the tip of the lower support arm 11B so as to correspond to the upper gripping electrode 13A, and has a short circle at its upper end. A columnar receiving member 17 is attached, and a locking hole 17a for locking the electrode 15B at the lower end of the lightning arrester J is formed on the upper surface of the receiving member 17. Further, the catch 1 having a sectional shape is provided in the locking hole 17a.
7b is fitted. Reference numeral 18 denotes a spring wound around the upper half of the lower gripping electrode 13B and interposed between the lower surface of the receiving member 17 and the upper surface of the lower support arm 11B, and biases the lower gripping electrode 13B upward. is doing. 14B and 14C are ring members fitted to the lower ends of the lower gripping electrodes 13B and fastened with screws, and are separated by a predetermined gap G. The upper ring member 14B grips the arrester J. If not, it contacts the lower surface of the lower support arm 11B and regulates the upper limit position of the lower gripping electrode 13B. The above is the configuration description of the gripping mechanism H.

As shown in FIGS. 4 and 5, 19 is a bolt 20a and a nut 20 on the upper surface of the tip of the lower support arm 11B near the lower gripping electrode 13B.
Lightning arrester J made of T-shaped conductive metal clamped at b
When the lower gripping electrode 13B moves downward, the lower part of the arrester J is pushed forward so that the arrester J falls forward. 21 has one end connected to the head of the bolt 20a and the other end to the ring member 14B.
Which is a lead wire connected by means of, and electrically connects the guide pin 19 and the ring member 14B.

23A to 23D are 16 stations ST1 as shown in Figs.
~ 16 of four L-shaped holding arms 24A to 24D projecting laterally from the support frame 5 so as to correspond to the four stations 1,2,15,16, respectively. On the other hand, the first to fourth air cylinders fixed upward, and as shown in FIG.
A donut-shaped engagement plate 23b is fixed to the upper end of the. The ring members 14B and 14C fixed to the lower gripping electrode 13B of the gripping mechanism H are connected to the stations ST1, ST2 and ST1.
5, when the movement is stopped at ST16, the engaging plate 23
b is designed to enter slowly.

The air cylinders 23A to 23D are respectively connected to electromagnetic valves (not shown) for controlling the raising / lowering operation of the engagement plate 23b, and further, the engagement valves 23b corresponding to the upper and lower positions of the engagement plate 23b. Upper and lower confirmation limit switches (not shown) for confirming the upper and lower positions of the lifting operation of the plywood 23b are connected.

Foot switches FS1 and FS2 are connected to the solenoid valves of the first and second air cylinders 23A and 23B, respectively, and a pair of carry-in portions C1 and C1 are configured by these. In addition, the defective and non-defective product discharge chutes 25A and 25B supported by the third and fourth air cylinders 23C and 23D, the carry-out guide pin 19 and the support leg 26 shown in FIG. Carrying out section C
2, C3 is composed.

The solenoid valves of the third and fourth air cylinders 23C and 23D are controlled by signals from an operation control unit 27 described later.

Next, the configuration of the voltage applying unit f1 of the first pre-charging device F1 is changed to the sixth,
Explaining FIG. 7, 28A and 28B are upper and cross-sectional shapes of elastic conductive plates tightened with bolts so as to face each other with respect to the tips of the upper electrode supporting arm 3A and the lower gripping electrode supporting arm 3B, respectively. As the lower fixed electrode, the upper surface of the upper gripping electrode 13A is in sliding contact with the lower surface of the upper fixed electrode 28A, and the lower end surface of the lower gripping electrode 13B is in sliding contact with the upper surface of the lower fixed electrode 28B. 29 and 29 are lead wires connected to the upper and lower fixed electrodes 28A and 28B, respectively,
The other ends thereof are connected to a first pre-charging device F1 not shown.

The voltage application unit f2 of the second pre-charge device F2, the resistance detection unit r1 of the first insulation resistance test device R1, and the second insulation resistance test device R2
The resistance detecting unit r2 and the voltage applying unit bv of the varistor voltage testing device BV have the same configurations as the voltage applying unit f1 of the first pre-charging device F1, respectively, and thus the description of the configurations will be omitted. .

LS1 is a first limit switch for confirming the presence or absence of the lightning arrester J attached to the side portion of the frame 4A.
A thin contactor 31 is horizontally supported by a cantilever, and the tip of the contactor 31 can contact the arrester J held by the holding mechanism H. When the lightning arrester J comes into contact with the lightning arrester J, the lightning arrester J is horizontally rotated about the rotation support shaft 30 to confirm the existence of the lightning arrester J.

A second limit switch LS2, which has the same purpose as the first limit switch LS1 and is constructed in the same manner, is a frame 4B of the energization part ti of the discharge withstand test apparatus TI as shown in FIG.
The third limit switch LS3 is a varistor voltage tester B
It is provided in each of the frames 4C of the V voltage application section bv. These limit switches LS1 to LS3 are connected to a central processing unit CPU32 described later (see FIG. 13).

Next, the structure of the current-carrying portion ti of the discharge withstanding capacity test apparatus TI will be described with reference to FIGS. 8 and 9. 33 and 33 are the upper and lower parts attached to the tip parts of the upper and lower electrode supporting arms 3A and 3B. The electrode mounting member is composed of a mounting plate 33a and a cylindrical body 33b vertically fitted in a hole provided in the plate 33a. 34,
The base end of 34 is welded to both upper and lower fixed electrodes 28A and 28B, and
Upper and lower mounting bars slidably inserted into 3b and 33b. The upper and lower fixed electrodes 28A and 28B are attached to the upper and lower electrode mounting members 33 and 33 by bolts 35a and nuts 35b, respectively. 36 is wound around the bolt 35a and faces the upper fixed electrode 28A and the upper electrode mounting member 33, and the lower fixed electrode 28A.
The springs are respectively interposed on the opposing surfaces of B and the lower electrode attachment member 33, and urge the upper and lower fixed electrodes 28A, 28B in the direction of approaching each other. 37 and 37 are terminal plates that are fastened to the side surfaces of the upper fixed electrode 28A and the lower fixed electrode 28B, and lead wires 29 and 29 are connected to the same plate 37 and 37 and connected to the discharge withstand tester TI. ing.

Next, the configuration of automatic control of the test apparatus mechanism section 1 will be described with reference to FIG.

A central processing unit CPU 32 includes a read-only memory ROM 38 and a read / write memory RAM 39.
Are connected, and the display 40 and the printer 41 are connected. The CPU 32 includes a first pre-charging device F1 including a voltage applying part f1, a second pre-charging device F2 including a voltage applying part f2, a first insulation resistance test device R1 including a resistance detecting part r1, and a conducting part ti. And a second insulation resistance testing device R2 including a resistance detecting part r2, and a varistor voltage testing device BV including a voltage applying part bv.

27 is an operation control unit connected to the CPU 32. The operation control unit 27 is an air cylinder that constitutes a drive mechanism D with an indexing confirmation microswitch 7 and a defective product unloading unit C2.
The solenoid valve (not shown) of 23C and the solenoid valve (not shown) of the air cylinder 23D that constitutes the good product unloading section C3 are respectively connected, and the operation of the good and defective product unloading sections C2, C3 is automatically controlled. There is.

Next, the operation of the zinc oxide lightning arrester automatic test apparatus configured as described above will be described.

First, the power of the automatic test apparatus is turned on, the drive mechanism D is operated, and the transport mechanism C is brought into an intermittent revolving motion state. At this time, when the indexing confirmation micro switch 7 starts indexing and is turned on, the drive motor 6 of the drive mechanism D
Is started, and the transport mechanism C starts the orbital movement by the rotation of the substrate 8. The drive motor 6 has been started for a predetermined time (2.
5 seconds later, the indexing confirmation micro switch 7 finishes the indexing and turns off, and at the same time, the drive motor 6 is stopped by the built-in brake mechanism, and the orbiting movement of the transport mechanism C takes a predetermined time (7.5 seconds). It will be stopped.

In this way, the transport mechanism C performs an intermittent orbital motion by the intermittent operation of the drive motor 6 (operation for 2.5 seconds, stop for 7.5 seconds).

Next, in order to perform various tests of the lightning arrester J, the transport mechanism C is stopped, and, for example, in a state where the support frame 12A shown in FIG. 1 is stopped at the first station ST1, the foot switch FS1
To operate. Then, a solenoid valve (not shown) is actuated, the piston rod 23a of the first air cylinder 23A is lowered, and the ring member 1 at the lower end of the lower gripping electrode 13B that constitutes the gripping mechanism H.
The ring member 14C is moved downward by the engaging plate 23c entering the gap G between 4B and 14C, and the lower holding electrode 13B is moved downward against the spring force of the spring 18. The lowering operation of the piston rod 23a is automatically stopped at the lowermost position by the operation of a lower end confirmation limit switch (not shown).

Here, the arrester J is attached to the gripping mechanism H, and this attachment is performed as follows. For example, the operator holds the lightning arrester J by hand, places the lower end electrode 15B of the lightning arrester J on the pan 17b, and releases the operation of the foot switch FS1. Then, the solenoid valve (not shown) is actuated, and the first air cylinder 23
The piston rod of A is raised, and the lower gripping electrode 13B is raised by the urging force of the spring 18. Then, when the lower gripping electrode 15B is raised to a position where the lower end outer peripheral tapered surface of the lightning arrester J does not interfere with the upper end portion of the guide pin 19, the lightning arrester J is set in the vertical state and the lower end electrode 15B is fitted to the saucer 17b. When the lower gripping electrode 13B reaches the uppermost end in this state, the upper end electrode 15A of the lightning arrester J is engaged with the locking hole of the gripping electrode 13A.
The lightning arrester J is attached to the gripping mechanism H by being inserted into 13a.

Alternatively, the operator holds the lightning arrester J vertically and sets the top electrode 15
It can be mounted even if the lower gripping electrode 13B stands by until the lower gripping electrode 13B rises to a predetermined position in a state where A is fitted in the locking hole 13a of the gripping electrode 13A.

Although various work procedures for mounting the lightning arrester J are conceivable, this work procedure is not the gist of the present application, and any means can be used as long as the work procedure can be mounted.

The support frame 12A ends the stopped state when a predetermined time (7.5 seconds) elapses, and the center O shown in FIG. 1 is reached at a predetermined time (2.5 seconds).
Is rotated clockwise (in the direction of arrow P) at a predetermined angle (22.5 degrees) intermittently (the same applies hereinafter), and then moves to and stops at the second station ST2 corresponding to the second air cylinder 23B. .

Also in the second station ST2, the arrester J can be held by the foot switch FS2 with respect to the support frame 12A by the same operation as the operation described in the first station ST1. For example, in the station ST1, the arrester J can be held. It can be used when it is too late for work or when the lightning arrester J is held at the first and second stations ST1 and ST2 at the same time.

The support frame 12A moves to the third station ST3 in 2.5 seconds after 7.5 seconds have passed, and then stops in the third station ST3 for 7.5 seconds and then moves to the fourth station ST4 in 2.5 seconds.

During the movement, the arrester J gripped by the support frame 12A comes into contact with the contact 31 of the first limit switch LS1 just before the fourth station ST4, and the limit switch LS1 is activated.
Then, a product confirmation signal is transmitted from the limit switch LS1 to the CPU 32, and the CPU 32 sequentially reads the first pre-charging device operation program, the second pre-charging device operation program, and the first insulation resistance test operation program that are input in advance in the ROM 38. To do.

Then, when the support frame 12A is stopped at the fourth station ST4, as shown in FIGS. 6 and 7, the main part of the present invention, that is, the first pre-charge device voltage applying part which is one of the energizing mechanisms.
The upper end of the upper gripping electrode 13A automatically contacts the lower surface of the upper fixed electrode 28A of f1 and the lower end of the lower gripping electrode 13B automatically contacts the upper surface of the lower fixed electrode 28B.
A and 15B are fixed upper and lower electrodes 28A and
It is electrically connected to 28B. At this time, when a drive stop signal is transmitted from the indexing confirmation micro switch 7 of the drive mechanism D to the CPU 32 through the operation control unit 27, the CPU 32 causes the first pre-charge device F1 to execute the first pre-charge device operation program. Based on this, an operation signal is transmitted to operate the first pre-charging device F1. A voltage is applied to the lightning arrester J gripped by the gripping mechanism H through both the upper and lower fixed electrodes 28A and 28B of the voltage application part f1 of the first pre-charging device F1, and preliminary charging for performing the first insulation resistance test is performed. Is done.

After the supporting frame 12A has stopped for 7.5 seconds, it moves to the fifth station ST5 in 2.5 seconds and then stops.
Similarly, the upper and lower fixed electrodes 28A and 28B of the voltage applying section f2 and the upper and lower gripping electrodes 13A and 13B of the support frame 12A are in contact with each other. At this time, the indexing confirmation micro switch 7 to CPU3
The drive stop signal is transmitted to 2, and the CPU 32 transmits the operation signal to the second pre-charging device F2 based on the second pre-charging device operating program already read from the ROM 38, and the lightning arrester J
A voltage is applied to and pre-charge is performed again.

The support frame 12A stops at the fifth station ST5 for 7.5 seconds and then moves to the sixth station ST6 in 2.5 seconds.

When the support frame 12A is stopped at the sixth station ST6, the upper and lower fixed electrodes 28A, 28A of the resistance detection unit r1 of the first insulation resistance test device R1
28B and the upper and lower gripping electrodes 13A and 13B of the support frame 12A automatically contact each other. At this time, a drive stop signal is transmitted from the indexing confirmation micro switch 7 to the CPU 32, and the CPU 32 sends an operation signal to the first insulation resistance test device R1 based on the first insulation resistance test operation program already read by the ROM 38. Transmit and activate the first insulation resistance tester R1. A voltage of 1000V is applied to the lightning arrester J through the upper and lower fixed electrodes 28A and 28B, and the insulation resistance value is measured. The measurement value signal at this time is transmitted to the CPU 32.

If the measured value signal is 2000 MΩ or more, the CPU 32 determines that the result is acceptable, and stores a non-defective item determination signal in the RAM 39. Also, 2000 MΩ
If it is below, it is determined to be unacceptable, and later, in the fifteenth station ST15, the lightning arrester J gripped by the supporting frame 12A is used as a defective product determination signal for removing the defective lightning device J by the defective product unloading section C2.
Store in M39.

After the support frame 12A stops at the sixth station ST6 for 7.5 seconds, it moves to the seventh station ST7 in 2.5 seconds, where 7.
After stopping for 5 seconds, move to 8th station ST8 in 2.5 seconds.

The lightning arrester J of the support frame 12A comes into contact with the contact 31 of the second limit switch LS2 immediately before the eighth station ST8, the limit switch LS2 is actuated, and the product confirmation signal is transmitted to the CPU32. Reads out the discharge withstand voltage test operation program and the second insulation resistance test operation program which are input in advance in the ROM 38.

When the support frame 12A stops at the 8th station ST8, the 8th, 9th
As shown in the figure, the upper end of the upper gripping electrode 13A automatically contacts the lower surface of the upper fixed electrode 28A, and the lower end of the lower gripping electrode 13B automatically contacts the upper surface of the lower fixed electrode 28B. Similarly, upper and lower electrodes 15A and 15B of lightning arrester J
Is electrically connected to the upper and lower fixed electrodes 28A and 28B. Since the upper and lower fixed electrodes 28A and 28B are provided with the springs 36, respectively, the contact with the end portions of the upper and lower gripping electrodes 13A and 13B is surely performed, and the impact at the time of contact is reduced.

At this time, the micro switch 7 for confirming that the drive mechanism D is being indexed
When the drive stop signal is transmitted to the CPU 32 through the operation control unit 27, the CPU 32 transmits an operation signal to the discharge withstanding capacity testing device TI based on the read discharge withstanding capacity testing operation program, and the discharge withstanding capacity testing device. Activate TI.
6KA, 4 × 10μ through the top and bottom fixed electrodes 28A, 28B to the arrester J
A lightning impulse of s waveform is applied, and the waveform at that time is detected. The measured value signal showing the detected waveform at this time is CPU3
Transmitted to 2.

If there is no disturbance in the waveform of the measurement value signal, the CPU 32 determines that the result is acceptable and stores the same non-defective item determination signal in the RAM 39. or,
If there is a disturbance in the waveform, it is judged as a failure, and later this support frame 12
The defective product determination signal for removing the arrester J supported by A at the 15th station ST15 is stored in the RAM 39.

The support frame 12A stops at the eighth station ST8 for 7.5 seconds and then moves to the ninth station ST9 in 2.5 seconds. After that,
Through the same process, the tenth station ST10 and the eleventh station ST11 are intermittently moved from the ninth station ST9 to the twelfth station ST12.

When the support frame 12A stops at the twelfth station ST12, the second
Insulation resistance tester R2 resistance detection part r2 upper and lower fixed electrodes 28
A and 28B and the upper and lower gripping electrodes 13A and 13B of the support frame 12A automatically contact each other. At this time, a drive stop signal is sent from the operation confirmation section 27 by the micro switch 7 for confirming that the drive mechanism D is indexing.
Via the first insulation resistance test operation program already read, the CPU 32 transmits an operation signal to the second insulation resistance test apparatus R2 and sends the operation signal to the second insulation resistance test apparatus R2.
To operate. A voltage of 1000V is applied to the lightning arrester J through the upper and lower fixed electrodes 28A and 28B, and the insulation resistance value is measured. The measurement value signal at this time is transmitted to the CPU 32.

If the measured value signal is 2000 MΩ or more, the CPU 32 determines that the result is acceptable, and stores a non-defective item determination signal in the RAM 39. Also, 2000 MΩ
If it is below, it is determined to be unacceptable, and a defective product determination signal for removing the lightning arrester J supported by the support frame 12A later in the fifteenth station ST15 is stored in the RAM 39.

The support frame 12A stops at the 12th station ST12 for 7.5 seconds, then moves to the 13th station ST13 in 2.5 seconds, and further,
Through the same process, it moves to the 14th station ST14.

The lightning arrester J of the support frame 12A comes into contact with the contactor 31 of the third limit switch LS3 immediately before the fourteenth station ST14, and when the limit switch LS3 operates, a product confirmation signal is sent to the CPU32, and the CPU32 preliminarily writes it to the ROM38. Read the input varistor voltage test operation program.

When the support frame 12A stops at the 14th station ST14, both the upper and lower fixed electrodes 28 of the voltage application part bv of the varistor voltage testing device BV are detected.
A and 28B and the upper and lower gripping electrodes 13A and 13B of the support frame 12A automatically contact each other. At this time, when the drive stop signal is transmitted from the indexing confirmation micro switch 7 to the CPU 32,
32 transmits an operation signal to the varistor voltage test device BV based on the varistor voltage test operation program to operate the test device BV. The lightning arrester J has the above-mentioned upper and lower fixed electrodes 28A, 28B.
A voltage is applied through and the voltage when a current of 1 mA flows is measured. The measurement value signal at this time is transmitted to the CPU 32.

If the measured value signal is within the range of 6.7 KV to 8.0 KV, the CPU 32 determines that the result is acceptable and stores the non-defective item determination signal in the RAM 39. Further, if the measured value signal is out of the range of 6.7 KV to 8.0 KV, it is determined as a failure, and the defective product determination signal removed at the 15th station is stored in the RAM 39.

Even if the measured value signal is within the above range, if the voltage indication is unstable, it is determined to be unacceptable, and the defective product determination signal is similarly stored in the RAM 39.

The support frame 12A stops at the 14th station ST14 for 7.5 seconds, then moves to the 15th station ST15 in 2.5 seconds, and when the support frame 12A stops, the drive stop signal of the indexing confirmation micro switch 7 is sent to the operation control unit 27. Through the CPU 32. At this time, CPU 32 is the same support frame already stored in RAM 39.
A plurality of non-defective product determination signals or defective product determination signals regarding the lightning arrester J of 12A are read out.

If at least one of the determination signals is a defective product determination signal, the CPU 32 causes the operation control unit 27 via the operation control unit 27 to fail to the solenoid valve (not shown) of the third air cylinder 23C of the defective product unloading unit C2. When a non-defective signal is transmitted, the third air cylinder
23C is activated and the piston rod 23a is moved downward.

At this time, as shown in FIG.
Stop at ST15, and the ring member 14B, 1 at the lower end of the lower gripping electrode 13B
The engagement plate 23b loosely entered into the gap G between the 4C pushes the ring member 14C downward as shown in FIG. 11 by the lowering of the piston rod 23a, and the lower gripping electrode 13B.
Together with the lightning arrester J, move downward against the elasticity of the spring 18. At the same time, in each of the tests already performed, the high-voltage electric charge applied inside the lightning arrester J flows to the ground side through the ring member 14B, the lower gripping electrode 13B, and the engaging plate 23b, and is removed.

When the lightning arrester J descends, the lower outer peripheral tapered surface of the lightning arrester J contacts the upper end of the guide pin 19. At this time, among the high-voltage charges applied to the arrester J, the charges remaining on the creeping surface of the arrester J are the guide pin 19, the lead wire 21, the ring member 14B, the lower gripping electrode 13B, the ring member 14C, or the engaging plate. 23b, the air cylinder 23C, etc. to flow to the ground side and be removed.

Then, when the piston rod 23a further descends, the upper end of the guide pin 19 presses the lower outer peripheral rear surface of the lightning arrester J, and the lightning arrester J is pressed forward, and as shown in FIG. . This lightning arrester J is then carried out to a predetermined place along the defective product carrying-out chute 25A.

By the way, each judgment signal calculated by the CPU 32 is
If all are good product determination signals, the CPU 32 outputs the same good product signal as R.
Store in AM39.

The support frame 12A stops at the fifteenth station ST15 for 7.5 seconds, then moves to the sixteenth station ST16 in 2.5 seconds, and this movement releases the engagement between the engagement plate 23b and the ring member 14C.
The lower gripping electrode 13B returns to the old state due to the elasticity of the spring 18, and when the support frame 12A stops here, a drive stop signal of the indexing confirmation microswitch 7 is transmitted to the CPU 32.
At this time, the CPU 32 reads the non-defective product signal stored in the RAM 39, transmits the operation signal from the operation control unit 27 to the non-defective product unloading unit C3, operates the fourth air cylinder 23D, and unloads the defective product in the 15th station ST15. With the same action as part C2, the arrester J that has passed all the test strokes is a non-defective discharge chute 25B.
And carry it to the designated place.

After that, the support frame 12A is stopped at the 16th station ST16 for 7.5 seconds, and then moved to the first station ST1 again in 2.5 seconds. By this movement, the lower gripping electrode 13B returns to the old state as described above, and the next arrester J again. Be prepared for the exam. The product test of the arrester J held by the other supporting frames 12B to 12P is also performed in the same manner as the above-mentioned process.

As described in detail above, a series of product tests of the arrester J held by the support frames 12A to 12P are all continuously and automatically performed, and the arrester and the good arrester that should be excluded as defective products are packed. The lightning arrestor to be used is automatically selected.

The measured value signal for each inspection item of each lightning arrester stored in the RAM 39 is displayed on the display 40 at a suitable time and printed by the printer 41.

The present invention can also be implemented as follows.

(1) Electrodes 15A at the upper and lower ends of the device under test such as lightning arrester J,
15B is directly inserted into the holes 11a and 11b of the upper and lower support arms 11A and 11B, and is gripped so as to be able to contact the upper and lower fixed electrodes 28A and 28B. In this case, it is assumed that the upper support arm 11A can be attached / detached such that the upper support arm 11A is attached so as to be vertically rotatable.

(2) The orbiting motion of the transport mechanism C is made continuous and at a low speed, and the upper and lower surfaces of the upper and lower fixed electrodes are lengthened to provide electrodes at the upper and lower ends of the device under test such as the lightning arrester J.
Be able to make electrical contact with 15A and 15B.

(3) Immediately after the defective product carry-out section C2, the first insulation resistance test apparatus resistance detection section r1, the discharge withstand test apparatus current conducting section ti, the second insulation resistance test apparatus resistance detection section r2, and the varistor voltage test apparatus voltage application section bv. Each of them should be installed to remove defective products.

(4) To embody each test independently in an electrical test device. In addition, the transport mechanism C should be configured so as to perform a reciprocating linear motion.

Effect of the Invention As described in detail above, in the present invention, in the electrical test of the DUT provided with the electrodes on the upper and lower ends, the electrodes on the upper and lower ends of the DUT correspond to the conveyance of the DUT, and Since it is automatically and reliably electrically connected to the fixed electrode of the current-carrying part,
The work effect is reduced, the test efficiency is improved, and the safety of the test operator is ensured.

[Brief description of drawings]

FIG. 1 is a plan view showing a test apparatus mechanism section of an embodiment of the present invention, FIG. 2 is a side sectional view showing the test apparatus mechanism section, and FIG. 3 is a gripping mechanism of the test apparatus mechanism section of the embodiment. FIG. 4 is a plan view, FIG. 4 is a vertical cross-sectional view of the central portion of FIG. 3, FIG. 5 is an enlarged view of the air cylinders of the carry-in section and the carry-out section of the defective or non-defective product, and FIG. FIG. 7 is a side view showing a voltage application section of the device, FIG. 7 is a sectional view taken along line XX of FIG. 6, FIG. 8 is a side view showing a current-carrying section of a lightning impulse, and FIG. 9 is YY of FIG. A line sectional view, FIGS. 10, 11, and 12 are side sectional views showing the progress of gripping of the arrester, and FIG. 13 is a block diagram showing a configuration of automatic control of the test apparatus. 1 ... Testing device mechanism, 3A (3B) ... Upper (lower) electrode support arm, 4A-4C ... Frame, 6 ... Drive motor, 7 ... Indexing confirmation microswitch, 9 ... Support member , 11A (11B) …… Upper (lower) support arm, 12A-12P
…… Support frame, 13A (13B) …… Upper (lower) gripping electrode, 14
A to 14C: Ring member, 15A (15B) ... Electrode, 17 ... Receiving member, 18 ... Spring, 19 ... Guide pin, 21 ... Lead wire, 23A to 23D ... Air cylinder, 23a ... Piston rod, 23b ... Engagement plate, 25A (25B) ... Carry-out chute for defective products (good products), 28A (28B) ... Upper (lower) fixed electrode, 31 ... Contact, 32 ... CPU, 33 ...... Electrode mounting member, 3
4 …… Mounting rod, 36 …… Spring, 38 …… ROM, 39 …… RA
M, 40 ... Display, 41 ... Printer, C ... Conveyance mechanism, D ... Driving mechanism, H ... Grip mechanism, J ... Lightning arrester, f1 (f2) ... First (second) pre-charging device Voltage application part, r1 (r2) ... 1st (second) insulation resistance test device resistance detection part, ti ... discharge withstand test device energizing part, bv ... varistor voltage test device voltage application part, C1 ... carry-in part , C2 (C3) ……
Defective (good) unloading section, LS1 to LS3 ... First to third limit switches, FS1, FS2 ... Foot switch, G ... Gap, ST1 to ST16 ... First to 16th stations.

Claims (4)

[Claims] 1. An electric test apparatus for a device under test (J) having electrodes (15A, 15B) at both upper and lower ends, wherein a transport mechanism (C) operated along a predetermined locus by a drive mechanism (D). The support member (9) attached and the upper and lower support arms (11A, 11B) horizontally cantilevered at both upper and lower ends of the support member (9) form a side U-shaped insulating property. With a support frame (12A to 12P) and a locking hole (13a) provided at the tip of the upper support arm (11A) and for engaging the upper end electrode (15A) of the lightning arrester (J) on the lower surface. ) Having an upper holding electrode (13A) and a lower end of the lower support arm (11B) supported so as to be vertically reciprocable corresponding to the upper holding electrode (13A), and has a lightning arrester (J ) Lower gripping electrode (13B) for engaging the lower end electrode (15B) of
A plurality of pairs of gripping mechanisms (H) for detachably gripping the upper and lower end electrodes (15A, 15B) of the device under test (J), which are composed of a spring (18) for urging the gripper to an upper gripping position; It is supported by supporting means (3A, 3B, 4A-4C) at a predetermined position corresponding to the orbit of the mechanism (H),
An upper part that is temporarily in contact with the upper and lower gripping electrodes (13A, 13B) and is electrically connected to the upper and lower end electrodes (15A, 15B) of the device under test (J) through the upper and lower gripping electrodes (13A, 13B). And a fixed electrode (28A, 28B) at the bottom, and an energizing mechanism in an electrical test apparatus, characterized by: 2. A lower support arm (11B) of a gripping mechanism (H).
Is provided with a guide pin (19) for tipping the device under test (J) forward by using the descending motion of the device under test (J) so as to be located near the lower gripping electrode (13B) An energization mechanism in the electric test apparatus according to claim 1. 3. The transfer mechanism (C) is configured to rotate intermittently, and a plurality of gripping mechanisms (H) are radially arranged on the outer peripheral portion of a substrate (8) constituting the mechanism (C). , The current-carrying mechanism in the electrical test device according to claim 1, which is attached at equal intervals. 4. A pair of upper and lower electrode support arms (3A, 28A) projecting from the fixed electrodes (28A, 28B) facing the gripping mechanism (H) with respect to a frame (4A to 4C) provided upright as supporting means. 3B)
The energizing mechanism in the electric test apparatus according to claim 1, which is attached to a tip portion of the.