JP3159064B2 - Withstand voltage test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called direct connection type plug having one end connected to an ignition plug in a plug hole formed in a cylinder head and the other end connected to an ignition coil in an internal combustion engine of an automobile or the like. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a withstand voltage test device for inspecting a leakage of a joint bush in a joint device.

[0002]

2. Description of the Related Art Conventionally, a plug joint device of this type includes a joint bush formed in a cylindrical shape from a material such as rubber or resin having an insulating property, and one end of a cylindrical terminal body is provided inside the joint bush. A joint terminal having a coil spring as a terminal spring connected to the side was inserted and mounted.

[0003] The plug joint device is inspected in advance to see if there is any leakage from the joint terminals to the outside due to cuts or breaks in the joint bush.
As the test device, there was one having a structure shown in FIGS.

That is, in the withstand voltage test apparatus 1, a bush mounting table 4 on which a joint bush 3 is mounted with its axis centered in the front-rear direction is arranged on one end side of the upper surface of the gantry 2 so as to be aligned in the left-right direction. Five sets are provided, and five sets of bush retainers 5 are supported on a support 6 so as to be vertically slidable in correspondence with the five sets of bush mounting tables 4. The bush presser 5 is configured to be integrally movable vertically. Each bush mounting table 4 and each bush holding member 5 constitute a grounding body.

Further, an insertion cylinder 9 is provided on the other end portion on the upper surface side of the gantry 2, and a slide base 11 slidably provided along a slide guide 10 fixed to the gantry 2 has bushings. High voltage application rods 12 are provided corresponding to the mounting table 4. The slide base 11 is configured to be movable along the slide guide 10 by the expansion and contraction operation of the insertion cylinder 9.

The gantry 2 is appropriately provided with an operation box 13, a control box 14, a high-pressure box 15, and the like.

In order to inspect the leakage, the joint bush 3 is mounted on each of the bush mounting tables 4 (the bush mounting step), and when the start switch 16 is pressed, the presser cylinder 7 is operated and each of the presser cylinders 7 is operated. The bush holding body 5 is lowered onto each bush mounting table 4 and each joint bush 3
Is held in place. In this state, the insertion cylinder 9 is operated to move each high voltage applying rod 12 to the joint bush 3 side. Thereafter, each high voltage applying rod 12 is inserted into each joint bush 3 by a predetermined amount. Is connected to the joint terminal of.

In this state, a high voltage is applied to each high voltage applying rod 12.
To detect whether a current flows to each bush mounting table 4 or each bush presser body 5 side as a grounding body. If no current flows, there is no leakage, it is determined that the product is good, and if a current flows, a leakage occurs. Is present and is determined to be defective, and the result of the determination is notified to the operator by an alarm such as a lamp (inspection step).

Thereafter, each of the high voltage applying rods 12 is retracted by the operation of the insertion cylinder 9, and each of the bush press bodies 5 is raised by the operation of the press cylinder 7. 3 may be taken out (a bush taking-out step).

[0010] Hereinafter, by repeating the same operation, the apparatus has been configured to sequentially test the withstand voltage of the joint bush 3 in lot units.

[0011]

However, according to the above conventional inspection apparatus, the bush mounting step, the inspection step, and the bush removal step are sequentially repeated.
If the operator mounts a plurality of joint bushes 3 on each bush mounting table 4 and operates the start switch of the withstand voltage test, the next operation is not performed until the withstand voltage test by the above operation is completed. Hand waiting time occurred during the test, resulting in waste of work.

In addition, it is necessary to use a bush mounting table 4 and a bush presser 5 having a shape corresponding to the joint bush 3 to be inspected. If the outer shape of the joint bush 3 to be inspected changes, the bush mounting table 4 is required. It is necessary to replace the bush holding body 5 with one having a corresponding shape.

In view of the above problems, it is an object of the present invention to provide a withstand voltage test apparatus that improves the working efficiency, and further provides a withstand voltage test apparatus that can be used for general-purpose equipment. The purpose is to:

[0014]

A technical means for achieving the above object is a withstand voltage test apparatus for inspecting an electric leakage of an insulating tubular joint bush, wherein the withstand voltage test apparatus is arranged in a vertical direction. A turntable that is rotated by a predetermined angle in a predetermined direction about an axis is provided.Along the rotation direction of the turntable, each of the joint bushes is provided on a plurality of bush sets provided in a protruding shape on the turntable. A set station to be mounted in a vertical orientation in a wrapped state, and a withstand voltage test station having a withstand voltage test mechanism for performing the inspection in a state where each joint bush mounted in the set station is mounted,
An extraction station having an extraction transport mechanism for extracting each joint bush after completion of the inspection at the withstand voltage test station from each bush set portion and sending it to the outside.

[0015] Further, between the set station and the withstand voltage test station, a structure may be provided in which a stand-by station for waiting each joint bush while being mounted at the set station is provided.

Further, each of the bush set portions has a vertically penetrating through hole, and the withstand voltage test mechanism is arranged so as to be able to move up and down freely. A high-voltage application rod inserted into the joint bush, and a grounding body disposed so as to be vertically movable and arranged on an outer peripheral surface side of each joint bush attached to each bush set by a descending operation. The structure may be as follows.

A drive source for raising and lowering each of the high-voltage applying rods is a motor cylinder, and the metal beads are arranged in an interdigitated manner so as to be disposed near the outer peripheral surface side of each joint bush. The structure may be made up of

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS.
The withstand voltage test apparatus 20 includes a turntable 23 having a substantially square shape in a plan view and rotatable around a vertical axis on a mounting plate 22 provided on a framed frame 21.

A table drive motor 24 is provided on the lower surface side of the mounting plate 22, and the turntable 23 is intermittently moved in a predetermined direction at a predetermined angle (every 90 degrees in the present embodiment) via a gear mechanism. It is controlled to perform a rotating operation.

A plurality of (every five in this embodiment) bush set portions 25 are provided on the periphery of the turntable 23 along the respective sides so as to protrude upward.

The rotation direction P of the turntable 23
A set station A in which the joint bush 26 is attached to the respective bush set portions 25 in a vertical position along the bush from the upper side.
A standby station B for holding each joint bush 26 in a state where the joint bush 26 is mounted, and the set station A
A withstand voltage test station C for inspecting for leakage while each of the joint bushes 26 mounted in the above is mounted, and an unloading station for taking out each of the joint bushes 26 after the inspection at the withstand voltage test station C from each of the bush set portions 25. D in sequence. Each of the stations A, B, C, and D has a structure arranged at four positions corresponding to each side of the turntable 23.

At the position of the set station A, a set detection sensor for detecting whether or not the joint bush 26 is mounted on a bush set portion 25 provided along a corresponding side of the turntable 23 is provided. Is provided with an area sensor 28 for detecting whether or not the user has finished mounting the joint bush 26 and has retreated from the work area.

That is, area sensors 28 including a light emitter and a light receiver are disposed on both sides of the open portion of the pedestal 21 on the worker side of the set station A, and if the area sensor 28 does not detect a worker, it is evacuated. Is determined to be.

If the set detection sensor detects the joint bush 26 and the area sensor 28 does not detect the worker, it is determined that the mounting work of the joint bush 26 has been completed, and the table drive motor 24 automatically turns off. It becomes a state where it can be driven. By driving the table drive motor 24, the turntable 23 is rotated 90 degrees in a predetermined direction, and the mounted joint bush 26 is moved to the standby station B.

At the standby station B, the mounted joint bushings 26 maintain their state, and simply stand by. The standby station B is also provided with a bush detection sensor for detecting whether or not the joint bush 26 is mounted on each of the bush sets 25 provided along a corresponding side of the turntable 23.

In the withstand voltage test station C, similarly to the standby station B, a bush detection for detecting whether or not the joint bush 26 is mounted on each bush set 25 provided along a corresponding side of the turntable 23. A sensor is provided and a withstand voltage test mechanism is provided. The withstand voltage test mechanism has a high voltage having an appropriate length inserted into each joint bush 26 as shown in FIGS. It has an application rod 30 and a grounding body 31 having an appropriate length disposed on the outer peripheral surface side of each joint bush 26.

When the bush detection sensor detects the joint bush 26, the withstand voltage test mechanism operates.

Each of the bush set portions 25 is made of an insulating material such as MC nylon. As shown in FIGS. 4 and 5, each of the bush set portions 25 has a through hole 25a vertically penetrating therethrough. It is detachably fastened and fixed to the side by bolts or the like. Further, the upper end of the bush set portion 25 is formed in a tapered shape having a small diameter in an upward direction as appropriate in order to facilitate mounting of the joint bush 26.

Each high voltage application rod 30 is disposed at a position below each through hole 25a of each bush set section 25, and each high voltage application rod 30 is attached to the lifting support plate 32 so as to protrude upward. ing.

The lifting support plate 32 is connected to the rod 33a of the motor cylinder 33 in which the rod 33a is extended and contracted by the rotation of the motor.
3 is attached and fixed to the gantry 21 side.

Then, the elevating support plate 32 is moved up and down by the expansion and contraction operation of the motor cylinder 33, and the elevating support plate 32
Each of the high voltage application rods 30 is configured to be moved up and down by the lifting operation.

A vertical guide rail is provided on the gantry 21 side, and the elevating support plate 32 is provided with a sliding body slidable along the guide rail, wherein the elevating support plate 32 is a guide rail. Is moved up and down in a detented state under the guidance of.

Each high voltage application rod 30 is connected to each other via a connection cord 35 from a high voltage box 34 provided with a high voltage generator for generating a high voltage by an ignition coil or the like in order to apply a high voltage. Have been.

Each of the grounding bodies 31 is connected to each of the joint bushes 2 mounted on each of the bush set portions 25 in a vertical position.
The grounding bodies 31 are attached to the lower surface side of the lifting support plate 37 in a hanging manner.

As shown in FIG. 3, an elevating cylinder 38 composed of an air cylinder or the like is mounted and fixed to the left and right positions on the side of the gantry 21 with the rod 38a as an upper side. Both ends of the support plate 37 are connected.

The lifting cylinders 38 are extended and retracted in synchronization with each other, and the lifting and lowering support plate 37 is moved up and down by this extending and retracting operation, and each grounding body 31 is moved up and down by the lifting and lowering operation of the lifting and lowering support plate 37. Have been.

Each of the grounding bodies 31 is interdigitated on a metal substrate 31a having a disk shape slightly larger than the outer diameter of the joint bush 26 at appropriate intervals along the circumferential direction. As shown in FIG. 5, when the elevating and lowering support plate 37 is moved downward, it is arranged near the outer peripheral surface side of each joint bush 26 as shown in FIG.

Further, the respective substrates 31a are connected to each other,
As shown in FIGS. 4 and 5, each of the grounding bodies 31 is grounded via a leakage detector 40. The leakage detector 4
0 denotes a current amplifier 42 for amplifying the current flowing from each grounding body 31 to the grounding portion 41, and a variable resistor 43 (0 to 1K) for converting the current amplified by the current amplifier 42 into a voltage.
Ω) and a display 44 for displaying the voltage converted by the variable resistor 43.
Deployed within.

Then, as shown in FIG. 5, the high voltage application rod 30 is inserted into the joint bush 26 through the through hole 25a of the bush set 25,
Is located near the outer peripheral surface side of the joint bush 26, and the voltage (about 30 kv
) Is applied to each high-voltage application rod 30 via the connection cord 35 for a predetermined time (for example, 5 seconds).

By this application, the earth portion 41 made of beads is drawn toward the joint bush 26 and positioned along the outer shape of the joint bush 26.

At this time, if no current flows to the side of each ground body 31, the leakage detector 40 does not detect any current, and each joint bush 26 is determined to be non-defective. If a current flows to one of the grounding bodies 31, the leakage detector 40
And it is determined that there is a defective joint bush 26.

The voltage from the ignition coil is released when a current flows through the leakage detector 40.

On the outer wall surface side of the withstand voltage test station C, as shown by a virtual line in FIG. 2, a safety cover 46 made of vinyl chloride or the like which can be freely opened and closed to partition the high voltage portion is provided. Also, a safety cover is appropriately provided on the inner side of the gantry 21 to partition the high voltage portion.

At the unloading station D, similarly to the withstand voltage test station C, a bush detection for detecting whether or not the joint bush 26 is mounted on each of the bush sets 25 provided along the corresponding side of the turntable 23. A sensor is provided and a take-out / transport mechanism is provided.
7, as shown in FIG. 7, a chuck transport mechanism 48 for taking out each joint bush 26 from each bush set section 25, and a delivery section 49 for receiving each joint bush 26 carried by the chuck transport mechanism 48 and sending it out. Is provided.

When the bush detection sensor detects the joint bush 26, the chuck transport mechanism 48 is operated.

The chuck transport mechanism 48 is supported by a mechanism support frame 50 provided at the position of the unloading station D so as to protrude laterally from the gantry 21. Is provided with a chuck body 51 having a pair of chuck portions 51a for releasably gripping each other.

Each chuck body 51 is arranged in parallel with each joint bush 26 and is attached to a support bracket body 52. Then, the support bracket body 52
Is connected to the rod 53a of the detent cylinder 53,
The main body of the locking cylinder 53 is attached to a base bracket 54.

The base bracket 54 is attached to the moving body 55a of the rodless cylinder 55,
5a is a pair of guide shafts 5 arranged side by side as shown in FIG.
A reciprocating movement operation is possible at a solid line position and a virtual line position along 5b.

The base bracket 54 and the support bracket body 52 are provided with a guide pin on one side and a guide cylinder for guiding the guide pin on the other side in order to regulate relative rotation.

At the initial position in the imaginary line position in FIG. 6, the chuck portion 51a of each chuck body 51 is in an expanded state. In this state, when the joint bush 26 is detected by the bush detection sensor. By the operation of the rodless cylinder 55, each chuck body 51 is moved forward to the turntable 23 side and moved to the chuck position indicated by the solid line position. At this time, each joint bush 26 is located between each chuck portion 51a.

Next, the chuck portion 51 of each chuck body 51
is closed, and each joint bush 26 is gripped by each chuck body 51. In this state, the detent cylinder 53
Is operated, each chuck body 51 is raised, and each joint bush 26 is connected to each bush set part 2.
It is taken out above 5.

Next, each chuck body 51 is moved backward by the operation of the rodless cylinder 55, and returned above the initial position. Thereafter, the detent cylinder 53 is actuated, each chuck body 51 is lowered, and returned to the initial position. Thereafter, each chuck portion 51a is opened and each joint bush 26 held by each chuck portion 51a is opened. Is dropped downward. Here, the chuck transport mechanism 48 is returned to the initial state.

The delivery section 49 includes a case 57 for receiving and housing the joint bush 26 dropped from the chuck transport mechanism 48, and a roller conveyor 58 on which the case 57 is movably mounted. In addition, side guide plates 59 are provided on both sides of the roller conveyor 58 in order to restrict the case 57 from dropping to the side along the conveying direction.

In FIGS. 1 and 2, reference numeral 60 denotes an operation box, 61 denotes a control box for controlling the withstand voltage test apparatus 20, and 62 denotes an annunciator for notifying a non-defective product or a defective product by a lamp or an alarm sound.

The present embodiment is configured as described above. When the leakage test of the joint bush 26 is to be performed by the withstand voltage test apparatus 20, the operator needs to set each bush set section 25 at the set station A position. What is necessary is just to attach the joint bush 26, respectively. In the initial stage of using the withstand voltage test apparatus 20, the standby station B
The joint bush 26 is also mounted on each bush set 25 in advance.

When the mounting work of the joint bush 26 at the position of the set station A is completed, a state is obtained in which the set detection sensor detects the joint bush 26 and the area sensor 28 does not detect the worker.
In this state, the bush detection sensor of the standby station B detects the joint bush 26, the withstand voltage test is completed at the withstand voltage test station C, and the unloading and transfer operation of the joint bush 26 is completed at the unloading station D. If so, the table drive motor 24 is automatically driven, and the turntable 23 is rotated 90 degrees in a predetermined direction.

Then, each joint bush 26 mounted at the set station A moves to the standby station B. Further, each joint bush 26 of the standby station B moves to the withstand voltage test station C.

At the withstand voltage test station C, the bush detection sensor detects the joint bush 26 moved from the standby station B, and the withstand voltage test mechanism is operated. If any of the joint bushes 26 is determined to be defective by inspection, the operator is notified of the defective product by the alarm 62 and the operation of the withstand voltage test device 20 is stopped. If each joint bush 26 is determined to be good,
A non-defective product is notified by an alarm 62.

While the leakage test is being conducted at the withstand voltage test station C, the set station A has moved each bush set 2 from the take-out station D.
The joint bush 26 is attached to each of the reference numerals 5.

Then, as described above, when the mounting work of the joint bush 26 at the set station A is completed and other conditions are satisfied, the table drive motor 24 is automatically driven, and the turntable 23 is rotated 90 degrees in a predetermined direction. You.

The standby bush B and the withstand voltage test station C operate in the same manner as described above, and the unloading station D moves each joint bush 26 determined to be non-defective at the withstand voltage test station C. The detection sensor detects, and the take-out transport mechanism is operated. Also, set station A
Then, the mounting work of the joint bush 26 is performed in the same manner as described above.

As described above, when the operator attaches the joint bushings 26 to the bush set portions 25 that are sequentially moved at the set station A, the worker can move
At the withstand voltage test station C, the leakage test is performed, and at the removal station D, the joint bush 26 is removed, and the leakage test is continuously performed.

Therefore, the conventional bush mounting step, the inspection step and the bush removal step are so-called simultaneous operations, so that the waiting time during the withstand voltage test can be effectively avoided and the working efficiency can be improved. Further, since the joint bush 26 is also automatically taken out, an operator is not required at the take-out station D, and the work efficiency can be improved from this point as well.

Further, in the withstand voltage test station C, since the motor cylinder 33 is employed as a drive source for raising and lowering each high voltage application rod 30, the high voltage application rod 3
The control of the rising position of 0 becomes possible, and the withstand voltage test becomes possible regardless of the length of the joint bush 26. In addition, since a gem is used as the grounding body 31, a withstand voltage test can be performed without being affected by the shape and length of the joint bush 26. Here, it is possible to cope with various types of joint bushings 26 and general-purpose equipment can be achieved.

In the withstand voltage test apparatus 20 of the present invention, the withstand voltage test can be performed even when the joint terminal is mounted in the joint bush 26 or the joint bush 26 alone.

Also, the five joint bushes 26
Although a method of detecting whether or not a leak exists in any of the above is shown, a method of individually checking for a leak for each joint bush 26 may be used.

[0067]

As described above, according to the withstand voltage test apparatus of the present invention, the turntable that is operated to rotate by a predetermined angle at a predetermined angle around the vertical axis is provided along the rotation direction of the turntable. A set station for mounting the joint bush in a plurality of bush set portions protrudingly provided on the turntable in a vertical posture, and mounting the joint bush mounted at the set station in the mounted state. A withstand voltage test station having a withstand voltage test mechanism for performing a leakage test at the same time, and a takeout station having a takeout transport mechanism that takes out each joint bush after completion of the test at the withstand voltage test station from each bush set portion and sends it to the outside. The position for mounting the joint bush, the position for performing the withstand voltage test, and the By dividing the position to take out the joint bush, simultaneous work becomes possible, hand waiting during the withstand voltage test can be effectively avoided, work efficiency can be improved, and the joint bush can be automatically taken out. Since it is performed, there is no need for a worker for removal,
From this point, there is an advantage that the working efficiency can be improved.

Each of the bush set portions has a vertically penetrating through hole, and the withstand voltage test mechanism is arranged so as to be able to move up and down freely. A high-voltage application rod inserted into the joint bush, and a grounding body that is arranged movably up and down and that is arranged on the outer peripheral surface side of each joint bush attached to each bush set by a descending operation, A drive source for raising and lowering each of the high-voltage applying rods is a motor cylinder, and the earth body is made of a metal bead arranged in an interdigital manner so as to be disposed near the outer peripheral surface side of each joint bush. For example, the withstand voltage test can be performed without being affected by the length and shape of the joint bush, and there is an advantage that the equipment can be generalized.

[Brief description of the drawings]

FIG. 1 is an overall schematic front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of a withstand voltage test station.

FIG. 4 is an explanatory diagram of the operation of the main part.

FIG. 5 is an explanatory diagram of the operation of the main part.

FIG. 6 is an explanatory diagram of an operation of a main part of the unloading station.

FIG. 7 is a plan view of each chuck body.

FIG. 8 is a front view showing a conventional example.

FIG. 9 is a side view of the same.

[Explanation of symbols]

 Reference Signs List 20 withstand voltage test apparatus 21 gantry 23 turntable 25 bush set part 26 joint bush 30 high voltage application rod 31 grounding body 33 motor cylinder 48 chuck transport mechanism 49 sending-out part

Claims (4)

(57) [Claims] 1. A withstand voltage test device for inspecting a leakage of a cylindrical joint bush having insulation properties, wherein the withstand voltage test device is rotated around a vertical axis by a predetermined angle at a predetermined angle. A set station for mounting the joint bush in a vertical position on a plurality of bush set portions provided in a protruding manner on the turntable along the rotation direction of the turntable, and the set station. A withstand voltage test station having a withstand voltage test mechanism for performing the above-mentioned inspection with each joint bush mounted at the station, and taking out each joint bush after the inspection at the withstand voltage test station from each bush set portion, And a take-out station having a take-out / transport mechanism for sending to a take-out station. Withstand voltage test device. 2. A stand-by station between the set station and the withstand voltage test station, the stand-by station for holding each joint bush while being mounted at the set station is provided. Withstand voltage test equipment. 3. Each of the bush set portions has a through hole vertically penetrating therethrough, and the withstand voltage test mechanism is arranged so as to be able to move up and down freely. A high-voltage application rod inserted into the joint bush, and a grounding body disposed so as to be vertically movable and arranged on an outer peripheral surface side of each joint bush attached to each bush set by a descending operation. 3. The withstand voltage test apparatus according to claim 2, wherein 4. A metal bead having a motor cylinder as a drive source for raising and lowering each of said high voltage applying rods, and said earthing body being arranged in an interdigitated manner so as to be arranged near an outer peripheral surface side of each joint bush. 4. The withstand voltage test device according to claim 3, comprising: