JPH0616072B2 - Aging device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various electric devices, electronic devices such as a microcomputer equipped with various electric and electronic parts, a display device including a CRT or a liquid crystal, a printer, a television receiver, a radio, or the like. Burn-in can be performed by exposing these parts (which may be collectively referred to as "workpieces" in the present specification) to an atmosphere of a predetermined temperature while they are energized or activated. Further, the present invention relates to an aging device that can be used for washing out (screening) defective products and knowing the heat resistance and cold resistance of the work.

2. Description of the Related Art Conventional technology and its problems Conventionally, this type of aging device is used to store electric or electronic devices or their parts in a chamber maintained at a predetermined high temperature or low temperature as they are or by supporting them in an appropriate basket or the like. , Through the wall of the chamber, to energize them via fixed wiring.

However, such a batch-type device has problems that it is difficult to process a large amount and requires manual labor, which hinders the production of factor automation.

In order to solve such a problem, the present inventor tried to pass a work into a predetermined temperature atmosphere with an automatic carrier while applying burn-in to the work, but a drive unit (driver) for applying the burn-in. In addition, the automatic carrier itself is exposed to high and low temperatures, causing damage to the automatic carrier, which makes maintenance of the automatic carrier troublesome.

Therefore, the present inventor has conducted further diligent research and succeeded in developing an aging device capable of performing burn-in while allowing only a work to pass through in a predetermined temperature atmosphere without exposing the drive unit and the transport device to high temperature and low temperature. did.

Means for Solving the Problems That is, the present invention includes (i) a drive unit having a heat insulating plate, capable of supporting a work on one side of the plate, and energizing the work on the other side. A work support provided with (ii) a transfer device for transferring the work supported by the work support together with the support, (iii) provided along a transfer path of the work support,
A power supply line for supplying power to the drive unit via a current collector connected to the drive unit, (iv) an exposure area for exposing the workpiece to the temperature gas, and supplying the exposure temperature gas to the exposure area A device and a device for maintaining the exposure area at a positive pressure relative to the ambient pressure, the exposure area being provided in the work transfer path, and being one side of the heat insulating plate for supporting the work of the work support. An aging device comprising: at least one exposing device that is formed so that its sides can pass through.

According to the aging device of the present invention, each work is supported one by one or in plural by using a plurality of work supports, and sequentially transferred by the transport device together with the work supports. In the meantime, the drive unit on each work support is supplied with power from the power supply line via the current collector, and the work on the support is energized from the drive unit to burn-in the work. As described above, the work is sequentially sent into the exposure area of the exposure device while being burned in, exposed to the temperature atmosphere in the area for a predetermined time, and then exits the exposure area. When the work is in the exposure area, the drive unit and the transfer device are located outside the work area, and the heat insulating plate between the work and the drive unit and the transfer device prevents the temperature of the drive area and the transfer device from being exposed. The impact is suppressed to the extent that there is no practical problem. Further, since the exposed area is maintained at a positive pressure with respect to the ambient pressure, the influence of the outside air into the exposed area can be limited to a level where there is no practical problem.

The heat insulating plate of the support is not particularly limited, and in short, various materials, structures, and thicknesses can be used as long as the influence of the temperature in the exposed area on the driving unit and the transporting device can be kept to a level that does not cause any practical problems. Those can be used as appropriate.

As the transfer device, a belt conveyor that supports and transfers the work support from below, a transfer device such as a chain conveyor, a trolley conveyor that hangs and transfers the support from above, a transfer device such as a chain conveyor, or the like. An appropriate combination, a device for self-propelling the support (for example, a wheel provided on the support and a drive device therefor and a rail on which the wheel rolls, etc.), and the support are movable along an appropriate track. Further, an apparatus capable of pushing or pulling the support or a combination thereof to carry it, and other various carrying apparatuses can be used as appropriate.

Further, the transfer device may be provided with a stopper device that can stop the work support at a desired position.

As the conveyance path of the support, various ones such as one extending, one drawing a loop, and a combination thereof can be appropriately used.

Examples of the exposing device may include those in which the exposing area is formed in a groove shape with both ends of the work in the transport direction opened, and the work support may be the heat insulation supporting the work. One side of the plate body moves in the groove-shaped exposed area, and the heat insulating plate body is fitted in an opening extending in the longitudinal direction of the groove-shaped exposed area so that it can be transferred along the opening. Can be exemplified.

The groove shape is a Φ shape, a U shape or the like when the exposing device faces the work transfer path from below, and an inverted Φ shape or a U shape when the exposing device faces the work transfer path from above. When the exposing device is facing the work transfer path from the side, the exposing device has a Φ-shape, a U-shape, or the like.

When the exposed area is formed in a tunnel shape, the work support can support the work on the upper side of the heat insulating plate and have the drive unit below the plate. In this case, it is convenient if the transfer device is a free-flow chain conveyor. As the exposure temperature gas supply device in the exposure device, for example, a gas inlet opening and a gas outlet opening in the test area, a ventilation path communicating these both openings, a heater and a blower installed in the ventilation path are provided. As a device for maintaining the inside of the exposed area at a positive pressure with respect to the ambient pressure, for example, a device having an external gas introduction hole opening to the ventilation path upstream of the heater is exemplified. it can.

In the present invention, the number and type of exposure devices (high temperature exposure, low temperature exposure) can be appropriately determined as necessary.

For example, if a high temperature type and a low temperature type are provided, a cooling / heating cycle test is also possible.

EXAMPLE An aging device for passing a mounting board of an electronic device incorporating a circuit element into a predetermined high temperature atmosphere with a dynamic burn-in applied by a drive unit will be described below as one example of the present invention with reference to the drawings. While explaining.

The illustrated aging device includes a work support (2) on which a drive unit (1) is mounted, a transfer device (3) for transferring the support, and a power supply line () for supplying power to the drive unit (1) on the support. 4) and an exposure device (5).

The work support (2) is mounted on the pallet plate (21) on the pillar (2).
2) is provided upright and a rectangular heat insulating plate (23) is provided on the pillar. The heat insulating plate (23) includes a heat insulating material and has a strength capable of supporting a work on its upper surface. There is. A drive unit (1) including a memory and the like is mounted below the heat insulating plate (23) and on the pallet plate (21), and the drive unit (1).
A current collector (a trolley in this embodiment) (11) projecting downward from the pallet (21) is connected to the wire, and a wire group (12) for energizing the work on the heat insulating plate is connected to the wire.
Are connected. The wire group (12) penetrates the heat insulating plate (23) and faces the upper side of the plate, and has a connection terminal to the work at the end thereof. The transfer device (3) is a free flow chain conveyor including a pair of free flow chains (31). The free flow chain (31) is a chain pin on which a roller (311) is rotatably supported. The work support body (2) is placed on the roller (311) by the pallet plate (21) thereof and is conveyed as the chain moves. However, when the support (2) receives a resistance that prevents its progress, the roller (311) may idle and the support (2) may be stopped in its place.

The power supply line (4) is installed between the pair of free flow chains in the form of a rail on which the current collecting trolley (11) of the drive unit can make contact rolling.

The exposing device (5) comprises an exposing area (51), a device (52) for supplying the exposing temperature gas to the area, and a device (53) for maintaining the inside of the area at a positive pressure with respect to the ambient pressure.

The exposed area (51) faces the conveyance path of the work for a long time and is formed in a tunnel shape. The area (51)
Of the heat insulating wall (51
Covered with 1) and exposing the other side, temperature gas supply device (5
2) a part of the upper side and the upper side of the insulating wall (512) and the device (5
Covered with the rest of 2).

The device (52) includes a gas inlet (521) and a gas outlet (522) opened in the exposure area (51), a ventilation path (523) connecting these two openings, and a heater (524) installed in the ventilation path. And a blower (525).
(526) is a blower drive unit.

The gas outlet (522) extends along the longitudinal direction of the area (51) and is provided with a mesh plate-shaped ventilation plate (527). The outer wall (528) of the device (52) is also an insulating wall, which wall surrounds the area (51).
It continues to 2). The device (53) for maintaining the area (51) at a positive pressure includes a gas introduction hole (531) opening to the ventilation path (523) on the upstream side of the heater (524), and the outside air is taken into the hole from the outside. Alternatively, dry air is introduced from an unillustrated dry air source. This introduction is performed by using an outside fan or by suction force of the ventilation path (523).

Opening (541, both ends in the longitudinal direction of the exposed area (51)
542) is a shutter (551, 5) that can be moved up and down by an appropriate drive means (not shown) such as a piston cylinder device.
52) opens and closes. The lower opening (56) along the longitudinal direction of the exposed area (51) is exactly the opening (56) of the heat insulating plate (23) of the work support (2).
It is arranged and dimensioned so as to be conveyed by a conveyor (3) in a fitted state.

The conveyor (3) has stoppers (32) that can be retracted and retracted on the upper surface of the conveyor at appropriate positions including the portion facing the exposure area (51), and the workpiece support (2) can be stopped appropriately by this stopper. .

Therefore, the electronic device mounting board (B) is mounted on (or directly on) a suitable board support frame (6) and placed on the heat insulating plate (23) of the work support (2), The board is connected to the driving unit (1) by the line group (12). The work supports (2) supporting such boards (B) are successively fed to the exposing device (5) by the conveyor (3).

In the exposing device (5), the air sucked from the area (51) into the ventilation passage (523) of the device by the blower (52) of the exposing temperature gas supply device (52) is supplied to the heater (524). It is heated and supplied again to the area (51) from the gas outlet (522). Thus, the area (5
The inside of 1) is exposed to a predetermined temperature, and the board (B) passing through the area (51) is exposed to this atmosphere for a predetermined time. This exposure time can be adjusted by stopping (3
This is performed by appropriately stopping the work support (2) according to 2).

As described above, while the board (B) is exposed to the atmosphere in the area (51), power is supplied to the drive unit (1) on each work support from the power supply line (4) via the current collecting trolley (11). Then, the board (B) on the support is energized from the drive unit (1), and the board (B) is left in a state of being subjected to dynamic burn-in.

The exposure area (51) has a ventilation path (52) of the exposure device.
A positive pressure is maintained by introducing external dry air into the 3) through the gas introduction hole (531). Therefore, in the area (51) from the gap between the device (5) and both sides of the heat insulating plate (23) of each work support in the exposing device (5) and the gap between the adjacent work support heat insulating plate (23). Hot air is blown out and low temperature outside gas is prevented from entering the area.

In addition, due to the presence of each work support heat insulating plate (23), the drive unit (1) and the conveyor (3) are exposed to the exposed area (5).
1) The degree of exposure to the high temperature gas in the interior is such that it does not pose a practical problem.

If necessary, a chamber that allows the drive unit (1) and the conveyor (3) to pass to a temperature range lower than the ambient temperature of the apparatus can be provided in parallel with the exposing apparatus (5).

EFFECTS OF THE INVENTION As described above, according to the present invention, it is possible to provide a simple aging apparatus that can pass FAs one after another while exposing them to the atmosphere of exposure temperature while applying burn-in to them.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a schematic plan view of the whole, and FIG. 2 is a sectional view taken along line XX of FIG. (1) …… Drive unit, (11) …… Collector (trolley), (2) …… Work support, (23) …… Insulation plate, (3) …… Conveying device (free flow chain conveyor) ), (31) …… Free flow chain, (4) …… Feed line, (5) …… Exposure test device, (51) …… Exposure area, (52) …… Exposure temperature gas supply device, (521) …… Gas inlet, (522) …… Gas outlet, (523) …… Ventilation passage, (524) …… Heater, (525) …… Blower, (53) …… Maintains positive pressure in exposed area Device for (531) ... Gas introduction hole.

Claims (6)

[Claims] (I) A work support having a heat insulating plate, capable of supporting a work on one side of the plate, and provided with a drive unit for energizing the work on the other side. (Ii) a transfer device that transfers the work supported by the work support together with the support, and (iii) is provided along a transfer path of the work support,
A power supply line for supplying power to the drive unit via a current collector connected to the drive unit, (iv) an exposure area for exposing the workpiece to the temperature gas, and supplying the exposure temperature gas to the exposure area A device and a device for maintaining the exposure area at a positive pressure relative to the ambient pressure, the exposure area being provided in the work transfer path, and being one side of the heat insulating plate for supporting the work of the work support. An aging device, characterized in that it comprises at least one exposing device which is formed such that its sides can pass through. 2. The exposing area of the exposing device is formed in a groove shape with both ends of the workpiece in the conveying direction opened.
In the work support, one side of the heat insulating plate supporting the work moves in the groove-shaped exposing area, and the heat insulating plate is fitted in the opening extending in the longitudinal direction of the groove-shaped exposing area. The aging device according to claim 1, wherein the aging device is adapted to be transported so as to be able to move along. 3. The exposure area is formed in a tunnel shape, the work support can support a work on the upper side of the heat insulating plate, and the drive unit is provided below the heat insulating plate. The aging device according to claim 2. 4. The aging device according to claim 3, wherein the transfer device is a free-flow chain conveyor. 5. A gas supply device for the exposure temperature gas in the exposure device comprises a gas inlet and a gas outlet opened in the exposure area, a ventilation path communicating these two openings, a heater and a blower installed in the ventilation path. The apparatus for maintaining the inside of the exposed area at a positive pressure with respect to the ambient pressure, has an external gas introduction hole opening to the ventilation path on the upstream side of the heater. Four
An aging device according to any one of items. 6. The aging device according to claim 1, wherein the aging device is provided with two, one of which is a high temperature exposing device and the other of which is a low temperature exposing device.