JPS62204173A - Aging device - Google Patents

Abstract

PURPOSE:To simplify an aging device by constituting the device so that works are passed through an exposure temperature atmosphere one after another while burning in. CONSTITUTION:This device is equipped with a work support body 2 which mounts a driving part 1, a conveying device 3 which conveys the support 2, a feed line 4 for feeding electricity to the driving part 1, and an exposing device 5. In the device 5, air sucked from an area 51 to a vent passage 523 by the air blower of a temperature gas supply device 52 is heated by a heater 524 and supplied from an air outlet 522 to the area 51 again, and while a board B is exposed to the atmosphere in the area 51, the driving part 1 is fed with electricity from the feed line 4 through a current collecting trolley 11, so that the board B is burnt in dynamically. The degree of the exposure the driving part 1 and conveying device 3 to the high-temperature air in the area 51 by each work support heat insulating plate body 23 is small enough in practical use to ignore. Thus, the device is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to various electrical and electronic devices, such as microcomputers equipped with various electrical and electronic components, display devices including CRTs and liquid crystals, printers, television receivers, and radios. Those parts (in this specification, these may be collectively referred to as 1 work) can be subjected to burn-in by being energized or exposed to an atmosphere at a predetermined temperature in a state in which the energized and operated state is applied, or Furthermore, the present invention relates to an aging device that can be used to identify the heat resistance, cold resistance, etc. of the workpiece.

Conventional technology and the time in between Conventionally, this type of aging equipment stores electrical and electronic equipment or their parts in a chamber maintained at a predetermined high or low temperature, either as is or supported in a suitable basket, etc. They were to be energized via fixed wiring that penetrated the chamber walls.

However, such batch-type devices have problems such as difficult human processing and the need for manpower, which has hindered factory automation.

In an attempt to solve this problem, the inventor attempted to pass the workpiece through an atmosphere at a predetermined temperature using an automatic conveyance machine while applying burn-in to the workpiece, but the drive unit (driver) for applying the burn-in Moreover, the automatic conveyance machine itself is exposed to high or low temperatures, resulting in damage to the automatic conveyance machine and making maintenance and management of the automatic conveyance machine troublesome.

Therefore, the inventor of the present invention conducted further intensive research and succeeded in developing an aging device that can perform burn-in while passing only the workpiece through an atmosphere at a predetermined temperature, without exposing the drive unit or transfer device to high or low temperatures. did.

Means for solving the problem, that is, the present invention, is as follows: (i) A heating plate for lfI heating, which can support a workpiece on one side of the plate, and a drive for energizing the workpiece on the other side. (ii) a transport device configured to transport the work supported by the work support together with the support; and (iii) a transport device provided along the transport path of the work support, the drive (iv) an exposure area for exposing the workpiece to the temperature gas; a device for supplying the exposure temperature gas to the exposure area; A device is provided for maintaining the exposed area at a positive pressure with respect to the surrounding air pressure, and the exposed area is provided on the conveyance path of the workpiece, and one side of the exposed area passes through the insulating plate for supporting the workpiece of the workpiece support. At least one aging device configured to allow aging.

According to the aging apparatus of the present invention, each workpiece is supported one by one or a plurality of workpieces using a plurality of workpiece supports, and each workpiece supporter is sequentially transferred by the conveying device. During this time, the drive section on each workpiece support is supplied with power from the power supply line via the current collector, and the workpiece on the supporter is energized from the drive section, thereby applying burn-in to the workpiece. In this manner, the workpieces are sequentially fed into the exposure area of the exposure device while being burn-ined, exposed to the temperature atmosphere within the area for a predetermined period of time, and then exited from the exposure area.

When the workpiece is in the exposed area, the driving section and the transport device are placed outside of the exposed area, and since there is a heat insulating plate between the workpiece and the driving section and transporting device, the temperature inside the exposing area relative to the driving section and the transporting device is kept low. The effect is suppressed to a level that poses no practical problem. Further, since the inside of the exposed area is maintained at a positive pressure relative to the surrounding air pressure, the influence of outside air on the inside of the area can be kept to a level that poses no practical problem.

There are no particular restrictions on the heat insulating plate of the support, and in short, various materials, structures, and thicknesses may be used as long as the influence of the temperature in the exposed area on the drive unit and conveyance device can be kept to a level that does not pose a practical problem. You can use the following as appropriate.

Examples of the conveyance device include conveyance devices such as belt conveyors and chain conveyors that support and convey workpiece supports from below, conveyance devices such as trolley conveyors and chain conveyors that suspend and convey workpiece supports from above, and the like. A suitable combination, a device for making the support self-propelled (for example, one consisting of wheels provided on the support, a drive device thereof, and a rail on which the wheels are transferred), and a device that allows the support to move freely along an appropriate track. A device capable of conveying the support by pushing, pulling, or a combination thereof, and other various conveying devices can be used as appropriate.

Further, the transport device may be equipped with a stopper device that can stop the workpiece support at a desired position.

As the conveyance path for the support, various paths such as one extending into a single line, a loop path, a combination thereof, etc. can be used as appropriate.

The exposing device may be, for example, one in which the exposing area is formed in the shape of a groove with both ends of the workpiece open in the transport direction, and the workpiece support may be the heat insulating device that supports the workpiece. One side of the plate moves within the groove-shaped exposure area, and the heat-insulating plate fits into an opening extending in the longitudinal direction of the groove-shaped exposure area and is conveyed so as to be able to move along the opening. Can give examples of what is being done.

The groove shape is a mouth shape, U-shape, etc. when the exposing device faces the workpiece conveyance path from below, and an inverted mouth shape, U-shape, etc. when the exposing device faces the workpiece conveyance path from above. When the exposing device faces the workpiece conveyance path from the side, it has a sideways mouth shape, a U-shape, etc.

When the exposed area is formed in the shape of a tunnel, the workpiece support can support the workpiece above a heat insulating plate and may include the driving section below the plate. In this case, it is convenient if the conveyance device is a free flow chain conveyor. The exposure temperature gas supply device in the exposure apparatus includes, for example, a gas inlet and an outlet opening in the test area, an air passage communicating these two openings, and a heater and a blower installed in the air passage. An example of a device for maintaining the exposed area at a positive pressure relative to the surrounding air pressure is a device that is provided with an external gas introduction hole that opens into the ventilation path on the upstream side of the heater. can.

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

For example, if you have one for high temperature and one for low temperature, you can also conduct thermal cycle tests.

Embodiment Below, as an embodiment of the present invention, an aging device in which a mounting board for an electronic device incorporating circuit elements is passed through a predetermined high temperature atmosphere while being subjected to dynamic burn-in by a drive section will be described with reference to the drawings. explain.

The illustrated aging device includes a workpiece support (2) equipped with a drive unit (1), a transport device (3) that transports the support, and a power supply line (2) for supplying power to the drive unit (1) on the support. 4) and exposing @(5).

The workpiece support (2) is mounted on a pallet board (21) by a column (2).
2) is erected, and a rectangular heat insulating board (23) is provided on the pillar, and the insulating board (23) includes a heat insulating material and has the strength to support a workpiece on its upper surface. There is. A drive section (1) including a memory etc. is mounted below the heat insulating board (23) and on the pallet board (21).
is connected to a current collector (in this example, a trolley (11)) protruding from the bottom of the pallet (21), as well as a group of wires (12) for energizing the workpiece on the heat insulating plate.
is connected. The wire group (12) passes through the heat insulating plate (23) and faces the upper side of the plate, and has a connection terminal to the work at its end. The conveying device (3) is a free flow chain conveyor including a pair of free flow chains (31). The free flow chain (31) has a roller (311) supported on a chain pin for free rotation. The workpiece support (2) is placed on the roller (311) with its pallet plate (21) and is conveyed as the chain moves. However, when the support body (2) encounters resistance that prevents its advancement, the roller (311) freely rotates and the support body (2)
) can be stopped in 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 collection trolley (11) of the drive unit can be moved in contact.

The exposure device (5) includes an exposure area (51), a device (52) for supplying an exposure temperature gas to the area, and a device (53) for maintaining the area at a positive pressure relative to the surrounding air pressure.

The exposure area (51) faces the workpiece conveyance path for a long time and is formed in a tunnel shape.The area (51)
The - side and part of the lower side following it are insulated walls (51
1), the other side is exposed and the temperature gas supply device (52
), and the upper side is a part of the insulation wall (512>) and the device (52
) is covered by the rest of the

The device (52) includes a gas inlet (521) and a gas outlet (522) that are open to the exposure area (51), a ventilation path (523) that communicates these two ports, and a heater (524) installed in the ventilation path. and air blower 1 (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-like ventilation plate (527). The outer wall (528) of the device (52) is also an insulating wall, which wall is similar to said insulating wall (512) surrounding the area (51).
) is continuous. The device (53>) that maintains the area (51) at positive pressure includes a gas introduction hole (531) that opens into the ventilation path (523) on the upstream side of the heater (524), and this hole takes in outside air from the outside. Alternatively, dry air is introduced from an unillustrated dry air source.This introduction is performed using an unillustrated air blower or by the suction force of the air passage (523).

Openings (541,
542) is a shutter (551, 5
52).

A lower opening (56) along the longitudinal direction of the exposed area (51)
), the workpiece support (2) is connected to its heat insulating plate (23).
The conveyor (
3) is arranged and dimensioned to be transported by.

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

Therefore, the electronic equipment mounting board (B) is mounted on a suitable board support frame (6) (or directly) and the workpiece support (
Place the board on the heat insulating board (23) of 2), and place the board on the wire group (2).
12) to connect to the drive unit (1). The work supports (2) supporting such boards (B) are sent one after another to the exposure device (5) by the conveyor (3).

In the exposure device (5), air drawn from the area (51) into the ventilation path (523) of the device by the blower (52) of the exposure temperature gas supply device (52) is heated by the heater (524). , is again supplied to the area (51) from the gas outlet (522). Thus area (5
1) The inside is an exposed atmosphere at a predetermined temperature, and the area (
51), the board (B) is exposed to this atmosphere for a predetermined period of time. This exposure time can be adjusted using the stopper (32).
This is done by appropriately stopping the workpiece support (2).

While the board (B) is thus exposed to the internal environment of the area (51), the drive unit (1) on each workpiece support is connected to the power supply line (4) via the current collection trolley (11). Power is supplied to the board (B) on the support body from the drive unit (1), and the board (B) is placed in a state where it is subjected to dynamic burn-in.

Inside the exposure area (51) is the ventilation path (52) of the exposure device.
3) is maintained at a positive pressure by introducing external dry air from the gas introduction hole (531).

Therefore, the area (
51) The high-temperature air inside is blown out, preventing low-temperature gas from outside from entering the area.

In addition, due to the presence of each work support heat insulating plate (23), the drive unit (1) and conveyor (3) are exposed to the exposed area (51).
) The degree of exposure to high-temperature gas in the interior is such that it does not pose a practical problem.

In addition, if necessary, it is also possible to provide a chamber in parallel with the exposure device (5), which allows the drive unit (1) and the conveyor (3) to pass through a region lower than the ambient temperature of the device.

Effects of the Invention As described above, according to the present invention, it is possible to sequentially pass the exposed workpieces through a temperature atmosphere while subjecting them to burn-in, and it is possible to provide a simple aging device that is useful for factory automation.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic plan view of the entire device, and FIG. 2 is a sectional view taken along the line X--X in FIG. 1. (1)...Drive unit, (11)...Current collector (trolley), (2)...Work support, (23)...Insulating plate, (3)...Transport device (Free flow chain conveyor), (31)...Free flow chain, (4)...Power supply line, (5)...Exposure test device, (51)...Exposure area, (52)...・Exposure temperature gas supply device, (521)・
...Gas inlet, (522)...Gas outlet, (523)...Air passage, (524)...Heater, (525)...Blower, (53>...In exposed area Device for maintaining positive pressure (531)...Gas introduction hole. (and above)

Claims (6)

[Claims] (1) (i) A work support body having a heat insulating plate body, capable of supporting a work piece on one side of the plate body, and equipped with a driving part for energizing the work piece on the other side; (ii) ) a transport device that transports the work supported by the work support together with the support; (iii) a current collector provided along the transport path of the work support and connected to the drive unit; (iv) an exposure area for exposing the workpiece to a temperature gas, a device for supplying the exposure temperature gas to the exposure area, and a positive pressure for the exposure area with respect to the surrounding atmospheric pressure; The exposing area is provided with at least one exposing area that is provided adjacent to the workpiece conveyance path and is formed so that one side of the workpiece supporter can pass through the insulating plate for supporting the workpiece. An aging device comprising: a device; (2) The exposure area of the exposure device is formed in a groove shape with both ends of the workpiece open in the transport direction, and the workpiece support has one side closer to the groove-shaped exposure area than the heat insulating plate supporting the workpiece. Claim 1, wherein the heat insulating plate is conveyed so as to fit into an opening extending in the longitudinal direction of the groove-shaped exposed area and move along the opening while moving within the area. aging equipment. (3) The exposed area is formed in a tunnel shape, and the work support can support the work above the heat insulating plate, and the drive section is provided below the heat insulating plate. The aging device according to scope 2. (4) The aging device according to claim 3, wherein the conveying device is a free flow chain conveyor. (5) The exposure temperature gas supply device in the exposure device includes a gas inlet and an outlet opening in the exposure area, an air passage communicating these two ports, and a heater and a blower installed in the air passage. Claims 1 to 4, wherein the device for maintaining the inside of the exposed area at a positive pressure relative to the surrounding air pressure is provided with an external gas introduction hole that opens into the ventilation path on the upstream side of the heater. The aging device according to any one of. (6) The aging device according to any one of claims 1 to 5, wherein two of the exposing devices are provided, one of which is a high temperature exposing device and the other is a low temperature exposing device.