JPS6358399B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a test device for each of the receiving section and sending section of an IC handler used for automatically attaching and detaching an IC to and from a socket for testing. This invention relates to a device that automatically releases IC jams that occur due to misalignment between the chute on the handler side and the magic gun at the connection between an IC supply magazine and a tested IC removal magazine.

[Background of the invention]

When mass producing ICs, for example, the IC handler automatically attaches and detaches the ICs to the sockets of the IC testing machine. a large number of each
The IC is carried out in a magazine that can be stored in a state in which it can slide one after another on a runway using lead pins as a guide, for example. And, since a large number of the magazines mentioned above are required at mass production sites,
Magazines are manufactured by press-forming, for example, aluminum plates, but there may be some variation in the cross-sectional shape after press-forming (for example, the design maximum value ±0.3 mm), and the magazine may gradually change during use. Misalignment of the cross-sectional shape may also occur.

The supply side magazine is inclined to the same extent as the receiving chute of the handler and is connected to the chute, and a large number of ICs are slid by gravity due to the above-mentioned inclination and are supplied from the magazine to the handler. Further, the take-out side magazine is connected and arranged to be inclined to the same extent as the delivery chute of the handler, so that the ICs are sequentially slid by gravity and loaded from the handler into the magazine.

FIG. 1 is a schematic diagram showing the connection and arrangement of the handler and magazine described above and the IC sliding path (arrow). To explain this, 1 in the figure is the IC handler,
2 is an IC receiving part chute of the IC handler, 3 is a supply side magazine, and the supply side magazine 3 is:
Initially, they were supplied to a magazine stacker (not shown) in a horizontal stack as shown by the dashed line, and were automatically taken out one by one from the bottom of the stacker and tilted at the same angle as the IC receiving chute 2 of the IC handler. placed in the supply position. Reference numeral 4 denotes a feed-out chute of the handler, 5 a take-out magazine connected and arranged at the same angle as the feed-out chute of the handler, 6 an IC socket, and the IC is automatically attached to and removed from the IC socket 6 by the handler. A marking line 7 connects the socket 6 and an IC testing device (not shown) installed outside the IC handler 1.

Note that A and B in the figure are, respectively,
These are the connection points between the supply side magazine 3 and the handler reception chute 2, and the connection points between the handler delivery side chute 4 and the takeout side magazine 5.

The receiving part chute 2 and the sending part chute 4 of the handler described above are made of a material with sufficient strength and rigidity, for example, by cutting the rigid material, finishing it with high precision, plating it with hard chrome, and then buffing it to make it easy to slip. It's made. Therefore, there is virtually no chance that the IC will become stuck somewhere on the running path within the handler 1, that is, there will be no chance that the IC will become clogged. However, at the connection point A between the receiving chute 2 of the handler and the supply side magazine 3 and the connection point B between the handler sending out chute 4 and the ejection side magazine 5, as described above, the cross-sectional shape of the magazine is , variations, and deformations, and due to relative positional deviations that occur between the magazine holding device (not shown) at each position, the absolute value is small, but the difference between the IC running path on the magazine side and the chute side There are some deviations between the two IC routes. In addition, in order for the IC to slide on the runway inside the magazine or chute, there must be some space between the runway wall and the lead pins and package cage outer surface that serve as guides on the IC side.
Each IC glides in a slightly different relative attitude and position to the runway. In the end, at the connection points A and B, the above-mentioned deviation of the running path and the IC
Due to variations in posture due to clearance between the IC and the track, the IC gets stuck somewhere between connection points A and B and becomes stuck. In other words, IC clogging may occur. For this reason, conventionally, a sensor was provided to detect the occurrence of an IC blockage at the connection point described above, and each time the sensor detected an IC blockage, the IC blockage was cleared by obtaining one.
At times, IC clogging occurred frequently, and the handler was far from fully automatic operation.

[Problem that the invention seeks to solve]

The present invention solves the above-mentioned problems, and even if an IC jam occurs at the connection point between the chute and the magazine, the invention works in conjunction with an IC jam detection sensor to
The above-mentioned blockage can be automatically cleared without human intervention.
The purpose of this invention is to provide an IC handler jam release device.

[Means for solving problems]

In order to achieve the above-mentioned object, the IC handler clogging release device of the present invention is provided with a chute in each of the IC receiving section and the sending section, and allows a large number of ICs to slide in sequence in each chute. The magazines that can be stored are connected and arranged so that they can be exchanged freely.
In the IC handler, an ejection hole is provided in the chute for ejecting compressed air from below toward the connection point between the chute and the magazine, and when a clogging of the IC is detected at the connection point, the ejection hole releases compressed air from the connection point. Air is intermittently blown from below to lift the tip of the clogged IC.
The feature is that the position and posture of the robot can be changed.

[Effect]

The IC handler clogging release device according to the present invention includes:
Since the chute has a blowout hole that blows out compressed air from below toward the connection point between the chute and the magazine, if the magazine or an IC that has slid through the chute becomes clogged at the connection point between the chute and the magazine, , In response to the detection sensor signal, compressed air is intermittently jetted from below through an amplifier, solenoid valve, etc. from the above-mentioned blowout hole so as to lift up the tip of the IC that is clogged at the connection point, and remove the clog. IC causing
This changes the attitude and position of the IC, releases it from the stuck state, and allows the IC to slide.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

FIG. 2 shows an example implemented in part A in FIG. 1 on the IC supply side, and the same or equivalent members as those in FIG. 1 described above are indicated by the same symbols.

2 is a handler receiving chute, and a supply magazine 3 is connected to the receiving chute 2 at the same angle, and the cross-sectional shape of the supply magazine 3 is shown in the upper right corner. Reference numeral 8 denotes a compressed air blowout hole formed in the receiving chute 2 to blow out air from below toward the connection point between the receiving chute 2 and the supply side magazine 3, and 9 a pipe leading to the blowout hole 8. 10 is a compressed air pipe connected to the throttle valve 9; 11 is an IC that is clogged at the connection point between the receiving chute 2 and the supply magazine 3; is based on the supply side magazine automatic placement mechanism.

Since the present embodiment is configured as described above, a large number of ICs are sequentially supplied from the supply side of the supply side magazine 3 to the supply side magazine 3, slide inside the magazine 3, and are taken over to the receiving chute 2. However, in the case of this embodiment, the IC is mounted on a horse by holding the internally protruding parts with lead pins, such as the rail 3a in the supply magazine 3 and the rail 2a in the receiving chute 2. However, when the IC gets clogged at the connection point mentioned above, the signal from the clog detection sensor activates a compressed air blowing device (not shown), which instantly (pulses) blows the compressed air three times. Nozzle hole 8 drilled in
Compressed air is ejected from below to lift the tip of the clogged IC as described above, change the attitude and position of the IC, release the jammed state, and remove the IC from the receiving section. Try to ski within 2. The amount of compressed air that is ejected is adjusted by the throttle valve 9, but the amount of compressed air that is ejected is adjusted by the
When the IC was made to float by about 0.5 to 1.2 mm, the IC
The blockage could always be cleared reliably.

〔Effect of the invention〕

The IC handler clogging release device according to the present invention includes:
Since a blowout hole is drilled in the chute to blow out compressed air from below toward the connection point between the chute and the magazine, if an IC that has slid through the magazine or chute becomes clogged at the connection point, the detection sensor signal Compressed air is intermittently ejected from below from the above-mentioned nozzle so as to lift the tip of the clogged IC, thereby changing the posture and position of the clogged IC and releasing the stuck condition. It is a relatively simple and inexpensive device that does not apply excessive force to the IC.
It can automatically clear the jammed IC at the connection point between the handler's chute and the magazine.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the state of connection and arrangement of a handler and a magazine and an IC sliding path, and FIG. 2 is an explanatory diagram showing an embodiment of the present invention. 1: Handler, 2: Handler reception department shoot,
3: Supply side magazine, 4: Handler delivery section chute, 5: Ejection side magazine, 6: IC socket,
8: Compressed air outlet, 11: Clogged IC.

Claims (1)

[Claims] 1. The receiving section and sending section of the IC are each provided with a chute, and each chute has a plurality of chute.
In an IC handler in which a magazine capable of storing ICs in a sequentially slidable manner is connected and arranged in a replaceable manner, an ejection hole is bored in the chute to blow out compressed air from below toward the connection point between the chute and the magazine, and When a blockage of the IC is detected at the connection point, air is intermittently jetted from below so as to lift the tip of the IC that is clogged at the connection point from the jet hole.
An IC handler jam release device characterized by changing the position and posture of the IC handler.