JPS6270114A - Removal edge construction for ic takeout device - Google Patents

Abstract

PURPOSE:To have sure taking-out of IC's in an IC takeout edge construction by furnishing rollers to the oversurface of a takeout edge at a spacing which is a little greater than the IC thickness. CONSTITUTION:When a takeout edge 64 advances in the direction shown by the arrow into a socket 16, first a roller 66 gets on the oversurface of IC10 to press it downward, and then the tip 64a of the edge intrudes under the undersurface of the IC10 to draw it off from the socket 16. The IC10 thus taken out heaves a roller 72 to intrudes in a groove 68, and is retained there. This construction provides sure taking-out even when IC's in the socket have uneven heights and spacings.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention provides an I/O device for automatically extracting an IC fitted into each socket of a 21-inch board for aging inspection of the IC.
This invention relates to a extracting blade structure for a C extracting device.

[Prior art]

Today, the demand for ICs is increasing dramatically, and in order to cope with this demand, manufacturers are automating their production lines and mass producing RCs. On the other hand, since some defective products occur among mass-produced ICs, each IC is subjected to heat, humidity, strength, and other inspections.

However, it is inefficient to conduct these tests over a long period of time, so in reality, adverse conditions are accelerated and processed in a short period of time, which is called an accelerated test. Among these, those related to heat and temperature are called thermal accelerated tests or aging, in which a large number of ICs are inserted into a boat 9 with multiple sockets, and after being heated at 125°C for 72 hours in a furnace, predetermined characteristics are determined. An exam will be held.

The IC aging inspection process has been automated to some extent, but the process of inserting each IC into the board socket and the I
The process of extracting C still relies on the manual labor of each worker. A plurality of ICs are stored in a predetermined magazine, and a worker takes out the IC one by one from the magazine and inserts it into the socket.
C can be removed. Although these tasks will become faster once you get used to them, it is still desirable to automate them from the perspective of labor saving.

It seems possible to automatically extract and remove ICs by installing multiple extraction jigs and tools in parallel, which are currently done manually, and moving them in the extraction direction.

However, the gap between the socket and the IC is only about 3 mm, and the position of the gap varies by 31 degrees vertically depending on each block. Therefore, there is no problem in manually inserting the IC extraction jig into this gap, but
This is a major bottleneck when it comes to automation.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to provide a extractor blade structure for an IC extractor that can reliably extract an IC even if there are variations in the height of the IC in the socket. There is a particular thing.

[Summary of the invention]

In order to achieve the above object, in the present invention, a roller is installed above the extraction blade at a distance slightly larger than the thickness of the IC, and the roller contacts the top surface of the IC just before the extraction blade enters the socket. It is configured as follows.

Therefore, even if the heights of the ICs in the socket are different, once the roller rides on the IC, the extraction blade will enter the bottom surface of the IC based on this contact position, and the blade will collide with the IC, resulting in mistakes. can be prevented.

(Embodiment of the invention) FIG. 1 shows the most common IP type (dual in-line package) ICl0.
C10 is formed by connecting a lead frame to a predetermined silicon chip and processing the periphery with a mold 9. Also,
A large number of terminals 12 protrude in a centipede shape from both sides of the IC 10, and these terminals 12 are formed by cutting out the frame portion of the IJ-board frame and then bending it downward.

FIG. 2 shows a board 14 used for thermally accelerated testing, or aging. This boat 914 is a rectangular flat plate, and a large number of sockets 16 are provided on its upper surface. A large number of small holes 17 (only some of which are shown) are bored in the inner surfaces of both sides of each socket 16, and both side terminals 12 of the RC IO are inserted into these small holes 17 as shown by arrows.
It can be inserted into. After receiving a large number of ICs 10, the ball 14 is placed in a predetermined furnace (not shown) and heated.

Moreover, predetermined wiring is installed inside the board 14, so that the characteristics of each IC on the board 14 taken out from the furnace can be inspected at once. In this state, the ICIQ is still fitted into the socket 16 of the board 14, and it is necessary to remove the ICIQ from the socket 16.

FIG. 3 shows an IC extraction device 18 employing the extraction blade structure of the present invention. This IC extraction device 18
In this case, a box-shaped rack 20 is installed on the left side of the figure, and a large number of boards 14 into which workpieces C10 are inserted are stacked inside the rack 20.

The lowermost end of the hoard 14 is supported by a support stand 22,
An air cylinder 24 is connected to the center of the lower surface of the support base 22 . Therefore, the boards 14 in the rack 20 are pushed up one stage at a time by the air cylinder U, and the board 14 in the uppermost position is also sent out to the outside.

In this embodiment, a gytro extends upwardly into the rack 20 to facilitate the raising of the boat 914.

926 is provided. Furthermore, on the bottom surface of the rack 20,
It is configured to be able to move on the floor 30 by attaching a plurality of wheels.

On the exit side (right side in the figure) of the uppermost boat 914, four ruts 32 for transporting the boat 9 are arranged to transport the board 14 to the work C extraction position. The bolt 32 has an endless shape and is wound around six pulleys 34, and is moved in the direction of the arrow by a morph (not shown). In addition, as can be seen from FIG. 4, a pair of (ruts 32) are provided to transport the board 14 while supporting both sides of the board 14.Boat 91
4 to the g seat 32 is carried out by a predetermined arm (not shown).

(The conveyance system using the route 32 is actually covered with a predetermined cover (omitted), and the cover is attached to the frame 36. On the bottom surface of the frame 36,
A plurality of support legs 38 and wheels 40 for movement are attached.

A positioning mechanism 42 for a boat 914 is installed at the IC extraction position of the belt 32, as shown in FIGS. 3 and 4. In this positioning mechanism 42, (a table 44 is arranged between the seats 32, and at the center of the front end of the table 44,
A sensor 46 is attached to detect the board 14. In addition, an air cylinder 48 is installed on the bottom of the table ■.
are connected to each other, and the table 44 is raised in response to a signal from the sensor 46.

Two stoppers 50 and 52 are arranged on one side of the table shrine (upper side in FIG. 4), and two air cylinders 56 are provided on the other side. These stoppers 5
0, 52 and the air cylinder cylinder 56 are the table 44
The stopper 5 is for holding the upper board 14 from both sides.
0, 52 are not on the side of the boat 914 but on the socket 1
It comes into contact with the side of 6. This is Bo)
” It is better to use socket 16 as a reference than the side of 14.
This is because the IC extraction position becomes accurate.

In addition, three air cylinders 58, 60, and 62 are installed at the rear of the table (on the left side in Figure 4) (at a position slightly lower than the root 32. The air cylinder μs is also calculated from Figure 3. As can be seen, two air cylinders ω and 62 are installed in parallel at the tops of the cylinders via brackets 64 located vertically. Therefore, when the air cylinder group is operated, each air cylinder mark 62 projects upwards from the belt 32 and corresponds to the rear end of the bow 14.

The air cylinder ω, 62 protrudes and comes into contact with the rear end of the boat 914, and plays the role of supporting the force applied to the board 14 at the time of IC extraction. If it is desired to completely fix the board 14, a predetermined stopper may also be provided on the front end side of the boat 914.

At the upper front of the table, there is a slightly inclined extraction blade for IC extraction. The extraction p blade 8 has a tip 64
It is similar to the conventional extraction jig in that the
As shown in Figure 1, a row 266 is attached to its tip,
It has an elongated groove in the longitudinal direction for receiving a plurality of ICs 10.

The gap size between the roller 66 and the extraction multi-blade tip 64a is I
It is formed slightly thicker than the thickness t of C10, and the tip 64
Before a enters the bottom surface of the IC 10, the roller 66
It is configured to come into contact with the upper surface of 10.

Therefore, even if there is variation in the height of rC10, that is, the gap size S, once the roller 66 contacts the top surface of IC10, the tip 64a enters the gap, and therefore, the tip 64a collides with the front end of IC10. Never.

Further, a rod 70 is inserted in the vertical direction of the extraction blade 64, and a roller 72 is also attached to the tip of the rod 970. The roller 72 is constantly urged downward by a spring 74 to prevent the IC 10 that has entered the groove from being pulled out due to its own weight. When removing the IC, the movement of the extraction blade 64 causes the IC 10 to push up the roller 72 and enter the groove 68. Further, although not shown, the rod 70 can be moved up and down by an air cylinder.

A plurality of extraction υ blades 8 are arranged in the horizontal direction, and these
14, the entire ICl0 can be removed from the socket 16 at once.

The rear end of each extraction blade is connected to a bracket 76 as shown in FIG.
It is mounted so that it can be rotated. Further, an air cylinder 82 and a tension coil spring cavity are interposed between the bracket 76 and the support plate 78.

The tension coil spring 8 always urges the tip 64a of the extraction blade 8 and the roller group downward, and extraction of the ICIQ is performed in this state. The air cylinder 82 extends when IC extraction is completed, rotates the extraction blade upward, and maintains it horizontally.

The upper end of the support plate 78 is attached to a rail 79 so that it can be attached to the rail 79, and the rail 79 is fitted with a rail flap fixed to the inner surface of the portal frame 86 in the lateral direction.
The hamochi is suspended and supported by a gate-shaped frame 86 via two types of rails 79 and 88.

Therefore, the date of sampling is determined by the slide 9 along the rail 79.
After all the ICs 10 are removed from the sockets 16, they can be moved laterally along the rails 88.

Near the end of the rail strip (upper part of FIG. 4), a guide rail for transporting ICs is installed in an inclined manner, and a box 92 for IC accumulation is arranged at the end of the guide rail (A). For this reason, each IC10 released from the sampling plan
slides down each guide rail (A) and falls into the box 92.

On the other hand, there is also a rack 9 on the downstream side of the x route 32 (on the right side in Figure 3).
4 are arranged, and empty boards 14 are stacked. The lowermost end of the board 14 is supported by a support stand 96, and an air cylinder 98 is connected to the lower surface of the support stand. Furthermore, the guides 90 and 100 inside the rack and the wheels 102 on the lower surface of the rack are provided in exactly the same way as the rack 20. However, the difference is that while the boat 914 of the rack 20 rises one step at a time, the boat 14 in the rack 94 descends one step at a time.

IC extraction device 18 of this embodiment configured as described above
operates in the following order:

First, in FIG. 3, the uppermost boat 14 is transferred from within the rack 20 on the upstream side onto the heirloom 32 by a predetermined arm. Each socket 16 of this board 14 has an I.C.
With the board 10 fitted, the board 14 is conveyed in the direction of the arrow. At this time, the table 44, the air cylinder (a)
, 62 are located at a slightly lower position than the bolt 32, so there is no problem in transporting the board 14.

Next, when the board 14 reaches the top of the table 44, the sensor 4
6 detects the front end of the boat 914, the air cylinder 48 is immediately activated, and the boat 914 is lifted together with the table 44 (from the route 32).

Next, as shown in Figure 4, air cylinder words.

The locks are actuated to force the boat 914 against the stops 50 and 52, clamping the board 14 on both sides. Stotsuba 50
, 52 contact the socket 16 rather than the side surface of the boat 414, so each socket position is accurately positioned with respect to the stopper contact point.

Next, the air cylinder 58 (Fig. 3) is operated to raise the pair of air cylinders (A) and 62 (Fig. 4), and the air cylinder mark 62 extends and comes into contact with the rear end of the board 14. . Since the extraction method moves sufficiently to the left in the drawing, the position of the board 14 in the longitudinal direction does not need to be very accurate.

As shown in FIG. 5, when the extraction blade moves in the direction of the arrow, the mass roller board rides on the upper surface of the ICIO, and then the tip 64a enters the lower surface of the ICIQ. When the tip 64a moves further, the IC 10 is inserted into the socket 16.
It separates from the roller 72, pushes up the roller 72, enters the groove, and is prevented from returning 9 by the roller 72.

During extraction, the tension coil is always urged downward by the action of the lagoon, so the tip 64a is never higher than the gap between the ICs 10. Further, even if the extraction blade 64 is lower than the predetermined position, when the roller mark rides on the IC10, the tip 64a also rises at the same time, so that there will be no mistake in extracting the IC10.

Of the pressing force applied during extraction, the downward component is applied to table 4.
4 supports, and the lateral component force is air cylinder ω.

62 (FIG. 4) is supported.

Since the socket 16 is accurately positioned in the lateral direction (in the direction across the belt 32) by the stoppers 50 and 52 as described above, the extraction blade 64 does not shift in the lateral direction with respect to the socket 16.

When all ICs 10 in each socket 16 are removed,
The air cylinder 82 is extended, and the extraction blade 64 is pivoted upward and becomes horizontal. Next, the extraction method moves laterally along the rail wing, as shown in FIG. 4, and stops near the entrance of the guide rail cabinet. Here, the air cylinder 82 (
3) shortens and causes the extraction blade 64 to tilt significantly, while at the same time the rod 70 and roller 72 (FIG. 5) rise.

Therefore, a large number of ICs 10 in the groove slide out and fall along the guide rail (A), and are accumulated in the box 92.

On the other hand, the empty bow v14 is air cylinder 54°5
6. After being released from 60 and 62, the table 44 is lowered, placed on the seat 32 again, and transported to the rack 94 side. Further, the air cylinder 58 (FIG. 3) is also shortened, and the air cylinder mark 62 is lowered.

Empty boards 14 are stacked into a well 94 near the exit of the vault 32 by a predetermined arm (not shown). When the boats r14 are piled up, the air cylinder 98 is activated and the entire boat 9 is lowered one step.

After feeding each T C10, the extraction 8 is done by rail 79.
It moves slightly backward along the rail, and then returns to the IC extraction position again along the rail. At this time, the next boat 914 has already been positioned on the table 14, and the above-described operation is then repeated. All these operations are performed under microcomputer control.

〔Effect of the invention〕

As shown in the paper, in the extractor blade structure of the present invention, a roller is provided above the tip of the extractor blade, and a groove is formed between the roller and the tip of the extractor blade to receive the IC.
Even if there are variations in the height or gap of C, all I
C can be extracted.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a DIP type IC, FIG. 2 is a perspective view of an aging boat 9, FIG. 3 is a simplified side view of an IC extraction device to which the extraction blade of the present invention is applied, and FIG. 4 is the third
The plan view of the figure and FIG. 5 are an enlarged sectional view of the extraction blade. 10...IC12...Terminal 14. Aging board 16...Socket 18...IC extraction device 32.
・Balt 42...Boat 9 positioning mechanism 44・Table 64...Extracting blade 64a...Extracting blade tip □□□ Roller brocade/groove 72...Roller 79...Rail (fund)...Pin 82・Air cylinder 澗 Tension coil spring 86...Gate-shaped frame Simple...Rail
S... IC gap dimension -... IC thickness

Claims (1)

[Claims] A sampling blade structure for an IC extraction device that automatically extracts ICs fitted into each socket of an aging board for aging inspection of ICs, and the socket is provided at a slight inclination corresponding to each socket of the board. The extraction blade wedge-shaped into the lower surface of the IC inside the socket and extracts the IC, and the extraction blade is attached above the tip of the extraction blade at a distance slightly larger than the thickness of the IC, and comes into contact with the top surface of the IC just before the extraction blade enters the socket. A extractor blade structure for an IC extractor, comprising a roller and an IC receiving groove formed between the tip of the extractor blade and the roller.