JPH0231838Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a stake supply device for DIP type ICs (hereinafter simply referred to as ICs), and in particular, is a device for supplying stakes that are uniquely manufactured by IC manufacturers. The present invention also relates to an IC stake supply device suitable for transmitting and receiving ICs to and from a preceding process or a subsequent process.

[Background of the idea]

The IC is in the first case, which is a special case unique to the IC manufacturer.
It is handled in a stake 1 as shown in the figure. And the IC placed in this stake 1
(not shown) is the status 1 at the user's side.
, and may be stored in the stake 1 again after undergoing necessary processing, inspection, etc. steps. In this case, supplying ICs from stake 1 and storing ICs in stake 1 are automatically and continuously performed using a stake supply device.

At this time, since the stake supply device handles a variety of ICs, it is often desired to handle various types of stakes without being limited to a specific stake.

However, STATE 1 has been changed to STATE 2 by IC manufacturers.
They are manufactured in various shapes and sizes, as shown in Figures A, B, C, and D.

Therefore, it is difficult to construct a stake supply device that is compatible with all of these stakes, and conventionally, a stake supply device that is limited to specific stakes has been used. For this reason, the conventional stake supply device has the disadvantage that it cannot be applied when various types of stakes must be used in a mixed manner.

In addition, H in Figure 2 is the height of various stakes,
Hmax is the maximum height of various stakes, W ₁
is the width of each stake, W ₂ is the inner width of the recess of each stake, T is the wall thickness of the same recess, W _1nax is the maximum width of each stake, W _2nio is the minimum width of the inner recess of each stake Tmin
(Tmax) is the minimum wall thickness (maximum wall thickness) of the same recessed part.
shows.

[Purpose of invention]

The purpose of the present invention is to eliminate the drawbacks of the prior art described above, and to provide a stake supply device for ICs that can load various stakes together, reliably catch the stakes that have fallen from the chute, and position them with the degree of precision required for practical use. There is something to do.

[Summary of the idea]

In this invention, the width of each guide groove of a pair of chute for stacking stakes is made wider than the maximum width of the various stakes, and the guide groove width is formed to be wider than the maximum width of the various stakes. stored in
(below the chute on the entrance/exit side of the IC) is provided a stake guide having a guide portion formed with a width narrower than the minimum width of the recesses of the various stakes; The stake guide has a continuous tapered surface and a stake receiving portion that forms a step that prevents the stake fitted in the guide portion from moving in the longitudinal direction, and the stake guide is reciprocated in the vertical direction. It is characterized by a structure in which

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

FIG. 6 shows an IC inspection device 17 installed on a pedestal 16, and above and below this is a device for supplying stakes containing ICs to be inspected and devices for inspecting ICs that have been inspected.
This is an example in which a device for supplying empty stakes into which ICs are to be stored is arranged, and since the configurations of both stake supply devices are almost the same, the following will describe the stake supply device on the IC feeding side.

The stake supply device shown in these figures includes a main body 2 for attaching various parts, a pair of chute 3, 4, a set of stopper 5 and clamper 8 provided inside each chute 3, 4, a stake guide 14 provided at the bottom of the chute 3;
It also includes an ejector 15 for pushing out empty stakes.

As shown in FIG. 3, the main body 2 includes a bottom plate 2a.
It is formed into an L-shaped cross section by the side plate 2b and the side plate 2b. Further, the bottom plate 2a is formed with an inclined surface that is lower on the chute 3 side than on the chute 4 side, and the stakes 1' that have fallen from the chute 3 and 4 slide down by their own weight in the direction shown by arrow a in FIG. 3.

Guide grooves 3a, 4a are formed in the chute 3, 4 and have a width _t1 wider than the maximum width _W1nax of the various stakes and are long in the vertical direction.
Further, the chute 3 and 4 are mutually arranged in guide grooves 3a and 4.
The stacks are installed on the bottom plate 2a of the main body 2 with the ends facing each other, and are fitted into these guide grooves 3a, 4a so that various stakes can be loaded thereon.

As shown in FIG. 4, the stopper 5 is arranged between the upper surface of the bottom plate 2a of the main body 2 and the lower surface of the stopper 5 with a height _h1 greater than the maximum height Hmax of the various stakes. ing. Further, this stopper 5 is slidably attached to the side plate 2b of the main body 2 via a sleeve 6, and is connected to the chute 3, via a rod 7 linked to a reciprocating drive source (not shown) such as a hydraulic cylinder. 4, the lowermost stay is supported at the inner side near the lower end of the rod, and the lowermost stay is supported when the rod is advanced, and when the rod is retracted, the stay is released and allowed to fall.

As shown in FIG. 4, the clamper 8 has a space between the top surface of the stopper 5 and the bottom surface of the clamper 8.
They are arranged with an interval h ₂ between them, and this interval h ₂ is set to approximately Hmax=h ₂ with respect to the maximum height Hmax of the various stakes. Further, the clamper 8 is slidably attached to the side plate 2b of the main body 2 via a sleeve 9. Furthermore, the clamper 8 is connected to the chute 3,
The advancing and retracting operations are performed at the inner part near the lower part of the chute 4, and the guide grooves 3a and 4 of the chute 3 and 4 are operated when advancing.
The second stake from the bottom is held between it and one end surface of a, and when the stake is moved backward, the stake is released and the rows of stakes stacked on the chute 3 and 4 are delivered to the stopper 5. In addition, the clamper 8 has a compression spring 13 built into the rod 10, so that even if the sticks have different widths _W1 and external shapes, each guide groove 3a, 4
It is configured so that it can be held with a substantially constant force between it and one end surface of a.

In FIG. 4, reference numeral 11 indicates a pin connecting the clamper and the rod, and reference numeral 12 indicates an elongated hole for guiding the pin.

Also, in Fig. 4, the stopper 5 on the chute 3 side
is shown for clamper 8, but chute 4
The side stopper 5 and clamper 8 are similarly configured,
Moreover, it is attached symmetrically to the attachment state shown in FIG. 4.

The stay guide 14 is connected to the shoots 3 and 4.
IC ejected from stake 1' that fell from
It is provided at the lower part of the chute 3 located on the exit side (not shown). This status guide 14
As shown in FIG. 5, the guide portion 14a is formed at the top of one half in the length direction, and the stay holder is formed into an L-shape when viewed from the front from the bottom of the same half to the other half. It has a portion 14d. The guide portion 14a is formed to have a width _t2 narrower than the minimum inner width _W2nio of the recesses 1a of various stakes.
A tapered surface 14b is provided continuously above a, and the top portion 14c thereof is a flat surface. The guide portion 14a is fitted into the recesses 1a of various stakes using the tapered surface 14b as a guide, and the top portion 14c formed on a flat surface abuts the bottom surface of the recess 1a of the stake to receive the stake. . On the other hand, the stake receiving portion 14d has a wall thickness of the concave portion 1a of each stake.
The height difference ΔH is formed to be less than or equal to Tmin. This stake receiving portion 14d receives the stake 1' fitted to the guide portion 14a so that it does not slip off, and also prevents the IC stored in the stake 1' from getting caught when passing. A chamfer is formed on the edge. Furthermore, the stay guide 14
is connected to an elevating drive source (not shown) that is reciprocated in the vertical direction, and in its elevated position, the chute 3, 4
It receives the stake 1' that has fallen from the machine, holds the stake 1' in order to discharge the stored IC to the next process, and then descends in the direction of arrow d and places the empty stake on the bottom plate 2a of the main body 2. It is becoming more and more common to

The ejector 15 is as shown in FIG.
It is arranged approximately in the middle between the shoots 3 and 4. Further, the ejector 15 is connected to a reciprocating drive source (not shown), and is configured to move in the direction of arrow e when advancing, and push out the empty stake on the bottom plate 2a of the main body 2.

The stake feeding device of the above embodiment is used and operates as follows.

First, as shown in FIG. 4, each stopper 5 provided on the inside of the chute 3, 4 is advanced, and the clamper 8 is retracted.
Drop in the stacks that store them and stack them up. In this case, since the guide grooves 3a and 4a are formed to have a width t ₁ wider than the maximum width W _1nax of the various stakes, it is possible to mix and match stakes with different shapes and dimensions that are independently manufactured by IC manufacturers. can do.

As mentioned above, after stacking the required number of stakes, each clamper 8 provided on the inside of the chute 3, 4 is advanced as shown by the arrow b in FIG. The second stake from the bottom of the stacked stakes is held. Furthermore, due to the action of the compression spring 13, the clamper 8 can be held with a substantially constant force even if the stakes have different shapes and dimensions.

While the clamper 8 is holding the stake, the stake guide 14 is raised to the stake receiving position.

Although the receiving position is not shown, it is preferable to set it near the stopper 5.

After the second stake from the bottom is held by the clamper 8, each stopper 5 provided on the inside of the chute 3, 4 is moved back as shown by arrow c in FIG. As a result, the lowest stake is released and falls under its own weight, and the recessed portion 1a (see FIG. 2) of the stake is guided by the tapered surface 14b of the stake guide 14 and fitted into the guide portion 14a, and the stake 1 The open end surface of the stick contacts the stake receiving portion 14d to prevent it from sliding down and is supported in that position. At that time, the guide portion 14a of the stake guide 14 is connected to the concave portion 1 of each stake.
Width narrower than the minimum inner width W _2nio of a
t ₂ , even if the stakes have different widths in the recessed portion 1a, they can be stably fitted, and the center of the recessed portion of the stake can be positioned to substantially coincide with the center of the receiving portion 14d.

(See Figure 3) After the stake guide 14 receives the stake 1' at the position indicated by the imaginary line, the IC stored in the stake 1' is ejected from the outlet on the chute 3 side. It slides over the receiving part 14d and is fed to the next process. At this time, the stake receiving portion 14d
is formed at a step ΔH that is less than or equal to the minimum wall thickness Tmin of the recesses 1a of the various stakes,
In addition, there is a chamfer on the edge of the contact area with the end face of the stake.
4e, the passing IC will not get caught and will be smoothly sent out from the stake.

During this time, the stopper 5 is moved forward again, and then the clamper 8 is moved back. As a result, the stake rows loaded on the chute 3, 4 fall onto the stopper 5 due to their own weight. When it falls, the clamper 8 is advanced again to hold the second stake 1 from the bottom, and the bottom stake is separated to prepare for the next fall.

After all the ICs housed in the stakes that have fallen from the stopper 5 have been sent to the next process, the stake guide 14 is lowered in the direction of arrow d in FIG. Place it on top.

At this point, move the ejector 15 to arrow e in FIG.
Advancing in the direction shown by, on the bottom plate 2a of the main body 2,
The empty stake is pushed out, and after pushing out, the ejector 15 is moved back.

During this time, the stake guide 14 is raised again to prepare for the next drop of stakes from the chutes 3 and 4.

According to the stake supply device of this embodiment, by repeating the above-described sequential operations, the stakes stacked on the chute 3 and 4 are supplied one after another, and their stopping positions are determined as described above. Even if various types of stakes with different shapes and dimensions are loaded depending on the manufacturer, they can be smoothly fed and the stakes can be positioned at a position that does not interfere with the ejection and passage of ICs stored in the stakes.

In addition, in the stake supply device of this embodiment,
Since the ejector 15 is provided, the empty stake 1 is automatically pushed out to the outside (in the direction of arrow e shown in FIG. 3).

In addition, in the present invention, the mechanism for separating and dropping the lowest stake among the stakes stacked on the chute 3 and 4 is not limited to the combination of the stopper 5 and the clamper 8 shown in the drawings, but is essentially a combination of the stopper 5 and the clamper 8 shown in the drawings. It suffices if it has the following functions.

Furthermore, regarding the operation of the ejector 15, a detection means is provided to detect when the stake received by the stake guide 14 becomes empty.
It is also possible to operate the ejector in response to a signal from the detection means, or to provide means for issuing an alarm along with the above detection, so that the ejector 15 can be omitted and the empty stakes can be removed manually.

The above explanation has shown the operation of the stake supply device provided on the side that feeds the ICs housed in the stakes to the inspection device 17 (FIG. 6). , 4' are provided below the test device 17, empty stakes 1'' are loaded between the chute 3' and 4', and tested ICs that have passed through the test device 17 are sequentially accommodated in the stakes 1''. In this case, the opening end of the stake 1'' is on the upper side, so the opening end surface and the receiving portion 14d can be moved using the weight of the stake. For example, since contact engagement with the pusher 18 cannot be achieved,
The other end of the stake 1'' is pushed upward diagonally, and the step ΔH of the receiving part shown in Fig. 5 is formed to be greater than the maximum wall thickness Tmax of the stake wall thickness, contrary to the relationship described above. Bye.

[Effect of idea]

According to the present invention described above, the guide grooves of the chute, which form a pair, are formed wider than the maximum width of the various stakes, and the IC discharged from the stake that has fallen from the chute is stored on the exit side or in the stake. At the bottom of the chute on the entrance side of the IC, there is provided a stake guide having a guide portion narrower than the minimum width of the concave portions of the various stakes. The stake guide has a continuous tapered surface and a stake receiving portion that forms a step that prevents the stake fitted in the guide portion from moving in the longitudinal direction, and the stake guide is reciprocated in the vertical direction. Because of its structure, a pair of chute is loaded with various stays of different shapes and dimensions that are uniquely manufactured by IC manufacturers, and each stay is dropped from the chute one by one, and the supplied stays are reliably received. It has the effect of positioning.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of the stake, Figure 2 is a perspective view showing an example of the stay.
The figures are cross-sectional views showing various shapes and dimensions of stakes uniquely manufactured by IC manufacturers, and Figures 3 to 6 show one embodiment of the present invention.
Figure 3 is a perspective view, Figure 4 is an enlarged cross-sectional view showing the exit side of the IC housed in the stake, and the attached state of the surrounding parts. FIG. 6 is an enlarged perspective view of the stake guide portion, and FIG. 6 is a side view showing how the stake supply device according to the present invention is attached to other related devices. 1', 1''... Fallen from the chute and supplied stay, 2... Main body for attaching various parts, 3,
4, 3', 4'... Chute, 3a, 4a... Guide portion for stake, 5... Stopper, 8... Clamper, 14... Stake guide, 14a...
Guide part of the stake guide, 14d...the same stake receiving part, 14e...the same chamfered part.

Claims (1)

[Claims for Utility Model Registration] A DIP type in which two stakes for a DIP IC are stacked up by fitting into the guide grooves of a pair of chute, and the lowest stakes of this stack row are separated one by one and supplied. In the IC stake supply device, each of the guide grooves of the pair of chute is formed wider than the maximum width of the various stakes, and various types of sticks are placed below the chute on the IC passage port side of the stake that has fallen from the chute. A stake guide 14 is provided which has a guide portion 14a formed to have a width narrower than the minimum width of the recessed portion of the stake.
It has a tapered surface 14b continuous above the guide part 14a, and has a stay receiving part forming a step (ΔH) that prevents the stay fitted to the guide part 14a from moving in the longitudinal direction thereof, and the above-mentioned A DIP characterized in that the stake guide 14 has a structure in which it is driven reciprocally in the vertical direction.
Stakes supply device for type IC.