JPH0637348Y2 - Electronic component inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to an inspection device for electronic parts, and in particular, an unfinished electronic part before mounting a lead frame can be installed in four directions, up, down, left and right. The present invention relates to an electronic component inspection device suitable for inspection.

(Prior Art) Conventionally, a circuit board on which various electronic components are mounted has been widely tested for electrical conduction. However, if a defective electronic component exists, a wasteful process such as component replacement is required. For,
A method of preliminarily inspecting a single electronic component such as an IC before mounting has been adopted.

By the way, conventionally, as a method of inspecting a single electronic component, after mounting the lead frame, a large number of contact pins are brought into contact with the upper and lower surfaces of the lead frame.

(Problems to be Solved by the Invention) However, in the above-described conventional inspection method, if a defect is found by inspection, there is a problem that an extra work is required only in the step of attaching the lead frame.

Therefore, in some cases, attempts have been made to inspect unfinished electronic parts before mounting the lead frame, but in the state of such components, it is not possible to inspect one side or two sides above and below like a completed electronic part. First of all, it is necessary to inspect the IC from the top, bottom, left and right.

The present invention has been made in view of the current situation, and is
It is possible to inspect the parts to be inspected simultaneously from the left and right directions, for example, greatly improving the inspection efficiency of unfinished ICs,
An object of the present invention is to provide an inspection device for electronic parts that can eliminate waste.

[Constitution of device]

(Means for Solving Problems) The present invention includes a slide base arranged on a base, and a mount mounted on the slide base so as to be vertically movable and constantly urged upward by spring pressure. , A holding table provided on the mounting table for removably positioning and fixing the inspected component, a lower pin board mounted on the slide base, and a large number of the lower pin boards planted upward. An upward contact pin whose tip comes into contact with the lower surface of the component to be inspected when the mount is lowered, and a pair of horizontal pin boards that are arranged on both sides of the holding platform and can be displaced in the perspective direction relative to the component to be inspected on the mount. And a spring that urges each of these horizontal pinboards away from the holding base,
A large number of lateral pin boards are planted in each lateral pin board, and each lateral pin board approaches the holding table against the urging force of the spring, and the tip of each lateral contact pin contacts the side surface of the inspected part. Upper pin board that can be moved up and down in a position, a number of downwardly planted contact pins on this upper pin board, and the downward contact pin whose tip contacts the upper surface of the inspected part when the upper pin board descends; It is provided with an interlocking mechanism which is operated by lowering the board to bring each of the lateral pin boards closer to the holding table.

(Operation) In the electronic component inspection apparatus according to the present invention, the upper pin board is arranged above the holding base for positioning and fixing the inspection target component on the mounting base. Then, by lowering the upper pinboard, the tips of the downward contact pins, which are planted in large numbers on the upper pinboard, come into contact with the upper surface of the inspected component.

When the tip of the downward contact pin comes into contact with the upper surface of the inspected part, the mounting base moves down against the spring pressure, and this lowering causes the tips of the upward contact pins planted on the lower pin board fixed to the slide base. , It contacts the lower surface of the inspected part that has descended together with the mounting base. At the same time, the interlocking mechanism operates due to the lowering of the upper pin board, the pair of horizontal pin boards approach the holding table, and the tips of the lateral contact pins implanted in each horizontal pin board are Touch each side. As a result, the contact pins come into contact with the component to be inspected from the top, bottom, left, and right directions, and the unfinished IC before mounting the lead frame
Even in such cases, the inspection can be efficiently performed.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a hand-type inspection device as an example of the inspection device for electronic parts according to the present invention, and FIG. 2 is a partial sectional front view seen from the left in FIG. , 1 is the base of the inspection device.

At the right end of this base in FIG.
The lever support member 3 is fixed to the column 2 so that the vertical position can be adjusted so as to project forward from the column 2.

A rack shaft 5 which is driven up and down by a rotating operation of a lever 4 is attached to the front end portion of the lever support member 3 so as to pass through in the vertical direction, and an upper end portion of the rack shaft 5 has a large diameter. The stopper 6 is integrally provided.

The rack shaft 5 is adapted to interlock with the lever 4 by meshing with a spur gear (not shown) provided on a support shaft of the lever 4 and a rack surface (not shown) formed on the rack shaft 5. 1 is temporarily fixed by the temporary fixing mechanism 7 attached to the front surface of the lever supporting member 3 in the lowest position where the stopper 6 contacts the upper surface of the lever supporting member 3 as shown by the chain line in FIG. There is.

The temporary fixing mechanism 7 includes a mounting member 8 mounted on the front surface of the lever supporting member 3 and an operating member 9 mounted on the mounting member 8 so as to be slidable in the left-right direction in FIG. The actuating member 9 is biased rightward in the figure by the spring 10 to a position where the stopper 9a of the actuating member 9 contacts the mounting member 8. In this state, the claw 9b of the actuating member 9 reaches the position below the stopper 6 of the rack shaft 5. It is protruding. Then, the claw 9b comes into contact with the stopper 6 due to the lowering of the rack shaft 5 and retracts into the mounting member 8 against the urging force of the spring 10, and after passing through the stopper 6, re-projects by the urging force of the spring 10 and stops. It is designed to hold the upper surface of.

A central shaft 12 provided on the upper surface of the mounting plate 11 is fixed to the lower end of the rack shaft 5, and the lower surface of the mounting plate 11 is
As shown in FIGS. 1 and 2, an upper pin board 14 in which a large number of downward contact pins 13 are planted is attached.

On the upper surface of the mounting plate 11, as shown in FIG. 1, a slide shaft 16 in the up-down direction is provided upright on an upper base 15 which will be described later.
The mounting plate 11 is guided up and down along the slide shaft 16. In addition, the positioning pin 18 is provided on the lower surface of the mounting plate 11.
Is projected downward, and the positioning pin 18 is lowered by the lower pin board 14 into the positioning holes 15a and 19a provided in the upper base 15 and the slide base 19 slidably mounted on the upper surface thereof. The slide base 19 is inserted and positioned.

As shown in FIGS. 1 and 2, the upper base 15 is integrally installed on the lower base 21 via the pedestals 20 at the four corners, and the lower base 21 is on the base 1. It is fixed to.

As shown in FIG. 2, the slide base 19 of the upper base 15 uses the pressing plates 22 installed on both sides thereof as a guide to move forward,
That is, it can be pulled out to the left in FIG. As shown in FIG. 1, a handle 23 for pulling out is provided on the front end surface of the slide base 19.

On the upper surface side of the slide base 19, as shown in FIG. 1, FIG. 2 and FIG. 4, a mount 25 is arranged so as to be vertically movable by a constant stroke through, for example, four slide columns 24, The mounting base 25 is constantly pressed upward by, for example, four coil springs 26 interposed between the mounting base 25 and the slide base 19, and is in a state of being lifted from the upper surface of the slide base 19.

As shown in FIGS. 3 and 4, a holding base 28 for positioning and fixing an unfinished electronic component 27 is fixedly mounted on the upper surface of the mounting base 25 at the center in the left-right direction.

The slide base 19 has a second
As shown in FIGS. 4 and 5, a lower pin board 29 is fixed, and a large number of upward contact pins 30 are planted in the lower pin board 29.

As shown in the right half of FIG. 4, each of the upward contact pins 30 has a tip end of the electronic component 27 when the mount 25 is lifted from the slide base 19 by the urging force of the coil spring 26. When the mount 25 is in a state of being separated from the lower surface and the mount 25 descends against the biasing force of the coil spring 26 and is in close contact with the slide base 19 as shown in the left half of FIG. The tip is in contact with the lower surface of the electronic component 27.

On the other hand, on both sides of the holding table 28, as shown in FIG.
As shown in the figure, a pair of horizontal pinboards 31, 31 each having a generally U-shaped plan view are arranged, and each horizontal pinboard 31 is shown in FIGS. 1, 3, and 5. Guide plate is fixed to the mounting base 25 so that the mounting base
It is adapted to move forward and backward with respect to the holding table 28 in the lateral direction on 25.

As shown in FIG. 3 and FIG. 4, a large number of lateral contact pins 33 are planted in the lateral pin boards 31, respectively, with their tips facing inward. Each lateral contact pin 33 has various pins. When the board 31 is guided by the pressing plate 32 and approaches the holding table 28, the tips thereof come into contact with the left and right side surfaces of the electronic component 27, respectively.

As shown in FIG. 3, coil springs 34 for biasing the horizontal pin boards 31 in the direction away from the holding base 28 are respectively interposed between the horizontal pin boards 31 and the holding base 28. As shown in FIGS. 3 to 5, the mounting bases 25 are respectively mounted with position regulating plates 35 for regulating the distance between the horizontal pin boards 31 and the holding base 28.

Further, a follower 36 made of, for example, a roller is rotatably attached to the lateral outer end of each lateral pinboard 31,
As shown in FIGS. 2 and 4, each follower 36 is provided with a cam 37 projecting downward at both end portions of the upper pin board 14.
However, the upper pinboard 14 is brought into contact with each other by lowering. By this contact, each lateral pin board 31 approaches the holding base 28 against the biasing force of the coil spring 34, and the tip of each lateral contact pin 33 comes into contact with the electronic component 27. That is, the follower 36 and the cam 37 constitute an interlocking mechanism for actuating each lateral pinboard 31 by lowering the upper pinboard 14.

As shown in the left half of FIG. 4, when the follower 36 and the cam 37 come into contact with the lower surface of the upper pin board 14 and the lateral contact pin 33 comes into contact with the electronic component 27, the lateral pin board 31
One presser 38 is provided corresponding to each lateral pin board 31 for pressing the upper surface of the and fixing it on the mounting base 25.
The retainer 38 also serves as a safety member that prevents overload on the downward contact pin 13.

Next, the operation of this embodiment will be described.

Before inspecting the electronic component 27, as shown in FIG. 1, the rack shaft 5 is in a state of being raised by the urging force of a return spring (not shown) incorporated in the lever support member 3, and is also mounted. The table 25 is in a state of being lifted from the slide base 19 by the biasing force of the coil spring 26, as shown in the right half of FIG. Further, the positioning pin 18 is in a state of being pulled out from the positioning holes 16a, 19a of the upper base 15 and the slide base 19 as shown in FIG. 1, so that the slide base 19 can be pulled out forward. It is in a state.

When inspecting the electronic component 27 in such a state, first, the handle 23 is grasped and the slide base 19 is pulled out forward,
The electronic component 27 is set on the holding base 28 on the slide base. After that, the slide base 19 is returned to the state shown in FIG.

Next, the lever 4 is rotated counterclockwise in FIG. Then, the rack shaft 5 descends, and the upper pin board 14 and the positioning pins 18 begin to descend. Then, first, the lower end of the positioning pin 18 is inserted into the positioning holes 15a and 19a to position the slide base 19, and the lower end of the cam 37 contacts the follower 36.

When the cam 37 contacts the follower 36, each lateral pin board 31 approaches the holding base 28 against the biasing force of the coil spring 34, and the tip of each lateral contact pin 33 eventually contacts the left and right side surfaces of the electronic component 27. Contact each other.

When the upper pin board 14 further descends from this state, the tips of the downward contact pins 13 come into contact with the upper surfaces of the electronic components 27 and the pressers 38 come into contact with the upper surfaces of the lateral pin boards 31. Then, when the upper pin board 14 is further lowered, the mounting base 25 is lowered against the urging force of the coil spring 26, and eventually comes into close contact with the upper surface of the slide base 19.

When the mounting base 25 comes into close contact with the upper surface of the slide base 19, the fourth
As shown in the left half of the figure, the tip of the upward contact pin 30 contacts the bottom surface of the electronic component 27, and each horizontal pin board
31 is clamped from above and below by the presser 38 and the mounting base 25 to be fixed in position. The rack shaft 5 is prevented from rising by the stopper 6 at the upper end thereof engaging with the temporary fixing mechanism 7, as shown by the chain line in FIG. Therefore, even when the lever 4 is released, the state shown in the left half of FIG. 4 is maintained. Therefore, the electronic component 27 is inspected.

When the inspection of the electronic component 27 is completed, the actuating member 9 of the temporary fixing mechanism 7 is slid to the left in FIG. Then, the engagement between the claw 9b and the stopper 6 is released, and the rack shaft 5
Returns to the state shown by the solid line in FIG. As a result, the other members also return to the state before the inspection.

In this way, the contact pins 13, 30, 33 can be brought into contact with the electronic component 27 from the four directions of up, down, left, and right. Therefore, even if the electronic component 27 is an unfinished IC before mounting the lead frame, Can be surely inspected.

Although the case where the electronic component 27 is an unfinished IC has been described above, any electronic component that needs to be inspected from four directions can be similarly applied.

[Effect of device]

As described above, according to the present invention, contact pins are brought into contact with the upper and lower surfaces of the component to be inspected and the left and right side surfaces thereof so that the component to be inspected can be inspected from four directions. Even an unfinished IC or the like can be inspected easily and surely, the inspection efficiency can be greatly improved, and the waste of the process can be eliminated.

[Brief description of drawings]

FIG. 1 is a side view of an electronic component inspection apparatus showing an embodiment of the present invention, FIG. 2 is a partial cross-sectional front view of the main part of FIG. 1 seen from the left, and FIG. III-III line enlarged partial sectional view,
FIG. 4 is an enlarged view of a main part of FIG. 2, the right half shows a state before inspection, the left half shows a state during inspection, and FIG. 5 is a right side view of FIG. 5 …… Rack shaft, 13 …… Downward contact pin, 14 ……
Upper pin board, 15 …… Upper base, 19 …… Slide base,
22,32 …… Presser plate, 24 …… Slide support, 25 …… Mounting base, 26,34 …… Coil spring, 27 …… Electronic parts, 28
...... Holder, 29 ...... Lower pin board, 30 ...... Upward contact pin, 31 ...... Horizontal pin board, 33 ...... Horizontal contact pin, 36 ...... Follower, 37 ...... Cam.

Claims (3)

[Scope of utility model registration request] 1. A slide base disposed on a base, and b. A mount mounted on the slide base so as to be vertically movable and biased by spring pressure so as to always float upward. , C. A holding table provided on this mounting table for removably positioning and fixing the inspected parts, d. A lower pin board mounted on the slide base, and e. Facing downward on this lower pin board. And the contact pins are placed on both sides of the holding base, and the mounting bases are placed in the perspective direction with respect to the parts to be inspected. A pair of displaceable horizontal pinboards, g. Springs that urge each of these horizontal pinboards away from the holding base, and h. A holding stand against urging force By bringing them close to each other, the tip of each contact contacts the side surface of the inspected part, and i. The upper pin board that can be moved up and down above the holding table, and j. And a downward contact pin whose tip contacts the upper surface of the component to be inspected when the upper pinboard descends, and k. Interlocking to move each of the horizontal pinboards closer to the holding base, which is operated by lowering the upper pinboard. An inspection device for electronic parts, comprising: a mechanism. 2. A device for inspecting electronic parts according to claim 1, wherein the slide base is slidable in a direction orthogonal to the facing direction of the pair of horizontal pinboards. 3. The interlocking mechanism includes followers attached to the outer ends of the respective horizontal pin boards, and downwardly projecting ends of the upper pin boards at both ends of the upper pin boards. The electronic device inspection apparatus according to claim 1 or 2, further comprising: a cam that comes into contact with and presses it inward.