JPH0569189B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a measurement section of an IC handler that measures the electrical characteristics of an IC, and is particularly applicable to a new shape of an IC with an annularly curved lead. Concerning the measurement section of the IC handler.

[Conventional technology]

The mainstream of conventional ICs has been the DILP type in which the ends of the leads 8a are cut off as shown in FIG. 5a. This DILP type IC 5a is made by drilling a through hole in a printed circuit board (not shown), inserting the lead 8a into the through hole using an automatic machine, soldering the lead 8a to the through hole, and cutting off the excess lead tip. was. However, since the tip of the lead 8a is cut off and easily bent, when the lead 8a is automatically inserted into a through hole in an automated process, the tip of the lead is sometimes bent and cannot be inserted. Furthermore, since the leads 8a are inserted through the through-holes, the printed circuit board cannot be mounted on one side, resulting in the problem that the mounting density of electrical components is low.

Then, IC5, shown in Figure 5b, appeared.
This is called a PLCC type IC, and the tip of the lead 8 is curved into an annular shape and is embedded within the IC body. Since the IC 5 having such a shape is directly soldered to the surface of a printed circuit board (not shown) without using a through hole, the mounting density of the printed circuit board is twice that of the conventional one.

[Problem that the invention seeks to solve]

However, the measuring section of conventional IC handlers
Since the structure was suitable for measuring the electrical characteristics of the DILP type IC 5a, it cannot be applied to the measurement of the electrical characteristics of the PLCC type IC 5, which has a completely different shape from the DILP type IC 5a.

[Means for solving problems]

Therefore, in order to provide a measurement unit of an IC handler that can be applied to a PLCC type IC whose lead is curved in an annular shape, the present invention is designed to , move up and down between the three stopping points of the bottom dead center directly above the IC measurement position, and place the IC on the bottom surface.
an elevating roof guide section 1 having a guide groove 29 of 5; an elevating means A for the elevating roof guide section 1; an elevating block 30 that moves up and down between the top dead center and the middle point in conjunction with the elevating roof guide section 1; The interlocking means B of the lifting block 30 is provided in the lifting block 30, and is opened and closed when the lowering stops at the middle point and when the rising starts, respectively, and is maintained in the closed state during the lifting and lowering and at the top dead center to support the IC5, In the open state, a pair of movable rail sections 2 that release the support of the IC 5, an opening/closing means C for the movable rail sections 2, and an elevating roof guide section 1 are provided so as to be movable up and down. A stopper 3 that protrudes from the guide groove 29 to determine the stop position of the IC 5, moves upward when ejecting the IC at the top dead center, and retracts from the guide groove 29 to free the IC 5, and a vertical movement means D for the stopper 3. and,
A rod-shaped IC support part 6 that moves up and down in conjunction with the elevating roof guide part 1 between the middle point and the bottom dead center and supports the belly 4 of the IC 5, an interlocking means E of the IC support part 6, and a linking means E provided at the IC measurement position. When the IC stops at the bottom dead center, lead 8 of IC5 engages and measures the electrical characteristics of IC5,
The socket 7 is equipped with a measuring contact 9 from which the lead 8 of the IC 5 is detached when the IC rises from the bottom dead center.

[Operation] When measuring the electrical characteristics of the IC 5, the elevating roof guide portion 1 and the pair of movable rail portions 2 are at the top dead center, and the pair of movable rail portions 2 are in a closed state.
Further, the stopper 3 is in a state of protruding from the guide groove 29.

When the IC 5 is supplied to the measuring section 15 in this state, the IC 5 slides on the pair of movable rail sections 2 between the guide groove 29 of the elevating roof guide section 1 and the pair of movable rail sections 2. It collides with the stopper 3 and stops (see Figure 1).

Next, when the elevating roof guide part 1 is lowered from the top dead center to the middle point by the elevating means A and stopped, the elevating block 30 and the pair of movable rail parts 2 provided thereon also sandwich the IC 5 with the guide groove 29. (see Figures 3a and 4a), interlocking means B
Interlockingly, it descends from top dead center to the middle point and stops.

At this time, the IC support part 6 supports the IC5 by contacting the belly 4 of the IC5, and holds the IC5 between the guide groove 29 of the elevating roof guide part 1, while the opening/closing means C of the pair of movable rail parts 2 (see Figures 3a and 4b). Thereafter, when the elevating roof guide part 1 is lowered from the middle point to the bottom dead center by the elevating means A and stopped, the IC support part 6 is also interlocked by the interlocking means E while holding the IC 5 between it and the guide groove 29. It descends to the bottom dead center and stops (see Figures 3b and 4c). When it stops at the bottom dead center, lead 8 of IC5 connects to measurement contact 9 of socket 7.
(see Figures 3b and 4c). Next, the lead 8 of the IC 5 is energized through the measurement contact 9 to measure the electrical characteristics.

When the measurement is completed, when the elevating roof guide part 1 is raised from the bottom dead center to the middle point by the elevating means A and stopped, the IC support part 6 also moves between the guide groove 29 and the elevating roof guide part 1.
While holding the IC5, it is moved up to the middle point by the interlocking means E and stopped. Next, the pair of movable rail parts 2 are closed by the opening/closing means C to support the IC 5. Once this operation is completed, lift the roof guide part 1.
When the lift block 30 and the pair of movable rails 2 are lifted from the middle point to the top dead center by the lifting means A and stopped, the lifting block 30 and the pair of movable rails 2 also rise from the middle point to the top dead center while holding the IC 5 between them and the guide groove 29. Stop. Thereafter, when the stopper 3 is moved upward by the vertical movement means D, the stopper 3 is pulled in from the guide groove 29, thereby freeing the IC5. IC that became free
5 slides down from the pair of movable rail parts 2 due to its own weight and is discharged.

〔Example〕

FIG. 1 is a front sectional view showing an embodiment of the measuring section of the present invention, and FIG. 2 is a front view of an IC handler to which the embodiment of the measuring section of the present invention shown in FIG. 1 is applied.

First, we will explain the IC handler.

In Fig. 2, 11 is a loader, as shown in Fig. 5b.
A magazine 21 filled with IC5 is loaded.
Reference numeral 12 denotes an IC supply device that supplies the magazines 21 one by one from the loader 11 to the tilting arm 22. By tilting the tilting arm 22, the magazines 21 are
The IC 5 inside is slid down into the supply chute 14. 13 is the IC that slipped into the supply chute 14
This is an individualization device that individualizes 5, and individualized IC.
5 is supplied to the measuring section 15 according to the present invention. 16
17 is a test station, 17 is an operating section, and 23 is a base.

The measurement unit 15 measures the electrical characteristics of the supplied IC 5. After the measurement, the ICs 5 are discharged into a sorting chute 19, classified according to their characteristics, slid into a predetermined unloader 18, and stored in an empty magazine 21.
Note that 20 is a pedestal.

Next, the configuration of an embodiment of the measuring section 15 of the present invention disposed between the supply chute 14 and the sorting chute 19 in such an IC handler will be described in detail with reference to FIG.

In Fig. 1, 1 is an elevating roof guide section that moves up and down between three stopping points: top dead center which is the IC supply/discharge position, midway point, and bottom dead center directly above the IC measurement position.
There is a guide groove 2 on the bottom surface that matches the shape of the back of IC5.
9 is provided. The lower end portions of a pair of elevating shafts 27 passing through the base 23 are connected to the elevating roof guide portion 1, and the upper end portions thereof are connected by an elevating shaft connecting bar 28. An elevating sub cylinder 25 is attached to this connecting bar 28, and this sub cylinder 25 is attached to the base 2.
It is connected by a coupling ring 26 to a main cylinder 24 for elevating and lowering which is installed upright at 3. This main and sub cylinder 2
4, 25, a pair of elevating shafts 27, a connecting bar 28, etc. constitute elevating means A of the roof guide portion 1.

30 is the elevating roof guide part 1 between the top dead center and the middle point.
Base 23 is a lifting block that moves up and down in conjunction with the
It is located below. The lower ends of a pair of lifting shafts 34 passing through the base 23 are connected to the lifting block 30, and the upper ends thereof are connected by a shaft connecting bar 35. This connecting bar 35 is supported by the lifting shaft connecting bar 28 of the lifting means A by a height adjustment bolt 36 screwed thereon.
Further, between the base 23 and the lifting block 30, there is a compression spring 4 fitted into a pair of lifting shafts 34.
1 is interposed therebetween, and a movement amount regulating ring 37 is attached to the pair of elevating shafts 34. A pair of elevating shafts 34, a connecting bar 35, a height adjustment bolt 36, a movement restriction ring 37, a compression spring 41, etc. work together with the elevating roof guide section 1 to move the elevating block 30 up and down between the top dead center and the middle point. It constitutes an interlocking means B for causing this. Movement amount regulation ring 37
serves to contact the base 23 and interrupt the interlocking at the middle point.

Reference numeral 2 designates a pair of movable rails that are opened and closed when the descent stops at the middle point and when the ascent begins. They remain closed and support the IC5 during ascent and descent and at the top dead center, and release the support of the IC5 in the open state. It is. The pair of movable rail parts 2 are provided at the lower ends of a pair of swinging arms 31 inserted through the through holes 33 of the elevating roof guide part 1, and the base ends of the pair of swinging arms 31 are pivoted to the elevating block 30. has been done. The pair of swing arms 31 are connected to an opening/closing cylinder 32 attached to the lifting block 30 by a link mechanism 42, so that the pair of movable rail sections 2 can be opened and closed. The pair of swing arms 31, the opening/closing cylinder 32, the link mechanism 42, etc. constitute an opening/closing means C for the pair of movable rail sections 2.

Reference numeral 3 denotes a stopper that is movable up and down in the through hole 38 of the elevating roof guide section 1, and moves downward before the IC is supplied at the top dead center, protrudes from the guide groove 29, and determines the stop position of the IC 5, and stops the IC 5 at the top dead center. When the IC is ejected at a point, it moves upward and sinks into the guide groove 29 to free the IC 5. Reference numeral 39 denotes means for vertically moving the stopper 3 provided on the upper surface of the roof guide portion 1, such as a stopper driving cylinder.

7 is a socket provided at the IC measurement position, and when the IC stops at the bottom dead center, the lead 8 of the IC 5 is connected to the curved part 1.
0 to measure the electrical characteristics of the IC 5, and the lead 8 of the IC 5 separates from the curved portion 10 when the IC 5 rises from the bottom dead center. 6 is the elevating roof guide part 1 between the middle point and the bottom dead center.
A rod-shaped rod that moves up and down in conjunction with the
This is the IC support part. This IC support part 6 is the socket 7
The IC is inserted into a hole in the center of the IC so that it can move vertically.
A support part lifting spring 40 fitted into the support part 6 is interposed. This elevating spring 40 works in conjunction with the elevating roof guide portion 1 to serve as interlocking means E for elevating and lowering the IC support portion 6 between the middle point and the bottom dead center.

Hereinafter, the operation of one embodiment of the measuring section of the present invention will be explained.

When measuring the electrical characteristics of the IC 5, the elevating roof guide section 1 and the pair of movable rail sections 2 are at the top dead center, and the pair of movable rail sections 2 are in a closed state.
Further, the stopper 3 is in a state of protruding from the guide groove 29.

When the IC 5 is supplied to the measurement section 15 by the supply chute 14 in this state, the IC 5 is placed between the guide groove 29 of the elevating roof guide section 1 and the pair of movable rail sections 2 on the pair of movable rail sections 2. The vehicle slides down, collides with stopper 3, and stops (see Figure 1).

Next, the elevating sub-cylinder 25 or the elevating main cylinder 24 operates, whereby the elevating roof guide portion 1 is moved through the connecting bar 28 and the pair of elevating shafts 27.
The machine descends from top dead center to the middle point and stops. At the same time, the connecting bar 35 supported by the height adjustment bolt 36 on the connecting bar 28 and the pair of lifting shafts 3
4, the lifting block 30 and a pair of movable rail parts 2 provided thereon via a pair of swinging arms 31 also hold the IC 5 between the guide groove 29 (Fig. 3a and Fig. 4). (see a), descends from top dead center to the middle point and stops. In this case, compression spring 4
1 expands, and its spring force keeps the height adjustment bolt 36 in contact with the connection bar 28, achieving interlocking action.

When the roof guide part 1 and the movable rail part 2 stop at the middle point, the IC support part 6 contacts the belly 4 of the IC 5 and supports the IC 5 while bending the lifting spring 40.
IC between the guide groove 29 of the elevating roof guide part 1
5, the opening/closing cylinder 32 operates, thereby opening the pair of swinging arms 31 via the link mechanism 42 and opening the pair of movable rail sections 2 (Figs. 3a and 4b). reference). After that, the main cylinder for elevating 24 or the sub cylinder for elevating 25
As a result, the elevating roof guide portion 1 descends from the middle point to the bottom dead center via the connecting bar 28 and the pair of elevating shafts 27 and stops. At the same time as this
The IC support part 6 also comes into contact with the belly 4 of the IC 5, and the guide groove 29
While holding the IC 5 between them, the IC 5 moves down from the middle point to the bottom dead center against the spring force of the lifting spring 40 and stops (see Figures 3b and 4c).

In this case, since the movement amount regulating ring 37 hits the base 23 at the middle point, the connecting bar 35 supported by the height adjustment bolt 36 on the connecting bar 28, the pair of lifting shafts 34, the lifting block 30, the pair of lifting blocks 30, The swing arm 31, the pair of movable rail parts 2, etc. do not move up or down between the middle point and the bottom dead center.

When the elevating roof guide part 1 and the IC support part 6 stop at the bottom dead center, the lead 8 of the IC 5 engages with the curved part 10 of the measurement contact 9 of the socket 7 (the third
(see Figure b and Figure 4c). Then lead 8 of IC5
The electrical characteristics are measured by supplying current through the measurement contact 9.

When the measurement is completed, the elevating main cylinder 24 or the elevating sub-cylinder 25 operates in the opposite direction, thereby raising the elevating roof guide section 1 from the bottom dead center to the middle point and stopping it. is also raised from the bottom dead center by the spring force of the lifting spring 40.
After removing the IC5 from the socket 7, while holding the IC5 between the IC support part 6 and the guide groove 29,
It rises to the middle point and stops (see Figures 3a and 4a). Next, the opening/closing cylinder 32 operates in the opposite direction to move the pair of movable rail sections 2 to the link mechanism 42.
, and supports the IC5 (see Figures 3a and 4a).

When this operation is completed, the elevating sub-cylinder 25 or the elevating main cylinder 24 is operated in the opposite direction, thereby raising the elevating roof guide section 1 from the middle point to the top dead center and stopping it.
0, the pair of swing arms 31 and the pair of movable rail parts 2 also rise from the middle point to the top dead center and stop while holding the IC 5 between them and the guide groove 29.

As a result, supply chute 14 and classification chute 1
The elevating roof guide portion 1 and the pair of movable rail portions 2 are positioned and accurately connected between the movable rail portion 9 and the elevating roof guide portion 1. When this connection is completed, the stopper drive cylinder 39 is operated to move the stopper 3 upwardly and retract it from the guide groove 29, thereby freeing the IC5. The free IC 5 slides down from the pair of movable rails 2 due to its own weight and is discharged into the sorting chute 19.

Note that the elevating means A, the interlocking means B, the opening/closing means C, the vertical movement means D, and the interlocking means E in the present invention are not limited to the structures of the embodiments, and for example, the IC support part 6
The interlocking means E may be driven by a cylinder instead of being driven by a spring, as shown by the imaginary line in FIG.

〔Effect of the invention〕

As described above, according to the present invention, between the top dead center which is the IC supply/discharge position and the middle point on the way, there is a gap between the elevating roof guide part 1 and the pair of movable rail parts 2.
The IC 5 is lifted and lowered while being clamped, and between the middle point on the way and the bottom dead center directly above the IC measurement position, a pair of movable rail sections 2 are held in an open state, and the elevating roof guide section 1 and a rod-shaped IC support section are held open. The IC 5 is held between the terminals 6 and 6 and raised and lowered, and the lead 8 of the IC 5 can be engaged with or detached from the measurement contact 9 of the socket 7 at the IC measurement position.
Even though they are installed on the four sides of IC5, the pair of movable rails 2 do not get in the way and can be easily attached to socket 7.
The IC5 can be freely attached and detached, the electrical characteristics of the IC5 can be measured, and it can also be applied to new shapes of PLCC type ICs.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing an embodiment of the measuring section of the present invention, FIG. 2 is a front view of an IC handler to which the embodiment of the measuring section of the present invention of FIG. 1 is applied, and FIGS. 3 a and b are FIG. 4 is a cross-sectional view showing a state before and when an IC is mounted on the socket according to the present invention, respectively;
Figures a to c are perspective views showing the state before the IC is installed in the socket, the state immediately before installation, and the state during installation, respectively, and Figures 5a and 5b are perspective views of a conventional DILP type IC, respectively. and newly appeared
FIG. 2 is a perspective view of the PLCC type IC seen from below. 1... Lifting roof guide section, 2... Movable rail section, 3... Stopper, 4... Belt, 5... IC, 6
...IC support part, 7...socket, 8...lead,
9... Measuring contact, 10... Curved part, 15... Measuring part, 24... Main cylinder for lifting, 25... Sub cylinder for lifting, 26... Coupling, 27...
Elevating shaft, 28... Elevating shaft connection bar, 29... Guide groove, 30... Elevating block, 31... Swinging arm, 32... Opening/closing cylinder, 34... Elevating shaft, 35... Shaft connecting bar, 36...Height adjustment bolt, 37...Movement regulating ring, 39...
...stopper drive cylinder, 40...support part lifting spring, 41...compression spring, 42...link mechanism, A
...Elevating means for the elevating roof guide section 1, B...Interlocking means for the elevating block 30, C...Movable rail section 2
opening/closing means, D... means for vertically moving the stopper 3, E
... Interlocking means for the IC support section 6.

Claims (1)

[Claims] 1. The elevating roof guide part 1 that moves up and down between three stopping points: the top dead center which is the IC supply/discharge position, the midway point, and the bottom dead center directly above the IC measurement position, and has an IC5 guide groove 29 on the lower surface, and the corresponding elevating roof guide part 1. The lifting means A of the lifting roof guide part 1 and the lifting block 30 that moves up and down between the top dead center and the middle point in conjunction with the lifting roof guide part 1.
Interlocking means B of the lifting block 30, which is provided in the lifting block 30, opens and closes when stopping the descent at the middle point and when starting the ascent, respectively, and keeps the IC5 in the closed state during the ascent and descent and at the top dead center. A pair of movable rail parts 2 that support and release the support of the IC 5 in the open state, and an opening/closing means C for the movable rail parts 2;
It is provided in the elevating roof guide part 1 so as to be able to move up and down, and moves downward and protrudes from the guide groove 29 to determine the stopping position of the IC 5 before supplying the IC at the top dead center.
When the IC is ejected, the IC moves upward and retracts from the guide groove 29.
Stopper 3 that makes 5 free and the stopper 3
A vertical movement means D, a rod-shaped IC support part 6 that moves up and down in conjunction with the elevating roof guide part 1 between the middle point and the bottom dead center and supports the belly 4 of the IC 5, and an interlocking means E of the IC support part 6. , installed at the IC measurement position and at bottom dead center
When the IC stops, lead 8 of IC5 engages to measure the electrical characteristics of IC5, and when the IC rises from the bottom dead center,
A measuring section of an IC handler consisting of a socket 7 equipped with a measuring contact 9 from which a lead 8 of an IC 5 is detached.