JPH0569190B2 - - 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 can only be mounted on one side, resulting in the problem of low mounting density of electrical components.

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 measuring section 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 IC5's guide groove 2 on the bottom surface.
4 and the elevating means A of the elevating roof guide part 2, which opens and closes below the elevating roof guide part 2 located at the top dead center, and the elevating roof guide part 2 is located at the top dead center. keep it closed between
A pair of movable rail parts 4 that support the IC 5 and are open while the elevating roof guide part 2 moves up and down, and an opening/closing means B for the movable rail part 4, and immediately before the elevating roof guide part 2 descends from the top dead center. It rises and clamps the IC5 between it and the elevating roof guide section 2, moves up and down between the top dead center and the bottom dead center together with the elevating roof guide section 2 while being held, and then descends after the elevating roof guide section 2 completes its ascent. An IC abdominal support part 6 that releases the clamping state of the IC, an elevating means C for the IC abdominal support part 6, and an elevating roof guide part 2 are provided so as to be movable up and down.
It moves downward and protrudes from the guide groove 24 before the IC is supplied.
A stopper 7 that determines the stop position of the IC5 and moves upward and retracts from the guide groove 24 to free the IC5 when the IC5 is ejected at the top dead center, and a vertical movement means D for the stopper 7 are provided at the IC measurement position. A socket equipped with a measurement contact 35 in which the lead 8 of the IC 5 engages to measure the electrical characteristics of the IC 5 when the IC stops at the bottom dead center, and the lead 8 of the IC 5 separates when the IC rises from the bottom dead center. 1.

[Effect]

When measuring the electrical characteristics of the IC 5, the elevating roof guide section 2 and the pair of movable rail sections 4 are at the top dead center, and the pair of movable rail sections 4 are in a closed state.
Further, the stopper 7 is in a state of protruding from the guide groove 24.

When the IC 5 is supplied to the measuring section 13 in this state, the IC 5 slides on the pair of movable rail sections 4 between the guide groove 24 of the elevating roof guide section 2 and the pair of movable rail sections 4. It collides with the stopper 7 and stops (see Figure 1).

Next, the IC belly support part 6 is raised from the bottom dead center to the top dead center by the lifting means C, and the IC 5 is held between the guide groove 24 of the elevating roof guide part 2 and the IC belly support part 6 (see FIGS. 3a and 3). (See Figure 4 b). After that, the pair of movable rail parts 4 are opened by the opening/closing means B.
It comes off from IC5 (see Figure 4b).

Next, when the elevating roof guide part 2 is lowered from the top dead center to the bottom dead center by the elevating means A and stopped,
The IC belly support part 6 also lowers from the top dead center to the bottom dead center by the lifting means C while holding the IC5 between it and the guide groove 24, and engages the lead 8 of the IC5 with the measurement contact 35 of the socket 1. Then, measure the electrical characteristics of IC5 (see FIGS. 3b and 4c).

When the measurement is completed, when the elevating roof guide part 2 is raised from the bottom dead center to the top dead center by the elevating means A and stopped, the IC belly support part 6 also moves to the elevating means C while holding the IC 5 between it and the guide groove 24. It rises from bottom dead center to top dead center and stops. Next, the pair of movable rail parts 4 are closed by the opening/closing means B to support the IC 5.

Thereafter, the IC abdominal support portion 6 is lowered from the top dead center to the bottom dead center by the lifting means C. Next, when the stopper 7 is moved upward by the vertical movement means D, the stopper 7
is retracted from the guide groove 24, freeing the IC5. The free IC 5 will slide down from the pair of movable rail sections 4 due to its own weight and be discharged.

〔Example〕

FIG. 1 is a front 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, 9 is a loader, as shown in Fig. 5b.
A magazine 19 filled with IC5 is loaded.
Reference numeral 10 denotes an IC supply device that supplies the magazines 19 one by one from the loader 9 to the tilting arm 20. By tilting the tilting arm 20, the ICs 5 in the magazine 19 are slid down into the supply chute 12. 11 is IC5 that slipped into supply chute 12
This is an individualization device that individualizes IC5.
is supplied to the measuring section 13 according to the present invention. 14 is a test station, and 15 is an operating section.

The measurement unit 13 measures the electrical characteristics of the supplied IC 5. After the measurement, the ICs 5 are discharged into a classification chute 17, classified according to their characteristics, slid into a predetermined unloader 16, and stored in an empty magazine 19.
Note that 18 is a pedestal.

Next, the configuration of an embodiment of the measuring section 13 of the present invention disposed between the supply chute 12 and the sorting chute 17 in such an IC handler will be described in detail with reference to FIG.

In Fig. 1, 2 is an elevating roof guide section that moves up and down between two stopping points: top dead center, which is the IC supply/discharge position, and bottom dead center, which is directly above the IC measurement position.
A guide groove 24 is provided that matches the shape of the back of the camera. The lower ends of the pair of elevating shafts 23 passing through the base 21 are connected to the elevating roof guide section 2, and the upper ends thereof are connected by an elevating shaft connecting bar 31. A roof drive cylinder 22 is connected between the connection bar 31 and the base 21.

The cylinder 22, the pair of elevating shafts 23, the connecting bar 31, and the like constitute elevating means A for the roof guide portion 2.

Reference numeral 4 denotes a pair of movable rail parts that are opened and closed below the elevating roof guide part 2, and while the elevating roof guide part 2 is located at the top dead center, it remains closed and supports the IC5.
It is open while the elevating roof guide section 2 is ascending and descending,
In the open state, the support of IC5 is released.
The pair of movable rail parts 4 are provided at the lower ends of the pair of swing arms 27, and the pair of swing arms 2
7 is pivotally supported on a base 21. The ends of the pair of swing arms 27 are connected to an opening/closing cylinder 37 attached to the base 21 by a link mechanism 38.
This allows the pair of movable rail sections 4 to be opened and closed. The pair of swing arms 27, the opening/closing cylinder 37, the link mechanism 38, etc. constitute an opening/closing means B for the pair of movable rail sections 4.

Reference numeral 6 denotes an IC belly support part that moves up and down between the top dead center and the bottom dead center together with the elevating roof guide part 2, and rises just before the elevating roof guide part 2 descends from the top dead center to move the IC5 to the elevating roof guide part 2. After the elevating roof guide section 2 completes its ascent, it descends to release the IC 5 from the sandwiched state.

This IC belly support part 6 has a shape as shown in FIG. It has a protrusion 34. In this embodiment, the lead 8 is provided on the four sides of the IC 5, but the invention is not limited to this, and the escape hole 32 and the escape groove 33 can be engaged in accordance with the lead 8. Become.

Both ends of the IC belly support part 6 are connected to a pair of elevating shafts 28 through which the base 21 and elevating shaft connecting bar 31 are inserted.
This pair of elevating shafts 2 are attached to the lower end of the
The upper end of 8 is connected to a shaft connecting bar 29. A belly support lifting cylinder 30 attached to the shaft connecting bar 29 is connected to an lifting shaft connecting bar 31. A pair of lifting shafts 28, a shaft connecting bar 29, and a belly support lifting cylinder 30
etc. constitute the elevating means C of the IC abdominal support portion 6.

A stopper 7 is provided in the through hole 26 of the elevating roof guide section 2 so as to be movable up and down, and before the IC is supplied at the top dead center, it moves downward and projects from the guide groove 24 to determine the stop position of the IC 5, When the IC is ejected at a point, it moves upward and sinks into the guide groove 24 to free the IC 5. Reference numeral 39 denotes means for vertically moving the stopper 7 provided on the upper surface of the roof guide portion 2, such as a stopper driving cylinder.

1 is a socket provided at the IC measurement position, and when the IC stops at the bottom dead center, the lead 8 of IC 5 is connected to the curved part 3.
6 to measure the electrical characteristics of the IC 5, and the lead 8 of the IC 5 separates from the curved portion 36 when the IC 5 rises from the bottom dead center. A notch is formed on the upper surface of the socket 1 to match the shape of the IC belly support 6.

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 2 and the pair of movable rail sections 4 are located at the top dead center, and the roof guide section 2 is located at the fixed roof section 25.
The movable rail section 4 is connected to the fixed rail section, and the pair of movable rail sections 4 are in a closed state.
Further, the stopper 7 is in a state of protruding from the guide groove 24.

When the IC 5 is supplied to the measuring section 13 by the supply chute 12 in this state, the IC 5 is placed between the guide groove 24 of the elevating roof guide section 2 and the pair of movable rail sections 4 on the pair of movable rail sections 4. The vehicle slides down, collides with stopper 7, and stops (see Figure 1).

Next, the abdominal support lifting cylinder 30 is operated, whereby the IC abdominal support part 6 rises from the bottom dead center to the top dead center via the connecting bar 29 and the pair of lifting shafts 28, and guides the lifting roof guide part 2. groove 24 and
The IC 5 is held between the IC belly support part 6 (see FIGS. 3a and 4b). After that, open/close cylinder 3
7 is activated, thereby opening the pair of swing arms 27 via the link mechanism 38, opening the pair of movable rail parts 4, and releasing the support of the IC 5 (Fig. 3a).
reference). The roof drive cylinder 22 is then actuated,
As a result, the connecting bar 31 and the pair of lifting shafts 23
After that, the elevating roof guide section 2 descends from the top dead center to the bottom dead center and stops. At the same time, the lifting cylinder 30 operates, and as a result, the IC abdominal support part 6 also moves below the top dead center via the connecting bar 29 and the pair of lifting shafts 28 while holding the IC 5 between it and the guide groove 24. It descends to the dead center and stops (see Figures 3b and 4c).

When the elevating roof guide part 2 and the IC belly support part 6 stop at the bottom dead center, the lead 8 of the IC 5 engages with the curved part 36 of the measurement contact 35 of the socket 1 (see Fig. 3b and Fig. 4c). reference). Next, the lead 8 of the IC 5 is energized through the measurement contact 35 to measure the electrical characteristics.

When the measurement is completed, the roof drive cylinder 22 operates in the opposite direction, thereby causing the lifting roof guide part 2
When raised from bottom dead center to top dead center and stopped,
The IC belly support part 6 is also raised from the bottom dead center by the belly support lifting cylinder 30 via the connecting bar 29 and the pair of lifting shafts 28 to remove the IC 5 from the socket 1, and then the IC belly support part 6 is moved into the guide groove 24. While holding the IC5 between them, it rises to top dead center and stops (see Figures 3a and 4a). Next, the opening/closing cylinder 32 operates in the opposite direction to close the pair of movable rail sections 4 via the link mechanism 38, and the IC
5 (see Figures 1 and 4a).

Thereafter, the abdominal support lifting cylinder 30 operates in the opposite direction, thereby lowering the IC abdominal support part 6 from the top dead center to the bottom dead center via the connecting bar 29 and the pair of lifting shafts 28. Next, the stopper drive cylinder 39 operates in the opposite direction, thereby causing the stopper 7 to move upward, so that the stopper 7 is retracted from the guide groove 24 and the IC 5 is freed. The IC5, which is now free, uses its own weight to move the pair of movable rails 4
It will slide down further and be discharged into the sorting chute 17.

In addition, the elevating means A, the opening/closing means B, the elevating means C, and the vertically moving means D in the present invention are not limited to the structures of the embodiments.

〔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 bottom dead center directly above the IC measurement position, the elevating roof guide part 2 and the IC belly support part 6
IC5 is held between them and raised and lowered, and lead 8 of IC5 is connected to measurement contact 35 of socket 1 at the IC measurement position.
Since the IC 5 can be engaged or detached from the socket 1, even if the leads 8 are provided on all four sides of the IC 5, the IC 5 can be freely attached to and detached from the socket 1.
Not only can the electrical characteristics of the IC5 be measured, and it can also be applied to new-shaped PLCC type ICs, but also because the pair of movable rails 4 are held open while the IC5 is being raised and lowered. , there is no risk of interfering with the raising and lowering of IC5.

[Brief explanation of the drawing]

Fig. 1 is a front 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 Fig. 3 a and b are respectively 4th sectional view showing the state before and when the IC is mounted on the socket according to the present invention;
Figures a to c are perspective views showing the state before starting to insert the IC into the socket, the state in the middle of it, and the state at the time of mounting, respectively. Figures a and b are perspective views of a conventional DILP type IC, respectively. Newly introduced PLCC
FIG. 3 is a perspective view of the type IC seen from below. 1...Socket, 2...Elevating roof guide section, 4
...Movable rail part, 5...IC, 6...IC belly support part, 7...stopper, 8...lead, 13...measuring part, 22...roof drive cylinder, 23...lifting axis, 24... ... Guide groove, 27 ... Swing arm, 2
8... Lifting shaft, 29... Shaft connection bar, 30... Belly support lifting cylinder, 31... Lifting shaft connection bar, 35... Measuring contact, 36... Curved portion, 37... Opening/closing cylinder, 38... Link mechanism, 39... Stopper drive cylinder, A... Lifting means for the elevating roof guide section 2, B... Opening/closing means for the movable rail section 4, C... Lifting/lowering means for the IC belly support section 6, D... ...Means for vertically moving the stopper 7.

Claims (1)

[Claims] 1 Move up and down between two stopping points: top dead center, which is the IC supply/discharge position, and bottom dead center, which is directly above the IC measurement position, and then
An elevating roof guide section 2 having an IC5 guide groove 24 and elevating means A for the elevating roof guide section 2;
It opens and closes below the elevating roof guide section 2 located at the top dead center, maintains the closed state and supports the IC 5 while the elevating roof guide section 2 is located at the top dead center, and while the elevating roof guide section 2 moves up and down. a pair of movable rail parts 4 that are opened and an opening/closing means B for the movable rail parts 4;
Immediately before the elevating roof guide section 2 descends from the top dead center, it rises and clamps the IC5 between it and the elevating roof guide section 2, and while it is being held, moves up and down between the top dead center and the bottom dead center together with the elevating roof guide section 2. Then, after the elevating roof guide section 2 completes its ascent, it descends to release the IC from being clamped.
The IC belly support part 6, the elevating means C of the IC belly support part 6, and the elevating roof guide part 2 are provided so as to be movable up and down, and the guide groove 2 moves downward before the IC is supplied at the top dead center.
A stopper 7 protrudes from the guide groove 24 to determine the stop position of the IC5, moves upward when the IC5 is ejected at the top dead center, and retracts from the guide groove 24 to free the IC5, and a vertically moving means D for the stopper 7; When the IC is stopped at the bottom dead center, lead 8 of IC5 is installed at the measurement position.
The socket 1 is equipped with a measuring contact 35 that engages to measure the electrical characteristics of the IC 5, and the lead 8 of the IC 5 separates as the IC rises from the bottom dead center.
Measurement part of IC handler.