JPH0241919Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention supplies the ICs in the filled magazine from a loader to the measuring section, checks the electrical characteristics in the measuring section, and classifies the checked ICs according to their characteristics. The present invention relates to an IC handler that stores ICs in an empty magazine of an unloader and transfers the empty magazine generated in the loader to the unloader, and particularly relates to a detection mechanism for detecting residual ICs in the empty magazine to be transferred to the unloader.

[Conventional technology]

When automatically transferring empty magazines generated by the loader to the unloader,
The premise is that no IC remains. Otherwise, ICs whose characteristics have not been checked will be sent to the unloader and mixed in with ICs whose characteristics have been checked.

In order to avoid mixing unchecked ICs into checked ICs, it is necessary to detect whether or not there are any ICs remaining in the empty magazine, and if any, remove the remaining ICs.

In the conventional mechanism, for example, as shown in FIG. 6, a reflective residual IC detector 7 is installed above the empty magazine transfer path 8 to detect whether or not IC 6 remains in the magazine 1 that is being transferred. Ta.

[Problem that the invention attempts to solve]

However, in the above conventional example, when the magazine 1 is made of aluminum, there is almost no warpage or bending, but when it is made of plastic, the magazine 1 is warped or bent considerably, and the flat transfer surface 9 as shown in FIG. If the magazine 1 were to slide down, the height of the bottom surface of the magazine 1 would gradually change, causing the reflection position to change, causing misjudgment.

The present invention was devised in view of the drawbacks of the conventional examples, and its purpose is to provide a mechanism for detecting residual ICs in an empty magazine that does not cause false judgments even if the magazine is warped or bent. is to provide.

[Means for solving problems]

In order to solve the above-mentioned problems and achieve the above-mentioned purpose, the mechanism of the present invention is designed to transfer empty magazines 1 in the transfer process of transferring the empty magazines 1 from the loader 2 to the unloader 13 as shown in FIGS. 1 to 3. Two driven rollers 4 are disposed in parallel below the path 8, and a driving roller 5 for transporting the empty magazine 1 while sandwiching it between the driven rollers 4 is installed above the driven rollers 4 in the empty magazine transfer path. 8 and drive roller 5.
A residual IC detector 7 is provided above the empty magazine transfer path 8 in the vicinity of the empty magazine transfer path 8.

[Effect]

The empty magazine 1 that is being transferred from the loader 2 to the unloader 13 is placed in the middle of the empty magazine transfer path 8.
It is held between two driven rollers 4 and a driving roller 5 and transferred to the unloader 13 side. Then, the inside of the empty magazine 1 is inspected over its entire length by a detector 7 installed near the drive roller 4, and any remaining ICs are detected inside the empty magazine 1.
Detect whether there is or not.

At this time, the empty magazine 1 is moved by two driven rollers 4.
Since the empty magazine 1 is held between the drive roller 5 and the drive roller 5, even if the empty magazine 1 is warped or bent, the empty magazine 1 is transported after being adjusted to the warpage or bending or correcting the warpage or bending. , the focal position of the detector 7 with respect to the empty magazine 1 becomes almost constant, so that no residual IC is missed and the residual IC can be detected reliably.

〔Example〕

First, an overview of the IC handler to which the proposed mechanism is applied will be explained.

FIG. 3 is a front view showing an IC handler to which the mechanism of the present invention is applied, and FIG. 4 is an explanatory diagram of its operation.

In Figures 3 and 4, 2 is a loader loaded with multiple magazines 16 filled with IC6, and 17 is a loader loaded with a large number of magazines 16 filled with IC6.
IC supply device, 18 is a tilting arm, 10 is a measurement unit,
11 is a test head, 12 is a control unit, 13 is an unloader, 14 is an empty magazine transfer device, A is a residual IC detection mechanism of the present invention, and 15 is a stand on which each block is placed.

A large number of filling magazines 16 of the loader 2 are supplied one by one to an IC supplying device 17 installed on the side of the loader 2.
is caught by the tilting arm 18 of the IC supply device 17, tilted at a certain angle, and connected to the supply chute 19. When the connection with the supply chute 19 is completed, the ICs 6 in the filling magazine 16 are supplied to the supply chute 19, and then they are separated and sent one by one to the measuring section 10. The measured IC6 is divided according to its electrical characteristics and sent to the unloader 13.
They will be sorted and stored in the empty magazine 1 prepared at the time.

In this way, the electrical characteristics of the ICs 6 are sequentially checked, and the number of ICs 6 in the magazine 16 supported by the tilting arm 18 gradually decreases until there are no ICs 6 in the magazine 16, but this is immediately detected. Then, the tilting arm 18 is reversely operated to bring it into a horizontal state. Then, the loader arm 20 (see FIG. 4) carrying the IC-filled magazine 16 moves toward the IC supply device 17, pushes the empty magazine 1 out, and at the same time sets the IC-filled magazine 16 on the tilting arm 18. . When the setting of the IC filling magazine 16 is completed, the tilting arm 18
tilts again and feeds the magazine 16 into the supply chute 19.
Connect.

On the other hand, the ejected empty magazine 1 is placed on the elevator 21 of the empty magazine transfer device 14 and lowered, and then transferred to the empty magazine transfer path 8 and transferred to just before the residual IC detection mechanism A of the present invention. The inside of the empty magazine 1 is inspected over its entire length by this detection device A, and if there is any residual IC 6 inside, it will be detected and notified to the operator, and the residual IC 6 will be removed.

Empty magazine 1 with residual 1C removed and residual
Empty magazines 1 in which no ICs have been detected are transferred to the unloader 13 and held at a predetermined position, waiting to accommodate checked ICs.

On the other hand, the IC whose characteristics were checked in the measuring section 10
6 are sequentially sorted according to their characteristics and transferred to the unloader 1.
3, and is stored in the empty magazine 1 waiting at the unloader 13.

In this way, the empty magazine 1 of the unloader 13
The ICs 6 are gradually filled with the ICs 6, and when they are full, they are transferred to the filled magazine storage section 31 of the unloader 13 and loaded one after another. Filling magazine storage section 3
1 in the filling magazine 16, this is notified to the operator and an order is given to transfer it to the next process.

An embodiment of the mechanism of the present invention will be described in detail below.

FIG. 1 is a front view showing an embodiment of the mechanism of the present invention;
FIGS. 2a and 2b are sectional views for explaining the operation.

First, its configuration will be explained.

As shown in the third and fourth figures, the mechanism A of the present invention is installed in the empty magazine transfer path 8 following the elevator lowering position of the empty magazine transfer device 14, and has the following configuration.

That is, as shown in the first figure, two driven rollers 4 are arranged below the empty magazine transfer path 8, and a driving roller 5 is arranged above both driven rollers 4. Both driven rollers 4 have a driven wheel 30 that transmits the rotation of the drive roller 5, and a rubber 22 is attached to the outer periphery of the driven roller 4 (including the outer periphery of the driven wheel 30). Conveyance and contact with the drive roller 5 are ensured. Drive roller 5
For example, it has a shape like a pinwheel,
The magazine 1 is placed between the outer ring 23 facing the driven wheel 30.
The material is designed to fit into the container and be transported without shifting laterally.

The drive roller 5 is rotatably supported on a movable plate 24, and the movable plate 24 is rotatably supported on a base 26 via a rotation shaft 25. 27 is a drive cylinder for rotating the movable plate 24.

A drive motor 28 with a speed reducer is attached to the movable plate 24 so that the drive roller 5 can be rotated via a belt 29. Immediately after the drive roller 5 (of course, it is not limited to this, and may be immediately before)
A reflective residual IC detector 7 is placed at the top.

Next, its effect will be explained.

As mentioned above, the empty magazine 1 generated in the IC supply device 17 is placed on the elevator 21 and lowered.
Next, the empty magazine is transferred to the empty magazine transfer path 8 and remains in the present invention.
It is transferred to just before the IC detection mechanism A. At this time, the drive cylinder 27 rotates the movable plate 24 in the counterclockwise direction in FIG. (See Figure 2a). When the empty magazine 1 is transferred to the residual IC detection mechanism A,
The drive cylinder 27 operates in the opposite direction to push down the drive roller 5, and the empty magazine 1 is now held between the driven rollers 4 and the drive roller 5. At this time,
One outer ring 23 of the drive roller 5 and the driven wheel 30 of the driven roller 4 come into contact, and the driven roller 4 is rotated (see FIG. 2b).

In this way, the empty magazine 1 is held between the rotating drive roller 5 and both driven rollers 4 and transferred to the unloader 13, and the empty magazine is detected by the reflective detector 7 installed immediately after the drive roller 5. 1 will be inspected over its entire length. If there is any remaining IC 6 in the empty magazine 1, the detector 7 detects the reflected light, notifies the operator of this, and instructs the operator to remove the remaining IC 6.

By the way, the empty magazine 1 has two driven rollers 4.
Since the empty magazine 1 is supported by the drive roller 5 and the drive roller 5, even if the empty magazine 1 is warped or curved, the empty magazine 1 will be fed according to the warp or curve (see Fig. 5). Alternatively, the focal position of the detector 7 with respect to the empty magazine 1 remains almost unchanged since the magazine is transported with warpage or bending corrected. That is, as shown in the first figure, the empty magazine transfer path 8 is placed above both driven rollers 4, and
In other words, a perpendicular line H is drawn down from the center of the drive roller 5, and the height h of the empty magazine 1 is approximately equal to the length obtained by subtracting the radius r of the drive roller 5 from the length of the perpendicular line H. 1 warp,
This allows the empty magazine 1 to be transported in accordance with the warping or bending of the empty magazine 1 by correcting the bending, and the focal position of the detector 7 with respect to the empty magazine 1 is almost constant.

After confirming that there is no residual IC6 over the entire length of the empty magazine 1 in this way, the empty magazine 1 is transferred to the unloader 13.
The IC is held at a predetermined position and is on standby to accommodate the checked IC.

[Effect of idea]

As described above, according to the present invention, even if the magazine is warped or bent, the magazine can be transported in accordance with the warp or bend, or the magazine can be transported with the warp or bend corrected. Since the focal position can be kept almost constant, it is possible to reliably prevent detection of residual IC, and there is an advantage that residual IC can be detected reliably.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the mechanism of the present invention;
Figures 2a and b are cross-sectional views for explaining its operation, and Figure 3 is a front view showing an IC handler to which the mechanism of the present invention is applied.
FIG. 4 is an explanatory diagram of its operation, and FIG. 5 is a schematic cross-sectional view for explaining the residual IC detection state of the mechanism of the present invention.
FIG. 6 is a schematic cross-sectional view for explaining a conventional residual IC detection state. A... Residual IC detection mechanism of the present invention, 1... Empty magazine, 2... Loader, 4... Followed roller, 5...
Drive roller, 6...IC, 7...residual IC detector,
8... Empty magazine transfer path, 13... Unloader,
14... Empty magazine transfer device.

Claims (1)

[Scope of utility model registration request] In the transfer process of transferring the empty magazine 1 from the loader 2 to the unloader 13, the empty magazine transfer path 8
Two driven rollers 4 are arranged in parallel below, and a drive roller 5 for transporting the empty magazine 1 while sandwiching it between both driven rollers 4 is provided, and an empty magazine transfer path 8 is formed above both driven rollers 4. The remaining IC is placed above the empty magazine transfer path 8 near the drive roller 5.
A residual IC detection mechanism in an empty magazine is provided with a detector 7.