JPS6212517A - Separating reversal mechanism for ic - Google Patents

Abstract

PURPOSE:To automate the separating reversal by installing a rotor having a plurality of transport rails in radial form midway on the inclined chute rails, permitting intermittent revolution, in a mechanism for the separating reversal of the PLCC type ICs on the chute rails. CONSTITUTION:When the transport rails 7-1-7-4 of a rotor 7 and chute rails 3' and 4' are in nonadjusted state, the ICs 5a-5d conveyed by the chute rail 4' are engaged by the roller 7 and stopped. When the transport rail 7-1 is adjusted to the chute rail 4' by turning the rotor 7 in the direction of arrow L, the ICs are conveyed onto the transport rail 7-1. Then, the transport rail 7-2 is adjusted to the chute rail 4' by turning the rotor 7 further, and the ICs are taken in. Then, the ICs are received from the chute 4' by turning the rotor 7 in succession on one side, and the ICs can be delivered by the reversal onto the chute 3'. Thus, separating reversal can be automated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention provides a shoot tray for a large number of PLCC type ICs. The present invention relates to a device that separates a preceding IC from a succeeding IC while being conveyed by a wheel, and also inverts the IC in the vertical direction.

[Field of application of the invention]

In the present invention, a large number of ICs are
The present invention relates to a mechanism for sequentially separating C one by one and reversing the vertical direction thereof, and is suitable for use in an IC handler.

[Background of the invention]

The IC handler is an automatic device that sequentially transports a large number of ICs, supplies them to an IC test socket, and removes and carries out the ICs from the socket.

In the above IC handler, chute rails are used to transport a large number of ICs. This chute rail is configured in an appropriate shape depending on the type of IC.

Plastic leaded chip carrier type IC
is abbreviated as PLCC type IC, and is an ICJ in which a large number of leads arranged in rows on the sides of a plate-shaped package whose top and bottom surfaces are parallel are bent toward the bottom side of the package.
is defined as

FIG. 8 shows an example of a PLCC type IC, where 1 is a package and 2 is a lead. FIG. 9 is an end view of the IC shown in the above figure, viewed in the direction of the arrow {circle around (2)} and turned upside down.

Of the two parallel surfaces of the package 1, the surface 1a bearing the brand name 1a-1 will be referred to as the back surface, and the opposite side will be referred to as the ventral surface. The lead 2 is bent toward the ventral surface 1b.

When transporting this PLCC type IC using a chute rail,
There are cases in which the back surface 1a is directed upwards and cases in which the back surface 1a is directed downwards.

FIG. 10 is an explanatory diagram of a state in which the bag is being transported on the chute rail 3 with the back surface 1a facing upward. Transporting in this manner has the advantage that the brand display 1a-1 can be visually inspected. Moreover, FIG. 11 is an explanatory diagram of a state in which the back surface 1a is facing down and is being transported on the chute rail 4. When embedding the heater 4a in the chute rail 4 to preheat the IC to a predetermined temperature, it must be brought into close contact with the chute rail surface with the back surface 1a facing down.

Due to the circumstances exemplified above, during the transportation of the PLCC type IC, there are two positions: one with the back side 1a facing upward as shown in Figure 10, and the other with the back side 1a facing down as shown in Figure 11. It is often necessary to perform a reversal of position between the two positions.

In addition to the above-described inversion of the IC, it is also necessary to separate the IC. FIG. 12 is an explanatory diagram of the above separation operation.

When a large number of ICs are sequentially conveyed by the chute 3 while being adjacent to each other, only the first IC 5a is transferred to the subsequent IC.
C5b and its successor IC5c.

There are often cases where it is necessary to separate it from 5d and send it alone to the next step 6.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and it automatically inverts PL and CC type ICs that are being conveyed continuously (with the front and rear ICs facing each other) by chute rails, and The aim is to provide a mechanism that can separate the two.

[Summary of the invention]

In order to achieve the above object, the present invention provides a separation and reversal mechanism.

A rotor is constructed in which N IC transport rails of approximately the same length as the IC are provided radially, and the above rotor is
Provided with a driving means for rotating intermittently by °/N, and
The present invention is characterized in that chute rails for transporting ICs are installed diagonally above and below the rotor, respectively.

[Embodiments of the invention]

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a side view schematically depicting the separation 1 reversing mechanism of the present invention, and FIGS. 2 to 7 are explanatory diagrams sequentially depicting its operating state.

The embodiment shown in FIG.
5a, 5b, 5c to 5j in order from the first one
Separate the pieces one by one, turn them upside down, and use the chute rail 3.
This is an example of a configuration in which the raw material is sent out to ' and then supplied to the next step 6.

This embodiment is an embodiment in which the number of N mentioned above is set to four.

The rotor 7 has N=4 transport rails 7-1y 7-Zt
7-3y and 7-4 are provided radially and rotate intermittently counterclockwise around the axis 7a. In this example, the above intermittent rotation is 360'/N = 360°/4
It is configured to rotate by =90°.

The four transport rails 7-section to 7-4 are each PL
It is configured to have approximately the same length as one of the CC type ICs 5a to 5j. Therefore, each of the transport rails 7-1 to 7-4 can accommodate one PLCC type IC.

Along a line passing through the rotating shaft 7a of the rotor 7, a chute rail 4' is installed diagonally above the rotor 7, and a chute rail 3' is installed diagonally below the rotor 7. A next step 6 is provided in the middle of the chute rail 3'. When implementing the present invention.

This next step 6 may be of any type, for example, a preheater (
It can be applied to any device that constitutes an IC handler, such as a preheating device), a measurement socket, etc.

In this embodiment, a large number of PLCC type ICs are conveyed on the chute rail 4' with their backs facing downwards and adjacent to each other in the front and back.

In addition, in the first step 6, the PLCC type IC that is the object to be transported must have its leads facing toward the right side of the figure as shown in Figure 1, and for mechanical reasons of the equipment in the next step 6,
In the chute rail 3' immediately before that, for example, I
As shown in C5b, each item must be separated and transported one by one with the back facing up.

The rotor 7 configured as described above performs the above-mentioned vertical reversal action and separation action. Next, the operation will be explained sequentially with reference to FIGS. 2 to 7.

In the state shown in Figure 2, PLCC type ICs 5a, 5b, 5c, 5
d is transported by chute rail 4'.

Each is attached to the other with its back facing down.

The rotor 7 is rotating counterclockwise as shown by the arrow, but all of the transport rails (7-1 to 7-4) are connected to the chute rail 4.
Since the IC 5a is not directly facing the rotor, the leading IC 5a is stopped in front of the rotor.

When carrying out the present invention, a stopper 8 shown by a phantom line may be provided as a means for stopping the leading IC in this state, or the outer periphery of the rotor 7 may be brought into contact with the leading IC to serve as a stopper. It may also serve as

The rotor 7 rotates, and as shown in FIG.
-1 comes to the position where it is directly facing the chute rail 4', the rotation of the rotor 7 is temporarily stopped.

Then, the leading IC 5a slides onto the conveyor rail 7 and is stored.

From the above state (Fig. 3), turn the rotor 7 counterclockwise.

It is rotated by 360°/N=360'/4=90° and then stopped temporarily.

FIG. 4 shows the state in the middle of rotation, and FIG. 5 shows the state after rotation by 90 degrees.

In the state shown in Fig. 5, the transport rail 'L2 is connected to the chute rail 4.
', the subsequent IC 5b slides into the transport rail 7-2.

From the above state (Fig. 5), rotate the rotor 7 counterclockwise by 9
Rotate 0° and stop once. FIG. 6 shows the state in the middle of rotation, and FIG. 7 shows the state after rotation by 90 degrees.

In the state shown in Fig. 7, the transport rail 7-1 is connected to the chute rail 3.
Only one IC 5a at the top, which was housed in the transport rail 'Ll, is sent out to the chute rail 3' with its back side facing upward.

Simultaneously with the above operation, the subsequent IC 5c slides onto the transport rail 7-3.

When the leading IC 5a is completely fed into the chute rail 3' in the state shown in FIG. 7, a state similar to that shown in FIG. 5 is reached.

Hereinafter, when the above operation is repeated intermittently, the subsequent IC5
B, 5c, and 5d are successively separated one by one and sent out with their backs facing upward.

〔Effect of the invention〕

As described in detail above, when the separation/inversion mechanism of the present invention is applied, a large number of PLs that are continuously conveyed adjacent to each other can be
Automatically flips the top and bottom of the CC type IC, and automatically
It has an excellent practical effect in that it can be separated and sent out one by one.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically depicting an embodiment of the separation/inversion mechanism of the present invention. FIGS. 2 to 7 are explanatory diagrams sequentially depicting the operating states of the above embodiment. Fig. 8 is a perspective view showing an example of a PLCC type IC, Fig. 9 is an end view of the IC shown in Fig. 1 after being turned upside down and viewed in the direction of the arrow ■, and Fig. 12 is an operation of transporting the IC using a chute rail. FIG. 1...PLCC: IC package, la...
back. 1b... Ventral surface, 1a-1... Brand display, 2...
Lead, 3°3'... Shoot rail, 4,4'...
- Shoot rail. 4a...Heater, 5a...First IC15b...
Subsequent IC150~5j...and further subsequent IC16...
・Next process, 7... Rotor, 7a... Rotor shaft, 7-
1 to 7-4... Conveyance rail, 8... Stopper. Patent Applicant Hitachi Electronic Engineering Co., Ltd. Representative Patent Attorney Tadashi Akimoto Figure 8 Figure 7 Figure 10 Figure 3 1b Figure 11 Country b Figure 12 Procedural Amendment (Method) % Formula % 1. Case Indication Showa 1940 Special Patent, Original No. 1μo4cr≠No.2, Title of the invention: ICO separation and reversal mechanism 3, Relationship to the case of the person making the amendment Patent applicant address (residence): Mr. Hisashi Wr. 30, Nakai-cho, Ashigarakami-gun, Kanagawa Prefecture
Name (Name) Hitachi Electronics Engineering Co., Ltd. 7,
Subject of amendment Column 9 of “Brief explanation of drawings” in the specification
Attachment (1) In the specification, in the column for a brief explanation of the drawings, at the beginning of the bottom line of the first page, ``Drawing 1 is the same as in Figure 1'' and ``Drawing 1 is the same Correct it as "in the figure". (2) In the specification, in the column for a brief explanation of the drawings, on page 1O, at the beginning of the / line, "The end view as seen in the direction, the first figure is"
Correct it as if it were a deficiency. ``The end view as seen in the direction, Figure 1O, and Figure 11 are explanatory diagrams of the above IC being transported by chute rails, respectively, and Figure 1 is

Claims (1)

[Claims] A rotor is constructed in which N IC transport rails of approximately the same length as the IC are provided radially, and the above rotor is
Provided with a driving means for rotating intermittently by °/N, and
A PLC characterized in that chute rails for IC transport are installed diagonally above and below the rotor, respectively.
Reversing mechanism with separation function for C type IC.