JPH0550130B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a chip tray supply and recovery device used in a chip mounting process in the manufacture of electronic solid-state devices, semiconductors, and the like.

[Technical background of the invention]

Generally, in the manufacture of electronic solid-state devices and semiconductors, chips (pellets) are mounted on stems or lead frames in the following manner. In other words, small chips of 2 mm square or less are usually picked up and mounted directly from the wafer to which the sheet is attached, but relatively large chips exceeding 2 mm square are mounted by picking up the chip directly from the wafer to which the sheet is attached. After stripping them off and rearranging them one by one on a chip tray (a container with partitions according to the size of the chips), the chips are picked up from the chip tray and mounted.

[Problems with background technology]

When mounting is performed using such a chip tray, only one or two chip trays can be provided on the chip supply table due to space constraints. For this reason, once the number of chips stored in the chip tray has been mounted, the mounting device must be temporarily stopped and the chip tray on the table must be replaced manually. Therefore, it is impossible to operate the device unmanned for a long period of time, which poses problems in terms of automation and labor saving.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a chip tray supply and collection device that supplies and collects chip trays to and from a table, enables unmanned operation of the entire device, and improves the operating rate.

[Summary of the invention]

The chip tray supply and collection device according to the present invention has a magazine that stores a plurality of chip trays in a stack and holds these chip trays so that they can be taken in and out from an exit on one side and an entrance on the other side along a predetermined X direction. First and second receiving trays for chip trays are arranged on both sides of the magazine opposite to the outlet and inlet in the X direction, respectively, and these receiving trays are configured to be able to reciprocate along the Y direction perpendicular to the X direction. At a transfer position that is moved a certain distance along the Y direction from the position where the first and second trays face the magazine, a table for supplying chips is placed between the first and second trays. are provided so as to be reciprocally movable along the X direction, and are on the side where the transfer position is located in the Y direction, and on the opposite side of the table from the chip tray on the first receiving tray in the X direction. A first feed lever feeds the chip tray from the first tray onto the table, and a first feed lever waits on the side where the magazine is located in the Y direction and on the opposite side of the magazine from the chip tray on the second tray in the X direction and moves the chip tray from the second tray. A transfer mechanism includes a second feed lever that feeds the chip tray into the magazine, and a Z-direction feed mechanism moves the bottom surface of the chip tray stored therein from the top surface of the first and second receiving trays. After positioning it slightly higher, the second feed lever is operated by the X-direction feed mechanism to feed the empty chip tray on the second receiving tray into the magazine, and collect it into the magazine. The chip tray in the magazine is fed onto the first receiving tray, and then the first and second receiving trays are moved to the transfer position by the Y-direction feeding mechanism, and at this transfer position, the first feeding lever is moved in the X-direction. Operated by a feeding mechanism, the chip tray on the first receiving tray is sent out onto the table and supplied onto the table, and the empty chip tray on the table is pushed out and transferred onto the second receiving tray by this chip tray. After that, the first and second receiving trays are moved to a position facing the magazine by the Y-direction feeding mechanism, and the above-described collection operation is repeated.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

In FIG. 1, reference numeral 11 denotes a rectangular base, and pillar-shaped brackets 12 are integrally erected at the four corners of the base 11, and guide rails 13 are provided between the brackets 12 along three sides of the base 11. 14 will be provided. Here, the guide rail 14
The direction along the guide rail 13 is defined as the X direction, and the direction along the guide rail 13 orthogonal thereto is defined as the Y direction.

Reference numeral 17 denotes a magazine which stores a plurality of chip trays 18 in a stacked manner and holds these chip trays 18 so as to be accessible from the left exit and the right entrance along the X direction. This magazine 17 is
Located approximately at the center of the base 11,
It is supported on a magazine receiver 20 that is integrated with the upper end of a rod 19 that passes through the base 11.

A first receiving tray 22 and a second receiving tray 23 are arranged on both sides of the magazine so as to face the outlet and inlet of the magazine 17 in the X direction, respectively. Each of these saucers 22 and 23 is connected to the guide rail 1.
3, it is integrally coupled with a slider 24 supported so as to be able to reciprocate along the Y direction. Further, a trace stopper 25 is provided near the end of each of these trays 22 and 23 on the side opposite to the magazine.

27 is a table for supplying chips to a mounting device (not shown), and when the first and second receiving trays 22, 23 move a certain distance in the Y direction and reach a predetermined transfer position, as shown in FIG. , is provided so as to be located between these both saucers 22 and 23.
The position of this table 27 is the origin position for supplying and recovering the chip tray 18 as described later, and when chips are supplied to the mounting device, it is moved to a bonding section at another position by a moving mechanism (not shown). .

Reference numeral 29 denotes a transfer mechanism, which includes a slider 30 supported by the guide rail 14 so as to be able to reciprocate along the X direction, and first and second feed levers 3 each integrally attached to the slider 30.
It consists of 1,32. The first feed lever 31
is always located on the side where the transfer position is located in the Y-direction position, and when the transfer mechanism 29 is at the X-direction moving end on the magazine outlet side, that is, on the left side in the figure, in the X-direction position, as shown in FIG. The chip tray 1 located on the first tray 22 that has been moved to the transfer position is
8 on the side opposite to the table, that is, the left end in the drawing. Further, the second feed lever 32 is always in the position of the magazine 1 in the Y direction.
7, and when the transfer mechanism 29 is at the X-direction moving end on the magazine entrance side, that is, at the right side in the figure, as shown in FIG.
The second
The chip tray 18 is disposed so as to face the end side opposite to the magazine, that is, the right end side in the figure, of the chip tray 18 located on the receiving tray 23 of the chip tray 18 .

34 is a Z direction feeding mechanism, and the magazine 17
The lower surface of each chip tray 18 stored therein is connected to the first and second trays 22 and 2, respectively.
3 in the vertical direction perpendicular to the plane formed by the X direction and the Y direction. The Z-direction feeding mechanism 34 has an inverted T-shaped support member 35 integrally connected to the lower surface of the base 11.
One bottom part of this support member 35 and the base 1
1, a lead screw 36 along the Z direction is rotatably provided. Further, a driving motor 37 is provided on the other bottom surface of the support member 35, and rotates the lead screw 36 via a belt 38. 39 is a movable body having a female screw hole into which the lead screw 36 is screwed. Further, this moving body 39 is connected to the lower end of the rod 19 that is integrated with the magazine holder 20, and rotates the magazine 17 placed on the magazine holder 20 by rotation of the lead screw 36 by the motor 37. Displace it one pitch at a time.

41 is a Y direction feeding mechanism, and the slider 24
In order to position the first and second receiving trays 22 and 23 at both positions facing the magazine 17 and at the transfer position facing the table 27,
Make a reciprocating motion in the direction. This Y direction feeding mechanism 41
The slider 24 and the joint rod 42
It has a lever 43 that is connected via. The base end of this lever 43 is rotatably supported on the base 11 side, and is provided with a long hole 44 along its length. A cam 45 has a pin 46 near its outer periphery that engages with the elongated hole 44, and is connected to both ends of a shaft 49 connected to a motor 47 provided on the base 11 via a bevel gear mechanism 48. Can be installed in one piece. Then, by the motor 47,
Rotationally driven via a shaft 49, the pin 4
6 and the elongated hole 44 that engages therewith, the lever 43 is rotated, and the slider 24 is further moved in the Y direction via the joint rod 42.

51 is an X direction feeding mechanism, and the slider 30
The transfer mechanism 29 is moved forward and backward along the X direction. This X-direction feed mechanism 51 has a lever 53 that is connected to the slider 30 via a joint rod 52. The proximal end of the lever 53 is rotatably supported on the base 11 side, and the intermediate portion in the longitudinal direction is connected to a cam 55 via a link 54. This cam 55 is rotationally driven by a motor 56 provided on the base 11, and is connected to the link 5 through a pin 57 near its outer periphery.
4 to rotate the lever 53. Accordingly, the slider 30 is driven in the X direction via the joint rod 52 as the lever 53 rotates.

In the above configuration, it is assumed that the table 27 has returned to the original position shown in the figure from the bonding portion described above. At this time, the empty chip tray 18 is placed on the table 27. Further, as shown in FIG. 2, a new chip tray 18 loaded with chips from the magazine 17 is placed on the first tray 22 due to the previous chip tray collection operation which will be described later. Next, the Y-direction feeding mechanism 41 is operated to move the first and second receiving trays 22, 23 a certain distance in the Y-direction, and position them at the transfer position facing the table 27, as shown in FIG. . In this state, the X direction feeding mechanism 51 is operated, and the transfer mechanism 2
9 to the right in the drawing along the X direction. By this operation, the first feed lever 31 engages with the left end side of the chip tray 18 on the first receiving tray 22 in the drawing, and sends it out to the right in the drawing. For this reason, the first
The chip tray 18 on the saucer 22 of the table 2
7 Move up. At this time, the empty chip tray 18 placed on the table 27 is pushed onto the second receiving tray 23 until its left end side in the figure forms a distance S with the right end side in the figure of the chip tray 18 stored in the magazine 17. Thereafter, the transfer mechanism 29 is returned by a distance o to form a gap α between the left end side of the chip tray 18 on the table 27 and the first feed lever 31 in the drawing.

As a result of the above operation, a new chip tray 18 with a large number of chips mounted on the table 27 is supplied, so the table 27 is moved again to a different bonding section by a moving mechanism (not shown).
Feed the chip to the mounting device.

Next, the Y direction feeding mechanism 41 is operated again, and the first
Then, the second trays 22 and 23 are moved along the Y direction in the opposite direction to the previous position, and are positioned opposite to the magazine 17, as shown in FIG. At this time,
The magazine 17 is fed one pitch by the Z direction feeding mechanism 34, and the first and second receiving trays 22,
Opposed to 23 is a new chip tray 18 with chips mounted thereon. In this state, the X direction feeding mechanism 51 is operated again to move the transfer mechanism 29 along the X direction in the opposite direction to the previous movement. Therefore, the second feed lever 32 engages with the right end side in the drawing of the empty chip tray 18 located on the second receiving tray 23, and feeds it to the left in the drawing. By this operation, the empty chip tray 18 on the second right tray 23 is collected into the magazine 17. At this time, as described above, the new chip trays 18 located opposite to each other in the magazine 17 are placed so that the right end surface thereof in the drawing is as shown in FIG. Push it out onto the first saucer 22 until it forms a gap R with the left end surface. Note that at this time, the table 27 is actually not in the second position but is located in the bonding section as described above.
After that, the transfer mechanism 29 is returned to the dimension α, and the magazine 1
A space α is formed between the right end side of the chip tray 18 in the chip tray 7 and the second feed lever 32. After stopping in this state for a while, and when the table 27 and the empty chip tray 18 return to the original position shown in FIG. 2, the above-described feeding operation is repeated again.

By repeating the supply and collection operations in this manner, the plurality of chip trays 18 stored in the magazine 17 are sequentially supplied onto the table 27, and the used empty chip trays 18 are transferred from the table 27 into the magazine 17. will be collected sequentially. Therefore, there is no need to prepare a separate space for collecting empty chip trays, and the entire device can be made smaller. In addition, used chip tray 1
Since chips 8 are collected into the magazine 17, chips remaining in the used tray 18 due to pick-up errors can also be collected.

Note that the magnitude relationship of the intervals α, β, R, and S shown in FIGS. 2 to 5 may be set so that β>α>R>S.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of chip trays stored in a magazine are sequentially supplied onto a table, and used chip trays are sequentially collected from the table into the magazine, unlike the conventional method. Since the used chip tray on the table is replaced every time, there is no need to stop the chip mount device each time, and unattended operation for a long time is possible, resulting in significant labor savings and improved operating rates.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the chip tray supply and recovery device according to the present invention, and FIGS. 2, 3, 4, and 5 illustrate the operation of the chip tray supply and recovery device shown in FIG. FIG. 17... Magazine, 18... Chip tray, 2
2...first saucer, 23...second saucer, 27...
...Table, 29...Transfer mechanism, 31...First feed lever, 32...Second feed lever, 34...
...Z direction feeding mechanism, 41... Y direction feeding mechanism, 5
1...X direction feeding mechanism.

Claims (1)

[Claims] 1 A magazine that stores a plurality of chip trays in a stack and holds these chip trays so that they can be entered and exited from an exit on one side and an entrance on the other side along a predetermined first and second trays that are arranged opposite to each other on both sides of the magazine and configured to be able to reciprocate along the Y direction orthogonal to the X direction, and the first and second trays are connected to the magazine. A table positioned between the first and second trays at a transfer position moved a certain distance along the Y direction from the opposing position, and a table positioned so as to be reciprocally movable along the X direction and always at the Y direction position. On the side where the transfer position is located and in the X direction position, the X on the magazine exit side
A first feed lever and a Y disposed on the side opposite to the table from the chip tray located on the first tray at the transfer position when the chip tray has been moved to the end of the direction movement.
In the direction position, the magazine is always on the side where the magazine is located, and in the a transfer mechanism consisting of a second feed lever disposed on the side; A Z-direction feeding mechanism that displaces one pitch at a time,
a Y-direction feeding mechanism that reciprocates to position the first and second trays at both positions facing the magazine and the transfer position; A chip tray supply and recovery device characterized by comprising an operating X-direction feeding mechanism.