JPH07165287A - Tray for carrying precision parts - Google Patents

Abstract

PURPOSE:To make a tray securely hold an IC chip so as to improve the operating condition by providing holding claws for elastically holding the IC chip at its upper end side at corners at four diagonal corners of an object-holding hollow. CONSTITUTION:A tray A is connected to others of its series in a chain with connectors 5, 6. An IC chip B is deposited in the object-holding hollow 1 of each tray and the trays are transferred onto an automatic assembly line. When the IC chip B is put into the object-holding hollow 1, a touch of the claw 7c of a holding claw 7 at each of the lower corner end edges of the IC chip B causes leg pieces 7a, 7a to be elastically tilted backward, that is, to recoil, with their attaching points at the bottoms as the fulcrums and thus allows the IC chip B to pass through. As the claw 7c comes to the top of the IC chip B, the leg pieces 7a, 7 resume their original position and hold the IC chip B in place from above. Thus the parallel movement makes the leg pieces 7a, 7a retain the necessary elastic gripping power and they become applicable to IC chips with allowance in their size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor device such as an integrated circuit, a memory circuit or various irregularly shaped parts (for example, a connector, a switch, a transmitter), various electronic equipments or a relatively small precision machine assembly for precision machine assembly. The present invention relates to a tray for transporting precision parts suitable for holding individual parts (collectively referred to as “IC chips”) individually and carrying them into an automatic assembly machine or the like.

[0002]

2. Description of the Related Art In recent years, most of the main circuit components have tended to be made into chips in order to improve the operational reliability and assembly efficiency of electronic equipment. Therefore, in order to supply IC chips to various intermediate processing lines, final assembly lines, and the like, a relatively large-sized transport container in which recesses for accommodating chips are arranged in a plurality of rows and columns is used. In such a large container, chips are individually transferred to the processing or assembly line by a robot hand or the like arranged in the vicinity of one side edge of the transfer line, but the other side edge of the transfer line is used. The robot hand has to reciprocate over a long distance when taking out the IC chip in a portion close to the container from the container. This increases the waiting time on the processing line side, which is not only a negative factor for efficiency improvement, but also the gripping position must be changed every time, so if there is a failure to grab, chip damage or processing line confusion may occur. There is. In order to avoid such an adverse effect, the position control of the robot hand must be performed with high precision, and the control cost also increases.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, trays that can be connected in a chain are compactly formed by an integrally molded product to facilitate the operation by a robot hand on the line, and the trays are formed. An IC to be housed in at least a pair of diagonal portions of the four corners of the article storage recess
The engaging claw piece that elastically engages the upper end surface of the corner portion of the chip allows the IC chip to be securely held in the tray by a simple operation of simply pushing it into the storage section.
The main object of the present invention is to provide a tray that can bite the nails of the robot hand from any direction of the front, rear, left, and right of the chip to improve workability.

Further, an important object of the present invention is to impart a unique shape to the engaging claw piece so that a large elastic deflection amount can be obtained without impairing the elastic force of the engaging claw piece and the IC chip is held. The purpose of the present invention is to provide a tray that can have a wide usable size.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, the tray according to the present invention includes a tray main body (2) that is an integrally molded product made of a synthetic resin material and that has an article storage recess (1) that is substantially rectangular in a plan view and that stores an article to be transported. At least one of the horizontal left and right side edges (3), (3) of the tray main body (2) is formed with frame feed engaging portions (4) of the transfer mechanism, and the front end edge of the tray main body (2) and On the rear edge, connecting pieces (5) and (6) for connecting the trays to each other in a bendable manner are formed,
Further, in the four corners of the article storage recess (1), at least a pair of diagonal portions are provided with horizontal engaging claw pieces (7) that engage with the upper end surfaces of the corners of the conveyed articles to be stored. The engaging claw pieces (7) are two leg plates (7a) and (7a), which are elastic and stand upright from the bottom plate (8) of the tray main body (2) in parallel, and the leg plates (7).
a) and (7a) have an upper plate (7b) formed over the upper ends thereof, and a claw (7c) projectingly formed at the tip of the upper plate (7b).

[0006]

[Function] The tray (A) formed as described above is a connecting piece
(5) and (6) are connected in a chain by the connecting means, and the IC chips (B) are stored in the article storage recesses (1) of the respective trays and carried into the automatic assembly line. When the IC chip (B) is stored in the article storage recess (1), the engaging claw pieces (7) ...
When c) hits the lower edge of the corner of the IC chip (B), the IC chip is elastically retracted backward toward the bottom of the leg plates (7a) and (7a) in the direction shown by the phantom line in FIG. Allow (B) to pass. When the nail (7c) comes out on the upper surface of the IC chip (B), the leg plate
(7a) and (7a) are restored to their original positions and hold the IC chip (B) from above. Engagement claw piece when taking out IC chip (B)
(7) Pull out upward against the elastic force of. In the above operation, the upper plate forming the claws (7c) of the engaging claw pieces (7) ...
Since (7b) is held by the two front and rear leg plates (7a) and (7a) which are erected in parallel from the bottom plate (8) of the tray main body (2),
The amount of backward movement of the claw (7c) can be made large by the parallel movement of the leg plates (7a) and (7a), but the necessary elastic clamping force is held by the two leg plates (7a) and (7a). As a result, the usable effective size of the IC chip to be held can be widened.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of the tray (A) according to the present invention, which is used for accommodating a rectangular IC chip (B). The tray (A) includes a tray main body (2) provided with an article storage concave portion (1) for accommodating the IC chip (B) and having a substantially quadrangular shape in plan view, and is integrally molded of a synthetic resin material. As the resin material, for example, polyacetal (PO
M) is preferred. The article storage recess (1) has an IC chip (B)
Is formed with a size larger than that of the IC chip (B) between the inner surface of the storage recess and the IC chip (B).
In this embodiment, the front and rear width of the article storage recess (1) is 20 mm,
The width is 30mm.

Horizontal left and right side edges (3) of the tray main body (2),
At least one of (3) is a frame feed engagement part (4)
Are formed with a predetermined interval. In this embodiment, the engaging portions (4) ... Are formed by holes, but they may be projections. Further, connecting pieces (5) and (6) for connecting the trays to each other are horizontally formed on the upper edges of the front wall surface (9) and the rear wall surface (10) of the tray main body (2). The connecting pieces (5) and (6) are formed such that the trays can be bent at the connecting pieces (5) and (6) when a large number of trays are connected to each other in the front-rear direction. Therefore, connecting pieces (5), (6) are formed thin, or
Although not shown, it is preferable to provide a V groove at the root of at least one of the connecting pieces (5) and (6). By this, the connecting piece
It is possible to wind a large number of trays connected in a chain by the steps (5) and (6) into a reel.

Further, horizontal engaging claw pieces (7) are provided at the four corners of the article accommodating recess (1) to engage with the upper end surfaces of the corners of the IC chip (B) to be accommodated. The engaging claw pieces (7) may be formed only in at least a pair of diagonal portions of the four corners of the article storage recess (1). Further, the engaging claw pieces (7) ... are two elastic front and rear leg plates (7a), (7a) standing upright from the bottom plate (8) of the tray main body (2), and the leg plates. (7a), an upper plate (7b) formed across the upper end of (7a)
And a claw (7c) projectingly formed at the tip of the upper plate (7b). The bottom plate (8) of the tray main body (2) has a push-up hole (11) for pushing out the stored IC chip (B) from below. Incidentally, reference numerals (12) ... In the drawing are ribs provided upright so as to surround the lower periphery of the IC chip (B) to be housed.

The tray (A) formed as described above is shown in FIG.
As shown in (1), the connecting pieces (5) and (6) are used by connecting them in a chain by connecting means. In this embodiment, one connecting piece (5) is provided with a pin hole (5a), and the other connecting piece (6) has a pin (6a).
It is configured to connect by fitting the pin hole (5a) and the pin (6a) of the tray to be connected, but instead of this, for example, connecting pieces (5), (6 ) May be formed in the shape of a tongue and these may be connected by means such as fusion bonding.

Thus, the article storage recesses (1) of the respective trays
The IC chip (B) is stored in the ... and carried into the automatic assembly line. When the IC chip (B) is stored in the article storage recess (1), the claws (7) of the engaging claw pieces (7). 7c) is an IC chip (B)
When it hits the lower edge of the corner portion of the base plate, the IC chip (B) is allowed to pass backward by inclining backward rearward with the lower end roots of the leg plates (7a) and (7a) as fulcrums in the direction shown by the phantom line in FIG. The nail (7c) is I
When it comes out to the upper surface of the C chip (B), the leg plates (7a), (7a) are restored to their original positions and the IC chip (B) is engaged and held from above. IC
When the chip (B) is taken out, it may be pulled upward against the elastic force of the engaging claw pieces (7).

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and is provided with the above constitutional requirements.
In addition, as long as the above-mentioned object is achieved and the following effects are obtained, appropriate modifications can be carried out.

[0013]

As described above, since the tray of the present invention is made of compact integrally formed trays that can be connected in a chain, the operation area of the robot hand on the line can be made small and the operation can be facilitated. And IC
By simply pushing the chip into the storage part, it can be securely held in the tray, and the nail of the robot hand can be bitten from any of the front, back, left and right directions of the IC chip to improve workability. Can be increased. Further, since the engaging claw pieces for holding the IC chip are formed at the diagonal portions of the article storage concave portion, when the IC chip is taken out in the automatic machine line, it does not interfere with the insertion of the robot arm, and the IC chip The robot arm can be pinched from any of the front, rear, left and right sides, and the operability of the robot arm is facilitated. In addition, according to the present invention, the upper plate that forms the claw of the engaging claw piece is held by the two front and rear leg plates that are erected parallel to the bottom plate mainly of the tray in the operation of attaching and detaching the IC chip. Although the retreating momentum of the claw can be made large by the parallel movement of the leg plate, the necessary elastic clamping force can be held by the two leg plates, and the effective use size of the IC chip to be held is thereby possible. It has various remarkable effects such that it can have a wide range and can be used widely.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a tray according to the present invention.

FIG. 2 is a sectional view taken along the line CC in FIG.

FIG. 3 is an enlarged perspective view of an engaging claw piece portion according to the present invention.

FIG. 4 is a sectional view showing the operation of the engaging claw piece.

FIG. 5 is a perspective view showing a state in which trays according to the present invention are connected in a chain. (1) Article storage recess (2) Tray main body (3) Left and right side walls (4) Frame feed engaging part (5) Connecting piece (6) Connecting piece (7) Engaging claw piece (7a) Engaging claw piece Leg plate (7b) Top plate of engaging claw piece (7c) Claw of engaging claw piece (8) Bottom plate

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location H01L 21/68 U H05K 13/02 D // B65D 73/02 A

Claims (1)

[Claims] 1. An integrally molded product made of a synthetic resin material,
A substantially rectangular article storage recess for storing articles to be transported
A tray main body (2) having (1) is included, and at least one of the horizontal left and right side edges (3), (3) of the tray main body (2) has a frame feed engaging portion (4) of the transport mechanism. The tray main body (2) is formed with connecting pieces (5), (6) at the front end edge and the rear end edge of the tray main body (2) so as to connect the trays to each other in a bendable manner. Among the four corners of (4), horizontal engaging claw pieces (7) that engage with the upper end surfaces of the corners of the conveyed articles to be stored are provided in at least a pair of diagonal portions. 7) is a pair of elastic front and rear leg plates (7a) and (7a) which are installed in parallel from the bottom plate (8) of the tray main body (2) and the upper ends of these leg plates (7a) and (7a). A tray for conveying precision parts, which comprises an upper plate (7b) formed across and a claw (7c) projectingly formed at the tip of the upper plate (7b).