JPS62222922A - Object feeding device - Google Patents

Abstract

PURPOSE:To enable accurate feeding of an object by making the pitch of the holding part of a holding mechanism automatically correspond to the object arranging pitches in each of feeding and installing positions, in the captioned device which holds and feeds plural objects by said holding mechanism. CONSTITUTION:When ICs 6 are installed on the sockets 5 arranged on a device board 1, the device board 1 is carried in from a loader part 2 to an installing position 3 and, then, the ICs 6 are installed on the sockets 5 which are regularly arranged crosswise on the main surface of the device board 1. The ICs 6 are fed from a feeding position 7 by means of an object feeding device 4. The object feeding device 4 contains movable blocks 20..., in each of which a vacuum adsorbing tool is provided on the bottom face, to which a threaded shaft 14 is screwed and the pitch of the movable block 20 can be varied by rotating the threaded shaft 14 which has plural zones A-E in which thread leads are formed in an arithmetical series.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to an article supply device, for example, in environmental tests such as aging and burn-in of electronic components such as ICs (integrated circuits). The present invention relates to an article supply device for mounting and supplying articles.

[Conventional technology]

As devices for testing the characteristics of ICs, there are environmental test devices such as aging devices and burn-in devices.

Regarding such environmental test equipment, for example, regarding burn-in equipment, please refer to "Electronic Materials J 19" published by Industrial Research Council.
1985 special issue, published November 20, 1985, P227
~P231.

Further, the aging device is described in Kogyo Kenkyukai (Electronic Materials J October 1984 issue, October 1, 1984, pages 170 to 174). In the above document, electronic components (articles) such as ICs to be tested are installed in tens to hundreds of sockets attached to device ports, and their characteristics are tested. Further, the latter document describes that there are a hatch method and an in-line method as methods for processing a printed wiring board (sample) on which ICs, capacitors, etc. are mounted.

In addition, the batch processing method has a relatively simple configuration of the sample mounting section and generally processes a large number of batches per hatch, so it is highly economical. It is stated that this will not be obtained.

[Problem that the invention seeks to solve]

To insert ICs into a device port that has a large number of sockets, you can use a commercially available insertion device called an inserter to insert ICs into the sockets one by one, or you can insert them into the entire row of sockets in one operation. There is. but,
Since the former method involves individual processing, the processing speed is slow and productivity is low. In addition, the latter method uses I for each socket pitch.
It becomes necessary to prepare an alignment mechanism and a mounting mechanism for C, which increases the equipment cost.

An object of the present invention is to provide a highly versatile article feeding device that can automatically adjust the holding pitch of articles.

The above and other objects and novel features of the present invention include:
It will become clear from the description of this specification and the accompanying drawings.

[Means for solving problems]

In the article supply device of the present invention, the holding portion of the holding mechanism that holds the IC is screwed onto one screw shaft, and each holding portion is screwed onto each screw portion having a screw lead that changes arithmetically. equipped.

[Effect]

According to the above-mentioned means, since the holding part of the holding mechanism is screwed into a threaded part whose screw lead changes arithmetically, the pitch of each holding part can be adjusted by rotating the screw shaft by a desired degree. changes. Therefore, since the pitch of the holding part can be matched to the arrangement pitch of ICs at the supply position and also to the socket pitch at the mounting position, ICs can be reliably supplied between supply positions and mounting positions with different pitches. I can do it.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing an overview of a holding mechanism in an article supply device according to an embodiment of the present invention, FIG. 2 is a schematic plan view showing the relationship between the device port and the article supply device, and FIG. FIG. 4 is a plan view showing an outline of the article supplying device, and a cross-sectional view as well.

In this embodiment, an example will be described in which ICs are mounted in sockets arranged in a device port.

When mounting an IC on a device port in an environmental testing device such as an aging device or a burn-in device, the device port 1 is carried into a mounting position 3 from a device port loader section 2, for example, as shown in FIG. Thereafter, sockets 5 are regularly arranged vertically and horizontally on the main surface of the device port 1 by the article supply device 4 shown in block form with two-dot chain lines (20 sockets in total are shown in 4 columns and 5 rows in the figure). IC6 is attached to each. The article supply device 4 holds the IC 6 placed at the supply position 7 and mounts (inserts) the IC 6 into a predetermined socket row at the mounting position 3 . In addition, socket 5
Although LC6 and LC6 are shown as rectangular bodies in the figure, IC6 has diagonal lines.

On the other hand, the device port I loaded with the IC 6 is carried out to the device port unloader section 8.

Further, this article supply device 4 is configured such that the ICs 6 having an arrangement pitch of a in the supply position 7 can be mounted in the sockets 5 of the mounting position 3 having an arrangement pitch of b.

As shown in FIGS. 3 and 4, the article supply device 4 includes a movable body 10 that reciprocates while being guided by a pair of guide shafts 9. This movable body 10 has its ends fixed to both ends of a chino 13 that is hung between a drive sprocket 11 and a guide sprocket 12. This movable body 1o is moved to the mounting position 3 by normal rotation of the drive sprocket 11, and is moved to the mounting position 3 by the drive sprocket 11.
It is moved to the top of the supply position 7 by the reverse drive of step 1.

A screw shaft 14 is disposed on the lower surface side of the movable body 10. This screw shaft 14 extends in a direction perpendicular to the moving direction of the movable body 1o, in other words, along the direction in which the ICs 6 are lined up at the supply position 7. Screw shaft 14
are rotatably supported at both ends by a support plate 15 fixed to the movable body 10. Further, one end of this screw shaft 14 passes through the support plate 15 and the movable body 10
It is connected via a coupling 18 to a rotating shaft of a motor 17 attached to a support plate 16 fixed to the motor.

A vacuum suction tool (collet) 19 is disposed on the screw shaft 14 to hold the five ICs 6 in the negative row. These collets 19 are attached to the lower end of a movable block 20 that is screwed into the threaded portion of the screw shaft 14. Further, a roller 21 is provided on the upper surface of this movable block 20.
is installed. These rollers 21 fit into slits 22 provided in the movable body 10 so as to be parallel to the screw shaft 14, and prevent the movable block 20 from rotating, and are guided by the slits 22 to be movable. There is. Said Koren 1 to 19. Movable block 20. A holding part is constituted by the roller 21 and the like, and this holding part and the screw shaft 14. Motor 17. The movable body 10 and the like constitute a holding mechanism of the article supply device.

In addition, the device port 1 at the mounting position 3
The support table 23 on which the is placed is supported by a lifting rod 25 of an elevator 24 having a cylinder structure. A guide shaft 27 is attached to the support table 23 and is movable up and down to a guide 26 which is in a fixed state.
is designed so that it does not rotate when going up or down. By raising the support table 23 to a predetermined height, the leads 28 of the IC 6 are inserted into each socket 5 of the device port 1 supported by the support table 23, and the IC 6 is mounted on the device port 1. .

By the way, as shown in FIG. 1, the five movable blocks 20 screwed onto the screw shaft 14 are screwed into threaded portions 29 in respective areas indicated by A-E. A-
The threaded portions 29 designated by E are all right-handed threaded, but each thread lead is arranged in an arithmetic series. For example, if each threaded portion 29 is a single thread, each thread pitch is A.
W4 area is 1mm, BeN area is 2mm, C area is 3mm,
The D area is 4mm, and the Epi area is 5mm. Further, when the screw shaft 14 is at the rotation origin, the pitch of each movable block 20 is a. In addition, at this time, it is assumed that the position of the left end movable block 20 is at a position of 3 degrees from the origin.

In the screw shaft 14 having such a structure, when the screw shaft 14 is rotated one turn to the left, each movable block 20 moves forward on each threaded portion 29 of A to E, but each thread pitch is 1. mm
, 2mm, 3mm, 4mm.

Since the distance is 5 mm, which is an arithmetic progression, the interval between each movable block 20 increases by 1 mm, resulting in a pitch of a+1. Therefore, if the screw shaft 14 is rotated α times,
The leftmost movable block 20 moves to a position away from the origin by +α, and the pitch of each movable block 20 is a.
It becomes +α. Further, when the screw shaft 14 is rotated clockwise, the position of the movable block 20 moves backward, and the pitch of the movable block 20 becomes narrower by the amount of rotation.

In such an article supply device, when the IC 6 is installed in the socket 5 of the device port 1, the pitch of the holding section consisting of the collet 19°, the movable block 20, etc. can be freely adjusted by controlling the forward and reverse rotation of the motor 17. , since each holding part can be made to correspond to the arrangement pitch of the ICs 6 at the supply position 7 and also to the arrangement pitch of the sockets 5 at the mounting position 3, the pitch when the ICs 6 are supplied and the pitch when they are mounted are but,
For example, even if a and b are different, the IC 6 can be mounted reliably.

According to such an embodiment, the following effects can be obtained.

(1) According to the article supply device of the present invention, since the ICs arranged at the supply position can be automatically mounted on the socket array located at the mounting position, the effect of increasing workability can be obtained.

(2) Even if the arrangement pitch of ICs at the supply position and the mounting pitch at the mounting position are different, the article supplying device of the present invention can automatically adjust the pitch of the holding section that holds the ICs, so that it can be accurately and reliably The effect that an IC can be mounted can be obtained.

(3) According to (2) above, the article supplying device of the present invention has an I
Since the pitch when installing C can be freely selected, the effect of excellent versatility can be obtained.

(4) In the article supplying device of the present invention, the pitch changing mechanism of the holding part is configured such that each block of the screw shaft of one tree is a threaded part having a geometric series thread lead, and each of these threaded parts is Since the structure in which the holding portion is provided is simple, the entire device can be made compact.

(4) Due to the above (3), the article supply device of the present invention has the effect that its manufacturing cost is low.

(5) According to (1) to (4) above, according to the present invention, it is possible to provide an inexpensive article supply device that has excellent versatility and can mount ICs at high speed, thereby reducing IC mounting costs. There is a synergistic effect that can be achieved.

Although the invention made by the present inventor has been specifically explained above based on Examples, it goes without saying that the present invention is not limited to the above Examples and can be modified in various ways without departing from the gist thereof. For example, as a mechanism for changing the pitch of the holding portion, the screw shaft 14 may be provided with a right-hand thread 30 or a left-hand thread 31, as shown in FIG. In this case, the central movable block 20 is
It is attached to an area where no screw is provided using a snap ring or the like (not shown) so that its position does not change with respect to the axial direction of the screw shaft I4. Also, a right-hand screw 30 or a left-hand screw 31 is provided on both sides of this central movable block 20.
are provided, and the movable block 20 is screwed into these right-hand screws 30 or left-hand screws 31. In this structure, when the screw shaft 14 is rotated in one direction, the two movable blocks 20 on each side move closer to the central movable block 20 and are lined up with a desired pitch, and the screw shaft 14 is rotated in one direction. When the shaft 14 is rotated in the other direction, the two movable blocks 20 on each side are moved away from the central movable block 20 and lined up to have a desired pitch.

Furthermore, in the embodiment described above, each threaded portion 29 is connected to one threaded shaft 1.
4, there is a limit to the movement of the movable block 20 that is screwed into these threaded portions 29. Therefore,
As an example in which each movable block 20 can be moved in a long area,
There is an article supply device having a structure as shown in FIGS. 6 and 7. In this example, each movable block 20 is threaded onto one threaded shaft 14 so that each movable block 20 can move over a long range. Further, the screw lead in each screw shaft 14 is in a geometric progression as in the previous embodiment. Further, each screw shaft 14 has a gear 32 fixed to one end thereof. These gears 32 are connected by a guide gear 33, so that when one screw shaft 14 is rotated in one direction, all the gears 32 are rotated in the same direction and by the same amount. Furthermore, a roller 21 is attached to the upper surface of each movable block 20, as in the previous embodiment. However, these rollers 21 are adapted to fit into corresponding slits 22 of the four slits 22 provided in the movable body 10, unlike the embodiments described above. Further, the collets 19 attached to the movable block 20 are arranged on the same line. Therefore, each movable block 20 has the collet 19
It has an arm 34 for supporting. According to this structure, each movable block 20 is theoretically movable over the entire length of the screw shaft 14, that is, the area where the screw is provided, so that the pitch of the collet 19, that is, the holding portion This has the effect of increasing the amount of change.

In the above explanation, the invention made by the present inventor was mainly applied to the technology for attaching an IC device port to a socket/nod in an environmental test equipment, which is the background field of application of the invention, but the present invention is not limited thereto. It's not something you can do.

The present invention can be applied to at least a technique that changes the pitch and supplies articles in a lined manner at a predetermined location.

〔Effect of the invention〕

In the article supply device of the present invention, the holding part of the holding mechanism that holds the IC is screwed onto one screw shaft, and each holding part is provided with each screw having a screw lead that changes arithmetically. It is screwed into the part. Therefore, by changing the pitch of each holding part by rotating the screw shaft to a desired degree, the bias of the holding part can be adjusted to the IC of the supply position.
Since it is possible to match the arrangement pitch of the ICs and the socket pitch of the mounting position, it is possible to reliably supply ICs between supply positions and mounting positions with different pitches.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an overview of a holding mechanism in an article supply device according to an embodiment of the present invention, FIG. 2 is a schematic plan view showing the relationship between the device port and the article supply device, and FIG. FIG. 4 is a sectional view of the article supplying device; FIG. 5 is a schematic diagram of a holding mechanism according to another embodiment of the present invention; FIG. 6 is a schematic diagram of a holding mechanism according to another embodiment of the present invention. FIG. 7 is a side view. ■...Device port, 2...Device port loader section, 3...Mounting position, 4...article supply device, 5...socket, 6...IC, 7...supply position, 8...Device port unloader, 9...
Guide shaft, 10... Movable body, 11... Drive sprocket, 12... Guide sprocket, 13... Cheno, 14... Screw shaft, 15. 16... Support plate, 17
...Motor, 18...Coupling, 19...Collet, 20...Movable block, 21...Roller,
22...Slit, 23...Support table, 24...
・・Elevator, 25・・Lifting rod, 26・・・Guide, 27・・・Guide shaft, 28・・Lead, 2
9...Threaded part, 3o...Fig. 5

Claims (1)

[Scope of Claims] 1. An article supply device in which a holding mechanism holds a plurality of articles lined up in a supply position and supplies each article to a mounting position, wherein the pitch of the holding portions of the holding mechanism that hold the articles is set as An article supply device characterized in that it automatically corresponds to article arrangement pitches at a supply position and a mounting position. 2. The article feeding device according to claim 1, wherein each of the holding parts has a threaded lead screwed into a different threaded part.