JPS6281099A - Preliminarily positioning device for ic handler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] 15 The present invention is an IC handler that performs preliminary positioning in order to transfer an IC that has been transported along a chute rail to a transport means for the next process. It is related to the device.

[Background of the invention]

? l. The IC handler sequentially transports a large number of ICs, stacks them in a measuring socket, tests their electrical performance, and sorts the ICs into grades according to the test results. It is a machine.

As the transport means within the IC handler, a chute rail, a transport arm equipped with a vacuum suction function, etc. are used.

When an IC transported by a chute rail is transferred to a vacuum heat-absorbing type transfer arm and then stacked in a lifting socket, the above-mentioned receiver requires a positioning operation at the time of transfer. This positioning is not a positioning for making the X full suction arm take the receiver, but a preliminary positioning to facilitate precise positioning for making ice from the IC picked up by the vacuum suction arm into the measurement socket. However, in order to ensure the operational reliability of the IC handler, the above-mentioned preliminary positioning characteristics are extremely high.

FIG. 2 is a perspective view of a thin (FPP type) Ic1 as an example of an IC being transported by a chute rail 2. l
A is the IC1 package, and lb is also the lead 11 lead. 2a is the bottom surface of the chute rail 2, and 2b is a guide edge. In the present invention, the chute rail is not necessarily limited to a sliding type chute rail installed on a slope, but also includes one installed horizontally. The horizontal chute rail is provided with appropriate conveyance driving means such as a claw feeder or a linear feeder (none of which is shown).

FIG. 3 is a plan view showing an example of a conventional preliminary positioning device.

The ICI is sent along the horizontal chute rail 2 in the direction of arrow A, and is preliminarily positioned at position B drawn by an imaginary line.

In order to perform the above preliminary positioning, three positioning blocks 3a, 3bl and 3C are provided. These blocks are moved toward and away from the IC at the B-position as indicated by the reciprocating arrows, and when they are close (as shown by imaginary lines), they come into contact with the lead tips of the IC to perform a positioning function.

In this type of conventional device, there are four positioning blocks.
Some are individually set. At least three installations were required.

A preliminary positioning device provided with a positioning block in this manner must be provided with means for driving the block and means for controlling the drive, resulting in a large and heavy device and a complicated control mechanism.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and has a simple configuration that does not require driven members or drive control means, and furthermore, automatically reserves ICs transported by chute rails. The purpose is to provide a device that can perform positioning.

[Summary of the invention]

In order to achieve the above object, the device according to the present invention provides a T-square recess on the bottom of a chute rail for transporting ICs,
Further, the wall surface around the rectangular recess is a tapered surface that opens upward, and when the IC slid and conveyed along the chute rail reaches the recess, it falls into the recess under its own weight and is guided by the tapered surface. It is characterized in that it is configured so that it can be positioned by

[Embodiments of the invention]

Next, one embodiment of the present invention will be described with reference to FIG. This embodiment is an improvement of the known chute rail 2 shown in FIG. 2 by applying the present invention.

2' is a chute rail according to the present invention, 28' is a bottom surface of the conveyance section, and 2b' is an edge for guiding during conveyance.

1 is an IC being conveyed in the direction of the arrow by the chute rail 2'.

The imaginary line 1' indicates the IC positioned at the preliminary positioning position BK.

The bottom surface 2a' of the conveying portion is concave downward near position B to form a concave bottom surface 2C', and the periphery thereof is formed into a tapered surface that opens upward.

2 d / is a tapered surface on the upstream side in the conveyance direction, 2e' is a tapered surface on the downstream side, and 2f' is a tapered surface on both sides.

The intersection line between the peripheral tapered surface and the bottom surface 2c' of the recess is arranged so as to be in contact with the tip of the lead lb' of the ICI' at position B.

In the preliminary positioning device (FIG. 1) configured as described above, when the ICI sent in the direction of arrow A approaches position B, it falls into the bottom surface 20' of the recess due to its own weight, and the surrounding tapered surfaces 2dl, 2e / , 2 f/ to the preliminary positioning position B.

Therefore, the next step's conveying means (for example, a conveying arm equipped with a vacuum suction means, not shown) can easily and accurately pick up the ICI' at position B.

〔Effect of the invention〕

As described in detail above, the device according to the present invention has a simple configuration that does not include driven members or drive control means, and furthermore, is capable of automatically pre-positioning an IC transported by a chute rail. It has the excellent practical effect of being able to perform various tasks, and greatly contributes to reducing operating costs by making the overall structure of the ICI/Ndra smaller and lighter, reducing manufacturing costs, and reducing the number of maintenance, inspection and maintenance man-hours.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the preliminary positioning device of the present invention,
FIG. 2 is a partially cutaway perspective view. FIG. 2 is a perspective view showing an example of a known IC chute rail, and FIG. 3 is a plan view for explaining a conventional preliminary positioning device. 1.1'...IC% la...Package, lb
...Lead, 2.2'...Shoot rail, 2a,
2a'...bottom surface of the conveyance section, 2b, 2b'...edge for guiding, 20'...bottom surface of the recess, 2d'+2e',
2f'...Tapered surface around the bottom of the recess. Patent applicant: Hitachi Electronic Engineering Co., Ltd. Representative Patent attorney Tadashi Akimoto Actual firing 3 Figures

Claims (1)

[Claims] A rectangular recess is provided in the bottom of the chute rail for transporting the IC, and the wall surface around the rectangular recess is a tapered surface that opens upward, so that the IC slid and transported along the chute rail enters the recess. A preliminary positioning device for an IC handler, characterized in that when the IC handler reaches the IC handler, it falls into a recess under its own weight and is guided by the tapered surface and positioned.