JPS622177A - Measuring instrument - Google Patents

Abstract

PURPOSE:To enable a plurality of electronic parts to be measured while continuously rotating a rotary drum by mounting a rotary table onto the rotary drum provided with a plurality of electric contact rows in a longitudinal direction, mounting the parts onto the rotary table, connecting the parts to electric contacts and arranging a followup device with corresponding contacts around the rotary drum. CONSTITUTION:A plurality of electric contact rows 2 are formed on the circumferential surface of a rotary drum 1 and a rotary table 1a is fit to the upper end of the drum 1. A plurality of electronic parts 13 are mounted on the table 1a and each terminal of the parts 13 is connected to any of the electric contact rows. Further, a brake member 10 is fit to a rotary shaft 3 projected downward from the drum 1. A rod 8 and a brake pad 9 both horizontally actuated by a solenoid 7 and a fixed contact mounting portion 5 with a vertical end portion are provided below the drum 1. A plurality of fixed contacts 4 corresponding to above-mentioned electric contact rows 2 are arranged to be extended from the mounting portion 5 and connected to a measuring mechanism 12 including a power supply. The contacts 4 are intermittently stopped while continuously rotating the drum 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a measuring device for continuously measuring electrical characteristics of electronic components such as semiconductor devices.

(Prior Art) The electrical characteristics of mass-produced electronic components such as semiconductor devices must be measured individually, but in order to reduce product costs, this measurement work is generally automated. .

An example of a conventional measuring device for this purpose is the one shown in FIG.

In the figure, (1) has multiple electrical contacts (2
), and this rotating drum (1) has a rotating table (not shown) on its upper surface.

A plurality of terminals for measuring electronic components are placed on this rotary table along its circumferential direction, and is configured to rotate together with the rotary drum (1).

Moreover, wiring is made within the rotating drum (1) so that the electrical contact (2) and the electronic component measurement terminal section are electrically connected.

On the other hand, this rotating drum (1) is connected to a drive motor via a rotation @ (3) and an intermittent operation mechanism (not shown) that temporarily stops the rotation of this rotating drum (1).

(4) is a plurality of fixed contacts, and these fixed contacts (4) are provided corresponding to the electric contacts (2) and are fixed to a fixed contact mounting base (5).

In the measuring device configured as described above, when measuring the electrical characteristics of an electronic component, the electronic component is supplied to a measurement terminal provided on a rotating table, and the rotating drum (1) is rotated. Then, after the rotating drum (1) has rotated by a predetermined angle, it comes into contact with the fixed contact (4), and the intermittent operation mechanism temporarily stops the rotation (1) of the rotating drum. At that time, a power source and a measuring mechanism (not shown) are activated to measure various electrical characteristics of the electronic component at that position.

Note that the measurement results are stored in a storage unit, which is also not shown.

[Problems to be Solved by the Invention] Since this type of conventional measuring device is configured as described above, it has the following problems.

■ While measuring the electrical characteristics of electronic components, the rotating drum (1) must be stopped each time using the intermittent operation mechanism to maintain good contact between the electrical contact (2) and the fixed contact (4). Things that must be done.

■ As the rotary table becomes larger, the weight increases, and since the rotary table and the rotary drum (1) are integrated, the inertial force increases, and a large braking mechanism is required to bring them to a sudden stop. At the same time, large torque is required for rapid rotation, and a large capacity drive motor is also required.

[Object of the invention] - This invention was made to solve the above-mentioned problems, and it eliminates the need to stop the 9-rotation drum when measuring the electrical characteristics of electronic components. Control! F71
No mechanism required 1. The purpose of this invention is to obtain a measuring device that requires only a small drive motor.

[Means for Solving the Problems] The measuring device according to the present invention is provided with a fixed contact tracking mechanism so that the fixed contact rotates by a predetermined rotation angle following the continuously rotating rotating drum. .

[Function] When the electrical contact of the rotating drum and the fixed contact come into contact, the fixed contact tracking mechanism follows the rotating drum and rotates the fixed contact by a predetermined angle, and during this rotation, the electrical characteristics of the electronic component are measured. do.

The fixed contact returns to its initial position after rotating by a predetermined angle.

[Embodiment] FIG. 1 shows a main part of a measuring device according to an embodiment of the present invention, and FIG. 1(A) is a plan view thereof, and FIG. 1(B) is a partially cutaway sectional view thereof.

In the figure, the same parts as in FIG. 2 are given the same reference numerals.

Therefore, a rotary drum (1a) having a rotary table (1a)
) is connected to a drive motor (not shown) via a rotating shaft (3), and has a fixed contact tracking mechanism (6) in the middle of this rotating shaft (3). This fixed contact follower mechanism (6) includes a rod (8) that reciprocates in the horizontal direction by a solenoid (7), and a brake pad (9) is provided at the tip of this rod (8). This brake pad (9
) is provided on the rotating shaft (3) with a braking unit (10) facing the rotating shaft (3).

(11) is a support arm that horizontally moves integrally with the rod (8).

A fixed contact mounting base (5) is fixed to the upright end of this support arm (11), and a plurality of fixed contacts (4) described above are mounted on this fixed contact mounting base (5). I'm being kicked.

Further, the fixed contacts (4) are electrically connected to a power source and a measuring mechanism (12), respectively.

The solenoid (7) is connected to a cam mechanism (not shown), and the cam mechanism is configured to operate in synchronization with the rotating drum (1) to determine the timing of operation of the solenoid (1). There is. In other words, a rotating drum (
When the electrical contact (2) of 1) reaches a predetermined position as the rotating drum (1) rotates, the cam mechanism activates the solenoid (7), which pulls the rod (8) horizontally, so that the brake pad , (9) and the braking part (10) of the rotating shaft (3) come into pressure contact with each other, thereby causing the support arm (1
1), the MI constant contact (4) follows the rotating drum (1) in a state in which it is in contact with the electrical contact (2) of the rotating drum (1), and rotates at .

The rotation angle of the support arm (11) is predetermined, and when the support arm (11) has rotated by a predetermined angle, the solenoid (1) is turned off via the cam mechanism.

On the other hand, the support arm (11) is provided with a return spring (not shown), which turns off the solenoid (7) and presses the brake pad (9) against the brake part (10) of the rotating shaft (3). As soon as it is released, it returns to its initial position.

In this way, when the rotary table (1a) comes to a predetermined position, the electronic component (13) supplied onto the rotary table (1a) makes contact between the fixed contact (4) and the electric contact (2). At the same time, the power supply and measurement structure (12) move, and the electrical characteristics of the rotating drum (1) are measured while it rotates at a predetermined angle.The measurement results are stored in a storage section (not shown) as in the past. be remembered.

[Effect of the invention 1 As described above, according to the present invention, a fixed contact is provided which rotates by a predetermined rotation angle following the continuously rotating rotating dome during the measurement of the electrical characteristics of an electronic component. The rotating drum itself does not need to be stopped temporarily (therefore, there is no need for an intermittent operation mechanism for this purpose, no need for a large control mechanism, and it is necessary to consider the driving torque during sudden rotation. Since there is no drive motor, there are advantages such as the need for a small-capacity drive motor.

[Brief explanation of the drawing]

FIG. 1 shows a measuring device according to an embodiment of the present invention, FIG. 1A is a plan view thereof, FIG. FIG. In the figure, (1) is a rotating drum, (1a) is a rotating table, (2) is an electric contact, (3) is a rotating shaft, (4) is a fixed contact, (5) is a fixed contact mounting base, (6) is a fixed contact tracking mechanism. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A rotating drum that continuously rotates and has a plurality of electrical contacts dividedly arranged on its outer peripheral surface, a plurality of fixed contacts provided corresponding to the electrical contacts of the rotating drum, and a connection between the fixed contacts and the electrical contacts. A measuring device comprising: a fixed contact tracking mechanism that rotates the fixed contact by following the rotating drum by a constant rotation angle of the rotating drum while maintaining contact.