JP3094705B2 - IC handler for controlling IC transport speed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC handler for supplying an IC to be measured to a measuring section, measuring the IC at the measuring section, and classifying and storing the IC in a housing section based on the measurement result.
This is for an IC handler that controls the supply and storage speed of C.

[0002]

2. Description of the Related Art FIG. 3 shows a configuration example of a general IC handler. FIG. 3 shows a configuration of an apparatus for performing a temperature test of an IC. 11 is a supply unit, 12A is a motor, 12B is a supply shuttle, 13A is a preheating unit, 13B is a measurement unit, and 13B.
C is an accommodation buffer, 14A is a motor, 14B is an accommodation shuttle, and 15 is an accommodation unit. In FIG. 3, the IC set in the supply unit is supplied to the preheating unit 1 by the supply shuttle 12A.
Moved to 3A. Supply shuttle 12B is motor 12A
Move left and right by rotating. In FIG. 3, since eight measuring units are simultaneously measured in the measuring unit 13B, the preheating unit 13A distributes and supplies ICs to eight locations by the supply shuttle 12B.

[0003] The IC whose measurement has been completed by the measuring section 13B is stored in the storing buffer 13C, and waits until the turn to be stored in the storing section 15 by the storing shuttle 14B. The accommodation shuttle 14B accommodates the ICs accommodated in the accommodation buffer 13C, classifies them by measurement results, and accommodates them in the accommodation part 15. The supply shuttle 14B moves left and right by rotating the motor 14A. The motors 12A and 14A use a servo motor, a pulse motor, or the like.

[0004]

SUMMARY OF THE INVENTION The transport speed of an IC is
The processing capacity of the handler is determined. The higher the transport speed, the higher the processing capacity. Therefore, in general, the IC is always transported at a high speed in order to increase the processing capacity of the IC handler. However, in FIG. 3, when the measurement time of the measurement unit 13B is longer than the supply time of the IC to the measurement unit 13B and the accommodation time from the measurement unit 13B, the IC handler supplies and accommodates the IC at a high speed, and then the measurement is performed. The transport was stopped until the process was completed. However, when the IC is conveyed at a high speed, there is a problem that a displacement occurs when the motor is stopped, and consequently a conveyance error easily occurs, and that components used for the conveyance are greatly deteriorated.

[0005] For example, it is assumed that the IC for which measurement has been completed is accommodated in the accommodation buffer 13C, and the time for setting the next IC from the preheating unit 13A to the measurement unit 13B is 5 seconds. Here, assuming that the measurement time is 15 seconds, the IC handler supplies and accommodates the IC in 5 seconds, and then stops transporting for 10 seconds.
The present invention controls the transport speed of the IC within a range that does not deteriorate the processing capability according to the measurement time of the measuring unit 13B, thereby reducing the transport error of the IC and reducing the deterioration of the transport components. With the goal.

[0006]

According to the present invention, there is provided a supply unit for supplying an IC to be measured.
Supply shuttle 12B holding supply and IC and supply shuttle 1
IC supply means 2 having motor 12A for moving 2B
A measuring unit 13B for measuring the IC supplied by the IC supply unit 2 and a storage buffer 13C for waiting for the IC for which measurement has been completed; a storage shuttle 14B for holding the IC for which measurement has been completed; A motor 14A for moving the motor 14B, an accommodating unit 15 for accommodating the IC whose measurement has been completed, a CPU 1 for controlling the IC supplying means 2, the measuring means 3, and the IC accommodating means 4, and a storage means 5 for writing motor drive parameters for each address. The CPU 1 reads out the parameter that operates at the highest speed among the motor drive parameters written in the storage circuit 5 and reads out the IC supply means 2
And the IC supply means 2 supplies the IC to the measurement means 3, measures the measurement time of the measurement means 3, compares the IC supply / accommodation time with the measurement time, and determines that the measurement time is longer than the supply / accommodation time. Then, the motor drive parameters written in the storage means 5 are rewritten by the arithmetic and control
Motor 12A of supply means 2 and motor 1 of IC housing means 4
The drive speed of 4A is controlled.

[0007]

FIG. 1 shows the configuration of an IC handler for controlling an IC transport speed according to the present invention. 1 is a CPU and 2 is an I
C supply means, 3 is a measuring means, 4 is an IC accommodating means, 5 is a storage means. 1, the IC supply means 2 corresponds to the supply unit 11, the motor 12A, and the supply shuttle 12B in FIG. The measuring means 3 includes a preheating section 13A and a measuring section 13B.
And the storage buffer 13C. The IC accommodation means 4 corresponds to the motor 14A, the accommodation shuttle 14B, and the accommodation part 15.

The storage means 5 uses, for example, a RAM.
Motor drive parameters such as the acceleration, deceleration, and maximum speed of the motor are written in advance in the address of the storage means 5, read out to a specific address in accordance with an instruction of the CPU 1, and read out from the motor 12 A of the IC supply means 2 and the IC housing means 4.
Control the operation of 14A.

The CPU 1 has a speed adjusting means 1A, a time measuring means 1B, and a calculating / controlling means 1C.
To measure the IC measurement time of the measurement unit 13B. The measured time is input to the calculation / control means 1C, the IC transport speed capable of supplying and storing the IC during the measurement time is calculated, and the address of the motor drive parameter preset in the storage means 5 is stored. Select The motor drive parameter of the address selected by the arithmetic and control means 1C is input to the speed adjusting means 1A, and the motor is driven at the speed according to the motor drive parameter to carry the IC.

[0010]

Next, the operation of FIG. 1 will be described with reference to the flowchart of FIG. In step S1 of FIG. 2, since the measurement time in the measurement unit 13B of the IC is unknown, the motor 12
A motor driving parameter is written to a specific address of the storage means 5 so that the driving speed of A · 14A becomes the maximum speed.

In step S2 of FIG.
The control means 1C reads the motor drive parameters written at the specific address of the storage means 5, drives the motor 12A with the parameters, and conveys the IC to the measuring unit 13B. In step S3 of FIG. 2, when the number of ICs simultaneously measured in the measuring unit 13B is uniform and the measuring conditions are satisfied, the CPU 1 requests the measuring unit 3 to start measurement and starts measurement by the time measuring means 1B of the CPU 1. In step S4,
When the measurement of the IC is completed, the measurement by the time measuring means 1B of the CPU 1 is completed.

In step S5, the IC measurement time measured in step S4 is compared with the IC supply time to the measurement unit 13B and the IC accommodation time from the measurement unit 13B. Calculate the difference time.
The time calculated here is a time during which the motor stops when the driving speed of the motor is supplied and stored at the maximum speed.
That is, the calculated time is a time during which the processing performance is not reduced even if the operation of the motor is delayed.

Step S6 in FIG. 2 is a time obtained by adding the difference time calculated in step S5 and the time when the driving speed of the motor is supplied and stored at the maximum speed. The drive parameter is selected from the address written in the storage means 5. In step S7 of FIG. 2, it is checked whether the motor drive parameters determined in step S6 match the parameters written in the specific address of the storage unit 5. If they do not match, in step S8 in FIG. 2, the data of the specific address in the storage means 5 is rewritten to the motor drive parameter to the value determined in step S6.

In step S9 of FIG. 2, the motor whose IC has been measured is driven according to the motor drive parameters written in the specific address of the storage means 5 and is classified and accommodated.
Unless there is no IC to be measured in step 10, the operation of step S9 and the operation of step S2 are performed in parallel. The operations from step S2 to step S9 are repeated until there are no more ICs to be measured.

[0015]

According to the present invention, according to the IC measurement time of the measuring means, the IC can be used within a range in which the processing capacity is not deteriorated.
Since the transfer speed is controlled, errors in IC transfer can be reduced, and deterioration of transfer components can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of FIG.

FIG. 3 is an explanatory diagram showing a configuration of an IC handler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 IC supply means 3 Measurement means 4 IC accommodation means 5 Storage means

Claims (1)

(57) [Claims] 1. A supply unit (11) for supplying an IC to be measured and
Supply shuttle (12B) holding supply C and supply shuttle (12B)
IC supply means (2) having a motor (12A) for moving the IC, a measuring unit (13B) for measuring the IC supplied by the IC supply means (2), and a storage buffer for waiting for the IC having been measured.
(13C), a storage shuttle (14B) for holding the measured IC, a motor (14A) for moving the storage shuttle (14B), and a storage unit for storing the measured IC ( 15), a CPU (1) for controlling the IC supply means (2), the measurement means (3), and the IC housing means (4), and a storage means for writing motor drive parameters for each address
The CPU (1) reads out the motor drive parameter written in the storage circuit (5) and operates at the highest speed and inputs the readout parameter to the IC supply means (2). ) Supplies the IC to the measuring means (3), measures the measuring time of the measuring means (3), compares the IC supplying / accommodating time with the measuring time, and stores the data when the measuring time is longer than the supplying / accommodating time. The motor drive parameters written in the means (5) are rewritten by the arithmetic and control means (1C), and the motor (12) of the IC supply means (2) is rewritten.
An IC handler for controlling an IC transport speed, characterized by controlling a driving speed of a motor (A) and a motor (14A) of an IC housing means (4).