JPS55110054A - Pellet selector - Google Patents

Pellet selector

Info

Publication number
JPS55110054A
JPS55110054A JP1613579A JP1613579A JPS55110054A JP S55110054 A JPS55110054 A JP S55110054A JP 1613579 A JP1613579 A JP 1613579A JP 1613579 A JP1613579 A JP 1613579A JP S55110054 A JPS55110054 A JP S55110054A
Authority
JP
Japan
Prior art keywords
pellets
drum
hole
conveyor
results
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1613579A
Other languages
Japanese (ja)
Inventor
Tatsuo Nishiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1613579A priority Critical patent/JPS55110054A/en
Publication of JPS55110054A publication Critical patent/JPS55110054A/en
Pending legal-status Critical Current

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  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

PURPOSE: To measure and classify the outer appearances and electrical characteristics of pellets automatically by the method wherein the time of collision among pellets is reduced and the probability of deterioration of characteristics due to mechanical impulses is reduced.
CONSTITUTION: Pellets are fed on conveyor 1 at random, are transported at low speed and in a heap and are supplied to drum 2 in small quantities. Drum 2 rotates vertically, ejects gas from hole 2b and separate pellets, which are draw onto hole 2c one by one. Each pellet is released from hole 2c by stopper 3a placed on the upper side and is put on conveyor 5 via shoot 3. Next, while pellets are in transport, their positions and outer appearances are detected (4), stored and rated. Then they are placed between belts 5 and 8 and are reversed by roller 6. Then, they are again detected (7), and the results are checked and stored. Based on these results, pellets are classified (9), and only pellets of good appearance are taken into electric characteristic drum 10.
COPYRIGHT: (C)1980,JPO&Japio
JP1613579A 1979-02-16 1979-02-16 Pellet selector Pending JPS55110054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1613579A JPS55110054A (en) 1979-02-16 1979-02-16 Pellet selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1613579A JPS55110054A (en) 1979-02-16 1979-02-16 Pellet selector

Publications (1)

Publication Number Publication Date
JPS55110054A true JPS55110054A (en) 1980-08-25

Family

ID=11908044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1613579A Pending JPS55110054A (en) 1979-02-16 1979-02-16 Pellet selector

Country Status (1)

Country Link
JP (1) JPS55110054A (en)

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