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Random-period chip transfer apparatus

  • US 20040154161A1
  • Filed: 10/02/2003
  • Published: 08/12/2004
  • Est. Priority Date: 02/07/2003
  • Status: Active Grant
First Claim
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1. A chip transfer apparatus for transferring chips onto works, the apparatus comprising:

  • a first carrier for carrying chips thereon;

    a second carrier for carrying works thereon;

    a plurality of end-effectors receiving chips from said first carrier and transferring the chips onto the works carried by the second carrier;

    a plurality of coaxial revolvers, each of which has said one end-effector, and can revolve around one common axis independently; and

    servo drives, each of which drives each of said coaxial revolvers to independently and randomly change periodic revolving speed of each coaxial revolver;

    wherein each of said end-effectors is inseparably mounted on each of said coaxial revolvers and distributed in one common circle around said axis, wherein each of said end-effectors moves sequentially keeping their order by the action of said servo drives, and is synchronized with said first carrier movement to receive a chip from said first carrier at substantially zero speed relative to said first carrier, and is synchronized with said second carrier movement to transfer said received chip onto the work on said second carrier at substantially zero speed relative to the second carrier, and is independently changed its revolving speed during the periodic motion including said receiving and transferring motion.

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