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    • 3. 发明专利
    • SOLDERING REFLOW FURNACE
    • JPH01118369A
    • 1989-05-10
    • JP27633387
    • 1987-10-30
    • FUJITSU LTD
    • CHIBA KIYOSHIKIKUCHI MISAO
    • H05K3/34B23K1/008B23K3/04
    • PURPOSE:To prevent the camber of a printed circuit board by transferring the printed circuit board by a specified transfer means inside a furnace in the soldering reflow furnace fitting a chip part via a soldered layer to both faces of the printed circuit board. CONSTITUTION:A creamy solder 44 is coated on the wiring pattern formed on one face of a printed circuit board 40 and the chip part 46 of a resistor, etc., is fitted thereon by the solder layer of both end parts thereof. This printed circuit board 40 is transferred by the base seat part of a mesh belt 3 of the inside of a reflow furnace and a soldering part 44' is formed by reflowing the creamy solder 44. A creamy solder 48 is then coated on the opposite face of the printed circuit board 40 subjected to one side packaging and after fitting a chip part 50 thereon a soldering part 48' is finally formed by reflowing by supporting this printed circuit board 40 by the supporting part 5 on the mesh belt 3. A printed board free from camber is obtainable and also the chip part 46 soldered previously is not displaced nor dropped at the soldering time of the succeeding chip part 50.
    • 5. 发明专利
    • WORK TABLE FOR MOUNTING BOARD
    • JPH09172294A
    • 1997-06-30
    • JP32863095
    • 1995-12-18
    • FUJITSU LTD
    • KOGURE SEIJICHIBA KIYOSHI
    • B23P19/00H05K13/00
    • PROBLEM TO BE SOLVED: To appropriately support a board of any parts device with simple constitution by providing expansion members under a printed substrate, giving pressure on the printed board by means of filling fluid and to prevent a work table from coming into contact with the printed board by means of the discharge of fluid. SOLUTION: The expansion members (air bags) 31 changing the volume of fluid by means of filling/discharging it are provided under the printed board 15. Pressure is given on the printed board 15 by feeding fluid and the work table is prevented from coming into contact with the printed board 15 by means of discharging fluid. In the work table for double face mounting, the printed boards 15 of a size out of various sizes is received and both clampers 3 and 4 appropriately sandwich the printed board 15. The two air bags 31 made of rubber are provided on a supporting board 12 in parallel and air is filled/ discharged. Consequently, the board of any parts arrangement can appropriately be supported with simple constitution.