AFTER-TREATMENT NETHOD OF STRIP-LIKE BLANKED LEAD FRAME

PURPOSE:To provide a method of carrying out the after treatment of a strip-like blanked lead frame, where ozone layer protection measures are taken for cleaning agent, and the strip-shaped blanked lead frames can be fed one by one without being deformed. CONSTITUTION:In a strip-like blanked lead fra...

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Bibliographische Detailangaben
1. Verfasser:	NAGAYAMA SADAO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL SEMICONDUCTOR DEVICES TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a method of carrying out the after treatment of a strip-like blanked lead frame, where ozone layer protection measures are taken for cleaning agent, and the strip-shaped blanked lead frames can be fed one by one without being deformed. CONSTITUTION:In a strip-like blanked lead frame after-treatment method where a strip-like lead frame 1 is cleaned after pressing to remove press oil attached to it and fed to a following process, the strip-like lead framed 1 which have been subjected to press working, stacked up in a stacker 2 are dipped into a cleaning fluid tank 3 filled with surface-active agent-containing alkaline cleaning fluid or neutral cleaning fluid kept at a temperature of over 40 deg.C. Ultrasonic vibrations are given to cleaning fluid to clean the strip-like lead frames 1 in the stacker 2, and then the lead frames 1 are taken out from the stacker 2 one by one after they are cleaned and transferred to a following process.