Special-shaped copper strip for lead frame and processing equipment thereof

• Main Authors: XIONG JUN, YANG ZENGKAI, YIN JIPING, XIONG ZHI
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2020
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BASIC ELECTRIC ELEMENTS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; SEMICONDUCTOR DEVICES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a special-shaped copper strip for a lead frame and processing equipment thereof, which relate to the technical field of integrated circuit leads and lead frames. The special-shaped copper strip comprises a flat strip, and the upper end surface of the flat strip is provided with two bosses which are arranged along the length direction of the flat strip and are symmetrical about the central line in the width direction of the flat strip; a groove body with the groove bottom flush with the upper end face of the flat strip is formed between the two bosses. The lower end faceof the flat strip is provided with two grooves which are symmetrically arranged about the center line in the width direction of the flat strip and located under the bosses respectively, the center line in the width direction of each groove is the same as the center line in the width direction of the corresponding boss, and a shoulder with the lower end face flush with the lower end face of the flatstrip is formed between