Apparatus for securing tape to leads of semiconductor lead frame
AssigneeSumitomo Metal Mining Co., Ltd.
InventorsTeruaki Hamagami, Kazuo Maetani, Fumio Sato
Life of this patent
Estimating the term…
Abstract
An apparatus for securing a tape to leads of a semiconductor lead frame, includes, a tape feeder, a punch for punching the tape and for pressing the punched tape against the lead frame, a mechanism for horizontally moving the lead frame and setting it in the punch and the press, and a mechanism for adjusting the timing of the feeder, the punch, the press and the moving mechanism. The punch and the press include a fixed upper die on which the lead frame rests and in which the tape is supported, the punch being movable against the tape for punching out a portion of the tape and for pressing it against the lead frame.
Claims22
An apparatus for the pasting of at least one tape portion from at least one elongated tape onto at least one lead frame unit, comprising, a machine frame, means on said frame for intermittently feeding a predetermined length of insulated tape to a punching and pasting station, means for punching said tape at said station to produce said tape portion and for pressing said tape portion against said lead frame unit, meand for horizontally moving said lead frame unit from a feed table to said punching and pressing means at said station, means on said feed table for positioning a plate comprised of a plurality of interconnected lead frame units, said positioning means being defined by an upper surface of said feed table having a depression therein for the reception of the plate, plate access holes extending through said table and overlapping with portions of said depression to thereby provide access for the manual removal of the plate from said table, said moving means including plate engaging means and means for reciprocating said plate engaging means for setting the plate at said station and for returning the plate to said table after being pasted, and means for timing the operation of said feeding means, said punching and pressing means and said moving means, said punching and pressing means including a stationary upper die member having a surface on which said lead frame unit is supported, means in said die member for supporting said tape a spaced distance from said surface, and a punch member movable toward and away from said surface for punching said tape.
An apparatus for the pasting of at least one tape portion from at least one elongated tape onto at least one lead frame unit, comprising, a machine frame, means on said frame for intermittently feeding a predetermined length of insulated tape to a punching and pasting station, said tape feeding means comprising a tape feed roller operatively engageable with an assembly including a rotatable feed cam, a pawl in operative engagement with said cam, a rachet wheel fixed to said feed roller for rotating same in only one direction for feeding a predetermined length of tape, a rotatable tape rewind shaft, means for rotating said shaft and said feed cam in synchronism, and a tape rewind wheel for rewinding the tape after the punching and pressing operation, said reel being mounted for slipping movement on said shaft for maintaining a predetermined tension in the tape upon tape rewind, means for punching said tape at said station to produce said tape portion and for pressing said tape portion against said lead frame unit, means for horizontally moving said lead frame unit from a feed table to said punching and pressing means including a stationary upper die member having a surface on which said lead frame unit is supported, means in said die member for supporting said tape a spaced distance from said surface, and a punch member movable toward and away from said surface for punching tape.
An apparatus for the pasting of at least one tape portion from at least one elongated tape onto at least one lead frame unit, comprising, a stationary upper die having an upper surface on which said lead frame unit is supported and further having punch channels opened for pressing punched tape portions against said lead frame unit and a tape channel internally lying perpendicular to said punch channels, a lower die having punch members passing through said punch channels to punch the tape, said punch members being provided with suction means for suctioning the punched tape portion by vacuum so as to register said tape portion with a pasting position of said lead frame unit, said lower die further having means for moving said punch members toward and away from said upper die such that the terminal ends of said punch members project outwardly of the upper surface of said upper die at the end of the movement of said punch members toward said upper die, heating means spaced a predetermined distance from said upper surface of said upper die and biased by a spring means toward said upper die, means for feeding a predetermined length of said tape passing through said tape channel of said upper die, and means for setting the lead frame to a predetermined position on said upper surface of said upper die.
An apparatus for the pasting of tape portions from at least on elongated tape onto lead frame units, series connected together to form an elongated web comprising, a stationary upper die having an upper surface on which said web is supported and further having punch channels opened for pressing punched tape portions against web and a tape channel internally lying perpendicular to said punch channels, a lower die having punch members passing through said punch channels to punch the tape, said punch members being provided with suction means for suctioning the punched tape portion by vacuum so as to register said tape portion with a pasting position of said web, said lower die further having means for moving said punch members toward and away from said upper die such that the terminal ends of said punch members project outwardly of the upper surface of said upper die at the end of the movement of said punch members toward said upper die, heating means spaced a predetermined distance from said upper surface of said upper die and biased by a spring means toward said upper die, means for feeding a predetermined length of said tape passing through said tape channel of said upper die, and means for setting the web a predetermined position on said upper surface of said upper die.
Dependencies are inferred from the claim text.