Flexible lead bonding apparatus
OwnerThomas L. Angelucci, Sr., Joseph L. Angelucciinventors
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Abstract
An apparatus for bonding the flexible leads of a sprocketed lead frame tape to the terminals of an integrated circuit device is provided with a movable index station, movable bonding anvil means and a vertically moving bonding tool. The flexible leads on the lead frame tape are automatically positioned by the indexing station relative to the bonding tool with extreme final accuracy. The device to be bonded to the flexible leads may be manually or automatically positioned relative to said bonding tool to align the bonding tool, the flexible leads and the integrated circuit device terminals in axial bonding alignment.
Claims18
Apparatus for simultaneously bonding a plurality of electrical conductive flexible leads on a sprocketed lead frame tape to a rigid device comprising:
- a support frame,
- a tape supply reel rotateably mounted on said frame,
- a sprocketed lead frame tape on said supply reel,
- a first metering sprocket for pulling said lead frame tape from said supply reel.
- a tape take-up reel rotatably mounted on said frame,
- a second metering sprocket for paying out said lead frame tape to said take up reel,
- said metering sprockets eliminating tension in said tape therebetween,
- an index station intermediate said metering sprockets comprising a movable housing, having a tape transverse positioning guide for receiving said tape from said first metering sprocket, means for vertically positioning said lead frame tape, means for guiding said lead frame tape to said second metering sprocket and means for advancing said lead frame tape thereon.
- said means for advancing said lead frame tape comprising an advancing tape means and a locking tape means,
- a bonding station mounted on said support frame for bonding said flexible leads of said lead frame tape to said rigid device after said lead frame tape is advanced and positioned and locked in said indexing station by said advancing tape means and said locking tape means.
- support means for said device, and,
- means for vertically moving said indexing station independently of said tape reels between a position adjacent said support means and a position remote to said support means.
Apparatus for simultaneously bonding a plurality of electrical conductive flexible leads on a sprocketed lead frame tape to a rigid device comprising:
- a support frame,
- a tape supply reel mounted on said frame,
- a sprocketed lead frame tape on said supply reel,
- a first metering sprocket for pulling said lead frame tape from said supply reel,
- a tape take-up reel rotatably mounted on said frame,
- a second metering sprocket for paying out said lead frame tape to said take-up reel,
- an index station intermediate said metering sprockets comprising a housing and means for advancing said lead frame tape.
- said means for advancing said lead frame tape comprising an advancing tape means and a locking tape means, and
- a bonding station mounted on said support frame for bonding said flexible leads of said lead frame tape to said rigid device after said lead frame tape is advanced and positioned and locked in said said indexing station by said advancing tape means and said locking tape means,
- said bonding station comprising a guide arm mounted on said support frame, a vertically movable bonding tool holder slidably mounted on said guide arm, lever actuating means pivotably mounted on said support frame, said lever actuating means comprising a cam follower engaging a drive cam and spring means for urging said cam follower into engagement with said drive cam, and a load cell connected to said spring means for indicating the spring force being applied to said vertically movable bonding tool holder during a bonding operation of said flexible leads to said rigid device.
Apparatus for simultaneously bonding a plurality of electrical conductive flexible leads on a sprocketed lead frame tape to a rigid device comprising:
- a support frame,
- a tape supply reel mounted on said frame,
- a sprocketed lead frame tape on said supply reel,
- a first metering sprocket for pulling said lead frame tape from said supply reel,
- a tape take-up reel rotatably mounted on said frame,
- a second metering sprocket for paying out said lead frame tape to said take-up reel,
- an index station intermediate said metering sprockets comprising a housing and means for advancing said lead frame tape,
- said means for advancing said lead frame tape comprising an advancing tape means and a locking tape means, and
- a bonding station mounted on said support frame for bonding said flexible leads of said lead frame tape to said rigid device after said lead frame tape is advanced and positioned and locked in said indexing station by said advancing tape means and said locking tape means,
- said index station further includes a tape guide shoe supported by said housing and having a contact surface thereon for engaging said lead frame tape at said flexible leads, and vacuum manifold means in said tape guide shoe for urging said flexible leads into a common horizontal plane parallel to the surface of said rigid device.
Dependencies are inferred from the claim text.