Patent ID: 7308816

Claim:
A forming machine which includes a die assembly, comprising: a cutting mechanism adapted to cut a feed material; a conveying clamp mechanism adapted to deliver a cut section of the feed material from said cutting mechanism to the die assembly; a feeding mechanism adapted to advance the feed material to said cutting mechanism; a first transmission mechanism connected to said cutting mechanism and said conveying clamp mechanism; a drive mechanism driving said first transmission mechanism; and a second transmission mechanism driven by said drive mechanism for driving said feeding mechanism, said second transmission mechanism including a driven wheel driven by said drive mechanism, an elongated swing plate connected to said feeding mechanism, confronting said driven wheel, and having an elongated through hole, and an eccentric pin projecting axially from said driven wheel and connected slidably to said elongated through hole in said swing plate, said swing plate having a pivot axis which is substantially parallel to an axis of said driven wheel, said eccentric pin sliding relative to said swing plate while rotating along with said driven wheel so that said swing plate is turned to and fro in a cycle motion and completes one cycle for each revolution of said eccentric pin, wherein said swing plate executes a first stroke movement and a second stroke movement in one cycle, said eccentric pin rotating by a first angle for said first stroke movement and a second angle for said second stroke movement, said first angle being smaller than said second angle, and wherein said driven wheel is a driven gear which is driven by said drive mechanism, said second transmission mechanism further including a reciprocating unit connected to said swing plate and said feeding mechanism.