Patent ID: 9162274
Filing Date: 2015-10-20
Classification: B21D

Abstract:
1. A dual double-action can body maker comprising: a ram drive mechanism including: a crankshaft rotatably supported by a bearing, provided with a first throw of crankshaft and a second throw of crankshaft, the first throw of crankshaft having a turning direction contrary to the second throw of crankshaft in a radial direction of the crankshaft; a first primary connecting rod and a second primary connecting rod; a first swing lever and a second swing lever; a first secondary connecting rod and a second secondary connecting rod; a first guide rail and a second guide rail; a first slide yoke and a second slide yoke; and a first ram and a second ram; wherein: the first primary connecting rod is rotatably connected at one end with the first throw of crankshaft, and at an opposite end with a swing arm of the first swing lever; the first swing lever is rotatably supported at one end, and rotatably connected at an opposite end with one end of the first secondary connecting rod, which is rotatably connected at an opposite end with the first slide yoke; the first slide yoke is installed on the first guide rail and connected slidingly relative to the first guide rail, which is fixed relative to a frame; and the first slide yoke is fixedly connected with the first ram; the second primary connecting rod is rotatably connected at one end with the second throw of crankshaft, and at an opposite end with a swing arm of the second swing lever; the second swing lever is rotatably supported at one end, and rotatably connected at an opposite end with one end of the second secondary connecting rod, which is rotatably connected at an opposite end with the second slide yoke; the second slide yoke is installed on the second guide rail and connected slidingly relative to the second guide rail, which is fixed relative to the frame; and the second slide yoke is fixedly connected with the second ram; and the first throw of crankshaft, the first primary connecting rod, the first swing lever, the first secondary connecting rod, the first guide rail, the first slide yoke and the first ram are located at one side of the crankshaft, constituting a first ram drive mechanism; the second throw of crankshaft, the second primary connecting rod, the second swing lever, the second secondary connecting rod, the second guide rail, the second slide yoke and the second ram are located at an opposite side of the crankshaft, constituting a second ram drive mechanism.