Press machine
AssigneeYamada Dobby Co., Ltd.
InventorAkihiro Yoshida
Life of this patent
Estimating the term…
Abstract
A press machine includes a frame, a first crankshaft rotated by a driving source, a second crankshaft connected with a slide, and a connection mechanism provided with a pair of levers connected with each other so as to carry out their bending-stretching motion as the first crankshaft is rotated. One lever has a first pivot and is connected, through the first pivot, with a position adjusting device for adjusting the position of the first pivot in the vertical or horizontal direction. The other lever has a second pivot and is connected, through the second pivot, with the eccentric shaft portion of the second crankshaft. The slide is connected with other eccentric shaft portion of the second crankshaft.
Claims8
A press machine comprising
- a frame;
- a first crankshaft rotated by a driving source;
- a connection mechanism having a pair of levers pivotally connected with each other so as to perform a bending-stretching motion, one of the levers having a first pivot not moved by said bending-stretching motion and the other having a second pivot moved by said bending-stretching motion;
- a link for linking said first crankshaft with said connection mechanism so as to make said pair of levers perform an amount of bending-stretching motion with rotation of said first crankshaft;
- a second crankshaft having a first eccentric shaft portion connected with said second pivot and a second eccentric shaft portion connected with a slide;
- and
- a position adjusting device connected to the first pivot and movable for adjusting the position of said first pivot thereby to change the amount of bending-stretching motion.
Dependencies are inferred from the claim text.