Slide drive unit of a press
AssigneeKomatsu Ltd.
InventorsAkio Kawado, Shigeru Nakayama
Life of this patent
Estimating the term…
Abstract
Angle (θ) formed by straight lines (A, B) connecting a fixed shaft (23) and two connecting shafts (24, 25) of a triaxial link (16) of a slide drive unit (10) is set acute, so that position of a slide at any crank angle can be made higher than a conventional arrangement throughout the entire slide motion and the slide can be located above a height necessary for conveying a workpiece for a longer time per the same cycle speed, thereby driving a transfer feeder with sufficient time, allowing secure conveyance of the workpiece while improving productivity of a press and avoiding restriction of design.
Claims2
A slide drive unit of a press, comprising:
- a main gear (11);
- a main gear supporting fixed shaft (20) for the main gear to be supported;
- a double-arm link (12) and a single-arm link (13) rotatably fitted to an eccentric drum (11A) integrated with the main gear (11) of which a rotation center is eccentric relative to the main gear supporting fixed shaft;
- a connecting rod (14) connected to one end of the double-arm link (12);
- an intermediate link (15) connected to the other end of the double-arm link (12);
- and
- a triaxial link (16) rotated around a fixed shaft (23) parallel to the main gear supporting fixed shaft (20), the triaxial link being connected with the intermediate link (15) and the single-arm link (13),
- wherein an angle (θ) formed by a straight line (A) connecting a connecting shaft (24) of the intermediate link (15) with the fixed shaft (23) of the triaxial link (16) and another straight line (B) connecting a connecting shaft (25) of the single-arm link (13) and the triaxial link (16) and the fixed shaft (23) of the triaxial link (16) is acute.
Dependencies are inferred from the claim text.