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 double-arn link (12) and a single-arm link (13) rotatably fitted to an eccentric drum (11A) integrated with the main gear (11);
- 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 a main gear supporting fixed shaft (20) for supporting the main gear, 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 the 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.