The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Mar. 15, 2000
Kenichi Endo, Sagamihara, JP;
Shozo Imanishi, Sagamihara, JP;
Aida Engineering Co., Ltd., , JP;
Abstract
A slide-type pressing machine has a stroke length adjustment mechanism in which: changing of the stroke length does not effect the bottom dead center position of the press, adjustment is simplified, and the press is suitable for high speed pressing operations. The slide-type pressing machine has an eccentric section of a crank shaft which causes a slider to move up and down. An arm extends past a fixed pivot of an upper toggle link. One end of the arm is connected to the slider by a connecting link. A drive link and a drive connecting link are connected by a connecting pivot. A worm wheel is disposed on a frame, and is concentric with the connecting pivot when the slide is at bottom dead center. The worm wheel is arranged so that its rotation angle can be adjusted. A second arm is disposed in a radial direction from the axis of the worm wheel. A second pin is located at an end of the second arm. The second pin is connected to the connecting pivot via a third link. The motion of the connecting pivot is restricted to either an arcuate or linear path. The position of the second pin is changed to adjust the stroke length of the slide and the bottom dead center is kept fixed.