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:
Aug. 17, 1999
Filed:
Aug. 02, 1996
Kenichi Endou, Sagamihara, JP;
Hideo Itakura, Sagamihara, JP;
Aida Engineering Ltd., Kanagawa, JP;
Abstract
A transfer apparatus for use in a press in which successive workpieces are sequentially transferred from one to the next of a plurality of working stages arranged along a line. The transfer apparatus has a transfer bar having a plurality of workpiece holding devices such as air chucks each being capable of holding and releasing the workpiece, and a driving unit provided at the rear side of the press. The driving unit has advance/return mechanism having a first servo-motor and a rack-pinion mechanism which cooperate in driving the transfer bar in advance and return directions, a lift/down mechanism having a second servo-motor and a rack-pinion mechanism which cooperate in driving the transfer bar in lift and down directions, and an approach/retract device having a third servo-motor and a rack-pinion mechanism which cooperate in driving the transfer bar in approaching and retracting directions, so that successive workpieces are transferred from one to the next working stages of the press so as to undergo a series of steps of press work. Dies and workpieces are easily observed during the press working and efficiency of die exchanging work is improved because the driving unit is disposed on the rear side of the press.