Transfer system
AssigneeLivernois Automation Company
InventorSabatino A. Bianchi
Life of this patent
Estimating the term…
Abstract
A transfer device for indexing workpieces through successive stations of a die in a stamping press is provided wherein the carriage and work engaging fingers are driven through separate drives actuated by the press ram. Each drive has an output shaft for operating the carriage and work engaging fingers, respectively. Each drive is compact and saves space by utilizing a plurality of links to drive the output shaft through 180.degree. of rotation so that desired accelertion and decelaration can be achieved. Each drive is a stand-alone mechanism adapted for use with existing transfer devices.
Claims27
A drive for a transfer device having a reciprocating ram, the transfer device being driven by the ram and having a support, a carriage mounted on the support for movement along a path, work engaging fingers mounted on the carriage for movement in a path transverse to the path of movement of the carriage, such that as the ram reciprocates, the carriage and work engaging fingers transfer workpieces between successive stations, wherein the drive comprising
- a base,
- a housing supported on said base,
- a plurality of interconnecting links within said housing operably connected to the ram,
- cam means on one of said housing and one of said links,
- cam follower means on the other of said housing and one of said links, and
- an output shaft driven by said links and operably connected to one of the carriage and the work engaging fingers,
- said plurality of links comprising
- a first link connected to said ram means at one end and having follower means at the other end,
- a second link having a slot for receiving said follower means, said cam follower means comprising a first cam roller on said second link, and
- a third link connected at one end to said second link and to a crankshaft connected to said output shaft at the other end,
- such that as the ram reciprocates, the links pivot with respect to each other inside said housing causing said cam follower means to move along said cam means to rotate said output shaft 180.degree., such that the acceleration and deceleration of the transfer device is achieved.
A transfer device for indexing a work piece progressively through a plurality of stations, comprising a support, a carriage reciprocally mounted on said support along a path, work engaging fingers mounted on said carriage for reciprocal movement in a path transverse to the path of said carriage, a ram operable along a path transverse to the path of both said carriage and said work engaging fingers, drive means interconnecting said ram means and the transfer device for moving said carriage and said work engaging fingers, said drive means comprising
- a base,
- a housing supported on said base,
- a plurality of interconnecting links within said housing operably connected to the ram,
- cam means on one of said housing and one of said links,
- cam follower means on the other of said housing and said one of said links, and
- an output shaft driven by said links and operably connected to one of the carriage and the work engaging fingers such that as the ram reciprocates, the links pivot with respect to each other inside said housing causing said cam follower means to move along said cam means to rotate said output shaft 180.degree., such that the desired acceleration and deceleration of the transfer device is achieved,
- said drive means comprising a base, a housing supported on said base, a plurality of links within said housing operably connected to said ram means, cam means on said housing, cam follower means on one of said parallel links for engagement with said cam means, an output shaft operably connected to one of said links, means on said output shaft for driving engagement with one of said carriage and said work engaging fingers to reciprocate either said carriage or said work engaging fingers.
Dependencies are inferred from the claim text.