Patent ID: 7159438
Filing Date: 2007-01-09
Classification: B21D

Abstract:
1. A multistage transfer press for stamped body parts, said transfer press comprising: a press frame including a plurality of press stages arranged in a row, with each stage including a press table, press supports mounted on the press table and a crown piece mounted on the press supports, a respective press ram mounted in the frame above a respective press table, such that the press rams of the respective stages can be moved up and down by a main drive, with each press ram and a respective sliding table arranged on the associated respective press table defining a respective tool accommodation space there-between; a respective tool arranged in each tool accommodation space and each comprising an upper tool part connected to the associated respective ram and a lower tool part connected to the associated respective sliding table; and, at least one transfer unit provided with a holding device for the temporary holding and transporting of a work piece on a path from the tool of one press stage to the tool of an adjacent press stage, with each transfer unit including at least one driving unit that is individually assigned to the holding device, and a multi-part articulated arm with a first leg and a second driving rod that are mutually connected at respective ends by a joint having a horizontal pivoting axis, and with an opposite end of the second driving rod being connected to and supporting the holding device and an opposite end of the first leg being connected to the driving unit for pivoting movement about a horizontal pivot axis; and wherein a respective separate individually activated pivot drive unit is provided on a respective first leg for pivoting the respectively connected second driving rod, and the driving unit for the first leg and the pivot drive for the associated second driving rod are arranged to cause the first leg and the associated second drive rod to pivot in the same pivot direction during a transfer operation.