Patent ID: 7363797
Filing Date: 2008-04-29
Classification: B21D,F28D,F28F

Abstract:
1. A device for producing a corrugated plate, comprising: feeding means for intermittently feeding a metal plate; a positioning member fixed to an end portion, in a feed direction, of the metal plate and having a plurality of notches with a pitch equal to a feed pitch for the metal plate; a positioning pawl that moves back and forth, in a direction orthogonal to the feed direction of the metal plate, so that the positioning pawl can engage with and disengage from notches of the positioning member; and a mold for molding a U-shaped bent portion in the metal plate; wherein the feeding means, positioning member, positioning pawl, and the mold are configured to perform a pressing step of sequentially molding a plurality of U-shaped bent portions in the metal plate, wherein the U-shaped bent portions are fed in a direction orthogonal to the direction of the U-shaped bent portions and positioned, and are pressed in a state in which the position is released, and wherein, after positioning the metal plate by engaging the positioning pawl with a predetermined notch of the positioning member, the positioning pawl is disengaged from the predetermined notch so as to release the metal plate and the metal plate is then pressed by the mold so as to mold the U-shaped bent portion.