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Unit for feeding semifinished parts to a forming machine, particularly a press
| Details |
Inventors: Marinoni, Giorgio; Baroncelli, Arturo;
Assignee: Comau S.p.A. (Grugliasco, IT)
Primary Examiner: Skaggs; H. Grant
Assistant Examiner: Oruzbick; Carol L.
Attorney, Agent or Firm: Dvorak and Traub
A unit for feeding semifinished parts, whereby a carriage travelling along a straight slideway supports a rectangular table in turn supporting a parallelepiped stack of semifinished parts and which is floatable by means of an air cushion. The carriage presents a device for positioning the stack and comprising four articulated arms, each fitted to the carriage and having, on its free end, a locating element designed to contact the lateral walls of the stack. |
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DETAILED DESCRIPTION It is an object of the present invention to provide a semifinished part feed unit enabling straightforward, correct positioning of the stack.
According to the present invention, there is provided a unit for feeding semifinished parts to a forming machine, particularly a press, and comprising loading means for supporting a substantially neat stack of said semifinished parts; said loading means moving between at least a loading station and an unloading station featuring gripping means for withdrawing said semifinished parts one by one; characterized by the fact that said loading means comprise a carriage, and a table for supporting said stack; said unit also comprising means for positioning said stack in relation to said carriage.
According to the present invention, there is also provided a method of positioning a substantially neat stack of semifinished parts supported on a table in turn supported on a carriage in a unit for feeding semifinished parts to a forming machine, particularly a press; characterized by the fact that it comprises: a first stage wherein a reference body is positioned on said table; a second stage wherein a positioning device, comprising at least three arms with locating ends, is positioned with said ends contacting the walls of said reference body; a third stage wherein the positions of said ends in relation to said carriage are memorized; a fourth stage wherein said articulated arms are withdrawn from said reference body, and said reference body is removed from said table; a fifth stage wherein a stack of semifinished parts is placed on said table, and the table is rendered floating; a sixth stage wherein said articulated arms are brought up to said stack, and said ends are set to the same position measured previously in relation to said carriage; a seventh stage wherein said stack is positioned manually by moving said table, and its walls are positioned contacting said ends; an eighth stage wherein the supporting device is de-activated, and said table is rendered integral with said carriage
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