Press apparatus

Abstract

A press apparatus capable of reducing a decrease in the productivity of an electromagnetic steel sheet due to a change in the shape of the electromagnetic steel sheet is provided. A press apparatus according to an embodiment of the present disclosure is a press apparatus that punches an electromagnetic steel sheet from a workpiece by using a punch and a die of a mold, including: a first punch that punches an electromagnetic steel sheet having a first shape; a second punch that punches an electromagnetic steel sheet having a second shape; and a selection unit that integrally operates a first pushing part that pushes the first punch and a second pushing part that pushes the second punch, and selects the first pushing part or the second pushing part in order to selectively push one of the first and the second punches.

1 . A press apparatus configured to punch an electromagnetic steel sheet from a workpiece by using a punch and a die of a mold, the press apparatus comprising:
 a first punch configured to punch an electromagnetic steel sheet having a first shape;   a second punch configured to punch an electromagnetic steel sheet having a second shape;   a selection unit configured to integrally operate a first pushing part configured to push the first punch and a second pushing part configured to push the second punch, and select the first pushing part or the second pushing part in order to selectively push one of the first and the second punches; and   a temperature detection unit configured to detect a temperature of the mold;   a drive unit configured to operate the selection unit; and   a control unit configured to control the drive unit so that the first or the second pushing part is selected based on a result of the detection by the temperature detection unit.   
     
     
         2 . The press apparatus according to  claim 1 , wherein
 the selection unit comprises a moving part configured to be movable in a first axial direction perpendicular to a direction in which the workpiece is fed and parallel to the workpiece,   the first and the second pushing parts being provided in the moving part, and   the first and the second pushing parts are arranged in a staggered manner in the first axial direction.   
     
     
         3 . The press apparatus according to  claim 2 , wherein the first and the second pushing parts are projection parts that project from the moving part. 
     
     
         4 . The press apparatus according to  claim 1 , comprising a punch holder through which the first and the second punches pass, wherein the selection unit comprises a housing part configured to house an end part of another of the first and the second punches on a side thereof opposite to a pushing direction in which the selection unit pushes the other of the first and the second punches so that an end part of the other of the first and the second punches on a side thereof in the pushing direction is housed in the punch holder. 
     
     
         5 - 7 . (canceled) 
     
     
         8 . The press apparatus according to  claim 1 , wherein pushing sets each composed of the first punch, the second punch, and the selection unit are arranged at intervals in the direction in which the workpiece is fed. 
     
     
         9 . The press apparatus according to  claim 1 , wherein the die comprises a first insertion part into which the first punch is inserted and a second insertion part into which the second punch is inserted. 
     
     
         10 . The press apparatus according to  claim 1 , wherein the workpiece is an Fe—Co alloy.