Die support mechanism, cylindrical workpiece generation device, and transfer press machine

Abstract

A die support mechanism includes: a die holding member including a slit horizontally passing through the die holding member, wherein a lower side from the slit forms a die holding base configured to hold a blanking die having a punch hole, an upper side from the slit forms a ceiling portion having a ceiling hole concentric with the punch hole, a part of a sheet metal inserted in the slit is punched out as a blank by a blanking punch, and the ceiling portion separates the sheet metal from the blanking punch; a support base configured to horizontally slidably support the die holding member; and a guide portion formed on an inner surface of the ceiling hole and configured to come into sliding contact with the blanking punch and to slide the die holding member to a position where the punch hole is centered on the blanking punch.

1 - 6 . (canceled) 
     
     
         7 . A die support mechanism comprising:
 a die holding member including a slit that horizontally passes through the die holding member, wherein   a lower side of the die holding member with respect to the slit forms a die holding base configured to hold a blanking die having a punch hole,   an upper side of the die holding member with respect to the slit forms a ceiling portion having a ceiling hole concentric with the punch hole,   a part of a sheet metal inserted in the slit is punched out as a blank by a blanking punch descending to the punch hole through the ceiling hole, and   the ceiling portion separates the sheet metal from the ascending blanking punch;   a support base configured to support the die holding member in a horizontally slidable manner; and   a guide portion formed on an inner surface of the ceiling hole and configured to come into sliding contact with the blanking punch and to slide the die holding member to a position where the punch hole is centered on the blanking punch.   
     
     
         8 . The die support mechanism according to  claim 7  further comprising:
 a positioning and fixing mechanism being capable of changing between a fixed state where the die holding member is fixed on the support base while being positioned at a predetermined origin position and a fixation-released state where the fixation of the die holding member is released; and 
 an origin adjustment mechanism being capable of supporting the support base in a horizontally slidable manner and of fixing the support base at any desired position. 
 
     
     
         9 . The die support mechanism according to  claim 8 , wherein the positioning and fixing mechanism includes:
 two pairs of pin holes coaxially aligned at the origin position, the pin holes of each pair of the two pairs of pin holes being formed in respective ones of the die holding member and the support base, and   a pair of positioning pins being fitted in respective ones of the two pairs of pin holes that are coaxially aligned.   
     
     
         10 . The die support mechanism according to  claim 9 , wherein the pair of positioning pins are disposed at positions where the pair of positioning pins restrict insertion of the sheet metal into the slit. 
     
     
         11 . A cylindrical workpiece generation device comprising:
 the die support mechanism according to  claim 7 ;   a blanking punch having a cylindrical shape and configured to punch out a blank in cooperation with the die support mechanism;   a drawing punch vertically movably housed inside the blanking punch; and   a drawing die disposed under the blanking die and held by the die holding base, the drawing die having a drawing hole smaller than the punch hole,   wherein a cylindrical workpiece is formed by the drawing punch pushing the blank into the drawing hole in a state where the blank is pressed against an opening edge of the drawing hole by the blanking punch.   
     
     
         12 . A cylindrical workpiece generation device comprising:
 the die support mechanism according to  claim 8 ;   a blanking punch having a cylindrical shape and configured to punch out a blank in cooperation with the die support mechanism;   a drawing punch vertically movably housed inside the blanking punch; and   a drawing die disposed under the blanking die and held by the die holding base, the drawing die having a drawing hole smaller than the punch hole,   wherein a cylindrical workpiece is formed by the drawing punch pushing the blank into the drawing hole in a state where the blank is pressed against an opening edge of the drawing hole by the blanking punch.   
     
     
         13 . A cylindrical workpiece generation device comprising:
 the die support mechanism according to  claim 9 ;   a blanking punch having a cylindrical shape and configured to punch out a blank in cooperation with the die support mechanism;   a drawing punch vertically movably housed inside the blanking punch; and   a drawing die disposed under the blanking die and held by the die holding base, the drawing die having a drawing hole smaller than the punch hole,   wherein a cylindrical workpiece is formed by the drawing punch pushing the blank into the drawing hole in a state where the blank is pressed against an opening edge of the drawing hole by the blanking punch.   
     
     
         14 . A cylindrical workpiece generation device comprising:
 the die support mechanism according to  claim 10 ;   a blanking punch having a cylindrical shape and configured to punch out a blank in cooperation with the die support mechanism;   a drawing punch vertically movably housed inside the blanking punch; and   a drawing die disposed under the blanking die and held by the die holding base, the drawing die having a drawing hole smaller than the punch hole,   wherein a cylindrical workpiece is formed by the drawing punch pushing the blank into the drawing hole in a state where the blank is pressed against an opening edge of the drawing hole by the blanking punch.   
     
     
         15 . A transfer press machine comprising:
 the cylindrical workpiece generation device according to  claim 11 ;   a ram supporting the blanking punch and a plurality of additional-machining punches aligned in a row with the blanking punch positioned at a head of the row;   a support block incorporating a plurality of dies corresponding to the plurality of additional-machining punches;   a base portion supporting the die holding member of the cylindrical workpiece generation device above the support block with a space therebetween; and   a transfer device configured to intermittently convey the workpiece that is punched down to an upper surface of the support block by the drawing punch, to the plurality of additional-machining punches.   
     
     
         16 . A transfer press machine comprising:
 the cylindrical workpiece generation device according to  claim 12 ;   a ram supporting the blanking punch and a plurality of additional-machining punches aligned in a row with the blanking punch positioned at a head of the row;   a support block incorporating a plurality of dies corresponding to the plurality of additional-machining punches;   a base portion supporting the die holding member of the cylindrical workpiece generation device above the support block with a space therebetween; and   a transfer device configured to intermittently convey the workpiece that is punched down to an upper surface of the support block by the drawing punch, to the plurality of additional-machining punches.   
     
     
         17 . A transfer press machine comprising:
 the cylindrical workpiece generation device according to  claim 13 ;   a ram supporting the blanking punch and a plurality of additional-machining punches aligned in a row with the blanking punch positioned at a head of the row;   a support block incorporating a plurality of dies corresponding to the plurality of additional-machining punches;   a base portion supporting the die holding member of the cylindrical workpiece generation device above the support block with a space therebetween; and   a transfer device configured to intermittently convey the workpiece that is punched down to an upper surface of the support block by the drawing punch, to the plurality of additional-machining punches.   
     
     
         18 . A transfer press machine comprising:
 the cylindrical workpiece generation device according to  claim 14 ;   a ram supporting the blanking punch and a plurality of additional-machining punches aligned in a row with the blanking punch positioned at a head of the row;   a support block incorporating a plurality of dies corresponding to the plurality of additional-machining punches;   a base portion supporting the die holding member of the cylindrical workpiece generation device above the support block with a space therebetween; and   a transfer device configured to intermittently convey the workpiece that is punched down to an upper surface of the support block by the drawing punch, to the plurality of additional-machining punches.