Sheet material processing apparatus, press die, and die setting body

Abstract

A sheet material processing apparatus has a pressurizing part of a sheet material and a supporting part of the pressurized sheet material. The apparatus includes an end face pressing upper press die that receives a pressurizing force, an end face pressing lower press die that is arranged on the supporting part and faces the end face pressing upper press die so that an end face of the sheet material is inserted between the end face pressing upper and lower press dies, an end face pressing part that, with the end face pressing upper press die being moved toward the end face pressing lower press die, presses the end face of the sheet material, and an end face pressing width adjusting part that sets a pressing width of the end face of the sheet material.

1 . A sheet material processing apparatus having a pressurizing part for pressurizing a sheet material and a supporting part for supporting the pressurized sheet material, characterized in that the apparatus comprises:
 an end face pressing upper press die that receives a pressurizing force from the pressurizing part;   an end face pressing lower press die that is arranged on the supporting part and faces the end face pressing upper press die so that an end face of the sheet material is inserted between the end face pressing upper and lower press dies;   an end face pressing part that, with the pressurizing force from the pressurizing part moving the end face pressing upper press die toward the end face pressing lower press die, presses one end face of the sheet material along a bend line of the sheet material to be bent; and   an end face pressing width adjusting part that sets a pressing width of the one end face of the sheet material so that, when the end face pressing part presses the one end face, a contact face of the one end face of the sheet material comes in front of, in a direction in which the sheet material is inserted between the end face pressing upper and lower press dies, a pressurizing center of the pressurizing force applied from the pressurizing part to the end face pressing upper press die.   
     
     
         2 . The sheet material processing apparatus according to  claim 1 , characterized in that:
 the end face pressing lower press die is divided into a plurality of press dies that are able to press the end face of the sheet material against the end face pressing upper press die; and   the divided press dies are configured to be selectively used when pressing the end face of the sheet material.   
     
     
         3 . The sheet material processing apparatus according to  claim 2 , characterized in that
 each of the press dies is configured to be moved in a direction intersecting with a direction in which the end face pressing upper press die is driven toward the end face pressing lower press die, to realize the selective use.   
     
     
         4 . The sheet material processing apparatus according to  claim 3 , characterized in that
 the end face pressing width adjusting part includes at least one of the press dies that is moved and positioned by a back gauge of the processing apparatus in the intersecting direction and a stopper that is arranged on the one press die and the sheet material is brought into contact with.   
     
     
         5 . The sheet material processing apparatus according to  claim 1 , characterized in that the apparatus comprises a hemming part to hem the sheet material. 
     
     
         6 . The sheet material processing apparatus according to  claim 5 , characterized in that
 the hemming part is configured with the end face pressing part.   
     
     
         7 . The sheet material processing apparatus according to  claim 1 , characterized in that the apparatus comprises:
 a driver generating the pressurizing force of the pressurizing part; and   a bending part integrally supported with the end face pressing part and having a punch-side member that presses the sheet material with a punch under the pressurizing force of the pressurizing part and a die-side member having a die on the supporting part that supports the sheet material pressed with the punch, the bending part bending the sheet material between the punch and the die.   
     
     
         8 . The sheet material processing apparatus according to  claim 7 , characterized in that
 the plurality of divided press dies of the end face pressing lower press die include fixed dies having a fixed height position and movable dies arranged adjacent to the fixed dies and having height positions to be changed with respect to the height position of the fixed dies, the movable dies being provided with a height adjusting mechanism to change the height positions of the movable dies.   
     
     
         9 . The sheet material processing apparatus according to  claim 7 , characterized in that the apparatus comprises
 a pressing width adjusting mechanism adjusting a pressing width of the sheet material from the one end face of the sheet material,   the pressing width adjusting mechanism including an end face stopper bar that is arranged to appear and disappear from the end face pressing lower press die and is inserted between the die-side member and the end face pressing lower press die so that the one end face of the sheet material set on the end face pressing lower press die comes into contact with the stopper bar and a mover that moves the end face pressing lower press die together with the stopper bar in a direction intersecting with the direction in which the punch presses the die.   
     
     
         10 . The sheet material processing apparatus according to  claim 7 , characterized in that
 the die-side member is moved by a bending force of the driver toward the end face pressing lower press die to press the one end face of the sheet material against the end face pressing lower press die.   
     
     
         11 . The sheet material processing apparatus according to  claim 7 , characterized in that
 the die-side member includes a lower table and a die holder to support the die on the lower table, the lower table has the end face pressing upper press die, and the lower table is movable toward the end face pressing lower press die when the driver presses the punch toward the die, thereby pressing the one end face of the sheet material against the end face pressing lower press die.   
     
     
         12 . The sheet material processing apparatus according to  claim 8 , characterized in that
 the height adjusting mechanism moves the movable dies toward or away from the die-side member, thereby adjusting the height positions of the movable dies.   
     
     
         13 . The sheet material processing apparatus according to  claim 7 , characterized in that the apparatus comprises a hemming part to hem the sheet material. 
     
     
         14 . The sheet material processing apparatus according to  claim 13 , characterized in that
 the hemming part is configured with the end face pressing part.   
     
     
         15 . A press die installed on and used by a processing apparatus that employs a punch, a die, and a pressurizing part to bend a sheet material, characterized in that the press die comprises:
 an end face pressing upper press die that receives a pressurizing force from the pressurizing part that drives the punch toward the die;   an end face pressing lower press die that is arranged to face the end face pressing upper press die so that an end face of the sheet material is inserted between the end face pressing upper and lower press dies;   an end face pressing part that, with the pressurizing force from the pressurizing part moving the end face pressing upper press die toward the end face pressing lower press die, presses one end face of the sheet material along a bend line of the sheet material to be bent; and   an end face pressing width adjusting part that sets a pressing width of the one end face of the sheet material so that, when the end face pressing part presses the one end face, a contact face of the one end face of the sheet material comes in front of, in a direction in which the sheet material is inserted between the end face pressing upper and lower press dies, a pressurizing center of the pressurizing force applied from the pressurizing part to the end face pressing upper press die.   
     
     
         16 . The press die according to  claim 15 , characterized in that
 the end face pressing lower press die is divided into a plurality of press dies in a direction of the bend line of the sheet material to be bent, the divided press dies being configured to be selectively used when pressing the end face extending along the bend line of the sheet material.   
     
     
         17 . The press die according to  claim 16 , characterized in that
 each of the press dies is configured to be moved in a direction intersecting with a direction in which the pressurizing part drives the punch toward the die, to realize the selective use.   
     
     
         18 . The press die according to  claim 17 , characterized in that:
 some of the press dies are configured to be moved and positioned by a back gauge of the processing apparatus in the intersecting direction; and   the press dies to be moved and positioned by the back gauge in the intersecting direction are each provided with a stopper which the sheet material is brought into contact with.   
     
     
         19 . The press die according to  claim 15 , characterized in that the press die comprises a hemming part to hem the sheet material. 
     
     
         20 . The press die according to  claim 19 , characterized in that
 the hemming part is configured with the end face pressing part.   
     
     
         21 . A die setting body installed on and used by a processing apparatus that employs a punch and a die to bend a sheet material, characterized in that the die setting body comprises:
 a die setting part on which the die is set; and   an end face pressing part that presses an end face area of the sheet material along a bend line along which the sheet material is bent by the punch and the die set on the die setting part,   the end face pressing part being positioned opposite to an apparatus base of the processing apparatus with a pressurizing center of the punch and die being interposed between the end face pressing part and the apparatus base.   
     
     
         22 . The die setting body according to  claim 21 , characterized in that
 the end face pressing part is divided into a plurality of press dies in a direction of the bend line of the sheet material to be bent, the divided press dies being configured to be selectively used when pressing the end face area extending along the bend line of the sheet material.   
     
     
         23 . The die setting body according to  claim 22 , characterized in that
 the selective use of the divided press dies is realized by configuring each of the press dies to be moved in a direction intersecting with a direction in which the punch is driven toward the die set on the die setting body to bend the sheet material between the punch and the die.   
     
     
         24 . The die setting body according to  claim 23 , characterized in that:
 some of the press dies are configured to be moved and positioned by a back gauge of the processing apparatus in the intersecting direction; and   the press dies to be moved and positioned by the back gauge in the intersecting direction are each provided with a stopper which the sheet material is brought into contact with.   
     
     
         25 . The die setting body according to  claim 21 , characterized in that the die setting body comprises a hemming part to hem the sheet material. 
     
     
         26 . The die setting body according to  claim 25 , characterized in that
 the hemming part is configured with the end face pressing part.