Lower tool device for press brake

A lower tool holding device for a press brake, the press brake being equipped with upper and lower tools for cooperating with each other to effect bending in a workpiece placed therebetween, the device comprising:

• a plurality of tool holder blocks adapted to be mounted on a lower table of a press brake, adjacent tool holders being formed with a T-shaped slot therebetween for receiving a flange member coupled to the lower tool,
• a push member attached to the tool holder block, for clamping the flange member inserted into the T-shaped slot, the push member including a bell crank pivotally attached to the tool holder block;
• and
• a push urging device for urging the push member so as to clamp the flange member, said push urging device including:
• a screw rod having an axial direction and formed with a first threaded portion engaged with the tool holder block, so that the screw rod is moved in a longitudinal direction of the tool holder block when rotated,
• a sleeve supported by the screw rod so as to be movable in the axial direction of the screw rod, and brought into contact with the bell crank, and
• an elastic member supported by the screw rod to urge the sleeve toward the bell crank.

A lower tool holding device for a press brake, the press brake being equipped with upper and lower tools for cooperating with each other to effect bending in a workpiece placed therebetween, the device comprising:

• a plurality of tool holder blocks adapted to be mounted on a lower table of a press brake, each block being formed with a T-shaped slot for receiving a flange member coupled to the lower tool,
• a plurality of push members each attached to each tool holder block, for clamping the flange member inserted into the T-shaped slot;
• a plurality of screw rods each rotatably attached to each tool holder block, for acting on the push member attached to the tool holder block;
• and
• wherein each screw rod is provided, at a first end, with a tool attachment section adapted to be engaged with a tool for turning the screw rod, and at a second end, a coupling section of a screw rod of an adjacent tool holder block.

A lower tool holding device for a press brake, the press brake being equipped with upper and lower tools for cooperating with each other to effect bending in a workpiece placed therebetween, the device comprising:

• a plurality of tool holder blocks adapted to be mounted on a lower table of a press brake, adjacent blocks being formed with a T-shaped slot therebetween for receiving a flange member coupled to the lower tool,
• a plurality of push members each attached to each tool holder block, for clamping the flange member inserted into the T-shaped slot;
• a plurality of screw rods each rotatably attached to each tool holder block, for acting on the push member attached to the tool holder block;
• and
• wherein each screw rod is provided, at a first end, with a tool attachment section adapted to be engaged with a tool for turning the screw rod, and at a second end, a coupling section adapted to be coupled with a tool attachment section of a screw rod of an adjacent tool holder block.