Provided is a workpiece conveying system configured to convey a sheet-like workpiece to a downstream step, including: a workpiece conveyor configured to lift through attraction holding, by a workpiece holding unit, an uppermost workpiece W of a stack, and convey the uppermost workpiece W of the stack to the downstream step one by one; and a conveyed workpiece number detector configured to detect the number of workpieces W held by the workpiece holding unit at a detection timing, at which the workpiece W held and raised by the workpiece holding unit in accordance with a normal workpiece conveying operation performed by the workpiece conveyor reaches an upper limit position of raising the workpiece W, and at which a moving speed component of the workpiece W in a raising direction is 0.

The present disclosure provides for a reversible and adjustable stopper assembly comprised of an upper frame, L-bracket, connector portion and stopping member. The stopper can be configured to be secured to at least two main types of press brakes. The stopping portion of the stopper is also reversible, allowing for less sheet metal to be inserted into the press brake, if desired. The stopper assembly can be slid in a horizontal manner, relative to the press brake to preserve the measurement of the sheet metal from one end of the press brake to the other.

The invention relates to a workpiece stop, a signal output device for outputting a signal directly perceivable to an operator of a workpiece processing machine from his/her working position, an imaging device for generating at least one image of the interior of a workpiece processing machine, a device for monitoring a processing position of a workpiece, a work-piece processing machine, a use of a device for monitoring a processing position of a work-piece, a use of a workpiece processing machine and a method for processing a workpiece in a workpiece processing machine. These devices and method promote safe and efficient operation of a workpiece processing machine.

The invention relates to a workpiece stop, a signal output device for outputting a signal directly perceivable to an operator of a workpiece processing machine from his/her working position, an imaging device for generating at least one image of the interior of a workpiece processing machine, a device for monitoring a processing position of a workpiece, a work-piece processing machine, a use of a device for monitoring a processing position of a work-piece, a use of a workpiece processing machine and a method for processing a workpiece in a workpiece processing machine. These devices and method promote safe and efficient operation of a workpiece processing machine.

The present disclosure provides for a reversible and adjustable stopper assembly comprised of an upper frame, L-bracket, connector portion and stopping member. The stopper can be configured to be secured to at least two main types of press brakes. The stopping portion of the stopper is also reversible, allowing for less sheet metal to be inserted into the press brake, if desired. The stopper assembly can be slid in a horizontal manner, relative to the press brake to preserve the measurement of the sheet metal from one end of the press brake to the other.

A forming apparatus which forms a metal pipe by expanding a metal pipe material, includes: a forming die for forming the metal pipe; a first electrode and a second electrode which clamp the metal pipe material at both end sides and heat the metal pipe material by causing an electric current to flow through the metal pipe material; and a first fluid supply unit and a second fluid supply unit which supply a fluid into the metal pipe material heated by the first electrode and the second electrode to expand the metal pipe material, wherein at least one of the first electrode and the second electrode is provided with a movement restriction mechanism which restricts a movement of the metal pipe material in an axial direction of the metal pipe material.

A centering system comprising a conveyor for receiving a plurality of blanks outputted from a furnace and displacing the blanks along a first horizontal axis and shifting units for each individual blank including two or more adjustable lifting bars, the shifting units configured to move along a second horizontal axis, and the adjustable lifting bars being configured to lift the blanks along a vertical axis, wherein each of the shifting units is independently movable along the second axis, and a plurality of centering pins for centering the blanks, such that the blanks can be centered by moving the individual blanks along the second axis against the centering pins. Also disclosed are conveyor systems and methods for centering and conveying blanks.

A centering system comprising a conveyor for receiving a plurality of blanks outputted from a furnace and displacing the blanks along a first horizontal axis and shifting units for each individual blank including two or more adjustable lifting bars, the shifting units configured to move along a second horizontal axis, and the adjustable lifting bars being configured to lift the blanks along a vertical axis, wherein each of the shifting units is independently movable along the second axis, and a plurality of centering pins for centering the blanks, such that the blanks can be centered by moving the individual blanks along the second axis against the centering pins. Also disclosed are conveyor systems and methods for centering and conveying blanks.

A press brake includes elevating members each provided to respective one of a pair of support blocks so as to be able to ascend and descend, and extending vertically. A ball screw is provided to a first elevating member so as to be rotatable, and a nut member to be screwed into the ball screw is provided to a first support block. One end side of a stretch in the lateral direction is connected to an upper end portion of the first elevating, and the other end side of the stretch in the lateral direction is connected, so as to be rotationally movable, to an upper end portion of a second elevating member. A support mechanism for supporting the stretch from below is provided to the first elevating member, and an abutting member is provided to the stretch.

A press brake includes elevating members each provided to respective one of a pair of support blocks so as to be able to ascend and descend, and extending vertically. A ball screw is provided to a first elevating member so as to be rotatable, and a nut member to be screwed into the ball screw is provided to a first support block. One end side of a stretch in the lateral direction is connected to an upper end portion of the first elevating, and the other end side of the stretch in the lateral direction is connected, so as to be rotationally movable, to an upper end portion of a second elevating member. A support mechanism for supporting the stretch from below is provided to the first elevating member, and an abutting member is provided to the stretch.