A stock lifter for metal forming dies includes a self-contained assembly. The assembly includes a guide pin that reciprocates within a base. A hardened end cap, which contacts the stock, is attached to the guide pin. A spring is located on the exterior surface of a portion of the base and surrounds the guide pin body. One end of the spring contacts a surface on the cap, while the other end of the spring contacts a surface on the base or an optional mounting flange that is attached above the base. Thus, the stock lifter assembly has a hardened cap for the stock to slide on and a larger, externally mounted spring that provides longer life for the stock lifter. The stock lifter assembly can be made of several different lengths and sizes by using longer or wider guide pins and springs.

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.

A forming system includes: a forming apparatus which supplies gas into a cylindrical metal pipe material having a welded portion to expand the metal pipe material; a supply device for supplying the metal pipe material to the forming apparatus; and a control device for controlling an operation of the supply device, in which in a case where a position where a distance from a center of the metal pipe material is the longest, on a surface of the die, when viewed from an extension direction of the metal pipe material in a state where the metal pipe material is disposed between the dies, is a longest position, the control device includes a control unit which controls supply of the metal pipe material to the forming apparatus such that the welded portion is not located on a straight line connecting the longest position and the center of the metal pipe material.

Disclosed is a vertical strip accumulator. The vertical strip accumulator includes an inner drum unit having an inner drum; an outer drum unit installed at an outer side of the inner drum unit; a central drum unit installed at an inner side of the inner drum unit; and an input unit configured to carry a skelp supplied from an uncoiler to the outer drum unit. The outer drum unit includes an outer drum configured to selectively rotate forward and reverse; a first power source configured to provide a power to the outer drum; an outer roller installed to the outer drum; and a first control unit connected to the first power source to control the operation of the first power source. The input unit includes a carrying roller provided in contact with the skelp; a second power source configured to supply a power to the carrying roller; and a second control unit connected to the second power source to control the operation of the second power source.

Disclosed is a vertical strip accumulator. The vertical strip accumulator includes an inner drum unit having an inner drum; an outer drum unit installed at an outer side of the inner drum unit; a central drum unit installed at an inner side of the inner drum unit; and an input unit configured to carry a skelp supplied from an uncoiler to the outer drum unit. The outer drum unit includes an outer drum configured to selectively rotate forward and reverse; a first power source configured to provide a power to the outer drum; an outer roller installed to the outer drum; and a first control unit connected to the first power source to control the operation of the first power source. The input unit includes a carrying roller provided in contact with the skelp; a second power source configured to supply a power to the carrying roller; and a second control unit connected to the second power source to control the operation of the second power source.

A rotary stamper includes an upper die plate assembly, a lower die plate assembly, and a support frame having a drive assembly that moves the upper die plate horizontally and vertically along a generally circular pathway while moving the lower die plate along a linear horizontal pathway. The upper die plate is vertically slidably connected to the lower die plate by way of one or more vertical rods that extend from the lower die plate assembly up through the upper die plate. In operation, the lower die plate matches the horizontal movements of the upper die plate as the latter is moved along its circular pathway. Concurrently, the upper die plate moves towards and away from the lower die plate. This maintains a substantially constant alignment between the die plates for carrying out a periodic machining operation on a moving web of material passing there between.

Provided is a control device for a plate feeding device with which the amount of a plate transported to a processing device by the plate feeding device can be measured with high accuracy. This control device for a plate feeding device includes: a control unit that controls the rotation of a first roll and a second roll of the plate feeding device; a transmission unit that transmits an electromagnetic wave toward a plate; and a transmission unit that transmits the electromagnetic wave toward the plate, wherein the control unit measures the transport speed of the plate during a predetermined period on the basis of the frequency of the electromagnetic wave received by the reception unit, and measures the transport amount of the plate on the basis of the transport speed.

Provided is a control device for a plate feeding device with which the amount of a plate transported to a processing device by the plate feeding device can be measured with high accuracy. This control device for a plate feeding device includes: a control unit that controls the rotation of a first roll and a second roll of the plate feeding device; a transmission unit that transmits an electromagnetic wave toward a plate; and a transmission unit that transmits the electromagnetic wave toward the plate, wherein the control unit measures the transport speed of the plate during a predetermined period on the basis of the frequency of the electromagnetic wave received by the reception unit, and measures the transport amount of the plate on the basis of the transport speed.

The present invention relates to a perforating press for perforating sheet material comprising a feeding means for feeding sheet material in a first direction; at least one punch holder, wherein the punch holder extends in a second direction transverse to the first direction, and wherein the punch holder comprises at least one punch; a die, wherein the die comprises openings for receiving punches of the punch holder a transmission shaft for linear displacement of the punch holder in a stroke direction transverse to the first and second directions; and a discharge means for discharging perforated sheet material; wherein the perforating press comprises a sheet holder, wherein the sheet holder is positioned between the punch holder and the die according to the stroke direction, wherein the sheet holder is movable according to the stroke direction by the transmission shaft, and wherein the sheet holder comprises cut-outs for passage of punches of the punch holder. The invention also relates to a method and a use.

The present invention relates to a perforating press for perforating sheet material comprising a feeding means for feeding sheet material in a first direction; at least one punch holder, wherein the punch holder extends in a second direction transverse to the first direction, and wherein the punch holder comprises at least one punch; a die, wherein the die comprises openings for receiving punches of the punch holder a transmission shaft for linear displacement of the punch holder in a stroke direction transverse to the first and second directions; and a discharge means for discharging perforated sheet material; wherein the perforating press comprises a sheet holder, wherein the sheet holder is positioned between the punch holder and the die according to the stroke direction, wherein the sheet holder is movable according to the stroke direction by the transmission shaft, and wherein the sheet holder comprises cut-outs for passage of punches of the punch holder. The invention also relates to a method and a use.