A coiled material transporting device is disposed between a coiled material supply device supplying a coiled material, and a press device pressing the coiled material supplied from the coiled material supply device. The coiled material supply device includes a support, a first driver, and a transporter. The support is extendable and retractable along a direction of a die disposed in the press device. The support is configured to support from below a terminal end of the coiled material supplied from the coiled material supply device. The first driver is configured to cause the support to extend and retract. The transporter is provided to the support and is configured to transport the terminal end of the coiled material toward the die disposed in the press device.

A roll feed includes a base body, a first tube roll having a rolling surface and a first bearing shaft, wherein the base body is configured to support the first tube roll and the first bearing shaft. The first bearing shaft and the first tube roll are configured to be detachably connected to each other for a rotationally fixed connection, wherein the base body is configured such that the first tube roll can be removed from the base body in an axial direction, wherein the axial direction is substantially parallel to an axis of rotation of the first tube roll.

A sheet material feeding apparatus includes a first roll 106, and a second roll 108 arranged vertically below first roll 106, to feed a sheet material clamped between the first roll 106 and the second roll 108. The sheet material feeding apparatus further includes a first motor 102 provided with a rotatable first motor shaft 104 coupled to the first roll 106, and a second motor 103 provided with a rotatable second motor shaft 105 coupled to the second roll 108. The first motor shaft 104 and the second motor shaft 105 rotate at substantially the same rotation speed to allow the first roll 106 and the second roll 108 to rotate in synchronization with each other.

A sheet material feeding apparatus includes a first roll 106, and a second roll 108 arranged vertically below first roll 106, to feed a sheet material clamped between the first roll 106 and the second roll 108. The sheet material feeding apparatus further includes a first motor 102 provided with a rotatable first motor shaft 104 coupled to the first roll 106, and a second motor 103 provided with a rotatable second motor shaft 105 coupled to the second roll 108. The first motor shaft 104 and the second motor shaft 105 rotate at substantially the same rotation speed to allow the first roll 106 and the second roll 108 to rotate in synchronization with each other.

A plate-like material feeding device configured to convey a plate-like material by sandwiching the plate-like material between a lower roll and an upper roll performs switching between a clamping state in which at least one of the upper roll or the lower roll is brought close to another one and a releasing state in which the at least one of the upper and lower rolls is separated away from another one by moving a cam follower in accordance with an outer peripheral profile of a circular cam. The outer peripheral profile of the circular cam has a projecting portion in a range different from a rotation angle range of the circular cam during operation, and has a recessed portion, which is formed in a vicinity of the top of the projecting portion and is configured to receive a part of an outer periphery of the cam follower.

A plate-like material feeding device configured to convey a plate-like material by sandwiching the plate-like material between a lower roll and an upper roll performs switching between a clamping state in which at least one of the upper roll or the lower roll is brought close to another one and a releasing state in which the at least one of the upper and lower rolls is separated away from another one by moving a cam follower in accordance with an outer peripheral profile of a circular cam. The outer peripheral profile of the circular cam has a projecting portion in a range different from a rotation angle range of the circular cam during operation, and has a recessed portion, which is formed in a vicinity of the top of the projecting portion and is configured to receive a part of an outer periphery of the cam follower.

A method for deriving the position of a pushing roll, applied even when there is a difference between the actual processed shape and a theoretical solution (a numerical analysis solution) due to changes in a state of a processing machine or the bending characteristic of the material to be processed. The rolls have a pyramid-like shape, and the operation amount of a pushing roll is changed while continuously feeding a material, thereby bending the material. Also, for each position of the fixed pushing roll, the radius of curvature of the material is measured and the bending characteristic is grasped in advance. From the design shape, the radius of curvature and the operation amount for bringing the pushing roll into contact are obtained. The operation amount of the pushing roll is then determined.

A roll type material feeding apparatus for intermittently feeding a workpiece such as a strip-like sheet material, to a stamping machine or similar machine. The apparatus includes a frame, a first driven feed roll, a second feed roll, a first drive motor arranged to rotate in driving engagement with the first driven feed roll, a first rotary position sensor arranged to rotate in driving engagement with the first drive motor, and a second drive motor.

A roll type material feeding apparatus for intermittently feeding a workpiece such as a strip-like sheet material, to a stamping machine or similar machine. The apparatus includes a frame, a first driven feed roll, a second feed roll, a first drive motor arranged to rotate in driving engagement with the first driven feed roll, a first rotary position sensor arranged to rotate in driving engagement with the first drive motor, and a second drive motor.

A sheet material feeding apparatus includes a first roll 106, and a second roll 108 arranged vertically below first roll 106, to feed a sheet material clamped between the first roll 106 and the second roll 108. The sheet material feeding apparatus further includes a first motor 102 provided with a rotatable first motor shaft 104 coupled to the first roll 106, and a second motor 103 provided with a rotatable second motor shaft 105 coupled to the second roll 108. The first motor shaft 104 and the second motor shaft 105 rotate at substantially the same rotation speed to allow the first roll 106 and the second roll 108 to rotate in synchronization with each other.