A die cutter including: a moving platen and a fixed platen; a moving mechanism structured to cause the moving platen to vertically move toward the fixed platen; and a controller structured to control the moving mechanism, wherein the die cutter punches a sheet material with a punching die attached to the fixed platen by bringing the moving platen closer to the fixed platen using the moving mechanism, and the moving mechanism includes: four lift transmission mechanisms structured to pressurize the moving platen upwardly with four pressurizers having different positions in a horizontal direction from one another; and four press motors structured to drive the lift transmission mechanisms, respectively.

A press drive device includes a connecting rod with input and output ends. A drive shaft mounts to rotate about a shaft axis and includes a connecting rod bearing in eccentric relation to the shaft axis. The input end mounts on the connecting rod bearing. At least first and second drive housings are provided on axially opposite sides of the connecting rod bearing. The drive shaft projects into both drive housings. A motor mounts in at least one of the drive housings and includes a stator rotationally fixed to a drive housing peripheral wall located coaxially around the shaft axis. A rotor supported by a rotor hub is arranged radially within the stator with mounting space between the shaft axis and the rotor for possibly mounting a braking device.

A press drive device includes a connecting rod with input and output ends. A drive shaft mounts to rotate about a shaft axis and includes a connecting rod bearing in eccentric relation to the shaft axis. The input end mounts on the connecting rod bearing. At least first and second drive housings are provided on axially opposite sides of the connecting rod bearing. The drive shaft projects into both drive housings. A motor mounts in at least one of the drive housings and includes a stator rotationally fixed to a drive housing peripheral wall located coaxially around the shaft axis. A rotor supported by a rotor hub is arranged radially within the stator with mounting space between the shaft axis and the rotor for possibly mounting a braking device.

A press drive device (21) includes a connecting rod (49) with input (48) and output ends (50). A drive shaft (35) is mounted to be rotatable about a shaft axis W and includes a connecting rod bearing (46) that is eccentric in relation to the shaft axis W. A drive unit (77) includes a driving motor (30) and a planetary gear set (76) to drive the drive shaft (35). A gear output (79) connects to the drive shaft (35), and a gear input (78) connects to a motor shaft (73). The driving motor (30) includes a rotor (66) connected in a rotationally fixed manner to the motor shaft (73) via a rotor hub (67). The rotor (66) is concentric to the motor shaft creating mounting space between the motor shaft (73) and the rotor (66) and designed to arrange a braking device (31) therein.

A press drive device (21) includes a connecting rod (49) with input (48) and output ends (50). A drive shaft (35) is mounted to be rotatable about a shaft axis W and includes a connecting rod bearing (46) that is eccentric in relation to the shaft axis W. A drive unit (77) includes a driving motor (30) and a planetary gear set (76) to drive the drive shaft (35). A gear output (79) connects to the drive shaft (35), and a gear input (78) connects to a motor shaft (73). The driving motor (30) includes a rotor (66) connected in a rotationally fixed manner to the motor shaft (73) via a rotor hub (67). The rotor (66) is concentric to the motor shaft creating mounting space between the motor shaft (73) and the rotor (66) and designed to arrange a braking device (31) therein.

The invention relates to a press drive for a press or a press having a press drive. The invention also relates to a method for controlling the press drive by means of a control unit. The press drive is used for moving a ram of the press in a stroke direction H between an upper return point OT and a lower return point UT. It comprises a knee lever gear having a first lever and a second lever. A connecting rod engages on the knee lever of the two levers and is connected on the other end to an eccentric of an eccentric drive. The control unit can drive the eccentric drive in a first operating mode B1 or a second operating mode B2 or, in particular, also a third operating mode B3. In the first and the second operating modes B1, B2, the eccentric oscillates in a respectively different angle region W1, W2 about a rotation axis D of the eccentric drive, thus resulting in different force and movement states of the ram in both operating modes.

The invention relates to a press drive for a press or a press having a press drive. The invention also relates to a method for controlling the press drive by means of a control unit. The press drive is used for moving a ram of the press in a stroke direction H between an upper return point OT and a lower return point UT. It comprises a knee lever gear having a first lever and a second lever. A connecting rod engages on the knee lever of the two levers and is connected on the other end to an eccentric of an eccentric drive. The control unit can drive the eccentric drive in a first operating mode B1 or a second operating mode B2 or, in particular, also a third operating mode B3. In the first and the second operating modes B1, B2, the eccentric oscillates in a respectively different angle region W1, W2 about a rotation axis D of the eccentric drive, thus resulting in different force and movement states of the ram in both operating modes.

The invention relates to a press drive for a press or a press having a press drive. The invention also relates to a method for controlling the press drive by means of a control unit. The press drive is used for moving a ram of the press in a stroke direction H between an upper return point OT and a lower return point UT. It comprises a knee lever gear having a first lever and a second lever. A connecting rod engages on the knee lever of the two levers and is connected on the other end to an eccentric of an eccentric drive. The control unit can drive the eccentric drive in a first operating mode B1 or a second operating mode B2 or, in particular, also a third operating mode B3. In the first and the second operating modes B1, B2, the eccentric oscillates in a respectively different angle region W1, W2 about a rotation axis D of the eccentric drive, thus resulting in different force and movement states of the ram in both operating modes.

The invention relates to a press drive for a press or a press having a press drive. The invention also relates to a method for controlling the press drive by means of a control unit. The press drive is used for moving a ram of the press in a stroke direction H between an upper return point OT and a lower return point UT. It comprises a knee lever gear having a first lever and a second lever. A connecting rod engages on the knee lever of the two levers and is connected on the other end to an eccentric of an eccentric drive. The control unit can drive the eccentric drive in a first operating mode B1 or a second operating mode B2 or, in particular, also a third operating mode B3. In the first and the second operating modes B1, B2, the eccentric oscillates in a respectively different angle region W1, W2 about a rotation axis D of the eccentric drive, thus resulting in different force and movement states of the ram in both operating modes.

A toolpack for a can bodymaker with a vertically oriented, reciprocating, elongated ram assembly is provided. The toolpack includes a tool pack housing assembly, a number of die spacers, a number of dies, and a compression device. The tool pack housing assembly defines a passage and includes an inner surface, an upper sidewall, a lower sidewall, a first lateral sidewall, a second lateral sidewall, a rear sidewall, and a door. The tool pack housing assembly passage extends generally vertically. Each die spacer structured to support a die and defining a central passage. Each die including a body defining a central passage. The die spacers and dies are disposed in said tool pack housing assembly. The compression device is disposed at said tool pack housing assembly lower sidewall and is structured to axially bias said number of die spacers.