An apparatus and a process for forming an oval shaped duct, as well as a round duct for all required sizes and thicknesses for an AC system, in one continuous operation where two driving rolls advance a flat metal sheet to a multi-positioning bending roll, where the bending roll is moveable to a bending position for different curvatures and a non-bending position. The driving rolls advance the sheet through while the bending roll bends the sheet to form the curved sides, and the bending roll in the non-bending position form the flat sides of the oval shaped duct. A position sensor detects the position of the flat metal sheet in the rolls to control the location along the sheet where the bending roll is moved to either of the bending or non-bending positions while the driving rolls are stopped.

A wire nozzle outlet arrangement includes a plurality of wire nozzle outlets situated parallel to one another. The wire outlet nozzles each guide a winding wire in a wire feed direction, wherein the wire outlet nozzles include an outlet opening, through which the winding wire guided in the wire outlet nozzle exits the respective wire outlet nozzle. The wire outlet nozzle arrangement includes a repositioning device, which is designed to change the sequence of the wire outlet nozzles by repositioning the wire outlet nozzles.

A wire nozzle outlet arrangement includes a plurality of wire nozzle outlets situated parallel to one another. The wire outlet nozzles each guide a winding wire in a wire feed direction, wherein the wire outlet nozzles include an outlet opening, through which the winding wire guided in the wire outlet nozzle exits the respective wire outlet nozzle. The wire outlet nozzle arrangement includes a repositioning device, which is designed to change the sequence of the wire outlet nozzles by repositioning the wire outlet nozzles.

The present application relates to a stand (1) for rolling metal rods, wires or pipes along a rolling axis (19), which stand comprises a stand housing (10), the outside (12) of which, viewed along the rolling axis (19), comprises at least six side surfaces (14.1-14.6) that are arranged so as to be offset about the rolling axis, about a 60 rotation in each case, wherein in each case two side surfaces (14.1, 14.4, 14.2, 14.5, 14.3, 14.6) form a pair of side surfaces (14.1-14.6) that are located in parallel with one another. It further comprises three rollers (20.1-20.3) which are positioned on one roller shaft in each case, surround the rolling axis (19) in a star-shaped manner, and together form a caliber (21), and the radial position of which, based on the rolling axis (19), can be set for setting the caliber (21), and an adjustment connector (30) that is arranged on the outside (12) and is intended for introducing an adjustment torque for setting the caliber (21). In this case, the adjustment connector (30) comprises a gear shaft which is in parallel with a pair of the mutually parallel side surfaces.

The present application relates to a stand change carriage (10) for simultaneously receiving and transporting a plurality of stands (12) of a rolling mill (14) for rolling metal rods, wires or pipes, the stand change carriage (10) comprising a plurality of stand places (16), one of the stands (12) being receivable individually in each of the stand places (16), and the stand change carriage (10) comprising a lifting mechanism (18) which is designed to raise and lower each of the stands (12) individually.

The present application relates to a rolling mill (100) for rolling metal rods, wires or pipes along a rolling axis, wherein the rolling mill (100) comprises two or more stands (1) which are arranged one behind the other along the rolling axis and are in each case received in a stand base (70), wherein each of the stands (1) comprises three rollers (20.1, 20.2, 20.3) which are positioned on one roller shaft (22.1, 22.2, 22.3) in each case, surround the rolling axis in a star-shaped manner, and together form a caliber (21), wherein at least two of the three roller shafts (22.1, 22.2, 22.3) of each of the stands (1) are in each case operatively connected to a drive unit (80.1, 80.2, 80.3). The drive unit (80.1, 80.2, 80.3) comprises a motor (81.1, 81.2, 81.3) having a motor shaft, and a gearbox (82.1, 82.2, 82.3) having a Z-shaped gearbox housing (83.1, 83.2, 83.3) and having a drive shaft (84.1, 84.2, 84.3) which is coupled to the motor shaft, and having an output shaft (86.1, 86.2, 86.3) which is offset in parallel with the drive shaft (84.1, 84.2, 84.3) and which is coupled to the roller shaft (22.1, 22.2, 22.3). The drive units (80.1, 80.2, 80.3) are configured in a first and in a second configuration, wherein a part of the drive shaft (80.1, 80.2, 80.3) protruding out of the gearbox housing (83.1, 83.2, 83.3), and a part of the output shaft (86.1, 86.2, 86.3) protruding out of the gearbox housing (83.1, 83.2, 83.3), are in each case arranged so as to overlap axially with or so as to be axially free of overlap with respect to a part of the gearbox housing (83.1, 83.2, 83.3).

The present application relates to a stand base (10) for two or more stands (14) of a rolling mill arranged one behind the other in a rolling direction (W) of a material to be rolled, the stand base (10) comprising two or more receiving modules (12) arranged one behind the other, which are fastened to a common lower base frame (32) and a common upper cover frame (34).

The present application relates to a stand (1) for rolling metal rods, wires or pipes along a rolling axis (19), said stand comprising a stand housing (10), the outside of which, viewed along the rolling axis (19), comprises at least six side surfaces (14.1-14.6) that are of equal length and are arranged in a rotationally symmetrical manner about the rolling axis, wherein in each case two side surfaces (14.1, 14.4, 14.2, 14.5, 14.3, 14.6) form a pair of side surfaces (14.1-14.6) that are located in parallel with one another, and three rollers (20.1-20.3) which are positioned on one roller shaft in each case, surround the rolling axis (19) in a star-shaped manner, and together form a caliber (21). The three roller shafts are mounted by means of eccentric bushings in bearing holes of the stand housing (10) in such a way that a radial spacing of the rollers (20.1-20.3) from the rolling axis (19) is adjustable.

The present application relates to a stand base (10) for two or more stands (14) of a rolling mill arranged one behind the other in a rolling direction (W) of a material to be rolled, the stand base (10) comprising two or more receiving modules (12) arranged one behind the other, which are fastened to a common lower base frame (32) and a common upper cover frame (34).

The invention relates to a stand change carriage (10) for simultaneously receiving and transporting a plurality of stands of a rolling mill for rolling metal rods, wires or pipes, the stand change carriage (10) comprising a plurality of stand places (16), one of the stands being receivable individually in each of the stand places (16), the stand change carriage (10) comprising a plurality of steerable wheels (20), in order to transport the stands on rails or along a rail-less mill floor, and the stand change carriage comprising at least one hydraulic motor (21) which is operatively connected to at least one of the wheels (20) in order to drive it.