A sheet folding device is provided, the device comprising a body and a folding assembly, the folding assembly having a changeable folding end. A sheet folding kit is also provided, the kit comprising a sheet folding mechanism comprising a fixing body and a folding mechanism, two or more folding ends, and two or more folding blocks. A method of folding a sheet is further provided, the method comprising selecting a folding end of a folding assembly based on the fixing profile and the desired seam.

A swivel bending machine has, in front of a front side of a workpiece holding unit, a support table for workpieces to be bent. A workpiece manipulator picks up workpieces to be bent from at least one table end region and takes the workpieces, in parallel with the longitudinal direction of a bending beam, to a portion in the longitudinal center of the workpiece holding unit. The workpiece manipulator has a first pair of clamping tongs and, spaced apart from the first pair in the longitudinal direction of the bending beam, a second pair of clamping tongs for clamping a workpiece. At least one pair of clamping tongs has a first stop surface for referencing workpiece positioning in relation to the longitudinal direction of the bending beam and a second stop surface for referencing positioning of this workpiece in relation to a depth direction of the swivel bending machine.

A swivel bending machine has, in front of a front side of a workpiece holding unit, a support table for workpieces to be bent. A workpiece manipulator picks up workpieces to be bent from at least one table end region and takes the workpieces, in parallel with the longitudinal direction of a bending beam, to a portion in the longitudinal center of the workpiece holding unit. The workpiece manipulator has a first pair of clamping tongs and, spaced apart from the first pair in the longitudinal direction of the bending beam, a second pair of clamping tongs for clamping a workpiece. At least one pair of clamping tongs has a first stop surface for referencing workpiece positioning in relation to the longitudinal direction of the bending beam and a second stop surface for referencing positioning of this workpiece in relation to a depth direction of the swivel bending machine.

An apparatus for making a Z-shaped profile on a sheet metal part having a first mould element acting as punch, a second mould element acting as die and a third mould element acting as sheet pressing element is provided. The second and third moulds element have respective flat clamping surfaces extending parallel to each other and are movable between an open position which allows insertion of the sheet metal part, and a closed position, in which the clamping surfaces are in contact with opposite sides of the sheet metal part. The first mould element is movable by translation along a working direction inclined to a direction perpendicular to the clamping surfaces towards a final working position in which the first mould element presses the sheet metal part against the second mould element.

An apparatus for making a Z-shaped profile on a sheet metal part having a first mould element acting as punch, a second mould element acting as die and a third mould element acting as sheet pressing element is provided. The second and third moulds element have respective flat clamping surfaces extending parallel to each other and are movable between an open position which allows insertion of the sheet metal part, and a closed position, in which the clamping surfaces are in contact with opposite sides of the sheet metal part. The first mould element is movable by translation along a working direction inclined to a direction perpendicular to the clamping surfaces towards a final working position in which the first mould element presses the sheet metal part against the second mould element.

A back gauge system is provided for actively adjusting position of a piece of sheet material in a sheet metal bending brake to a predetermined distance from a bending edge for performing a bend in accordance with a predetermined bending line. The back gauge system includes a frame connected to the sheet metal bending brake, a linear displacement assembly configured to move a stopper supporting the leading edge of the piece of sheet material, and a controlling system communicably connected to the linear displacement assembly to modify the position of the stopper along a traveling axis. A conversion kit assembly is also provided to retrofit an existing sheet metal bending brake not equipped with the back gauge system. The conversion kit comprises the back gauge system disclosed herein and optionally a cavity guide to support the sheet metal and prevent sagging thereof during operation of the back gauge system.

A folding machine for folding flat sheet metal material includes a series of bottom clamp heads and a series of top clamp heads are pivotally coupled to the bottom clamp heads. A bottom clamp is coupled to the bottom clamp heads, while a top clamp is coupled to the top claim heads. A bottom folding apron is mounted to the bottom clamp, while a top folding apron is mounted to the top clamp. A side loader assembly transfers sheet metal material into the folding machine for processing. A series of lifting tray assemblies reciprocate vertically between a raised position above the material working surface and a lowered position. Back gauges abut, grasp and hold the rearward edge of the sheet metal material when positioned upon the material working surface. The back gauges may move under the sheet metal material when the lifting assemblies are in their raised position.

A folding machine for folding flat sheet metal material includes a series of bottom clamp heads and a series of top clamp heads are pivotally coupled to the bottom clamp heads. A bottom clamp is coupled to the bottom clamp heads, while a top clamp is coupled to the top claim heads. A bottom folding apron is mounted to the bottom clamp, while a top folding apron is mounted to the top clamp. A side loader assembly transfers sheet metal material into the folding machine for processing. A series of lifting tray assemblies reciprocate vertically between a raised position above the material working surface and a lowered position. Back gauges abut, grasp and hold the rearward edge of the sheet metal material when positioned upon the material working surface. The back gauges may move under the sheet metal material when the lifting assemblies are in their raised position.

A manufacturing device of a secondary battery includes an upper fixing mold and a lower fixing mold fixing the electrode lead interposed therebetween, a lower molding mold disposed to be spaced apart from the lower fixing mold toward an outer end portion of the electrode lead, and a plurality of upper molding molds disposed to be spaced apart from the upper fixing mold toward an end portion of the electrode lead. The plurality of upper molding molds include a first upper molding mold for fixing the electrode leads and a second upper molding mold for forming first and second bent portions. The first upper molding mold and the second upper molding mold are separated from each other and are sequentially disposed in a direction from the electrode assembly toward the end portion of the electrode lead. A manufacturing method of a secondary battery is also provided.

A workpiece manipulation device for a swivel bending machine includes a base rack; a manipulation device carrier arranged on the base rack so as to be displaceable by a manipulation device carrier guide in a Y-axis relative to the base rack; a manipulation arm arranged on the manipulation device carrier so as to be displaceable by a manipulation arm guide in a Z-axis relative to the manipulation device carrier; a first rotary punch arranged on the manipulation arm, and a second rotary punch arranged on the manipulation device carrier. The manipulation device carrier is configured in an L-shape and has a first limb, which extends along a Y-axis, and a second limb, which extends along the Z-axis. The manipulation arm guide is formed on the second limb, and a distance between the manipulation arm guide and the rotational axis of the first rotary punch is greater than 1000 mm.