A system of pullers, in particular for extruding metals, said system comprising at least a first puller and a second puller, each equipped with gripping means adapted to engage and grip an end portion of a profile, in particular of an extruded profile exiting from an extrusion press, said system comprising a first guide and a second guide, where said at least two, first and second, pullers can be translated along said first and second guides, where said first guide is dedicated to the translation of both said at least two, first and second, pullers in a single first translation direction, and where said second guide is dedicated to the translation of both said at least two, first and second, pullers in a second translation direction opposite to said first translation direction.

A wire-drawing method comprises providing a rod comprising a wrapped sheet, wherein the sheet comprises a plurality of copper layers and a plurality of graphene layers; extracting an inner layer of the wrapped sheet from the rod to form a spiral; and forming a wire by feeding the spiral through an opening of a die unit.

A wire-drawing method comprises providing a rod comprising a wrapped sheet, wherein the sheet comprises a plurality of copper layers and a plurality of graphene layers; extracting an inner layer of the wrapped sheet from the rod to form a spiral; and forming a wire by feeding the spiral through an opening of a die unit.

A puller apparatus has a path through which an extrusion travels downstream from an outlet of an extruder and upper and lower extrusion puller members that define a portion of the path. At least one of the extrusion puller members is a drive member to provide forward motion to an extrusion. A mounting arm is moveably mounted to the puller apparatus at a mounting location. The mounting arm has a first portion on one side of the mounting location and a second portion on an opposed side of the mounting location. The upper extrusion puller member is mounted to the first portion of the mounting arm. The mounting arm is movable from a lowered position in which the upper extrusion puller member is positioned to engage an extrusion in the path and a raised position in which the upper extrusion puller member is spaced upwardly from the lowered position.

A drawing assembly for drawing machines for metal products (B) comprises two tracks (11) opposite each other and counter-rotating that collaborate with said metal products (B) on opposite sides with respect to a drawing axis (X) to draw them along said drawing axis (X) The tracks (11) are disposed in a closed ring around respective support plates (13), and an intermediate chain (15) is interposed between the track (11) and the corresponding support plate (13). Each support plate (13) includes at least two guide segments (18; 118), lateral, having a convex shape externally mating with the curve of the intermediate chain (15). The drawing assembly (10) comprises, for each intermediate chain (15), an automatic tensioning device (21) provided with at least one thruster member (22) acting on a respective one of the guide segments (18; 118) in order to exert constantly upon it a distancing thrust, to keep it constantly in contact with the corresponding intermediate chain (15).

A drawing assembly for drawing machines for metal products (B) comprises two tracks (11) opposite each other and counter-rotating that collaborate with said metal products (B) on opposite sides with respect to a drawing axis (X) to draw them along said drawing axis (X) The tracks (11) are disposed in a closed ring around respective support plates (13), and an intermediate chain (15) is interposed between the track (11) and the corresponding support plate (13). Each support plate (13) includes at least two guide segments (18; 118), lateral, having a convex shape externally mating with the curve of the intermediate chain (15). The drawing assembly (10) comprises, for each intermediate chain (15), an automatic tensioning device (21) provided with at least one thruster member (22) acting on a respective one of the guide segments (18; 118) in order to exert constantly upon it a distancing thrust, to keep it constantly in contact with the corresponding intermediate chain (15).

A drawing carriage for a drawing machine, comprising two clamping jaws (16) and a clamping jaw moving device for an opening and closing movement of the clamping jaws (16), is characterized in that the clamping jaw moving device comprises a linear motor (4). In the case of a drawing machine, comprising a drive unit for driving at least two drawing carriages (1), the drawing carriages (1) have a linear motor (4) for the clamping jaw moving device.

A drawing carriage for a drawing machine, comprising two clamping jaws (16) and a clamping jaw moving device for an opening and closing movement of the clamping jaws (16), is characterized in that the clamping jaw moving device comprises a linear motor (4). In the case of a drawing machine, comprising a drive unit for driving at least two drawing carriages (1), the drawing carriages (1) have a linear motor (4) for the clamping jaw moving device.

A draw bench has a draw bed (1), with a die block (2) defining a draw axis (11), with a draw carriage (3) movable along the draw bed (1) and aligned with respect to the draw axis (11), and with at least two racks (5) arranged fixedly on the draw bed (1) and extending in the direction of the draw axis (11), which racks mesh with drivable drive gears (7, 8) provided in the draw carriage (3). The toothing (6) of the racks (5) are provided on sides of the racks (5) facing towards or away from each other, the line of action of the resulting tangential components (Ft) of the tooth forces (F) coincides with the draw axis (11) and the torques caused by the radial components (Fr) of the tooth forces (F) in the region of the two racks (5) and acting on the draw carriage (3) in opposite directions cancel each other out.

A draw bench has a draw bed (1), with a die block (2) defining a draw axis (11), with a draw carriage (3) movable along the draw bed (1) and aligned with respect to the draw axis (11), and with at least two racks (5) arranged fixedly on the draw bed (1) and extending in the direction of the draw axis (11), which racks mesh with drivable drive gears (7, 8) provided in the draw carriage (3). The toothing (6) of the racks (5) are provided on sides of the racks (5) facing towards or away from each other, the line of action of the resulting tangential components (Ft) of the tooth forces (F) coincides with the draw axis (11) and the torques caused by the radial components (Fr) of the tooth forces (F) in the region of the two racks (5) and acting on the draw carriage (3) in opposite directions cancel each other out.