摘要:
Plant for annealing metal straps (4), which comprises a support structure (5) for one or more motors suitable for rotating at least three electrified rollers (1, 2, 3) in which the voltage of the second electrified roller (2) is higher or lower than the voltage of the first roller (1) and the third roller (3), so that a strap (4) passing around these electrified rollers (1, 2, 3) is crossed by an electric current and becomes hot due to the Joule effect, the diameter of the electrified rollers (1, 2, 3) being equal to the thickness of the strap (4) multiplied by a coefficient (k) greater than 200.
摘要:
Stranding machine comprising a first double twist device (1) provided with a first stationary support (3) in which a first bobbin (2) can rotate for winding a finished cable (5), as well as with a first arched structure (6) which can rotate around the first stationary support (3), so that the cable (5) undergoes a double twist before it is wound on the first bobbin (2), wherein a second double twist device (12) is arranged upstream the first double twist device (1) and is provided with a second stationary support (14) in which at least one second bobbin (13) can rotate for unwinding a bundle of wires (16) which will form said cable (5), as well as with a second arched structure (17) which can rotate around the second stationary support (14), so that the bundle of wires (16) coming from the second bobbin (13) undergoes a double twist before it reaches the first double twist device (1).
摘要:
Stranding machine comprising a base (1) on which an arc structure (2) can rotate around a stationary central structure (4) in which a bobbin (5) is rotated for winding a cable (6) pulled by one or more pulleys (7) and twisted with a double twist in the arc structure (2) during its rotation, said arc structure (2) comprising a pair of rotating guides (2a, 2b) mutually connected by an arc (2c) along which the cable (6) runs, characterized in that the first (2a) and/or the second (2b) rotating guide of the arc structure (2) are provided with a plurality of rollers (8) along which the cable (6) can run, said rollers (8) being mounted onto supports (9) suitable for being rotated around an axis substantially perpendicular to the rotation axis of the rollers (8) and to the portion of the cable (6) tangent thereto.
摘要:
Machine comprising a first support (1; 31; 38; 48; 53) for supporting a bobbin (2), wherein a rotor (5) can rotate around a main axis (3) for stranding wires (7) and winding or unwinding around the main axis (3) a strand (8) or the like comprising these wires (7), while the first support (1; 31; 38; 48; 53) can move along the main axis (3), which rotor (5) is provided with a second support (16; 32; 39; 49; 54) which rotates with the rotor (5) around the main axis (3) and can move along the main axis (3) for supporting the bobbin (2), wherein the first support (1; 31; 38; 48; 53) and/or the second support (16; 32; 39; 49; 54) rotate the bobbin (2) around the main axis (3) when the rotor (5) rotates around the main axis (3).
摘要:
Plant for annealing metal straps (4), which comprises a support structure (5) for one or more motors suitable for rotating at least three electrified rollers (1, 2, 3) in which the voltage of the second electrified roller (2) is higher or lower than the voltage of the first roller (1) and the third roller (3), so that a strap (4) passing around these electrified rollers (1, 2, 3) is crossed by an electric current and becomes hot due to the Joule effect, the diameter of the electrified rollers (1, 2, 3) being equal to the thickness of the strap (4) multiplied by a coefficient (k) greater than 200.
摘要:
Wire stranding machine to produce cables, metal wire ropes and other similar means, in which a plurality of metal wires are grouped together and twisted by means of a rotating structure comprising a supporting bow (6) forthe wires which rotates at high speed, while the cable thus formed is drawn and wound up on a collecting spool (9). The ends of said bow are secured on plates or clamps (5) suitably supported for rotation and each clamp (5) mounts at least one balancing mass, apt to compensate the centrifugal forces produced by the bow (6) while rotating.