Braiding or stranding machine having a rotor yoke and transport device

Abstract

A braiding or stranding machine for the braiding or the stranding of a strand shaped material 2 comprises a rotor yoke curved radially outward and rotatably around an axis of rotation, the two ends of which lie on or near the axis of rotation and the strand shaped material 2 is moved along the longitudinal direction thereof during operation of the braiding or stranding machine. The rotor yoke comprises a transport device 1 for the strand shaped material 2, which is provided to contact the strand shaped material 2 on only one part of the longitudinal extension of the rotor yoke and to move at the contact surface with the strand shaped material 2 in the same direction as that of the strand shaped material 2. According to the invention, the transport device 1 is adapted to contact the strand shaped material 2 only on a part of the longitudinal extension of the rotor yoke. In this way, the contact surface between the transport device 1 and the strand shaped material 2, and thus the extension of the transport device 1 itself, can be reduced, by which means the aerodynamic drag of the transport device 1 also decreases.

1 . A braiding or stranding machine for a braiding or a stranding of a strand shaped material, comprising a rotor yoke being rotatable around a rotation axis and curved radially outward whose both ends lie on or near the rotation axis and move along a longitudinal direction of the strand shaped material during an operation of the braiding or stranding machine, wherein the rotor yoke has a transport device for the strand shaped material, wherein the transport device is adapted to contact the strand shaped material and to move at a contact surface with the strand shaped material in the same direction as the strand shaped material,
 wherein   the transport device is adapted to contact the strand shaped material only on a part of the longitudinal extension of the rotor yoke.   
     
     
         2 . The braiding or stranding machine according to  claim 1 , wherein the transport device is adapted to contact the strand shaped material at least in a second half of the rotor yoke continuously, wherein the second half is seen in the direction of the movement of the strand shaped material. 
     
     
         3 . The braiding or stranding machine according to  claim 1 , wherein the transport device is adapted to contact the strand shaped material at 20% to 80% of the longitudinal extension of the rotor yoke. 
     
     
         4 . The braiding or stranding machine according to  claim 1 , wherein the transport device is adapted to contact the strand shaped material at 30% to 70% of the longitudinal extension of the rotor yoke. 
     
     
         5 . The braiding or stranding machine according to  claim 1 , wherein the transport device is adapted to contact the strand shaped material 40% to 60% of the longitudinal extension of the rotor yoke. 
     
     
         6 . The braiding or stranding machine according to  claim 1 , wherein the transport device is adapted to contact the strand shaped material only on one side, in particular on a radially outer side of the strand shaped material. 
     
     
         7 . The braiding or stranding machine according to  claim 1 , wherein the transport device is adapted to contact the strand shaped material on at least two sides, in particular on a radially outer side and on a radially inner side of the strand shaped material. 
     
     
         8 . The braiding or stranding machine according to  claim 1 , wherein transport device is adapted to move parts of the transport device which are provided for the contacting of the strand shaped material during the operation of the braiding or stranding machine with substantially the same speed as the strand shaped material. 
     
     
         9 . The braiding or stranding machine according to  claim 1 , wherein the transport device is a belt conveyor. 
     
     
         10 . The braiding or stranding machine according to  claim 1 , wherein the rotor yoke is arranged at the transport device in a closed space, which is filled with a medium having a lower density than the density of ambient air. 
     
     
         11 . The braiding or stranding machine according to  claim 1 , wherein the rotor yoke in a part of its longitudinal extension in which the transport device is not adapted to contact the strand shaped material, preferably only in this part of the rotor yoke comprises a friction reducing coating or lining and/or wear reducing coating or lining, in particular a carbon containing layer such as a diamond-like carbon coating.