Method for producing a cable

Abstract

It is a known practice to hammer cables for specific applications that require a smooth surface for the cable. Notches in the cable and breaks that soon arise as a result of said notches are accepted. To prevent cable damage of this type, an intermediate layer consisting of a thermoplastic plastic is applied to the core cable or core strand prior to the stranding process and the outer strand layer is pressed into the heated plastic during said stranding process. It has been demonstrated that this type of support for the outer strands does not impair the hammering process or the desired deformation. Notches in intersecting cable strands do not occur. The plastic intermediate layer acts in a similar manner to a sealed liquid, in which the pressure prevails on all sides, resisting the hammer blows that impact simultaneously from different sides and preventing increased forces from being produced between the intersecting cable strands. A cable comprising a core consisting of a plastic strand can also be hammered if necessary in such a manner.

1 . Method for producing a wire cable with a core cable or core strand, in which, after the outer strand layer has been stranded, the wire cable is hammered to smooth its surface and/or to increase its space factor, wherein an intermediate layer of a plastic material is applied to the core cable or core strand before the outer layer of strands is stranded, and the outer layer of strands is pressed into the plastic during the stranding process.  
     
     
         2 . Method for producing a wire cable with a core that consists of a plastic strand, on which a layer of strands is stranded, wherein the wire cable is hammered after the stranding of the strand layer.  
     
     
         3 . Method in accordance with  claim 1 , wherein a thermoplastic is used for the intermediate layer, which is preferably heated during the process of stranding the outer strand layer.  
     
     
         4 . Method in accordance with  claim 1 , wherein standard strands with a core wire and one wire layer or parallel-lay strands are used for the outer strand layer.  
     
     
         5 . Method in accordance with  claim 1 , wherein strands with readily deformable core, especially a core of soft iron or plastic, e used for the outer strand layer.  
     
     
         6 . Method in accordance with  claim 1 , wherein preferably four hammers are used for the hammering, which are moved towards the wire cable from different sides and essentially completely surround it with adapted curvatures at the instant of their simultaneous impact.  
     
     
         7 . Method in accordance with  claim 1 , wherein hammers are used which have an axial extent of at least twice the cable diameter and preferably have an expanded, tapering inlet.  
     
     
         8 . Method in accordance with  claim 1 , wherein after it has en hammered, the wire cable is subjected to a surface treatment or ated or provided with a sheath.  
     
     
         9 . Wire cable, which is hammered to smooth its surface and/or to compress it, wherein it has a plastic intermediate layer ( 4 ) or a plastic core beneath the hammered outer strand layer ( 5 ).  
     
     
         10 . Wire cable in accordance with  claim 9 , wherein the outer strand layer ( 5 ) consists of standard strands ( 6 ) with a core wire and only one wire layer or parallel-lay strands.