Continuous twisting of stranding machine

Abstract

Continuous twisting or stranding machine A twisting, doubling and/or stranding machine in which one of the yarns ( 1 ) is supplied from elemental spools (B) supported on a creel ( 3 ) mounted at the upper part of the machine, it being possible for said creel to be moved between a lowered loading position and a raised working position and vice versa. According to the invention, control of the movements of the spool-holder creel ( 3 ) is provided by a ram ( 14 ) mounted on the articulated pantograph-form assembly and the end of the rod of which can pivot about a fixed point ( 15 ) of the plate ( 6 ) fixed to the structure of the machine, and can do so in such a way as to adopt two positions—one in which the rod of the ram is in the retracted position inside the body, positioning the creel ( 3 ) in a lowered loading position—movement into the raised position being obtained by action of a fluid, liquid or air under pressure, acting on the front face of the piston and tending thus to push the body of the ram ( 14 ) along the rod to bring it into the raised working position.

1 . A twisting, doubling and/or stranding-machine in which one of the yarns for twisting, doubling or stranding is supplied from elemental spools (B) supported on a creel ( 3 ) mounted at the upper part of the machine above the twisting and respooling assembly proper, it being possible for said creel to be moved between a lowered loading position and a raised working position and vice versa, said movement being achieved by mounting the creel ( 3 ) on the structure of the machine via an assembly in the form of a deformable parallelogram known as a pantograph comprising two parallel longitudinal members ( 4 ,  5 ), the ends of which are articulated, on the one hand, to a support plate ( 6 ) fixed at the upper part of the structure of the machine and, on the other hand, to a base ( 7 ) acting as a support for the supply spool (B) and for the spare spool (B 1 ), the yarn ( 1 ) passing through a guide eye ( 8 ), said deformable assembly being associated with means which allow the creel to be locked automatically in position, wherein control of the movements of the spool-holder creel ( 3 ) is provided by a ram ( 14 ) mounted on the articulated pantograph-form assembly and the end of the rod of which can pivot about a fixed point ( 15 ) of the plate ( 6 ) fixed to the structure of the machine, and can do so in such a way as to adopt two positions—one in which the rod of the ram is in the retracted position inside the body, positioning the creel ( 3 ) in a lowered loading position and the other a raised position—movement being obtained by action of a fluid, liquid or air under pressure, acting on the front face of the piston and tending thus to push the body of the ram ( 14 ) along the rod to bring it into the raised working position.  
     
     
         2 . The twisting machine as claimed in  claim 1 , wherein the movements of the spool-holder creel are controlled by means of a valve ( 17 ) associated with each elemental creel that the machine comprises, which valve can be operated directly by the operator and is connected, on the one hand, to a supply circuit ( 18 ) connected to a source common to all the positions of the machine and, on the other hand, to a control circuit ( 19 ) specific to each position and opening into the body of the ram ( 14 ) to act on the piston thereof.