Method and device for connecting a plurality of threads, especially the ends of threads

Abstract

A method for connecting at least two threads, especially thread end regions, which are arranged overlapping and are connected together, wherein an auxiliary connection element is guided several times around the adjacent threads, the connection element remaining on the threads.

1 . A method for connecting at least two threads, especially thread end regions, which are arranged overlapping and are connected together, wherein an auxiliary connection element is guided several times around the adjacent threads, the connection element remaining on the threads.  
     
     
         2 . The method according to  claim 1 , wherein the auxiliary connection element is under tensile stress whilst it is guided around the threads.  
     
     
         3 . The method according to  claim 1 , wherein whilst the auxiliary element is guided around the threads, the threads are aligned substantially rectilinearly.  
     
     
         4 . The method according to  claim 1 , wherein the auxiliary element is wound around the threads in the form of coils.  
     
     
         5 . The method according to  claim 1 , wherein a yarn, preferably a fusible bonding yarn or a combi fusible bonding yarn, is guided around the threads.  
     
     
         6 . The method according to  claim 1 , wherein an additional material is applied to the threads, to produce material locking, especially an adhesive connection.  
     
     
         7 . The method according to  claim 6 , wherein an adhesive is applied to the threads as additional material.  
     
     
         8 . The method according to  claim 6 , wherein an auxiliary element which contains the additional material is wound around the threads.  
     
     
         9 . The method according to  claim 8 , wherein the auxiliary element is heated during and/or after the winding around the threads to produce the connection.  
     
     
         10 . The method according to  claim 1 , wherein the auxiliary element is wound around the threads using a gas, preferably air.  
     
     
         11 . The method according to  claim 10 , wherein the threads are arranged in at least one chamber of an air eddy device and the auxiliary element is thereafter inserted into the at least one chamber of the air eddy device.  
     
     
         12 . The method according to  claim 11 , wherein during insertion the auxiliary element has a direction of motion with a component which runs tangentially to the longitudinal elongation of the threads.  
     
     
         13 . The method according to  claim 11 , wherein the auxiliary element is inserted into the chamber of the air eddy device using an air flow produced by a thread insertion nozzle.  
     
     
         14 . The method according to  claim 10 , wherein the auxiliary element is grasped by flowing air, especially by an air eddy, and is guided around the threads.  
     
     
         15 . The method according to  claim 10 , wherein the auxiliary element is wound in two different directions.  
     
     
         16 . The method according to  claim 15 , wherein the first part length of the auxiliary element is inserted in a first chamber and wound around the threads in a first winding direction using a first air eddy and that a second part length of the auxiliary element is inserted in a second chamber of the air eddy device and is wound around the threads in a winding direction opposite to the first winding direction using a second air eddy.  
     
     
         17 . A method for connecting the threads of a first warp thread layer with the threads of a second warp thread layer wherein respectively one thread of the first warp thread layer is arranged overlapping with respect to a thread of the second warp thread layer, wherein at least one thread of the first warp thread layer is connected to at least one thread of the second warp thread layer using one of the methods according to  claim 1 .  
     
     
         18 . An apparatus for connecting ends of at least two threads which is provided with a holding device for holding overlapping threads, which has a connecting device with which the threads arranged in the holding device are connected together, wherein a helical coil of the auxiliary connection element around the threads can be produced with the connecting device.  
     
     
         19 . The apparatus according to  claim 18 , wherein the auxiliary element is guided several times around the threads using the connecting device.  
     
     
         20 . The apparatus according to  claim 18 , wherein the connecting device has a means for producing an air eddy flowing around the thread end regions with which the auxiliary element can be guided around the threads arranged in the holding device.  
     
     
         21 . The apparatus according to  claim 20 , further comprising an air eddy device in which the thread end regions are arranged in at least one chamber, in the area of one end of the chamber compressed air can be introduced via an introduction means, said compressed air flowing around the thread end regions and towards the other end of the chamber as air eddies, and furthermore a means is provided for inserting an auxiliary element into the chamber and into the air eddy.  
     
     
         22 . The apparatus according to  claim 21 , wherein the air eddy device has two chambers and compressed air to produce air eddies can be introduced into each of the two chambers.  
     
     
         23 . The apparatus according to  claim 22 , wherein air eddies which flow in different directions of rotation about the thread ends can be produced using the introduction means of both chambers.  
     
     
         24 . The apparatus according to  claim 21 , wherein the means for introducing an auxiliary element has a thread insertion nozzle.  
     
     
         25 . The apparatus according to  claim 18 , further comprising an heating device with which the auxiliary element arranged on the thread end regions can be heated.  
     
     
         26 . A device for connecting threads of a first thread layer with threads of a second thread layer comprising an apparatus according to  claim 18 .  
     
     
         27 . A mechanically produced connection of at least two threads, wherein the connection is located in the thread end regions of the threads, where the threads overlap, wherein the thread end regions of the threads are jointly surrounded by a longitudinally extendable auxiliary element which is especially bendable in the load-free state but is under tensile stress in the connection.  
     
     
         28 . The connection according to  claim 27 , wherein the auxiliary element is wound around the thread end regions in the form of a helical coil with a plurality of turns.  
     
     
         29 . The connection according to  claim 27 , further comprising a material locking between the auxiliary element and the thread end regions.  
     
     
         30 . The connection according to  claim 27 , wherein the auxiliary element is a yarn.  
     
     
         31 . The connection according to  claim 26 , wherein the yarn is a fusible bonding yarn.