Selvedge tucker for weft threads

Abstract

A selvedge tucker for the formation of a cloth edge in a weaving machine is presented which comprises a selvedge tucking needle for tucking in one or more weft thread ends into a shed as well as an electrical drive for moving the selvedge tucking needle, with an emergency operating system and/or emergency drive being provided for the selvedge tucking needle in order to move the latter into a safe position in the event of a disturbance.

1 . Selvedge tucker for the formation of a cloth edge in a weaving machine, said selvedge tucker comprising a selvedge tucking needle for tucking one or more weft thread ends into a shed as well as an electrical drive for moving the selvedge tucking needle, characterized in that an emergency operating system and/or emergency drive is provided for the selvedge tucking needle in order to move the latter into a safe position in the event of a disturbance.  
   
   
       2 . Selvedge tucker in accordance with  claim 1 , with the selvedge tucking needle or a shaft which is connected to the latter being pivotally and/or displaceably mounted.  
   
   
       3 . Selvedge tucker in accordance with  claim 1 , comprising an active connection between the electrical drive and the selvedge tucking needle and/or the shaft in order to displace the selvedge tucking needle forward or backward by means of the electrical drive, as well as an additional compulsory guide for the selvedge tucking needle and/or for the shaft in such a manner that a pivotal movement of the selvedge tucking needle can be additionally produced by the forward or backward displacement respectively.  
   
   
       4 . Selvedge tucker in accordance with  claim 1 , comprising an active connection between the electrical drive and the selvedge tucking needle and/or the shaft such that the selvedge tucking needle can be pivoted in and out by means of the electrical drive, as well as an additional compulsory guide for the selvedge tucking needle and/or for the shaft in such a manner that a forward or backward displacement is associated with the pivoting in and out respectively.  
   
   
       5 . Selvedge tucker in accordance with  claim 1 , with the electrical drive comprising at least one electrical coil and at least one permanent magnet as well as a pivotal axis about which the coil or the permanent magnet is pivotally journalled.  
   
   
       6 . Selvedge tucker in accordance with  claim 1 , with the emergency operating system and/or emergency drive comprising at least one spring, in particular a mechanical or pneumatic spring.  
   
   
       7 . Selvedge tucker in accordance with  claim 1 , additionally comprising a holding device in order to hold the selvedge tucking needle in a safe position in the event of a disturbance.  
   
   
       8 . Weaving machine comprising a selvedge tucker in accordance with  claim 1.