Nozzle for supporting a weft thread in a weaving machine

Abstract

Nozzle for supporting a weft thread in a weaving machine, provided with a flow-through canalisation for a fluid flowing out in at least one outlet opening, wherein the nozzle is at least partially composed of segments.

1 . Nozzle for supporting a weft thread in a weaving machine, comprising at least one outlet opening; a flow-through canalisation for supplying a fluid to said at least one outlet opening; said nozzle being at least partially formed of segments.  
   
   
       2 . Nozzle according to  claim 1 , wherein the outer shape of the nozzle and the inner shape of the flow-through canalisation are different from each other and wherein said segments define said inner shape.  
   
   
       3 . Nozzle according to  claim 1 , wherein the segments are plate-shaped.  
   
   
       4 . Nozzle according to  claim 1 , wherein the segments are disposed in a casing.  
   
   
       5 . Nozzle according to  claim 1 , wherein at least a number of the segments are mutually connected.  
   
   
       6 . Nozzle according to  claim 1 , wherein at least a number of the segments are pressed loosely against each other.  
   
   
       7 . Nozzle according to  claim 1 , wherein the nozzle is elongated and the segments extend along the longitudinal direction of the nozzle.  
   
   
       8 . Nozzle according to  claim 3 , wherein the segments are disposed such that they are directed with one edge facing towards a side of the nozzle in which the outlet opening or outlet openings are located.  
   
   
       9 . Nozzle according to  claim 1 , wherein said segments at least in part form one or more partition walls within the flow-through canalisation.  
   
   
       10 . Nozzle according to  claim 9 , wherein the nozzle has at least two outlet openings, and wherein one or more partition walls define separate ducts extending towards a respective outlet opening and/or groups of outlet openings.  
   
   
       11 . Nozzle according to  claim 10 , wherein said one or more partition walls extend up to a side of the nozzle where the outlet openings open into the environment.  
   
   
       12 . Nozzle according to  claim 9 , wherein one or more of said partition walls are formed as a longitudinal partition.  
   
   
       13 . Nozzle according to  claim 12 , wherein the partition wall or walls enable a lateral division of the flow-through canalisation in the ducts.  
   
   
       14 . Nozzle according to  claim 9 , wherein the nozzle is elongated and the flow-through canalisation generally extends in the longitudinal direction of the nozzle and traces a curve near a top end of the nozzle to finally flow into the outlet opening or outlet openings, and further wherein one or more of the partition walls extend through at least a part of said curve.  
   
   
       15 . Nozzle according to  claim 9 , wherein at least one of the partition walls is made as a cross partition defining a blade-shaped guide near the outlet opening or outlet openings.  
   
   
       16 . Nozzle according to  claim 9 , wherein at least one of the partition walls extends crosswise in one piece from one side to the other side of the flow-through canalisation.  
   
   
       17 . Nozzle according to  claim 9 , wherein mainly all the partition walls extend downward up to a distance (A) from the outlet opening or outlet openings which is larger than the length of the hairs which are usually found on textile fibres.  
   
   
       18 . Nozzle according to  claim 1 , wherein the segments, as well as any partition walls formed by same, comprise plate-shaped elements which extend slantingly at an angle (H) according to a general direction which, when the nozzle is mounted in a weaving machine, extends slantingly towards a reed of the weaving machine.  
   
   
       19 . Nozzle according to  claim 1 , wherein at least one of the segments comprises an intermediate connection forming a reinforcement for a body of the nozzle, at least in the central part of the nozzle.  
   
   
       20 . Nozzle according to  claim 1 , wherein at lease some of the segments are formed to serve as guiding elements to direct a fluid jet discharged from the outlet opening or outlet openings when the nozzle is in use.  
   
   
       21 . Nozzle according to  claim 1 , wherein the segments comprise straight, mainly flat contiguous elements.  
   
   
       22 . Nozzle according to  claim 1 , wherein at least some of the segments comprise elements having varying thicknesses and/or shapes which are not flat.  
   
   
       23 . Nozzle according to  claim 1 , wherein the nozzle has a series of outlet openings which are arranged step-like, by means of the segmented construction, from one far end of the series to the other far end thereof.  
   
   
       24 . Nozzle for supporting a weft thread in a weaving machine, said nozzle comprising a flow-through canalisation for a fluid flowing out of at least one outlet opening of the nozzle, comprising one or a combination of two or more of the following: 
 the nozzle is provided with at least two outlet openings, and wherein at least one partition wall is provided in the top part of the nozzle separating at least the two outlet openings, at least at a point located situated inside the flow-through canalisation and up to an outer wall of the nozzle, or practically up to said outer wall, where the outlet openings open to the environment;    the nozzle is elongated and is provided with one or several partition walls extending in the longitudinal direction of the flow-through canalisation, said partition walls extending crosswise and continuing substantially from one side of the flow-through canalisation to the opposite other side;    the nozzle is provided with at least one outlet opening and at least one partition wall made as a cross partition in the shape of a blade-shaped guide disposed near each outlet opening;    the nozzle is provided with one or more partition walls, at least a number of said partition walls extending downward up to at least a distance (A) from each outlet opening, said distance being larger than the hair length of the hairs which are usually found on textile fibres;    the nozzle is provided with at least an intermediate connection extending through the flow-through canalisation and forming a reinforcement for a body of the nozzle;    the nozzle is provided with a series of outlet openings which are arranged in a step-like manner from one far end of said series to the other far end; and    the nozzle has a head part, including said canalisation and wherein partition walls are disposed in the flow-through canalisation of said head part which, due to their direction and/or shape, function as guiding elements to direct a fluid jet leaving the outlet opening or outlet openings when the nozzle is in use.