Shaft drive transmission and coupling rod

Abstract

An inventive coupling rod ( 12, 42 ) for a shaft drive rod assembly ( 11 ) of a heald shaft ( 1 ) is designed as an open bent sheet metal component. The cross-section of this component is uniform along the length of the coupling rod ( 12, 42 ), with the exception of its ends ( 13, 14 ). Such a coupling rod ( 12, 42 ) permits the construction of shaft drive rod assemblies which are cost-effective and light-weight, and are suitable for the high operating speeds of the weaving machine.

1 . Coupling rod ( 12 ,  42 ) for a shaft drive rod assembly of a heald shaft ( 1 ), configured as an open formed sheet metal component.  
   
   
       2 . Coupling rod in accordance with  claim 1 , characterized in that the coupling rod ( 12 ,  42 ) has two ends ( 13 ,  14 ), between which extends a straight element formed by the formed sheet metal profile.  
   
   
       3 . Coupling rod in accordance with  claim 2 , characterized in that the coupling rod ( 12 ,  42 ) has at least two lateral walls ( 25 ,  26 ) arranged at a distance from each other, said walls extending parallel to a longitudinal axis that extends from the one end ( 13 ) to the other end ( 14 ).  
   
   
       4 . Coupling rod in accordance with  claim 3 , characterized in that the coupling rod ( 12 ) has, at least on its two ends ( 13 ,  14 ), cutouts ( 30 ,  31 ) through which respectively one arm ( 15 ,  16 ) of an angle lever ( 17 ,  18 ) to be connected between the two side walls ( 25 ,  26 ) can be inserted.  
   
   
       5 . Coupling rod in accordance with  claim 2 , characterized in that the element is forked on its two ends ( 13 ,  14 ).  
   
   
       6 . Coupling rod in accordance with  claim 3 , characterized in that each of the two lateral walls has on the ends ( 13 ,  14 ) of the coupling rod ( 12 ) at least one connection opening ( 32 ,  33 ,  34 ,  35 ), whereby the connection openings ( 32 ,  33 ,  34 ,  35 ) of the two lateral walls ( 25 ,  26 ) are in paired alignment.  
   
   
       7 . Coupling rod in accordance with  claim 1 , characterized in that the formed sheet metal component has at least one strip wall ( 27 ) and at least two lateral walls ( 25 ,  26 ) which are connected to each other by the strip wall ( 27 ).  
   
   
       8 . Coupling rod in accordance with  claim 7 , characterized in that the lateral walls ( 25 ,  26 ) have a height to be measured perpendicular to the strip wall ( 27 ), said height being greater than the width of the strip wall ( 27 ) to be measured perpendicular to the lateral walls ( 25 ,  26 ).  
   
   
       9 . Coupling rod in accordance with  claim 7 , characterized in that the lateral walls ( 25 ,  26 ) subtend respectively the same maximum angle of 90° with the strip wall ( 27 ).  
   
   
       10 . Coupling rod in accordance with  claim 7 , characterized in that the lateral walls ( 25 ,  26 ) have respectively one edge ( 40 ,  41 ) which is bent at least along a bending line relative to the remaining lateral wall ( 25 ,  26 ).  
   
   
       11 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 40 ,  41 ) of the lateral walls ( 25 ,  26 ) are bent toward each other.  
   
   
       12 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 540 ,  541 ) of the lateral walls ( 525 ,  526 ) are bent away from each other.  
   
   
       13 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 40 ,  41 ) of the lateral walls ( 25 ,  26 ) define a distance between each other.  
   
   
       14 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 840 ,  841 ) of the lateral walls ( 825 ,  826 ) are arranged so as to abut against each other.  
   
   
       15 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 840 ,  841 ) of the lateral walls ( 825 ,  826 ) are not joined to each other.  
   
   
       16 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 840 ,  841 ) of the lateral walls ( 825 ,  826 ) are joined to each other.  
   
   
       17 . Coupling rod in accordance with  claim 10 , characterized in that the edges ( 840 ,  841 ) of the lateral walls ( 825 ,  826 ) are joined to each other by means of a plastic material and/or by an adhesive.  
   
   
       18 . Coupling rod in accordance with  claim 10 , characterized in that the coupling rod ( 12 ′) has, at a point located between its ends ( 13 ,  14 ), a connecting device ( 46 ) for a support guide ( 45 ).  
   
   
       19 . Shaft drive rod assembly ( 11 ) for a heald shaft ( 1 ) comprising 
 at least two deflecting means ( 17 ,  18 ) for translating a horizontal back-and-forth movement into an up-and-down movement, whereby the deflecting means ( 17 ,  18 ) are connected to the heald shaft ( 1 );    at least one coupling rod ( 12 ,  42 ) in accordance with  claim 1 , said rod being connected to the deflecting means ( 17 ,  18 ) in order to transmit the back-and-forth movement between the deflecting means ( 17 ,  18 ).    
   
   
       20 . Shaft drive rod assembly in accordance with  claim 19 , characterized in that the deflecting means ( 17 , 18 ) are composed of respectively one angle lever having a fulcrum ( 19 ,  20 ) and two arms ( 15 ,  21 ;  16 ,  22 ) extending therefrom.  
   
   
       21 . Shaft drive rod assembly in accordance with  claim 20 , characterized in that the angle levers ( 17 ,  18 ) are connected to the heald shaft ( 1 ) by means of push rods ( 23 ,  24 ) which each adjoin an arm ( 21 ,  22 ) of each angle lever ( 17 ,  18 ) and are pivotally connected to said arm.