Device for transporting sheet-shaped materials

Abstract

A device for alternate transport of sheet-shaped materials ( 1 ) has at least one frictional wheel ( 41, 42 ) as well as a housing ( 20, 21, 22 ), an actuating element ( 30 ), a drive ( 34 ) for the actuating element ( 30 ), a control ( 70 ) for the drive ( 34 ) and at least one driven transport element ( 50, 52 ), whereby at least one frictional wheel ( 41, 42 ) is mounted so that it can rotate at the end of a spring plate ( 10 ), whereby the spring plate ( 10 ) is mounted with respect to the housing ( 20, 21, 22 ) and the actuating element ( 30 ) in such a way that the spring plate ( 10 ) can be brought into a first active bending state and into a second passive bending state by means of the actuating element ( 30 ), whereby in the active bending state the at least one frictional wheel ( 41, 42 ) is in working connection with the transport element ( 50, 52 ) and in the passive bending state it is not.

1 . An apparatus for transporting sheet-shaped materials comprising: 
 a spring plate;    a frictional wheel rotatably mounted on the spring plate;    an actuating element for bending the spring plate between a first active bending state and a second passive bending state;    wherein the frictional wheel is in contact with sheet-shaped materials when the spring plate is in the active bending state and is not in contact with sheet-shaped materials when the spring plate is in the passive bending state.    
     
     
         2 . An apparatus in accordance with  claim 1 , wherein the spring plate is predeformed with a radius.  
     
     
         3 . An apparatus in accordance with  claim 1 , wherein the spring plate is in a bi-stable bending state when in one of the active bending or passive bending states.  
     
     
         4 . An apparatus in accordance with  claim 1 , wherein when the spring plate is in the passive bending state, a restoring force pre-stresses it in the direction of the active bending state.  
     
     
         5 . An apparatus in accordance with  claim 4 , wherein the restoring force is at least partially applied by the pre-stressing elements.  
     
     
         6 . An apparatus in accordance with  claim 1 , wherein the actuating element is a cam wheel that has at least one minimum and one maximum radius (R1, R2) and the transition between the radii (R1, R2) is continuous.  
     
     
         7 . An apparatus in accordance with  claim 1 , wherein the spring plate is a plate of spring steel.  
     
     
         8 . An apparatus for transporting sheet-shaped materials comprising: 
 a housing;    a spring plate mounted in the housing;    a frictional wheel rotatably mounted on the spring plate;    an actuating element for bending the spring plate between a first active bending state and a second passive bending state;    a controller for controlling the actuating element,    wherein the frictional wheel is in contact with sheet-shaped materials when the spring plate is in the active bending state and is not in contact with sheet-shaped materials when the spring plate is in the passive bending state.    
     
     
         9 . An apparatus in accordance with  claim 8 , wherein the spring plate is predeformed with a radius.  
     
     
         10 . An apparatus in accordance with  claim 8 , wherein the spring plate is in a bi-stable bending state when in one of the active bending or passive bending states.  
     
     
         11 . An apparatus in accordance with  claim 8 , wherein when the spring plate is in the passive bending state, a restoring force pre-stresses it in the direction of the active bending state.  
     
     
         12 . An apparatus in accordance with  claim 11 , wherein the restoring force is at least partially applied by the pre-stressing elements.  
     
     
         13 . An apparatus in accordance with  claim 8 , wherein the actuating element is a cam wheel that has at least one minimum and one maximum radius (R1, R2) and the transition between the radii (R1, R2) is continuous.  
     
     
         14 . An apparatus in accordance with  claim 8 , wherein the spring plate is a plate of spring steel.  
     
     
         15 . A method for transporting sheet-shaped materials comprising: 
 providing a spring plate;    mounting a rotatable frictional wheel on the spring plate;    bending the spring plate between a first active bending state and a second passive bending state;    wherein the frictional wheel comes in contact with sheet-shaped materials when the spring plate is in the active bending state and is not in contact with sheet-shaped materials when the spring plate is in the passive bending state.    
     
     
         16 . A method in accordance with  claim 15 , wherein the spring plate is predeformed with a radius.  
     
     
         17 . A method in accordance with  claim 15 , wherein the spring plate is in a bi-stable bending state when in one of the active bending or passive bending states.  
     
     
         18 . A method in accordance with  claim 15 , wherein when the spring plate is in the passive bending state, a restoring force pre-stresses it in the direction of the active bending state.  
     
     
         19 . A method in accordance with  claim 18 , wherein the restoring force is at least partially applied by the pre-stressing elements.  
     
     
         20 . A method in accordance with  claim 15 , wherein bending is performed by an actuating element.  
     
     
         21 . A method in accordance with  claim 20 , wherein the actuating element is a cam wheel that has at least one minimum and one maximum radius (R1, R2) and the transition between the radii (R1, R2) is continuous.  
     
     
         22 . A method in accordance with  claim 15 , wherein the spring plate is a plate of spring steel.