Device having a surface displaceable in two spatial directions

Abstract

A device having a surface displaceable in two spatial directions, including a carrier frame; a conveyor means disposed such that it circulates on the carrier frame in a first direction; a plurality of belt units, each belt unit being fastenable to the conveyor means in such a way that it is displaceable in the first direction, and each belt unit including: a first continuous belt that is disposed such that it circulates on the belt unit in a second direction; and a first driving roller for driving the first continuous belt in the second direction; each first driving roller being actuated by a dedicated drive; and each belt unit additionally has a second continuous belt that is situated on the belt unit parallel to the first continuous belt.

1 . A device having a surface displaceable in two spatial directions, comprising:
 a carrier frame;   a conveyor means disposed such that it circulates on the carrier frame in a first direction;   a plurality of belt units,   each belt unit being fastenable to the conveyor means in such a way that it is displaceable in the first direction, and each belt unit comprising:   a first continuous belt that is disposed such that it circulates on the belt unit in a second direction; and a first driving roller for driving the first continuous belt in the second direction;   each first driving roller being actuated by a dedicated drive; and   each belt unit additionally has a second continuous belt that is situated on the belt unit parallel to the first continuous belt.   
   
   
       2 . The device as recited in  claim 1 , characterized in that the second continuous belt is flatter and/or shorter than the first continuous belt. 
   
   
       3 . The device as recited in  claim 1 , characterized in that each belt unit additionally has a second driving roller for driving the second continuous belt in the second direction. 
   
   
       4 . The device as recited in  claim 1 , characterized in that the first and second continuous belt are drivable by the same driving roller. 
   
   
       5 . The device as recited in  claim 1 , characterized in that the drives of the first driving rollers are connected in series. 
   
   
       6 . The device as recited in  claim 1 , characterized in that the drives of the driving rollers comprise hydraulic motors and/or electric motors. 
   
   
       7 . The device as recited in  claim 1 , characterized in that the carrier structure comprises a linear guide that is displaceable in the first direction and on which there is situated an endless rotating feedthrough for supplying energy to a drive, connected thereto, of a driving roller. 
   
   
       8 . The device as recited in  claim 7 , characterized in that the carrier structure comprises a support structure for supporting the continuous belts of the belt units, such that a connection between the endless rotating feedthrough and the drive connected thereto in the second direction, approximately in the center of the appertaining belt unit, can circulate together with this belt unit in the first direction. 
   
   
       9 . The device as recited in  claim 1 , characterized in that the conveyor means comprises two traveling chains that travel in the first direction, driven by at least one drive wheel per chain. 
   
   
       10 . The device as recited in  claim 9 , characterized in that the run-in of each chain to the associated drive wheel has a guide surface for guiding the chain, comprising essentially two linear segments that are essentially parallel, two clothoidal segments, and a circular segment, in such a way that the chain goes from a first linear segment, in which it runs essentially in the first direction, with constant curvature into a first clothoidal segment, and from here goes with constant curvature into the circular segment, and then goes from here with constant curvature into the second clothoidal segment, and from this segment goes with constant curvature into the second linear segment. 
   
   
       11 . The device as recited in  claim 9 , characterized in that each chain can be actuated by a first and second drive wheel, the first and/or second drive wheels of both chains each being controlled with angular synchronism. 
   
   
       12 . The device as recited in  claim 1 , characterized in that at least one drive wheel is a polygonal wheel that can enter into positive engagement with bolts of the respective chain. 
   
   
       13 . The device as recited in  claim 1 , characterized in that the second driving roller, together with the first driving roller, is made to travel by the drive of the belt unit in such a way that the first and second continuous belt have the same travel speed. 
   
   
       14 . The device as recited in  claim 1 , characterized in that each belt unit has a traction means that pulls the continuous belt to a carrier structure of the belt unit. 
   
   
       15 . The device as recited in  claim 12 , characterized in that the traction means comprises a magnet, in particular an electromagnet, and/or a vacuum device.