Strapping head for steel-wire coil or steel-bar bundle

Abstract

A strapping head having a feed unit for advancing a strap downstream and tensioning the strap around an object to be strapped and a crimp unit downstream of the feed unit for crimping two sections of the strap to each other has for each of the units an electric drive motor. In addition the head is provided with an electronic programmable controller connected to both of the units for operating same in accordance with a resettable program.

1 . In a strapping head having:
 feed means for advancing a strap downstream and tensioning the strap around an object to be strapped; and   crimp means downstream of the feed means for crimping two sections of the strap to each other,   
       the improvement wherein
 each of the means has an electric drive motor; and 
 the head is provided with an electronic programmable controller connected to both of the means for operating same in accordance with a resettable program. 
 
     
     
         2 . The strapping head defined in  claim 1 , wherein each of the motors has its own respective such electronic controller. 
     
     
         3 . The strapping head defined in  claim 1 , further comprising
 clamping means for arresting the strap during crimping by the crimping means, the clamping means having its own electric drive motor.   
     
     
         4 . The strapping head defined in  claim 1  with jaw wear compensation. 
     
     
         5 . The strapping head defined in  claim 1  wherein the head can produce variable strength bindings.