Tape binding device

Abstract

A tape binding device includes a loop forming mechanism for forming a loop for winding a material to be bound at an end of a tape. A supplying mechanism supplies a tape from a tape roll to the loop forming mechanism. The supplying mechanism includes a conveying roller and a conveying belt. The conveying belt includes a region in a curved shape along a predetermined region on a peripheral surface of the conveying roller. The tape is conveyed while being sandwiched between the conveying roller and the conveying belt.

1 . A tape binding device, comprising:
 a loop forming mechanism for forming a loop for winding a material to be bound at an end of a tape; and   a supplying mechanism for supplying a tape from a tape roll to the loop forming mechanism,   wherein the supplying mechanism includes a conveying roller and a conveying belt including a region in a curved shape along a predetermined region on a peripheral surface of the conveying roller,   the tape is conveyed while being sandwiched between the conveying roller and the conveying belt,   the conveying belt includes a region stretched between a pair of pulleys,   the region in a curved shape is formed in a pair of the region stretched between the pair of pulleys, and   a plane including central axes of the pair of respective pulleys crosses the conveying roller.   
   
   
       2 . The tape binding device according to  claim 1 , wherein the conveying belt is pressed against the peripheral surface of the conveying roller by a tension of the conveying belt itself. 
   
   
       3 . The tape binding device according to  claim 1 , further comprising a tensioner for applying a tension to the conveying belt,
 wherein the tensioner includes a tensioner pulley engaged with the conveying belt and an urging member for urging the tensioner pulley.   
   
   
       4 . (canceled) 
   
   
       5 . The tape binding device according to  claim 1 , wherein
 the loop forming mechanism includes a plurality of belt conveying mechanisms arranged in a polygonal shape in a conveyance direction for absorbing the tape by air suction and conveying the tape, and   each of the belt conveying mechanisms includes a plurality of endless conveying belts extending parallel to the conveyance direction and arranged in a direction perpendicular to the conveyance direction with a space for air suction provided therebetween.   
   
   
       6 . The tape binding device according to  claim 1 , wherein a central angle corresponding to the predetermined region is in a range of 90 to 120 degrees. 
   
   
       7 . A tape binding device, comprising:
 a loop forming mechanism for forming tape into a loop to bind a material with the tape; and   a supplying mechanism for supplying the tape to the loop forming mechanism, the supplying mechanism including a conveying roller and a conveying belt, the conveying belt including a region disposed between a pair of pulleys and stretched in a curved shape along a predetermined region on a peripheral surface of the conveying roller, the tape being conveyed while sandwiched between the conveying roller and the conveying belt,   wherein a plane, that includes central axes of the pair of pulleys, crosses the conveying roller.