Taper-adjustable roller and strip conveying device

Abstract

A taper-adjustable roller includes a support shaft, support sheets arranged circumferentially around the support shaft, and a first push member. Circumferential surfaces of the support sheets at sides of the support sheets facing away from the support shaft are assembled to form a roll surface. Each support sheet has a first end and a second end in an axial direction of the support shaft. The support sheets are swingable relative to the support shaft. The first push member is disposed on the support shaft, and is configured to push the first ends of the support sheets in a substantially radial direction, to move the first ends towards the support shaft and move the second ends away from the support shaft, or to move the first ends away from the support shaft and move the second ends towards the support shaft.

What is claimed is: 
     
         1 . A taper-adjustable roller, comprising:
 a support shaft;   a plurality of support sheets arranged circumferentially around the support shaft, circumferential surfaces of the plurality of support sheets at sides of the plurality of support sheets facing away from the support shaft being assembled to form a roll surface, each of the plurality of support sheets having a first end and a second end in an axial direction of the support shaft, and each of the plurality of support sheets being swingable relative to the support shaft; and   a first push member provided on the support shaft, the first push member being configured to push the first ends of the plurality of support sheets in a substantially radial direction, to move the first ends towards the support shaft and move the second ends away from the support shaft, or to move the first ends away from the support shaft and move the second ends towards the support shaft, enabling a diameter of the roll surface to gradually varying from the first ends to the second ends.   
     
     
         2 . The taper-adjustable roller according to  claim 1 , further comprising:
 a converging member configured to press and/or tension the plurality of support sheets towards the support shaft, enabling the plurality of support sheets to tend to converge towards the support shaft.   
     
     
         3 . The taper-adjustable roller according to  claim 1 , further comprising:
 a second push member configured to support the second ends of the plurality of support sheets in the substantially radial direction.   
     
     
         4 . The taper-adjustable roller according to  claim 3 , wherein:
 the second push member has a second push conical surface, the second push conical surface having an axis direction parallel to the axial direction of the support shaft; and   the second push member is movable in the axial direction of the support shaft, to bring the second ends of the plurality of support sheets to be into sliding contact with the second push conical surface.   
     
     
         5 . The taper-adjustable roller according to  claim 4 , wherein each of the plurality of support sheets is provided with a second adjustment portion protruding towards the second push member, the second adjustment portion having a second contact surface in sliding contact with the second push conical surface. 
     
     
         6 . The taper-adjustable roller according to  claim 1 , wherein each of the plurality of support sheets is provided with a swing support portion, the swing support portion being engaged with the support shaft to support the support sheet to swing on the support shaft about the swing support portion. 
     
     
         7 . The taper-adjustable roller according to  claim 6 , further comprising:
 a limit portion provided at the support shaft and configured to limit the swing support portion to swing within a range limited by the limit portion.   
     
     
         8 . The taper-adjustable roller according to  claim 7 , wherein the limit portion has a recess formed at the support shaft, the swing support portion partially swinging in the recess. 
     
     
         9 . The taper-adjustable roller according to  claim 8 , wherein a contact portion between the swing support portion and the recess has an arc shape. 
     
     
         10 . The taper-adjustable roller according to  claim 1 , wherein:
 the first push member has a first push conical surface, the first push conical surface having an axis direction parallel to the axial direction of the support shaft; and   the first push member is movable in the axial direction of the support shaft, to bring the first ends of the plurality of support sheets to be into sliding contact with the first push conical surface, and to push the first ends of the plurality of support sheets by the first push conical surface to move close to or away from the support shaft.   
     
     
         11 . The taper-adjustable roller according to  claim 10 , wherein each of the plurality of support sheets is provided with a first adjustment portion protruding towards the first push member, the first adjustment portion having a first contact surface in sliding contact with the first push conical surface. 
     
     
         12 . The taper-adjustable roller according to  claim 10 , wherein the first push member is threadedly connected to the support shaft in the axial direction of the support shaft. 
     
     
         13 . The taper-adjustable roller according to  claim 1 , wherein:
 each of the plurality of support sheets comprises:
 a roll surface forming portion, a surface of the roll surface forming portion at least partially forming the roll surface; and 
 a positioning portion located at a radially inner side of the roll surface forming portion; and 
   the support shaft is provided with stop portions, the stop portions being respectively disposed at two ends of the support shaft, the stop portions being engaged with the positioning portion to limit an axial movement of the support sheet.   
     
     
         14 . The taper-adjustable roller according to  claim 1 , wherein the support shaft comprises:
 an inner shaft; and   an outer shaft having a through hole in an axial direction of the outer shaft, the inner shaft being disposed in the through hole and configured to rotatably support the outer shaft, and the plurality of support sheets being connected to the outer shaft.   
     
     
         15 . The taper-adjustable roller according to  claim 14 , wherein:
 the first push member is disposed between the outer shaft and the inner shaft; and   the plurality of support sheets at least partially penetrates a sidewall of the outer shaft to be in sliding contact with the first push member.   
     
     
         16 . A strip conveying device, comprising the taper-adjustable roller according to  claim 1 .