Sheet manufacturing apparatus

Abstract

A sheet manufacturing apparatus 1 includes: a supply unit 200 configured to supply powder; a mixing unit 33 configured to mix fibers and the powder to form a mixture; a deposition unit 50 configured to deposit the mixture to form a web W; and a forming unit 70 configured to compress the web W to form a sheet, the supply unit 200 includes a cylindrical container configured to store the powder, a cylindrical inner wall 221 into which the cylindrical container can be inserted, a holding unit 220 configured to be in contact with the cylindrical container, and a driving unit 230, when the cylindrical container is inserted into the holding unit 220, the holding unit 220 and the driving unit 230 hold the cylindrical container, a surface of a roller of the driving unit 230 is provided with a plurality of first protrusions 336, an outer surface of the cylindrical container is provided with a plurality of second protrusions 317, and the plurality of first protrusions 336 are engaged with the plurality of second protrusions 317.

What is claimed is: 
     
         1 . A sheet manufacturing apparatus comprising:
 a supply unit configured to supply powder;   a mixing unit configured to mix fibers and the supplied powder to form a mixture;   a deposition unit configured to deposit the mixture to form a web; and   a forming unit configured to compress the web to form a sheet, wherein   the supply unit includes   a cylindrical container configured to store the powder,   a holding unit including a cylindrical inner wall into which the cylindrical container can be inserted and a pressing roller located in the inner wall and configured to be in contact with the cylindrical container, and   a driving unit including a drive roller,   when the cylindrical container is inserted into the holding unit, the pressing roller and the drive roller hold the cylindrical container,   when the drive roller rotates, the cylindrical container rotates, and the powder is supplied from the cylindrical container,   a surface of the drive roller is provided with a plurality of first protrusions,   an outer surface of the cylindrical container is provided with a plurality of second protrusions, and   the plurality of first protrusions are engaged with the plurality of second protrusions.   
     
     
         2 . The sheet manufacturing apparatus according to  claim 1 , wherein
 the holding unit includes a plurality of the pressing rollers.   
     
     
         3 . The sheet manufacturing apparatus according to  claim 1 , wherein
 the cylindrical container includes an outer cylinder and an inner cylinder.   
     
     
         4 . The sheet manufacturing apparatus according to  claim 3 , wherein
 the outer cylinder is provided with a first opening portion, the inner cylinder is provided with a second opening portion, and the first opening portion is opened and closed by the inner cylinder rotating relative to the outer cylinder.   
     
     
         5 . The sheet manufacturing apparatus according to  claim 3 , wherein
 the plurality of second protrusions are provided on an outer surface of the outer cylinder.