Sheet manufacturing apparatus

Abstract

A sheet manufacturing apparatus includes a sheet forming unit that forms a sheet, and a transport unit that transports the sheet along a transport path, in which the transport unit includes a plurality of transport rollers that transport the sheet, a sheet sensor that detects an abnormality generated in transport of the sheet in the transport unit, a cover that is installed above the transport path and is configured to rotate around a shaft of a rotation shaft, and a drive motor that rotates the cover, the cover moves between an open position that opens an upper portion of the transport path and a closed position that covers the upper portion of the transport path, and the cover moves from the closed position to the open position by the drive motor being rotationally driven when the sheet sensor detects an abnormality generated in the transport of the sheet.

What is claimed is: 
     
         1 . A sheet manufacturing apparatus comprising:
 a sheet forming unit that forms a sheet by accumulating a material containing fibers and then compressing the accumulated material; and   a transport unit that transports the sheet along a transport path, wherein   the transport unit includes   a plurality of transport rollers that transport the sheet,   an abnormality detection sensor that detects an abnormality generated in transport of the sheet in the transport unit,   a cover that is installed above the transport path and is configured to rotate around a shaft of a rotation shaft, and   a drive motor that rotates the cover by being rotationally driven,   the cover moves between an open position that opens an upper portion of the transport path and a closed position that covers the upper portion of the transport path, and   the cover moves from the closed position to the open position by the drive motor being rotationally driven when the abnormality detection sensor detects an abnormality generated in the transport of the sheet.   
     
     
         2 . The sheet manufacturing apparatus according to  claim 1 , further comprising:
 a fixing pin;   a hook that is provided in the cover and of which an engagement with the fixing pin is unlocked by rotating; and   a solenoid that is coupled to the hook and rotates the hook by being driven, wherein   the cover is configured to move from the closed position to the open position by unlocking the engagement between the hook and the fixing pin, and   the engagement between the hook and the fixing pin is unlocked by the solenoid being driven when the abnormality detection sensor detects an abnormality generated in the transport of the sheet.   
     
     
         3 . The sheet manufacturing apparatus according to  claim 1 , further comprising:
 the rotation shaft that is attached to the cover and is rotatably supported such that the cover rotates around the shaft; and   a coupling portion that restricts rotation around the shaft of the rotation shaft, wherein   the coupling portion   allows rotation of the rotation shaft when the cover moves from the closed position to the open position, and   restricts rotation of the rotation shaft when the cover moves from the open position to the closed position.   
     
     
         4 . The sheet manufacturing apparatus according to  claim 3 , further comprising:
 a transmission gear that transmits a driving force of the drive motor to the rotation shaft, wherein   the coupling portion is a one-way hinge provided between the transmission gear and the rotation shaft.   
     
     
         5 . The sheet manufacturing apparatus according to  claim 1 , wherein
 the plurality of transport rollers include a first transport roller and a second transport roller installed downstream of the first transport roller in the transport path,   the transport unit includes an upstream transport unit in which the first transport roller is installed and a downstream transport unit in which the second transport roller is installed, and   the cover and the drive motor are installed in the upstream transport unit.   
     
     
         6 . The sheet manufacturing apparatus according to  claim 5 , wherein
 the first transport roller is composed of a pair of an upper side roller and a lower side roller, and   the upper side roller is installed in the cover.