Packaging device

Abstract

A packaging device includes a conveyance portion that conveys a base on which an article is placed, a first guide portion that is configured to move along a first path extending from the first side toward a second side which is an opposite side to the first side and a second path extending from an upstream side to a downstream side in a conveyance direction on the second side, a first movement portion moves the first guide portion from the first side to the second side along the first path when an upstream side edge in the conveyance direction of the base, and a second movement portion moves the first guide portion from the upstream side to the downstream side in the conveyance direction along the second path after the first guide portion has been moved to the second side by the first movement portion.

What is claimed is: 
     
         1 . A packaging device comprising:
 a conveyance portion that conveys a base on which an article is placed;   a first guide portion that guides a film supplied from a first side and that is configured to move along a first path and a second path, the first side being a side on which the article is placed in the conveyance path through which the base conveyed by the conveyance portion passes, the first path being a path extending from the first side with respect to the conveyance path toward a second side that is an opposite side to the first side, and the second path being a path extending from an upstream side to a downstream side in a conveyance direction on the second side with respect to the conveyance path;   a first movement portion that causes the first guide portion to move from the first side to the second side along the first path when an upstream side edge in the conveyance direction of the base, which is conveyed from the upstream side toward the downstream side in the conveyance direction with respect to the film, reaches the downstream side in the conveyance direction of a position at which the first path and the conveyance path intersect with each other; and   a second movement portion that causes the first guide portion to move from the upstream side to the downstream side in the conveyance direction along the second path after the first guide portion has been moved to the second side by the first movement portion.   
     
     
         2 . The packaging device according to  claim 1 , wherein
 the first guide portion is a column-shaped guide roller, and   the first movement portion is a first support portion which detachably supports the guide roller and which is configured to move along the first path.   
     
     
         3 . The packaging device according to  claim 2 , wherein
 the first support portion includes
 a roller support portion that supports the guide roller from a direction from the second side toward the first side, and 
 a detachment switching portion that is configured to move in a direction between the first side and the second side with respect to the roller support portion, 
 wherein 
 when the detachment switching portion has moved in a direction from the second side toward the first side with respect to the roller support portion, the guide roller becomes detachable from the roller support portion, and 
 when the detachment switching portion has moved in a direction from the first side toward the second side with respect to the roller support portion, the guide roller is not detachable from the roller support portion. 
   
     
     
         4 . The packaging device according to  claim 3 , further comprising:
 a regulation portion that regulates the detachment switching portion from moving in the direction from the first side toward the second side when the first support portion is moving in the direction from the first side toward the second side,   wherein   when the movement of the detachment switching portion in the direction from the first side toward the second side is regulated by the regulation portion, the detachment switching portion moves in the direction from the second side toward the first side with respect to the roller support portion, and the guide roller becomes detachable from the roller support portion.   
     
     
         5 . The packaging device according to  claim 4 , wherein
 the roller support portion includes a shaft receiving portion that is recessed in the direction from the first side toward the second side,   the detachment switching portion includes a shaft presser portion that is recessed in the direction from the second side toward the first side, in a position that faces a recessed portion of the shaft receiving portion,   when the detachment switching portion has moved in the direction from the first side toward the second side with respect to the roller support portion, a distance between the shaft receiving portion and the shaft presser portion is reduced, and the roller support portion and the detachment switching portion rotatably support the guide roller such that the guide roller is unable to be detached from the roller support portion, and   when the detachment switching portion has moved in the direction from the second side toward the first side with respect to the roller support portion, the distance between the shaft receiving portion and the shaft presser portion is increased, and the roller support portion and the detachment switching portion allow the guide roller to be detachable from the roller support portion.   
     
     
         6 . The packaging device according to  claim 2 , wherein
 the second movement portion is a second support portion which supports the guide roller that is detached from the first support portion, and the second movement portion is configured to move along the second path.   
     
     
         7 . The packaging device according to  claim 1 , further comprising;
 a cutting portion that cuts, in a width direction, the film located on the second side of the base in a state in which the second movement portion has moved the first guide portion to the downstream side in the conveyance direction.   
     
     
         8 . The packaging device according to  claim 1 , further comprising:
 a second guide portion which is located in a position where the first path and the second path intersect with each other, and which guides the film, which extends from a supply source of the film to the first guide portion, to the upstream side in the conveyance direction in a state in which the second movement portion has moved the first guide portion to the downstream side in the conveyance direction.   
     
     
         9 . The packaging device according to  claim 8 , wherein
 the first movement portion, along with the first guide portion and the second guide portion, moves from the first side to the second side along the first path, and   the first movement portion that has moved to the second side disposes the second guide portion in the position at which the first path and the second path intersect with each other.   
     
     
         10 . The packaging device according to  claim 1 , further comprising:
 a clamping portion that holds an edge on the second side of the film, on the second side of the conveyance path.   
     
     
         11 . The packaging device according to  claim 10 , wherein
 the clamping portion holds the edge on the second side of the film until a downstream side edge in the conveyance direction of the base, which is conveyed from the upstream side toward the downstream side in the conveyance direction for the film, comes into contact with the film, and   when the base is conveyed further to the downstream side in the conveyance direction, the film is separated from the clamping portion.   
     
     
         12 . The packaging device according to  claim 1 , further comprising:
 a detection portion that detects at least one of the base and the article,   wherein   the conveyance portion conveys the base when the detection portion detects at least one of the base and the article, and   the conveyance portion stops the conveyance of the base when the detection portion does not detect the base and the article.