JP6256389B2 - Packaging equipment - Google Patents

Description

  The present invention relates to a packaging device that covers at least a part of an article with a film.

  There has been proposed a packaging apparatus that covers and wraps a part of an article with a film while the article is placed on a plate-like pedestal. For example, in the packaging apparatus described in Patent Document 1, first, a film is arranged by a user at a position that intersects a conveyance surface through which a pedestal passes during conveyance. The packaging apparatus holds the lower end portion of the film between the pedestal guide roller and the holding roller by bringing the holding roller close to the pedestal guide roller on the lower side of the conveyance path. The packaging device conveys the pedestal and the article from the upstream side toward the film. The film contacts the pedestal and the downstream side of the article, is pulled downstream, and is pressed against the article. Next, the packaging apparatus guides the film to the upstream side of the pedestal and the article by a guide roller that guides the film. Next, the packaging device conveys the pedestal and the article toward the upstream side. The film contacts the pedestal and the upstream side of the article, is pulled upstream, and is pressed against the article. As described above, the packaging apparatus presses the film against the article according to the conveyance of the pedestal and the article, and causes the film to adhere to the periphery of the article. Thereby, the article is packaged by the film.

JP 2014-97835 A

  In the packaging apparatus, the lower end portion of the film may not be held by the pedestal guide roller and the holding roller in a state where the holding roller is close to the pedestal guide roller. However, the above packaging apparatus has a problem that it cannot be determined whether the lower end portion of the film is held by the pedestal guide roller and the holding roller in a state where the holding roller is close to the pedestal guide roller.

  The objective of this invention is providing the packaging apparatus which can judge whether the lower end part of a film is hold | maintained by the base guide roller and the holding roller.

  The packaging device of the present invention is a packaging device that wraps an article with a film, and is mounted on a film roll around which the film is wound, and is disposed below the mounting portion and is fed out from the film roll. A holding mechanism that can be switched between a first state in which the lower end portion of the film is held and a second state in which the lower end portion of the film is released, and conveyance that passes between the mounting portion and the holding mechanism. A transport mechanism for moving the article along a path, and a feeding direction from the film roll mounted on the mounting unit toward the holding mechanism, or a force in a winding direction from the holding mechanism toward the film roll, An action mechanism that acts on the film, a first switching unit that switches the holding mechanism to the first state, and the holding mechanism is moved forward by the first switching unit. After being switched to the first state, a first winding means for applying a force in the winding direction to the film by the action mechanism, and a force in the winding direction to the film by the first winding means. And a first judging means for judging whether the lower end portion of the film is held by the holding mechanism depending on whether or not the moving speed of the film in a state of being held satisfies a predetermined condition. .

  In the packaging device of the present invention, the following processing is executed. First, the holding mechanism is switched to the first state. Next, a force in the winding direction is applied to the film. Here, when the lower end portion of the film is held by the holding mechanism, the movement of the film in the winding direction is restricted. On the other hand, when the film is not held by the holding mechanism, the movement of the film in the winding direction is not restricted. For this reason, the packaging apparatus holds the lower end of the film when the holding mechanism is switched to the first state when the moving speed of the film satisfies a predetermined condition with a force in the winding direction applied to the film. It can be determined that the mechanism holds. On the other hand, the packaging device can determine that the lower end of the film is not held by the holding mechanism when the moving speed of the film does not satisfy the predetermined condition.

  In the present invention, the first determination means may determine that the predetermined condition is satisfied when the moving speed of the film decreases. When the movement of the film in the winding direction is restricted according to the fact that the lower end of the film is held, the moving speed of the film when a force in the winding direction acts on the film is lowered. For this reason, the packaging apparatus can judge that the lower end part of a film is hold | maintained, when the moving speed of a film falls.

  In the present invention, the action mechanism includes a motor that applies a force in the winding direction to the film by rotating the film roll in a direction in which the film is wound around the film roll. The means may determine that the predetermined condition is satisfied when the rotational speed of the motor is reduced. In this case, the packaging device can determine that the lower end portion of the film is held when the rotational speed of the motor decreases.

  In the present invention, after the holding mechanism is switched to the first state by the first switching means, the first mechanism is provided with first feeding means for causing the force in the feeding direction to act on the film by the action mechanism. The winding means may cause the force in the winding direction to act on the film after the force in the feeding direction is applied to the film by the first feeding means. The film can be loosened between the film roll and the holding mechanism by applying a force in the unwinding direction before applying a force in the winding direction to the film. In this case, the packaging device can easily confirm the change in the moving speed of the film when a force in the winding direction is applied to the film. Therefore, the packaging device can appropriately determine whether the moving speed of the film satisfies the predetermined condition.

  In the present invention, the state determined by the first determination means that the predetermined condition is not satisfied is an amount of the amount fed from the film roll before the holding mechanism is switched to the first state by the first switching means. You may provide the notification means to notify a user, when the time required in order to wind up the said film continues. In this case, it is possible to notify the user that there is a possibility that all the film may be wound on the film roll in response to the movement of the film in the winding direction.

It is a perspective view of packaging device 1 (state where case 800 was equipped). It is a perspective view of packaging device 1 (state which removed case 800). 3 is a perspective view of a transport mechanism 50. FIG. 4 is a perspective view of a guide mechanism 39. FIG. 4 is a perspective view of a heating mechanism 86 and a rotation suppression mechanism 80. FIG. 2 is a block diagram showing an electrical configuration of the packaging device 1. FIG. It is a flowchart of a main process. It is a flowchart of an adjustment process. FIG. 6 is a diagram illustrating an operation state of a holding mechanism 70. It is a flowchart of a packaging process. It is a figure which shows a packaging process. It is a figure which shows a packaging process. It is a figure which shows a packaging process. It is a figure which shows a packaging process. It is a figure which shows a packaging process. It is a figure which shows a packaging process. It is a figure which shows a packaging process.

  Embodiments of the present invention will be described below with reference to the drawings. The packaging device 1 wraps the article 3 by covering the article 3 placed on the base 2 such as a mount with a film 24 and fixing the article 3 to the base 2. Hereinafter, packaging the article 3 in this manner is referred to as “packing the base 2 and the article 3”. The packaging device 1 conveys the pedestal 2 on which the article 3 is placed from the lower right side of FIG. 1 toward the upper left side, and wraps the pedestal 2 and the article 3. The upper side, the lower side, the left diagonal lower side, and the right diagonal upper side in FIG. 1 are referred to as the upper side, the lower side, the right side, and the left side of the packaging device 1, respectively. The diagonally lower right side and the diagonally upper left side in FIG. 1 are referred to as upstream and downstream in the transport direction, respectively.

<Case 800>
As shown in FIG. 1, the packaging device 1 includes a housing 800. The shape of the housing 800 is a substantially rectangular parallelepiped whose longitudinal direction is the vertical direction. The housing 800 includes an upper housing 801 and a lower housing 803. The upper housing 801 includes two standing portions 802A and a erection portion 802B. The two standing portions 802A extend upward from both left and right end portions of the lower housing 803, respectively. The erection part 802B is erected between the upper ends of the two erection parts 802A. A display unit 207 capable of displaying various types of information is provided on the right standing unit 802A.

  The two standing portions 802A cover side plate members 111 and 112 (see FIG. 2) described later from the right side and the left side, respectively. The erection part 802B covers a film roll 22 (see FIG. 2) described later from above. A portion surrounded by the lower housing 803, the two standing portions 802A, and the erection portion 802B forms an internal space of the housing 800. The internal space of the housing 800 communicates with the outside of the housing 800 through openings 805 formed on the upstream side and the downstream side of the housing 800. The shape of the lower housing 803 is a substantially rectangular parallelepiped with the left-right direction as the longitudinal direction. An operation unit 206 for the user to instruct the packaging apparatus 1 to start or stop the packaging operation is provided in the lower casing 803.

<Receivers 12, 13>
The cradle 12 extends in the horizontal direction from the upper end of the upstream side surface of the lower housing 803 toward the upstream side. The cradle 13 extends in the horizontal direction from the upper end of the downstream side surface of the lower housing 803 toward the downstream side. The shapes of the cradles 12 and 13 are box-like shapes that are substantially rectangular in plan view with the conveying direction as the longitudinal direction. The cradle 12 receives the pedestal 2 conveyed toward the opening 805 on the upper surface. The cradle 13 receives the pedestal 2 and the article 3 whose packaging has been completed on the upper surface. The leg portions 121 and 131 support the cradle 12 and 13 from below.

  The upper surface of the cradle 12 is referred to as “receiving surface 12A”, and the upper surface of the cradle 13 is referred to as “receiving surface 13A”. The receiving surfaces 12A and 13A are horizontal and form substantially the same plane. Therefore, the receiving surfaces 12A and 13A are flat surfaces that can smoothly convey the base 2. A portion where the pedestal 2 is transported on the receiving surfaces 12A and 13A is referred to as a “transport path 103” (see FIG. 11).

  As shown in FIG. 2, the packaging device 1 includes a bottom 10 and side plate members 111 and 112. The shape of the bottom 10 is a rectangular shape in plan view. The side plate member 111 extends in the upward vertical direction from the right end portion of the bottom portion 10. The side plate member 112 extends in the upward vertical direction from the left end portion of the bottom portion 10. Each shape of the side plate members 111 and 112 is a substantially rectangular plate shape whose longitudinal direction is the vertical direction. The inner surfaces of the side plate members 111 and 112 face each other. The cradle 12 is supported by end portions on the upstream side of the side plate members 111 and 112. The cradle 13 is supported by the downstream ends of the side plate members 111 and 112.

<Transport mechanism 50>
As shown in FIG. 3, endless belts 511 and 512 are provided at the right end and the left end of the cradles 12 and 13, respectively. Each of the belts 511 and 512 has teeth on the inner surface. The belt 511 is bridged between a pair of pulleys 52A and 52B. The pulley 52 </ b> A is rotatably provided on the upstream side of the right side surface of the cradle 12. The pulley 52 </ b> B is rotatably provided on the downstream side of the right side surface of the cradle 13. The pulleys 52A and 52B are in contact with the inside of the belt 511, and support the belt 511 in a rotatable manner. The belt 512 is stretched over a pair of pulleys 53A and 53B. The pulley 53 </ b> A is rotatably provided on the upstream side of the left side surface of the cradle 12. The pulley 53B is rotatably provided on the downstream side of the left side surface of the cradle 13. The pulleys 53A and 53B are in contact with the inside of the belt 512 and support the belt 512 rotatably.

  Portions of the outer surfaces of the belts 511 and 512 facing upward are exposed to the receiving surfaces 12A and 13A and extend in the transport direction. A conveying unit 60 is provided on each outer surface of the belts 511 and 512. The conveyance unit 60 includes a right conveyance unit 61 provided on the belt 511 and a left conveyance unit 62 provided on the belt 512. The right transport unit 61 protrudes in the vertical direction and the outward direction with respect to the outer surface of the belt 511. The left conveyance unit 62 protrudes in the vertical direction and the outward direction with respect to the outer surface of the belt 512. In the transport unit 60, the right transport unit 61 and the left transport unit 62 face each other in the left-right direction.

  The right transport unit 61 includes a first transport unit 61A and a second transport unit 61B. The first transport unit 61A and the second transport unit 61B are separated in the transport direction. In the first conveyance unit 61A, a portion of the upstream side surface that is close to the belt 511 is recessed downstream. The left transport unit 62 includes a first transport unit 62A and a second transport unit 62B. The first transport unit 62A and the second transport unit 62B are separated in the transport direction. In the first conveyance unit 62A, a portion of the upstream side surface close to the belt 512 is recessed downstream. The first transport units 61A and 62A hold a pedestal 2 described later from above. The second transport units 61B and 62B push the pedestal 2 upstream or downstream.

  The motor 222 (see FIG. 6) drives the pulleys 52B and 53B to rotate. When the motor 222 rotates the pulleys 52B and 53B in the counterclockwise direction when viewed from the right side, the belts 511 and 512 rotate in the counterclockwise direction. Accordingly, the transport unit 60 transports the base 2 from the upstream side to the downstream side, as will be described later. On the other hand, when the motor 222 rotates the pulleys 52B and 53B in the clockwise direction as viewed from the right side, the belts 511 and 512 rotate in the clockwise direction. Accordingly, the transport unit 60 transports the base 2 from the downstream side to the upstream side, as will be described later. Hereinafter, the rotation direction of the motor 222 and the belts 511 and 512 when the pedestal 2 is conveyed from the upstream side to the downstream side is referred to as “forward direction”, and the rotation direction opposite to the forward direction is referred to as “reverse direction”. The belts 511 and 512, the conveyance unit 60, and the motor 222 are collectively referred to as “conveyance mechanism 50”.

  In addition, the description of the rotation direction (clockwise or counterclockwise) in the following shall show the direction when the packaging apparatus 1 is seen from the right side, unless there is particular limitation.

<Action mechanism 20>
As shown in FIG. 2, the film roll 22 is detachably mounted on the inner side of each upper end portion of the side plate members 111 and 112. Hereinafter, the part inside each upper end part of the side plate members 111 and 112 and to which the film roll 22 is mounted is referred to as “film roll mounting part 11A”. The film roll 22 has a film 24 (see FIG. 1) and a substantially cylindrical winding shaft (not shown). The film 24 is wound around a winding shaft. A film gear 23B is provided on the right side surface of the winding shaft. The film gear 23B meshes with the connecting gear 651 from the upstream side with the film roll 22 mounted on the film roll mounting portion 11A.

  Rollers 654A and 654B (see FIG. 11 and the like) are provided on the upstream side of the film roll mounting portion 11A. The rollers 654A and 654B are columnar members that extend between the side plate members 111 and 112 in the left-right direction. The roller 654B is disposed on the downstream side with respect to the roller 654A. The rollers 654A and 654B are rotatably supported by the side plate members 111 and 112 on both sides in the left-right direction. The film 24 fed out from the film roll 22 is sandwiched from both sides in the transport direction by the rollers 654A and 654B.

  The rotational driving force of the motor 227 (see FIG. 6) is selectively transmitted to the connection gear 651 and the roller 654A. When the motor 227 rotates in a predetermined direction while the rotational driving force of the motor 227 is transmitted to the connection gear 651, the film gear 23B rotates counterclockwise. When the film gear 23 </ b> B rotates counterclockwise, the film 24 is wound around the film roll 22. Hereinafter, the rotation direction (predetermined direction) of the motor 227 when the film 24 is wound on the film roll 22 is referred to as a “first direction”.

  On the other hand, when the motor 227 rotates in the direction opposite to the first direction while the rotational driving force of the motor 227 is transmitted to the roller 654A, the roller 654A rotates counterclockwise. When the roller 654A rotates counterclockwise, the roller 654A feeds the film 24 sandwiched between the roller 654A from the film roll 22. Hereinafter, the rotation direction (the direction opposite to the first direction) of the motor 227 when the motor 227 is unwound from the film roll 22 is referred to as a “second direction”.

  The solenoid 16C (see FIG. 6) switches whether the rotational driving force of the motor 227 is transmitted to the connection gear 651 or the roller 654A. Hereinafter, the motor 227, the rollers 654A and 654B, the connecting gear 651, and the solenoid 16C are referred to as the “action mechanism 20”.

<Guiding mechanism 39>
As shown in FIG. 2, a carriage 349 that is driven by the rotation of the motor 221 is provided on the right side surface of the side plate member 111. The carriage 349 is connected to a support member 341 (see FIG. 4). A carriage 350 is provided on the left side surface of the side plate member 112. The carriage 350 is connected to a support member 342 (see FIG. 4).

  As shown in FIG. 4, the shapes of the support members 341 and 342 are symmetrical. Support members 341 and 342 are spaced apart in the left-right direction. Hereinafter, the support member 341 will be described, and the description of the support member 342 will be omitted. The support member 341 includes a base portion 341A, a first extension portion 341B, a second extension portion 341C, and a third extension portion 341D. The base portion 341A, the first extending portion 341B, the second extending portion 341C, and the third extending portion 341D are plate-shaped. The respective planes of the base portion 341A, the first extending portion 341B, the second extending portion 341C, and the third extending portion 341D face the left-right direction.

  The shape of the base portion 341A is substantially rectangular in a side view. The first extending portion 341B extends horizontally from the lower portion of the downstream end of the base portion 341A toward the downstream side. The shape of the first extending portion 341B is substantially rectangular in a side view. The second extending portion 341C extends horizontally from the upper portion of the downstream end of the base portion 341A toward the downstream side. The shape of the second extending portion 341C is substantially rectangular in a side view. The downstream end of the second extending portion 341C is disposed on the downstream side of the downstream end of the first extending portion 341B. The upper end of the first extending portion 341B and the lower end of the second extending portion 341C are spaced apart in the vertical direction to form a gap 3414 extending in the transport direction. The third extending portion 341D extends vertically upward from a portion on the upstream side of the upper end of the base portion 341A. The shape of the third extending portion 341D is substantially rectangular in a side view. A plurality of holes are formed in the base portion 341A and the third extending portion 341D in the vertical direction. Screws for connecting the support member 341 to the carriage 349 (see FIG. 2) are inserted through the plurality of holes.

  The base part 342A, the first extension part 342B, the second extension part 342C, and the third extension part 342D of the support member 342 are respectively the base part 341A, the first extension part 341B, and the second extension part of the support member 341. It corresponds to the installation part 341C and the third extension part 341D. A gap 3424 between the first extending part 342B and the second extending part 342C corresponds to a gap 3414 between the first extending part 341B and the second extending part 341C. Screws for connecting the support member 342 to the carriage 350 (see FIG. 2) are inserted through the plurality of holes of the base portion 342A and the third extending portion 342D. Hereinafter, the support members 341 and 342 are collectively referred to as “a pair of support members 34”. The bases 341A and 342A are collectively referred to as “a pair of bases 34A”. The first extending portions 341B and 342B are collectively referred to as “a pair of first extending portions 34B”. The second extending portions 341C and 342C are collectively referred to as “a pair of second extending portions 34C”.

  The guide rollers 30 (see FIG. 11), 31, 32 (see FIG. 11) are disposed between the downstream portions of the pair of first extending portions 34B. The right ends of the guide rollers 30 to 32 are supported by the first extending portion 341B. The left ends of the guide rollers 30 to 32 are supported by the first extending portion 342B. The guide roller 33 is disposed between the pair of base portions 34A. The right end of the guide roller 33 is supported by the base 341A. The left end of the guide roller 33 is supported by the base 342A. The erection member 35 is disposed in the upstream portion of the pair of second extending portions 34C. The left end of the erection member 35 is supported by the second extending portion 341C. The left end of the erection member 35 is supported by the second extending portion 342C.

  As shown in FIG. 11, the guide rollers 30 and 32 are arranged horizontally. The lower ends of the guide rollers 30 and 32 slightly protrude below the lower end of the first extending portion 342B. The guide roller 31 is disposed above the guide rollers 30 and 32. The upper end of the guide roller 31 slightly protrudes above the upper end of the first extending portion 342B. The guide roller 33 is disposed above the guide roller 31. The installation member 35 is disposed above the guide roller 33. Hereinafter, the pair of support members 34, the guide rollers 30 to 33, and the installation member 35 are referred to as a “guide mechanism 39”.

  As shown in FIG. 2, the motor 221 can move the guide mechanism 39 in the vertical direction via carriages 349 and 350. FIG. 11 shows a state in which the guide mechanism 39 is disposed at the uppermost position. In this state, of the support members 342 of the pair of support members 34, the third extending portion 342 </ b> D is disposed in the vicinity of the upstream side and the lower side of the film roll 22. The first extending portion 342 </ b> B and the second extending portion 342 </ b> C are disposed below the film roll 22. The guide rollers 30 to 33 and the erection member 35 are disposed below the film roll 22.

  FIG. 14 shows a state where the guide mechanism 39 is disposed at the lowest position. In this state, the first extending portion 342 </ b> B of the support members 342 of the pair of support members 34 is disposed below the conveyance path 103. The guide rollers 30 to 32 supported by the pair of first extending portions 34 </ b> B are disposed below the conveyance path 103. The guide roller 31 contacts the conveyance path 103 from below. The second extending portion 342C is disposed on the upper side of the first extending portion 342B with the conveyance path 103 interposed therebetween. The guide roller 33 and the erection member 35 are disposed on the upper side of the conveyance path 103. The gap 3424 (see FIG. 4) is arranged along the transport path 103. Hereinafter, as illustrated in FIG. 11, the movement path of the guide roller 30 accompanying the movement of the pair of support members 34 is referred to as “movement path 104”. A position where the conveyance path 103 and the movement path 104 intersect is referred to as an “intersection position 105”.

<Holding mechanism 70 (pedestal guide roller 71, holding roller 72)>
As shown in FIG. 2, a pedestal guide roller 71 extending in the left-right direction is provided on the upstream side of the portion sandwiched between the side plate members 111 and 112 (see FIG. 2) and below the conveyance path 103 (see FIG. 11 and the like). It is done. The pedestal guide roller 71 contacts the conveyance path 103 from below. The pedestal guide roller 71 supports the pedestal 2 conveyed from the upstream side to the downstream side along the conveyance path 103 from below between the cradles 12 and 13, and guides the pedestal 12 from the cradle 12 to the cradle 13. As shown in FIG. 5, a pair of plate-like members 70 </ b> B are disposed below the pedestal guide roller 71. The left and right sides of the pedestal guide roller 71 are rotatably supported by a pair of plate-like members 70B.

  A pair of holding members 78 are provided on the left and right outer sides of the pair of plate-like members 70B. The pair of holding members 78 can rotate with a projecting portion 70 </ b> D projecting from the pair of plate-like members 70 </ b> B to the left and right outside as a fulcrum. Of the pair of holding members 78, a holding roller 72 is provided on the side opposite to the side supported by the protrusion 70 </ b> D. The left and right ends of the holding roller 72 are rotatably supported by a pair of holding members 78. The pair of holding members 78 are rotated by a motor 226 (see FIG. 6). Due to the rotation of the pair of holding members 78, the holding roller 72 is close to the downstream side of the pedestal guide roller 71 (see FIG. 5), and the holding roller 72 is separated from the pedestal guide roller 71 (see FIG. 13 and the like). And switch to Hereinafter, a state in which the holding roller 72 is close to the downstream side of the base guide roller 71 is referred to as a “first state”. A state in which the holding roller 72 is separated from the pedestal guide roller 71 is referred to as a “second state”. The pedestal guide roller 71 and the holding roller 72 are collectively referred to as “holding mechanism 70”.

  As shown in FIG. 11, when the holding mechanism 70 is in the first state, the lower end portion of the film 24 fed out from the film roll 22 can be held between the holding roller 72 and the pedestal guide roller 71 and held. Become. On the other hand, when the holding mechanism 70 is in the second state, for example, as shown in FIG. 13, the lower end portion of the film 24 fed out from the film roll 22 is released from the holding roller 72 and the pedestal guide roller 71.

<Heating mechanism 86>
As shown in FIG. 5, a heating mechanism 86 is provided on the downstream side of the holding mechanism 70. The heating mechanism 86 includes five heating units 861, a holding member 862, and a pedestal member 863.

  Each of the five heating units 861 has a substantially rectangular parallelepiped shape. Each of the five heating units 861 has a heater 861A on the upper surface. The heater 861A is a resistance heating type heater that heats by passing an electric current. Each of the five heating units 861 has two protruding portions 861B that protrude from the downstream surface toward the downstream side. Each of the two protrusions 861B is arranged in the left-right direction.

  The holding member 862 is a substantially U-shaped member in a side view. The holding member 862 has a groove extending in the left-right direction. The length in the left-right direction of the holding member 862 is substantially the same as the length in the left-right direction of the cradle 12, 13 (see FIG. 2). The five heating units 861 are arranged inside the groove of the holding member 862. The five heating units 861 are aligned in the left-right direction. A plurality of long hole portions 862 </ b> A are provided in the plate-like member on the downstream side of the holding member 862. The plurality of long hole portions 862A are long holes that are long in the vertical direction. The plurality of long hole portions 862A are arranged in the left-right direction. Each of the two protruding portions 861B of the five heating units 861 enters the plurality of elongated hole portions 862A from the upstream side and protrudes to the downstream side. The five heating units 861 can move in the vertical direction by the length in the vertical direction of the plurality of elongated holes 862A. A plurality of springs (not shown) are connected to the lower side of the groove of the holding member 862 to urge the five heating units 861 upward. The upper surfaces of the five heating units 861 are arranged above the upper ends of the holding members 862.

  The base member 863 supports the holding member 862 from below. The pedestal member 863 has a pair of rack gears 863A at the left and right ends of the downstream side surface. The pair of rack gears 863 </ b> A extend in the vertical direction with their teeth facing downstream. A motor 223 (see FIG. 6) is provided on the downstream side of the base member 863. The pinion gear connected to the rotating shaft of the motor 223 meshes with the right side of the pair of rack gears 863A. As the motor 223 rotates, the base member 863 moves in the vertical direction. As a result, the holding member 862 and the five heating units 861 also move in the vertical direction. As shown in FIG. 11, when the five heating units 861 are arranged at the lowest position, the heaters 861 </ b> A on the respective upper surfaces are separated downward from the conveyance path 103. On the other hand, when the five heating units 861 are arranged at the uppermost position as shown in FIG. 12, the heaters 861 </ b> A on the respective upper surfaces are arranged slightly above the conveyance path 103.

  As shown in FIG. 5, the plate-like lid member 87 is arranged on the upper surface of the heater 861 </ b> A on each upper surface in a state where the five heating units 861 are arranged at the lowest position. The upstream end of the lid member 87 is rotatably supported by a pair of plate-like members 70B. The lid member 87 covers the heaters 861A on the upper surfaces from the upper side in a state where the five heating units 861 are disposed at the lowest position. The lid member 87 rotates in the process in which the five heating units 861 move from the lowest position to the highest position. The lid member 87 does not cover the heaters 861A on the upper surfaces of the five heating units 861 arranged in the uppermost position.

<Rotation suppression mechanism 80>
As shown in FIG. 5, the rotation suppression mechanism 80 is provided on the downstream side of the heating mechanism 86. The rotation suppression mechanism 80 includes plate-like members 84 and 85. The plate-like member 85 is a plate-like member fixed to the packaging device 1. The plate-like member 85 supports the pair of support rods 85A on both the left and right sides. The plate member 84 is disposed on the upper side of the plate member 85. The plate-like member 84 has holes that penetrate in the transport direction on both the left and right sides. Each of the pair of support rods 85 </ b> A is inserted through holes on the left and right sides of the plate-like member 84. The plate-like member 84 is movable in the transport direction along the pair of support bars 85A.

  The pair of support bars 82 extends horizontally from the plate-like member 84 to the upstream side. The stopper 81 is provided at the upstream end of the pair of support bars 82. The shape of the stopper 81 is a bar shape having a square cross-sectional shape. The stopper 81 extends in the left-right direction. The cam 83 is connected to a rotating shaft that extends upward from the left-right center of the plate-like member 85. A motor 224 (see FIG. 6) is provided below the plate member 85. The cam 83 rotates according to the rotation of the motor 224. The cam 83 comes into contact with the protruding portion 84A protruding upward from the left and right center of the plate-like member 84 from the upstream side. When the motor 224 rotates the cam 83, the plate member 84 moves in the transport direction. As the plate member 84 moves in the transport direction, the pair of support bars 82 and the stopper 81 also move in the transport direction.

  When the guide mechanism 39 is disposed at the lowest position and the stopper 81 moves to the upstream side (see FIG. 15), the stopper 81 is disposed at a position close to the guide roller 30 from the downstream side. In this case, the rotation of the guide roller 30 is restricted by the stopper 81. On the other hand, when the stopper 81 moves to the downstream side (see FIG. 17), the stopper 81 is separated to the downstream side with respect to the guide roller 30 even when the guide mechanism 39 is disposed at the lowest position.

<Cutting unit 77, sensor 205>
As shown in FIG. 16, a guide rail 74 extending in the left-right direction is provided below the intersection position 105. The cutting part 77 has a hole penetrating in the left-right direction. The cutting part 77 is movable in the left-right direction along the guide rail 74. The cutting portion 77 includes a blade portion 771 that protrudes upward and extends in the left-right direction. The motor 225 (see FIG. 6) moves the cutting portion 77 in the left-right direction along the guide rail 74.

  The sensor 205 (see FIG. 6) is provided in the internal space of the cradle 13. The sensor 205 is a non-contact sensor (reflective sensor) provided below the belt 512. The sensor 205 can detect a reflector provided on the belt 512.

<Pedestal 2>
The pedestal 2 will be described with reference to FIG. The pedestal 2 is produced by bending a substantially rectangular plate-shaped portion 90 with bent portions 911 and 912. The bent portions 911 and 912 are folds extending in the transport direction and arranged at intervals in the left-right direction. A portion sandwiched between the bent portions 911 and 912 in the plate-like portion 90 is referred to as a “first plate-like portion 905”. A portion of the plate-like portion 90 that stands up from the bent portion 911 is referred to as a “second plate-like portion 906”. A portion of the plate-like portion 90 that stands from the bent portion 912 is referred to as a “second plate-like portion 907”. The first plate-like portion 905 has a plurality of holes 927 formed at equal intervals along the bent portions 911 and 912. The plurality of holes 927 formed in the bent portion 911 and the plurality of holes 927 formed in the bent portion 912 are arranged in the left-right direction.

  The conveyance part 60 can be attached to each of the plurality of holes 927. Specifically, as shown in FIG. 1, when the operator places the pedestal 2 on the receiving base 12, each of the plurality of holes 927 has a pair of holes 927 on the downstream side in the transport direction, and the transport unit 60. Install. Thereby, the conveyance part 60 attached to a pair of hole 927 can convey the base 2 to the downstream of a conveyance direction.

<Electrical configuration>
The electrical configuration of the packaging device 1 will be described with reference to FIG. The packaging device 1 includes a CPU 201, a flash ROM 202, a RAM 203, a sensor 205, an operation unit 206, a display unit 207, a solenoid 16C, and a heater 861A. The CPU 201 controls the entire packaging device 1. The CPU 201 executes a program stored in the flash ROM 202 to execute a process of packaging the article 3 placed on the pedestal 2 with the film 24. The flash ROM 202 stores programs and the like for various processes to be described later executed by the CPU 201.

  The packaging device 1 includes drive units 211 to 217, motors 221 to 227, and encoders 232 and 237. The drive units 211 to 217 drive the motors 221 to 227 by outputting pulse signals to the motors 221 to 227, respectively. The motors 221 to 227 are DC motors. The encoder 232 outputs a number of pulse signals corresponding to the rotation of the motor 222. The encoder 237 outputs a number of pulse signals corresponding to the rotation of the motor 227. The CPU 201 is electrically connected to the flash ROM 202, the RAM 203, the sensor 205, the operation unit 206, the display unit 207, the solenoid 16C, the heater 861A, the drive units 211 to 217, and the encoders 232 and 237. Drive units 211 to 217 are electrically connected to motors 221 to 227, respectively.

<Main processing>
With reference to FIGS. 7-17, the main process (refer FIG.7, FIG.8, FIG.10) performed by CPU201 of the packaging apparatus 1 is demonstrated. When the packaging apparatus 1 is powered on, the CPU 201 starts the main process by reading and executing a program stored in the flash ROM 202. 11 to 17 are sectional views taken along the line AA in FIG.

As shown in FIG. 7, the CPU 201 initializes the state of the packaging device 1 (S1). Specifically, it is as follows. The CPU 201 arranges the guide mechanism 39 at the top (see FIG. 11). The CPU 201 rotates the belts 511 and 512 (see FIG. 11) of the transport mechanism 50 until the sensor 205 (see FIG. 6) detects the reflecting plate, and the transport unit from the receiving surface 12A (see FIG. 3) of the cradle 12. 60 is projected upward (see FIG. 11). The CPU 201 lowers the heating mechanism 86 and places it at the lowest position. The heaters 861A (see FIG. 5) of the five heating units 861 (see FIG. 5) are separated downward from the transport path 103 (see FIG. 11). The CPU 201 moves the stopper 81 downstream (see FIG. 11). CPU 201
The solenoid 16C is driven so that the rotational driving force is transmitted to the connecting gear 651 (see FIG. 2). The CPU 201 swings the pair of holding members 78 and separates the holding roller 72 from the pedestal guide roller 71 to switch the holding mechanism 70 to the second state (FIG. 9A, arrow 175A).

  The CPU 201 initializes the variables stored in the RAM 203 by setting the first rotation speed, the second rotation speed, and the previous rotation speed to 0. The first rotation speed corresponds to the rotation speed when the motor 227 rotates in the first direction when the film 24 is wound around the film roll 22. The second rotation speed corresponds to the rotation speed when the motor 227 rotates in the second direction when the film 24 is unwound from the film roll 22. The previous rotation speed is used to determine whether the rotation speed per unit time in the second direction of the motor has decreased.

  The CPU 201 starts a process of updating the second rotation number stored in the RAM 203 based on the pulse signal output from the encoder 237 when the motor 227 rotates in the second direction (S11). Specifically, when the CPU 201 detects a pulse signal output from the encoder 237 in response to the rotation of the motor 227 in the second direction, the CPU 201 specifies the number of rotations of the motor 227 based on the detected pulse signal, Stored as the second rotational speed.

  The user manually unwinds the film 24 from the film roll 22 and sandwiches the film 24 from both sides in the transport direction with the rollers 654A and 654B. The user further manually unwinds the film 24 from the film roll 22 and arranges the film 24 on the upstream side of the guide roller 33. The user further manually unwinds the film 24 from the film roll 22 and arranges the lower end of the film 24 below the transport path 103 (see FIG. 9) and downstream of the pedestal guide roller 71 (FIG. 9). (A), arrow 175B). When the film roll 22 rotates in response to the film 24 being unwound from the film roll 22, the motor 227 rotates in the second direction. The CPU 201 specifies the rotational speed of the motor 227 based on the pulse signal output from the encoder 237 when the motor 227 rotates in the second direction, and updates the second rotational speed.

  The user places the pedestal 2 on the cradle 12 (see FIG. 11). The pedestal 2 is positioned by the transport unit 60. The side 901 of the first plate-like portion 905 of the base 2 is disposed on the downstream side, and the side 902 is disposed on the upstream side. The article 3 is placed on the first plate-like portion 905 of the base 2 (see FIG. 11).

  The CPU 201 determines whether or not an input operation for notifying the packaging device 1 of being ready is detected via the operation unit 206 (S13). If the CPU 201 determines that no input operation is detected (S13: NO), the process returns to S13. When the CPU 201 determines that an input operation has been detected (S13: YES), the pair of holding members 78 are swung (S15), and the holding roller 72 is brought close to the downstream side of the pedestal guide roller 71 (see FIG. 11). Thus, the holding mechanism 70 is switched to the first state (FIG. 9B, arrow 175C). The lower end portion of the film 24 fed out from the film roll 22 is sandwiched and held from both sides in the transport direction by the pedestal guide roller 71 and the holding roller 72 (FIG. 9B).

  The CPU 201 determines, based on the second rotation number, whether the motor 227 has rotated in the second direction after starting the update of the second rotation number in the process of S11 (S17). When the second rotational speed is 0 (S17: NO), the CPU 201 determines that the film 24 is not fed out from the film roll 22 after the process of S11 is executed. In this case, the CPU 201 advances the process to S31. When the second rotational speed is 1 or more (S17: YES), the CPU 201 determines that the film 24 has been unwound from the film roll 22 after the process of S11 is executed. In this case, the CPU 201 advances the process to S19.

  The CPU 201 calculates the monitoring time T by dividing the second rotational speed by the predetermined rotational speed V1 (unit: rpm) of the motor 227 (S19). The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the roller 654A (see FIG. 2). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the second direction at the rotation speed V0 (S21). The drive unit 217 rotates the motor 227 in the second direction. The roller 654A rotates and feeds the film 24 sandwiched between the rollers 654B from the film roll 22. The film 24 fed out from the film roll 22 moves in the direction from the film roll mounting portion 11A side toward the holding mechanism 70 side (FIG. 9B, arrow 175D). Hereinafter, the direction from the film roll mounting portion 11A side toward the holding mechanism 70 side is referred to as “feeding direction”. When the CPU 201 determines that the motor 227 has rotated in the second direction by the number of rotations C1, the CPU 201 controls the drive unit 217 to stop the rotation of the motor 227. The distance that the film 24 moves in the feeding direction in response to the rotation of the motor 227 in the second direction by the number of rotations C1 is about 2 cm.

  The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the connecting gear 651 (see FIG. 2). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the first direction at the rotation speed V1 (S23). The drive unit 217 rotates the motor 227 in the first direction. The film roll 22 rotates and winds up the film 24. The film 24 fed out from the film roll 22 moves in the direction from the holding mechanism 70 side toward the film roll mounting portion 11A side (FIG. 9C, arrow 175E). Hereinafter, the direction from the holding mechanism 70 side toward the film roll mounting portion 11A side is referred to as “winding direction”.

  Here, the motor 227 moves in the first direction in accordance with the control of the drive unit 217 until the film 24 fed out from the film roll 22 by the process of S21 is completely wound around the film roll 22 by the process of S23. Rotate. In this case, the encoder 237 outputs a pulse signal corresponding to the rotation of the motor 227 in the first direction. The film 24 moves in the winding direction at a speed corresponding to the rotational speed of the film roll 22 (FIG. 9C, arrow 175E). On the other hand, since the film 24 fed out by the process of S21 is all wound around the film roll 22 by the process of S23, the lower end portion of the film 24 is held by the pedestal guide roller 71 and the holding roller 72. Even if the part 217 controls, the motor 227 does not rotate in the first direction. For this reason, the encoder 237 does not output a pulse signal. Since the film roll 22 does not rotate, the film 24 does not move in the winding direction.

  The CPU 201 detects the pulse signal output from the encoder 237 after the process of S23. The CPU 201 acquires the number of rotations per unit time in the first direction of the motor 227 as the current number of rotations. The CPU 201 determines whether the acquired current rotation speed is smaller than the previous rotation speed stored in the RAM 203 (S25). Note that the obtained number of rotations of the motor 227 per unit time corresponds to the moving speed of the film 24 in the winding direction. That is, the CPU 201 determines the moving speed of the film 24 in the winding direction based on the number of rotations of the motor 227 in the first direction per unit time.

  When the process of S25 is executed first, since the previous rotation speed is set to 0 by the initialization process of S1, the CPU 201 determines that the current rotation speed is equal to or higher than the previous rotation speed (S25). : NO). The CPU 201 sets the current rotation speed as the previous rotation speed and updates the previous rotation speed. CPU201 advances processing to S37. The CPU 201 determines whether the elapsed time from the start of the process of S23 is equal to or longer than the monitoring time T calculated by the process of S19 (S37). When the elapsed time is less than the monitoring time T (S37: NO), the CPU 201 returns the process to S25. On the other hand, when the processing of S25 is executed after the second time, the CPU 201 newly acquires the current rotational speed and determines whether the current rotational speed is smaller than the previous rotational speed updated by the previous processing of S25 ( S25). When it is determined that the current rotational speed is equal to or higher than the previous rotational speed (S25: NO), the CPU 201 advances the process to S37.

  CPU201 advances a process to S39, when the elapsed time after the process of S23 is more than the monitoring time T (S37: YES). The CPU 201 stops the rotation in the first direction of the motor 227 started by the process of S23 (S39). The winding operation of the film 24 around the film roll 22 is stopped. In this case, the film roll 22 has moved in the winding direction even though the length of the film 24 that has been manually drawn out by the user has been wound around the film roll 22 by the process of S23. . In this case, the lower end portion of the film 24 may be detached from the holding mechanism 70. Further, there is a possibility that all the film 24 is wound on the film roll 22. The CPU 201 displays an error screen for notifying that there is a possibility that the lower end portion of the film 24 is detached from the holding mechanism 70 and that the film 24 may be completely wound on the film roll 22. It is displayed on 207 (S41). CPU201 returns processing to S11.

  If the CPU 201 determines that the current rotational speed is smaller than the previous rotational speed before the elapsed time from the start of the processing of S23 becomes equal to or longer than the monitoring time T (S25: YES), the winding direction of the film 24 It is determined that the moving speed of In this case, the film 24 is held by the holding mechanism 70. The CPU 201 stops the rotation in the first direction of the motor 227 started by the process of S23 (S27). The winding operation of the film 24 around the film roll 22 is stopped. CPU201 performs adjustment processing (refer to Drawing 8) (S29).

  The adjustment process will be described with reference to FIG. The CPU 201 swings the pair of holding members 78 (S51) and separates the holding roller 72 from the pedestal guide roller 71 to switch the holding mechanism 70 to the second state (FIG. 9D, arrow 175F). The pedestal guide roller 71 and the holding roller 72 release the lower end portion of the film 24. The distance between the pedestal guide roller 71 and the holding roller 72 when the pair of holding members 78 is swung by the process of S51 is the pedestal guide roller 71 when the initialization process is performed by the process of S1. And the distance between the holding roller 72 and the holding roller 72 (see FIG. 9A).

  The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the connecting gear 651 (see FIG. 2). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the first direction at the rotation speed V2 (S53). The film 24 is released from the pedestal guide roller 71 and the holding roller 72 by the process of S51. For this reason, the drive unit 217 rotates the motor 227 in the first direction. The film roll 22 rotates and winds up the film 24. The film 24 moves in the winding direction (FIG. 9 (d), arrow 175G). When the CPU 201 determines that the motor 227 has rotated in the first direction by the number of rotations C2, the CPU 201 controls the drive unit 217 to stop the rotation of the motor 227. The distance that the film 24 moves in the winding direction in response to the rotation of the motor 227 in the first direction by the number of rotations C2 is about 1 cm.

  The CPU 201 swings the pair of holding members 78 (S55) and brings the holding roller 72 close to the downstream side of the pedestal guide roller 71 (FIG. 9 (e), arrow 175H), whereby the holding mechanism 70 is in the first state. Switch to. Here, in response to the movement of the film 24 in the winding direction by the process of S53, the lower end of the film 24 moves to the upper side of the conveyance path 103, in other words, to the upper side with respect to the downstream side of the pedestal guide roller 71. The case (see FIG. 9E) is taken as an example. In this case, even if the holding mechanism 70 is switched to the first state by the process of S55, the base guide roller 71 and the holding roller 72 do not sandwich the lower end portion of the film 24 therebetween. On the other hand, after the film 24 is moved in the winding direction by the process of S53, the lower end portion of the film 24 is disposed below the conveyance path 103, in other words, below the downstream side of the pedestal guide roller 71. An example is given below. In this case, in response to the holding mechanism 70 being switched to the first state by the process of S55, the base guide roller 71 and the holding roller 72 hold the lower end portion of the film 24 therebetween.

  The CPU 201 sets 0 as the first rotation number stored in the RAM 203. The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the connecting gear 651 (see FIG. 2). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the first direction at the rotation speed V3 (S57). Here, when the lower end portion of the film 24 is not held by the holding mechanism 70 (see FIG. 9E), the driving unit 217 rotates the motor 227 in the first direction. The film roll 22 rotates and winds up the film 24. The film 24 moves in the winding direction (FIG. 9 (e), arrow 175I). When the CPU 201 determines that the motor 227 has rotated in the first direction by the number of rotations C2, the CPU 201 controls the drive unit 217 to stop the rotation of the motor 227. The film 24 moves about 1 cm in the winding direction. On the other hand, when the lower end portion of the film 24 is held by the holding mechanism 70, the movement of the film 24 in the winding direction is restricted. The drive unit 217 cannot rotate the motor 227 in the first direction. In this case, the film roll 22 does not rotate and the film 24 does not move in the winding direction.

  After the process of S57, the CPU 201 specifies the rotation speed of the motor 227 based on the pulse signal output from the encoder 237 when the motor 227 rotates in the first direction, and stores it as the first rotation speed. The CPU 201 determines whether the film 24 has moved in the winding direction after the process of S57 based on the first rotation speed (S59). When the first rotation speed is 0, the CPU 201 determines that the film 24 has not moved in the winding direction by the process of S57 (S59: NO). In this case, the lower end portion of the film 24 is held by the holding mechanism 70 in accordance with the process of S55. The CPU 201 returns the process to S51. The CPU 201 repeats the processes of S51 to S57 until the lower end of the film 24 is not held by the holding mechanism 70 by the process of S55 while moving the film 24 in the winding direction by about 1 cm by the processes of S53 and S57. (FIGS. 9D and 9E).

  When the first rotational speed is 1 or more, the CPU 201 determines that the film 24 has moved in the winding direction after the process of S57 (S59: YES). In this case, the lower end portion of the film 24 is not held by the holding mechanism 70 by the process of S55 (FIG. 9E). In addition, since the film 24 is moved in the winding direction by about 1 cm by the processing of S51 and S53 (FIG. 9D, arrow 175G) (FIG. 9E, arrow 175I), the lower end of the film 24 is In the vicinity of the upper side of the pedestal guide roller 71 and the holding roller 72, specifically, in a region within about 2 cm above the pedestal guide roller 71 and the holding roller 72. CPU201 advances processing to S61.

  The CPU 201 swings the pair of holding members 78 (S61) and separates the holding roller 72 from the pedestal guide roller 71 to switch the holding mechanism 70 to the second state (FIG. 9 (f), arrow 175J). The distance between the pedestal guide roller 71 and the holding roller 72 when the pair of holding members 78 is swung by the process of S61 is the pedestal guide roller 71 when the initialization process is performed by the process of S1. And the distance between the holding roller 72 and the holding roller 72 (see FIG. 9A).

  The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the roller 654A (see FIG. 2). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the second direction at the rotation speed V4 (S63). The drive unit 217 rotates the motor 227 in the second direction. The roller 654A rotates and feeds the film 24 sandwiched between the rollers 654B from the film roll 22. The film 24 moves in the feeding direction (FIG. 9 (f), arrow 175K). When the CPU 201 determines that the motor 227 has rotated in the second direction by the number of rotations C3, the CPU 201 controls the driving unit 217 to stop the rotation of the motor 227. The distance that the film 24 moves in the feeding direction in response to the rotation of the motor 227 in the second direction by the number of rotations C3 is about 4 cm.

  The CPU 201 swings the pair of holding members 78 (S65) and brings the holding roller 72 close to the downstream side of the pedestal guide roller 71, thereby switching the holding mechanism 70 to the first state (FIG. 9G, arrow). 175L). Here, a case where the lower end portion of the film 24 moves to the lower side with respect to the downstream side of the pedestal guide roller 71 in accordance with the movement of the film 24 in the feeding direction by the process of S63 will be described as an example. In this case, in response to the holding mechanism 70 being switched to the first state by the process of S65, the base guide roller 71 and the holding roller 72 hold the lower end portion of the film 24 therebetween. On the other hand, the case where the lower end part of the film 24 is arranged on the upper side with respect to the downstream side of the pedestal guide roller 71 after moving the film 24 in the feeding direction by the process of S63 will be described as an example. In this case, even if the holding mechanism 70 is switched to the first state by the process of S65, the base guide roller 71 and the holding roller 72 do not sandwich the lower end portion of the film 24 therebetween.

  The CPU 201 sets 0 as the first rotation number stored in the RAM 203. The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the connecting gear 651 (see FIG. 2). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the first direction at the rotation speed V5 (S67). Here, when the lower end portion of the film 24 is not held by the holding mechanism 70, the driving unit 217 rotates the motor 227 in the first direction. The film roll 22 rotates and winds up the film 24. The film 24 moves in the winding direction. When the CPU 201 determines that the motor 227 has rotated in the first direction by the number of rotations C4, the CPU 201 controls the drive unit 217 to stop the rotation of the motor 227. The distance that the film 24 moves in the winding direction in response to the rotation of the motor 227 in the first direction by the number of rotations C4 is about 4 cm. On the other hand, when the lower end portion of the film 24 is held by the holding mechanism 70 (see FIG. 9G), the movement of the film 24 in the winding direction is restricted. The drive unit 217 cannot rotate the motor 227 in the first direction. In this case, the film roll 22 does not rotate and the film 24 does not move in the winding direction.

  After the process of S67, the CPU 201 specifies the rotational speed of the motor 227 based on the pulse signal output from the encoder 237 when the motor 227 rotates in the first direction, and stores it as the first rotational speed. The CPU 201 determines whether the film 24 has moved in the winding direction by the process of S67 based on the first rotation speed (S69). When the first rotational speed is 1 or more, the CPU 201 determines that the film 24 has moved in the winding direction by the process of S57 (S59: YE3S). In this case, the lower end portion of the film 24 is not held by the holding mechanism 70 by the process of S65. The CPU 201 returns the process to S61. The CPU 201 places the holding mechanism 70 in the second state by the process of S61. The CPU 201 moves the film 24 in the feeding direction by about 4 cm by the process of S63. The CPU 201 places the holding mechanism 70 in the first state by the process of S65. The CPU 201 moves the film 24 in the winding direction by about 4 cm by the process of S67. CPU201 repeats the process of S61-S67 until the lower end part of the film 24 is hold | maintained by the holding mechanism 70 by the process of S67. When the first rotational speed is 0, the CPU 201 determines that the film 24 has not moved in the winding direction after the process of S67 (S69: NO). In this case, the lower end portion of the film 24 is held by the holding mechanism 70 in accordance with the process of S65. The CPU 201 ends the adjustment process and returns the process to the main process (see FIG. 7).

  In the above case, the lower end portion of the film 24 is held by the holding mechanism 70 by the process of S65 (see FIG. 9G). Further, since the film 24 is moved in the feeding direction by about 4 cmn by the process of S63, the lower end portion of the film 24 is near the lower side of the pedestal guide roller 71 and the holding roller 72, specifically, the pedestal guide roller 71. And it is the state arrange | positioned in the area | region within about 4 cm below with respect to the holding roller 72. FIG. Hereinafter, the length of the film 24 disposed below the pedestal guide roller 71 and the holding roller 72, in other words, of the lower end portion of the film 24 from the portion sandwiched between the pedestal guide roller 71 and the holding roller 72. The length up to is called "surplus length".

  As shown in FIG. 7, after the adjustment process (S29) is finished, the CPU 201 determines whether or not a packaging start instruction is input (S31). CPU201 returns a process to S31, when the instruction | indication of a packaging start is not input (S31: NO). When the user inputs a packaging start instruction via the operation unit 206, the CPU 201 determines that a packaging start instruction has been input (S31: YES). CPU201 performs packaging processing (refer to Drawing 10) (S33).

  The packaging process will be described with reference to FIG. The CPU 201 drives the solenoid 16C so that the rotational driving force is transmitted to the roller 654A (see FIG. 2). The CPU 201 rotates the motor 227 in the second direction and moves the film 24 in the feeding direction by the rollers 654A and 654B (S101). The CPU 201 continues the control of feeding the film 24 by rotating the motor 227 in the second direction until the process of S117 described later. As shown in FIG. 11, the film 24 is loosened in response to the film 24 being fed from the film roll 22 by the rollers 654A and 654B and moving in the feeding direction (arrow 171).

  The CPU 201 rotates the motor 222 in the forward direction, and rotates the belts 511 and 512 in the forward direction (the direction of the arrow 181 in FIG. 11). The transport unit 60 transports the base 2 from the upstream side to the downstream side along the transport path 103 (S103). The downstream end (side 901) of the first plate-like portion 905 of the base 2 contacts the film 24, and then passes over the holding roller 72 (arrow 182 in FIG. 12). The side 901 of the first plate-like portion 905 of the base 2 pushes the film 24 to the downstream side. The side 901 of the first plate-like portion 905 of the base 2 approaches the movement path 104 from the upstream side and passes above the five heating units 861 (see FIG. 12). When the film 24 is pushed downstream by the side 901 of the first plate-like portion 905 of the pedestal 2, the lower end portion of the film 24 goes around the lower surface of the first plate-like portion 905 of the pedestal 2.

  The CPU 201 specifies, from the output signal from the encoder 232, whether or not the side 901 of the first plate-like portion 905 of the base 2 has moved downstream by a predetermined distance with respect to the upper position of the five heating units 861. Judgment is made based on the number of rotations of the motor 222. When the CPU 201 determines that the side 901 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance from the upper position of the five heating units 861, the CPU 201 stops driving the motor 222 and stops the pedestal 2. The downstream conveyance is stopped.

  CPU201 drives motor 223 and raises heating mechanism 86 (S105). After the heating mechanism 86 is placed in the uppermost position, the CPU 201 stops driving the motor 223 and stops the heating mechanism 86 from rising. As shown in FIG. 12, when the heating mechanism 86 is raised to the top (arrow 183), the upper side of the five heating units 861 sandwiches the film 24 between the lower surface of the first plate-like portion 905 of the base 2. It becomes a state. As shown in FIG. 10, the CPU 201 heats the heater 861A (S107). The heater 861A heats and melts the end of the film 24. The end of the melted film 24 is welded to the vicinity of the side 901 in the lower surface of the first plate-like portion 905 of the base 2. The CPU 201 stops the heating of the heater 861A after a predetermined time has elapsed since the heating of the heater 861A was started.

  The CPU 201 drives the motor 223 to lower the heating mechanism 86 (S109, arrow 184 (see FIG. 13)). The upper sides of the five heating units 861 are separated from the conveyance path 103. When the CPU 201 determines that the heating mechanism 86 has moved to the lowest position, the CPU 201 stops driving the motor 223 and stops the lowering of the heating mechanism 86.

  As shown in FIG. 10, the CPU 201 drives the motor 226 to swing the pair of holding members 78 (S111), and sets the holding mechanism 70 to the second state. As shown in FIG. 13, the pair of holding members 78 swings in the direction of the arrow 185, whereby the holding roller 72 is separated downward from the pedestal guide roller 71, and the end of the film 24 is released. As shown in FIG. 10, the CPU 201 rotates the motor 222 in the forward direction so that the belts 511 and 512 rotate in the forward direction, and transports the base 2 to the downstream side (S113).

  As shown in FIG. 13, the end portion of the film 24 is moved to the downstream side with the movement of the pedestal 2 in a state where it is welded to the lower surface of the pedestal 2 (arrow 186). As the pedestal 2 moves downstream, the side 901 of the first plate-like portion 905 of the pedestal 2 and the downstream end of the article 3 come into contact with the film 24 and bend at the contact portion. The CPU 201 controls the driving unit 212 to continuously drive the motor 222 to continuously rotate the belts 511 and 512 in the forward direction. A side 902 of the first plate-like portion 905 of the base 2 crosses the intersection position 105 from the upstream side to the downstream side. The film 24 is disposed at a position covering the first plate-like portion 905 of the base 2 and the upper side of the article 3. The guide rollers 30 to 32 are arranged above the film 24 extending above the base 2 and the article 3.

  As shown in FIG. 10, the CPU 201 stops driving the motor 222 and stops the conveyance of the base 2. The CPU 201 drives the motor 221 to move the guide mechanism 39 to the lowest position (S115). The guide roller 30 moves from the uppermost side to the lowermost side along the movement path 104. In the course of movement, the guide rollers 30 and 32 come into contact with the film 24 disposed below from the upper side, and guide the film 24 downward along the movement path 104 (see arrow 187 and FIG. 14). The film 24 is pressed against the base 2 and the article 3 from above. As shown in FIG. 14, the guide roller 31 is in a state of being in contact with the conveyance path 103 from the lower side in a state of being disposed at the lowest position. The film 24 covers the first plate-like portion 905 of the base 2 and the downstream side, the upper side, and the upstream side of the article 3.

  As shown in FIG. 10, the CPU 201 drives the solenoid 16 </ b> C so that the rotational driving force is transmitted to the connecting gear 651 (see FIG. 2). The CPU 201 rotates the motor 227 in the first direction (S117). The film 24 is wound around the film roll 22 and moves in the winding direction (see arrow 172, FIG. 14). Tension acts on the film 24. Due to the tension acting on the film 24, the film 24 adheres to the base 2 and the article 3. The CPU 201 continues the control of winding the film 24 by rotating the motor 227 in the first direction until the processing of S123 described later is completed.

  The CPU 201 rotates the motor 222 in the reverse direction so that the belts 511 and 512 rotate in the reverse direction (S119). The pedestal 2 moves from the downstream side to the upstream side (see arrow 188, FIG. 14). The side 902 of the first plate-like portion 905 of the pedestal 2 contacts the film 24 and pushes it upstream. The side 902 of the first plate-like portion 905 of the pedestal 2 passes above the five heating units 861 and moves upstream. The film 24 is sandwiched between the lower surface of the first plate-like portion 905 of the base 2 and the guide roller 31. The film 24 goes around to the lower side of the base 2.

  The CPU 201 determines from the output signal from the encoder 232 whether the side 902 of the first plate-like portion 905 of the base 2 has moved upstream by a predetermined distance from the upper position of the five heating units 861. Judgment based on the number of rotations. When the CPU 201 determines that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance upstream from the upper position of the five heating units 861, the CPU 201 controls the driving unit 212 to control the motor 222. The drive is stopped and the conveyance of the base 2 is stopped.

  The CPU 201 drives the motor 224 to move the stopper 81 of the rotation suppression mechanism 80 to the upstream side (S121). As shown in FIG. 15, the guide roller 30 moved to the lowest position is disposed on the upstream side of the stopper 81 of the rotation suppression mechanism 80. When the stopper 81 moves upstream (arrow 189), the film 24 wound around the guide roller 30 is sandwiched between the stopper 81 and the guide roller 30 and cannot move. The CPU 201 stops the rotation of the motor 227 and stops the winding of the film 24 onto the film roll 22 (S123).

  The CPU 201 drives the motor 225 to move the cutting unit 77 from the left side to the right side (S125). The blade portion 771 cuts a portion of the film 24 between two portions that are in contact with the guide rollers 30 and 32. A portion of the film 24 that covers the first plate-like portion 905 and the article 3 of the base 2 is cut off from the film roll 22 side. As shown in FIG. 16, after the film 24 is cut, the cut end of the film 24 extending from the film roll 22 hangs down to the lower side of the pedestal guide roller 71.

  As shown in FIG. 10, the CPU 201 drives the motor 226 to swing the pair of holding members 78 (S127), and sets the holding mechanism 70 to the first state. As shown in FIG. 16, the pair of holding members 78 swings in the direction of the arrow 190. An end portion of the film 24 cut by the cutting portion 77 is sandwiched between the pedestal guide roller 71 and the holding roller 72.

  As shown in FIG. 10, the CPU 201 drives the motor 223 to raise the heating mechanism 86 (S129). After the heating mechanism 86 is placed at the uppermost position, the CPU 201 stops driving the motor 223 and stops the heating mechanism 86 from rising. With the heating mechanism 86 raised to the top (see arrow 191, FIG. 16), each heater 861 </ b> A of the five heating units 861 approaches the conveyance path 103 from below. The heater 861A sandwiches the film 24 between the base 2 and the heater 861A. The CPU 201 heats the heater 861A (S131). The heater 861 </ b> A heats the end portion of the film 24 cut by the cutting portion 77 to melt the film 24. The melted film 24 is welded in the vicinity of the side 902 of the first plate-like portion 905 of the base 2. The film 24 cut from the film roll 22 is in a state of covering the base 2 and the article 3. CPU201 stops heating of heater 861A.

  The CPU 201 drives the motor 223 to lower the heating mechanism 86 (S133, arrow 192 (see FIG. 17)). Each heater 861 </ b> A of the five heating units 861 is separated from the conveyance path 103. When the heating mechanism 86 moves to the lowest position, the CPU 201 stops the rotation of the motor 223 and stops the lowering of the heating mechanism 86.

  The CPU 201 drives the motor 224 to move the stopper 81 of the rotation suppression mechanism 80 to the downstream side (S137, arrow 193 (see FIG. 17)). The stopper 81 moves downstream and is separated from the guide roller 30. The CPU 201 rotates the motor 222 in the forward direction so that the belts 511 and 512 rotate in the forward direction. The pedestal 2 is conveyed downstream (S137, arrow 194 (see FIG. 17)). The pedestal 2 and the article 3 that have been packaged are conveyed downstream. The CPU 201 ends the packaging process and returns the process to the main process (see FIG. 7).

  As shown in FIG. 7, after the packaging process (S33) is completed, the CPU 201 determines whether an input operation for terminating the packaging operation has been detected via the operation unit 206 (S35). If the CPU 201 determines that an input operation is not detected (S35: NO), the process returns to S21. If the CPU 201 determines that an input operation for ending the packaging operation has been detected via the operation unit 206 (S35: YES), the CPU 201 ends the main process.

<Main effects of the above embodiment>
As described above, the CPU 201 of the packaging device 1 executes the following process. The CPU 201 switches the holding mechanism 70 to the first state (S15). In order to move the film 24 in the winding direction, the CPU 201 controls the driving unit 217 to rotate the motor 227 in the first direction (S23). Here, when the lower end portion of the film 24 is held by the holding mechanism 70, the movement of the film 24 in the winding direction is restricted. On the other hand, when the lower end portion of the film 24 is not held by the holding mechanism 70, the movement of the film 24 in the winding direction is not restricted. For this reason, when the CPU 201 determines that the current rotational speed of the motor 227 is smaller than the previous rotational speed while controlling the drive unit 217 (S25: YES), the holding mechanism 70 has been switched to the first state. Thus, it can be determined that the lower end of the film 24 is held. On the other hand, if the current rotation speed is equal to or higher than the previous rotation speed (S25: NO), the CPU 201 can determine that the lower end portion of the film 24 is not held by the holding mechanism 70.

  The CPU 201 determines whether the moving speed of the film 24 in the winding direction has decreased by comparing the current rotational speed of the motor 227 with the previous rotational speed. The reason is that when the lower end portion of the film 24 is held by the holding mechanism 70, the movement of the film 24 in the winding direction is restricted, so that the moving speed of the film 24 decreases. For this reason, when the current rotational speed is smaller than the previous rotational speed (S25: YES), the CPU 201 determines that the moving speed of the film 24 in the winding direction is decreasing, and the lower end portion of the film 24 holds the holding mechanism. 70 can be determined to be held.

  The CPU 201 rotates the motor 227 in the second direction and moves the film 24 in the feeding direction (S21) before rotating the motor 227 in the first direction and moving the film 24 in the winding direction (S23). Thereby, the CPU 201 can loosen the film 24 between the film roll 22 and the holding mechanism 70 before the process of S23 is executed. In this case, the CPU 201 can easily confirm the change in the moving speed of the film 24 when the motor 227 is rotated in the first direction and the film 24 is moved in the winding direction. Therefore, the CPU 201 can easily determine whether the moving speed of the film 24 has decreased based on the number of rotations of the motor 227 in the first direction.

  When the film 24 is unwound from the film roll 22 by the user before the holding mechanism 70 is switched to the first state by the process of S15, the CPU 201 acquires the rotational speed of the motor 227 in the second direction as the second rotational speed. To do. The CPU 201 divides the second rotational speed by the rotational speed V1 of the motor 227 when moving the film 24 in the winding direction by the process of S23, and calculates the monitoring time T (S19). The calculated monitoring time T corresponds to the time until the film 24 fed out from the film roll 22 by the user is completely wound on the film roll 22 in the process of S23. If the current rotational speed is equal to or higher than the previous rotational speed after the monitoring time T has elapsed after the CPU 201 starts moving the film 24 in the winding direction by the process of S23 (S37: YES), the motor 227 The rotation is stopped (S39), and an error screen for notifying that there is a possibility that all the film 24 is wound on the film roll 22 is displayed on the display unit 207 (S41). As a result, the CPU 201 can notify the user at the same time as suppressing the possibility that the film 24 is completely wound on the film roll 22.

  If the current rotational speed is smaller than the previous rotational speed (S25: YES), the CPU 201 starts the packaging process (S33). Thus, the CPU 201 can confirm whether the lower end portion of the film 24 is held by the holding mechanism 70 before starting packaging. When the CPU 201 determines that the lower end portion of the film 24 is held by the holding mechanism 70, the CPU 201 can appropriately wrap the article 3 by the packaging process. On the other hand, if the current rotation speed is equal to or higher than the previous rotation speed, the CPU 201 does not start packaging. Thereby, the CPU 201 can suppress the start of packaging in a state where the lower end portion of the film 24 may not be held by the holding mechanism 70. For this reason, when the heater 861A is moved to the uppermost position, it is possible to prevent the film 24 from being interposed between the base 2 and the heater 861A. Therefore, it is possible to suppress the heater 861A from being heated in a state where the film 24 is not interposed between the base 2 and the heater 861A.

  In the adjustment process, the CPU 201 switches the holding mechanism 70 to the first state (S51), controls the drive unit 217, and rotates the motor 227 in the first direction (S53). Next, the CPU 201 switches the holding mechanism 70 to the second state (S57) and controls the drive unit 217 to rotate the motor 227 in the first direction (S59). The CPU 201 repeats the above processing, so that the holding mechanism 70 in the first state can hold the lower end of the film 24 (see FIG. 9C) and cannot hold (see FIG. 9E). ). Next, the CPU 201 rotates the motor 227 in the second direction, moves the film 24 in the feeding direction (S63), and feeds the film 24 for the excess length from the film roll 22. The CPU 201 switches the holding mechanism 70 from the second state to the first state (S65). Thereby, the CPU 201 can adjust the surplus length from the portion held by the holding mechanism 70 to the tip of the lower end portion of the film 24 to the length of the film 24 fed out by the process of S63. As a result, the CPU 201 can adjust the length from the portion bonded to the downstream side of the pedestal 2 to the tip of the lower end of the film 24 wrapping the pedestal 2 and the article 3 so as to be an extra length.

  The CPU 201 switches the holding mechanism 70 to the first state after moving the excess length of the film 24 in the feeding direction by the process of S63 (S65). The CPU 201 controls the drive unit 217 to rotate the motor 227 in the second direction. When the film 24 does not move in the feeding direction (S69: NO), the CPU 201 determines that the holding mechanism 70 holds the film 24. Thereby, the CPU 201 confirms that the lower end portion of the film 24 is held by the holding mechanism 70 in a state where the packaging device has moved the extra length of the film 24 in the feeding direction, and is held. You can start packaging.

<Modification>
In the above, the packaging device 1 moved the film 24 in the feeding direction by rotating the roller 654A. On the other hand, the packaging apparatus 1 may unwind the film 24 from the film roll 22 by rotating the film roll 22 in a direction opposite to the rotation direction of the film 24 when the film 24 is wound around the film roll 22. . The packaging device 1 winds the film 24 around the film roll 22 by rotating the film roll 22. On the other hand, the packaging apparatus 1 may wind up the film 24 by rotating the roller 654A in the direction opposite to the rotation direction of the roller 654A when the film 24 is fed out from the film roll 22.

  In the above, the CPU 201 determines that the lower end portion of the film 24 is held by the holding mechanism 70 when the current rotation speed is smaller than the previous rotation speed by the process of S25 (S25: YES), and starts the packaging process. (S35). On the other hand, the CPU 201 may determine that the lower end portion of the film 24 is held by the holding mechanism 70 when the current rotation speed is smaller than the previous rotation speed by a predetermined value or more. Further, the CPU 201 may determine that the lower end portion of the film 24 is held by the holding mechanism when the state where the current rotational speed is smaller than the previous rotational speed continues for a predetermined time or longer. Moreover, CPU201 may judge that the lower end part of the film 24 is hold | maintained by holding | maintenance climate, when this rotation speed is smaller than a predetermined threshold value.

  The CPU 201 unwinds the film 24 from the film roll 22 by the process of S21 before winding the film 24 around the film roll 22 by the process of S23. On the other hand, the CPU 201 may execute the process of S23 without performing the process of S21. That is, the CPU 201 may start winding the film 24 without first feeding the film 24, and then compare the previous rotation speed with the current rotation speed.

  The CPU 201 rotates the motor 227 when winding the film 24 around the film roll 22 in S23 and the second rotation number when the motor 227 rotates in the second direction in response to the film 24 being fed out of the film roll 22. Based on the speed V1, the monitoring time T was calculated (S19). If the state where the current rotational speed is equal to or higher than the previous rotational speed has elapsed for the monitoring time T or longer (S37: YES), the CPU 201 displays an error screen on the display unit 207 (S41). On the other hand, the CPU 201 does not have to calculate the monitoring time T. For example, the CPU 201 may display an error screen on the display unit 207 when a state in which the current rotational speed is equal to or higher than the previous rotational speed has elapsed for a predetermined time or longer.

  After confirming that the lower end portion of the film 24 is held by the holding mechanism 70 (S25: YES), the CPU 201 executes adjustment processing (S29) to adjust the surplus length of the film 24. On the other hand, the CPU 201 may start the packaging process (S33) without executing the adjusting means.

  The CPU 201 may specify the length of the film 24 fed out from the film roll 22 based on the number of rotations of the motor 227 in the first direction and the second direction. In the adjustment process (S29), the CPU 201 may rotate the motor 227 in the first direction or the second direction so that the specified length of the film 24 becomes a predetermined length. The predetermined length may be a value obtained by adding a predetermined surplus length to the length from the film roll 22 to the holding mechanism 70. The CPU 201 may switch the holding mechanism 70 from the second state to the first state after adjusting the length of the film 24 fed from the film roll 22 to be a predetermined length.

  After confirming that the film 24 does not move when the motor is rotated in the first direction by the process of S67 (S69: YES), the CPU 201 ends the adjustment process and starts the packaging process (S33). On the other hand, the CPU 201 may start the packaging process (S33) without performing the processes of S67 and S69 after switching the holding mechanism 70 to the first state by the process of S65.

  Strictly speaking, the diameter of the film roll 22 varies depending on the amount of the film 24 remaining on the film roll 22. For this reason, the distance that the film 24 moves in the winding direction when the motor 227 rotates in the first direction also varies depending on the amount of the film 24 remaining on the film roll 22. On the other hand, the CPU 201 may calculate the diameter of the film roll 22 based on the total amount of the film 24 used. The CPU 201 may calculate the number of rotations in the first direction of the motor 227 necessary to move the film 24 having a desired length in the winding direction based on the calculated diameter of the film roll 22. When executing the processes of S23, S53, S57, and S67, the CPU 201 may rotate the motor 227 in the first direction based on the calculated number of rotations.

  In the above, the rotational speeds V0 to V5 may be the same or different. The rotation speeds C1 to C4 may be the same or different. The distance that the film 24 moves in the feeding direction in accordance with the rotation of the motor 227 in the second direction by the number of rotations C1 is not limited to about 2 cm, and may be another value. The distance that the film 24 moves in the winding direction in response to the rotation of the motor 227 in the first direction by the number of rotations C2 is not limited to about 1 cm, and may be another value. The distance that the film 24 moves in the feeding direction in response to the rotation of the motor 227 in the second direction by the number of rotations C3 is not limited to about 4 cm, and may be another value.

<Others>
The film roll mounting portion 11A is an example of the “mounting portion” in the present invention. The CPU 201 that performs the processes of S15 and S127 is an example of the “first switching means” in the present invention. The CPU 201 that performs the process of S23 is an example of the “first winding unit” in the present invention. The CPU 201 that performs the process of S25 is an example of the “first determination unit” in the present invention. The CPU 201 that performs the process of S33 is an example of the “packaging unit” in the present invention. The CPU 201 that performs the processing of S21 is an example of the “first feeding means” in the present invention. The CPU 201 that performs the process of S41 is an example of the “notification unit” in the present invention. The CPU 201 that performs the process of S29 is an example of the “adjustment unit” in the present invention. The CPU 201 that performs the processes of S51, S53, S55, and S57 is an example of the “second winding unit” in the present invention. The CPU 201 that performs the process of S61 is an example of the “second switching unit” in the present invention. The CPU 201 that performs the process of S63 is an example of the “second feeding means” in the present invention. The CPU 201 that performs the process of S65 is an example of the “third switching unit” in the present invention. The CPU 201 that performs the process of S67 is an example of the “third winding unit” in the present invention.

1: Packaging device 2: Pedestal 3: Article 11A: Film roll mounting part 16C: Solenoid 20: Action mechanism 22: Film roll 24: Film 39: Guide mechanism 50: Conveying mechanism 70: Holding mechanism 77: Cutting part 103: Conveying path 104: Movement route 105: Crossing position 201: CPU
207: Display unit

Claims (5)

A packaging device for packaging an article with a film,
A mounting part capable of mounting a film roll wound with the film;
A holding mechanism that is arranged below the mounting portion and can be switched between a first state in which the lower end of the film fed from the film roll can be held and a second state in which the lower end of the film is released;
A transport mechanism that moves the article along a transport path that passes between the mounting portion and the holding mechanism;
An action mechanism that causes the film to apply a force in a feeding direction from the film roll attached to the attachment unit toward the holding mechanism, or a winding direction from the holding mechanism toward the film roll;
First switching means for switching the holding mechanism to the first state;
After the holding mechanism is switched to the first state by the first switching means, a first winding means for applying a force in the winding direction to the film by the action mechanism;
The lower end of the film is held by the holding mechanism depending on whether or not the moving speed of the film in the state where the force in the winding direction is applied to the film by the first winding means satisfies a predetermined condition. And a first judging means for judging whether or not the packaging is performed. The first determination means includes
The packaging apparatus according to claim 1, wherein when the moving speed of the film decreases, it is determined that the predetermined condition is satisfied. The action mechanism is:
A motor that applies a force in the winding direction to the film by rotating the film roll in a direction in which the film is wound on the film roll;
The first determination means includes
The packaging device according to claim 2, wherein when the number of rotations of the motor decreases, it is determined that the predetermined condition is satisfied. After the holding mechanism is switched to the first state by the first switching means, the first mechanism is provided with first feeding means for causing the force in the feeding direction to act on the film by the action mechanism,
The first winding means causes the force in the winding direction to act on the film after the force in the feeding direction is applied to the film by the first feeding means. A packaging device according to any one of the above.   When the first determination means determines that the predetermined condition is not satisfied, the amount of the film rolled out from the film roll is wound before the first switching means switches the holding mechanism to the first state. The packaging apparatus according to any one of claims 1 to 4, further comprising notifying means for notifying a user when the time necessary for taking has continued.

Images