WO2016147990A1

WO2016147990A1 - Packaging device

Info

Publication number: WO2016147990A1
Application number: PCT/JP2016/057443
Authority: WO
Inventors: 高橋　俊博
Original assignee: ブラザー工業株式会社
Priority date: 2015-03-13
Filing date: 2016-03-09
Publication date: 2016-09-22
Also published as: JP2016169035A; JP6304080B2

Abstract

The CPU of this packaging device causes a holding mechanism (S1) to hold a film (S1). Once the film is held, the CPU causes a pedestal with an article mounted thereon to be conveyed to the downstream side (S9, S19). The CPU releases the film (S17). The CPU causes a guide part to move downward along a moving path (S21). Once the guide part is moved, the CPU causes the film to be taken up by a film roll (S23). The CPU causes the pedestal to be conveyed to the upstream side (S25). The CPU causes the film section which is contacting the guide part to be fixed to the guide part (S27). Once the film is fixed, the CPU causes the film to be cut (S351). The CPU causes the film to be paid out from the film roll at least for some period after the film has been fixed and before cutting of the film has ended (S31).

Description

Packaging equipment

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 device that covers and wraps a part of an article with a film while the article is placed on a plate-like pedestal. For example, the packaging device described in Patent Document 1 packages a base and an article with a film as follows. First, the packaging apparatus conveys the pedestal on which the article is placed from the upstream side to the downstream side in the conveyance direction. Next, the packaging apparatus moves a guide roller for guiding the film in a direction orthogonal to the transport direction. Next, the packaging device conveys the pedestal on which the article is placed from the downstream side toward the upstream side. As described above, the film is pressed against the article with a strength corresponding to the tension and is in close contact with the article. Next, a packaging apparatus cut | disconnects the part closely_contact | adhered to articles | goods among films from a film roll by a cutting part.

JP 2014-97835 A

In the packaging device described in Patent Document 1, when the film is cut by the cutting portion in a state where tension is applied, the force in the contraction direction is applied to the portion of the film that is closer to the film roll than the position cut by the cutting portion. Works. The film may move according to the force in the shrinking direction immediately after cutting. For this reason, the position of the film is not stable, and the next packaging operation may not be performed smoothly.

An object of the present invention is to provide a packaging apparatus capable of stabilizing a portion of a film on the side of a film roll with respect to a position cut by a cutting portion immediately after cutting.

The packaging device of the present invention is a packaging device for packaging a pedestal and an article placed on the pedestal with a film, and a film roll mounting unit capable of mounting a film roll around which the film is wound, A holding mechanism that is disposed below the film roll mounting portion and holds the film fed out from the film roll, and the pedestal relative to the conveyance path passing between the film roll mounting portion and the holding mechanism. A transport mechanism that moves, a guide section that is movable along a moving path that extends in a direction that intersects the transport path, and a first holding means that holds the film by the holding mechanism; After the film is held by the holding mechanism by the first holding means, the conveyance path and the movement path intersect each other. First moving means for relatively moving the pedestal by the transport mechanism until the upstream end of the pedestal arranged upstream from the difference position is arranged downstream from the intersecting position; A release means for releasing the holding of the film by the holding mechanism, and the first moving means to move the pedestal relative to each other, and then the guide portion is moved along the moving path from above the crossing position from above the crossing position. A second moving means for moving the film downward from the position; a winding means for winding the film around the film roll after moving the guiding portion by the second moving means; and the guiding by the second moving means. Third moving means for relatively moving the pedestal by the transport mechanism until the upstream end of the pedestal is arranged on the upstream side of the guide portion after moving the portion. After the pedestal is relatively moved by the third moving means, the fixing means for fixing the film in contact with the guiding portion to the guiding portion, and after the film is fixed by the fixing means, A cutting means for cutting the film between the guide portion and the film roll; and at least a part of the film after the film is fixed by the fixing means and before the film is cut by the cutting means. And a second holding means for holding the film by the holding mechanism after the cutting of the film by the cutting means is completed.

In the above packaging apparatus, the pedestal on which the article is placed is relatively moved along the conveyance direction, and the film is guided around the pedestal and the article by the guide unit. Next, the film is fixed to the guide portion. The film is then cut and separated from the film roll. Here, the packaging device unwinds the film from the film roll for at least a part of the period after the film is fixed to the guide portion until the film is cut. Thereby, when the film is cut, the tension of the portion of the film that is fed out from the film roll can be made smaller than that in the case where the film is not fed out. Therefore, when the film is cut, the force in the shrinking direction acting on the portion of the film extending from the film roll can be made smaller than when the film is not fed out. In this case, after the film is cut, the position of the portion of the film extending from the film roll is stabilized, and the film can be easily held by the holding mechanism. Therefore, the packaging apparatus can smoothly perform the next packaging process with the film held by the holding mechanism.

In the present invention, the feeding means may feed the film from the film roll for at least a part of the period from the start of the cutting of the film by the cutting means to the end thereof. In this case, the packaging device does not weaken the tension acting on the film when the cutting of the film is started by the cutting means. In this case, the packaging device can appropriately cut the film.

In the present invention, the feeding means includes the film roll for at least a part of a period after the film is fixed to the guide portion by the fixing means and before the cutting of the film by the cutting means is started. The film may be fed out from In this case, the packaging device can complete the feeding of the film from the film roll before the cutting of the film is started by the cutting means. Therefore, the packaging apparatus can suppress that a tension | tensile_strength acts on the part drawn | fed out from the film roll among the films at the time of the start of a film cutting | disconnection.

In the present invention, it comprises: a first specifying means for specifying the physical properties of the film; and a storage means for storing the physical properties in association with the amount of the film fed, wherein the feeding means is stored in the storage means. Of the feed amount, the film for the feed amount associated with the physical property specified by the first specifying unit may be fed. In this case, the packaging device can specify an appropriate feeding amount according to the physical properties of the film and can feed the film from the film roll. Therefore, the packaging device can optimize the tension acting on the film at the time of cutting.

In the present invention, the second specifying means for specifying the diameter of the film roll, the feed amount associated with the physical property specified by the first specifying means, and the diameter specified by the second specifying means And a third specifying means for specifying a rotation amount of a motor for rotating the film roll, wherein the feeding means rotates the motor by the rotation amount specified by the third specifying means. The film for the feeding amount may be fed from the film roll. In this case, the packaging device can feed out a film for a desired feeding amount from the film roll by specifying the number of rotations of the motor based on the diameter of the film roll.

In the present invention, a static elimination roller for neutralizing the film cut by the cutting means may be further provided. In this case, the packaging apparatus can suppress that the position of the cut | disconnected edge part among the films extended from a film roll after cutting | disconnection becomes unstable because the cut | disconnected film charges. Therefore, the packaging device can further stabilize the position of the film.

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 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 figure which shows the table 202A. It is a flowchart of a packaging process. It is a flowchart of a packaging process, Comprising: It is a continuation of FIG. 9A. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process.

Embodiments of the present invention will be described 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 diagonally lower side, and the right diagonal upper side in FIG. 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 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. The plane formed by the receiving

surfaces

12A and 13A can smoothly transport the pedestal 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. 10).

As shown in FIG. 2, the packaging device 1 includes a bottom portion 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 A is rotatably provided on the upstream side of the right side surface of the cradle 12. The pulley 52 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 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 conveying 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. 7) 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 a “forward direction”. The direction of rotation 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) below indicates the direction when the packaging device 1 is viewed from the right side, unless otherwise specified.

<Film roll 22>
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. 10 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. 7) is selectively transmitted to the connecting gear 651 and the roller 654A. When 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 rotates counterclockwise, the film 24 is wound around the film roll 22. On the other hand, when 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. The solenoid 16C (see FIG. 7) switches whether the rotational driving force of the motor 227 is transmitted to the connection gear 651 or the roller 654A.

<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).

4 and 5, the shapes of the

support members

341 and 342 are bilaterally symmetric.

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 aligned in the vertical direction are formed in the base 341A and the third extending portion 341D. 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”.

4 and 5, the

guide rollers

30, 31, and 32 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.

The induction roller 32 has a static elimination function capable of neutralizing static electricity charged on the film 24 when it is in contact with the film 24. Specific examples of the material of the guide roller 32 include conductive fibers such as carbon fibers and metal fibers.

As shown in FIG. 10, 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 the

carriages

349 and 350. FIG. 10 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 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 and the second extending portion 342 C are disposed below the film roll 22. The guide rollers 30 to 33 and the installation member 35 are disposed below the film roll 22.

FIG. 13 shows a state where the guide mechanism 39 is arranged at the lowest position. In this state, the first extending portion 342 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 34B 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. 10, 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 and on the lower side of the conveyance path 103 (see FIG. 10 and the like). 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. 6, 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 D projecting from the pair of plate-like members 70 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 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. 7). 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. 6), and the holding roller 72 is separated downward from the pedestal guide roller 71 (FIG. 12, etc.). To see).

As shown in FIG. 10, when the holding roller 72 comes close to the downstream side of the pedestal guide roller 71, the holding roller 72 contacts the conveyance path 103 from below. At this time, the film 24 supplied from the film roll 22 is sandwiched between the holding roller 72 and the pedestal guide roller 71. Hereinafter, the base guide roller 71 and the holding roller 72 are collectively referred to as “holding mechanism 70” (see FIG. 6).

<Heating mechanism 86>
As shown in FIG. 6, 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 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 A extend in the vertical direction with their teeth facing downstream. A motor 223 (see FIG. 7) 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. 10, when the five heating units 861 are arranged at the lowest position, the heaters 861 A on the respective upper surfaces are separated from the transport path 103 downward. On the other hand, when the five heating units 861 are arranged at the uppermost position as shown in FIG. 11, the heaters 861 A on the respective upper surfaces are arranged slightly above the conveyance path 103.

As shown in FIG. 6, the plate-like lid member 87 is disposed on the upper surface of the heater 861 A on each upper surface with the five heating units 861 disposed 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. 6, 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 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 extend 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. 7) 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. 14), 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 downstream (see FIG. 16), the stopper 81 is separated downstream from 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. 10, 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. 7) moves the cutting portion 77 in the left-right direction along the guide rail 74.

The sensor 205 (see FIG. 7) 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 plurality of holes 927 can be attached with the transport unit 60, respectively. 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 memory 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 memory 202 to execute a process of packaging the article 3 placed on the pedestal 2 with the film 24. The flash memory 202 stores programs and the like for various processes to be described later executed by the CPU 201. Further, the flash memory 202 stores the total number of feeding rotations and the total number of winding rotations.

The packaging apparatus 1 includes drive units 211 to 217, motors 221 to 227, and

encoders

232 and 237. The driving 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 memory 202, RAM 203, sensor 205, operation unit 206, display unit 207, solenoid 16C, heater 861A, drive units 211 to 217, and

encoders

232 and 237. The driving units 211 to 217 are electrically connected to the motors 221 to 227, respectively.

<Table 202A>
The table 202A stored in the flash memory 202 will be described with reference to FIG. In the table 202A, the film physical properties and the feeding amount are stored in association with each other. The film physical property is identification information for identifying the physical property (tensile strength, tensile elongation, tensile elastic modulus, etc.) of the film used. The feed amount indicates the length of the film 24 fed from the film roll 22.

<Packaging processing>
The packaging process (see FIGS. 9A and 9B) executed by the CPU 201 of the packaging device 1 will be described with reference to FIGS. 9A to 16. When the packaging apparatus 1 is powered on, the CPU 201 starts the packaging process by reading and executing the program stored in the flash memory 202. 10 to 16 are sectional views taken along the line AA in FIG.

As shown in FIG. 9A, 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. 10). The CPU 201 rotates the belts 511 and 512 (see FIG. 10) of the transport mechanism 50 until the sensor 205 (see FIG. 7) detects the reflection plate, and the transport unit starts from the receiving surface 12A (see FIG. 3) of the cradle 12. 60 is projected upward (see FIG. 10). The CPU 201 lowers the heating mechanism 86 and places it at the lowest position. The heater 861A (see FIG. 6) of each heating unit 861 (see FIG. 6) is separated downward from the conveyance path 103 (see FIG. 10). The CPU 201 moves the stopper 81 downstream (see FIG. 10). The CPU 201 swings the pair of holding members 78 so that the holding roller 72 is separated downward from the base guide roller 71.

When the user mounts the unused film roll 22 and turns on the power of the packaging apparatus 1, an input operation for notifying the packaging apparatus 1 that the unused film roll 22 is mounted is performed via the operation unit 206. Do it. When this input operation is detected, the CPU 201 sets 0 to the total number of feeding rotations and the total number of winding rotations stored in the flash memory 202 by the initialization process (S1). When the input operation for notifying that the unused film roll 22 is mounted is not detected, the CPU 201 does not set 0 to the total number of feeding rotations and the total number of winding rotations.

The user pulls the film 24 downward from the film roll 22 and sandwiches the film 24 from both sides in the transport direction by the

rollers

654A and 654B. The user further pulls out the film 24 and passes the film 24 to the upstream side of the guide roller 33. The user further pulls out the film 24 and places the leading end of the film 24 below the transport path 103 (see FIG. 10) and downstream of the pedestal guide roller 71 (see FIG. 10). The user places the pedestal 2 on the cradle 12 (see FIG. 10). 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. 10).

In the above process, when the film roll 22 rotates in response to the film 24 being pulled out from the film roll 22, the motor 227 rotates. The CPU 201 updates the total number of feed rotations stored in the flash memory 202 according to the pulse signal output from the encoder 237 when the motor 227 rotates.

The user performs an input operation for notifying the packaging apparatus 1 that preparation for the start of packaging has been completed via the operation unit 206. When this input operation is detected, the CPU 201 swings the pair of holding members 78 to bring the holding roller 72 close to the downstream side of the base guide roller 71 (see FIG. 10). The leading end of the film 24 drawn out from the film roll 22 is sandwiched from both sides in the transport direction by the pedestal guide roller 71 and the holding roller 72.

The CPU 201 causes the display unit 207 to display a plurality of candidates for the physical properties of the film 24. The user performs an input operation for selecting a candidate corresponding to the physical property of the film 24 to be used among a plurality of candidates via the operation unit 206. When this input operation is detected, the CPU 201 acquires the selected candidate (S3). The CPU 201 stores identification information for identifying physical properties corresponding to the acquired candidates in the RAM 203.

CPU201 judges whether input operation which instruct | indicates the start of packaging was detected via the operation part 206 (S5). When this input operation is not detected (S5: NO), the CPU 201 returns the process to S5. When the user performs an input operation for instructing the start of packaging via the operation unit 206, the CPU 201 detects this input operation (S5: YES). 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. The

rollers

654A and 654B forcibly unwind the film 24 from the film roll 22 (S7). The CPU 201 continues the control of rotating the motor 227 and feeding the film 24 until the processing of S23 described later. The CPU 201 updates the total number of feed rotations stored in the flash memory 202 according to the pulse signal output from the encoder 237 when the motor 227 rotates. As shown in FIG. 10, in response to the film 24 being fed out by the

rollers

654A and 654B (arrow 171), the film 24 is slackened.

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. 10). The transport unit 60 transports the base 2 from the upstream side to the downstream side along the transport path 103 (S9). The downstream end (side 901) of the first plate-like portion 905 of the pedestal 2 contacts the film 24 and then passes over the holding roller 72 (arrow 182 in FIG. 11). 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 moving path 104 from the upstream side and passes above the five heating units 861 (see FIG. 11). When the film 24 is pushed downstream by the side 901 of the first plate-like portion 905 of the pedestal 2, the leading end of the film 24 goes around the lower surface of the first plate-like portion 905 of the pedestal 2.

The CPU 201 determines from the output signal from the encoder 232 whether the side 901 of the first plate-like portion 905 of the base 2 has moved downstream 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 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 (S11). After the heating mechanism 86 moves to the top, the CPU 201 stops driving the motor 223 and stops the heating mechanism 86 from rising. As shown in FIG. 11, 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 surfaces of the first plate-like portions 905 of the base 2. As shown in FIG. 9A, the CPU 201 heats the heater 861A (S13). The heater 861A heats the tip of the film 24 and melts the tip of the film 24. The front 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 (S13). 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 (S15, arrow 184 (see FIG. 12)). 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. 9A, the CPU 201 drives the motor 226 to swing the pair of holding members 78 (S17). As shown in FIG. 12, 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. The leading edge of the film 24 is released. As shown in FIG. 9A, the CPU 201 rotates the motor 222 in the forward direction so that the

belts

511 and 512 rotate in the forward direction, and conveys the base 2 to the downstream side (S19).

As shown in FIG. 12, the front end of the film 24 is welded to the lower surface of the pedestal 2 and moves downstream as the pedestal 2 moves (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 disposed above the film 24 extending above the base 2 and the article 3.

As shown in FIG. 9A, the CPU 201 stops the driving of the motor 222 and stops the conveyance of the base 2. The CPU 201 drives the motor 221 to move the guide mechanism 39 from the highest level to the lowest level (S21). The guide roller 30 moves from the highest position to the lowest position along the movement path 104. In the course of movement, the

guide rollers

30 and 32 contact the film 24 disposed below from above, and guide the film 24 downward along the movement path 104 (see arrow 187 and FIG. 13). The film 24 is pressed against the base 2 and the article 3 from above. As shown in FIG. 13, the guide roller 31 is in contact with the conveyance path 103 from below while being moved to 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. 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 rotates the motor 227 (S23). The film 24 is wound on a film roll 22 (see arrow 172, FIG. 13). 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 until the processing of S27 described later is completed. The CPU 201 updates the total number of winding rotations stored in the flash memory 202 according to the pulse signal output from the encoder 237 when the motor 227 rotates.

The CPU 201 rotates the motor 222 in the reverse direction so that the

belts

511 and 512 rotate in the reverse direction (S25). The pedestal 2 moves from the downstream side to the upstream side (see arrow 188, FIG. 13). 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 crosses the intersection position 105 from the downstream side toward the upstream side. The guide roller 31 of the guide mechanism 39 contacts the lower surface of the pedestal 2 and moves the pedestal 2 along the gap 3424 (see FIGS. 4 and 5) between the first extending portion 342B and the second extending portion 342C. Guide 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 film 24 is wound around the downstream portion of the guide roller 30.

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 (S27). As shown in FIG. 14, the guide roller 30 that has 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 around the film roll 22.

As shown in FIG. 9B, the CPU 201 reads identification information indicating the physical properties of the film 24 selected by the user from the RAM 203, which is identification information stored in the RAM 203. The CPU 201 identifies a feed amount corresponding to the identification information read from the RAM 203 in the table 202A stored in the flash memory 202 (S291). The CPU 201 acquires the total number of feeding rotations and the total number of winding rotations stored in the flash memory 202. The CPU 201 subtracts the total number of take-up rotations from the acquired total number of feed rotations, and calculates a difference. The difference corresponds to the amount of the film 24 fed out from the film roll 22. The CPU 201 calculates a diameter of the film roll 22 by applying a predetermined first calculation formula to the calculated difference (S293). The first calculation formula is stored in the flash memory 202 in advance. In the first calculation formula, the remaining amount of the film 24 wound around the film roll 22 is calculated based on the total amount of the film 24 when not in use and the calculated difference. Furthermore, in the first calculation formula, the diameter of the film roll 22 is calculated based on the thickness and remaining amount of the film 24 stored in advance in the flash memory 202.

The CPU 201 applies a predetermined second calculation formula to the feed amount specified by the process of S291 and the diameter of the film roll 22 calculated by the process of S293, and calculates the rotation speed of the motor 227 (S295). . The second calculation formula is stored in the flash memory 202 in advance. In the second calculation formula, based on the feed amount specified by the process of S291 and the diameter of the film roll 22 calculated by the process of S293, the motor 227 for feeding the film 24 for the feed amount from the film roll 22 is used. The number of revolutions is calculated.

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. The

rollers

654A and 654B forcibly unwind the film 24 from the film roll 22 (S31). The CPU 201 continues the control of rotating the motor 227 and feeding the film 24 until the processing of S33 described later. The CPU 201 updates the total number of feed rotations stored in the flash memory 202 according to the pulse signal output from the encoder 237 when the motor 227 rotates. As shown in FIG. 14, the film 24 is slackened in response to the film 24 being fed out by the

rollers

654A and 654B (arrow 173).

As shown in FIG. 9B, the CPU 201 determines whether the motor 227 has rotated by the number of rotations calculated by the process of S295 after starting feeding of the film 24 by the process of S31. When it is determined that the motor 227 has rotated by the calculated number of rotations, the CPU 201 stops the rotation of the motor 227 (S33). The CPU 201 stops the feeding of the film 24.

The CPU 201 drives the motor 225 to start the movement of the cutting unit 77 from the left side to the right side (S351). When the cutting unit 77 reaches the right side, the CPU 201 stops the rotation of the motor 225 and stops the movement of the cutting unit 77 (S353). During the processing of S351 to S353, the blade portion 771 cuts the portion of the film 24 between the two locations 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.

The induction roller 32 neutralizes static electricity charged on the film 24 while in contact with the film 24. The cut end of the film 24 extending from the film roll 22 is neutralized by the guide roller 32. As shown in FIG. 15, after the film 24 is cut, the cut end portion of the film 24 extending from the film roll 22 is not attracted to the surrounding members by static electricity. The cut end of the film 24 hangs down below the pedestal guide roller 71.

As shown in FIG. 9B, the CPU 201 drives the motor 226 to swing the pair of holding members 78 (S37). As shown in FIG. 15, 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. 9B, the CPU 201 drives the motor 223 to raise the heating mechanism 86 (S39). After the heating mechanism 86 moves to the top, the CPU 201 stops driving the motor 223 and stops the heating mechanism 86 from rising. With the heating mechanism 86 moved to the top (see the arrow 191 and FIG. 15), the heater 861A of each heating unit 861 approaches the transport 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 (S41). The heater 861 A heats the cut end of the film 24 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 (S41). The film 24 cut from the film roll 22 covers 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 (S43, arrow 192 (see FIG. 16)). The heater 861 A of each heating unit 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 (S45, arrow 193 (see FIG. 16)). 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 (S47, arrow 194 (see FIG. 16)). The pedestal 2 and the article 3 that have been packaged are conveyed downstream. The CPU 201 ends the packaging process.

<Main effects of the above embodiment>
As described above, in the packaging device 1, the CPU 201 performs the steps of transporting the base 2 on which the article 3 is placed toward the upstream side and the downstream side, and the step of moving the guide rollers 30 to 33, The film 24 is guided around the base 2 and the article 3 (S9 to S25). Next, the CPU 201 moves the stopper 81 of the rotation suppression mechanism 80 to the upstream side, and sandwiches and fixes the film 24 between the guide roller 30 and the stopper 81 (S27). Next, the CPU 201 cuts the film 24 (S351, S353) and separates the film 24 from the film roll 22. Here, when the film 24 is cut, a force in the contraction direction acts on the film 24 based on the tension acting on the film 24, and a portion extending from the film roll 22 of the film 24 moves greatly and moves away from the pedestal guide roller 71. There is. In this case, even if the holding roller 72 is brought close to the pedestal guide roller 71, the film 24 cannot be sandwiched between the pedestal guide roller 71 and the holding roller 72.

On the other hand, the CPU 201 fixes the roller 654A for at least a part of the period after the film 24 is fixed between the guide roller 30 and the stopper 81 (S27) until the cutting of the film 24 is finished (S353). , 654B feeds the film 24 from the film roll 22. As a result, the CPU 201 makes the tension acting on the film 24 when the film 24 is cut smaller than when the film 24 is not fed out. In this case, when the film 24 is cut, it is possible to suppress the force in the shrinking direction from acting on the film 24. Therefore, after the film 24 is cut, the position of the portion extending from the film roll 22 in the film 24 can be stabilized. Therefore, the CPU 201 can easily sandwich the film 24 by the pedestal guide roller 71 and the holding roller 72. In this case, the user does not have to perform the operation of sandwiching the film 24 by the pedestal guide roller 71 and the holding roller 72 when the packaging is continued after the packaging is once completed. Therefore, the packaging device 1 allows the user to smoothly perform the next packaging process.

The CPU 201 feeds the film 24 from the film roll 22 (S31, S33) until the film 24 is sandwiched between the guide roller 30 and the stopper 81 (S27) and before the cutting of the film 24 is started (S351). ). The CPU 201 completes the feeding of the film 24 from the film roll 22 before the cutting of the film 24 is started. In this case, the CPU 201 can weaken the tension of the film 24 when the cutting of the film 24 is started. Thus, the CPU 201 can appropriately suppress the tension acting on the film 24 when the film 24 is cut from destabilizing the position after the film 24 is cut.

When it is attempted to stabilize the position of the film 24 by reducing the tension by feeding out the film 24, the optimum feeding amount of the film 24 varies depending on physical properties such as elasticity and stretchability of the film 24. The reason is as follows. In the winding step (S23) before the film 24 is fed out, the film 24 is stretched. Depending on the physical properties of the film 24, the stretching amount of the film 24 changes. When the stretching amount changes, the feeding amount necessary to weaken the tension is also different. On the other hand, the CPU 201 specifies the physical properties of the film 24 selected by the user. The CPU 201 specifies the feed amount corresponding to the specified physical property based on the table 202A (S291). When executing the processes of S31 and S33, the CPU 201 feeds out the specified amount of film 24 from the film roll 22. In this case, the CPU 201 can specify an appropriate feeding amount according to the physical properties of the film 24. The CPU 201 can feed the film 24 from the film roll 22 by the specified feed amount. Therefore, since the CPU 201 can optimize the tension acting on the film 24 when the film 24 is cut, the position of the film 24 can be stabilized.

The CPU 201 calculates the diameter of the film roll 22 by applying the difference obtained by subtracting the total number of winding rotations from the total number of feeding rotations to the first calculation formula (S293). The CPU 201 calculates the rotation speed of the motor 227 by applying the feeding amount acquired by the process of S291 and the diameter of the film roll 22 calculated by the process of S293 to the second calculation formula (S295). . The CPU 201 rotates the motor 227 by the calculated number of rotations, and feeds the film 24 from the film roll 22 by the

rollers

654A and 654B (S31). The reason why the above processing is performed is that the amount of the film 24 that is fed out each time the film roll 22 rotates changes depending on the diameter of the film roll 22. Therefore, the CPU 201 can accurately feed out the film 24 corresponding to the target feed amount from the film roll 22 by adjusting the rotation speed of the film roll 22 according to the diameter of the film roll 22.

The cutting portion 77 cuts a portion between portions of the film 24 that are in contact with the

guide rollers

30 and 32. When the cut end portion of the film 24 is charged with static electricity, the film 24 is likely to be adsorbed to surrounding members by static electricity. When the film 24 is attracted to a peripheral member and is separated from the pedestal guide roller 71, the film 24 may be sandwiched between the pedestal guide roller 71 and the holding roller 72 even if the holding roller 72 is brought close to the pedestal guide roller 71. Can not. On the other hand, since the induction roller 32 has a charge eliminating function, static electricity at the cut end of the film 24 extending from the film roll 22 can be removed. For this reason, since the packaging apparatus 1 can suppress adsorption | suction to a peripheral member when the film 24 electrifies, the film 24 can be arrange | positioned in the base guide roller 71 vicinity. The packaging device 1 can sandwich the film 24 between the pedestal guide roller 71 and the holding roller 72 when the holding roller 72 is brought close to the pedestal guide roller 71.
<Modification>

The packaging apparatus 1 wound the film 24 around the film roll 22 by directly rotating the film roll 22. The packaging device 1 may rotate the roller 654A in the direction opposite to the rotation direction when the film 24 is fed out. Accordingly, the CPU 201 may move the film 24 in the same direction as when the film 24 is wound on the film roll 22. The packaging device 1 unwinds the film 24 by rotating the roller 654A. On the other hand, the packaging device 1 may rotate the film roll 22 in the direction opposite to the rotation direction when the film 24 is wound around the film roll 22. Accordingly, the CPU 201 may move the film 24 in the same direction as when the film 24 is drawn out by the roller 654A.

CPU201 moved the stopper 81 of the rotation suppression mechanism 80 to the upstream side (S27), and then started feeding the film 24 from the film roll 22 (S31). The CPU 201 stops the feeding of the film 24 started by the process of S31 (S33), and then cuts the film 24 (S351, S353). The CPU 201 starts the movement of the cutting unit 77 from the left side to the right side to cut the film 24 (S351), and then the film roll for at least a part of the period before the cutting unit 77 reaches the right side (S353). The film 24 may be fed out from the film 22. That is, the CPU 201 may execute the processing of S31 and S33 at any timing between the processing of S351 and the processing of S353.

In the above case, the tension generated in the film 24 in response to the winding of the film 24 started by the process of S23 is continued until immediately before the cutting of the film 24 is started. That is, the tension acting on the film 24 is not weakened and maintained until just before the cutting of the film 24 is started. In this case, it is easy to bite the blade portion 771 into the film 24 in the step of cutting the film 24 by moving the cutting portion 77. Therefore, the CPU 201 can appropriately cut the film 24.

The CPU 201 may start the movement of the cutting unit 77 from the left side to the right side (S351) before the end of the feeding of the film 24 from the film roll 22 (S33). That is, the CPU 201 may execute the process of S351 at any timing between the process of S27, the process of S33, and the field.

The CPU 201 specifies the feed amount corresponding to the physical properties of the film 24 input by the user based on the table 202A (S291). On the other hand, the user may directly input parameters indicating the physical properties of the film 24 into the packaging device 1. The CPU 201 may specify the feed amount by applying a predetermined calculation formula to the input parameter. Regardless of the physical properties of the film 24, the CPU 201 may always feed out the film 24 for a fixed feeding amount by the processing of S31 and S33.

The CPU 201 specifies the diameter of the film roll 22 based on the total number of feeding rotations and the total number of winding rotations (S293). Next, the CPU 201 specifies the rotation speed of the motor 227 based on the specified diameter of the film roll 22 (S295). The CPU 201 may specify the number of rotations of the motor 227 based only on the physical properties of the film 24. For example, in the table 202A, the physical properties of the film 24 and the rotation speed may be associated with each other. The CPU 201 may directly specify the number of rotations corresponding to the physical property of the film 24 selected by the user from the table 202A by the process of S291. The CPU 201 may rotate the motor 227 by the specified number of rotations.

The induction roller 32 had a static elimination function. In contrast, at least one of the guide rollers 31 to 33 may have a charge eliminating function. For example, the guide roller 31 may have a charge removal function. Further, none of the guide rollers 31 to 33 need to have a charge eliminating function.

<Others>
The guide rollers 30 to 32 are an example of the “guide unit” in the present invention. The CPU 201 that performs the process of S1 is an example of the “first holding unit” in the present invention. The CPU 201 that performs the processes of S9 and S19 is an example of the “first moving unit” in the present invention. The CPU 201 that performs the process of S17 is an example of the “release means” in the present invention. The CPU 201 that performs the process of S21 is an example of the “second moving unit” in the present invention. The CPU 201 that performs the process of S23 is an example of the “winding unit” in the present invention. The CPU 201 that performs the process of S25 is an example of the “third moving unit” in the present invention. The CPU 201 that performs the process of S27 is an example of the “fixing means” in the present invention. The CPU 201 that performs the process of S351 is an example of the “cutting unit” in the present invention. The CPU 201 that performs the processes of S31 and S33 is an example of the “feeding unit” in the present invention. The CPU 201 that performs the process of S37 is an example of the “second holding unit” in the present invention. The CPU 201 that performs the process of S3 is an example of the “first specifying unit” in the present invention. The CPU 201 that performs the processing of S293 is an example of the “second specifying unit” in the present invention. The CPU 201 that performs the process of S295 is an example of the “third specifying unit” in the present invention. The flash memory 202 that stores the table 202A is an example of the “storage unit” in the present invention. The guide roller 32 is an example of the “charge eliminating roller” of the present invention.

Claims

A packaging device for packaging a pedestal and an article placed on the pedestal with a film,
A film roll mounting part capable of mounting a film roll wound with the film; and
A holding mechanism that is disposed below the film roll mounting portion and holds the film fed from the film roll;
A transport mechanism for relatively moving the pedestal along a transport path passing between the film roll mounting unit and the holding mechanism;
A guide that is movable along a moving path extending in a direction intersecting the transport path, and for guiding the film;
First holding means for holding the film by the holding mechanism;
After the film is held by the holding mechanism by the first holding means, the upstream side of the pedestal arranged on the upstream side with respect to the intersection position where the conveyance path and the movement path intersect. First moving means for relatively moving the pedestal by the transport mechanism until an end portion is disposed downstream of the intersecting position;
Release means for releasing the holding of the film by the holding mechanism;
Second moving means for moving the guide portion from above the intersecting position to below the intersecting position along the moving path after relatively moving the pedestal by the first moving means;
A winding means for winding the film around the film roll after moving the guiding portion by the second moving means;
After the guide portion is moved by the second moving means, the pedestal is relatively moved by the transport mechanism until the upstream end portion of the pedestal is arranged on the upstream side of the guide portion. Three moving means;
A fixing means for fixing the film in contact with the guiding portion to the guiding portion after the relative movement of the pedestal by the third moving means;
After the film is fixed by the fixing means, a cutting means for cutting the film between the guide portion and the film roll;
A feeding means for feeding out the film from the film roll for at least a part of the period after the film is fixed by the fixing means and before the cutting of the film by the cutting means is completed;
A packaging apparatus comprising: a second holding unit that holds the film by the holding mechanism after the cutting of the film by the cutting unit is completed.
The feeding means is
The packaging apparatus according to claim 1, wherein the film is unwound from the film roll for at least a part of a period from the start of the cutting of the film by the cutting means to the end of cutting.
The feeding means is
After the film is fixed to the guide portion by the fixing means, the film is unwound from the film roll for at least a part of the period before the cutting of the film by the cutting means is started. The packaging apparatus according to claim 1.
First specifying means for specifying the physical properties of the film;
Storage means for storing the physical properties in association with the amount of feeding of the film;
With
The feeding means is
4. The film according to claim 1, wherein the film is fed out for the amount of feeding associated with the physical property specified by the first specifying unit among the amount of feeding stored in the storage unit. 5. The packaging device described.
A second specifying means for specifying the diameter of the film roll;
Based on the feeding amount associated with the physical property specified by the first specifying means and the diameter specified by the second specifying means, a rotation amount of a motor for rotating the film roll is specified. 3 specifying means,
The feeding means is
The packaging apparatus according to claim 4, wherein the film is fed from the film roll by rotating the motor by the amount of rotation specified by the third specifying unit.
The packaging apparatus according to any one of claims 1 to 5, further comprising a static elimination roller that neutralizes the film cut by the cutting means.