JP2015030525A - Packaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging device for packing an article properly.SOLUTION: The packaging device packs an article mounted on a pedestal by a film. The packaging device has a guide roller capable of moving along a movement path crossing to a transport path. A CPU of the packaging device bonds part of the film to the pedestal (S19). The CPU transports the pedestal from an upstream side to a downstream side with respect to a cross position where the transport path and the movement path cross (S25). The CPU moves the guide roller along the movement path when an upstream side end of the pedestal moves to the downstream side of the cross position. The CPU transports the pedestal to the upstream side. The CPU applies load to the film in an opposite direction of a delivery direction, at any timing of a period from bonding of part of the film to the pedestal to starting of transport of the pedestal to the upstream side (S32).

Description

  The present invention relates to a packaging apparatus for packaging an article by covering the article placed on a plate-like pedestal with a film together with a film.

  A packaging apparatus for covering and packaging an article with a film has been proposed. For example, the packaging apparatus described in Patent Document 1 arranges a film at a position that intersects a conveyance surface through which an article to be conveyed passes. The article is conveyed toward the film from the upstream side. The film is pulled downstream by the article. The film adheres to the article by being pressed against the article with a strength corresponding to the tension. The packaging device melts the film on the upstream side of the article. The article is sealed with a film. The packaging device can also wrap the article placed on the plate-like pedestal with a film together with the pedestal.

JP 7-187114 A

  In the packaging apparatus, when the tension of the film is increased, a force in the direction toward the upstream side of the article is applied from the film, so that the article may not be conveyed downstream or the article may be deformed. On the other hand, when the tension of the film is reduced, the film may not adhere to the article. In these cases, the packaging apparatus has a problem that the article cannot be appropriately packaged by the film.

  An object of the present invention is to provide a packaging device capable of appropriately packaging an article.

  The packaging device of the present invention is a packaging device that wraps a pedestal and an article placed on the pedestal with a film, a conveyance mechanism that conveys the pedestal on which the article is placed, and the conveyance mechanism. The pedestal that is transported by the pedestal is movable along a moving path that extends in a direction that intersects the transport path through which the pedestal passes. After adhering a part of the film to the pedestal by one adhering means and the first adhering means, downstream from the upstream side in the conveying direction with respect to the intersecting position where the conveying path and the moving path intersect A first conveying means for controlling the conveying mechanism to convey the pedestal to the side, and the pedestal is conveyed by the first conveying means, and on the upstream side of the pedestal, on the downstream side of the intersection position. end And moving means for moving the guide section along the movement path, and controlling the transport mechanism to transport the pedestal to the upstream side after moving the guide section by the moving means. Second conveying means, load means for applying a load in a direction opposite to the film feeding direction, and switching means for switching between a state in which the load means can apply the load and a state in which the load cannot be applied. The switching means includes a period of time from when a part of the film is adhered to the pedestal by the first adhering means until starting the conveyance of the pedestal to the upstream side by the second conveying means. The load means is switched to a state where the load can be applied at any timing.

  Since the tension | tensile_strength which acts on a film can be enlarged by applying a load with respect to a film in the direction opposite to a drawing | feeding direction, the packaging apparatus of this invention can stick a film to a base and articles | goods. The packaging device has a loading means in a state in which a load can be applied to the film at any timing during a period from the time when a part of the film is adhered to the pedestal to the time when the pedestal is transported upstream. Switch. Thereby, the packaging device can be adjusted so that the upstream force exerted on the pedestal and the article by the film is not excessively increased by the tension applied to the film. Therefore, the packaging device can appropriately convey the pedestal and the article, and prevent the pedestal and the article from being deformed by the film. Therefore, the packaging device can appropriately package the base and the article with the film.

  In the packaging device according to the aspect of the invention, the switching unit may have any timing in a period from the start of the conveyance of the pedestal by the first conveyance unit to the start of the movement of the guide unit by the movement unit. The load unit may be switched to a state where the load can be applied. In this case, the packaging device can adhere the film to the upstream portion of the article. Accordingly, the packaging device can appropriately package the upstream portion of the article with the film.

  In the packaging device of the present invention, the switching means may be at any timing in a period from the start of the movement of the guiding portion by the moving means to the start of the conveyance of the pedestal by the second conveying means. The load unit may be switched to a state where the load can be applied. In this case, the packaging device can adhere the film to the upstream portion of the article. Accordingly, the packaging device can appropriately package the upstream portion of the article with the film.

  In the packaging device of the present invention, the load means may apply a load in the opposite direction to the film by applying a torque when the film roll around which the film is wound rotates around the winding center. Good. In this case, the packaging device can easily apply a load to the film in the direction opposite to the feeding direction.

  In the packaging device of the present invention, the heating apparatus includes at least a heater, and the first adhesion unit heats a part of the film with the heating part, thereby causing a part of the film to be downstream of the pedestal. You may adhere to the side edge. In this case, the packaging apparatus applies a load to the film after adhering a part of the film to the downstream end of the pedestal. Therefore, since the packaging apparatus can increase the tension acting on the film by applying a load to the film, the film can be properly adhered to the base and the article. The packaging device can more appropriately package the pedestal and the article with a film.

  The packaging apparatus of this invention may be provided with the change means to change the load added by the said load means. In this case, the packaging device can appropriately package different pedestals and articles with the film.

It is a perspective view of packaging device 1 (state where case 800 was equipped). It is a right view of the packaging apparatus 1 (state with the housing | casing 800 mounted | worn). 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 an enlarged perspective view of a first transport unit 61 and a second transport unit 62. FIG. FIG. 6 is a right side view of a first transport unit 61 and a second transport unit 62. 4 is a perspective view of the vicinity of the upper end of the side plate portion 11. FIG. 4 is a perspective view of a film cassette 21 and a torque adjustment mechanism 40. FIG. 3 is a perspective view of a film roll 22 and a torque adjustment mechanism 40. FIG. It is a right view of the torque adjustment mechanism 40 in the first state. It is a right view of the torque adjustment mechanism 40 in the second state. It is a right view of the torque adjustment mechanism 40 in the third state. It is a right view of the torque adjustment mechanism 40 of a 4th state. 3 is a perspective view of a movable roller 30. FIG. It is a right view of the state which has arrange | positioned the support part 34 to the top. It is a right view of the state which has arrange | positioned the support part 34 to the lowest position. FIG. 5 is a perspective view of a pedestal guide roller 71, a holding roller 72, and a heating unit 86. 7 is a perspective view of a heating unit 86. FIG. 4 is a perspective view of a rotation suppressing unit 80. FIG. 4 is a perspective view of the movable roller 30, a heating unit 86, and a rotation suppressing unit 80. FIG. 4 is a perspective view of the movable roller 30, a heating unit 86, and a rotation suppressing unit 80. FIG. 3 is a perspective view of a pedestal 2. FIG. 3 is a plan view of a pedestal 2 placed on a cradle 12. FIG. FIG. 6 is a perspective view of a pedestal 2 attached to a first transport unit 61 and a second transport unit 62. 2 is a block diagram showing an electrical configuration of the packaging device 1. FIG. It is a flowchart of a packaging process. It is a flowchart of a load control 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. 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 flowchart of the load control process in a 1st modification. It is a flowchart of the load control process in a 2nd modification.

  Hereinafter, 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 way is referred to as packaging 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. 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 respectively referred to as an upstream side and a downstream side in the transport direction.

  As shown in FIGS. 1 and 2, 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 shape of the lower housing 803 is a substantially rectangular parallelepiped with the left-right direction as the longitudinal direction. The upper housing 801 includes two standing portions 802A and a erection portion 802B. The two standing portions 802A extend upward from the left and right ends of the lower housing 803, respectively. The erection part 802B is erected between the upper ends of the two erection parts 802A. Each of the two standing portions 802A covers the side plate portion 11 (see FIG. 3, described later) from the outside in the left-right direction. The erection part 802B covers the film cassette 21 (see FIG. 3, described later) from above. An opening 805 surrounded by the lower housing 803, the two standing portions 802A, and the erection portion 802B is formed on each of the upstream side surface and the downstream side surface of the housing 800.

(1) cradle 12, 13
As shown in FIGS. 1 and 2, 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 leg 121 supports the cradle 12 from below, and the leg 131 supports the cradle 13 from below. 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 is completed on the upper surface. Hereinafter, the upper surface of the cradle 12 is referred to as a receiving surface 12A, and the upper surface of the cradle 13 is referred to as a receiving surface 13A. With the cradles 12 and 13 extending in the horizontal direction, the receiving surfaces 12A and 13A are horizontal. Since the receiving surfaces 12A and 13A form the same plane, the pedestal 2 can be smoothly conveyed. Hereinafter, a path portion of the pedestal 2 that is a plane formed by the receiving surfaces 12A and 13A and is transported is referred to as a transport path 103 (see FIG. 28 and the like).

  As shown in FIG. 3, the packaging device 1 includes a bottom portion 10 and side plate portions 111 and 112. The shape of the bottom 10 is a rectangular shape in plan view. The side plate portion 111 extends in the upward vertical direction from the right end portion of the bottom portion 10. The side plate portion 112 extends in the upward vertical direction from the left end portion of the bottom portion 10. Hereinafter, the side plate portions 111 and 112 are collectively referred to as the side plate portion 11. The shape of the side plate portion 11 is a substantially rectangular plate shape whose longitudinal direction is the vertical direction. The inner surfaces of the side plate portions 111 and 112 face each other. The cradle 12 is supported by the end portion on the upstream side of the side plate portion 11. The cradle 13 is supported by the end portion on the downstream side of the side plate portion 11.

  The cradle 12 includes a guide portion 16 in a portion of the right end surface that is close to the side plate portion 11 and a portion of the left end surface that is close to the side plate portion 11. The cradle 13 includes a guide portion 17 in a portion of the right end surface that is close to the side plate portion 11 and a portion of the left end surface that is close to the side plate portion 11. The guide parts 16 and 17 can support the pedestal 2 being transported from both the left and right sides. The guide parts 16 and 17 can prevent the pedestal 2 being transported from falling in the left-right direction.

(2) Transport mechanism 50
As shown in FIG. 4, endless belts 511 and 512 are provided at the right and left ends of the cradles 12 and 13, respectively. Hereinafter, the belts 511 and 512 are also collectively referred to as a belt 51. The belt 51 is a composite material such as fiber and urethane rubber, and is elastically deformable. The belt 51 has teeth on the inner surface. As shown in FIG. 3, each of the portions of the belt 51 disposed at the left and right ends of the cradle 12 is covered from the outside by a pair of covers 122. Each of the portions of the belt 51 disposed at the left and right ends of the cradle 13 is covered from the outside by the pair of covers 132. Since the covers 122 and 132 do not cover the receiving surfaces 12A and 13A, the belt 51 is exposed to the receiving surfaces 12A and 13A. In FIG. 4, the covers 122 and 132 are omitted.

  As shown in FIG. 4, the belt 511 is installed between the pulleys 52, and the belt 512 is installed between the pulleys 53. The pulley 52 includes pulleys 521, 523, 524, 525, and 527, and the pulley 53 includes pulleys 531, 533, 534, 535, and 537. The respective axes of the pulleys 521, 523, 524, 525, 527, 531, 533, 534, 535, 537 extend in the left-right direction. Hereinafter, the pulleys 521, 527, 531, and 537 are referred to as first driven pulleys 521, 527, 531, and 537, respectively. The pulleys 523, 525, 533, and 535 are referred to as second driven pulleys 523, 525, 533, and 535, respectively. The pulleys 524 and 534 are referred to as main driving pulleys 524 and 534, respectively.

  The first driven pulley 521 is rotatably provided on the downstream side of the right side surface of the cradle 13. The first driven pulley 527 is rotatably provided on the upstream side of the right side surface of the cradle 12. The second driven pulleys 523 and 525 are provided on the downstream side and the upstream side of the left side surface of the side plate portion 111 (see FIG. 3), respectively. The first driven pulley 531 is rotatably provided on the downstream side of the left side surface of the cradle 13. The first driven pulley 537 is rotatably provided on the upstream side of the left side surface of the cradle 12. The second driven pulleys 533 and 535 are provided on the downstream side and the upstream side of the right side surface of the side plate portion 112 (see FIG. 3), respectively. The first driven pulleys 521 and 527 are in contact with the inside of the belt 511 and support the belt 511 in a rotatable manner. The second driven pulleys 523 and 525 are in contact with the outside of the belt 511 and support the belt 511 in a rotatable manner. The first driven pulleys 531 and 537 are in contact with the inside of the belt 512 and support the belt 512 rotatably. The second driven pulleys 533 and 535 are in contact with the outside of the belt 512 and support the belt 512 rotatably. The main pulley 524 is disposed at the approximate center in the transport direction on the left side surface of the side plate portion 111. The main pulley 534 is disposed on the right side surface of the side plate portion 112 at the approximate center in the conveyance direction. The main driving pulley 524 contacts the inside of the belt 511, and the main driving pulley 534 contacts the inside of the belt 512. Each of the main pulleys 524 and 534 has teeth on the outer surface. The main pulley 524 engages with the inner teeth of the belt 511, and the main pulley 534 engages with the inner teeth of the belt 512.

  The main pulleys 524 and 534 are connected by a shaft 59 extending in the left-right direction. A shaft 581 extends rightward from the right side surface of the main pulley 524. A spur gear 58 is provided at the tip of the shaft 581. A motor 222 is provided below the upstream portion of the cradle 13. The rotation shaft of the motor 222 extends to the right. A spur gear 56 is provided at the tip of the rotating shaft of the motor 222. Between the spur gears 56 and 58, the transmission part 57 comprised by the several spur gear is provided. The transmission unit 57 transmits the rotational driving force of the spur gear 56 to the spur gear 58. The belt 51 is rotated by a motor 222. The belt 51 conveys the pedestal 2 from the upstream side to the downstream side by the conveyance unit 60 provided on the outer surface. Hereinafter, the belt 51, the conveyance unit 60, the motor 222, and the transmission unit 57 are collectively referred to as a conveyance mechanism 50. The spur gears 56 and 58 and the transmission portion 57 rotate the main driving pulley 524 by transmitting the rotational driving force of the motor 222 to the main driving pulley 524. Since the main driving pulleys 524 and 534 are connected by the shaft 59, the main driving pulley 534 is rotated by the rotation of the main driving pulley 524. The main pulleys 524 and 534 rotate the belts 511 and 512, respectively. The belt 51 conveys the base 2 from the upstream side to the downstream side by rotating in the counterclockwise direction when viewed from the right side.

(3) Transport unit 60
The conveyance unit 60 will be described. The conveyance unit 60 is provided on the outer side surface of each of the belts 511 and 512. The conveyance unit 60 conveys the pedestal 2 from the upstream side to the downstream side by moving from the cradle 12 to the cradle 13 as the belt 51 rotates. As shown in FIG. 5, the transport unit 60 includes a first transport unit 61 and a second transport unit 62. The first transport unit 61 and the second transport unit 62 are separated in the direction in which the belt 51 extends, that is, in the transport direction. The 1st conveyance part 61 is provided with the 1st protrusion part 611, the 1st extension part 612, and the nail | claw part 613 (refer FIG. 6). The first protrusion 611 protrudes perpendicularly and outwardly with respect to the outer surface of the belt 51. A first extending portion 612 extends from an end portion of the first projecting portion 611 opposite to the side connected to the belt 51 and a side surface on the upstream side toward the upstream side. A space is formed in a portion sandwiched between the belt 51 and the first extending portion 612. The first conveyance unit 61 has a shape in which a portion of the upstream side surface close to the belt 51 is recessed downstream. As shown in FIG. 6, a claw portion 613 is provided in a portion of the first protruding portion 611 that is in contact with the belt 51. The claw portion 613 fixes the first transport unit 61 to the belt 51.

  As shown in FIG. 5, the second transport unit 62 includes a second projecting portion 621, a second extending portion 622, and a claw portion 623 (see FIG. 6). The second protruding portion 621 protrudes in the vertical direction and the outward direction with respect to the outer surface of the belt 51. The second protrusion 621 is provided at a portion separated by a predetermined distance upstream from the first protrusion 611 of the first transport unit 61. The second extending portion 622 extends from the end of the second protrusion 621 opposite to the side connected to the belt 51 and the side surface on the downstream side toward the downstream side. A space is formed in a portion sandwiched between the belt 51 and the second extending portion 622. The second conveyance unit 62 has a shape in which a portion of the downstream side surface close to the belt 51 is recessed upstream. As shown in FIG. 6, a claw portion 623 is provided in a portion of the second projecting portion 621 that contacts the belt 51. The claw portion 623 fixes the second conveyance unit 62 to the belt 51.

  The packaging device 1 includes a sensor 204 (see FIG. 25) inside the side plate portion 111. The sensor 204 is a non-contact position sensor that can detect a reflector provided on the outer surface of the belt 51. The sensor 204 is disposed below the belt 51 and irradiates light upward. The sensor 204 can detect the reflecting plate by detecting the reflected light from the reflecting plate. In addition, when the sensor 204 detects a reflecting plate, the conveyance part 60 provided in the belt 51 will be in the state protruded upwards from the receiving surface 12A of the receiving stand 12. FIG.

(4) Film cassette 21
As shown in FIG. 7, a plate-like installation plate 117 is installed between the upper ends of the side plate units 111 and 112. The erection plate 117 includes a horizontal portion 117A extending horizontally, a vertical portion 117B extending vertically upward from an upstream end of the horizontal portion 117A, and a vertical portion extending vertically upward from a downstream end of the horizontal portion 117A. 117C. The film cassette 21 is mounted on the packaging device 1 by placing the film cassette 21 (see FIG. 3) on the upper side of the horizontal portion 117A.

  As shown in FIG. 7, the torque adjustment mechanism 40 is provided on the upper side of the horizontal portion 117 </ b> A and on the right side surface of the side plate portion 112. The torque adjustment mechanism 40 is a mechanism for applying torque to the rotation of the film roll 22 (see FIG. 9) in the film cassette 21. Details of the torque adjustment mechanism 40 will be described later. The torque adjustment mechanism 40 is supported on the left side of the support plate 19 that extends upward from the horizontal portion 117 </ b> A and parallel to the side plate portion 112. A wall plate 18 that covers the upstream side, the downstream side, and the right side of the torque adjustment mechanism 40 is provided above the horizontal portion 117A. A recessed portion 18 </ b> A that is recessed downward is provided at the upper end of the portion of the wall plate 18 that covers the right side of the torque adjustment mechanism 40.

  As shown in FIG. 8, the film cassette 21 has a substantially cylindrical shape. The film cassette 21 accommodates therein a film roll 22 (see FIG. 9) around which a film 24 is wound. The film cassette 21 includes a discharge port (not shown) extending in the width direction of the film 24 wound around the film roll 22 on the lower side. The film 24 fed out from the film roll 22 is discharged downward from the discharge port. The pedestal 2 on which the article 3 is placed is transported from the upstream side to the downstream side of the film cassette 21 and wrapped by the film 24 discharged from the film cassette 21.

  Of the two side walls 28 orthogonal to the axial direction of the film cassette 21, the side wall 28 </ b> B disposed on the left side with the film cassette 21 mounted on the packaging device 1 is provided with a protruding portion 25 </ b> B protruding to the right side. . The shape of the protrusion 25B is a prismatic shape. The protruding portion 25 </ b> B extends along the axis of the film cassette 21. A hole (not shown) is provided on the downstream side of the peripheral wall of the protrusion 25B. When the film cassette 21 is mounted on the packaging device 1, the protrusion 25 </ b> B fits into the recess 18 </ b> A (see FIG. 7) of the wall plate 18. A torque adjustment mechanism 40 is disposed on the left side of the film cassette 21 in a state of being mounted on the packaging device 1.

  As shown in FIG. 9, among the flanges 27 at both ends of the shaft of the film roll 22, the film gear 26 </ b> B projecting to the left side is disposed on the flange 27 </ b> B disposed on the left side with the film cassette 21 mounted on the packaging device 1. Provided. The film gear 26 </ b> B extends along the axis of the shaft 26 of the film roll 22. The film gear 26B is disposed inside the protruding portion 25B (see FIG. 8) of the film cassette 21. A part of the film gear 26B is exposed from a hole provided on the downstream side of the peripheral wall of the protruding portion 25B.

(5) Torque adjustment mechanism 40
The torque adjustment mechanism 40 will be described with reference to FIGS. 8 to 13. As shown in FIG. 9, the torque adjustment mechanism 40 includes a first gear 41, a second gear 42, a third gear 43, a fourth gear 44, a fifth gear 45, a first load 411, a second load 421, a third gear. A load 431, a motor 228, and a swing plate 46 (see FIG. 10) are provided. The first gear 41 to the fifth gear 45 are spur gears. The diameters of the first gear 41 to the fifth gear 45 are substantially the same as the diameter of the film gear 26B. The first load 411 to the third load 431 include a clutch spring.

  As shown in FIG. 8, the first load 411 to the third load 431 and the motor 228 are fixed to the left side surface of the support plate 19 with screws. As shown in FIG. 9, the first gear 41 is located at a position facing the first load 411, the second load 421, the third load 431, and the motor 228 across the support plate 19 (see FIG. 8). The second gear 42, the third gear 43, and the fifth gear 45 are arranged. The fifth gear 45 is disposed at a position where it can mesh with the film gear 26 </ b> B of the film cassette 21 (see FIG. 8) attached to the packaging device 1. As shown in FIG. 10, the first gear 41 is disposed on the downstream side of the fifth gear 45. A third gear 43 is disposed below the film gear 26B in a state where the film cassette 21 is mounted on the packaging device 1. When the straight line on the support plate 19 connecting the centers of the first gear 41 and the third gear 43 is the axis of symmetry, the second gear 42 is disposed at a position that satisfies the symmetrical relationship with the film gear 26B. .

  As shown in FIG. 9, the rotation shafts 412, 422, and 432 extending in the horizontal direction from the first load 411, the second load 421, and the third load 431, respectively, are supported by the support plate 19 (see FIG. 8). It penetrates the hole provided in. The first gear 41, the second gear 42, and the third gear 43 are connected to the right ends of the rotation shafts 412, 422, and 432 that protrude rightward with respect to the support plate 19. Each of the first load 411 to the third load 431 applies torque when each of the first gear 41 to the third gear 43 rotates. The magnitude of torque applied by each of the first load 411 to the third load 431 increases in the order of the first load 411, the second load 421, and the third load 431.

  A rotating shaft 452 extending in the right horizontal direction from the motor 228 passes through a hole provided in the support plate 19 (see FIG. 8). As shown in FIG. 10, one end of the swing plate 46 is connected to the right end of the rotating shaft 452 that protrudes to the right with respect to the support plate 19. The swing plate 46 is plate-shaped. The swing plate 46 can be rotated by a motor 228. A fifth gear 45 is disposed on the left side of the swing plate 46. The rotation shaft 452 passes through a hole provided at the center of the fifth gear 45. The fifth gear 45 can rotate around the rotation shaft 452. The swing plate 46 has a hole at the other end. The rotation shaft 442 of the fourth gear 44 is inserted through the hole at the other end of the swing plate 46. The swing plate 46 rotatably supports the fourth gear at the other end. The fourth gear 44 and the fifth gear 45 mesh with each other. The fourth gear 44 swings about the rotation shaft 452 when the swing plate 46 is rotated by the motor 228. Note that the distance between the rotation shaft 442 of the fourth gear 44 and the rotation shaft 452 of the fifth gear 45 does not change even if the swing plate 46 rotates. Therefore, even when the fourth gear swings, the fourth gear 44 and the fifth gear 45 maintain the meshed state.

  As shown in FIG. 11, the first gear 41 and the fourth gear 44 mesh with each other in a state in which the motor 228 rotates and the swing plate 46 rotates most clockwise in a right side view. In this state, when the film gear 26 </ b> B rotates in the rotation direction when the film 24 is fed from the film roll 22, the first load 411 passes through the first gear 41, the fourth gear 44, and the fifth gear 45. Thus, torque is applied to the film gear 26B in the direction opposite to the rotation direction.

  As shown in FIG. 12, the motor 228 rotates, and the second gear 42 and the fourth gear 44 are in a state where the swing plate 46 is rotated counterclockwise as viewed from the right side with respect to the state of FIG. Mesh. In this state, when the film gear 26 </ b> B rotates in the rotation direction when the film 24 is unwound from the film roll 22, the second load 421 passes through the second gear 42, the fourth gear 44, and the fifth gear 45. Thus, torque is applied to the film gear 26B in the direction opposite to the rotation direction.

  As shown in FIG. 13, the third gear 43 and the fourth gear 44 mesh with each other in a state in which the motor 228 is rotated and the swing plate 46 is most rotated counterclockwise as viewed from the right side. In this state, when the film gear 26 </ b> B rotates in the rotation direction when the film 24 is unwound from the film roll 22, the third load 431 passes through the third gear 43, the fourth gear 44, and the fifth gear 45. Thus, torque is applied to the film gear 26B in the direction opposite to the rotation direction.

  As shown in FIG. 10, when the film gear 26B rotates with the fourth gear 44 not engaged with any of the first gear 41, the second gear 42, and the third gear 43, the first load 411 to the first load None of the three loads 431 applies torque to the film gear 26B.

  Hereinafter, a state where the fourth gear 44 is not engaged with any of the first gear 41, the second gear 42, and the third gear 43 (see FIG. 10) is referred to as a first state. A state (see FIG. 11) in which the first gear 41 and the fourth gear 44 are engaged is referred to as a second state. A state where the second gear 42 and the fourth gear 44 are engaged (refer to FIG. 12) is referred to as a third state. A state (see FIG. 13) in which the third gear 43 and the fourth gear 44 are engaged is referred to as a fourth state. The magnitude of torque applied to the film gear 26B increases in the order of the first state, the second state, the third state, and the fourth state.

(6) Movable roller 30
As shown in FIG. 3, a protruding portion 113 protruding rightward is provided on the right side surface of the side plate portion 111. A protruding portion 114 protruding leftward is provided on the left side surface of the side plate portion 112. Each of the protrusions 113 and 114 has a box shape extending in the vertical direction. A carriage (not shown) that is driven by the rotation of a motor 221 (see FIG. 25) is provided inside the protrusions 113 and 114. The carriage inside the protruding portion 113 is connected to the support plate portion 351 at the upstream portion of the protruding portion 113. The shape of the support plate portion 351 is a plate shape. The support portion 341 is connected to the left side of the support plate portion 351. The carriage inside the protruding portion 114 is connected to the support plate portion 352 at a portion on the upstream side of the protruding portion 114. The shape of the support plate portion 352 is a plate shape. The support part 342 is connected to the right side of the support plate part 352. Hereinafter, the support portions 341 and 342 are collectively referred to as the support portion 34. The support part 34 supports the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 (see FIG. 14). Hereinafter, the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 are collectively referred to as the movable roller 30. The motor 221 can move the support part 34 connected to each of the support plate parts 351 and 352 in the vertical direction via the carriage.

  As shown in FIG. 14, the shape of the movable roller 30 is a cylindrical shape. The movable roller 30 extends in the left-right direction. The length in the left-right direction of the movable roller 30 is substantially the same as the length in the left-right direction of the cradle 12, 13 (see FIG. 3). The movable roller 30 includes a cylindrical portion and a shaft portion. The shaft portion extends in the left-right direction. The cylindrical portion is provided along the peripheral wall of the shaft portion. The material of the cylindrical portion of the guide roller 31 is rubber and is fixed to the shaft portion. The cylindrical portions of the first auxiliary roller 32 and the second auxiliary roller 33 are rotatable with respect to the shaft portion.

  The support portions 341 and 342 support the right end and the left end of the shaft portion of the movable roller 30, respectively. The shaft portion of the guide roller 31 is rotatable with respect to the support portion 34. The shaft portions of the first auxiliary roller 32 and the second auxiliary roller 33 are fixed to the support portion 34. The support part 34 is a plate-like member having a substantially inverted L shape when viewed from the right side. The guide roller 31 is supported by an end portion on the downstream side of a portion extending in the transport direction among the support portions 341 and 342. The first auxiliary roller 32 is supported in the vicinity of the upstream side of the portion of the support portions 341 and 342 where the guide roller 31 is supported. The second auxiliary roller 33 is supported at a crossing portion between a portion extending in the transport direction and a portion extending in the up-down direction in each of the support portions 341 and 342. As shown in FIGS. 15 and 16, the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 are arranged in order from the downstream side to the upstream side.

  The movable roller 30 moves in the vertical direction as the support portion 34 moves in the vertical direction. FIG. 15 shows a state in which the support portion 34 is disposed at the uppermost position. In this state, portions of the support portions 341 and 342 that extend in the vertical direction are disposed in the vicinity of the upstream side of the film cassette 21 (see FIG. 3) that houses the film roll 22. Further, portions of the support portions 341 and 342 extending in the transport direction are arranged below the film cassette 21. The movable roller 30 is disposed below the film cassette 21. FIG. 16 shows a state in which the support portion 34 is disposed at the lowest position. In this state, portions of the support portions 341 and 342 that extend in the transport direction are disposed below the transport path 103.

  Hereinafter, the path of the guide roller 31 that moves in the vertical direction by the movement of the support portion 34 is referred to as a movement path 104. When the guide roller 31 moves to the lowest position along the movement path 104 (see FIG. 16), the guide roller 31 is disposed below the conveyance path 103. The conveyance path 103 and the movement path 104 intersect. A position where the conveyance path 103 and the movement path 104 intersect is referred to as an intersection position 105.

(7) Cutting section 77
As shown in FIG. 17, a protruding portion 115 protruding rightward is provided on the right side surface of the side plate portion 111 (see FIG. 3). A protruding portion 116 protruding leftward is provided on the left side surface of the side plate portion 112 (see FIG. 3). A guide rail 74 extends between the protrusions 115 and 116. A cutting portion 77 is provided on the guide rail 74. The cutting portion 77 includes a blade portion 771 that protrudes upward from the upper surface. The blade portion 771 extends in the left-right direction. The cutting part 77 is movable in the left-right direction along the guide rail 74. A carriage (not shown) is disposed on the downstream side of the guide rail 74. The carriage is connected to the cutting part 77. The carriage is driven by a motor 225 (see FIG. 25) provided in the protrusion 115. When the motor 225 is driven, the cutting portion 77 moves in the left-right direction along the guide rail 74. When the cutting part 77 moves in the left-right direction along the guide rail 74, the blade part 771 can cut the film 24 in the width direction. As shown in FIG. 16, when the support portion 34 is disposed at the lowest position, the guide roller 31 is disposed above the guide rail 74. A blade portion 771 extending upward from the cutting portion 77 is disposed between the guide roller 31 and the first auxiliary roller 32.

(8) Pedestal guide roller 71, holding roller 72, heating unit 86, rotation suppression unit 80
As shown in FIG. 17, a pedestal guide roller 71 is provided on the upstream side of the portion sandwiched between the side plate portions 111 and 112 (see FIG. 3) and below the conveyance path 103 (see FIG. 16). The pedestal guide roller 71 includes a shaft portion 711 and a plurality of roller portions 712. The shaft portion 711 extends in the left-right direction. The plurality of roller portions 712 are in contact with the conveyance path 103 from below. The pedestal guide roller 71 supports the pedestal 2 transported from the upstream side to the downstream side along the transport 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. 16, when the support portion 34 is disposed at the lowest position, the second auxiliary roller 33 is disposed near the upper portion of the pedestal guide roller 71.

  As shown in FIG. 17, a holding roller 72 is provided on the downstream side of the pedestal guide roller 71. The shape of the holding roller 72 is a cylindrical shape. The holding roller 72 extends in the left-right direction. The right end portion of the holding roller 72 is rotatably supported by the holding portion 781. The left end portion of the holding roller 72 is rotatably supported by the holding portion 782. Hereinafter, the holding units 781 and 782 are collectively referred to as the holding unit 78. The holding part 78 can swing. The holding part 78 is swung by a motor 226 (see FIG. 25). As shown in FIGS. 15 and 16, when the holding portion 78 swings, the holding roller 72 is disposed close to the downstream side of the pedestal guide roller 71 (see FIG. 15) and the pedestal guide roller 71. The state is switched to the state where the holding roller 72 is separated downward (see FIG. 16). As shown in FIG. 15, when the holding roller 72 is arranged close to the downstream side of the pedestal guide roller 71, the holding roller 72 contacts the conveyance path 103 from below. The holding roller 72 can sandwich and support the film 24 discharged from the film cassette 21 (see FIG. 3) between the holding guide roller 71 and the holding guide roller 71 in a state of being arranged close to the downstream side of the mounting guide roller 71.

  As shown in FIG. 17, a heating unit 86 is provided in the vicinity of the downstream side of the holding roller 72. As shown in FIG. 18, the heating unit 86 includes three heating units 87, a holding unit 88, and a pedestal unit 89. The heating unit 87 includes a heater 871 on the upper surface. The heater 871 can contact the film 24 and heat the film 24. The holding portion 88 is a plate-like member that is bent in a substantially U shape in a side view. The holding unit 88 holds the three heating units 87 inside the U shape. The pedestal portion 89 supports the holding portion 88 from below. Rack gears 891 are provided at the left and right ends of the downstream side surface of the pedestal portion 89. The rack gear 891 extends in the vertical direction with the teeth facing downstream. A motor 223 (see FIG. 25) is provided above the bottom portion 10 (see FIG. 3) and between the side plate portions 111 and 112 (see FIG. 3). A pinion gear is provided on the rotation shaft of the motor 223. The pinion gear is fitted to the rack gear 891. As the motor 223 rotates, the pedestal portion 89 moves in the vertical direction. Accordingly, the holding unit 88 provided above the pedestal unit 89 and the three heating units 87 held by the holding unit 88 also move in the vertical direction.

  In a state where the heating unit 86 is disposed at the uppermost position by the motor 223 (see FIG. 17), the upper surfaces of the three heating units 87 are close to the transport path 103. On the other hand, the upper surface of each of the three heating units 87 is separated from the conveyance path 103 in a state where the heating unit 86 is moved by the motor 223 and is disposed at the lowest position (see FIGS. 15 and 16).

  As shown in FIG. 17, a rotation suppression unit 80 is provided on the downstream side of the heating unit 86. The upper side of the rotation suppression unit 80 is covered with the upper plate 100. As shown in FIG. 19, the rotation suppression unit 80 includes a pedestal portion 85. The pedestal portion 85 is fixed above the bottom portion 10 (see FIG. 3) and at a portion sandwiched between the side plate portions 111 and 112 (see FIG. 3). A support portion 84 and two shaft support portions 83 are provided on the upper surface of the pedestal portion 85.

  The support portion 84 is a box extending in the left-right direction. The left and right center portions of the support portion 84 are recessed downstream. A plate body 841 is bridged on the upstream side of the recessed portion. A cylindrical protruding portion 842 protrudes upward from the left and right center portion of the plate body 841. A hole penetrating in the transport direction is provided in each of the left and right end portions of the support portion 84. Two support rods 82 extend from the upstream side surface of the support portion 84 toward the upstream side. A stopper 81 is provided at the upstream end of the two support rods 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 stopper 81 includes a rubber 811 on the upstream side surface.

  The two shaft support portions 83 are provided at both left and right end portions of the pedestal portion 85, respectively. Each of the two shaft support portions 83 supports a shaft 831 extending in the transport direction. The shaft 831 is inserted into a hole provided in the support portion 84. The support portion 84 is movable in the transport direction along the two shafts 831. A spring is interposed between the shaft support portion 83 and the support portion 84. The spring urges the support portion 84 upstream.

  A cam 851 is provided on the pedestal portion 85. The cam 851 is connected to a rotating shaft that extends upward from a motor 224 (see FIG. 25) provided below the pedestal portion 85. The cam 851 is disposed on the downstream side of the support portion 84 and on the upstream side of the plate body 841. The downstream side of the circumferential portion of the cam 851 is in contact with the protruding portion 842. When the cam 851 is rotated by driving the motor 224, the support portion 84 moves in the transport direction. As the support portion 84 moves, the stopper 81 connected to the support portion 84 also moves in the transport direction.

  FIG. 20 shows a state in which the support portion 34 is disposed at the lowest position, the base guide roller 71 and the holding roller 72 are close to each other, the heating portion 86 is disposed at the uppermost position, and the stopper 81 is disposed on the upstream side. The rubber 811 of the stopper 81 is disposed at a position where it can contact the cylindrical portion of the guide roller 31 and is pressed against the guide roller 31 side. The rotation of the guide roller 31 is suppressed. The heating unit 87 of the heating unit 86 protrudes upward between the first auxiliary roller 32 and the holding roller 72. FIG. 21 shows a state in which the support portion 34 is disposed at the uppermost position, the pedestal guide roller 71 and the holding roller 72 are close to each other, the heating portion 86 is disposed at the lowermost position, and the stopper 81 is disposed on the downstream side (FIG. 15). Reference). The upper surfaces of the three heating units 87 (see FIG. 20) of the heating unit 86 arranged at the lowest position are covered with a lid 86A.

(9) Pedestal 2
With reference to FIGS. 22 to 24, the base 2 on which the article 3 to be packaged by the packaging device 1 is placed will be described. The pedestal 2 is produced by bending a plate-like portion 90 that is a substantially rectangular plate body with bent portions 911 and 912. An example of the base 2 is a cardboard board.

  As shown in FIG. 22, the plate-like portion 90 includes two sides 901 and 902 and sides 903 and 904 facing each other. The sides 901 and 902 are sides extending in the longitudinal direction, and the sides 903 and 904 are sides extending in the short direction. The bent portions 911 and 912 are close to the sides 903 and 904, respectively, and extend in the short direction. FIG. 22 shows the base 2 in a state where the plate-like portion 90 is bent in the same direction so that the acute angle becomes 90 degrees by the bent portions 911 and 912. Hereinafter, the short side direction of the plate-like portion 90 is referred to as a conveyance direction, and the long side direction is referred to as a left-right direction. The side 901 side is referred to as the downstream side, the side 902 side is referred to as the upstream side, the bent portion 911 side is referred to as the left side, and the bent portion 912 side is referred to as the right side. The 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, the portion sandwiched between the bent portion 911 and the side 903, and the bent portion 912 and the side. The portions sandwiched between 904 are referred to as second plate portions 906 and 907, respectively. The direction orthogonal to the first plate-like portion 905 is referred to as the up-down direction. The side on which the sides 903 and 904 are arranged is called the upper side, and the opposite side is called the lower side.

  A bottom surface protruding portion 926, a side surface protruding portion 936, and a bottom surface protruding portion 926 are provided in order from the downstream side to the upstream side in respective portions that divide each of the bent portions 911 and 912 into approximately four equal parts in the transport direction. . The bottom protrusion 926 is a portion surrounded by a pair of first bottom cut 921 and second bottom cut 922. The bottom protrusion 926 is disposed on the same plane as the second plate-like portions 906 and 907 and is orthogonal to the first plate-like portion 905. The bottom protrusion 926 protrudes downward with respect to the first plate-like part 905. The side protrusion 936 is a portion surrounded by a pair of first side cut 931 and second side cut 932. The side protrusions 936 are arranged in the same plane as the first plate-like portion 905 and are orthogonal to the second plate-like portions 906 and 907. The side protrusions 936 protrude in the left-right direction with respect to the second plate-like parts 906 and 907. A hole 927 corresponding to the bottom protrusion 926 is formed in the first plate-like portion 905.

  23 and 24 show the pedestal 2 in a state of being placed on the cradle 12. In order to fit the side 901 of the first plate-like portion 905 of the pedestal 2 in the space sandwiched between the first extending portion 612 and the belt 51 in the first transport portion 61, the user moves from the upstream side to the downstream side. The base 2 is moved obliquely downward toward the side. The side 901 of the first plate-like portion 905 of the pedestal 2 moves obliquely downward from the upstream side toward the downstream side, and enters a space sandwiched between the first extending portion 612 and the belt 51. As shown in FIG. 24, the side 901 of the pedestal 2 fits into a space sandwiched between the first extending portion 612 and the belt 51. The first extending portion 612 is in a state of covering the side 901 of the first plate-like portion 905 of the base 2 from above. Since the 1st conveyance part 61 is provided in the belt 51 arrange | positioned on the right-and-left both sides | surfaces of the receiving stand 13, the edge | side 901 of the 1st plate-shaped part 905 of the base 2 is a 1st extension part in the left-right both sides part. The space between the belt 612 and the belt 51 is sandwiched. The second protrusion 621 of the second transport unit 62 fits into the hole 927. The downstream end portion of the hole 927 enters a space sandwiched between the second extending portion 622 and the belt 51. The downstream end of the hole 927 fits in the space. The second extending portion 622 is in a state where the downstream end of the hole 927 is covered from above.

(10) 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 ROM 202, a RAM 203, a sensor 204, an input unit 205, and a heater 871. The CPU 201 controls the entire packaging device 1. The CPU 201 executes a program stored in the ROM 202 to execute a process (packaging process) for packaging the article 3 placed on the base 2 with the film 24. The ROM 202 stores a packaging process program executed by the CPU 201. The RAM 203 stores temporary data. The sensor 204 detects a reflecting plate provided on the outer surface of the belt 51. The input unit 205 is a plurality of input buttons that allow the user to perform an input operation on the packaging device 1. The packaging device 1 includes drive units 211 to 216 and 218 and motors 221 to 226 and 228. The drive units 211 to 216 and 218 drive the motors 221 to 226 and 228, respectively. The CPU 201 is electrically connected to the ROM 202, the RAM 203, the sensor 204, the heater 871, and the drive units 211 to 216 and 218. The drive units 211 to 216 and 218 are electrically connected to the motors 221 to 226 and 228, respectively.

(11) Packaging Process With reference to FIGS. 26 and 27, the packaging process executed by the CPU 201 of the packaging device 1 will be described. 28 to 38 show sectional views taken along the line AA in FIG. When the packaging apparatus 1 is powered on, the CPU 201 starts the packaging process by reading and executing the program stored in the ROM 202.

  CPU201 initializes the state of packaging device 1 (S7). Specifically, it is as follows. The CPU 201 drives the motor 221 by controlling the drive unit 211 to raise the support unit 34 and arrange it at the uppermost position. Accordingly, the movable roller 30 supported by the support portion 34 is disposed at the uppermost position (see FIG. 28). The CPU 201 drives the motor 222 by controlling the drive unit 212, and rotates the belt 51 (see FIG. 28) of the transport mechanism 50. When the sensor 204 detects the reflecting plate, the CPU 201 controls the driving unit 212 to stop driving the motor 222. As a result, the conveying unit 60 protrudes upward from the receiving surface 12A of the receiving tray 12. The packaging device 1 is in a state in which the user can set the pedestal 2 on the receiving surface 12A of the cradle 12.

  The CPU 201 controls the driving unit 213 to drive the motor 223, and lowers the heating unit 86 to place it at the lowest position. As a result, the heater 871 on the upper surface of the heating unit 87 is separated from the transport path 103 (see FIG. 28). The CPU 201 controls the drive unit 214 to drive the motor 224 and move the stopper 81 downstream (see FIG. 28). The CPU 201 controls the driving unit 215 to drive the motor 225 and move the cutting unit 77 to the left side. The CPU 201 controls the driving unit 216 to drive the motor 226 to swing the holding unit 78. The holding roller 72 is in a state of being separated downward from the pedestal guide roller 71 (see FIG. 16). CPU201 controls actuator 218, drives motor 228, and makes torque adjustment mechanism 40 the 1st state (refer to Drawing 10). The torque adjusting mechanism 40 is in a state where no torque is applied to the film gear 26B.

  The CPU 201 receives an operation for designating the torque applied by the torque adjustment mechanism 40 from the user via the input unit 205 (S9). The accepted torque is either strong, medium or weak. The CPU 201 stores information indicating the received torque in the RAM 203 (S11).

  CPU201 judges whether the instruction | indication which starts the packaging by the film 24 of the base 2 and the articles | goods 3 was input via the input part 205 (S12). When the packaging start instruction is not input (S12: NO), the CPU 201 returns the process to S12. The CPU 201 continues to wait for input of a start instruction. After the packaging apparatus 1 is initialized, the user manually pulls the film 24 discharged from the discharge port of the film cassette 21 downward through the upstream side of the second auxiliary roller 33. The film 24 is guided slightly upstream by contacting the upstream side of the second auxiliary roller 33. The user pulls the leading end of the film 24 drawn downward to the lower side of the conveyance path 103 and arranges it on the downstream side of the pedestal guide roller 71 (see FIG. 28).

  The user performs an input operation for notifying the packaging apparatus 1 that the film 24 is ready via the input unit 205. The CPU 201 controls the driving unit 216 to drive the motor 226 to swing the holding unit 78. As the holding portion 78 swings, the holding roller 72 is placed in the vicinity of the downstream side of the base guide roller 71 (see FIG. 28). The leading end of the film 24 discharged from the film cassette 21 is sandwiched from both sides in the transport direction by the pedestal guide roller 71 and the holding roller 72. The film 24 and the transport path 103 intersect in the vicinity of the front end of the film 24. The film 24 is in a state of extending straight in the vertical direction between the upstream side of the second auxiliary roller 33 and the portion sandwiched between the base guide roller 71 and the holding roller 72.

  The user places the pedestal 2 on the cradle 12 (see FIGS. 23 and 24). 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 pedestal 2 is in a state that can be transported downstream by the transport unit 60. The user places the article 3 on the first plate-like portion 905 of the pedestal 2 placed on the cradle 12. The user inputs an instruction to start wrapping the base 2 and the article 3 with the film 24 via the input unit 205.

  As shown in FIG. 26, when a packaging start instruction is input (S12: YES), the CPU 201 controls the driving unit 212 to drive the motor 222. The CPU 201 adjusts the rotation direction of the motor 222 by controlling the drive unit 212 so that the belt 51 rotates in the direction in which the base 2 is conveyed from the upstream side to the downstream side. The motor 222 rotates the belt 51. The belt 51 rotates in a direction (in the direction of the arrow 141 in FIG. 28) in which the conveyance unit 60 protruding upward from the receiving surface 12A of the cradle 12 moves from the upstream side to the downstream side. The transport unit 60 transports the base 2 from the upstream side to the downstream side along the transport path 103 (S13). Hereinafter, the rotation direction of the motor 222 and the belt 51 when the pedestal 2 is conveyed from the upstream side to the downstream side is referred to as a forward direction, and the rotation direction opposite to the forward direction is referred to as a reverse direction.

  As shown in FIG. 28, the downstream end of the pedestal 2 gradually approaches the film 24 extending in the vertical direction. The downstream end (side 901) of the first plate-like portion 905 of the pedestal 2 is in contact with the film 24 and then passes over the holding roller 72. The CPU 201 controls the driving unit 212 to continuously drive the motor 222 to continuously rotate the belt 51 in the forward direction. The pedestal 2 is continuously conveyed downstream.

  As shown in FIG. 29, when the pedestal 2 moves downstream (arrow 142), the side 901 of the first plate-like portion 905 of the pedestal 2 pushes the film 24 downstream. A side 901 of the first plate-like portion 905 of the base 2 approaches the movement path 104 from the upstream side. The pedestal 2 moves further downstream, and the side 901 of the first plate-like portion 905 of the pedestal 2 passes above the heating unit 86. The leading end of the film 24 is sandwiched between the pedestal guide roller 71 and the holding roller 72. 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 film 24 is fed out from the film roll 22, and the film roll 22 rotates. The torque adjustment mechanism 40 is in the first state (see FIG. 10), and no torque is applied to the film gear 26B. Therefore, the tension acting on the film 24 is weak. The film 24 is smoothly fed out from the film roll 22.

  The CPU 201 confirms that the side 901 of the first plate-like portion 905 of the pedestal 2 has moved downstream by a predetermined distance with respect to the upper position of the heating portion 86 in S13 (see FIG. 26). Detection is based on the number of rotations of the motor 222 after the start of conveyance. When the side 901 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance downstream from the upper position of the heating portion 86, the CPU 201 controls the motor 212 to control the motor as shown in FIG. The drive of 222 is stopped, and the conveyance to the downstream side of the base 2 is stopped (S15).

  CPU201 controls actuator 213, drives motor 223, and raises heating part 86 (S17). After the heating unit 86 is placed at the uppermost position, the CPU 201 controls the driving unit 213 to stop driving the motor 223 and stop the heating unit 86 from rising. As shown in FIG. 30, when the heating unit 86 rises to the top (arrow 143), the upper surface of the heating unit 87 of the heating unit 86 is in a state of being close to the transport path 103 from below. The side 901 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance downstream from the upper position of the heating portion 86, and the film 24 is placed on the lower surface of the first plate-like portion 905 of the pedestal 2. Wrap around. Therefore, the upper surface of the heating unit 87 is in a state where the film 24 is sandwiched between the lower surface of the first plate-like portion 905 of the pedestal 2 in a state where the heating portion 86 is disposed at the uppermost position.

  As shown in FIG. 26, the CPU 201 heats the heater 871 of the heating unit 86 (S19). The heater 871 heats and melts the front end of the film 24. The front end of the melted film 24 is adhered to the vicinity of the side 901 in the lower surface of the first plate-like portion 905 of the base 2 (S19). The CPU 201 stops the heating of the heater 871 after a predetermined time has elapsed since the heating of the heater 871 was started (S20). The predetermined time is a time required for heating the temperature of the film 24 to the melting point by the heater 871. CPU201 controls actuator 213, drives motor 223, and lowers heating part 86 (S21, arrow 144 (refer to Drawing 31)). The upper surface of the heating unit 87 of the heating unit 86 is separated from the conveyance path 103. After the heating unit 86 is disposed at the lowest position, the CPU 201 controls the driving unit 213 to stop driving the motor 223 and stop the lowering of the heating unit 86.

  The CPU 201 controls the drive unit 216 to drive the motor 226 and swings the holding unit 78 (S23). As shown in FIG. 31, the holding roller 78 swings in the direction of the arrow 145, so that the holding roller 72 is separated downward with respect to the base guide roller 71. The pedestal guide roller 71 and the holding roller 72 release the front end of the sandwiched film 24. The leading end of the film 24 is melted by the heater 871 heated in S19 and adhered to the lower surface of the pedestal 2. As shown in FIG. 26, the CPU 201 controls the drive unit 212 to drive the motor 222, rotates the belt 51 in the forward direction, and conveys the base 2 to the downstream side (S25).

  As shown in FIG. 31, the transport unit 60 moves from the upstream side to the downstream side along the transport path 103, and transports the base 2 to the downstream side (arrow 146). The leading end of the film 24 is released from the pedestal guide roller 71 and the holding roller 72. The leading end of the film 24 is moved to the downstream side as the pedestal 2 moves while being adhered to the lower surface of the pedestal 2. The film 24 is fed out from the film roll 22, and the film roll 22 rotates. The torque adjustment mechanism 40 is in the first state (see FIG. 10), and no torque is applied to the film gear 26B. Therefore, the tension acting on the film 24 is weak. The film 24 is smoothly fed out from the film roll 22. The side 901 of the first plate-like portion 905 of the pedestal 2 crosses the intersection position 105 where the transport path 103 and the movement path 104 intersect from the upstream side toward the downstream side. The pedestal 2 moves further downstream (arrow 146). 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 are pressed against the film 24. The film 24 bends at the side 901 of the first plate-like portion 905 of the base 2 and the contact portion with the article 3. The CPU 201 controls the driving unit 212 to continuously drive the motor 222 to continuously rotate the belt 51 in the forward direction. The first transport unit 61 moves onto the cradle 13, and the downstream side of the base 2 is transported to the cradle 13.

  The base 2 is continuously conveyed to the downstream side, and 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. An upstream end (side 902) of the first plate-like portion 905 of the base 2 passes over the base guide roller 71. Further, the base 2 is conveyed downstream (arrow 146). The 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 extending from the film roll 22 contacts the upstream side of the second auxiliary roller 33 and is slightly guided upstream, contacts the lower side of the second auxiliary roller 33 and extends downstream, and the first auxiliary roller 32 is in contact with the lower side of 32 and extends further downstream, and reaches the side 901 of the first plate-like portion 905 of the base 2 and the downstream side of the article 3. The guide roller 31 is disposed above the film 24 extending between the first auxiliary roller 32 and the base 2 and the article 3.

  As shown in FIG. 26, the CPU 201 starts conveying the side 902 of the first plate-like portion 905 of the pedestal 2 to the downstream side of the intersection position 105, and starts conveying the pedestal 2 to the downstream side in S25. It detects based on the rotation speed of the motor 222 from. When the side 902 of the first plate-like portion 905 of the pedestal 2 moves to the downstream side of the intersection position 105, the CPU 201 controls the drive unit 212 to stop driving the motor 222 and stop the conveyance of the pedestal 2. (S26). CPU201 performs load control processing (refer to Drawing 27) (S32).

  The load control process will be described with reference to FIG. The CPU 201 reads information indicating the torque (either strong, medium, or weak) stored in S11 (see FIG. 26) from the RAM 203. The CPU 201 controls the drive unit 218 to drive the motor 228 so that the torque adjustment mechanism 40 applies a torque corresponding to the read information to the film gear 26B, and rotates the swing plate 46. When the torque corresponding to the information read from the RAM 203 is weak, the CPU 201 causes the first gear 41 and the fourth gear 44 to mesh. As a result, the CPU 201 switches the torque adjustment mechanism 40 from the first state (see FIG. 10) to the second state (see FIG. 11). When the torque corresponding to the information read from the RAM 203 is medium, the CPU 201 causes the second gear 42 and the fourth gear 44 to mesh. As a result, the CPU 201 switches the torque adjustment mechanism 40 from the first state (see FIG. 10) to the third state (see FIG. 12). When the torque corresponding to the information read from the RAM 203 is strong, the CPU 201 causes the third gear 43 and the fourth gear 44 to mesh. As a result, the CPU 201 switches the torque adjustment mechanism 40 from the first state (see FIG. 10) to the fourth state (see FIG. 13). Thereby, when the film roll 22 rotates in the rotation direction when the film 24 is fed, the torque adjustment mechanism 40 torques in the direction opposite to the rotation direction with respect to the film gear 26B with the strength according to the state. Can be added (S51).

  The CPU 201 controls the drive unit 211 to drive the motor 221 to move the support unit 34 downward. The guide roller 31 supported by the support portion 34 starts to move from the uppermost side to the lowermost side along the movement path 104 (S53). When the guide roller 31 guides the film 24 downward, the film 24 is fed out from the film roll 22. When the film gear 26B rotates with the rotation of the film roll 22, the torque adjusting mechanism 40 applies a torque having a strength corresponding to the state (any one of the second to fourth states) to the film gear 26B. Therefore, when the guide roller 31 guides the film 24, the tension acting on the film 24 is increased. The film 24 is pressed against the upstream side of the article 3 by strong tension and is in close contact with the article 3. The CPU 201 detects that the guide roller 31 is disposed at the lowest position based on the number of rotations of the motor 221 after the downward movement of the guide roller 31 is started in S53. When the guide roller 31 moves to the lowest position, the CPU 201 stops driving the motor 221 and stops the downward movement of the guide roller 31 (S55).

  As shown in FIG. 32, the guide roller 31 moves downward along the movement path 104 (arrow 147) and is arranged at the lowest position. The guide roller 31 is in contact with the conveyance path 103 from below. The film 24 is disposed at a position that covers the first plate-like portion 905 of the base 2 and the upstream side of the article 3.

  The film 24 extends from the portion of the pedestal 2 that contacts the side 902 of the first plate-like portion 905 toward the guide roller 31, contacts the downstream side and the lower side of the guide roller 31, and extends to the upstream side. It contacts the lower side of the roller 32 and extends further upstream, and contacts the lower side and the upstream side of the second auxiliary roller 33 to reach the film roll 22. A portion of the film 24 between the portion that contacts the lower side of the guide roller 31 and the portion that contacts the lower end of the first auxiliary roller 32 extends in a substantially horizontal direction and extends upward from the cutting portion 77. It will be in the state arrange | positioned below the upper end of (refer FIG. 34). In addition, in the state (refer S7) in which the packaging apparatus 1 was initialized, since the cutting | disconnection part 77 is the state which moved to the left side, the film 24 and the blade part 771 do not contact at this time.

  As shown in FIG. 27, the CPU 201 controls the driving unit 212 to drive the motor 222 to rotate the belt 51 in the reverse direction. The transport unit 60 moves from the downstream side to the upstream side, and transports the base 2 to the upstream side along the transport path 103 (S57). The pedestal 2 is conveyed in the reverse direction (the direction from the downstream side toward the upstream side). As shown in FIG. 33, when the pedestal 2 moves from the downstream side to the upstream side (arrow 148), the side 902 of the first plate-like portion 905 of the pedestal 2 approaches the intersection position 105 from the downstream side. 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 side 902 of the first plate-like portion 905 of the pedestal 2 passes above the heating unit 86 and moves upstream. The guide roller 31 relatively moves toward the downstream side from the side 902 while being in contact with the lower surface of the first plate-like portion 905 of the base 2 from below. 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.

  As the pedestal 2 is transported upstream, the film 24 is further fed out from the film roll 22. Since the torque adjusting mechanism 40 applies torque when the film gear 26B rotates, when the pedestal 2 is conveyed upstream, the tension acting on the film 24 is further increased. The film 24 is pressed against the upstream side of the article 3 by a stronger tension and is in close contact with the article 3.

  As shown in FIG. 34, the film 24 extends downstream from the portion that contacts the side 902 of the first plate-like portion 905 of the pedestal 2 along the lower surface of the first plate-like portion 905, with respect to the guide roller 31. Wrapping from the upper side to change the direction, extending from the lower side of the guide roller 31 to the upstream side, contacting the lower side of the first auxiliary roller 32 and extending further to the upstream side, lower side and upstream side of the second auxiliary roller 33 To the film roll 22.

  As shown in FIG. 27, the CPU 201 indicates that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved upstream by a predetermined distance with respect to the upper position of the heating portion 86, in S53, on the upstream side of the pedestal 2. It is detected based on the number of rotations of the motor 222 after the conveyance to the motor is started. When 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 heating unit 86, the CPU 201 controls the driving unit 212 to stop driving the motor 222, and 2 is stopped (S59). The CPU 201 controls the drive unit 214 to drive the motor 224, and moves the stopper 81 of the rotation suppression unit 80 to the upstream side (S61). The CPU 201 ends the load control process and returns the process to the packaging process (see FIG. 26).

  As shown in FIG. 35, the guide roller 31 that has moved to the lowest position is disposed on the upstream side of the stopper 81 of the rotation suppressing unit 80. When the stopper 81 moves upstream (arrow 149), the rubber 811 of the stopper 81 comes close to the guide roller 31 and sandwiches the film 24 wound around the guide roller 31 with the guide roller 31. When the rubber 811 of the stopper 81 pushes the guide roller 31 upstream through the film 24, the rotation of the guide roller 31 is prohibited. The film 24 is sandwiched between the guide roller 31 and the rubber 811 of the stopper 81.

  As shown in FIG. 26, the CPU 201 controls the drive unit 215 to drive the motor 225, and moves the cutting unit 77 from the left side to the right side along the guide rail 74 (see FIG. 17) (S33). As shown in FIG. 34, the upper end of the blade portion 771 of the cutting portion 77 is disposed above the film 24 extending substantially horizontally between the lower side of the guide roller 31 and the lower side of the first auxiliary roller 32. For this reason, when the cutting part 77 moves to the right side, the film 24 is cut by the blade part 771 at a portion extending between the guide roller 31 and the first auxiliary roller 32. The cutting part 77 separates the part of the film 24 that covers the first plate-like part 905 and the article 3 of the pedestal 2 from the part wound around the film roll 22. As shown in FIG. 36, after the film 24 is cut, the cut end of the film 24 extending from the film roll 22 hangs down on the lower side of the pedestal guide roller 71.

  As shown in FIG. 26, the CPU 201 controls the drive unit 216 to drive the motor 226 and swings the holding unit 78 (S35). As shown in FIG. 37, the holding portion 78 swings in the direction of the arrow 150. The holding roller 72 is disposed in the vicinity of the downstream side of the pedestal guide roller 71. 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. 26, the CPU 201 controls the drive unit 213 to drive the motor 223 and raise the heating unit 86 (S37). After the heating unit 86 is placed at the top, the CPU 201 controls the drive unit 213 to stop driving the motor 223 and stop the heating unit 86 from rising. As shown in FIG. 37, the upper surface of the heating unit 87 of the heating unit 86 is close to the transport path 103 from below with the heating unit 86 raised to the top (arrow 151). Note that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved upstream by a predetermined distance from the position above the heating portion 86. In the vicinity of the side 902 in the lower surface of the first plate-like portion 905 of the base 2, the film 24 guided by the guide roller 31 is arranged along the lower surface. Therefore, when the heating unit 86 is raised and arranged at the uppermost position, the upper surface of the heating unit 87 is in a state where the film 24 is sandwiched between the base 2 and the upper surface.

  As shown in FIG. 26, the CPU 201 heats the heater 871 of the heating unit 86 (S39). The heater 871 heats the end portion of the film 24 cut by the cutting portion 77 to melt the film 24. The melted film 24 is bonded to the vicinity of the side 902 of the first plate-like portion 905 of the base 2 (S39). The film 24 cut from the film roll 22 is in a state of covering the base 2 and the article 3.

  The CPU 201 stops the heating of the heater 871 after a predetermined time has elapsed since the heating of the heater 871 was started in S39 (S40). CPU201 controls actuator 213, drives motor 223, and lowers heating part 86 (S41, arrow 152 (refer to Drawing 38)). The upper surface of the heating unit 87 is separated from the conveyance path 103. After the heating unit 86 is disposed at the lowest position, the CPU 201 controls the driving unit 213 to stop the rotation of the motor 223.

  The CPU 201 controls the driving unit 214 to drive the motor 224, and moves the stopper 81 of the rotation suppressing unit 80 to the downstream side (S43, arrow 153 (see FIG. 38)). The stopper 81 moves downstream, and the rubber 811 provided on the stopper 81 is separated from the guide roller 31. The guide roller 31 is in a rotatable state.

  The CPU 201 controls the drive unit 212 to drive the motor 222, rotates the belt 51 in the forward direction, and conveys the base 2 to the downstream side (S45). The pedestal 2 and the article 3 that have been packaged are conveyed downstream. The CPU 201 confirms that the first transport unit 61 has moved downstream and has reached the downstream end of the cradle 13, and the rotation of the motor 222 after starting the transport of the pedestal 2 to the downstream side in S 45. Detect based on the number. When the first transport unit 61 moves downstream and reaches the downstream end of the cradle 13, the CPU 201 controls the drive unit 212 to stop driving the motor 222 and stop transporting the pedestal 2. (S46). The packaging process ends.

  As described above, the packaging device 1 can apply a strong tension to the film 24 by applying torque to the film gear 26B of the film roll 22 during the packaging process. It can be adhered. The packaging device 1 applies torque to the film gear 26B by the torque adjusting mechanism 40 at any timing during the period after the film 24 is adhered to the downstream side of the pedestal 2 and before the conveyance to the upstream side of the pedestal 2 is started. It is in a state that can be added. As a result, the packaging device 1 can be adjusted so that the force that the film 24 exerts on the base 2 and the article 3 due to the tension acting on the film 24 does not become excessive as compared with the case where torque is constantly applied to the film gear 26B. Therefore, the packaging device 1 can prevent the tension acting on the film 24 from preventing the pedestal 2 and the article 3 from being conveyed and preventing the pedestal 2 and the article 3 from being properly conveyed. Further, the packaging device 1 can prevent the base 2 and the article 3 from being deformed due to excessive tension acting on the film 24. Furthermore, since the packaging device 1 can make the film 24 adhere to the article 3 by applying an appropriate tension to the film 24, the article 3 can be appropriately packaged by the film 24.

  The packaging device 1 starts the conveyance to the downstream side of the pedestal 2 in S25, finishes the conveyance in S26, and then adjusts the torque within a period from the start of the downward movement of the guide roller 31 in S53. The state of the mechanism 40 is switched from the first state to any one of the second to fourth states. As a result, when the film 24 is fed from the film roll 22 as the guide roller 31 moves, torque is applied in the direction opposite to the rotation direction of the film gear 26B. In this case, the packaging device 1 can attach the film 24 to the upstream portion of the article 3. Accordingly, the packaging device 1 can appropriately package a specific portion (upstream portion) of the article 3 with the film 24.

  The packaging device 1 engages any one of the first gear 41, the second gear 42, and the third gear 43 with the fourth gear 44, so that any of the first load 411, the second load 421, and the third load 431 is engaged. In this state, torque can be applied to the film gear 26B. Further, the packaging device 1 is in a state in which no torque is applied to the film gear 26 </ b> B by setting the fourth gear 44 in a state where it does not mesh with any of the first gear 41 to the third gear 43 (first state). Therefore, the packaging device 1 can appropriately adjust the tension applied to the film 24 during packaging of the base 2 and the article 3 with the film 24 according to the process of the packaging operation. Thus, the packaging device 1 can appropriately package the base 2 and the article 3 with the film 24.

  The packaging device 1 can change the strength of the torque applied by the torque adjustment mechanism 40 according to the user's input operation (S9, S11). For this reason, the packaging device 1 can change the tension acting on the film 24 in accordance with a user instruction. Therefore, the packaging device 1 can appropriately wrap the pedestal 2 and the article 3 of different materials with the film 24 by adjusting the tension of the film 24 according to the pedestal 2 and the article 3. For example, the packaging device 1 can prevent the pedestal 2 and the article 3 from being deformed during packaging by reducing the torque according to the material of the pedestal 2 and the article 3 and reducing the tension of the film 24.

  The packaging device 1 is in a state in which torque can be applied to the film gear 26B after the film 24 is bonded to the downstream end of the base 2 in S19. The packaging device 1 can apply strong tension to the film 24 when the film 24 is fed out from the film roll 22 by the guide roller 31 guiding the film 24. Therefore, since the packaging apparatus 1 can strongly adhere the film 24 to the article 3, the pedestal 2 and the article 3 can be appropriately packaged by the film 24.

  A modification of the present invention will be described with reference to FIGS. In the modification, the CPU 201 executes the load control process of FIGS. 39 and 40 instead in S32 of the packaging process (see FIG. 26). The difference between the load control process of FIGS. 39 and 40 and the load control process of FIG. 27 is the timing at which the state of the torque adjustment mechanism 40 is switched from the first state to any one of the second to fourth states.

<First Modification>
With reference to FIG. 39, the load control process in a 1st modification is demonstrated. The CPU 201 controls the drive unit 211 to drive the motor 221 to move the support unit 34 downward. The guide roller 31 starts to move from the uppermost side to the lowermost side along the movement path 104 (S53). The CPU 201 controls the drive unit 218 to drive the motor 228 while the guide roller 31 is moving, and rotates the swing plate 46. The fourth gear 44 meshes with any of the first gear 41, the second gear 42, and the third gear 43. As a result, the CPU 201 switches the torque adjustment mechanism 40 from the first state (see FIG. 10) to any one of the second to fourth states (see FIGS. 11, 12, and 13). As a result, the torque adjusting mechanism 40 is in a state where it is possible to apply a torque having a strength corresponding to the state to the film gear 26B (S71).

  Since the guide roller 31 guides the film 24 downward, the film 24 is fed from the film roll 22. When the film gear 26B rotates with the rotation of the film roll 22, the torque adjusting mechanism 40 applies torque to the film gear 26B. Therefore, when the guide roller 31 guides the film 24, the tension acting on the film 24 is increased. The film 24 is pressed against the upstream side of the article 3 by a strong tension according to the state of the torque adjusting mechanism 40 and is in close contact with the article 3. When the guide roller 31 moves to the lowest position, the CPU 201 stops driving the motor 221 and stops the downward movement of the guide roller 31 (S55). Since the process of S57-S63 is the same as the load control process of FIG. 27, description is abbreviate | omitted.

  As described above, in the first modification, the packaging device 1 switches the state of the torque adjustment mechanism 40 from the first state to any one of the second to fourth states while the guide roller 31 is moving. Thus, the packaging device 1 can appropriately adhere the film 24 to the upstream portion of the article 3. Therefore, the packaging device 1 can reliably package a specific portion (upstream portion) of the article 3 with the film 24. Moreover, the packaging apparatus 1 makes the timing which switches the state of the torque adjustment mechanism 40 slower than the case of the said embodiment, and the strong tension | tensile_strength which acts on the film 24 is the edge part of the downstream of the base 2 and the articles | goods 3 In particular, it is possible to prevent the force from being applied. For this reason, the packaging apparatus 1 can appropriately prevent the conveyance of the base 2 and the article 3 by the film 24. The packaging device 1 can appropriately prevent the base 2 and the article 3 from being deformed by the film 24.

<Second Modification>
With reference to FIG. 40, the load control process in a 2nd modification is demonstrated. The CPU 201 controls the drive unit 211 to drive the motor 221 to move the support unit 34 downward. The guide roller 31 starts to move from the uppermost side to the lowermost side along the movement path 104 (S53). When the guide roller 31 moves to the lowest position, the CPU 201 stops driving the motor 221 and stops the downward movement of the guide roller 31 (S55). The CPU 201 controls the drive unit 218 to drive the motor 228 while the guide roller 31 is moving, and rotates the swing plate 46. The fourth gear 44 meshes with any of the first gear 41, the second gear 42, and the third gear 43. As a result, the CPU 201 switches the torque adjustment mechanism 40 from the first state (see FIG. 10) to any one of the second to fourth states (see FIGS. 11, 12, and 13). As a result, the torque adjusting mechanism 40 is in a state where torque can be applied to the film gear 26B (S73).

  The CPU 201 controls the drive unit 212 to drive the motor 222 and rotate the belt 51 in the reverse direction. The transport unit 60 moves from the downstream side to the upstream side, and transports the base 2 to the upstream side along the transport path 103 (S57). As the pedestal 2 is transported upstream, the film 24 is further fed out from the film roll 22. Since the torque adjusting mechanism 40 applies torque when the film gear 26B rotates, the tension acting on the film 24 becomes stronger when the pedestal 2 is transported upstream. The film 24 is pressed against the upstream side of the article 3 by a strong tension according to the state of the torque adjusting mechanism 40 and is in close contact with the article 3. The processing of S59 and S61 is the same as the load control processing of FIG.

  As described above, in the second modification, the packaging device 1 switches the state of the torque adjustment mechanism 40 from the first state to any one of the second to fourth states after the guide roller 31 moves. Thus, the packaging device 1 can appropriately adhere the film 24 to the upstream portion of the article 3. Therefore, the packaging device 1 can reliably package a specific portion (upstream portion) of the article 3 with the film 24. In addition, the packaging device 1 causes the strong tension acting on the film 24 to be applied to the pedestal 2 and the article 3 by making the timing of applying the tension to the film 24 by the torque adjusting mechanism 40 slower than in the case of the first modification. It is possible to further prevent the force from being applied to the downstream end. For this reason, the packaging device 1 can further appropriately prevent the film 24 from preventing the pedestal 2 and the article 3 from being conveyed.

  The present invention is not limited to the above embodiment, and various modifications can be made. The timing at which the CPU 201 of the packaging device 1 controls the drive unit 218 to drive the motor 228 and switches the torque adjustment mechanism 40 from the first state to any one of the second to fourth states is any of S19 to S57. Can change to timing. For example, the CPU 201 adjusts the torque adjustment mechanism at any timing after the film 24 is adhered to the downstream end of the pedestal 2 in S19 and before the conveyance of the pedestal 2 and the article 3 to the downstream side is started in S25. 40 may be switched from the first state to any one of the second to fourth states. In addition, the torque adjusting mechanism 40 is turned on at any timing from the start of conveyance of the pedestal 2 and the article 3 to the downstream side in S25 to the end of conveyance of the pedestal 2 and the article 3 to the downstream side in S26. You may switch from the first state to any of the second to fourth states. In this case, the film 24 can be adhered to the downstream portion of the article 3. Therefore, the packaging device 1 can reliably package the entire area of the article 3 with the film 24.

  In the first modification, the timing at which the CPU 201 of the packaging device 1 performs the process of S71 may be immediately after the guide roller 31 starts moving downward from the highest position, or immediately before the guide roller 31 reaches the lowest position. Good.

  When the torque adjustment mechanism 40 is switched from the first state to the second state in S51, S71, and S73, the CPU 201 of the packaging device 1 returns the torque adjustment mechanism 40 from the second state to the first state after the process of S61. May be. In addition, when the torque adjustment mechanism 40 is switched to the third state in S51, S71, and S73, the CPU 201 may switch the torque adjustment mechanism 40 to the first state or the second state after the process of S61. In addition, when the torque adjustment mechanism 40 is switched to the fourth state in S51, S71, and S73, the CPU 201 may switch the torque adjustment mechanism 40 to any of the first to third states after the process of S61.

  The torque adjustment mechanism 40 may include a clutch. The torque adjustment mechanism 40 may switch the torque applied to the film gear 26B by switching the clutch engagement / disengagement.

  The guide roller 31 corresponds to the “guide unit” of the present invention. The CPU 201 that performs the process of S19 corresponds to the “first bonding unit” of the present invention. The CPU 201 that performs the process of S25 corresponds to the “first transport unit” of the present invention. The CPU 201 performing the process of S53 corresponds to the “moving means” of the present invention. The CPU 201 that performs the process of S57 corresponds to the “second transport unit” of the present invention. The torque adjustment mechanism 40 corresponds to the “load means” of the present invention. The CPU 201 that performs the processes of S51, S71, S73, and S75 corresponds to the “switching unit” of the present invention. The CPU 201 that performs the processes of S9 and S11 corresponds to the “changing unit” of the present invention.

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 2 Base 3 Article 21 Film cassette 22 Film roll 24 Film 30 Movable roller 31 Guide roller 40 Torque adjustment mechanism 50 Conveyance mechanism 60 Conveyance part 87 Heating unit 103 Conveyance path 104 Movement path 105 Crossing position 201 CPU
871 Heater 901, 902 side

Claims (6)

A packaging device for packaging a pedestal and an article placed on the pedestal with a film,
A transport mechanism for transporting the pedestal on which the article is placed;
A guide that is movable along a movement path extending in a direction intersecting with a conveyance path through which the pedestal conveyed by the conveyance mechanism passes, and for guiding the film;
First bonding means for bonding a part of the film to the pedestal;
After adhering a part of the film to the pedestal by the first adhering means, the pedestal is moved from the upstream side to the downstream side in the conveyance direction with respect to the intersection position where the conveyance path and the movement path intersect. First conveying means for controlling the conveying mechanism for conveying;
Moving means for transferring the pedestal by the first conveying means and moving the guide portion along the movement path when the upstream end of the pedestal moves to the downstream side of the crossing position. When,
Second transport means for controlling the transport mechanism to transport the pedestal to the upstream side after moving the guide portion by the moving means;
Loading means for applying a load in a direction opposite to the feeding direction of the film;
Switching means for switching between a state in which the load means can apply the load and a state in which the load cannot be applied, and
The switching means is any one of the periods from the time when the part of the film is adhered to the pedestal by the first adhering means until the second conveying means starts conveying the pedestal to the upstream side. A packaging device, wherein the load means is switched to a state where the load can be applied at a timing. The switching means is
In a state where the load can be applied at any timing in a period from the start of the transport of the pedestal by the first transport unit to the start of the movement of the guide unit by the moving unit. The packaging device according to claim 1, wherein the load means is switched. The switching means is
In a state where the load can be applied at any timing in a period from the start of the movement of the guide unit by the moving unit to the start of the transfer of the pedestal by the second transfer unit. The packaging device according to claim 1, wherein the load means is switched. The load means is
4. The load according to claim 1, wherein a load is applied to the film in the opposite direction by applying a torque when the film roll around which the film is wound rotates around the winding center. 5. The packaging device described. A heating unit including at least a heater;
5. The first adhering means adheres a part of the film to the downstream end of the pedestal by heating a part of the film with the heating unit. A packaging device according to any one of the above.   6. The packaging apparatus according to claim 1, further comprising a changing unit that changes a load applied by the load unit.

Images