JP2014218297A - Packaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging device which can package a large article in a film in spite of its small size.SOLUTION: A transport part is moved from a first position to a third position in a state where a film guided from a guide roller in an upper guide position to a heating part crosses a transport path (S27). The heating part attaches the film to a first base end part (S33). The transport part is moved from the third position to a fifth position (S39). The guide roller is moved from the upper guide position to a lower guide position, and an article placed on the base is covered with the film. The transport part is moved from the fifth position to a fourth position in a state where the film extending from the guide roller toward the article crosses the transport path. The heating part attaches the film to a second base end part. The transport part is moved from the fourth position to a second position.

Description

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

  A packaging apparatus for packaging an article by covering the article placed on a mount such as cardboard with a film has been proposed. The packaging apparatus covers a film on the upper side of an article, and wraps the end portion of the film on a surface (hereinafter referred to as a “lower surface”) opposite to the side on which the article is placed of the mount. The end of the film is fixed to the lower surface of the mount. The film is tensioned and the article is secured on the mount by the film. The film adheres to the article, and the handler cannot directly touch the article from the outside. The article is protected by a film.

  For example, Patent Document 1 discloses a technique in which a film is closely attached to the periphery of an article by a receiving member that guides the film orbiting the periphery of the article. By applying this technique to the above-described packaging device, the packaging device can adhere the film around the article placed on the mount.

JP-A-1-111604

  When the technique described in Patent Document 1 is applied to a packaging device, the article cannot be packaged with a film unless the circulation path of the receiving member is made larger than the article. For this reason, in order to make it the structure which can package a big article, there exists a problem that a packaging apparatus must be enlarged.

  An object of the present invention is to provide a packaging apparatus capable of packaging a large article with a film even if it is small.

  A packaging apparatus according to an aspect of the present invention is a packaging apparatus that wraps an article placed on a pedestal with a film together with the pedestal, and transporting means capable of transporting the pedestal along a predetermined transport path; An adhesive means for adhering the film to the pedestal conveyed by the conveying means, and a member for guiding the film toward the adhesive means, along a movement path extending in a direction crossing the conveyance path Movable guiding means, and control means for controlling the operation of the packaging device. The transport path includes, as the position of the pedestal, a start position where the pedestal before being wrapped with the film is disposed, an end position where the pedestal after being wrapped with the film is disposed, and the bonding means. Is a first bonding position where the film can be bonded to a first pedestal end which is an end in the first direction of the pedestal, and a second pedestal end where the bonding means is an end in the second direction of the pedestal And a second bonding position where the film can be bonded, and an avoidance position where the entire pedestal is positioned in the first direction with respect to the movement path). The first direction is a direction from the start position toward the end position, and the second direction is a direction from the end position toward the start position. The first adhesion position, the second adhesion position, and the avoidance position are provided between the start position and the end position, and the avoidance position is provided in the first direction with respect to the second adhesion position. On the other hand, the first bonding position is provided in the second direction with respect to the second bonding position. The guiding means is between a first guiding position disposed on a different side from the bonding means with respect to the transport path and a second guiding position disposed on the same side as the bonding means with respect to the transport path. Can be moved along the movement path.

  In the state where the guiding means is at the first guiding position and the film guided from the guiding means to the bonding means crosses the conveying path, the control means moves the pedestal by the conveying means. When the pedestal is conveyed to the first adhesion position by the first conveyance control means for conveying from the start position to the first adhesion position and the first conveyance control means, the adhesion means causes the first pedestal end to First adhesion control means for adhering the film, and when the film is adhered to the first pedestal end by the first adhesion control means, the conveyance means causes the pedestal to be moved from the first adhesion position to the avoidance position. And when the pedestal is transported to the avoidance position by the second transport control means, the guide means is moved to the first guide position. To the second guidance position, the guidance control means for covering the article placed on the pedestal with the film, and the guidance control means moves the guidance means to the second guidance position. A third conveyance control means for conveying the pedestal from the avoidance position to the second adhesion position by the conveyance means in a state where the film extending from the guiding means toward the article intersects the conveyance path; A second adhesion control means for adhering the film to the second pedestal end by the adhesion means when the pedestal is conveyed to the second adhesion position by the third conveyance control means; and the second adhesion control. When the film is adhered to the second pedestal end by means, the pedestal is conveyed from the second adhesion position to the end position by the conveying means. A fourth conveyance control means for setting, and a tension setting means for setting a tension of the film for packaging the article on the pedestal, wherein at least one of the second conveyance control means and the third conveyance control means is the The conveyance amount of the pedestal is changed according to the tension set by the tension setting means.

  In the packaging apparatus of the said aspect, a base is conveyed from a starting position to a 1st adhesion position in the state which the film guided to the adhesion | attachment means from the guidance means in a 1st guidance position cross | intersects a conveyance path | route. The film is bonded to the end of the first pedestal by the bonding means. The pedestal is conveyed from the first adhesion position to the avoidance position. By moving the guiding means from the first guiding position to the second guiding position, the article placed on the pedestal is covered with the film. The pedestal is conveyed from the avoidance position to the second adhesion position in a state where the film extending from the guide means toward the article crosses the conveyance path. The film is bonded to the second pedestal end by the bonding means. The pedestal is conveyed from the second bonding position to the end position. When the pedestal is conveyed from the first adhesion position to the avoidance position, and when the pedestal is conveyed from the avoidance position to the second adhesion position, the conveyance amount of the pedestal can be changed according to the set tension.

  According to this, in the process of moving the pedestal along the conveyance path, the article and the pedestal are packaged with the film by moving the guide portion along the movement path. Since the guide part does not move over the entire periphery of the article and the pedestal, the movement path of the guide part becomes small, and the packaging device is downsized. For this reason, even if the packaging device is small, it is possible to wrap the article on the base by covering the periphery of the large article with a film. Furthermore, by changing the transport amount of the pedestal with the set tension, the article on the pedestal can be accurately packaged with the film regardless of the tension of the film.

  The second conveyance control unit may increase the conveyance amount of the pedestal as the tension set by the tension setting unit increases. In this case, the greater the set tension, the greater the transport amount of the pedestal that is transported from the first adhesion position to the avoidance position. That is, the greater the film tension, the greater the amount of movement of the pedestal in the first direction. Thereby, the articles on the pedestal can be accurately packaged by the film regardless of the tension of the film.

  The third transport control unit may increase the transport amount of the pedestal as the tension set by the tension setting unit is larger. In this case, the greater the set tension, the greater the transport amount of the pedestal that is transported from the avoidance position to the second adhesion position. That is, the greater the film tension, the greater the amount of movement of the pedestal in the second direction. Thereby, the articles on the pedestal can be accurately packaged by the film regardless of the tension of the film.

  The bonding means can heat and weld the film to the first pedestal end of the pedestal at the first bonding position and the second pedestal end of the pedestal at the second bonding position. And at least one of the first adhesion control means and the second adhesion control means changes a welding time, which is a time for heating the film, according to the tension set by the tension setting means. May be. In this case, the film can be welded with a constant strength regardless of the tension of the film by changing the welding time of the film according to the set tension.

  The second adhesion control unit may shorten the welding time as the tension set by the tension setting unit increases. In this case, the larger the set tension, the shorter the film welding time with respect to the second pedestal end. That is, the smaller the film tension, the longer the film is welded to the second pedestal end. Therefore, even when the tension of the film for packaging the article on the pedestal is small, the film can be reliably welded to the second pedestal end.

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 where case 800 was equipped). It is the perspective view which looked at the packaging apparatus 1 (state which removed the housing | casing 800) from the upstream. It is the perspective view which looked at the packaging apparatus 1 (state which removed the housing | casing 800) from the downstream. 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. 4 is a right side view of the downstream side of the cradle 13. FIG. 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. 3 is a perspective view of a movable roller 30. FIG. It is a right view of the state which the support part 34 raised. It is a right view of the state which the support part 34 lowered | hung. FIG. 5 is a perspective view of a pedestal guide roller 71, a holding roller 72, and a heating unit 86. FIG. 4 is a perspective view of a movable roller 30, a heating unit 86, and a rotation control unit 80. FIG. 4 is a perspective view of a movable roller 30, a heating unit 86, and a rotation control unit 80. 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. 2 is a block diagram showing an electrical configuration of the packaging device 1. FIG. It is a figure which shows the 1st operation control table 1001. FIG. It is a figure which shows the 2nd operation control table 1002. FIG. It is a figure which shows the tension adjustment table 1003. It is a flowchart of an initialization process. It is a timing chart of an initialization process. It is a flowchart of a packaging process. It is a flowchart of the packaging process following FIG. It is a timing chart of a packaging process. It is a timing chart of a packaging process following FIG. It is a flowchart of a forced discharge process. It is a timing chart of a forced discharge process. It is a state transition diagram of packaging device 1 at the time of packaging processing. It is a state transition diagram of the packaging apparatus 1 at the time of a packaging process following FIG. It is a state transition diagram of the packaging apparatus 1 at the time of packaging processing following FIG. FIG. 35 is a state transition diagram of the packaging device 1 during the packaging process, following FIG. 34. FIG. 36 is a state transition diagram of the packaging device 1 during the packaging process following FIG. 35. It is a state transition diagram of the packaging apparatus 1 at the time of a packaging process following FIG. FIG. 38 is a state transition diagram of the packaging device 1 during the packaging process following FIG. 37. It is a state transition diagram of the packaging apparatus 1 at the time of packaging processing following FIG. It is a state transition diagram of the packaging apparatus 1 at the time of packaging processing following FIG. It is a state transition diagram of the packaging apparatus 1 at the time of a packaging process following FIG.

  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 upper side of the article 3 placed on the base 2 such as a mount with a film 24 and fixing the article 3 to the base 2. Hereinafter, packaging the article 3 in this manner is referred to as “packing the base 2 and the article 3”. The packaging device 1 conveys the pedestal 2 on which the article 3 is placed from the lower right side of FIG. 1 toward the upper left side, and wraps the pedestal 2 and the article 3. The upper side, the lower side, the left diagonally lower side, and the right diagonal upper side in FIG. 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 to 3, 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 802 </ b> A covers the side plate portion 11 (see FIGS. 4 and 5, described later) from the outside in the left-right direction. The erection part 802B covers the film cassette 21 (see FIGS. 4 and 5 and described later) from above.

  Inside the housing 800, a base passage portion 805 surrounded by the lower housing 803, the two standing portions 802A, and the erection portion 802B is formed. The pedestal passing portion 805 is an internal region of the housing 800 through which the pedestal 2 attached to the transport portion 60 (see FIG. 6, described later) transported by the transport mechanism 50 (see FIG. 6, described later) can pass. .

(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 portion of the side surface on the downstream side 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 is provided below the cradle 12 and supports the cradle 12 from below. The leg 131 is provided below the cradle 13 and supports the cradle 13 from below. The cradle 12 receives the pedestal 2 conveyed toward the pedestal passage 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.

  The cradle 12 can swing around the downstream side as a fulcrum, and the cradle 13 can swing around the upstream side as a fulcrum. FIG. 3 shows a state in which the cradles 12 and 13 extend in the vertical direction. In this state, the receiving surfaces 12A and 13A are close to and perpendicular to the side plate portion 11 (see FIGS. 4 and 5) that supports the receiving bases 12 and 13. A handle 169 is provided on the back surface 12B of the cradle 12 on the side opposite to the receiving surface 12A. A handle 179 is provided on the back surface 13B of the cradle 13 opposite to the receiving surface 13A.

  As shown in FIG. 2, the user grasps each of the grips 169 and 179 and manually swings the receiving bases 12 and 13 to switch the receiving surfaces 12A and 13A to be horizontal. Thereby, the packaging device 1 is in a state in which the pedestal 2 and the article 3 can be packaged. Since the receiving surfaces 12A and 13A form the same plane, the base 2 can be smoothly conveyed. Hereinafter, the path portion of the pedestal 2 which is a plane formed by the receiving surfaces 12A and 13A and is transported is referred to as “transport path 103” (see FIG. 13). As shown in FIG. 3, the user can manually swing the cradle 12 and 13 and switch the receiving surfaces 12A and 13A to be vertical. The cradle 12, 13 closes the pedestal passing portion 805. As a result, the packaging device 1 has a small installation space and is easy to carry.

  As shown in FIGS. 4 and 5, 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 “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. A swing shaft 129 (see FIG. 6) penetrates the portion of the cradle 12 close to the side plate portion 11 in the left-right direction. Both ends in the left-right direction of the swing shaft 129 are supported by the side plate portion 11. The cradle 12 swings around the swing shaft 129. A swing shaft 139 (see FIG. 6) penetrates the portion of the cradle 13 close to the side plate portion 11 in the left-right direction. Both ends in the left-right direction of the swing shaft 139 are supported by the side plate portion 11. The cradle 13 swings around the swing shaft 139.

(2) Transport mechanism 50
As shown in FIG. 6, 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 collectively referred to as a “belt 51”. The belt 51 is endless and has teeth on the inner surface. The belt 511 is installed on a plurality of pulleys 521, 523, 524, 525, and 527 that can rotate around the left and right direction. The belt 512 is installed on a plurality of pulleys 531, 533, 534, 535 and 537 that can rotate around the left and right direction. Hereinafter, in order to facilitate the description, the case where the receiving surfaces 12A and 13A are horizontal will be described as an example.

  As shown in FIGS. 4 and 5, portions of the belt 51 disposed at the left and right ends of the cradle 12 are covered from the outside by a pair of covers 122, respectively. 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. 6, the covers 122 and 132 that cover the belt 51 are omitted.

  As shown in FIG. 6, the pulley 521 is rotatably provided on the downstream side of the right side surface of the cradle 13. The pulley 527 is rotatably provided on the upstream side of the right side surface of the cradle 12. The pulleys 521 and 527 are in contact with the inside of the belt 511 and support the belt 511 rotatably. The pulleys 523 and 525 are disposed on the downstream side and the upstream side of the left side surface of the side plate portion 111 (see FIG. 4), respectively. The pulleys 523 and 525 are in contact with the outside of the belt 511 and support the belt 511 rotatably. The pulley 524 is disposed substantially at the center in the transport direction on the left side surface of the side plate portion 111 (see FIGS. 4 and 5). The pulley 524 contacts the inside of the belt 511. The pulley 524 has teeth on the outer surface and engages with the teeth on the inner side of the belt 511.

  In addition, the shape and arrangement of the pulleys 531, 533, 534, 535, and 537 provided on the left side of the cradle 12 and 13 are the same as the respective shapes and arrangement of the pulleys 521, 523, 524, 525, and 527 described above. is there.

  The 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 pulley 524. A spur gear 58 is provided at the tip of the shaft 581. A second motor 222 is provided below the upstream portion of the cradle 13. The rotation shaft of the second motor 222 extends rightward. A spur gear 56 is provided at the tip of the rotation shaft of the second 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 spur gears 56 and 58 and the transmission unit 57 rotate the pulley 524 by transmitting the rotational driving force of the second motor 222 to the pulley 524. Since the pulleys 524 and 534 are connected by the shaft 59, the pulley 534 rotates as the pulley 524 rotates. The pulleys 524 and 534 rotate the belts 511 and 512, respectively. The belt 51 rotates in the counterclockwise direction when viewed from the right side, and thereby conveys the conveyance unit 60 provided on the outer surface to the upstream side and the downstream side. Hereinafter, the belt 51, the conveyance unit 60, the second motor 222, and the transmission unit 57 are collectively referred to as “conveyance mechanism 50”.

  The conveyance unit 60 will be described. As shown in FIG. 6, the conveyance part 60 which can attach or detach the base 2 is provided in the outer surface of each of belt 511,512. 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.

  As shown in FIGS. 7 and 8, the first transport unit 61 includes a first protruding portion 611, a first extending portion 612, and a claw portion 613. The first protruding portion 611 protrudes perpendicularly and outwardly with respect to the outer surface of the belt 51. The first extending portion 612 extends in parallel with the belt 51 from the upper end portion of the first projecting portion 611 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. A claw portion 613 is provided on 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 by sandwiching the belt 51.

  The second transport unit 62 includes a second protruding portion 621, a second extending portion 622, and a claw portion 623. The second projecting portion 621 projects in the vertical direction and the outward direction with respect to the outer surface of the belt 51. The second extending portion 622 extends in parallel with the belt 51 from the upper end portion of the second projecting portion 621 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. A claw portion 623 is provided at a portion of the second protruding portion 621 that contacts the belt 51. The claw portion 623 fixes the second transport unit 62 to the belt 51 by sandwiching the belt 51.

  The conveyance path 103 will be described. The conveyance unit 60 moves along the conveyance path 103 as the belt 51 rotates. At this time, the pedestal 2 attached to the transport unit 60 also moves along the transport path 103. Therefore, the conveyance path 103 is synonymous with not only the path portion of the base 2 but also the path portion of the conveyance unit 60. The conveyance path 103 includes first to fifth positions as the position of the conveyance unit 60.

  FIG. 7 and FIG. 32 to be described later show a state in which the transport unit 60 is in the first position. The first position is the position of the transport unit 60 where the base 2 before being wrapped by the film 24 is attached to the transport unit 60. The first position is an origin position of the transport unit 60 where the transport unit 60 protrudes upward from the receiving surface 12A of the receiving base 12 and the user can attach the base 2 to the receiving surface 12A. The transport unit 60 at the first position is disposed on the upstream side of the pedestal passage unit 805 and slightly downstream of the central part in the transport direction of the cradle 12. The position of the pedestal 2 attached to the transport unit 60 at the first position is referred to as a start position. The starting position is the position of the pedestal 2 where the pedestal 2 before being wrapped by the film 24 is disposed. The pedestal 2 at the start position is disposed on the receiving surface 12A in a state of being spaced upstream from the pedestal passing portion 805.

  FIG. 8 and FIG. 41 to be described later show a state where the transport unit 60 is in the second position. The second position is a position of the transport unit 60 where the base 2 after being wrapped by the film 24 is removed from the transport unit 60. When the conveyance part 60 exists in a 2nd position, the conveyance part 60 protrudes upwards from 13 A of receiving surfaces, and the user can remove the base 2 from 13 A of receiving surfaces. The transport unit 60 at the second position is disposed on the downstream side of the pedestal passing unit 805 and in the vicinity of the downstream end of the cradle 13. The position of the pedestal 2 attached to the transport unit 60 at the second position is referred to as an end position. The end position is the position of the pedestal 2 where the pedestal 2 after being wrapped by the film 24 is disposed. The pedestal 2 at the end position is disposed on the receiving surface 13A in a state of being spaced downstream from the pedestal passing portion 805.

  FIG. 33 and FIG. 34 to be described later show a state where the transport unit 60 is in the third position. The third position is the position of the transport unit 60 where the heating unit 86 (see FIG. 15), which will be described later, can adhere the film 24 to the first pedestal end 928 (see FIG. 18) which is the downstream end of the pedestal 2. is there. The transport unit 60 at the third position is disposed inside the pedestal passage 805 and slightly upstream from the approximate center of the pedestal passage 805 in the transport direction. The position of the pedestal 2 attached to the transport unit 60 at the third position is referred to as a front end bonding position. The front end bonding position is the position of the base 2 where the heating unit 86 can bond the film 24 to the first base end 928. When the pedestal 2 is at the front end bonding position, the downstream portion of the pedestal 2 is disposed inside the pedestal passing portion 805.

  FIGS. 37 to 40 to be described later show a state in which the transport unit 60 is in the fourth position. The fourth position is the position of the transport unit 60 where the heating unit 86 (see FIG. 15), which will be described later, can adhere the film 24 to the second pedestal end 929 (see FIG. 18), which is the upstream end of the pedestal 2. is there. The transport unit 60 at the fourth position is disposed inside the pedestal passage unit 805 and substantially in the center of the pedestal passage unit 805 in the transport direction. The position of the pedestal 2 attached to the transport unit 60 at the fourth position is referred to as a rear end bonding position. The rear end bonding position is the position of the base 2 where the heating unit 86 can bond the film 24 to the second base end 929. When the pedestal 2 is at the rear end bonding position, the central portion in the transport direction of the pedestal 2 is disposed inside the pedestal passing portion 805.

  FIGS. 35 and 36 to be described later show a state in which the transport unit 60 is in the fifth position. The fifth position is a position of the transport unit 60 that does not interfere with the lifting operation of the support unit 34 (see FIG. 13) described later. The conveyance unit 60 at the fifth position protrudes upward from the receiving surface 13 </ b> A of the cradle 13, and the conveyance unit 60 is adjacent to the downstream end of the pedestal passage unit 805. The position of the pedestal 2 attached to the transport unit 60 at the fifth position is referred to as an avoidance position. The avoidance position is a position of the pedestal 2 where the entire pedestal 2 is disposed downstream of a movement path 104 (see FIG. 13) described later. When the pedestal 2 is in the avoidance position, the upstream side portion of the pedestal 2 is disposed inside the pedestal passing portion 805.

  The positional relationship between the first to fifth positions (in other words, the positional relationship between the start position, the end position, the front end bonding position, the rear end bonding position, and the avoidance position) can be defined as follows. The downstream side in the transport direction is a direction from the first position (start position) to the second position (end position). The upstream side in the transport direction is a direction from the second position (end position) to the first position (start position). The first to third positions (front end bonding position, rear end bonding position and avoidance position) are provided between the first position (start position) and the second position (end position). The fifth position (avoidance position) is provided downstream of the fourth position (rear end adhesion position). The third position (front end bonding position) is provided upstream of the fourth position (rear end bonding position). In the present embodiment, the distance between the first position and the second position is 640.0 mm. In addition, when the base 2 attached to the transport unit 60 is transported from the start position to the front end bonding position, the base 2 can enter the base passage part 805.

(3) Film cassette 21
As shown in FIG. 9, a plate-like installation plate 117 is installed between the upper ends of the side plate units 111 and 112. A torque adjustment mechanism 40 described later is provided on the upper side of the construction plate 117 and on the right side surface of the side plate portion 112. The torque adjustment mechanism 40 is supported on the left side of the support plate 19 extending in parallel with the side plate portion 112. Of the wall plate 18 that covers the upstream side, the downstream side, and the right side of the torque adjustment mechanism 40, a concave portion 18 </ b> A that is recessed downward is provided at the upper end of the portion that covers the right side of the torque adjustment mechanism 40.

  As shown in FIG. 10, the shape of the film cassette 21 is substantially cylindrical. The film cassette 21 accommodates therein a film roll 22 (see FIG. 11) 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.

  Of the two side walls orthogonal to the axial direction of the film cassette 21, a protruding portion 25 that protrudes to the left side is provided on the side wall that is disposed on the left side when the film cassette 21 is mounted on the packaging device 1. The shape of the protrusion 25 is a prismatic shape. The protrusion 25 extends along the axis of the film cassette 21. A hole (not shown) is provided on the rear side of the peripheral wall of the protrusion 25. The film cassette 21 is mounted on the upper side of the construction plate 117 so that the protruding portion 25 fits into the recess 18A (see FIG. 9) of the wall plate 18.

  As shown in FIG. 11, flanges 27 are provided at both ends of the shaft of the film roll 22. Of the two flanges 27, the film gear 26 protruding to the left side is provided on the flange 27 arranged on the left side in a state where the film cassette 21 is mounted on the packaging device 1. The film gear 26 extends along the axis of the film roll 22. The film gear 26 is disposed inside the protruding portion 25 (see FIG. 10) of the film cassette 21. A part of the film gear 26 is exposed from a hole provided in the peripheral wall of the protruding portion 25. The film gear 26 rotates as the film 24 is unwound from the film roll 22.

(4) Torque adjustment mechanism 40
As shown in FIGS. 10 and 11, the torque adjustment mechanism 40 includes a first gear 41, a second gear 42, a third gear 43, a fourth gear 44, a first load 431, a second load 441, a lever 47, and the like. Prepare. The first gear 41 to the fourth gear 44 are spur gears. The first load 431 and the second load 441 are clutch springs.

  The lever 4 is disposed on the left side of the support plate 19. A swing shaft 476 that extends horizontally from the support plate 19 to the left and right sides is inserted into the lever 4. The plate-like fixing portion 48 is supported on the left side of the support plate 19. A through hole 481 through which the lever 47 is inserted is provided in the fixing portion 48. The lever 47 can swing inside the through hole 481 around the swing shaft 476. The lever 47 can be displaced to three different inclination angles by being positioned in any of the three round holes 482, 483, and 484 included in the through hole 481.

  The first gear 41 is disposed on the right side of the support plate 19. The first gear 41 is rotatably supported on the swing shaft 476. The first gear 41 and the lever 47 are opposed to each other with the support plate 19 interposed therebetween. The first gear 41 does not swing even when the lever 47 swings about the swing shaft 476. The second gear 42 is disposed on the right side of the support plate 19. A rotation shaft 477 extends from the lower end portion of the lever 47 in parallel with the swing shaft 476. The rotation shaft 477 supports the second gear 42 rotatably on the lower side of the swing shaft 476. The rotation shaft 477 passes through a long hole 191 provided in the support plate 19 and protrudes to the right, and is connected to the second gear 42. The second gear 42 and the lever 47 are opposed to each other with the support plate 19 interposed therebetween. The second gear 42 swings as the lever 47 swings about the swing shaft 476. The diameter of the second gear 42 is substantially the same as the diameter of the first gear 41.

  The first gear 41 and the second gear 42 mesh. Since the distance between the swing shaft 476 and the rotation shaft 477 is constant even when the lever 47 swings, the first gear 41 and the second gear 42 are always engaged. The first gear 41 is fitted to the film gear 26 exposed from the hole provided in the peripheral wall of the protruding portion 25 in a state where the film cassette 21 is mounted on the packaging device 1. The first gear 41 rotates when the film gear 26 rotates as the film 24 is unwound from the film roll 22. The second gear 42 rotates as the first gear 41 rotates.

  A third gear 43 is provided on the downstream side of the first gear 41. A fourth gear 44 is provided below the film gear 26 when the film cassette 21 is mounted on the packaging device 1. The third gear 43 and the fourth gear are respectively disposed on the right side of the support plate 19. The diameters of the third gear 43 and the fourth gear are substantially the same as the diameters of the first gear 41 and the second gear 42. The rotation shaft of the third gear 43 extends horizontally to the left through a hole provided in the support plate 19 and is connected to the first load 431. The rotation shaft of the fourth gear 44 extends horizontally to the left through a hole provided in the support plate 19 and is connected to the second load 441. The first load 431 and the second load 441 apply torque to the third gear 43 and the fourth gear 44, respectively. The strength of the torque that the second load 441 applies to the fourth gear 44 is greater than the strength of the torque that the first load 431 applies to the third gear 43.

  As shown in FIG. 10, the state where the lever 47 is positioned in the round hole 483 is referred to as a first state. When the lever 47 is in the first state, the second gear 42 does not mesh with either the third gear 43 or the fourth gear 44. Torque applied by the first load 431 to the third gear 43 and torque applied by the second load 441 to the fourth gear 44 are not transmitted to the film gear 26. Therefore, the tension acting on the film 24 fed out from the film roll 22 is the smallest. As an example, when the lever 47 is in the first state, the tension acting on the film 24 is “1.0” (unit is gravity kilogram).

  When the lever 47 swings upstream from the state of FIG. 10, the lever 47 is positioned in the round hole 482. A state where the lever 47 is positioned in the round hole 482 is referred to as a second state. When the lever 47 is in the second state, the second gear 42 meshes with the third gear 43. The fourth gear 44 does not mesh with the second gear 42. Torque applied by the first load 431 to the third gear 43 is transmitted to the first gear 41 via the second gear 42. Accordingly, when a small torque is applied to the film gear 26 via the first gear 41, the tension acting on the film 24 fed from the film roll 22 becomes larger than that in the first state. As an example, when the lever 47 is in the second state, the tension acting on the film 24 is “3.5” (unit is gravity kilogram).

  When the lever 47 swings downstream from the state of FIG. 10, the lever 47 is positioned in the round hole 484. A state in which the lever 47 is positioned in the round hole 484 is referred to as a third state. When the lever 47 is in the third state, the second gear 42 meshes with the fourth gear 44. The third gear 43 does not mesh with the second gear 42. Torque applied by the second load 441 to the fourth gear 44 is transmitted to the first gear 41 via the second gear 42. Accordingly, when a large torque is applied to the film gear 26 via the first gear 41, the tension acting on the film 24 fed out from the film roll 22 becomes larger than that in the second state. As an example, when the lever 47 is in the third state, the tension acting on the film 24 is “5.0” (unit is gravity kilogram).

(5) Movable roller 30
As shown in FIGS. 4 and 5, a box-shaped protrusion 113 extending in the vertical direction is provided on the right side surface of the side plate portion 111. A box-shaped protrusion 114 extending in the vertical direction is provided on the left side surface of the side plate portion 112. A carriage (not shown) that is driven by the rotation of the first motor 221 (see FIG. 20) 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 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 support plate portions 351 and 352 are plate-shaped. 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 a “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. 12). Hereinafter, the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 are collectively referred to as a “movable roller 30”. The first motor 221 can move the support portion 34 connected to each of the support plate portions 351 and 352 in the vertical direction via the carriage.

  As shown in FIG. 12, the movable roller 30 has a cylindrical shape. The movable roller 30 extends in the left-right direction. The length of the movable roller 30 in the left-right direction is substantially the same as the length in the left-right direction of the cradles 12 and 13 (see FIGS. 4 and 5). The support portions 341 and 342 support the movable roller 30 so as to be rotatable around the axis. 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 an intersecting 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. 13 and 14, 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. As shown in FIG. 4, the support portion 341 is fixed to the support plate portion 351 by tightening a screw in the hole of the support portion 341. The support portion 342 is fixed to the support plate portion 352 by tightening a screw in the hole of the support portion 342. As the support plate portions 351 and 352 move in the vertical direction, the support portion 34 moves in the vertical direction.

  The support portion 34 is movable between an origin position (see FIG. 13) that is the upper end portion of the movable range of the support portion 34 and a lowered position (see FIG. 14) that is the lower end portion of the movable range of the support portion 34. is there. As shown in FIG. 13, when the support portion 34 is displaced to the origin position, the portions of the support portions 341 and 342 that extend in the vertical direction are upstream of the film cassette 21 (see FIG. 4) that houses the film roll 22. It is arranged near the side. The portions of the support portions 341 and 342 that extend in the transport direction are disposed below the film cassette 21. The movable roller 30 is disposed below the film cassette 21. As shown in FIG. 14, when the support portion 34 is displaced to the lowered position, the 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 up and down by the movement of the support portion 34 is referred to as a “movement path 104”. The guide roller 31 can move between the upper guide position and the lower guide position along the movement path 104. In the present embodiment, the distance between the upper guidance position and the lower guidance position is 161.5 mm. When the support portion 34 is at the origin position, the guide roller 31 is at the upper guide position. When the guide roller 31 is displaced to the upper guide position, the guide roller 31 is disposed on the side different from the heating unit 86 with respect to the transport path 103 (in the present embodiment, on the transport path 103). When the support portion 34 is in the lowered position, the guide roller 31 is in the lower guide position. When the guide roller 31 is displaced to the lower guide position, the guide roller 31 is disposed on the same side as the heating unit 86 with respect to the transport path 103 (that is, below the transport 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”.

(6) Cutting section 77
As shown in FIG. 15, a protruding portion 115 protruding rightward is provided on the right side surface of the side plate portion 111 (see FIG. 4). A protruding portion 116 protruding leftward is provided on the left side surface of the side plate portion 112 (see FIG. 4). 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 fifth motor 225 (see FIG. 20) provided in the protrusion 115. When the fifth motor 225 is driven, the cutting portion 77 moves in the left-right direction along the guide rail 74. The left end of the movable range of the cutting part 77 is the origin position of the cutting part 77. When the cutting portion 77 is at the origin position, the blade portion 771 is disposed on the left side of the left end portion of the film 24 accommodated in the film cassette 21.

  As shown in FIG. 14, when the support portion 34 is displaced to the lowered position, the guide roller 31 is displaced to the lower guide position and 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. In this state, when the cutting part 77 moves along the guide rail 74 in the right direction from the origin position, the blade part 771 can cut the film 24 in the width direction. In the present embodiment, the distance from the origin position of the cutting portion 77 to the right end portion of the movable range is 244.5 mm.

(7) Base guide roller 71 and holding roller 72
As shown in FIG. 15, a pedestal guide roller 71 is provided on the upstream side of the portion sandwiched between the side plate portions 111 and 112 (see FIGS. 4 and 5) and below the conveyance path 103 (see FIG. 14). . 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 provided at equal intervals in the axial direction of the shaft portion 711. 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. 14, when the support portion 34 is displaced to the lowered position, the second auxiliary roller 33 is disposed near the upper portion of the base guide roller 71.

  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 “holding unit 78”. The holding part 78 can swing. The holding part 78 is swung by the sixth motor 226 (see FIG. 20).

  As shown in FIGS. 13 and 14, 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. 13) and the pedestal guide roller 71. On the other hand, the holding roller 72 moves between the origin position (see FIG. 14) spaced downward. In the present embodiment, the distance that the holding roller 72 moves between the origin position and the crimping position is 38.0 mm. As shown in FIG. 13, when the holding unit 78 is displaced to the pressure-bonding position, the holding roller 72 contacts the conveyance path 103 from the lower side. The holding roller 72 can sandwich and support the film 24 discharged from the film cassette 21 (see FIGS. 3 and 4) with the pedestal guide roller 71 in a state of being disposed close to the downstream side of the pedestal guide roller 71.

(8) Heating unit 86
As shown in FIGS. 15 and 16, a heating unit 86 is provided in the vicinity of the downstream side of the holding roller 72. 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 is a resistance heating type heater made of a metal plate. The heater 871 contacts the film 24 and heats the film 24. The holding portion 88 is a plate-like member bent in a substantially U shape in a side view, and holds the three heating units 87 inside.

  The pedestal portion 89 supports the holding portion 88 from below. Rack gears 891 extending in the vertical direction are provided at the left and right ends of the downstream side surface of the pedestal portion 89. A pinion gear is provided on the rotation shaft of the third motor 223 (see FIG. 20). The pinion gear is fitted to the rack gear 891. As the third 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.

  The heating unit 86 is between the heating position (see FIG. 15) that is the upper end of the movable range of the heating unit 86 and the origin position (see FIGS. 13 and 14) that is the lower end of the movable range of the heating unit 86. It is movable. As shown in FIG. 15, when the heating unit 86 is displaced to the heating position, the upper surfaces of the three heating units 87 are close to the conveyance path 103. As shown in FIGS. 13 and 14, when the heating unit 86 is displaced to the origin position, the upper surfaces of the three heating units 87 are separated from the conveyance path 103.

  In the present embodiment, the distance between the origin position of the heating unit 86 and the heating position is 59.2 mm. A preliminary position is provided between the origin position of the heating unit 86 and the heating position. The preliminary position is a position of the heating unit 86 slightly above the intermediate position between the origin position of the heating unit 86 and the heating position. The distance between the origin position of the heating unit 86 and the preliminary position is 43.7 mm. The distance between the preliminary position and the heating position is 15.5 mm.

(9) Rotation control unit 80
As shown in FIGS. 15 and 16, a rotation control unit 80 is provided on the downstream side of the heating unit 86. The upper side of the rotation control unit 80 is covered with an upper plate 89. The rotation control unit 80 includes a pedestal unit 85. The pedestal portion 85 is fixed above the bottom portion 10 (see FIG. 4) and at a portion sandwiched between the side plate portions 111 and 112 (see FIG. 4). 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 (not shown) 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 rotary shaft extending upward from a fourth motor 224 (see FIG. 20) 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 fourth 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.

  The stopper 81 is movable between a restriction position (see FIG. 16) that is the upstream end of the movable range of the stopper 81 and an origin position (see FIG. 17) that is the downstream end of the movable range of the stopper 81. It is. In this embodiment, when the cam 851 is at a predetermined reference angle, the stopper 81 is held at the origin position, and when the cam 851 is rotated 55 degrees from the predetermined reference angle, the stopper 81 is displaced to the restriction position.

  FIG. 16 shows a state in which the support part 34 is in the lowered position, the holding part 78 is in the crimping position, the heating part 86 is in the heating position, and the stopper 81 is in the restricting position. In this case, the heating unit 87 of the heating unit 86 protrudes upward between the first auxiliary roller 32 and the holding roller 72. The rubber 811 of the stopper 81 is disposed at a position where it can contact the guide roller 31 and is pressed against the guide roller 31 side. The rotation of the guide roller 31 is prohibited by the frictional force between the rubber 811 and the guide roller 31. That is, the restriction position of the stopper 81 is the position of the stopper 81 that restricts the rotation of the guide roller 31 in the vicinity of the guide roller 31 at the lower guide position.

  When the stopper 81 is displaced from the restricting position to the origin position in the state shown in FIG. 16, the stopper 81 is separated from the guide roller 31, so that the guide roller 31 can be rotated. That is, the origin position of the stopper 81 is a position of the stopper 81 that is separated from the guide roller 31 in the lower guide position and permits the guide roller 31 to rotate. FIG. 17 shows a state where the support part 34 is at the origin position, the holding part 78 is at the crimping position, the heating part 86 is at the origin position, and the stopper 81 is at the origin position (see FIG. 13). The upper surfaces of the three heating units 87 of the heating unit 86 at the origin position are covered with the lid portion 86A.

(10) Pedestal 2
With reference to FIG.18 and FIG.19, the base 2 with which the articles | goods 3 packaged by the packaging apparatus 1 is mounted is demonstrated. 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. FIG. 18 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.

  As shown in FIG. 18, 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 portion 911 is arranged at the position of the equipartition line close to the side 903 among the three quadrants that divide the longitudinal direction of the plate-like part 90 into substantially equal parts. The bent portion 912 is disposed at the position of the equipartition line close to the side 904 among the three quadrants.

  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 called the downstream side, the side 902 side is called the upstream side, the side 903 side is called the left side, and the side 904 side is called the right side. A portion sandwiched between the bent portions 911 and 912 in the plate-like portion 90 is referred to as a first plate-like portion 905, a portion sandwiched between the bent portion 911 and the side 903, and the bent portion 912 and the side The portions sandwiched between 904 and 904 are referred to as second plate-like portions 906 and 907, respectively.

  The first plate-like portion 905 and the second plate-like portions 906 and 907 are orthogonal to each other at the bent portions 911 and 912, respectively. Hereinafter, 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 portion extending in the left-right direction along the side 901 in the lower surface of the first plate-like portion 905 is a first pedestal end portion 928. A portion extending in the left-right direction along the side 902 in the lower surface of the first plate-like portion 905 is a second pedestal end portion 929.

  A hole 937 that penetrates the second plate-like portions 906 and 907 in the left-right direction is formed at the lower end of the second plate-like portions 906 and 907 at the center in the conveyance direction. Two holes 927 are formed in the left end portion of the first plate-like portion 905. Two holes 927 formed at the left end portion of the first plate-like portion 905 are formed on the upstream side and the downstream side across the hole 937 of the second plate-like portion 906. Although not shown, two holes 927 are also formed in the right end portion of the first plate-like portion 905. Two holes 927 formed at the right end portion of the first plate-like portion 905 are formed on the upstream side and the downstream side across the hole 937 of the second plate-like portion 907.

  As shown in FIGS. 7 and 19, the pedestal 2 is attached to the transport unit 60 arranged at the first position and placed on the cradle 12. In FIG. 7, the pedestal 2 is indicated by a virtual line. The user moves the pedestal 2 diagonally downward from the upstream side to the downstream side in the space between the first extending part 612 and the belt 51 in the first transport part 61. The side 901 of the base 2 moves obliquely downward from the upstream side toward the downstream side, and enters and 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 base 2 from above. Since the first transport unit 61 is provided on the belt 51 arranged on the left and right side surfaces of the cradle 13, the sides 901 of the base 2 are the left and right side portions, and are located between the first extending portion 612 and the belt 51. It will be in a state of being sandwiched between spaces. The second protrusion 621 fits into the hole 927. The opening edge of the downstream hole 927 enters and fits into the space sandwiched between the second extending portion 622 and the belt 51. The second extending portion 622 is in a state of covering the opening edge of the downstream hole 927 from above.

(11) Electrical configuration of packaging apparatus 1 The electrical configuration of the packaging apparatus 1 will be described with reference to FIG. The packaging device 1 includes a CPU 201 that controls the entire packaging device 1. The CPU 201 is electrically connected to the ROM 202, RAM 203, tension detection sensor 204, input unit 205, heater 411, driving units 211 to 216, and various sensors described below. The drive units 211 to 216 are electrically connected to the first motor 221 to the sixth motor 226, respectively. The driving units 211 to 216 are controllers capable of driving the first motor 221 to the sixth motor 226 connected to each of the driving units 211 to 216. The CPU 201 drives the first motor 221 to the sixth motor 226 by controlling the drive units 211 to 216.

  The ROM 202 stores various processing programs executed by the CPU 201 and various tables described later. The RAM 203 stores temporary data. The tension detection sensor 204 is provided in the vicinity of the lower end of the lever 47, and detects whether the lever 47 is in the first to third states (see FIG. 10). The CPU 201 identifies whether the current tension is “1.0”, “3.5”, or “5.0” (the unit is gravity kilogram) based on the state detected by the tension detection sensor 204. it can.

  The conveyance origin sensor 980 is provided inside the side plate portion 111 and detects a reflection plate (not shown) provided on the outer surface of the belt 51. When the conveyance unit 60 is at the origin position (that is, the first position), the conveyance origin sensor 980 detects the reflection plate of the belt 51 and is turned on.

  The area sensor 990 is a line sensor provided side by side in the vertical direction at the upstream end of the pedestal passage 805 (see FIG. 4). The area sensor 990 detects an object passing through the upstream end portion of the pedestal passage portion 805 over a vertical range from slightly above the conveyance portion 60 to the vicinity of the upper end portion of the pedestal passage portion 805. Since the area sensor 990 is provided above the conveyance unit 60, the conveyance unit 60 is not detected even if the conveyance unit 60 enters the pedestal passage unit 805. That is, the area sensor 990 detects an object (for example, the pedestal 2 or a foreign object) that is different from the conveyance unit 60 among the objects that enter the pedestal passing unit 805. When an object different from the transport unit 60 enters the pedestal passage unit 805, the area sensor 990 detects the object and turns on.

  The pedestal mounting sensor 991 is provided directly below the receiving surface 12A of the cradle 12 and slightly upstream from the first position of the transport unit 60 (see FIG. 4). The pedestal mounting sensor 991 can detect an object disposed above the pedestal mounting sensor 991. Accordingly, the pedestal mounting sensor 991 detects the pedestal 2 and is turned on when the pedestal 2 is mounted on the transport unit 60 at the first position (that is, when the pedestal 2 is at the start position).

  The pedestal center sensor 992 is provided approximately in the center of the pedestal passing portion 805 in the transport direction, and detects an object present on the movement path 104 (see FIG. 4). Since the pedestal center sensor 992 is provided above the transport unit 60, the transport unit 60 is not detected even if the transport unit 60 exists at the intersection position 105. That is, the pedestal center sensor 992 detects an object that passes through the pedestal passage 805 and is different from the transport unit 60 (that is, the pedestal 2 attached to the transport unit 60). When the pedestal 2 passes the pedestal passing portion 805, the pedestal center sensor 992 detects the pedestal 2 and is turned on. Further, the pedestal center sensor 992 detects the pedestal 2 arranged at the intersection position 105 when the pedestal 2 is attached to the transport unit 60 in the fourth position (that is, when the pedestal 2 is in the rear end bonding position). And it turns ON.

  The pedestal discharge sensor 993 is provided directly below the receiving surface 13A of the cradle 13 and slightly upstream of the second position of the transport unit 60 (see FIG. 5). The pedestal discharge sensor 993 can detect an object disposed above the pedestal discharge sensor 993. Therefore, when the pedestal 2 is attached to the transport unit 60 at the second position (that is, when the pedestal 2 is at the end position), the pedestal discharge sensor 993 detects the pedestal 2 and is turned on.

  The heating unit origin sensor 994 is provided in the vicinity of the lower end of the movable range of the heating unit 86 and detects a reflector (not shown) provided in the heating unit 86. When the heating unit 86 is at the origin position, the heating unit origin sensor 994 detects the reflection plate of the heating unit 86 and is turned on. The holding unit origin sensor 995 is provided in the vicinity of the lower end of the movable range of the holding unit 78 and detects a reflection plate (not shown) provided in the holding unit 78. When the holding part 78 is at the origin position, the holding part origin sensor 995 detects the reflection plate of the holding part 78 and is turned on. The holding part crimping sensor 996 is provided in the vicinity of the upper end of the movable range of the holding part 78 and detects the reflection plate of the holding part 78. When the holding unit 78 is in the crimping position, the holding unit crimping sensor 996 detects the reflection plate of the holding unit 78 and is turned on.

  The support part origin sensor 997 is provided in the vicinity of the upper end of the movable range of the support part 34, and detects a reflecting plate (not shown) provided on the support part 34. When the support part 34 is at the origin position, the support part origin sensor 997 detects the reflection plate of the support part 34 and is turned on. The stopper origin sensor 998 is provided in the vicinity of the downstream end of the movable range of the stopper 81 and detects a reflecting plate (not shown) provided on the stopper 81. When the stopper 81 is at the origin position, the stopper origin sensor 998 detects the reflecting plate of the stopper 81 and is turned on. The cutting part origin sensor 999 is provided in the vicinity of the left end of the movable range of the cutting part 77 and detects a reflector (not shown) provided in the cutting part 77. When the cutting unit 77 is at the origin position, the cutting unit origin sensor 999 detects the reflecting plate of the cutting unit 77 and is turned on.

  A table stored in the ROM 202 will be described. The ROM 202 stores a first operation control table 1001 (see FIG. 21), a second operation control table 1002 (see FIG. 22), and a tension adjustment table 1003 (see FIG. 23). In FIGS. 21 to 23, the speed of each operation is shown in seconds (mm / s), and the moving distance of each operation is shown in millimeters (mm). However, the speed and movement distance of the operation related to the stopper 81 are indicated by the rotation and rotation angle of the cam 851 that moves the stopper 81 (in other words, the rotation and rotation angle of the fourth motor 224).

  As shown in FIG. 21, the first operation control table 1001 defines the speed of each operation executed by the packaging device 1 in an initialization process (see FIG. 24) and a forced discharge process (see FIG. 30) described later. Has been. The CPU 201 executes each operation at a speed defined in the first operation control table 1001 when executing the initialization process and the forced discharge process. At the start of the initialization process and the forced discharge process, the CPU 201 cannot grasp the position of each member. Therefore, the CPU 201 positions a member that is moved by each operation based on the above-described various sensors (see FIG. 20) when the initialization process and the forced discharge process are executed.

  As shown in FIG. 22, the second operation control table 1002 defines the speed and moving distance of each operation executed by the packaging device 1 in the packaging process (see FIGS. 26 and 27) described later. The CPU 201 executes each operation at a speed and a moving distance defined in the second operation control table 1002 when executing the packaging process. As will be described later, since the packaging device 1 is initialized at the start of the packaging process, the CPU 201 can grasp the position of each member. Therefore, the CPU 201 positions a member that is moved by each operation based on the movement distance defined in the second operation control table 1002 when the packaging process is executed. However, the CPU 201 determines the movement distance of first to fourth transports described later based on the tension adjustment table 1003 described below.

  As shown in FIG. 23, in the tension adjustment table 1003, the moving distance of the transport unit 60 and the welding time of the film 24 are defined according to the tension of the film 24 detected based on the tension detection sensor 204. When executing the packaging process, the CPU 201 executes first to third conveyances described later at a movement distance defined in the tension adjustment table 1003, and performs a front end welding described later and a welding time defined in the tension adjustment table 1003. Perform rear end welding. In addition, each moving distance of the 2nd conveyance and the 4th conveyance changes with the conveyance direction length of the base 2. FIG. In the present embodiment, in order to facilitate understanding, the case where the base 2 having a medium size (for example, a length in the transport direction of 400 mm) is used is illustrated.

(12) Various Processes of the Packaging Apparatus 1 Various processes executed by the CPU 201 will be described with reference to FIGS. In the following description, an initialization process that initializes the state of the packaging device 1, a packaging process that covers the base 2 and the article 3 on the base 2 with a film 24, and a forced discharge process that forcibly interrupts the packaging process. Will be explained.

  The user swings the first cradle 12 and the second cradle 13 before performing the operation of wrapping the pedestal 2 and the article 3 with the film 24 using the packaging device 1 so that the receiving surfaces 12A and 13A are swung. The conveyance path 103 is formed horizontally (see FIG. 1). When the user turns on the power switch of the packaging device 1, the CPU 201 starts an initialization process based on a program stored in the ROM 202.

  The initialization process will be described with reference to the flowchart in FIG. 24 and the timing chart in FIG. The CPU 201 starts constant monitoring by the area sensor 990 (S1). When the constant monitoring is started in step S1, the area sensor 990 continues to detect an object that enters the pedestal passing portion 805 from the upstream side until the initialization process is completed. When the area sensor 990 is turned on after the execution of step S1, there is a possibility that the pedestal 2 is attached to the transport unit 60 or a foreign object (for example, the pedestal 2 or the user's hand) has entered the pedestal passing unit 805. is there. In this case, since there is a possibility that the packaging device 1 cannot be initialized properly, the CPU 201 interrupts the initialization process and executes error control. The error control is a control for forcibly stopping various operations related to the packaging device 1 (for example, a movement operation of the conveyance unit 60 by the conveyance mechanism 50, a welding operation of the film 24 by the heating unit 86, an elevating operation of the support unit 34, etc.).

  The CPU 201 starts constant monitoring by the pedestal center sensor 992 (S3). When continuous monitoring is started in step S3, the pedestal center sensor 992 continues to detect the pedestal 2 that passes through the pedestal passing portion 805 until the initialization process is completed. If the pedestal center sensor 992 is turned on after step S3, the pedestal 2 may be attached to the transport unit 60. In this case, the CPU 201 interrupts the initialization process and executes error control as described above.

  The CPU 201 executes nip pressure bonding (S5). The nip pressure bonding is a control for bringing the holding roller 72 close to the pedestal guide roller 71. In step S5, the holding portion 78 is swung at a speed of 71 mm per second toward the upper end portion of the movable range (see FIG. 21). When the holding part pressure sensor 996 is turned on, the swinging of the holding part 78 is stopped. Thereby, the holding part 78 is displaced to the crimping position.

  The CPU 201 raises the heating unit 86 by a predetermined amount and then lowers it (S7). In step S7, the heating unit 86 is raised from the current position by a predetermined amount (for example, 50 mm) at a speed of 48 mm per second. Subsequently, the heating unit 86 is lowered at a speed of 48 mm / s (see FIG. 21). When the heating unit origin sensor 994 is turned on, the lowering of the heating unit 86 is stopped. Thereby, the heating part 86 is displaced to the origin position. In addition, when the heating part 86 exists in an origin position at the time of the start of step S7, the heating part 86 will return to an origin position after carrying out predetermined amount raise at the time of execution of step S7.

  The CPU 201 executes nip release (S9). The nip release is a control for separating the holding roller 72 from the pedestal guide roller 71. In step S9, the holding portion 78 is swung at a speed of 71 mm per second toward the lower end portion of the movable range (see FIG. 21). When the holding unit origin sensor 995 is turned on, the swinging of the holding unit 78 is stopped. Thereby, the holding part 78 is displaced to the origin position.

  The CPU 201 releases the stopper 81 (S11). The release of the stopper 81 is a control that permits the rotation of the guide roller 31 by the stopper 81. In step S11, the stopper 81 is moved downstream by rotating the cam 851 at a rotation speed of 1.25 rotations per second (see FIG. 21). When the stopper origin sensor 998 is turned on, the movement of the stopper 81 is stopped. As a result, the stopper 81 is displaced to the origin position.

  Next, the CPU 201 lowers the movable roller 30 by a predetermined amount and then raises it (S13). In step S13, the support portion 34 that supports the movable roller 30 is lowered from the current position by a predetermined amount (for example, 50 mm) at a speed of 30 mm per second. Subsequently, the support portion 34 is raised at a speed of 30 mm per second (see FIG. 21). When the support part origin sensor 997 is turned ON, the ascent of the support part 34 is stopped. Thereby, the support part 34 is displaced to the origin position, and the guide roller 31 is displaced to the upper guide position. In addition, when the support part 34 exists in an origin position at the time of the start of step S13, at the time of execution of step S13, the support part 34 returns to the origin position after a predetermined amount is lowered.

  Next, the CPU 201 operates the cutting unit 77 and then returns it to the initial position (S15). In step S15, the cutting unit 77 is moved rightward at a speed of 160 mm per second up to the right end of the movable range of the cutting unit 77. Subsequently, the cutting unit 77 is moved leftward at a speed of 160 mm / sec (see FIG. 21). When the cutting part origin sensor 999 is turned on, the movement of the cutting part 77 is stopped. Thereby, the cutting part 77 is displaced to the origin position.

  Finally, the CPU 201 moves the transport unit 60 by a predetermined amount and then returns it to the origin position (that is, the first position) (S17). In step S17, the transport unit 60 is transported downstream from the current position by a predetermined amount (for example, 50 mm) at a speed of 220 mm per second. Subsequently, the transport unit 60 is moved upstream at a speed of 220 mm / s (see FIG. 21). When the conveyance origin sensor 980 is turned on, the movement of the conveyance unit 60 is stopped. Thereby, the transport unit 60 is displaced to the first position.

  The packaging apparatus 1 is initialized by the above initialization process. Thereafter, the user manually pulls out the film 24 discharged from 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. 32).

  The user performs an input operation (preparation completion instruction) for notifying the packaging apparatus 1 that the film 24 is ready via the input unit 205. When a preparation completion instruction is input, the CPU 201 executes nip pressure bonding as in step S5. As a result, as shown in FIG. 32, the leading end of the film 24 drawn from the film cassette 21 is sandwiched by the pedestal guide roller 71 and the holding roller 72 from both sides in the transport direction. The film 24 and the transport path 103 intersect in the vicinity of the front end of the film 24.

  The user sets the tension of the film 24 by displacing the lever 47 (see FIG. 10) to one of the first to third states according to the type of the article 3 to be packaged. For example, when a strong force cannot be applied to the article 3, the user displaces the lever 47 to the first state, thereby minimizing the tension acting on the film 24. The tension according to the state of the lever 47 acts on the film 24 by the torque applied to the film roll 22 by the torque adjusting mechanism 40. The film 24 extends straight in the vertical direction between the upstream side of the second auxiliary roller 33 and the portion sandwiched between the pedestal guide roller 71 and the holding roller 72.

  The user attaches the pedestal 2 to the transport unit 60 disposed at the first position, and places the pedestal 2 on the cradle 12. At this time, the side 901 of the base 2 is arranged on the downstream side, and the side 902 is arranged on the upstream side. The user places the article 3 on the first plate-like portion 905 of the pedestal 2 placed on the cradle 12. On the other hand, the CPU 201 starts the packaging process based on the program stored in the ROM 202.

  The packaging process will be described with reference to the flowcharts of FIGS. 26 and 27 and the timing charts of FIGS. 28 and 29. In the following description, the state transition diagrams shown in FIGS. 32 to 41 are views of the packaging device 1 as viewed from the left and right in the center in the left-right direction, and only the configuration necessary for explanation of each operation state is illustrated.

  The CPU 201 determines whether or not the pedestal mounting sensor 991 is ON (S21). When the user attaches the pedestal 2 to the transport unit 60 as described above, the pedestal attachment sensor 991 detects the pedestal 2 at the start position and turns on. When the pedestal mounting sensor 991 is ON (S21: YES), the CPU 201 lights a start button (not shown) (S23). When the pedestal attachment sensor 991 is OFF (S21: NO), the CPU 201 repeatedly executes step S21 to wait for the pedestal 2 to be attached to the transport unit 60.

  After executing step S23, the CPU 201 determines whether or not the start button is ON (S25). When the user presses the start button, the start button is turned on. When the start button is OFF (S25: NO), the CPU 201 repeatedly executes step S25 to wait for the start button to be pressed. If the start button is ON (S25: YES), a start command is input to the CPU 201. The CPU 201, to which the start command is input, executes the first conveyance and the heating unit preliminary ascending in parallel (S27). In the present embodiment, the first conveyance and the heating unit preliminary ascent are started at the same time. However, if at least a part of the execution period of each operation overlaps, any of the first conveyance and the heating unit preliminary ascending first. May be executed.

  In the first conveyance, the pedestal 2 is moved from the start position to the front end adhesion position in a state where the guide roller 31 is in the upper guide position and the film 24 guided from the guide roller 31 to the heating unit 86 intersects the transport path 103. It is control which conveys downstream. In step S27, the transport unit 60 is moved downstream from the first position at a speed of 220 mm / s (see FIG. 22). Based on the number of rotations of the second motor 222, the movement of the conveyance unit 60 is stopped when the conveyance unit 60 is moved by a movement distance determined in the tension adjustment table 1003 (see FIG. 23). In the present embodiment, the moving distance of the first conveyance is 179.0 mm regardless of the tension of the film 24. Thus, the first conveyance is completed, the conveyance unit 60 moves to the third position, and the base 2 is displaced from the start position to the front end adhesion position.

  At the time of execution of the first conveyance, the state of the packaging device 1 changes as follows. As shown in FIG. 33, the downstream end (side 901) of the pedestal 2 gradually approaches the film 24 extending across the conveyance path 103. The pedestal 2 that moves downstream enters the pedestal passage 805. The side 901 of the base 2 is in contact with the film 24 and then passes over the holding roller 72. The side 901 of the base 2 approaches the intersection position 105 while pushing the film 24 to the downstream side. The pedestal 2 moves further downstream, and the side 901 of the pedestal 2 passes above the heating unit 86. At this time, the leading end of the film 24 held by the pedestal guide roller 71 and the holding roller 72 wraps around the lower surface of the first plate-like portion 905 of the pedestal 2.

  The heating unit preliminary ascent is control for raising the heating unit 86 from the initial position to the preliminary position. In step S27, the heating part 86 is raised from the origin position at a speed of 400 mm / s. When the heating unit 86 is moved by 43.7 mm based on the number of rotations of the third motor 223, the raising of the heating unit 86 is stopped (see FIG. 22). As a result, as shown in FIG. 33, the heating unit 86 is displaced from the origin position to the preliminary position, and the distance to the transport path 103 is reduced. Since the execution time of the heating unit preliminary rise is shorter than the execution time of the first conveyance, the heating unit preliminary increase is completed before the first conveyance is completed.

  After execution of step S27, the CPU 201 determines whether or not the area sensor 990 is ON (S29). As shown in FIG. 33, when the base 2 is transported to the front end adhesion position by the first transport, the area sensor 990 detects the base 2 and is turned on (S29: YES). In this case, since the pedestal 2 has been transferred into the pedestal passage 805, the CPU 201 further raises the heating unit 86 (S31). In step S31, the heating part 86 is raised from the preliminary position at a speed of 400 mm / s. When the heating unit 86 is moved 15.5 mm based on the number of rotations of the third motor 223, the ascending of the heating unit 86 is stopped (see FIG. 22). Thereby, as shown in FIG. 34, the heating part 86 is displaced from the preliminary position to the heating position. The upper surface of the heating unit 87 (see FIG. 16) of the heating unit 86 is in a state where the film 24 is sandwiched between the upper surface of the pedestal 2 and the first pedestal end 928 (see FIG. 18).

  CPU201 heats heater 871 of heating part 86, and performs front end welding (S33). The front end welding is control for adhering the front end of the film 24 heated and melted by the heater 871 to the first pedestal end portion 928. After starting the heating of the heater 871, the CPU 201 stops the heating of the heater 871 after the welding time determined in the tension adjustment table 1003 (see FIG. 23) has elapsed (S35). The welding time is a time required for heating the temperature of the film 24 to the melting point by the heater 871. In this embodiment, the welding time for the front end welding is 1.5 seconds regardless of the tension of the film 24.

  The CPU 201 lowers the heating unit 86 (S37). In step S37, the heating unit 86 is lowered from the heating position at a speed of 400 mm / s. When the heating unit 86 is moved 59.2 mm based on the rotation speed of the third motor 223, the lowering of the heating unit 86 is stopped (see FIG. 22). Thereby, as shown in FIG. 35, the heating unit 86 is displaced from the heating position to the origin position.

  The CPU 201 executes nip release and second transport in parallel (S39). In this embodiment, the nip release and the second transport are started simultaneously, but the nip release may be executed before the second transport as long as at least a part of the execution period of each operation overlaps each other. . In step S39, the holding part 78 is swung downward from the crimping position at a speed of 201 mm / s. Based on the number of rotations of the sixth motor 226, when the holding portion 78 is moved 38.0 mm, the swinging of the holding portion 78 is stopped (see FIG. 22). Thereby, as shown in FIG. 35, the holding part 78 is displaced from the crimping position to the origin position. The pedestal guide roller 71 and the holding roller 72 release the front end of the sandwiched film 24.

  The second transport is control for transporting the pedestal 2 downstream from the front end adhesion position to the avoidance position. In step S39, the transport unit 60 is transported downstream from the third position at a speed of 440 mm per second (see FIG. 22). At the time of performing the second conveyance, the state of the packaging device 1 changes as follows. As shown in FIG. 35, the pedestal 2 is conveyed through the pedestal passage 805 from the front end bonding position. At this time, the pedestal 2 moves to the downstream side with the leading end of the film 24 bonded to the first pedestal end 928. The side 901 of the pedestal 2 moves downstream via the intersection position 105.

  Tension is acting on the film 24 by the torque applied from the torque adjusting mechanism 40 to the film roll 22. Accordingly, the film 24 is pressed against the side 901 of the pedestal 2 and the downstream end of the article 3 and bends at the contact portion between the side 901 and the article 3. As the pedestal 2 moves, the film 24 is fed out from the film roll 22 little by little. The film 24 is in close contact with the pedestal 2 and the article 3 at a position covering the first plate-like portion 905 and the downstream side of the article 3.

  As the pedestal 2 continues to be conveyed downstream, the upstream end (side 902) of the pedestal 2 passes over the pedestal guide roller 71. The side 902 of the pedestal 2 moves downstream through the intersection position 105. The film 24 extending from the film roll 22 extends downstream via the second auxiliary roller 33 and the first auxiliary roller 32, and reaches the side 901 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.

  The CPU 201 determines whether or not the pedestal center sensor 992 is ON (S41). When the pedestal 2 is attached to the transport unit 60, the pedestal center sensor 992 detects the pedestal 2 and is turned on in the process in which the pedestal 2 is transported from the front end adhesion position to the avoidance position (S41: YES). On the other hand, when the pedestal center sensor 992 does not detect the pedestal 2 (S41: NO), the CPU 201 determines whether or not a predetermined time has elapsed since the start of step S39 (S43). If the predetermined time has not elapsed since the start of step S39 (S43: NO), the CPU 201 repeatedly executes steps S41 and 43, thereby waiting for the pedestal center sensor 992 to detect the pedestal 2 within the predetermined time. .

  If a certain time has elapsed since the start of step S39 (S43: YES), the pedestal 2 is not attached to the transport unit 60, or the pedestal 2 has not been transported properly inside the pedestal passage unit 805, so the CPU 201 Performs error control (S45). If the area sensor 990 has not detected the pedestal 2 in step S29 (S29: YES), since the pedestal 2 has not been properly carried into the pedestal passage 805, the CPU 201 executes error control (S45). . After the execution of step S45, the packaging process is terminated.

  When the pedestal center sensor 992 is ON (S41: YES), since the pedestal 2 has not reached the avoidance position, the CPU 201 continues the second conveyance (S47). Further, the CPU 201 determines whether or not the pedestal center sensor 992 is ON (S49). When the pedestal center sensor 992 is ON (S49: YES), the CPU 201 repeats steps S47 and S49 until the pedestal 2 is not detected by the pedestal center sensor 992. On the other hand, when the entire pedestal 2 moves downstream from the intersection position 105, the pedestal center sensor 992 is turned off (S49: NO). In this case, as in step S1, the CPU 201 starts constant monitoring by the area sensor 990 (S51).

  When continuous monitoring is started in step S51, the area sensor 990 continues to detect an object that enters the pedestal passing portion 805 from the upstream side until the packaging process is completed. If the area sensor 990 is turned on after the execution of step S51, there is a possibility that a foreign object (for example, a user's hand) has entered the pedestal passage 805. In this case, the CPU 201 interrupts the packaging process and executes error control.

  The CPU 201 transports the transport unit 60 downstream by a predetermined amount according to the tension of the film 24 (S53). In step S53, the conveyance unit 60 is conveyed downstream at a speed of 440 mm per second continuously after the pedestal center sensor 992 is turned off. When the pedestal center sensor 992 is turned off (S49: NO), the movement of the transport unit 60 is stopped when the pedestal center sensor 992 is moved by the movement distance determined in the tension adjustment table 1003 (see FIG. 23). Thus, the second conveyance is completed, the conveyance unit 60 moves to the fifth position, and the base 2 is displaced from the front end adhesion position to the avoidance position.

  The strength with which the base 2 and the article 3 are pressed against the film 24 by the second conveyance increases as the tension of the film 24 increases. Therefore, the greater the tension of the film 24, the smaller the movement distance of the base 2 when the second motor 222 is rotated by a predetermined amount than the planned movement distance. In the present embodiment, the greater the tension of the film 24 set by the user, the greater the moving distance of the second conveyance (see FIG. 23). Specifically, when the tension of the film 24 is 2.0 kgf or 3.5 kgf, the moving distance of the second conveyance is 15.0 mm, whereas when the tension of the film 24 is 5.0 kgf, The moving distance of the two conveyances is 16.0 mm. Thereby, irrespective of the tension | tensile_strength of the film 24, the moving distance of the base 2 at the time of 2nd conveyance becomes fixed.

  The CPU 201 lowers the movable roller 30 (S55). In step S55, the support portion 34 that supports the movable roller 30 is lowered from the upper guide position at a speed of 240 mm / sec. When the support portion 34 is moved 161.5 mm based on the number of rotations of the first motor 221, the lowering of the support portion 34 is stopped (see FIG. 22). Thereby, as shown in FIG. 36, the support part 34 is displaced from the origin position to the lowered position. At this time, the guide roller 31 descends along the movement path 104 and is displaced from the upper guide position to the lower guide position.

  The guide roller 31 is in contact with the conveyance path 103 from below. The film 24 is disposed at a position covering the upstream side of the base 2 and the article 3. The film 24 extends from the side 902 of the base 2 toward the guide roller 31, extends through the guide roller 31 toward the first auxiliary roller 32, and further passes through the first auxiliary roller 32 and the second auxiliary roller 33. The roll 22 is reached. A portion of the film 24 extending between the guide roller 31 and the first auxiliary roller 32 extends in a substantially horizontal direction and is disposed below the upper end of the blade portion 771. At this time, since the cutting part 77 has moved to the origin position, the film 24 and the blade part 771 are not in contact with each other.

  CPU201 performs the 3rd conveyance (S57). The third conveyance is a control for conveying the pedestal 2 upstream from the avoidance position to the rear end adhesion position in a state where the film 24 extending from the guide roller 31 toward the article 3 intersects the conveyance path 103. In step S57, the transport unit 60 is moved upstream from the fifth position at a speed of 440 mm / sec (see FIG. 22). Based on the number of rotations of the second motor 222, the movement of the conveyance unit 60 is stopped when the conveyance unit 60 is moved by a movement distance determined in the tension adjustment table 1003 (see FIG. 23). Thus, the third conveyance is completed, the conveyance unit 60 moves to the fourth position, and the base 2 is displaced from the avoidance position to the rear end adhesion position.

  At the time of execution of the third conveyance, the state of the packaging device 1 changes as follows. As shown in FIG. 37, the side 902 of the base 2 passes above the heating unit 86 via the intersection position 105. At this time, the guide roller 31 relatively moves from the side 902 toward the downstream side 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 first plate-shaped portion 905 and the guide roller 31. The film 24 extends from the side 902 toward the guide roller 31 along the lower surface of the first plate-shaped portion 905, extends toward the first auxiliary roller 32 via the guide roller 31, and further, the first auxiliary roller 32 and the second The film roll 22 is reached via the two auxiliary rollers 33. The first auxiliary roller 32 and the second auxiliary roller 33 support the film 24 extending from the guide roller 31 to the film roll 22 so as not to contact the base 2.

  That is, the film 24 is drawn from the downstream end of the base 2 to the upstream end so as to cover the article 3 from above. In this state, the pedestal 2 is transported upstream against the tension of the film 24 when the third transport is performed. The greater the tension of the film 24, the greater the repulsive force of the film 24 against which the base 2 and the article 3 are pressed by the third conveyance. Therefore, the greater the tension of the film 24, the smaller the movement distance of the base 2 when the second motor 222 is rotated by a predetermined amount than the planned movement distance.

  In the present embodiment, the greater the tension of the film 24 set by the user, the greater the travel distance of the third conveyance (see FIG. 23). Specifically, when the tension of the film 24 is 2.0 kgf, the moving distance of the third conveyance is 67.5 mm. When the tension of the film 24 is 3.5 kgf, the moving distance of the third conveyance is 74.0 mm. When the tension of the film 24 is 5.0 kgf, the moving distance of the third conveyance is 79.0 mm. Thereby, irrespective of the tension | tensile_strength of the film 24, the moving distance of the base 2 at the time of 3rd conveyance becomes fixed.

  The CPU 201 executes the operation of the stopper 81 and the operation of the cutting unit 77 in parallel (S59). In step S59, the movement of the cutting portion 77 is started before the stopper 81 is displaced from the origin position to the restriction position, and the film 24 is separated by the cutting portion 77 after the stopper 81 is displaced to the restriction position. The stopper 81 and the cutting part 77 are controlled as follows.

  The operation of the stopper 81 is control for restricting the rotation of the guide roller 31 by the stopper 81. In step S59, the stopper 81 is moved from the origin position to the upstream side by rotating the cam 851 at a rotation speed of 3.75 times per second. When the cam 851 is rotated 55 degrees based on the rotation speed of the fourth motor 224, the movement of the stopper 81 is stopped (see FIG. 22). Thereby, as shown in FIG. 38, the stopper 81 is displaced from the origin position to the restriction position. The rotation of the guide roller 31 is prohibited, and the film 24 is sandwiched between the guide roller 31 and the rubber 811 of the stopper 81.

  In step S59, the cutting part 77 is moved rightward from the origin position at a speed of 400 mm / s. Based on the number of rotations of the fifth motor 225, when the cutting unit 77 is moved 244.5 mm, the movement of the cutting unit 77 is stopped (see FIG. 22). Thereby, the cutting part 77 moves from the origin position to the right end part of the movable range. The film 24 held by the guide roller 31 and the stopper 81 is cut by the blade portion 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 of the base 2 and the article 3 from the part wound around the film roll 22. As shown in FIG. 38, after the film 24 is cut, the cut end of the film 24 extending from the film roll 22 hangs down to the lower side of the pedestal guide roller 71.

  The CPU 201 executes the nip pressure bonding and the raising of the heating unit 86 in parallel (S61). In this embodiment, the nip crimping and the heating unit 86 are started simultaneously, but if at least part of the execution period of each operation overlaps with each other, the nip crimping is performed before the heating unit 86 rises. May be. In step S61, the holding portion 78 is swung at a speed of 201 mm / second from the origin position toward the upper end of the movable range. Based on the number of rotations of the sixth motor 226, when the holding portion 78 is moved 38.0 mm, the swinging of the holding portion 78 is stopped (see FIG. 22). Thereby, as shown in FIG. 39, the holding portion 78 is displaced from the origin position to the crimping position. 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.

  In step S61, the heating unit 86 is raised from the initial position at a speed of 400 mm / s. When the heating unit 86 is moved 59.2 mm based on the number of rotations of the third motor 223, the ascent of the heating unit 86 is stopped (see FIG. 22). Thereby, as shown in FIG. 39, the heating part 86 is displaced from the initial position to the heating position. The upper surface of the heating unit 87 (see FIG. 36) of the heating unit 86 is in a state of sandwiching the film 24 with the second pedestal end 929 (see FIG. 18) of the pedestal 2.

  CPU201 heats heater 871 of heating part 86, and performs back end welding (S63). The rear end welding is control for adhering the front end of the film 24 heated and melted by the heater 871 to the second pedestal end portion 929. After starting the heating of the heater 871, the CPU 201 stops the heating of the heater 871 after the welding time set in the tension adjustment table 1003 (see FIG. 23) has elapsed (S65). Thereby, as shown in FIG. 39, the film 24 cut from the film roll 22 is in a state of covering the base 2 and the article 3.

  In this embodiment, the larger the tension of the film 24 set by the user, the shorter the welding time for the rear end welding (see FIG. 23). Specifically, when the tension of the film 24 is 2.0 kgf, the welding time of the rear end welding is 1.2 seconds, whereas when the tension of the film 24 is 3.5 kgf or 5.0 kgf, The welding time for rear end welding is 1.0 second. When the tension of the film 24 is large, the film 24 that wraps the pedestal 2 and the article 3 is in strong contact with the second pedestal end portion 929, so that it can be sufficiently welded in a relatively short welding time. Therefore, the film 24 can be welded to the pedestal 2 with a constant strength by changing the welding time according to the tension of the film 24. When the tension of the film 24 is large, the film 24 can be welded to the base 2 in a short time.

  The CPU 201 executes the lowering of the heating unit 86 and the release of the stopper 81 in parallel (S67). In this embodiment, the lowering of the heating unit 86 and the release of the stopper 81 are started simultaneously. However, if at least a part of the execution period of each operation overlaps with each other, the lowering of the heating unit 86 and the release of the stopper 81 are performed. Either may be executed first.

  In step S67, the heating unit 86 is lowered from the heating position at a speed of 400 mm / s. When the heating unit 86 is moved 59.2 mm based on the rotation speed of the third motor 223, the lowering of the heating unit 86 is stopped (see FIG. 22). Thereby, as shown in FIG. 40, the heating unit 86 is displaced from the heating position to the origin position. On the other hand, by rotating the cam 851 at a rotation speed of 3.75 times per second, the stopper 81 is moved downstream from the restriction position. When the cam 851 is rotated 305 degrees based on the rotation speed of the fourth motor 224, the movement of the stopper 81 is stopped. Thereby, as shown in FIG. 40, the stopper 81 is displaced from the restriction position to the origin position, and the rotation of the guide roller 31 is permitted.

  CPU201 performs the 4th conveyance (S69). The fourth conveyance is control for conveying the pedestal 2 downstream from the rear end adhesion position to the end position. In step S69, the transport unit 60 is transported downstream from the fourth position at a speed of 440 mm per second (see FIG. 22). The CPU 201 determines whether or not the pedestal discharge sensor 993 is ON (S71). When the pedestal 2 whose packaging has been completed is conveyed to the end position, the pedestal discharge sensor 993 detects the pedestal 2 at the end position and is turned on (S71: YES). In this case, the CPU 201 stops the fourth conveyance (S73). Thereby, as shown in FIG. 41, the conveyance part 60 moves to the second position, and the base 2 is displaced from the rear end adhesion position to the end position. The pedestal 2 and the article 3 for which packaging has been completed are transported downstream from the pedestal passage portion 805 and arranged on the receiving surface 13A.

  When the pedestal discharge sensor 993 is OFF (S71: NO), the CPU 201 continues the fourth conveyance (S75), and determines whether or not a certain time has elapsed since the start of step S69 (S77). If the predetermined time has not elapsed (S77: NO), the process returns to step S71 and waits for the base discharge sensor 993 to detect the base 2 within the predetermined time. If the predetermined time has elapsed (S77: YES), the CPU 201 executes error control (S45) and ends the packaging process.

  After execution of step S73, the CPU 201 determines whether or not the pedestal ejection sensor 993 is OFF (S79). When the user removes the pedestal 2 and the article 3 from which the packaging has been completed, the pedestal discharge sensor 993 is turned off (S79: YES). If the pedestal discharge sensor 993 is ON (S79: NO), the process returns to step S79 and waits for the pedestal discharge sensor 993 to be turned OFF.

  When the pedestal discharge sensor 993 is OFF (S79: YES), the CPU 201 executes the return of the transport unit 60, the raising of the movable roller 30, and the return of the cutting unit 77 in parallel (S81). In the present embodiment, the return of the transport unit 60, the raising of the movable roller 30, and the return of the cutting unit 77 are started at the same time, but at least a part of the execution period of each operation overlaps each other, and each operation is mutually performed. As long as there is no interference, the return of the conveyance unit 60, the raising of the movable roller 30, and the return of the cutting unit 77 may be started in any order.

  In step S81, the transport unit 60 is moved upstream from the second position at a speed of 220 mm / s. When the transport unit 60 is moved 640 mm based on the number of rotations of the second motor 222, the movement of the transport unit 60 is stopped (see FIG. 22). The support portion 34 that supports the movable roller 30 is raised from the lowered position at a speed of 80 mm / second. If the support part 34 is moved 161.5 mm based on the rotation speed of the 1st motor 221, the raise of the support part 34 will be stopped (refer FIG. 22). The cutting part 77 is moved leftward from the right end part of the movable range at a speed of 400 mm / s. Based on the number of rotations of the fifth motor 225, when the cutting unit 77 is moved 244.5 mm, the movement of the cutting unit 77 is stopped (see FIG. 22).

  Thereby, the conveyance unit 60 moves to the first position, and the base 2 is displaced from the end position to the start position. The support portion 34 is displaced from the lowered position to the origin position, and the guide roller 31 is displaced from the lower guide position to the upper guide position. The cutting part 77 moves from the origin position from the right end part of the movable range. That is, the packaging device 1 returns to the initialized state. After executing step S81, the CPU 201 ends the packaging process. Thereafter, the user attaches a new pedestal 2 to the transport unit 60 and places a new article 3 on the pedestal 2. The user can execute the packaging of the new pedestal 2 and the article 3 again by pressing a start button (not shown).

  The packaging apparatus 1 that is performing the packaging process may have an error state that cannot properly perform the packaging process. For example, as an error state, the film 24 may be entangled inside the pedestal passage 805, or the pedestal 2 or the conveyance 3 may be clogged inside the pedestal passage 805. In such a case, when the user presses a forced discharge button (not shown), a forced discharge command is input to the CPU 201. The CPU 201 to which the forced ejection command is input starts the forced ejection process based on the program stored in the ROM 202.

  The forced discharge process will be described with reference to the flowchart of FIG. 30 and the timing chart of FIG. CPU201 starts the movement of the conveyance part 60 (S101). In step S101, the transport unit 60 is moved downstream from the current position at a speed of 44 mm / s (see FIG. 21). When the base discharge sensor 993 is turned on, the movement of the transport unit 60 is stopped. Thereby, the transport unit 60 is displaced to the second position. When the base 2 is attached to the transport unit 60, the base 2 is displaced to the end position.

  When the movement of the transport unit 60 is started in step S101, the CPU 201 executes processing similar to that in steps S5 to S15 (S103 to S113). Thereby, the holding | maintenance part 78, the heating part 86, the stopper 81, the support part 34, and the cutting | disconnection part 77 are displaced to each origin position. The guide roller 31 is displaced to the upper guide position. Finally, the CPU 201 returns the transport unit 60 to the origin position (that is, the first position) (S115). In step S115, the transport unit 60 is moved upstream from the second position at a speed of 44 mm / s (see FIG. 21). When the conveyance origin sensor 980 is turned on, the movement of the conveyance unit 60 is stopped. Thereby, the transport unit 60 is displaced to the first position. When the base 2 is attached to the transport unit 60, the base 2 is displaced to the start position. The user can collect the base 2 and the article 3 from the packaging device 1 in an error state.

(13) Technical features of the packaging device 1 The main technical features of the packaging device 1 according to the above embodiment are exemplified below. In the packaging apparatus 1, the transport unit 60 is moved from the first position to the third position with the film 24 guided from the guide roller 31 in the upper guide position to the heating unit 86 crossing the transport path 103, and the base 2 Is conveyed from the start position to the front end bonding position (S27). The film 24 is bonded to the first pedestal end 928 by the heating unit 86 (S33). The transport unit 60 is moved from the third position to the fifth position, and the base 2 is transported from the front end adhesion position to the avoidance position (S39). The guide roller 31 is moved from the upper guide position to the lower guide position (S55), and the article 3 placed on the base 2 is covered with the film 24. With the film 24 extending from the guide roller 31 toward the article 3 crossing the conveyance path 103, the conveyance unit 60 is moved from the fifth position to the fourth position, and the pedestal 2 is conveyed from the avoidance position to the rear end adhesion position. (S57). The film 24 is bonded to the second pedestal end 929 by the heating unit 86 (S63). The transport unit 60 is moved from the fourth position to the second position, and the base 2 is transported from the rear end bonding position to the end position (S69).

  According to this, the pedestal 2 and the article 3 are packaged by the film 24 by moving the guide roller 31 along the movement path 104 in the process of moving the pedestal 2 along the conveyance path 103. Since the guide roller 31 does not move over the entire periphery of the base 2 and the article 3, the movement path 104 of the guide roller 31 becomes small, and the packaging device 1 is downsized. For this reason, even if the packaging device 1 is small, it is possible to wrap the article 3 on the base 2 by covering the periphery of the large article 3 with the film 24.

  In the packaging process shown in FIGS. 26 to 29, the first transport (S27) has a moving speed of the transport unit 60 higher than that of the second transport (S39), the third transport (S57), and the fourth transport (S69). Slow (see FIG. 22). That is, in the process of wrapping the pedestal 2 and the article 3 with the film 24, the speed at which the pedestal 2 attached to the transport unit 60 is first transported is the highest among the speeds at which the pedestal 2 is transported. slow. Therefore, before the film 24 is bonded, the possibility that the pedestal 2 may be displaced can be suppressed, and the pedestal 2 can be safely transported to the position where the film 24 is bonded.

  In the initialization process shown in FIGS. 24 and 25 and the forced discharge process shown in FIGS. 30 and 31, the operation speed of each process (specifically, the transport unit 60, The moving speed of the holding part 78, the heating part 86, the stopper 81, the movable roller 30, and the cutting part 77) is slow (see FIG. 21). Therefore, in the initialization process, the packaging device 1 can be safely initialized. In the forced discharge process, the user can safely recover the pedestal 2 and the article 3 from the packaging device 1 in an error state.

  The moving speed of the transport unit 60 in the initialization process and the forced discharge process is slower than the moving speed of the transport unit 60 in the packaging process (see FIGS. 21 and 22). The moving speed of the transport unit 60 in the forced discharge process is slower than the moving speed of the transport unit 60 in the initialization process (see FIG. 21). Since the packaging device 1 in an error state may cause a problem in safety, the user can be injured when collecting the pedestal 2 and the article 3 by slowing down the conveyance speed of the pedestal 2 during the forced discharge process. Can be prevented.

  In the initialization process and the packaging process, error control is executed in accordance with the detection results of a plurality of sensors (for example, area sensor 990, pedestal center sensor 992, pedestal discharge sensor 993) (S1, S3, S29, S41). S45, S51, S71, S75, S77). Thereby, when the abnormality occurs in the packaging device 1, the packaging operation can be stopped urgently, so that the safety of the packaging operation can be improved.

  In the packaging process, a plurality of operations are performed in duplicate (S27, S39, S59, S61, S67, S81). Thereby, compared with the case where each operation | movement is performed to a sequence, the execution time of the packaging operation | movement which packages the base 2 and the articles | goods 3 with the film 24 can be shortened. For example, at the same time when the pedestal 2 is transported, the heating unit 86 is moved from the origin position to the preliminary position (S27). The heating unit 86 is moved from the preliminary position to the heating position, and the film 24 is bonded to the first pedestal end 928 by the heating unit 86 (S31, S33). Thus, after the base 2 is transported to the front end bonding position by moving the heating unit 86 so that the distance to the heating position is reduced while the base 2 is transported from the start position to the front end bonding position. The operation time for moving the heating unit 86 to the heating position is shortened.

  In the packaging process, the transport amount of at least one of the second transport and the third transport is changed according to the tension of the film 24 set by the torque adjusting mechanism 40, and the front end welding (S33) and the rear end welding (S63) are changed. At least one of the welding times is changed. Thereby, the article 3 on the pedestal 2 can be accurately packaged by the film 24 regardless of the tension of the film 24.

  In the above embodiment, the transport mechanism 50 corresponds to the “transport means” of the present invention. The heating unit 86 corresponds to the “bonding means” of the present invention. The guide roller 31 corresponds to the “guide unit” of the present invention. The CPU 201 corresponds to the “control unit” of the present invention. The front end bonding position and the rear end bonding position correspond to the “first bonding position” and the “second bonding position” of the present invention, respectively. The downstream side and the upstream side correspond to the “first direction” and the “second direction” of the present invention, respectively. The upper guide position and the lower guide position correspond to the “first guide position” and the “second guide position” of the present invention, respectively. The CPU 201 executing step S27 corresponds to the “first transport control unit” of the present invention. The CPU 201 executing step S33 corresponds to the “first adhesion control unit” of the present invention. The CPU 201 that executes steps S39 and S53 corresponds to the “second transport control means” of the present invention. The CPU 201 executing step S55 corresponds to the “guidance control means” of the present invention. The CPU 201 executing step S57 corresponds to the “third transport control unit” of the present invention. The CPU 201 executing step S61 corresponds to the “second adhesion control unit” of the present invention. The CPU 201 executing step S69 corresponds to the “fourth transport control unit” of the present invention. The torque adjustment mechanism 40 corresponds to the “tension setting means” of the present invention. The origin position and the heating position of the heating unit 86 correspond to the “separation position” and the “welding position” of the present invention, respectively.

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 2 Base 3 Article 24 Film 31 Guide roller 40 Torque adjustment mechanism 50 Conveyance mechanism 86 Heating part 103 Conveyance path 104 Movement path 201 CPU

Claims (5)

A packaging device that wraps an article placed on a pedestal with a film together with the pedestal,
Transport means capable of transporting the pedestal along a predetermined transport path;
Adhering means for adhering the film to the pedestal conveyed by the conveying means;
A member for guiding the film toward the bonding means, the guide means being movable along a movement path extending in a direction crossing the conveyance path;
Control means for controlling the operation of the packaging device,
The transport path includes, as the position of the pedestal, a start position where the pedestal before being wrapped with the film is disposed, an end position where the pedestal after being wrapped with the film is disposed, and the bonding means. Is a first bonding position where the film can be bonded to a first pedestal end which is an end in the first direction of the pedestal, and a second pedestal end where the bonding means is an end in the second direction of the pedestal A second adhesion position where the film can be adhered to, and an avoidance position where the entire pedestal is located in the first direction with respect to the movement path,
The first direction is a direction from the start position to the end position, and the second direction is a direction from the end position to the start position;
The first adhesion position, the second adhesion position, and the avoidance position are provided between the start position and the end position, and the avoidance position is provided in the first direction with respect to the second adhesion position. On the other hand, the first bonding position is provided in the second direction rather than the second bonding position,
The guiding means is between a first guiding position disposed on a different side from the bonding means with respect to the transport path and a second guiding position disposed on the same side as the bonding means with respect to the transport path. Can be moved along the movement path,
The control means includes
In the state where the guiding means is at the first guiding position and the film guided from the guiding means to the adhering means crosses the conveying path, the conveying means moves the pedestal from the starting position. First transport control means for transporting to one bonding position;
When the pedestal is conveyed to the first adhesion position by the first conveyance control means, first adhesion control means for adhering the film to the first pedestal end by the adhesion means;
A second conveyance control means for conveying the pedestal from the first adhesion position to the avoidance position by the conveyance means when the film is adhered to the first pedestal end by the first adhesion control means;
When the pedestal is transported to the avoidance position by the second transport control means, the article placed on the pedestal is moved by moving the guiding means from the first guiding position to the second guiding position. Guidance control means for coating with the film,
When the guide means is moved to the second guide position by the guide control means, the transport means extends the pedestal in a state where the film extending from the guide means toward the article intersects the transport path. Third transport control means for transporting from the avoidance position to the second adhesion position;
When the pedestal is conveyed to the second adhesion position by the third conveyance control means, second adhesion control means for adhering the film to the second pedestal end by the adhesion means;
A fourth conveyance control means for conveying the pedestal from the second adhesion position to the end position by the conveyance means when the film is adhered to the second pedestal end by the second adhesion control means;
Tension setting means for setting the tension of the film for packaging the article on the pedestal,
At least one of said 2nd conveyance control means and said 3rd conveyance control means changes the conveyance amount of the said base according to the said tension set by the said tension setting means, The packaging apparatus characterized by the above-mentioned.   The packaging apparatus according to claim 1, wherein the second conveyance control unit increases the conveyance amount of the pedestal as the tension set by the tension setting unit increases.   The packaging apparatus according to claim 1, wherein the third conveyance control unit increases the conveyance amount of the pedestal as the tension set by the tension setting unit increases. The bonding means can heat and weld the film to the first pedestal end of the pedestal at the first bonding position and the second pedestal end of the pedestal at the second bonding position. A heater,
At least one of the first adhesion control means and the second adhesion control means changes a welding time, which is a time for heating the film, according to the tension set by the tension setting means. The packaging device according to any one of claims 1 to 3.   The packaging apparatus according to claim 4, wherein the second adhesion control means shortens the welding time as the tension set by the tension setting means is larger.

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