JP2014218294A - Packaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging device which can carry out proper transportation of an article and package of the article.SOLUTION: A packaging device is equipped with a carrier mechanism and a pair of guide parts 15. The carrier mechanism comprises: a guide roller 31 for guiding a film to circumference of a pedestal and an article; a pair of side plate parts 11 for so supporting the guide roller 31 that the guide roller 31 can vertically move; an endless belt 51 which extends along a transportation route crossing a movement route of the guide roller 31 in a space between the pair of side plate parts 11; a carrier part provided on an outside surface of the belt 51; and a drive motor for rotationally driving the belt 51. The pair of guide parts 15 project from each of facing surfaces of the pair of side plate parts 11 at an upper position than the transportation route and is provided at a position where the guide parts 15 cover at least a part of a passage area, in which the carrier part passes when the belt 51 is rotated by the drive motor from an upper side.

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 device covers a film on the upper side of an article, and wraps the end of the film on a surface (hereinafter referred to as “back surface”) opposite to the side on which the article is placed of the mount. The edge of the film is fixed to the back side 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, the packaging apparatus described in Patent Document 1 arranges a film at a position that intersects a conveyance surface through which an article to be conveyed passes. The article is conveyed toward the film. The film is pulled by the article and adheres to the article. The packaging device melts the film on the upstream side in the conveyance direction of the article. The article is sealed with a film.

JP 7-187114 A

  It is assumed that the technique described in Patent Document 1 is applied to a packaging apparatus that packages an article placed on a mount. In this case, when the article placed on the mount is conveyed toward the film, a force to lift upward acts on the front end of the mount contacting the film. For this reason, there is a problem in that the pedestal is not properly conveyed and the article placed on the mount may not be wrapped.

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

  The packaging device according to the present invention is a packaging device for packaging an article placed on a pedestal with a film together with the pedestal, a guide roller for guiding the film around the pedestal and the article, and the guidance A pair of side plates that support the rollers so as to be movable in the vertical direction; and an endless belt extending in a space sandwiched between the pair of side plates along a conveyance path that intersects the movement path of the guide rollers; A transport unit provided on an outer surface of the belt; a drive motor that rotationally drives the belt; a transport mechanism that transports the base; and the transport mechanism transports the base along the transport path; and A control means for wrapping the article and the pedestal with the film by controlling the movement of the guide roller along the movement path; and the pair of sides A pair of guides provided at positions that protrude from the upper side of the conveying path of each of the parts and cover at least a part of a passing region through which the conveying unit passes when the belt is rotated by the drive motor. Department.

  According to the packaging device of the present invention, when the article and the pedestal are transported in the packaging process, the film extending from above the pair of side plate portions pulls the article and the pedestal upward, and thus the upward direction with respect to the article and the pedestal. Power works. On the other hand, the packaging device can regulate the upward movement of the conveyance unit provided on the belt by the pair of guide members. For this reason, it can prevent that a pedestal conveyed by a conveyance part and a conveyance part lifts upwards. Therefore, the packaging device can appropriately package the article and the pedestal by appropriately transporting the pedestal and the article.

  In the present invention, in the space between the pair of side plates and below the transport path, it moves up and down between a position spaced downward from the transport path and a position close to the transport path. A projection image obtained by projecting each of the pair of guide portions is positioned on at least a part above the projection image obtained by projecting the heating unit on a virtual plane parallel to the conveyance direction of the pedestal. May be. The packaging device can weld the film to the pedestal by bringing the heating unit close to the pedestal passing through the conveyance path from below. In addition, the packaging device can restrict the pedestal from being lifted upward by the pair of guide members even when the heating unit applies an upward force to the pedestal. Therefore, the packaging device can weld the film to the pedestal by the heating unit while appropriately transporting the article and the pedestal.

  In the present invention, each of the pair of guide portions includes a protruding portion that protrudes inward from the facing surfaces of the pair of side plate portions, and an extension that extends downward from the inner end portion of the protruding portion to the passage region. May be provided. Thereby, even when both sides of the direction orthogonal to the conveyance direction of the base are bent, the packaging device can prevent the base from coming into contact with the packaging device during conveyance and preventing the conveyance.

  In the present invention, each of the pair of guide portions may include a guide roller that is rotatably provided and whose rotation axis is orthogonal to the conveying direction of the pedestal. The wrapping apparatus can smoothly convey the pedestal while restricting the pedestal from being lifted upward by rotating the guide roller in contact with the pedestal.

  In this invention, the said guide roller may be provided in the downstream of the said conveyance direction among said pair of guide parts. The packaging device can restrict the pedestal from being lifted upward by the guide roller even after the transport unit has moved to the outside of the space sandwiched between the pair of side plate portions.

  In the present invention, the transport unit includes a first transport unit and a second transport unit that are spaced apart in a direction in which the belt extends, and the first transport unit protrudes outward from an outer surface of the belt. And a first extending portion that extends from a surface of the first protruding portion facing the second conveying portion to a side where the second conveying portion is provided, and the second conveying portion. Is a second projecting portion projecting outward from the outer surface of the belt, and a second projecting portion extending from a surface of the second projecting portion facing the first transport unit to a side where the first transport unit is provided. Two extending portions may be provided, and the passing region may be a region through which at least one of the first extending portion and the second extending portion passes. Even when a load is applied to the downstream end of the pedestal in the upward direction, the first extending portion of the first conveying portion and the second extending portion of the second conveying portion are in the upward direction of the pedestal. Restrict movement to Moreover, a pedestal can be conveyed to a downstream side because a 2nd protrusion part presses a pedestal. Therefore, the packaging device can stably convey the pedestal on which the article is placed. Further, since the pair of guide portions regulates that at least one of the first extending portion and the second extending portion is lifted upward, the packaging device can further appropriately transport the pedestal.

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. It is a perspective view of the cradle 12 (state where the guide part 16 has moved outside). It is a perspective view of the guide parts 161 and 165. FIG. It is a bottom view of the cradle 12. 5 is a perspective view of a support portion 128 and a handle 169. FIG. It is the figure which looked at the internal structure of the cradle 12 from the lower side. It is the figure which looked at the internal structure of the cradle 12 from the lower side. It is a perspective view of the cradle 12 (state where the guide part 16 has moved inward). 3 is a perspective view of a transport mechanism 50. FIG. FIG. 6 is an enlarged perspective view of the periphery of a support portion 54. 6 is an enlarged plan view of the periphery of a support portion 54. FIG. It is a right view of the conveyance mechanism 50 (state which made the cradles 12 and 13 substantially horizontal). It is a right view of the conveyance mechanism 50 (state which made the stand 12 and 13 the substantially vertical). 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 transport mechanism 50. FIG. It is a front view of the guide parts 14 and 15. FIG. FIG. 6 is a perspective view of a guide unit 15. FIG. 6 is a right side view of the guide unit 15. 4 is a perspective view of the vicinity of the upper end of the side plate portion 11. FIG. 4 is a perspective view of a film cassette 21 and a torque adjustment mechanism 40. FIG. 3 is a perspective view of a film roll 22 and a torque adjustment mechanism 40. FIG. It is a right view of the lever 47 (the state which shrunk the handle | pattern part 472). It is a right view of the lever 47 (state which extended the handle | pattern part 472). 4 is a perspective view of a fixing portion 48. FIG. It is a perspective view which shows the lever 47 arrange | positioned in the 1st position. It is a perspective view which shows the lever 47 arrange | positioned in a 2nd position. It is a perspective view which shows the lever 47 arrange | positioned in the 3rd position. 3 is a perspective view of a movable roller 30. FIG. It is a right view of the state which has arrange | positioned the support part 34 to the top. It is a right view of the state which has arrange | positioned the support part 34 to the lowest position. FIG. 5 is a perspective view of a pedestal guide roller 71, a holding roller 72, and a heating unit 86. 7 is a perspective view of a heating unit 86. FIG. 4 is a perspective view of a rotation control unit 80. FIG. 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. It is a top view of the base 2 (state which does not bend). It is a perspective view of the base 2 (state bent). 3 is a plan view of a pedestal 2 placed on a cradle 12. FIG. FIG. 6 is a perspective view of a pedestal 2 attached to a first transport unit 61 and a second transport unit 62. 2 is a block diagram showing an electrical configuration of the packaging device 1. FIG. It is a flowchart of a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process. It is a figure which shows the packaging process by a packaging process.

  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. An opening 805 surrounded by the lower housing 803, the two standing portions 802A, and the erection portion 802B is formed on each of the upstream side surface and the downstream side surface of the housing 800.

(1) cradle 12, 13
As shown in FIGS. 1 and 2, the cradle 12 extends in the horizontal direction from the upper end of the upstream side surface of the lower housing 803 toward the upstream side. The cradle 13 extends in the horizontal direction from the upper end of the downstream side surface of the lower housing 803 toward the downstream side. The shapes of the cradles 12 and 13 are box-like shapes that are substantially rectangular in plan view with the conveying direction as the longitudinal direction. The leg 121 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 opening 805 on the upper surface. The cradle 13 receives the pedestal 2 and the article 3 whose packaging is completed on the upper surface. Hereinafter, the upper surface of the cradle 12 is referred to as a “receiving surface 12A”, and the upper surface of the cradle 13 is referred to as a “receiving surface 13A”. With the cradles 12 and 13 extending in the horizontal direction, the receiving surfaces 12A and 13A are horizontal.

  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. The receiving surfaces 12A and 13A of the cradle 12 and 13 are close to and perpendicular to the side plate portion 11 (see FIGS. 4 and 5) that supports the cradle 12 and 13, respectively. A handle 169 is provided on the back surface 12B of the cradle 12 opposite to the receiving surface 12A and parallel 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 and parallel to the receiving surface 13A. The handles 169 and 179 are provided for the user to grip and manually swing the cradles 12 and 13 respectively.

  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. Thus, the user sets the packaging device 1 in a state in which the base 2 and the article 3 can be packaged by the film 24. Since the receiving surfaces 12A and 13A form the same plane, the pedestal 2 can be smoothly conveyed. Hereinafter, a path portion of the pedestal 2 which is a plane formed by the receiving surfaces 12A and 13A and is transported is referred to as a “transport path 103” (see FIG. 46 and the like).

  On the other hand, as shown in FIG. 3, the user can manually swing the cradle 12, 13 and switch the receiving surfaces 12 </ b> A, 13 </ b> A to be vertical. The cradle 12, 13 closes the opening 805 (see FIG. 1). As a result, the user can reduce the space required for installing the packaging device 1. Further, the user can easily carry the packaging device 1.

  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. The cradle 12 is swingably supported at the upstream end of the side plate portion 11. The cradle 13 is swingably supported at the downstream end of the side plate portion 11.

  As shown in FIG. 6, the cradle 12 includes a guide portion 161 in a portion close to the side plate portion 11 (a left upper portion in FIG. 6) on the right end surface, and a portion close to the side plate portion 11 on the left end surface. The guide unit 165 is provided. Hereinafter, the guide portions 161 and 165 are collectively referred to as “guide portion 16”. The swing shaft 129 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 (see FIGS. 4 and 5). The cradle 12 swings around the swing shaft 129. Hereinafter, for ease of explanation, an example in which the receiving surface 12A of the cradle 12 is horizontal will be described.

  As shown in FIG. 7, the guide portion 161 includes a first extending portion 162 and a second extending portion 163. The first extending portion 162 has a plate shape. The first extending portion 162 includes a base portion 162A and a protruding portion 162B. The shape of the base portion 162A is substantially square in plan view. The protruding portion 162B protrudes leftward from the upstream end portion of the base portion 162A. The shape of the protrusion 162B is a substantially rectangular shape in plan view with the left-right direction as the longitudinal direction. A rack gear 162C is provided at the downstream end of the protrusion 162B. An elongated hole 162D that penetrates in the vertical direction and extends in the horizontal direction is provided in the protruding portion 162B.

  The second extending portion 163 is provided at the right end of the base portion 162A. The second extending portion 163 includes a base portion 163A, a standing portion 163B, and a protruding portion 163C. The standing portion 163B extends in the vertical direction from the right end of the base portion 162A of the first extending portion 162 toward the upper side (in other words, the side where the receiving surface 12A of the cradle 12 is disposed). The shape of the standing portion 163B is a plate shape. The base portion 163A protrudes leftward from the lower end of the standing portion 163B. The lower surface of the base portion 163A contacts the upper surface of the base portion 162A, and fixes the second extending portion 163 to the base portion 162A. The protruding portion 163C protrudes leftward from the upper end of the standing portion 163B.

  A guide roller 163E is provided on the downstream side of the left side surface of the standing portion 163B and on the lower side of the protruding portion 163C. The guide roller 163E is rotatably supported by a rotation shaft 163D that extends horizontally from the standing portion 163B to the right.

  The guide part 165 includes a first extension part 166 and a second extension part 167. The first extending portion 166 has a plate shape. The first extending portion 166 includes a base portion 166A and a protruding portion 166B. The shape of the base portion 166A is substantially square in plan view. The protrusion 166B protrudes rightward from the downstream end of the base 166A. The shape of the protrusion 166B is a substantially rectangular shape in plan view with the left-right direction as the longitudinal direction. A rack gear 166C is provided at the upstream end of the protrusion 166B. A long hole 166D that penetrates in the vertical direction and extends in the horizontal direction is provided in the protrusion 166B.

  The second extending portion 167 is provided at the left end of the base portion 166A. The second extending portion 167 includes a base portion 167A, a standing portion 167B, and a protruding portion 167C. The standing portion 167B extends in the vertical direction from the left end of the base portion 166A of the first extending portion 166 toward the upper side (in other words, the side where the receiving surface 12A of the cradle 12 is disposed). The shape of the standing portion 167B is a plate shape. The base portion 167A protrudes rightward from the lower end of the standing portion 167B. The lower surface of the base portion 167A is in contact with the upper surface of the base portion 166A, and fixes the second extending portion 167 to the base portion 166A. The protruding portion 167C protrudes rightward from the upper end of the standing portion 167B.

  A guide roller 167E is provided on the downstream side of the right side surface of the standing portion 167B and below the protruding portion 167C. The guide roller 167E is rotatably supported by a rotation shaft 167D that extends horizontally from the standing portion 167B to the right.

  As shown in FIG. 8, the cradle 12 includes a leg 121 and a handle 169 on the back surface 12B. The shape of the leg 121 is a rod shape. The leg part 121 includes a pair of support parts 121A and a bottom part 121B. The pair of support portions 121A extends along the transport direction. The bottom 121B extends between the downstream ends of the pair of support portions 121A. The cradle 12 supports an upstream end portion of the pair of support portions 121A so as to be swingable. The leg 121 can swing around the upstream end of the pair of support parts 121A. FIG. 8 shows a state in which the pair of support portions 121A are parallel to the back surface 12B.

  As shown in FIGS. 4 and 5, when the receiving surface 12A of the cradle 12 is horizontal, the leg 121 has a pair of supporting portions 121A extending in a direction intersecting the back surface 12B. The cradle 12 can be supported from below. On the other hand, as shown in FIG. 3, when the receiving surface 12 </ b> A of the cradle 12 is vertical, the legs 121 are formed on the back surface 12 </ b> B by extending the pair of support portions 121 </ b> A in parallel with the back surface 12 </ b> B. It is accommodated in the provided recess 121C.

  As shown in FIG. 8, the handle 169 has a frame shape. The handle 169 is disposed in a concave portion 127 provided at a substantially center in the left-right direction of the upstream end portion of the back surface 12B of the cradle 12. The handle 169 is movable along the longitudinal direction of the cradle 12. As shown in FIG. 3, when the cradle 12 is vertical, the receiving surface 12 </ b> A is disposed on the side close to the side plate portion 11 of the cradle 12, and the back surface 12 </ b> B is disposed on the side separated from the side plate portion 11. Is done. For this reason, the user can easily hold the handle 169 and tilt the cradle 12 forward to make the packaging device 1 usable.

  As shown in FIG. 9, a support portion 168 is provided on the downstream side of the handle 169. The shape of the support portion 168 is a plate shape. The support portion 168 includes a base portion 168A and a protruding portion 168B. The base 168A has a substantially rectangular shape in plan view with the transport direction as the longitudinal direction. Two elongated holes 168D penetrating in the up-down direction and long in the transport direction are provided at substantially the center in the left-right direction of the base portion 168A. The two long holes 168D are arranged in the transport direction. Of the two long holes 168D, a protrusion 168F protruding downward (upward in FIG. 9) is provided on the right side of the upstream long hole 168D. A spring 124 (see FIGS. 10 and 11, described later) is attached to the protrusion 168F. A hole 168E that penetrates in the vertical direction and is long in the transport direction is provided on the downstream side of the protrusion 168F. The shape of the hole 168E is substantially rectangular in plan view. The protrusion 168B protrudes downstream from the right side of the downstream end of the base 168A. The shape of the protrusion 168B is a substantially rectangular shape in plan view with the transport direction as the longitudinal direction. A rack gear 168C is provided at the left end of the protrusion 168B.

  As shown in FIGS. 10 and 11, the first extending portion 162 of the guide portion 161 enters the cradle 12 from the outside of the right side surface of the cradle 12. The first extending portion 166 of the guide portion 165 enters the cradle 12 from the outside of the left side surface of the cradle 12. The support portion 168 is disposed at the approximate center in the left-right direction within the cradle 12 and extends in the transport direction. Cylindrical protrusions 123A, 123B, 123C (see FIG. 11), 123D, and 123E extending downward (front side in FIG. 10) are provided at substantially the center in the horizontal direction in the cradle 12. The protrusions 123A to 123E are arranged in a straight line in order from the upstream side to the downstream side. The protrusions 123A and 123B are inserted from above into the two long holes 168D of the support portion 168, respectively. The support portion 168 and the handle 169 are movable in the transport direction by the length of the two long holes 168D in the transport direction. FIG. 10 shows a state where the support portion 168 and the handle 169 have moved to the downstream side, and FIG. 11 shows a state where the support portion 168 and the handle 169 have moved to the upstream side.

  A protrusion 123 </ b> F that extends downward (front side in FIG. 10) is provided in the cradle 12. The protruding portion 123F is inserted through the hole 168E of the support portion 168 from above. One end of the spring 124 is attached to the protrusion 123F. The spring 124 extends upstream. The other end side of the spring 124 is attached to the protruding portion 168F of the support portion 168. The spring 124 biases the support portion 168 and the handle 169 toward the downstream side. When no external force is applied to the handle 169, as shown in FIG. 10, until the projecting portions 123A and 123B come into contact with the upstream ends of the two long holes 168D by the biasing force of the spring 124, as shown in FIG. The support part 168 and the handle 169 move downstream. On the other hand, when the user grasps the handle 169, the support portion 168 and the handle 169 move upstream as shown in FIG. 11 against the urging force of the spring 124.

  The pinion gear 125 is rotatably supported by the protrusion 123D. The pinion gear 125 includes two pinion gears 125A and 125B having different diameters. The pinion gear 125A is disposed on the upper side (the back side in FIG. 10), and the pinion gear 125B is disposed on the lower side (the near side in FIG. 10). The diameter of the pinion gear 125A is larger than the diameter of the pinion gear 125B. The pinion gears 125A and 125B can rotate around the protrusion 123D. The right side of the pinion gear 125B meshes with the rack gear 168C of the support portion 168. The pinion gear 125 rotates as the support portion 168 moves in the transport direction.

  As shown in FIG. 10, the protruding portion 123E is inserted into the elongated hole 166D of the guide portion 165 from above. The guide portion 165 is movable in the left-right direction by the length in the left-right direction of the long hole 166D. The downstream side of the pinion gear 125A meshes with the rack gear 166C of the guide portion 165. As shown in FIG. 11, the protruding portion 123 </ b> C is inserted through the elongated hole 162 </ b> D of the guide portion 161 from the upper side. The guide part 161 is movable in the left-right direction by the length in the left-right direction of the long hole 162D. The upstream side of the pinion gear 125A meshes with the rack gear 162C of the guide portion 161. The guide portions 161 and 165 move in the left-right direction as the pinion gear 125 rotates.

  As shown in FIG. 10, when the spring 124 urges the support portion 168 and the handle 169 moves downstream, the rack gear 168C of the support portion 168 rotates the pinion gear 125A counterclockwise as viewed from the bottom. As the pinion gear 125A rotates, the pinion gear 125B also rotates counterclockwise. As the rack gear 162C meshed with the pinion gear 125B moves to the right side, the guide portion 161 moves to the right side. As the rack gear 166C meshed with the pinion gear 125B moves to the left, the guide portion 165 moves to the left. As shown in FIG. 6, the first extending portion 162 of the guide portion 161 protrudes to the right from the cradle 12, and the second extending portion 163 is separated from the right end surface of the cradle 12 to the right. The first extending portion 166A (see FIG. 7) of the guide portion 165 protrudes to the left from the cradle 12 and the second extending portion 167 is separated from the left end surface of the cradle 12 to the left. The guide rollers 163E and 167E (see FIG. 7) are separated from the belt 51 (see FIG. 13) provided at the left and right ends of the cradle 12.

  On the other hand, as shown in FIG. 11, when the user grips the handle 169, the handle 169 moves upstream. The rack gear 168C of the support portion 168 rotates the pinion gear 125A clockwise as viewed from the bottom. As the pinion gear 125A rotates, the pinion gear 125B also rotates clockwise. As the rack gear 162C meshed with the pinion gear 125B moves to the left side, the guide portion 161 moves to the left side. As the rack gear 166C meshed with the pinion gear 125B moves to the right side, the guide portion 165 moves to the right side. As shown in FIG. 12, the first extending portion 162 (see FIG. 7) of the guide portion 161 enters the cradle 12, and the second extending portion 163 is close to the right end surface of the cradle 12. The first extending portion 166A (see FIG. 7) of the guide portion 165 enters the cradle 12, and the second extending portion 167 is close to the left end surface of the cradle 12. The guide rollers 163E and 167E are disposed on the upper side of the belt 51.

  As shown in FIG. 1, in a state where the cradle 12 is horizontal, the guide part 161 moves to the right side, and the guide part 165 moves to the left side. The downstream end portions of the guide portions 161 and 165 are in contact with the upstream side surfaces of the two standing portions 802 </ b> A of the upper housing 801. The space between the second extending portions 163 and 167 (see FIG. 7) spreads, and the guide portions 161 and 165 do not contact the pedestal 2 being conveyed. Accordingly, it is possible to prevent the conveyance of the pedestal 2 from being disturbed by the guide portions 161 and 165 coming into contact with the pedestal 2. Further, the protruding portion 163C of the guide portion 161 is disposed on the right side surface of the pedestal 2 being conveyed, and the protruding portion 167C of the guide portion 165 is disposed on the left side surface of the pedestal 2. The protrusions 163C and 167C can support the base 2 from the left and right sides. Therefore, the guide portions 161 and 165 can prevent the pedestal 2 being conveyed from falling in the left-right direction.

  On the other hand, after the user grips the handle 169 and moves the handle 169 to the outside in the longitudinal direction of the cradle 12, the cradle 12 is made vertical as shown in FIG. 3. The guide part 161 moves to the left side, and the guide part 165 moves to the right side. The length between the second extending portions 163 and 167 (see FIG. 7) is smaller than the length between the two standing portions 802A of the upper housing 801. The guide portions 161 and 165 enter the opening 805 (see FIG. 1) of the housing 800. The receiving surface 12A of the cradle 12 is in close contact with the opening 805. In this way, the packaging device 1 moves the guides 161 and 165 to the inside of the receiving base 12 simultaneously when the handle 169 and the guides 161 and 165 are interlocked and the user performs an operation of gripping the handle 169. be able to. For this reason, the user can easily perform an operation of making the cradle 12 vertical.

  As shown in FIG. 5, the cradle 13 includes a guide portion 171 at a portion near the side plate portion 11 in the right end surface, and a guide portion 175 at a portion near the side plate portion 11 in the left end surface. Hereinafter, the guide units 171 and 175 are collectively referred to as “guide unit 17”. The cradle 13 is swingably supported on the side plate portion 11 by a swing shaft that penetrates a portion close to the side plate portion 11 in the left-right direction.

  The guide part 171 includes a first extending part 172, a second extending part 173, a protruding part 174, and a guide roller 173E. The first extending portion 172 is a plate-like member that extends rightward from the right end of the cradle 13. The second extending portion 173 is a plate-like member that is substantially rectangular in side view and extends upward from the right end of the first extending portion 172. The protruding portion 174 protrudes leftward from the left side surface of the second extending portion 173. The guide roller 173E is rotatably provided on the left side surface of the second extending portion 173. The guide portion 175 includes a first extending portion 176, a second extending portion 177, a protruding portion 178, and a guide roller 177E. The first extending portion 176 is a plate-like member that extends rightward from the right end of the cradle 13. The second extending portion 177 is a plate-like member that is substantially rectangular in side view and extends upward from the right end of the first extending portion 176. The protruding portion 178 protrudes leftward from the left side surface of the second extending portion 177. The guide roller 177E is rotatably provided on the right side surface of the second extending portion 177. The shapes of the first extending portions 172 and 176 are substantially the same as those of the first extending portions 162 and 166 (see FIG. 7). A support portion (not shown) is provided on a handle 179 provided on the back surface 13 </ b> B of the cradle 13. The shape of the support portion is substantially the same as that of the support portion 168 (see FIG. 9). The configuration in the cradle 13 is substantially the same as the configuration in the cradle 12 (see FIGS. 10 and 11).

  When the handle 179 moves to the side opposite to the side supported by the side plate portion 11 of the cradle 13, the guide portion 171 moves to the right side and the guide portion 175 moves to the left side. The first extending portion 172 of the guide portion 171 protrudes to the right from the cradle 13, and the second extending portion 173 is separated from the right end surface of the cradle 13 to the right. The first extending portion 176 of the guide portion 175 protrudes to the left from the cradle 13, and the second extending portion 177 is separated from the left end surface of the cradle 13 to the left. The guide rollers 173E and 177E are separated from the belt 51 (see FIG. 13) provided at the left and right ends of the cradle 12. On the other hand, when the user grasps the handle 179, the guide unit 171 moves to the left side and the guide unit 175 moves to the right side. The first extending portion 172 of the guide portion 171 enters the cradle 13, and the second extending portion 173 is close to the right end surface of the cradle 13. The first extending portion 176 of the guide portion 175 enters the cradle 13, and the second extending portion 177 is close to the left end surface of the cradle 13. The guide rollers 173E and 177E are disposed on the upper side of the belt 51.

  In a state where the cradle 13 is horizontal, the guide unit 171 moves to the right side, and the guide unit 175 moves to the left side. The downstream end portions of the guide portions 171 and 175 are in contact with the downstream side surfaces of the two standing portions 802 </ b> A of the upper casing 801. The space between the second extending portions 173 and 177 widens, and the guide portions 171 and 175 do not contact the pedestal 2 being conveyed. On the other hand, after the user grasps the handle 179 and moves the handle 179 to the outside in the longitudinal direction of the cradle 13, the cradle 13 is made vertical as shown in FIG. 3. The guide part 171 moves to the left side, and the guide part 175 moves to the right side. The length between the second extending portions 173 and 177 is smaller than the length between the two standing portions 802A of the upper housing 801. The guide portions 171 and 175 enter the opening 805 (see FIG. 1) of the housing 800. The receiving surface 13A of the cradle 13 is in close contact with the opening 805. Therefore, the packaging device 1 can interlock the handle 179 and the guide portions 171 and 175 as in the case of the guide portions 161 and 165. For this reason, the user can easily perform an operation of making the cradle 13 vertical.

(2) Transport mechanism 50
As shown in FIG. 13, endless belts 511 and 512 are provided at the right and left ends of the cradles 12 and 13, respectively. Hereinafter, the belts 511 and 512 are collectively referred to as a “belt 51”. The belt 51 is a composite material such as fiber and urethane rubber, and is elastically deformable. The belt 51 is endless and has teeth on the inner surface. The belt 511 is installed between the pulleys 52, and the belt 512 is installed between the pulleys 53. The pulley 52 includes pulleys 521, 523, 524, 525, and 527, and the pulley 53 includes pulleys 531, 533, 534, 535, and 537. The extending directions of the respective axes of the pulleys 521, 523, 524, 525, 527, 531, 533, 534, 535, and 537 are parallel to each other. Hereinafter, the pulleys 521, 527, 531, and 537 are referred to as “first driven pulleys 521, 527, 531, and 537”, respectively. The pulleys 523, 525, 533, and 535 are referred to as “second driven pulleys 523, 525, 533, and 535”, respectively. The pulleys 524 and 534 are referred to as “main pulleys 524 and 534”, respectively. Hereinafter, in order to facilitate the explanation, the state where the receiving surfaces 12A and 13A of the receiving bases 12 and 13 are horizontal will be described as an example.

  As shown in FIGS. 4 and 5, each of the portions of the belt 51 disposed at the left and right ends of the cradle 12 is covered from the outside by a pair of covers 122. Each of the portions of the belt 51 disposed at the left and right ends of the cradle 13 is covered from the outside by the pair of covers 132. Since the covers 122 and 132 do not cover the receiving surfaces 12A and 13A, the belt 51 is exposed to the receiving surfaces 12A and 13A. In FIG. 13, the covers 122 and 132 that cover the belt 51 are omitted.

  As shown in FIG. 13, the first driven pulley 521 is rotatably provided on the downstream side of the right side surface of the cradle 13. The first driven pulley 527 is rotatably provided on the upstream side of the right side surface of the cradle 12. The axis of each of the first driven pulleys 521 and 527 faces in the left-right direction. The first driven pulleys 521 and 527 are in contact with the inside of the belt 511 and support the belt 511 in a rotatable manner.

  A guide portion 522 is provided on the upstream side of the right side surface of the cradle 13. A guide portion 526 is provided on the downstream side of the right side surface of the cradle 12. The guide portion 522 is a semicircular arc member centered on the swing shaft 139. The guide portion 526 is a semicircular arc member centered on the swing shaft 129. The guide portions 522 and 526 are disposed in the belt 511.

  The main pulley 524 is arranged at the approximate center in the conveyance direction on the left side surface of the side plate portion 111 (see FIGS. 4 and 5). The axial center of the main pulley 524 faces in the left-right direction. The main pulley 524 contacts the inside of the belt 511. The main pulley 524 has teeth on the outer surface and engages with the teeth on the inner side of the belt 511.

  The second driven 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 axis of each of the second driven pulleys 523 and 525 faces in the left-right direction. The second driven pulleys 523 and 525 are in contact with the outside of the belt 511 and support the belt 511 in a rotatable manner. As shown in FIG. 14, the rotation shaft 523 </ b> A of the second driven pulley 523 and the rotation shaft 525 </ b> A of the second driven pulley 525 are supported by the support portion 54. The support portion 54 includes a right side plate portion 541, a left side plate portion 542, and a bottom surface portion 543. The shapes of the right side plate portion 541, the left side plate portion 542, and the bottom surface portion 543 are plate-like. The bottom surface portion 543 is provided below the second driven pulleys 523 and 525. The right side plate portion 541 extends in the upper vertical direction from the right end of the bottom surface portion 543 and is disposed on the right side of the second driven pulleys 523 and 525. The left side plate portion 542 extends in the upward vertical direction from the left end of the bottom surface portion 543 and is disposed on the left side of the second driven pulleys 523 and 525.

  An elongated hole 54A that penetrates in the left-right direction and extends in the transport direction is provided on the downstream side of each of the right-side plate portion 541 and the left-side plate portion 542. The rotation shaft 523A of the second driven pulley 523 is inserted through the long hole 54A. The support portion 54 supports the second driven pulley 523 so as to be rotatable and movable in the transport direction by the length of the long hole 54A in the transport direction. An elongated hole 54B that penetrates in the left-right direction and extends in the transport direction is provided on the upstream side of each of the right side plate portion 541 and the left side plate portion 542. The rotation shaft 525A of the second driven pulley 525 is inserted through the long hole 54B. The support part 54 supports the second driven pulley 525 so as to be rotatable and movable in the transport direction by the length of the long hole 54B in the transport direction.

  The right side plate portion 541 includes projecting portions 544 and 545 that project rightward. The protruding portion 544 extends rightward from the substantially center of the lower end of the right side plate portion 541 in the conveyance direction, bends upward at the right end and extends upward, and bends rightward at the upper end and extends rightward. The protrusion 545 extends rightward from the upper side of the protrusion 544 in the right side plate 541. A spring 544A is interposed between the right end of the rotation shaft 523A and the right end of the protrusion 544. The spring 544A biases the rotating shaft 523A upstream. A spring 545A is interposed between the right end of the rotation shaft 525A and the right end of the protrusion 545. The spring 545A biases the rotating shaft 525A to the downstream side.

  As shown in FIG. 15, the left side plate portion 542 includes projecting portions 546 and 547 that project leftward. The shape of the protrusions 546 and 547 is the same as that of the protrusions 544 and 545. A spring 546A is interposed between the left end of the rotation shaft 523A and the left end of the protrusion 546. The spring 546A biases the rotation shaft 523A upstream. A spring 547A is interposed between the left end of the rotation shaft 525A and the left end of the protrusion 547. The spring 547A biases the rotating shaft 525A to the downstream side.

  As shown in FIG. 16, the axis of each of the second driven pulleys 523 and 525 is below the imaginary line 528 extending linearly in the conveying direction between the axes of the first driven pulleys 521 and 527. It is arranged at a separated position. A position where the axis of the main pulley 524 is spaced downward with respect to the virtual line 528 and downward with respect to the virtual line 529 extending linearly in the transport direction between the axes of the second driven pulleys 523 and 525. Placed in. The second driven pulley 523 comes into contact with the portion 511A of the belt 511 between the first driven pulley 521 and the main pulley 524 from the outside, and the portion 511A of the belt 511 is bent inward. The second driven pulley 525 is in contact with a portion 511B of the belt 511 that is provided between the first driven pulley 527 and the main pulley 524 from the outside, and the portion 511B of the belt 511 is bent inward. A portion 511C of the belt 511 provided between the first driven pulleys 521 and 527 extends in a straight line in the transport direction. The diameters of the first driven pulleys 521 and 527 and the second driven pulleys 523 and 525 are substantially the same. The diameter of the main driven pulley 524 is approximately twice the diameter of the first driven pulleys 521 and 527 and the second driven pulleys 523 and 525.

  The rotation shaft 523A of the second driven pulley 523 and the rotation shaft 525A of the second driven pulley 525 are movable along an imaginary line 529. When the receiving surfaces 12 </ b> A and 13 </ b> A of the cradle 12 and 13 are horizontal, the belt 511 applies a force in a direction toward the downstream side with respect to the second driven pulley 523, and is upstream with respect to the second driven pulley 525. Apply a force in the direction you head. Accordingly, the second driven pulley 523 moves to the downstream side against the force of the spring 544A (see FIG. 15), and the second driven pulley 525 moves to the upstream side against the force of the spring 544B (see FIG. 15). . The rotation shaft 523A of the second driven pulley 523 is moved to the most downstream side in the movable range in the transport direction. Further, the rotation shaft 525A of the second driven pulley 525 is moved to the most upstream side in the movable range in the transport direction.

  The shapes and arrangement of the first driven pulleys 531 and 537, the second driven pulleys 533 and 535, the main driving pulley 534, and the guide portions 532 and 536 provided on the left side of the cradle 12 and 13 are as described above. The first driven pulleys 521 and 527, the second driven pulleys 523 and 525, the main driven pulley 524, and the guide portions 522 and 526 have the same shape and arrangement. The second driven pulleys 533 and 535 are supported by a support plate having the same shape as the support portion 54 described above.

  As shown in FIG. 13, the main pulleys 524 and 534 are connected by a shaft 59 extending in the left-right direction. A shaft 581 extends rightward from the right side surface of the main pulley 524. A spur gear 58 is provided at the tip of the shaft 581. A 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 belt 51 is rotated by the second motor 222. The belt 51 conveys the pedestal 2 from the upstream side to the downstream side by the conveyance unit 60 provided on the outer surface. Hereinafter, the belt 51, the conveyance unit 60, the second motor 222, and the transmission unit 57 are collectively referred to as “conveyance mechanism 50”.

  The spur gears 56 and 58 and the transmission unit 57 rotate the main driving pulley 524 by transmitting the rotational driving force of the second motor 222 to the main driving pulley 524. Since the main driving pulleys 524 and 534 are connected by the shaft 59, the main driving pulley 534 is rotated by the rotation of the main driving pulley 524. The main pulleys 524 and 534 rotate the belts 511 and 512, respectively. The belt 51 conveys the base 2 from the upstream side to the downstream side by rotating in the counterclockwise direction when viewed from the right side.

  An example will be given where the cradles 12 and 13 swing and the receiving surfaces 12A and 13A are vertical. The guide unit 16 (see FIG. 12) moves to the inside of the cradle 12 as the handle 169 (see FIG. 12) moves, and the guide unit 17 (see FIG. 5) moves the handle 179 (see FIG. 3). Accordingly, it moves to the inside of the cradle 13. The guide roller 163E of the guide unit 16 and the guide roller 173E of the guide unit 17 are respectively disposed above the belt 511. As shown in FIG. 17, when the cradle 12 swings around the swing shaft 129 and the cradle 13 swings around the swing shaft 139, the belt 511 bends. The portion 511 </ b> A of the belt 511 is bent at a contact portion with the guide portion 522 provided at the upstream end of the cradle 13. Further, the portion 511 </ b> B of the belt 511 is bent at a contact portion with the guide portion 526 provided at the downstream end of the cradle 12. Further, the belt portion 511C moves upward to a position where it comes into contact with the guide rollers 163E and 173E, and then bends at the contact portion with each of the guide rollers 163E and 173E. The belt portion 511C bends in a substantially U shape when viewed from the right side.

  Since the belt 511 moves upward to a position where the portion 511C comes into contact with the guide rollers 163E and 173E, the belt 511 is surplus between the pulleys 52 as compared with the state where the receiving surfaces 12A and 13A are horizontal. The force applied to the downstream side of the second driven pulley 523 by the belt 511 and the force applied to the upstream side of the second driven pulley 525 are weakened. The second driven pulley 523 moves upstream by the force of the spring 544A (see FIG. 15), and the second driven pulley 525 moves downstream by the force of the spring 544B (see FIG. 15). For this reason, the surplus of the belt 511 is eliminated and the tension of the belt 511 is maintained. Therefore, even when the receiving surfaces 12A and 13A of the receiving bases 12 and 13 are vertical, the belt 511 does not loosen and does not come off from the first driven pulleys 521 and 527, the second driven pulleys 523 and 524, and the main driving pulley 524. .

  The belt 512, the first driven pulleys 531 and 537, the second driven pulleys 533 and 535, the main driving pulley 534, the guide portions 532 and 536 when the receiving surfaces 12A and 13A of the receiving bases 12 and 13 are vertical, and The behavior of the guide rollers 167E and 177E is the same as the behavior of the first driven pulleys 521 and 527, the second driven pulleys 523 and 525, the main driving pulley 524, the guide portions 522 and 526, and the guide rollers 163E and 173E.

  The conveyance unit 60 will be described. As illustrated in FIG. 13, a conveyance unit 60 is provided on each outer surface of the belts 511 and 512. The conveyance unit 60 conveys the pedestal 2 from the upstream side to the downstream side by moving from the cradle 12 to the cradle 13 as the belt 51 rotates.

  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 FIG. 18, the first transport unit 61 includes a first protruding portion 611, a first extending portion 612, and a claw portion 613 (see FIG. 19). The first protrusion 611 protrudes perpendicularly and outwardly with respect to the outer surface of the belt 51. A downstream side surface of the first protrusion 611 is inclined obliquely downward toward the downstream side. A first extending portion 612 extends from an end portion of the first projecting portion 611 opposite to the side connected to the belt 51 and a side surface on the upstream side toward the upstream side. The first extending portion 612 extends in parallel with the belt 51. A bottomed hole is provided at the end of the first protrusion 611 opposite to the side connected to the belt 51. A through hole is provided on the bottom surface of the hole. The claw portion 613 is fixed by a screw inserted into the through hole.

  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. The lengths of the first protrusions 611 and the first extending portions 612 in the left-right direction are substantially the same as the lengths of the belt 51 in the left-right direction.

  As shown in FIG. 19, a claw portion 613 is provided in a portion of the first projecting portion 611 that is in contact with the belt 51. The claw part 613 includes a first claw part and a second claw part. The first claw portion extends toward the belt 51 from each of the left and right sides on the downstream side of the surface (hereinafter referred to as “bottom surface”) of the first protrusion 611 that contacts the belt 51. The first claw portions are arranged on both outer sides in the width direction of the belt 51. The second claw portion extends from the tip of the first claw portion toward the inner side in the width direction of the belt 51 and engages with the teeth of the belt 51. The claw portion 613 fixes the first transport unit 61 to the belt 51 by sandwiching the belt 51 between the bottom surface of the first protruding portion 611 and the second claw portion.

  As shown in FIG. 18, the second transport unit 62 includes a second projecting portion 621, a second extending portion 622, and a claw portion 623 (see FIG. 19). The second protruding portion 621 protrudes in the vertical direction and the outward direction with respect to the outer surface of the belt 51. The second protrusion 621 is provided at a portion separated by a predetermined distance upstream from the first protrusion 611 of the first transport unit 61. The second extending portion 622 extends from the end of the second protrusion 621 opposite to the side connected to the belt 51 and the side surface on the downstream side toward the downstream side. The second extending portion 622 extends in parallel with the belt 51.

  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. The lengths of the second protrusion 621 and the second extending portion 622 in the left-right direction are substantially the same as the length of the belt 51 in the left-right direction. A bottomed hole is provided at the end of the second protrusion 621 opposite to the side connected to the belt 51. A through hole is provided on the bottom surface of the hole. The claw portion 623 is fixed by a screw inserted through the through hole.

  As shown in FIG. 19, a claw portion 623 is provided in a portion of the second projecting portion 621 that contacts the belt 51. The claw part 623 includes a first claw part and a second claw part. The first claw portion extends toward the belt 51 from each of the left and right sides of the bottom surface of the second protrusion 621 that contacts the belt 51. Since the shape of the first claw part and the second claw part is the same as the first claw part and the second claw part of the claw part 613 of the first transport part 61, the description thereof is omitted. The claw portion 623 fixes the second transport unit 62 to the belt 51 by sandwiching the belt 51 between the bottom surface of the second protrusion 621 and the second claw portion.

(3) Guide portions 14 and 15
The guide portions 14 and 15 will be described with reference to FIGS. In FIG. 20, the guide part 16 is omitted. As shown in FIG. 20, the guide portion 14 is provided on the left side surface of the side plate portion 111, and the guide portion 15 is provided on the right side surface of the side plate portion 112. The guide part 14 includes a first protrusion 14A, a second protrusion 14B, an extending part 14C, and a guide roller 14D. The guide part 15 includes a first protrusion 15A, a second protrusion 15B, an extension part 15C, and a guide roller 15D. The first protrusions 14A and 15A, the second protrusions 14B and 15B, the extension parts 14C and 15C, and the guide rollers 14D and 15D have the same configuration. Hereinafter, the guide unit 15 will be described, and the description of the guide unit 14 will be omitted.

  As shown in FIGS. 20 and 21, the shape of the first protrusion 15A is plate-shaped. The first protruding portion 15 </ b> A is provided on the left side surface of the side plate portion 112. The plane of the first protrusion 15A faces in the left-right direction. The left side plane of the first protrusion 15 </ b> A is connected to the right side of the side plate portion 112. The length of the first protrusion 15A in the transport direction is slightly shorter than the length of the side plate 112 in the transport direction. The lower end of the first projecting portion 15 </ b> A is disposed above the transport path 103. A gap is formed between the lower end of the first protrusion 15 </ b> A and the transport path 103. The length between the lower end of the first protrusion 15A and the transport path 103 is larger than the thickness of the base 2 (see FIG. 40). The upper end of the first projecting portion 15A is disposed below the horizontal portion 117A (see FIG. 23, described later) of the installation plate 117.

  The second protrusion 15B extends horizontally from the upper end of the first protrusion 15A to the right. The extending portion 15C extends downward from the right end of the second protruding portion 15B. The extension portion 15C has a plate shape. A step is provided at the upstream end of the extending portion 15C. An upstream end portion of the extending portion 15C extends downward from the second projecting portion 15B, bends downstream to extend in the horizontal direction, and bends downward to extend in the vertical direction. The lower end of the extended portion 15 </ b> C is disposed above the transport path 103. Further, the lower end of the extending portion 15C is disposed slightly above the lower end of the first projecting portion 15A. Specifically, as shown in FIG. 22, the lower end of the extending portion 15 </ b> C passes through the upper end of the first extending portion 612 when the first conveying portion 61 moves in the conveying direction as the belt 512 rotates. It is in contact with a region (hereinafter referred to as “passing region 108”). Therefore, when the 1st conveyance part 61 passes under the extension part 15C, the 1st conveyance part 61 is controlled to move upward.

  As shown in FIG. 21, the first projecting portion 15A and the extending portion 15C face each other, and a gap is formed therebetween. The length between the first projecting portion 15 </ b> A and the extending portion 15 </ b> C is larger than the thickness of the base 2. As illustrated in FIG. 22, the extension portion 15 </ b> C is disposed at least above the heating unit 86 (see FIG. 36, described later) and the rotation control unit 80 (see FIG. 37) when viewed from the right side. In other words, when the extension unit 15C, the heating unit 86, and the rotation control unit 80 are projected onto a virtual plane parallel to the transport direction, the projection image of the extension unit 15C is projected by the heating unit 86 and the rotation control unit 80. Located above the image.

  As shown in FIGS. 21 and 22, two guide rollers 15 </ b> D are provided at the lower end portion and the downstream end portion of the extending portion 15 </ b> C. Each of the two guide rollers 15D is rotatably supported by a rotating shaft that extends horizontally from the extending portion 15C to the right. The two guide rollers 15D are arranged in the transport direction. Both lower ends of the two guide rollers 15D protrude downward from the lower end of the extending portion 15C. As shown in FIG. 21, a gap is formed between the lower ends of the two guide rollers 15 </ b> D and the conveyance path 103. The height of the lower ends of the two guide rollers 15D is substantially the same as the height of the lower ends of the first protrusions 15A.

  The packaging device 1 includes a sensor 204 (see FIG. 44) inside the side plate portion 111. The sensor 204 is a non-contact position sensor that can detect a reflector provided on the outer surface of the belt 51. The sensor 204 is disposed below the belt 51 and irradiates light upward. The sensor 204 can detect the reflecting plate by detecting the reflected light from the reflecting plate. In addition, when the sensor 204 detects a reflecting plate, the conveyance part 60 (refer FIG. 17) provided in the belt 51 will be in the state which protruded upwards from 12A of receiving surfaces of the receiving stand 12. FIG.

(4) Film cassette 21
As shown in FIG. 23, a plate-like installation plate 117 is installed between the upper ends of the side plate units 111 and 112. The erection plate 117 includes a horizontal portion 117A extending horizontally, a vertical portion 117B extending vertically upward from an upstream end of the horizontal portion 117A, and a vertical portion extending vertically upward from a downstream end of the horizontal portion 117A. 117C. The film cassette 21 is mounted on the packaging device 1 by placing the film cassette 21 (see FIGS. 4 and 5) on the upper side of the horizontal portion 117A. A torque adjustment mechanism 40 is provided on the upper side of the horizontal portion 117 </ b> A and on the right side surface of the side plate portion 112. The torque adjustment mechanism 40 is supported on the left side of the support plate 19 that extends upward from the horizontal portion 117 </ b> A and parallel to the side plate portion 112. Details of the torque adjustment mechanism 40 will be described later. A wall plate 18 that covers the upstream side, the downstream side, and the right side of the torque adjustment mechanism 40 is provided above the horizontal portion 117A. A recessed portion 18 </ b> A that is recessed downward is provided at the upper end of the portion of the wall plate 18 that covers the right side of the torque adjustment mechanism 40.

  As shown in FIG. 24, the film cassette 21 has a substantially cylindrical shape. The film cassette 21 accommodates therein a film roll 22 (see FIG. 25) around which a film 24 is wound. The film cassette 21 includes a discharge port (not shown) extending in the width direction of the film 24 wound around the film roll 22 on the lower side. The film 24 fed out from the film roll 22 is discharged downward from the discharge port. The pedestal 2 on which the article 3 is placed is transported from the upstream side to the downstream side of the film cassette 21 and wrapped by the film 24 discharged from the film cassette 21.

  Of the two side walls orthogonal to the axial direction of the film cassette 21, the side wall 21 </ b> A disposed on the left side in a state where the film cassette 21 is mounted on the packaging device 1 is provided with a protruding portion 25 protruding to the left side. 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. When the film cassette 21 is mounted on the packaging device 1, the protruding portion 25 fits into the recess 18 </ b> A (see FIG. 23) of the wall plate 18.

  As shown in FIG. 25, 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. 24) of the film cassette 21. A part of the film gear 26 is exposed from a hole provided on the rear side of the peripheral wall of the protrusion 25. The film gear 26 rotates as the film 24 is unwound from the film roll 22.

(5) Torque adjustment mechanism 40
As shown in FIG. 25, the torque adjusting 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 first sensor 451, a second gear. A sensor 452, a detected part 46, a lever 47, a fixing part 48 (see FIG. 24) and the like are provided. The first gear 41 to the fourth gear 44 are spur gears. The first load 431 and the second load 441 include a clutch spring. The first load 431 and the second load 441 apply torque to each of the third gear 43 and the fourth gear 44 by a clutch spring.

  As shown in FIGS. 26 and 27, the lever 47 includes a main body 471. Of the swinging shaft 476 that extends horizontally from the support plate 19 (see FIGS. 23 and 24) horizontally, a portion extending in the left direction passes through the main body 471 from the right side (the front side in FIGS. 26 and 13). . The main body 471 is arranged on the left side of the support plate 19 (the back side in FIGS. 26 and 13). The main body 471 includes a first extending portion 4711 extending upward from a portion through which the swing shaft 476 is inserted, and a second extending portion 4712 extending downward. The width of the first extending portion 4711 when the lever 47 is viewed from the left-right direction is larger than the width of the second extending portion 4712. The lever 47 has a state in which the first extending portion 4711 is inclined rearward with respect to the vertical direction (see FIG. 30) around the swing shaft 476, and the first extending portion 4711 faces the upper vertical direction. It can swing between the states (see FIG. 31).

  A handle portion 472 is provided at the upper end of the first extending portion 4711. The handle portion 472 extends in the radial direction about the swing shaft 476. An end portion of the handle portion 472 on the first extending portion 4711 side enters a hole provided at the upper end of the first extending portion 4711. A flange 479 is provided at the end of the handle portion 472 on the first extending portion 4711 side. A spring 49 is provided on the flange 479. The spring 49 urges the handle portion 472 toward the main body portion 471. The handle portion 472 is movable in the radial direction about the swing shaft 476.

  The handle portion 472 includes a base 473, a first protrusion 474, and a second protrusion 475. The shape of the base 473 is cylindrical and extends in the radial direction about the swing shaft 476. The first protrusion 474 slightly protrudes outward from the peripheral wall at the center in the extending direction of the base 473. The second protrusion 475 slightly protrudes outward from the peripheral wall of the end of the base 473 opposite to the first extending portion 4711. The diameter of the first protrusion 474 is larger than the diameter of the base 473. The diameter of the second protrusion 475 is slightly larger than the diameter of the first protrusion 474.

  On the upper side of the lower end of the second extending portion 4712, a rotation shaft 477 extending in the right horizontal direction (the front side in FIGS. 26 and 27) is provided. The rotary shaft 477 is inserted from the left side into a long hole 191 (see FIG. 24) provided in the support plate 19 (see FIG. 24) and protrudes to the right side. The rotation shaft 477 rotatably supports the second gear 42 (see FIGS. 29, 30 and 31, described later) on the right side of the support plate 19.

  The detected portion 46 is provided at the lower end of the second extending portion 4712. As shown in FIG. 25, the detected portion 46 has a plate shape. The detected portion 46 is fixed to the lower end of the second extending portion 4712 with a screw. The detected portion 46 extends from the lower end of the second extending portion 4712 along the radial direction centered on the swing shaft 476, bends rightward in the horizontal direction and extends to the right side, and centers on the swing shaft 476. It bends in the radial direction and extends in the radial direction.

  As shown in FIGS. 26 and 27, a fixing portion 48 is provided above the main body portion 471 of the lever 47. As shown in FIG. 24, the fixed portion 48 has a plate shape. The fixing portion 48 is supported on the left side of the support plate 19. The fixing portion 48 extends horizontally from the portion of the wall plate 18 covering the downstream side of the torque adjusting mechanism 40 to the upstream side, bends obliquely downward and extends obliquely downward, and bends downward and downwards. Extend. A through hole 481 is provided in a portion of the fixed portion 48 that extends obliquely downward. The handle portion 472 of the lever 47 is inserted into the through hole 481.

  As shown in FIG. 28, the through hole 481 of the fixing portion 48 includes round holes 482, 483, 484 and a long hole 485. The round holes 482, 483, and 484 are arranged at equal intervals from the upstream side to the downstream side. The diameters of the round holes 482, 483, and 484 gradually become smaller from the upper surface of the fixing portion 48 toward the lower surface. The shapes of the round holes 482, 483, and 484 are substantially the same. The diameter of the lower surface side of the round holes 482, 483, and 484 is larger than the diameter of the base portion 473 of the handle portion 472 and smaller than the diameter of the first protrusion portion 474. The diameters of the upper surfaces of the round holes 482, 483, and 484 are larger than the diameters of the base 473 and the first protrusion 475. The elongated hole 485 extends between the round holes 482, 483, 484 and connects the round holes 482, 483, 484. The length of the elongated hole 485 in the left-right direction is smaller than the diameter of the round holes 482, 483, and 484, and slightly larger than the diameter of the base portion 473 of the handle portion 472.

  When the handle 472 moves to the main body 471 side with the handle 472 of the lever 47 inserted into any of the round holes 482, 483, 484, as shown in FIG. 26, the first protrusion of the handle 472 The part 474 enters any one of the round holes 482, 483, and 484. Since the diameters of the round holes 482, 483, and 484 gradually decrease toward the lower surface, the end portion of the first protrusion 474 on the main body 471 side contacts the inner walls of the round holes 482, 483, and 484. Therefore, the swing of the lever 47 is suppressed in this state. On the other hand, when the handle portion 472 of the lever 47 moves to the side opposite to the main body portion 471, the first protrusion 474 of the handle portion 472 comes out of the round holes 482, 483, and 484, as shown in FIG. The base 473 is inserted into the round holes 482, 483, and 484. Since the diameter of the base portion 473 is smaller than that of the round holes 482, 483, 484 and the long hole 485, the lever 47 can swing in this state.

  As shown in FIGS. 29 to 31, the first gear 41 is rotatably supported by the swing shaft 476. The first gear 41 is supported by a portion extending in the right direction of the swing shaft 476 extending horizontally from the support plate 19 (see FIGS. 23 and 24) horizontally on both sides. The first gear 41 is arranged on the right side of the support plate 19 (the front side in FIGS. 29, 30 and 31). In addition, since the main body 471 of the lever 47 is inserted into a portion extending in the left direction of the swing shaft 476 extending horizontally from the support plate 19 (see FIGS. 23 and 24) to both sides in the left-right direction, the first gear 41 and The main body 471 of the lever 47 is opposed to the support plate 19 with the support plate 19 in between. The first gear 41 does not swing even when the lever 47 swings about the swing shaft 476.

  The second gear 42 is rotatably supported by a rotating shaft 477 (see FIGS. 26 and 27) extending from the second extending portion 4712 of the main body 471. The rotation shaft 477 is inserted from the left side into the elongated hole 191 (see FIG. 24) of the support plate 19 and protrudes to the right side. Therefore, the second gear 42 is disposed on the right side of the support plate 19. The second gear 42 and the main body 471 of the lever 47 face each other with the support plate 19 in between. 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 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 are always engaged. The first gear 41 is fitted into the film gear 26 exposed from a hole provided on the rear side of 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 arranged on the right side of the support plate 19 (see FIGS. 23 and 24). 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 in the left horizontal direction through a hole provided in the support plate 19. As shown in FIG. 25, the first load 431 is connected to the left end of the rotation shaft of the third gear 43. As shown in FIG. 24, the first load 431 is fixed to the support plate 19 with screws. The rotation axis of the fourth gear 44 extends horizontally to the left through a hole provided in the support plate 19. As shown in FIG. 25, the second load 441 is connected to the left end of the rotation shaft of the fourth gear 44. As shown in FIG. 24, the second load 441 is fixed to the support plate 19 with screws. The first load 431 and the second load 441 apply torque to the third gear 43 and the fourth gear 44, respectively. The torque applied by the second load 441 to the fourth gear 44 is greater than the torque applied by the first load 431 to the third gear 43.

  As shown in FIG. 29, the second gear 42 is in a state in which the lever 47 is swung until the handle portion 472 extends in the vertical direction until it slightly tilts upstream, and the second gear 42 has the third gear 43 and the fourth gear 44. It does not mesh with any of these. The torque applied by the first load 431 to the third gear 43 and the 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 shown in FIG. 30, the lever 47 swings in the clockwise direction (hereinafter also referred to as “first direction”) in the right side view from the state of FIG. 29, and the handle portion 472 moves upstream. The second gear 42 meshes with the third gear 43 while being largely inclined. 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 through the first gear 41, the tension acting on the film 24 fed out from the film roll 22 becomes larger than in the case of FIG.

  As shown in FIG. 31, the lever 47 swings from the state shown in FIG. 29 in the direction opposite to the first direction, that is, in the counterclockwise direction when viewed from the right side (hereinafter also referred to as “second direction”). The second gear 42 meshes with the fourth gear 44 in a state where the handle portion 472 extends in the vertical direction. 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. Therefore, when a large torque is applied to the film gear 26 through the first gear 41, the tension acting on the film 24 fed out from the film roll 22 becomes larger than in the case of FIG.

  In the following, the position of the lever 47 shown in FIG. 29 is referred to as “first position”, the position of the lever 47 shown in FIG. 30 is referred to as “second position”, and the position of the lever 47 shown in FIG. " The tension acting on the film 24 fed out from the film roll 22 increases in the order of the first position, the second position, and the third position.

  When the lever 47 is disposed at the first position (see FIG. 29), the handle portion 472 is inserted into the round hole 483 (see FIG. 28) of the fixing portion 48. Further, when the lever 47 is disposed at the second position (see FIG. 30), the handle portion 472 is inserted into the round hole 482 (see FIG. 28) of the fixing portion 48. Further, when the lever 47 is disposed at the third position (see FIG. 31), the handle portion 472 is inserted into the round hole 483 (see FIG. 28) of the fixing portion 48. For this reason, by moving the handle 472 to the main body 471 side with the lever 47 placed in any one of the first to third positions (see FIG. 26), the handle 472 is moved into the round holes 482, 483, 484. One protrusion 474 can be fixed. Therefore, the lever 47 can be fixed in any of the first to third states, and the swinging of the lever 47 can be suppressed. On the other hand, the first protrusion 474 of the handle 472 can be removed from the round holes 482, 483, and 484 by moving the handle 472 of the lever 47 to the opposite side of the main body 471 (see FIG. 27). Therefore, since the lever 47 can swing, the position of the lever 47 can be changed to any one of the first to third positions.

  As shown in FIGS. 24 and 25, a first sensor 451 and a second sensor 452 are provided below the lever 47. The first sensor 451 and the second sensor 452 are supported by a plate-like pedestal 45 extending in the transport direction. The first sensor 451 and the second sensor 452 each include a light emitting unit and a light receiving unit. The light emitting unit and the light receiving unit are separated in the left-right direction. The first sensor 451 and the second sensor 452 specify whether or not the detected part 46 is between the light emitting part and the light receiving part depending on whether or not the light emitted from the light emitting part is received by the light receiving part.

  As shown in FIG. 30, when the lever 47 is disposed at the second position, the first sensor 451 is disposed at a position sandwiching the detected portion 46 from both the left and right sides. As shown in FIG. 31, when the lever 47 is disposed at the third position, the second sensor 452 is disposed at a position sandwiching the detected portion 46 from both the left and right sides. As shown in FIG. 29, when the lever 47 is disposed at the first position, the detected portion 46 is disposed on the upstream side of the first sensor 451 and on the downstream side of the second sensor 452.

  When the lever 47 is disposed at the first position (see FIG. 29), neither the first sensor 451 nor the second sensor 452 detects the detected portion 46. On the other hand, when the lever 47 is disposed at the second position (see FIG. 30), the first sensor 451 detects the detected portion 46, and the second sensor 452 does not detect the detected portion 46. On the other hand, when the lever 47 is disposed at the third position (see FIG. 31), the first sensor 451 detects the detected portion 46 and the second sensor 452 does not detect the detected portion 46.

(6) Movable roller 30
As shown in FIGS. 4 and 5, a protruding portion 113 protruding rightward is provided on the right side surface of the side plate portion 111. A protruding portion 114 protruding leftward is provided on the left side surface of the side plate portion 112. Each of the protrusions 113 and 114 has a box shape extending in the vertical direction. A carriage (not shown) that is driven by the rotation of the first motor 221 (see FIG. 44) is provided inside the protrusions 113 and 114. The carriage inside the protruding portion 113 is connected to the support plate portion 351 at the upstream portion of the protruding portion 113. The shape of the support plate portion 351 is a plate shape. The support portion 341 is connected to the left side of the support plate portion 351. The carriage inside the protruding portion 114 is connected to the support plate portion 352 at a portion on the upstream side of the protruding portion 114. The shape of the support plate portion 352 is a plate shape. The support part 342 is connected to the right side of the support plate part 352. Hereinafter, the support portions 341 and 342 are collectively referred to as 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. 32). Hereinafter, the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 are collectively referred to as the “movable roller 30”. The 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. 32, 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 movable roller 30 includes a cylindrical portion and a shaft portion. The shaft portion extends in the left-right direction. The cylindrical portion is provided along the peripheral wall of the shaft portion. The material of the cylindrical portion of the guide roller 31 is rubber and is fixed to the shaft portion. The cylindrical portions of the first auxiliary roller 32 and the second auxiliary roller 33 are rotatable with respect to the shaft portion. The diameters of the cylindrical portions of the first auxiliary roller 32 and the second auxiliary roller 33 are substantially the same. The diameter of the cylindrical portion of the guide roller 31 is larger than the diameter of each cylindrical portion of the first auxiliary roller 32 and the second auxiliary roller 33.

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

  As shown in FIG. 32, a plurality of holes arranged in the up-down direction are provided in a portion extending in the up-down direction of each of the support portions 341, 342. 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 movable roller 30 moves in the vertical direction.

  FIG. 33 shows a state in which the support portion 34 is disposed at the uppermost position. In this state, portions of the support portions 341 and 342 that extend in the vertical direction are disposed in the vicinity of the upstream side of the film cassette 21 (see FIG. 4) that houses the film roll 22. Further, portions of the support portions 341 and 342 extending in the transport direction are arranged below the film cassette 21. The movable roller 30 is disposed below the film cassette 21. FIG. 34 shows a state in which the support portion 34 is disposed at the lowest position. In this state, portions of the support portions 341 and 342 that extend in the transport direction are disposed below the transport path 103.

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

(7) Cutting section 77
As shown in FIG. 35, 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. 44) provided in the protruding portion 115. When the fifth motor 225 is driven, the cutting portion 77 moves in the left-right direction along the guide rail 74. When the cutting part 77 moves in the left-right direction along the guide rail 74, the blade part 771 can cut the film 24 in the width direction. As shown in FIG. 34, when the support portion 34 is disposed at the lowest position, the guide roller 31 is disposed above the guide rail 74. A blade portion 771 extending upward from the cutting portion 77 is disposed between the guide roller 31 and the first auxiliary roller 32.

(8) Pedestal guide roller 71, holding roller 72, heating unit 86, rotation control unit 80
As shown in FIG. 35, 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. 34). . 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. 34, when the support portion 34 is disposed at the lowest position, the second auxiliary roller 33 is disposed in the vicinity of the upper portion of the base guide roller 71.

  As shown in FIG. 35, 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. 44). As shown in FIGS. 33 and 34, the holding portion 78 swings, so that the holding roller 72 is disposed close to the downstream side of the pedestal guide roller 71 (see FIG. 33) and the pedestal guide roller 71. The state is switched to the state where the holding roller 72 is separated downward (see FIG. 34). As shown in FIG. 33, when the holding roller 72 is arranged close to the downstream side of the pedestal guide roller 71, the holding roller 72 contacts the conveyance path 103 from 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.

  As shown in FIG. 35, a heating unit 86 is provided in the vicinity of the downstream side of the holding roller 72. As shown in FIG. 36, 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 made of a metal plate. The heater 871 is a resistance heating type heater that is heated by passing an electric current. The heater 871 contacts the film 24 and heats the film 24. A spring (not shown) is provided on the lower surface of the heating unit 87. The spring biases the heating unit 87 upward. The holding portion 88 is a plate-like member that is bent in a substantially U shape in a side view. The holding unit 88 holds the three heating units 87 inside the U shape.

  The pedestal portion 89 supports the holding portion 88 from below. Rack gears 891 are provided at the left and right ends of the downstream side surface of the pedestal portion 89. The rack gear 891 extends in the vertical direction with the teeth facing downstream. A third motor 223 (see FIG. 44) is provided above the bottom portion 10 (see FIG. 3) and between the side plate portions 111 and 112 (see FIG. 3). A pinion gear is provided on the rotation shaft of the third motor 223. 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.

  In a state where the heating unit 86 is disposed at the uppermost position by the third motor 223 (see FIG. 35), the upper surfaces of the three heating units 87 are close to the conveyance path 103. On the other hand, the heating unit 86 is moved by the third motor 223 and the upper surfaces of the three heating units 87 are separated from the conveyance path 103 in a state where the heating unit 86 is disposed at the lowest position (see FIGS. 33 and 34).

  As shown in FIG. 35, a rotation suppression unit 80 is provided on the downstream side of the heating unit 86. The rotation suppression unit 80 is covered with an upper plate 89 on the upper side. As shown in FIG. 37, the rotation suppressing 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 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. 44) 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 rotates 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.

  FIG. 38 shows a state in which the support portion 34 is disposed at the lowest position, the pedestal guide roller 71 and the holding roller 72 are close to each other, the heating portion 86 is disposed at the uppermost position, and the stopper 81 is disposed on the upstream side. The rubber 811 of the stopper 81 is disposed at a position where it can contact the cylindrical portion of the guide roller 31 and is pressed against the guide roller 31 side. The rotation of the guide roller 31 is prohibited by the frictional force between the rubber 811 and the guide roller 31. The heating unit 87 of the heating unit 86 protrudes upward between the first auxiliary roller 32 and the holding roller 72. FIG. 39 shows a state in which the support portion 34 is disposed at the uppermost position, the base guide roller 71 and the holding roller 72 are close to each other, the heating portion 86 is disposed at the lowermost position, and the stopper 81 is disposed on the downstream side (FIG. 33). Reference). The upper surfaces of the three heating units 87 (see FIG. 38) of the heating unit 86 arranged at the lowest level are covered with a lid 86A.

(9) Pedestal 2
With reference to FIGS. 40 to 43, the base 2 on which the article 3 to be packaged by the packaging device 1 is placed will be described. The pedestal 2 is produced by bending a plate-like portion 90 that is a substantially rectangular plate body with bent portions 911 and 912. An example of the base 2 is a cardboard board.

  As shown in FIG. 40, 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. The portion sandwiched between the bent portions 911 and 912 in the plate-like portion 90 is referred to as a first plate-like portion 905, the portion sandwiched between the bent portion 911 and the side 903, and the bent portion 912 and the side. The portions sandwiched between 904 are referred to as second plate portions 906 and 907, respectively.

  A bottom surface portion 92, a side surface portion 93, and a bottom surface portion 92 are provided in order from the downstream side to the upstream side in each portion that divides each of the bent portions 911 and 912 into approximately four equal parts in the transport direction. Each of the plurality of bottom surface portions 92 includes a plurality of cuts (a pair of first bottom cuts 921, second bottom cuts 922, and third bottom cuts 923) and holes 924. Each of the pair of first bottom surface cuts 921 extends from the bent portions 911 and 912 to the left and right inner sides. The second bottom surface cut 922 and the third bottom surface cut 923 each extend in the transport direction between the pair of first bottom surface cuts 921. A cut extending between the ends on the inner side in the left-right direction of the pair of first bottom cuts 921 is a third bottom cut 923. A cut extending outward in the left-right direction from the third bottom cut 923 is a second bottom cut 922. A hole 924 is provided in a portion surrounded by the pair of first bottom surface cut 921, second bottom surface cut 922, and third bottom surface cut 923.

  Each of the plurality of side surfaces 93 includes a plurality of cuts (a pair of first side cuts 931, second side cuts 932, and third side cuts 933), and holes 934. Each of the pair of first side surface cuts 931 extends outward from the bent portions 911 and 912 in the left-right direction. The second side surface cut 932 and the third side surface cut 933 each extend between the pair of first side surface cuts 931 in the transport direction. A cut extending between ends of the pair of first side cuts 931 in the left-right direction is a third side cut 933. The cut extending inward in the left-right direction from the third side cut 933 is the second side cut 932. A hole 934 is provided in a portion surrounded by the pair of first side surface cuts 931, second side surface cuts 932, and third side surface cuts 933.

  FIG. 41 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. The first plate-like portion 905 and the second plate-like portions 906 and 907 are orthogonal to each other at 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 of the bottom surface portion 92 surrounded by the pair of first bottom surface cut 921 and second bottom surface cut 922 is disposed on the same plane as the second plate portions 906 and 907 and is orthogonal to the first plate portion 905. . Hereinafter, a portion surrounded by the pair of first bottom surface cut 921 and second bottom surface cut 922 is referred to as a “bottom surface protruding portion 926”. The bottom protrusion 926 protrudes downward with respect to the first plate-like part 905. A portion of the side surface portion 93 surrounded by the pair of first side surface cuts 931 and second side surface cuts 932 is arranged on the same plane as the first plate-like portion 905 and is orthogonal to the second plate-like portions 906 and 907. . Hereinafter, the portion surrounded by the pair of first side surface cuts 931 and second side surface cuts 932 is referred to as a “side protrusion 936”. The side protrusions 936 protrude in the left-right direction with respect to the second plate-like parts 906 and 907. The first plate-like portion 905 is formed with a hole 927 surrounded by a pair of first bottom surface cuts 921 and a third bottom surface cut 923.

  42 and 43 show the pedestal 2 in a state of being placed on the cradle 12. In order to fit the side 901 of the first plate-like portion 905 of the pedestal 2 in the space sandwiched between the first extending portion 612 and the belt 51 in the first transport portion 61, the user moves from the upstream side to the downstream side. The base 2 is moved obliquely downward toward the side. The side 901 of the first plate-like portion 905 of the pedestal 2 moves obliquely downward from the upstream side toward the downstream side, and enters a space sandwiched between the first extending portion 612 and the belt 51.

  As shown in FIG. 43, the side 901 of the pedestal 2 fits into a space sandwiched between the first extending portion 612 and the belt 51. The first extending portion 612 is in a state of covering the side 901 of the first plate-like portion 905 of the base 2 from above. Since the 1st conveyance part 61 is provided in the belt 51 arrange | positioned on the right-and-left both sides | surfaces of the receiving stand 13, the edge | side 901 of the 1st plate-shaped part 905 of the base 2 is a 1st extension part in the left-right both sides part. The space between the belt 612 and the belt 51 is sandwiched. The second protrusion 621 of the second transport unit 62 fits into the hole 927. The downstream side of the pair of first bottom surface cuts 921 enters a space sandwiched between the second extending portion 622 and the belt 51. The downstream side of the pair of first bottom surface cuts 921 fits into the space. The second extending portion 622 is in a state where the downstream side of the pair of first bottom surface cuts 921 is covered from above.

(10) Electrical Configuration The electrical configuration of the packaging device 1 will be described with reference to FIG. The packaging device 1 includes a CPU 201, a ROM 202, a RAM 203, a sensor 204, an input unit 205, and a heater 871. The CPU 201 controls the entire packaging device 1. The CPU 201 executes a program stored in the ROM 202 to execute a process (packaging process) for packaging the article 3 placed on the base 2 with the film 24. The ROM 202 stores a packaging process program executed by the CPU 201. The RAM 203 stores temporary data. The sensor 204 detects a reflecting plate provided on the outer surface of the belt 51. The input unit 205 is a plurality of input buttons that allow the user to perform an input operation on the packaging device 1. The packaging device 1 includes drive units 211 to 216, a first motor 221, a second motor 222, a third motor 223, a fourth motor 224, a fifth motor 225, and a sixth motor 226. The drive units 211 to 216 drive the first motor 221 to the sixth motor 226, respectively. The CPU 201 is electrically connected to the ROM 202, RAM 203, sensor 204, heater 871, and driving units 211 to 216. The drive units 211 to 216 are electrically connected to the first motor 221 to the sixth motor 226, respectively.

(11) Packaging Processing With reference to FIGS. 45 to 59, the packaging processing executed by the CPU 201 of the packaging device 1 will be described. 46 and FIGS. 48 to 59 show sectional views taken along the line AA in FIG. Before the user performs the operation of packaging the base 2 and the article 3 with the film 24 using the packaging device 1, the receiving surfaces 12 </ b> A and 13 </ b> A (see FIGS. 4 and 5) of the receiving bases 12 and 13 are horizontal. The cradles 12 and 13 are swung so that The receiving surfaces 12 </ b> A and 13 </ b> A of the receiving trays 12 and 13 form a conveyance path 103. The user turns on the power of the packaging device 1. When power is turned on to the packaging device 1, the CPU 201 starts the packaging process by reading and executing the program stored in the ROM 202.

  The CPU 201 initializes the state of the packaging device 1 (S11). Specifically, it is as follows. The CPU 201 drives the first motor 221 by controlling the drive unit 211 to raise the support unit 34 and arrange it at the uppermost position. Accordingly, the movable roller 30 (the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33) supported by the support portion 34 is disposed at the uppermost position (see FIG. 46). The CPU 201 drives the second motor 222 by controlling the drive unit 212, and rotates the belt 51 (see FIG. 46) of the transport mechanism 50. When the sensor 204 detects the reflecting plate, the CPU 201 controls the driving unit 212 to stop driving the second motor 222. Thus, the transport unit 60 (the first transport unit 61, the second transport unit 62, and FIG. 18) is projected upward from the receiving surface 12A of the cradle 12. The packaging device 1 is in a state in which the user can set the pedestal 2 on the receiving surface 12A of the cradle 12.

  The CPU 201 controls the driving unit 213 to drive the third motor 223, and lowers the heating unit 86 to place it at the lowest position. Accordingly, the heater 871 (see FIG. 36) on the upper surface of the heating unit 87 is separated from the conveyance path 103 (see FIG. 46). The CPU 201 controls the drive unit 214 to drive the fourth motor 224 to move the stopper 81 downstream (see FIG. 46). The CPU 201 controls the drive unit 215 to drive the fifth motor 225 to move the cutting unit 77 (see FIG. 35) to the left side. The CPU 201 controls the driving unit 216 to drive the sixth motor 226 to swing the holding unit 78. The holding roller 72 is in a state of being separated downward from the pedestal guide roller 71 (see FIG. 34).

  CPU201 judges whether the instruction | indication which starts the packaging by the film 24 of the base 2 and the articles | goods 3 was input via the input part 205 (refer FIG. 1) (S12). When the packaging start instruction is not input (S12: NO), the CPU 201 returns the process to S12. The CPU 201 continues to wait for input of a start instruction. After the packaging apparatus 1 is initialized in S <b> 11, the user manually pulls out the film 24 discharged from the discharge port of the film cassette 21 downward through the upstream side of the second auxiliary roller 33. The film 24 is guided slightly upstream by contacting the upstream side of the second auxiliary roller 33. The user pulls the leading end of the film 24 drawn downward to the lower side of the conveyance path 103 and arranges it on the downstream side of the pedestal guide roller 71 (see FIG. 46).

  The user performs an input operation for notifying the packaging apparatus 1 that the film 24 is ready via the input unit 205. The CPU 201 controls the driving unit 216 to drive the sixth motor 226 to swing the holding unit 78. As the holding portion 78 swings, the holding roller 72 is placed in the vicinity of the downstream side of the pedestal guide roller 71 (see FIG. 46). The leading end of the film 24 discharged from the film cassette 21 is sandwiched from both sides in the transport direction by the pedestal guide roller 71 and the holding roller 72. The film 24 and the transport path 103 intersect in the vicinity of the front end of the film 24.

  The user moves the lever 47 of the torque adjustment mechanism 40 (see FIG. 24) to the first position (see FIG. 29), the second position (see FIG. 30), and the third position (see FIG. 24) according to the type of the article 3 to be packaged. 31). For example, when the film 24 is to be brought into close contact with the article 3 with a strong force, the user places the lever 47 at the third position in order to increase the tension of the film 24. On the other hand, when the film cannot be pressed because it is strong against the article 3, it is necessary to reduce the tension acting on the film 24, so the user places the lever 47 in the first position. Torque is applied to the film roll 22 by the torque adjusting mechanism 40. The film 24 is in a state of extending straight in the vertical direction between the upstream side of the second auxiliary roller 33 and the portion sandwiched between the base guide roller 71 and the holding roller 72.

  The user places the base 2 on the cradle 12 (see FIGS. 42 and 43). Since the base 2 is positioned by the transport unit 60, the position of the base 2 with respect to the transport unit 60 is fixed. The side 901 of the first plate-like portion 905 of the base 2 is disposed on the downstream side, and the side 902 is disposed on the upstream side. The pedestal 2 is in a state that can be transported downstream by the transport unit 60. The user places the article 3 on the first plate-like portion 905 of the pedestal 2 placed on the cradle 12. The user inputs an instruction to start wrapping the base 2 and the article 3 with the film 24 via the input unit 205.

  As shown in FIG. 45, when a packaging start instruction is input (S12: YES), the CPU 201 controls the drive unit 212 to drive the second motor 222. The CPU 201 adjusts the rotation direction of the second motor 222 by controlling the drive unit 212 so that the belt 51 rotates in the direction in which the pedestal 2 is conveyed from the upstream side to the downstream side. The second motor 222 rotates the belt 51. The belt 51 rotates in a direction (the direction of the arrow 141 in FIG. 46) in which the conveyance unit 60 protruding upward from the receiving surface 12A of the receiving tray 12 moves from the upstream side to the downstream side. The transport unit 60 transports the base 2 from the upstream side to the downstream side along the transport path 103 (S13). Hereinafter, the rotation direction of the second motor 222 and the belt 51 when the pedestal 2 is transported from the upstream side to the downstream side is referred to as “forward direction”, and the rotation direction opposite to the forward direction is referred to as “reverse direction”.

  As shown in FIG. 46, the downstream end of the base 2 gradually approaches the film 24 extending in the vertical direction. The downstream end (side 901) of the first plate-like portion 905 of the pedestal 2 is in contact with the film 24 and then passes over the holding roller 72. The CPU 201 controls the driving unit 212 to continuously drive the second motor 222 and continuously rotate the belt 51 in the forward direction. The pedestal 2 is continuously conveyed downstream.

  As shown in FIG. 47, the second plate-like portion 907 of the base 2 enters the gap between the first projecting portion 14A and the extending portion 14C of the guide portion 14, and the second plate-like portion 906 is a guide. The portion 15 enters the gap between the first projecting portion 15A and the extending portion 15C. A side protrusion 936 that protrudes to the right with respect to the second plate-like part 906 passes below the lower end of the first protrusion 14A of the guide part 14. A side protrusion 936 that protrudes to the left with respect to the second plate-like part 907 passes below the lower end of the first protrusion 15 </ b> A of the guide part 15. Therefore, since the guide parts 14 and 15 do not contact the pedestal 2 being conveyed, the conveyance of the pedestal 2 is not disturbed. Further, the extended portions 14C and 15C can prevent the second plate-like portions 907 and 906 of the base 2 from falling inward. In addition, the bottom surface protruding portion 926 that protrudes downward from the first plate-shaped portion 905 protrudes downward from the left and right outer sides of the receiving surface 12A of the cradle 12 and is disposed outside the left and right both side surfaces of the cradle 12.

  As shown in FIG. 48, when the pedestal 2 moves downstream (arrow 142), the side 901 of the first plate-like portion 905 of the pedestal 2 pushes the film 24 downstream. A tension corresponding to the position of the lever 47 of the torque adjusting mechanism 40 acts on the film 24. The pedestal 2 moves further downstream. An upward force acts on the side 901 of the first plate-like portion 905 of the base 2. As shown in FIG. 49, the first transport unit 61 and the second transport unit 62 are inserted between the lower ends of the extending portions 14 </ b> C and 15 </ b> C of the guide units 14 and 15 and the transport path 103. The lower ends of the extending portions 14 </ b> C and 15 </ b> C are in contact with the upper end of the first extending portion 612 of the first transport unit 61 from above, and restrict the upward movement of the first transport unit 61.

  As shown in FIG. 48, the side 901 of the first plate-like portion 905 of the base 2 approaches the moving path 104 from the upstream side. The pedestal 2 moves further downstream, and the side 901 of the first plate-like portion 905 of the pedestal 2 passes above the heating unit 86. The leading end of the film 24 is sandwiched between the pedestal guide roller 71 and the holding roller 72. When the film 24 is pushed downstream by the side 901 of the first plate-like portion 905 of the pedestal 2, the leading end of the film 24 goes around the lower surface of the first plate-like portion 905 of the pedestal 2.

  The CPU 201 confirms that the side 901 of the first plate-like portion 905 of the pedestal 2 has moved to the downstream side by a predetermined distance with respect to the upper position of the heating portion 86 in S13 (see FIG. 45). Detection is based on the number of rotations of the second motor 222 after the start of conveyance. When the side 901 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance downstream from the upper position of the heating portion 86, the CPU 201 controls the driving portion 212 to control the first portion as shown in FIG. 2 The driving of the motor 222 is stopped, and the conveyance to the downstream side of the base 2 is stopped (S15).

  The CPU 201 controls the driving unit 213 to drive the third motor 223 and raise the heating unit 86 (S17). After the heating unit 86 is placed at the uppermost position, the CPU 201 controls the drive unit 213 to stop driving the third motor 223 and stop the heating unit 86 from rising. As shown in FIG. 50, when the heating unit 86 rises to the top (arrow 143), the upper surface of the heating unit 87 (see FIG. 36) of the heating unit 86 is close to the transport path 103 from below. The side 901 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance downstream from the upper position of the heating portion 86, and the film 24 is placed on the lower surface of the first plate-like portion 905 of the pedestal 2. Wrap around. Therefore, the upper surface of the heating unit 87 is in a state where the film 24 is sandwiched between the lower surface of the first plate-like portion 905 of the pedestal 2 in a state where the heating portion 86 is disposed at the uppermost position.

  As illustrated in FIG. 49, the extending portion 15 </ b> C of the guide portion 15 contacts the upper end of the first extending portion 612 of the first transport unit 61 from the upper side. Even when a force that pushes up the pedestal 2 upward is applied by raising the heating unit 86, the extending portion 15 </ b> C regulates the upward movement of the first transport unit 61. Do not move. Accordingly, the heating unit 87 of the heating unit 86 is strongly pressed against the film 24.

  As shown in FIG. 45, the CPU 201 heats the heater 871 of the heating unit 86 (S19). The heater 871 heats and melts the front end of the film 24. The front end of the melted film 24 is adhered to the vicinity of the side 901 in the lower surface of the first plate-like portion 905 of the base 2 (S19). The CPU 201 stops the heating of the heater 871 after a predetermined time has elapsed since the heating of the heater 871 was started (S20). The predetermined time is a time required for heating the temperature of the film 24 to the melting point by the heater 871. The CPU 201 controls the driving unit 213 to drive the third motor 223 and lowers the heating unit 86 (S21, arrow 144 (see FIG. 51)). The upper surface of the heating unit 87 of the heating unit 86 is separated from the conveyance path 103. After the heating unit 86 is disposed at the lowest position, the CPU 201 controls the driving unit 213 to stop the driving of the third motor 223 and stop the lowering of the heating unit 86.

  As shown in FIG. 45, the CPU 201 controls the drive unit 216 to drive the sixth motor 226 to swing the holding unit 78 (S23). As shown in FIG. 51, when the holding portion 78 swings in the direction of the arrow 145, the holding roller 72 is in a state of being separated downward with respect to the pedestal guide roller 71. The pedestal guide roller 71 and the holding roller 72 release the front end of the sandwiched film 24. The leading end of the film 24 is melted by the heater 871 heated in S19 and adhered to the lower surface of the pedestal 2. As shown in FIG. 45, the CPU 201 controls the drive unit 212 to drive the second motor 222, rotates the belt 51 in the forward direction, and conveys the base 2 to the downstream side (S25).

  As shown in FIG. 51, the transport unit 60 moves from the upstream side to the downstream side along the transport path 103, and transports the base 2 to the downstream side (arrow 146). The leading end of the film 24 is released from the pedestal guide roller 71 and the holding roller 72. The leading end of the film 24 is moved to the downstream side as the pedestal 2 moves while being adhered to the lower surface of the pedestal 2. The side 901 of the first plate-like portion 905 of the pedestal 2 crosses the intersection position 105 where the transport path 103 and the movement path 104 intersect from the upstream side toward the downstream side. In addition, since the state where the lower ends of the extending portions 14C and 15C of the guide portions 14 and 15 are in contact with the upper end of the first extending portion 612 of the first conveying portion 61 from the upper side is maintained, the upper portion of the first conveying portion 61 Movement to is continued to be regulated.

  The pedestal 2 moves further downstream (arrow 146). As the pedestal 2 moves downstream, the side 901 of the first plate-like portion 905 of the pedestal 2 and the downstream end of the article 3 are pressed against the film 24. The film 24 bends at the side 901 of the first plate-like portion 905 of the base 2 and the contact portion with the article 3. The film 24 is fed out from the film roll 22 little by little. Tension is acting on the film 24 by the torque applied from the torque adjusting mechanism 40 to the film roll 22. Accordingly, the base 2 and the article 3 are pressed against the film 24. 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 of the pedestal 2 and the downstream side of the article 3.

  With the leading end of the film 24 adhered to the lower surface of the pedestal 2, the pedestal 2 moves downstream. Torque is applied to the film roll 22 by the torque adjusting mechanism 40. For this reason, as the pedestal 2 is transported to the downstream side, the upward force on the downstream side of the first plate-like portion 905 of the pedestal 2 to which the leading end of the film 24 is bonded gradually increases. However, as illustrated in FIG. 49, the extending portion 15 </ b> C of the guide portion 15 contacts the upper end of the first extending portion 612 of the first transport unit 61 from the upper side and restricts the upward movement of the first transport unit 61. To do. The same applies to the guide portion 14. Therefore, the base 2 does not move upward.

  The CPU 201 controls the driving unit 212 to continuously drive the second motor 222 and continuously rotate the belt 51 in the forward direction. The first transport unit 61 moves onto the cradle 13, and the downstream side of the base 2 is transported to the cradle 13. The first transport unit 61 and the second transport unit 62 move to the downstream side of the guide units 14 and 15. On the other hand, as shown in FIG. 52, the two guide rollers 15D provided on the downstream side of the extending portion 15C of the guide portion 15 come into contact with the first plate-like portion 905 of the base 2 from above, and the base 2 Is restricted from moving upward. As described above, even after the first transport unit 61 moves to the downstream side of the guide units 14 and 15 and the extension unit 15C cannot regulate the upward movement of the first transport unit 61, the guide roller 15D The upward movement of the base 2 is restricted.

  As shown in FIG. 51, the pedestal 2 is continuously conveyed to the downstream side, and the film 24 is disposed at a position covering the first plate-like portion 905 of the pedestal 2 and the upper side of the article 3. The film 24 comes into close contact with the upper surface of the article 3 by the torque applied from the torque adjusting mechanism 40 to the film roll 22. An upstream end (side 902) of the first plate-like portion 905 of the base 2 passes over the base guide roller 71. Further, the base 2 is conveyed downstream (arrow 146). The side 902 of the first plate-like portion 905 of the base 2 crosses the intersection position 105 from the upstream side to the downstream side. The film 24 extending from the film roll 22 contacts the upstream side of the second auxiliary roller 33 and is slightly guided upstream, contacts the lower side of the second auxiliary roller 33 and extends downstream, and the first auxiliary roller 32 is in contact with the lower side of 32 and extends further downstream, and reaches the side 901 of the first plate-like portion 905 of the base 2 and the downstream side of the article 3. The guide roller 31 is disposed above the film 24 extending between the first auxiliary roller 32 and the base 2 and the article 3.

  As shown in FIG. 45, the CPU 201 starts conveying the downstream side of the pedestal 2 in S <b> 25 that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved downstream from the intersection position 105. Is detected based on the number of rotations of the second motor 222. When the side 902 of the first plate-like portion 905 of the pedestal 2 moves downstream from the intersection position 105, the CPU 201 controls the drive unit 212 to stop driving the second motor 222 and transport the pedestal 2. Stop (S26).

  The CPU 201 controls the drive unit 211 to drive the first motor 221 and lower the support unit 34. The movable roller 30 supported by the support part 34 moves from the highest level to the lowest level. The guide roller 31 descends from the uppermost side to the lowermost side along the movement path 104 (S27). The guide roller 31 comes into contact with the film 24 arranged below from above, and guides the film 24 downward along the movement path 104.

  As shown in FIG. 53, the guide roller 31 descends along the movement path 104 (arrow 147) and is disposed at the lowest position. The guide roller 31 is in contact with the conveyance path 103 from below. The film 24 is disposed at a position that covers the first plate-like portion 905 of the base 2 and the upstream side of the article 3. The film 24 extends from the portion of the pedestal 2 that contacts the side 902 of the first plate-like portion 905 toward the guide roller 31, contacts the downstream side and the lower side of the guide roller 31, and extends to the upstream side. It contacts the lower side of the roller 32 and extends further upstream, and contacts the lower side and the upstream side of the second auxiliary roller 33 to reach the film roll 22. A portion of the film 24 between the portion that contacts the lower side of the guide roller 31 and the portion that contacts the lower end of the first auxiliary roller 32 extends in a substantially horizontal direction and extends upward from the cutting portion 77. It will be in the state arrange | positioned below the upper end of (refer FIG. 55). In the state where packaging device 1 is initialized (refer to S11), since cutting part 77 has moved to the left side, film 24 and blade part 771 are not in contact at this point.

  As shown in FIG. 45, the CPU 201 controls the driving unit 212 to drive the second motor 222 to rotate the belt 51 in the reverse direction. The transport unit 60 moves from the downstream side to the upstream side, and transports the base 2 to the upstream side along the transport path 103 (S29). The pedestal 2 is conveyed in the reverse direction (the direction from the downstream side toward the upstream side).

  As shown in FIG. 54, when the base 2 moves from the downstream side to the upstream side (arrow 148), the side 902 of the first plate-like portion 905 of the base 2 approaches the intersection position 105 from the downstream side. The side 902 of the first plate-like portion 905 of the pedestal 2 crosses the intersection position 105 from the downstream side toward the upstream side. The side 902 of the first plate-like portion 905 of the pedestal 2 passes above the heating unit 86 and moves upstream. The guide roller 31 relatively moves toward the downstream side from the side 902 while being in contact with the lower surface of the first plate-like portion 905 of the base 2 from below. The film 24 is sandwiched between the lower surface of the first plate-like portion 905 of the base 2 and the guide roller 31.

  As shown in FIG. 55, the film 24 extends downstream from the portion that contacts the side 902 of the first plate-like portion 905 of the pedestal 2 along the lower surface of the first plate-like portion 905, with respect to the guide roller 31. Wrapping from the upper side to change the direction, extending from the lower side of the guide roller 31 to the upstream side, contacting the lower side of the first auxiliary roller 32 and extending further to the upstream side, lower side and upstream side of the second auxiliary roller 33 To the film roll 22.

  As shown in FIG. 45, the CPU 201 confirms that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved upstream by a predetermined distance with respect to the upper position of the heating portion 86 in S29. It is detected based on the number of rotations of the second motor 222 after starting the conveyance to the motor. When the side 902 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance upstream from the position above the heating unit 86, the CPU 201 controls the drive unit 212 to stop driving the second motor 222. Then, the conveyance of the base 2 is stopped (S30).

  The film 24 extending from the guide roller 31 to the film roll 22 via the first auxiliary roller 32 and the second auxiliary roller 33 is supported by the first auxiliary roller 32 and the second auxiliary roller 33 supporting the film 24 on the lower side. The first plate-like portion 905 of the pedestal 2 is disposed on the lower side in the vicinity of the side 902. For this reason, even if the pedestal 2 moves upstream in S29 and S30, the film 24 does not contact the pedestal 2. As shown in FIG. 55, the film 24 extends downstream from the side 902 of the first plate-like portion 905 of the base 2 along the lower surface.

  As shown in FIG. 45, the CPU 201 controls the drive unit 214 to drive the fourth motor 224 to move the stopper 81 of the rotation suppression unit 80 to the upstream side (S31). As shown in FIG. 56, the guide roller 31 that has moved to the lowest position is disposed on the upstream side of the stopper 81 of the rotation suppressing unit 80. When the stopper 81 moves upstream (arrow 149), the rubber 811 of the stopper 81 comes close to the guide roller 31 and sandwiches the film 24 wound around the guide roller 31 with the guide roller 31. When the rubber 811 of the stopper 81 pushes the guide roller 31 upstream through the film 24, the rotation of the guide roller 31 is prohibited. The film 24 is sandwiched between the guide roller 31 and the rubber 811 of the stopper 81.

  The CPU 201 controls the drive unit 215 to drive the fifth motor 225 to move the cutting unit 77 from the left side to the right side along the guide rail 74 (see FIG. 35) (S33). As shown in FIG. 55, the upper end of the blade portion 771 of the cutting portion 77 is disposed above the film 24 extending substantially horizontally between the lower side of the guide roller 31 and the lower side of the first auxiliary roller 32. For this reason, when the cutting part 77 moves to the right side, the film 24 is cut by the blade part 771 at a portion extending between the guide roller 31 and the first auxiliary roller 32. The cutting part 77 separates the part of the film 24 that covers the first plate-like part 905 and the article 3 of the pedestal 2 from the part wound around the film roll 22.

  Here, when the blade portion 771 is moved in the right direction in a state of being in contact with the film 24 to cut the film 24, a force for guiding the film 24 to the right side acts. However, the rotation of the guide roller 31 is prohibited by the stopper 81. The stopper 81 sandwiches the film 24 between the guide roller 31 and the stopper 81. For this reason, since the position of the film 24 with respect to the guide roller 31 becomes fixed, the film 24 does not move to the right side by the blade portion 771. Therefore, the blade part 771 can cut the film 24 appropriately. Even after the film 24 is cut, the guide roller 31 and the stopper 81 maintain the state where the film 24 is sandwiched. Therefore, the film 24 is not displaced from the article 3 after being cut by the blade 771.

  As shown in FIG. 57, after the film 24 is cut, the cut end of the film 24 extending from the film roll 22 hangs down on the lower side of the pedestal guide roller 71. As shown in FIG. 45, the CPU 201 controls the drive unit 216 to drive the sixth motor 226 to swing the holding unit 78 (S35). As shown in FIG. 58, the holding part 78 swings in the direction of the arrow 150. The holding roller 72 is disposed in the vicinity of the downstream side of the pedestal guide roller 71. An end portion of the film 24 cut by the cutting portion 77 is sandwiched between the pedestal guide roller 71 and the holding roller 72.

  The CPU 201 controls the driving unit 213 to drive the third motor 223 and raise the heating unit 86 (S37). After the heating unit 86 is placed in the uppermost position, the CPU 201 controls the driving unit 213 to stop driving the third motor 223 and stop the heating unit 86 from rising. As shown in FIG. 58, the upper surface of the heating unit 87 (see FIG. 36) of the heating unit 86 is close to the conveyance path 103 from below with the heating unit 86 raised to the top (arrow 151). .

  Note that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved upstream by a predetermined distance from the position above the heating portion 86. In the vicinity of the side 902 in the lower surface of the first plate-like portion 905 of the base 2, the film 24 guided by the guide roller 31 is arranged along the lower surface. Therefore, when the heating unit 86 is raised and arranged at the uppermost position, the upper surface of the heating unit 87 is in a state where the film 24 is sandwiched between the base 2 and the upper surface.

  As shown in FIG. 45, the CPU 201 heats the heater 871 of the heating unit 86 (S39). The heater 871 heats the end portion of the film 24 cut by the cutting portion 77 to melt the film 24. The melted film 24 is bonded to the vicinity of the side 902 of the first plate-like portion 905 of the base 2 (S39). The film 24 cut from the film roll 22 is in a state of covering the base 2 and the article 3.

  The CPU 201 stops the heating of the heater 871 after a predetermined time has elapsed since the heating of the heater 871 was started in S39 (S40). The CPU 201 controls the driving unit 213 to drive the third motor 223 and lowers the heating unit 86 (S41, arrow 152 (see FIG. 59)). The upper surface of the heating unit 87 is separated from the conveyance path 103. After the heating unit 86 is disposed at the lowest position, the CPU 201 controls the driving unit 213 to stop the rotation of the third motor 223.

  The CPU 201 controls the drive unit 214 to drive the fourth motor 224 to move the stopper 81 of the rotation suppression unit 80 to the downstream side (S43, arrow 153 (see FIG. 59)). The stopper 81 moves downstream, and the rubber 811 provided on the stopper 81 is separated from the guide roller 31. The guide roller 31 is in a rotatable state.

  The CPU 201 confirms that the first transport unit 61 has moved downstream and has reached the downstream end of the cradle 13, and the second motor 222 after starting the transport of the pedestal 2 to the downstream side in S 45. It detects based on the number of rotations. When the first transport unit 61 moves downstream and reaches the downstream end of the cradle 13, the CPU 201 controls the drive unit 212 to stop driving the second motor 222 and transport the pedestal 2. Is stopped (S46). The packaging process ends.

  In S <b> 35, the end of the film 24 cut by the cutting portion 77 is held between the pedestal guide roller 71 and the holding roller 72 by swinging the holding portion 78. Therefore, the user can continuously wrap the next pedestal 2 and the article 3 with the film 24 without pulling out the film 24 from the film cassette 21 and sandwiching the tip between the pedestal guide roller 71 and the holding roller 72. It becomes possible. When the user performs the packaging operation continuously, the CPU 201 drives the second motor 222 by controlling the driving unit 212 so that the belt 51 rotates in the reverse direction after the packaging process is completed. The CPU 201 moves the transport unit 60 from the downstream side to the upstream side and arranges the transport unit 60 on the cradle 12. At the same time, the CPU 201 brings the support part 34 and the cutting part 77 into a state immediately after initialization (S11).

  As described above, in the packaging device 1, when the pedestal 2 and the article 3 are conveyed in the packaging process, a force that lifts the pedestal 2 and the article 3 upward works from the film 24. On the other hand, in the packaging device 1, the guide portions 14 and 15 regulate the upward movement of the first conveyance unit 61 provided on the belts 51 and 52. For this reason, the packaging apparatus 1 can prevent the base 2 and the article 3 transported by the first transport unit 61 from being lifted upward. Therefore, the packaging device 1 can appropriately package the base 2 and the article 3 with the film 24 by appropriately transporting the base 2 and the article 3.

Moreover, the packaging apparatus 1 can weld the film 24 to the base 2 by making the heating part 86 approach from the bottom with respect to the base 2 which passes the conveyance path | route 103. FIG.

Further, the extending portions 14C and 15C are disposed at least on the upper side of the heating unit 86 in the right side view. In other words, when the extended portions 14C and 15C and the heating portion 86 are projected onto a virtual plane parallel to the transport direction, the projected images of the extended portions 14C and 15C are arranged above the projected image of the heating portion 86. The Therefore, even when the heating unit 86 applies an upward force to the pedestal 2, the guide units 14 and 15 regulate the upward movement of the first transport unit 61, so that the pedestal 2 is lifted upward. Can be prevented. For this reason, the heating part 86 can be in close contact with the film 24 and appropriately heated to melt the film 24. Therefore, the packaging device 1 can reliably weld the film 24 to the base 2 by the heating unit 86.

  In the packaging device 1, a gap is provided between the first projecting portion 14A and the extending portion 14C, and between the first projecting portion 15A and the extending portion 15C. The second plate-like portions 906 and 907 erected vertically from the first plate-like portion 905 of the base 2 pass through the gap. Thus, since the packaging apparatus 1 can prevent the base 2 from coming into contact with the guide portions 14 and 15 when the base 2 is transported, the base 2 can be transported appropriately.

  In addition, the packaging device 1 can smoothly transport the pedestal 2 while restricting the pedestal 2 from being lifted upward by rotating the guide rollers 14D and 15D while contacting the pedestal 2. Further, the packaging device 1 can restrict the pedestal 2 from being lifted upward by the guide rollers 14D and 15D even after the first transport unit 61 has moved to the downstream side of the guide portions 14 and 15.

  Note that, even when a load is applied to the downstream end of the pedestal 2 in the upward direction, the transport unit 60 has a first extension 612 of the first transport unit 61 and a second extension of the second transport unit 62. The installation part 622 restricts the upward movement of the base 2. Moreover, when the 2nd protrusion part 621 pushes the base 2, the base 2 can be conveyed downstream. Therefore, the packaging device 1 can stably transport the base 2 on which the article 3 is placed.

  In addition, this invention is not limited to the said embodiment, A various change is possible. The packaging device 1 may include only one of the guide portions 14 and 15. For example, the guide parts 14 and 15 may be provided only on the upstream side of the side plate part 11 or may be provided only on the downstream side. A roller may be provided at the lower end of the extending portions 14C and 15C over the entire area in the transport direction. Further, an endless belt that is movable in the transport direction may be provided at the lower ends of the extending portions 14C and 15C over the entire region in the transport direction. The belt may contact the upper end of the first extending portion 611 of the first conveyance unit 61 and rotate following the movement of the first conveyance unit 61. The guide rollers 14D and 15D may be provided on the upstream side of the extending portions 14C and 15C, respectively, or may be provided only on the upstream side. The number of guide rollers 14D and 15D may be one, or may be three or more. The guide rollers 14D and 15D may not be provided.

  When the extension unit 15C, the heating unit 86, and the rotation control unit 80 are projected onto a virtual plane parallel to the transport direction, the projection image of the extension unit 15C is above the projection image of the heating unit 86 and the rotation control unit 80. It does not need to be arranged. For example, the projected image of the extending portion 15C may be arranged on the upstream side with respect to the projected images of the heating unit 86 and the rotation control unit 80, or may be arranged on the downstream side.

  You may make the height of the 2nd protrusion part 621 of the 2nd conveyance part 62 larger than the height of the 1st protrusion part 611 of the 1st conveyance part 61. FIG. In this case, the lower ends of the extending portions 14C and 15C of the guide portions 14 and 15 may extend downward to a region through which the upper end of the second extending portion 622 passes. In this case, the lower ends of the extending portions 14 </ b> C and 15 </ b> C may contact the upper end of the second extending portion 622. Moreover, when the height of the 1st protrusion part 611 of the 1st conveyance part 61 and the height of the 2nd protrusion part 621 of the 2nd conveyance part 62 are the same, the lower end of extension part 14C, 15C is 1st extension. You may contact the upper end of the installation part 612 and the upper end of the 2nd extension part 622. FIG.

The second motor 222 functions as the “drive motor” of the present invention. The CPU 201 functions as the “control unit” of the present invention.

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 2 Base 3 Goods 11, 111, 112 Side board part 12, 13 Receptacle 12A, 13A Receptacle surface 14, 15 Guide part 14A, 15A 1st protrusion part 14B, 15B 2nd protrusion part 14C, 15C Extension part 14D , 15D Guide rollers 16, 17 Guide portion 21 Film cassette 22 Film roll 24 Film 26 Film gear 30 Movable roller 31 Guide roller 32 First auxiliary roller 33 Second auxiliary roller 40 Torque adjustment mechanism 41 First gear 42 Second gear 43 First 3 gear 44 4th gear 46 detected part 47 lever 48 fixing part 51, 511, 512 belt 52, 53 pulley 60 transport part 61 first transport part 62 second transport part 86 heating part 103 transport path 104 moving path 108 passing area 125, 125A, 125B Pinion gear 127 Recesses 161, 165, 17 175 Guide portions 162, 166, 172, 176 First extending portion 162C, 168C Rack gears 163, 167, 173, 177 Second extending portions 163E, 167E, 173E, 177E Guide rollers 169, 179 Handle 431 First load 441 Second load 451 First sensor 452 Second sensor 472 Handle 474 First protrusion 521, 527, 531, 537 First driven pulley 523, 525, 533, 535 Second driven pulley 523A, 525A Rotating shaft 524, 534 Main drive Pulley 528, 529 Virtual line 544A, 545A, 546A, 547A Spring

Claims (6)

A packaging device that wraps an article placed on a pedestal with a film together with the pedestal,
A guide roller for guiding the film around the pedestal and the article;
A pair of side plate portions that support the guide roller movably in the vertical direction;
An endless belt extending along a conveyance path intersecting the movement path of the guide roller in a space sandwiched between the pair of side plates, a conveyance section provided on an outer surface of the belt, and the belt A transport mechanism that includes a drive motor that rotates and transports the pedestal;
Control means for packaging the article and the pedestal with the film by controlling the conveyance mechanism to convey the pedestal along the conveyance path and to move the guide roller along the movement path. ,
Of the opposing surfaces of the pair of side plate portions, the upper surface protrudes from the upper side of the conveyance path, and is provided at a position covering from above the passage region through which the conveyance unit passes when the belt is rotated by the drive motor. And a pair of guide portions. A heating unit that is movable in a vertical direction between a position sandwiched between the pair of side plates and below the transfer path, and a position spaced downward from the transfer path and a position close to the transfer path. With
The projected image obtained by projecting each of the pair of guide portions is positioned at least partly above the projected image obtained by projecting the heating unit with respect to a virtual plane parallel to the conveyance direction of the pedestal. Item 4. The packaging device according to Item 1. Each of the pair of guide portions is
A projecting portion projecting inwardly from each opposing surface of the pair of side plate portions;
The packaging device according to claim 1, further comprising an extending portion that extends downward from an inner end portion of the projecting portion to the passage region.   The packaging device according to any one of claims 1 to 3, further comprising a guide roller that is rotatably provided in each of the pair of guide portions, and whose rotation axis is orthogonal to the conveying direction of the pedestal.   The packaging apparatus according to claim 4, wherein the guide roller is provided on the downstream side in the transport direction of the pair of guide portions. The transport unit includes a first transport unit and a second transport unit that are spaced apart in a direction in which the belt extends.
The first transport unit is
A first extension extending outward from an outer surface of the belt, and a first extension extending from a surface of the first protrusion facing the second conveyance unit to a side where the second conveyance unit is provided. Equipped with
The second transport unit is
A second projecting portion projecting outward from an outer surface of the belt; and a second extension extending from a surface of the second projecting portion facing the first transport unit to a side where the first transport unit is provided. Equipped with
The passage area is
The packaging device according to any one of claims 1 to 5, wherein at least one of the first extending portion and the second extending portion passes through the region.

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