JP6213392B2 - Packaging equipment - Google Patents

Description

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

  There has been proposed a packaging device that covers and wraps a pedestal and an article with a film while the article is placed on a plate-like pedestal. For example, in the packaging device described in Patent Document 1, when a pedestal on which an article is placed is conveyed, the film is disposed at a position where the pedestal intersects the conveyance surface through which the pedestal passes. The pedestal and the article are conveyed toward the film from the upstream side. The film is pulled downstream in contact with the pedestal and the article. The film is pressed against the article with a strength corresponding to the tension, thereby being in close contact with the article and packaging the pedestal and the article.

JP2013-233968A

  In the said packaging apparatus, when the tension | tensile_strength of a film is large, strong force is applied with respect to a base and articles | goods from a film. In this case, the pedestal and the article may be deformed by the film.

  The objective of this invention is providing the packaging apparatus which can suppress the deformation | transformation of the base and articles | goods by a film.

  The packaging device of the present invention is a packaging device for packaging a pedestal and an article placed on the pedestal with a film, the film roll around which the film is wound, and the article placed thereon A transport mechanism that transports the pedestal, a movement path that extends in a direction that intersects with a transport path through which the pedestal that is transported by the transport mechanism passes, and a guide unit that guides the film; A moving mechanism that moves the film in a first direction that is a moving direction of the film that is fed from the film roll when the pedestal is conveyed by the conveying mechanism; and a first that can specify the amount of movement of the film by the moving mechanism A first acquisition means for acquiring a parameter; a first adhesion means for adhering a part of the film to the pedestal; and Conveying means for conveying the pedestal from the upstream side to the downstream side in the conveying direction with respect to the intersection position, which is a position where the moving path intersects, and conveying the pedestal by the conveying means, the downstream side from the intersection position In addition, when the upstream end of the pedestal has moved, the guide unit moving means for moving the guide unit along the movement path, and the guide unit moving means for moving the guide unit, Relative movement means for moving the upstream end of the pedestal relative to the intersection position relative to the upstream side, and relative movement of the pedestal by the relative movement means, and the upstream side relative to the intersection position, When the upstream end portion of the pedestal is disposed, the upstream end portion of the pedestal is moved to the upstream side by the second adhering means for bonding the other part of the film to the pedestal and the relative moving means. phase The film is moved in the first direction by the moving mechanism according to the amount of movement specified by the first parameter acquired by the first acquisition means for at least a part of the period before the movement. And a moving means.

  According to the present invention, the packaging device can weaken the tension of the film by forcibly feeding out the film necessary for packaging the base and the article from the film roll. Therefore, since the packaging apparatus can weaken the force when the film is pressed against the pedestal and the article being conveyed, the pedestal and the article can be prevented from being deformed by the film.

  The first moving means starts the movement of the film in the first direction by the moving mechanism before adhering a part of the film to the pedestal by the first adhering means, and the guiding portion moving means Until the relative movement of the upstream end of the pedestal by the relative movement means is started before the relative movement to the upstream side is started. The movement in the first direction may be terminated. Thereby, the packaging device can appropriately weaken the tension of the film in a state before a part of the film adheres to the pedestal.

  The first moving means is configured by the moving mechanism between the time when the part of the film is adhered to the pedestal by the first adhering means and before the movement of the guiding part by the guiding part moving means is started. The movement of the film in the first direction is started, and after the movement of the guide portion by the guide portion moving means is finished, the relative end of the upstream end of the pedestal by the relative moving means is relative to the upstream side. Before the movement is started, the movement of the film in the first direction by the movement mechanism may be terminated. Thereby, the packaging device can appropriately weaken the tension of the film when the film comes into close contact with the article in accordance with the conveyance of the base and the article in the downstream direction.

  A detection unit capable of detecting the size of the article, wherein the first acquisition means sets the film feeding speed and feeding time according to the size of the article detected by the detection unit; You may acquire as a 1st parameter. If the size of the article is relatively large, the amount of film required to wrap the pedestal and the article also increases. On the other hand, if the film is unnecessarily unwound from the film roll, the extra film may interfere with the packaging. On the other hand, the packaging device can change the amount of the film fed from the film roll according to the size of the article. Thus, the packaging device can appropriately feed out the film necessary for packaging the article from the film roll. In addition, the packaging device can feed an appropriate amount of film from the film roll by adjusting the feeding speed and feeding time.

  The detection unit may detect the height of the article from the pedestal and the length in the transport direction as the size of the article. In this case, the packaging device can detect the size of the article by a simple method.

  The first acquisition unit may acquire the feeding speed that is relatively faster as the height is larger. In this case, the packaging device can feed out a sufficient amount of film from the film roll to wrap an article having a large height.

  The first acquisition means may acquire the feeding time that is relatively longer as the length is larger. In this case, the packaging device can feed out a sufficient amount of film from the film roll to wrap a long article.

The transport means transports the pedestal at a constant transport speed irrespective of the feed speed acquired by the first acquisition means, and the relative movement means adjusts the feed speed acquired by the first acquisition means. Regardless, the pedestal may be relatively moved at a constant transport speed. The packaging device can control the feeding amount of the film by the feeding speed by keeping the conveyance speed constant. Therefore, the packaging device can easily feed a sufficient amount of film from the film roll to wrap the pedestal and the article.

  The first moving means may move the film in the first direction at a predetermined initial feeding speed in a state before the size of the article is detected by the detection unit. In this case, the packaging device can feed out the film from the film roll even in a state before the size of the article is detected.

  The storage unit stores a table in which the size of the article and the first parameter are associated with each other, and the first acquisition unit includes the first parameter associated with the size of the article detected by the detection unit. May be acquired based on the table stored in the storage unit. In this case, the packaging device can easily acquire the first parameter corresponding to the size of the article.

  The moving mechanism moves the film in the first direction by rotating the film roll, and acquires a second parameter corresponding to the winding amount of the film wound around the film roll. An acquisition unit, wherein the first movement unit is responsive to the first parameter acquired by the first acquisition unit and the amount of movement specified by the second parameter acquired by the second acquisition unit. The film roll may be moved by rotating the film roll by the moving mechanism. Depending on the amount of the film wound around the film roll, the amount of rotation of the film roll by the moving mechanism required to feed out a desired amount of film from the film roll is different. The reason is that the length (film roll radius) from the rotation axis of the film roll to the film immediately before being fed changes in accordance with the amount of the wound film. When the radius of the film roll is different, the amount of film fed out from the film roll is different even if the rotation amount of the film roll is common. On the other hand, a packaging apparatus changes the rotation speed and rotation time of a film roll according to the quantity of the wound film. Thereby, the packaging device can appropriately feed out an amount of film necessary for packaging the article from the film roll.

  After the guide part is moved by the guide part moving means and after the movement of the film in the first direction by the first moving means is finished, the other part of the film is moved by the second adhesive means. There may be provided second movement control means for moving the film in a second direction opposite to the first direction by the moving mechanism during at least a part of time before adhering to the base. In this case, since the packaging apparatus can adhere the film to the pedestal and the article, the pedestal and the article can be appropriately packaged.

  A housing having at least a part of the transport path and an internal space in which the guide portion is disposed, and a first position between the movement path and the outside of the housing in the transport path, A plurality of first sensors arranged in parallel to a height direction of the article conveyed by the conveyance mechanism and capable of detecting objects facing each other at different positions in the height direction; Used to detect a foreign object that is an object different from the pedestal and the article based on the judgment result by the sensor judgment means, and a sensor judgment means for judging which of the sensors can face the pedestal or the article Whether the foreign matter is detected based on the sensor selection means capable of selecting the foreign matter sensor to be selected from the plurality of first sensors and the detection result by the foreign matter sensor selected by the sensor selection means. Or it may be a foreign substance determination means for determining.

  In this case, the base and the article are packaged with a film in the internal space of the housing. The pedestal and the article after packaging are conveyed from the internal space of the housing to the outside of the housing via the first position. A plurality of first sensors capable of detecting objects facing each other at different positions in the height direction are provided along the first position. A foreign object sensor is selected from the plurality of first sensors based on the result of determining which of the plurality of first sensors can face the pedestal or the article. Based on the detection result by the selected foreign object sensor, it is determined whether or not a foreign object has been detected. Therefore, the packaging device can accurately determine whether or not the object entering the housing is a foreign object.

  A position specifying unit that specifies a position of the pedestal being transported by the transport mechanism; and the sensor selecting unit is configured to detect the sensor when the position of the pedestal specified by the position specifying unit is the first position. When the foreign matter sensor is selected based on a judgment result by the judging means, and the position of the pedestal specified by the position specifying means is different from the first position, all of the plurality of first sensors are used as the foreign matter sensors. You may choose. In this case, while the pedestal and the article are in a position facing any one of the plurality of first sensors, a plurality of the first sensors that do not face the pedestal and the article are used for detecting foreign matter. While the pedestal and the article are in positions that do not face all of the plurality of first sensors, all of the plurality of first sensors are used for foreign object detection. Therefore, the packaging device can detect the foreign matter entering the housing while preventing the pedestal and the article from being erroneously detected as foreign matters.

  The sensor determination means determines a target sensor that is the first sensor at the position in the height direction that can face the pedestal or the article among the plurality of first sensors, and the sensor selection means Of the plurality of first sensors, all of the first sensors having a position in the height direction larger than the target sensor determined by the sensor determination unit may be selected as the foreign matter sensor. In this case, among the plurality of first sensors, the one located at a position higher than the pedestal and the article is used for foreign object detection. Therefore, the packaging device can detect the foreign matter entering the housing while preventing the pedestal and the article from being erroneously detected as foreign matters.

  Along the second position between the movement path and the outside of the housing, the second transfer path is arranged in parallel with the height direction, and faces each other at different height positions. A plurality of second sensors capable of detecting a moving object, wherein the first position is on the downstream side with respect to the movement path, and the second position is on the upstream side with respect to the movement path, The sensor determining means determines which of the plurality of first sensors is at a position in the height direction that can face the pedestal or the article based on detection results of the plurality of second sensors. Also good. In this case, it is determined which of the plurality of first sensors can face the pedestal and the article based on the detection results of the plurality of second sensors on the upstream side in the transport direction with respect to the movement path. Therefore, the packaging device can identify the plurality of first sensors that do not face the pedestal and the article before the pedestal and the article are conveyed to a position facing the plurality of first sensors.

  Position specifying means for specifying the position of the pedestal being transported by the transport mechanism is provided, and the sensor selecting means is configured such that the position of the pedestal specified by the position specifying means is located upstream from the second position. In the case of being away from each other, all of the plurality of second sensors may be selected as the foreign matter sensor. In this case, since the pedestal and the article do not face all of the plurality of second sensors while the pedestal and the article are away from the second position on the upstream side in the transport direction, all of the plurality of second sensors are not contaminated. Used for detection. Therefore, the packaging device can detect foreign matter entering the housing on both sides in the transport direction with respect to the movement path inside the housing.

  A housing having at least a part of the transport path and an internal space in which the guiding unit is disposed, and a detection unit provided along a predetermined position on the transport path and capable of detecting an object at the predetermined position; The predetermined position is on the upstream side with respect to the movement path, and the detection means is arranged substantially parallel to the height direction of the article conveyed by the conveyance mechanism, and is different from each other. It includes a plurality of sensors capable of detecting an object facing at a position in the height direction, and each of the plurality of sensors is opposed to the height direction and a width direction orthogonal to the transport direction across the transport path. A light receiving portion that receives light and outputs a signal corresponding to the amount of light received, and a light emitting portion that emits light toward the light receiving portion, wherein the width direction is a third direction different from each other and Including a fourth direction, the plurality of Among the sensors, in the first sensor and the second sensor, which are any two of the sensors adjacent to each other in the height direction, the light emitting unit of the first sensor and the light receiving unit of the second sensor The light receiving unit of the first sensor and the light emitting unit of the second sensor are arranged side by side in the height direction on the third direction side of the transport path. They may be provided side by side in the vertical direction.

  In this case, the pedestal and the article before packaging are transported from the outside of the housing to the internal space of the housing via a predetermined position on the transport path. In the internal space of the housing, the pedestal and the article are packaged with a film. The detection means capable of detecting an object at a predetermined position includes a plurality of sensors capable of detecting objects facing each other at positions in different height directions. Each of the plurality of sensors includes a light receiving unit and a light emitting unit that are disposed to face each other across the conveyance path in the width direction. In the first sensor and the second sensor adjacent to each other in the height direction among the plurality of sensors, the light emitting unit of the first sensor and the light receiving unit of the second sensor are arranged in the height direction on one side in the width direction of the transport path. Is provided. The light receiving unit of the first sensor and the light emitting unit of the second sensor are provided side by side in the height direction on the other side in the width direction of the transport path. Therefore, the packaging device can accurately detect the height of the base and the article.

  The housing includes an opening for allowing the pedestal conveyed by the conveyance mechanism and the article to enter the internal space, and the plurality of sensors include the light receiving unit and the light emission along a lower end of the opening. You may include the said sensor by which the part is arrange | positioned. In this case, the packaging device can accurately detect the foreign matter even when the small foreign matter enters along the lower end of the opening.

  The light emission control unit includes a light emission control unit configured to emit light from the plurality of light emitting units included in the detection unit, and the light emission control unit has at least different timings for the light emitting unit of the first sensor and the light emitting unit of the second sensor. You may make it light-emit. In this case, it can suppress that the light-receiving part of a some sensor detects the light emitted from the light-emitting part different from the light-emitting part to which each respond | corresponds accidentally.

  The light emission control unit may cause the plurality of light emitting units to emit light sequentially in a predetermined order. In this case, the processing burden related to the light emission control of the plurality of light emitting units can be reduced.

It is a perspective view of packaging device 1 (state where case 800 was equipped) in a first embodiment. It is a perspective view of packaging device 1 (state which removed case 800) in a first embodiment. It is a perspective view of the conveyance mechanism 50 in 1st embodiment. 4 is a perspective view of the vicinity of the upper end of the side plate portion 11. FIG. It is a perspective view of the film roll 22 and the rotation mechanism 65. It is a perspective view of the film roll 22 and the rotation mechanism 65. FIG. 6 is a right side view of the rotation mechanism 65. 3 is a perspective view of a movable roller 30. FIG. It is a right view in the state where support part 34 was arranged on the top in the first embodiment. It is a right view of the state in which the support part 34 was arrange | positioned in the lowest position in 1st embodiment. 4 is a perspective view of a base guide roller 71, a holding roller 72, and a heating unit 86. 4 is a perspective view of the movable roller 30, a heating unit 86, and a rotation suppressing unit 80. FIG. It is a perspective view of the base 2 in 1st embodiment. FIG. 6 is a perspective view of a pedestal 2 attached to a first transport unit 61 and a second transport unit 62. It is a block diagram which shows the electric constitution of the packaging apparatus 1 in 1st embodiment. It is a figure which shows the parameter table 2021. It is a flowchart of the packaging process in 1st embodiment. FIG. 18 is a flowchart of the packaging process in the first embodiment, which is a continuation of FIG. 17. It is a flowchart of the monitoring process in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a figure which shows the packaging process by packaging processing in 1st embodiment. It is a flowchart of the monitoring process in the modification of 1st embodiment. It is a flowchart of the packaging process in the modification of 1st embodiment. It is a perspective view of the packaging apparatus 1 (state which mounted | wore with the housing | casing 800) in 2nd embodiment. It is a perspective view of the packaging apparatus 1 (state which removed the housing | casing 800) in 2nd embodiment. It is a perspective view of the conveyance mechanism 50 in 2nd embodiment. It is a right view of the state in which the support part 34 was arrange | positioned in the highest rank in 2nd embodiment. It is a right view of the state in which the support part 34 was arrange | positioned in the lowest position in 2nd embodiment. It is a flowchart of the packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is a figure which shows the packaging process by a packaging process in 2nd embodiment. It is the schematic diagram which looked at the entrance line sensor 44 from the upstream. FIG. 10 is another schematic view of the inlet line sensor 44 viewed from the upstream side in a state where the pedestal 2 is placed on the cradle 12. It is a flowchart of the monitoring process in 2nd embodiment. It is the other schematic diagram which looked at the entrance line sensor 44 in the state by which the base 2 which concerns on the modification of 2nd embodiment is mounted in the receiving stand 12.

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

<1-1. Case 800>
As shown in FIG. 1, the packaging device 1 includes a housing 800. The shape of the housing 800 is a substantially rectangular parallelepiped whose longitudinal direction is the vertical direction. The housing 800 includes an upper housing 801 and a lower housing 803. The shape of the lower housing 803 is a substantially rectangular parallelepiped with the left-right direction as the longitudinal direction. An input unit 206 and an LED 207 are provided on the right side of the upstream surface of the lower housing 803. The input unit 206 is an input button that allows the user to perform an input operation on the packaging device 1. The upper housing 801 includes two standing portions 802A and a erection portion 802B. The two standing portions 802A extend upward from the left and right ends of the lower housing 803, respectively. The erection part 802B is erected between the upper ends of the two erection parts 802A. Each of the two standing portions 802A covers the side plate portion 11 (see FIG. 2, described later) from the outside in the left-right direction. The erection part 802B covers the film cassette 21 (see FIG. 2, 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.

<1-2. Cradle 12, 13>
The cradle 12 extends in the horizontal direction from the upper end of the upstream side surface of the lower housing 803 toward the upstream side. The cradle 13 extends in the horizontal direction from the upper end of the downstream side surface of the lower housing 803 toward the downstream side. The shapes of the cradles 12 and 13 are box-like shapes that are substantially rectangular in plan view with the conveying direction as the longitudinal direction. The leg 121 supports the cradle 12 from below, and the leg 131 supports the cradle 13 from below. The cradle 12 receives the pedestal 2 conveyed toward the opening 805 on the upper surface. The cradle 13 receives the pedestal 2 and the article 3 whose packaging has been 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. Each of the receiving surfaces 12A and 13A is horizontal. The receiving surfaces 12A and 13A form the same plane. Accordingly, the receiving surfaces 12A and 13A can smoothly transport the pedestal 2. 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. 9 and the like).

  As shown in FIG. 2, the packaging device 1 includes a bottom portion 10 and side plate portions 111 and 112. The shape of the bottom 10 is a rectangular shape in plan view. The side plate portion 111 extends in the upward vertical direction from the right end portion of the bottom portion 10. The side plate portion 112 extends in the upward vertical direction from the left end portion of the bottom portion 10. Hereinafter, the side plate portions 111 and 112 are collectively referred to as the side plate portion 11. The shape of the side plate portion 11 is a substantially rectangular plate shape whose longitudinal direction is the vertical direction. The inner surfaces of the side plate portions 111 and 112 face each other. The cradle 12 is supported by the end portion on the upstream side of the side plate portion 11. The cradle 13 is supported by the end portion on the downstream side of the side plate portion 11.

<1-3. Transport mechanism 50, transport unit 60>
As shown in FIG. 3, endless belts 511 and 512 are provided at the right end and the left end of the cradles 12 and 13, respectively. Hereinafter, the belts 511 and 512 are also collectively referred to as a belt 51. The belt 51 has teeth on the inner surface. As shown in FIG. 2, 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 arranged 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.

  The belt 511 is installed between the main driving pulley 52A and the plurality of driven pulleys 52B. The main driving pulley 52 </ b> A is disposed at the approximate center in the conveyance direction on the left side surface of the side plate portion 111. The main pulley 52A has teeth on the outer surface. The plurality of driven pulleys 52 </ b> B are rotatably provided on the upstream side of the right side surface of the cradle 12 and on the downstream side of the right side surface of the cradle 13. The main pulley 52A and the plurality of driven pulleys 52B are in contact with the inside of the belt 511, and support the belt 511 in a rotatable manner. The teeth on the outer surface of the main pulley 52 </ b> A engage with the teeth on the inner surface of the belt 511. The belt 512 is installed between the main driving pulley 53A and the plurality of driven pulleys 53B. The main driving pulley 53 </ b> A is disposed at the approximate center in the conveyance direction on the right side surface of the side plate portion 112. The main pulley 53A has teeth on the outer surface. The plurality of driven pulleys 53 </ b> B are rotatably provided on the upstream side of the left side surface of the cradle 12 and on the downstream side of the left side surface of the cradle 13. The main pulley 53A and the plurality of driven pulleys 53B are in contact with the inside of the belt 512, and support the belt 512 rotatably. The teeth on the outer surface of the main pulley 53A engage with the teeth on the inner surface of the belt 512. The main pulleys 52A and 53A are connected by a shaft 59 extending in the left-right direction.

  A motor 222 is provided below the upstream portion of the cradle 13. The rotation shaft of the motor 222 is connected to the rotation shaft of the main driving pulley 52A via a transmission portion 57 constituted by a plurality of spur gears. The transmission unit 57 transmits the rotational driving force of the motor 222 to the main pulleys 52A and 53A. The belt 51 is rotated by a motor 222. When the belt 51 rotates counterclockwise as viewed from the right side, the transport unit 60 provided on the outer surface of the belt 51 can transport the pedestal 2 from the upstream side to the downstream side. Hereinafter, the belt 51, the conveyance unit 60, the motor 222, and the transmission unit 57 are collectively referred to as a conveyance mechanism 50.

  The conveyance unit 60 is provided on the outer side surface of each of the belts 511 and 512. The conveyance unit 60 conveys the pedestal 2 from the upstream side to the downstream side by moving from the cradle 12 to the cradle 13 as the belt 51 rotates. The transport unit 60 includes a first transport unit 61 and a second transport unit 62. The first transport unit 61 and the second transport unit 62 are separated in the direction in which the belt 51 extends, that is, in the transport direction. The first transport unit 61 and the second transport unit 62 protrude perpendicularly and outwardly with respect to the outer surface of the belt 51. As for the 1st conveyance part 61, the part which adjoins the belt 51 among the side surfaces of an upstream is dented downstream.

<1-4. Sensor 204, Sensor 205>
As shown in FIG. 2, the sensor 204 is provided at the upstream end of the side plate portion 112. The sensor 204 is a line sensor including a plurality of detection units arranged in the vertical direction. Each of the plurality of detection units includes a light emitting unit and a light receiving unit. The light emitting unit emits light in the right horizontal direction. The light receiving unit receives the reflected light when the light emitted from the light emitting unit is applied to the object and reflected. Each of the plurality of detection units outputs a signal when the reflected light is received. The sensor 204 can detect an object passing through the opening 805 (see FIG. 1) over a vertical range from the conveyance path 103 to the vicinity of the lower end of the erection unit 802B (see FIG. 1).

  The sensor 205 (see FIG. 15) is provided inside the side plate portion 111. The sensor 205 is a non-contact position sensor that can detect a reflector provided on the outer surface of the belt 51. The sensor 205 is disposed below the belt 51 and emits light upward. The sensor 205 can detect the reflecting plate by detecting the reflected light from the reflecting plate. In addition, when the sensor 205 detects a reflecting plate, the conveyance part 60 provided in the belt 51 will be in the state protruded upwards from the receiving surface 12A of the receiving stand 12 (state of FIG. 3).

<1-5. Film cassette 21, rotation mechanism 65>
As shown in FIG. 4, a plate-like installation plate 117 is installed between the upper ends of the side plate units 111 and 112. The erection plate 117 includes a horizontal portion 117A extending horizontally, a vertical portion 117B extending vertically upward from an upstream end of the horizontal portion 117A, and a vertical portion extending vertically upward from a downstream end of the horizontal portion 117A. 117C. The film cassette 21 is mounted on the packaging device 1 by placing the film cassette 21 (see FIG. 2) on the upper side of the horizontal portion 117A. Hereinafter, the state in which the film cassette 21 is mounted on the packaging device 1 is taken as an example, and the direction of the packaging device 1 (upper side, lower side, right side, left side, upstream side, and downstream side) is set as the film cassette 21 and the film roll 22. Also apply to.

  A rotation mechanism 65 is provided on the upper side of the horizontal portion 117 </ b> A and on the left side surface of the side plate portion 111. The rotation mechanism 65 is a mechanism capable of winding the film 24 (see FIG. 5) into the film cassette 21 and feeding the film 24 out of the film cassette 21. The rotation mechanism 65 includes a motor 227 and a transmission mechanism 67. The transmission mechanism 67 of the rotation mechanism 65 is disposed on the right side of the film cassette 21 that is mounted on the packaging device 1. Details of the rotation mechanism 65 will be described later. A wall plate 14 that covers the upstream side, the downstream side, and the left side of the transmission mechanism 67 is provided above the horizontal portion 117A. A recessed portion 14 </ b> A that is recessed downward is provided at the upper end of the portion of the wall plate 14 that covers the left side of the transmission mechanism 67.

  As shown in FIG. 2, the film cassette 21 has a substantially cylindrical shape. The film cassette 21 accommodates therein a film roll 22 (see FIG. 5) in which a film 24 is wound around a core 26 (see FIG. 5). The film cassette 21 includes a discharge port (not shown) extending in the width direction of the film 24 of 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.

  As shown in FIG. 5, a film gear 26 </ b> A protruding rightward is provided at the right end of the core 26 of the film roll 22. The film gear 26 </ b> A extends along the axis of the core 26 of the film roll 22. The film gear 26A protrudes to the right from the right wall of the film cassette 21 (see FIG. 2). When the film cassette 21 is mounted on the packaging device 1, the film gear 26 </ b> A enters the recess 14 </ b> A (see FIG. 4) of the wall plate 14.

The rotation mechanism 65 will be described with reference to FIGS. The rotation mechanism 65 includes a motor 227.
And a transmission mechanism 67. The rotation mechanism 65 rotates the film roll 22 by transmitting the rotational driving force of the motor 227 to the film gear 26 </ b> A via the transmission mechanism 67. The wall plate 14 (see FIG. 4) supports the motor 227 and the transmission mechanism 67.

  The transmission mechanism 67 includes gears 670 to 676. The gears 670 to 676 are spur gears. The gear 670 is fixed to the right end of the rotating shaft that extends horizontally from the motor 227 toward the right. A belt 684 is installed between the gears 670 and 671. The gears 671 and 672 are fixed to a common rotating shaft 681 and can be rotated about the rotating shaft 681. The diameter of the gear 672 is approximately ¼ of the diameter of the gear 671. The gears 673 and 674 are fixed to a common rotation shaft 682 and can be rotated about the rotation shaft 682. The diameter of the gear 674 is approximately ¼ of the diameter of the gear 673. The gears 675 and 676 are fixed to a common rotation shaft 683 and can be rotated about the rotation shaft 683. The diameter of the gear 676 is approximately ¼ of the diameter of the gear 675. The rotating shafts 681 to 683 extend in the left-right direction and are rotatably supported by the wall plate 14 (see FIG. 4). The gears 672 and 673 mesh with each other. The gears 674 and 675 mesh with each other. The gear 676 meshes with the film gear 26 </ b> A of the film roll 22 when the film cassette 21 is mounted. The gears 670 to 676 and 26 </ b> A rotate according to the rotation of the motor 227.

  When feeding the film 24 out of the film cassette 21, the motor 227 rotates counterclockwise (in the direction of the arrow in FIG. 7) when the rotation mechanism 65 is viewed from the right side. On the other hand, when winding the film 24 into the film cassette 21, the motor 227 rotates clockwise when the rotation mechanism 65 is viewed from the right side. Hereinafter, rotating the motor 227 counterclockwise when the rotation mechanism 65 is viewed from the right side is referred to as rotating the motor 227 in the feeding direction, and the film 24 when the motor 227 is rotated in the feeding direction. The moving direction is referred to as the first direction. The direction in which the motor 227 is rotated clockwise when the rotation mechanism 65 is viewed from the right side is referred to as rotating the motor 227 in the winding direction. Film when the motor 227 rotates in the winding direction The 24 moving directions are referred to as second directions. A driving unit 217 (see FIG. 15) that drives the motor 227 can switch the rotation direction of the motor 227 by inverting the polarity of the pulse signal output to the motor 227.

<1-6. Movable roller 30>
As shown in FIG. 2, 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 motor 221 (see FIG. 15) is provided inside the protrusions 113 and 114. The carriage inside the protruding portion 113 is connected to the support plate portion 351 at the upstream portion of the protruding portion 113. The shape of the support plate portion 351 is a plate shape. The support portion 341 is connected to the left side of the support plate portion 351. The carriage inside the protruding portion 114 is connected to the support plate portion 352 at a portion on the upstream side of the protruding portion 114. The shape of the support plate portion 352 is a plate shape. The support part 342 is connected to the right side of the support plate part 352. Hereinafter, the support portions 341 and 342 are collectively referred to as the support portion 34. The support part 34 supports the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 (see FIG. 8). Hereinafter, the guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 are collectively referred to as the movable roller 30. The motor 221 can move the support part 34 connected to each of the support plate parts 351 and 352 in the vertical direction via the carriage.

As shown in FIG. 8, the shape of the movable roller 30 is a cylindrical shape. The movable roller 30 extends in the left-right direction. The length in the left-right direction of the movable roller 30 is substantially the same as the length in the left-right direction of the cradle 12, 13 (see FIG. 2). The support portions 341 and 342 support the right end and the left end of the movable roller 30, respectively. The movable roller 30 is rotatable with respect 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 an intersecting portion between a portion extending in the transport direction and a portion extending in the up-down direction in each of the support portions 341 and 342. The guide roller 31, the first auxiliary roller 32, and the second auxiliary roller 33 are arranged in order from the downstream side to the upstream side.

  The movable roller 30 moves in the vertical direction as the support portion 34 moves in the vertical direction. FIG. 9 shows a state in which the support portion 34 is disposed at the uppermost position. In this state, a portion extending in the vertical direction of the support portion 34 is disposed in the vicinity of the upstream side of the film cassette 21 (see FIG. 2) that houses the film roll 22. A portion extending in the transport direction of the support portion 34 is disposed below the film cassette 21. The movable roller 30 is disposed below the film cassette 21. FIG. 10 shows a state in which the support portion 34 is disposed at the lowest position. In this state, a portion of the support portion 34 that extends in the transport direction is disposed below the transport path 103. Hereinafter, the path of the guide roller 31 that moves in the vertical direction by the movement of the support portion 34 is referred to as a movement path 104. When the guide roller 31 moves to the lowest position along the movement path 104 (see FIG. 10), 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.

<1-7. Cutting unit 77>
As shown in FIG. 11, a protruding portion 115 protruding rightward is provided on the right side surface of the side plate portion 111 (see FIG. 2). A protruding portion 116 protruding leftward is provided on the left side surface of the side plate portion 112 (see FIG. 2). A guide rail 74 extends between the protrusions 115 and 116. A cutting portion 77 is provided on the guide rail 74. The cutting portion 77 includes a blade portion 771 that protrudes upward from the upper surface. The blade portion 771 extends in the left-right direction. The cutting part 77 is movable in the left-right direction along the guide rail 74. A carriage (not shown) is disposed on the downstream side of the guide rail 74. The carriage is connected to the cutting part 77. The carriage is driven by a motor 225 (see FIG. 15) provided in the protrusion 115. When the motor 225 is driven, the cutting portion 77 moves in the left-right direction along the guide rail 74. When the cutting part 77 moves in the left-right direction along the guide rail 74, the blade part 771 can cut the film 24 in the width direction. As shown in FIG. 10, 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.

<1-8. Pedestal guide roller 71, holding roller 72, heating unit 86, rotation suppression unit 80>
As shown in FIG. 11, a pedestal guide roller 71 is provided on the upstream side of the portion sandwiched between the side plate portions 111 and 112 (see FIG. 2) and below the conveyance path 103 (see FIGS. 9 and 10). . The pedestal guide roller 71 extends in the left-right direction. The pedestal guide roller 71 contacts the conveyance path 103 from below. The pedestal guide roller 71 supports the pedestal 2 conveyed from the upstream side to the downstream side along the conveyance path 103 from below between the cradles 12 and 13 and guides the pedestal 12 from the cradle 12 to the cradle 13. As shown in FIG. 10, when the support portion 34 is disposed at the lowest position, the second auxiliary roller 33 is disposed near the upper portion of the pedestal guide roller 71.

As shown in FIG. 11, a holding roller 72 is provided on the downstream side of the pedestal guide roller 71. The holding roller 72 extends in the left-right direction. The left and right end portions of the holding roller 72 are rotatably supported by the holding portion 78. The holding part 78 can swing. The holding part 78 is swung by a motor 226 (see FIG. 15). As shown in FIGS. 9 and 10, when the holding portion 78 swings, the holding roller 72 comes close to the downstream side of the pedestal guide roller 71 (see FIG. 9) and is held with respect to the pedestal guide roller 71. The state is switched to a state where the roller 72 is separated downward (see FIG. 10). As shown in FIG. 9, when the holding roller 72 comes close to the downstream side of the pedestal guide roller 71, the holding roller 72 contacts the conveyance path 103 from below. The holding roller 72 can sandwich and support the film 24 discharged from the film cassette 21 (see FIG. 2) between the pedestal guide roller 71 and the downstream side of the pedestal guide roller 71.

  As shown in FIG. 11, a heating unit 86 is provided in the vicinity of the downstream side of the holding roller 72. The heating unit 86 includes three heating units at the upper end. The heating unit includes a heater 871 (see FIG. 12) on the upper surface. The heater 871 can heat the film 24 in contact with the film 24. A motor 223 (see FIG. 15) is provided above the bottom portion 10 (see FIG. 2) and between the side plate portions 111 and 112 (see FIG. 2). As the motor 223 rotates, the heating unit 86 moves in the vertical direction.

  In a state where the heating unit 86 is disposed at the uppermost position by the motor 223 (see FIG. 11), the upper surfaces of the three heating units are close to the transport path 103 (see FIGS. 9 and 10). On the other hand, the upper surface of each of the three heating units is separated from the conveyance path 103 in a state where the heating unit 86 is moved by the motor 223 and is disposed at the lowest position (see FIGS. 9 and 10).

  As shown in FIG. 12, a rotation suppression unit 80 is provided on the downstream side of the heating unit 86. The rotation suppression unit 80 includes a cam 851, two support rods 82, and a stopper 81. The two support bars 82 extend in the transport direction. The stopper 81 is provided at the upstream end of each 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. Rubber is provided on the upstream surface of the stopper 81. The cam 851 is connected to a rotation shaft of a motor 224 (see FIG. 15) provided below the rotation suppressing unit 80. When the cam 851 rotates according to the rotation of the motor 224, the two support rods 82 move in the transport direction. As the two support rods 82 move, the stopper 81 also moves in the transport direction.

  FIG. 12 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 stopper 81 is disposed at a position where it can contact the guide roller 31, and the rubber of the stopper 81 pushes the guide roller 31 upstream. Thereby, the rotation of the guide roller 31 is suppressed. The heating unit 86 projects upward between the first auxiliary roller 32 and the holding roller 72.

<1-9. Base 2>
With reference to FIG. 13, 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. Two opposing sides 901 and 902 of the plate-like portion 90 are orthogonal to the bent portions 911 and 912, and the two opposing sides 903 and 904 are parallel to the bent portions 911 and 912. Hereinafter, a direction in which the bent portions 911 and 912 extend is referred to as a conveyance direction, and a direction in which the sides 901 and 902 extend is referred to as a left-right direction. The side 901 side is referred to as the downstream side, the side 902 side is referred to as the upstream side, the bent portion 911 side is referred to as the left side, and the bent portion 912 side is referred to as the right side. A portion sandwiched between the bent portions 911 and 912 in the plate-like portion 90 is referred to as a first plate-like portion 905. A portion of the plate-like portion 90 that stands up from the bent portion 911 is referred to as a second plate-like portion 906. A portion of the plate-like portion 90 that stands from the bent portion 912 is referred to as a second plate-like portion 907. Holes 927 are formed in the vicinity of the four corners of the first plate-like portion 905. A hole 936 is formed in the center and the lower side of each of the second plate-like portions 906 and 907 in the conveyance direction.

FIG. 14 shows the pedestal 2 in a state of being placed on the cradle 12. A side 901 of the first plate-like portion 905 of the pedestal 2 fits into a portion of the first transport portion 61 that is recessed downstream. Since the first conveyance unit 61 is provided on the belts 511 and 512, the base 2 is fixed to the first conveyance unit 61 at both the left and right side portions. The second transport unit 62 is fitted in the hole 927. The downstream end of the hole 927 is in contact with the downstream end of the second transport unit 62. The first transport unit 61 can transport the pedestal 2 in both the direction toward the downstream side in the transport direction and the direction toward the upstream side.

<1-10. 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 flash ROM 202, a RAM 203, sensors 204 and 205, an input unit 206, an LED 207, and a heater 871. The CPU 201 controls the entire packaging device 1. The CPU 201 executes a program stored in the flash ROM 202 to execute a process of packaging the article 3 placed on the pedestal 2 with the film 24. The flash ROM 202 stores programs for packaging processing (see FIGS. 17 and 18) and monitoring processing (see FIG. 19) executed by the CPU 201. The flash ROM 202 stores a parameter table 2021 (see FIG. 16) described later. The flash ROM 202 stores the total number of rotations of the motor 227 in the feeding direction (hereinafter referred to as the total number of feeding rotations) and the total number of rotations in the winding direction (hereinafter referred to as the total number of winding rotations). The flash ROM 202 stores the vertical lengths (hereinafter referred to as pedestal heights) of the second plate-like portions 906 and 907 of the pedestal 2. The packaging device 1 includes drive units 211 to 217, motors 221 to 227, and encoders 231, 232, and 237. The drive units 211 to 217 drive the motors 221 to 227 by outputting pulse signals to the motors 221 to 227, respectively. The motors 221 to 227 are DC motors. The encoders 231, 232, and 237 output a number of pulse signals corresponding to the rotation of the motors 221, 222, and 227, respectively. The CPU 201 is electrically connected to the flash ROM 202, RAM 203, sensors 204 and 205, input unit 206, LED 207, heater 871, driving units 211 to 217, and encoders 231, 232, and 237. The drive units 211 to 217 are electrically connected to the motors 221 to 227, respectively.

<1-11. Parameter table 2021>
The parameter table 2021 will be described with reference to FIG. In the parameter table 2021, the length of the article 3 in the state of being placed on the pedestal 2 on the cradle 12 (hereinafter referred to as “the height of the article 3”) and the length in the transport direction (hereinafter referred to as “the height of the article 3”). "The length of the article 3"), the feeding speed, feeding time, winding speed, and winding time of the film 24 are associated with each other. When the heights of the articles 3 are the same, the same feeding speed and the same winding speed are associated even if the lengths of the articles 3 are different. A value obtained by multiplying the feeding speed and the feeding time is also referred to as a moving amount in the first direction of the film 24 (hereinafter referred to as “feeding amount”) that can cover the article 3 having a corresponding size (height and length). ). The CPU 201 can specify the feeding amount of the film 24 based on the parameter table 2021. The value obtained by multiplying the winding speed and the winding time is the amount of movement of the film 24 in the second direction (hereinafter referred to as “the length and length”) required to make the film 24 adhere to the article 3 of the corresponding size (height and length). Also referred to as “winding amount”). The CPU 201 can specify the winding amount of the film 24 based on the parameter table 2021.

  In the parameter table 2021, as the height of the article 3 is larger, a relatively higher feeding speed is associated with it. In this case, the feeding amount of the film 24 increases as the height of the article 3 increases. Therefore, the CPU 201 can feed out the film 24 having a feeding amount sufficient to wrap the article 3 having a large height from the film roll 22 by specifying the feeding speed based on the parameter table 2021.

  In the parameter table 2021, as the length of the article 3 is larger, a relatively longer feeding time is associated. In this case, the feeding amount of the film 24 increases as the length of the article 3 increases. Therefore, the CPU 201 can feed out the film 24 having a feeding amount sufficient to wrap the article 3 having a long length from the film roll 22 by specifying the feeding time based on the parameter table 2021.

<1-12. Packaging processing, monitoring processing>
A packaging process (see FIG. 17) and a monitoring process (see FIG. 19) executed by the CPU 201 of the packaging apparatus 1 will be described with reference to FIGS. When the packaging apparatus 1 is powered on, the CPU 201 starts the packaging process by reading and executing the program stored in the flash ROM 202. The monitoring process is started by the process of S3 of the packaging process. 17 to 27 show sectional views taken along the line AA in FIG.

  The packaging process will be described with reference to FIG. CPU201 initializes the state of packaging device 1 (S1). Specifically, it is as follows. The CPU 201 drives the motor 221 by controlling the drive unit 211 to raise the support unit 34 and arrange it at the uppermost position. Accordingly, the movable roller 30 supported by the support portion 34 is disposed at the uppermost position (see FIG. 20). The CPU 201 drives the motor 222 by controlling the drive unit 212 to rotate the belt 51 (see FIG. 20) of the transport mechanism 50. When the sensor 205 (see FIG. 15) detects the reflecting plate, the CPU 201 controls the driving unit 212 to stop driving the motor 222. As a result, the conveying unit 60 protrudes upward from the receiving surface 12A (see FIG. 3) of the cradle 12 (see FIG. 20). The packaging device 1 is in a state in which the user can set the pedestal 2 on the receiving surface 12A of the cradle 12. The CPU 201 controls the driving unit 213 to drive the motor 223, and lowers the heating unit 86 to place it at the lowest position. Thus, the heater 871 on the upper surface of the heating unit 86 is separated from the transport path 103 (see FIG. 20). The CPU 201 controls the drive unit 214 to drive the motor 224 and move the stopper 81 downstream (see FIG. 20). The CPU 201 controls the driving unit 215 to drive the motor 225 and move the cutting unit 77 to the left side. The CPU 201 controls the driving unit 216 to drive the motor 226 to swing the holding unit 78. The holding roller 72 is in a state of being separated downward from the pedestal guide roller 71 (see FIG. 10).

  When the user attaches an unused film cassette 21 and turns on the power of the packaging apparatus 1, an input operation for notifying the packaging apparatus 1 that the unused film cassette 21 is installed is performed via the input unit 206. And execute. When the CPU 201 detects an input operation notifying that an unused film cassette 21 is loaded, the CPU 201 sets 0 to the total number of feeding rotations and the total number of winding rotations stored in the flash ROM 202 by the initialization process (S1). To do. On the other hand, when the CPU 201 does not detect an input operation for notifying that an unused film cassette 21 is loaded, the CPU 201 does not set 0 to the total number of feeding rotations and the total number of winding rotations.

  The CPU 201 starts a monitoring process (see FIG. 19) (S3). The monitoring process will be described with reference to FIG. The CPU 201 performs initialization processing of the feeding rotational speed, the feeding rotational time, the winding rotational speed, and the winding rotational time that are variables stored in the RAM 203 (S81). The initial values of the feeding rotation speed, the feeding rotation time, the winding rotation speed, and the winding rotation time are a feeding initial speed, a feeding initial time, a winding initial speed, and a winding initial time, respectively. Although details will be described later, the CPU 201 rotates the motor 227 based on the feeding rotation speed, the feeding rotation time, the winding rotation speed, and the winding rotation time stored in the RAM 203. For this reason, even when the CPU 201 cannot specify the feeding speed and the feeding time based on the parameter table 2021 in the state before the height and length of the article 3 are specified, the CPU 201 is based on the feeding initial speed and the feeding initial time. Then, the motor 227 can be rotated to feed the film 24 from the film roll 22.

The CPU 201 determines whether there is an object on the right side of the sensor 204 based on signals output from each of the plurality of detection units of the sensor 204 (S83). When the CPU 201 determines that there is an object on the right side of the sensor 204 (S83: YES), the CPU 201 turns on the red LED 207 to notify the user that the packaging process is prohibited (S87). The CPU 201 returns the process to S83. When the CPU 201 determines that there is no object on the right side of the sensor 204 (S83: NO), the CPU 201 turns on the green LED 207 to notify the user that the packaging process is permitted (S85). The CPU 201 advances the process to S89.

  As described above, when the CPU 201 determines that there is an object on the right side of the sensor 204 before starting the packaging process, the CPU 201 notifies the user by turning on the red LED 207. As a result, the packaging apparatus 1 notifies the user that a foreign object has entered the opening 805. If the CPU 201 determines that there is an object on the right side of the sensor 204 before the start of the packaging process, the CPU 201 prohibits the execution of the packaging process. As a result, the packaging device 1 suppresses the foreign matter that has entered the opening 805 from being incorrectly packaged.

  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 206 (S89). When the packaging start instruction has not been input (S89: NO), the CPU 201 returns the process to S83. The CPU 201 continues to wait for input of a start instruction while determining whether there is an object. Similarly, the CPU 201 determines whether or not a packaging start instruction is input in the packaging process of FIG. 17 (S5). CPU201 returns a process to S5, when the packaging start instruction | indication is not input (S5: NO).

  After turning on the power of the packaging device 1, the user manually pulls out the film 24 discharged from the discharge port of the film cassette 21 attached to the packaging device 1 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 is arranged on the downstream side of the pedestal guide roller 71 (see FIG. 20). When the film roll 22 rotates in response to the film 24 being pulled out from the film cassette 21, the motor 227 rotates in the feeding direction. The CPU 201 updates the total number of feed rotations stored in the flash ROM 202 in accordance with the pulse signal output from the encoder 237 when the motor 227 rotates.

  The user performs an input operation for notifying the packaging device 1 that the film 24 is ready via the input unit 206. The CPU 201 controls the driving unit 216 to drive the motor 226 to swing the holding unit 78. As the holding portion 78 swings, the holding roller 72 comes close to the downstream side of the pedestal guide roller 71 (see FIG. 20). The leading end of the film 24 discharged from the film cassette 21 is sandwiched from both sides in the transport direction by the pedestal guide roller 71 and the holding roller 72. The film 24 and the transport path 103 intersect in the vicinity of the front end of the film 24. The film 24 is in a state of extending straight in the vertical direction between the upstream side of the second auxiliary roller 33 and the portion sandwiched between the pedestal guide roller 71 and the holding roller 72.

  The user places the base 2 on the cradle 12 (see FIG. 20). The pedestal 2 is positioned by the transport unit 60. The side 901 of the first plate-like portion 905 of the base 2 is disposed on the downstream side, and the side 902 is disposed on the upstream side. The article 3 is placed on the first plate-like portion 905 of the base 2 (see FIG. 20). Hereinafter, the case where the length of the article 3 in the vertical direction is larger than the length of the second plate-like portions 906 and 907 of the base 2 in the vertical direction will be specifically described as an example.

The user inputs a packaging start instruction via the input unit 206. As illustrated in FIG. 17, when a packaging start instruction is input (S5: YES), the CPU 201 controls the driving unit 212 to drive the motor 222. The CPU 201 controls the driving unit 212 to rotate the motor 222 so that the belt 51 rotates in the direction in which the base 2 is conveyed from the upstream side to the downstream side. The belt 51 rotates in a direction (in the direction of the arrow 141 in FIG. 20) in which the conveyance unit 60 protruding upward from the receiving surface 12A of the cradle 12 moves from the upstream side to the downstream side. The transport unit 60 transports the pedestal 2 from the upstream side to the downstream side along the transport path 103 at a predetermined speed (hereinafter referred to as a transport speed) (S7). Hereinafter, the rotation direction of the motor 222 and the belt 51 when the pedestal 2 is conveyed from the upstream side to the downstream side is referred to as a forward direction, and the rotation direction opposite to the forward direction is referred to as a reverse direction.

  The downstream side of the base 2 and the article 3 passes the right side of the sensor 204 and gradually approaches the film 24. Each of the plurality of detection units of the sensor 204 outputs a signal in response to the pedestal 2 and the article 3 passing through the right side.

  As illustrated in FIG. 19, when a packaging start instruction is input (S <b> 89: YES), the CPU 201 detects a signal output from each of the plurality of detection units of the sensor 204. The CPU 201 refers to the pedestal height stored in the flash ROM 202. The CPU 201 determines whether or not the article 3 having a height higher than the second plate-like portions 906 and 907 (see FIG. 13) of the pedestal 2 has passed through the right side of the sensor 204, and is arranged above the pedestal height. Judgment is made according to whether or not a signal has been detected from any of the detection units (S91). When the CPU 201 determines that the article 3 having a height higher than that of the second plate-like portions 906 and 907 has passed the right side of the sensor 204 (S91: YES), the CPU 201 is based on the positions of the plurality of detection portions that output the signals. The provisional value of the height of the article 3 is specified (S93). The CPU 201 starts counting pulse signals output from the encoder 232. The CPU 201 continuously counts the pulse signal output from the encoder 232 while detecting a signal from any of the plurality of detection units arranged above the pedestal height.

  The CPU 201 controls the driving unit 212 to continuously drive the motor 222 to continuously rotate the belt 51 in the forward direction. As the pedestal 2 is continuously conveyed downstream, the downstream end (side 901) of the first plate-shaped portion 905 contacts the film 24 and then passes over the holding roller 72 ( Arrow 142 in FIG. The side 901 of the first plate-like portion 905 of the base 2 pushes the film 24 downstream. The side 901 of the first plate-like portion 905 of the base 2 approaches the moving path 104 from the upstream side and passes above the heating unit 86 (see FIG. 21). The leading end of the film 24 is sandwiched between the pedestal guide roller 71 and the holding roller 72. When the film 24 is pushed downstream by the side 901 of the first plate-like portion 905 of the pedestal 2, the leading end of the film 24 goes around the lower surface of the first plate-like portion 905 of the pedestal 2. The film 24 is fed out from the film roll 22, and the film roll 22 rotates. When the film roll 22 rotates, the motor 227 rotates in the feeding direction, and the film 24 moves in the first direction. The CPU 201 updates the total number of feed rotations stored in the flash ROM 202 in accordance with the pulse signal output from the encoder 237 when the motor 227 rotates.

  As shown in FIG. 17, the CPU 201 starts transporting the pedestal 2 to the downstream side in the process of S <b> 7 and then starts transporting the pedestal 2 in accordance with the pulse signal output from the encoder 232. The number of rotations of the motor 222 is specified. The CPU 201 determines whether or not the side 901 of the first plate-like portion 905 of the pedestal 2 has moved downstream by a predetermined distance with respect to the upper position of the heating portion 86, based on the identified number of rotations of the motor 222. . When the CPU 201 determines that the side 901 of the first plate-like portion 905 of the base 2 has moved a predetermined distance downstream from the upper position of the heating unit 86, the CPU 201 controls the driving unit 212 to drive the motor 222. It stops and the conveyance to the downstream side of the base 2 is stopped (S9). The CPU 201 acquires the payout rotation speed stored in the RAM 203 (S11). The CPU 201 controls the driving unit 217 to rotate the motor 227 in the feeding direction at the obtained feeding rotation speed, and to rotate the film roll 22 (S13). As a result, the film 24 of the film roll 22 moves in the first direction and is forced out of the film cassette 21 to the outside. As shown in FIG. 21, when the film roll 22 rotates in the direction of the arrow 161, the film 24 is loosened. The CPU 201 updates the total number of feed rotations stored in the flash ROM 202 in accordance with the pulse signal output from the encoder 237 when the motor 227 rotates. The CPU 201 acquires the feeding rotation speed stored in the flash ROM 202 until the rotation of the motor 227 in the feeding direction is finished by the process of S33 described later, and rotates the motor 227 in the feeding direction at the feeding rotation speed. Repeat control.

  CPU201 controls actuator 213, drives motor 223, and raises heating part 86 (S15). After the heating unit 86 is placed at the uppermost position, the CPU 201 controls the driving unit 213 to stop driving the motor 223 and stop the heating unit 86 from rising. As shown in FIG. 21, when the heating unit 86 rises to the top (arrow 143), the upper surface 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, in a state where the heating unit 86 is disposed at the uppermost position, the upper surface of the heating unit 86 is in a state where the film 24 is sandwiched between the lower surface of the first plate-like portion 905 of the base 2.

  As shown in FIG. 17, the CPU 201 heats the heater 871 of the heating unit 86 (S17). The heater 871 heats and melts the front end of the film 24. The front end of the melted film 24 is bonded to the vicinity of the side 901 in the lower surface of the first plate-like portion 905 of the base 2 (S17). The CPU 201 stops the heating of the heater 871 after a predetermined time has elapsed after starting the heating of the heater 871 (S19). The predetermined time is a time required for heating the temperature of the film 24 to the melting point by the heater 871. CPU201 controls actuator 213, drives motor 223, and lowers heating part 86 (S21, arrow 144 (refer to Drawing 22)). The upper surface of the heating unit 86 is separated from the conveyance path 103. After the heating unit 86 is disposed at the lowest position, the CPU 201 controls the driving unit 213 to stop driving the motor 223 and stop the lowering of the heating unit 86.

  The CPU 201 controls the drive unit 216 to drive the motor 226 and swings the holding unit 78 (S23). As shown in FIG. 22, when the holding portion 78 swings in the direction of the arrow 145, the holding roller 72 is separated from the pedestal guide roller 71 downward. The pedestal guide roller 71 and the holding roller 72 release the front end of the sandwiched film 24. Note that the leading end of the film 24 is melted by the heater 871 heated by the process of S17 (see FIG. 17) and adhered to the lower surface of the pedestal 2.

  As shown in FIG. 17, the CPU 201 controls the drive unit 212 to drive the motor 222, rotates the belt 51 in the forward direction, and transports the pedestal 2 downstream at a transport speed (S25). 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 (see arrow 146, FIG. 22). 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. Note that the rotation of the motor 227 in the feeding direction is started by the processing of S13, and the film 24 is fed from the film roll 22 (see the arrow 162, FIG. 22). The film 24 is loose. Accordingly, even when the leading end of the film 24 moves downstream as the pedestal 2 moves, no strong tension acts on the film 24. For this reason, the movement of the base 2 to the downstream side is not hindered by the film 24.

By continuously transporting the pedestal 2 to the downstream side, the side 901 of the first plate-like portion 905 of the pedestal 2 moves from the upstream side to the downstream side at the intersection position 105 where the transport path 103 and the movement path 104 intersect. Cross across. The pedestal 2 moves further downstream (arrow 146, FIG. 22). 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 in contact with the film 24 and bent at the contact portion. In addition, since strong tension is not acting on the film 24, the force when the film 24 is pressed against the side 901 of the first plate-like portion 905 of the base 2 and the downstream end of the article 3 is small.

  The CPU 201 controls the driving unit 212 to continuously drive the motor 222 to continuously rotate the belt 51 in the forward direction. The first transport unit 61 moves onto the cradle 13, and the downstream side of the base 2 is transported to the cradle 13. The film 24 is disposed at a position covering the first plate-like portion 905 of the base 2 and the upper side of the article 3. An upstream end (side 902) of the first plate-like portion 905 of the pedestal 2 passes over the pedestal guide roller 71. Further, the pedestal 2 is conveyed downstream (see the arrow 146 and FIG. 22).

  After the article 3 passes the right side of the sensor 204 downstream, the plurality of detection units arranged above the pedestal height among the plurality of detection units of the sensor 204 stop outputting signals. As shown in FIG. 19, the CPU 201 determines that the upstream end of the article 3 passes the right side of the sensor 204 to the downstream side, and the article 3 is not on the right side of the sensor 204 (S91: NO). The CPU 201 stops counting pulse signals output from the encoder 232. The CPU 201 identifies the largest value among the provisional values of the heights of the plurality of articles 3 identified by the process of S93 as the height of the articles 3 (S95). The CPU 201 specifies the length of the article 3 based on the counting result of the pulse signal and the conveyance speed (predetermined speed) of the base 2 and the article 3 (S95).

  The CPU 201 refers to the parameter table 2021 (see FIG. 16). The CPU 201 acquires the feeding speed and the feeding time associated with the height of the article 3 and the length of the article 3 specified by the process of S95 (S97). The CPU 201 acquires the total number of feeding rotations and the total number of winding rotations stored in the flash ROM 202. The CPU 201 calculates the difference by subtracting the total number of winding rotations from the acquired total number of feeding rotations. The difference corresponds to the amount of the film 24 fed out from the film roll 22. The CPU 201 applies a predetermined conversion formula to the calculated difference. The conversion formula is a relational formula that can convert the difference into the remaining amount of the film 24 in the film cassette 21. As a result, the CPU 201 acquires the remaining amount of the film 24 (S99). The CPU 201 calculates the radius of the film roll 22 based on the acquired remaining amount of the film 24. The CPU 201 calculates the rotational speed in the feeding direction of the motor 227 when the film 24 is fed from the film roll 22 at the feeding speed acquired by the process of S97 based on the radius of the film roll 22 (S101). The CPU 201 sets the feeding rotation speed stored in the RAM 203 to the rotation speed calculated by the process of S101 (S102). The CPU 201 sets the feed rotation time stored in the RAM 203 to the feed time acquired from the parameter table 2021 by the process of S97 (S102).

  That is, in the above, when the article 3 is passing the right side of the sensor 204 (S93: NO), the feeding initial speed is set as the feeding rotation speed (S81). In this case, the CPU 201 rotates the motor 227 in the feeding direction at the initial feeding speed. On the other hand, after the article 3 has passed downstream on the right side of the sensor 204 (S91: NO), the rotation speed corresponding to the height and length of the article 3 is set as the feeding rotation speed by the process of S102. . In this case, the CPU 201 rotates the motor 227 in the feeding direction at the set rotation speed, and moves the film 24 in the first direction.

The CPU 201 determines whether there is an object on the right side of the sensor 204 based on signals output from each of the plurality of detection units of the sensor 204 (S103). In addition, since the base 2 and the article 3 have already passed the right side of the sensor 204, the object detected by the sensor 204 at this timing is not the base 2 and the article 3. When the CPU 201 determines that there is an object on the right side of the sensor 204 (S103: YES), the CPU 201 stops the packaging process (see FIG. 17) in operation (S109). The CPU 201 turns on the red LED 207 to notify the user that the packaging process is stopped (S111). The CPU 201 returns the process to S103.

  When the CPU 201 determines that there is no object on the right side of the sensor 204 (S103: NO), the CPU 201 continues the packaging process in operation (see FIG. 17) (S105). The CPU 201 turns on the green LED 207 to notify the user that the packaging process is continuing (S107). CPU201 advances processing to S113.

  CPU201 judges whether the instruction | indication which complete | finishes packaging with the film 24 of the base 2 and the articles | goods 3 was input via the input part 206 (S113). If it is determined that the packaging end instruction has not been input (S113: NO), the CPU 201 returns the process to S103. The CPU 201 continues to wait for input of an end instruction. If the CPU 201 determines that an instruction to end the packaging process has been input (S113: YES), the CPU 201 ends the monitoring process.

  As shown in FIG. 22, the side 902 of the first plate-like portion 905 of the pedestal 2 crosses the intersection position 105 from the upstream side to the downstream side and is arranged on the downstream side. The film 24 extending from the film roll 22 contacts the upstream side of the second auxiliary roller 33 and is guided slightly 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. 17, the CPU 201 specifies the number of rotations of the motor 222 after starting the downstream conveyance of the pedestal 2 in S <b> 25 (see FIG. 7) according to the pulse signal output from the encoder 232. To do. The CPU 201 determines whether or not the side 902 of the first plate-like portion 905 of the pedestal 2 has moved downstream from the intersection position 105 based on the number of rotations of the motor 222. When the CPU 201 determines that the side 902 has moved to the downstream side of the intersection position 105, the CPU 201 controls the driving unit 212 to stop driving the motor 222 and stop the conveyance of the base 2, as shown in FIG. 17. (S27).

  The CPU 201 controls the drive unit 211 to drive the motor 221 to move the support unit 34 downward. The guide roller 31 supported by the support portion 34 starts to move from the uppermost side to the lowermost side along the movement path 104 (S29). The guide roller 31 comes into contact with the film 24 disposed below from above, and guides the film 24 downward along the movement path 104 (see arrow 147, FIG. 23). The film 24 is pressed against the pedestal 2 and the article 3 from the information. The rotation of the motor 227 in the feeding direction is started by the process of S13, and the film 24 is moved in the first direction and fed from the film roll 22 (see arrow 163, FIG. 23). The film 24 is loose. Therefore, even when the film 24 moves downward along the movement path 104 as the guide roller 31 moves, no strong tension acts on the film 24. For this reason, the downward movement of the guide roller 31 is not hindered by the film 24. Further, the force when the film 24 is pressed against the base 2 and the article 3 is small.

In accordance with the pulse signal output from the encoder 231, the CPU 201 specifies the number of rotations of the motor 221 after starting the downward movement of the guide roller 31 in S29. The CPU 201 determines whether the guide roller 31 is disposed at the lowest position based on the specified rotation speed. When the CPU 201 determines that the guide roller 31 has moved to the lowest position, the CPU 201 stops driving the motor 221 and stops the downward movement of the guide roller 31 (S31). As shown in FIG. 23, the guide roller 31 is in a state of being in contact with the conveyance path 103 from the lower side in a state of being disposed at the lowest position. The film 24 covers the first plate-like portion 905 of the base 2 and the downstream side, the upper side, and the upstream side of the article 3.

  When the elapsed time since the start of rotation of the motor 227 in the feeding direction by the processing of S13 coincides with the feeding rotation time stored in the RAM 203, the CPU 201 controls the driving unit 217 to feed the motor 227 in the feeding direction. Is stopped (S33). For this reason, the CPU 201 feeds the motor 227 in the feeding direction by the amount of rotation necessary to move the film 24 by the moving amount indicated by the value obtained by multiplying the feeding speed and the feeding time acquired from the parameter table 2021 in the first direction. Will be rotated.

  The initial value of the feeding rotation speed is the feeding initial speed. Until the size of the article 3 is specified, the motor 227 rotates at the initial feeding speed, and the film 24 moves in the first direction at a moving speed according to the rotation of the motor 227. Therefore, strictly speaking, the movement amount of the film 24 indicated by a value obtained by multiplying the feeding speed and the feeding time acquired from the parameter table 2021 is different from the actual movement amount of the film 24. However, the time during which the motor 227 rotates at the initial feeding speed is short, and the difference between the feeding speed in the parameter table 2021 and the moving speed of the film 24 when the motor 227 rotates at the initial feeding speed is small. For this reason, both are substantially the same.

  In the above description, the CPU 201 may stop the rotation of the motor 227 in the feeding direction by controlling the driving unit 217 immediately after stopping the downward movement of the guide roller 31. In the parameter table 2021, the time from the start of rotation of the motor 227 in the feeding direction by the process of S13 to the end of the downward movement of the guide roller 31 may be set as the feeding time.

  As shown in FIG. 18, the CPU 201 refers to the parameter table 2021 and obtains the winding speed and winding time associated with the height and length of the article 3 specified by the process of S95 (see FIG. 19). (S43). The CPU 201 acquires the remaining amount of the film 24 based on the total number of feeding rotations and the total number of winding rotations stored in the flash ROM 202 (S45). The CPU 201 calculates the radius of the film roll 22 based on the acquired remaining amount of the film 24. The CPU 201 calculates the rotational speed in the winding direction of the motor 227 when the film 24 is wound around the film roll 22 at the winding speed acquired by the process of S43, based on the radius of the film roll 22 (S47). The CPU 201 sets the calculated rotation speed to the winding rotation speed stored in the RAM 203 (S48). The CPU 201 sets the winding time acquired by the process of S43 to the winding rotation time stored in the RAM 203 (S48).

  The CPU 201 controls the drive unit 217 to rotate the motor 227 in the winding direction at the winding rotation speed stored in the RAM 203 (S49). Thereby, the film 24 fed out from the film cassette 21 in accordance with the rotation of the motor 227 in the feeding direction moves in the second direction at the winding speed acquired by the process of S43, and the film roll in the film cassette 21 22 is forcibly wound up (see arrow 164, FIG. 24). The CPU 201 updates the total number of winding rotations stored in the flash ROM 202 according to the pulse signal output from the encoder 237 based on the rotation of the motor 227.

The CPU 201 controls the drive unit 212 to drive the motor 222 and rotate the belt 51 in the reverse direction. The transport unit 60 moves from the downstream side to the upstream side, and transports the base 2 to the upstream side along the transport path 103 at a transport speed (S51). The pedestal 2 is conveyed in the reverse direction (the direction from the downstream side toward the upstream side). As the pedestal 2 moves from the downstream side to the upstream side (arrow 148, see FIG. 24), the side 902 of the first plate-like portion 905 of the pedestal 2 comes into contact with the film 24 and is pushed upstream. The side 902 of the first plate-like portion 905 of the base 2 approaches the intersection position 105 from the downstream side. A side 902 of the first plate-like portion 905 of the base 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 the lower side. The film 24 is sandwiched between the lower surface of the first plate-like portion 905 of the base 2 and the guide roller 31. The film 24 goes around to the lower side of the base 2.

  The film 24 moves in the second direction and is wound on the film roll 22 as the motor 227 rotates in the winding direction. Accordingly, the pedestal 2 is conveyed to the upstream side, and a tension acts on the film 24 when the side 902 of the pedestal 2 pushes the film 24 to the upstream side. Due to the tension acting on the film 24, the film 24 adheres to the base 2 and the article 3.

  In accordance with the pulse signal output from the encoder 232, the CPU 201 specifies the number of rotations of the motor 222 after the conveyance to the upstream side of the base 2 is started in S49. The CPU 201 determines whether 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 based on the specified number of rotations. When the CPU 201 determines that the side 902 of the first plate-like portion 905 of the pedestal 2 has moved a predetermined distance upstream from the upper position of the heating portion 86, the CPU 201 controls the driving portion 212 to stop driving the motor 222. Then, the conveyance of the base 2 is stopped (S53).

  The CPU 201 controls the driving unit 214 to drive the motor 224, and moves the stopper 81 of the rotation suppressing unit 80 to the upstream side (S55). As shown in FIG. 25, 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 of the stopper 81 comes close to the guide roller 31 and sandwiches the film 24 wound around the guide roller 31 between the guide roller 31 and the rubber. When the rubber 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 of the stopper 81.

  When the elapsed time after starting the rotation of the motor 227 by the process of S45 matches the winding rotation time stored in the RAM 203, the CPU 201 controls the driving unit 217 to rotate the motor 227 in the winding direction. Is stopped (S57). The winding of the film 24 onto the film roll 22 in the film cassette 21 is completed. Thereby, the CPU 201 rotates the film 24 by the amount of movement indicated by the value obtained by multiplying the winding speed and winding time set based on the parameter table 2021 by the amount of rotation necessary to move in the second direction. That is, the motor 227 is rotated in the winding direction.

  The CPU 201 controls the drive unit 215 to drive the motor 225, and moves the cutting unit 77 from the left side to the right side along the guide rail 74 (see FIG. 11) (S59). When the cutting portion 77 moves to the right side, the film 24 is cut by the blade portion 771 on the film roll 22 side from the portion sandwiched between the guide roller 31 and the rubber of the stopper 81. The cutting part 77 cuts off the part of the film 24 that covers the first plate-like part 905 and the article 3 of the base 2 from the film roll 22 side. 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. The CPU 201 controls the drive unit 216 to drive the motor 226 and swings the holding unit 78 (S61). As shown in FIG. 26, the holding portion 78 swings in the direction of the arrow 150. The holding roller 72 is disposed in the vicinity of the pedestal guide roller 71 on the downstream side. An end portion of the film 24 cut by the cutting portion 77 is sandwiched between the pedestal guide roller 71 and the holding roller 72.

  As shown in FIG. 18, the CPU 201 controls the drive unit 213 to drive the motor 223 and raise the heating unit 86 (S63). After the heating unit 86 is placed at the uppermost position, the CPU 201 controls the driving unit 213 to stop driving the motor 223 and stop the heating unit 86 from rising. As shown in FIG. 26, the upper surface of the heating unit 86 is close to the transport path 103 from below with the heating unit 86 raised to the top (arrow 151). Note that the side 902 of the first plate-like portion 905 of the pedestal 2 is moved upstream by a predetermined distance from the upper position of the heating portion 86. In the vicinity of the side 902 of 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 disposed at the uppermost position, the upper surface of the heating unit 86 is in a state where the film 24 is sandwiched between the pedestal 2 and the upper surface.

  As shown in FIG. 18, the CPU 201 heats the heater 871 of the heating unit 86 (S65). 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 adhered to the vicinity of the side 902 of the first plate-like portion 905 of the base 2 (S65). 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 S65 (S67). CPU201 controls actuator 213, drives motor 223, and lowers heating part 86 (S69, arrow 152 (refer to Drawing 27)). The upper surface 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 rotation of the motor 223.

  As shown in FIG. 18, the CPU 201 controls the driving unit 214 to drive the motor 224 to move the stopper 81 of the rotation suppressing unit 80 to the downstream side (S71, arrow 153 (see FIG. 27)). The stopper 81 moves downstream, and the rubber provided on the stopper 81 is separated from the guide roller 31. The guide roller 31 is in a rotatable state. The CPU 201 controls the driving unit 212 to drive the motor 222, rotates the belt 51 in the forward direction, and conveys the base 2 to the downstream side (S73). The pedestal 2 and the article 3 that have been packaged are conveyed downstream. In accordance with the pulse signal output from the encoder 232, the CPU 201 specifies the number of rotations of the motor 222 after the conveyance to the downstream side of the pedestal 2 is started in S73. The CPU 201 determines whether or not the first transport unit 61 has moved downstream and has reached the downstream end of the cradle 13 based on the identified rotational speed. When the CPU 201 determines that the first transport unit 61 has moved downstream and has reached the downstream end of the cradle 13, the CPU 201 controls the drive unit 212 to stop driving the motor 222, and The conveyance is stopped (S75). The packaging process ends.

<1-13. Illustrative effects of first embodiment>
(1) The CPU 201 of the packaging device 1 can forcibly unwind the film 24 in an amount necessary for packaging the base 2 and the article 3 from the film roll 22 (S13). Accordingly, the tension acting on the film 24 when the film 24 is pressed against the base 2 and the article 3 is weakened. Therefore, since the CPU 201 can weaken the force when the film 24 is pressed against the pedestal 2 and the article 3 being conveyed, the pedestal 2 and the article 3 can be prevented from being deformed by the film 24. Further, the CPU 201 sets the period for forcibly feeding the film 24 from the film roll 22 until the process (S51) before transporting the base 2 to the upstream side. The CPU 201 conveys the pedestal 2 to the upstream side, thereby applying tension to the film 24 and bringing the film 24 into close contact with the pedestal 2 and the article 3. On the other hand, the CPU 201 does not feed out the film 24 from the film roll 22 when the film 24 is brought into close contact with the base 2 and the article 3. Therefore, the CPU 201 can bring the film 24 into close contact with the pedestal 2 and the article 3 without deforming the pedestal 2 and the article 3.

(2) The CPU 201 starts rotating the motor 227 in the feeding direction and feeds the film 24 from the film roll 22 at a timing before the film 24 is bonded to the base 2 by the process of S17 (S13). Accordingly, the CPU 201 can appropriately weaken the tension of the film 24 in a state before a part of the film 24 is bonded to the base 2. Therefore, the CPU 201 can prevent the film 24 from being detached from the pedestal guide roller 71 and the holding roller 72 when the pedestal 2 and the article 3 are conveyed downstream and a downstream force is applied to the film 24.

(3) The CPU 201 specifies the height and length of the article 3 as the size of the article 3 (S95). When the size of the article is relatively large, the amount of the film 24 necessary for packaging the base 2 and the article 3 also increases. Therefore, it is preferable that the amount of the film 24 fed out from the film roll 22 is also large. On the other hand, when the film 24 is unnecessarily unwound from the film roll 22, the extra film 24 may interfere with packaging. On the other hand, the CPU 201 can change the amount of the film 24 fed out from the film roll 22 according to the size of the specified article 3. As a result, the CPU 201 can appropriately feed out the film 24 necessary for wrapping the article 3 from the film roll 22.

(4) The CPU 201 specifies the height and length of the article 3 detected via the sensor 204 as the size of the article 3 and adjusts the feeding amount of the film 24 fed from the film roll 22. The CPU 201 can easily detect the size of the article by a simple method by specifying the height and length of the article 3 as the size of the article 3. Further, the CPU 201 can easily acquire the feeding speed and feeding time of the film 24 according to the size of the article 3 by applying the specified height and length of the article 3 to the parameter table 2021.

(5) Depending on the amount of film wound around the film roll 22, the rotational speed of the motor 227 required to feed the film 24 from the film roll 22 at a desired feeding speed differs. This is because the length from the rotation axis of the film roll 22, that is, the center of the core 26 to the film 24 immediately before being fed (the radius of the film roll 22) changes according to the remaining amount of the film 24. is there. When the radius of the film roll is different, the amount of film fed out from the film roll is different even if the rotation amount of the film roll is common. On the other hand, the CPU 201 can change the rotation speed of the motor 227 for rotating the film roll 22 in accordance with the remaining amount of the film 24 (S99, S101). As a result, the CPU 201 can appropriately feed out the film 24 in an amount necessary for packaging the article 3 from the film roll 22.

(6) After moving the guide roller 31 downward (S31), the CPU 201 rotates the motor 226 in the winding direction and moves the film 24 in the second direction to forcibly wind it around the film roll 22. Make it. In this case, the slack surplus film 24 out of the fed film 24 is wound around the film roll 22, so that the tension acting on the film 24 is increased. For this reason, the film 24 adheres to the base 2 and the article 3. Thus, the CPU 201 can appropriately package the base 2 and the article 3 with the film 24.

(7) The CPU 201 always transports the base 2 and the article 3 at a constant transport speed regardless of the feeding speed specified based on the parameter table 2021. It is preferable that the feeding amount of the film 24 when packaging the pedestal 2 and the article 3 is relatively increased as the conveyance speed of the pedestal 2 and the article 3 is increased. Here, when the conveyance speed of the pedestal 2 and the article 3 is variable, the necessary feeding amount of the film 24 also changes. For this reason, in order to always feed the necessary amount of film 24 from the film roll 22, the rotational speed of the motor 227 must be changed in accordance with the transport speed, and the control becomes complicated. On the other hand, the CPU 201 can specify an appropriate feeding amount of the film 24 based on the feeding speed and feeding time specified based on the parameter table 2021 by keeping the conveyance speed constant. Therefore, the CPU 201 can easily feed out the film 24 of the feeding amount necessary for packaging the base 2 and the article 3 from the film roll 22.

<1-14. Modification>
The present invention is not limited to the above embodiment, and various modifications can be made. In the monitoring process of FIG. 19, the CPU 201 calculates the rotational speed of the motor 227 after the article 3 passes downstream on the right side of the sensor 204 (S91: YES), and calculates the feeding rotational speed stored in the RAM 203. The rotation speed was set (S101). Therefore, when the article 3 is passing the right side of the sensor 204, the CPU 201 rotates the motor 227 at the feeding initial speed set to the feeding rotation speed (S11, S13). On the other hand, when the article 3 is passing the right side of the sensor 204, the CPU 201 may calculate the rotation speed according to the height of the article 3 detected at the time of passage and set it to the feeding rotation speed. A modified example of the monitoring process will be described with reference to FIG. The same processes as those in FIG. 19 are denoted by the same reference numerals, and description thereof is omitted.

  When the CPU 201 determines that the article 3 having a height higher than the second plate-like portions 906 and 907 (see FIG. 13) of the pedestal 2 has passed the right side of the sensor 204 (S91: YES), the CPU 201 outputs a plurality of signals. The provisional value of the height of the article 3 is specified based on the position of the detection unit (S131). The CPU 201 refers to the parameter table 2021. The CPU 201 acquires the feeding speed and the feeding time associated with the provisional value of the height of the article 3 specified by the process of S131 (S133). The CPU 201 acquires the total number of feeding rotations and the total number of winding rotations stored in the flash ROM 202. The CPU 201 calculates the difference by subtracting the total number of winding rotations from the acquired total number of feeding rotations. The CPU 201 applies a predetermined conversion formula to the calculated difference. As a result, the CPU 201 acquires the remaining amount of the film 24 (S135). The CPU 201 calculates the radius of the film roll 22 based on the acquired remaining amount of the film 24. The CPU 201 calculates the rotational speed in the feeding direction of the motor 227 when the film 24 is fed from the film roll 22 at the feeding speed acquired by the process of S133, based on the radius of the film roll 22 (S137). The CPU 201 sets the feeding rotation speed stored in the RAM 203 to the rotation speed calculated by the process of S135 (S139). The CPU 201 sets the payout rotation time stored in the RAM 203 to the payout time acquired by the process of S133 (S139). The CPU 201 returns the process to S91.

  When the CPU 201 determines that the article 3 has passed downstream on the right side of the sensor 204 (S91: NO). The largest value among the provisional values of the heights of the plurality of articles 3 identified by the process of S93 is identified as the height of the articles 3 (S121). The CPU 201 specifies the length of the article 3 based on the counting result of the pulse signal and the conveyance speed (predetermined speed) of the base 2 and the article 3 (S121). The CPU 201 refers to the parameter table 2021 to acquire the feeding speed and feeding time associated with the height and length of the article 3 specified by the process of S121 (S123). The CPU 201 acquires the total number of feeding rotations and the total number of winding rotations stored in the flash ROM 202. The CPU 201 calculates the difference by subtracting the total number of winding rotations from the acquired total number of feeding rotations. The CPU 201 applies a predetermined conversion formula to the calculated difference. As a result, the CPU 201 acquires the remaining amount of the film 24 (S125). The CPU 201 calculates the radius of the film roll 22 based on the acquired remaining amount of the film 24. The CPU 201 calculates the rotational speed in the feeding direction of the motor 227 when the film 24 is fed from the film roll 22 at the feeding speed acquired by the process of S123 based on the radius of the film roll 22 (S127). The CPU 201 sets the feeding rotation speed stored in the RAM 203 to the rotation speed calculated by the process of S127 (S129). The CPU 201 sets the payout rotation time stored in the RAM 203 to the payout time acquired by the process of S123 (S129). CPU201 advances processing to S103.

  In the case of the above modification, the CPU 201 calculates the rotation speed based on the provisional value of the height of the article 3 (S137), and sets the rotation speed (S139). The CPU 201 rotates the motor 227 at the feeding rotation speed by executing the processes of S11 and S13 (see FIG. 17) of the packaging process. When the height of the article 3 detected via the sensor 204 changes according to the conveyance of the pedestal 2, the CPU 201 changes the rotation speed in the feeding direction of the motor 227 according to the change in the height of the article 3. Can be made. Therefore, the CPU 201 can feed an appropriate amount of the film 24 from the film roll 22 even when the height of the article 3 is not constant.

  In the above-described embodiment, the rotation speed of the motor 227 may remain the initial feeding speed. The CPU 201 may rotate the motor 227 at the feeding rotation speed (feeding initial speed) for the acquired rotation time. The CPU 201 may stop the rotation of the motor 227 after the determined rotation time has elapsed. As described above, the CPU 201 can feed out an appropriate amount of the film 24 from the film roll 22 even when at least one of the rotation speed and the rotation time of the motor 227 is preferentially adjusted.

  The CPU 201 specifies the height and length of the article 3 by the sensor 204 and specifies the size of the article 3 (S95, S121, S131). In this case, the CPU 201 may cause the light emitting units of the plurality of detection units of the sensor 204 to emit light one by one from the light emitting unit arranged on the upper side, or one from the light emitting unit arranged on the lower side. You may make it light-emit one by one. As a result, it is possible to suppress the reflected light of the light from being received by the light receiving units adjacent in the vertical direction of the emitted light emitting unit, as in the case where light is emitted from each of the plurality of light emitting units simultaneously. Therefore, the CPU 201 can accurately specify the height and length of the article 3.

  The CPU 201 may specify the height and length of the article 3 by a method different from the method using the sensor 204. For example, the packaging device 1 may include a distance measuring sensor on the lower side of the installation plate 117. The distance measuring sensor may measure the distance to the article 3 passing under the installation plate 117 and output the measurement result. The CPU 201 may specify the height and length of the article 3 according to the measurement result output from the distance measuring sensor. In this case, even when the height of the second plate-like portions 906 and 907 of the base 2 is larger than the height of the article 3, the CPU 201 can accurately specify the height and length of the article 3. Further, the user may perform an operation for inputting the height and length of the article 3 on the input unit 206. When an operation is performed on the input unit 206, the CPU 201 may specify the height and length of the article 3 based on the content of the operation.

  The CPU 201 counts the pulse signals output from the encoder 237, specifies the total number of feeding rotations and the total number of winding rotations, and specifies the remaining amount of the film 24 (S99, S101, S125, S135). The CPU 201 may specify the radius of the film roll 22 by another method. For example, the packaging device 1 may include a distance measuring sensor that can measure the distance to the surface of the film roll 22. For example, the packaging device 1 may include an actuator that can contact the surface of the film roll 22 and measure the distance to the surface. The CPU 201 may specify the radius of the film roll 22 based on the distance measured by the distance measuring sensor or the actuator.

In the said embodiment, it demonstrated concretely exemplifying that the height of the article | item 3 was larger than the height of the 2nd plate-shaped parts 906 and 907 of the base 2. FIG. On the other hand, when the height of the second plate-like portions 906 and 907 of the base 2 is larger than the height of the article 3, the CPU 201 determines the height and length of the second plate-like portions 906 and 907 as the article. The size of 3 may be specified. Note that the pedestal 2 having a size corresponding to the size of the article 3 is normally used as the pedestal 2 on which the article 3 is placed. Therefore, even when the size of the article 3 is specified as described above, the CPU 201 sets the feeding amount and feeding time necessary for feeding an appropriate amount of the film 24 to the second plate-like portion 906 of the base 2, 907 can be obtained according to the height and length.

  The CPU 201 moves the film 24 in the second direction by rotating the motor 227 in the winding direction at the winding rotation speed for the winding rotation time by the processing of S49 and S57. The CPU 201 may rotate the motor 227 in the winding direction at a predetermined rotation speed and a predetermined torque. When the film 24 comes into close contact with the pedestal 2 and the article 3 and a tension of a predetermined level or more is applied to the film 24, the CPU 201 may stop the rotation of the motor 227 in the winding direction. Further, the CPU 201 does not need to rotate the motor 227 only in the feeding direction and in the winding direction. Even in this case, since the tension acts on the film 24 in the process of transporting the pedestal 2 to the upstream side, the film 24 can be brought into close contact with the pedestal 2 and the article 3.

  The CPU 201 may change the rotation speed when rotating the motor 227 in the feeding direction. For example, the CPU 201 rotates the motor 227 when the pedestal 2 is conveyed downstream (S25 to S27) and the rotation of the motor 227 when the guide roller 31 is moved downward (S29 to S31). The speed may be different.

  The timing for starting the rotation of the motor 227 in the feeding direction can be changed. A modified example of the packaging process will be described with reference to FIG. The processes common to the packaging process of FIG. 17 are denoted by the same reference numerals, and description thereof is omitted. The packaging process of FIG. 29 differs from the packaging process of FIG. 17 in that the process of S121 corresponding to the process of S11 of FIG. 17 and the process of S123 corresponding to the process of S13 of FIG. This is a point that is executed during the process, that is, during the conveyance of the base 2 and the article 3 to the downstream side.

  CPU201 starts conveyance to the lower stream side of pedestal 2 (S7), and acquires a feeding rotation speed memorized by RAM203 (S121). The CPU 201 controls the driving unit 217 to rotate the motor 227 in the feeding direction at the obtained feeding rotation speed and rotate the film roll 22 (S123). As a result, the film 24 of the film roll 22 moves in the first direction and is forced out of the film cassette 21 to the outside. The CPU 201 updates the total number of feed rotations stored in the flash ROM 202 in accordance with the pulse signal output from the encoder 237 when the motor 227 rotates. The CPU 201 obtains the feeding rotation speed stored in the flash ROM 202 until the rotation of the motor 227 in the feeding direction is completed by the process of S33, and performs control for rotating the motor 227 in the feeding direction at the feeding rotation speed. repeat.

  In accordance with the pulse signal output from the encoder 232, the CPU 201 specifies the rotation speed of the motor 222 after the conveyance of the base 2 is started by the process of S7. The CPU 201 determines whether or not the side 901 of the first plate-like portion 905 of the pedestal 2 has moved downstream by a predetermined distance with respect to the upper position of the heating portion 86, based on the identified number of rotations of the motor 222. . When the CPU 201 determines that the side 901 of the first plate-like portion 905 of the base 2 has moved a predetermined distance downstream from the upper position of the heating unit 86, the CPU 201 controls the driving unit 212 to drive the motor 222. It stops and the conveyance to the downstream side of the base 2 is stopped (S9).

For example, the CPU 201 starts rotation of the motor 227 in the feeding direction after finishing the adhesion of the film 24 in S21 and before starting the downward movement of the guide roller 31 in S29. The film 24 may be fed out. Further, the CPU 201 may start the rotation of the motor 227 in the feeding direction and feed the film 24 from the film roll 22 at the timing when the conveyance to the downstream side of the base 2 is started by the process of S25. Thereby, the packaging device can appropriately weaken the tension of the film when the film is in close contact with the article in accordance with the conveyance of the base 2 and the article 3 in the downstream direction.

  The CPU 201 may specify the feeding speed and the feeding time without using the parameter table 2021. For example, the CPU 201 may calculate the feeding speed and the feeding time by substituting the height and length of the article 3 into a predetermined calculation formula.

  The packaging device 1 may include a mechanism that moves the guide roller 31 in the transport direction in a state where the guide roller 31 has moved to the lower end. The CPU 201 may move the guide roller 31 to the downstream side instead of transporting the pedestal 2 and the article 3 to the upstream side by the process of S51.

  The packaging device 1 may feed out the film 24 from the film roll 22 by another method without directly rotating the film roll 22 by the rotation mechanism 65. For example, the packaging device 1 may include a drawer mechanism that draws the film 24 discharged from the discharge port of the film cassette 21 from the outside. The packaging device 1 may draw out the film 24 from the film roll 22 by pulling out the film 24 by a pull-out mechanism.

[2. Second embodiment]
A second embodiment of the present invention will be described with reference to the drawings. In the present embodiment, configurations corresponding to those described in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted. Below, it demonstrates focusing on the point which is different from 1st embodiment, and the point supplemented to 1st embodiment. In addition, although the packaging apparatus 1 which concerns on 2nd embodiment can perform a packaging process (refer FIG.17, FIG.18 or FIG.29) and a monitoring process (refer FIG.19 or FIG.28) similarly to 1st embodiment. The description is omitted.

<2-1. Case 800>
As illustrated in FIG. 30, the housing 800 includes an operation unit 306 and a display unit 307 instead of the input unit 206 and the LED 207 (see FIG. 1). The operation unit 306 is provided in the lower housing 803, and the user can instruct the packaging device 1 to start or stop the packaging operation. The display unit 307 is provided on the right standing unit 802A and can display various types of information.

  A portion surrounded by the lower housing 803, the two standing portions 802A, and the erection portion 802B forms an internal space of the housing 800. The internal space of the housing 800 communicates with the outside of the housing 800 through openings 805 formed on the upstream side and the downstream side of the housing 800. The opening 805 includes an inlet 805A that opens upstream from the internal space of the housing 800 and an outlet 805B that opens downstream from the internal space of the housing 800 (see FIGS. 33 and 34).

<2-2. Transport mechanism 50, transport unit 60>
As shown in FIG. 32, endless belts 511 and 512 are provided at the right and left ends of the cradles 12 and 13, respectively. Each of the belts 511 and 512 has teeth on the inner surface. The belt 511 is bridged between a pair of pulleys 252A and 252B. The pulley 252 </ b> A is rotatably provided on the upstream side of the right side surface of the cradle 12. The pulley 252 </ b> B is rotatably provided on the downstream side of the right side surface of the cradle 13. The pulleys 252A and 252B are in contact with the inside of the belt 511 and rotatably support the belt 511. The belt 512 is stretched over a pair of pulleys 253A and 253B. The pulley 253 </ b> A is rotatably provided on the upstream side of the left side surface of the cradle 12. The pulley 253 </ b> B is rotatably provided on the downstream side of the left side surface of the cradle 13. The pulleys 253A and 253B are in contact with the inside of the belt 512, and rotatably support the belt 512.

  Portions of the outer surfaces of the belts 511 and 512 facing upward are exposed to the receiving surfaces 12A and 13A and extend in the transport direction. A plurality of sets of conveying units 60 are provided on the outer side surfaces of the belts 511 and 512, respectively. Each set of conveyance units 60 includes a right conveyance unit 261 provided on the belt 511 and a left conveyance unit 262 provided on the belt 512. In each transport unit 60, the right transport unit 261 and the left transport unit 262 face each other in the left-right direction. In the present embodiment, three sets of transport units 60 are provided along the belts 511 and 512 at equal intervals.

  In the present embodiment, the motor 222 (see FIG. 15) is disposed inside the cradle 13. The motor 222 rotationally drives the pulleys 252B and 253B. The motor 222 rotates the belts 511 and 512 in the forward direction or the reverse direction via the pulleys 252B and 253B. As the belts 511 and 512 rotate in the forward direction, the plurality of sets of transport units 60 transport the pedestal 2 from the upstream side to the downstream side as will be described later. The belts 511 and 512, a plurality of sets of the conveyance unit 60, and the motor 222 are collectively referred to as a conveyance mechanism 50.

<2-3. Film Roll 22>
As shown in FIG. 31, the film roll 22 around which the film 24 is wound is rotatably supported between the upper end portions of the side plate portions 111 and 112. The motor 227 (see FIG. 15) rotates the film roll 22 via the rotation mechanism 65. The film 24 fed out from the rotating film roll 22 is discharged downward in the internal space of the housing 800. When the pedestal 2 on which the article 3 is placed is conveyed from the upstream side toward the downstream side in the internal space of the housing 800, the pedestal 2 is packaged by the film 24.

<2-4. Packaging Mechanism 20>
As shown in FIG. 31, a carriage 349 that is driven by the rotation of the motor 221 is provided on the right side surface of the side plate portion 111. The carriage 349 is connected to a support portion 341 (see FIG. 8). A carriage 350 is provided on the left side surface of the side plate portion 111. The carriage 350 is connected to a support portion 342 (see FIG. 8). The motor 221 can move the support portion 34 that supports the movable roller 30 (see FIG. 8) in the vertical direction via the carriages 349 and 350.

  As shown in FIGS. 33 and 34, the movable roller 30, the pedestal guide roller 71, the holding roller 72, the heating unit 86, and the rotation suppressing unit 80 are collectively referred to as a packaging mechanism 20. A movable range of the packaging mechanism 20 in the internal space of the housing 800 is referred to as a work area. The packaging mechanism 20 can wrap the packaging object (the pedestal 2 and the article 3) in the work area with the film 24 in the work area in the housing 800.

<2-5. Pedestal 2>
Referring to FIG. 30, the pedestal 2 of the present embodiment is different in shape from the pedestal 2 of the first embodiment (see FIG. 13). Specifically, the second plate-like portions 906 and 907 are higher in height than the pedestal 2 of the first embodiment, and no hole 936 (see FIG. 13) is provided. The first plate-like portion 905 has a plurality of holes 927 formed at equal intervals along the bent portions 911 and 912. The plurality of holes 927 formed in the bent portion 911 are arranged in the left-right direction with any of the plurality of holes 927 formed in the bent portion 912, respectively.

  Each of the plurality of holes 927 can be attached with the conveyance unit 60. Specifically, as shown in FIG. 30, when the operator places the pedestal 2 on the receiving base 12, a pair of holes 927 are disposed in the pair of holes 927 on the downstream side in the transport direction. The transport unit 60 is attached. As a result, the pair of transport units 60 attached to the pair of holes 927 can transport the base 2 to the downstream side in the transport direction.

<2-6. Electrical configuration>
The electrical configuration of the packaging device 1 is the same as that of the first embodiment (see FIG. 15), except for the following points. The CPU 201 (see FIG. 15) is electrically connected to the operation unit 306 and the display unit 307 instead of the input unit 206 and the LED 207 (see FIG. 1). Further, the CPU 201 is electrically connected to the inlet line sensor 44 and the outlet line sensor 45 (see FIG. 33). The inlet line sensor 44 corresponds to the sensor 204 (see FIG. 2) of the first embodiment. The flash ROM 202 (see FIG. 15) stores various processing programs to be described later executed by the CPU 201. Details of the inlet line sensor 44 and the outlet line sensor 45 will be described later.

<2-7. Packaging processing>
A packaging process executed by the CPU 201 of the packaging device 1 will be described with reference to FIGS. 36 to 43 are cross-sectional views taken along the line AA in FIG. First, the user turns on the power of the packaging device 1. The CPU 201 initializes the state of the packaging device 1 as follows.

  The drive unit 211 drives the motor 221 to raise the support unit 34 (that is, the movable roller 30) to the top (see FIG. 36). The drive unit 212 drives the motor 222 to rotate the belts 511 and 512, thereby moving the pair of transport units 60 to the initial position on the downstream side of the receiving surface 12A (see FIG. 36). The drive unit 213 drives the motor 223 to lower the heating unit 86 to the lowest position, thereby separating the heater 871 from the conveyance path 103 (see FIG. 36). The drive unit 214 drives the motor 224 to move the stopper 81 downstream (see FIG. 36). The drive unit 215 drives the motor 225 to move the cutting unit 77 to the left side of the transport path 103 (see FIG. 33). The drive unit 216 drives the motor 226 to swing the holding unit 78, thereby separating the holding roller 72 downward from the base guide roller 71 (see FIG. 34).

  Next, the user pulls the film 24 from the film roll 22 downward through the upstream side of the second auxiliary roller 33. The user pulls the leading end of the film 24 to the lower side of the conveyance path 103 and arranges it on the downstream side of the pedestal guide roller 71. The user inputs a preparation completion instruction for the film 24 via the operation unit 306. The drive unit 216 drives the motor 226 to swing the holding unit 78, thereby bringing the holding roller 72 close to the downstream side of the base guide roller 71 (see FIG. 36). The leading edge of the film 24 is sandwiched by the pedestal guide roller 71 and the holding roller 72 from both sides in the transport direction.

  The user places the pedestal 2 on the cradle 12 (see FIG. 36). The user positions the base 2 on the receiving surface 12 </ b> A by mounting the pair of transport units 60 in the initial position in the pair of holes 927 (see FIG. 30). The user places the article 3 on the first plate-like portion 905 of the pedestal 2. In the present embodiment, the entire article 3 on the first plate-like portion 905 is hidden behind the second plate-like portions 906 and 907 (see FIG. 30) in a side view.

  Thus, as shown in FIG. 36, the preparation for executing the packaging process is completed. When the user inputs a packaging execution instruction via the operation unit 306, the CPU 201 reads out and executes the program stored in the flash ROM 202, thereby executing the packaging process shown in FIG.

  As shown in FIG. 36, the CPU 201 controls the drive unit 212 to drive the motor 222 to start the first conveyance (S201). In the first conveyance, the belts 511 and 512 are rotated in the forward direction, and the pair of conveyance units 60 to which the base 2 is mounted are moved downstream along the conveyance path 103. As shown in FIG. 37, the downstream portion of the base 2 that moves downstream passes through the inlet 805A and enters the internal space of the housing 800. The downstream end (side 901) of the first plate-like portion 905 passes over the holding roller 72 while being in contact with the film 24. As the side 901 presses the film 24 downstream, the tip of the film 24 fed out from the film roll 22 goes around the lower surface of the first plate-like portion 905.

  The CPU 201 can specify the rotation speed of the motor 222 in accordance with the pulse signal output from the encoder 232. The CPU 201 accumulates the number of pulses obtained by adding and subtracting the number of pulse signals (+) for rotating the motor 222 forward and the number of pulse signals (−) for reversing the motor 222 from the start of the packaging process. The CPU 201 can identify the current position of the pair of transport units 60 transported from the initial position (that is, the current position of the pedestal 2) based on the cumulative number of pulses of the motor 222 (hereinafter referred to as the cumulative transport pulse number).

  As illustrated in FIG. 37, when the CPU 201 determines that the side 901 has moved downstream by a predetermined distance with respect to the upper position of the heating unit 86 based on the current cumulative number of transport pulses, the first transport ends. (S203). The CPU 201 controls the drive unit 213 to drive the motor 223, and raises the heating unit 86 to the top (S205). When the heating unit 86 rises to the uppermost position, the upper surface of the heating unit 86 approaches the conveyance path 103 from below. The film 24 is sandwiched between the upper surface of the heating part 86 and the lower surface of the first plate-like part 905. The CPU 201 heats the heater 871 for a predetermined time (S207). The heater 871 heats and melts the film 24. The melted film 24 is adhered to the vicinity of the side 901 on the lower surface of the first plate-like portion 905.

  As shown in FIG. 38, the CPU 201 controls the drive unit 213 to drive the motor 223, and lowers the heating unit 86 to the lowest position (S209). When the heating unit 86 is lowered to the lowest position, the upper surface of the heating unit 86 is separated from the transport path 103. The CPU 201 controls the drive unit 216 to drive the motor 226 to execute nip release (S211). In releasing the nip, the holding portion 78 is swung to separate the holding roller 72 downward from the pedestal guide roller 71. The pedestal guide roller 71 and the holding roller 72 release the leading end of the film 24.

  The CPU 201 controls the driving unit 212 to drive the motor 222 and starts the second conveyance (S213). In the second transport, as in the first transport, the set of transport units 60 to which the pedestal 2 is mounted is moved downstream. The downstream portion of the pedestal 2 that moves to the downstream side passes through the outlet 805 </ b> B, advances to the outside of the housing 800, and moves onto the cradle 13. The leading end of the film 24 fed out from the film roll 22 moves downstream as the pedestal 2 moves while being adhered to the lower surface of the pedestal 2. The film 24 extending from the support portion 34 toward the side 901 covers the upper side of the article 3. When the CPU 201 determines that the upstream end (side 902) of the first plate-shaped portion 905 has moved downstream from the intersection position 105 based on the current cumulative number of transport pulses, the second transport is terminated ( S215).

  As shown in FIG. 39, the CPU 201 controls the drive unit 211 to drive the motor 221 and starts to lower the support unit 34 (S217). The guide roller 31 supported by the support portion 34 moves from the uppermost side to the lowermost side along the movement path 104. The guide roller 31 contacts the film 24 disposed below from above, and guides the film 24 downward along the movement path 104. The film 24 is pressed against the base 2 and the article 3 from above.

  In accordance with the pulse signal output from the encoder 231, the CPU 201 specifies the rotation speed of the motor 221 from the start of lowering of the support portion 34. When the CPU 201 determines that the guide roller 31 has moved to the lowest position based on the identified number of rotations of the motor 221, the CPU 201 ends the lowering of the support portion 34 (S219). The guide roller 31 disposed at the lowest position contacts the conveyance path 103 from below. The film 24 covers the first plate-shaped portion 905 and the downstream side, the upper side, and the upstream side of the article 3.

  As shown in FIG. 40, the CPU 201 controls the drive unit 212 to drive the motor 222 to start the third conveyance (S221). In the third conveyance, the belts 511 and 512 are rotated in the opposite direction, and the pair of conveyance units 60 to which the base 2 is attached are moved upstream along the conveyance path 103. The side 902 of the base 2 that moves to the upstream side crosses the intersection position 105 from the downstream side toward the upstream side while contacting the film 24. The side 902 passes through the upper position of 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. Between the lower surface of the first plate-shaped portion 905 and the guide roller 31, the film 24 that wraps around the lower side of the base 2 is sandwiched. If the CPU 201 determines that the side 902 has moved upstream by a predetermined distance with respect to the upper position of the heating unit 86 based on the current cumulative number of transport pulses, the third transport ends (S223).

  As shown in FIG. 41, the CPU 201 controls the drive unit 214 to drive the motor 224, and executes a stopper operation (S225). In the stopper operation, the stopper 81 of the rotation suppressing unit 80 is moved upstream. On the upstream side of the stopper 81, the guide roller 31 that has moved to the lowest position is disposed. As the stopper 81 moves upstream, the rubber of the stopper 81 comes close to the guide roller 31. The film 24 wound around the guide roller 31 is sandwiched between the stopper 81 and the guide roller 31. When the stopper 81 pushes the guide roller 31 to the upstream side through the film 24, the rotation of the guide roller 31 is restricted.

  The CPU 201 controls the drive unit 215 to drive the motor 225, and performs the cutter operation (S227). In the cutter operation, the cutting portion 77 is moved from the left side to the right side along the guide rail 74 (see FIG. 11). The cutting part 77 separates the part of the film 24 that covers the first plate-like part 905 and the article 3 from the film roll 22. The CPU 201 controls the drive unit 216 to drive the motor 226, and executes nip pressure bonding (S229). In the nip pressure bonding, the holding portion 78 is swung and the holding roller 72 is brought close to the downstream side of the pedestal guide roller 71. The end of the film 24 cut by the cutting portion 77 is sandwiched between the pedestal guide roller 71 and the holding roller 72.

  As shown in FIG. 42, the CPU 201 raises the heating unit 86 to the highest position, similarly to S205 (S231). When the heating unit 86 rises to the uppermost position, the upper surface of the heating unit 86 approaches the conveyance path 103 from below. Between the upper surface of the heating part 86 and the lower surface of the first plate-like part 905, the end of the film 24 cut off from the film roll 22 is sandwiched. As in S207, the CPU 201 heats the heater 871 for a predetermined time (S233). The film 24 melted by the heater 871 adheres to the vicinity of the side 902 of the first plate-like portion 905. Thereby, the film 24 cut from the film roll 22 covers the base 2 and the article 3.

  As shown in FIG. 43, the CPU 201 lowers the heating unit 86 to the lowest position in the same manner as in S209 (S235). The CPU 201 controls the driving unit 214 to drive the motor 224, and executes stopper release (S237). In the stopper release, the stopper 81 is moved downstream. The rubber of the stopper 81 that has moved downstream is separated from the guide roller 31. The guide roller 31 is in a rotatable state.

  Although not shown, the CPU 201 controls the driving unit 212 to drive the motor 222 and starts the fourth conveyance (S239). In the fourth transport, as in the first transport, the set of transport units 60 to which the pedestal 2 is mounted is moved downstream. That is, the pedestal 2 and the article 3 that have been packaged exit from the internal space of the housing 800 to the outside of the housing 800 through the outlet 805B. If the CPU 201 determines that the pedestal 2 has reached the downstream end of the cradle 13 based on the current cumulative number of conveyance pulses, the fourth conveyance is terminated (S241). Thus, the packaging process ends.

<2-8. Inlet line sensor 44 and outlet line sensor 45>
As shown in FIGS. 33 and 34, the packaging device 1 includes an inlet line sensor 44 and an outlet line sensor 45. The inlet line sensor 44 is a non-contact sensor provided at the upstream end of the side plate portions 111 and 112 (see FIG. 31), and can detect an object passing through the inlet 805A. The outlet line sensor 45 is a non-contact sensor provided at the downstream end of the side plate portions 111 and 112, and can detect an object passing through the outlet 805B.

  The inlet line sensor 44 includes a plurality (seven in this embodiment) of optical sensors 441 to 447. The optical sensors 441 to 447 are arranged substantially parallel to the height direction (vertical direction in the present embodiment) of the packaging objects (the pedestal 2 and the article 3 in the present embodiment) that are transported by the transport unit 60 described above. Be placed. The optical sensors 441 to 447 can detect objects facing each other at different vertical positions. The optical sensors 441 to 447 are arranged at equal intervals from the upper side to the lower side over substantially the entire vertical direction of the inlet 805A. The uppermost photosensor 441 is in a vertical position substantially equal to the upper end of the entrance 805A. The lowest-order optical sensor 447 is at a position in the vertical direction substantially equal to the lower end portion (that is, the receiving surface 12A) of the entrance 805A.

  As shown in FIG. 44, each of the optical sensors 441 to 447 includes a pair of a light emitting unit 46 and a light receiving unit 47 that face each other in the left-right direction across the entrance 805A (that is, the conveyance path 103). Each light emitting unit 46 emits light toward the light receiving unit 47 facing each other. Each light receiving unit 47 outputs a signal according to the intensity of the received light. Each set of the light emitting unit 46 and the light receiving unit 47 is provided on one of a pair of left and right substrates 440 included in the entrance line sensor 44. The left substrate 440 is provided along the left side of the entrance 805A at the upstream end of the side plate portion 112. The right substrate 440 is provided along the right side of the inlet 805A at the upstream end of the side plate portion 111.

  In the present embodiment, the light emitting unit 46 of the optical sensor 441, the light receiving unit 47 of the optical sensor 442, the light emitting unit 46 of the optical sensor 443, the light receiving unit 47 of the optical sensor 444, the light emitting unit 46 of the optical sensor 445, and the light reception of the optical sensor 446. The portion 47 and the light emitting portion 46 of the optical sensor 447 are arranged in the vertical direction on the right substrate 440. The light receiving unit 47 of the optical sensor 441, the light emitting unit 46 of the optical sensor 442, the light receiving unit 47 of the optical sensor 443, the light emitting unit 46 of the optical sensor 444, the light receiving unit 47 of the optical sensor 445, the light emitting unit 46 of the optical sensor 446, and the light The light receiving portions 47 of the sensor 447 are arranged in the vertical direction on the left substrate 440.

  Of the plurality of optical sensors 441 to 447, arbitrary two sensors adjacent in the vertical direction are referred to as a first sensor and a second sensor. The light emitting unit 46 of the first sensor and the light receiving unit 47 of the second sensor are adjacent to each other in the vertical direction on one side of the conveyance path 103 in the left-right direction, and the light receiving unit 47 of the first sensor and the light emitting unit 46 of the second sensor. Are adjacent to each other in the vertical direction on the other side of the conveyance path 103 in the horizontal direction. Accordingly, in each of the pair of substrates 440, the light emitting units 46 and the light receiving units 47 are alternately arranged in the vertical direction, so that the light emitting units 46 and the light receiving units 47 are not adjacent in the vertical direction.

  Thereby, the light emitted from the arbitrary light emitting unit 46 is suppressed from being received by another light receiving unit 47 different from the light receiving unit 47 facing the arbitrary light emitting unit 46. For example, the light emitting unit 46 of the optical sensor 443 emits light in the left direction toward the light receiving unit 47 of the optical sensor 443. The light emitting units 46 of the optical sensors 442 and 444 are arranged on both upper and lower sides of the light receiving unit 47 of the optical sensor 443, respectively. Therefore, the other optical sensors 442 and 444 adjacent to the optical sensor 443 are less likely to erroneously detect the light emission of the optical sensor 443.

  As shown in FIG. 44, when no object is present at the entrance 805A, in each of the optical sensors 441 to 447, each light receiving unit 47 receives light emitted from the corresponding light emitting unit 46. The received light amount indicated by the signal output from the light receiving unit 47 of each of the optical sensors 441 to 447 is a reference light amount corresponding to the light emission of the light emitting unit 46. Therefore, the CPU 201 can detect that no object is present at the entrance 805A.

  When an object is present at the entrance 805A, at least part of the light emitted from the light emitting unit 46 of each of the optical sensors 441 to 447 is blocked by the object present at the entrance 805A. In the example shown in FIG. 45, the light emitted from the light emitting portions 46 of the respective optical sensors 443 to 447 is blocked by the second plate-like portions 906 and 907 of the base 2. The amount of received light indicated by the signal output from the light receiving unit 47 of each of the optical sensors 443 to 447 is smaller than the reference light amount. Therefore, the CPU 201 can detect that an object is present at the entrance 805A and that the optical sensors 443 to 447 are opposed to the object present at the entrance 805A.

  As shown in FIGS. 33 and 34, the outlet line sensor 45 has the same configuration as the inlet line sensor 44. The exit line sensor 45 includes a plurality (seven in this embodiment) of optical sensors 451 to 457. The optical sensors 451 to 457 are arranged at equal intervals from the upper side to the lower side over substantially the entire vertical direction of the outlet 805B. The uppermost photosensor 451 is in a vertical position substantially equal to the upper end of the outlet 805B. The lowest-order optical sensor 457 is at a position in the vertical direction substantially equal to the lower end portion (that is, the receiving surface 13A) of the outlet 805B. The vertical positions of the optical sensors 451 to 457 are substantially equal to the vertical positions of the optical sensors 441 to 447 described above, respectively.

  Each of the optical sensors 451 to 457 includes a pair of a light emitting unit 46 and a light receiving unit 47 that face each other in the left-right direction across the outlet 805B. Each set of the light emitting unit 46 and the light receiving unit 47 is provided on one of a pair of left and right substrates 450 included in the outlet line sensor 45. The left substrate 450 is provided along the left side of the outlet 805 </ b> B at the downstream end of the side plate portion 112. The right substrate 450 is provided along the right side of the outlet 805 </ b> B at the downstream end of the side plate portion 111. In each of the pair of substrates 450, the light emitting units 46 and the light receiving units 47 are alternately arranged in the vertical direction, so that the light emitting units 46 and the light receiving units 47 are not adjacent to each other in the vertical direction.

<2-9. Detection Control of Inlet Line Sensor 44 and Outlet Line Sensor 45>
With reference to FIGS. 44 and 45, detection control of the inlet line sensor 44 and the outlet line sensor 45 will be described. Hereinafter, the detection control of the inlet line sensor 44 will be described, but the detection control of the outlet line sensor 45 is the same. The CPU 201 controls light emission of each light emitting unit 46 included in the entrance line sensor 44 via the pair of substrates 440. In the present embodiment, when the CPU 201 causes the light emitting units 46 of the optical sensors 441 to 447 to emit light, at least the light emitting unit 46 of the first sensor and the light emitting unit 46 of the second sensor emit light at different timings. For example, the CPU 201 causes the light emitting units 46 of the optical sensors 441 to 447 to emit light sequentially in the following predetermined order.

  As the light emission sequence of the first example, the CPU 201 sequentially switches the light emitting units 46 of the optical sensors 441 to 447 from the highest light emitting unit 46 in descending order at predetermined time intervals to emit and extinguish light. Alternatively, the CPU 201 causes the light emitting units 46 of the optical sensors 441 to 447 to sequentially emit light at predetermined time intervals in ascending order from the lowest light emitting unit 46. According to this, when one light-receiving part 47 receives light from the light-emitting part 46 facing, the remaining six light-emitting parts 46 do not emit light, so that erroneous detection of light is suppressed.

  As a light emission sequence of the second example, the CPU 201 sequentially switches light emitting portions 46 of a plurality of light sensors that are not adjacent in the vertical direction among the light emitting portions 46 of the optical sensors 441 to 447 at predetermined time intervals to emit light. And turn it off. For example, first, the CPU 201 causes the light emitting units 46 of the optical sensors 441, 443, 445, and 447 to simultaneously emit light and extinguish. Next, the CPU 201 causes the light emitting units 46 of the optical sensors 442, 444, and 446 to simultaneously emit light and extinguish. According to this, when the light receiving units 47 receive light from the light emitting units 46 facing each other, the other light emitting units 46 adjacent in the vertical direction to each of the received light receiving units 47 emit light. Therefore, false detection of light is suppressed.

<2-10. Monitoring process>
The monitoring process executed by the CPU 201 of the packaging device 1 will be described with reference to FIG. When the user inputs a packaging execution instruction via the operation unit 306, the CPU 201 reads out and executes the program stored in the flash ROM 202, thereby executing the monitoring process shown in FIG. That is, the packaging process and the monitoring process are executed by the CPU 201 in parallel. In the following description, the pedestal 2 that is mounted on the set of transport units 60 at the initial position and is transported by the above-described packaging process is referred to as a pedestal 2 to be packaged.

  First, the CPU 201 uses all the optical sensors 441 to 447 as foreign matter sensors and starts foreign matter detection of the entrance line sensor 44 (S251). The foreign matter sensor is a sensor for detecting an opposing object as an object (hereinafter referred to as a foreign matter) different from the packaging object. When the CPU 201 determines that any of the optical sensors 441 to 447 is facing the object in the foreign object detection started in S51, the CPU 201 considers that the foreign object has entered the entrance 805A and executes error processing not shown. To do. For example, the error process includes forcibly canceling the packaging process (FIG. 35) and displaying an error on the display unit 307.

  The CPU 201 starts foreign matter detection of the exit line sensor 45 using all of the optical sensors 451 to 457 as foreign matter sensors (S253). When the CPU 201 determines that any of the optical sensors 451 to 457 is facing the object in the foreign object detection started in S253, the CPU 201 regards that the foreign object has entered the exit 805B and executes error processing.

  The CPU 201 determines whether or not the pedestal 2 to be packaged is immediately before the entrance detection area based on the current cumulative conveyance pulse number (S255). The entrance detection area is an area where the entrance line sensor 44 can detect an object (in this embodiment, the entrance 805A). For example, when the side 901 of the pedestal 2 to be packaged reaches the upstream end of the entrance detection area by the first conveyance (see FIG. 37), the CPU 201 has the pedestal 2 to be packaged immediately before the entrance detection area. (S255: YES). When the pedestal 2 to be packaged is not immediately before the entrance detection area (S255: NO), the CPU 201 returns the process to S255.

  When the pedestal 2 is immediately before the entrance detection area (S255: YES), the CPU 201 ends the foreign matter detection of the entrance line sensor 44 and starts the opposite detection of the entrance line sensor 44 (S257). CPU201 memorize | stores the sensor (henceforth object sensor) which opposed the object among optical sensors 441-447 in RAM203 (refer FIG. 15) in the opposing detection started by S257. In the present embodiment, one of the optical sensors 441 to 447 that faces the pedestal 2 or the article 3 passing through the entrance 805A is stored as a target sensor in the RAM 203 (see FIG. 15). In the example shown in FIGS. 37 and 45, the optical sensors 443 to 447 are stored as target sensors.

  The CPU 201 determines whether the pedestal 2 to be packaged has passed through the entrance detection area based on the current cumulative number of transport pulses (S259). In the present embodiment, when the side 902 of the pedestal 2 to be packaged is moved downstream from the entrance detection region by the above-described second conveyance (see FIG. 38), the CPU 201 causes the pedestal 2 to be packaged to pass through the entrance detection region. (S259: YES). When the base 2 to be packaged does not pass the entrance detection area (S259: NO), the CPU 201 returns the process to S259.

  When the pedestal 2 to be packaged has passed through the entrance detection area (S255: YES), the CPU 201 finishes detecting the facing of the entrance line sensor 44, and further uses all of the optical sensors 441 to 447 as foreign matter sensors. Foreign matter detection is started (S261). When the CPU 201 determines that any of the optical sensors 441 to 447 is facing the object in the foreign object detection started in S261, the CPU 201 executes error processing.

  The CPU 201 determines a sensor capable of facing based on the result of the facing detection executed in S257 to S261 (S263). The opposable sensor is an optical sensor at a position in the vertical direction that can be opposed to the packaging object among the optical sensors 451 to 457 of the exit line sensor 45. For example, the CPU 201 determines that all of the optical sensors 451 to 457 arranged above the uppermost target sensor are sensors that can face each other. The highest target sensor is the uppermost target sensor among all the target sensors stored in the RAM 203.

  The CPU 201 selects a foreign substance sensor from the optical sensors 451 to 457 of the exit line sensor 45 based on the determination result of S263 (S265). That is, the CPU 201 sets all the sensors capable of facing determined in S263 as foreign matter sensors. In the example shown in FIGS. 37 and 45, the optical sensor 443 is the highest target sensor among the optical sensors 443 to 447 that are target sensors. Of the optical sensors 451 to 457, the optical sensors 451 and 452 above the optical sensor 443 are determined to be opposed sensors and set as foreign matter sensors. The other optical sensors 453 to 457 that are not selected as the foreign matter sensors do not detect the objects facing each other because the light irradiation by the light emitting unit 46 and the signal output by the light receiving unit 47 are interrupted.

  Accordingly, when the CPU 201 determines that any of the foreign matter sensors (for example, the optical sensors 451 and 452) selected in S265 is facing the object, the CPU 201 regards that the foreign matter has entered the exit 805B and executes error processing. . On the other hand, stopped sensors (for example, the optical sensors 453 to 457) different from the foreign matter sensor do not detect the objects facing each other. Therefore, even if the base 2 to be packaged passes through the outlet 805B, the CPU 201 does not execute error processing.

  The CPU 201 determines whether or not the pedestal 2 to be packaged has passed through the exit detection area based on the current cumulative number of transport pulses (S267). The exit detection area is an area where the exit line sensor 45 can detect an object (in this embodiment, the exit 805B). For example, if the side 902 of the pedestal 2 to be packaged has moved to the downstream side of the exit detection region by the fourth conveyance described above, the CPU 201 determines that the pedestal 2 to be packaged has passed the exit detection region (S267: YES) ). When the base 2 to be packaged does not pass through the exit detection area (S267: NO), the CPU 201 returns the process to S267.

  When the pedestal 2 to be packaged passes the exit detection area (S267: YES), the CPU 201 cancels the selection of the foreign matter sensor executed in S265 (S269). Thereby, all the optical sensors 451-457 are made into a foreign material sensor, and the foreign material detection of the exit line sensor 45 is restarted. When the CPU 201 determines that any of the optical sensors 451 to 457 is facing the object, the CPU 201 executes error processing.

  The CPU 201 determines whether or not the conveyance of the pedestal 2 to be packaged is completed based on whether or not S241 (see FIG. 35) has been executed (S271). When the conveyance of the pedestal 2 to be packaged is not completed (S271: NO), the CPU 201 returns the process to S271. When the conveyance of the pedestal 2 to be packaged is completed (S271: YES), the foreign matter detection of the inlet line sensor 44 is finished (S273), and the foreign matter detection of the outlet line sensor 45 is finished (S275). Thus, the monitoring process ends.

<2-11. Examples of operational effects of second embodiment>
(1) The packaging objects (the pedestal 2 and the article 3) before packaging are conveyed from the outside of the housing 800 to the internal space of the housing 800 via the inlet 805A. In the work area of the internal space of the housing 800, the packaging object is packaged with the film 24. The packaged object after packaging is conveyed from the internal space of the housing 800 to the outside of the housing 800 via the outlet 805B. An exit line sensor 45 (that is, a plurality of optical sensors 451 to 457) that can detect objects facing each other at different height positions is provided along the exit 805B. A foreign substance sensor is selected from the optical sensors 451 to 457 based on the result of determining which of the optical sensors 451 to 457 can face the packaging object (S263, S265). Based on the detection result of the selected foreign matter sensor, it is determined whether or not a foreign matter has been detected (foreign matter detection executed from S253 until it ends in S275).

  According to this configuration, a foreign matter sensor that detects an object passing through the outlet 805B is selected based on a result of determining which of the optical sensors 451 to 457 can face the packaging object. Optical sensors other than the foreign matter sensor selected from among the optical sensors 451 to 457 are not used for detection of foreign matter entering the housing 800. Using the selected foreign matter sensor, the packaging device 1 can accurately determine whether or not an object that enters the housing 800 is a foreign matter.

(2) While the packaging object is in a position (exit detection area) facing any of the optical sensors 451 to 457 (S259: YES), the optical sensor 451 to 457 that does not face the packaging object is a foreign object (S263, S265). While the packaging object is in a position that does not face all of the optical sensors 451 to 457 (S267: YES), all of the optical sensors 451 to 457 are used to detect foreign matter (S269). Therefore, the packaging device 1 can detect the foreign matter entering the housing 800 while preventing the packaging object from being erroneously detected as the foreign matter.

(3) Among the optical sensors 451 to 457, one that is higher than the packaging object is used for detecting foreign matter (S263, S265). Therefore, the packaging device 1 can detect the foreign matter entering the housing 800 while preventing the packaging object from being erroneously detected as the foreign matter.

(4) Based on the detection result by the inlet line sensor 44 (that is, the optical sensors 441 to 447) on the upstream side in the transport direction with respect to the work area of the housing 800, any of the optical sensors 451 to 457 is a packaging object. It is determined whether or not they can be opposed to each other (S263). Therefore, the packaging apparatus 1 can identify the optical sensors 451 to 457 that do not oppose the packaging object before the packaging object is conveyed to the position (entrance detection region) that opposes the optical sensors 441 to 447.

(5) Since the packaging object does not face all of the optical sensors 441 to 447 while the packaging object is at a position away from the inlet 805A in the conveying direction, all of the optical sensors 441 to 447 detect foreign matter. Used for. Therefore, the packaging device 1 can detect foreign matter that enters the housing 800 on both sides of the conveyance direction with respect to the work area of the housing 800.

(6) The entrance line sensor 44 that can detect an object at the entrance 805A includes a plurality of optical sensors 441 to 447 that can detect opposing objects at positions in different height directions. Each of the optical sensors 441 to 447 includes a light receiving unit 47 and a light emitting unit 46 that are disposed to face each other across the conveyance path 103 in the width direction. In the first sensor and the second sensor adjacent to each other in the height direction among the optical sensors 441 to 447, the light emitting unit 46 of the first sensor and the light receiving unit 47 of the second sensor are on one side in the width direction of the transport path 103. It is provided side by side in the height direction. The light receiving portion 47 of the first sensor and the light emitting portion 46 of the second sensor are provided side by side in the height direction on the other side in the width direction of the transport path 103.

  According to this configuration, the light emitting unit 46 of the first sensor and the light receiving unit 47 of the second sensor are not adjacent to each other in the height direction, and the light receiving unit 47 of the first sensor and the light emitting unit 46 of the second sensor are in the height direction. Not next to each other. The light emitted from the light emitting unit 46 of the first sensor is suppressed from being received by the light receiving unit 47 of the second sensor, and the light emitted from the light emitting unit 46 of the second sensor is received by the light receiving unit 47 of the first sensor. Is suppressed. In other words, the optical sensors 441 to 447 can accurately detect the light emission of the light receiving part 47 facing each light emitting part 46, so that erroneous detection of light is suppressed. Therefore, the packaging device 1 can accurately detect the height of the packaging object.

(7) In the optical sensor 447, the light receiving unit 47 and the light emitting unit 46 are arranged along the lower end of the entrance 805A. Accordingly, the packaging device 1 can accurately detect a foreign object even when a small foreign object enters along the lower end of the entrance 805A.

(8) At least the light emitting unit 46 of the first sensor and the light emitting unit 46 of the second sensor emit light at different timings. Therefore, the packaging device 1 can suppress each light receiving unit 47 of the optical sensors 441 to 447 from erroneously detecting light emitted from the light emitting units 46 different from the corresponding light emitting units 46.

(9) The light emitting units 46 of the optical sensors 441 to 447 emit light sequentially in a predetermined order. Therefore, the packaging device 1 can reduce the processing burden related to the light emission control of the plurality of light emitting units 46.

(10) In the above embodiment, the outlet line sensor 45 has the same structure and control as the inlet line sensor 44. Therefore, the exit line sensor 45 (that is, the optical sensors 451 to 457) can also exhibit the same operational effects as (6) to (9).

<2-12. Modification>
The present invention is not limited to the above embodiment, and various modifications can be made. The shape and size of the sensor capable of facing (the base 2 and the article 3) can be changed. For example, the base 2 of the modified example shown in FIG. 47 has a flat plate shape mainly composed of the first plate-like portion 905 without the second plate-like portions 906 and 907 (see FIG. 30). In this case, in the opposing detection (S257 to S261) executed in the monitoring process (see FIG. 46), the optical sensors 444 to 447 are stored in the RAM 203 as the opposing sensor so as to face the article 3. In this case, among the optical sensors 451 to 457 of the exit line sensor 45, the optical sensors 451 to 453 that are above the optical sensor 444 that is the uppermost opposing sensor are determined as opposing sensors (S263).

  The number of optical sensors provided in each of the entrance line sensor 44 and the exit line sensor 45 is not limited to seven. The number of light sensors of the entrance line sensor 44 and the number of light sensors of the exit line sensor 45 may be different. The vertical positions of the plurality of optical sensors provided in the entrance line sensor 44 may be different from the vertical positions of the plurality of optical sensors provided in the exit line sensor 45. However, it is preferable that the inlet line sensor 44 and the outlet line sensor 45 are provided with a plurality of optical sensors so that the detectable range of the outlet line sensor 45 is the same as the detectable range of the inlet line sensor 44 or wide in the vertical direction. It is.

  A line sensor having the same structure and control as the inlet line sensor 44 and the outlet line sensor 45 can be used not only for monitoring processing (see FIG. 46) but also for other purposes. For example, by arranging this line sensor at an arbitrary location along the conveyance path 103, the packaging device 1 can accurately detect an object passing through the arbitrary location or its height.

  In the determination process of S263, a sensor capable of facing may be determined based on information different from the result of the facing detection (S257 to S261). For example, the operator inputs the maximum height (length in the vertical direction) of the packaging object from the operation unit 306 before inputting the packaging execution instruction. In the monitoring process (see FIG. 46), the CPU 201 determines, based on the input maximum height, an optical sensor that is above the packaging object conveyed on the conveyance path 103 as an opposing sensor (S263). In this case, the CPU 201 can select a foreign matter sensor used for foreign matter detection of the exit line sensor 45 without executing the facing detection (S257 to S261) (S265).

  The packaging mechanism 20 may package the packaging object in the work area with a film by a method different from the above embodiment. The transport mechanism 50 and the transport unit 60 may transport the packaging object by a method different from the above embodiment. At least one of the packaging process (see FIG. 35), the monitoring process (see FIG. 46), and the detection control of the inlet line sensor 44 and the outlet line sensor 45 is replaced with a microcomputer or an ASIC instead of the method executed by the CPU 201 based on a program. May be executed by

[3. Remarks]
In the above embodiment, the guide roller 31 is an example of the “guide unit” in the present invention. The rotation mechanism 65 is an example of the “movement mechanism” in the present invention. The CPU 201 that performs the process of S97 is an example of the “first acquisition unit” in the present invention. The CPU 201 that performs the process of S17 is an example of the “first bonding means” in the present invention. The CPU 201 performing the process of S25 corresponds to the “conveying means” of the present invention. The CPU 201 that performs the process of S29 is an example of the “guidance section moving means” in the present invention. The CPU 201 that performs the processing of S51 is an example of the “relative movement means” in the present invention. The CPU 201 that performs the process of S65 is an example of the “second bonding unit” in the present invention. The CPU 201 that performs the process of S13 is an example of the “first movement control unit” in the present invention. The flash ROM 202 that stores the parameter table 2021 is an example of the “storage unit” in the present invention. The CPU 201 that performs the process of S43 is an example of the “second acquisition unit” in the present invention. The CPU 201 that performs the process of S49 is an example of the “second movement control unit” in the present invention.

  The outlet 805B is an example of the “first position” in the present invention. The optical sensors 451 to 457 of the exit line sensor 45 are an example of “a plurality of first sensors” in the present invention. The CPU 201 that performs the process of S263 is an example of the “sensor determination unit” in the present invention. The CPU 201 that performs the processes of S265 and S269 is an example of the “sensor selection unit” in the present invention. The CPU 201 that performs the processing of S261 is an example of the “foreign matter determination unit” in the present invention. The CPU 201 that specifies the position of the pedestal 2 based on the cumulative number of carrier pulses is an example of the “position specifying means” in the present invention. The inlet 805A is an example of the “second position” in the present invention. The optical sensors 441 to 447 of the entrance line sensor 44 are an example of “a plurality of second sensors” in the present invention. The inlet line sensor 44 is an example of the “detecting means” in the present invention. The optical sensors 441 to 447 are examples of the “plural sensors” of the present invention. The opening 805 is an example of the “opening” in the present invention. The CPU 201 is an example of the “light emission control unit” in the present invention.

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 2 Base 3 Goods 21 Film cassette 22 Film roll 24 Film 30 Movable roller 31 Guide roller 44 Inlet line sensor 45 Outlet line sensor 46 Light emission part 47 Light reception part 50 Conveyance mechanism 51 Belt 57 Transmission part 60 Conveyance part 61 First conveyance Unit 62 second transport unit 65 rotation mechanism 67 transmission mechanism 103 transport path 104 travel path 105 intersection position 201 CPU
202 flash ROM
203 RAM
204 sensor 211 drive unit 212 drive unit 217 drive unit 221 motor 222 motor 227 motor 231 encoder 232 encoder 237 encoder 441-447 photosensor 451-457 photosensor 800 housing 805 opening 805A entrance 805B exit

Claims (21)

A packaging device for packaging a pedestal and an article placed on the pedestal with a film,
A film roll wound with the film;
A transport mechanism for transporting the pedestal on which the article is placed;
A guide that is movable along a moving path that extends in a direction that intersects with a transport path through which the pedestal that is transported by the transport mechanism passes, and for guiding the film;
A moving mechanism that moves the film in a first direction that is a moving direction of the film that is fed from the film roll when the pedestal is conveyed by the conveying mechanism;
A first acquisition means for acquiring a first parameter capable of specifying a moving amount of the film by the moving mechanism;
First adhering means for adhering a part of the film to the pedestal;
Transport means for transporting the pedestal from the upstream side to the downstream side in the transport direction with respect to the intersection position, which is a position where the transport path and the movement path intersect, by the transport mechanism;
Guide unit moving means for transporting the pedestal by the transport unit and moving the guide unit along the movement path when the upstream end of the pedestal moves to the downstream side of the intersection position. When,
Relative moving means for moving the upstream end of the pedestal relative to the crossing position after moving the guiding part by the guiding part moving means;
A second unit for adhering the other part of the film to the pedestal when the pedestal is relatively moved by the relative movement means and the upstream end of the pedestal is disposed on the upstream side of the crossing position; Bonding means;
The movement specified by the first parameter acquired by the first acquisition means during at least a part of the time before the relative movement means relatively moves the upstream end of the pedestal to the upstream side. A packaging apparatus comprising: a first moving unit that moves the film in the first direction by the moving mechanism according to the amount.   The first moving means starts the movement of the film in the first direction by the moving mechanism before adhering a part of the film to the pedestal by the first adhering means, and the guiding portion moving means Until the relative movement of the upstream end of the pedestal by the relative movement means is started before the relative movement to the upstream side is started. The packaging apparatus according to claim 1, wherein the movement in the first direction is terminated.   The first moving means is configured by the moving mechanism between the time when the part of the film is adhered to the pedestal by the first adhering means and before the movement of the guiding part by the guiding part moving means is started. The movement of the film in the first direction is started, and after the movement of the guiding portion by the guiding portion moving means is completed, the upstream end of the pedestal by the relative moving means is moved to the upstream side. 3. The packaging device according to claim 1, wherein the movement of the film in the first direction by the moving mechanism is terminated before the relative movement is started. A detection unit capable of detecting the size of the article;
The said 1st acquisition means acquires the feeding speed and feeding time of the said film according to the magnitude | size of the said article detected by the said detection part as said 1st parameter. The packaging device according to any one of the above. The packaging device according to claim 4, wherein the detection unit detects the height of the article from the pedestal and the length in the transport direction as the size of the article.   The packaging apparatus according to claim 5, wherein the first acquisition unit acquires the feeding speed relatively faster as the height is larger.   The packaging apparatus according to claim 5 or 6, wherein the first acquisition unit acquires the feeding time that is relatively longer as the length is larger. The transport means transports the pedestal at a constant transport speed regardless of the feeding speed acquired by the first acquisition means,
The packaging device according to any one of claims 4 to 7, wherein the relative movement unit relatively moves the pedestal at a constant conveyance speed regardless of the feeding speed acquired by the first acquisition unit. .   The first moving means moves the film in the first direction at a predetermined initial feeding speed before the size of the article is detected by the detection unit. The packaging device according to any one of 8. A storage unit for storing a table in which the size of the article and the first parameter are associated;
The said 1st acquisition means acquires said 1st parameter linked | related with the magnitude | size of the said article detected by the said detection part based on the said table memorize | stored in the said memory | storage part. The packaging device according to any one of 4 to 9. The moving mechanism moves the film in the first direction by rotating the film roll,
A second acquisition means for acquiring a second parameter corresponding to the amount of winding of the film wound on the film roll;
The first moving unit includes the moving mechanism according to the first parameter acquired by the first acquiring unit and the moving amount specified by the second parameter acquired by the second acquiring unit. The packaging apparatus according to claim 1, wherein the film is moved by rotating the film roll.   After the guide part is moved by the guide part moving means and after the movement of the film in the first direction by the first moving means is finished, the other part of the film is moved by the second adhesive means. A second movement control means for moving the film in a second direction opposite to the first direction by the movement mechanism for at least a part of time before adhering the film to the pedestal is provided. Item 12. The packaging device according to any one of Items 1 to 11. A housing having an internal space in which at least a part of the transport path and the guiding portion are disposed;
Along the first position between the movement path and the outside of the housing among the conveyance paths, the arrangement is arranged substantially parallel to the height direction of the article conveyed by the conveyance mechanism, A plurality of first sensors capable of detecting opposing objects at different height-wise positions;
Sensor determination means for determining which of the plurality of first sensors can face the pedestal or the article;
Based on the determination result by the sensor determination means, a sensor selection means capable of selecting, from the plurality of first sensors, a foreign object sensor used to detect a foreign object that is an object different from the pedestal and the article;
The packaging apparatus according to claim 1, further comprising a foreign matter determination unit that determines whether the foreign matter has been detected based on a detection result by the foreign matter sensor selected by the sensor selection unit. Comprising position specifying means for specifying the position of the pedestal being transported by the transport mechanism;
The sensor selection means includes
When the position of the pedestal specified by the position specifying means is the first position, the foreign matter sensor is selected based on a determination result by the sensor determination means,
The packaging device according to claim 13, wherein when the position of the base specified by the position specifying means is different from the first position, all of the plurality of first sensors are selected as the foreign matter sensors. . The sensor determination means determines a target sensor that is the first sensor at the position in the height direction that can face the pedestal or the article among the plurality of first sensors,
The sensor selection unit selects, as the foreign matter sensor, all of the first sensors having a larger position in the height direction than the target sensor determined by the sensor determination unit among the plurality of first sensors. The packaging device according to claim 14. Along the second position between the movement path and the outside of the housing, the second transfer path is arranged in parallel with the height direction, and faces each other at different height positions. A plurality of second sensors capable of detecting an object to be
The first position is on the downstream side with respect to the movement path;
The second position is on the upstream side with respect to the movement path,
The sensor determination means determines which of the plurality of first sensors is at a position in the height direction that can face the pedestal or the article based on detection results of the plurality of second sensors. The packaging apparatus according to claim 13. Comprising position specifying means for specifying the position of the pedestal being transported by the transport mechanism;
The sensor selection means selects all of the plurality of second sensors as the foreign matter sensor when the position of the pedestal specified by the position specifying means is a position away from the second position to the upstream side. The packaging apparatus according to claim 16, wherein A housing having an internal space in which at least a part of the transport path and the guiding portion are disposed;
A detection means provided along a predetermined position on the transport path, capable of detecting an object at the predetermined position;
The predetermined position is on the upstream side with respect to the movement path;
The detection means includes a plurality of sensors arranged in parallel with the height direction of the article conveyed by the conveyance mechanism and capable of detecting objects facing each other at different positions in the height direction,
Each of the plurality of sensors is disposed opposite to the height direction and the width direction orthogonal to the transport direction across the transport path, and receives light and outputs a signal corresponding to the amount of light received And a light emitting unit that emits light toward the light receiving unit,
The width direction includes a third direction and a fourth direction that are different from each other,
Among the plurality of sensors, in the first sensor and the second sensor, which are any two of the sensors adjacent in the height direction, the light emitting unit of the first sensor and the light receiving unit of the second sensor are: The light receiving part of the first sensor and the light emitting part of the second sensor are provided side by side in the height direction on the third direction side of the transport path, and the light emitting part of the second sensor is on the fourth direction side of the transport path. The packaging apparatus according to claim 1, wherein the packaging apparatus is provided side by side in the height direction. The housing has an opening for allowing the pedestal and the article to be conveyed by the conveyance mechanism to enter the internal space,
The packaging device according to claim 18, wherein the plurality of sensors include the sensor in which the light receiving unit and the light emitting unit are arranged along a lower end of the opening. A light emission control means for emitting light from the plurality of light emitting units included in the detection means;
The packaging device according to claim 18 or 19, wherein the light emission control means causes at least the light emitting unit of the first sensor and the light emitting unit of the second sensor to emit light at different timings.   21. The packaging device according to claim 20, wherein the light emission control unit sequentially causes the plurality of light emitting units to emit light in a predetermined order.

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