JP6075098B2 - Packaging equipment - Google Patents

Description

  The present invention relates to a packaging device.

A top-seal type packaging device is known as a packaging form for reducing the amount of waste by reducing the amount of films and containers (see, for example, Patent Document 1).
The packaging apparatus described in Patent Document 1 has a carry-in unit that carries a base material on which an article to be packaged is placed into a heat station in the packaging apparatus. The carry-in unit includes a horizontal placing part configured by a flat plate on which an article to be packaged is placed, and a frame so as to surround the flat plate in a U-shape in plan view.

JP 2012-46230 A

By the way, for example, what provided the measuring part which measures the weight of a to-be-packaged object, the label issuing part according to the weight, etc. in the packaging apparatus of patent document 1 is desired. In addition, in the packaging device described in Patent Document 1, there is also a demand for a weighing mode function that measures the weight of an article and issues a label corresponding to the weight without packaging the article.
However, in the packaging device described in Patent Document 1, when a weighing scale for weighing the weight is simply provided at the lower portion of the horizontal loading portion of the carry-in portion, the weight of the article larger than the interval between the frames is measured. There is a possibility that an accurate measurement cannot be performed because an article touches the frame.

  Further, when a packaging device is provided with a weighing mode function, a packaging device that can easily switch between a weighing mode and a normal packaging mode is desired.

  The present invention has been made in view of the above-described problems, and in a packaging device including a weighing unit, provides a packaging device capable of expanding the article placement area of the weighing unit in the weighing mode, and the weighing mode and normal packaging. An object of the present invention is to provide a packaging device capable of easily switching between modes.

The packaging device of the present invention is a packaging device for packaging an article with a film drawn from a film roll, and includes a weighing unit, a first placement unit provided on the weighing unit, and the first placement. A packaging part that wraps the article placed on the part with a film, a second placement part that is provided on the weighing part and is movably formed so as to cover the first placement part , A conveyance unit that measures the article placed on the first placement unit by the weighing unit, and conveys the article placed on the first placement unit into a packaging device, and the conveyance unit The movable cover member is provided at an end on the upstream side in the transport direction and is configured to be switchable between a closed state that covers an upper portion of the second placement portion and an open state that exposes the second placement portion. A cover open / close detection unit that detects an open state or a closed state of the movable cover member; A bell issuing unit and a control unit, wherein the weighing unit weighs the weight of the article placed on the second placement unit, and outputs a weighed weight value. When the open state is detected by the cover open / close detection unit, the label issuing unit determines whether the label is issued based on the weight of the article placed on the second placement unit, which is measured by the weighing unit without performing the packaging process. The weighing mode is set to perform a process for issuing a label .

  In the packaging apparatus, the second placement unit is formed movably on the first placement unit for performing the packaging operation, and when only the weighing of the article is performed, the packaging operation is not performed. The article is placed on the second placement unit, and only the weighing operation is performed by the second placement unit.

  ADVANTAGE OF THE INVENTION According to this invention, in a packaging apparatus provided with a measurement part, the packaging apparatus which can expand the article mounting area | region of a measurement part at the time of the measurement mode by a 2nd mounting part can be provided. In addition, according to the present invention, it is possible to provide a packaging device that can easily switch between the weighing mode and the normal packaging mode.

It is an external appearance perspective view which shows an example of the packaging apparatus which concerns on embodiment of this invention, and is a figure which shows an example of a closed state of a cover member. It is an external appearance perspective view which shows an example of the packaging apparatus which concerns on embodiment of this invention, and is a figure which shows an example of a cover member in an open state. The side view which shows the outline of the packaging apparatus which concerns on embodiment of this invention. The figure which shows an example of operation | movement of the packaging apparatus which concerns on embodiment of this invention, (a) is a figure which shows an example of the state which wraps articles | goods by a packaging part, (b) is an example of the state which discharges a package to a discharge means FIG. The longitudinal section showing an example of the heat part etc. of the packaging device concerning the embodiment of the present invention. It is a figure which shows an example of the weighing pan part of the packaging apparatus which concerns on embodiment of this invention, a cover member of a closed state, etc., (a) is the top view, (b) is the side view, (c) is a weighing pan. FIG. It is a figure which shows an example of the weighing pan part of the packaging apparatus which concerns on embodiment of this invention, an open cover member, etc., (a) is the top view, (b) is the side view. The figure which shows an example of the electrical constitution of the packaging apparatus which concerns on embodiment of this invention. The flowchart which shows an example of operation | movement of the packaging apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the weighing pan part of the packaging apparatus which concerns on other embodiment of this invention, a cover member of a closed state, etc., (a) is the top view, (b) is the side view. It is a figure which shows an example of the weighing pan part of the packaging apparatus shown in FIG. 10, an open cover member, etc., (a) is the top view, (b) is the side view. It is a figure which shows an example of the packaging apparatus which concerns on the modification of this invention, (a) is a side view which shows an example, such as a weighing pan part and a cover member of a closed state, (b) is a cover of a weighing pan part and an open state The side view which shows an example of a member.

  A packaging device according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view showing an example of a packaging device 100 according to an embodiment of the present invention, and shows an example of a closed state of a cover member. FIG. 2 is an external perspective view showing an example of the packaging device 100, and shows an example of an open state of the cover member. FIG. 3 is a side view illustrating the outline of the packaging device 100.

  FIG. 4 is a diagram illustrating an example of the operation of the packaging device 100 according to the embodiment of the present invention. Specifically, FIG. 4A is a diagram illustrating a state in which an article is packaged by the packaging unit, and FIG. 4B is a diagram illustrating a state in which the package is discharged to the discharge means. FIG. 5 is a vertical cross-sectional view showing an example of the heat unit and the like of the packaging device 100.

  FIG. 6 is a view showing an example of the weighing pan 91 and the closed cover member 95 of the packaging device 100 according to the embodiment of the present invention. Specifically, FIG. 6 (a) is a top view thereof, FIG. FIG. 6B is a side view of the weighing pan 91. FIG. FIG. 7 is a view showing an example of the weighing pan 91 and the cover member 95 in the open state of the packaging apparatus 100 shown in FIG. 6, and FIG. 7 (a) is a top view thereof and FIG. ) Is a side view. FIG. 8 is a diagram illustrating an example of an electrical configuration of the packaging device 100 according to the embodiment of the present invention.

  The packaging device 100 according to the embodiment of the present invention wraps an article with a film 6 a drawn from the film roll 6. The packaging device 100 includes a weighing unit 80, a concave placement unit 90 (first placement unit) provided on the weighing unit 80, and an article W placed on the placement unit 90 by the weighing unit 80. A weighing unit 30 for weighing and conveying the article W placed on the placing unit 90 into the packaging device 100, a packaging unit 70 for packaging the article conveyed by the conveyance unit 30 with a film, and a printing unit 81a. The label issuing unit 81 that issues a label L printed according to the weight weighed by the measuring unit 80, and the loading unit 90 on the upstream end in the transport direction of the mounting unit 90. A flat weighing pan 91 (second placement portion) that can expand and contract the placement area of the article W, a control portion 75 (CPU), and the like. When an article is placed on the weighing pan 91, the control unit 75 sets the weighing mode and performs a process of causing the label issuing unit 81 to issue a label L on which printing has been performed according to the weight of the article W.

  Hereinafter, a packaging device 100 (heat seal packaging device) according to an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 8, the packaging apparatus 100 covers a stretch film 6 a on a flat base material 12 on which an article W (also referred to as an article to be packaged) is placed, and the outer side of the article W to be packaged. The film edge is heat-welded to the surface of the base material and sealed. The packaging device 100 according to the embodiment of the present invention is an electric drive type that performs a pulling operation of the film 6a to be placed on the packaged object W, an up / down operation of sealing processing, and the like by motor driving.

  Specifically, the packaging device 100 supports and holds the base material 12 on which the article W to be packaged is placed on the base 1, and a heater receiving portion corresponding to the heater at a peripheral position corresponding to the periphery of the base material 12. The base material receiving means 2 having the above, the transporting portion 30 including the movable projecting piece 30a for transporting the base material 12 on which the article to be packaged W is placed to the base material supporting means 2, and the article to be packaged on the base material 12 A film roll placement section 5 for feeding out the film 6a to be covered with W, a film feed means 7 for drawing out the film 6a from the film roll 6 placed in the film roll placement section 5 for a predetermined length, and a film 6a drawn by the film feed means 7 The holding means 8 or the base material holder so that the packaging material W on the base material 12 is covered with the holding means 8 that stretches and holds above the material mounting means 2 and the film 6a that the holding means 8 sucks and holds. Moving means 9 for relatively moving 2, a heater section 10 for thermally welding the edge of the film 6 a covering the article W to be wrapped to the surface of the base material 12 on which the article W to be packaged is placed, and the edge of the film 6 a , A discharge means 11 for discharging the package W ′ thermally welded to the periphery of the base material 12 to the outside of the packaging apparatus 100, and the like.

  The base material 12 placed on the base material mounting means 2 and the film 6a are thermally welded by the heater unit 10 positioned above. That is, the space above the base material placing means 2 corresponds to a heat station for film-wrapping the article W.

  The base material mounting means 2 is a rectangular in plan view formed of a metal material so that the base material 12 and the article W to be packaged are raised and have a strength that does not deform even when pressed against the heater portion 10 located above. It has a shaped platform 2a. For example, the rectangular platform 2a is formed in accordance with a large-size base material corresponding to two types of base materials of different sizes (large and small, with the same horizontal dimensions and different vertical dimensions), and the upper surface thereof. The entire surface is covered with a flat plate.

A heater receiving portion made of a heat-resistant member such as silicon rubber is attached to a surface corresponding to the heater portion 10 on the surface of the mounting base 2a so that the film 6a can be stably welded to the base material 12. It is configured. The upper surface of the base material mounting means 2 may be configured in a frame shape corresponding to the outer peripheral edge of the two types of base materials 12 without covering the entire surface with a plate member.
The base material placing means 2 is supported by a moving means 9 so as to be vertically movable between a heater portion 10 disposed above and a discharging means 11 on the base 1.

The moving means 9 has a horizontal receiving position (intermediate position) for placing the base material 12 on the upper position from the initial position from the downward inclined state at the initial position (lower limit position). Further, in the horizontal state in which the base material 12 is mounted, the base material 12 is pressed against the upper heater unit 10 to be raised and lowered between the welding position (upper limit position) where the film is thermally welded to the base material. As for the moving means 9, the support shaft 13 penetrates the width direction and is horizontally supported by the substantially middle position of the depth dimension of the mounting base 2a. Both ends of the support shaft 13 are attached to a sliding body 15 that moves up and down along a guide column 14 that is erected and fixed on the base 1 so as to sandwich the base material mounting means 2 therebetween.
The sliding body 15 is connected to the end of a first link rod 18 attached to the tip of a pair of left and right arms 17 that are pivotally supported at one end on a machine frame 16 standing and fixed on the base 1. The base material mounting means 2 is configured to be movable up and down along the guide column 14 by the vertical movement of the arm 17.

  The position detection (initial position, horizontal receiving position, welding position) of the mounting base 2a of the base material mounting means 2 is performed by a flag or the like (not shown) attached to the sliding body 15, a lower position sensor attached to the machine frame 16, It is configured to be detected by blocking the middle position sensor and the upper position sensor.

  The platform 2a of the base material mounting means 2 mounts the package W ′ that has been heat-sealed and descends in a horizontal state, but the machine frame 16 arranged on the base 1 in the middle of the descending When the rear portion of the platform 2a comes into contact with the portion 16 ′, the posture is forcibly changed to a downwardly inclined state and lowered. On the contrary, when the base material mounting means 2 moves upward from the initial position, the platform 2a is released from contact with the part 16 'of the machine frame 16, so that the posture of the platform 2a is horizontal. It will be in the state which can receive the base material 12 on which the to-be-packaged goods W were mounted.

The transport unit 3 (carry-in unit) includes a frame 3c that surrounds the substantially flat plate-like placement unit 90 in a U-shape in plan view.
The transport unit 3 (carry-in unit) that supplies the base material 12 on which the article to be packaged W is placed to the mounting base 2a of the base material mounting means 2 has a movable protrusion 30a. The movable projecting piece 30a is movable between an initial position where the article to be packaged is placed and a position on the platform 2a of the base material placing means 2. In the present embodiment, the movable protrusions 30a are provided on the endless belt at predetermined intervals. The endless belt provided with the protruding piece 30a is rotationally driven by a drive unit (not shown) such as a drive motor. In the packaging mode, the control unit 75 rotates the endless belt by the drive unit, thereby moving the movable protrusion 30a in the transport direction, and placing the tray of the specified size on which the article W is placed in the packaging device. Transport. Moreover, the control part 75 controls so that the movable protrusion 30a is not moved at the time of packaging mode.
Specifically, when the movable projecting piece 30 a moves forward to a position immediately before the mounting base 2 a of the base material mounting means 2, the base material 12 placed on the mounting portion 90 is placed on the base material mounting means 2. Move on the platform 2a.

  Under the control of the control unit 75, the article W on the placement unit 90 is moved in the transport direction by the movable protrusion 30a, the moving means 9 is activated, and the sliding body 15 is raised along the guide column 14 to be placed. It stops temporarily at a position that is in the same horizontal plane as the portion 90. Then, the article W on the placement unit 90 is transferred to the upper surface of the mounting base 2a of the base material mounting means 2 by the movable protrusion 30a.

  The film roll placement unit 5 feeds out the film 6 a to be put on the base material 12 transferred to the mounting base 2 a of the base material mounting means 2. In detail, the film roll arrangement | positioning part 5 is arrange | positioned on the cradle constructed on the machine frame 16 standingly fixed on the base 1, and it set to the film roll arrangement | positioning part 5 under the film roll arrangement | positioning part 5. The film feed means 7 for pulling out the film 6a from the film roll 6, the holding means 8 for horizontally stretching and holding the film 6a drawn by the film feed means 7, and the base material loading means 2 are lifted to contact the base material 12. A heater unit 10 for thermally welding the contacted film 6a to the base material 12 is provided.

The film roll placement unit 5 includes a pair of side plates fixed upright on a cradle, and two support rods 34 and 34 that are erected at a predetermined interval. The film roll 6 is slidably mounted on the rotating roller 35 of the book.
One roller is rotatable and the other roller is rotated synchronously with the guide roller 37 to feed out the film. In addition, the support structure of the film roll 6 in the film roll arrangement | positioning part 5 is not restricted to the support structure by the rotating roller 35 of illustration, The general support structure supported through a shaft in the center hole of the film roll 6 may be sufficient.

Further, between the side plates, a shaft 36 is installed below the film roll arrangement portion 5, and a guide roller 37 for guiding the film 6 a connected to the film roll 6 in the pulling direction is electromagnetically braked (illustrated) on the shaft 36. It is attached via (omitted).
That is, when the film tip clamp portion 45 of the film feed means 7 grips the film 6a and feeds the film 6a, the electromagnetic brake is turned off, the guide roller 37 rotates, and the film 6a is fed.
Further, when the film leading end clamp portion 45 moves to grab the waiting film 6a, the electromagnetic brake is turned on and the guide roller 37 does not rotate.
In addition, toothed pulleys 39 and 40 are respectively fixed to the shaft ends of the shaft 38 that is rotatably mounted on the shaft end of the shaft 36 and the end opposite to the cradle. The toothed belt 41 is wound around, and the shaft 38 is configured to rotate using the rotational force of a film feed motor 46c (for example, a stepping motor) of the film feed means 7.
The toothed belt 41 is connected to a film leading end clamp portion 45 of the film feed means 7 so that the film leading end clamp portion 45 reciprocates as the toothed belt 41 rotates forward and backward.

  An intermediate guide roller 42 is rotatably supported across the side plate between the guide roller 37 and the film roll placement portion 5, and the leading end of the film 6 a is guided on the shaft that supports the intermediate guide roller 42. A guide plate 43 that is wound around the peripheral surface and protrudes forward from the lower surface of the guide roller to be in an initial set state is rotatably attached.

  A film feed means 7 for holding the tip of the film 6a and pulling out the film 6a along the lower surfaces of the holding means 8 and the heater part 10 includes a film tip clamp part 45 for holding the tip of the film 6a, and a film tip clamp part thereof. The drive unit 46 is configured to reciprocate 45 along the holding unit 8 and the heater unit 10.

  The guide inclined plate 48 is movable so that the film front end clamp part 45 moves forward along the lower surfaces of the holding means 8 and the heater part 10 so as to sandwich the front end of the film 6a, and is closed at a position immediately before the end of the forward movement. The lower plate is forced to open against the spring force. The film front end clamp part 45 clamps the film 6a when it changes from the open state to the closed state.

As shown in FIG. 3, the drive unit 46 that reciprocates the film front end clamp unit 45 is slid on two guide shafts 46a arranged from the front end to the rear end on the left and right side surfaces of the cradle, and the guide shaft 46a. The sliding frame 46b that is movably mounted, the toothed belt 41 that is rotatably arranged, and the film feed motor 46c that drives and rotates the toothed belt 41. The sliding frame 46b is a toothed belt 41. It is connected to the lower side (return side). And the both sides of the fixed upper plate of the film front end clamp part 45 are connected and fixed to the lower surfaces of the left and right sliding frames 46b.
As a result, when the film feed motor 46c (for example, a stepping motor) is driven and rotated, the toothed belt 41 is rotated, and the sliding frame 46b slides along the guide shaft 46a by the rotation of the toothed belt 41. The film end clamp part 45 connected to each sliding frame 46b is also slid.
During forward movement (forward movement), the leading edge of the film 6a is clamped by the opening / closing operation of the film leading edge clamp section 45, and during backward movement (backward movement), the film leading edge clamp section 45 moves backward while holding the leading edge of the film 6a. The amount of film (length) required for packaging can be withdrawn.

  The length of the film pulled out by the film feed means 7 is determined by the size of the base material 12 on which the article W to be packaged is placed. The size of the base material 12 is determined by the base material 12 on the platform 2 a of the base material mounting means 2. It is detected by the detection means when it is placed, and is controlled based on the detection information.

  Further, the film leading end side pulled out by the operation of the driving unit 46 by the film leading end clamping unit 45 of the film feeding means 7 is still held by the film leading end clamping unit 45, but the pulled out predetermined length. In order to thermally weld the film 6a to the base material 12 and take out the packaged product, it is necessary to release the adhesion by the film end clamp portion 45. In this embodiment, the release mechanism is disposed on the side opposite to the side on which the guide inclined plate 48 is attached. Description of the release mechanism is omitted.

The film 6 a having a predetermined length drawn by the operation of the film feed means 7 is stretched and held substantially horizontally by the holding means 8. As shown in FIG. 5, the holding unit 8 includes a double box frame 50 formed by an outer box 51 and an inner box 52, and an electric fan 53 that generates a suction force in a space formed by the double box frame 50. It consists of
The outer box 51 constituting the double box frame 50 is a box body having a rectangular shape in plan view, with the upper surface and three of the four side walls being closed, and the lower surface and one of the side walls being open. The partition wall is movably disposed in the open portion while maintaining an airtight state.
In addition, a fan mounting hole is formed on the upper surface of the outer box 51, and an electric fan 53 is mounted in the fan mounting hole. The electric fan 53 is configured to generate a negative pressure in the double box frame 50. Yes.

  The inner box 52 is fitted with box frames 52a and 52b in which three of the upper surface and four side walls are closed and the lower surface and one side of the side wall are opened, with the opened side surfaces facing each other, It is configured to be possible. The combined box frames 52a and 52b fit into the outer box 51, and one box frame 52a can move in the vertical direction while maintaining a certain distance (gap) from the three side walls of the outer box 51. It is supported by.

  The other box frame 52b is connected and supported so as to be movable in the vertical direction while maintaining the same gap (gap) as the gap (gap) formed between the outer box 51 and the box frame 52a between the other box frame 52b. Yes.

  The space (gap) defined by the side wall and partition wall of the outer box 51 and the side wall of the inner box 52 (box frames 52a and 52b) is the suction part 8a of the holding means 8 that stretches and holds the film 6a. Moreover, the lower end surface of one box frame 52b constituting the inner box 52 is bent outward and upward to form a separation piece (separation means). When this separating piece (separating means) protrudes downward from the lower end surface of the outer box 51 by a downward urging force by an elastic member, which will be described later, the film adhering to the heater portion (thermal welding to the base material) is directed downward. Press down and release the film from the heater surface.

  The box frame 52b of the inner box 52 and the partition wall are joined with a certain distance (gap) therebetween, and the heater unit 10 is attached to the lower end of the partition wall. For this reason, the suction part 8a formed by the movable heater part 10, the partition wall / outer box 51, and the inner box 52 (box frames 52a, 52b) has the size of the base material while maintaining the initial positional relationship. Accordingly, the position of the heater portion can be moved.

Further, the inner box 52 of the double box frame 50 constituting the holding means 8 is supported so as to be movable in the vertical direction with respect to the outer box 51. As shown in FIG. 5, the support structure is such that the bracket 61 is fixed to the side wall and the partition wall of the outer box 51, while the guide rods 62 are raised on the upper surfaces of the box frames 52 a and 52 b constituting the inner box 52. The guide rod 62 is fixedly inserted into the corresponding bracket 61 so as to be movable up and down, and a downward force is applied to the guide frames 62 on the box frames 52a and 52b.
The inner box 52 is slightly below the lower surface (the surface on which the film is heat-welded) of the heater portion where the lower end of the inner box 52 is attached to the lower end of the outer box 51 in the initial state (the state before sucking and holding the film 6a). When the base material 12 is pressed against the film 6a by the ascent of the base material mounting means 2, the external force causes the inner box 52 to be substantially flush with the lower surface of the heater portion (the film When the external force is released by the lowering of the base material mounting means 2 upon completion of the heat seal, it is pushed down to the initial position by its own weight.

  Further, as shown in FIG. 5, through holes 64 communicating with the inside of the outer box 51 are formed on the left and right side walls along the film width direction of the outer box 51 constituting the holding means 8 (suction means). . A cover 65 that covers the through-hole 64 in an open state is attached to the outside of the outer box 51 to form an auxiliary suction part 65a. Even when the film 6a pulled out from the film roll 6 is pulled out of the film in the width direction, the auxiliary suction part 65a can reliably hold the film 6a by suction.

A heater portion 10 is formed outside the suction portion 8a of the holding means 8 so as to surround the suction portion 8a. The heater unit 10 has a resistance wire (for example, nichrome wire) and is disposed at the lower end of the outer box 51 of the holding means 8 and the lower end of the partition wall. In addition, the upper surface side (the side opposite to the surface in contact with the film) of the heater unit 10 is covered with a heat insulating material, and is configured so as not to be burned or the like even if a finger is accidentally contacted.
Moreover, the heater part 10 is arrange | positioned at the lower outer surface of the outer box 51, and the lower outer surface of a partition wall so that it can heat-seal along four sides of the base material of a substantially rectangular shape in planar view. In addition, when the heater part 10 corresponding to each side is independently divided, the corner parts are also thermally welded by connecting the end parts of the heater parts with metal conductors 66 at the corner parts. You may do it.

  Further, a cutter (not shown) for cutting the film 6a drawn by the operation of the film feed means 7 is provided between the guide roller 37 and the outer box 51 of the holding means 8 provided with the suction part 8a and the heater part 10. Has been placed. The cutter is configured so as to cut the film 6 a that is covered with the packaged object W and is thermally welded to the periphery of the base material 12.

The package W ′ that has been heat-sealed by the heater unit 10 is discharged from the platform 2 a of the base material mounting means 2 to the discharge means 11. Specifically, a drive roller (motor drive) is disposed between the platform 2a and the slope, and the drive roller is configured to rotate in accordance with the timing of discharging the package W ′.
The discharge means 11 is disposed at a position almost directly below the transport unit 30 that supplies the base material 12 on which the article W to be packaged is placed to the mounting base 2a of the base material mounting means 2, and the package W ′ that has completed the heat seal packaging. Is received from the platform 2a of the base material mounting means 2 and discharged out of the apparatus. Specifically, the discharge means 11 is formed by bending a metal plate 11a having a substantially rectangular shape in plan view into a slope shape. Further, the discharging means 11 is arranged so that the slope-shaped metal flat plate 11a is substantially continuous with the inclination of the mounting base 2a in front of the lower limit position of the mounting base 2a of the base material mounting means 2 (front side of the apparatus). It has a structure. The package W ′ is discharged to the discharge means 11 by gravity due to the inclination of the platform 2 a of the base material mounting means 2, slides down by gravity by the slope of the discharge means 11, and is automatically discharged outside the packaging apparatus 100. . The metal flat plate 11a constituting the discharging means 11 has a surface treatment (rib (protrusion) processing for reducing frictional resistance, Teflon (registered trademark) processing, etc.) for promoting sliding of the package W 'on the surface thereof. You may give it. The metal flat plate 11a is provided with a product discharge sensor that detects the package W ′ that is slid and discharged on the metal flat plate 11a.

The base material 12 used for heat-sealing packaging is a laminate in which a flat paper base material, a resin base material (for example, a film base material, a foamed resin base material, etc.), a thin wooden base material, or different materials are bonded together. Any of the prepared base materials may be used. In addition, when a material that is difficult to thermally weld the film is employed as the base material 12, a surface treatment (resin lamination, coating treatment, etc.) that enables thermal welding is performed on the material. This surface treatment should have a slightly lower melting point than the film 6a used for packaging, and the central portion may not be subjected to surface treatment. That is, the surface treatment may not be performed on the portion where the article W is placed. The surface of the base material 12 may be plain (white). Further, as the base material 12, the product may be made conspicuous by using a colored material or a pattern printed according to the product to be placed.
The base material 12 may have some unevenness on the upper surface. For example, a convex portion is provided at the position of the upper surface of the base material corresponding to the heater portion 10, and the convex portion and the heater portion 10 are in contact with each other with the film 6a interposed therebetween, so that the sealing property (thermal welding) of the film 6a is enhanced. It may be.

  In addition, the base material 12 is selected and used in a plurality of types having different sizes (length dimensions along the film drawing direction) according to the size of the article W to be placed. The packaging device 100 detects the size of the base material 12 by a detection means (not shown).

<Weighing pan 91>
As illustrated in FIGS. 6 and 7, the packaging device 100 includes a weighing unit 80, a placement unit 90 provided on the weighing unit 80, and an article W placed on the placement unit 90. And is provided on the transport unit 30 for transporting the article W placed on the placement unit 90 into the packaging device 100 and the end of the placement unit 90 on the upstream side in the transport direction. A weighing pan 91 that is connected to the end of the mounting portion 90 and that allows the mounting area of the article W to be expanded and contracted.
Further, the packaging device 100 is provided at the end of the transport unit 30 on the upstream side in the transport direction, and is configured to be switchable between a closed state that covers the upper part of the weighing pan 91 and an open state that exposes the weighing pan 91. The movable cover member 95 is provided.

  Specifically, as shown in FIGS. 6A and 6B, the transport unit 30 is formed in a shape protruding from the main body of the packaging device 100 toward the front side, and is a substantially flat mounting unit. A frame 3c is provided that surrounds 90 in a U-shape in plan view. In the present embodiment, a weighing unit 80 such as a load cell 80 a serving as a weight detection unit is provided at the center bottom of the transport unit 30. In the present embodiment, as shown in FIG. 6C, the placement unit 90 and the weighing pan 91 are detachably provided on the weighing unit 80. Moreover, in this embodiment, the mounting part 90 and the weighing pan part 91 are comprised integrally.

  As shown in FIGS. 6 and 7, in the present embodiment, the weighing pan 91 includes a flat plate-like main body 91h disposed on a load cell 80a as a weight detection unit of the weighing unit 80, and a main body 91h. A fixed plate portion 91a provided on the fixed plate portion 91 and a movable plate portion 91c provided on the fixed plate portion 91a so as to be foldable by a hinge mechanism 91b.

  In the normal packaging mode, as shown in FIG. 6, the movable dish 91c is in a state of being folded with respect to the fixed dish 91a, and the placement area of the articles W on the weighing dish 91 is relatively small.

  In the weighing mode, as shown in FIG. 7, the movable dish 91 c is rotated by 180 ° about the hinge mechanism 91 b provided at the end of the fixed dish 91 a as the rotation axis, thereby the end of the movable dish 91 c. A claw portion 91d having a bent shape is provided. The movable dish part 91c is configured such that the claw part 91d abuts on the plate-shaped main body part 90a with the movable dish part 91c opened, and the movable dish part 91c and the fixed dish part 91a are substantially horizontal. ing.

Further, as shown in FIG. 6, the movable cover member 95 has a substantially rectangular parallelepiped main body portion 95 a that is opened in the conveyance direction, and a shape that extends obliquely downward from the upper portion of the main body portion 95 a in the conveyance direction. And a hinge portion 95b. The hinge portion 95b is pivotally supported by the hinge mechanism 95c. As shown in FIG. 6, when the cover member 95 is closed, the collar portion 95b is configured so as to cover the movable plate portion 91c and the fixed plate portion 91a of the weighing plate portion 91 in the folded state.
Moreover, as shown in FIG. 7, when the cover member 95 is opened, the weighing pan 91 in a folded state is exposed.

  Further, in the present embodiment, as shown in FIG. 6, the cover member 95 is formed of a metal material, and the cover member 95 is closed and is conveyed by the magnetic force of the magnet 95m provided at the end of the conveyance unit. It has a structure that can be fixed by suction. Thus, the cover member 95 can be easily opened and closed by the operator's hand.

  Further, as shown in FIGS. 6 and 7, a cover open / close detection unit 82 for detecting the open state or the closed state of the movable cover member 95 is provided. The cover open / close detection unit 82 is provided in the vicinity of the end of the transport unit and is configured by a light detection sensor or the like. For example, a signal indicating that light is detected when the movable cover member 95 is opened is sent to the control unit 75. A signal indicating that light is not detected when the movable cover member 95 is closed is output to the control unit 75.

Further, as described above, the weighing pan 91 having the main body 91h, the fixed pan 91a, and the movable pan 91c is placed on the weighing portion 80 (FIGS. 6B and 6). (See (c)). For this reason, even if the movable dish part 91c is moved, the weight of the weighing dish part 91 is not changed. Even when the article W is placed on the weighing pan 91 in the weighing mode, or when the article W (packaged article) is placed on the main body 91h (placement portion 90) of the weighing pan 91 in the packaging mode. The weight of the weighing pan 91 is unchanged.
For this reason, if the measuring unit 80 performs the zero adjustment of the weighing pan 91, the control unit 75 performs the weighing based on the value by the zero adjustment in the packaging mode or the weighing mode. It can be carried out. That is, the packaging device 100 according to the embodiment of the present invention does not require zero adjustment again even when the packaging mode and the weighing mode are switched.
In addition, you may perform zero adjustment suitably.

<Electrical configuration of packaging apparatus 100>
As shown in FIG. 8, the packaging device 100 (heat seal packaging device) according to the embodiment of the present invention includes a control unit (CPU) 75, a RAM 76, a ROM 77, a film feed motor 46c, and a film release solenoid. 49c (electromagnetic solenoid), initial position sensor 49d, end point position sensor 49e, heater unit 10, fan 53, display unit 78, operation input unit 73, heater position drive motor 58, and film cut solenoid 68. And a platform drive motor 23, a weighing unit 80, a label issuing unit 81, a cover open / close sensor 82, a transport drive motor 83, and the like. Each component is electrically connected by a communication line 75 ′ such as a bus.

  The RAM 76 has a plurality of storage areas, and stores a film feed amount for each base material having a different size used for packaging, a packaging file for storing information on partition wall movement, and the like. When the size of the base material 12 is detected by the detection sensor that detects the product size, the control unit 75 (CPU) specifies information that defines the film feed amount and information that defines the movement of the partition wall. Temporarily stored in a predetermined area.

  The film feed motor 46c moves the film tip clamp portion 45 of the film feed means 7 in the film drawing direction, and the distance for moving the film tip clamp portion 45 is variable depending on the size of the base material 12 to be used. The As the film feed motor 46c, a stepping motor or the like can be employed.

The film release solenoid 49c is a solenoid that operates a release mechanism 49 that releases the holding of the film leading end clamp portion 45 that holds and pulls out the leading end of the film. The controller 75 controls ON / OFF of the film opening solenoid based on detection signals of the initial position sensor 49d and the end point position sensor 49e.
The heater position drive motor 58 is a motor that drives a ball screw mechanism that moves the partition wall of the holding means 8. The control unit 75 performs movement control of the heater position driving motor 58 based on data set in the product file.

  The platform drive motor 23 is a motor that operates a moving mechanism that moves the platform 2a of the base material placing means 2 up and down. The control unit 75 controls ON / OFF of a drive signal to the platform drive motor 23 based on detection signals of the lower position sensor, the middle position sensor, and the upper position sensor that detect the position of the platform 2a.

  The conveyance drive motor 83 is a motor that moves the movable protrusion 30a of the conveyance unit 30, and specifically, a motor that rotationally drives an endless belt provided with the movable protrusion 30a. When the control unit 75 detects that the article W to be packaged is placed on the placement unit 90 by the sensor (detection unit) to be detected in the packaging mode, the control unit 75 inputs a drive signal to the transport drive motor 83, The movable protrusion 30a is driven to move. The controller 75 does not drive the transport drive motor 83 during the measurement mode.

The control unit 75 (CPU) comprehensively controls each component of the packaging device 100. The control part 75 implement | achieves the function based on this invention by executing the control program, various data, etc. which were memorize | stored in memory | storage parts, such as RAM76 and ROM77.
Specifically, when an article is placed on the weighing pan 91, the control unit 75 performs a process of causing the label issuing unit 81 to issue a label printed according to the weight of the article W.

  Specifically, when the cover opening / closing detection unit 82 detects the open state of the cover member 95, the control unit 75 sets the weighing mode, sets the weighing mode, and weighs the article placed on the weighing pan unit 91 measured by the weighing unit 80. Based on the weight, the label issuing unit 81 issues a label L.

  Further, when the cover opening / closing detection unit 82 detects the closed state, the control unit 75 sets the packaging mode and the article W placed on the placement unit 90 (the main body 91h of the weighing pan 91) is measured. In addition to weighing by 80, the article W is conveyed into the packaging device 100 by the protruding piece 30a of the conveying unit 30, and the article W is packaged by the packaging unit 70 with the film 6a.

<Operation of packaging apparatus 100>
FIG. 8 is a flowchart showing an example of the operation of the packaging device 100 according to the embodiment of the present invention.

  In step S11, the control unit 75 performs an initial process. As an initial process, the control unit 75 executes, for example, a control program and initializes various parameters.

  In step S <b> 13, the control unit 75 determines whether or not it is detected that the cover member 95 is in an open state based on a signal from the cover open / close detection unit 82. Specifically, when the control unit 75 receives a signal indicating that the cover member 95 is open from the cover open / close detection unit 82, the control unit 75 proceeds to the process of step S <b> 31 and closes the cover member 95 from the cover open / close detection unit 82. When the signal indicating the state is received, the process proceeds to step S15.

  In step S15, the control unit 75 sets the packaging mode. In this case, the movable dish 91c of the weighing dish 91 is in a state of being folded with respect to the fixed dish 91a, and the cover member 95 is in a closed state.

  In step S <b> 17, the operator places the article W on the placement unit 90. In this case, the weighing pan 91 is accommodated in the weighing cover member 95 in the reduced state. When the control unit 75 detects that the article W has been placed on the placement unit 90 by a sensor (not shown), the control unit 75 performs a process of weighing the weight of the article W by the weighing unit 80, and the article from the weighing unit 80. The weight of the article W is acquired based on the signal indicating the weight of W.

  In step S <b> 19, the control unit 75 causes the label issuing unit 81 to print on the label L with a print corresponding to the weight of the article W, for example, a weight (kg), a price (yen) according to the weight, and the like. And issue a label L.

In step S <b> 21, the control unit 75 measures the weight of the article W using the weighing unit 80 as described above, and rotationally drives the endless belt including the movable protrusion 30 a of the conveyance unit 30 using the conveyance drive motor 83. The article W placed on the placement unit 90 is moved in the transport direction by the movable protrusion 30a, and the stage 2a of the base material placing means 2 is raised by the movement means, and the stage 2a is placed on the placement part. A process is performed in which the article W is stopped at a position equal to the height of 90 and the article W is moved from the placement unit 90 to the stage 2a by the movable protrusion 30a.
The control unit 75 drives the film feed means 7 to feed a predetermined film length, and cuts the film 6a into a predetermined film length by a cutter.
The control unit 75 sucks the film 6a with the holding unit 8 (suction unit), and stretches and holds the film 6a substantially horizontally on the lower surface of the holding unit 8 (suction unit). The suction is performed by rotating the electric fan 53 of the holding means 8 (suction means) to make the inside of the double box frame 50 have a negative pressure, and sucking into the suction part 8a formed by the outer box 51, the partition wall, and the inner box 52. A force is generated, and thereby the side edge in the width direction of the drawn film 6a and the four sides in the drawing direction are adsorbed.

The control part 75 performs the process which raises the mounting base 2a which mounted the base material 12 with a moving means. The ascending is stopped by stopping the operation of the platform drive motor 23 of the moving means by a flag (not shown) attached to the sliding body 15 blocking the upper position sensor. The rising stop of the platform 2a is a position where the surface of the base material 12 supported on the platform 2a is pressed against the periphery of the film stretched and held on the lower surface of the holding means 8 (suction means) (FIG. 4). (See (a)).
The base material 12 is pressed against the film 6a stretched and held on the lower surface of the holding means 8 (suction means) from below for a predetermined time to be heat-sealed (heat-welded).
The control unit 75 starts the descent of the platform 2a on which the package W ′ for which the heat seal packaging has been completed is moved toward the initial position by driving the moving means.

The control unit 75 lowers the platform 2a on which the package W 'is mounted to the lower limit position, the flag of the sliding body interrupts the platform lower position sensor, and turns on the platform drive motor 23.
The lowering of the mounting table 2a is converted into a posture inclined forward from the horizontal state to the discharging means 11 side by the contact with the tilt assisting member 16 'provided on the base after passing through the intermediate position.

The package W ′ is discharged to the discharge means 11 by the forward tilt of the mounting table 2a (see FIG. 4B). A product discharge sensor is arranged in the discharge means 11, and the package W ′ is detected and turned ON by the sensor, and is turned OFF after passing the sensor or when the package is removed from the discharge means 11.
In the illustrated embodiment, since the discharging means is formed in a slope that continues to the forward tilt of the mounting table 2a, the package W 'is discharged onto the discharging means by gravity when the mounting table 2a is lowered (FIG. 4).

  In step S23, the control unit 75 ends the series of processes when stopping the operation of the packaging device 100, specifically, when receiving an operation signal of a stop button, and otherwise, the control unit 75 proceeds to step S13. Proceed to processing.

In step S <b> 31, when the control unit 75 detects that the cover member 95 is open based on a signal from the cover open / close detection unit 82, the control unit 75 sets the measurement mode.
For example, when the cover member 95 is opened by the operator's hand or the like (see FIG. 7), the control unit 75 sets the measurement mode.

  In step S33, as shown in FIG. 7, with the operator's hand or the like, the claw portion 91d is opened by rotating the movable plate portion 91c of the weighing plate portion 91 to the conveying direction side and opened. The movable platen portion 91c and the fixed platen portion 91a are made to be substantially horizontal by being brought into contact with each other.

  Next, the operator places the article W on the weighing pan 91. When the article W is placed on the weighing pan 91, the weighing unit 80 measures the weight of the article W, and the control unit 75 determines the weight of the article W based on the signal indicating the measurement value from the weighing unit 80. The label issuing unit 81 issues a label L that is acquired and printed according to the weight of the article W. And the control part 75 progresses to the process of step S23.

<Other Embodiments of the Present Invention>
FIG. 10 is a diagram illustrating an example of a weighing pan and a closed cover member of the packaging device 100 according to another embodiment of the present invention. Specifically, FIG. 10A is a top view and FIG. 10B is a side view. FIG. 11 is a diagram illustrating an example of the weighing pan of the packaging device 100 illustrated in FIG. 10 and an open cover member. Specifically, FIG. 11A is a top view and FIG. 11B is a side view. The description of the same configuration and operation as in the above embodiment is omitted.

In this embodiment, as shown in FIGS. 10 (a), 10 (b), 11 (a), and 11 (b), the movable tray 91c of the weighing pan 91 is fixed in the packaging mode. It is arrange | positioned on the tray part 91a, and it is comprised so that the movable dish part 91c of the measurement dish part 91 may be moved to a conveyance direction as needed at the time of measurement mode. In this embodiment, no hinge mechanism is provided.
By doing so, as shown in FIG. 11, in the weighing mode, the movable dish 91c is slid from the fixed dish 91a to enlarge the placement area of the article W, and the article W is moved to the movable dish 91c. And the fixed dish portion 91a. In this case, a relatively large article W is placed on each of the movable dish 91c and the fixed dish 91a with a gap between the movable dish 91c and the fixed dish 91a as necessary. Thus, the large article W can be easily weighed.

<Modification>
FIG. 12 is a view showing an example of a packaging device according to a modified example of the present invention. Specifically, FIG. 12 (a) is a side view showing an example of a weighing pan and a closed cover member. b) is a side view showing an example of a weighing pan and an open cover member. The description of the same configuration and operation as in the above embodiment is omitted.

  The packaging device shown in FIG. 12 is configured to be able to expand and contract the article mounting area of the weighing pan 91 by switching between the open state and the closed state of the cover member 95.

  For example, as shown in FIG. 12 (a), the movable platen portion 91c is engaged with a claw portion 95d provided at the tip of the flange portion 95b of the cover member 95 with the cover member 95 closed. It is configured.

As shown in FIG. 12B, when the cover member 95 is in the open state, the movable platen portion 91c is moved in the transport direction and stopped at a position where it abuts against the stopper 99 provided at a predetermined position. In this state, the control unit 75 sets the measurement mode.
And the control part 75 sets to packaging mode by closing the cover member 95 in the state which moved the movable dish part 91c to the initial position on the fixed dish part 91a by the operator's hand.

As described above, the packaging device 100 according to the embodiment of the present invention wraps an article with the film 6 a pulled out from the film roll 6. The packaging device 100 includes a weighing unit 80, a placement unit 90 as a first placement unit provided on the weighing unit 80, and a packaging for packaging an article W placed on the placement unit 90 with a film 6a. And a weighing pan portion 91 as a second placement portion that is provided on the weighing portion 80 and is movably formed so as to cover the first placement portion, and the control portion 75. Measures the weight of the article W placed on the weighing pan 91 (second placement unit), and outputs the measured weight value to the display unit 78 or the like.
As described above, in the packaging device 100, the weighing pan 91 (second placement unit) is movably formed on the placement unit 90 for performing the packaging operation, and only the weighing of articles is performed. By placing the weighing pan 91 on the mounting portion 90, it becomes difficult for the operator (operator) to perform the packaging operation on the mounting portion 90, and the article is placed in the weighing pan 91 (second mounting) in the above state. By placing on the placing portion), only the weighing operation can be performed by the weighing pan portion 91 (second placing portion).

Moreover, the packaging apparatus 100 which concerns on embodiment of this invention detects that the weighing pan part 91 (2nd mounting part) was formed so that the mounting part 90 (1st mounting part) might be covered. A cover opening / closing sensor 82 as a detection unit and a control unit 75 are provided. The control unit 75 prohibits the packaging operation when the detection unit detects that the weighing plate unit 91 (second mounting unit) is formed so as to cover the mounting unit 90 (first mounting unit). Mode (weighing mode).
That is, in the packaging device including the weighing unit 80, the packaging device 100 capable of expanding the article placement area of the weighing unit 80 can be provided in the weighing mode in which only the weighing of the article is performed.
Further, when only the weighing is performed by the weighing pan 91, the control unit 75 can automatically enter the weighing mode based on the detection result by the detection unit, and can perform a process for prohibiting the packaging operation.

In addition, the packaging device 100 according to the embodiment of the present invention is further provided at the end of the transport unit 30 on the upstream side in the transport direction, and closes the upper portion of the weighing pan 91 and exposes the weighing pan 91. The movable cover member 95 is configured to be switchable between an open state and a cover open / close detection unit 82 that detects an open state or a closed state of the movable cover member 95. When the cover open / close detection unit 82 detects the open state, the control unit 75 causes the label issuing unit 81 to issue the label L based on the weight of the article placed on the weighing pan 91 measured by the weighing unit 80. When the measurement mode is set to perform processing and the closed state is detected by the cover open / close sensor 82 which is a cover open / close detection unit, the article W placed on the placement unit 90 is weighed by the measurement unit 80 and the transport unit 30 is also measured. The movable projecting piece 30a is used to convey the article into the packaging device, and the packaging unit 70 sets the packaging mode in which the article W is packaged with the film 6a.
For this reason, the packaging apparatus 100 which can switch easily between a measurement mode and a normal packaging mode can be provided.

Moreover, as shown in FIGS. 6 and 7, the packaging device 100 according to the embodiment of the present invention has a plate-like shape in which the weighing pan 91 is disposed on the weight detection unit 80 a such as a load cell of the weighing unit 80. It has a main body 90a, a fixed tray 91a provided on the main body 90a, and a movable tray 91c provided on the fixed tray 91a so as to be foldable by a hinge mechanism 91b. A claw portion 91d is provided at the end of the movable plate portion 91c. In a state where the movable dish 91c is opened, the claw part 91d is in contact with the flat plate-shaped main body 90a, and the movable dish 91 and the fixed dish 91a are configured to be substantially horizontal.
In this way, the movable tray 91c is closed by folding it on the fixed tray 91a, and the movable tray 91c is rotated 180 ° with respect to the fixed tray 91a as a rotation axis and opened. And the claw part 91d provided in the edge part of the fixed plate | board part 91a contact | abuts on the flat main body part 90a, The packaging apparatus 100 which can expand / shrink the area of the mounting area | region of articles | goods easily. Can be provided.
In addition, as described above, the weighing pan 91 is configured to be able to expand the article placement region in the transport direction as viewed from the operator, so that the operability is improved.

Further, in the weighing pan 91, the movable pan 91c is folded on the fixed pan 91a, and the movable pan 91c is covered by the closed cover member 95, so that the weighing pan 91 is compact. In this state, the cover member 95 can be accommodated.
In this case, since the movable dish 91c and the fixed dish 91a are covered by the cover member 95 in the packaging mode, the operator can be prevented from touching the movable dish 91c and the fixed dish 91a. In the mode, the weight of the article can be measured with high accuracy while conveying the article placed on the placement unit 90.

Further, when the operator causes the packaging device 100 to issue a label based on the weight measurement without performing film packaging on the article, the control unit 75 opens and closes the cover by opening the cover member 95. When the sensor 82 detects the open state of the cover member 95, processing for setting the weighing mode is performed. Then, the operator rotates the movable plate portion 91c with respect to the fixed plate portion 91a by 180 ° using the hinge mechanism 91b as a rotation axis, and the claw portion 91d is brought into contact with the flat plate-shaped main body portion 90a, thereby easily detecting the detection portion. Since the cover is covered, it is possible to prevent the operator from touching the movable dish 91c and the fixed dish 91a, and in the packaging mode, high accuracy is achieved while conveying the article W placed on the placing part 90. The weight of the article can be measured.

  Moreover, in the said embodiment, although the weighing pan 91 was provided in the cover member side before a conveyance part, it is not restricted to this form. For example, the weighing pan 91 may be provided on both sides or one side in the transport direction of the transport unit 30. In this case, the weighing pan 91 covers the mounting portion 90 which is the first mounting portion in the weighing mode, and the movable tray 91c can move to one side in the transporting direction of the transporting portion 30 in the packaging mode. Alternatively, the movable platen portion 91c may be configured to be movable on both the left and right sides in the conveyance direction of the conveyance unit 30.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention.
Further, the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose and configuration.
Moreover, the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.

As mentioned above, although embodiment of this invention was described, some or all of embodiment of this invention is described as the following additional remarks.
[Appendix 1]
A packaging device for packaging an article with a film drawn from a film roll,
A weighing unit;
A first placement unit provided on the weighing unit;
A packaging section for packaging the article placed on the first placement section with a film;
A second mounting portion that is provided on the weighing unit and is movably formed so as to cover the first mounting portion;
A packaging apparatus for measuring the weight of an article placed on the second placement unit and outputting the measured weight value.
[Appendix 2]
A detection unit for detecting that the second mounting unit is formed so as to cover the first mounting unit;
A control unit,
The control unit sets a mode for prohibiting a packaging operation when the detection unit detects that the second placement unit is formed to cover the first placement unit. The packaging apparatus according to 1.
[Appendix 3]
The packaging apparatus according to Supplementary Note 1 or Supplementary Note 2, wherein the first placement part has a concave shape, and the second placement part has a flat plate shape.
[Appendix 4]
A weighing unit that weighs the article placed on the first placement unit by the weighing unit, and transports the article placed on the first placement unit into a packaging device;
A movable cover member provided at an end of the transport unit on the upstream side in the transport direction and configured to be switchable between a closed state that covers an upper portion of the weighing pan portion and an open state that exposes the weighing pan portion;
A cover open / close detection unit for detecting an open state or a closed state of the movable cover member,
When the control unit detects the open state by the cover open / close detection unit, the control unit issues the label to the label issuing unit based on the weight of the article placed on the weighing pan unit measured by the weighing unit. When the closed state is detected by the cover open / close detection unit, the article placed on the placing unit is weighed by the weighing unit, and the article is placed by the transport unit. The packaging apparatus according to any one of appendices 1 to 3, wherein the packaging apparatus is set to a packaging mode in which the article is transported into the packaging apparatus and the article is packaged by the packaging unit.
[Appendix 5]
The weighing pan portion is a flat plate-like main body portion disposed on the weight detection portion of the weighing portion,
A fixed dish provided on the main body,
The packaging apparatus according to any one of appendices 1 to 4, further comprising a movable dish part that is foldable on the fixed dish part by a hinge mechanism.
[Appendix 6]
The packaging device according to any one of appendices 1 to 5, further comprising: a label issuing unit that issues a label printed by the printing unit according to the weight measured by the weighing unit.

DESCRIPTION OF SYMBOLS 1 Base 2 Base material mounting means 3 Conveyance part 6 Film roll 6a Film 8 Holding means 8a Suction part 9 Movement means 10 Heater part 11 Discharge means 12 Base material 30 Conveyance part 70 Packaging part 73 Operation input part 75 Control part (CPU) )
78 Display unit 80 Weighing unit 81 Label issuing unit 81a Printing unit 82 Cover open / close sensor (cover open / close detection unit: detection unit)
90 Placement part (first placement part)
91 Weighing pan (second mounting part)
91a Fixed pan portion 91b Hinge mechanism 91c Movable pan portion 91h Main body portion (main body portion of the weighing pan portion: placement portion)
DESCRIPTION OF SYMBOLS 95 Movable cover member 95a Main-body part 95b Gutter part 95c Hinge mechanism 100 Packaging apparatus W Article (packaged article)

Claims (4)

A packaging device for packaging an article with a film drawn from a film roll,
A weighing unit;
A first placement unit provided on the weighing unit;
A packaging section for packaging the article placed on the first placement section with a film;
A second placement unit that is provided on the weighing unit and is formed to be movable so as to cover the first placement unit ;
A weighing unit that measures the article placed on the first placement unit by the weighing unit, and that transports the article placed on the first placement unit into a packaging device;
Provided at the end of the transport unit on the upstream side in the transport direction, and configured to be switchable between a closed state that covers an upper portion of the second placement unit and an open state that exposes the second placement unit. A movable cover member;
A cover open / close detector for detecting an open state or a closed state of the movable cover member;
A label issuing department;
A control unit,
The weighing unit weighs an article placed on the second placement unit, and outputs a weight value obtained by weighing;
The control unit, when detecting the open state by the cover open / close detection unit, based on the weight of the article placed on the second placement unit measured by the weighing unit without performing the packaging process. The packaging apparatus is set to a weighing mode for performing a process of causing the label issuing unit to issue a label . When the control unit detects the closed state by the cover open / close detection unit, the control unit measures the article placed on the first placement unit by the weighing unit and packages the article by the transport unit. The packaging apparatus according to claim 1, wherein the packaging apparatus is set to a packaging mode in which the packaging unit performs a process of packaging the article with a film .   The packaging device according to claim 1 or 2, wherein the first placement portion is concave and the second placement portion is flat. The second placement unit includes a flat plate-shaped main body disposed on the weight detection unit of the weighing unit,
A fixed dish provided on the main body,
Packaging device according to any one of claims 1 to 3, characterized in that it comprises a movable tray section provided foldably by a hinge mechanism to the fixed pan.

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