JP5514580B2 - Packaging equipment - Google Patents

Description

  The present invention relates to a packaging device.

  Stretch wrapping machine that holds products in tension, presses products placed on the tray against the film from below, and folds the periphery of the film to the bottom side of the tray to wrap products with the film However, it is disclosed in, for example, Patent Document 1 below.

JP 2001-97309 A

According to the stretch wrapping machine disclosed in Patent Document 1, a product on which an article is placed on a tray is packaged with a film. However, due to the recent increase in environmental awareness of consumers, consumers are required to reduce the amount of garbage, so it is desired to realize a packaging form that does not use a tray. If a packaging form that does not use a tray is realized, the cost required for purchasing and managing the tray can be reduced, and it is not necessary to secure a storage place for the tray, which is also beneficial for the manufacturer.
The present invention has been made in view of such circumstances, and an object of the present invention is to obtain a packaging device capable of packaging an article without using a tray.

A packaging device according to a first aspect of the present invention is a packaging device for packaging an article using a packaging material, and a placement table for placing the article to be packaged on the placement table. A first packaging material conveying means for conveying the packaging material onto the mounting table before the article is placed; and the article placed on the first region of the packaging material on the placing table. Weighing means for weighing and transporting the packaging material in a state where the article is placed on the first area, over the second area of the packaging material in front of the first area, over the article A second packaging material transporting means that folds backward, and a sealing means that seals the edges of the folded first packaging material and the second region, and the weighing means further comprises Before the article is placed on the packaging material, the article is conveyed on the placing table by the first packaging material conveying means. It is characterized in weighing the weight of the packaging material was.

  According to the packaging device according to the first aspect, the second packaging material transporting unit transports the packaging material in a state where the article is placed on the first region, and the second packaging material transporting unit forwards the packaging material in front of the first region. Two areas are folded back beyond the article. And a sealing means seals the edge of the 1st area | region and 2nd area | region of the folded packaging material. Therefore, according to the packaging apparatus which concerns on a 1st aspect, it becomes possible to package articles | goods, without using a tray. As a result, the amount of waste discharged can be reduced for the consumer, and the cost required for the purchase and management of the tray can be reduced for the manufacturer, and it is not necessary to secure a storage location for the tray.

Further , according to the weighing device according to the first aspect, the weighing means measures the weight of the packaging material before the article is placed on the packaging material, and the article after the article is placed on the packaging material. Weigh the weight. Therefore, by subtracting the measurement value before placing the article from the measurement value after placing the article, the weight of the article itself not including the weight of the packaging material can be obtained accurately.

A packaging device according to a third aspect of the present invention is a packaging device for packaging an article using a packaging material, and a placement table for placing the article to be packaged on the placement table. A first packaging material conveying means for conveying the packaging material onto the mounting table before the article is placed; and the article placed on the first region of the packaging material on the placing table. Weighing means for weighing and transporting the packaging material in a state where the article is placed on the first area, over the second area of the packaging material in front of the first area, over the article A second packaging material conveying means that is folded back, a sealing means that seals the edges of the folded first packaging material and the second region, and a stored belt-shaped packaging material. from a cutting means for cutting the packaging material of the packaging unit to be used in one packaging, the first packaging material conveying means, Is characterized in that for conveying the packaging material is cut by the serial cutting means on the mounting table.

According to the packaging device according to the third aspect, the second packaging material transport means transports the packaging material in a state where the article is placed on the first region, and the second packaging material transport unit forwards the first packaging material from the first region. Two areas are folded back beyond the article. And a sealing means seals the edge of the 1st area | region and 2nd area | region of the folded packaging material. Therefore, according to the packaging apparatus which concerns on a 1st aspect, it becomes possible to package articles | goods, without using a tray. As a result, the amount of waste discharged can be reduced for the consumer, and the cost required for the purchase and management of the tray can be reduced for the manufacturer, and it is not necessary to secure a storage location for the tray.
Moreover, according to the packaging apparatus which concerns on a 3rd aspect, a cutting means cut | disconnects the packaging material of a packaging unit from a strip | belt-shaped packaging material, and a 1st packaging material conveyance means is a packaging unit package cut | disconnected by the cutting means. The material is transferred onto the mounting table. Accordingly, since the packaging material has already been cut at the time when the second packaging material transporting unit starts the packaging material transporting operation, the band-shaped packaging is used after the transporting operation is started or during the sealing operation by the sealing device. There is no need to cut the material. As a result, a mechanism for rejoining the cut strip-shaped packaging materials and a mechanism for collecting unnecessary packaging materials generated along with the cutting can be omitted, and the apparatus can be downsized.

  ADVANTAGE OF THE INVENTION According to this invention, the packaging apparatus which can package articles | goods without using a tray can be obtained.

It is a perspective view which shows typically the whole structure of the packaging apparatus which concerns on embodiment of this invention. It is a figure which shows typically the layout of each process part in a packaging apparatus. It is a figure which shows typically the structure of each process part shown in FIG. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a schematic diagram which shows operation | movement of a mounting and measurement part and a sealing part in order of a process. It is a perspective view which shows the state of a film typically. It is a figure which shows typically the sealing location of a film.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the element which attached | subjected the same code | symbol in different drawing shall show the same or corresponding element.

  FIG. 1 is a perspective view schematically showing the overall structure of a packaging device 1 according to an embodiment of the present invention. The packaging device 1 is installed, for example, in a back yard of a supermarket or the like, and performs each processing of packaging, weighing, and pricing of articles with a single device. The article to be processed is, for example, food such as meat, fish, and vegetables. A display unit 60, an operation unit 61, and a label printer 62 are arranged on the front surface (the surface viewed from the X1 direction in the drawing) of the apparatus housing. The display unit 60 displays various setting information, the weighing result of the article, pricing information according to the weighing value, and the like. The operation unit 61 includes a numeric keypad, an operation switch, and the like, and an operator inputs various setting information by operating the operation unit 61. From the label printer 62, a label in which the measured value of the article, pricing information, and the like are written is output for each article.

  FIG. 2 is a diagram schematically showing the layout of each processing unit in the packaging apparatus 1. The packaging device 1 includes a placement / metering unit 2, a sealing unit 3 disposed behind the mounting / metering unit 2, and a discharge unit disposed beside the mounting / metering unit 2 and the sealing unit 3. 4. In the placement / weighing unit 2, an article to be processed is placed on a film by an operator, and the weight of the article is weighed. The article placed and weighed by the placing / weighing unit 2 is conveyed to the sealing unit 3 together with the film along the X1 direction in the drawing as indicated by an arrow L1. In the sealing part 3, an article is packaged using a film. The article after packaging by the sealing part 3 is conveyed to the discharge part 4 along the Y direction in the figure as indicated by an arrow L2. The article is conveyed along the X2 direction in the drawing as indicated by an arrow L3 and discharged from the discharge unit 5. The placement / metering unit 2 and the discharge unit 5 are arranged side by side at substantially the same height of the apparatus housing. The placement / metering unit 2, the sealing unit 3, and the discharge unit 5 are arranged in substantially the same plane so that the heights of the respective article placement surfaces are common. As a result, the article travels on the article transport path defined in the order of the arrows L1 → L2 → L3 with almost no drop.

  FIG. 3 is a diagram schematically showing the configuration of each processing unit shown in FIG. The mounting / metering unit 2 includes a mounting table 10 for mounting an article, a chuck 13 for gripping and transporting a film (first packaging material transporting means), a cutter 12 for cutting a film (cutting means), and A film transport conveyor 11 is provided. The sealing unit 3 includes a chuck 14 (second packaging material transport unit) that grips and transports the film, seal units 16 and 17 (sealing unit), a seal height adjustment unit 18, and ± Y directions in the figure. It has the roller 15 which can advance / retreat. The seal height adjustment unit 18 has a belt conveyor that conveys articles in the Y direction in the figure. A plurality of rollers 19 are arranged side by side between the sealing unit 3 and the discharge unit 4. The discharge unit 4 includes a belt conveyor 20 that conveys articles in the X2 direction in the figure, and a discharge table 21 in which a plurality of rollers are arranged. As shown in FIG. 1, the mounting table 10 and the discharge table 21 are arranged side by side at substantially the same height of the apparatus housing.

  4 to 20 are schematic diagrams showing the operations of the placement / metering unit 2 and the sealing unit 3 in the order of steps. The film transport conveyor 11 includes an upper conveyor 11U and a lower conveyor 11L. The cutter 12 has an upper cutter 12U and a lower cutter 12L. The chuck 13 has an upper chuck 13U and a lower chuck 13L. A measuring unit 80 such as a load cell is attached below the carrier 10. The chuck 14 has an upper chuck 14U and a lower chuck 14L. The seal part 16 has an upper seal part 16U and a lower seal part 16L. The seal part 17 has an upper seal part 17U and a lower seal part 17L. The upper seal portions 16U and 17U are configured as an upper seal unit 70U, and the lower seal portions 16L and 17L are configured as a lower seal unit 70L.

  First, referring to FIG. 4, a belt-like film 50 is supplied from a film supply roll 30, and the front end of the film 50 slightly protrudes from the downstream end of the film transport conveyor 11. The upper chuck 13U and the lower chuck 13L grip the leading end of the film 50 by sandwiching the leading end of the film 50 protruding from the transport conveyor 11 from above and below.

  Next, referring to FIG. 5, the upper chuck 13 </ b> U and the lower chuck 13 </ b> L move on the mounting table 10 in the direction X <b> 1 in the drawing while holding the film 50. The film transport conveyor 11 is also driven in conjunction with the movement of the upper chuck 13U and the lower chuck 13L, whereby a new film 50 is supplied from the film supply roll 30. The upper chuck 13U and the lower chuck 13L stop at predetermined positions on the mounting table 10 according to the length of the film 50 used in one packaging operation.

  Next, referring to FIG. 6, the upper cutter 12U moves in the Z2 direction in the drawing, and the lower cutter 12L moves in the Z1 direction in the drawing, so that the film 50 is cut by the upper cutter 12U and the lower cutter 12L. To do. Thereby, the film 50A of the length of the packaging unit used by one packaging operation is obtained.

  Next, referring to FIG. 7, the upper chuck 13U and the lower chuck 13L move on the mounting table 10 in the X1 direction in the drawing while holding the film 50A. Thereby, the film 50 </ b> A is transported on the mounting table 10. The tip of the film 50 slightly protrudes from the downstream end of the mounting table 10.

  Next, referring to FIG. 8, the upper chuck 13U and the lower chuck 13L move to a predetermined retreat location. As a result, the gripping of the film 50A by the upper chuck 13U and the lower chuck 13L is released, and the film 50A is placed on the mounting table 10 in a non-holding state. In this situation, the weighing means 80 measures the weight of the film 50A and stores the weight value. The weighing of the film 50A is performed every packaging cycle.

  Next, referring to FIG. 9, the article 100 is placed by the operator. In packaging apparatus 1 according to the present embodiment, it is possible to directly place bare article 100 on film 50 without using a tray (article storage container). However, the use of the tray is not necessarily prohibited, and the tray on which the article is placed can be placed on the placement table 10. The article 100 is placed at a designated location on the placement table 10 via the film 50A. In this state, the total weight of the film 50A and the article 100 is weighed by the weighing means 80. Then, the weight value of the article 100 alone is calculated by subtracting the previously stored weight value of the film 50A from the total weight value of the film 50A and the article 100 by a calculation means (not shown).

  Next, referring to FIG. 10, the upper chuck 14U and the lower chuck 14L grip the tip of the film 50A by sandwiching the tip of the film 50A protruding from the mounting table 10 from above and below.

Next, referring to FIG. 11, the upper chuck 14U and the lower chuck 14L move in the X1 direction in the figure while holding the film 50A. As the upper chuck 14U and the lower chuck 14L move, the article 100 placed on the film 50A also moves. The upper chuck 14U and the lower chuck 14L are stopped at predetermined positions beyond the downstream end of the lower seal unit 70L. In addition, in order to keep the stretched state of the film 50A in the left-right direction (Y direction), the left and right ends of the film 50A may be sandwiched by a film transport conveyor (not shown).
Next, referring to FIG. 12, the retracted roller 15 is moved onto the film 50A. The roller 15 presses the left and right edge portions of the film 50A from above.

  Next, referring to FIG. 13, the upper chuck 14U and the lower chuck 14L move obliquely upward in the X2 direction in the figure while holding the film 50A. At this time, since the left and right edge portions of the film 50A are pressed by the rollers 15, the stretched state of the film 50A is maintained. Therefore, as the upper chuck 14U and the lower chuck 14L move, the article 100 placed on the film 50A moves in the X1 direction in the drawing and is conveyed onto the seal height adjusting unit 18.

  Next, referring to FIG. 14, the roller 15 is moved to the retreat position shown in FIG. Thereby, pressing by the roller 15 is completed, and the stretched state of the film 50A is released.

  Next, referring to FIGS. 15 and 16, the upper chuck 14U and the lower chuck 14L move obliquely downward in the X2 direction in the figure while holding the film 50A. At this time, since the stretched state of the film 50A resulting from the pressing of the roller 15 is released, the position of the article 100 does not change even if the upper chuck 14U and the lower chuck 14L move. As shown in FIG. 16, the upper chuck 14U and the lower chuck 14L stop at a position slightly shifted in the X2 direction in the drawing from the lower seal portion 16L.

  Next, referring to FIG. 17, seal height adjustment unit 18 is driven downward by a predetermined amount corresponding to the thickness of article 100. The seal height adjusting unit 18 is driven in the Z2 direction in the drawing to a position where the height of the upper surfaces of the lower seal portions 16L and 17L and the center height of the article 100 in the thickness direction are substantially equal. However, as long as the relative position between the article 100 and the lower seal portions 16L and 17L can be adjusted, the lower seal unit 70L may be driven upward instead of driving the seal height adjustment unit 18 downward.

  Next, referring to FIG. 18, the upper chuck 14 </ b> U and the lower chuck 14 </ b> L move to a predetermined retreat location. Thereby, the gripping of the film 50A by the upper chuck 14U and the lower chuck 14L is released.

  FIG. 21 is a perspective view schematically showing the state of the film 50A. Due to the series of operations of the chuck 14 so far, the second portion 502 of the film 50A in front of the first portion 501 on which the article 100 is placed (front in the X1 direction in the drawing) exceeds the article 100. Thus, the appearance is folded back in the X2 direction in the figure. Thus, the chuck 14 as the packaging material conveying means first conveys the film 50A on which the article 100 is placed on the first portion 501 on the placing table 10 from the placing portion 2 to the sealing portion 3, Next, the second portion 502 in front of the first portion 501 is folded back from above the article 100 and then lowered from above.

  Next to FIG. 18, referring to FIG. 19, the upper seal unit 70U is driven in the Z2 direction in the drawing, whereby the upper seal unit 16U, 17U and the lower seal unit 16L, 17L cause the film 50A from above and below. Is inserted. And the edge parts of the 1st part 501 and the 2nd part 502 are sealed by thermocompression bonding. FIG. 22 is a diagram schematically showing a sealing portion of the film 50A. The area AR1 of the side portion is sealed by the upper seal portion 17U and the lower seal portion 17L, and the area AR2 of the mouth portion is sealed by the upper seal portion 16U and the lower seal portion 16L. Thereby, the bag 40 in which the article 100 is accommodated between the first portion 501 and the second portion 502 is formed. Note that it is not always necessary to seal the three sides of the bag body 40. For example, the sealing of the area AR2 may be suspended, and only two side portions may be sealed. In this case, since the mouth portion of the bag body 40 is opened, the operator can put a seasoning sachet or the like into the bag body 40 after the bag body 40 is discharged from the packaging device 1.

  Next, referring to FIG. 20, the upper seal unit 70 </ b> U is driven in the Z <b> 1 direction in the drawing to return to the initial position shown in FIG. 18. Thereafter, the seal height adjusting unit 18 is driven in the Z1 direction in the drawing, and accordingly, the bag body 40 on the seal height adjusting unit 18 is also driven upward. Thereafter, the belt conveyor of the seal height adjustment unit 18 is driven, so that the bag body 40 jumps over the lower seal portion 17L from above the seal height adjustment unit 18 and via the roller 19 to the belt of the discharge portion 4. It is conveyed on the conveyor 20 (refer FIG. 3). Thereafter, the seal height adjusting unit 18 is driven in the Z2 direction in the figure, thereby returning to the initial position shown in FIG. Further, the chucks 13 and 14 return to the initial positions shown in FIG. Thereby, it will be in the standby state of the next packaging operation | movement.

  Thus, according to the packaging device 1 according to the present embodiment, the chuck 14 conveys the film 50A with the article 100 placed on the first portion 501 (first region), and the first portion 501. A second portion 502 (second region) of the more front film 50A is folded back beyond the article 100. And the seal parts 16 and 17 seal the edges of the first part 501 and the second part 502 of the folded film 50A. Therefore, according to the packaging device 1 according to the present embodiment, the article 100 can be packaged without using a tray. As a result, the amount of waste discharged can be reduced for the consumer, and the cost required for the purchase and management of the tray can be reduced for the manufacturer, and it is not necessary to secure a storage location for the tray.

  Further, according to the weighing device 1 according to the present embodiment, the weighing means 80 measures the weight of the film 50A before the article 100 is placed on the film 50A, and the article 100 is placed on the film 50A. Then, the total weight of the article 100 and the film 50A is weighed. Therefore, the weight of the article 100 itself not including the weight of the film 50A can be accurately obtained by subtracting the measured value before placing the article from the measured value after placing the article.

  Further, according to the packaging device 1 according to the present embodiment, the cutter 12 cuts the packaging unit film 50 </ b> A from the belt-like film 50, and the chuck 13 places the packaging unit film 50 </ b> A cut by the cutter 12. It is transferred onto the table 10. Accordingly, since the film 50A has already been cut when the chuck 14 starts the conveyance operation of the film 50A, the belt-like film is formed after the conveyance operation by the chuck 14 is started or when the sealing portions 16 and 17 are sealed. There is no need to cut 50. As a result, a mechanism for recombining the cut strip-like films 50 and a mechanism for recovering unnecessary films generated along with the cutting can be omitted, so that the apparatus can be miniaturized.

<Modification>
When the film 50 is transparent, a colored front / back identification display may be added to the film 50 in order to easily distinguish the front and back of the transparent film 50. The front / back identification display may be added to the front surface of the film 50 or may be added to the back surface of the film 50. Further, the additional mode may be printing on the film 50 or labeling on the film 50. For example, arbitrary information such as characters, symbols, logo marks, designs, etc. relating to stores and products is added to the surface of the film 50 as a front / back identification display. Or it is good also as a front-and-back identification display by making the design different in the surface and the back surface of the film 50. FIG.

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 10 Mounting stand 12 Cutter 13,14 Chuck 16,17 Seal part 50,50A Film 80 Measuring means 100 Article

Claims (3)

A packaging device for packaging an article using a packaging material,
A mounting table for mounting the article to be packaged;
A first packaging material transport means for transporting the packaging material onto the mounting table before the article is placed on the mounting table;
Weighing means for weighing a weight of the article placed on the first region of the packaging material on the placing table;
The packaging material is transported in a state where the article is placed on the first area, and a second area of the packaging material in front of the first area is folded back beyond the article. Packaging material conveying means;
Sealing means for sealing edges of the first region and the second region of the folded packaging material ;
The packaging device further measures the weight of the packaging material conveyed onto the mounting table by the first packaging material conveyance unit before the article is placed on the packaging material .   A cutting means for cutting the packaging material of the packaging unit to be used in a single packaging from the belt-like packaging material stored;
  The packaging apparatus according to claim 1, wherein the first packaging material conveying unit conveys the packaging material cut by the cutting unit onto the mounting table.   A packaging device for packaging an article using a packaging material,
  A mounting table for mounting the article to be packaged;
  A first packaging material transport means for transporting the packaging material onto the mounting table before the article is placed on the mounting table;
  Weighing means for weighing a weight of the article placed on the first region of the packaging material on the placing table;
  The packaging material is transported in a state where the article is placed on the first area, and a second area of the packaging material in front of the first area is folded back beyond the article. Packaging material conveying means;
  Sealing means for sealing edges of the first region and the second region of the folded packaging material;
  Cutting means for cutting the packaging material of the packaging unit to be used in one packaging from the strip-shaped packaging material stored;
With
  The first packaging material conveying means is a packaging device for conveying the packaging material cut by the cutting means onto the mounting table.

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