JP2022060604A - Vacuum packaging device - Google Patents

Abstract

To enable reduction of the number of workers without need for monitoring or involvement by auxiliary workers by preventing occurrence of slippage and bending of a film around which an object to be packaged is wound, especially at the edges, as much as possible, in a vacuum packaging device.SOLUTION: A vacuum packaging device is provided with a vacuum packaging machine 11 and a feeding device 12 for feeding an object to be packaged 14 to the vacuum packaging machine 11. In a state in which the object to be packaged 14 is inserted to the inside of a tubular film 13 having an open end, the feeding device 12 feeds this object to be packaged 14 to the vacuum packaging machine 11. The feeding device 12 is provided with a temporary fixing device for temporarily fixing an end portion of the tubular film 13.SELECTED DRAWING: Figure 1

Description

The present invention relates to a vacuum packaging device.

As a vacuum packaging device, two upper and lower films are supplied to the object to be packaged, and these films are connected in a tubular shape around the object to be packaged to cover the object to be packaged, and the object to be packaged in that state. It is known that both ends of a tubular film are vacuum-sealed after the surroundings are evacuated (Patent Document 1).

Japanese Unexamined Patent Publication No. 61-2441718

In the vacuum packaging apparatus known so far, the vacuum packaging operation is performed by a worker for supplying the object to be packaged to the entrance of the apparatus and an auxiliary worker who performs the following operations. That is, in the vacuum packaging equipment known so far, it is necessary to convey the packaging object wrapped in a thin film for vacuum packaging in the apparatus, but at the time of the transportation, it is necessary to convey it to the end of the film. Misalignment and bending may occur. Therefore, the auxiliary worker properly winds the packaged object with the film before the packaged object being carried into the machine for vacuum packaging, and properly vacuums the packaged object in the vacuum packaging machine. It is necessary to judge whether or not the packaging work can be performed, and if it is not appropriate, correct the appearance of the film.

Therefore, the present invention solves such a problem and prevents the occurrence of slippage and bending, especially at the end of the film wound with the packaged object, as much as possible, without the need for monitoring or involvement by an auxiliary worker. The purpose is to obtain a vacuum packaging device that can reduce the number of workers.

In order to achieve this object, the vacuum packaging device of the present invention includes a vacuum packaging machine and a feeding device for feeding the object to be packaged into the vacuum packaging machine.
The feeding device is configured to feed the packaging object into a vacuum packaging machine in a state where the packaging object is inserted inside a tubular film having an open end.
The feeding device is characterized by comprising a temporary fixing device for temporarily fixing the end portion of the tubular film.

According to the vacuum packaging device of the present invention, the temporary fixing position in the temporary fixing device is set to be higher than the support position for supporting the packaged object during the temporary fixing process, and the feeding device is inside the packaged object. It is preferable to provide an inclined guide member that guides the end portion of the tubular film in which the film is inserted from the support position toward the temporary fixing position.

According to the vacuum packaging device of the present invention, the feeding device heat-bonds the ends of two sheet-shaped films to each other to process one sheet-shaped film having the first heat-bonded portion. The processed sheet-shaped film is packaged by transporting the packaged object placed between the heat-bonding / cutting device and the two sheet-shaped films toward the temporary fixing position. Equipped with a transport device that covers the object in a U shape,
The heat-bonding and cutting device heat-bonds the overlapped portions of the films formed by covering the processed sheet-shaped film on the object to be packaged in a U-shape to form a tube. It forms a second heat-bonded portion for the purpose.
Further, the heat-bonding / cutting device cuts the intermediate portion in the width direction of the second heat-bonding portion in the second heat-bonding portion, thereby separating the tubular film having the packaged object inside. At the same time, a new first heat-bonding portion is formed between the ends of the remaining two sheet-shaped films.
The transport device is used at the time of forming the second heat-bonding portion and the new first heat-bonding portion in the heat-bonding / cutting device, at the time of separating the tubular film, and at the time of temporarily fixing the tube-shaped film in the temporary fixing device. It is preferable that the device is configured to perform an intermittent operation to stop the transfer.

According to the vacuum packaging device of the present invention, the feeding device conveys the packaged object placed between the two sheet-shaped films toward the temporary fixing position by the conveying device. A transport guide member for guiding the transport of the end portion of the film is provided, and the transport guide member is arranged so as to cross the installation positions of the heat-bonding / cutting device and has a second heat-bonding portion in the heat-bonding / cutting device. From the position intersecting the installation position of the heat-bonding / cutting device so as not to interfere with the heat-bonding / cutting device at the time of forming the new first heat-bonding portion and separating the tubular film. It is preferably configured to retract to a position.

According to the vacuum packaging device of the present invention, the feeding device is configured to supply one of the two sheet-shaped films before being heat-bonded in the horizontal direction, and is composed of the two sheet-shaped films. Configured to supply the other downwards,
The feeding device includes a film guide member that guides the two sheet-shaped films.
The film guide member includes a horizontal guide surface that guides one of the two sheet-shaped films in the horizontal direction, and a vertical guide surface that guides the other of the two sheet-shaped films in the downward direction. It is preferable to provide.

According to the vacuum packaging device of the present invention, the feeding device includes a pressing device that presses the tubular film at a position that does not interfere with the temporary fixing device when the end portion of the tubular film is temporarily fixed by the temporary fixing device. Is preferable.

According to the vacuum packaging device of the present invention, the feeding device may be provided with a nozzle for blowing air onto the tubular film in which the object to be packaged is contained so that the posture of the film is not disturbed. Suitable.

According to the vacuum packaging device of the present invention, the vacuum packaging machine covers a bed that supports a tubular film containing an object to be packaged and a tube-shaped film that is supported by the bed and contains the object to be packaged. Therefore, the chamber forming member capable of forming a vacuum space around the tubular film containing the packaged object and the end portion of the tubular film in the vacuum-exhausted vacuum space are sealed by thermal adhesion. Equipped with a heat bonding device for
The bed is configured to carry the packaged object vacuum-sealed with a tubular film downward from the bed.
It is preferable that the bed is provided with an obliquely downward inclined member for guiding the vacuum-sealed packaged object to be carried out from the bed.

According to the vacuum packaging device of the present invention, since the feeding device includes a temporary fixing device for temporarily fixing the end portion of the tubular film, the end portion of the tubular film in which the object to be packaged is inserted and wound is temporarily fixed. It is sent to the vacuum packaging machine in a stopped state, which makes it possible to prevent the occurrence of slippage and bending, especially at the edges of the film wound with this packaging object, as much as possible, which enables monitoring by auxiliary workers. The number of workers can be reduced without the need for involvement.

It is a top view of the vacuum packaging apparatus of embodiment of this invention. It is a front view of the vacuum packaging apparatus. It is a left side view of the vacuum packaging apparatus. It is a top view of the tubular film containing the object to be packaged. It is a front view of a tubular film containing an object to be packaged. It is a top view which shows the details of a tube processing apparatus and its vicinity. It is a side view of the part shown in FIG. It is a three-dimensional view which shows the detailed structure of the main part of a tube processing apparatus. It is a three-dimensional view which shows the detailed structure of another main part of a tube processing apparatus. It is a figure which shows the detailed structure of a temporary fixing device. FIG. 10 is a plan view of the plate and its vicinity in FIG. 10. It is another plan view which shows the details of a tube processing apparatus and its vicinity. It is a figure which shows the drive mechanism of the entrance / exit type guide member. It is sectional drawing which shows the structure of the main part of a vacuum packaging machine. It is a figure which shows the operation of a temporary fixing device. It is a figure which shows the operation of the next stage of FIG. 15 in a temporary fixing device. It is a figure which shows the operation of the next stage of FIG. 16 in a temporary fixing device. It is a figure which shows the operation of the next stage of FIG. 17 in a temporary fixing device.

The vacuum packaging device shown in FIG. 1 includes a vacuum packaging machine 11 and a feeding device 12.

As shown in FIGS. 4 and 5, the feeding device 12 creates a state in which a packaging object 14 such as food is put inside a tubular film 13 having both ends open, and puts the packaging object 14 into a vacuum packaging machine 11. Transport toward. The feeding device 12 shown in FIG. 1 has a charging unit 15 for loading the packaging object 14 and a tube that processes the film into a tube shape by heat bonding in a state where the sheet-shaped film is wound around the packaging object. Feeding and transporting a state in which the packaging object 14 is put inside a tubular film having both ends opened by the chemical processing device 16 and the tubular processing device 16 toward the vacuum packaging machine 11. A device 17 is provided.

As shown by an arrow in FIG. 1, the vacuum packaging machine 11 has a configuration in which a plurality of beds 18, 18, ... Are conveyed along an endless path. Each bed 18 receives from the feed transport device 17 at the position of the end of the feed transport device 17 in the feed device 12 in a state where the object to be packaged is put inside the tubular film having both ends open, and then receives the next. While being moved along the rotary vacuum sealing device 19, the vacuum sealing device 19 evacuates the inside of the tubular film and then evacuates the openings at both ends of the film by heat bonding or the like. It is intended to be sealed. Then, each bed 18 can discharge the vacuum-sealed package object toward the carry-out device 20 installed following the vacuum-sealing device 19. After that, the bed 18 returns to the position of the end of the feed transfer device 17 in the feed device 12 along the above-mentioned endless path, and repeats the above-mentioned operation.

Hereinafter, the feeding device 12 will be described in detail. As shown in FIGS. 1, 2, 3, 6, 7, and 3, in particular, the feeding device 12 includes a lower film roll 23 for the lower feed film 22. , A film roll 25 for the upper film for the upper supply film 24 is installed.

The lower supply film 22 is unwound from the film roll 23, wound around a plurality of guide rolls 26, guided, and guided to the feeding unit 15 of the feeding device 12. At the loading section 15, the lower supply film 22 is spread horizontally on the conveyor device 30. Then, as shown in detail in FIG. 7, in the loading section 15, the object to be packaged 14 is manually placed on the lower supply film 22 spread horizontally on the conveyor device 30. Is placed.

As shown in FIGS. 3 and 7, the upper supply film 24 is wound around a plurality of guide rolls 28 and then supplied from above onto the lower supply film 22 in which the packaging object 14 is placed. And put on the lower supply film 22 and the object to be packaged 14. At this time, the tip of the upper supply film 24 and the tip of the lower supply film 22 are in a heat-bonded state as described later. 48 in FIG. 7 shows the heat-bonded portion.

As shown in FIG. 7, the lower supply film 22 in which the packaging object 14 is placed is sent from the charging unit 15 toward the tubing processing device 16 by the above-mentioned conveyor device 30. The conveyor device 30 has a plurality of horizontal bars 31 that are spaced from each other, and these bars 31 move intermittently in the horizontal direction while being spaced from each other, whereby the packaged object 14 is used. It is configured to be able to convey the lower supply film 22 in the state where the is placed. As shown in FIGS. 6 and 7, the film guide members 32, 32 are located at one end and the other end in the width direction of the films 22 and 24 at the confluence of the lower supply film 22 and the upper supply film 24. Are provided respectively. Each film guide member 32 is composed of a block-shaped body made of resin, and as shown in FIG. 7, the horizontal direction guides one end and the other end of the lower supply film 22 in the horizontal direction so as not to rise. It has a guide surface 33 and a vertical guide surface 34 that guides one end and the other end of the upper supply film 24 in the vertical direction so as not to move toward the charging portion 15.

The packaging object 14 is sandwiched between the lower supply film 22 and the upper supply film 24, that is, the lower supply film 22 and the upper supply film 24 are covered in a U shape (FIG. 6). 15), the conveyor device 30 conveys the film from the charging section 15 toward the tube processing device 16. At that time, one end and the other end of both films 22 and 24 in the width direction are at positions higher than the bottom of the packaging object 14, respectively, as shown in FIG. 7, and in detail, the height of the packaging object 14. It is guided while being supported by the upper surface of the fixed guide member 35 at a position of about half of the above. A transport guide that can protrude from each fixed guide member 35 and can move in and out toward the fixed guide member 35 at the inlet portion of the tube-forming apparatus 16 provided following the charging portion 15. A retractable guide member 36 is provided as a member. The retractable guide member 36 is composed of a plate-shaped body, and at a position equivalent to that of the fixed guide member 35, one end and the other end in the width direction of both films 22 and 24 are similarly formed. It is configured to be supportive.

A heat-bonding and cutting device 38 is installed at a position where the retractable guide member 36 is provided at the entrance of the tube-forming device 16. The heat-bonding / cutting device 38 has a base portion 39 and an elevating portion 40 located so as to sandwich the retractable guide member 36 from above and below. Of these, the base portion 39 is located below the retractable guide member 36 when the retractable guide member 36 protrudes from the fixed guide member 35, and the retractable guide member 36 is a fixed guide member. When entering and exiting 35, the exit / exit guide member 36 is configured to be exposed without being obstructed. The elevating part 40 is located at a standby position above the retractable guide member 36 when the retractable guide member 36 protrudes from the fixed guide member 35, and the conveyor device 30 that moves intermittently is stopped. When the retractable guide member 36 moves in and out of the fixed guide member 35, it descends toward the base portion 39 through the space between adjacent bars 31 and 31 in the stopped conveyor device 30. As a result, both films 22 and 24 existing after the packaging object 14 has passed toward the tube processing apparatus 16 are heat-bonded in a superposed state, and the center of the heat-bonded portion is heat-bonded in the width direction of the films 22 and 24. It is designed to be able to cut over.

As a result, as shown in FIGS. 6 and 4, a tubular film 13 covering the packaging object 14 is formed, and the packaging object 14 is placed inside the tubular film 13 having one end 42 and the other end 43 open. It will be in a crowded state. FIG. 6 shows a state in which the packaging object 14 in this state is transported to the temporary fixing device 46 by the intermittently moving conveyor device 30 and is stationary at the position of the temporary fixing device 46.

The temporary fixing device 46 temporarily fixes the openings of one end 42 and the other end 43 of the tubular film 13. The operation of the temporary fixing device 46 is performed at the same time as the operation of the thermal bonding and cutting device 38. By the temporary fixing step, the pre-sealed product 44 in which the packaging object 14 is put in the tubular film 13 in which the openings of one end 42 and the other end 43 are temporarily fixed is formed.

In FIG. 6, the pre-sealed product 44 is formed with a second heat-bonding portion 47 by the heat-bonding and cutting device 38. Further, in FIG. 6, as described above, 48 is a first heat-bonding portion between the lower supply film 22 and the upper supply film 24 in the charging portion 15 formed by the heat-bonding and cutting device 38. .. In the state shown in FIG. 6, the pre-sealed product 44 is conveyed to the position of the temporary fixing device 46 in the tube processing device 16 and is stationary as described above, but the next operation target, that is, the lower part. The side supply film 22, the upper supply film 24, and the packaging object 14 have the first heat-bonding portion 48 staying on or near the base portion 39 of the heat-bonding and cutting device 38. The first heat-bonded portion 48 is also formed in the pre-sealed product 44 in the previous step.

Hereinafter, the details of the temporary fixing device 46 of the tube processing device 16 will be described. In the temporary fixing device 46 shown in FIGS. 6 to 10, when the tubular film 13 is formed by the thermal bonding and cutting device 38, at the same time, the films at the openings of one end 42 and the other end 43 of the tubular film 13 are connected to each other. Is tentatively fixed while leaving the state of communication to the inside of the tubular film 13. For this purpose, for example, a spot-shaped heat-bonding treatment can be performed. The specific configuration is as follows.

That is, for example, as shown in FIG. 7, the temporary fixing device 46 is provided above the support position that supports the transport surface of the conveyor device 30, that is, the bottom of the packaging object 14, and is shown in FIGS. 6 to 10. In addition, the accommodating member 52 having a U-shaped cross section opened upward for accommodating the heating type base portion 51 for thermal adhesion, and the accommodating member 52 along the length direction of the tubular film 13 are outside. A horizontal plate-shaped open end support member 53 that supports one end 42 and the other end 43 of the tubular film 13 at the time of thermal bonding, and the packaging object 14 in the pre-sealed product 44. It includes an inclined guide member 54 configured to incline upward from the above-mentioned support position that supports the bottom toward the accommodating member 52. The upper surface of the base portion 51 constitutes a temporary fixing position. The temporary fixing position is located above the transport surface of the conveyor device 30. These are provided at positions corresponding to one end 42 and the other end 43 of the tubular film 13, respectively. The inclined guide member 54 guides the tubular film 13 from the side of the packaged object 14 toward the temporary fixing device 46 along the transport surface of the conveyor device 30 diagonally upward toward the upper end of the accommodating member 52. It is a thing. That is, the tubular film 13 in a state of wrapping the object to be packaged 14 is stationary at the position of the temporary fixing device 46 in the tube processing device 16 with its bottom supported by the conveyor device 30. At that time, the one end 42 and the other end 43, which are each open in the tubular film 13, need to be guided toward a position higher than the transport surface of the conveyor device 30 in the temporary fixing device 46. .. The inclined guide member 54 is a member for carrying the guide. An oblique guide member 55 is provided at an upstream end portion of the inclined guide member 54 along the transport direction of the pre-sealed product 44. The diagonal guide member 55 is formed in a triangular shape in a plan view, and guides the end portion of the film conveyed from the charging portion 15 in the width direction diagonally upward along the conveying direction, and the film. It is for guiding diagonally upward even along the length direction of. The height of the temporary fixing device 46 is about half the height of the packaging object 14.

7 to 11 show a detailed structure of the temporary fixing device 46 and its vicinity. 8 to 11, 56 indicates an elevating device in the temporary fixing device 46. The elevating device 56 is configured such that an arm 59 is attached to a horizontal rotation shaft 58 supported by a foundation portion 57, and the arm 59 swings in the vertical direction when the rotation shaft 58 rotates. .. A lever 60 is attached to the rotating shaft 58, and the rotating shaft 58 can be rotationally driven by pushing and pulling the lever 60 by the cylinder device 61. A plate 62 is attached to the tip of the arm 59, and the plate 62 is positioned close to the base portion 51 housed in the accommodating member 52 and above the base portion 51 by swinging the arm 59. It is possible to move up and down to and from a position far away from.

A protruding member 63 for point thermocompression bonding is attached to the plate 62. Specifically, a slot 64 is formed in the plate 62 in a penetrating state, and the slot 64 is positioned along the length direction of the base 51 when the plate 62 is close to the base 51. It is configured to do. The projecting members 63 are configured to be fixed in an arbitrary number at an arbitrary position along the length direction of the elongated hole 64. Reference numeral 65 is a fixing bolt for that purpose. Then, as shown in FIG. 10, when the plate 62 is close to the base portion 51, the projecting member 63 and the base portion 51 sandwich the tubular film 13 stationary at the position of the temporary fixing device 46 and heat-bond it. It is configured to be able to. As a result, the tubular film 13 is heat-bonded in a spot shape at one end 42 and the other end 43. That is, since this thermal adhesion is not a continuous form but a spot-like form, the films at the openings of one end 42 and the other end 43 of the tubular film 13 are inside the tubular film 13 as described above. It will be temporarily fixed while leaving the communication state with.

The details of the heat-bonding / cutting device 38 and the retractable guide member 36 will be described. As shown in FIGS. 7-9 and 12 and 13, the base portion 39 is arranged below the bar 31 of the conveyor device 30, so that the conveyor device 30 is arbitrary regardless of the presence of the base portion 39. Can perform a transfer operation. In the conveyor device 30, the base portion 39 is positioned between the adjacent bars 31 and 31 when the intermittent transport operation is stopped, that is, the upper surface of the base portion 39 is positioned when the transport operation is stopped. It is configured to be exposed without being covered by the bar 31. Then, in this state, the elevating portion 40 is lowered, and the lower supply film 22 and the upper supply film 24 are sandwiched between the elevating portion 40 and the base portion 39 so that they can be thermally bonded to each other. There is. At that time, as described above, the structure is provided with a cutter capable of cutting the central portion of the heat-bonded portion between the films 22 and 24 along the width direction of the films 22 and 24.

The above-mentioned temporary fixing device 46 is configured such that when the elevating portion 40 of the heat-bonding and cutting device 38 descends to heat-bond the films 22 and 24, the plate 62 approaches the base portion 51 in conjunction with this. Has been done. That is, as described above, it is configured so that the temporary fixing operation by the temporary fixing device 46 can be performed at the same time as the thermal bonding and cutting operation by the heat bonding and cutting device 38.

As shown in FIGS. 8 and 12, the elevating portion 40 is provided with a film pressing member 66 as a pressing device. The film pressing member 66 is composed of a pair of cantilevered rod-shaped bodies, is arranged at a position that does not interfere with the temporary fixing device 46, and is temporarily lowered when the elevating portion 40 is lowered as shown in FIG. The tubular film 13 temporarily fixed by the fixing device 46 is pressed at a position near each temporary fixing device 46, and the tubular film 13 to be temporarily fixed is displaced during the operation of the temporary fixing device 46. It is for preventing. The above-mentioned rod-shaped body constituting the film pressing member 66 can be formed of a hollow pipe-shaped body or a medium substance.

A device for moving the entrance / exit type guide member 36 to / from the entrance / exit type guide member 36 will be described. As shown in FIGS. 6 to 9 and 13, the retractable guide member 36 can retract and exit with respect to the fixed guide member 35. Then, as described above, the heat-bonding / cutting device 38 is configured so that the elevating portion 40 moves up and down. In FIG. 13, the elevating part 40 is drawn in detail. That is, the elevating portion 40 includes an elevating frame 67 and a member 68 for heat bonding and film cutting provided on the frame 67. As shown in the figure, a bracket 70 is provided on the retractable guide member 36, and an arm 71 is attached to the bracket 70. The arm 71 is configured to extend from the bracket 70 toward the side of the transport path of the packaged object 14 in the conveyor device 30. A swing lever 72 that swings in a vertical plane in a direction parallel to the transport direction of the conveyor device 30 is installed on the side of the elevating portion 40 of the heat bonding and cutting device 38, and the swing lever 72 swings. The moving end and the extended end of the arm 71 are connected to each other by a connecting member 73. A long hole 74 is formed in the swing lever 72 in a penetrating state along the length direction thereof, and a roller 75 that fits into the long hole 74 is provided in the elevating portion 40 of the heat bonding and cutting device 38. There is.

With such a configuration, when the elevating portion 40 moves up and down, the roller 75 also moves up and down integrally with the elevating portion 40, and the swing lever 72 swings accordingly. Then, as the swing lever 72 swings, the retractable guide member 36 linked to the movement of the swing lever 72 by the connecting member 73, the arm 71, and the bracket 70 performs the exit / exit operation. become. In FIG. 13, reference numerals 76 and 77 are guide bars for guiding the exit / exit operation of the exit / exit guide member 36, and perform a reciprocating operation in accordance with the exit / exit operation of the exit / exit guide member 36. Reference numeral 79 indicates an exit / exit stroke of the exit / exit type guide member 36.

Specifically, when the object to be packaged 14 is conveyed by the conveyor device 30, the elevating portion 40 is in a raised state as shown in FIG. 8 and the like so as not to interfere with the transfer. At that time, FIG. 13 As shown in FIG. 13, the roller 75 is also raised, and as a result, the swing lever 72 is in the position shown by the solid line in FIG. Therefore, as shown in FIGS. 8 and 9, the retractable guide member 36 projects from the fixed guide member 35 in the transport direction of the packaged object 14 by the conveyor device 30, and is packaged toward the temporary fixing device 46. It serves to guide the ends of the films 22 and 24 that are conveyed by the conveyor device 30 together with the object 14.

On the other hand, at the time of heat-bonding / cutting for the films 22 and 24, the elevating portion 40 of the heat-bonding / cutting device 38 descends as shown by a virtual line in FIG. Then, in conjunction with this, the retractable guide member 36 moves from the above-mentioned protruding position to the retractable position to the fixed guide member 35. As a result, the portion of the base portion 39 of the heat-bonding and cutting device 38 that was previously covered by the retractable guide member 36 is exposed, and the covered portion is also thermally bonded and cut by the device 38. Will be able to do.

When the thermal bonding and cutting by the device 38 and the temporary fixing by the temporary fixing device 46 are completed, the elevating portion 40 of the thermal bonding and cutting device 38 rises away from the base portion 39 and is temporarily fixed in synchronization with the rise. The plate 62 of the stopper 46 rises away from the base 51. As a result, the retractable guide member 36 again protrudes from the fixed guide member 35 in the transport direction of the packaged object 14 by the conveyor device 30.

Next, after the temporary fixing by the temporary fixing device 46, the tubular film 13 in the state where the packaging object 14 is put inside, that is, the pre-sealed state product 44 (see FIG. 6) is temporarily fixed. The configuration of the feed transfer device 17 for transporting from the position of 46 toward the vacuum packaging machine 11 will be described. As shown in FIG. 1, the tubular film 13 in a state where the packaging object 14 is inserted inside is continuously directed from the terminal portion to the vacuum packaging machine 11 at the terminal portion of the transport path of the conveyor device 30. The above-mentioned feed transport device 17 for transport is provided. In the feed transfer device 17, the direction change conveyor 81 and the belt conveyor 82 are arranged so as to be connected in the length direction. That is, the conveyor device 30 and the belt conveyor 82 in the feed transfer device 17 are configured so that their transfer directions differ from each other by 90 degrees. That is, it is configured so that the transport direction is changed at a right angle from the conveyor device 30 toward the belt conveyor 82 in the feed transfer device 17. As a result, as can be understood from FIG. 1, it is possible to realize space saving as compared with installing the conveyor device 30 and the feed transfer device 17 continuously in the same direction.

The direction changing conveyor 81 has a known configuration, and although not shown, the unsealed product 44, that is, a plurality of bars capable of receiving the packaged object 14 and the tubular film 13 carried out from the conveyor device 30. , A plurality of endless belt-shaped traveling bodies provided in the length direction of the bars between adjacent bars. The traveling body can ascend from the lower side of the bar toward the upper side of the bar, and receives the packaged object 14 and the tubular film 13 from the bar by ascending, and receives the traveling body by driving the vehicle. The packaged object 14 and the tubular film 13 can be conveyed in the length direction of the belt conveyor 82, that is, in the conveying direction thereof. The belt conveyor 82 conveys the pre-sealed product 44, that is, the packaging object 14 and the tubular film 13 received from the direction change conveyor 81 toward the vacuum packaging machine 11.

Air nozzles 83 are provided at the installation position of the direction change conveyor 81 and the installation position of the belt conveyor 82, respectively. The air nozzle 83 blows air from above toward the tubular film 13 containing the object to be packaged 14, thereby preventing the occurrence of displacement or bending at the end of the film 13, and vacuum packaging described later. This is to ensure that the end portion of the machine 11 after vacuum exhausting is thermally bonded.

The belt conveyor 82 receives the tube-shaped film 13 containing the pre-sealed product 44, that is, the packaging object 14, from the direction change conveyor 81 and conveys the tube-shaped film 13 containing the packaging object 14. The installation position is determined so that the conveyor belt conveyor 82 is not close to the side of the conveyor belt 82, that is, the end portion in the width direction of the conveyor belt 82. As a result, a situation occurs in which the tubular film 13 containing the packaging object 14 comes into contact with the side frame 84 of the belt conveyor 82 shown in FIG. 1 and the end portion of the film 13 is bent or rolled up. , Can be reliably prevented.

As shown in detail in FIG. 2, the end portion of the belt conveyor 82 in the feed transfer device 17 is the receiving position of the packaged object 14 by the bed 18 conveyed along the endless path in the vacuum packaging machine 11 as described above. It is installed at 85. At the receiving position 85, the tubular film 13 containing the packaging object 14 is fed from the end of the belt conveyor 82 in the feed transport device 17 toward the upper surface of the bed 18. The bed 18 includes a seal base 86 that supports one end 42 of the tubular film 13 and a seal base 87 that supports the other end 43 of the tubular film 13. Then, when the tubular film 13 containing the packaging object 14 is sent from the end of the belt conveyor 82 to the bed 18, the sealing base 86 just supports one end 42 of the tubular film 13 and the sealing base. The transport speed of the belt conveyor 82 and the traveling speed of the bed 18 are synchronized so that the 87 supports the other end 43 of the tubular film 13.

The end of the belt conveyor 82 is lowered as close as possible to the upper surface of the bed 18. Correspondingly, the upper surface of the pedestal 88 for the packaged object 14 in the bed 18 is set at a position as high as possible. As a result, the drop when the tubular film 13 containing the packaging object 14 is transferred from the end of the belt conveyor 82 to the upper surface of the bed 18 is suppressed, and the occurrence of displacement of the tubular film 13 at the time of transfer is reduced. Therefore, the transfer position to the bed 18 is stabilized.

In the vacuum sealing device 19 of the vacuum packaging machine 11 shown in FIG. 1, the vacuum chamber 90 is formed inside the cover 89 by covering the bed 18 with the cover 89 as a chamber forming member as shown in FIGS. 1 and 14. Will be done. Then, while the bed 18 moves along the above-mentioned endless path, the inside of the vacuum chamber 90 is evacuated, and then one end 42 and the other end supported by the sealing bases 86 and 87 in the tubular film 13 are evacuated. 43 is vacuum sealed by thermal adhesion.

After that, the atmosphere is introduced into the vacuum chamber 90, the cover 89 is moved away from the bed 18, and the vacuum chamber 90 is opened. The bed 18 with the cover 89 away reaches the position of the unloading device 20 shown in FIG. 1 by traveling. The unloading device 20 is provided with a horizontally oscillating unloading arm 92, and a pusher 93 is attached to the oscillating end of the unloading arm 92. When the unloading arm 92 swings, a vacuum-sealed package is provided. The pusher 93 pushes the object out of the bed 18 toward the carry-out conveyor 94. As shown in FIGS. 1 and 14, the bed 18 is provided with a chute plate 95 as a diagonally downward inclined member continuously from the pedestal 88, and the vacuum-sealed package object is a pusher 93. When pushed, the chute plate 95 guides the bed 18 toward the carry-out conveyor 94.

In the above configuration, as shown in FIG. 3, the lower supply film 22 and the upper supply film 24 are set in a predetermined state, and then the packaging object 14 is placed on the lower supply film 22 in the charging section 15. Is placed by the worker. When the conveyor device 30 travels on the conveyor device 30, the upper supply film 24 whose tip is heat-bonded to the tip of the lower supply film 22 is pulled by the lower supply film 22, and the upper supply film 24 is to be packaged as shown in FIG. It is put on the object 14. The packaged object 14 sandwiched between the two upper and lower films 22 and 24 is conveyed by the conveyor device 30 to the position of the temporary fixing device 46 as shown in FIG. Then, the conveyor device 30 is stopped.

At this time, the lower supply film 22 and the upper supply film 24 are guided by the guide member 32 shown in FIG. 7 or the like, so that the package target 14 can be sandwiched in a stable posture. In this state, the films 22 and 24 and the object to be packaged 14 are conveyed from the charging unit 15 toward the temporary fixing device 46 by the conveyor device 30, and at that time, one end and the other end in the width direction of the films 22 and 24 are conveyed. Is stable guided by the fixed guide member 35 and the retractable guide member 36 protruding from the fixed guide member 35 in conjunction with the raising of the elevating portion 40 of the thermal bonding and cutting device 38. In this state, it is conveyed toward the temporary fixing device 46. Then, these ends are guided by the oblique guide member 55 and the inclined guide member 54 in the temporary fixing device 46, so that the temporary fixing device 46 has a predetermined posture.

In this state, as shown in FIG. 8 and the like, the elevating portion 40 of the thermal bonding and cutting device 38 descends. Then, the roller 75 also descends in conjunction with it, and the swing lever 72 swings accordingly, so that the retractable guide member 36 moves from the protruding position to the retracted position to the fixed guide member 35. Then, the elevating portion 40 can be lowered to a position where the base portion 40 can be pressed without any problem because there is no obstacle to the descent operation at the ends of the films 22 and 24.

As a result, at the position of the heat-bonding and cutting device 38, the upper and lower films 22 and 24 are sandwiched between the base portion 39 and the elevating portion 40 and are heat-bonded to each other. Moreover, the central portion of the heat-bonded portion is cut along the width direction of the film. As a result, the upper and lower films 22 and 24 sandwiching the packaging object 14 at the position of the temporary fixing device 46 are joined to each other at the first heat-bonding portion 48, whereby the packaging object 14 is inserted inside. The tubular film 13 is formed. As shown in FIG. 18, at the position of the heat-bonding / cutting device 38, the ends of the upper and lower films 22 and 24 following the heat-bonding / cutting device 38 are bonded to each other at the second heat-bonding portion 47.

At this time, the film pressing member 66 attached to the elevating portion 40 is lowered as shown in FIG. 16 in conjunction with the lowering operation of the elevating portion 40 of the heat bonding and cutting device 38, and the film pressing member 66 lowers the film pressing member 66. As described above, the tubular film 13 temporarily fixed by the temporary fixing device 46 can be pressed at a position near the temporary fixing device 46 to prevent the tubular film 13 to be temporarily fixed from being displaced. ..

That is, the temporary fixing device 46 also operates at the same timing as the thermal bonding and cutting device 38 operates. In detail, at the same timing as the elevating portion 40 of the thermal bonding and cutting device 38 descends, the cylinder device 61 of the temporary fixing device operates and the arm 59 swings, thereby showing in FIGS. 17 and 10. The plate 62 moves so as to approach the base portion 51, sandwiches the ends of the films 22 and 24 between the projecting member 63 attached to the plate 62 and the base portion 51, and heat-bonds them in a spot shape. do. At this time, since the films 22 and 24 are guided by the inclined guide member 54 from the installation position of the packaging object 14 in the conveyor device 30 toward the base portion 51 for thermal adhesion in the temporary fixing device 46, they are spot-shaped. The thermal adhesion of the above can be carried out stably.

After the spot-shaped heat bonding is completed, the plate 62 is separated from the base portion 51 as shown in FIG. 18 at the same timing as the elevating part 40 of the heat bonding / cutting device 38 rises. FIG. 18 shows a spot-shaped heat-bonded portion 96 formed on the other end 43 of the tubular film by the temporary fixing device 46.

As a result, the tubular film 13 in which the spot-shaped heat-bonded portions 96 are formed at one end 42 and the other end 43 and is temporarily fixed is shown in FIG. 1 from the position of the temporary fixing device 46 due to the intermittent operation of the conveyor device 30. It is conveyed toward the direction change conveyor 81 of the feed transfer device 17 shown in 1.

Subsequent operations are as described above, but the tubular film 13 in which one end 42 and the other end 43 of the tubular film 13 are temporarily fixed by the spot-shaped heat-bonding portion 96 is a direction change conveyor in the feed transfer device 17. When conveyed by the 81 and the belt conveyor 82, it is possible to significantly reduce the occurrence of displacement and bending at one end 42 and the other end 43 of the tubular film 13. Therefore, it is possible to omit monitoring and involvement by the auxiliary worker during the transfer in the feed transfer device 17 and during the transfer from the feed transfer device 17 to the vacuum packaging machine 11.

Further, the one end 42 and the other end 43 of the tubular film 13 can be pressed by the ejected air by the air nozzle 83 provided at the installation position of the direction change conveyor 81, so that the one end 42 and the other end of the tubular film 13 can be pressed. The occurrence of deviation and bending in 43 can be reduced, and therefore the occurrence of such deviation and bending can be reliably prevented.

Not only that, as shown in FIG. 1, since the air nozzle 83 is also installed near the position where the vacuum packaging machine 11 is transferred to the bed 18 in the belt conveyor 82, the tubular film 13 which is the target of the transfer to the bed 18 is installed. One end 42 and the other end 43 can be leveled, and the position of thermal adhesion at the end of the tubular film 13 formed in the vacuum packaging machine 11 can be stabilized.

11 Vacuum packaging machine 12 Feeding device 14 Packaging target 16 Tubing processing device 17 Feeding transfer device 22 Lower supply film 24 Upper supply film 30 Conveyor device 32 Film guide member 35 Fixed guide member 36 Exit / exit guide member (transport guide) Element)
38 Thermal bonding and cutting device 46 Temporary fixing device 62 Plate 63 Protruding member 64 Long hole 65 Fixing bolt 66 Film holding member 72 Swing lever 74 Long hole 75 Roller 83 Air nozzle 95 Shoot plate (tilted member)

Claims (8)

It is equipped with a vacuum packaging machine and a feeding device for feeding the object to be packaged into this vacuum packaging machine.
The feeding device is configured to feed the packaging object into a vacuum packaging machine in a state where the packaging object is inserted inside a tubular film having an open end.
The feeding device is a vacuum packaging device including a temporary fixing device for temporarily fixing an end portion of the tubular film. The temporary fixing position in the temporary fixing device is set to be higher than the support position for supporting the packaged object during the temporary fixing process.
The feeding device according to claim 1, wherein the feeding device includes an inclined guide member that guides an end portion of a tubular film having an object to be packaged therein from the support position to a temporary fixing position. Vacuum packaging equipment. The feeding device includes a heat-bonding and cutting device that heat-bonds the ends of two sheet-shaped films to each other to process one sheet-shaped film having a first heat-bonding portion, and the above-mentioned two sheets. By transporting the packaged object placed between the sheet-shaped films of No. 1 toward the temporary fixing position, the processed sheet-shaped film is covered with the packaged object in a U-shape. Equipped with a transport device,
The heat-bonding and cutting device heat-bonds the overlapped portions of the films formed by covering the processed sheet-shaped film on the object to be packaged in a U-shape to form a tube. It forms a second heat-bonded portion for the purpose.
Further, the heat-bonding / cutting device cuts the intermediate portion in the width direction of the second heat-bonding portion in the second heat-bonding portion, thereby separating the tubular film having the packaged object inside. At the same time, a new first heat-bonding portion is formed between the ends of the remaining two sheet-shaped films.
The transport device is used at the time of forming the second heat-bonding portion and the new first heat-bonding portion in the heat-bonding / cutting device, at the time of separating the tubular film, and at the time of temporarily fixing the tube-shaped film in the temporary fixing device. The vacuum packaging device according to claim 2, wherein the vacuum packaging device is configured to perform an intermittent operation to stop the transfer. When the feeding device conveys the packaged object placed between the two sheet-shaped films toward the temporary fixing position by the conveying device, the feeding device guides the transportation of the end portion of the tubular film. Equipped with members
This transport guide member is arranged so as to intersect the installation positions of the heat-bonding / cutting device, and at the time of forming the second heat-bonding portion and the new first heat-bonding portion in the heat-bonding / cutting device. When the tubular film is separated, it is characterized in that it is configured to retract from a position intersecting the installation position of the heat bonding / cutting device to another position so as not to interfere with the heat bonding / cutting device. The vacuum packaging device according to claim 3. The feeding device is configured to supply one of the two sheet-shaped films before heat bonding in the horizontal direction and to supply the other of the two sheet-shaped films downward. ,
The feeding device includes a film guide member that guides the two sheet-shaped films.
The film guide member includes a horizontal guide surface that guides one of the two sheet-shaped films in the horizontal direction, and a vertical guide surface that guides the other of the two sheet-shaped films in the downward direction. The vacuum packaging device according to claim 3 or 4, wherein the vacuum packaging device is provided. The feeding device is provided with a pressing device that presses the tubular film at a position that does not interfere with the temporary fixing device when the end portion of the tubular film is temporarily fixed by the temporary fixing device, according to claims 1 to 5. The vacuum packaging device according to any one of the above items. The feeding device according to claims 1 to 6, wherein the feeding device is provided with a nozzle for blowing air to the tubular film in which the object to be packaged is contained so that the posture of the film is not disturbed. The vacuum packaging device according to any one of the above. The vacuum packaging machine inserts the packaging object by covering the bed supporting the tubular film containing the packaging object and the tubular film containing the packaging object supported by the bed. It is provided with a chamber forming member capable of forming a vacuum space around the tubular film, and a thermal bonding device for sealing the end portion of the tubular film by thermal bonding in the vacuum-exhausted vacuum space.
The bed is configured to carry the packaged object vacuum-sealed with a tubular film downward from the bed.
The vacuum according to any one of claims 1 to 7, wherein the bed is provided with an obliquely downward inclined member for guiding a vacuum-sealed packaged object to be carried out from the bed. Packaging equipment.

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