JP2015081109A - Food storing and packing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food storing and packing method keeping an excellent appearance of food lump without deformation.SOLUTION: A food storing and packing method comprises: a folding plate contacting step to place a folding plate to contact with a food storage bag at a base end of a flat part formed in an approximately half part side of the food storage bag opposite to the other approximately half part side in which a food lump is stored; a folding step to release the contact of the folding plate by lifting the storage bag, folding the flat part to be suspended at a base end, forming a suspending flat part to release the contact; and a suspended flat part fixing step to overlappingly fix the suspended flat part onto an external bottom surface by folding the same toward the external bottom surface side of the storage bag.

Description

  The present invention relates to a food storage and packaging method for storing and packaging food chunks such as rice balls and hamburgers.

  Conventionally, food lumps such as hamburgers are displayed on a sales display shelf in a form of being packaged and sealed in a bag of synthetic resin or the like. Since these food chunks are packaged containing air when the storage bag is sealed, they are unnecessarily large storage bag forms.

  This was also unavoidable in the packaging process of the food chunk. That is, the storage bag for packaging food chunks has been transported on the packaging line, a cylindrical film is carried into the cylindrical film, and the food film is welded and sealed for each food chunk from the cylindrical film. A single package of food lumps is formed. Therefore, the air was stored in the sealing bag in the process of becoming a food lump packaging bag alone.

JP 2011-152943 A

  The conventional packaging bag for such food chunks has the following drawbacks. In other words, since air remains stored in the enormous amount of packaging bags, the entire bag becomes enormous and the transport container becomes enlarged, leading to a decrease in transport efficiency. There is a risk of causing loss of shape of the food mass, reducing the value of the product, and furthermore, because a large amount of air is stored in the storage bag, it has the disadvantage that the oxidation rate of the food mass is accelerated and the decay rate is increased, Moreover, since the bag is abnormally enlarged in appearance, it has a drawback of reducing the delicious impression of the stored food.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a food storage and packaging method for storing and packaging food chunks with good appearance without causing loss of shape of the food chunks. And

  In the food storage and packaging method according to the present invention, the flatness formed in the substantially half of the other side of the storage bag in which the food chunk is stored in the substantially majority of the one side and the flat part is formed in the other substantially half of the other side. A folding plate abutting step in which a folding plate is brought into contact with the base end folding position of the portion; and the storage bag is lifted, the flat portion is bent from the base end folding position and suspended to form a hanging flat portion, and It comprises a bending step of releasing the contact of the folded plate, and a hanging flat portion fixing step of folding the hanging flat portion toward the outer bottom surface side of the storage bag and superposing and fixing it on the outer bottom surface.

  The flat portion is formed to extend to a substantially intermediate position in the vertical direction of the storage bag. In the folding plate abutting step, the flat portion is located at the proximal folding position that is a substantially intermediate position in the vertical direction of the storage bag. Then, the folded plate is brought into contact.

  In addition, the food mass is stored in the substantially majority portion on one side, and the other substantially half portion is pressed from above and below to be flattened to form the flat portion, thereby releasing air in the substantially half portion on the other side. It further includes an air venting step.

  Further, a pressing plate opening / closing mechanism that allows the upper and lower pressing plates to freely open and close is used as the pressing means that presses the substantially half of the other side of the storage bag from above and below.

  Further, when lifting the storage bag in the folding step, the base on which the storage bag is placed and the folding plate are configured to rise together.

  The drooping flat portion is formed by being bent downward from the base end folding position by its own weight by releasing the contact of the folded plate.

  When the hanging flat portion is bent and superposed on the outer bottom surface of the storage bag, the hanging flat portion is formed in the storage bag by advancing the storage bag in a state in which the hanging flat portion is formed. This is done by folding in the direction of the outer bottom surface.

  According to the present invention, a food lump can be stored and packaged with good appearance without causing the food lump to lose its shape.

It is a perspective view which shows the whole apparatus of a food storage bag formation part. It is explanatory drawing which simplified the whole apparatus of the food storage bag formation part. It is explanatory drawing which showed the structure of the food storage bag formation part. It is the top view which planarly viewed the food storage bag formation part. It is sectional drawing which looked at the food storage bag formation part from the downstream. It is a perspective view which shows the structure of a bag inside air discharge apparatus. It is explanatory drawing which shows the internal structure of a bag inside air discharge apparatus. It is explanatory drawing which shows another structure of a bag internal air discharge apparatus. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state by which the hamburger main body was supplied to the front side by the cylindrical food bag on the food storage bag formation part. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state which the bag internal air discharge | emission apparatus, the 2nd gusset nail, and the 3rd gusset nail approached the food bag from the back-and-forth movement. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state which the mechanism for air discharge, the 2nd gusset nail, and the 3rd gusset nail approached to the food bag. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state which pressed the longitudinal direction front part of the food bag with the bag internal air discharge apparatus. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state which heat-processed. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state cut | disconnected by the cutter. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state which the upper and lower top sealers separated. It is a pillow packaging method of this invention, Comprising: It is explanatory drawing which shows the state which became one form as a food bag. It is a side view which shows the example of whole structure of the storage bag folding part which concerns on this embodiment. It is a top view which shows an example of the storage bag folding part which concerns on this embodiment. It is a figure which shows the 1st process of the food storage packaging method by the storage bag folding part which concerns on this embodiment. It is a figure which shows the 2nd process of the food storage packaging method by the storage bag folding part which concerns on this embodiment. It is a figure which shows the 3rd process of the food storage packaging method by the storage bag folding part which concerns on this embodiment. It is a figure which shows the 4th process of the food storage packaging method by the storage bag folding part which concerns on this embodiment. It is a figure which shows the 5th process of the food storage packaging method by the storage bag folding part which concerns on this embodiment. It is a figure which shows the 6th process of the food storage packaging method by the storage bag folding part which concerns on this embodiment. It is a figure which shows the 7th process of the food storage packaging method by the storage bag folding part which concerns on this embodiment.

  Embodiments of the present invention will be described below.

  In the following description, a case where the food to be stored / packaged is a hamburger will be described as an example. However, the present invention is not limited to this case. For example, a rectangular sandwich, rice ball, dorayaki, etc. may be used.

(Whole structure of the food storage bag forming apparatus 10)
FIG. 1 is a side view showing the overall configuration of a food storage bag forming apparatus 10 in the present embodiment.

  The food storage bag forming apparatus 10 according to the present embodiment includes a product supply unit A, a storage bag forming unit B, and a storage bag folding unit C. As shown in FIG. 1, the product supply part A is arranged on the upstream side on the right side, the storage bag forming part B is arranged in the center, and the storage bag folding part C is arranged on the downstream side on the left side.

  The product supply unit A is an apparatus that supplies a hamburger H that is a food product and a resin film 26 that wraps the hamburger H.

  The storage bag forming part B is arranged on the downstream side of the product supply part A, and the hamburger H is introduced together with the long tubular film 12 supplied by the product supply part A. A single stored food storage bag 11 is formed.

  The storage bag folding part C is an apparatus that folds a part of the bag from the storage bag forming part B in the form of a single food storage bag 11 and folds it into a form of shipment. In the present invention, the storage bag folding unit C is a device that automatically folds a part of the bag, but this process can be manually folded instead of the storage bag folding unit C.

(Overall configuration of product supply unit A)
FIG. 2 is an explanatory diagram schematically illustrating the overall configuration of the food storage bag forming apparatus 10 of the present invention.

  As shown in FIG. 2, the product supply unit A includes a food carry-in conveyor 21 that supplies a hamburger H to be packaged, and a resin film supply means 25 that supplies a cylindrical film 12 that packages the hamburger H. is there.

  As shown in FIG. 2, the food carry-in conveyor 21 is a conveyor that supplies a hamburger H to be packaged, and an endless conveyor belt 24 is wound between a driving drum 22 and a driven drum 23 arranged at the end portion. It is a turn.

  As shown in FIG. 2, the resin film supply means 25 is configured to continuously feed out a belt-shaped resin film 26 from a film roll 30 wound up in a roll shape.

  Further, as shown in FIG. 2, the product supply unit A has a cylindrical shape in which a sheet-like resin film 26 supplied from the resin film supply means 25 is continuously supplied in the lower direction to form a cylinder. Means 28 and center seal means 27 for sealing the polymerized portion of the resin film 26 formed in a cylindrical shape are provided.

  As shown in FIGS. 1 and 2, the tubular forming means 28 forms a sheet-like resin film 26 in a continuous tubular shape by a bag making device 29 having a pair of left and right blades.

  The center sealing means 27 seals the lower overlapping portion of the tubular film 12. That is, the center seal means 27 includes a pair of left and right cylindrical heaters that heat-seal the lower part of the cylindrical film 12 having a rectangular cross section.

  In this way, as shown in FIG. 2, the product supply unit A forms a long cylindrical tubular film 12 from the resin roll 26 fed out from the film roll 30 in the form of a belt with the bag making device 29, and is below the conveyor. The center seal means 27 disposed on the back seals the back and fills and wears the contents, and then seals by performing a heat seal process (end seal) with a storage bag forming portion B described below. is there.

  In addition, the product supply unit A in the present embodiment produces a food height adjusting mechanism 31 that adjusts the height of the hamburger H so as to be stored in the tubular film 12 before being put into the bag making device 29. It is arranged immediately upstream of the bag device 29.

  The food height adjusting mechanism 31 is arranged in the form of a short belt conveyor in which an endless belt 34 is wound between two driven drums 33, 33 above the conveyor surface of the food carry-in conveyor 21.

  The food height adjustment mechanism 31 is set such that the lower surface of the belt 34 from the conveyor surface 21a of the food carry-in conveyor 21 gradually decreases toward the downstream side of the conveyor surface, and the downstream side of the belt 34 The height of the end is set so that the hamburger H is accommodated in the tubular film 12 formed by the bag making device 29.

  By comprising in this way, foods, such as a hamburger H, are prevented from contacting with a part of bag making machine 29 and collapsing.

(Overall configuration of storage bag forming part B)
The storage bag forming part B is arranged on the downstream side of the product supply part A, and the hamburger H is introduced together with the long tubular film 12 supplied by the product supply part A. A single packaged food storage bag 11 is formed.

  FIG. 3 is an explanatory view showing the structure of the storage bag forming portion B, (a) is a right side view showing the entire structure of the storage bag forming portion B, and (b) is a cross section at the center of the transport surface. It is sectional drawing which showed the structure. FIG. 4 is a plan view of the storage bag forming portion B as viewed from above. FIG. 5 is a cross-sectional view of the storage bag forming portion B as viewed from the downstream side.

  That is, the storage bag formation part B has the heat seal part 13 as a processing system for making it the form of such a single food storage bag 11, as shown in FIG.3 (b).

  As shown in FIG. 3B, the heat seal portion 13 is configured by a pair of top sealers 35 and 36.

  The lower end portion of the upper top sealer 35 includes an upstream heat seal portion 37 and a downstream heat seal portion 38 having a predetermined distance therefrom.

  Further, the upper end portion of the lower top sealer 36 includes an upstream heat seal portion 37, and a downstream heat seal portion 38 having a predetermined distance therefrom.

  The upstream heat seal portion 37 of each top sealer 35, 36 forms the rear end seal portion 141 of the food storage bag 11, and the downstream heat seal portion 38 connects the front end seal portion 140 of the food storage bag 11. To form.

  The heat seal portion 13 is driven by a known box motion, that is, heat seal processing is performed by moving the upper top sealer 35 and the lower top sealer 36 close to and away from each other while rotating in a substantially circular shape when viewed from the side.

  In the box motion, when the upper and lower top sealers 35 and 36 approach each other (during the heat sealing process), the upper and lower top sealers 35 and 36 are separated from each other with the tubular film 12 moving at the same speed from upstream to downstream. In the state, it moves to return to the original position from the downstream side to the upstream side.

  In such a known box motion drive, in this embodiment, the drive motor 41 provided in the storage bag forming box 40 is moved from the upper and lower large-diameter gears 112 and 113 to the upper and lower top sealers via a cam mechanism (not shown). 35 and 36 are moved toward and away from each other while rotating in a circular shape when viewed from the side.

  A bag cutter 42 is disposed between the upstream heat seal portion 37 and the downstream heat seal portion 38 of the upper top sealer 35.

  The bag cutter 42 has a blade surface formed at the lower end thereof, and is transported by taking the blade surface in and out downward from between the upstream heat seal portion 37 and the downstream heat seal portion 38. The cylindrical film 12 is cut to form a single food storage bag 11.

  Next, as shown in FIG. 3 (b), the storage bag forming unit B serves as a transport system for the first transport conveyor 45 on the upstream side of the heat seal unit 13 and the second transport on the downstream side of the heat seal unit 13. And a conveyor 61.

  Specifically, as shown in FIG. 3B, the first movable frame 46 has a first driven drum 51 disposed on the upstream side and a second driven drum 52 disposed on the downstream side. .

  The first fixed frame 47 is fixed to a machine frame (not shown) constituting the first transport conveyor 45, and has a frame main body 55 in the vertical direction, from the middle part of the frame main body 55 to the downstream side. A convex portion 56 is formed, and a third driven drum 53 is provided at the tip of the convex portion 56. A first transport drive motor 57 (shown in FIG. 4) is connected to the first fixed frame 47, a drive drum 48 is connected to the drive shaft of the first transport drive motor 57, and the first fixed frame 47 Four driven drums 54 are provided.

  Further, a conveyor belt 59 is wound around the drive drum 48 and the first driven drum 51 to the fourth driven drum 54. Further, a tension roller 60 is attached to the storage bag forming box 40 side, and the tip of the tension roller 60 is pressed against the surface of the transport belt 59. Then, by making the conveyor belt 59 of the first conveyor 45 rotatable, a conveyor conveyor surface is formed between the fourth driven drum 54 and the second driven drum 52.

  The 2nd conveyance conveyor 61 is arrange | positioned downstream of the 1st conveyance conveyor 45 as shown in FIG.3 (b), and the 1st conveyance conveyor 45 and the basic structure are the same.

  Specifically, as shown in FIG. 3B, a second transport drive motor 64 is disposed below the second fixed frame 63, and the drive shaft of the second transport drive motor 64 (shown in FIG. 4). A driving drum 65 is provided continuously, and a fifth driven drum 66 is provided on the upstream side of the driving drum 65 and a ninth driven drum 70 is provided on the lower side of the downstream side. The second fixed frame 63 is extended downstream, and an eighth driven drum 69 is disposed at the extended end.

  Further, a convex portion in the upstream direction is formed in the middle portion of the second fixed frame 63, and a fifth driven drum 66 is provided at the tip of the convex portion. Further, a tension roller 73 is attached to the storage bag forming box 40 side, and the tip of the tension roller 73 is pressed against the conveyor belt surface below the convex portion 74 of the second fixed frame 63.

  Further, the second movable frame 62 is provided with a sixth driven drum 67 on the upstream side and a seventh driven drum 68 on the downstream side.

  Further, a conveyor belt is wound around the driving drum 65 and the fifth driven drum 66 to the ninth driven drum 70.

  The movable frames 46 and 62 can reciprocate in the transport direction of the tubular film 12 on the fixed frames 47 and 63 by a known opening / closing mechanism. The known opening / closing mechanism includes a cam plate (not shown) in which a cam groove (not shown) is formed on each of the movable frames 46 and 62, and a drive motor via the cam mechanism (not shown). The movable frames 46, 62 can reciprocate back and forth along the rails 77 provided on the fixed frames 47, 63 by sliding the cams that move up and down in the cam grooves of the cam plates. It is composed.

  That is, the first transport conveyor 45 is configured such that the first movable frame 46 is movable on the first fixed frame 47, so that the conveyor terminal portion close to the heat seal portion 13 reciprocates in the transport direction of the tubular film 12. It is possible to move.

  The second conveyor 61 also has a second movable frame 62 and a second fixed frame 63, and the second movable frame 62 is movable forward and backward with respect to the first fixed frame 47.

  By comprising in this way, between the 1st conveyance conveyor 45 and the 2nd conveyance conveyor 61 can be comprised so that opening and closing is possible, and the 1st conveyance conveyor 45 and the 2nd conveyance conveyor which can be opened and closed can be comprised. The lower top seal 36 of the heat seal portion 13 can be projected and retracted with respect to 61.

  Next, the drive system of the heat seal part 13 and a conveyance conveyor is demonstrated.

  As shown in FIG. 3 (b), the storage bag forming section B has a drive mechanism for driving them between the first transport conveyor 45 and the second transport conveyor 61 and below the heat seal section 13. A storage bag forming box 40 is provided.

  As shown in FIG. 4, the storage bag forming box 40 includes a drive motor 41 on its outer side, and the storage bag forming unit B includes the following drive mechanism that can be driven based on the power of the drive motor 41.

  That is, as shown in FIG. 3B, the storage bag forming box 40 has a seal drive mechanism (not shown) that drives a pair of upper and lower top sealers 35 and 36 that perform heat sealing processing in the heat sealing portion 13 by box motion. Prepared). The storage bag forming section B includes a conveyor opening / closing mechanism (not shown) that opens and closes the downstream end of the upstream conveyor and the upstream end of the downstream conveyor.

  In the storage bag forming part B in the present embodiment, the seal drive mechanism and the conveyor opening / closing mechanism employ known drive systems, and the description thereof is omitted here.

  In such a configuration, the storage bag forming portion B in the present embodiment is characterized in that the storage bag forming portion B that performs the pillow wrapping includes the bag internal air discharge device 14 and the gusset forming body 15.

  Hereinafter, details of each mechanism of the bag internal air discharge device 14 and the gusset forming body 15 will be described. First, details of the bag internal air discharge device 14 will be described.

(Details of bag internal air discharge device 14)
The bag internal air discharge device 14 is configured so that the food container bag 11 with no storage hamburger H is sandwiched between the majority half R of the food storage bag 11 by the vertical pressing plate 82 on the approximate center line S of the tubular film 12. It is a device that vents air.

  FIG. 6 is a perspective view showing the structure of the bag internal air discharge device 14 in the present embodiment.

  That is, as shown in FIG. 6, the bag internal air discharge device 14 has an air vent device main body 80 and a base end portion disposed in the air vent device main body 80, and the distal end thereof is freely rotatable and extends toward the conveying surface side. A pair of upper and lower support pieces 81 and a pair of left and right pressing plates 82 attached to the front end side of the support piece 81 via a connecting mechanism 89 are provided.

  FIG. 7 is an explanatory view showing the internal structure of the air vent device main body 80 of the bag internal air discharge device 14.

  The air vent device main body 80 has a rectangular parallelepiped shape, and is provided with an air chuck type driving mechanism that moves a pair of upper and lower pressing plates 82 closer to and away from each other. As an air chuck type drive mechanism, for example, a fulcrum opening / closing air chuck made of SMC can be used.

  As shown in FIG. 7, the fulcrum opening / closing air chuck is formed by bending a pair of upper and lower pressing support pieces 81 at 90 degrees in front view and turning each bent portion around the horizontal axis to the air vent device main body 80. The base end portions of the support pieces 81 are pivotally connected to the tip end side of the piston rod 83 so as to be freely rotatable.

  The piston rod 83 is allowed to advance and retract in the horizontal direction by supplying and exhausting air through the air supply gasket 84 and the exhaust gasket 85 in the air chamber 76 disposed in the air vent device main body 80.

  In addition, a pair of upper and lower support pieces 81 that rotate up and down from the air vent device main body 80 are provided, and a pressing plate 82 is disposed on the distal end side of each support piece 81 via a coupling mechanism 89.

  The pressing plate 82 is rigid and has a flat plate shape, and can be configured to have a pair of upper and lower portions so as to sandwich a substantially majority portion R of the food storage bag 11 provided between the tip seal portion 140 of the tubular film 12 and the hamburger H. Have a large size. In the present embodiment, as shown in FIG. 6, the pressing plate 82 is provided with a plurality of slits 86 to reduce the weight of the pressing plate 82 itself.

  In this manner, the bag internal air discharge device 14 causes the support piece 81 to rotate freely by supplying air from the outside to the air supply and exhaust valves via the air supply pipe (not shown) on the air vent device main body 80. In addition, the pair of upper and lower pressing plates 82 are brought close to each other and sandwiched on the substantially center line S of the tubular film 12 so that the air inside the bag can be discharged.

  Note that the bag internal air discharge device 14 only needs to have a drive mechanism that presses and holds the food storage bag 11 with a pair of upper and lower pressing plates 82, or releases the pressing and holding, that is, An electric motor, a solenoid, an electromagnet, or a crank type may be used instead of the air chuck type.

  FIG. 8 is an explanatory view showing another structure of the bag internal air discharge device 14.

  Further, as shown in FIG. 8, in addition to rotating the pair of upper and lower pressing plates 82 as described above, one of the pair of upper and lower pressing plates 82 is configured to be rotatable, On the other hand, the pressing plate 82 can be lifted up and down, so that it can be clamped on the approximate center line S of the tubular film 12.

  In the bag internal air discharge device 14, the height of the pair of upper and lower pressing plates 82 is set so that the height position of the pair of upper and lower pressing plates 82 is substantially on the center line S of the cylindrical film 12. Rotation range adjusting means 87 that enables adjustment of the rotation range is provided.

  That is, the rotation range adjustment means 87 changes the position of the rotation restricting body 90 that restricts the rotation on the base end side of the support piece 81 that supports each pressing plate 82 in the direction of the conveyer. The rotation range of the pair of pressing plates 82 can be changed in a state where the height of the heat seal portion 13 or the like is changed by an adjusting mechanism 88 (shown in FIG. 3B).

  Specifically, the rotation range adjusting means 87 includes a semi-annular rotation restricting body 90 provided at the base end portion of the pressing plate 82, a fixing member 91 fixed to the air vent device main body 80, and a rotation restricting body. A position between the upper and lower guide rods 92 inserted into the fixing member 91 from the vertical plate 90a provided on the 90 and the rotation member 90 to be inserted into the fixing member 91 between the support rods and capable of being screwed together. An adjusting screw rod 93, a first screw rod 94 screwed to the position adjusting screw rod 93 in the fixing member 91, and a second screw plate screwed to the position adjusting screw rod 93 outside the fixing member 91. 95.

  The rotation restricting body 90 has a U-shaped cross section, and the U-shaped end portions are positioned on the front and back surfaces of the air vent device main body 80, so that the rotation restricting body 90 is supported on the front and back surfaces of the air vent device main body 80. The base end portion of the piece 81 is configured to be regulated.

  The fixing member 91 is fixed to the main body of the bag internal air discharge device 14.

  The guide rod 92 is a cylindrical elongated rod, and one end thereof is fixed to the rotation restricting body 90 and the other end is loosely fitted in the fixing member 91.

  The position adjusting screw 93 is a long and narrow rod of a cylindrical body. A screw thread is formed on the outer peripheral surface of the cylindrical body, one end is fixed to the rotation restricting body 90, and the other end is a fixing member 91. It is loosely fitted inside.

  The first screw plate 94 is screwed to the position adjusting screw rod 93 so as to be rotatable in an insertion hole provided in the center of the fixing member 91. Further, the second screw plate 95 is screwed into a position adjusting screw rod 93 protruding from the outside of the fixing member 91.

  Then, by rotating the first screw plate 94, the screwing position on the position adjusting screw rod 93 is changed, that is, the position adjusting screw rod 93 can be reciprocated to the left or right. Thereby, the position of the rotation restricting body 90 in the direction of the conveyor can be changed with respect to the fixed member 91. Thereafter, the second screw plate 95 is rotated to the fixing member 91 side, and the front and rear positions of the rotation restricting body 90 are fixed.

  That is, as shown in FIG. 7, if the rotation restricting body 90 is moved forward on the front and back surfaces of the air vent device main body 80 to change the position, the rotation angle of the support piece 81 can be set small. If the position is changed in the reverse direction, the rotation angle of the support piece 81 can be set large. Thus, the rotation angle of the support piece 81 can be changed and the pressing range of the pressing plate 82 can be changed.

  And the center position of a press range is the heat seal part 13 by the height adjustment mechanism 88 shown in FIG.3 (b) by inputting the information of the height of the hamburger H on the control panel 144 shown in FIG. It has an effect that the pressing range can be changed according to the hamburger H having different heights in a state where the height positions such as are positioned.

(Details of gusset forming body 15)
In the distribution process of the tubular film 12, the storage bag forming unit B in the present embodiment projects bent gussets on the inner sides of both sides of the tubular film 12 by projecting gusset claws toward both sides of the tubular film 12. The gusset forming body 15 is provided.

  As shown in FIG. 4, the gusset forming body 15 includes a pair of left and right gusset claws, one set on the upstream side of the heat seal portion 13 and two sets on the downstream side. That is, the gusset forming body 15 includes a pair of upstream gusset bodies 101 arranged on the upstream side of the heat seal portion 13 and a downstream side gusset body 102 composed of two sets arranged on the downstream side.

  As shown in FIG. 4, the upstream side gusset body 101 includes a first gusset claw 103 configured by a pair of left and right, and the first gusset claw 103 has a long cylindrical packaging bag at the tip of the upstream side of the heat seal portion 13. When the sheet is cut, a folded gusset is formed on both side surfaces of the tubular film 12 that becomes the subsequent food storage bag 11.

  The first gusset claw 103 is formed of a vertical plate with a tapered tip, and a substantially rectangular piece 99 is attached to the distal end side thereof. The leading edge is rounded so as not to penetrate the tubular film 12. The substantially rectangular piece 99 is horizontally mounted on the height center line S on the tip side of the first gusset claw 103.

  Further, the first gusset claw 103 has a heat seal portion in plan view of its front end side so that the tubular film 12 is not damaged when the inwardly folded gusset g1 is formed on both side surfaces of the tubular film 12. It has a structure in which the contact force is relaxed by forming a shape bent at a predetermined angle on the 13th side.

  The first gusset claw 103 is supported by a claw support 106, and the claw support 106 is connected to a vertical support plate 124 provided on the storage bag forming box 40 via a connecting member 107. The second gusset claw 104 and the third gusset claw 105 also have the same structure.

  The downstream gusset body 102 includes a second gusset claw 104 and a third gusset claw 105. The second gusset claw 104 and the third gusset claw 105 form gussets g2, g31, and g32 at the front side of the cylindrical film 12 simultaneously with the bag inside air venting operation by the bag inside air discharging device 14.

  Similarly to the first gusset claw 103, the second gusset claw 104 and the third gusset claw 105 are each composed of a vertical plate with a tapered tip, and the leading edge is rounded. Similar to the first gusset claw 103, the second gusset claw 104 and the third gusset claw 105 have a shape bent at a predetermined angle toward the heat seal portion 13 in plan view. The second gusset claw 104 has a structure bent toward the heat seal portion 13 and the third gusset claw 105 is bent in the downstream direction, and a hamburger is provided between the second gusset claw 104 and the third gusset claw 105. H is easily positioned (shown in FIG. 11).

  The air inside the tubular film 12 is discharged by the bag internal air discharge device 14, and at the same time, the second gusset claw 104 comes into contact with both side surfaces of the tubular film 12 on the rear side of the hamburger H, and the third gusset claw 105. Is configured to abut on both side surfaces of the tubular film 12 on the front side of the hamburger H.

(Description of drive coupling mechanism of bag internal air discharge device 14 and gusset forming body 15)
Next, the drive connection mechanism of the bag internal air discharge device 14 and the gusset forming body 15 will be described.

  As shown in FIGS. 3 to 5, the bag internal air discharge device 14 and the gusset forming body 15 are connected to a storage bag forming box 40 having a drive mechanism via a connecting mechanism 123.

  That is, the storage bag forming box 40 is provided with a left-right approach / separation mechanism 108 that allows the bag internal air discharge device 14 and the gusset forming body 15 to approach and separate from the left and right sides of the tubular film 12. In addition, a back-and-forth moving mechanism 109 that can move back and forth is provided.

(Left / Right Approach / Separation Mechanism)
First, the drive mechanism of the bag internal air discharge device 14 and the gusset forming body 15 will be described.

  The storage bag forming box 40 of the storage bag forming section B includes a drive motor 41 and includes the following drive mechanism that can be driven based on the power of the drive motor 41.

  Specifically, as shown in FIG. 4, a drive motor 41 is provided on one outer side of the storage bag forming box 40, and as shown in FIG. 5, a motor gear (not shown) of a motor shaft (not shown) of the drive motor 41. A lower large-diameter gear 112 is connected via a small-diameter gear 111 (not shown).

  As shown in FIGS. 3A and 5, the lower large-diameter gear 112 is configured as a pair of left and right by being connected to the outer sides of the left and right storage bag forming boxes 40 by a rotation shaft 112 a. An upper large-diameter gear 113 is meshed with an upper portion of the lower large-diameter gear 112.

  As shown in FIGS. 3A and 5, the upper large-diameter gear 113 is also configured as a pair of left and right by being connected to the outer side of the left and right storage bag forming boxes 40 by a rotating shaft 113a.

  As shown in FIG. 3A, the left / right approach / separation mechanism 108 uses a drive motor 41 that drives the heat seal portion 13 as a drive source. Specifically, power is generated from a motor gear on the motor shaft of the drive motor 41 and a lower large-diameter gear 112 that rotates via a small-diameter gear 111.

  That is, as shown in FIG. 3A, a deformed disk-shaped cam plate 114 is rotatably arranged coaxially on the outer side of the lower large-diameter gear 112. A cam follower 115 is engaged with the outer peripheral portion of the cam plate 114.

  The cam follower 115 is fixed to the middle portion of the rod-shaped cam follower support plate 116, and the cam follower support plate 116 is pivotally supported around the horizontal axis by the storage bag forming box 40, and its distal end is It can rotate up and down.

  As shown in FIG. 3 (a), a first connecting member 117 is continuously connected to the tip of the first connecting member 117, and a horizontal axis is mounted on a mounting support plate 118 disposed in a pair of left and right in the storage bag forming box 40. A protruding piece 120 protrudes in the horizontal direction from one end of a horizontal rotating shaft 119 inserted in a freely rotating manner, and the upper end of the first connecting member 117 is rotatably connected to the protruding piece 120.

  Furthermore, the 2nd connection member 122 is extended upwards from the horizontal rotating shaft 119, and the upper end part is connected via the connection mechanism 123 shown below arrange | positioned in the storage bag formation box 40 upper part.

  As shown in FIG. 4, the coupling mechanism 123 is provided with a vertical support plate 124 that supports the bag internal air discharge device 14 and the gusset forming body 15 above the storage bag forming box 40 protruding left and right from the conveyor surface. doing. The vertical support plate 124 is provided with first left and right connecting rods 125 extending in the lateral direction. End support plates 126 are provided at the left and right ends of the first left and right connecting rods 125, respectively. A roller member 127 is fixed to the bottom surface of the support plate 126, and the roller member 127 is slidable in a guide groove 128 provided on the upper surface of the horizontal support 135.

  As shown in FIG. 5, a pair of left and right second left and right connecting rods 130 are extended from the fixed support base 129 fixed in the storage bag forming box 40 to the left and right sides, and the second left and right connecting rods 130 are horizontally supported. 135 is inserted so as to be slidable to the left and right sides. A stopper plate 131 for the horizontal support 135 is connected to the left and right ends of the second left and right connecting rod 130.

  And the connection piece 132 is arrange | positioned under the horizontal support body 135, and the upper end part of the said 2nd connection member 122 is connected with the connection piece 132 so that rotation is possible.

  As described above, the left / right approach / separation mechanism 108 includes the drive motor 41 → the small diameter gear 111 → the lower large diameter gear 112 → the cam plate 114 → the cam follower 115 → the cam follower support plate 116 → the first connecting member 117 → the protruding piece 120 → the horizontal. Rotating shaft 119 → second connecting member 122 → horizontal support 135 → roller member 127 → end support plate 126 → first left and right connecting rod 125 → vertical support plate 124 → bag internal air discharge device 14 to gusset forming body 15 By transmitting the motive power, the cylindrical film 12 can be moved closer to and away from the tubular film 12.

  The left and right approach / separation mechanism 108 is described with respect to the mechanism on the right storage bag forming box 40 shown in FIG. 4, and the left side mechanism is omitted in the drawing, but basically has the same structure on the left and right. Have.

  Then, the bag inner air discharge device 14 is brought close to the left and right side surfaces of the tubular film 12 by the left / right approach / separation mechanism 108, and the first gusset claw 103 to the third gusset claw 105 of the gusset forming body 15 are simultaneously moved to the tubular film. 12 can be brought into contact with the left and right side surfaces.

  In this embodiment, the bag internal air discharge device 14 and the gusset forming body 15 are configured to approach and separate from the tubular film 12 from the drive motor 41 via the left and right approach / separation mechanism 108. For example, the bag internal air discharge device 14 and the gusset forming body 15 may be configured to approach and separate from the tubular film 12 using an electric actuator.

(Back and forth movement mechanism)
Since the bag internal air discharge device 14 and the gusset forming body 15 are connected via a U-shaped interlocking member 133 in the storage bag forming box 40, and the interlocking member 133 is connected to the heat seal portion 13, It is configured to be movable back and forth in conjunction with the movement of the heat seal portion 13.

  In other words, the rotational movement of the large-diameter gear from the drive motor 41 can be converted into the back-and-forth reciprocation of the interlocking member 133 that moves back and forth with the heat seal portion 13 by a cam mechanism (not shown) in the storage bag forming box 40. .

  Then, the first left and right connecting rods 125 inserted into the interlocking member 133 reciprocate back and forth in conjunction with the reciprocating motion of the interlocking member 133, thereby allowing the bag internal air discharge device 14 to pass through the first left and right connecting rods 125. The gusset forming body 15 is configured to be able to reciprocate in the front-rear direction.

  As described above, the storage bag forming section B of the present invention interlocks with the box motion of the top sealers 35 and 36 and presses the pressing plate 82 of the bag internal air discharge device 14 and the second plate against the tubular film 12 on the conveyor. It is comprised so that the 1st-3rd gusset nail | claw 105 can adjoin.

(Food storage bag forming method in this embodiment)
Hereinafter, the food storage bag forming method of the hamburger H will be described in detail.

  First, as shown in FIG. 2, the resin film 26 is supplied from the film roll 30 to the bag making device 29 in a state where the resin film 26 is continuously formed in a band shape.

  Then, as shown in FIG. 2, the lower overlapping portion 16 is heat-sealed by the center sealing means 27 while being formed into the tubular film 12 by the bag making device 29, thereby flowing toward the heat sealing portion 13.

  Further, as shown in FIG. 2, the manufactured hamburger H is charged from the start end of the food semi-exclusive conveyor 21, and the hamburger H thus charged is adjusted in height by the height adjusting mechanism 31, and then the bag making machine. 29. And the hamburger H is thrown into the cylindrical film 12 shape | molded by the bag making machine 29 at the cylinder shape, and flows in the direction of the heat seal part 13. FIG.

  That is, as shown in FIG. 2, the hamburger H is transported to the storage bag forming part B by the food carry-in conveyor 21 together with the tubular film 12 while being housed in the supplied long tubular tubular film 12. Is done. Depending on the form of the bag, a plurality of hamburgers H are supplied into the tubular film 12 with a predetermined interval (for example, the length in the longitudinal direction of the single food storage bag 11).

  FIG. 9 shows a state where the hamburger H main body is supplied to the distal end side of the tubular film 12 on the storage bag forming portion B.

  As shown in FIG. 9, the long cylindrical tubular film 12 is in a state where the tip is heat-sealed. This state is a state immediately after the single food storage bag 11 is formed from the tubular film 12 and is a process in the middle of continuous processing. Here, the first step of the food storage bag forming method of the present invention is here. Will be described.

  In the first step, the bag internal air discharge device 14 and the gusset forming body 15 are located away from the front end of the tubular film 12.

  FIG. 10 shows a state in which the bag internal air discharge device 14, the second gusset claw 104, and the third gusset claw 105 are moved closer to the left and right sides of the tubular film 12 by the back-and-forth movement mechanism 109.

  Next, as shown in FIG. 10, the bag internal air discharge device 14, the second gusset claw 104, and the third gusset claw 105 approach the tip of the tubular film 12 by the back-and-forth movement mechanism 109.

  FIG. 11 shows a state in which the bag internal air discharge device 14 and the gusset forming body 15 are close to the tubular film 12.

  As shown in FIG. 11, the second gusset pawl 104 has a cylindrical shape behind the hamburger H by causing the bag internal air discharge device 14 and the gusset forming body 15 to approach both sides of the cylindrical film 12 by the lateral approach / separation mechanism 108. The third gusset claw 105 can be brought into contact with both side surfaces of the tubular film 12 in front of the hamburger H.

  FIG. 12 is an explanatory view showing a state where the bag internal air discharge device 14 sandwiches a portion where no food is located from the tip seal portion 140 of the tubular film 12.

  Then, a portion where the hamburger H is not located from the tip seal portion 140 of the tubular film 12, that is, a substantial majority R of the food storage bag 11 alone where the hamburger H is not located, is a pair of upper and lower pressing plates of the bag internal air discharge device 14. 82 is brought close to the height approximately on the center line S of the tubular film 12 and sandwiched.

  In this manner, the bag internal air in the tubular film 12 can be discharged from the front part to the rear part that has not been sealed yet in the upstream direction from the heat seal part 13. That is, the bag internal air discharge device 14 in the present embodiment can be clamped evenly up and down with reference to the approximate center line S of the height of the tubular film 12.

  And the part from the front-end | tip seal | sticker part 140 of the cylindrical film 12 to the hamburger H can be made into the flat state without a residual bag internal air. Furthermore, it can be set as the structure which can simplify performing the folding process of the longitudinal direction front part performed after this. Therefore, the food storage bag 11 has the effect that the substantially majority portion R can be packaged in a flat shape.

  FIG. 13 is an explanatory diagram of a process for applying a heat seal to the rear end side of the food storage bag 11 in the heat seal portion 13.

  Further, the holding process of the bag internal air discharge device 14 is released, and the upper and lower top sealers 35 and 36 are brought into an approaching state. Then, the rear end portion of the tubular film 12 is heat-sealed between the upper and lower top sealers 35 and 36. At the same time, the front end of the next tubular film 12 is also heat sealed.

  With the box motion, the upper and lower top sealers 35 and 36 are moved closer to each other by a predetermined distance from the upstream side. This movement time is a heat treatment time.

  As shown in FIG. 13, gussets g <b> 2, g <b> 31, and g <b> 32 can be formed on the left and right side surfaces of the tubular film 12 by the second gusset claw 104 to the third gusset claw 105. That is, in the second gusset claw 104, an inward gusset g2 is formed with the point where the tip of the claw is in contact as a turning point.

  In the third gusset claw 105, the folded gusset g31 having a shape in which the upper and lower portions are completely folded inwardly on the approximate center line S in the cross-sectional view at the portion sandwiched by the pressing plate 82. Is formed. In other locations where the hamburger H does not exist, an inward gusset g32 is formed with the location where the tip of the third gusset claw 105 abuts as a turning point.

  In the first gusset claw 103, the inward gusset g1 is formed on the left and right side surfaces of the tubular film 12 on the horizontal line by the substantially rectangular piece 99 provided at the tip thereof, so that both side surfaces of the tubular film 12 are inward. It becomes easy to bend in the direction, and it is easy to make it a flat form by sandwiching the substantially majority portion R thereafter.

  FIG. 14 is an explanatory view showing a state in which heat sealing and cutting are performed.

  Thereafter, the blade surface of the bag cutter 42 disposed in the middle portion of the upper top sealer 35 protrudes, and the tubular film 12 is cut at a predetermined length, whereby a single food in which food is packaged. The storage bag 11 is formed.

  In this way, the tubular film 12 at the front-rear position of the stored hamburger H is thermally welded and cut to form the food storage bag 11 as a single hamburger storage bag. The front and rear lengths of the single bag are formed to be about 1.5 times the diameter of the hamburger H.

  FIG. 15 is an explanatory view showing a state in which the upper and lower top sealers 35 and 36 are separated from each other.

  Thereafter, the upper and lower top sealers 35 and 36 are separated from each other, and the bag internal air discharge device 14 and the gusset forming body 15 are returned to their original positions.

  FIG. 16 is an explanatory view showing a transfer state of the completed food storage bag 11.

  The completed food storage bag 11 is transferred by a carry-out conveyor (not shown) to the next folding processing unit.

  As described above, the hamburger H is packaged in the single food storage bag 11 by the storage bag forming portion B.

  Thus, since the storage bag formation part B in this embodiment is comprised so that the bag internal air in the cylindrical film 12 may be discharged | emitted when forming the food storage bag 11, it is a folding process performed after this. It has the effect that it can be folded nicely.

  That is, the bag internal air discharge device 14 of the present invention sandwiches the bag portion from the front end seal portion 140 of the tubular film 12 to the hamburger H by the pair of left and right pressing plates before the heat seal processing of the heat seal portion 13. Since the air inside the bag can be extracted, the air inside the bag within the bag portion can be surely extracted and a flat form can be obtained.

  And it can be made the form which is easy to fold the said bag part, and can be made into the form of the food storage bag 11 in which the appearance was prepared as a shipment product. That is, it is possible to make the bottom surface of the storage bag folded at the bottom surface into a substantially flat state, and to arrange and display the storage bags side by side.

  The process of folding the substantially majority portion R below the food storage bag 11 can be performed manually, and a storage bag folding portion C as shown in FIG. 1 can also be used.

(Overall structure of storage bag folding part C)
FIG. 17 is a side view showing an overall configuration example of the storage bag folding portion C according to the present embodiment. The storage bag folding part C shown in FIG. 17 is arranged downstream of the storage bag forming part B as shown in FIG.

  The storage bag folding part C includes a pressing plate opening / closing mechanism 201, a storage bag holding mechanism 202, a folding plate contact mechanism 203, an elevating mechanism 204, an extruding mechanism 205, a printing seal attaching mechanism 206, an unloading mechanism 207, a driving mechanism 302, An upper conveyor 401, a lower conveyor 402, and the like are provided.

  The pressing plate opening / closing mechanism 201 includes a pair of lower pressing plate 211, upper pressing plate 212, elevating columns 213, 214, and the like. By opening and closing the pair of upper and lower pressing plates 211 and 212, the food container 11 can be opened and closed with a substantially majority portion R (hereinafter also referred to as “other-side substantially half portion R”, see FIG. 20) from above and below. Press in between.

  The lower pressing plate 211 is a flat plate attached to the upper end portion of the lifting column 213 that can be moved up and down by the drive mechanism 302. On the other hand, the upper pressing plate 212 is a flat plate attached to the upper end portion of the lifting column 214 that can be lifted and lowered independently of the lifting column 213 by the lifting mechanism 302.

  When the pressing plate opening / closing mechanism 201 sandwiches the other major portion R of the food storage bag 11 from above and below by the pair of upper and lower pressing plates 211, 212, the lower pressing plate 211 rises to the approximate vertical center of the food storage bag 11. The upper pressing plate 212 is set and controlled so as to descend to the substantially vertical center of the food storage bag 11.

  The storage bag holding mechanism 202 includes a lifting column 221 that can be moved up and down by a drive mechanism 302 and a flat holding plate 222 that is attached to the lower end of the lifting column 221. The storage bag holding mechanism 202 is for pressing and holding the food storage bag 11 placed on the base 241 from above.

  The folding plate abutting mechanism 203 includes a lifting column 231 that can be moved up and down by the drive mechanism 302 and a folding plate 232 that is attached to the upper end of the lifting column 232 as viewed from the side. The folding plate abutting mechanism 203 abuts the folding plate 232 at the folding position in order to bend the food storage bag 11 placed on the base 241 with the proximal end of the other-side major portion R being the folding position. It is something to be made.

  The elevating mechanism 204 includes a base 241 having a square plate shape in plan view on which the food storage bag 11 is placed, a base 241 attached to the upper end, and an elevating column 242 that can be raised and lowered by the drive mechanism 302. The lifting mechanism 204 is for transferring the food storage bag 11 that has been transferred to the lower transfer conveyor 402 to the upper transfer conveyor 401.

  As will be described in detail later, in the predetermined step, the folding plate 232 (folded plate contact mechanism 203) and the base 241 (elevating mechanism 204) are configured to rise together.

  The extrusion mechanism 205 includes an extrusion plate 251 that can be moved in the horizontal direction by the drive mechanism 302. The pushing mechanism 205 is for transferring the food storage bag 11 raised by the elevating mechanism 204 to the upper transfer conveyor 401.

  The extruded plate 251 is formed of a plate material having an inverted L shape in side view and having a ceiling surface and a side wall surface. The extruded plate 251 is movable along the guide groove 252 in the horizontal direction.

  The printing sticker attaching unit 206 is disposed below the upper transport conveyor 401, and stores food that is transported on the upper transport conveyor 401 with a print sticker (not shown) on which the manufacturer, raw materials, and control date are printed. Affix to bag 11 from below.

  The printing sticking unit 206 includes a tape holding roller 261 that holds a tape for printing seal, a tape feeding roller 262 for feeding the tape held by the tape holding roller 261, and a tape fed from the tape feeding roller 262. A tape cutter (not shown) that cuts the tape at a predetermined length, adsorbs the cut tape (printing sticker), and sticks and fixes the tape to the bottom surface of the food storage bag 11 that is transported by the upper transport conveyor 401 A landing portion 263 is provided.

  The unloading mechanism 207 is a mechanism for unloading that is provided at the end portion of the upper conveyor 401, and is configured by connecting a plurality of rotating rollers 271 to an inclined surface whose end portion is located below the start end portion. The food storage bag 11 that has completed a series of steps is unloaded from the unloading mechanism 207.

  The drive mechanism 302 is disposed below the stage 301. By the drive motor 303, the up-and-down pressing plates 211 and 212, the storage bag holding mechanism 202, the folding plate abutting mechanism 203, and the lifting and lowering mechanism 204 are lifted and pushed out. This is a drive mechanism for controlling the horizontal movement operation and the like.

  The upper conveyance conveyor 401 is for conveying the food storage bag 11 (see FIG. 20 and the like) raised by the elevating mechanism 204. The lower transfer conveyor 402 is for carrying the food storage bag 11 that has passed through the storage bag forming section B.

  By the structure shown above, in the storage bag folding part C which concerns on this embodiment, the process which folds the food storage bag 11 is performed. Hereinafter, with reference to FIG. 18, the figure which looked at the storage bag folding part C from the upper surface is demonstrated in detail.

(Top view of storage bag folding part C)
FIG. 18 is a top view illustrating an example of the storage bag folding portion C according to the present embodiment.

  As shown in FIG. 18, the upper transport conveyor 401 includes side conveyors 412 </ b> A and 412 </ b> B on the left and right sides in the transport direction of the transport surface 411 that transports the food storage bag 11.

  The side conveyor 412A is wound around a driving drum 413A that rotates about a vertical axis, a driven drum 414A that rotates about a vertical direction, and two auxiliary rollers 415 disposed between the driving drum 413A and the driven drum 414A. It has a rotated endless conveyor belt 416A. The conveyor belt 416A is disposed so that the belt surface is vertical. One side conveyor 412B includes a driving drum 413B that rotates about a vertical axis, a driven drum 414B that rotates about a vertical direction, and an endless conveyor belt that is wound between the driving drum 413B and the driven drum 414B. 416B. The conveyor belt 416B is also disposed so that the belt surface is vertical.

  With the configuration described above, the food storage bag 11 (not shown in FIG. 18) is conveyed along the pair of left and right guide rails 417 so as to be pushed forward by the side conveyors 412A and 412B.

(Food storage packaging method)
Hereinafter, the food storage packaging method by the storage bag folding part C is demonstrated in detail based on drawing.

  In addition, by the above-mentioned product supply part A and the storage bag formation part B (refer FIG. 1), it is also called the food storage bag 11 shown in FIG. 19, ie, the substantially majority part (henceforth "one side substantially majority part"). ) A hamburger H as an example of a food lump is stored in L, and a food storage bag 11 is formed in which the remaining substantially majority (hereinafter, also referred to as “other-side substantially majority”) R is blank. It shall be.

(First step: carry-in step)
FIG. 19 is a diagram showing a first step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In the first step, the food storage bag 11 is transported on the lower transport conveyor 402.

  First, the food storage bag 11 in which the other-side substantially-major-half portion R is blanked by extracting the air inside the bag by the storage bag forming unit B is put into the lower transfer conveyor 402, and the lower transfer conveyor 402 is moved over the lower transfer conveyor 402. It is transferred toward the base 241 side. Then, it stops at the front end of the lower transfer conveyor 402.

(Second step: base mounting step)
FIG. 20 is a diagram showing a second step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In the second step, the food storage bag 11 that has been transported on the lower transport conveyor 402 is placed on the base 241.

  When the food storage bag 11 stops at the front end of the lower transport conveyor 402 in the first process described above, the process proceeds to the next second process, and the pushing plate 206 disposed above the lower transport conveyor 402 is moved by the drive mechanism 302. After being driven and turned to face in the vertical direction, the food storage bag 11 moves in parallel toward the rear surface (see the arrow in the figure), and pushes the food storage bag 11 toward the base 241. Thereby, as shown in FIG. 20, the food storage bag 11 is placed on the base 241.

  In the second step, the lifting column 221 of the storage bag holding mechanism 202 is lowered (see the arrow in FIG. 21), and the holding plate 222 pushes the upper surface of the food storage bag 11 placed on the base 241 from above. Controlled to stop. As a result, the food storage bag 11 is held between the holding plate 222 and the base 241.

(Third step: air venting step, folded plate contact step)
FIG. 21 is a diagram showing a third step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In this 3rd process, the other side substantially majority part R of the food storage bag 11 is flattened by pressing up and down with the up-and-down pressing plates 211 and 212 from the upper and lower outside, and forms flat part R1.

  That is, in the third step, the upper and lower pressing plates 211 and 212 provided at the front of the base 241 move the other major portion R of the food storage bag 11 from the upper and lower outer sides as shown by the arrows in FIG. Press in between. If it does so, while the air contained in the other side substantially majority part R of the food storage bag 11 will flow into the one side substantially majority part L side, the other side substantially majority part R will be flattened and will become the flat part R1.

  Here, the vertical position pressed by the vertical pressing plates 211 and 212 is the height in the vertical direction (vertical) substantially intermediate position of the other major portion R of the food storage bag 11 in which the hamburger H is stored. By making the flat portion R1 extend in a substantially intermediate position in the vertical direction of the rounded substantially half portion L, the appearance of the food storage bag 11 after the flat portion R1 is bent in the subsequent process is beautiful. Can be.

  As described above, in the third step, the air inside the other major portion R is vented in the process of flattening the other major portion R of the food storage bag 11 to form the flat portion R1. That is, the air sealed in the other side substantially majority portion R is released in the direction of the one side substantially majority portion L in which the hamburger H is stored.

  In this third step, the lifting column 231 of the folding plate abutting mechanism 203 is raised (see the arrow in FIG. 21) simultaneously with or after the sandwiching by the upper and lower pressing plates 211 and 212 (see the arrow in FIG. 21), and the base of the flat portion R1 The end is set to a folding position (base end folding position) F, and the front end of the folding plate 232 is controlled to be in contact with the base end folding position F from below. Note that the base end folding position F indicates a substantially intermediate position in the vertical direction of the food storage bag 11.

  Accordingly, it is possible to prevent the air escaped to the one-side substantially majority portion L by the upper and lower pressing plates 211 and 212 from returning to the flat portion R1, and the base end folding position F is a step described later. It can be a crease when the flat portion R1 is bent. Since the food storage bag 11 is pressed from above by the storage bag holding mechanism 202, the food storage bag 11 is not lifted upward by the folded plate 232.

  In the first step (loading step) described above, the hamburger H as a food lump is stored in the food storage bag 11 in which the flat portion R1 has already been formed, that is, one side substantially majority L, and the other other side substantially majority. By carrying in the food storage bag 11 in which the flat portion R1 is formed in the portion R, the air venting step in the third step may be omitted.

(4th process: bending process)
FIG. 22 is a diagram illustrating a fourth step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In the fourth step, the flat portion R1 formed in the third step is bent in the vertical direction.

  In the fourth step, the storage bag holding mechanism 202, the folded plate contact mechanism 203, and the lifting mechanism 204 are raised at the same speed, that is, in a state where the flat portion R1 is sandwiched by the pressing plate opening / closing mechanism 201 (that is, The food storage bag 11 is lifted so that the base 241 and the transport surface 411 of the upper transport conveyor 401 are at the same height.

  Then, the flat portion R1 of the food storage bag 11 is bent vertically from the base end folding position F along the side surface of the folding plate 232, and this flat portion (hereinafter, referred to as “the drooping flat portion R2” is distinguished from the flat portion R1). Also, the food storage bag 11 bent in the vertical direction is transferred to the height of the conveying surface 411.

  In this way, the one-end majority portion L and the drooping flat portion R2 of the food storage bag 11 appear to be bent in a substantially L shape. The flat portion R1 that hangs down in a substantially L shape becomes a suspending flat portion R2, and the bending step of the fourth step ends. In addition, you may perform the cancellation | release of contact | abutting by the folding plate 232 shown in the 5th process mentioned later in a main folding process.

(5th process: hanging flat part fixing process 1)
FIG. 23 is a diagram showing a fifth step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In this fifth step, the food packaging bag 11 is pushed onto the conveying surface 411 of the upper conveying conveyor 401 by the pushing mechanism 205.

  After the food storage bag 11 is raised in the above-described fourth step to form the hanging flat portion R2, in this fifth step, first, as shown by the arrows in FIG. .

  Further, the folding plate 232 is moved downwardly to release the contact by the folding plate 232. Thereby, the drooping flat portion R2 is in the state shown in FIG. 22, that is, a drooping state in which the drooping flat portion R2 is bent downward from the base end folding position F by its own weight.

  Thereafter, the push-out plate 251 of the push-out mechanism 205 pushes the food storage bag 11 from the rear part toward the upper transport conveyor 401. That is, the pushing plate 251 is brought into contact with the rear portion of the food storage bag 11 and then pushed out to the start end portion of the upper upper transfer conveyor 401. Then, as shown in FIG. 23, the drooping flat portion R <b> 2 is folded into the outer bottom surface B side of the hamburger H in the food storage bag 11.

  Specifically, the folding operation of the drooping flat part R2 is performed as follows. That is, the food storage bag 11 with the drooping flat portion R2 formed at the front end is conveyed by the upper conveyer 401, and the drooping flat portion R2 is brought into contact with the receiving plate 418 standing in the traveling direction. In this state, the food storage bag 11 further advances in the transport direction above the receiving plate 418, so that the drooping flat portion R2 is folded in the direction of the outer bottom surface B of the food storage bag 11 from the state in contact with the receiving plate 418. It becomes a state.

(6th process: hanging flat part fixing process 2)
FIG. 24 is a diagram illustrating a sixth step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In this sixth step, the hanging flat portion R2 is superposed and fixed on the outer bottom surface B of the food storage bag 11 by sticking a printing seal (not shown) to the lower portion of the food storage bag 11.

  In this process, the food storage bag 11 is transported on the transport surface 411 by the side conveyors 412A and 412B configured as a pair of left and right, and between the hanging flat part R2 and the outer bottom surface B bent in the fifth process described above. A print seal (not shown) is stuck from below by the print sticker sticking part 206 (tape adsorption / sticking part 263). Thereby, the drooping flat portion R2 is superposed and fixed on the outer bottom surface B of the food storage bag 11, and the packaging of the hamburger H is completed.

  Further, in this sixth step, in order to perform a series of processing for the food storage bag 11 that is transported next on the lower transport conveyor 402, as shown by the arrows in FIG. The mechanism 204 is lowered to return to the state of FIG.

  In addition, in this 6th process, although the drooping flat part R2 is superposed | polymerized and fixed to the outer bottom face B by sticking a printing sticker from the downward direction, it is not limited to this case. For example, the hanging flat portion R2 may be polymerized and fixed by other methods such as heat welding to the outer bottom surface B.

(7th process: Unloading process)
FIG. 25 is a diagram showing a seventh step of the food storage and packaging method by the storage bag folding unit C according to the present embodiment. In the seventh step, the food storage bag 11 with the printing sticker attached and packaging is carried out.

  That is, the food storage bag 11 that has been packaged is continuously transferred to the end of the transport surface 411 by the side conveyors 412A and 412B, and then transported through the transport mechanism 207.

  Through the steps shown in FIGS. 19 to 25, the food storage bag 11 as a form of the shipment is created by the food storage and packaging method according to this embodiment. Thereby, the flat part R1 of the bag of the substantially majority portion formed when the air is removed from the bag containing the food chunks such as rice balls and hamburgers is placed on the bottom surface B of the other side substantially half portion R containing the food chunks. Folded and superposed and fixed, the shape of the whole packaging by the food storage bag 11 reveals a beautiful circle that fits the food lump, and the folded flat part R1 is superposed on the bottom B of the food lump and fixed and stored food It can also serve as a mass mounting cushion.

  In addition, according to the food storage and packaging method according to the present embodiment, a folding plate abutting step for abutting the base end folding position of the flat portion with the folding plate, and a folding step for forming the drooping flat portion and folding from the base end folding position. The hanging flat portion fixing step includes folding and fixing the bent flat portion to the outer bottom surface of the storage bag. Therefore, the flat part used for air venting is finally folded into the outer bottom surface of the storage bag to reduce the storage of air in the storage bag as much as possible to achieve the function of suppressing the oxidation of stored food, and to provide an overview of the storage bag. It has the effect that it can be formed into a beautiful circle along the outer shape of the food mass as much as possible. Furthermore, the food bag is rolled in the storage bag because the storage bag and the food mass are almost closely packed. There is no movement and damage, and the volume of the entire storage bag approaches the food lump volume as much as possible, and there is an effect that the conveyance added value is increased by reducing the conveyance volume.

  As mentioned above, although embodiment of this invention was described, the said embodiment showed one of the application examples of this invention, and in the meaning which limits the technical scope of this invention to the specific structure of the said embodiment. Absent. Various modifications can be made without departing from the scope of the present invention.

  For example, in the above embodiment, the folding plate contact mechanism 203 (see FIG. 21) has been described with respect to the configuration in which the proximal end folding position F of the flat portion R1 is contacted by the front end of the folding plate 232 from below. However, the present invention is not limited to this case. For example, in addition to the folding plate 232 to be contacted from below, a folding plate to be contacted from above may be provided so that the base end folding position F is sandwiched from above and below by these upper and lower folding plates. In this case, in the fifth step shown in FIG. 23, the upper and lower folded plates are moved upward and downward to release the clamping by the upper and lower folded plates.

11 Food storage bag 211 Lower pressing plate 212 Upper pressing plate 232 Folding plate 241 Base B Outer bottom surface F Base end folding position H Hamburger (food chunk)
L One side substantially majority R Other side substantially half R1 Flat part R2 Drooping flat part

Claims (7)

A folding plate is placed at the proximal folding position of the flat portion formed in the substantially majority portion of the other side of the storage bag in which the food mass is stored in the substantially majority portion on one side and the flat portion is formed on the other majority portion on the other side. A folded plate contacting step for contacting;
Lifting the storage bag, bending the flat part from the base end folding position and hanging down, forming a hanging flat part and releasing the contact of the folded plate;
A food storage and packaging method comprising: a drooping flat portion fixing step of folding the drooping flat portion on the outer bottom surface side of the storage bag and superimposing and fixing to the outer bottom surface. The flat portion is formed to extend to a substantially intermediate position in the vertical direction of the storage bag,
The food storage and packaging method according to claim 1, wherein in the folding plate abutting step, the folding plate is brought into contact with the base end folding position which is a substantially intermediate position in the vertical direction of the storage bag.   An air vent that vents air in the other-side substantially majority by storing food chunks in the one-side substantially majority and pressing and flattening the other-side substantially majority from the upper and lower sides to form the flat portion. The food storage and packaging method according to claim 1, further comprising a step.   The food storage and packaging method according to claim 3, wherein a pressing plate opening / closing mechanism that allows the upper and lower pressing plates to be opened and closed is used as pressing means for pressing the other majority of the other side of the storage bag from above and below.   The food storage and packaging method according to claim 1, wherein when lifting the storage bag in the folding step, the base on which the storage bag is placed and the folding plate are raised together.   The food storage and packaging method according to claim 1, wherein the drooping flat portion is formed by being bent downward from the base end folding position by its own weight by releasing contact of the folded plate.   When the hanging flat portion is bent and superposed on the outer bottom surface of the storage bag, the hanging flat portion is formed in the storage bag by advancing the storage bag in a state in which the hanging flat portion is formed. The food storage and packaging method according to claim 1, wherein the food storage and packaging method is performed by folding the outer bottom surface.

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