JP4373701B2 - Gusset packaging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gusset wrapping machine that inserts gussets into a packaging material from the side when end-sealing a packaging material for wrapping a product in a cylindrical shape and packaging the bag.
[0002]
[Prior art]
Conventionally, for packaging machines that wrap bulk products such as Japanese confectionery, bread, and rice with packaging materials such as packaging films, products that are fed in the horizontal direction are web-like packaging materials that are fed in the same horizontal direction. By enclosing in a cylindrical shape, heat-sealing the combined edges of the cylindrical packaging material to give a center seal, and further end-sealing the packaging material before and after the packaging material feed direction, A horizontal bag wrapping machine is used that wraps a bag with a so-called three-way seal. For bulk products, a horizontal packaging machine can be easily fed into a cylindrical packaging material without damaging the product, rather than a vertical packaging machine.
[0003]
In horizontal pillow or reverse pillow wrapping machines, if the product is a rice ball or square lump food, the product should be placed in a stable posture with the widest surface at the bottom and without risk of collapse. Supplied inside. On the other hand, in a store, the packaging body has an upright posture with the bottom of one of the narrow but narrow surfaces of the product in consideration of appearance, appeal, and orderly and efficient display. Often displayed side by side. In this case, the surface without the seal on the side opposite to the side on which the center seal has been applied is the front surface, and usually the front side is printed on the product. In such a standing posture, both ends of the end seal part spread laterally in a normal three-way seal, which causes problems such as bulkiness and interference with the adjacent package during display, making space-saving and orderly display difficult. It is. Therefore, an end seal is applied in a state where the gusset is folded from the side of the bag, so that the bag has a compact shape in accordance with the shape of the product. Even when the product is a rose product, it can be displayed in an upright position, so in a bag package manufactured by a vertical bag making and filling machine, it is cylindrically wrapped at a position close to the end seal part on the bottom side. A gusset fold is inserted into the material from the side.
[0004]
As a confectionery packaging, a continuous packaging method using a three-side seal / pillow packaging machine has been proposed (see Patent Document 1). In this packaging method, each package is separated by taking a long length between the adjacent end seals of the packages adjacent to each other in the feed direction of the wrapping paper, and cutting the wrapping paper with a cutter at a position between the end seals. The The end of the wrapping paper extending outside the end seal is disposed at a position downstream of the end of the end seal by several packs, that is, at a position where the end seal does not interfere with the operation of the end seal. It is lifted and folded by a pusher or a guide that operates in synchronization with the conveyance. Further, the end portion of the folded wrapping paper is pressed against the wrapping body by a pressing tool, thereby creating a Japanese-style wrapping feeling similar to that of a gift wrap. The wrapping paper is folded at the time of paper feeding, and a gusset is folded into the wrapping paper by applying a folding plate along the fold.
[0005]
However, when the gusset is folded, if the tubular packaging material is not sufficiently inflated, the gusset claw is pressed against the gusset claw and folded, resulting in an incomplete or incomplete fold. May be. In addition, if the gas is only fed into the cylindrical packaging material, the cylindrical packaging material usually does not occupy the center seal part directly above the center and swell symmetrically vertically and horizontally. It usually swells in shape. In such a case, a stable and good-looking gusset cannot be formed even if the gusset claw folds the cylindrical packaging material.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 61-11111 (lower column on page 2, FIGS. 3-5, 9-10)
[0007]
[Problems to be solved by the invention]
Therefore, when end-sealing the packaging material that wraps the product in a bag and packaging it in a bag, in the gusset packaging machine that inserts the gusset from the side of the packaging material, the cylindrical packaging material is properly inflated. There is a problem to be solved in that it is possible to perform proper folding with a gusset nail.
[0008]
An object of the present invention is to provide an appropriate gusset with a simple structure in a gusset wrapping machine that inserts a gusset from the side of a packaging material when the packaging material for wrapping the product in a cylindrical shape is end-sealed and packaged in a bag. It is an object of the present invention to provide a gusset wrapping machine that can be folded and can be stably finished in any bag package.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, a gusset packaging machine according to the present invention includes a supply conveyor that supplies products in a lateral direction, a former that forms a web-shaped packaging material into a cylindrical packaging material with both side edges thereof facing upward, A paper feeding means for feeding the cylindrical packaging material in the same lateral direction as the supply direction of the product, a center sealer for forming a center seal portion by sealing the both side edges of the cylindrical packaging material in the shape of a palm; conveyor, the center the tubular packaging material in the end sealers performs the end seal surrounding the product is disposed on the downstream side of the sealer, and the end for conveying the tubular packaging material surrounding the product on a placement state the Gazette claws put Gazette folding laterally to said tubular packaging material that operates in synchronism with the operation of the end sealers are arranged in connection with the sealer has end seals are subjected For example, the tubular packaging material the tubular packaging material the inflator that qi means from inside the feed gas into and distribution wherein on the transport conveyor is formed like a tunnel between said center sealer and said end sealer A guide slit configured to shape the bulging shape of the tubular packaging material passing through the interior in a manner that follows the inner shape, and a guide slit through which the center seal portion can pass above the shaping member The guide slit is formed by tilting the passing center seal part toward the shaped cylindrical packaging material. Also, the air supply means may be a pipe feed opening to the inlet of the tubular packaging material.
[0010]
According to this gusset packaging machine, the cylindrical packaging material wrapped with the product is inflated from the inside by the gas sent from the air feeding means. When the tubular packaging material swells, the swelled shape is shaped by the shaping member, so that it is possible to prevent the swelled shape from being distorted, for example, left-right asymmetry. Since the gusset claw inserts the gusset from the side with respect to the cylindrical packaging material in which such a bulge is appropriately shaped, a stable gusset fold shape can be obtained. Furthermore, since the end sealer performs end sealing on the tubular packaging material in which proper gusset folding is performed, a gusset packaging body having a stable shape can be obtained.
[0011]
According to the gusset machine, the center sealer forms a center seal portion by sealing the side edges of the web-like packaging material into butt-seamed, et Ndoshira has upper and lower end sealers portion, these end An end seal is applied by sandwiching a cylindrical packaging material between sealers. Gazette nails, are arranged in relation to the error Ndoshira. The gusset machine can be continuously packaging products is reversed pillow packaging machine as possible. When the product is an individual lump product, it is possible to avoid the collapse and damage of the product by feeding the product to the packaging machine by the conveyor in the lateral direction rather than throwing it by gravity. According to the gusset wrapping machine configured as a reverse pillow wrapping machine, the product is supplied by a supply conveyor, the web wrapping material is formed into a cylindrical wrapping material by a former, and the cylindrical wrapping material is supplied by the paper feeding means. The paper is fed in the same direction as the direction, both side edges of the web-shaped packaging material are sealed by the center sealer, the cylindrical packaging material that wraps the product is conveyed in a loaded state by the conveyor, and the cylindrical packaging material is the end A series of operations in which end sealing is performed by being sandwiched between upper and lower end sealers constituting the sealer are continuously repeated.
[0012]
In this gazette packaging machine, the integer form member to form a guide slit defeat before by Rue Ndoshiru to d Ndoshira the Center seal portion into the tubular packaging material side. In order to form a web-shaped packaging material into a cylindrical packaging material, it is often performed by connecting both side edge portions with center seal portions sealed in a palm shape. In order to provide a reliable and attractive end seal to the cylindrical packaging material having the center seal portion, in the present invention, the center seal portion is preliminarily processed to the side of the cylindrical packaging material. The cylindrical wrapping material is inflated from the inside by the inflow of gas from the air supply means, and the shaping member is provided so as to surround the cylindrical wrapping material and shape the swell in a manner that follows the inner shape . Therefore, any bag package can be inflated equally, and the center seal part moves to the shaping member that performs the shaping function as the cylindrical packaging material is fed. By forming a guide slit that tilts the palm-shaped center seal part to the side as it approaches the end sealer, the shaping member can also be used for the side tilt function of the center seal part, contributing to a reduction in the number of parts. be able to.
[0013]
In this gusset machine, Gazette pawl has a first gusset pawl put gusset fold the upstream side of the cylindrical packaging material of e Ndoshira, located downstream of the d Ndoshira and tubular that will be formed into a bag It can comprise from the 2nd gusset nail | claw which inserts a gusset from a side with respect to a packaging material. The first gusset claw and the second gusset claw may have the same shape and structure, but the first gusset claw has a wedge shape suitable for forming a bag bottom, and the second gusset claw has a flat plate shape suitable for forming a bag mouth. It can also be configured.
Further, in the gusset machine consists integer form member includes a top plate portion, and disposed on both sides of the top plate portion Contact retentivity plate portion and a pair of side plate portions which are formed integrally or separately plate Can be formed into a structure. Particularly, in the case of constituting the pair of side plate portions separately it can change the size of the shaping member according to the size of the tubular packaging material by adjusting the position.
Furthermore, in the gusset machine, moth Idosuritto, the upstream is formed as a standing gap capable of receiving the rafter-like centers seal portion has a standing state, gradually to either toward the d Ndoshira It can be formed as an inclined inclined gap.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a gusset packaging machine according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view showing an embodiment of a reverse pillow packaging machine to which a gusset packaging machine according to the present invention is applied, and FIG. 2 is a perspective view showing a main part including shaping means of the reverse pillow packaging machine shown in FIG. .
[0015]
The gusset wrapping machine according to the present invention is configured as a reverse pillow wrapping machine shown in FIG. 1 as a whole. As shown in FIG. 1, the reverse pillow packaging machine 1 is basically fed from a carry-in conveyor 2 that supplies the product A in the lateral direction, and a roll R that is arranged downstream of the carry-in conveyor 2 and below the conveyance path. The former 3 for forming the web-like packaging material Fw into a tubular shape, and the tubular packaging material Ft sandwiched between both side edges Fa, Fa aligned in the shape of a palm on the upper side of the tubular packaging material Ft formed by the former 3 The paper feed means 4 comprising a pair of paper feed rollers 5 and 5 that feed the product A in the same lateral direction as the supply direction of the product A, and both side edges Fa and Fa of the cylindrical packaging material Ft disposed downstream of the paper feed means 4 A center sealer 6 comprising a pair of heat seal rollers 7 and 7 for heat sealing, and an end sealer 8 disposed on the downstream side of the center sealer 6 to end seal the packaging material F between adjacent products A and A, It has. In the reverse pillow wrapping machine 1, since the product A is supplied in the lateral direction, when the product A is an individual lump-shaped article, it is preferable that the product is fed by the carry-in conveyor 2 in the lateral direction rather than being fed by gravity. A is not damaged or damaged when fed into the packaging machine, and the product A can be continuously packaged in the cylindrical packaging material Ft by a series of operations of the above components.
[0016]
In FIG. 1, the cylindrical packaging material Ft and the product A placed at regular intervals inside the cylindrical packaging material Ft are placed and conveyed on a belt conveyor 10 as a conveyor. The seal position by the end sealer 8 is fed. The paper feeding means 4 for feeding the cylindrical packaging material Ft is rotationally driven in synchronization with the belt conveyor 10. The end sealer 8 disposed on the downstream side of the center sealer 6 includes an upper end sealer portion 14 and a lower end sealer portion 15 that sandwich the cylindrical packaging material Ft from above and below at a position between adjacent products A and A. For example, it is driven by a driving means (not shown) so that the trajectory has a box motion indicated by an imaginary line. The end sealer 8 can incorporate a cutter 9 for cutting the cylindrical packaging material Ft. On the downstream side of the end sealer 8, an unloading belt conveyor 12 that is adjusted to the same height as the belt conveyor 10 is disposed, and the bag package P to which the end seal is applied is transferred to the belt conveyor 12. Are carried out. The belt conveyor 10 and the belt conveyor 12 transfer the cylindrical packaging material Ft in which the end portions 11 and 13 of both conveyors move back and forth and the product A is wrapped in accordance with the box motion of the end sealer 8. A so-called shuttle conveyor can be configured that is smooth and opens and closes in accordance with the sealing operation period.
[0017]
In the reverse pillow packaging machine 1, in order to stably form the gusset, the air feeding means 30 for sending the gas for inflating the cylindrical packaging material Ft from the inside is disposed in the vicinity of the former 3, preferably at an obliquely forward front side thereof. Has been. The air supply means 30 can be, for example, an air supply pipe that opens at the inlet of the cylindrical packaging material Ft as shown in the drawing, but is not limited to this, and a nozzle inserted into the blower or the cylindrical packaging material Ft. But you can. A gas 31 such as clean air from an air source (not shown) is blown from the air supply means 30 into the cylindrical packaging material Ft as indicated by an arrow. Since the downstream head of the cylindrical packaging material Ft is closed by the end sealer 8 being closed, the blown gas 31 causes the cylindrical packaging material Ft wrapped around the product A to expand from the inside.
[0018]
On the upstream side of the end sealer 8 and around the cylindrical packaging material Ft transferred on the belt conveyor 10, a shaping member 32 is provided for shaping the bulging shape when the cylindrical packaging material Ft is expanded by the gas 31. ing. The arrangement of the shaping member 32 is a position close to a region where a gusset fold by a gusset claw 40 described later is performed. As shown in FIG. 2, the shaping member 32 has a tunnel-like structure having a portal shape that surrounds the tubular packaging material Ft in cooperation with the belt conveyor 10. Shaping member 32, on the conveyor belt 10, it has a plate structure consisting of the top plate portion 33 and the pair of side plate portions 34 and 34 disposed on both sides of the top plate 33. Also includes a top plate portion 33 and the side plate portions 34, 34 have been integrally formed, also may be formed separately and attached to a suitable support. Although the shaping member formed integrally is easy to handle, it becomes a shaping member dedicated to the cylindrical packaging material Ft. The shaping members configured separately need to be adjusted with respect to each other, but can have a shaping action in accordance with the size of the tubular packaging material Ft. When the tubular packaging material Ft is inflated by the gas 31, the shaping member 32 regulates the free swelling of the tubular packaging material Ft so that the tubular packaging material Ft conforms to the inner shape of the square shape of the shaping member 32. Therefore, for example, it is possible to prevent a bulging into a distorted shape such as a left-right asymmetric shape such as a cross-sectional shape of an onion, and to exert the shaping action up to a portion where the gusset is to be folded.
[0019]
In relation to the end sealer 8, a gusset claw 40 for disposing a gusset from the side with respect to the cylindrical packaging material Ft to which end sealing is applied is provided. The gusset claw 40 includes a first gusset claw 41 that folds the gusset into the tubular packaging material Ft on the upstream side of the end sealer 8, and a tubular packaging material that is positioned on the downstream side of the end sealer 8 and formed in the bag. It can comprise from the 2nd gusset nail | claw 42 which folds a gusset from the side with respect to Ft. The first gusset claw 41 and the second gusset claw 42 may have the same shape and structure. However, as shown in FIG. 2, the first gusset claw 41 is formed in a wedge shape suitable for forming a bag bottom, and the second gusset claw 42 is It can also be configured in a flat plate shape suitable for forming the bag mouth.
[0020]
The gusset claw 40 is operated in synchronism with the operation of the end sealer 8 as in the case of the conventional gusset folding. That is, the gusset claw 40 advances to the tubular packaging material Ft before the end sealer 8 performs the sealing operation, inserts the gusset, and at an appropriate time such as immediately before or after the end sealer 8 performs the sealing operation. It operates at the timing of retreating from the tubular packaging material Ft. Since the gusset claw 40 folds the gusset from the side with respect to the cylindrical packaging material Ft whose swelling is appropriately shaped by the shaping member 32, a stable gusset fold shape is always obtained. Moreover, since the end sealer 8 applies end sealing to the tubular packaging material Ft in which proper gusset folding is performed, the gusset packaging body P having a stable shape and good appearance can be obtained.
[0021]
Forming the web-shaped packaging material Fw into the cylindrical packaging material Ft often depends on connecting the side edge portions Fa and Fa with a center seal portion Fc sealed in a palm-like shape. In the reverse pillow packaging machine 1, the center sealer 6 forms the center seal portion Fc. In order to give a reliable and attractive end seal to the cylindrical packaging material Ft having the center seal portion Fc, it is preferable to tilt the center seal portion Fc to the side in advance. Prior to the end seal by the end sealer 8, the shaping member 32 is formed with a guide slit 35 that tilts the center seal portion Fc toward the cylindrical packaging material Ft. Since the shaping member 32 is provided in such a manner as to abut against the tubular packaging material Ft and restrict the swelling, the shaping member 32 has a guide slit 35 in which the center seal portion Fc travels as the tubular packaging material Ft is fed. Can be formed. The center seal portion Fc has the guide slit 35 formed by receiving the palm-shaped center seal portion Fc that is in an upright state when the seal is formed on the upstream side and forming a gap that is inclined toward the end sealer 8. When it passes, it falls to the side. The top plate portion 33 of the shaping member 32 can be inclined to gradually reduce the height in accordance with the tubular packaging material Ft whose diameter is reduced as the gusset folding proceeds. Thus, the shaping member 32 can be used for shaping the packaging material as well as the side-inclining action of the center seal portion Fc, which can contribute to a reduction in the number of parts.
[0022]
In the above embodiment, the horizontal reverse pillow packaging machine 1 has been described as an example of the bag packaging machine. In the reverse pillow packaging machine 1, since both side edges Fa and Fa of the packaging material F are overlapped at the uppermost point of the cylindrical shape and heat sealed, the center seal part Fc is formed on the upper side. The margin portion Fb is bent toward the center seal portion Fc side by the pressure when the air nozzle 21 attached to the lower end sealer portion 15 blows air supplied from the air supply source 22 through the flexible supply pipe 23, and heat seal The end seal portion in a state where the temperature is high due to the residual heat due to is cooled immediately by the cooling action of the blowing air in a bent state, and the bending deformation is fixed. By fixing the deformation, a crease is attached to the end seal portion, and the work of pasting the label L supplied thereafter by the crease across the margin portion Fb and the bag body is facilitated. The label L can be bent and pasted by a label press 24 such as a sponge roller, and the bag package P with a good finish and appearance can be obtained by setting the side without the seal portion of the bag package P as the front side. .
[0023]
The gusset packaging machine according to the present invention can be applied not only to a normal pillow packaging machine having the same horizontal type but also to a vertical type bag making and filling machine. The product A, for example, castella, Japanese confectionery, rice ball, or the like that can be stood vertically and displayed at the store when packaged in a bag package, is not limited to this. It is. Further, the end seal on the bag mouth side does not necessarily require the heat seal on the bag mouth side when another closing means instead of heat seal such as twisting or wire bundling is used. Further, in the reverse pillow packaging machine 1, the gas blown in depends on the type of the product A, but in the case of food, it can be an inert gas such as sterile air or nitrogen gas, and the product A itself is already packaged. If it is, clean air may be used.
[0024]
【The invention's effect】
The gusset wrapping machine according to the present invention has an end sealer that performs end sealing on a cylindrical packaging material that surrounds a product, and a cylindrical packaging material that operates in synchronization with the operation of the end sealer and is subjected to end sealing from the side. A gusset claw for inserting a gusset is provided, the tubular packaging material is inflated from the inside by the gas fed by the air feeding means, and the bulging shape of the tubular packaging material is shaped by the shaping member. Therefore, according to this gusset packaging machine, when end packaging is applied to the cylindrical packaging material that wraps the product and bag packaging is performed, the gusset folding from the side with respect to the cylindrical packaging material can be appropriately performed with a simple structure. It can be performed and any bag package can be inflated equally to stabilize the finish. In addition, the shaping member is formed in a tunnel shape disposed on the transport conveyor between the center sealer and the end sealer, and the form in which the bulging shape of the cylindrical packaging material passing through the inside of the tunnel follows the inner shape In addition, a guide slit through which the center seal part can pass is formed on the upper part of the shaping member , and the guide slit plays a role of tilting the passing center seal part toward the shaped cylindrical packaging material side. With a small number of parts, shaping of the bulge of the cylindrical packaging material and tilting of the center seal part can be realized.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a reverse pillow packaging machine to which a gusset packaging machine according to the present invention is applied.
2 is a perspective view showing a main part including shaping means of the gusset packaging machine shown in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reverse pillow packaging machine 2 Carry-in conveyor 3 Former 4 Paper feeding means 5 Roller 6 Center sealer 7 Heat seal roller 8 End sealer 9 Cutter 10 Belt conveyor 11 End of belt conveyor 10 Belt conveyor 13 End 14 of belt conveyor 12 Upper side end sealers 15 lower end sealers 21 air nozzle 22 air supply source 23 flexible feed tube 24 pressing member 30 blowing means 31 gas 32 shaping member 33 top plate portion 34 side plate portion 35 the guide slit 40 Gazette pawl 41 first Gazette Nail 42 Second gusset nail A Product Fw Web-like packaging material Ft Cylindrical packaging material Fa Both side edges of packaging material Fb margin part Fc Center seal part L Label P Bag packaging

Claims (4)

Supply conveyor for supplying products in the horizontal direction, former for forming the web-shaped packaging material into a cylindrical packaging material with both side edges facing upward, and the cylindrical packaging material in the same horizontal direction as the supply direction of the product paper feeding means for feeding said tubular said packaging material sheet both side edges butt-seamed - center to form a center seal portion by Le sealer, conveying the products enclose the tubular packaging material in a mounted state conveyor, actuation of the tubular packaging material in the end sealers performs the end seal, and said end sealer are arranged in connection with said end sealer surrounding the product is disposed on the downstream side of the center sealer to A gusset claw that folds the gusset from the side with respect to the tubular packaging material that operates in synchronization with the end seal,
An air supply means for sending gas into the cylindrical packaging material to inflate the cylindrical packaging material from the inside, and a tunnel formed on the transport conveyor between the center sealer and the end sealer. and which further comprises a shaping member for shaping in a manner that along the bulge shape of the tubular packaging material to pass through the inner portion to the inner shape, the center seal portion passable guide slit in the upper part of the shaping member A gusset wrapping machine which is formed and the guide slit passes through the center seal portion passing therethrough to the shaped cylindrical wrapping material side.   The gusset claw includes a first gusset claw for inserting a gusset into the tubular packaging material on the upstream side of the end sealer, and the tubular packaging material formed on the bag on the downstream side of the end sealer. The gusset packaging machine according to claim 1, comprising a second gusset claw for inserting a gusset from the side. Pair the shaped member, in which the top plate portion, which is constituted separately is positioned adjusted according to the size of the top plate portion being disposed on opposite sides of the top plate portion integrally or said tubular packaging material gusset machine according to claim 1 or 2 consists of being formed in a plate structure consisting of the side plate portion.   The guide slit is formed as an upright gap that can receive the palm-shaped center seal portion that is in an upright state on the upstream side, and is formed as an inclined gap that gradually inclines toward either end as the end sealer is approached. The gusset packaging machine according to any one of claims 1 to 3.

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