JP4303850B2 - Film mounting apparatus and film mounting method for cushioning material-less packaging - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film loading device and a film adhesion method for bonding the shrink film on the inner surface a predetermined position of the packaging box for a loose衝材unnecessary packaging body.
[0002]
[Prior art]
In order to prevent damage to the packaged items during operations such as sorting, transport, and storage after packaging, the plastic foam molded body represented by polystyrene is lightweight and inexpensive as a cushioning material to be filled in the packaging container. Because it has excellent buffering properties, it is used in large quantities. However, it is no longer needed after the article is taken out, but it is disposed of, but from the viewpoint of protecting the global environment by utilizing recyclable resources, it can be innocuously incinerated and replaced with other biodegradable materials such as pulp molded products. Is recommended.
However, the filling of the buffer material is complicated and time-consuming, is bulky, and wastes in the volume ratio. For this reason, Japanese Patent Application Laid-Open No. 11-70600 proposes a so-called cushioning material-less packaging method that does not use a cushioning material. In this method, the size of the cardboard box is detected while sequentially transferring the cardboard boxes of different dimensions on the horizontal conveyor, and the position of the adhesive spray gun, the descending stroke, etc. are set and set accordingly. An adhesive is applied from the spray gun moved to the position to the inner bottom surface of the cardboard box, and a shrink film of a certain length is dropped into the cardboard box and bonded. Next, the package or package group is stored on the non-adhesive surface side of the film, the film is lightly covered and sent to the shrink tunnel, and the package is integrally restrained in the cardboard box by heat shrinkage of the film. It is a less packaging body.
[0003]
[Problems to be solved by the invention]
According to the manufacturing method of the cushioning material-less package, an adhesive is applied to a predetermined position on the inner bottom surface according to the size of the cardboard box transferred by the horizontal conveyor, and then a certain length of shrink film is dropped and pushed into the cardboard box. Since the film can be attached in a corrugated cardboard box of various sizes, the entire apparatus becomes large, and the operation becomes complicated and expensive. In addition, since the shrink film is attached to the entire inner surface of the cardboard box, even if the film is thermally shrunk, the packaged product is not sufficiently restrained, and therefore, the cushioning property is inferior.
The present invention provides a buffer-less package in which a packaged product is sufficiently restrained by heat shrinkage of the film, and also affects the ability to mount a film on a corrugated box of various sizes by a relatively small device. An object of the present invention is to provide an apparatus and method capable of efficiently mounting a film.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention inserts a shrink film coated with an adhesive in a number of pinpoints, dotted lines, or spirals from the opening of the packaging box in a state where the top plate is opened, and the bottom of the packaging box. And / or a cushioning material that is bonded to a part of the inner surface of the side wall and contains a packaged product stored on the non-adhesive surface side of the film adhered in the box, and is integrally restrained in the packaging box by heat shrinkage of the film. The present invention relates to a film mounting apparatus and method for a package .
[0005]
That is, claim 1 is a roll-shaped shrink film supported so as to be able to be unwound; and a packaging box in an opened state of a top plate flap is pulled out from the roll-shaped shrink film in a state inclined in a vertical plane perpendicular to the traveling direction. A supply conveyor that transports the film to a position where the film is mounted and then sends it out of the apparatus; the film is provided at the position where the film is mounted, and covers the opening of the packaging box with a film corresponding to the substantially cross-sectional length of the inclined packaging box A film pulling mechanism for pulling out the film; and an adhesive for applying the adhesive in a pinpoint or dotted line or spiral manner to the position on the inner surface of the packaging box and / or the inner surface of the side wall on the back surface of the shrink film being pulled out Application means; the middle part of the drawn film is pushed into the packaging box with a push plate, and the adhesive application part on the back side of the film And pushing means for adhering to the inner bottom surface and / or inner surface of the side wall of the packing box; and a film cutter for cutting the lead upstream end of the mounted within package box film, a film loading device comprising a.
[0006]
Claim 2 transfers the packaging box in a state in which the top plate flap is opened into the shrink film mounting machine in a state inclined to a vertical plane orthogonal to the traveling direction; after the packaging box is positioned and stopped at the film mounting position, it is in an inclined state. substantially while section the film corresponding to the length drawn out of shrink film so as to cover the packing box opening portion, an adhesive is applied to a number of pinpoint or linear or spiral shape on its back face of the packaging box; drawer The adhesive applied part on the back side of the film is adhered to a part of the inner bottom surface and / or side wall inner surface of the packaging box by pushing the intermediate part of the film into the packaging box with a push plate; Cut the upstream end of the film, carry it out of the film loading machine, insert the package or package group on the non-adhesive surface of the bonded film, and wrap it lightly. Feeding the over preparative shrink unit, etc., a buffer material-less packing-body film bonding method characterized by constraining together the packaging box in a packaged article by heat shrinking the film.
[0007]
As described above, the packaged product or packaged product group is stored on the non-adhesive surface of the film adhered to the bottom surface of the packaging box and / or the inner surface of the side wall when the top plate flap is opened, and the upper and side surfaces of the non-packaged product group After the film ends are overlapped, the film is sent to a heat shrink unit, etc., and the film is thermally shrunk to constrain the packaged product or group of products in the packaging box, and then the top plate flap is sealed to provide a cushioning material. It is a less packaging body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a cross-sectional view of the packaging form (packing body 19) of the present invention, and FIG. 2 is a perspective view showing a state in which a film as a packaging material is pushed into a packaging box.
As shown in FIG. 1, the packing body 19 of the present invention has a shrink film 22 in which the adhesive 17 is applied in a number of pinpoints, dotted lines, or spirals (swirls) at a predetermined position on the back surface, and the top flap is opened. It pushes from the opening part 16 of the packaging box 10, and adheres to a part of the inner bottom surface 12 and / or the side wall inner surface 14 of the packaging box (FIG. 2). The packaged product or packaged product group 18 is accommodated on the non-adhesive surface side of the film 22 adhered in the packaging box, and the film ends are overlapped to the upper and side surfaces of the packaged product or packaged product group, and then the film The heat shrinkage of 22 is integrally restrained in the packaging box 10. Next, the top plate flaps 15 and 15 are abutted against each other and gummed or stapled. In the figure, 11 is a bottom plate of the packaging box, and 13 is a side plate.
Although a cardboard box, a carton box, etc. can be used as the packaging box 10, the example which uses a cardboard box is shown below.
Cardboard box Model: A type M size: 319W x 471L x 385H (body height h225) mm
S size: 320W x 350L x 290H (body height h130) mm
Packaging material Material: PE film (flat roll)
Dimensions: inner diameter 76mm, outer diameter 240mm, width 500-400mm
[0009]
FIG. 3 is a side view of the film loading machine, and FIG. 4 is a plan view showing the unwinding portion 27, the tension roll 28, the film guide roll 29, the film drawing mechanism 35, and the pushing means 40 of FIG. is there.
The film loading machine 20 includes a roll-shaped shrink film 22a supported so as to be unwound, a film unwinding section 27, a supply conveyor 23 for feeding the packaging box 10 in a state where the top plate flap is opened, and an upper surface of the opening of the packaging box. A film drawing mechanism 35 for spreading the film toward the surface, means 30 for applying the adhesive 17 to the back surface of the film being drawn, and a pushing means 40 for pushing the film coated with the adhesive into the packaging box for bonding. The film cutters 33 and 34 for cutting the upstream end of the film loaded in the packaging box are mainly configured. In FIGS. 3 and 4, reference numeral 48 denotes an operation panel.
[0010]
In this mounting machine, the film is drawn out in a twin manner from the roll-shaped shrink film 22a set on the upper-type unwinding free rollers 25, 25. As shown in FIG. 3, the film unwound by the film unwinding unit 27 passes through a tension roll 28 and a film guide roll 29, and is opened on a top-opened packaging box (corrugated cardboard box) 10 on the supply conveyor 23. It is pulled out so as to cover the upper surface of the part 16.
The supply conveyor 23 is installed obliquely (for example, 30 ° inclined) in a vertical plane perpendicular to the traveling path, and a guide conveyor 24 having a traveling plane perpendicular to the supply conveyor 23 is provided, and the diagonal corners of the cardboard boxes are positioned by both conveyors. At the same time, the overall width of the unit is reduced by running diagonally. A loading positioning stopper 26 and a height position adjusting plate 46 are provided between the rollers at predetermined positions of the supply conveyor 23. The supply conveyor 23 and the guide conveyor 24 in the illustrated example are provided with a counter shaft extending in a direction perpendicular to the rollers below a large number of rollers, and a round belt is provided between each roller and the counter shaft. Although a belt driven roller conveyor is shown, other types of conveyors may be substituted.
[0011]
As shown in FIG. 4, the film drawing mechanism 35 draws out the film 22 corresponding to a predetermined length that covers the opening 16 of the inclined packaging box 10 (substantially the cross-sectional length of the top-opened box). And includes a timing belt 36, a driving device 37, a fixed nipper 38 fixed to the frame 21, and a movable nipper 39 fixed to the timing belt 36. The fixed nipper and the movable nipper are turned on and off by an air drive type, an electromagnetic drive type or a vacuum suction type, but may be a nip type in which the belt surface has a function of adhering to the film.
The adhesive application means 30 applies the hot melt adhesive 17 in a pinpoint, dotted line, or spiral shape to a position that becomes an adhesive portion to the inner bottom surface and / or side wall inner surface of the packaging box on the back surface of the shrink film being pulled out. It consists of a hose 31 from a hot melt applicator and a nozzle head (spray gun) 32 that applies an adhesive toward the back of the film guided by the film guide roll 29. The adhesive is applied in a predetermined pattern such as a pinpoint or dotted line based on an injection command to a predetermined position by count management of an encoder (not shown) attached to the timing belt drive unit 37. In addition, although the example of illustration used the hot-melt-adhesive, you may replace with another adhesive.
[0012]
The film pushing means 40 pushes the surface side intermediate portion of the film 22 drawn out covering the opening 16 of the cardboard box with the push plate 42, thereby bringing the adhesive application portion 17 on the back side of the film into the inner bottom surface of the cardboard box and It adheres to the inner surface of the side wall. This pushing means essentially comprises a pushing air cylinder 41 installed at the same inclination angle as the box and a pushing plate 42 provided on the piston rod of the air cylinder 41. 3, two side wall pushing plates 43 facing the side plate of the box, a side pushing link (toggle link) 44 and a side pushing cylinder 45 are provided as shown in FIG. The push plate 42 pushes the film 22 toward the bottom surface 12 in the box, and is therefore a square plate smaller than the bottom surface in the box. Further, an air pad is attached to the push plate 42 and the side wall push plate 43 to bond and push the film. Can be made even better.
A height adjusting plate 46 is provided between the rollers of the guide conveyor 24 so as to face the push plate 42, and the height of the cardboard box at the film mounting position is adjusted by the adjusting cylinder 47. Further, a film cutter 33 and a receiving blade 34 are provided on a frame near the fixed nipper 38 in order to cut the upstream end of the film 22 mounted in the packaging box.
The capacity of this film mounting unit is 10-12 boxes or more with a two-head system.
[0013]
Next, a mounting method will be described.
The corrugated cardboard box 10 in a state where the top plate flap is opened, which is sent from a box making machine (not shown), is placed on the supply conveyor 23 in a state where the corrugated cardboard box 10 is inclined two by two at intervals, and is transferred into the film mounting machine 20.
Although the cardboard box 10 can be tilted manually, it is more efficient to automatically tilt the cardboard box 10 by a tilt mechanism 50 as shown in FIG. 5 upstream of the film mounting machine. This tilting mechanism 50 is provided with a tilting pusher 52 on the upper frame of the frame 51, suspends the arm 53 so as to be movable in the lateral direction, and arranges the carry-in conveyor 54 directly below the pusher 52, and at the left center of the frame 51. A supply conveyor 55 inclined by 30 ° with respect to the horizontal plane is provided. The supply conveyor 55 corresponds to an upstream conveyor of the supply conveyor 55 in the film loading machine, but both conveyors may be integrated. Note that guides 56 and 57 are provided at one end of the carry-in conveyor 54 and the supply conveyor 55.
[0014]
The cardboard box carried in by the supply conveyor is stopped at the film mounting position. On the other hand, the film 22 is drawn out from the roll-shaped shrink film 22a set on the upper-type unwinding free rollers 25, 25 by a twin method.
While being pulled out so as to cover the film 22 of a predetermined length on the upper surface of the opening portion of the corrugated cardboard box 10 in the inclined state stopped at the film mounting position, the back surface serves as an adhesive portion to the inner bottom surface of the packaging box and / or the inner surface of the side wall. Two rows of hot-melt adhesives 17 are applied to the positions in a pinpoint, dotted line, or spiral shape (see FIG. 2). As described above, the adhesive application is performed by driving the injection gun 32 based on the injection command to a predetermined position by the count management of the encoder (not shown) attached to the timing belt drive unit 37, such as pinpoint, dotted line, etc. Inject into the pattern.
[0015]
FIG. 6 is an enlarged side view showing a state in which the movable nipper 39 of the film drawing mechanism in FIG. 3 is at the origin position, and the movable nipper 39 holds the film tip slightly protruding from the fixed nipper 38. FIG. 7 shows a state where the fixed nipper 38 is turned off and the movable nipper 39 holding the film end is moved to pull out the film 22 by a predetermined length, and then the pushing cylinder 41 is driven to bring the pushing plate 42 into the cardboard box 10. It is an expanded sectional view which shows the state which pushed in and bonded the film 22 in the cardboard box. FIG. 8 is an enlarged side view of the state in which the push plate 42 is raised to the standby position after completion of film mounting. 6-8, the code | symbol 49 is a guide roller which gives tension to the film at the time of pushing.
[0016]
As described above, hot melt adhesive is sprayed onto a predetermined location on the back of the film in the middle of drawing, the film is pushed into the cardboard box, and the film is bonded to the inner bottom and / or part of the inner wall of the side wall, then fixed. The nipper 38 is turned on for cutting, the conveyor stopper 26 is released, and the packaging box is carried out of the film loading machine. Next, the packaged product or packaged product group 18 is accommodated on the non-adhesive surface of the bonded film, overlapped to the side, wrapped lightly, sent to the heat shrink unit 60, and the film is thermally shrunk to wrap the packaged product. Restrain in one box. After doing in this way, the top plate flap is abutted and sealed to form the cushioning material-less package 19.
[0017]
The film can be thermally shrunk manually by blowing hot air individually, but if a shrink tunnel is used, it can be efficiently blocked in a short time. FIG. 9 is a side view showing an example of the heat shrink unit. The heat shrink unit 60 includes a heat-resistant belt conveyor 62 that travels along the longitudinal direction of the base 61, and a shrink tunnel portion 65 is provided on the upper portion thereof. A large number of heaters 66 and a fan motor 66 are attached to the center of the heater group on the upper plate of the shrink tunnel portion 65, and a belt drive unit 63 is disposed on one side of the base 61 and an operation panel 64 is disposed on the lower center portion.
[0018]
FIG. 10 is a cross-sectional view of the packaging box shown in FIG.
FIG. 11 is a cross-sectional view of a state in which the film end portions are overlapped and the film is covered over the entire non-wrapped product. FIG. 12 shows another embodiment of the film fixed in the packaging box. (A) is a method in which the film is adhered and thermally contracted at several positions on the inner bottom surface and the side wall on the closer side. (B) is a cross-sectional view of a state where the film is adhered and thermally contracted at several locations on the inner bottom surface, and (c) is a cross-sectional view of a state where the film is adhered and thermally contracted at several locations on the opposite side wall. is there.
[0019]
The film mounting form of the present invention is a film in which the film is adhered to the inner bottom surface / side wall inner surface of the packaging box in a surface or dotted manner (for example, bottom surface: imposition, side surface: spotting). Since both sides / one side) or side surfaces can be bonded, the film will not be misaligned when stored according to the shape / weight, storage quantity, storage method, etc. easy. In addition, when the contents are different, for example, when the quantity is small and light, after removing the part of the side wall adhesion part or the selected backrest part, the stored contents are stabilized, and then the film end and side are removed. Overlap and shrink. On the other hand, when the stored items are heavy, large or large in quantity, the film end portions are overlapped while leaving the side wall adhesive portions.
[0020]
The above embodiment has the following advantages.
1) A hot melt adhesive is applied to the back surface of the film (film reversal surface) when the film is pulled out, instead of hot melting in the packaging box. As a result, the machine becomes compact with space saving for hot melt. An oil pan can be installed to prevent hot melt from dripping.
2) The film pulling is started depending on the presence or absence of the upstream box (one or two) and is pushed into the box. Thus, the “packaging box” is immediately bonded without being left in the hot melt spray application state.
3) Since the packaging box is transported in an inclined state in a plane perpendicular to the traveling direction and the film is adhered to the packaging box by pushing the push plate from the oblique upper side, the positioning of the box relative to the size of the box and the film length Adjustment is simple, and the machine is also compact and easy to maintain.
4) It has a high-quality buffering function even if the product storage rate in the packaging box is somewhat low. In other words, a belt-like polyethylene film is joined to the bottom surface of the box (after storing the product in it, and the ends of the film are covered), and heat is applied to fix the product so as to be wrapped from below. ing. Therefore, compared with the conventional packing method using cushioning material, the work such as (1) packing of cushioning material, (2) taking it out, (3) disposal of waste material after opening, etc. becomes unnecessary. Material costs can be reduced.
[0021]
The present invention is to prevent damage to shipments at wholesale centers for cosmetics, pharmaceuticals, daily necessities, stationery, apparel, etc., distribution centers in mail order businesses, and distribution centers for printed materials such as corporate catalogs, pamphlets, computer books, etc. In addition, instead of using a cushioning material such as polystyrene, it can be dealt with by blocking the film, and it can be used for packing at the time of distribution in order to prevent damage of small-sized merchandise and pella booklets.
Compared to conventional film loading machines, it also has higher quality cushioning performance (shape of stored products, variety of weight, change in size of storage), low cost and excellent aesthetics. Furthermore, the stored product can be moved in the cardboard box without being affected by the number of products (packaged products) stored, the storage method (the products are placed vertically or distributed, etc.), shape, and weight. No film damage is generated without damage.
[0022]
【The invention's effect】
As described above, the cushioning material-less packaging body of the present invention adheres a film coated with an adhesive to a predetermined position on the back surface to the bottom surface / side wall inner surface of the packaging box, and attaches the packaged product to the adherend surface of the film in the packaging box. After storage, the product (packaged product) is constrained as a whole by the film blocking phenomenon caused by heating, so it is not affected by the number, storage method, shape and weight of the product. Good cushioning effect can be obtained by firmly fixing the product without using any cushioning material.
In addition, the film mounting machine and mounting method include a part for supplying a cardboard box to a predetermined position in a predetermined time, a part for setting a roll-shaped film, a part for drawing a film, a device for applying an adhesive, and a part for cutting a film. Since it is composed of a part that presses the film against the inner bottom and side walls of the cardboard box, the machine has a wide range of applications for the size of the cardboard box, low cost, excellent aesthetics, high performance and compactness. Also, it can cope with a thin film (0.04 mm or less). In particular, the packaging box is transported in an inclined state in a plane perpendicular to the running direction, and the film is bonded to the packaging box by pressing the push plate from the diagonally upper side surface. Adjustment is easy, and the machine is compact and easy to maintain.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a packaging form (packaging body) of the present invention.
FIG. 2 is a perspective view showing a state in which a film is pushed into a packaging box.
FIG. 3 is a side view of the film loading machine.
FIG. 4 is a plan view of a film loading machine.
FIG. 5 is a side view of the packaging box tilting mechanism.
6 is an enlarged side view showing a state where the movable nipper in FIG. 3 is at the origin position.
FIG. 7 is an enlarged cross-sectional view showing a state where the film is pulled out by a predetermined length and then the push plate is pushed into the packaging box to adhere the film.
FIG. 8 is an enlarged side view showing a state in which the push plate is raised to the standby position after the film is installed.
FIG. 9 is a side view showing an example of a heat shrink unit.
10 is a cross-sectional view of a state in which a packaged product is filled in the packaging box of FIG.
FIG. 11 is a cross-sectional view showing a state in which the film end portion is overlapped and the film is covered on the entire packaged product.
FIG. 12 shows another embodiment of the film fixed in the packaging box. FIG. 12A is a diagram in which the film is adhered and thermally shrunk at several positions on the inner bottom surface and on the side wall. (B) is a cross-sectional view of a state where the film is adhered and thermally contracted at several locations on the inner bottom surface, and (c) is a cross-sectional view of a state where the film is adhered and thermally contracted at several locations on the opposite side wall. is there.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Packaging box (cardboard box) 11 Bottom plate 12 of packaging box Inner bottom surface of bottom plate 13 Side plate 14 of packaging box Side wall inner surface of packaging box 15 Top plate flap 16 of packaging box 17 Adhesive 18 Packaged goods 19 Packing body 20 Film Mounting unit 21 Frame 22 Film 22a Film roll 23 Supply conveyor (round belt driven roller conveyor)
24 Guide Conveyor 26 Loading Positioning Stopper 27 Unwinding Section 28 Tension Roll 29 Film Guide Roll 30 Adhesive Application Means (Hot Melt Applicator) 31 Hose 32 Nozzle Head (Injection Gun) 33 Cutter 34 Receiving Blade 35 Film Drawer Mechanism 36 Timing Belt 37 Timing belt drive device 38, 39 Nipper 40 Pushing means 41 Push cylinder 42 Push plate (with air pad) 43 Side wall push plate 44 Side push link (toggle link) 45 Side push cylinder 46 Height adjustment plate 47 Height adjustment Cylinder 48 Operation panel 50 Tilt mechanism 51 Tilt mechanism frame 52 Tilt pusher 53 Arm 54 Loading conveyor 55 Supply conveyor 56, 57 Guide 60 Heat shrink unit 61 Base 62 Heat resistance Belt conveyor 63 Belt drive section 64 Control panel 65 Shrink tunnel section 66 Heater 67 Fan motor

Claims (2)

A roll-shaped shrink film supported to be unwound,
A supply conveyor that feeds the packaging box in an opened state of the top plate flap to the mounting position of the film drawn from the roll-shaped shrink film in a state inclined in a vertical plane orthogonal to the traveling direction,
A film drawing mechanism that is provided at the mounting position of the film and draws out a film corresponding to a substantially cross-sectional length of the inclined packaging box so as to cover the opening portion of the packaging box;
An adhesive application means for applying an adhesive in a pinpoint or dotted line shape or spiral shape to a position to be an adhesive portion to the inner bottom surface and / or side wall inner surface of the packaging box on the back surface of the shrink film being pulled out;
A pressing means for bonding the adhesive-applied portion on the back surface of the film to the inner bottom surface and / or the side wall inner surface of the packaging box by pressing the intermediate portion of the drawn film into the packaging box with a pressing plate;
A film cutter for cutting the drawer upstream end of the film mounted in the packaging box;
A film mounting apparatus for a packing material-less packaging body comprising The packaging box with the top plate flap opened is transferred into the shrink film mounting machine in a state inclined to a vertical plane perpendicular to the traveling direction,
After stopping the positioning of the packaging box at the film mounting position, pull out the shrink film so as to cover the opening of the packaging box with the film equivalent to the cross-section length of the inclined packaging box. Or apply the adhesive in a linear or spiral shape,
By pressing the middle part of the drawn film into the packaging box with a push plate, the adhesive application part on the back side of the film is adhered to a part of the inner bottom surface and / or side wall inner surface of the packaging box,
Cut the upstream end of the film loaded in the packaging box, carry it out of the film loading machine, load the package or group of packages on the non-adhesive surface of the bonded film, and wrap it lightly The method for adhering a film for a cushioning material-less package, wherein the film is thermally shrunk and the film is thermally shrunk to constrain the article to be packaged in the packaging box.

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