JPH0729643B2 - Liquid packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention fills a box-shaped container having an open upper end with a content made of a sheet material whose base material is paper, plastic, etc. The present invention relates to a liquid packaging device for manufacturing a box-shaped liquid package by closing and forming the whole into a rectangular box shape.

[Conventional technology]

Conventionally, for packaging liquid foods such as milk and juice,
A box-shaped container made of a sheet material based on paper, plastic, etc. is used. As a liquid packaging device using this box-shaped container, a band-shaped sheet material having a heat-adhesive resin coating on both sides is used as a raw roll. The strip-shaped sheet material is unfolded, folded in two in the longitudinal direction, and sealed in the lateral direction with an appropriate gap in the longitudinal direction. Then, the strip-shaped sheet material is cut in the lateral direction and cut off to open one end. A device is known in which a bag-shaped container is formed, the bag-shaped container is formed into a box-like shape, and then the container is held by a carrier and intermittently conveyed to fill and seal the contents in the container. (See JP-A-60-204424 and JP-A-61-81905).

In the above apparatus, the box-shaped container is finally assembled into a package having the shape shown in Fig. 4E. The triangular flap 18B at the lower end of the drawing is adhered to the side surface of the container, and the triangular flap 18C at the upper end is the container. It is glued to the top surface. The box-shaped package used as a product usually has the bottom of the container at the top of the drawing. This box-shaped container is used for filling the contents, sealing the upper opening, and molding. It is being appreciated.

[Problems to be solved by the invention]

By the way, as a carrier for holding and transporting the box-shaped container with the upper end opening, a box-shaped container that surrounds four side surfaces of the box-shaped container is usually used, and at the time of filling the container, forming the container opening, and sealing. The side surface of the container is restrained from bulging outward by restraining the side surface of the container during molding of the upper surface of the container. However, even if the outer surface of the box-shaped container is constrained by a box-shaped carrier, the final manufactured box-shaped package tends to have a shape in which the side surface and the upper surface bulge outwards a little, and the appearance deteriorates. There was an occasion.

Further, when the box-shaped carrier as described above is used, there is a problem that the mechanism for inserting the box-shaped container into the box-shaped carrier or the mechanism for discharging the sealed box-shaped package from the box-shaped carrier becomes complicated. In order to solve this problem, the present inventor has developed a liquid packaging device using a U-shaped carrier instead of a box-shaped carrier. In this device, both sides of the carrier are open, and therefore this part The side surface of the container was likely to bulge outward, and the appearance of the final box-shaped package tended to deteriorate.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid packaging device capable of manufacturing a favorable rectangular box-shaped package while using a U-shaped carrier.

[Means for solving problems]

The present invention, which has been made to achieve the above object, holds a box-shaped container having an open upper end in an upright state by a U-shaped carrier, and intermittently runs the carrier along a predetermined traveling path, on the way. Then, the container held in the carrier is filled with the contents, the upper end of the opening is sealed, the upper end of the container is flatly shaped, and the triangular flaps formed on both sides of the upper end of the container are joined to the outer surface of the container at the time of molding to form a box-shaped liquid In a liquid packaging apparatus for producing a filled package, an upper surface press for pressing the upper surface of the liquid filled package and a U-shaped carrier at two carrier stop positions downstream of the position where the triangular flap is joined to the outer surface of the container. A molding device having a side press that sandwiches and presses both side surfaces of the package located at the open sides is provided.
The upper surface press has an elevating plate provided so as to move up and down, and two downwardly convex pressing members attached to the lower surface corresponding to the two carrier stop positions. The side press includes a moving plate provided so as to move in the lateral direction and two pressing members attached to the moving plate in correspondence with the two carrier stop positions. Use as a summary.

[Action]

In the liquid packaging device having the above configuration, the U-shaped carrier holds the box-shaped container, the U-shaped carrier intermittently conveys the box-shaped container, and the box-shaped container is filled with contents on the way, After sealing the upper end of the opening to seal the container and molding the upper end of the container into a flat shape, the triangular flap formed at that time was pressed against the outer surface of the container and joined to form a rectangular box-shaped package,
Further, the upper surface of the packaging body held by the U-shaped carrier is pressed by the upper surface press of the molding device, and at the same time, the side surfaces of the packaging body exposed at the open portions on both sides of the U-shaped carrier are pressed by the side surface press. As a result, the upper surface of the package is pressed by the upper surface,
The bottom surface is the bottom surface of the carrier, both side surfaces are side presses, and the front and back side surfaces in the carrier movement direction are constrained by U-shaped carriers.
Then, the six sides of the rectangular package are pressed, the ridge lines of the package are bent at right angles, and the side surfaces and the upper and lower surfaces are flat or slightly inwardly recessed. Moreover, since the upper surface press and the side surface press each include two pressing members for pressing the packages at the two carrier stop positions, each package is pressed twice and molded. Thus, a box-shaped container having a good appearance is manufactured.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. Third
FIG. 1 is a perspective view schematically showing a liquid packaging device according to an embodiment of the present invention. In the figure, 1 is a strip-shaped sheet material having paper as a base material and thermoplastic resin coating on both sides, 2 is a raw roll formed by winding the strip-shaped sheet material, 3 is a guide roller, 4 is a straw punching device, 5 Is a pull-tape tape applying device, 6 is a pull-tab tape take-up device, 7 is a date printing device, 8 is a ruled line pressing device, 9 is a first constant feed drive roller that intermittently conveys a predetermined amount of strip-shaped sheet material, and 10 is tension. Adjusting dancer roller,
11 is a germicidal lamp, 12 is a sheet folding device for folding the strip-shaped sheet material in two, 13 is a sealing device for laterally sealing the folded strip-shaped sheet material 1 to form a seal portion 14, and 15 is a direction change A roller, 16 is a second constant-size feed drive roller for intermittently conveying a predetermined amount of strip-shaped sheet material, 1
Reference numeral 7 is a cutting device for cutting the end of the belt-shaped sheet material into a bag-shaped container 18.

Reference numeral 20 denotes a molding device for expanding the bag-shaped container 18 and molding it into a box-shaped container, and a rotary table 22 radially provided with a mandrel 21 that holds the bag-shaped container 18 and can be opened and closed. When,
Forming means (not shown) and the like arranged around it are provided. 24 is a U-shaped carrier 25 for holding the box-shaped container 18
Is a container transporting device in which the wall surfaces are connected endlessly so as to be front and back, and is configured to be driven intermittently in the direction of the arrow. S1 to S12 indicate stations for performing a predetermined process on the container held in the carrier 25 of the container transporting device 24, and each station is provided with a means for performing a predetermined process. Illustration is omitted. The details of the processing will be described later. 26
Is the discharge conveyor.

Next, the operation of the entire liquid packaging device will be described. In FIG. 3, the strip-shaped sheet material 1 is fed from the original roll 2, and is intermittently fed by the fixed feed roller 9 at a fixed size. On the way, various processes are applied while the strip-shaped sheet material 1 is stopped. That is, first, a straw hole is formed in the band-shaped sheet material 1 from the inner surface side of the band-shaped sheet material 1 by the straw hole punching device 4, and the pull tab tape applying device 5 applies the pull tab tape to the outer surface of the straw hole. Thereafter, the date is printed by the date printing device 7 on the strip-shaped sheet material 1 to which the pull tab tape is attached, and the ruled lines are formed by the ruled line pushing device 8. These ruled lines form folds when molding into a box-shaped container.

The strip-shaped sheet material 1 that has passed the first drive roller 9 is intermittently fed by the second drive roller 16 at a constant size. At this time, theoretically, the constant feed by the first drive roller 9 and the constant feed by the second drive roller 16 are theoretically performed at the same timing, but in reality, they are slightly different due to the elongation of the belt-shaped sheet material. However, because the dancer roller 10 is interposed between the two, the vertical movement of the dancer roller 10 absorbs the error in intermittent feed by both drive rollers. Dancer laura
The strip-shaped sheet material 1 that has passed 10 is first sterilized on the inner surface side by the sterilization lamp 11, and then the sheet folding device.
It is folded in two by 12 and laterally sealed by the sealing device 13 at a predetermined interval, is horizontally changed by the direction changing roller 15, and is cut by cutting the center of the seal portion 14 by the cutting device 17. As a result, as shown in FIG. 4A, the bag-shaped container 18 having the seal portions 18A at both ends and having the straw hole 28 and the pull tab tape 29 attached thereon is formed.

Next, the bag-shaped container 18 is put on the mandrel 21 of the forming device 20, expanded while rotating with the mandrel 21, the end opposite to the opening is formed flat, and then the body is rectangular. The box-shaped container 18 is formed into a shape and has triangular flaps 18B formed on both side surfaces of the lower end as shown in FIG. 4B. In this process, the lower triangular flap 18B is not adhered to the side surface of the container. The molded box-shaped container 18 is transferred from the mandrel 21 to the carrier 25 located at the station S1. At this time, the side surface of the box-shaped container 18 having the triangular flap 18B is U
The character-shaped carrier 25 is inserted into the carrier 25 so as to be located at both open portions.

While the box-shaped container 18 held by the carrier 25 is held by the carrier 25 and intermittently travels, it is pushed into a predetermined position with respect to the carrier 25 in the station S2, filled with the contents in the station S3, and topped in the station S4. Molded into a shape for closing the opening (see Figure 4C), ie folded at each fold, degassed at stations S5 and S6 and the upper opening sealed, as shown in Figure 4D. Then, it becomes a shape having triangular flaps 18B and 18C extending laterally from the upper and lower sides of both sides, and then the station S
At S7, the upper end is formed flat and the upper and lower triangular flaps are bent upward, and at station S9, the resin on the inner surface of the triangular flap and the outer surface of the container to be joined is heated and melted, and at station S10, each triangular flap is container. The outer surface is pressed and adhered to form a container or box-shaped package 18 having the shape shown in FIG. 4E. However, in this case, the side surface of the package 18 bulges or each corner is restored to an angle larger than a right angle, so that the appearance is slightly deteriorated. The station S11 is for forming the packaging body 18 into a neat rectangular shape, and the upper surface and both side surfaces of the packaging body 18 are pressed at this station to form the whole into a rectangular shape. The molding device provided in this station S11 will be described later.

The packaging formed at station S11 is
The package that is discharged onto the discharge conveyor 26 at 12 and is placed on the discharge conveyor 26 is sent to the subsequent process, and is packaged and commercialized.

The details of the molding device provided in the station S11 in the liquid packaging device will be described below.

FIG. 1 is a sectional view of the molding device 30 provided in the station S11 as seen in the traveling direction of the carrier 25, and FIG. 2 is the molding device 30 thereof.
FIG. In the figure, the molding device 30 is an upper surface press for pressing the upper surface of the container or the package 18 after filling and sealing.
31 and a side surface press 32 for pressing the side surface of the package. Top press 31 is a bearing 34 held by bracket 33
And a guide rod 35 held by the bearing 34 so as to be slidable up and down, a lift plate 36 held at the lower end thereof, and a lift plate 36.
2 has two downwardly convex pressing members 37 attached to the lower surface thereof and an air cylinder 38 for vertically moving the elevating plate 36. Each side press 32 includes a bearing 41 held by a bracket 40, a guide rod 42 laterally slidably held by the bearing 41, and a moving plate 43 held by the tip of the guide rod 42. Two press members 44 attached to the moving plate 43, and an air cylinder for horizontally reciprocating the moving plate 43.
It has 45 mag.

Next, a molding operation by the molding device 30 having the above configuration will be described. After the container 18 is sealed and the triangular flaps 18B and 18C are joined to the side surface and the upper surface of the container, they are sent to the station S11 by the carrier 25. When this container, that is, the package 18, stops at the station S11, the air cylinder 38 of the upper surface press 31 operates to lower the press member 37, and at the same time, the air cylinder 45 of the side surface press 32 also operates to move the press member 44 into the package 18 To move forward. This allows carrier 25
The upper pressing member 37 and the pressing members 44 on both sides are simultaneously pressed against the package 18 held by the upper and side surfaces of the package 18, and at this time, the package 18 has a bottom surface. And U-shaped carrier on the front and back in the direction of travel
Since it is constrained by 25, the six faces of the rectangular package 18 are eventually pressed, and the ridge lines of the package are bent at right angles,
Each side surface and the upper and lower surfaces are formed into a flat or slightly inwardly concave shape. Further, as can be seen clearly from FIG. 2, the upper surface press 31 and the side surface press 32 can simultaneously perform the molding operation on the two packages at the two stop positions.
The same package 18 will be molded twice. Thus,
A box-shaped package having a good appearance is produced.

In the above embodiment, each of the pair of side surface presses 32 provided on both sides of the carrier has an air cylinder 45 and press members.
Although 44 is configured to reciprocate laterally, the press member of one side press 32 is fixed at a fixed position, and only the press member of the other side press 32 is reciprocated to make a fixed press member and a movable press. The container may be sandwiched between the member and the member. Further, depending on the contents to be filled in the container, there is a case where the container (packaging body) is filled in a high temperature state and is still in a hot state when reaching the station S11. In such a case, it is preferable to cool the package or the pressing members 37, 44 with water. When the package is cooled, the side surfaces, the upper and lower surfaces of the package are slightly recessed, and there is an advantage that the package sits well when the package is erected and conveyed in a later process.

The liquid packaging apparatus of the above embodiment is a series of apparatuses for manufacturing a box-shaped container from a band-shaped sheet having paper as a base material, and filling and sealing the container with liquid, but the present invention is not limited to this case. It goes without saying that a box-shaped container having the shape shown in FIG. 4B may be formed in advance by another device, and the box-shaped container may be supplied to fill and seal the device. Further, the triangular flap at the lower end of the box-shaped container may be previously joined instead of being joined to the side surface of the container after filling the contents.

〔The invention's effect〕

As described above, in the liquid package device of the present invention, the box-shaped container having the upper end opening is filled with the contents, the upper end opening is sealed, the triangular flap is joined to the outer surface of the container, and then the container is U-shaped. While being held by the letter-shaped carrier, the upper surface and both side surfaces can be pressed by the press members to form the whole into a rectangular shape, and it is possible to manufacture a box-shaped package with a good appearance. It is a thing.

Further, since the pressing member has a convex shape on the upper surface of the box-shaped package, the upper surface of the package can be formed to have a shape that is slightly recessed inward, and the appearance can be improved. Furthermore, since the upper surface press and the side surface press for pressing the upper surface and the side surface of the package are respectively provided with two pressing members for pressing the package at the two carrier stop positions, each package is pressed twice. It is possible to perform good molding by pressing each one, and since the two press members are attached to a common lifting plate or moving plate, it is possible to make the mechanism for moving the structure simple. It also has the effect that it can be done.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the molding device provided in the liquid packaging device shown in FIG. 3 as seen from the traveling direction of the carrier. The left and right side surface presses 32 show cross sections at different positions. FIG. 2 shows the molding device. FIG. 3 is a schematic perspective view showing a liquid packaging device according to an embodiment of the present invention, and FIGS. 4A to 4E show the intermediate state and the final state of the container manufactured by the liquid packaging device. It is a perspective view shown. 18 …… Box-shaped container (packaging) 18B, 18C …… Triangular flap 25 …… U-shaped carrier, 30 …… Molding device 31 …… Top press, 32 …… Side press 37 …… Press member, 38 …… Air cylinder 44 …… Pressing member, 45 …… Air cylinder.

Claims (1)

[Claims] 1. A container having a U-shaped carrier in which a box-shaped container having an open upper end is held in an upright state, the carrier is intermittently run along a predetermined traveling path, and the carrier is held in the carrier on the way. The contents are filled into the container, the upper end of the opening is sealed, the upper end of the container is formed flat, and the triangular flaps formed on both sides of the upper end of the container are joined to the outer surface of the container at the time of forming to produce a box-shaped liquid-filled package. In the liquid packaging device, two carrier stop positions downstream of the position where the triangular flap is joined to the outer surface of the container are located at the upper surface press that presses the upper surface of the liquid filling package, and at both open portions of the U-shaped carrier. There is provided a molding device having side presses for sandwiching and pressing both side surfaces of the package, and the upper surface press is provided with an elevating plate provided to move up and down, and the lower surface thereof at the two carrier stop positions. Correspondingly, the two side presses have a downwardly convex pressing member, and the side press is provided with a moving plate provided so as to move laterally, and the two carrier stops are provided on the moving plate. A liquid packaging device comprising two press members attached in correspondence with positions.