JP2002264901A - Rotary-type liquid filling and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary-type liquid filling and packaging machine which has a reduced diameter of a turntable, dispenses with unnecessary mandrel and holder where no package processing (work) is done and can support high- speed filling without requiring a large installation space. SOLUTION: The rotary-type liquid filling and packaging machine includes a bottom molding side turntable 10a which is equipped with at least a bottom sealing means for seal-forming a bottom of a parallelopiped carton 3 and a top molding side turntable 10b which is equipped with at least a filling means for filling a liquid into the parallelopiped carton which has a bottom molded in and after the bottom sealing means and a top sealing means for heating and folding a top of the carton filled with the liquid for forming a sealed top. Both tables are placed so that they do not overlap each other, and a carrying means 13 for carrying the carton with the bottom formed from the bottom sealing means to the filling means is provided between both tables.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box made of a paper square cylinder having a square or rectangular cross section having a rotary type turntable transport mechanism, which is used for liquids such as juice, milk, liquid seasonings, and sake. The present invention relates to a rotary liquid filling and packaging machine for filling and packaging contents.

[0002]

2. Description of the Related Art In general, a liquid filling and packaging machine having a square or rectangular paper cross-section made of paper has a large number of folded flat rectangular paper-made cylinders (hereinafter referred to as cartons). A carton feeding step of feeding the carton one by one to the front, a raising step of raising the carton from a flat shape to a three-dimensional shape, and a mandrel (mandrel arm) for loading and supporting the raised carton to form a carton bottom portion. A bottom sealing process provided (hereinafter, a process until the bottom of the carton loaded in the mandrel arm is heated (or folded), folded (or heated), and press-sealed) is connected to the bottom molding process. A filling step of filling contents such as juice, milk and sake from the top opening of the carton, and an opening of the top of the carton. A heating step of heating (or a folding step of folding), a sealing step of folding (or heating) the heated (or folded) opening and sealing by pressing, and an unloading step of unloading a filled and sealed square cylindrical container (hereinafter, referred to as a “container”). The liquid container is filled with the liquid contents after the bottom molding, and the top portion is heated, folded, sealed, and carried out to form a top molding).

In general, the above-mentioned steps are performed in a linear line type liquid filling and packaging machine in which the above steps are linearly arranged and a carton is linearly conveyed by a linear line conveying mechanism. The above-described process is arranged at equal intervals in the circumferential direction, and is performed by any of a rotary-type liquid filling and packaging machine in which a carton is transported by a rotary transport mechanism using a turntable that rotates.

In the case of a linear line type liquid filling and packaging machine, as shown in the side view of FIG. 3, a mandrel 1 used for bottom molding is provided at one end of the line with a turntable 2.
, And are fixed vertically downwardly.

Then, the cartons 3 are taken out one by one from a magazine 4 in which a large number of flat cartons 3 are stacked, and the cartons 3 are formed into a rectangular cylindrical shape (raised) and then supplied to the mandrel 1. Attached and held,
While the turntable 2 rotates substantially one turn, in the bottom forming step T1, the bottom part (the lower part of the carton) of the carton 3 is folded, heat-sealed, and sealed.

The rectangular tube-shaped carton 3 whose bottom is sealed in the bottom forming step T1 is then pulled downward from the mandrel 1 and has a linear transport device L having holders attached at equal intervals to an endless chain. To the top of the carton 3 (the top of the carton) as required, and then a filling step T2 for temporarily folding the top of the carton 3 and a filling step T2. T4, top folding process (or heating process) T
5, heating step (or folding step) T6, top-part pressure-sealing step T7, cooling step T8 of washing and cooling the top-sealed carton 3 after heating and sealing as necessary, and filling while being transferred to unloading step T9. , Top fold, heating,
The top part is sealed and carried out.

Next, in a rotary type liquid filling and packaging machine,
As shown in the plan view of FIG. 4, the same process as that of the linear line type liquid filling and packaging machine is performed while the turntable is intermittently rotated, and the mandrels arranged at equal intervals on the circumference of the rotating turntable 10a. 1, the bottom forming step is performed while intermittently rotating, and the turntable 10b that rotates in conjunction with the turntable 10a while overlapping the turntable 10a.
The top molding is performed by intermittent rotation while holding the bottom sealed carton 3 by the holders 5 arranged at equal intervals on the circumference of.

Thus, the bottom molding-side turntable 1
The turntable 10a and the turntable 10b on the top molding side are arranged so that a part of the table overlaps each other, and the intermittent rotation of the turntable 10a on the bottom mold side and the turntable 10b on the top molding side are synchronized.

The bottom-forming carton 3 is moved toward the top-forming turntable 10b for forming the top portion thereof by intermittent rotation, so that the bottom-forming-side turntable 10b is directly above the holder 5 of the top-forming side turntable 10b. When the mandrel 1 arranged on the table 10a comes, the mandrel 1 is pulled out from the mandrel 1 to the holder 5 below,
The carton 3 moves to the top molding side turntable 10b.

In a general rotary type liquid filling and packaging machine, since the bottom forming side turntable and the top forming side turntable overlap each other, the mandrel 1 and the top forming side turntable disposed on the bottom forming side turntable 10a are arranged. The holder 5 arranged on the table 10b has
There is a mandrel 1 and a holder 5 in which the carton 3 does not exist temporarily (the carton 3 performing the packaging process does not exist).

Further, the bottom molding-side turntable 10
By arranging the top molding side turntable 10b so as to overlap the work space, the working space is narrowed and the maintainability is deteriorated. Further, as a conventional rotary liquid filling and packaging method, there is a rotary liquid filling and packaging method in which a bottom forming step and a top forming step are performed on a single turntable, as shown in Japanese Patent Application Laid-Open No. 7-61411. .

[0012]

In the above-described linear line type liquid filling and packaging machine, the line from the bottom molding to the top molding is long, the filling and packaging machine is large, the cost is high, and the equipment is large. This requires a large space for installation.

Further, in the above-mentioned rotary type liquid filling and packaging machine, the diameter of the turntable is increased due to the temporary presence of the mandrel and the holder in which the packaging process (work) is not performed. Due to the presence of the holder, the filling and packaging machine needs to be further increased in size to cope with high-speed filling, and a large installation space is also required.

An object of the present invention is to provide a rotary liquid filling and packaging machine as described above, in which the turntable is reduced in diameter to eliminate the useless use of mandrels and holders that do not perform packaging processing (work), and to be widely installed. An object of the present invention is to provide a liquid filling and packaging machine capable of coping with high-speed filling without requiring space.

[0015]

According to the present invention, there is provided a bottom forming side turntable 10a in which at least bottom sealing means for sealingly forming a bottom portion of a rectangular cylindrical carton 3 is provided;
A filling means for filling a liquid into a bottom-formed rectangular cylindrical carton after the bottom sealing means, and a top sealing means for heating and folding a top part of the carton 3 filled with the liquid to form a sealed top part. At least a top molding turntable 10b is arranged, and both tables are arranged without overlapping each other, and a transfer means 13 for transferring the bottom molded carton 3 from the bottom sealing means side to the filling means side is provided between the two tables. A rotary liquid filling and packaging machine characterized by the above-mentioned.

As described above, according to the present invention, a bottom portion (lower portion) of a square tubular or rectangular carton (paper square tubular body) having a square cross section is folded to form a sealed bottom portion. At least a sealing step, a filling step of filling a liquid into a bottom-formed rectangular cylindrical carton, and a top sealing step of forming a sealed top portion by folding an upper part of a liquid-filled carton cylindrical body In a liquid filling and packaging machine, a bottom sealing step of the carton, a filling step of filling the cylinder body of the bottom-formed carton with liquid after the bottom sealing step, and a top for heating and sealing the top part of the carton filled with liquid. The sealing process is performed on a separate turntable, and the turntable that performs the bottom forming process by arranging the two turntables without overlapping From the cylindrical body of the carton is a bottom shaped, and has a transfer means for transferring to the turntable to perform the filling process steps.

[0017]

While the bottom molding-side turntable 10a is intermittently rotating, the temporary stop position S1 of the table 10a is stopped.
The cartons 3, which are formed by forming a large number of flat cartons 3 from the carton magazine 4 into the mandrel 1 by the carton unloading and supplying means 11 and supplied to the mandrel 1, are supplied to the next temporary stop positions S2, S3, In step S4, the bottom part of the lower part of the carton is hermetically molded.

Next, the bottom molding side turntable 10a
Is stopped at the temporary stop position S5, the bottom-formed rectangular cylindrical carton 3 is transferred from the mandrel 1 of the turntable 10a to the holder 5 at the temporary stop position S6 of the top molding-side turntable 10b. You.

Then, if necessary, the next stop position S7
At (plug attaching means, step) and S8 (top folding means, step), a stopper is attached to the top part (carton upper part) of the carton 3 and the top part is temporarily folded.

At the next stop position S9 (filling means, step), the carton 3 is filled with liquid and the next stop position S1
At 0 (top part folding means, step), the top part is folded, the top part is heated at the next stop position S11 (top part heating means, step), and at the next stop position S12 (top part sealing means, step). The top part is sealed and the sealing of the top part is completed, and finally the stop position S13 (unloading means, process)
Then, the carton 3 sealed and packed in the container is carried out of the holder 5.

Between the stop positions S12 and S13, if necessary, a cooling means and a step for washing and cooling the top sealed carton 3 after heating and sealing are added.

[0022]

FIG. 1 is a plan view of a rotary type liquid filling and packaging machine according to the present invention.
0a and the top molding-side turntable 10b are shown connected by transfer means.

A mandrel 1 arranged at regular intervals along the circumference of the bottom forming turntable 10a that rotates intermittently around the support shaft 10c, and a top molding side turntable 10b that rotates intermittently around the support shaft 10d. The number of the holders 5 arranged at equal intervals on the outer circumference (or on the circumference) of the container is at least until the carton 3 is supplied to the filling and packaging machine, then the bottom is formed, and the contents are filled, sealed and packaged and carried out. For example, as shown in FIG. 1, the number of mandrels 1 installed on the bottom molding-side turntable 10a and the number of holders 5 installed on the top molding-side turntable 10b are eight as shown in FIG. They are set and arranged individually.

FIG. 2 shows a bottom molding-side turntable 10.
FIG. 3 is a partially enlarged perspective view of the mandrel 1 and the transfer means 13 (transfer means) of FIG. 1A. The mandrel 1 on the turntable 10a side is, as shown in FIG. 1 or FIG. They are arranged at intervals, and are fixed to the bottom molding-side turntable 10a by being vertically hung down along the circumference thereof.

The holder 5 on the turntable 10b side is provided on the outer periphery (or on the circumference) of the top molding turntable 10b.
At a regular interval, the carton 3 is attached and fixed with the direction of loading the holder being vertical.

By the intermittent rotation operation of the bottom forming-side turntable 10a, which temporarily stops at each of the stop positions S1 to S5, the flat carton 3 is turned from the carton magazine 4 to the mandrel 1 moved to the stop position S1. In order to carry out supply mounting, a carton supply device 11 is installed near the stop position S1.

A stop position S at which the mandrel 1 stops
After 1, there are provided three consecutive stop positions S2, S3, S4 that are temporarily stopped by intermittent rotation, and the mandrel 1 is inserted and held in the rectangular tube of the carton 3 corresponding to each position. The bottom portion of the carton 3 is folded, heated, and sealed as necessary to form a bottom sealing device. The bottom heating means 12a (or bottom folding means) is provided at the stop position S2, and the bottom folding means 12b is provided at the stop position S3. (Or bottom heating means), a bottom part pressure-sealing molding means 12c is sequentially installed at the stop position S4, and the bottom part is heated and folded in order by the means 12a, 12b, and 12c to form a tightly molded carton. 3 are sequentially transported to the next stop position S5.

Then, the bottom molding-side turntable 10
a stop position S5 and top molding side turntable 10b
Between the stop position S6 and the turntable 10a, the carton 3 with the bottom sealed at the stop position S5 is pulled out from the mandrel 1 downward while the turntable 10a is temporarily stopped.
A transfer (transfer) means 13 for transferring and loading to the holder 5 at the stop position S6 of the top molding-side turntable 10b that has been temporarily stopped is provided.

In the present invention, the structure of the transfer means 13 is not particularly limited as long as it can reciprocate between the mandrel 1 at the stop position S5 and the holder 5 at the stop position S6 while holding the rectangular carton 3. The present invention is not limited thereto. For example, an opening / closing bucket means for holding / transferring a carton, and an opening / closing grasping means which reciprocates along a guide rail or the like linearly, or a robot arm or hand may be used.

At a stop position S7 following the stop position S6, a plug supply means 14 for supplying a plug to the top of the carton 3 is provided.
At the next stop position S8, a plug welding means 15 for welding the plug to the carton 3 is provided, and at the next stop position S9, the liquid filling means 1 for filling the carton 3 with liquid.
6 are installed.

Three consecutive stop positions S10, S11, S1 at which the holder 5 temporarily stops after stopping at the stop position S9
2 includes a top heating means (or a top folding means) 17a, a top folding means (or a top heating means) 17b, and a top crimping / sealing molding means 17c as top sealing means for sealing the top portion of the carton 3 stepwise. The carton 3 which is installed in order and hermetically sealed at the top portion and filled and sealed is manufactured.

The carton 3 filled, sealed and packaged as described above is conveyed to the next stop position S13, and by the carton discharge means 18 installed at the stop position S13.
It is carried out of the machine.

Next, the manufacturing process of the liquid filling and packaging machine of the present invention from the supply of the carton 3 to the discharge of the carton 3 filled and packed with the liquid contents will be described based on the embodiment shown in FIG. Will be described.

First, as shown in FIG. 1, when the empty mandrel 1 stops at the stop position S1, the carton supply device 11
Is operated, and the cartons 3 which are accumulated in a flat state are taken out one by one from the carton magazine 4 while being raised so that the cross section becomes a rectangular tube-shaped carton 3 and stopped at the stop position S1. Move to just below the empty mandrel 1 inside.

Subsequently, the rectangular tubular carton 3 which has moved to the stop position S1 just below the empty mandrel 1 being stopped,
The mandrel 1 is inserted into the cylinder of the carton 3 by being pushed up by a pushing means (not shown) arranged directly below the lower part of the carton, and the carton 3 is attached to the mandrel 1.
Is temporarily held by the temporarily holding carton holding means provided in the above.

Next, the bottom molding side turntable 10a
Is rotated intermittently, and the carton 3 inserted into the mandrel 1 at the stop position S1 is sent to the next stop position S2, the bottom heating means 12a installed at the stop position S2 is operated, and the carton 3 Is heated so that the inner surfaces of the bottom portions can be welded to each other.

Then, the bottom molding-side turntable 10
The mandrel 1 at the stop position S2 in the intermittent rotation operation following
When the carton 3 inserted in the bottom is sent to the next stop position S3, the bottom folding means 1 installed at the stop position S3
2b is operated to fold the folding line of the carton bottom portion of the carton 3 inserted into the mandrel 1 to make a habit.

Subsequently, the bottom molding-side turntable 10
a, the mandrel 1 at the stop position S3 in the intermittent rotation operation following
When the carton 3 inserted in the box moves to the stop position S4,
Bottom crimping sealing molding means 1 installed at stop position S4
2c is operated, and the bottom of the carton 3 is pressed (pressed) to weld the melted surfaces of the bottom, and the bottom is sealed flat.

Then, the bottom molding side turntable 10
When the bottom sealed carton 3 at the stop position S4 is sent to the stop position S5 in the intermittent rotation operation following the step a, the bottom-formed square tubular carton 3 held by the mandrel 1 at the stop position S5 becomes The transfer means 13 is held by the transfer means 13 which has stopped moving near the stop position S5, pulled out from the mandrel 1, and is moved near the holder 5 at the stop position S6 of the top molding turntable 10b. Then, while the top molding-side turntable 10b is stopped, the carton 3 is moved to the stop position S6.
And the transfer (transfer) operation is completed.

The transfer means 13 has, for example, the structure shown in FIGS. 1 and 2, and is provided between the bottom molding turntable 10a and the top molding turntable 10b.
Square tubular carton 3 bottom molded from mandrel 1
A vertical transfer mechanism composed of a power cylinder 13d (pneumatic or hydraulic cylinder) for vertically moving an operating rod 13c with a suction cup 13a for pulling the lower part, and a rectangular cylindrical carton 3 pulled out of the mandrel 1. A power cylinder 1 for horizontally moving a movable body 13f to which a suction cup 13b for holding a side surface (any one of four side surfaces) is attached (via an arm 13e).
3g (pneumatic or hydraulic rod cylinder or rodless cylinder). The power cylinder 13g may be a rod cylinder using the movable body 13f as an operating rod or a linear guide type rodless cylinder using the movable body 13f as a linear guide follower.

The transfer means 13 in the present invention is means for transferring the carton 3 on which the bottom molding has been performed from the mandrel 1 of the bottom molding side turntable 10a to the holder 5 of the top molding side turntable 10b. If it has this function, it is not limited to the form of the transfer means shown in FIG.

In the above-mentioned transfer means 13 shown in FIG. 2, when the carton 3 with the closed bottom portion mounted on the mandrel 1 is sent to the stop position S5 of the bottom forming-side turntable 10a, the vertical transfer mechanism is turned on. Cylinder 13d
Is extended, the suction cup 13a attached to the distal end of the operating rod 13c rises, and the bottom surface of the bottom of the carton 3 is vacuum-sucked. The attached suction cup 13a descends, and the suction-held rectangular tubular carton 3 is pulled out of the mandrel 1 and detached below the mandrel 1.

When the rectangular tube-shaped carton 3 separates and moves below the mandrel 1, at least one side surface of the carton 3 stops at the position closest to the bottom forming side turntable 10a side. Suction cup 1 for holding and holding a carton attached to movable body 13f of the horizontal movement mechanism
3b.

Next, in the transfer means 13 shown in FIG. 2, the suction cups 13b of the horizontal moving mechanism, which is in close proximity to one side of the carton 3, move so as to contact one side of the carton 3 to hold the carton 3. Thereafter, the suction cup 13a of the vertical movement mechanism releases the vacuum suction, and the movable body 13 of the horizontal movement mechanism is released.
When f moves to the stop position S6 of the top molding-side turntable 10b while holding the carton 3 by suction, the carton 3 is transferred to a position directly below the holder 5 at the position of the stop position S6. It is pushed up by a pushing means (not shown) on the side and is loaded into the holder 5. When the transfer means 13 side of the holder 5 is provided with an opening and closing mechanism that can be opened and closed on both the left and right sides, a push-up means for pushing up the carton 3 can be omitted. May be loaded horizontally into the holder 5 which is opened at the same height.

Empty mandrel 1 at stop position S5
Moves to the stop position S1 due to the intermittent rotation of the bottom forming side turntable 10a, and the next carton 3 is newly supplied from the carton supply device 11 to the mandrel 1 moved to the stop position S1 in the same manner as described above.

The bottom-formed carton 3 supplied to the holder 5 at the stop position S6 is moved to the stop position S7 by the next intermittent rotation of the top forming turntable 10b, and the carton 3 moved to the stop position S7 is The plug is supplied by the plug supply means 14 provided opposite to the stop position S7.

The plug supply device 14 installed at the stop position S7 is, for example, a parts feeder for automatically inserting a plug into a plug mounting hole formed in the upper part of the carton 3. is there.

When the carton 3 is sent from the stop position S7 to the stop position S8 by the next intermittent rotation of the top molding-side turntable 10b, the plug welding means 15 (heat welding) provided opposite the stop position S8 closes the mouth. A stopper is welded to the top of the carton 3.

The top molding side turntable 10b
When the carton 3 moves from the stop position S8 to the stop position S9 by the intermittent rotation, the liquid filling means 16 provided opposite to the stop position S9 operates to fill a fixed amount of liquid content from the upper opening of the carton 3. .

With the next intermittent rotation of the top molding side turntable 10b, the carton 3 at the stop position S9 is moved to the stop position S1.
When it moves to 0, the top heating means 17a provided opposite to the stop position S10 is operated to heat the top portion (upper portion) of the carton 3 so that the inner surfaces of the top portion can be welded to each other.

When the carton 3 held by the holder 5 at the stop position S10 is moved to the stop position S11 by the next intermittent rotation of the top molding turntable 10b,
The top folding means 17b opposed to the stop position S11 is operated to fold the folding line at the top of the carton 3 filled with the liquid content, and the top is folded.

With the next intermittent rotation of the top molding side turntable 10b, the carton 3 at the stop position s11 is moved to the stop position S.
12, the top pressure-sealing molding means 17c opposed to the stop position S12 is operated, and the heated and melted and crimped top portion of the carton 3 is pressed (press-bonded) to weld the fused surfaces. Then, the top portion is molded and completely sealed, and the production of the product in the carton 3 which is liquid-filled and sealed is completed.

This liquid filled hermetically sealed carton 3
In the next intermittent rotation of the top forming turntable 10b, the carton 3 at the stop position S12 moves to the stop position S13. At the stop position S13, the carton 3 is held by the carton unloading means 18 provided opposite the stop position S13. 5 is carried out.

The holder 5 emptied at the stop position S13 by the intermittent rotation of the next top molding side turntable 10b moves to the next stop position S6. The square-shaped carton 3 with the bottom formed and transferred from the mandrel 1 at the stop position S5 of the forming-side turntable 10a to the stop position S6 is loaded, and the same operation is repeated thereafter.

As described above, each step of the stop positions S1 to S5 of the bottom molding turntable 10a and each of the stop positions S6 to S13 of the top molding turntable 10b.
Are performed at each intermittent rotation, and one product of the filled and sealed carton 3 is manufactured at each intermittent rotation.

The embodiments according to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, but can be variously modified.

In the embodiment described above, the three stop positions S2, S3, S
The sealing process of the bottom part of the carton 3 is performed in 4 and three stop positions S10 of the top molding side turntable 10b are performed.
In steps S11 and S12, the step of sealing the top portion of the carton 3 is performed. The number of the stop positions is not limited, and the bottom forming and the top forming may be performed at three or less or three or more stop positions.

Then, the bottom molding-side turntable 10
The rotation directions of the intermittent rotation of the a and the top forming side turntable 10b may be the same rotation direction, or may be the opposite rotation directions.

The bottom molding-side turntable 10a
And the total number of stop positions of the top molding side turntable 10
The total number of stop positions of b is appropriately determined according to the number of steps required for manufacturing a paper container product such as a carton 3 for liquid filling and packaging, or the type of the paper container product to be manufactured so as to obtain a space for disposing the apparatus. It may be increased or decreased.

In the above-described embodiment, the plug supply means 14 and the plug welding means 15 are provided on the turntable 10b on the top molding side. However, in the case of manufacturing a paper container product such as a carton 3 without a plug, Means these means 14, 15
In this case, the number of the holders 5 of the top molding-side turntable 10b can be reduced, and the rotation diameter of the top molding-side turntable 10b can be reduced by the reduced number of holders. The packaging machine can be downsized. Further, according to the present invention, there is no useless mandrel 1 and holder 5 where no work is performed, and the most efficient device configuration can be achieved.

[0061]

According to the present invention, the turntable for performing the bottom molding and the turntable for performing the top molding are separated, and the turntables are arranged without being overlapped with each other. By connecting, there is no useless mandrel and holder that does not perform work, there is no waste in the device, the most efficient device configuration is possible, the working space can be widened, and the maintainability is improved. Has a very high effect.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating an embodiment of a rotary liquid filling and packaging machine according to the present invention.

FIG. 2 is a partial perspective view illustrating an outline of an embodiment of the carton transfer means of the present invention.

FIG. 3 is a side view for explaining an outline of a conventional linear line type liquid filling and packaging machine.

FIG. 4 is a plan view illustrating an outline of a conventional rotary liquid filling and packaging machine.

[Explanation of symbols]

1. Mandrel 2. Turntable 2a ... Rotary shaft
DESCRIPTION OF SYMBOLS 3 ... Carton 4 ... Carton magazine 5 ... Holder 10a ... Bottom molding side turntable 10b ... Top molding side turntable 11 ... Carton supply device 12a, 12b, 12c ... Bottom sealing device 13 ... Transportation means 13a, 13b ... Suction cup 13c ... Operation Rod 13d ...
Cylinder 13e Arm 13f Movable body 14 Plug supply means 15 Plug welding means 16 Liquid filling means 17a, 17b, 17c Top sealing device 18 Unloading means T1 to T9 Top forming process S1 to S5 Bottom Molding-side turntable stop position S6 to S13 ... Top molding-side turntable stop position

Claims (1)

[Claims] 1. A bottom forming side turntable in which at least a bottom sealing means for sealingly forming a bottom portion of a rectangular cylindrical carton is disposed, and a liquid is filled into a bottom molded square cylindrical carton after the bottom sealing means. A top forming side turntable having at least a filling means and a top sealing means for heating and folding the top part of the carton filled with liquid to form a sealed top part, and both tables are arranged without overlapping each other. And a transfer means for transferring the bottom-formed carton from the bottom sealing means side to the filling means side between the two tables.