JP6875728B2 - Filling and packaging method and filling and packaging equipment - Google Patents

Description

The present invention relates to a filling and packaging method for filling a bag with an object to be filled and sealing an opening of the bag, and a filling and packaging device for carrying out the method.

The filling and packaging device that fills a bag with an object to be filled and seals the opening of the bag is roughly classified into a bag filling method and a bag making filling method as described in Patent Documents 1 and 2. In the bag-filling method, the package material that has already been made into a bag is filled with the material to be filled, and in the bag-making filling method, the material to be filled is filled while the packaging material is made into a bag.
The bag-filling type device has an advantage that the degree of freedom in bag design is high, and the bag-making filling type device has an advantage that the bag can be made compact, and each of them is used properly.

By the way, when it is necessary to prevent oxidation of the object to be filled, in any filling method, an inert gas such as nitrogen gas is filled in the bag, but air (oxygen) is contained in the bag. Since it is contained, the inert gas is filled while expelling the air, that is, the gas in the bag is replaced.
Recently, in order to further improve the production efficiency, it is required to complete the gas replacement in a short time, but it is not possible when the material to be filled is light and bulky like bonito flakes. If the replacement is promoted by strongly spraying the active gas, the filling material may fly up, and then biting may occur when the opening is sealed and sealed.

Japanese Unexamined Patent Publication No. 2014-218257 Japanese Unexamined Patent Publication No. 2008-7139

The present invention provides a novel and useful packaging filling method and packaging filling device that solves the above problems and can complete gas replacement in a short time without causing problems such as poor biting. The purpose is to do.
Another object of the present invention is to provide a horizontal bag-making filling type packaging filling device that can ideally realize the above packaging filling method.

The present invention has been made in order to achieve the above object, and the invention of claim 1 is described in that a bag having an opening at the upper side is filled with an aggregate-like material to be packed and an inert gas. When sealing the opening, after the bag body is filled with the filling material, a gas flow path that passes through the gap between the filling materials in the middle and flows in one direction is temporarily formed in the bag. In a filling and packaging device that implements a filling and packaging method in which an inert gas is exhausted from one end side of the gas flow path, gas is replaced by intake on the other end side, and then a seal is sealed. A pair of possible partition pieces, a bag-in-bag partitioning means for temporarily partitioning the inside of the bag in a U-shape, and a gas exhaust nozzle and intake gas that enter the bag and are separately arranged on both sides of the U-shape. A nozzle and an opening seal sealing means for sealing and sealing the opening of the bag body while leaving the insertion ports of the two nozzles are provided, and by the operation of the opening seal sealing means and the in-bag partitioning means. It is a filling and packaging device characterized in that a gas flow path is formed.

The invention of claim 2 is a horizontal bag-making filling method in which the packaging material is fed in the horizontal direction in the filling and packaging apparatus according to claim 1, and the vertical sealing means of the bag-making mechanism is used before filling the material to be filled. It is equipped with a pre-filling vertical sealing means for sealing while leaving the upper end side as an insertion port and a final vertical sealing means for sealing including the insertion port after gas replacement, and is temporarily molded into the bag body by the pre-filling vertical sealing means. , A filling and packaging apparatus characterized in that the horizontal sealing means also serves as an opening sealing sealing means.

A third aspect of the present invention, the filling and packaging apparatus according to claim 2, the packaging-material feeding direction rear side of the heater bar of the horizontal sealing means, packaging material two pipes in which the nozzle is provided at the distal end is in a horizontal posture It is a filling and packaging device that penetrates inside and one nozzle passes through a partition wall composed of a pair of partition wall pieces.

The invention of claim 4 is characterized in that, in the filling and packaging device according to claim 3 , one nozzle is an intake nozzle and the other nozzle is an exhaust nozzle, and the intake nozzle also has a cleaning function. It is a filling and packaging device.

The invention of claim 5 is the filling and packaging device according to claim 3 or 4 , wherein the intake nozzle is located on the front side in the packaging material feeding direction, and the exhaust nozzle is located on the rear side. is there.

The invention of claim 6 is the filling and packaging apparatus according to any one of claims 1 to 5 , in which the insertion port into which the two nozzles are inserted is temporarily closed by using a pair of holding pieces that can be brought into contact with each other. It is a filling and packaging device including a closing means.

The invention of claim 7 is the filling and packaging device according to any one of claims 1 to 6 , wherein gas is exhausted and taken in through a perforated nozzle.

According to the packaging filling method of the present invention, gas replacement can be completed in a short time without causing problems such as poor biting.
Further, according to the horizontal bag-making filling type packaging filling device of the present invention, the above packaging filling method can be ideally carried out.

It is a perspective view of the package filling apparatus of the horizontal bag making filling type which concerns on embodiment of this invention. It is an extraction figure which extracted the main element from FIG. It is explanatory drawing of the transition of the packaging material by the operation of the apparatus of FIG. It is a perspective view of the gas replacement mechanism of FIG. It is a partially enlarged view of FIG. It is explanatory drawing of the gas flow path formation in the gas replacement mechanism of FIG. It is a timing chart of the operation of the gas replacement mechanism of FIG. It is explanatory drawing of the gas replacement process of FIG. It is a top view of the shavings pack manufactured by the packaging filling apparatus of FIG.

The packaging filling device 1 according to the embodiment of the present invention will be described with reference to the drawings.
In this packaging filling device 1, the bonito flakes K are filled and packaged in the bag body B. As shown in FIG. 9, the bag body B has a flat bag shape, and the rectangular packaging material S is formed. It is folded in half and the edges of the three sides are aligned and overlapped, sealed and sealed to make a bag. The seal portions of the bag body B are labeled as two opposing vertical seal portions T (1/2) and a horizontal seal portion Y so that they can be easily distinguished. The bonito flakes K are filled with nitrogen gas N, which is an inert gas, and sealed in a seal to form a bonito flakes pack P.

As shown in FIGS. 1 to 3, the packaging filling device 1 has a horizontal bag-making filling method, and a continuous strip-shaped packaging material S is pulled out from a raw fabric roll (not shown), and is indicated by an arrow in FIG. As shown, it is fed intermittently from the left to the right, so the left is the rear side in the packaging material feeding direction and the right is the front side. In the process of feeding the packaging material, as shown in FIG. 3, bag making, filling of shavings K in the bag, and filling of nitrogen gas N by gas replacement proceed in parallel.
From the rear side to the front side in the packaging material feeding direction, the folding means 3 of the bag making mechanism, the vertical sealing means 9 before filling, the seal cooling means 13, the horizontal sealing means 17, the final vertical sealing means 21, and the cutting means 25 A pair of clamp pieces of the packaging material feeding means 29 clamp and pull the packaging material S and feed the packing material S from the left to the right, and the vertical sealing means 9 before filling and the sealing cooling means 13 are sequentially arranged. The contact of the packaging material S by the horizontal sealing means 17, the final vertical sealing means 21, and the cutting means 25 is performed while the packaging material S is stopped for a moment by the intermittent operation of the packaging material feeding means 29.

In the folding means 3, the packaging material S is fed along the triangular guide plate 5 so that the packaging material S is folded in half in the width direction with the lower side as the folding portion, and is sandwiched between the pair of sandwiching rollers 7 and 7. The upper edges are overlapped with each other aligned.
In the pre-filling vertical sealing means 9, a temporary vertical sealing portion T (p) is formed by being pressed by a pair of heater bars 11 and 11 provided along the packaging material feeding direction. The temporary vertical seal portion T (p) extends in the vertical direction of the packaging material S, but stops on the way to the upper edge portion, and is wrapped through the portion where the temporary vertical seal portion T (p) is missing. Both sides in the material feeding direction are open.
In the seal cooling means 13, the temporary vertical seal portion T (p) is cooled by being pressed against a pair of cooling bars 15 and 15 provided along the packaging material feeding direction. Three sets of the pair of cooling bars 15 and 15 are arranged at a distance from each other, and are gradually cooled in three stages.

In the horizontal sealing means 17, the upper edge portions are overlapped and pressed by a pair of heater bars 19 and 19 provided along the packaging material feeding direction to form the horizontal sealing portion Y.
In the final vertical sealing means 21, the vertical sealing portion T is formed by being pressed by a pair of heater bars 23, 23 provided along the packaging material feeding direction. The vertical seal portion T is formed by being superposed on the temporary vertical seal portion T (p) described above and further extended to the upper edge portion.
In the cutting means 25, a pair of cutter holding bars 27, 27 provided along the packaging material feeding direction cuts the vertical seal portion T in the middle in the width direction.

In this bag-making mechanism, the packaging material S is folded in half by the operation of each of the above-mentioned means, and temporary vertical seal portions T (p) are sequentially formed from the packaging material feeding direction destination side at a predetermined interval to be continuous. It is formed into a temporary bag body B (p) in the shape of a shape, and a horizontal seal portion Y is formed on the upper edge portion of the temporary bag body B (p). At this point, the upper sides of the temporary vertical seal portions T (p) on both sides are opened without being sealed and are left as insertion ports A, respectively. After that, the insertion port A is sequentially sealed from the destination side in the packaging material feeding direction to become the vertical seal portion T. Since the vertical seal portion T is cut, when the vertical seal portion T on the rear side in the packaging material feeding direction is cut, it is separated from the subsequent packaging material S, and bag making is completed.
Therefore, the vertical seal portion T (1/2) of the shavings pack P shown in FIG. 9 has a width dimension that is half that of the vertical seal portion T formed by the final vertical seal means 21.

The filling mechanism of bonito flakes K is assembled to the bag making mechanism described above. The filling mechanism is provided with a supply chute 33. The lower end opening of the supply chute 33 enters the upper end portion of the temporary bag body B (p) from the opening surrounded by the upper edge portion of the temporary bag body B (p). A push-in piece 35 that can be raised and lowered is provided inside the supply chute 33, and the push-in piece 35 descends and enters the bag body B (p). The diameter of the push-in piece 35 is increased so as not to form a large gap with the opening. Further, the pressing piece 35 is made of an elastic material so as not to break the packaging material S.
The light and easy-to-fly shavings K are guided and filled in the temporary bag body B (p) by the pressing by the pressing piece 35.
Further, another pressing piece 37 is separately provided on the side ahead of the supply chute 33 in the direction of feeding the packaging material. The push-in piece 37 can also operate in the same manner as the push-in piece 35 described above, and the soaring portion of the shavings K filled in the temporary bag body B (p) can be pushed downward. By this re-pushing, biting during the subsequent formation of the lateral seal portion Y is prevented, but compression is not achieved due to the formation of the gas flow path described later.

As shown in FIGS. 4 and 5, a pair of partition wall pieces 39, 39 are provided as a gas replacement mechanism on the side of the heater bar 19 of the lateral sealing means 17 in the direction of feeding the packaging material. Each partition piece 39 is formed in a flat plate shape, the plate surface is parallel to the packaging material feeding direction, and the plate thickness portion facing the packaging material S side constitutes the pressing surface 41.
The partition wall 43 is formed by pressing the pressing contact surfaces 41, 41 of the pair of partition wall pieces 39, 39 with each other via the overlapping packaging material S. Each partition piece 39 is provided with a semicircular notch 45 on the pressing surface 41 side, and when the partition 43 is formed, the two notches 45 and 45 are connected to form a perfect circular insertion hole 47. It is designed to be configured.
Since the partition wall 43 extends downward from the upper edge portion of the temporary bag body B (p) and its lower end is in front of the folded portion, the inside of the temporary bag body B (p) is as shown in FIG. Will be partitioned in a U shape.

A main body 49 is fixed to the stationary side of the filling and packaging device 1, and a pair of fingers 51, 51 are pendulum-like rotatably attached to the main body 49 in the same vertical plane. The pair of partition wall pieces 39, 39 described above are separately connected to the pair of fingers 51, 51, and the partition wall 43 is temporarily formed in conjunction with the rotation of the fingers 51, 51.

A pair of closing pieces 53, 53 are provided between the pair of heater bars 19 and 19 of the lateral sealing means 17 and the pair of partition wall pieces 39 and 39. The closed piece 53 also has the same configuration and arrangement as the partition piece 39, and the pressing contact surfaces 55 and 55 of the closed pieces 53 and 53 face each other and press the packaging material S against each other to push the packaging material S into the insertion port. A is temporarily closed. Further, the two notches 57 and 57 form an oval insertion hole 59 that is long in the vertical direction. The upper end position of the insertion hole 59 is set to be the same height as the upper end position of the insertion hole 47 of the partition wall 43.

Since the purpose of the closing piece 53 is to close the insertion port A of the temporary bag body B (p), the lower end thereof is at a position higher than the partition wall 43 during the closing operation.
The closing piece 53 is fixed to the stationary side of the filling and packaging device 1 via the main body 61, fingers 63, and 63, similarly to the partition piece 39.
The partition walls 39, 39 partition the temporary bag body B (p) at the center position in the lateral direction, and the closing pieces 53, 53 set each other's positions so as to close the insertion port A on the left side of the temporary bag body B (p). Has been done.

Reference numeral 65 indicates an intake pipe, and an intake nozzle 67 is attached to the tip of the intake pipe 65. As shown in the enlarged view of FIG. 5, the intake nozzle 67 is made of sintered metal, and a large number of through holes 69 are formed on the side portions. The base end side of the intake pipe 65 is branched, one is provided with an intake fan (not shown), and the other is connected to a gas cylinder (not shown) containing compressed nitrogen gas N. A solenoid valve is interposed in each branch pipe, and ON / OFF on the intake fan side and ON / OFF on the gas cylinder side can be independently controlled by opening and closing the solenoid valve. However, when both are ON, the exhaust side becomes dominant, and the intake nozzle 67 can exhaust gas for cleaning the through hole 69.

The intake pipe 65 enters the feeding path of the packaging material S from above on the rear side of the pair of heater bars 19 and 19 of the lateral sealing means 17 in the packaging material feeding direction, and thereafter, the heater bars 19 and 19 are placed in a horizontal posture. It wraps around to the lower side and extends to the front side in the packaging material feeding direction. The tip side has a length that exceeds the heater bars 19 and 19 and further exceeds the partition wall 43, but the insertion hole 59 formed when the closing pieces 53 and 53 are closed and the insertion hole 47 of the partition wall 43 are intake pipes. Since it is located in the extending direction of 65, it can pass through these.

Reference numeral 71 indicates a gas exhaust pipe, and an exhaust nozzle 73 is also attached to the tip of the exhaust pipe 71. The exhaust nozzle 73 is also configured in the same manner as the intake nozzle 67, and a large number of through holes 75 are formed on the side portions. A gas cylinder containing compressed nitrogen gas N is connected to the base end side of the exhaust pipe 71, and ON / OFF of the gas cylinder side can be controlled by opening and closing the solenoid valve.
Similar to the intake pipe 65, the exhaust pipe 71 enters the feeding path of the packaging material S on the rear side of the pair of heater bars 19 and 19 of the lateral sealing means 17 in the packaging material feeding direction from above, and then further the intake pipe 65. It wraps around to the lower side and extends in parallel with the intake pipe 65 to the front side in the packaging material feeding direction. The exhaust pipe 71 is shorter than the intake pipe 65, and the exhaust nozzle 73 is located in front of the partition wall 43.

Therefore, as shown in FIG. 6, in the bag of the temporary bag body B (p) which is the target of gas replacement, the intake nozzle 67 is located at the upper part of the right section of the temporary bag body B (p) partitioned by the partition wall 43. Will be located, and the exhaust nozzle 73 will be located at the top of the left compartment. Since the left outlet A to which the pipes 65 and 71 are actually inserted and widened is closed by a pair of closing pieces 53 and 53, when the gas exhaust and intake operations are turned on in this state, the bag Inside, a U-shaped gas flow path that forcibly flows in one direction is formed as shown by the arrow. Since the partition wall 43 also penetrates into the layer in which the bonito flakes K are accumulated, this gas flow path passes through the layer. Further, since the nitrogen gas N is exhausted in the form of mist from a large number of through holes 75 of the exhaust nozzle 73, the shavings K are agitated. Therefore, even if the exhaust pressure is not so high, that is, the shavings K is not so high that it soars violently, the air originally present in the temporary bag body B (p) is replaced with nitrogen gas N in a short time.

The timing of the motor drive and the opening / closing operation of the solenoid valve is as shown in FIG. 7. Focusing on the operation of the replacement gas mechanism, as shown in FIG. 8, the temporary bag body B (p) is shown in FIG. When it is sent to the indicated position and stopped, the pair of heater bars 23, 23 of the final vertical sealing means 21 starts to close in advance, and the partition pieces 39, 39 and the closing pieces 53, 53 start to close in the middle, and both are completely closed. After the gas replacement configuration is established, intake starts from the intake pipe 65 side, and exhaust of nitrogen gas N on the exhaust pipe 71 side starts later. Therefore, the temporary bag body B (p) is once flattened by the preceding intake air, then returns to the bulge by the start of exhaust gas, and the gas replacement proceeds steadily.

When the gas replacement is completed, the partition pieces 39, 39, etc. are opened, and the feeding of the packaging material S can be restarted. However, at that time, the vertical seal portion T is formed on the destination side in the packaging material feeding direction. The side is closed. After that, the packaging material feeding is restarted, but the intake and exhaust continue, and before the partition pieces 39, 39 and the closing pieces 53, 53 reach the predetermined positions and close again with respect to the subsequent temporary bag body B (p). First, the exhaust is stopped, and then the intake is stopped, so that the gas replacement for the temporary bag body B (p) is completely completed.
In this way, even when the intake nozzle 67 retracts relatively from the insertion port A with respect to the temporary bag body B (p) and reaches the side where the exhaust nozzle 73 of the temporary bag body B (p) is located. The air will be taken in, and the air that has deviated from the gas flow path and stayed near the nozzle will also be taken in without leakage.

Immediately before the intake by the intake nozzle 67 is stopped, the solenoid valve of the gas cylinder containing the nitrogen gas N is turned on for a moment, and the intake nozzle 67 exhausts the nitrogen gas N at that time. That is, cleaning is performed to sweep out the shavings K that are entangled in the through hole 69 or that are floating in the vicinity thereof. After undergoing this cleaning, the intake nozzle 67 performs gas replacement in the subsequent temporary bag body B (p), and the gas replacement rate does not decrease even in continuous operation.

According to the horizontal bag-making filling method, the gas flow path can be easily configured by using the horizontal seal portion Y, and the intake pipe 65 and the exhaust pipe 71 are placed in the temporary bag body B (p) as the packaging material S. It can be taken in and out automatically by using the feed movement of the bag, and the atmosphere inside the bag is guided in the gas replacement direction until just before the seal is completely sealed, so the gas replacement rate can be raised to the utmost efficiency. ..

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the invention can be made even if there is a design change within a range not deviating from the gist of the present invention. included.
In the above embodiment, a bag-making filling type packaging filling device is shown, but the present invention is not limited to this, and a bag feeding device that supplies a prefabricated bag to the device to fill the material to be filled is provided. It can also be applied to a filling type packaging filling device.

1 ... Horizontal bag making filling device 3 ... Folding means 5 ... Guide plate 7 ... Holding roll 9 ... Vertical sealing means before filling 11 ... Heater bar 13 ... Seal cooling means 15 ... Cooling bar 17 ... Horizontal sealing means 19 ... Heater bar 21 ... Final vertical sealing means 23 ... Heater bar 25 ... Cutting means 27 ... Cutter holding bar 29 ... Packaging material feeding means 31 ... Clamp piece 33 ... Supply chute 35, 37 ... Pushing piece 39 ... Bulk partition piece 41 ... Pushing surface 43 ... Bulk partition 45 ... Notch 47 ... Insertion hole 49 ... Main body 51 ... Finger 53 ... Closed piece 55 ... Pressing surface 57 ... Notch 59 ... Insertion hole 61 ... Main body 63 ... Finger 65 ... Intake pipe 67 ... Intake nozzle 69 ... Through hole 71 ... Exhaust pipe 73 ... Exhaust nozzle 75 ... Through hole S ... Packaging material T ... Vertical seal part T (p) ... Temporary vertical seal part Y ... Horizontal seal part B ... Bag body B (p) ... Temporary bag body K ... Shaving section N ... Nitrogen gas A ... Outlet

Claims (7)

When the bag body having the opening on the upper side is filled with an aggregate-like material to be filled and an inert gas, and then the opening is sealed and sealed .
After the bag body is filled with the filling material, a gas flow path that passes through the gap between the filling materials in the middle and flows in one direction is temporarily formed in the bag, and the gas flow path is not formed from one end side of the gas flow path. In a filling and packaging device that implements a filling and packaging method in which an active gas is exhausted and the gas is replaced by intake air on the other end side, and then the seal is sealed.
As a gas replacement mechanism
A pair of septum pieces that can be attached and detached to temporarily partition the inside of the bag in a U shape, and a partitioning means inside the bag.
The gas exhaust nozzles and intake nozzles that enter the bag and are separately arranged on both sides of the U-shape,
An opening seal sealing means for sealing and sealing the opening of the bag body while leaving the insertion ports of the two nozzles is provided.
A filling and packaging device characterized in that a gas flow path is formed by the operation of the opening seal sealing means and the bag inner partitioning means . In the filling and packaging apparatus according to claim 1,
It is a horizontal bag filling method that sends the packaging material in the horizontal direction.
The vertical sealing means of the bag making mechanism is provided with a pre-filling vertical sealing means for sealing by leaving the upper end side as an insertion port before filling the material to be filled, and a final vertical sealing means for sealing including the insertion port after gas replacement. And
A filling and packaging device characterized in that the bag body is temporarily molded by the vertical sealing means before filling, and the opening sealing means is also used by the horizontal sealing means . In the filling and packaging apparatus according to claim 2,
From the rear side of the heater bar of the horizontal sealing means in the packaging material feeding direction, two pipes provided with nozzles at the tips enter the packaging material in a horizontal posture, and one nozzle is composed of a pair of partition pieces. A filling and packaging device characterized by passing through a partition wall. In the filling and packaging apparatus according to claim 3,
A filling and packaging device characterized in that one nozzle is an intake nozzle and the other nozzle is an exhaust nozzle, and the intake nozzle also has a cleaning function. In the filling and packaging apparatus according to claim 3 or 4.
A filling and packaging device characterized in that the intake nozzle is located on the front side in the packaging material feeding direction and the exhaust nozzle is located on the rear side. In the filling and packaging apparatus according to any one of claims 1 to 5,
A filling and packaging device comprising a temporary closing means for temporarily closing a insertion port into which two nozzles are inserted by using a pair of holding pieces that can be brought into contact with each other. In the filling and packaging apparatus according to any one of claims 1 to 6.
A filling and packaging device characterized in that gas is exhausted and taken in through a perforated nozzle.

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