JP2008007139A - Compression filling packaging method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compression filling packaging method with a high packaging capability which fills an article to be packaged in a state that the article to be packaged is compressed to a small bulk and performs gas substitution. <P>SOLUTION: In a compression filling machine 15 composed of pushing rods 25 pushing the article to be packaged fed in respective funnels 18 and movable in the vertical direction, the article to be packaged (dried bonito flakes k) fed in the funnel 18 is pushed by the pushing rod 25 to cause a small bulky state. In a filling process of the packaging machine P, at approximately the same time as inserting an opening for the falling of a lower funnel 35 into a packaging bag (a), the article to be packaged in the funnel fills the packaging bag. In a temporary sealing process, a gas filling nozzle 8 is inserted into the packaging bag and the temporary sealing of a bag opening b is applied by a temporary sealing means 55 leaving the surroundings of the nozzle. In a top sealing process, the gas filling nozzle is taken out of the packaging bag and the bag opening is sealed by a sealing means 70. In the following post-process, after the sealed part is cooled, a gripped state caused by a pair of grips g is released to discharge the packaging bag (a) to the outside of the machine. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a packaging method for automatically filling a packaging bag in a state in which an article to be packaged such as a shaving node that is light and easy to rise is compressed into a small bulk.

  Japanese Patent Publication No. 58-52890 discloses an example of a conventional gas-filled packaging apparatus according to the present applicant. This "equipment for gas filling and sealing for continuous packaging machines" supports a packaging bag by a grip pair provided on a rotary table so as to intermittently transfer, and fills an object to be packed during the transfer. A gas comprising a device for filling an article to be packaged and a pair of sandwiching plates provided on a rotary table to support and intermittently transfer the packaging bag and inject an inert gas into the packaging bag and a heat sealing means for the bag mouth Two devices of the filling device are structured to be connected to one machine stand as a delivery process for each stop process.

  In the conventional gas-filling-type packaging device, which consists of a package filling device and a gas filling device, a rotary table having a grip pair and a rotary table having a sandwich plate and a welding bar are separately driven. It has a complicated structure that is intermittently driven by a mechanism. For this reason, when the packaging bag is delivered from the grip pair of the packaged filling device to the sandwiching plate of the gas filling device, the packaging bag falls due to unsuccessful delivery or the sandwiching plate of the gas filling device. There is a problem that it is not supported in a normal state. In addition, the packaging capacity was about 20 bags per minute because the speed could not be increased so as to ensure the delivery operation of the packaging bags.

  In addition, when the packaged item is light and fluffy like a shaving node, it tends to rise when filling the packaging bag, and some of it will pop out or adhere to the inner surface of the bag mouth There is. Further, in a state where the packaged item is stored in a bulky state in the packaging bag, the gas filling operation is hindered because it rises when a nozzle is inserted into the packaging bag and an inert gas is injected in a subsequent process. In order to cope with such a problem, the present applicant has developed a pushing device that reduces the bulk by compressing an article to be packaged, such as a shaving node, put into the packaging bag with a push rod (Japanese Patent No. 2520262). However, even in this pushing device, if the pushing operation is made faster, the packaged material will rise and become unsettled, so it cannot be made too fast, so it has been difficult to increase the packaging ability.

Japanese Patent No. 3742042 discloses an “inert gas filling method in a packaging machine” in which a packaging bag is filled with an object to be packaged and an inert gas and a bag mouth is sealed using a single intermittent rotary table. Has been. Although this packaging method can be applied to bagging of shaving clauses, the shaving clause is not configured to be filled into a packaging bag in a compressed and small-bulk state to perform gas replacement. The phenomenon of soaring cannot be suppressed.
Japanese Patent Publication No. 58-52890 Japanese Patent No. 2520262 Japanese Patent No. 3742042

  An object of the present invention is to provide a compression filling packaging method having a high packaging ability for filling a packaging bag and performing gas replacement in a state where the article to be packaged is compressed into a small bulk.

In order to achieve the above object, according to the first aspect of the present invention, a rotating body provided with a number of grip pairs in a radial direction is intermittently stopped and moved by a plurality of processes by intermittent drive means, and suspended by each grip pair. In a rotary packaging machine in which a packaging bag supported in a lowered form is filled with a predetermined amount of compressible packaging and filled with an inert gas by a gas filling nozzle to seal the bag mouth,
A rotating plate that rotates intermittently in synchronism with the rotating body, a plurality of funnels arranged on the rotating plate at equal angular intervals from the center of rotation, and the bottom surface of each funnel is always closed to be packaged in a packaging bag Provided with a compression filling machine comprising a shutter that opens the bottom surface when an object is charged, and a push bar that is movable in the vertical direction to press the articles to be packaged that are respectively loaded into each funnel from the weighing means. A lower funnel is provided that inserts a drop port at the lower end into the bag mouth of the packaging bag to be stopped in the process and allows the bag to escape from the bag mouth after filling the packaged goods.
In the compression filling machine, the packaged material put into the funnel is pressed from above with the push rod to reduce the bulk, and the packaging bag opened in the filling process of the packaging machine Almost at the same time when the lower funnel drop port is inserted into the mouth, the packed object in the funnel is pushed into the packaging bag by the push rod, and the gas filling nozzle is used in the temporary sealing step. Is inserted into the packaging bag and a temporary seal is applied to the bag mouth to leave the periphery of the nozzle, and then the inert gas is discharged from the gas filling nozzle while the packaging bag moves several steps. By shaking the packaging bag with vibration means while blowing out the gas, the gas replacement is promoted and the packaged object is swollen, and in the top sealing step, the gas filling nozzle is allowed to escape from the packaging bag and the top of the packaging bag. The bag mouth is sealed by the sealing means in a state where the air is pushed out by the pressing means and the air in the bag is expelled, and in the subsequent subsequent process, the sealing portion applied in the previous process is cooled and then gripped by the grip pair. It is characterized in that the wearing state is released and the packaging bag is discharged out of the machine.

  In order to achieve the same object, the invention described in claim 2 is the compression filling packaging method according to claim 1, wherein the compression filling machine compresses the article to be packed to reduce the bulk. The gas replacement is performed by injecting an inert gas from a gas nozzle provided on the rod.

  In order to achieve the same object, the invention described in claim 3 is the compression filling packaging method according to claim 1 or 2, wherein the article to be packaged placed in the funnel is pressed in the lateral direction. By performing the pressing operation with the push rod, the volume of the packaged item is reduced.

  In order to achieve the same object, the invention described in claim 4 is the compression filling packaging method according to any one of claims 1 to 3, wherein a pushing means is provided immediately after the filling process, and the pushing means is provided. Pressing the object to be packaged in the packaging bag with the push rod further reduces the bulk and blows away the object to be packaged adhering to the inner surface of the bag mouth by the pressure air ejected from the small hole provided in the push bar. It is characterized by that.

(Invention of Claim 1)
In this compression filling packaging method, the packaging bag is filled and compressed in a small volume, and gas replacement is performed, so that 20 bags per minute according to the conventional method is reduced to about 30 bags per minute. Packaging ability can be improved. Thereby, it is optimal for packaging of articles to be wrapped such as shaving nodes that are light and easy to rise. Furthermore, since it is a method of filling the packaging bag in a state where the packaged item is made small, the packaging bag can be smaller than the conventional method, which contributes to a reduction in packaging material cost.

(Invention of Claim 2)
In this compression filling packaging method, since the inert gas is blown and gas replacement is performed when the packaged material is made small in volume by the compression filling machine, the residual oxygen rate in the packaging bag is lowered as a result. Quality is improved.

(Invention of Claim 3)
In this compression filling and packaging method, the volume of the package can be further reduced by performing the pressing operation with the push rod in a state where the package to be packaged in the funnel is pressed in the lateral direction. Smaller than conventional methods.

(Invention of Claim 4)
In this compression filling packaging method, the volume of the packaged item can be further reduced by performing the second pressing operation in the step immediately after the filling step. In addition, it is possible to satisfactorily seal the bag mouth by blowing away the object to be packaged attached to the inner surface of the bag mouth.

  The best mode of the present invention will be described below with reference to the drawings. 1 is a side view of a gas filling type packaging machine to which the compression filling packaging method of the present invention is applied, FIG. 2 is a plan view of the same, FIG. 3 is a process explanation diagram of the packaging machine, and FIG. 4 is a process explanation diagram of the compression filling machine. FIG. 5 is a schematic view for explaining a method of compressing the article to be packed in the transverse direction in the compression filling machine.

  FIG. 1 and FIG. 2 show a gas filling type packaging machine P to which the “compression filling packaging method” of the present invention is applied. The rotary packaging machine P includes a compression filling machine 15, a weighing device (not shown), an inert gas supply device, etc., and a bag feeding process (A), a printing process (B), such as a shelf life, and an opening.・ Printing confirmation process (c), filling / pushing of packaged objects such as shavings (d), second pushing process (e), temporary sealing process (f), gas replacement / brushing process (g) to (d) ), A top sealing step (f), a cooling step for the seal portion (ii), a step for detecting the biting of the article to be packaged into the seal portion (t), and a product discharging step (t). The packaged material handled in this embodiment is a “shaving k” that is light and easy to rise.

  On the machine base 1 of the packaging machine P, there is provided a stand 2 that freely supports a longitudinally oriented intermittent rotating shaft (not shown), and a disc-shaped rotating body 3 attached to the intermittent rotating shaft includes: Sixteen grip pairs g (the same number as the number of steps) for gripping or releasing the packaging bag a in which only the bag mouth b is opened are provided so as to protrude radially at equal angular intervals. The bag feeding apparatus 10 arranged in the bag feeding step (A) separates a large number of packaging bags a stacked on the supply table 11 one by one from above by a suction means provided with a suction cup (not shown). It is a known structure that is supplied to the grip pair g in a state of being suspended with the bag mouth b facing up.

  As shown in FIG. 1, a pair of guide bars 5 are erected in parallel on the outer peripheral edge of the rotating body 3 so as to correspond to the center positions of the grip pairs g, respectively. The upper ends of the guide bars 5 are attached to the ring plate 6. Reference numeral 7 denotes a slider that is mounted on the guide bar 5 so as to be movable in the vertical direction, and 8 is a gas filling nozzle that is vertically attached to the front surface of the slider 7. These gas filling nozzles 8 are provided so as to be inserted into the packaging bag a in the temporary sealing process (f) by a lifting control rod (not shown) and escape from the packaging bag a in the top sealing process (f). .

  In addition, about the raising / lowering mechanism which raises / lowers the said gas filling nozzle 8 in a specific process, it is set as the structure according to the content disclosed by the patent gazette of the patent 2884064 which this applicant owns. The gas filling nozzle 8 is provided so that a gas such as nitrogen gas or carbon dioxide gas having a predetermined pressure is supplied from an inert gas supply device. About an inert gas supply system, it is set as the structure according to the content disclosed by the patent gazette of the patent 2619795 which this applicant owns.

  The tack seal means is configured in accordance with the contents disclosed in Japanese Patent No. 2668324 owned by the present applicant.

  The compression filling machine 15 is provided with a stand 16 on a machine base 1 that freely supports a vertical intermittent rotation shaft (not shown) on a machine base 1, and a disc-like rotating body 17 attached to the intermittent rotation shaft is provided from the rotation center. A plurality, in this case, eight funnels 18 are arranged vertically at equal angular intervals. The rotating body 17 is controlled to rotate intermittently in synchronization with the rotating body 3. The lower surface of the rotating body 17 always closes the bottom surface of each funnel 18, and on the other hand, the shutter 19 operates to open the bottom surface when the cutting node k is put into the packaging bag a in the filling / pushing-in process (d) of the article to be packaged. Is provided.

  A pair of guide bars 21 are erected in parallel on the outer peripheral edge of the rotating body 17 so as to correspond to the center positions of the funnels 18 respectively. The upper ends of the guide bars 21 are attached to the ring plate 22. Reference numeral 23 denotes a slider mounted on the guide bar 21 so as to be movable in the vertical direction. Reference numeral 25 denotes a push bar attached to the front surface of the slider 7 in the vertical direction. These push rods 25 have a function of making the shaving k k small by pressing the shaving k that is put into the respective funnels 18 from the weighing means from above, and by pushing the shaving k k made small in size into the packaging bag a Has the function of

  In addition, about the raising / lowering mechanism which raises / lowers the said push rod 25, it is set as the structure according to the raising / lowering mechanism in the said gas filling nozzle 8. FIG. In addition, a gas nozzle (not shown) may be provided on the push rod 25, and gas replacement may be performed by blowing an inert gas from the gas nozzle when the shaving k is compressed to a small volume.

As for the funnel 18, the cylindrical portion 18a has a cylindrical shape. However, in order to reduce the bulk of the cutting node k, as shown in FIG. 5, the volume for storing the cutting node k may be variable.
That is, a movable frame 32 made of a thin spring plate that can be elastically deformed is opposed to the U-shaped outer frame 31 so that the movable frame 32 is advanced and retracted by an actuator 33 such as a pneumatic cylinder. Thus, it is also possible to provide a pressing operation by the push rod 25 in a state where the shaving k inserted in the funnel 18 is pressed in the lateral direction.

  Reference numeral 35 denotes a lower funnel installed in the packing / pushing-in process (d) of the article to be packaged. The lower funnel 35 is provided so that the lower end opening is inserted into the bag mouth b of the packaging bag a that stops in the filling / pushing step (d) and escapes from the bag mouth b after the shaving k is filled.

Next, the packaging operation by the “compression filling packaging method” of the present invention will be described together with the operation of the gas filling type packaging machine P.
(1) In the bag feeding process (A) of the packaging machine P, the bag feeding device 10 supplies the packaging bag a to the grip pair g. In the printing step (b), a printing date such as the expiration date is printed on the back side of the packaging bag a by a known printing device 40.
(2) In the opening / printing confirmation step (c), the front and rear surfaces of the packaging bag a are sucked by the suction cups 46, 46 by the known opening means 45, and the bag mouth b is opened.
(3) On the other hand, on the compression filling machine 15 side, the cutting node k introduced into the funnel 18 from the measuring means is pressed from above by the push rod 25 to reduce the bulk (steps a to e).
(4) In the filling / pushing-in process (d) of the article to be packaged, the dropping port of the lower funnel 35 is inserted into the bag port b of the packaging bag a. At almost the same time, the small knot k in the funnel 18 of the compression filling machine 15 is pushed by the push rod 25 and filled into the packaging bag a.
(5) Next, the packaging bag a is intermittently transferred to the second pushing step (e) by the intermittent rotation of the rotating body 3. Accordingly, the shaving k is pressed by the push bar 51 of the push-in means 50 to further reduce the bulk, and at the same time, the compressed air blown from a small hole (not shown) provided in the push bar 51 causes the bag mouth b to The shaving k attached to the inner surface is blown away.
(6) In the temporary sealing step (f), the gas filling nozzle 8 is inserted into the packaging bag a and filling of the inert gas is started. At the same time, a temporary seal is applied to the bag mouth b in a state where the periphery of the nozzle 8 is kept in a straight line tension by the sealing bars 56, 56 of the temporary seal means 55.
(7) In the gas replacement / brushing process (G) to (W), while the packaging bag a is moving, gas is generated by shaking the packaging bag a by the vibration means 60 while injecting an inert gas from the gas filling nozzle 8. The replacement is promoted and the cut k is observed.
(8) In the top sealing step (f), the gas filling nozzle 8 is escaped from the packaging bag a and the upper portion of the packaging bag a is pressed by the pressing means 65 to expel the air in the bag. The bag mouth b is sealed by the sealing bars 71, 71.
(9) In the cooling step (ii) of the seal portion, the heat cooling portion applied in the previous step is cooled by the seal cooling means 75.
(10) In the step (t) of detecting the biting of the article to be packaged into the seal portion, the detecting means 80 detects whether or not the article to be packaged is biting into the seal portion of the packaging bag a.
(11) Next, in the product discharge step (t), the packaging bag a is released to the outside by the release operation of the grip pair g.

  As described above, this compression filling packaging method compresses the cut k and fills the packaging bag in a small volume and performs gas replacement, thereby replacing 20 bags per minute by 30 bags per minute. The packaging capacity can be increased to the extent. As a result, it is most suitable for packaging of shaving nodes and the like that are light and easy to rise.

Side view of a gas filling type packaging machine to which the compression filling packaging method of the present invention is applied Same as above, top view Process explanatory diagram of packaging machine Process explanatory diagram of compression filling machine Schematic diagram for explaining a method of compressing a packaged article in a horizontal direction in a compression filling machine

Explanation of symbols

P ... Rotary type packaging machine g ... Grip pair a ... Packaging bag b ... Bag mouth k ... Shaving node (package)
DESCRIPTION OF SYMBOLS 3 ... Rotating body 8 ... Gas filling nozzle 15 ... Compression filling machine 25 ... Push rod 18 ... Funnel 35 ... Lower funnel 50 ... Pushing means 51 ... Push rod 55 ... Temporary sealing means 60 ... Vibration means 70 ... Sealing means

Claims (4)

A rotating body provided with a large number of grip pairs in the radial direction is intermittently stopped and moved by intermittent driving means for each of a plurality of processes, and a predetermined amount of compressible covering is applied to a packaging bag supported in a suspended manner by each grip pair. In a rotary packaging machine that fills a package and fills an inert gas with a gas filling nozzle to seal the bag mouth,
A rotating plate that rotates intermittently in synchronism with the rotating body, a plurality of funnels arranged on the rotating plate at equal angular intervals from the center of rotation, and the bottom surface of each funnel is always closed to be packaged in a packaging bag Provided with a compression filling machine comprising a shutter that opens the bottom surface when an object is charged, and a push bar that is movable in the vertical direction to press the articles to be packaged that are respectively loaded into each funnel from the weighing means. A lower funnel is provided that inserts a drop port at the lower end into the bag mouth of the packaging bag to be stopped in the process and allows the bag to escape from the bag mouth after filling the packaged goods.
In the compression filling machine, the packaged material put in the funnel is pressed from above with the push rod to reduce the bulk,
In the filling process of the packaging machine, the dropping bag of the lower funnel is inserted into the bag mouth of the opened packaging bag, and at the same time, the small packaged object in the funnel is pushed in by the push rod. Filling in,
In the temporary sealing step, the gas filling nozzle is inserted into the packaging bag and a temporary sealing of the bag mouth is performed by leaving the periphery of the nozzle by the temporary sealing means,
Next, while the packaging bag is moving several steps, the gas replacement nozzle is accelerated by shaking the packaging bag while spouting the inert gas from the gas filling nozzle, and the object to be packaged is frustrated,
In the top sealing step, the gas filling nozzle is allowed to escape from the packaging bag and the upper portion of the packaging bag is pressed by the pressing means to expel the air in the bag, and the bag mouth is sealed by the sealing means,
In the subsequent post-process, the sealing portion applied in the pre-process is cooled, and then the gripping state by the grip pair is released to release the packaging bag to the outside of the machine. .   2. The gas replacement is performed by blowing an inert gas from a gas nozzle provided on the push rod when compressing the article to be packed into a small bulk in the compression filling machine. The compression filling packaging method according to 1.   The bulk of the package is reduced by performing a pressing operation with the push rod in a state where the package to be packaged in the funnel is pressed in the lateral direction. Compression filling packaging method. Pressure that is provided in the step immediately after the filling step, presses the article to be packaged in the packaging bag with the pressing bar of the pressing unit to further reduce the bulk, and is ejected from a small hole provided in the pressing rod 4. The compression filling packaging method according to any one of claims 1 to 3, wherein an object to be packaged attached to the inner surface of the bag mouth is blown off by air.

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