JP2023061542A - Bag filling and packaging device and bag filling and packaging method - Google Patents

Abstract

To solve the problem that with a conventional bag filling and packaging device which includes a rotary filling and packaging machine having a first filling machine for high-speed filling of to-be-packaged objects and a second filling machine for subsequent low-speed filling, and has an auto-checker that is placed on the downstream of the filling machine and checks the weight of filled bags, errors in the actual filling volume by the auto-checker are inaccurate, for example the errors cannot be directly corrected in the second filling machine, and the cost is increased if a separate weighing device is installed to weigh the bags filled by the second filling machine.SOLUTION: A bag filling and packaging device of the present invention includes a rotary filling and packaging machine having a first filling machine 16, a weighing device 17 for weighing the bags after filling, a second filling machine 19 for further filling the bags after weighing. In the bag filling and packaging method, the bags filled by the second filling machine 19 are re-conveyed on a conveying path without being discharged from the conveying path of the rotary filling and packaging machine, weighed by the weighing device 17 of the rotary filling and packaging machine, and based on the weighing value, the filling state of the second filling machine 19 is corrected.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-filling packaging apparatus and a bag-filling packaging method for continuously filling and packaging objects to be packaged.

2. Description of the Related Art A bag-filling packaging apparatus and a bag-filling packaging method for continuously filling a bag with a predetermined weight of an object to be packed, such as a granular material, and packaging the same are already widely known. In addition, in such a bag-filling packaging apparatus and a bag-filling packaging method, it is well known that an auger-type filling machine is used as a type of filling machine for filling the object to be packaged. This auger-type filling machine fills a bag with a target weight of packaged material by pulse-controlling the output torque and rotation speed (number of rotations) of a servomotor that rotates an auger (auger screw). In order to carry out highly accurate filling, there is known a bagging and packaging machine in which two large and small auger-type filling machines and a weighing device between the two auger-type filling machines are arranged. , this bag-filling packaging apparatus is feedback-controlled in order to accurately fill the packaging items.

For example, Patent Document 1 discloses a first filling machine 51 that roughly fills a bag 50 with a large volume of items to be packaged and a second filling machine that performs corrective filling of a small amount of items to be packaged, as shown schematically in FIG. 2 filling machines 52 are provided, and a weighing device (only the bag gripping portion of the weighing device is simply shown) 53 is provided between these filling machines 51 and 52. is disclosed. After the first filling machine 51 roughly fills the bag 50 with the items to be packaged at high speed, the bag is weighed by the weighing device 53, and the weight obtained by subtracting the weighed value of the weighing device 53 from the final target filling amount. The second filling machine 52 corrects and fills the bag 50 with the items to be packaged (computational filling). In the bag-filling packaging apparatus of Patent Document 1, in the weighing-dedicated section, it is possible to concentrate on weighing the bag 50 after being roughly filled by the weighing device 53, so compared to the case of filling while weighing, which will be described later. , has the advantage of being able to speed up.

By the way, when auger filling is performed by pulse control, if the packaging and filling work is continuously performed for a long time, the bulk specific gravity (mass/volume) of the packaged material may fluctuate due to changes in the humidity of the air, etc. Based on the measured value of the weighing device 53, the fluctuation tendency of the filling amount is judged, and the rotation speed of the servomotor of the first filling machine 51 is feedback-controlled so that the filling amount of the items to be packaged is accurate.

Furthermore, in Patent Document 1, in order to measure the weight of the product after the packaging work is completed, an auto-checker (not shown in FIG. 4) is installed at the rear stage of the rotary packaging machine. It becomes possible to correct the variation of the specific gravity. In this case, the weight of the bagged product is measured by the auto checker, the correction amount for the corrected filling amount is calculated based on the measurement data of each several times by the auto checker, and the trend pulse number corresponding to the correction amount is calculated. Feedback control is performed on the controller of the second filling machine 52, and the filling from the next time is corrected and the changed amount is repeatedly controlled.

In Patent Document 1, feedback control is performed on the control unit of the second filling machine 52 based on the measurement of the auto checker. There are rotary packaging machines in which a second weighing device 55 is arranged. That is, as schematically shown in FIG. 5, a second weighing device 55 is arranged in a post-process of computational filling by a second filling machine 52 (a drip nozzle in Patent Document 2) of a rotary packaging machine. Then, the second weighing device 55 measures the bag 50 filled with the items to be packaged, and feedback-controls the control unit of the second filling machine 52 based on the weighed value. That is, as described above, when the packaging and filling work is performed over a long period of time, the bulk specific gravity may fluctuate. The fluctuation tendency of the amount is judged, and the second filling machine 52 is feedback-controlled based on this fluctuation tendency to fill the correct filling amount.

FIG. 6 shows a simplified diagram of another bag-filling packaging apparatus that is not affected by fluctuations in bulk specific gravity, unlike the patent documents 1 and 2 described above. Patent Document 3 discloses a weighing, filling and packaging method and apparatus configured as described above. In the bag-filling packaging apparatus of FIG. 6, after the first filling machine 51 is used to fill the items to be packaged, the second filling machine 52 fills the material while holding and weighing the material using the weighing device 56 (only the bag gripping portion is shown). method (weigh filling). That is, filling is performed while controlling the rotation of the auger of the second filling machine 52 based on the weighed value from the weighing device 56 .

According to the bag-filling packaging apparatus of FIG. 6, since filling is performed while weighing, even if the bulk specific gravity fluctuates, the object to be packaged can be accurately filled without being affected by the fluctuation of the bulk specific gravity. Moreover, since it is not the arithmetic filling as shown in FIGS. 4 and 5, when the end of the filling operation is approaching, even after the first filling machine 51 has been filled with all the items to be packaged, the second filling machine 52 alone is used for filling. can be continued, it is possible to fill the first and second filling machines 51 and 52 to the end without leaving any unpacked items.

Furthermore, as a modification combining the above FIGS. 4 and 6, as shown in FIG. 7, after filling with a first filling machine 51, weighing with a weighing device (first weighing device) 53 and control device etc. and then filling while weighing by the weighing device 56 (second weighing device: only the bag gripper is shown) (calculated filling + weighing filling). The bag-filling and packaging apparatus of FIG. 7 also has the same advantages as the bag-filling and packaging apparatus of FIG.

JP 2008-239190 A Utility Model Registration No. 3181414 JP-A-11-314602

As described above, in the conventional bag filling and packaging apparatus disclosed in FIG. Since the filling machine 52 is feedback controlled, it is not possible to directly correct the error in the actual filling amount by the auto-checker to the second filling machine 52 and control it, resulting in a plurality of underfilled products. There is a problem.

As a method for coping with this, in FIG. You can avoid the product coming out. However, in the case of the rotary filling and packaging machine of FIG. 5, the rotary filling and packaging machine requires two weighing devices 53 and 55, which has the drawback of increasing the manufacturing cost of the device.

Furthermore, at the end of the filling operation, in the conventional rotary type filling and packaging machine as shown in FIGS. After the stop, the hopper of the first filling machine 51 is emptied first because a large amount of the articles to be packaged are discharged from the hopper of the first filling machine 51 . Conversely, since a large amount of powdery material remains in the hopper of the second filling machine 52, there is a problem that the burden of cleaning up the remaining packaged materials is heavy for workers. there were.

On the other hand, in the rotary filling and packaging machine shown in FIGS. In addition, the hopper of the second filling machine 52 does not contain a large amount of powdery or grainy material to be packaged. However, in the rotary filling and packaging machine shown in FIGS. 6 and 7, since the weight is weighed while the second filling machine 52 is filling, the weight is weighed while being shaken by the falling packaged items, and the weighing speed cannot be increased. In addition, there is a problem that it is difficult to pursue measurement accuracy. Furthermore, the rotary filling and packaging machine shown in FIG. 7 requires two weighing devices 53 and 56, which poses a problem of increasing the cost of the device and is not practical.

In view of such problems, an object of the present invention is to provide a bag-filling packaging apparatus and a bag-filling packaging method capable of improving filling accuracy while suppressing an increase in manufacturing cost.

The bag-filling and packaging apparatus of the present invention is a bag-filling and packaging apparatus comprising a filling and packaging machine that continuously fills bags with a predetermined weight of items to be packaged and packages them, and a control device,
The filling and packaging machine includes a conveying device that moves and conveys the bag along the conveying path, a first filling machine that fills the conveyed bag with the object to be packaged, and a A weighing device that is arranged downstream and weighs the bag filled by the first filling machine, and a weighing device that is arranged downstream of the weighing device in the conveying path and fills the bag filled by the first filling machine. a second filling machine that fills the package with a weight obtained by subtracting the weighing value of the weighing device from the target value;
The control device conveys the bag filled by the second filling machine to the conveying path again without discharging it from the conveying path of the filling and packaging machine, weighs it with the weighing device of the filling and packaging machine, and measures the measured value is characterized by having a re-weighing correction function for judging and correcting the filling state of the second filling machine based on the above.

In addition, the bag stuffing packaging method of the present invention includes a filling section in which the bag is conveyed along the conveying path, and the first filling machine fills the bag with the material to be packaged; a weighing section in which the filled bag is weighed; A filling section that fills the bags filled by the first filling machine with a weight obtained by subtracting the weighing value of the weighing device from the target filling value by the second filling machine. A bagging and packaging method for filling and packaging an object to be packaged in a bag by a predetermined weight,
The bag filled by the second filling machine is conveyed through the conveying path again without being discharged from the conveying path of the filling and packaging machine, weighed by the weighing device of the filling and packaging machine, and based on this measured value, the second 2, a re-weighing correction is performed to correct the filling state of the filling machine.

According to the bag-filling packaging apparatus and the bag-filling packaging method of the present invention, the weight filled by the second filling machine can be weighed without increasing the number of weighing devices from one to two in the filling packaging machine. By correcting the filling state of the second filling machine based on the measured value, the effect of fluctuations in bulk specific gravity can be minimized, and the filling accuracy of the bagging packaging device and the bagging packaging method can be improved. can be improved.

1 is a plan view schematically showing a bag stuffing and packaging apparatus of the present invention; FIG. The figure which shows simply the bag stuffing packaging method of this invention. A diagram schematically showing another bagging and packaging method of the present invention. A diagram simply showing a conventional bagging packaging method A diagram schematically showing another conventional bagging packaging method A simplified diagram of another conventional bagging and packaging method A diagram simply showing another conventional bagging packaging method

As shown schematically in FIGS. 1 and 2, the bag-filling packaging apparatus according to the embodiment of the present invention continuously fills a bag 5 with a predetermined amount of an object to be packaged, such as powder or granular material, and packages it. A rotary filling and packaging machine 1 and an auto checker (weight inspection) arranged downstream of the rotary filling and packaging machine 1 to measure the weight of the bag 5 filled and packaged by the rotary filling and packaging machine 1 2, an unloading conveyor 3 for unloading (carrying out direction Q) the bag 5 filled and packaged by the rotary filling and packaging machine 1 to the side of the auto checker 2, and the bag including the rotary filling and packaging machine 1. and a control device (not shown) for controlling each component of the stuffing and packaging apparatus. The present invention is not limited to the rotary type filling and packaging machine 1, and may be a circulating packaging machine, for example, an elliptical packaging machine.

In the rotary type filling and packaging machine 1 , eight pairs of clamp arms each having a pair of clamp arms having clamps attached to the tips for clamping both side edges of the bag 5 are pivotally supported on the periphery of a circular rotor 11 . The driving force of the drive motor arranged below the circular rotor 11 is transmitted to the circular rotor 11, so that the circular rotor 11 intermittently rotates clockwise (rotational direction R) at a pitch of 45°.

Each section of the circular rotor 11 includes a bag supply section (1) for supplying empty bags 5 from the bag box 13 by the bag supply device 12, a printing operation for printing the expiration date and the like on the bags 5, and a bag of the bags 5. and a large-capacity hopper 15 to fill the bag 5 at a high speed (at a higher speed than the second filling machine 19, which will be described later). A first filling section (3) for roughly filling the items to be packaged by means of a filling machine 16, and a weighing device 17 disposed downstream of the first filling section (3) to switch the filled bags 5. a weighing section (4) for weighing the bags 5 filled by the first filling machine 16, and a small-capacity hopper 18 located downstream of the weighing section (4) for slow-moving small-volume packages. a second filling section (5) that fills with high precision, a degassing section (6) that degasses the air in the bag 5 with a deaerator 20, and a sealing section that seals the opening of the bag 5 with a sealing device 21 (7) and a cooling discharge section (8) that cools the sealed portion of the bag 5 by the seal cooling device 22 and discharges the wrapped bag 5 from the conveying path of the circular rotor 11 to the discharge conveyor 3 side. there is Then, in these sections (1) to (8), the filling operation and packaging operation are performed in order.

A brief description of the basic filling and packaging operations performed in these sections (1)-(8) is provided.
First, the bag supply device 12 arranged corresponding to the bag supply section ( 1 ) supplies the clamp arm of the circular rotor 11 with empty bags 5 stacked in the bag box 13 . That is, one bag at a time is sucked from the top of a large number of bags 5 stacked in the bag box 13 and supplied to the clamp arm of the bag supply section (1). are held and the bag 5 is suspended. Also, in the printing operation performed in the bag opening section (2), the printing device 14 prints, for example, the best-before date, manufacturing date, etc. on the surface of the bag 5 at appropriate locations. The front and rear surfaces of the bag 5 are sucked to open the bag mouth, and four metal wires called spatulas are used to hold the bag mouth open. The bag supply device 12, the bag box 13, the printer 14, the degassing device 20, the sealing device 21, the seal cooling device 22, etc. are already known devices.

In the first filling section (3), a first filling machine 16 comprising a filling auger equipped with a pulse-controlled servomotor, a large-capacity hopper 15 and the like is arranged. The auger of the first filling machine 16 has a large diameter and is capable of filling a large amount of material to be packaged at high speed, and roughly filling the bag 5 with the material to be packaged such as granules in a smaller amount than the target filling amount. (first filling step). On the other hand, the auger of the second filling machine 19 in the subsequent second filling section (5) has a small diameter and adds and fills the objects to be packaged at a relatively low speed with high accuracy.

A weighing device 17, such as a load cell, is arranged in the weighing section (4). The weighing device 17 transfers the bag 5 filled with the items to be packaged in the first filling section (3) to the bag gripper of the weighing device 17, measures the weight of the bag 5, and outputs the weighed value to the control device. (weighing process). The control device subtracts the weighed value of the weighing device 17 from the target filling value of the item to be packaged to calculate the additional filling amount (calculated filling amount) in the second filling section (5). Since the bulk specific gravity (mass/volume) may fluctuate when the packaging and filling work is carried out over a long period of time, the fluctuation trend of the filling amount is determined based on the measured value by the weighing device 17, and this fluctuation Based on the tendency, the first and second filling machines 16, 19 for large-volume supply and small-volume supply are feedback-controlled so that the correct filling amount is filled.

In the second filling section (5), a second filling machine 19 having a small-capacity hopper 18 is arranged for filling small-capacity articles at low speed with high accuracy. In the second filling section (5), as described above, the fuel is filled by the calculated filling amount obtained by subtracting the weighed value of the weighing device 17 from the target filling value (second filling step). The second filling machine 19 also has a filling auger equipped with a pulse-controlled servomotor.

The second filling machine 19 is configured to be placed in the second filling section (5) and perform filling at the start of filling work or during filling work. At the end, the second filling machine 19 can be moved to the weighing section (4) so that it can be filled by the second filling machine 19 while being weighed by the weighing device 17 (the operation at this time will be described later). do). In this embodiment, a rotating shaft 19a that supports the second filling machine 19 is arranged on the outer peripheral side of an intermediate portion between the weighing section (4) and the second filling section (5), and rotates around the rotating shaft 19a. The support arm 19b supporting the second filling machine 19 can be rotated (direction of rotation T) to move the auger of the second filling machine 19 to a position above the weighing device 17 in the weighing section (4).

After the bag 5 is filled with the items to be packaged by the second filling machine 19, the air in the bag 5 is removed by the degassing device 20 in the degassing section (6), and the sealing device 21 is removed in the sealing section (7). The bag opening of the bag 5 is sealed by . In the cooling and carrying out section (8), first, the sealed portion of the bag 5 is cooled by the seal cooling device 22, after which the pinching operation by the clamp is released, and the packaged product is transferred from the conveying path of the circular rotor 11 onto the carrying out conveyor 3. and transported to an auto checker (weight inspection device) 2.

An auto checker (weight inspection device) 2 measures and inspects the weight of the packed bag 5, and if the filled and packed bag 5 is within a preset filling amount range, it is shipped as a non-defective product. On the other hand, if it is out of the filling amount range, it is recognized as a defective product and processed as a defective product.

In the bag-filling packaging apparatus and bag-filling packaging method of the present invention, as shown in FIG. The servo motors of 16 and second filling machine 19 are pulse controlled. Further, the control device corrects the pulse number of the servo motor of the first filling machine 16 based on the weighed value measured by the weighing device 17 immediately after filling. A feature of the present invention is that the bag 5 that has been arithmetically filled by the second filling machine 19 is recirculated to the conveying path of the rotary filling and packaging machine 1 without being discharged from the conveying path of the rotary filling and packaging machine 1. is weighed by the weighing device 17, the filling state of the second filling machine 19 is determined based on this weighed value, and a re-weighing correction operation is performed to correct the pulse number. A function for performing such a re-weighing correction operation is called a re-weighing correction function.

At the start of the filling work (at startup), the start-up correction mode including the reweighing correction operation is performed, and after that, the normal filling work is continued for a predetermined time or the filling work is performed for a predetermined amount. Then, a work correction mode including a reweighing correction operation is executed, and a work end mode is executed when the filling work is finished. However, the present invention is not limited to this, and instead, a work start correction mode, a work correction mode, and a work end mode are selectably implemented (control contents of each mode can be executed by operation buttons or an operation panel). , the operator may execute a work start correction mode, a work correction mode, and a work end mode, respectively. These modes are described below.

[Start of work correction mode]
The controller controls the pulse values of the servomotors of the augers of the first and second filling machines 16 and 19 in order to optimize the filling amount of the items to be packaged at the start of work (when the bag filling and packaging machine is started up). do. As a control method, first, before the operation of the normal filling work, based on the previous filling data, using the test bag 5, the first filling process by the first filling machine 16, the weighing device 17 The weighing process and the second filling process by the second filling machine 19 are performed several times (for example, about 3 to 5 bags) on a trial basis. Then, the values measured by the weighing device 17 in the weighing process are averaged, and using this average value, the pulse value of the first filling machine 16 is corrected by the error and updated.

As shown in FIG. 2, the conveying path of the rotary filling and packaging machine 1 is recirculated without discharging the filled bags 5 from the conveying path of the rotary type filling and packaging machine 1 in the cooling out section (8). That is, each section (bag supply section (1), bag opening section (2), first filling operation) is performed without performing the bag supply operation, the printing operation, the bag mouth opening operation, and the first filling operation. Pass through section (3)). On the other hand, in the weighing section (4), the second weighing is performed by the weighing device 17, and the measured value is used to correct the pulse value of the second filling machine 19 (execution of re-weighing correction operation at the start of work). With this correction, errors due to variations in bulk specific gravity for the second filling machine 19 can be corrected.

[Work Compensation Mode]
During the filling and packaging operation, as a rule, basic filling operations are carried out. That is, feedback control to the first filling machine 16 is performed by the weighing operation of the weighing device 17, and in the second filling machine 19, only the weight obtained by subtracting the weighed value of the weighing device 17 from the filling target value Only arithmetic padding is done.

If a predetermined condition is satisfied during this work, the control device executes a reweighing correction operation as shown in FIG. As a condition for executing the reweighing correction operation, after performing filling by the rotary filling and packaging machine 1 a predetermined number of times (for example, thousands or tens of thousands of times), or after performing filling for a predetermined time (for example, several hours). set to be executed after When this condition is satisfied, the weighing re-correction operation is automatically performed in the same manner as in the start-of-work correction mode. That is, when the above implementation conditions are satisfied, after performing the first filling operation, weighing operation, and second filling operation for a predetermined number (for example, about 3 to 5 bags), the pulse value of the first filling machine 16 is is corrected by the error and updated. Furthermore, without discharging the bag 5 from the conveying path of the rotary filling and packaging machine 1, the conveying path is recirculated. At that time, the filled bag 5 is weighed for the second time by the weighing device 17 in the weighing section (4) without performing the bag supply operation, the printing operation, the bag mouth opening operation, and the first filling operation. value to correct the pulse value of the second filling machine 19 (re-weighing correction operation during filling operation). As a result, it is possible to correct errors due to variations in bulk specific gravity not only in the first filling machine 16 but also in the second filling machine 19, thereby improving the filling accuracy.

[Auto checker work correction mode]
During the filling operation, as a condition for executing the reweighing correction function, as described above, instead of the number of times of filling and filling time, as briefly shown in FIG. Only when the filled weight tends to fluctuate due to the auto-checker 2 that is present, the re-weighing correction operation may be performed (re-weighing correction operation by the auto-checker during filling work). In other words, when the work environment such as temperature and humidity does not change significantly, there is not much change in the bulk specific gravity during work, so there is often no need to perform reweighing correction operation. Therefore, this operation may be performed only when there is a tendency for the filling amount to fluctuate and it is necessary to perform the re-weighing correction operation. If the charge does not tend to fluctuate, a signal to stop recirculation is signaled. It should be noted that the operation unit may be configured to be manually set from a panel for executing or stopping this weighing re-correction operation.

[End of work mode]
4 and 5 above, when the filling operation is completed, after stopping the supply of the granular material to the hoppers of the first and second filling machines 16 and 19, the first The hopper of the first filling machine 16 is emptied first, and conversely, a large amount of powdery material remains in the hopper of the second filling machine 19 . Therefore, the second filling machine 19 is configured to be movable between the position of the second filling section (5) and the position of the weighing section (4) weighed by the weighing device 17, and the first filling machine While the powder remains in the hopper 16, the second filling machine 19 is arranged in the weighing section (4), and the filling operation is continued until the hopper of the first filling machine 16 is empty. do.

When the hopper of the first filling machine 16 is emptied, the second filling machine 19 is moved to the weighing section (4) by a command signal from the control device, and while being weighed by the weighing device 17, the second filling machine 19 Fill the package. By this method, the residual powder in the second filling machine 19 at the end can be reduced to a minimum. As described above, it is preferable to install and control the rotation drive motor so that the support arm 19b of the second filling machine 19 automatically rotates when switching to the work completion mode. Instead of rotating the support arm 19b, the support arm 19b may be temporarily stopped and manually rotated.

In the above embodiment, the second filling machine 19 is moved from the second filling section (5) to the weighing section (4) only when the end of the work is approaching. Therefore, when the amount of the items to be packaged is small, the first filling machine 16 is not used, and the second filling machine 19 is used while weighing the weighing device 17 in the weighing section (4). good too.

INDUSTRIAL APPLICABILITY The present invention is useful in various bag-filling packaging apparatuses and bag-filling packaging methods that have filling and packaging machines and continuously fill and package objects to be packaged.

1 Rotary type filling and packaging machine 2 Auto checker (weight inspection device)
3 unloading conveyor 5 bag 11 circular rotor (conveying device)
12 Bag supply device 14 Printing device 15 Large capacity hopper 16 First filling machine 17 Weighing device 18 Small capacity hopper 19 Second filling machine 20 Degassing device 21 Sealing device 22 Seal cooling device

Claims (11)

A bag stuffing and packaging machine comprising: a filling and packaging machine for continuously filling and packaging a bag with a predetermined weight of an object to be packaged; and a control device,
The filling and packaging machine includes a conveying device that moves and conveys the bag along the conveying path, a first filling machine that fills the conveyed bag with the object to be packaged, and a A weighing device that is arranged downstream and weighs the bag filled by the first filling machine, and a weighing device that is arranged downstream of the weighing device in the conveying path and fills the bag filled by the first filling machine. a second filling machine that fills the package with a weight obtained by subtracting the weighing value of the weighing device from the target value;
The control device conveys the bag filled by the second filling machine to the conveying path again without discharging it from the conveying path of the filling and packaging machine, weighs it with the weighing device of the filling and packaging machine, and measures the measured value A bag stuffing and packaging apparatus characterized by having a reweighing correction function for judging and correcting the filling state of the second filling machine based on. When executing the reweighing correction function, the control device conveys the bag filled by the second filling machine along the conveying path without being sealed by the sealing device, and the bag feeding operation by the bag feeding device and the 2. The bag-filling packaging apparatus according to claim 1, wherein the filled bag is passed through the conveying path without being filled by the first filling machine, and is controlled to be weighed by the weighing device. The control device has a start-up correction mode in which the re-weighing correction function is performed at the start of filling work and a work correction mode in which the re-weighing correction function is performed when a predetermined condition is satisfied during filling work, or either mode is selected. 3. The bag-filling packaging apparatus according to claim 1, wherein the bag-filling packaging apparatus comprises: a second filling machine movably disposed between a second filling section that only fills and does not weigh and a weighing section that weighs with a weighing device;
The bag-filled packaging according to any one of claims 1 to 3, wherein in a state where the second filling machine is arranged in the weighing section, filling is performed by the second filling machine while weighing by the weighing device. Device. An auto-checker is installed to measure and inspect the filling weight of the bags discharged from the conveying path of the filling and packaging machine,
A claim characterized by having an auto-checker operation correction mode for judging the fluctuation tendency of the filling amount based on the measurement value of the auto-checker, and judging whether or not to carry out reweighing correction operation based on the judgment result. Item 5. The bag stuffing packaging device according to any one of Items 1 to 4. A bag is conveyed along a conveying path, and a filling section for filling the bag with the items to be packaged by the first filling machine, a weighing section for weighing the filled bag, and a bag filled by the first filling machine. and a filling section in which the second filling machine fills the weight obtained by subtracting the weighing value of the weighing device from the filling target value, and the filling and packaging machine continuously fills the bag with the object to be packaged by a predetermined weight. A bagging packaging method for filling and packaging,
The bag filled by the second filling machine is conveyed through the conveying path again without being discharged from the conveying path of the filling and packaging machine, weighed by the weighing device of the filling and packaging machine, and based on this measured value, the second 2. The bag stuffing packaging method characterized by performing re-weighing correction for correcting the filling state of the filling machine of 2. When performing re-weighing correction, the bag filled by the second filling machine is conveyed along the conveying path without being sealed by the sealing device, and the bag feeding operation by the bag feeding device and the first filling machine 7. The bagging and packaging method according to claim 6, wherein the filled bags are passed through the conveying path without performing a filling operation by means of a weighing section, and are weighed by a weighing device. 8. The bag stuffing and packaging method according to claim 6 or 7, wherein the reweighing correction operation is performed at the start of filling work, at filling work, or at any one of them. A second filling machine is movable between a second filling section that only fills and does not weigh and a weighing section that weighs with a weighing device;
The second filling machine according to any one of claims 6 to 8, characterized in that, in a state where the second filling machine is arranged in the weighing section, filling is performed by the second filling machine while measuring by the weighing device in the weighing section. bagging packaging method. An automatic checker is used to measure the filling weight of the bags discharged from the conveying path of the filling and packaging machine, and based on this measured value, the fluctuation trend of the filling amount is determined. The bag stuffing packaging method according to any one of claims 6 to 9, wherein it is determined whether or not. Having a large-capacity hopper and roughly filling the items to be packaged into bags at high speed by means of a first filling machine, having a small-capacity hopper disposed downstream from the first filling machine. 11. The bagging and packaging method according to any one of claims 6 to 10, characterized in that the second filling machine fills a small volume of articles to be packaged at a low speed with high accuracy.

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