JP5246871B2 - Vertical bag filling and packaging method - Google Patents

Description

  The present invention relates to a vertical bag making and filling method for making a bag with a square base and a gusset, and filling a bag into the bag, and a vertical bag making and filling machine for carrying out the method. .

  As a vertical bag making and filling machine for forming a packaging bag with a square bottom and a gusset, for example, there is one having a configuration disclosed in Patent Document 1. The square bottom gusset bag forming apparatus of Patent Document 1 includes a triangular folding guide (20) and a gusset vertical guide (24) as a configuration for forming a gusset on a film cylinder (FC). The triangular folding guide (20) and the gusset vertical guide (24) move in conjunction with the horizontal sealing operation of the pair of heater blocks (14) and (16) and enter the side of the film cylinder (FC). At the position where the heater blocks (14) and (16) are closed, the triangular folding guide (20) is folded so that the lower part of the gusset bag (GP) is a square bottom, and the gusset vertical guide (24) is the gusset bag (GP). As shown in FIG. 3 of the document 1, a packaging bag with a square bottom and a gusset is formed.

JP 2003-200908 A

Now, in the apparatus of Patent Document 1, when the film cylinder is sandwiched by the horizontal seal, the volume in the film cylinder decreases, and the gas (air, filling gas, etc.) contained inside escapes in the opening direction. Go. For this reason, when the granular material etc. with a comparatively light weight are filled as a to-be-packaged object, a granular material will soar easily to a horizontal seal position with this escape of gas. As a result, the heater block may be laterally sealed in a state where the soared granular material is bitten.
If the side particles are sealed in a state where the powder particles so swollen in this way, they cannot be sealed cleanly, resulting in quality deterioration such as causing gas leakage from the finished packaging bag.

Conventionally, when making a packaging bag without a gusset or square bottom (pillow type packaging bag), a blocking member or the like is moved forward with the movement of the horizontal sealer below (or above) the horizontal sealing position, The soaring up to the horizontal seal position was blocked. However, when forming a packaging bag with a square bottom and a gusset, if a blocking member or the like is advanced in the vicinity of the lateral seal position, the folding of the packaging film by the triangular folding guide or the gusset vertical guide is obstructed.
For this reason, when forming a packaging bag with a square bottom and a gusset, without using a blocking member, suppress the filling amount of the packaging material into the packaging bag, and create a certain space above the filled packaging material. The package was not allowed to rise to the horizontal seal position. However, when such a space is created in the packaging bag, the use of extra packaging film increases the manufacturing cost, or the packaged item (for example, coffee) that easily oxidizes due to the remaining air in the packaging bag. Bean) has been reduced.

The present invention has been made in view of such a situation, and in a bag making of a packaging bag with a square bottom and a gusset, the biting of an article to be packaged when the packaging film is laterally sealed is beautiful. The first object of the present invention is to provide a vertical bag-filling and packaging method that can be sealed.
A second object of the present invention is to provide a vertical bag making filling and packaging machine for carrying out this vertical bag making filling and packaging method.

In order to achieve the above-mentioned object, the present invention includes a horizontal sealing step in which a cylindrically formed packaging film is sandwiched between a pair of horizontal sealing blocks and laterally sealed,
A corner that forms a square bottom by inserting a pair of triangular folding guides directly into a portion of the packaging film that is to be laterally sealed, and that forms a gusset by inserting a pair of vertical folding guides into the lower portion of the laterally sealed portion. In a vertical bag making filling packaging method including a bottom gusset forming step,
The horizontal sealing step includes an intermediate moving step of moving the pair of horizontal seal blocks in the closing direction to an intermediate moving position having an interval between them, a stopping step of temporarily stopping the pair of horizontal seal blocks at the intermediate moving position, After the stopping step, the horizontal seal completion step of further moving the pair of horizontal seal blocks in the closing direction to sandwich the packaging film and laterally seal,
In the intermediate movement position, the pair of lateral seal blocks are brought close to each other up to an interval at which a square bottom can be formed on the packaging film by the pair of triangular folding guides,
The square bottom gusset forming step is characterized in that it is performed between the intermediate movement step and the horizontal seal completion step.

  According to this method, in the transverse sealing step of transversely sealing the packaging film, the pair of transverse sealing blocks perform a stopping step of temporarily stopping at an intermediate movement position where a square bottom can be formed on the packaging film by the pair of triangular folding guides. Even if an article to be packaged in the packaging film soars, it can be dropped during this stop, and a square bottom can be formed in the packaging bag. As a result, even after a stop process, even if a pair of horizontal seal blocks pinch the packaging film, it can be sealed cleanly without biting the packaged items that have risen, and high quality packaging bags that do not leak gas are stable. Can be manufactured.

In addition, since it is not necessary to use a blocking member or the like for preventing the packaged item from rising, the manufacturing cost of the packaging machine for performing the vertical bag making filling and packaging method can be reduced.
Furthermore, since it is not necessary to make a space above the article to be packaged in the packaging film, the article to be packaged can be filled up to the vicinity of the part to be laterally sealed. Therefore, resource saving can be realized by reducing the number of packaging films used in the packaging bag, and the length of the object to be packaged can be increased by reducing the air in the packaging film.

  Further, the gusset square bottom forming step can be configured to be performed between the intermediate moving step and the stopping step. By performing the gusset square bottom forming process between the intermediate movement process and the stopping process in this way, when the pair of horizontal seal blocks performs the horizontal seal completion process, a triangular folding guide or a vertical folding guide is provided on the packaging film. No need to plug in. Therefore, the guide can be sealed more neatly without causing the guide film to damage the packaging film by applying an extra load to the packaging film to be laterally sealed.

Here, as the vertical bag making filling and packaging machine for carrying out the above-described vertical bag making filling packaging method,
A pair of transverse seal blocks, a pair of triangular folding guides, a pair of vertical folding guides,
Main drive means for driving a pair of transverse seal blocks;
A pair of triangular folding guides and a pair of vertical folding guides that integrally drive guide driving means,
Furthermore, it can be set as the structure provided with the control means which implements a horizontal sealing process and a square bottom gusset formation process in response to a main drive means and a guide drive means.

  As described above, in the vertical bag making and packaging machine, the driving of the pair of horizontal seal blocks in the horizontal sealing process and the driving of the triangular folding guide and the vertical folding guide in the square bottom gusset forming process can be interlocked by the control means. Accordingly, when the pair of horizontal seal blocks perform the stopping process at the intermediate movement position, the triangular folding guide and the vertical folding guide are also stopped, and the square bottom and the gusset can be easily formed on the packaging film. Furthermore, after the formation, for example, before the horizontal sealing completion step, the guide driving means is driven to retract each guide, so that each guide does not exist when the packaging film is laterally sealed, and the pair of horizontal sealing blocks Smooth horizontal sealing.

  The control means includes setting input means for setting an intermediate movement position of the pair of horizontal seal blocks, and drives the main drive means in the intermediate movement process to place the pair of horizontal seal blocks at the set intermediate movement position. be able to.

  According to such a configuration, the intermediate movement position of the pair of horizontal seal blocks is freely set by the setting input means. For this reason, a pair of horizontal seal blocks can be stopped at an appropriate position according to the type and amount of the package to be filled in the packaging film, the stop time, etc. Can be dropped.

  As described above, according to the present invention, the pair of horizontal seal blocks perform the stop process in which the gap is temporarily stopped at the intermediate movement position where an arbitrary interval is opened. As a result, it is possible to suppress biting of the article to be packaged in the horizontal seal, and as a result, it is possible to stably manufacture a high-quality packaging bag.

It is a perspective view which shows roughly the whole structure of the vertical bag making filling packaging machine which concerns on this embodiment. It is a top view which shows the main drive device and guide drive device of the vertical bag making filling packaging machine which concerns on this embodiment. FIG. 3 is a side view of the main drive device and the guide drive device of FIG. 2. It is a block diagram of the control system of the vertical bag making filling packaging machine concerning this embodiment. It is the schematic which shows the flow of the horizontal seal in the vertical bag making filling packaging machine concerning this embodiment in order, (a) (c) (e) (g) is a side view, (b) (d) (f) ( h) is a ZZ line view of each of (a), (c), (e), and (g).

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view schematically showing an overall configuration of a vertical bag making filling and packaging machine according to the present embodiment.
In the present embodiment, the above-described vertical bag making filling and packaging method is carried out by a vertical bag making filling and packaging machine. As shown in FIG. 1, this vertical bag making and filling machine includes a reel 1, a former 2, a bag making tube 3, a feeding belt 4, a vertical sealer 5, and a horizontal sealer 6 (first heater block 6a and second heater block 6b. ). The belt-shaped packaging film F is drawn out from the reel 1, and then is made into a cylindrical shape while passing through the former 2, the bag making tube 3, and the vertical sealer 5, and is drawn out below the bag making tube 3 by the feeding belt 4. . The cylindrical packaging film F is formed into a rectangular tube shape by passing through the lower end of the bag-making tube 3 formed into a rectangular tube shape in this drawing.

  Further, a horizontal sealer 6 is provided below the bag making tube 3. The horizontal sealer 6 includes a first heater block 6a and a second heater block 6b as a pair of horizontal seal blocks with the conveyance path of the packaging film F interposed therebetween. The horizontal sealer 6 is driven and controlled so as to carry out a horizontal sealing process, and sandwiches the packaging film F formed in a rectangular tube shape in the width direction and periodically performs horizontal sealing. Then, by cutting from the center by a cutter (not shown) in the block at the time of horizontal sealing, a packaging bag 100 having a top seal 101 and a bottom seal 102 above and below is formed.

  The rectangular cylindrical packaging film F is formed with a bottom seal 102 by the first horizontal seal, and thereafter, the packaging film A is filled into the packaging film F from the bag making tube 3 and fed downward. Here, in the present embodiment, the package A filled in the packaging bag 100 is a granular material having a relatively light weight. After the packaging film F is fed out by a predetermined amount, the top seal 101 is formed by the second horizontal seal, and the packaging bag 100 is manufactured. The top seal 101 of the previous packaging bag 100 and the bottom seal 102 of the next packaging bag 100 are laterally sealed simultaneously.

  Moreover, in this embodiment, the gusset square bottom process is implemented and the packaging bag 100 is formed in a packaging bag with a square bottom and a gusset. The vertical bag making filling and packaging machine is configured to form a square bottom 103 in the packaging bag 100, and a pair of triangular folding guides 10 facing each other across the conveyance path of the packaging film F between the bag making tube 3 and the horizontal sealer 6. It has. The pair of triangular folding guides 10 are formed so that the tips thereof are formed in a substantially isosceles triangular shape, and the tops of the pair of triangular folding guides 10 are arranged so as to face the central portion of the side surface of the rectangular tubular packaging film F. The pair of triangular folding guides 10 moves close to and away from each other in the opening / closing orthogonal direction of the horizontal sealer 6.

  The pair of triangular folding guides 10 moves in conjunction with the advancement when the horizontal sealer 6 performs horizontal sealing, and is inserted horizontally on both sides of the packaging film F. Thereby, both sides of the packaging film are folded into a triangular shape, and a square base 103 is formed immediately above the bottom seal 102.

  The vertical bag making filling and packaging machine has a configuration in which a gusset 104 is formed in the upper part of the packaging bag 100, and a pair of vertical folding guides 20 facing each other across the conveyance path of the packaging film F are provided at a position below the horizontal sealer 6. I have. The pair of vertical folding guides 20 is a flat plate-like member, and is arranged so that the edges of each other are just opposite to the central portion of the side surface of the rectangular tubular packaging film F. The pair of vertical folding guides 20 move close to and away from each other in the direction perpendicular to the opening and closing of the horizontal sealer 6, as with the triangular folding guide 10.

  The pair of vertical folding guides 20 moves together with the pair of triangular folding guides 10 in conjunction with the advancement when the horizontal sealer 6 performs horizontal sealing, and is inserted into both sides of the packaging film F. Thereby, both sides of the packaging film F are folded in the vertical direction, and the gusset 104 is formed below the top seal 101.

  Furthermore, as shown in FIG. 1, the vertical bag making filling and packaging machine is provided with a pair of gas venting members 30 extending immediately below the horizontal sealer 6 in the same width direction as the horizontal sealer 6. The gas vent member 30 is in the height region of the packaging film F into which the pair of vertical folding guides 20 are inserted, and moves together with the horizontal sealer 6 so as to be orthogonal to the insertion direction of the vertical folding guide 20. The gas vent member 30 is made of a material that is relatively easy to deform, such as sponge, and the lower side of the opposing surface is formed as an inclined surface 31. The gas release member 30 presses the packaging film F from the front-rear direction orthogonal to the insertion direction of the vertical folding guide 20 during horizontal sealing by the horizontal sealer 6.

  This gas vent member 30 deforms the upper portion of the packaging bag 100 along the inclined surface 31 by pressing the rectangular tubular packaging film F. Thus, the gusset 104 is formed in cooperation with the pair of vertical folding guides 20 inserted on both sides of the packaging film F. Moreover, the gas which exists in the packaging film F can be easily extracted by pressing the packaging film F from the front-back direction.

[Configuration of main drive unit and guide drive unit]
FIG. 2 is a plan view showing a main driving device and a guide driving device of the vertical bag making filling and packaging machine according to the present embodiment, and FIG. 3 is a side view of the main driving device and the guide driving device of FIG. FIG. 4 is a block diagram of a control system of the same vertical bag making filling and packaging machine.
Next, the configuration of the main drive device and the guide drive device will be described with reference to FIGS. Formation of the packaging bag 100 with a square bottom and a gusset is performed in conjunction with an operation in which the horizontal sealer 6 sandwiches the front and rear sides of the rectangular tubular packaging film F and deforms the packaging film F in the closing direction. For this reason, the guide driving device (guide driving means) 50 that integrally drives the pair of triangular folding guides 10 and the vertical folding guide 20 is interlocked with the main driving device (main driving means) 40 that drives the horizontal sealer 6. It is configured.

  The main drive device 40 controls the rotation of the drive source 41 to open and close the first heater bracket 43 and the second heater bracket 45 via a link or the like. The first and second heater blocks 6a and 6b perform lateral sealing by opening and closing the heater brackets 43 and 45.

  The lateral sealing of the packaging film F is performed by the first and second heater blocks 6a and 6b being simultaneously advanced from the opening position Y to the sealing position X and sandwiching the packaging film F at the sealing position X. When the horizontal seal is completed, the first and second heater blocks 6a and 6b are simultaneously retracted from the seal position X and returned to the open position Y.

  In addition, the main drive device 40 of the present embodiment is configured to perform a horizontal sealing process including an intermediate movement process, a stopping process, and a horizontal sealing completion process, and the first and second heater blocks 6a according to each process. , 6b is controlled in the closing direction. Each of these steps will be described later.

  On the other hand, the guide drive device 50 includes an angle 51, a cylinder 52, a moving bracket 53, a first support member 56, a second support member 57, and an air valve 58 as shown in FIGS. And a pair of cam rollers 54 and plate cams 55 that constitute an interlocking mechanism according to the above. In this description, the guide driving device 50 on one side will be described in detail.

  The cylinder 52 controls movement of the movable part in a forward direction approaching the packaging film F and a retreating direction away from the packaging film F. The movable part is moved by air supplied at each set timing from an air valve 58 connected to an air supply source (not shown). In addition, the moving direction of the movable part is changed by switching the air supply method between forward movement and retraction.

  The moving bracket 53 is attached to the movable portion of the cylinder 52, and the cam roller 54, the first support member 56, and the second support member 57 are attached to the moving bracket 53. The cam roller 54 is rotatably mounted above the moving bracket 53.

  The first support member 56 is fixed to the upper surface of the moving bracket 53, and the triangular folding guide 10 is attached to the tip. The triangular folding guide 10 is disposed at a position slightly higher than the upper surfaces of the first and second heater blocks 6a and 6b by the first support member 56 (see FIG. 3). The second support member 57 is fixed to the lower portion of the moving bracket 53, and the vertical folding guide 20 is attached to the tip portion. The vertical folding guide 20 is disposed at a position lower than the lower surfaces of the first and second heater blocks 6a and 6b by the second support member 57.

  The cam roller 54, the triangular folding guide 10, and the vertical folding guide 20 are close to each other and the same configuration facing each other by the advancement of the movable portion to which the moving bracket 53 is attached, and are separated from each other by facing the movable portion. At the time of this proximity, the triangular folding guide 10 and the vertical folding guide 20 are inserted into the side of the rectangular tubular packaging film F.

A plate cam 55 is attached to the upper surface of the first heater bracket 43 of the main drive device 40 in a state where the height position is adjusted so as to be flush with the cam roller 54. The plate cam 55 extends in the direction of the seal position X and is curved from the middle in the opening direction by a predetermined angle. The plate cam 55 extends to a position beyond the cam roller 54 when the first heater bracket 43 is close to the drive source 41 (opening position Y of the first heater block 6a) (see FIG. 2). As a result, the plate cam 55 is configured to restrict the advance of the cam roller 54.
The plate cam 55 has a long hole (not shown) so that the position with the first heater bracket 43 can be adjusted.

  In the gusset angle bottom forming step, the guide driving device 50 is supplied with air for advancing the movable portion of the cylinder 52 from the air valve 58 in accordance with the set timing and tries to move the moving bracket 53 forward. 54 is restricted. For this reason, in the state where the first heater block 6a is in the open position Y, the forward movement of the triangular folding guide 10 and the vertical folding guide 20 is in a standby state.

  From this state, when the first heater bracket 43 advances toward the seal position X by the drive source 41, the plate cam 55 also advances at the same time. Therefore, the moving bracket 53 that has been in the standby state starts moving forward while the cam roller 54 is guided according to the inclination of the plate cam 55, thereby moving the vertical folding guide 20 and the triangular folding guide 10 forward. Then, the triangular folding guide 10 is inserted into the side of the rectangular tube-shaped packaging film F to form the square bottom 103, and the vertical folding guide 20 is inserted into the side of the rectangular tube-shaped packaging film F to fix the gusset 104. Form.

  After the square base 103 and the gusset 104 are formed on the packaging film F, air for retracting the movable part of the cylinder 52 is supplied from the air valve 58 according to the set timing. Thereby, the moving bracket 53 is retracted, and the vertical folding guide 20 and the triangular folding guide 10 are also retracted. In this way, the gusset square bottom forming step is performed in conjunction with the movement of the horizontal sealer 6.

Further, as shown in FIG. 4, the vertical bag making filling and packaging machine includes a control device (control means) 60 connected to the drive source 41 of the main drive device 40 and the air valve 58 of the guide drive device 50. A setting panel (setting input means) 61 is connected to the control device 60, and various settings for making the packaging bag 100 with a square bottom and a gusset are input via the setting panel 61. Furthermore, the control device 60 is also connected to a feeding belt 4 that feeds the packaging film F, a filling mechanism that fills the package A, and the like (not shown).
The vertical bag making filling and packaging machine is configured to operate the control device 60 in conjunction with the feeding of the packaging film F, the filling of the article A to be packaged, the horizontal sealing process, the square bottom gusset forming process, and the like.

[Operation of horizontal sealing process and gusset square bottom forming process]
Next, the horizontal sealing process of the vertical bag making filling packaging method for making a packaging bag with a square bottom and a gusset, and the operation of the gusset square bottom forming process according to the horizontal sealing process will be described.
FIG. 5 is a schematic diagram showing in sequence the flow of horizontal sealing in the vertical bag making filling and packaging machine according to the present embodiment, wherein (a), (c), (e), and (g) are side views, and (b) and (d). (F) (h) is each ZZ line arrow view of (a) (c) (e) (g).

  As shown in FIGS. 5 (a) and 5 (b), the vertical bag making filling and packaging machine fills the packaging film F with a packaged article (powder body) A and feeds the packaging film F downward by a predetermined amount. Thereafter, an intermediate movement process of the horizontal sealing process is performed.

  In the intermediate movement process, as shown in FIG. 5C, the drive source 41 is driven to move the first and second heater blocks 6a, 6b and the gas vent member 30 in the closing direction, and the packaging film F is moved in the front-rear direction. Press between the two. Further, as the first and second heater blocks 6a and 6b move, the cam roller 54 is guided to the plate cam 55, and the pair of triangular folding guides 10 and the vertical folding guides 20 that have been waiting are respectively advanced. Then, both sides of the packaging film F are folded (see FIG. 5D). As a result, the volume of the packaging film F on the upper surface of the article A to be packaged decreases, and the air contained inside escapes in the opening direction (upward). For this reason, the to-be-packaged object A filled with the escape of air soars.

  When the first and second heater blocks 6a and 6b move to the intermediate movement position, the intermediate movement process is terminated. And as shown in FIG.5 (e), the stop process which pauses the 1st, 2nd heater block 6a, 6b in this intermediate movement position is implemented. During this temporary stop, the packaged item A that has been flying up falls.

  The intermediate movement positions of the first and second heater blocks 6a and 6b can be freely set by the operator according to the type and filling amount of the package A to be filled in the packaging film F and the stop time. Can do. The operator inputs an interval between the first and second heater blocks 6a and 6b through the setting panel 61 and sets an intermediate movement position. The control device 60 drives the drive source 41 according to the input settings, appropriately moves the first and second heater blocks 6a and 6b to the intermediate movement position, and stops. Thereby, the to-be-packaged object A which rose can be dropped efficiently.

  In this stopping step, as the first and second heater blocks 6a and 6b are temporarily stopped, the guide of the cam roller 54 by the plate cam 55 is also stopped, and the insertion of the pair of triangular folding guide 10 and the vertical folding guide 20 is also stopped. . Here, the intermediate movement position is set as an interval between the first and second heater blocks 6 a and 6 b so that the pair of triangular folding guides 10 inserted into the packaging film F can form the square base 103. (See FIG. 5 (f)). Therefore, a pair of triangular folding guides 10 are inserted into the packaging film F to form a square bottom 103 immediately above the horizontal sealing position, and at the same time, a pair of vertical folding guides 20 are inserted into the wrapping film 104 below the horizontal sealing position. Is formed.

When the first and second heater blocks 6a and 6b are stopped for a predetermined time at the intermediate movement position, the stop process is ended and the horizontal seal completion process is performed. At the stage where the stopping process is completed, the pair of triangular folding guides 10 and the vertical folding guide 20 has completed the formation of the square base 103 and the gusset 104. For this reason, as shown in FIG. 5 (h), air is supplied from the air valve 58 to the cylinder 52 to drive the movable portion, and the pair of triangular folding guides 10 and the vertical folding guide 20 are retracted to their original positions.
The square bottom 103 and the gusset 104 are formed by inserting the pair of triangular folding guide 10 and the vertical folding guide 20 into the packaging film F simultaneously with the sandwiching of the packaging film F by the first and second heater blocks 6a and 6b. Therefore, the guides 10 and 20 may be saved together with the end of the intermediate movement process.

  In the horizontal sealing completion step, as shown in FIG. 5G, the first and second heater blocks 6a and 6b are further moved in the closing direction to sandwich the packaging film F and perform horizontal sealing. When the first and second heater blocks 6a and 6b horizontally seal the packaging film F, the triangular folding guide 10 and the vertical folding guide 20 are already retracted and are not inserted into the packaging film F. For this reason, the first and second heater blocks 6a and 6b smoothly wrap the packaging film F without the guides 10 and 20 overloading the packaging film F and causing damage such as pinholes. Can be sealed horizontally.

  In the horizontal sealing completion process, the packaging film F is cut by a cutter together with the horizontal sealing by the first and second heater blocks 6a and 6b, and a packaging bag 100 with a square bottom and a gusset is formed below the horizontal sealer 6. . On the other hand, the upper packaging film F is in a state in which the bottom seal 102 and the square bottom 103 are formed.

  In this horizontal seal completion process, the package A that has been swollen by the previous stop process has already dropped, so the first and second heater blocks 6a and 6b do not bite the package A, The packaging film F can be inserted. Therefore, the vertical bag making filling and packaging machine can manufacture a packaging bag 100 with a square bottom and a gusset that are neatly sealed horizontally.

As described above, the vertical bag making filling and packaging machine suppresses the biting of the package A when the packaging film F is laterally sealed by performing this vertical bag making filling and packaging method, and there is no gas leakage or the like. A quality packaging bag 100 can be manufactured stably. Thereby, it is not necessary to make a space above the article A to be packaged in the packaging film F, and the article A can be filled up to the vicinity of the top seal 101. Therefore, resource saving can be realized by reducing the packaging film F used for the packaging bag 100, and the holding of the packaged article A that is easily oxidized can be reduced by reducing the air in the packaging film F.
Moreover, since the vertical bag making filling and packaging machine does not need to use a blocking member or the like for preventing the packaged item A from flying up, the manufacturing cost can be reduced.

〔Example〕
In the present embodiment, a plurality of experiments were performed in order to set the intermediate movement position. As a result of the experiment, when the distance between the first and second heater blocks 6a and 6b is set to 5 mm to 8 mm, the so-called package A that has risen surely falls and the square bottom 103 that is clear on the packaging film F is clear. Could be formed.

  The present invention is not limited to the above-described embodiments, and various modifications and application examples can be applied. For example, in the present embodiment, the pair of triangular folding guides 10 and the vertical folding guide 20 are configured to be retracted before the horizontal sealing completion process. However, when the packaging film F is not easily damaged, the horizontal sealing completion process is performed. As the first and second heater blocks 6a and 6b move to the horizontal seal position X, the pair of triangular folding guide 10 and vertical folding guide 20 may be further inserted. Thus, by further inserting the pair of triangular folding guide 10 and vertical folding guide 20, the square base 103 and the gusset 104 can be formed more beautifully.

1: reel, 2: former, 3: bag making tube, 4: feeding belt, 5: vertical sealer, 6: horizontal sealer, 6a: first heater block, 6b: second heater block 10: triangular folding guide,
20: Vertical folding guide,
30: Degassing member, 31: Inclined surface,
40: main drive device (main drive means), 41: drive source, 43: first heater bracket, 45: second heater bracket,
50: guide driving device (guide driving means), 51: angle, 52: cylinder, 53: moving bracket, 54: cam roller, 55: plate cam, 56: first support member, 57: second support member, 58: air valve ,
60: Control device, 61: Setting panel (setting input means),
100: packaging bag, 101: top seal, 102: bottom seal, 103: square bottom, 104: gusset,
A: Package, F: Packaging film, X: Seal position, Y: Open position

Claims (1)

A horizontal sealing step of sandwiching a packaging film formed in a cylindrical shape with a pair of horizontal sealing blocks and laterally sealing;
A pair of triangular folding guides are inserted into a portion of the packaging film immediately above the laterally sealed portion to form a square bottom, and a pair of vertical folding guides are inserted into the lower portion of the laterally sealed portion to form a gusset. In the vertical bag making filling and packaging method including the square bottom gusset forming step,
The horizontal sealing step includes an intermediate moving step of moving the pair of horizontal seal blocks in a closing direction to an intermediate moving position spaced from each other, and a stop of temporarily stopping the pair of horizontal seal blocks at the intermediate moving position. And after the stopping step, a horizontal seal completion step of further moving the pair of horizontal seal blocks in the closing direction to sandwich the packaging film and laterally seal,
In the intermediate movement position, the pair of lateral seal blocks are brought close to each other up to an interval at which a square bottom can be formed on the packaging film by the pair of triangular folding guides,
The vertical bag making filling and packaging method, wherein the square bottom gusset forming step is performed from the intermediate moving step to the stopping step .

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