JP2010006383A - Bag forming and packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag forming and packaging machine forming a good appearance, quadrangular bottom free from wrinkles and darts in a sealed portion. <P>SOLUTION: The bag forming and packaging machine 3 comprises: a pull-down belt mechanism 14; a lateral sealing mechanism 18; a guide mechanism 16; and a bottom forming mechanism 17. The pull-down belt mechanism 14 conveys a film F. The lateral sealing mechanism 18 seals the film F in a sidewise direction intersecting a conveying direction for the film F. After the film F is sealed by the lateral sealing mechanism 18, the guide mechanism 16 pushes the film F wide from inside in a conveying direction in a lengthwise direction intersecting the sidewise direction. The bottom forming mechanism 17 is disposed between the lateral sealing mechanism 18 and guide mechanism 16, to form a bottom of the film F. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bag making and packaging machine, and more particularly to a bag making and packaging machine that fills a bag with a package while sealing the packaging formed in a cylindrical shape.

BACKGROUND ART A bag making and packaging machine exists as an apparatus that fills a bag with food and other articles to be packaged while manufacturing the bag.

  For example, a vertical pillow wrapping machine forms a packaging material, which is a sheet-like film, into a cylindrical shape by a former and a tube, and seals the vertical edges of the cylindrical packaging material by means of vertical sealing means (heat sealing) ) Then, the packaged material that falls in the tube is filled into a cylindrical packaging material, and sealed across the upper part of the bag and the lower part of the succeeding bag by the horizontal sealing mechanism below the tube. Cut the center of the seal with a cutter. Among such bag making and packaging machines, a bag making and packaging machine is disclosed in which the lower part of the formed bag is square-bottomed.

In Patent Document 1, a horizontal seal is formed on a rectangular tube-shaped film tube, and at the same time, a pair of horizontal seal bars that form a flat bottom in cooperation with the lower end of the filling tube, and the flat bottom is formed along with the formation of the flat bottom. A pair of ear seal bars that directly or indirectly sandwich the triangular ears protruding on both sides of the horizontal seal bar and a bottom seal formed by cutting the horizontal seal are folded into the flat bottom and the lower surface of the triangular ear A bag making and packaging machine is disclosed that includes a bottom seal folding plate that heat-seals and a pair of ear folding plates that heat-seal by folding a triangular ear into the lower surface of the flat bottom after the bottom seal is folded.
JP 2006-96359 A

  However, the conventional bag making and packaging machine has the following problems.

  That is, in the above conventional bag making and packaging machine, the positions of the square cylindrical film cylinder forming the square bottom shape and the horizontal seal bar for horizontal sealing are close to each other, and the cylindrical film is overlapped in an optimal state. Can not be sealed sideways. For this reason, wrinkles and darts are generated in the seal portion.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described conventional problems, and to provide a bag making and packaging machine that can form a square bottom having good appearance without wrinkles and darts in a seal portion.

  A bag making and packaging machine according to a first aspect of the present invention is a bag making and packaging machine that performs bag making by sealing a packing material formed in a cylindrical shape, A material transport mechanism, a seal mechanism, a guide mechanism, and a bottom surface generation mechanism are provided. The packaging material transport mechanism transports the packaging material. The sealing mechanism seals in the width direction crossing the packaging material conveyance direction. The guide mechanism seals the packaging material by the sealing mechanism, and then spreads the packaging material from the inside of the packaging material in the depth direction intersecting the transport direction and the width direction. The bottom surface generation mechanism is disposed between the seal mechanism and the guide mechanism and forms a bottom surface portion of the packaging material.

  Here, after the sealing mechanism seals the packaging material, a guide mechanism is provided that spreads the packaging material from the inside of the packaging material in the depth direction intersecting the transport direction and the width direction.

  “Upstream side” and “downstream side” refer to “upstream side” and “downstream side” based on the transport direction of the film transported by the packaging material transport mechanism.

  Conventionally, in order to form the square base of the packaging material, the packaging material is overlapped and laterally sealed immediately downstream of the square tube forming the square bottom shape, and the packaging material is bent along the lower end portion of the square tube. . However, since the rectangular tube forming the square bottom shape and the position of the horizontal seal are close to each other, the packaging materials cannot be overlapped in an optimum state. For this reason, defects such as wrinkles and darts occurring in the horizontal seal portion occur, and a square base with a good appearance cannot be formed.

  Therefore, in the bag making and packaging machine of the present invention, a guide mechanism that pushes the packaging material in the depth direction from the inside of the packaging material laterally sealed by the sealing mechanism is arranged upstream of the bottom surface generation mechanism.

  As a result, after the packaging materials are overlapped in an optimal state and laterally sealed, the packaging material is pushed in the depth direction by the guide mechanism, and the bottom surface can be formed. Further, by adjusting the amount of spread of the packaging material by the guide mechanism, it becomes possible to finish the square base to a desired depth dimension.

  As a result, there is no wrinkle or dart in the seal portion, and it is possible to form a square bottom with good appearance.

  The bag making and packaging machine according to the second invention is the bag making and packaging machine according to the first invention, and the guide mechanism is formed by a member extending in the width direction.

  Here, the guide mechanism is formed by a member extending in the transport direction and the width direction.

  Thereby, it becomes possible to form the side along the width direction that forms the bottom surface with better appearance.

  A bag making and packaging machine according to a third aspect of the present invention is the bag making and packaging machine according to the first or second aspect of the present invention, wherein the guide mechanism is configured to wrap while the bottom surface generating mechanism forms the bottom surface portion of the packaging material. Spreading the material.

  Here, the guide mechanism continues to spread the packaging material while the bottom surface generation mechanism forms the bottom surface portion of the packaging material.

  Thereby, for example, it is possible to prevent the square bottom shape from collapsing when the bottom surface generation mechanism performs the operation of folding the seal portion.

  A bag making and packaging machine according to a fourth invention is the bag making and packaging machine according to any one of the first to third inventions, wherein the guide mechanism includes a guide member that spreads the packaging material, and a width direction. Are arranged along the rotation axis, the rotation shaft serving as the rotation center for the downstream end side of the guide member to rotate in the depth direction, the pressing portion that can be pressed in the rotation axis direction, and the pressing force that acts on the pressing portion. It has a transmission mechanism that transmits pressure to the guide member as a force that spreads the packaging material, and a pressing mechanism that presses the pressing portion.

  Here, by pressing the pressing portion from the outside of the packaging material, the guide member can spread the packaging material.

  This eliminates the need to dispose a complicated drive unit or the like inside the packaging material, so that the inside of the packaging material, i.e., the supply path of articles contained in the packaging material can be avoided.

A bag making and packaging machine according to a fifth invention is the bag making and packaging machine according to any one of the first to fourth inventions, wherein the guide mechanism is a lower end of a cylindrical chute for putting an article into a packaging material. Fixed to the
Here, the guide mechanism is attached to the lower end of the cylindrical chute.

  This makes it possible to easily attach the guide mechanism to a bag making and packaging machine that does not have a guide mechanism.

  According to the bag making and packaging machine according to the present invention, it is possible to form a square base having good appearance without wrinkles and darts in the seal portion.

  It will be as follows if the bag making packaging machine which concerns on one Embodiment of this invention is demonstrated using FIGS.

  In the following description, “upstream side” and “downstream side” mean directions based on the direction in which the film (wrapping material) F is conveyed.

[Configuration of the entire combination weighing system 1]
As shown in FIG. 1, the combination weighing system 1 according to the present embodiment measures a packaged item (article) C (see FIG. 2), covers the measured packaged product C with a film, and forms a cylinder. A device that seals the film F thus formed vertically and horizontally and packs an article to be packaged C, and mainly includes a combination weighing device 2 and a bag making and packaging machine 3.

  In the combination weighing device 2 provided above the bag making and packaging machine 3, the packaged item C is weighed by a predetermined weight and stored in each hopper, so that a predetermined total weight is obtained by counting the number of times. Discharged.

  As shown in FIG. 1, the combination weighing device 2 is arranged on an upper portion of a bag making and packaging machine 3 to be described later, and after weighing a predetermined amount of the packaged article C in a weighing hopper, The number of times is measured by combining the total weight so as to be discharged sequentially to obtain a packaged object C having a predetermined total weight.

  The bag making and packaging machine 3 is a device that uses a film F that is continuously transported to pack the articles C to be packaged that have been discharged by a predetermined total weight as a result of the count measurement in the combination weighing device 2.

[Overall configuration of bag making and packaging machine 3]
A bag making and packaging machine 3 according to an embodiment of the present invention is a machine for bagging an article C to be packaged contained in a part of a combination weighing system 1, and as shown in FIGS. 1 and 2, The bag making and packaging unit 5 which is a main body for bagging the article to be packaged C, and the film supply unit 6 for supplying the bag making and packaging unit 5 with a film serving as a bag. Further, operation switches 7 are arranged on the front surface of the bag making and packaging unit 5, and a liquid crystal display 8 showing an operation state is arranged at a position where an operator who operates the operation switches 7 can visually recognize.

  The film supply unit 6 is a unit that supplies a sheet-like film F to the forming mechanism 13 of the bag making and packaging unit 5 described later, and is provided adjacent to the bag making and packaging unit 5 here. A roll around which the film F is wound is set in the film supply unit 6, and the film F is fed out from the roll.

  As shown in FIGS. 1 to 3, the bag making and packaging unit 5 includes a forming mechanism 13 for forming a film F sent in a sheet shape into a cylindrical shape, and a cylindrical film F (hereinafter referred to as a cylindrical film). F.) pull-down belt mechanism (packaging material transport mechanism) 14, a vertical seal mechanism 15 that vertically seals (heat seals) the overlapping portion of the tubular film F, and the tubular film F. A guide mechanism 16 that spreads from the inside, a bottom surface generation mechanism 17 that folds the bottom surface of the laterally sealed packaging material, and a horizontal seal mechanism that closes the upper and lower ends of the bag by sealing the cylindrical film F sideways ( (Seal mechanism) 18, a discharge conveyor 19 that conveys the formed bag B in the discharge direction, and a support frame 12 that supports these mechanisms. A casing 9 is attached around the support frame 12.

[Detailed configuration of bag making and packaging unit 5]
As shown in FIGS. 2 and 3, the forming mechanism 13 has a tube (cylindrical chute) 31 and a former 32.

  The tube 31 is a cylindrical member, and the upper and lower ends are open. The tube 31 is planarly disposed in the central opening portion of the top plate 29 and is integrated with the former 32 via a bracket (not shown). An article to be packaged C weighed from the combination weighing device 2 is put into the opening at the upper end of the tube 31.

  The former 32 is disposed so as to surround the tube 31. The shape of the former 32 is such that the sheet-like film F sent from the film supply unit 6 is formed into a cylindrical shape when passing between the former 32 and the tube 31. The former 32 is also fixed to the support frame 12 via a support member (not shown).

  The pull-down belt mechanism 14 and the vertical seal mechanism 15 are supported by rails 40 suspended from the top plate 29, and are arranged so as to sandwich the tube 31 from both sides. The pull-down belt mechanism 14 and the vertical sealing mechanism 15 are moved and aligned along the rail 40 when the tube 31 is attached.

  The pull-down belt mechanism 14 is a mechanism that sucks the cylindrical film F wound around the tube 31 and conveys it downward. The pull-down belt mechanism 14 is mainly composed of a driving roller 41 and a driven roller 42 and a belt 43 having a sucking function. . Here, illustration of a drive motor for rotating the drive roller 41 and the like is omitted.

  The vertical sealing mechanism 15 is a mechanism that heats and vertically seals the overlapping portion of the cylindrical film F wound around the tube 31 against the tube 31 with a constant applied pressure. The vertical sealing mechanism 15 includes a heater, a heater belt that is heated by the heater and contacts an overlapping portion of the tubular film F, and the like. Further, although not shown, the vertical seal mechanism 15 also includes a driving device for moving the heater belt closer to or away from the tube 31.

  The guide mechanism 16 is disposed between the tube 31 and a lateral seal mechanism 18 to be described later. After the film F is sealed by the lateral seal mechanism 18, the depth direction intersects the transport direction and the width direction from the inside of the film F. Spread film F over. As shown in FIGS. 4A and 4B, the guide mechanism 16 includes a pair of guide members 45, a rotation shaft 46, a pair of pressing portions 47, a transmission mechanism 48, and a pressing mechanism. 49 (see FIG. 3).

  The guide member 45 is arrange | positioned inside the film F formed in the cylinder shape currently conveyed. That is, the tubular film F passes outside the guide member 45. The guide member 45 is attached to the lower end of the tube 31 so as to be rotatable about a rotation shaft 46 described later. Thereby, the lower end of the guide member 45 can be rotated from the rear side to the front side or from the front side to the rear side, and the force transmitted by the transmission mechanism 48 can spread the film F from the inner side to the outer side. it can. When the force is not applied by the pressing mechanism 49, the guide member 45 is in a state in which the lower end of the guide member 45 is directed straight down by its own weight as shown in FIG. When force is applied, the lower end of the guide member 45 is opened as shown in FIG. The depth dimension of the bag B can be adjusted by the opening amount L of the guide member 45. The rotation shaft 46 is disposed along the left-right direction (width direction) and constitutes the rotation shaft of the guide member 45. The pressing portion 47 is disposed opposite to the lower end of the tube 31 and is disposed so as to be pressed by the pressing mechanism 49. The transmission mechanism 48 converts the pressing force acting on the pressing portion 47 into a force for the guide member 45 to spread the film F and transmits it. The pressing mechanism 49 presses the pressing portion 47, and the pressing mechanism 49 is configured by, for example, an air cylinder that is a kind of reciprocating actuator.

  The bottom surface generation mechanism 17 is disposed between the guide mechanism 16 and the lateral seal mechanism 18 and forms a square bottom of the film F laterally sealed by the lateral seal mechanism 18 described later. Then, as shown in FIG. 3, the bottom surface generation mechanism 17 includes a bottom surface seal folding plate 51, a pair of bottom side surface folding plates 52, and a bottom surface sealing folding plate 51 and a pair of bottom side surface folding plates 52. It is comprised so that the drive device for approaching or keeping away from the cylindrical film F may be included.

  The bottom seal folding plate 51 is arranged to be movable in the front-rear direction (depth direction), and bends the seal portion sealed by the lateral seal mechanism 18 from the rear side to the front side. The bottom side folding plate 52 is arranged so as to be movable in the left-right direction, and bends the bottom surface of the film F from the left side of the film F to the right side or from the right side to the left side.

  As shown in FIG. 3, the horizontal sealing mechanism 18 includes a pair of sealing jaws 61, 61 containing a heater belt and the like, and a sealing jaw 61, 61 for moving the sealing jaws 61, 61 closer to or away from the tubular film F, although not shown. It is comprised so that a drive device may be included.

  As shown in FIG. 3, the seal jaws 61 and 61 are members formed extending in the left-right direction, and the seal surface of the seal jaw 61 is heated by a built-in heater belt or the like. The tubular film F is heat-sealed by being sandwiched between the left and right sealing jaws 61, 61, and then cut by a knife (not shown).

  The discharge conveyor 19 is a transport mechanism for discharging the bag B containing the article C to be packaged cut from the film F in the horizontal sealing mechanism 18 in the upstream process. And the discharge conveyor 19 is comprised so that the drive device for moving the conveyor 55, the attachment-type guide 56, and the conveyor 55 may be included, as shown in FIG. The conveyor 55 places the bag B and conveys the bag B in the conveyance direction. The conveyor 55 is intermittently controlled so that the bags B are dropped to a predetermined placement position. The attachment type guide 56 is a guide for partitioning the bag B, and is configured to be freely attached.

[Operation of bag making and packaging machine 3]
Next, operation | movement of the bag making packaging machine 3 is demonstrated using Fig.6 (a)-FIG.8 (b).

  As shown in FIG. 6A, the sheet-like film F sent from the film supply unit 6 to the forming mechanism 13 is wound around the tube 31 from the former 32 and formed into a cylindrical shape. It is conveyed downward. The film F is in a state where both ends are overlapped on the peripheral surface in the state of being wound around the tube 31, and the overlapped portion is vertically sealed by the vertical seal mechanism 15.

  The cylindrical film F that has been sealed vertically and has a cylindrical shape passes through the tube 31 and is conveyed to the side sealing mechanism 18 side. Then, as shown in FIG. 6B, the sealing jaws 61, 61 of the lateral sealing mechanism 18 completely sandwich the tubular film F and thermally seal it with the sealing surfaces of the sealing jaws 61, 61, and at the same time, The part is cut by a cutter (not shown). At this time, the pull-down belt mechanism 14 stops the conveyance of the film F. The guide member 45 of the guide mechanism 16 is closed at the lower end, and the bottom surface seal folding plate 51 and the pair of bottom side surface folding plates 52 of the bottom surface generation mechanism 17 are separated from the film F conveyance path. Have a refuge. Then, the mass of the article to be packaged C falls from the combination weighing device 2 through the tube 31.

  Next, as shown in FIG. 6 (b), when laterally sealed by the lateral seal mechanism 18, the guide mechanism 16 rotates the guide member 45 to push it from the inside of the film F. Specifically, when the pressing portion 47 is pressed in the A direction together with the film F by the pressing mechanism 49, the transmission mechanism 48 that converts the force acting on the pressing portion 47 into the rotational force of the guide member 45 causes the guide member 45 to move. Rotate in B direction. Thereby, as shown to Fig.7 (a), the two guide members 45 will be in the mutually open state, and will spread and spread the film F toward inner side from the inner side. And the opening amount (refer FIG. 5) of the guide member 45 is set to the square bottom dimension of the bag B to form.

  Next, as shown in FIG. 7A, the bottom seal folding plate 51 included in the bottom surface generation mechanism 17 is moved in the C direction, and the lateral seal portion of the film F is bent in the C direction.

  Next, as shown in FIG. 7B, the pair of bottom side surface folding plates 52 included in the bottom surface generation mechanism 17 are moved in the D direction, and the bottom side surface portion of the film F is bent in the D direction.

  The pressing mechanism 49 continues to press the pressing portion 48 while the bottom seal folding plate 51 bends the lateral seal portion of the film F and the pair of bottom side folding plates 52 bend the bottom side portion of the film F. Yes. That is, the guide member 45 continues to push and spread the film F while the bottom seal folding plate 51 bends the lateral seal portion of the film F and the pair of bottom side folding plates 52 bend the bottom side portion of the film F. .

  6B, FIG. 7A, and FIG. 7B, that is, the bottom portion of the film F is opened to the depth dimension by the guide member 45, and the lateral seal portion of the film F is opened by the folding plate 51. By folding and folding the bottom side surface portion of the film F with the bottom side folding plate 52, it is possible to form a square bottom surface portion having a good appearance.

  Next, as shown in FIG. 8, the pull-down belt mechanism 14 that has been temporarily stopped is activated to transport the film F to the downstream side. Then, after the pull-down belt mechanism 14 sends out a film F that is long enough to form the bag B, the lateral seal mechanism 18 laterally seals the film F and cuts the film F, thereby completing the bag B with a square bottom formed. To do. Here, in the bag making and packaging machine 3 of the present embodiment, when the bag B is placed on the discharge conveyor 19, the bag B is formed to freely drop by a predetermined distance. Thereby, the bottom face of the bag B can be flattened, and a square base with better appearance can be formed. Since the discharge conveyor 19 places and transports the bags B at the placement positions partitioned one by one, the intermittent conveyance control is performed in accordance with the timing when the bags B fall.

[Features of bag making and packaging machine 3]
(1)
The bag making and packaging machine 3 of the present embodiment has a guide mechanism 16 that spreads the packaging material in the front-rear direction (depth direction) from the inside of the film F that is laterally sealed by the lateral seal mechanism 18 on the upstream side of the bottom surface generation mechanism 17. It is arranged. Accordingly, after the films F are overlapped and laterally sealed in an optimal state, the film F can be spread in the front-rear direction by the guide mechanism 16 to form the bottom surface. Further, by adjusting the opening amount of the film F by the guide mechanism 16, it is possible to finish the square bottom to a desired depth dimension. As a result, there is no wrinkles or darts in the seal portion, and it is possible to form a square bottom with good appearance.

(2)
In the bag making and packaging machine 3 of the present embodiment, the guide member 45 included in the guide mechanism 16 is formed of a member that extends in the vertical direction (conveying direction) and the horizontal direction (width direction). Thereby, it is possible to form the side along the left-right direction that forms the bottom surface with better appearance.

(3)
In the bag making and packaging machine 3 of the present embodiment, the guide member 45 can spread the film F by pressing the pressing portion 47 together with the film F from the outside of the film F. Thereby, it is avoided that a complicated drive unit or the like is disposed inside the film F, and the inside of the film F, that is, the supply path for supplying the package C to the film F is avoided from being narrowed.

(4)
In the bag making and packaging machine 3 of the present embodiment, the guide mechanism 16 continues to push and spread the film F while the bottom surface generation mechanism 17 forms the bottom surface portion of the film F. Thereby, when the bottom face production | generation mechanism 17 folds a bottom face part, it prevents that a square bottom shape collapse | crumbles.

(5)
In the bag making and packaging machine 3 of the present embodiment, the guide mechanism 16 is fixed to the lower end of the tube 31, whereby the guide mechanism 16 can be easily applied to a bag making and packaging machine that does not include the guide mechanism 16. It is possible to attach to.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the bag making and packaging machine 3 of the above embodiment, the guide mechanism 16 has been described with an example in which the guide member 45 spreads the film F by the action of the pressing mechanism 49 arranged outside the film F. However, the present invention is not limited to this.

  For example, the guide member may spread the film by the action of a rod or wire passing through the tube. Further, a drive unit such as a motor may be provided to directly control the guide member. Also in this case, it is possible to obtain the same effect as the bag making and packaging machine 3 according to the above-described embodiment that it is possible to form a square base having a good appearance without wrinkles and darts in the seal portion.

(B)
In the bag making and packaging machine 3 of the above-described embodiment, the guide member 45 has been described with an example in which the guide member 45 is formed by a member extending in the left-right direction. However, the present invention is not limited to this.

  For example, you may apply the rod-shaped member which can spread a film in the front-back direction as a guide member. In addition, by arranging rod-shaped members on both the left and right sides according to the left and right dimensions of the bag to be manufactured, it is possible to finish the width and depth dimensions of the bag bottom to desired dimensions.

(C)
In the bag making packaging machine 3 of the said embodiment, the example which spreads the film F to the outer side by rotating one end of the guide member 45 demonstrated. However, the present invention is not limited to this.

  For example, the film may be spread out by horizontally moving the guide member in the front-rear direction.

(D)
In the bag making and packaging machine 3 of the above embodiment, the guide mechanism 17 has been described with an example in which the guide mechanism 17 is attached to the lower end of the tube 31. However, the present invention is not limited to this.

  For example, it may be attached to the frame independently.

1 is an external view of a combination weighing system including a bag making and packaging machine according to an embodiment of the present invention. Sectional drawing of the bag making packaging machine which concerns on one Embodiment of this invention. The disassembled perspective view which shows schematically the structure of the bag making packaging machine of FIG. (A), (b) is an expanded sectional view of the guide mechanism contained in the bag making packaging machine of FIG. The expanded sectional view of the guide mechanism contained in the bag making packaging machine of FIG. (A), (b) is explanatory drawing explaining operation | movement of the bag making packaging machine of FIG. (A), (b) is explanatory drawing explaining operation | movement of the bag making packaging machine of FIG. Explanatory drawing explaining operation | movement of the bag making packaging machine of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combination measuring system 2 Combination measuring apparatus 3 Bag making packaging machine 5 Bag making packaging unit 6 Film supply unit 7 Operation switch 8 Liquid crystal display 9 Casing 12 Support frame 13 Forming mechanism 14 Pull-down belt mechanism (packaging conveyance mechanism)
15 Vertical seal mechanism 16 Guide mechanism 17 Bottom generation mechanism 18 Horizontal seal mechanism (seal mechanism)
19 Discharge conveyor 29 Top plate 31 Tube (tubular chute)
32 Former 40 Rail 41 Driving roller 42 Driven roller 43 Belt 45 Guide member 46 Rotating shaft 47 Pressing part 48 Transmission mechanism 49 Pressing mechanism 51 Folding plate 52 Bottom side folding plate 55 Conveyor 56 Attachment type guide 61 Sealing jaw B Bag C Packaging Goods (goods)
F film (wrapping material)

Claims (5)

A bag making and packaging machine that fills a bag with a package while sealing the packaging formed in a cylindrical shape,
A packaging material transport mechanism for transporting the packaging material;
A sealing mechanism that seals in the width direction intersecting the conveying direction of the packaging material;
After sealing the packaging material by the sealing mechanism, a guide mechanism that spreads the packaging material from the inside of the packaging material in the depth direction intersecting the transport direction and the width direction;
A bottom surface generating mechanism that is disposed between the seal mechanism and the guide mechanism and forms a bottom surface portion of the packaging material;
A bag making and packaging machine. The guide mechanism is formed by a member extending in the width direction.
The bag making and packaging machine according to claim 1. The guide mechanism spreads the packaging material while the bottom surface generation mechanism forms the bottom surface portion of the packaging material.
The bag making and packaging machine according to claim 1 or 2. The guide mechanism is
A guide member for spreading the packaging material;
A rotation shaft that is disposed along the width direction and serves as a rotation center for the downstream end side of the guide member to rotate in the depth direction;
A pressing part capable of pressing in the direction of the rotation axis;
A transmission mechanism for transmitting a pressing force acting on the pressing portion to the guide member as a force for spreading the packaging material;
A pressing mechanism for pressing the pressing portion together with the film;
The bag making and packaging machine according to any one of claims 1 to 3, comprising: The guide mechanism is fixed to a lower end of a cylindrical chute for putting the article into the packaging material.
The bag making and packaging machine according to any one of claims 1 to 4.

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