JP2006341854A - Method of manufacturing two-component packaging bag having two storage compartment, and vertical filling packer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical filling packer for carrying out a manufacturing method of hardly forming wrinkles on a cylindrical film during drawing operation even if the weight of a filler is relatively heavy in manufacturing a two-component packaging bag by a drawing process. <P>SOLUTION: The two-component bag packer includes a pair of drawing rollers 50 which hold the cylindrical film 2 between them, and upper and lower holding mechanisms 110, 120 which are arranged above and below the drawing rollers 50 and hold the cylindrical film 2 between the mechanisms 110, 120 using holding members, respectively. The upper and lower holding mechanisms 110, 120 hold the cylindrical film 2 loaded with the filler before drawing operation by the drawing rollers 50 is carried out. While the cylindrical film 2 is held between both holding mechanisms 110, 120, the paired drawing rollers 50 are driven to divide the filler loaded into the cylindrical film 2 and form a vacant filling part 2a, where no filler is present, in the cylindrical film 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a production method and a vertical filling and packaging machine for producing a packaging bag by filling a liquid or paste-like filling into a resin-made tubular film and heat-sealing the tubular film. The present invention relates to a manufacturing method and a vertical filling and packaging machine for manufacturing a two-pack bag having two storage chambers.

  Conventionally, a cylindrical film made by folding a sheet-like film is fed downward, and a filling material is put into the cylindrical film, and heat-sealed every bag, so that a bag-packed product (packaging) A vertical filling and packaging machine that continuously manufactures bags) is known. In addition, in such a vertical filling and packaging machine, for example, a packaging bag (hereinafter referred to as a “two-pack bag packaging bag”) that stores different types of filling materials in each of the two storage chambers can be manufactured. Has also been proposed (see, for example, Patent Document 1).

  Hereinafter, an example of the vertical two-pack bag packaging machine proposed in Patent Document 1 will be described with reference to FIG. FIG. 19 is a front view showing an example of a conventional two-pack bag packaging machine.

  As shown in FIG. 19, the two-pack bag packaging machine 201 is arranged below a film folding mechanism 210 that folds a sheet-like film 202 ′ into two, and the film 202 ′ in its longitudinal direction. The first to third vertical sealing mechanisms 220, 230, and 240 that form the tubular film 202 by heat sealing (vertical sealing), and a pair of squeeze rollers configured to sandwich the cylindrical film 202 250, a horizontal sealing / cutting mechanism 260 disposed below the squeeze roller 250, and two charging nozzles 271 and 272 for charging different types of fillers into the tubular film 202.

  Before describing the details of each structural part of the two-pack bag packaging machine 201, the configuration of the two-pack bag packaging bag 280 will be described with reference to FIG. The two-pack bag 280 is a so-called four-side seal type packaging bag in which the entire periphery is heat-sealed by the vertical seal portions 281a and 281b and the horizontal seal portions 283a and 283b. In addition, a partition seal portion 282 is formed at the center of the two-pack bag 280, whereby the inner space of the two-pack bag 280 is divided into a first storage chamber 285a and a second storage chamber 285b. It is divided into.

  Referring again to FIG. 19, the film folding mechanism 210 is attached to the uppermost side of the packaging machine, and the sheet-like film 202 ′ drawn from a roll (not shown) is in a flat two-fold state. Is. The film 202 ′ that has passed through the film folding mechanism 210 has a fold-like crease on the left side in the figure, and the side edges of the film 202 ′ overlap on the opposite side.

  Each of the first vertical seal mechanism 220 and the second vertical seal mechanism 230 has a heater bar and a heater bar receiver (not shown) that sandwich the film 202 '. Then, by driving these vertical sealing mechanisms 220 and 230, both sides of the film 202 'are heat-sealed along the longitudinal direction of the film. Specifically, the vertical seal portion 281a (see FIG. 20) of the two-pack bag 280 is formed by the first vertical seal mechanism 220, and the vertical seal portion 281b is formed by the second vertical seal mechanism 230.

  The third vertical sealing mechanism 240 is disposed so as to be positioned between the two vertical sealing mechanisms 220 and 230 in the width direction (the horizontal direction in the drawing) of the film 202 ′. In Patent Document 1, the third vertical seal mechanism 240 is disclosed as a mechanism that forms an easy peel seal portion having lower seal strength than the vertical seal portions 281a and 281b.

  The charging nozzles 271 and 272 are for charging different types of fillers into the respective storage chambers in the tubular film 202 partitioned by the partition seal portion 282 as described above. The squeeze roller 250 divides the filler to form an empty filling portion 202a in the cylindrical film 202 by rotating while sandwiching the cylindrical film 202 into which the filler is charged. In the empty filling part 202a, the tubular film 202 is flattened flat, and the filling is not present. The horizontal sealing / cutting mechanism 260 includes a heater bar, a heater bar holder, a cutter, and the like, and heat seals (horizontal sealing) the empty filling portion 202a of the tubular film 202 in the width direction and cuts the heat sealing portion. This is a mechanism for separating the two-pack bag 280. In the two-pack bag 280 shown in FIG. 20, the portions thermally sealed by the lateral sealing / cutting mechanism 260 are lateral sealing portions 283a and 283b.

  In the two-pack bag packaging machine 201 configured as described above, the amount of the filling material to be put into the cylindrical film 202 is set to exceed the squeeze roller 250, and then the squeeze roller 250 is driven to divide the squeeze roller. Below 250, the inside of the cylindrical film 202 is filled with a filler, and there is almost no air. In this state, by forming the horizontal seal portions 285a and 285b with the horizontal seal / cutting mechanism 260, the two-pack bag 280 in which the filling material is sealed in a state in which the mixing of air is suppressed can be manufactured. .

Preventing air from being mixed in this way is particularly advantageous for packaging perishable fillings such as food. In addition, since the packaging machine 201 is configured to laterally seal the empty filling portion 202a that has been flattened, the occurrence of heat seal failure in the lateral seal portions 283a and 283b is also suppressed.
JP 2003-81356 A (FIGS. 18 and 19)

  However, when the two-pack bag packaging bag is manufactured using the vertical and filling machine as described above, the large two-pack bag packaging bag, regardless of the size of the packaging bag. The following problems may occur when manufacturing the product. That is, when a relatively large two-pack bag is manufactured such that the amount of the filled material is 500 g and 1000 g in total in the two storage chambers, when the filled material is put into the cylindrical film, FIG. And as shown in FIG. 22, the middle part of the cylindrical film 2 in each accommodation chamber 285a, 285b will be in the state which swelled toward the outer side (in the up-down direction of FIG. 22) by the dead weight of a filler. In some cases, as shown by the dotted lines and arrows on the lower side of FIG. 21, the packings in the storage chambers approach the central side (partition seal side) so as to approach each other, and accordingly, the vertical seal The portions 281a and 281b may be bent inward, and the periphery of the central portion of the horizontal seal portion 283a at the lower end of the tubular film 202 may be bent downward.

  As described above, the pair of squeeze rollers 250 in a state in which the tubular film 202 bulges outward, or in a state in which the tubular film 202 bulges with bending of the vertical seal portions 281a and 281b and the horizontal seal portion 283a. When trying to carry out the pinching operation by, wrinkles may occur in the tubular film 202 as illustrated in FIG. Such generation of wrinkles is not preferable because it causes a defect in a lateral seal portion formed in a subsequent process.

  Therefore, the object of the present invention is to produce a wrinkle on the tubular film during the squeeze operation even when the weight of the filled material is relatively heavy in the manufacture of the two-pack bag packaging bag that performs the squeeze operation. The object is to provide a method for producing a two-pack bag. Another object of the present invention is to provide a vertical filling and packaging machine that can satisfactorily carry out the above production method.

  In order to achieve the above object, the method for manufacturing a two-pack bag packaging bag of the present invention is to manufacture a two-pack bag packaging bag in which a filling material is enclosed in each of two storage chambers partitioned by a partition seal portion. A long sheet-like film is formed into a cylindrical shape so that both side edges overlap with each other, and the overlapping portion between the side edges is heat-sealed along the longitudinal direction of the film to longitudinally seal Forming the section, and heat sealing the opposed inner surfaces of the film at a predetermined distance from the vertical seal portion to form the partition seal portion in the same direction as the vertical seal portion And a step of charging the cylindrical film in which the vertical seal portion and the partition seal portion are formed into each of the storage chambers partitioned by the partition seal portion, and from the liquid level of the charged filler Down A step of sandwiching a portion of the cylindrical film located between a pair of squeeze rollers to divide the filling, and rotating the pair of squeeze rollers to form an empty filling part in the cylindrical film; Forming the empty filling portion in a method for manufacturing a two-pack bag, comprising a step of heat-sealing in the width direction of the tubular film to form a transverse seal portion for sealing the storage chamber Prior to the step, a pressing member in which the cylindrical film is disposed opposite to each other in both of the portion located above the pair of squeeze rollers and the portion located below the tubular film is used. Then, each of the storage chambers filled with the packing is gradually pushed and narrowed in the direction away from the vicinity of the partition seal portion from the vicinity of the partition seal portion. Is characterized in further comprising the step of the pre-flattened each accommodating chamber filling is turned.

  According to the above-described method for manufacturing a two-pack bag of the present invention, when sandwiching a cylindrical film filled with a pair of squeeze rollers, the cylindrical film is flattened using a pressing member above and below the squeeze rollers, respectively. Therefore, the cylindrical film is not wrinkled between the portion sandwiched by the upper pressing member and the portion sandwiched by the lower pressing member, that is, in the region sandwiched by the squeeze rollers. Even if the cylindrical film is sandwiched between the squeeze rollers, the generation of wrinkles can be suppressed. In particular, the sandwiching using the pressing member in the present invention is performed by gradually moving each of the storage chambers filled with the filler from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion (that is, the outside of the tubular film). The flattening of the tubular film is effective without causing wrinkles even when a relatively large amount of filler is charged and the tubular film swells. To be done.

  In the manufacturing method of the present invention, the step of forming the empty filling portion may include rotating the squeeze roller in a state where the pressing member on the upper side of the squeeze roller is closed. . Alternatively, before the squeeze roller is rotated, a pair of rectifying pressing plates are used above the pressing member on the upper side of the squeeze roller, and the cylindrical film loaded with the filler is directed downward from above. It may further include a step of flattening by gradually narrowing. Thus, if the cylindrical film is made flat above the squeeze roller during the rotation operation of the squeeze roller, the cylindrical film is supplied between the pair of squeeze rollers in a flat state. The generation of wrinkles associated with the operation is further suppressed. In particular, it is more preferable to use a pair of rectifying press plates to gradually push and narrow the tubular film downward, since the tubular film can be flattened in a state where wrinkles are difficult to enter.

  Further, in the manufacturing method of the present invention, the step of flattening each of the storage chambers into which the filler has been charged in advance is performed further below the pressing member on the lower side of the squeeze roller, and the partition seal portion of each of the storage chambers It may include closing the pressing member on the lower side in a state where the region on the side is pressed and narrowed. Thus, prior to closing the pressing member on the lower side, the area on the partition seal portion side of each storage chamber, in other words, the state around the central portion of the tubular film is pressed and narrowed, and in this state the pressing member is If it is closed, the sandwiching operation by the pressing plate can be performed more stably.

  Further, in the manufacturing method of the present invention, the step of forming the vertical seal portion includes forming the sheet-like film into two folds, and heat-sealing the film along the folds, whereby the vertical seal is formed. It may include forming another vertical seal part on the opposite side of the part. Thereby, a four-side seal type two-pack bag packaging bag is manufactured.

  Further, in the present invention, the inside is divided into two storage chambers by a partition seal portion formed in the same direction as the longitudinal direction of the film, in addition to the above-described one that forms a cylindrical film from the sheet-like film. It is applicable also to what uses a long cylindrical film.

  That is, the other two-pack bag manufacturing method of the present invention uses a long tubular film whose interior is partitioned into two storage chambers by a partition seal portion formed in the same direction as the longitudinal direction of the film. A method of manufacturing a two-pack bag packaging bag in which a filling material is sealed in each of the two storage chambers partitioned by the partition seal portion, wherein the packing material is filled in each of the storage chambers of the tubular film. And a portion of the cylindrical film located below the liquid level of the charged filler is sandwiched between a pair of squeeze members to divide the filler, and the cylindrical film is squeezed by the squeeze member. A step of forming an empty filling portion, a step of heat-sealing the empty filling portion in the width direction of the tubular film to form a lateral seal portion for sealing the accommodating chamber, and the empty filling portion. Craft to form Before, in both the part located above the squeeze member of the tubular film, and the part located below, both using the pressing member disposed opposite to the tubular film, Each of the storage chambers filled with the packing is preliminarily flattened by gradually pressing and narrowing each of the storage chambers filled with the packing from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion. And a process of performing.

  Even such a manufacturing method of the present invention is common in that the cylindrical film is flattened using the pressing members respectively above and below the squeeze roller, similarly to the above-described manufacturing method. A similar effect can be obtained in that the generation of wrinkles when the cylindrical film is sandwiched between the squeeze rollers is suppressed.

  Furthermore, the vertical filling and packaging machine of the present invention is a vertical filling and packaging machine for manufacturing a two-pack bag packaging bag in which a filling material is sealed in each of two storage chambers partitioned by a partition seal portion. A film folding mechanism for forming a long sheet-like film into a cylindrical shape so that both side edges overlap each other, and heat-sealing the overlapping part of the side edges of the film along the longitudinal direction of the film The vertical seal bar that forms the vertical seal portion, and the opposed inner surfaces of the film are heat-sealed at a predetermined distance from the vertical seal portion, and the partition in the same direction as the vertical seal portion A vertical seal mechanism having another vertical seal bar forming a seal portion, and a cylindrical film in which the vertical seal portion and the partition seal portion are formed, in a storage chamber partitioned by the partition seal portion. The two charging nozzles for charging the filling material and the cylindrical film are disposed opposite to each other, and the filling portion that is inserted into the cylindrical film with the cylindrical film interposed therebetween is divided and its state A pair of squeeze rollers for feeding the cylindrical film downward while forming an empty filling portion by rotating at a position, and the empty filling portion for heat sealing in the width direction of the cylindrical film to seal the accommodation chamber A horizontal seal mechanism having a horizontal seal bar that forms a horizontal seal portion of the container, and a compartment seal that is disposed above the pair of squeeze rollers and into which the filling material is charged, from the vicinity of the partition seal portion. An upper pressing mechanism including a pressing member disposed so as to oppose the cylindrical film in order to gradually press and narrow in a direction away from the vicinity of the portion, and the pair of squeeze rollers The cylindrical films are arranged opposite to each other so as to gradually push and narrow each of the storage chambers disposed below and filled with the filler from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion. A lower pressing mechanism including the pressed member. According to the packaging machine of this invention comprised in this way, the manufacturing method of the 2 liquid bag packaging bag of this invention which forms a cylindrical film from the said sheet-like film can be performed favorably.

  In the present specification, the production of the packaging bag means that the filling material put into the cylindrical film is sealed by the lateral seal portion, and is not necessarily packed from the cylindrical film. It does not include the process of cutting the bag.

  As described above, according to the present invention, in the manufacture of a two-pack bag that performs a squeeze operation, when sandwiching a cylindrical film filled with a squeeze roller, a cylinder is used using a pressing member above and below the squeeze roller. The flat film is flattened, and therefore the swelling of the tubular film is suppressed even when the weight of the filled material is relatively heavy, and the tubular film is wrinkled during the squeaking operation. As a result, a large two-pack bag can be manufactured satisfactorily. In particular, since the sandwiching operation of the tubular film using the pressing member is performed by gradually pushing down each of the storage chambers filled with the filler from the vicinity of the partition seal portion, the tubular film Can be effectively flattened.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, the whole structure of the two-pack bag packaging machine of this embodiment is demonstrated with reference to FIG. 1, FIG. FIG. 1 is a front view showing an embodiment of the two-pack bag packaging machine of the present invention, and FIG. 2 is a side view of the packaging machine of FIG.

  The two-pack bag packaging machine 1 shown in FIG. 1 and FIG. 2 feeds two different kinds of fillings from the two charging nozzles 91 and 92 into the cylindrical film 2 while feeding the cylindrical film 2 downward from above. The empty filling portion 2a is formed by the squeeze roller 50, and the empty filling portion 2a is heat-sealed (laterally sealed) and cut by the horizontal sealing / cutting mechanism 70 to obtain one two-pack bag 80. is there.

  As shown in FIG. 3, the two-pack bag 80 is a four-side-seal type packaging bag whose peripheral edge is heat-sealed by vertical seal portions 81a and 81b and horizontal seal portions 83a and 83b. Comparing into the first storage chamber 85a and the second storage chamber 85b by the part 82, for example, a comparison of storing 400 g of filler in the first storage chamber 85a and 600 g of packing in the second storage chamber 85b. The target size is large.

  Returning to FIG. 1 and FIG. 2 again, the two-pack bag packaging machine 1 first, like the conventional packaging machine as shown in FIG. 19, a film folding mechanism 10 for folding the sheet-like film 2x into two folds, A longitudinal sealing mechanism 20 that forms the tubular film 2 by heat-sealing (vertical sealing) the folded film 2x in the longitudinal direction, and a transport roller 30 for sandwiching the tubular film 2 and transporting it downward. And two injection nozzles 91 and 92 for charging the cylindrical film 2, a pair of squeeze rollers 50 for forming an empty filling portion 2 a in the cylindrical film 2, and horizontal sealing and cutting of the cylindrical film 2 As a characteristic configuration of the packaging machine 1, several features for suppressing the occurrence of wrinkles when the cylindrical film 2 is sandwiched between the squeeze rollers 50 are provided. The ironing roller unit 40 having the configuration, and a lateral deviation prevention mechanism 60 disposed thereunder. In addition, the shift prevention mechanism 60 is a structure (a shaping plate upper guide) for suppressing generation of wrinkles in a mechanism having a shaping plate that is conventionally known in this type of packaging machine and that holds the tubular film 2 from both sides. 64).

  Next, each of the above components will be described in order. The film folding mechanism 10, the vertical sealing mechanism 20, the conveying roller 30, the squeeze roller 50, and the horizontal sealing / cutting mechanism 70 are basically the same as those conventionally known for use in this type of vertical filling and packaging machine. Since it is a structure, the detailed description is partially omitted.

  The film folding mechanism 10 has a plurality of guide rollers and a plurality of guide plates that regulate the conveying direction of the film 2x, and the film 2x that has passed through the guide rollers is flattened by being fed while being guided by the guide plates. Folded into a folded state. Specifically, the film 2x has a mountain-like fold on the left side in the drawing, and the side edges of the film 2x are overlapped on the opposite side. The film folding mechanism 10 also has two pairs of pressing rollers 11 that sandwich both ends of the folded film 2x below the guide plate, whereby the feeding of the film 2x is guided. ing. In particular, the end of the film 2x can be creased by the pressing roller 11 on the left side of the drawing in FIG. 1, and the vertical sealing described later is favorably performed by the crease of the film 2x. .

  As shown in FIG. 4, the vertical seal mechanism 20 includes two pairs of vertical seal bars 21 and 22 that thermally seal (vertical seal) both ends of the film 2x folded in two along the film longitudinal direction. A total of three pairs of vertical seal bars 21 to 23 including a pair of vertical seal bars 23 disposed between the seal bars 21 and 22 are provided. In FIG. 4A, only the central vertical seal bar 23 is shown long, but this is not an essential difference, and since the vertical seal bars 21 to 23 have the same configuration, The one vertical seal bar 21 will be described as an example.

  As shown in FIG. 4B, the pair of vertical seal bars 21 are disposed to face each other with the film 2x interposed therebetween. Each vertical seal bar 21 is attached to the base 25 via a sliding bar 26, and can be moved forward and backward with respect to the film 2x. The vertical seal bar 21 is driven by a driving means such as a cylinder, for example, and is configured so as to sandwich the film 2x.

  Here, the heating means provided in the vertical seal bar 21 is not particularly limited as long as the film 2x can be heat-sealed. For example, the film 2x is heated and heat-sealed by applying ultrasonic waves. Alternatively, the film 2x may be heated and sealed with a heater or the like.

  As shown in FIG. 4A, a long hole 27a extending in the width direction (the left-right direction in the figure) of the film 2x is formed in the base 25, and the vertical seal bar 21 is inserted into the long hole 27a. It is attached to the base 25 by a bolt 27b. This mounting structure is the same for any of the vertical seal bars 21 to 23. Thus, a structure using a long hole is used, and the positions of the vertical seal bars 21 to 23 in the left-right direction can be adjusted. This is preferable in that it can be easily handled without complicated operations when manufacturing packaging bags of different sizes.

  In the vertical sealing mechanism 20 configured as described above, the film 2x is sandwiched between three pairs of vertical seal bars 21 to 23 and heat-sealed, so that the vertical seals corresponding to the vertical seal bars 21, 22, and 23 respectively. Portions 81a and 81b and a partition seal portion 82 are formed. In the description of the present embodiment, the film 2x in which the seal portions 81a, 81b, and 82 are thus formed is referred to as a “tubular film 2”.

  Next, the conveyance roller 30, the injection nozzles 91 and 92, and the squeeze roller 50 will be described with reference to FIGS. FIG. 5 is a diagram showing a configuration around the squeeze roller unit 40 of FIG. 1, FIG. 5 (a) is a front view thereof, and FIG. 5 (b) is a side view thereof. FIG. 6 is a front view showing the structure of the squeeze roller and its surroundings.

  As shown in FIG. 5, the packaging machine 1 includes three pairs of transport rollers 30 a, 30 b, and 30 c as the transport rollers 30. Each of the transport rollers 30a and 30b is disposed slightly inside the both end portions of the tubular film 2, and is configured to sandwich the vicinity of the vertical seal portions 81a and 81b shown in FIG. Further, the transport roller 30b is configured to sandwich the vicinity of the partition seal portion 82 shown in FIG. All the three transport rollers 30a to 30c are supported by the same support shaft. The cylindrical rollers 2 are conveyed downward by these conveying rollers 30a to 30c, which are arranged to face each other with the cylindrical film 2 therebetween, synchronously rotate in the direction of the arrow in FIG. As described above, the cylindrical film 2 can be stably conveyed by being configured to be conveyed by the three pairs of conveying rollers 30a to 30c. In particular, each of the conveying rollers 30a to 30c is a vertical seal mechanism. Since the seal portion formed by 20 or the vicinity thereof is sandwiched, the conveyance becomes more stable.

  As shown in FIG. 5A, each of the injection nozzles 91 and 92 is disposed between the adjacent conveyance rollers 30 a to 30 c, and the lower end of each nozzle is located below the conveyance roller 30. . The whole of the injection nozzles 91 and 92 is shown in FIG. 1. Both nozzles 91 and 92 extend in the vertical direction inside the tubular film 2 and are bent in the horizontal direction on the upper side of the packaging machine. And has a substantially inverted L shape. In addition, a sensor (not shown) for detecting the liquid level height of the filling material charged in the cylindrical film 2 is disposed around the lower end of the charging nozzles 91 and 92, details of which will be described later. However, the charging operation is performed based on the detection result of the sensor.

  As shown in FIG. 6, the squeeze roller 50 is rotatably supported at the lower ends of two arms 52 that rotate in the direction indicated by the arrow about the rotation shaft 51. Further, each squeeze roller 50 is configured to rotate in synchronization with the transport roller 30 described above. The pair of squeeze rollers 50 thus configured sandwiches the cylindrical film 2 into which the filler is charged and divides the filler, and the squeeze roller 50 itself rotates to squash the cylindrical film 2 flatly. It will be sent down.

  Next, the pressing plate member 58, the triangular rectifying plate 55, the upper honey-type pressing mechanism 110, and the lower honey-type pressing mechanism, which are provided to suppress the generation of wrinkles when the cylindrical film 2 is sandwiched between the squeeze rollers 50, 120 will be described.

  As shown in FIG. 6, the pressing plate member 58 is attached to the lower end side of each arm 52 so as to be positioned immediately above the squeeze roller 50. As shown in FIG. 7, the pressing plate member 58 is formed by bending a flat plate-like member so that the cross-sectional shape is substantially U-shaped, and the tip 58a side is an inclined surface. . Moreover, the length of the horizontal direction is formed by the width dimension larger than the width dimension of the cylindrical film 2 so that the cylindrical film 2 can be pressed over the full width. The pair of pressing plate members 58 configured in this manner is configured such that the tips 58a are close to or in contact with each other with the arm 52 closed. By providing such a pair of pressing plate members 58, the cylindrical film 52 is flattened just above the squeeze roller 50, and as a result, generation of wrinkles when sandwiched between the squeeze rollers 50 is suppressed. In addition, it is preferable to provide the pressing plate member 58 on the arm 52 in that a special driving means for moving the pressing plate member 58 is not required.

  The triangular rectifying plate 55 (rectifying pressing plate) is attached to each arm 52 one by one like the pressing plate member 58, and one triangular rectifying plate 55 is formed in two plate shapes as shown in FIG. The members 55a and 55b are superposed. The plate-like member 55a has a rectangular outer shape. On the other hand, the plate-like member 55b has a substantially triangular outer shape, and the apex on the upper side thereof is configured to correspond to the passage position of the section seal portion 82 formed on the tubular film 2 (FIG. 9 ( a)). The triangular rectifying plate shown in FIG. 8B shows a modification, and the triangular plate-like member 55c has a thickness that gradually decreases from the upper side toward the lower side.

  As shown in FIG. 6, the triangular rectifying plate 55 configured as described above is attached with the triangular plate-like members 55 b facing each other, and is attached to the arm 52 with each inclined at a predetermined angle. As a result, the gap in the horizontal direction between the triangular rectifying plates 55 is gradually narrowed downward while the arms 52 are closed. Thereby, the cylindrical film 2 into which the filler has been charged can be gradually pushed down from the top to the bottom, and flattening in this way is preferable because wrinkles do not easily enter the film.

  In addition, as can be seen from FIG. 9A, the positional relationship between the triangular current plate 55 and the injection nozzles 91 and 92 is such that the lower ends of the injection nozzles 91 and 92 are below the upper side of the rectangular plate-shaped member 55a. And it is comprised so that it may be located above the oblique side of the triangular plate-shaped member 55b.

  Next, the function of the triangular current plate 55 during operation of the packaging machine will be described with reference to FIG. Here, FIG. 9A is a view of the triangular rectifying plate 55 as viewed from the side. The triangular rectifying plate 55 is in a closed state, and a filling material is introduced into the tubular film 2. The state in which the liquid level is located above the triangular current plate 55 is shown. FIG.9 (b) has shown the cross-sectional shape of the cylindrical film 2 in each cutting line of Fig.9 (a).

  At the position of the cutting line A-A, the cylindrical film 2 into which the filler is charged is not constrained by the triangular rectifying plate 55, so that each storage chamber of the cylindrical film 2 swells in the vertical direction in the figure due to the weight of the filler. It becomes a state. At the position of the cutting line BB, due to the action of the triangular rectifying plate 55, the filling in the tubular film 2 is shifted to the outside in the left-right direction in the figure, and each storage chamber is in a state where the outside is further swollen. As described above, since the gap between the triangular rectifying plates 55 is gradually narrowed downward when the triangular rectifying plate 55 is closed, the cylindrical film 2 is formed on the lower side of the triangular rectifying plate 55. Gradually flattened toward the end, and finally, a flat state as shown in the sectional view of the cutting line CC is obtained.

  Gradually flattening the tubular film 2 while using the triangular rectifying plate 55 to move the filling to the outside, it is possible to flatten the tubular film 2 in a state where wrinkles are unlikely to occur. Is particularly preferable. If the cylindrical film 2 into which the filling material is charged is to be crushed only by the two flat plate-like members 55a without providing the triangular plate-like member 55b, the tubular film 2 is made of the filling material. Since it is in a state of being swollen by its own weight, as shown in FIG. 22, there is a possibility that wrinkles are generated in the tubular film 2 when it is crushed. Therefore, it is preferable that the triangular plate-like member 55b is provided as in the present embodiment, and the tubular film 2 is flattened while bringing the filler to the outside in terms of more effectively preventing wrinkles.

  Next, the upper honey-type pressing mechanism 110 and the lower honey-type pressing mechanism 120 provided above and below the squeeze roller 50 (see FIG. 5 or 6) will be described. Each of these mechanisms is for flattening the film by sandwiching the respective storage chambers of the tubular film 2 with a pressing plate. While the mechanism 110 is fixedly arranged, the lower presser mechanism 120 is different in that it is configured to move forward and backward with respect to the tubular film 2 (see the arrow direction in FIG. 5B). As shown in FIG. 5, both mechanisms 110 and 120 are supported by a support member 45 fixed to the packaging machine, and the upper honey-type pressing mechanism 110 is located above the squeeze roller 50 and the lower honey-type pressing mechanism 120. Is disposed below the squeeze roller 50.

  First, the upper honey-type pressing mechanism 110 will be described with reference to FIG. FIG. 10 is a view of the mechanism from above, showing a state in which each pressing plate is open.

  As shown in FIG. 10, the upper honey-type pressing mechanism 110 includes a pair of pressing plates 112a and 112b that sandwich the storage chamber on one side of the tubular film 2, and a pair of pressing plates 112c and 112d that sandwich the storage chamber on the other side. And four cylinders 119a to 119d for moving the respective pressing plates.

  Since all of the pressing plates 112a to 112d have substantially the same structure, the pressing plate 112a will be described below as an example. The pressing plate 112a is formed of a plate-like member having a flat surface (pressurizing surface) that contacts the tubular film 2, and one end side thereof is rotatably supported by the rotating shaft 111a. An arm tip of a cylinder 119a (for example, an air cylinder) is pressed near the end opposite to the one end supported by the rotating shaft 111a. Further, an urging member 117 such as a spring is attached at an intermediate position between the one end supported by the rotating shaft 111a and a portion where the arm of the cylinder 119a is pressed, and thereby the pressing plate 112a is pressed against the pressing plate 112a. A biasing force in the direction of opening the plate 112a is applied.

  With such a configuration, the pressing plate 112a is rotated in the direction of approaching the cylindrical film around the rotation shaft 111a while projecting the arm of the cylinder 119a while resisting the urging force of the urging member 117. On the other hand, when the arm of the cylinder 119a is retracted, the pressing plate 112a is rotated in the direction away from the tubular film around the rotation shaft 111a, that is, in the opening direction by the urging force of the urging member 117.

  The rotating shafts 111a to 111d that support the pressing plates 112a to 112d are separately and independently provided. The center point 113 surrounded by the four rotation shafts 111a to 111d is located at a position where the position in the horizontal direction in the figure is substantially the center of the partition seal portion 82 of the tubular film 2 (see, for example, FIG. 4). The position in the illustrated vertical direction is set to a position on the conveyance path of the tubular film 2.

  Although not shown in the drawing, in order to be able to adjust the positions of the pressing plates 112a to 112d in the horizontal direction in the drawing, as with the mounting structure of the vertical seal bar 21 shown in FIG. A base 115 that supports the rotating shafts 111a to 111d may be attached to the support member 45 via bolts. As a result, the bolts are loosened, the base 115 is moved in the horizontal direction in the figure, and the position of the base 115 relative to the support member 45 is adjusted, so that the positions of the rotating shafts 111a to 111d can be moved. Even in the case of manufacturing, it becomes possible to easily cope.

  The operation of the upper honey-type pressing mechanism 110 configured as described above will be described with reference to FIG. FIG. 11 is a schematic view of the honey-type pressing mechanism 110 as viewed from above, and shows a state in which the cylindrical film 2 filled with a filler is present between the pressing plates. FIG. 11A shows a state where the pressing plate is opened, and FIG. 11B shows a state where the pressing plate is closed.

  As shown in FIG. 11A, in a state where the pressing plate is opened, for example, on the housing chamber 85a side, the distance between the pressing plates 112a and 112b is from the partition seal portion 82 side toward the vertical seal portion 81a side. Since the housing chamber 85a gradually increases in size, the cross-sectional shape of the storage chamber 85a is also a shape that expands toward the outside, in other words, a shape in which the packing is brought to the outside. The second storage chamber 85b side has a similar cross-sectional shape. From this state, by driving each of the four cylinders 119a to 119d (see FIG. 10), the pressing plates are closed, and as a result, the tubular film 2 is crushed into a flat state.

  Thus, in the upper honey-type pressing mechanism 110, a pair of opposing pressing plates (for example, the pressing plate 112a and the pressing plate 112b) are used to vertically extend from the partition seal portion 82 side near the center of the tubular film 2 to the outside. Since the tubular film 2 is flattened so as to be gradually pressed and narrowed toward the seal portion 81a side, the wrinkle toward the outside is simply compared with a configuration in which the tubular film 2 is simply sandwiched between a pair of members parallel to each other. The stretching operation can be performed effectively.

  Next, the lower honeycomb type pressing mechanism 120 will be described with reference to FIG. FIG. 12 is a view of the mechanism as viewed from above, and shows a state in which the bases 125 supporting the pressing plates are close to each other and each pressing plate is opened.

  As shown in FIG. 11, the lower honey-type pressing mechanism 120 is similar to the upper honey-type pressing mechanism 110 described above, and includes a pair of pressing plates 122a and 122b that sandwich the storage chamber on one side of the tubular film 2, and the storage on the other side. It has a pair of pressing plates 122c and 122d that sandwich the chamber, and four cylinders 129a to 129d for moving each of the pressing plates. It is the same.

  In the lower spring type holding mechanism 120, two cylinders 129 a and 129 d on one side (upper side in the figure) are supported by the base 125 with the tubular film 2 interposed therebetween, and the base 125 is slidably supported by the support member 45. The two sliding bars 124 are supported. Accordingly, the entire unit 120a including the two cylinders 129a and 129d and the two pressing plates 122a and 122d can be moved forward and backward integrally with the tubular film 2. This forward / backward movement is performed using a cylinder 126 attached to the support member 45 and having an arm connected to the base 125 as a drive source. Further, the unit 120b including the two cylinders 129b and 129c and the pressing plates 122b and 122c on the opposite side (the lower side in the figure) across the cylindrical film 2 has the same configuration as the unit 120a on the one side.

  In the lower honey-type pressing mechanism 120 configured as described above, in addition to the operation similar to that of the upper honey-type pressing mechanism 110 as described with reference to FIG. The units 120 a and 120 b thus operated operate so as to take a state in which they are close to the tubular film 2 and a state in which they are separated from the tubular film 2.

  Next, the shift prevention mechanism 60 will be described with reference to FIG. FIG. 13A is a view of the shaping plate upper guide of the shift prevention mechanism as viewed from above, and FIG. 13B is a side view showing the configuration of the shift prevention mechanism, in a state where the shaping plate upper guide is closed. Show.

  As shown in FIG. 13, the shift prevention mechanism 60 includes a pair of shaping plates 62 that sandwich the tubular film 2, a pair of cylinders 61 that drive the plates, and a pair of shaping plate upper portions that are attached to the upper portions of the shaping plates 62. And a guide 64.

  The shaping plate 62 is made of a plate-like member having a flat pressing surface that comes into contact with the tubular film 2, and is configured to be close to the tubular film 2 by protruding the arm of the cylinder 61. . The pair of shaping plates 62 are configured such that a predetermined distance is provided between the shaping plates when the arms of the respective cylinders 61 are protruded, and the side portions of the cylindrical film 2 into which the filler is charged are arranged. Press. By pressing the side part of the cylindrical film 2 into which the filler is charged with the shaping plate 62 in this way, the swelling of the cylindrical film 2 in the left-right direction in the figure is restricted, and the filling of the filler in the cylindrical film 2 is controlled. Quantification is improved. In FIG. 13, the shaping plate 62 is shown in such a size as to press only the upper side of the side portions of the tubular film 2, but the side portions of the tubular film 2 can be pressed as a whole. You may be comprised with the member of various magnitude | sizes.

  The shaping plate upper guide 64 (guide member) is a member for pushing and narrowing the vicinity of the partition seal portion 82 of each storage chamber into which the filler is charged, and is attached above the shaping plate 62 via the support plate 63. ing. As shown in FIG. 13A, the shaping plate upper guide 64 includes an inclined portion 64a for sandwiching the storage chamber on one side of the tubular film 2, an inclined portion 64b for sandwiching the storage chamber on the other side, And a flat portion 64c between the inclined portions 64a and 64b. The flat part 64c is a part that protrudes most toward the tubular film 2, and is a part for sandwiching the vicinity of the partition seal part 82. The pair of shaping plate upper guides 64 is configured such that a predetermined gap (for example, 2 mm) is formed between the flat portions 64c with the shaping plate upper guides 64 closed. When the cylindrical film 2 filled with the filler is sandwiched between the pair of shaping plate upper guides 64, the periphery of the portion sandwiched between the flat portions 64c (the vicinity of the partition seal portion 82) is almost flat, and the tubular film It becomes a shape which gradually spreads toward the end portion side of 2. In other words, at the portion sandwiched between the pair of shaping plate upper guides 64, the filler is in a state of being shifted toward both end portions of the tubular film 2.

  If the lower honey-type pressing mechanism 120 described above is driven in a state where the periphery of the partition seal portion 82 is pressed and narrowed by the shaping plate upper guide 64 in this way, the clamping operation by the pressing plate of the mechanism 120 can be performed more stably. It will be selfish. That is, when the tubular film 2 has a cross-sectional shape as shown in FIG. 13A, the sandwiching operation of gradually pressing and narrowing from the partition seal portion 82 side by the pressing plate is stabilized. Further, when the filling material is put into the tubular film 2 with the shaping plate upper guide 64 closed, the filling material is thrown into the lower side of the shaping plate upper guide 64 so as to wrap around the outside. The impact of the fall when doing is suppressed.

  Next, the horizontal sealing / cutting mechanism 70 will be described with reference to FIG. 14. This mechanism is configured in the same manner as that disclosed in Japanese Patent Application Laid-Open No. 7-172403 previously filed by the present applicant. Therefore, detailed description thereof is omitted.

  As shown in FIG. 14, the horizontal sealing / cutting mechanism 70 includes a heater bar 77 and a heater that sandwich the empty filling portion 2a of the cylindrical film 2 in an opposed state and heat-seal (horizontal seal) the cylindrical film 2 in the width direction. It has a receiving bar 74 and a cutter holding bar 72 and a cooling bar 78 that sandwich the horizontal seal portion formed thereby and cut the seal portion. In the horizontal sealing / cutting mechanism 70, a first state where the heater bar 77 and the heater receiving bar 74 face each other as shown in FIGS. 14A and 14B, and a cutter holding bar as shown in FIG. 14C. 72 and the cooling bar 78 are configured to be in a second state in which they face each other. The drive source for this switching operation is cylinders 71 and 76 provided on both sides of the tubular film 2, and each unit including the cylinders 71 and 76 is not provided as shown in FIG. It is configured to be able to move forward and backward with respect to the tubular film 2 by the illustrated driving source.

  The horizontal sealing / cutting mechanism 70 configured as described above operates as follows. First, as shown in FIG. 14 (a), both cylinders 71 and 76 are brought close to each other with respect to the tubular film 2 whose conveyance is stopped in a state where the empty filling portion 2a is positioned between the horizontal sealing / cutting mechanism 70. I will let you. At this time, the heater bar 77 and the heater receiving bar 74 are opposed to each other. When both cylinders 71 and 76 are brought close to each other, as shown in FIG. 14 (b), the empty filling portion 2 a is pressurized and heated by the heater bar 77 and the heater receiving bar 74, and is laterally sealed in the width direction of the tubular film 2. Part is formed. Next, when the heat sealing is completed, as shown in FIG. 14C, the cylinders 71 and 76 are driven to switch the cutter holding bar 72 and the cooling bar 78 to face each other. As a result, the horizontal seal portion is pressurized by the cutter holding bar 72 and the cooling bar 78, the heat of the horizontal seal portion is cooled by the action of the cooling bar 78, and the cutter 73 in the cutter holding bar 72 is advanced. Thus, the seal portion is cut. Then, by retracting the cylinders 71 and 76, the holding of the tubular film 2 by the cutter holding bar 72 and the cooling bar 78 is released, and the cut one packaging bag 80 is dropped.

  According to such a horizontal sealing / cutting mechanism 70, since the heat seal and the heat-sealed portion can be cooled and cut while the conveyance of the tubular film 2 is stopped, the feed amount is shifted. It is possible to form and cut the horizontal seal portion without causing problems. Further, since the horizontal seal portion immediately after being heat-sealed can be cooled by the cooling bar 78, the operation speed is increased, and the seal strength of the horizontal seal portion is also improved.

  Operation | movement of the 2 liquid bag packaging machine 1 of this embodiment comprised as mentioned above is demonstrated with reference to FIGS.

  FIG. 15A is a diagram showing an initial state, which is a state immediately after one two-liquid bag 80 is manufactured in the previous series of steps. That is, a horizontal seal portion formed by the horizontal seal / cutting mechanism 70 is formed at the lower end of the tubular film 2, and the height of the horizontal seal portion is substantially the same as the horizontal seal / cutting mechanism 70. It has become. In addition, the pair of squeeze rollers 50 is in a closed state, and accordingly, the triangular rectifying plate 55 that moves in synchronization with the squeeze rollers 50 is also in a closed state (see FIG. 6). As described above, the squeeze roller 50 and the triangular rectifying plate 55 are in a closed state, so that the filler in the cylindrical film 2 exists only in the region above the squeeze roller 50, more specifically, the triangular shape. In the region between the rectifying plate 55 and the squeeze roller 50, the cylindrical film 2 is flattened, so that the filler is substantially present only above the region sandwiched by the triangular rectifying plate 55; It has become. In the tubular film 2, the filler is charged until the liquid level is above the triangular rectifying plate 55.

  In this initial state, the upper honey-type pressing mechanism 110 is in a state in which the two pairs of pressing plates 112a to 112d (see FIG. 10) are all closed. In addition, the lower honey-type pressing mechanism 120 is in a position where both of the units 120a and 120b (see FIG. 12) arranged with the cylindrical film 2 interposed therebetween are advanced toward the cylindrical film 2, and two pairs The pressing plates 122a to 122d are all open. Further, the shift prevention mechanism 60 has a pair of the shaping plate 62 and the shaping plate upper guide 64 closed (see FIG. 13), and the lateral sealing / cutting mechanism 70 is a cylinder 71, 76 (see FIG. 14). Is in a retreated state.

  Although not shown in FIGS. 15 to 17, vertical seal portions 81 a and 81 b and partition seal portions 82 (see FIG. 4) are formed on the tubular film 2 by the vertical seal mechanism 20. Hereinafter, only one nozzle 91 out of the two injection nozzles 91 and 92 will be described, but the two nozzles 91 and 92 perform the same input operation.

  First, as shown in FIG. 15 (b), from the initial state described above, by driving the upper honey-type pressing mechanism 110 and opening the pressing plates 112a to 112d, the sandwiching of the tubular film 2 is released, The filling material accumulated on the upper side can be dropped downward. In this state, when the pair of squeeze rollers 50 and the triangular rectifying plate 55 are integrally opened, the sandwiching of the cylindrical film 2 by the squeeze rollers 50 and the triangular rectifying plate 55 is released, and the filling material accumulated above the squeeze rollers 50 is removed. It falls to the lower side of the tubular film 2.

  Here, the shift prevention mechanism 60 remains closed, and the tubular film 2 is sandwiched between the shaping plate upper guides 64 as shown in FIG. Therefore, the filler flows into the cylindrical film 2 so as to wrap around from the outside. By charging the filler in this way, the impact of the drop of the filler at the time of charging is reduced.

  In order to replenish the filler that has been dropped to the lower side of the tubular film 2, the charging operation by the charging nozzle 91 is performed as follows. That is, the liquid level of the filling is detected by a sensor (not shown) provided around the lower end of the charging nozzle 91, and from the charging nozzle 91 until the liquid level reaches a predetermined height based on the detection result. Filling material is charged. The filling operation is not limited to that performed in the state shown in FIG. 15B, and may be performed as long as it is performed during a series of packaging bag manufacturing steps described below.

  Next, as shown in FIG. 15 (c), the upper honey-type pressing mechanism 110 and the lower honey-type pressing mechanism 120 are driven so as to be closed, and the cylindrical film 2 into which the filling material is charged by the pressing plates of the respective mechanisms. Is inserted. Here, as described with reference to FIG. 11, the sandwiching operation by the pressing plate is flattened by gradually pressing and narrowing the tubular film 2 from the central portion side to the outside of the tubular film 2. Therefore, it is possible to eliminate wrinkles effectively. The cylindrical film 2 is crushed in a wrinkle-free state between the upper and lower pressing mechanisms 110 and 120.

  It should be noted that the driving of the spring-type pressing mechanisms 110 and 120 may be performed simultaneously, or one of the mechanisms may be driven first. Further, in FIG. 15C, the cylindrical film 2 between the upper and lower pressing mechanisms 110, 120 is shown as having no filler, but in reality, some filler remains. It will be. However, even in that case, the film is in a wrinkle-free state by the operation of gradually flattening from the vicinity of the central portion of the pressing plate. Further, the driving of the lower honey-type pressing mechanism 120 in the above process (the sandwiching of the pressing plate 122) is performed in a state in which the shift prevention mechanism 60 is closed in advance, and as shown in FIG. Since the pair of pressing plates 122 are closed in a state in which the periphery of the central portion of the tubular film 2 is pressed and narrowed by the shaping plate upper guide 64, wrinkles are generated in the tubular film 2 when the pressing plates 122 are closed. There is also an advantage that it is difficult.

  Next, as shown in FIG. 16 (d), the portion made flat in the above process is sandwiched between a pair of squeeze rollers 50. At the same time, the tubular film 2 is also sandwiched between the pair of triangular rectifying plates 55 and the pair of pressing plate members 58.

  Next, as shown in FIG. 16 (e), as a preliminary step for sending the tubular film 2 downward, the shift prevention mechanism 60 is moved backward to release the tubular film 2 from being caught. Further, the lower honeycomb type pressing mechanism 120 is also moved to the retracted position. As a result, the tubular film 2 is not sandwiched by any mechanism in the region below the squeeze roller 50, and in the region above the squeeze roller 50, the triangular current plate 55, the pressing plate material 58, and the upper The mold is held between the mold pressing mechanisms 110.

  In addition, when sending the cylindrical film 2 downward, if there is a possibility that the upper honey-type pressing mechanism 110 may adversely affect the transport operation, the mechanism 110 may be opened in advance if necessary. Good.

  Next, as shown in FIG. 16 (f), the pair of squeeze rollers 50 are rotated, and the cylindrical film 2 is conveyed downward while forming an empty filling portion 2 a in which no filler is present. At this time, the conveying roller 30 (see, for example, FIG. 1) is also driven at the same time.

  Since this conveyance operation is performed in a state in which the cylindrical film 2 is sandwiched between the pair of triangular rectifying plates 55 and the pair of pressing plate members 58, the cylindrical film 2 is paired with a pair of squeeze rollers in a good flat state without wrinkles. Therefore, the generation of wrinkles at the portion sandwiched between the squeeze rollers 50 is suppressed. Further, in the region below the squeeze roller 50, as described above, the tubular film 2 is not sandwiched by any mechanism, so that it does not get caught by the lower honey-type pressing mechanism 120 or the slip prevention mechanism 60 and moves vertically downward. Move well.

  Here, the operation of the pair of triangular rectifying plates 55 will be described in detail with reference to FIG. In FIG. 18, only two pairs of plate-like members 55 b having a substantially triangular shape are drawn out of the two plate-like members 55 a and 55 b (see, for example, FIG. 8) constituting the triangular rectifying plate 55. Yes. As shown in the drawing, in a state where the tubular film 2 is sandwiched between a pair of triangular rectifying plates 55 (plate-like members 55b), the end portion side of the tubular film 2 is inclined by the dead weight of the filler. 56 swells slightly up on 56. When the tubular film 2 is pulled down in this state, the bulge of the film apparently moves outward along the slope 56. The movement of the bulge toward the outside in this way means that the tubular film 2 is pulled toward the outside, and this action makes the tubular film 2 free from sagging.

  As is clear from the above description, the tubular film 2 is conveyed while being rubbed against the inclined surface 56 of the plate-like member 55b, and the surface of the tubular film 2 is not damaged in this conveying step. Further, it is also possible to provide an R-shaped portion at a portion of the inclined surface 56 of the plate-like member 55b that comes into contact with the tubular film 2.

  Next, as shown in FIG. 17G, when the empty filling portion 2a is located between the horizontal sealing / cutting mechanism 70, the conveyance of the tubular film 2 by the squeeze roller 50 and the conveyance roller 30 is stopped. Next, as shown in FIG. 17H, the horizontal seal / cutting mechanism 70 is driven to form the horizontal seal portion in the empty filling portion 2a and to cut the seal portion. Next, as shown in FIG. 17 (i), by retracting the lateral sealing / cutting mechanism 70, one two-liquid bag 80 having two storage chambers 85a and 85b as shown in FIG. 3 is manufactured. . Thereafter, the lower hook-type pressing mechanism 120 is returned to the advanced position again, and the shift prevention mechanism 60 is also closed again, thereby returning the packaging machine 1 to the initial state shown in FIG.

  According to the method for manufacturing a packaging bag by the packaging machine 1 of the present embodiment as described above, when the cylindrical film 2 is sandwiched between the pair of squeeze rollers 50, as shown in FIG. The cylindrical film 2 above and below the squeeze roller 50 is flattened by the pressing mechanism 110 and the lower honey-type pressing mechanism 120, and the cylindrical film 2 is not wrinkled between the two honey-type pressing mechanisms 110, 120. Therefore, the generation of wrinkles when the cylindrical film 2 is sandwiched between the pair of squeeze rollers 50 is suppressed. In particular, both of the honey-type pressing mechanisms 110 and 120 use the pressing plates to move the respective storage chambers of the tubular film 2 filled with the filling from the vicinity of the partition seal portion 82 to the outer vertical seal portions 81a and 81b. Since the film is flattened so as to be gradually narrowed toward the side, even if a relatively large amount of filler is charged and the tubular film swells, the tubular film 2 does not generate wrinkles. Can be effectively flattened.

  Further, as shown in FIG. 16 (f), when the cylindrical film 2 is conveyed by the squeeze roller 50, in other words, when the empty filling portion 2 a is formed by the squeeze roller 50, Since the cylindrical film 2 is flattened by the pair of triangular rectifying plates 55, the cylindrical film 2 is supplied to the upper skirt type holding mechanism 110 and the squeeze roller 50 in a flat state. Alternatively, even when the empty filling portion 2a is formed in the state shown in FIG. 16 (f) with the upper spring-type presser mechanism 110 opened, the cylindrical film 2 remains flat with the action of the triangular current plate 55. 50. Therefore, in any case, since the flat roller 2 is supplied to the squeeze roller 50, the squeeze roller 50 prevents the occurrence of wrinkles when the cylindrical film 2 is conveyed. Further, when the tubular film 2 is conveyed while being sandwiched between the triangular rectifying plates 55, the triangular rectifying plate 55 is moved toward the outside while the packing is being moved toward the tubular film 2 as described with reference to FIGS. Is gradually flattened, so that wrinkles and sagging of the tubular film 2 can be satisfactorily removed.

  Further, as shown in FIG. 15 (c), when the pressing plate of the lower honey-type pressing mechanism 120 is closed, the shift prevention mechanism 60 is closed prior to that, and the partition seal portion of the tubular film 2 is closed. Since the periphery of 82 is pressed and narrowed, the pressing plate closing operation of the lower honey-type restraining mechanism 120 can be performed more stably.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above-described embodiment, the sheet-like film 2x is folded into a cylindrical shape by the film folding mechanism 10 and then the vertical seal portions 81a and 81b and the partition seal portion 82 are formed. Instead of this, a long film previously formed in a cylindrical shape may be used, and the partition seal portion 82 may be formed on the film. Further, the type of packaging bag to be manufactured is not limited to the four-side seal type, and may be a three-side seal type or a standing pack type. For example, the vertical seal portion 81b (see FIG. 4) may not be formed. In addition to the roller type such as the squeeze roller 50, the pair of squeeze rollers 50 may have, for example, a cylindrical film 2 as long as the squeeze roller 50 has a function of dividing the filling and a function of forming the empty filling portion 2a. Another type of squeeze member that performs a squeeze operation by moving the lip and moving relative to the film in that state may be used.

  In the above embodiment, as described with reference to FIGS. 6, 16 (f), and 18, when the triangular rectifying plates 55 are closed, the distance between the triangular rectifying plates facing each other ( Specifically, the distance between the plate-like members 55b facing each other is gradually narrowed downward, but the present invention is not limited to this. In other words, when the triangular rectifying plates are closed, the plate-like members 55b facing each other may be parallel to each other at a predetermined constant interval.

It is a front view which shows one Embodiment of the 2 liquid bag packaging machine of this invention. It is a side view of the packaging machine of FIG. It is a perspective view which shows the 2 liquid bag manufactured with the packaging machine of FIG. It is a figure which shows the structure of a vertical seal | sticker mechanism, Fig.4 (a) has shown the front view, FIG.4 (b) has shown the side view. It is a figure which shows the structure around a squeeze roller unit, Fig.5 (a) has shown the front view, FIG.5 (b) has shown the side view. FIG. It is a perspective view which shows the plate-shaped member provided just above the squeeze roller. It is a perspective view which shows the shape of the triangular current plate provided above the squeeze roller, FIG. 8 (a) is what was attached to the packaging machine of FIG. 1, FIG.8 (b) has shown the modification. It is a figure for demonstrating the function of a triangular rectifying plate, FIG.9 (a) is the figure which looked at the triangular rectifying plate from the side surface side, FIG.9 (b) is each cutting line of Fig.9 (a). Shows the cross-sectional shape of the tubular film in It is a top view which shows an upper honey-type press mechanism, and has shown the state which each press plate is open. FIG. 11A is a schematic view of the mechanism when viewed from the upper surface side in order to explain the operation of the honey-type pressing mechanism. FIG. 11A shows a state in which the pressing plate is opened, and FIG. Is shown. It is a top view which shows a lower honey-type holding | suppressing mechanism, and has shown the state which each press plate is open. FIG. 13A is a view of the shaping plate upper guide as viewed from above, and FIG. 13B is a side view showing the configuration of the shift prevention mechanism. It is a side view for demonstrating a structure and operation | movement of a horizontal seal | sticker / cutting mechanism. It is process drawing for demonstrating the manufacturing operation of the packaging bag by the packaging machine of FIG. It is process drawing for demonstrating the manufacturing operation of the packaging bag by the packaging machine of FIG. It is process drawing for demonstrating the manufacturing operation of the packaging bag by the packaging machine of FIG. It is a perspective view for demonstrating an effect | action of the triangular current plate shown in FIG. It is a front view which shows an example of the conventional 2 liquid bag packaging machine. It is a perspective view which shows an example of a 2 liquid bag packaging bag. It is a perspective view for demonstrating the problem which may arise when manufacturing a 2 liquid bag packaging bag with a big size. It is a typical top view for demonstrating the problem which may arise when manufacturing a two-pack bag with a large size.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 2 liquid bag packaging machine 2 Cylindrical film 2a Empty filling part 2x Film 10 Film folding mechanism 11 Press roller 20 Vertical seal mechanism 21, 22, 23 Vertical seal bar 25 Base 26 Sliding bar 27a Long hole 27b Bolt 30 Conveyance roller 40 Squeeze roller unit 45 support member 50 squeeze roller 51 rotating shaft 52 arm 55 triangular current plate 55a, 55b plate-like member 56 slope 58 pressing plate material 60 shift prevention mechanism 61 cylinder 62 shaping plate 63 support plate 64 shaping plate upper guide 64a, 64b inclined portion 64c Flat part 70 Horizontal seal / cutting mechanism 80 Two-pack bag packaging bag 81a, 81b Vertical seal part 82 Compartment seal part 83a, 83b Horizontal seal part 85a, 85b Storage chamber 91, 92 Injection nozzle 110 Upper honey-type pressing mechanism 111, 121 Rotating shaft 112 , 122 Pressing plate 115, 125 Base 117 Biasing member 119, 126, 129 Cylinder 120 Lower honey-type pressing mechanism 124 Sliding bar

Claims (10)

In order to manufacture a two-pack bag packaging bag in which a filling is enclosed in each of the two storage chambers partitioned by the partition seal portion,
A long sheet-like film is formed into a cylindrical shape so that both side edges overlap with each other, and the overlapping portion between the side edges is heat-sealed along the longitudinal direction of the film to form a vertical seal portion. Forming a step;
Heat sealing the opposed inner surfaces of the film at a position spaced apart from the vertical seal portion to form the partition seal portion in the same direction as the vertical seal portion; and
A step of introducing a filler into each of the storage chambers partitioned by the partition seal portion of the tubular film in which the vertical seal portion and the partition seal portion are formed;
A portion of the cylindrical film located below the liquid level of the charged filler is sandwiched between a pair of squeeze rollers to divide the filler and rotate the pair of squeeze rollers to empty the cylindrical film. Forming a filling portion;
In the method of manufacturing a two-pack bag, the step of heat sealing the empty filling portion in the width direction of the tubular film to form a lateral seal portion for sealing the storage chamber,
Before the step of forming the empty filling portion, the tubular film is opposed to the tubular film in both of the portion located above the pair of squeeze rollers and the portion located below. The filling material is charged by gradually pressing and narrowing each of the storage chambers filled with the filling material from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion using the arranged pressing member. A method for producing a two-pack bag packaging bag, further comprising a step of flattening each of the accommodation chambers in advance.   2. The method for producing a two-pack bag packaging bag according to claim 1, wherein the step of forming the empty filling portion includes rotating the squeeze roller while the pressing member on the upper side of the squeeze roller is closed. .   The step of forming the empty filling portion is performed by using a pair of rectifying pressing plates further above the pressing member on the upper side of the squeeze roller before the squeeze roller is rotated, and the cylindrical shape into which the filler is charged. The method for producing a two-pack bag packaging bag according to claim 1 or 2, further comprising a step of flattening by gradually narrowing the film from above to below.   The step of preliminarily flattening each storage chamber into which the filler has been charged is performed in a state where the area on the partition seal portion side of each storage chamber is pressed and narrowed further below the pressing member on the lower side of the squeeze roller. The manufacturing method of the 2 liquid bag packaging bag of any one of Claim 1 to 3 including closing the said press member of the lower side.   The step of forming the vertical seal portion is formed by folding the sheet-like film into two folds and heat-sealing the film along the crease so that another vertical seal is formed on the opposite side of the vertical seal portion. The manufacturing method of the 2 liquid bag packaging bag of any one of Claim 1 to 4 including forming a part. Using a long cylindrical film whose interior is partitioned into two storage chambers by a partition seal portion formed in the same direction as the longitudinal direction of the film, each of the two storage chambers partitioned by the partition seal portion A method for producing a two-pack bag with a filled material,
A step of charging a filler into each of the storage chambers of the tubular film;
A portion of the cylindrical film located below the liquid level of the charged filler is sandwiched between a pair of squeeze members to divide the filler, and an empty filling portion is formed in the cylindrical film by the squeeze member. And a process of
Forming a horizontal seal portion for heat-sealing the empty filling portion in the width direction of the tubular film to seal the accommodation chamber;
Before the step of forming the empty filling portion, the tubular film is disposed so as to face each other in both the portion located above and below the squeeze member of the tubular film. Using the pressed member, the packing material is charged by gradually narrowing each of the storage chambers in which the packing material has been charged from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion. And a method for producing a two-pack bag having a step of flattening each storage chamber in advance. A vertical filling and packaging machine for manufacturing a two-pack bag packaging bag in which a filling material is enclosed in each of two storage chambers partitioned by a partition seal portion,
A film folding mechanism for forming a long sheet-like film into a cylindrical shape so that both side edges overlap each other,
In the position where a predetermined interval is placed from the vertical seal bar, which forms a vertical seal portion by heat-sealing the overlapping portion of the side edges of the film along the longitudinal direction of the film, A vertical seal mechanism comprising heat seal between the opposed inner surfaces of the film, and another vertical seal bar forming the partition seal portion in the same direction as the vertical seal portion;
Two charging nozzles for charging a filling material into each of the storage chambers partitioned by the partition sealing portion of the cylindrical film in which the vertical seal portion and the partition sealing portion are formed;
The cylindrical film is disposed so as to be opposed to each other, and the cylindrical portion is sandwiched to divide the filling portion that is put into the cylindrical film, and the cylindrical portion is rotated while rotating to form the empty filling portion. A pair of squeeze rollers to send the film-like film downward,
A horizontal seal mechanism comprising a horizontal seal bar that forms a horizontal seal portion for heat-sealing the empty filling portion in the width direction of the tubular film to seal the storage chamber;
The cylindrical film is disposed above the pair of squeeze rollers and gradually presses and narrows each of the storage chambers filled with a filler from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion. An upper pressing mechanism including a pressing member disposed opposite to each other,
The tubular film disposed below the pair of squeeze rollers and gradually squeezes each of the storage chambers filled with a filler from the vicinity of the partition seal portion toward the direction away from the vicinity of the partition seal portion. A vertical filling and packaging machine having a lower pressing mechanism provided with a pressing member disposed to face each other. Each of the pressing members in the upper pressing mechanism and the lower pressing mechanism is
A pressing plate that presses each of the storage chambers in the width direction, wherein the pressing plate is rotatably supported at an end on the partition seal portion side by a rotating shaft, and the cylindrical film is centered on the rotating shaft. The vertical filling and packaging machine according to claim 7, wherein the container is pushed and narrowed by rotating toward the side. A pair of rectifying and pressing plates arranged to face each other between the tubular films above the upper pressing mechanism;
The pair of rectifying and pressing plates are configured to gradually push and narrow the tubular film from above to below in a state where the pair of squeeze rollers sandwich the tubular film. 8. The vertical filling and packaging machine according to 8.   A pair of guide members configured to be able to sandwich the tubular film below the lower presser mechanism, and when sandwiched, the packing material is placed on the side of the partition seal portion of the storage chamber. The vertical filling and packaging machine according to any one of claims 7 to 9, further comprising a pair of guide members formed in a shape capable of pressing and narrowing the region.

Images