JP2009137628A - Horizontal pillow packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the number of packages produced per unit time by a horizontal pillow packaging machine by producing the packages with a gusset on one side while a tubular film is continuously transported. <P>SOLUTION: This horizontal pillow packaging machine includes a bag forming device 23 for tubularly forming a strip-shaped film supplied continuously, a center seal device 26 for sealing the superimposed end 24a of a tubular film 24 tubularly formed, an end seal device 29 for sealing the tubular film in the width direction, and a gusset forming device 40 for forming a gusset on the side face of the tubular film before it is sealed by the end seal device. The end seal device includes a first end seal device 30 for forming a first end seal part with a wide seal and a second end seal device 32 for forming a second end seal part with a narrow seal, relative to the tubular film. The gusset forming device is provided on the second end seal device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a horizontal pillow packaging machine for manufacturing a packaging body in a form in which a gusset is formed on one ear portion (end seal portion) of a pillow packaging body.

  There are a wide variety of forms of packaging, and one of them is a packaging bag that can be hung and displayed. This type of package is, for example, one in which a hole for suspension is simply formed in one of the ears at both ends of the pillow package, or a synthetic resin film bag having a gusset fold as shown in Patent Document 1. There are packaging bags made up of a part and a header part. In the package disclosed in Patent Document 1, since products are hand-packed, it is very laborious. Thus, there is a vertical filling and packaging machine disclosed in Patent Document 2 and Patent Document 3 as an automated version of this hand-packing operation.

  The manufacturing method of the said package using the packaging machine disclosed by patent document 2 will separate the bag part which put the cut and was packaged from the packaging cylinder, if the top seal was given, and the lower end of this packaging cylinder is in a free state Next, the gusset is put into the lower end of the packaging cylinder by the back plate that hangs in pairs from the left and right of the cylinder and the gusset claw that enters from the outside, and then the bottom seal as the next bag is applied. ing. However, the vertical filling and packaging machine disclosed in Patent Document 2 has a problem that the manufacturing speed of the packaging bag is slow because the top seal and the bottom seal are formed separately rather than simultaneously.

Therefore, in order to solve the above problems, a vertical filling and packaging machine as disclosed in Patent Document 3 has been proposed. In the packaging machine disclosed in Patent Document 3, a folding guide is inserted into a portion above the separation line with respect to a rectangular tube in which a separation line that defines the lower end of the folding portion is formed in advance. A bottom seal and a top seal are formed simultaneously above and below the separation line.
Japanese Patent No. 3607541 Japanese Patent No. 2673246 JP 2006-347568

  However, the conventional apparatus described above has the following problems. That is, since the packaging machine of patent document 3 is a vertical filling packaging machine, it becomes intermittent operation and it is difficult to speed up. Further, in this vertical filling and packaging machine, a separating line applying means for forming a separating line in advance is required separately. Furthermore, it is difficult to match the upper and lower positions of the cutting knife that cuts the film and the two-folded cut, and if they do not match, a piece of film material is generated during cutting using the cutting knife. End up.

  Furthermore, when the technical idea disclosed in Patent Document 3 is applied to a horizontal pillow packaging machine on which the present invention is applied, there is the following problem, and the technical idea is simply Cannot be incorporated. That is, in the filling and packaging machine of Patent Document 3, the cylindrical film containing the article to be packaged is set so as to proceed downward, the lower end thereof is sealed in the lateral direction and closed, and the cylindrical film A package is filled and supplied. Then, the article to be wrapped falls and moves in the cylindrical film by its own weight and stays at the sealed portion at the lower end. Then, when the upper side of the packaged object is horizontally sealed and closed with respect to the cylindrical film, the tension is applied to the cylindrical film due to the weight of the packaged object, so that a separation line is provided at the folded portion. (Cutting) becomes easy. However, when this mechanism is used in a horizontal packaging machine, the film cannot be reliably cut because tension due to the weight of the article to be packaged cannot be applied to the cylindrical film.

  The present invention is a horizontal pillow package that can manufacture a package having a gusset on one side continuously, that is, while continuously transporting a cylindrical film, and can increase the number of units that can be manufactured per unit time. The purpose is to provide a machine.

  In order to achieve the above-described object, the horizontal pillow packaging machine according to the present invention is (1) a pillow that seals or cuts a predetermined portion while transporting a cylindrical film containing an article to be packaged in the horizontal direction. A horizontal pillow wrapping machine for manufacturing a packaging body, a means for forming a continuously supplied belt-like film into a cylindrical shape, and a center seal for sealing a polymerization end of the cylindrical film formed in the cylindrical shape An end seal device that is disposed downstream of the device and the center seal device and seals in the width direction of the tubular film, and a cutter means that cuts an end seal portion sealed by the end seal device in the lateral direction, Prior to sealing by the end seal device, both side surfaces of the tubular film in the advancing direction before and after the end seal portion are pushed inward by gusset claws. A gusset forming device for forming a gusset by forming a crease on the side surface of the tubular film, and the end seal device has a first end seal portion and a second end seal portion with respect to the tubular film. The gusset forming device forms gussets before and after the second end seal portion in accordance with the operation of the top sealer for generating the second end seal portion. . The cutter means may be incorporated in the end seal device or may be mounted as a separate device. In the embodiment, the means for forming the cylinder is realized by a bag making machine.

  (2) The end seal device includes a first top sealer for forming a first end seal portion and a second end seal portion for forming a second end seal portion on a rotary shaft disposed vertically with a tubular film interposed therebetween. 2 top sealers, and a process in which the upper and lower first top sealers sandwich the tubular film to form a first end seal portion as the rotating shaft rotates, and the upper and lower second top sealers And a process of forming a second end seal part by sandwiching a tubular film between each other, and the gusset forming device forms the first end seal part by the first top sealer. During processing, the tip of the gusset claw maintains a retracted position away from the side surface of the tubular film, and the second top sealer forms the second end seal portion during processing. Can as configured gusset nails according to the movement of the second top sealer to form a gusset at a predetermined position of the tubular film close / away from the sides of the tubular film.

  (3) The end seal device is of a type that revolves along a predetermined trajectory while maintaining a state in which the seal surfaces of the upper and lower top sealers face each other. The top sealer includes a main top sealer and a main top sealer. An auxiliary top sealer disposed on at least one of the front and rear sides of the film traveling direction. The auxiliary top sealer is configured to move up and down relatively with respect to the main top sealer. The sealing surface is flush and the first end seal part with a wide seal width is formed by sandwiching the tubular film between these two top sealers, and the auxiliary top sealer moves backward and the seal width is narrow only with the main top sealer. The step of forming the second end seal portion can be alternately performed, and the gusset forming device includes the main top sealer and the auxiliary top seal. In the step of forming the first end seal portion with the la, the step of forming the second end seal portion with only the main top sealer while maintaining the retracted position where the tip of the gusset claw is separated from the side surface of the tubular film In such a case, the gusset claw should be configured so as to form a gusset at a predetermined position of the tubular film by moving toward / separating from the side surface of the tubular film in accordance with the movement of the main top sealer. You can also. In the embodiment, the auxiliary top sealer is provided on both the front and rear sides of the main top sealer, but may be provided only on one side.

  (4) Based on the inventions of (2) and (3), the drive source of the gusset forming device may be configured separately from the drive source of the end seal device.

  (5) The end seal device includes a first seal device for forming a first end seal portion and a second seal device for forming a second end seal portion along the conveyance direction of the tubular film. The gusset forming device may be disposed in the vicinity of the second seal device, and the cutter means may be provided on the downstream side of the end seal device.

  (6) The end seal device includes a first top sealer for forming a first end seal portion and a second end seal portion for forming a second end seal portion on an endless chain arranged vertically with a tubular film interposed therebetween. 2 top sealers, and a process of forming a first end seal part by sandwiching a tubular film between the upper and lower first top sealers as the endless chain rotates, and upper and lower second top sealers The process of forming the second end seal portion by sandwiching the tubular film between them can be alternately performed.

  (7) The said end seal apparatus shall form the seal width of a 1st end seal site | part widely, and shall form the seal width of a 2nd end seal site | part narrowly. Of course, the seal widths of both end seal portions may be equal, or conversely, the second end seal portion forming the gusset may be wider.

  (8) It is good to provide the hole formation means which forms a hole in the formation area of the said 1st end seal part. The hole forming means may be mounted in a top sealer for forming a first end seal portion such as a first top sealer, but may be formed as a separate device.

  Since the gusset forming process by the gusset forming device approaches / separates the gusset claw toward the tubular film at an appropriate timing with respect to the operation of the end seal device, the second end seal portion (formation of the second ear portion of the embodiment) A gusset is formed around the area), and no gusset is formed around the first end seal portion (formation area of the first ear portion of the embodiment). And a 1st end seal site | part and a 2nd end seal site | part are alternately formed along a signal walk, and also these seal site | parts are cut | disconnected by a cutter means. Thereby, the pillow package body in which the gusset is formed on one side is continuously formed. Moreover, since it is a horizontal pillow wrapping machine, the cylindrical film is normally continuously conveyed without intermittent drive, and seals, gusset formation, cutting, etc. are performed during the conveyance, so the number of rotations is increased and unit time The number of manufactured items can be increased. In addition, when using a printing film for a packaging film, it is good to use the printing film printed symmetrically every other piece.

  By using the horizontal pillow packaging machine to perform the continuous operation so that the package can be manufactured, the speed can be increased compared to the conventional vertical filling machine packaging machine.

  FIG. 1 shows an example of a package 1 manufactured by the horizontal pillow packaging machine of the present embodiment. The package body 1 is formed by sealing the end opening portions of the bag-like main body 2 formed in a cylindrical shape by the center seal portion 4 to form first and second ear portions 3a and 3b, and sealing the inside. A package 18 is enclosed. In the present embodiment, the seal width d1 of the first ear portion 3a is set wider than the seal width d2 of the second ear portion 3b. Further, a hole 5 for suspension is provided in the central portion of the first ear 3a, and the hole 5 is used so that it can be suspended and displayed on a display shelf. Furthermore, on the second ear portion 3b side, the side surface of the film is pushed inward to form a gusset 6 with a crease on the side surface. Thereby, the packaging body 1 takes the form which the 1st ear | edge part 3a spreads and the 2nd ear | edge part 3b side was dented. The horizontal pillow packaging machine for manufacturing the package 1 having such a configuration adopts the following configuration.

  2 to 4 show a first embodiment of a horizontal pillow packaging machine according to the present invention. As shown in the figure, the pillow wrapping machine 10 of this embodiment includes a wrapping machine main body 11, a film supply device 12 that continuously supplies a belt-like wrapping film to the wrapping machine main body 11, and a wrapping machine main body 11. And a packaged article conveying and supplying device 13 for supplying the packaged article 18 to the packaging machine body 11 at predetermined intervals.

  The packaged article transport and supply device 13 includes a front and rear sprocket 15 (shown only in the front in the traveling direction in the figure), an endless chain 16 spanned across the plurality of sprockets 15, and a predetermined pitch on the endless chain 16. It is comprised with the several pushing finger | toe 17 attached for every. Thereby, when the pushing finger 17 abuts on the rear surface of the article to be packaged 18, the article to be packaged 18 also moves forward with the movement of the pushing finger 17.

  The film supply device 12 links the output of a driving motor (not shown) such as a servo motor, which is not shown, to the original roll 20 wound up in a roll shape. Supplying to the packaging machine body 11 at a constant speed while appropriately controlling the rotation speed. Various rollers 22 (only one is shown in the figure) are arranged at predetermined positions from the original fabric roll 20 to the packaging machine body 11, and the belt-like film 21 fed from the original fabric roll 20 is hung on the rollers 22. By being passed, it is guided to the packaging machine body 11 through a predetermined path. Of course, it is not always necessary to link the drive motor to the original roll 20, and a feed roller may be provided on the transport path of the belt-like film 21 and pulled out.

  The packaging machine main body 11 includes a bag making machine 23 for bag-making the supplied belt-like film 21 into a cylindrical shape, a pinch roller 25 and a center seal device 26 arranged on the downstream side of the bag making machine 23, and a center seal thereof. A belt conveyor 27 that is disposed on the downstream side of the device 26, conveys the tubular film 24, an upper holding belt 28 that is disposed above the belt conveyor 27, and an end seal device 29 that is disposed on the downstream side of the belt conveyor 27. And a cutter device 36 disposed on the downstream side of the end seal device 29, and a carry-out conveyor 37 disposed on the downstream side of the cutter device 36.

  The bag-making device 23 allows the side film edges 21 of the belt-like film 21 to contact (polymerize) with each other by passing the belt-like film 21 continuously supplied from the film supply device 12, and has a cylindrical shape. A bag is placed on the film 24. Further, the articles to be packaged 18 that are sequentially supplied from the article transporting and supplying apparatus 13 to the packaging machine body 11 are inserted into the bag making machine 23. Thereby, the articles to be packaged 18 supplied to the bag making machine 23 are arranged in the cylindrical film 24 at predetermined intervals.

  The pinch roller 25 is rotated while sandwiching the film polymerization end 24a (both side edge portions of the belt-like film 21) of the tubular film 24 formed in a tubular shape through the bag making machine 23 from both sides with a predetermined force. Thus, the belt-shaped film 21 is pulled out while applying a predetermined tension.

  The center seal device 26 seals the film polymerization end 24a of the polymerized cylindrical film. That is, the center seal device 26 heat-seals by heating while sandwiching the film overlapping end 24a from both sides with a predetermined force.

  The upper restraining belt 28 is disposed in the immediate vicinity of the upstream side of the end seal device 29, and prevents the packaged object 18 in the tubular film 24 from being lifted upward so that it can be conveyed while maintaining a horizontal state. ing.

  The end seal device 29 seals the tubular film 24 in a direction orthogonal to the traveling direction, that is, in a transverse direction. The film portion to be sealed is a predetermined position between the front and back packages 18.

  The cutter device 36 cuts the end seal portion sealed by the end seal device 29 in the lateral direction. Thereby, the head part of the cylindrical film 24 is isolate | separated from the subsequent by passing the cutter apparatus 36, and the package 1 is manufactured.

  In this embodiment, the end seal device 29 uses a double box motion type seal device. A first end seal device 30 having a wide seal width is disposed on the upstream side, and a second end seal device 33 having a narrow seal width is disposed on the downstream side. A conveyor belt conveyor 32 is disposed on the downstream side of each end seal device 30, 33, and stably transports to the next-stage device (second end seal device 33, cutter device 36).

  The first end seal device 30 includes a top sealer 31 that is vertically opposed to each other with the tubular film 24 interposed therebetween, and maintains a state in which the seal surfaces of both the top sealers 31 are opposed to each other with a predetermined trajectory. It is designed to revolve. The predetermined trajectory moves forward for a certain period at the same speed in synchronization with the movement of the tubular film 24 while maintaining a state where the predetermined portion of the tubular film 24 is sandwiched between the top sealers 31, and thereafter The sealer 31 separates and moves backward (moves in a direction opposite to the moving direction of the tubular film 24) along a path that does not interfere with the packaged object 18 and the like, and returns to a position where the tubular film 24 is sandwiched. Further, the top sealer 31 of the first end seal device 30 is provided with a cutter means for forming a circular hole at the central portion of the seal surface. For example, the upper top sealer 31 is formed with a circular protruding blade portion, and the lower top sealer 31 is formed with a hole for receiving the blade portion so that the cutter means is positioned between the two. A hole portion 5 is formed by punching a film portion to be formed, or a flat receiving surface (receiving blade) for receiving the blade portion is provided on the sealing surface of the lower top sealer 31 and located between the two. The hole 5 is formed by cutting (cutting out) the film portion into the shape of the blade portion. In addition, the shape of the blade portion is circular, so that the first ear portion 3a is formed with a hole 5 that is cut out in a circular shape. The shape of the blade portion is, for example, an annular shape such as a C-shape. It is good also as the state which left the part and left the punched-out part without isolate | separating from the 1st ear | edge part 3a.

  The second end seal device 33 includes a top sealer 34 that is vertically opposed to each other with the tubular film 24 interposed therebetween, and maintains a state in which the seal surfaces of both the top sealers 34 face each other with a predetermined locus. It is designed to revolve. The predetermined trajectory moves forward for a certain period at the same speed in synchronization with the movement of the tubular film 24 while maintaining a state in which the predetermined portions of the tubular film 24 are sandwiched by both top sealers 34, and then both tops The sealer 34 moves away and moves backward (moves in a direction opposite to the moving direction of the tubular film 24) along a path that does not interfere with the packaged object 18 and the like, and returns to a position where the tubular film 24 is sandwiched. Thus, the basic mechanism can adopt the same configuration as the first end seal device 30. However, the top sealer 34 of the second end seal device 33 is not provided with a cutter means for forming a circular hole in the seal surface with respect to the film. Further, the second end seal device 33 is different in that the seal width of the seal surface of the top sealer 34 is narrowed, and the second end seal device 33 is also different in that a gusset forming device 40 is provided.

  The gusset forming device 40 includes gusset claws 41 located on both side surfaces of the tubular film 24 and a drive mechanism (not shown) for moving the gusset claws 41. The tip 41a of the gusset claw 41 is formed in a bifurcated shape. The gusset claw 41 is connected to both the top sealers 34, and moves forward and backward integrally while maintaining a desired position in the height direction.

  Further, the gusset claw 41 can move in a direction approaching or separating from the side surface of the tubular film 24, and the portion of the tubular film 24 in which the packaged object 18 is stored is passing. As shown in FIG. 3, the tip 41 a is located at a retracted position further outside the side surface of the tubular film 24. Then, as shown in an enlarged view in FIG. 4, when the relative positions are such that the articles to be packaged 18 exist before and after the top sealers 34 and only the tubular film 24 exists between the top sealers 34. Further, each gusset claw 41 moves toward the inner side (tubular film side). And the front-end | tip 41a contacts the side surface of the cylindrical film 24, and pushes it inward, The gusset (fold) 6 as shown in the figure is formed in the side surface of the cylindrical film 24. In this state, the top sealer 34 is set to enter between the bifurcated tip 41a of the gusset claw 41.

  This gusset claw 41 is linked to a drive source for driving a top sealer of a box motion type end seal device via a predetermined power transmission mechanism, such as a gusset device disclosed in JP-A-2001-114203. By doing so, it can be moved as described above. Of course, the drive mechanism is not limited to that disclosed in the publications exemplified, and various drive mechanisms can be used. Further, a drive source is prepared separately from the drive source of the top sealer, You may make it move based on the motive power obtained from the drive source prepared separately. This type using another drive source will be described later.

  Next, the operation of the horizontal pillow packaging machine 10 of the present embodiment will be described. First, the film supply device 12 continuously supplies the belt-like film 21 wound up on the raw fabric roll 20 to the bag making machine 23. The supplied belt-like film 21 is made into a cylindrical shape when passing through the bag making machine 23. On the other hand, the article to be packaged 18 conveyed at predetermined intervals from the article to be packaged conveyance supply device 13 is supplied into the bag making machine 23. As a result, when the article to be packaged 18 passes through the bag making machine 23, the article to be packaged 18 is stored in a cylindrical film 24 that is trimmed into a cylindrical shape at predetermined intervals. It is conveyed together with the tubular film 24 that has been bagged. Then, the belt-like film formed into a cylindrical shape passes through the center seal device 26, whereby the side edge portions 21a are sealed (becomes the center seal portion 4) to become the cylindrical film 24, and the first end seal is formed. Device 30 is reached.

  The tubular film 24 containing the packaged object 18 passes through the first end seal device 30, so that the top sealer 31 has a predetermined film portion of the tubular film 24 (the front and rear packaged objects 18 do not exist). By moving forward for a certain period while sandwiching the portion), the part is sealed and the first ear 3a is formed. Further, in the first end seal device 30, the sealing process is executed once every two articles to be packaged 18 pass.

  Further, the tubular film 24 moves forward, reaches the second end seal device 33 in the next stage, and is the film portion of the tubular film 24 where the front and back objects 18 are not present, and is the first end seal device 30. The film portion that has not been sealed passes through the second end seal device 33. When passing, the gusset claw 41 first pushes a predetermined portion of the side surface of the tubular film 24 inward, and the top sealer 34 sandwiches and seals the pushed film portion in this state (see FIG. 4). ). Thereby, the 2nd ear | edge part 3b in which the gusset 6 was formed is formed. Thereby, as shown in FIG. 3, the 1st, 2nd ear | edge parts 3a and 3b are formed alternately.

  Then, each end seal part (ear part 3a, 3b) formed by both the end seal devices 30 and 33 is cut in the lateral direction by the cutter device 36, so that the cylindrical object in which the article to be packaged at the tip is stored. The film portion is separated from the subsequent cylindrical film, and the package 1 is manufactured. In the package 1 manufactured in this manner, one first ear 3a is wide (no gusset) and a hole 5 is formed in the center, and the other ear 3b is formed with a gusset 6. It becomes.

  5 and 6 show a horizontal pillow packaging machine according to a second embodiment of the present invention. In the present embodiment, the configuration of the end seal device 50 (including the gusset forming device 42) is different from that of the first embodiment, and other configurations are the same. Therefore, hereinafter, the different end seal devices 50 will be described.

  In the present embodiment, the end seal device 50 uses a double rotary seal device. A first end seal device (label sealer) 51 having a wide seal width is arranged on the upstream side, and a second end seal device (normal width sealer) 52 having a narrow seal width is arranged on the downstream side.

  The 1st end seal device 51 attaches one top sealer 51a to rotating shaft 51b arranged up and down on both sides of cylindrical film 24, and rotates it synchronously. As a result, each time the rotating shaft 51b makes one rotation, the top sealers 51a come into contact with each other once at the tip sealing surface. At that time, the tubular film 24 is sandwiched with a predetermined force from above and below and heated to heat. A first end seal portion that is sealed to become the first ear portion 3a is formed.

  Further, the seal width of the sealing surface of the top sealer 51a of the first end seal device 51 (the length along the traveling direction of the tubular film) is set to be wide, and the top sealer 31 of the first end seal device 30 Similarly, a cutter means (hole forming means) for forming the hole 5 of the first ear 3a is provided at the central portion.

  The second end seal device 52 attaches one top sealer 52a to each of the rotating shafts 52b arranged above and below the tubular film 24 and rotates them in synchronization. As a result, each time the rotating shaft 52b rotates once, the top sealers 52a come into contact with each other once at the tip seal surface. At that time, the tubular film 24 is sandwiched with a predetermined force from above and below, heated and heated. A second end seal portion that is sealed to become the second ear portion 3b is formed. The seal width of the seal surface of the top sealer 52a of the second end seal device 52 (length along the traveling direction of the tubular film) is narrower than the seal surface of the top sealer 51a of the first end seal device 51. Is set.

  Further, a gusset forming device 42 is provided upstream of the second end seal device 52 in the traveling direction. The gusset forming device 42 includes gusset claws 43 located on both sides of the cylindrical film 24 and a drive mechanism (not shown) that moves the gusset claws 43. The tip 43a of the gusset claw 43 of this embodiment is formed in a single bar shape. The gusset claw 43 can move in a direction approaching or separating from the side surface of the tubular film 24, and the portion of the tubular film 24 in which the packaged object 18 is stored is passing. As shown in FIG. 6, the tip 41 a is located at the retracted position further outside the side surface of the tubular film 24. When the relative positional relationship is such that only the tubular film 24 exists between the top sealers 34 (the packaged object 18 does not exist), the gusset claw 43 moves inward (tubular film side). . And the front-end | tip 43a contacts the side surface of the cylindrical film 24, and pushes it inward, The gusset (fold) 6 as shown in the figure is formed in the side surface of the cylindrical film 24.

  According to the gusset forming device 42 of the present embodiment, the gusset claw 43 does not move in the front-rear direction along the traveling direction of the tubular film 24, unlike the zette forming device 40 of the first embodiment. It moves toward and away from the tubular film 24 at the position. And if the gusset nail | claw 43 moves toward the cylindrical film 24 at the predetermined timing as mentioned above and pushes the side surface of the cylindrical film 24 inward, it will maintain the state for a fixed time. Then, since the cylindrical film 24 moves forward in the meantime, as a result, as shown in FIG. 6, the gusset 6 is formed in the cylindrical film 24 over the predetermined area in the front-back direction.

  The intermediate portion in the front-rear direction where the gusset is formed is sandwiched and sealed by the top sealer 52a of the second end seal device 52. Thereby, the 2nd ear | edge part 3b provided with the gusset 6 is formed. Since the seal surface of the top sealer 52a moves on a circle having a predetermined radius, the gusset claw 42 is set to be located outside the movement locus so as to avoid interference with the top sealer. Yes.

  And the end seal site | part formed with both the end seal apparatuses 51 and 52 is cut to a horizontal direction with the cutter apparatus 36 of a back | latter stage, and the package 1 is manufactured. In addition, since another structure and an effect are the same as that of embodiment mentioned above, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted.

  7 to 9 show a horizontal pillow packaging machine according to a third embodiment of the present invention. Also in this embodiment, compared with each embodiment, the configuration of the end seal device 60 (including the gusset forming device 70) is different, and the other configurations are the same. Therefore, the different end seal device 60 will be described below.

  The end seal device 60 according to the present embodiment is a box motion type and is divided into a top sealer, and one end seal device 60 alternately performs end seals having different seal widths. In other words, the top sealer of the end seal device 60 has the auxiliary top sealers 62 arranged on both sides of the narrow main top sealer 61 in the film traveling direction. The auxiliary top sealer 62 is configured to be movable up and down relatively with respect to the main top sealer 61, and revolves along a predetermined path integrally with the main top sealer 61 (lifts up and down with respect to the tubular film 24. And movement in the front-rear direction).

  When the auxiliary top sealer 62 is moved up and down relatively with respect to the main top sealer 61 so that the seal surface is flush as shown in FIG. 9A, a label sealer with a wide seal width is obtained. A function similar to that of the first end seal device 30 is exhibited, and a first end seal portion that becomes the first ear portion 3a can be formed.

  On the other hand, the auxiliary top sealer 62 is moved up and down relative to the main top sealer 61 in the opposite direction to the above, and the sealing surface of the auxiliary top sealer 62 is sealed as shown in FIG. 9B. When the tubular film 24 is sandwiched from above and below, the main top sealer 61 is not in contact with the film. Thereby, the function similar to the 2nd end seal device 33 mentioned above is exhibited, and the 2nd end seal part used as the 2nd ear part 3b with a narrow seal width can be formed.

  Therefore, every time the auxiliary top sealer 62 is end-sealed, the auxiliary top sealer 62 is moved up and down alternately with respect to the main top sealer 61, so that a wide first end seal portion ( The first ear portion) and the narrow second end seal portion (second ear portion) can be alternately formed. Note that a mechanism for moving the auxiliary top sealer 62 up and down relatively can be realized by using a mechanism of a heat seal device disclosed in Japanese Patent Application Laid-Open No. 2004-189286, for example.

  Further, a circular cutter means formed at the center of the seal surface of the main top sealer 61 is linked to a mechanism for moving the auxiliary top sealer 62 up and down relatively. Thereby, in a state where the sealing surface of the auxiliary top sealer 62 and the sealing surface of the main top sealer 61 are flush with each other, the cutter means can project from the sealing surface to form the hole 5. On the contrary, in a state where the seal surface of the auxiliary top sealer 62 is retracted from the seal surface of the main top sealer 61, the cutter means (hole forming means) moves backward from the seal surface of the main top sealer 61, and the hole The part is not formed. Therefore, a hole can be formed only on the first ear portion 3a side having a wide seal width.

  Furthermore, in this embodiment, the end seal portions (first ear portion 3a and second ear portion 3b) having different seal widths are alternately formed by one end seal device 60. It is necessary to operate so as to form a gusset when forming the two end seal portion (second ear portion 3b) and not to form a gusset when forming the first end seal portion (first ear portion 3a). . That is, a normal gusset forming apparatus forms a gusset every time the top sealer meshes once and end-seals. In this embodiment, the gusset is formed every other time.

  In order to achieve such a configuration, for example, a drive source that reciprocates the gusset claw 71 inward can be configured by a drive source that is different from the drive source that revolves the top sealer. Thereby, since the gusset forming device 70 can be operated independently of the revolving movement of the top sealer, the revolving movement of the top sealer for forming the first end seal portion (first ear portion) is performed. When the top sealer revolves to form the second end seal portion (second ear), the gusset claw 71 is temporarily stopped in a state where the gusset claw 71 is retracted to the side retracted position of the tubular film 24. The gusset 6 can be formed in the vicinity of the second ear portion 3b by reciprocating the gusset claw 71 in synchronization with the movement.

  Specifically, this can be realized by configuring as shown in FIGS. 10 to 12, for example. First, prior to describing the configuration of the gusset forming device 70, the end seal device 60 and the conveyor devices disposed before and after the end seal device 60 will be described. As described above, in the end seal device 60, the main and auxiliary top sealers 61 and 62 having a predetermined relative positional relationship revolve around a predetermined locus, and this has the following configuration. That is, the main and auxiliary top sealers 61 and 62 are attached to the sealer mounting base 63, and the sealer mounting base 63 aligns the cam floors 63a provided on both side ends thereof in the cam grooves 64 of the plate cam. As a result, the sealer mounting base 63 revolves along the shape (trajectory) of the cam groove 64. Therefore, the main and auxiliary top sealers 61 and 62 attached to the sealer mounting base 63 also revolve and follow them. To do.

  Further, the end of the belt conveyor 27 on the end seal device 60 side is supported by a first conveyor belt frame 68a, and the first conveyor belt frame 68a cooperates with the lower sealer mount 63 via a cam mechanism. Basically, the lower sealer mounting base 63 is moved in the front-rear direction following the forward / backward movement of the lower sealer mounting base 63, and the lower sealer mounting base 63 is further moved back and forth following the vertical movement of the lower sealer mounting base 63. It is located above the main and auxiliary top sealers 61, 62 on the side and covers or opens part of it. A specific mechanism for performing such an operation is as follows.

  That is, first, a vertically long guide cam plate 66a is attached to a predetermined position on the front end side of the first conveying belt frame 68a via a flat connecting plate rate 67a. A predetermined pattern of cam grooves extending in the vertical direction is formed in the guide cam plate 67a. The cam groove includes a first cam groove provided to extend in a vertical direction at a lower portion of the guide cam plate 67a, a third cam groove provided to extend in a vertical direction at an upper portion of the guide cam plate 67a, A second cam groove provided so as to extend in an oblique direction connecting between the cam grooves. The third cam groove is set at a position closer to the lower sealer mounting base 63 side than the first cam groove.

  Further, the lower sealer mounting base 63 is connected with a mounting piece 65a on the side surface (rear side in the traveling direction), and the cam floor 66a mounted on the upper end of the mounting piece 65a is linked to the cam groove. . Accordingly, the attachment piece 67a and the cam floor 66a move up and down following the vertical movement of the lower sealer mounting base 63. Therefore, when the lower sealer mounting base 63 moves down, the cam floor 66a is positioned in the first cam groove, and when the lower sealer mounting base 63 moves up, the cam floor 66a is positioned in the third cam groove. To do. In the intermediate movement, the cam floor 66a moves in the second cam groove. Since the first cam groove is located at a position farther from the lower sealer mounting base 63 than the third cam groove, when the cam floor 66a is located in the first cam groove, the first conveyance is performed. The belt frame 68a is positioned close to the sealer mounting base 63 side.

  The end of the carry-out conveyor 33 on the end seal device 60 side is supported by a second conveyor belt frame 68b, and the second conveyor belt frame 68b is linked to the lower sealer mount 63 via a cam mechanism, It moves in the front-rear direction following the forward-backward movement of the lower sealer mount 36b. However, unlike the belt conveyor 27, the carry-out conveyor 33 is positioned above the lower main and auxiliary top sealers 61 and 62 by moving back and forth following the vertical movement of the lower sealer mounting base 63. Do not cover or open. This is because a mechanism for driving the gusset claw 71 is provided on the carry-out conveyor 33 side, so that it does not interfere with the mechanism. Specifically, it is as follows.

  First, a vertically long guide cam plate 66b is attached to a predetermined position on the front end side of the second transport belt frame 68b via a flat connecting plate 67b. A cam groove extending in the vertical direction is formed in the guide cam plate 66b. Unlike the guide cam plate 66a, the cam groove has a shape that extends in a straight line up and down.

  On the other hand, a mounting piece 65a is connected to the side surface (front side in the traveling direction) of the lower sealer mounting base 63, and the cam floor 66b attached to the lower end of the mounting piece 65b is formed in the cam groove of the guide cam plate 66a. Connect. As a result, the attachment piece 65b and the cam floor 66b move up and down following the up and down movement of the lower sealer mount 63.

  By adopting such a configuration, the first conveyor belt frame 68a and the second conveyor belt frame 68b are connected and integrated via the lower sealer mounting base 63, and the lower sealer mounting base 63 moves forward and backward. Following the movement, the both end belt belts 68a and 68b and the end portions on the end seal device 60 side of the belt conveyor 27 and the carry-out conveyor 33 are also moved forward and backward. The lower sealer mounting base 63 moves forward and backward and moves up and down, and revolves along a predetermined trajectory. The belt conveyor 27 moves closer to the carry-out conveyor 33 along with the vertical movement. Perform the separation operation. That is, when the lower sealer mounting base 63 moves downward and the upper end seal surfaces of the main and auxiliary top sealers 61 and 62 attached thereto move downward from the transport surface, the belt conveyor 27 approaches the carry-out conveyor 33 side. And move to narrow the gap between them.

  In said structure, the gusset formation apparatus 70 takes the following structures. The tip 71a of the gusset claw 71 has a bifurcated shape, is formed wider than at least the seal width of the auxiliary top sealer 62, and the height position is set to a position where the upper and lower top sealers mesh. One end of the slide bar 73 is connected to the base end side 71 b of the gusset claw 71. The other end of the slide bar 73 is linked to the second transport belt frame 68. Specifically, the support rod 78 is attached to a predetermined position on the outer surface of the second conveyor belt frame 68 so as to protrude outward in the horizontal direction (parallel to the main and auxiliary top sealers 61 and 62), and the tip of the support rod 78. Attach the cam floor 77 to the wall. On the other hand, a cam floor guide 76 disposed on the extension line of the support rod 78 is attached to the other end of the slide bar 73, and the cam floor 77 is aligned with the cam floor guide 76. Thereby, the gusset claw 71 and the second transport belt frame 68 b are connected via the slide bar 73. Therefore, when the lower sealer mounting base 63 moves in the front-rear direction, the second conveyor belt frame 68b also moves forward and backward, so that the gusset claw 71 also moves forward and backward. That is, the gusset claw 71 moves forward and backward in synchronism with the movement in the front-rear direction of the sealer mounting base 63 and the main and auxiliary top sealers 61 and 62 attached thereto.

  On the other hand, a slider 74 is attached to the slide bar 73 so as to be relatively movable along the slide bar 73. Then, the tip of the cylinder rod 75 a of the cylinder 75 is connected to the slider 74. The cylinder 75 is fixed to the machine casing 79, for example. As a result, the slider 74 does not change with respect to the film traveling direction. However, since the slide bar 73 and the slider 74 are relatively movable, the sealer mounting base 63 and the second transport as described above. The slide bar 73 is allowed to move forward and backward as the belt frame 68b moves forward and backward. The slide bar 73 and the cylinder 75 are linked via the slider 74 regardless of the position of the slide bar 73. Therefore, when the cylinder 75 operates and the cylinder rod 75a reciprocates (approaches / separates from the second conveyor belt frame 68b), the slide bar 73 approaches the second conveyor belt frame 68b accordingly. / Move away. As a result, the gusset claw 71 also moves in the same direction, that is, moves to a position where the tip 71a of the gusset claw 71 pushes the side surface of the tubular film (the state shown in FIGS. 11 and 12), or moves backward from the tip. 71a retreats to a position away from the side surface of the tubular film.

  The cylinder 75 is a drive source different from a drive source (servo motor or the like) for revolving and moving the main and auxiliary top sealers 61 and 62 and can be operated independently. Therefore, for example, when performing a sealing process for forming a first end seal portion (first ear portion) having a wide seal width using both the main and auxiliary top sealers 61 and 62, the tip of the gusset claw 71 71a is kept in a retracted state (the gusset claw 71 moves only in the front-rear direction along the film traveling direction), the gusset is not formed, and only the auxiliary top sealer 62 is used to form a narrow seal. When performing a sealing process to form a two-end seal part (second ear part), the tip 71a of the gusset claw 71 is reciprocated toward (or approached / separated from) the side surface of the tubular film at a predetermined timing. (The gusset claw 71 also moves in the front-rear direction along the traveling direction of the film), and a gusset can be formed in the second ear portion.

  Further, as described above, a gusset capable of forming a gusset every other time for the end seal processing (the gusset forming processing is performed when the second end seal portion (second ear portion) having a narrow seal width is formed). The forming apparatus is not limited to the one described above, and can be realized, for example, with the structure shown in FIGS. 13 to 16, or may have another structure. In addition, a simple configuration is to have a separate drive source. However, even if there is only one drive source, a power transmission mechanism for moving the gusset claw toward or away from the tubular film, a clutch or other It is also possible to incorporate a mechanism that enables power transmission to be interrupted and to switch between power transmission and interruption every time.

  The apparatus shown in FIGS. 13 to 16 uses a servo motor as a drive source for the gusset claw 71. Further, in this example, as a mechanism for revolving the top sealer in the end seal device, a mechanism for moving the top sealer up and down and a drive mechanism for moving the top sealer forward and backward are respectively provided as separate drive motors. It is also different in that it operates based on the output of. Of course, the mechanism for revolving the top sealer is independent servo motor described below even for the mechanism that moves along the shape of the groove cam based on the output of one drive motor as in the above embodiment. It is possible to apply a gusset forming apparatus that uses as a drive source.

  The mechanism on the end seal device 60 'side will be briefly described. First, the machine frame 60a is disposed so as to surround the periphery of the transport path of the tubular film 24 and to move forward and backward along the transport direction of the tubular film 24. Below the machine frame 60a, two first guide rails 64b are installed along the traveling direction of the tubular film 24. A slider 64c coinciding with the first guide rail 64b is connected to a predetermined position on the bottom surface on the outer peripheral side of the machine frame 60a. Thus, as the slider 64c moves back and forth along the first guide rail 64b, the machine casing 60a also moves back and forth stably.

  The driving source for the forward / reverse movement uses a flow direction moving motor 60d. That is, the moving direction moving ball screw 60e arranged along the traveling direction of the tubular film 24 is inserted into the female screw portion provided on the connecting plate 60f attached to the substantially central portion of the bottom surface of the machine frame 60a. Then, the timing belt 60h is stretched between the stepped pulley 60g attached to the output shaft of the flow direction moving motor 60d and the stepped pulley 60g 'attached to one end of the flow direction moving ball screw 60e. Accordingly, the main and auxiliary top sealers 61 and 62 attached to the connecting plate 60f and consequently the machine frame 60a can be moved forward and backward by rotating the flow direction moving motor 60d forward and backward. And the moving speed at that time can be changed according to the rotational speed of the flow direction moving motor 60d. That is, the main and auxiliary top sealers 61 and 62 can be moved forward at the same speed as the transport speed of the tubular film 24, or can be moved forward at a speed faster or slower than the transport speed. In the present embodiment, the flow direction moving motor 60d is a motor capable of controlling the rotation speed, such as a servo motor.

  On the other hand, four ball screws extending in the vertical direction were provided so as to cross between the top surface and the bottom surface of the machine casing 60a. This ball screw is composed of a pair of first ball screws 60i arranged on the inner side and a pair of second ball screws 60j arranged on the outer side. The first and second ball screws 60i and 60j are supported by bearings on the top and bottom surfaces of the machine frame 60a at both ends.

  A thin rod-like rotary shaft 60i 'at the upper end of the pair of first ball screws 60i is protruded above the top surface of the machine frame 60a, and a stepped pulley 60k is attached to the tip of the rotary shaft 60i'. The timing belt 60m is passed over. Then, the upper sealer opening / closing motor 60n is linked to the lower end of one of the first ball screws 60i. The upper sealer opening / closing motor 60n uses a motor capable of controlling the rotational speed, such as a servo motor.

  Accordingly, when the upper sealer opening / closing motor 60n is rotated forward and backward, the pair of first ball screws 60i are also rotated forward and backward in the same direction in synchronization. The upper sealer mounting base 63 is linked to the pair of first ball screws 60i. That is, the cylindrical female screw portion 60p is inserted and disposed in the through holes provided at both ends of the upper sealer mounting base 63 in the form of a strip plate, and the female screw portion 60p is linked to the first ball screw 60i. Then, the upper main and auxiliary top sealers 61 and 62 are attached to the lower surface of the upper sealer mounting base 63. Therefore, when the upper opening / closing motor 60n is rotated forward and backward, the rotation is transmitted to the first ball screw 60i, and the female screw portion 60p (upper sealer mounting base 63) and the upper main and auxiliary top sealers 61, 62 are moved up and down. Moving.

  Similarly, a thin rod-shaped rotary shaft 60j ′ at the upper end of the pair of second ball screws 60j is projected above the top surface of the machine frame 60a, and a stepped pulley 60q is attached to the rotary shaft 60j ′, and both stepped pulleys 60q. The timing belt 60r is passed between them. The lower sealer opening / closing motor 60s is linked to the lower end of one second ball screw 60j. The lower sealer opening / closing motor 60s uses a motor capable of controlling the rotational speed, such as a servo motor.

  Accordingly, when the lower sealer opening / closing motor 60s is rotated forward and backward, the pair of second ball screws 60j are also rotated forward and backward in the same direction in synchronization. The lower sealer mounting base 63 is linked to the pair of second ball screws 60j. That is, a cylindrical female screw portion is inserted and disposed in the through-holes provided at both ends of the lower sealer mounting base 46, and the female screw portion is linked to the second ball screw 60j. Then, the lower main and auxiliary top sealers 61 and 62 are attached to the upper surface of the lower sealer mounting base 63. Therefore, when the lower opening / closing motor 60s is rotated forward and backward, the rotation is transmitted to the second ball screw 60j, and the female screw portion (lower sealer mounting base 63) and the lower main and auxiliary top sealers 61, 62 are thus transmitted. Moves up and down.

  Further, a guide rail 60t is provided on the back surface of the machine casing 60a so as to extend in the vertical direction. The sliders 60u and 60v are linked to the guide rail 60t so as to be movable in the axial direction. The slider 60u is connected to the upper sealer mount 63, and the slider 60v is connected to the lower sealer mount 63. As a result, rolls are also prevented, and both mounting bases 63, and thus the main and auxiliary top sealers 61 and 62, can be stably moved up and down with respect to the machine frame 60a.

  A cylinder 60w is provided on the upper surface of the upper sealer mount 63, and the cutter blade built in the upper auxiliary top sealer 62 is moved up and down by the cylinder 60w.

  As described above, the main and auxiliary top sealers 61 and 62 are moved forward and backward (horizontal movement) and vertically and vertically (vertical movement) by using separate drive motors. The front sealers 61 and 62 can be controlled to move back and forth and up and down at any timing, and the trajectory of the revolving movement of the main and auxiliary top sealers 61 and 62 can be easily set and changed.

  Furthermore, a driving source (upper sealer opening / closing motor 60n) for moving the upper main and auxiliary top sealers 61 and 62 up and down, and a driving source (lower for moving the lower main and auxiliary top sealers 61 and 62 up and down) Since the side sealer opening / closing motor 60s) is formed by separate motors, the upper and lower main and auxiliary top sealers 61 and 62 can be independently moved up and down. Thereby, it is possible to set the movement distance of each top sealer to an optimum one for the articles to be packaged (packaging bodies) having different heights without worrying about the movement distance of the other party.

  Thereby, for example, according to the height of the object to be packaged, the uppermost movement position of the upper main and auxiliary top sealers 61, 62 is set to a position that takes a certain margin from the upper surface position of the object to be packaged, The lowermost moving position of the lower main and auxiliary top sealers 61 and 62 can be set to a predetermined position below the conveying surfaces of both conveyors regardless of the height of the objects to be packaged. Therefore, it does not move over a longer distance than necessary, and the load on the drive motor can be reduced. Moreover, since the position where the upper and lower main and auxiliary top sealers 61 and 62 mesh can be arbitrarily and easily changed, it can be set to an arbitrary position in the height direction of the package.

  In the present embodiment, the following gusset forming device 70 is provided for the end seal device 60 ′ having the above configuration. As described above, the gusset forming apparatus 70 includes gusset claws 71 located on both sides of the side surface of the tubular film 24 and a drive mechanism (described later) that moves the gusset claws 71.

  In the gusset claw 71, the opposite tip 71a can be pushed inward on both side surfaces of the tubular film 24. A slider 95 is attached to the lower surface of the base end opposite to the tip 71a. It has been. The slider 95 is linked to the guide rail 96 and can reciprocate linearly along the guide rail 96. The guide rail 96 is connected to the machine frame 60a of the end seal device 60 ′ by a predetermined connecting mechanism, and maintains a posture extending in parallel with the main and auxiliary top sealers 61 and 62. As a result, the guide rail 96 and thus the gusset claw 71 stably reciprocate while maintaining the horizontal posture along the axial direction of the main and auxiliary top sealers 61 and 62.

  A connecting mechanism for connecting the guide rail 96 to the machine frame 60a is as follows. That is, the belt-like connecting plate 80 is fixed to the machine frame 60a of the end seal device 60 ′. A guide rail 81 is installed on the inner surface side of the connecting plate 80 so as to extend in the vertical direction, and a slider 82 is mounted on the guide rail 81 so as to be movable up and down. Then, one surface (vertical surface side) 83a of the L-shaped plate 83 is fixed to the slider 82, and a guide rail 96 is attached to the other surface (horizontal surface side) 83b of the L-shaped plate 83. Thus, the gusset claw 71 is connected to the machine frame 60 a via the slider 95, the guide rail 96, the L-shaped plate 83, the slider 82, the guide rail 81, and the connecting plate 80.

  Furthermore, the L-shaped plate 83 is provided with a female screw portion 84 at a predetermined position on the other side (horizontal plane) 83b. Further, support plates 85 are attached to predetermined positions on the inner surface side of the connection plate 80, and both ends of the screw screw shaft 86 are rotatably supported by the support plate 85. Then, the female screw portion 84 is linked to a screw portion 86 a provided at an intermediate portion of the screw screw shaft 86. Further, a first bevel gear 87 is attached to the lower end of the screw screw shaft 86, and a second bevel gear 88 that meshes with the first bevel gear 87 is attached to the same rotating shaft 89. The rotary shaft 89 is linked to a height adjusting drive motor 90 that can rotate forward and backward.

  As a result, when the height adjusting drive motor 90 rotates forward and backward, the rotational force is transmitted from the rotary shaft 89 to both the bevel gears 88 and 87 to the screw screw 88, and the female screw portion 84 (L-shaped plate 83) is moved up and down. Since the moving force works, the gusset claw 71 can be moved to an arbitrary height and the height position can be maintained. Such up-and-down movement is guided by the slider 82 and the guide rail 81 and is performed stably. Therefore, for example, even if the height position at which the main and auxiliary top sealers 61 and 62 arranged vertically are changed in accordance with the change of the product height or the like, the height adjusting drive motor 90 is placed in a predetermined direction. The gusset claw 71 can be easily set at an appropriate height position by rotating only a fixed amount.

  The drive means for reciprocating linearly moving the gusset claw 71 inward and outward is a drive source for the end seal device 29 as a drive source (flow direction moving motor 60d, upper sealer opening / closing motor 60n, lower sealer opening / closing motor 60s). Further, another gusset drive motor 92 was used. The gusset drive motor 92 rotates forward and backward, and is realized by a servo motor or the like. Further, separate gusset drive motors 92 are provided for the left and right gusset claws 71, respectively.

  Then, one end of the swing lever 93 is connected to the output shaft of each gusset drive motor 92, and a pin 93 a is attached to the other end of the swing lever 93. On the other hand, a guide plate 94 extending in the vertical direction is attached to the side surface of the slider 95 to which the gusset claw 71 is attached, and the above-mentioned pin 93 a is aligned with an elongated guide hole 94 a formed in the guide plate 94.

  As a result, the swing lever 93 (pin 93a) and the guide plate 94 (guide hole 94a) constitute a mechanism for converting forward and reverse rotational motion into reciprocating linear motion. Therefore, when the gusset drive motor 92 rotates forward and backward, the swing lever 93 rotates forward and backward within a predetermined angle range with the lower end as a rotation center, and the pin 93a also reciprocates on a predetermined arc. Then, in the guide plate 94 having the guide hole 94a with which the pin 93a coincides, the urging force in the vertical direction of the pin 93a is absorbed by the pin 93a moving up and down in the guide hole 94a, and the horizontal direction of the pin 93a is absorbed. Receiving urging force and reciprocating horizontally. As a result, the slider 95 and the gusset claw 71 connected to the guide plate 94 reciprocate linearly in the horizontal direction, and the movement is stably performed by the slider 95 and the guide rail 96.

  Further, since the position of the tip 71a of the gusset claw 71 is determined by the horizontal position of the pin 93a, if the angle range for forward / reverse rotation of the gusset drive motor 92 is increased, the moving distance of the gusset claw 71 also becomes longer. If the angle range is reduced, the moving distance is also shortened. Further, by appropriately changing the stop position on the forward rotation side and the stop position on the reverse rotation side, the stop position when the gusset claw 71 moves forward and pushes the tubular film 24 inward can be changed. It can be easily adjusted to change the amount (distance) or to change the position where the gusset claw 71 moves backward and stops.

  According to the present embodiment, the height adjusting drive motor 90 is appropriately rotated, and the height position of the gusset claw 71 is set to a position where the main and auxiliary top sealers 61 and 62 are engaged with each other. When the pillow wrapping machine is operated, the gusset drive motor 72 is reversely rotated to a predetermined angle to move the gusset claw 71 backward and temporarily stop at the reference position. At this time, since the tip 71a of the gusset claw is retracted to the outside from both side surfaces of the tubular film 24, the tubular film 24 that encloses the article to be packaged 18 proceeds as it is. The reference position is set to a position that matches the width dimension of the tubular film 24 (a position where the tip 71a of the gusset claw 71 approaches the side surface of the tubular film 24), so that the gusset claw 71 moves backward. The moving distance can be minimized, and the load on the gusset drive motor 92 can be suppressed as much as possible, and high-speed processing can be supported.

  Then, the seal surface of the main top sealer 61 is retracted from the seal surface of the auxiliary top sealer 62, and a predetermined position of the tubular film 24 is sealed only by the auxiliary top sealer 62 to narrow the second end seal portion (second In the case of forming the ear portion), the tubular film 24 moves forward, the articles 18 to be packaged exist before and after the auxiliary top sealer 62, and only the tubular film 24 exists between the upper and lower auxiliary top sealers 62. In such a relative positional relationship, the gusset drive motor 92 rotates forward, and each gusset claw 71 moves toward the inner side (tubular film side). And the front-end | tip 71a contacts the side surface of the cylindrical film 24, and pushes it inward, A gusset (fold) like illustration is formed in the side surface of the cylindrical film 24. FIG. This pushing amount is controlled by the rotation angle when the gusset drive motor 92 rotates forward.

  Further, when the gusset drive motor 92 rotates positively to a predetermined angle and then temporarily stops, the position of the gusset claw 71 is maintained while the tubular film 24 is pushed in. In this state, the upper and lower auxiliary top sealers 62 move closer to each other and sandwich the predetermined position of the tubular film 24 by driving the upper sealer opening / closing motor 60n and the lower sealer opening / closing motor 60s. Seal and cut. At this time, the auxiliary top sealer 62 moves along the conveying direction of the tubular film 24 by driving the flow direction moving motor 60d, but the gusset claw 71 is also connected to the machine frame 60a of the end seal device 60 '. It moves integrally in the conveying direction of the tubular film 24.

  When the gusset drive motor 92 starts reverse rotation at a predetermined timing, the gusset claw 71 moves backward. Further, the upper sealer opening / closing motor 60n and the lower sealer opening / closing motor 60s also rotate in a predetermined direction so that the upper and lower auxiliary top sealers 62 are separated from each other.

  On the other hand, when the seal surface of the main top sealer 61 and the seal surface of the auxiliary top sealer 62 are flush with each other to form a first end seal portion (first ear portion) having a wide seal width, the drive motor 92 for gussets. Holds the position where the gusset claw 71 is not moved forward (the position where the tip 71a of the gusset claw 71 does not contact the side surface of the tubular film). Thereby, a gusset is not formed around the first ear. And each operation | movement of each drive motor performs each operation | movement mentioned above by controlling forward / reverse rotation, a stop, a rotational speed, etc. according to the command from the control apparatus which is not illustrated.

  17 and 18 show a horizontal pillow packaging machine according to a fourth embodiment of the present invention. In the present embodiment, the configuration of the end seal device 110 (including the gusset forming device 42) is different from that of the above embodiments, and other configurations are the same. Accordingly, the different end seal device 110 will be described below.

  In the present embodiment, the end seal device 110 uses a single rotary seal device and adopts a configuration in which two top sealers 112 and 113 are attached to one rotation shaft 111. That is, the first top sealer 112 having a wide seal width and the second top sealer 113 having a narrow seal width are attached in a state of being shifted by 180 degrees. Then, by rotating the upper and lower rotating shafts 111 synchronously, the first top sealers 112 and the second top sealers 113 are timed to sandwich the tubular film 24 from above and below. Accordingly, the first top sealer 112 and the second top sealer 113 alternately perform the sealing process as the rotating shaft 111 rotates, so that the cylindrical film 24 has a wide sealing width by the first top sealer 112. The first end seal portion (first ear portion) and the second end seal portion (second ear portion) having a narrow seal width by the second top sealer 113 are alternately formed.

  The gusset forming device 42 is premised on the one used in the second embodiment, and the drive source may be independent from the drive source of the end seal processing 110. Thus, in the sealing section by the first top sealer 112, the tip 43a of the rod-shaped gusset claw 43 is moved backward, and in the sealing section by the second top sealer 113, the gusset claw 43 is moved to the cylindrical film at an appropriate timing. A gusset can be formed by moving toward the side and pushing the side inward.

  That is, in the sealing section by the second top sealer 113, the tip 43a of the tubular film 24 is further than the side surface of the tubular film 24 while the portion in which the article to be packaged 18 is stored passes. When the relative position is such that only the tubular film 24 is present between the second top sealers 113 (the package 18 is not present), the gusset claw 43 is located on the inner side (tubular film). Side). And the front-end | tip 43a contacts the side surface of the cylindrical film 24, and while pushing it inward, the state is maintained for a fixed period. Then, since the cylindrical film 24 moves forward while maintaining that, as a result, the gusset 6 is formed in the cylindrical film 24 over the predetermined area in the front-back direction.

  Then, the front-rear direction intermediate portion where the gusset is formed is sandwiched and sealed by the second top sealer 113. Thereby, the 2nd ear | edge part 3b in which the gusset 6 was produced | generated is formed. Since the seal surfaces of the first and second top sealers 112 and 113 move on a circumference having a predetermined radius, the gusset claw 43 is set to be positioned outside the movement locus, and the top surface Avoid interference with the sealer.

  Furthermore, the first and second top sealers 112 and 113 both have a built-in cutter, and when each top sealer sandwiches the tubular film 24 and heat seals, the sealing portion is cut in the lateral direction. . Thereby, the package 1 is manufactured. In addition, since another structure and an effect are the same as that of each embodiment mentioned above, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted.

  19 and 20 show a horizontal pillow packaging machine according to a fifth embodiment of the present invention. In the present embodiment, the configuration of the end seal device 100 (including the gusset forming device 41) is different from that of the above-described embodiments, and other configurations are the same. Therefore, the different end seal device 100 will be described below.

  The end seal device 100 employs a configuration in which a plurality of top sealers 105 and 106 are attached to an endless chain 102 disposed above and below a conveyance path. More specifically, the sprocket 105 is arranged at a predetermined interval back and forth along the film conveyance direction, and the endless chain 102 is arranged so as to be spanned over the front and rear sprockets 105. In the endless chain 102, two first top sealers 104 having a wide seal width and two second top sealers 105 having a narrow seal width are arranged alternately. Thereby, each top sealer 104, 105 moves following the rotation of the endless chain 102. The first top sealer 104 and the second top sealer 105 attached to the upper and lower endless chains 102 are adjusted to positions where they can mesh with each other so that the tubular film 24 can be sandwiched from above and below. Accordingly, as shown in FIG. 19, the first top sealer 104 and the second top sealer 105 move in a certain section while sandwiching a predetermined position of the tubular film 24. Therefore, the cylindrical film 24 is formed alternately with a first end seal portion (first ear portion) having a wide seal width and a second end seal portion (second ear portion) having a narrow seal width. In the lower endless chain 102, a roller 103 is disposed between the front and rear top sealers to form a transport surface.

  The gusset forming apparatus 40 is premised on the one used in the first embodiment. The drive source for the gusset forming device 40 is independent from the drive source for the end seal processing 110. Furthermore, in this embodiment, the gusset claw 41 moves along a transport direction of the tubular film 24 for a relatively long distance. That is, in synchronization with the movement of the second top sealer 105, immediately before the upper and lower second top sealers 105 mesh, the tip of the gusset claw 41 pushes the side surface of the tubular film 24 toward a predetermined position inward, and then pushes in. The second top sealer 104 sandwiches the part from above and below. In this state, the gusset claw 41 also moves forward along the transport direction by a predetermined distance in accordance with the forward movement of the second top sealer 105. Note that the gusset claws 41 may move forward together until the second top sealer 105 is separated, or may be separated if moved by an appropriate distance. In addition, since another structure and an effect are the same as that of each embodiment mentioned above, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted.

It is a figure which shows an example of a package body with a gusset. It is a front view which shows 1st Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a top view which shows 1st Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a figure which shows an example of operation | movement of a gusset nail | claw. It is a front view which shows 2nd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a top view which shows 2nd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a front view which shows 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a top view which shows 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a figure explaining the principal part of the end seal apparatus in 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a front view which shows an example of the end seal apparatus and gusset formation apparatus in 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a top view which shows an example of the end seal apparatus and gusset formation apparatus in 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a side view which shows an example of the end seal apparatus and gusset formation apparatus in 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a side view which shows the other example of the end seal apparatus and gusset formation apparatus in 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is AA arrow sectional drawing in FIG. It is an enlarged side view which shows the other example of the gusset formation apparatus in 3rd Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a figure which shows the drive mechanism of a gusset nail | claw. It is a front view which shows 4th Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a top view which shows 4th Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a front view which shows 5th Embodiment of the horizontal pillow packaging machine which concerns on this invention. It is a top view which shows 5th Embodiment of the horizontal pillow packaging machine which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pillow packaging machine 11 Packaging machine main body 12 Film supply apparatus 13 Packaged article conveyance supply apparatus 18 Packaged article 24 Cylindrical film 24 Center seal apparatus 29, 60, 60 ', 100, 110 End seal apparatus 40, 42, 70 Gazette Forming device 41, 43, 71 gusset claw

Claims (8)

A horizontal pillow wrapping machine that manufactures a pillow wrapping body by sealing or cutting a predetermined portion while transporting a cylindrical film containing a packaged object in the horizontal direction,
Means for forming a continuous strip-like film into a cylindrical shape;
A center seal device that seals the polymerization end of the cylindrical film formed in the cylindrical shape;
An end seal device disposed downstream of the center seal device and sealing in the width direction of the tubular film;
Cutter means for cutting the end seal portion sealed by the end seal device in the lateral direction;
Prior to sealing by the end seal device, both side surfaces of the tubular film in the advancing direction before and after the end seal portion are pushed inward with a gusset claw to crease the side surface of the tubular film and remove the gusset. A gusset forming device to be formed;
With
The end seal device alternately forms a first end seal portion and a second end seal portion with respect to the tubular film,
The horizontal pillow packaging machine, wherein the gusset forming device forms gussets before and after the second end seal portion in accordance with the operation of a top sealer for generating the second end seal portion. . The end seal device includes a first top sealer for forming a first end seal portion and a second top sealer for forming a second end seal portion on a rotating shaft arranged vertically with a tubular film interposed therebetween. And a process in which the upper and lower first top sealers sandwich the tubular film to form a first end seal portion as the rotating shaft rotates, and the upper and lower second top sealers are cylinders. And a process of forming a second end seal portion by sandwiching the film-like film, and alternately and repeatedly,
The gusset forming device maintains a retracted position in which a tip of the gusset claw is separated from a side surface of the tubular film during the process of forming the first end seal portion with the first top sealer, and the second top sealer In the process of forming the second end seal portion at, the gusset claw approaches / separates from the side surface of the tubular film according to the movement of the second top sealer, and the gusset is placed at a predetermined position of the tubular film. The horizontal pillow wrapping machine according to claim 1, wherein the horizontal pillow wrapping machine is configured so as to form. The end seal device is a type that revolves in a predetermined path while maintaining a state in which the seal surfaces of the upper and lower top sealers face each other.
The top sealer has a main top sealer and an auxiliary top sealer disposed on at least one of the main top sealer before and after the film traveling direction;
This auxiliary top sealer is configured to move up and down relatively with respect to the main top sealer. The sealing surfaces of the main top sealer and the auxiliary top sealer are flush with each other, and the cylindrical film is sandwiched between the two top sealers for sealing. The step of forming the first end seal portion having a wide width and the step of forming the second end seal portion having a narrow seal width only by the main top sealer by retreating the auxiliary top sealer,
In the step of forming the first end seal portion with the main top sealer and the auxiliary top sealer, the gusset forming device maintains a retracted position in which the tip of the gusset claw is separated from the side surface of the tubular film, In the process of forming the second end seal portion only with the top sealer, the gusset claw approaches / separates from the side surface of the tubular film and moves to a predetermined position of the tubular film in accordance with the movement of the main top sealer. The horizontal pillow wrapping machine according to claim 1, wherein the horizontal pillow wrapping machine is configured to form a gusset.   4. The horizontal pillow packaging machine according to claim 2, wherein the drive source of the gusset forming device is configured separately from the drive source of the end seal device. 5. The end seal device includes a first seal device for forming a first end seal portion and a second seal device for forming a second end seal portion in the front-rear direction along the conveyance direction of the tubular film. Place and
The gusset forming device is disposed in the vicinity of the second sealing device,
The horizontal pillow packaging machine according to claim 1, wherein the cutter means is provided on the downstream side of the end seal device.   The end seal device includes a first top sealer for forming a first end seal portion and a second top sealer for forming a second end seal portion on an endless chain disposed vertically with a tubular film interposed therebetween. And a process in which the upper and lower first top sealers sandwich the cylindrical film to form a first end seal portion as the endless chain rotates, and the upper and lower second top sealers are in the cylinder The horizontal pillow wrapping machine according to claim 1, wherein the process for forming the second end seal portion by sandwiching the film is alternately performed.   The said end seal apparatus forms the seal width of a 1st end seal site | part widely, and forms the seal width of a 2nd end seal site | part narrowly, The any one of Claim 1 to 6 characterized by the above-mentioned. The horizontal pillow packaging machine described.   The horizontal pillow packaging machine according to any one of claims 1 to 7, further comprising a hole forming means for forming a hole in a formation region of the first end seal portion.

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