JP2005112408A - Packaging film supporting mechanism in automatic filling and packaging machine of longitudinal multi-row four-side seal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic filling and packaging machine of longitudinal multi-row four-way seal to form excellent longitudinal seal. <P>SOLUTION: The automatic filling and packaging machine 1 of longitudinal multi-row four-way seal comprises: a forming mechanism 12 having a plurality of former pipes 151 to form two packaging films 421 and 422 in the shape of a packaging bag; a longitudinal seal mechanism 16 to hold and longitudinally seal the two packaging films 421 and 422 between the plurality of former pipes 151; a packaging film supporting mechanism 17 which is provided below the longitudinal seal mechanism 16 to urge the two packaging films 421 and 422 at the longitudinal seal portion in the direction of coming into contact with each other; a slit mechanism 18 to slit the longitudinal seal portion; and a transverse seal mechanism to transversely seal the two longitudinally sealed packaging films 421 and 422 while pulling the films by the length of each bag portion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vertical multi-row four-side seal automatic filling and packaging machine that forms a plurality of packages sealed by a four-side seal at a time.

  Conventionally, as a four-side seal automatic filling and packaging machine for producing a four-side sealed package, a roll type automatic filling and packaging machine has been mainly used (see Patent Document 1). In this roll type automatic filling and packaging machine, the number of rows is limited, and therefore the number of packages that can be manufactured at one time is limited. Moreover, when changing the width or length of the packaging bag of the package, complicated parts replacement such as roll replacement has occurred. For this reason, a specification change of a packaging bag can be performed without replacing parts, and a four-side seal automatic filling and packaging machine capable of quickly responding to the specification change has been desired.

  On the other hand, there is a stick type vertical multi-row automatic filling and packaging machine as an automatic filling and packaging machine that can flexibly cope with a change in specification of a packaging bag without replacing parts. Patent Document 2 discloses an example of the vertical multi-row automatic filling and packaging machine. Since the stick type vertical multi-row automatic filling and packaging machine is of a multi-row type, a large number of packages can be manufactured at a time. Moreover, in this vertical multi-row automatic filling and packaging machine, changing the bag width of the package can be dealt with by changing the position of the vertical seal, slitter, etc. It is possible to respond only by.

In a conventional vertical multi-row automatic filling and packaging machine, a packaging film (wrapping material) slit into a plurality of strips is fed by a horizontal seal bar or the like, and is mainly fed by an intermittent operation of the horizontal seal bar. . Specifically, the horizontal seal bar is stopped when a certain amount of sheet film is pulled out, and in this stopped state, the vertical seal and the horizontal seal serving as the bag bottom are performed, and then the filling material is filled. In this vertical multi-row automatic filling and packaging machine, wrinkles are likely to occur on the packaging film in conjunction with the intermittent feeding operation by the horizontal seal bar. In particular, when a wide packaging film is used, the packaging film approaches the center of the film, and wrinkles are generated in the vertical seal portion.
JP 2003-020002 A JP 2001-199405 A

As described above, the conventional vertical multi-row automatic filling and packaging machine has a problem that the vertical seal cannot be satisfactorily formed because wrinkles are generated in the vertical seal portion.
The present invention has been made to solve such problems, and an object thereof is to provide a vertical multi-row four-way seal automatic filling and packaging machine capable of forming a vertical seal satisfactorily.

The vertical multi-row four-way seal automatic filling and packaging machine according to the present invention is a vertical multi-row that produces a large number of four-side sealed packages by filling the packing film facing the front and back before being sent substantially vertically downward with a filling material. A four-side seal automatic filling and packaging machine, comprising a forming mechanism having a plurality of former pipes for forming the front and rear packaging films into the shape of a packaging bag while being sandwiched between the front and rear packaging films, and the plurality of formers A vertical seal mechanism that is arranged in parallel between pipes and vertically seals with the front and rear packaging films sandwiched therebetween, and a vertical seal portion that is provided below the vertical seal mechanism and is vertically sealed by the vertical seal mechanism. A wrapping film support mechanism that urges the wrapping film in a contacting direction, and a vertical seal portion that is vertically sealed by the vertical seal mechanism is slit. A slitting mechanism that, in the vertical sealing mechanism and the synchronous, in which a transverse sealing mechanism for transverse sealing while pulling the respective packaging film before and after the said longitudinal seals one by one pack of.
In such a configuration, since the packaging film support mechanism can give tension in the width direction to the front and rear packaging films, it is possible to prevent wrinkles from occurring in the vertical seal portion, so that the vertical seal is good. Can be formed.

  Preferably, the packaging film support mechanism includes a plurality of pairs of support rollers that are juxtaposed between the former pipes and press the vertical seal portion. As a result, the front and rear packaging films can be brought into close contact with the former pipe, and the vertical sealing can be performed in a state where the portion to be vertically sealed is stretched, so that a good vertical seal can be formed.

  Furthermore, the surface of at least one of the plurality of pairs of support rollers is processed to be a finished surface of the vertical seal portion. Thereby, the bubbles in the vertical seal can be removed, the appearance can be improved, or the filling material can be made difficult to leak, or the finished surface can be formed on the vertical seal according to the application.

  The support roller can be made of metal, rubber, or plastic. Thereby, it is possible to adjust the adhesiveness of the support roll with respect to a packaging film, the grade to press, etc.

  Still further, the plurality of pairs of support rollers are attached so that the angle of each of the support rollers can be adjusted individually. Thereby, by pulling in the width direction, wrinkles can be further stretched, or in the case of a packaging film that is weak against pulling, the tension can be adjusted appropriately.

  ADVANTAGE OF THE INVENTION According to this invention, the vertical multi-row four-way seal automatic filling and packaging machine which can form a vertical seal favorably can be provided.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 of the Invention
First, the overall configuration of a vertical multi-row four-way seal automatic filling and packaging machine according to the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a front view of a vertical multi-row four-side seal automatic filling and packaging machine according to the present invention. In FIG. 1, a vertical multi-row four-way seal automatic filling and packaging machine according to the present invention is indicated generally by the reference numeral 1. The automatic packaging machine 1 according to the present invention has a structure in which a wide sheet film 41 is sequentially drawn downward from an original fabric roll in accordance with the vertical movement of the horizontal sealing mechanism.
Hereinafter, in FIG. 1, the top, bottom, left, and right sides observed from the front side of the paper surface, the back side of the paper surface from the rear side, and the front side are respectively referred to as the upper side, the lower side, the left side, and the right side. Hereinafter, the vertical multi-row four-way seal automatic filling and packaging machine 1 is abbreviated as the automatic packaging machine 1.

  In FIG. 1, 11 is a main body frame, 12 is a hopper, 13 is a quantitative supply mechanism, 14 is a shooter, 15 is a forming mechanism, 16 is a vertical seal mechanism, 17 is a packaging film support mechanism, 18 is a slit mechanism, and 19 is a horizontal seal. A mechanism, 20 is a cutter mechanism, 21 is a discharge tray, and 22 is an operation panel.

The forming mechanism 15 is a mechanism for stacking two packaging films 421 and 422 to form a packaging bag. The forming mechanism 15 includes a former pipe 151, a pair of former brushes 152 (the other is not shown in FIG. 1), and a pair of former rollers 154 (the other is not shown in FIG. 1). Is done.
The vertical sealing mechanism 16 is provided below the forming mechanism 15 and thermocompression-bonds the two packaging films 421 and 422 by a longitudinal heat sealer 161 (the other is not shown in FIG. 1) which forms a pair at the front and rear. This is a vertical sealing mechanism.

The packaging film support mechanism 17 is provided below the vertical sealing mechanism 16 and urges the two packaging films 421 and 422 to contact each other with the vertical sealing portion vertically sealed by the vertical sealing mechanism 16 interposed therebetween. It is. In the packaging film support mechanism 17, a pair of support rollers 171 (not shown in FIG. 1) presses the two packaging films 421 and 422 between the plurality of former pipes 151.
The slit mechanism 18 is a mechanism that is provided below the packaging film support mechanism 17 and cuts a plurality of longitudinal seal portions of the two packaging films 421 and 422 by the slitter 181.

Further, in FIG. 1, 310 is a film feed roller, 311 is a pinch roller, 32 is a step roller, 33 is a film feed control mechanism, 340 is a control roller, 341 is a pinch roller, 35 is a slitter, 36 is a Σ frame, 361 Is a frame guide roller on the front side of the Σ frame 36, and 371 is a guide roller.
Moreover, in FIG. 1, 40 is an original fabric roll, 41 is a sheet film (packaging material), 421,422 is a packaging film. Each of the packaging films 421 and 422 is a packaging film on the front side and a packaging film on the rear side of the sheet film 41 that is equally divided in the longitudinal direction.
The automatic packaging machine 1 observed from the left side in FIG. 1 is shown in the side view of FIG. In FIG. 2, 153 is a rear former brush, 155 is a rear former roller, 162 is a rear vertical heat sealer, 191 and 192 are horizontal heat sealers, and 362 is a rear frame of the Σ frame 36. The body guide roller 372 is a rear guide roller.

The overall operation of the automatic packaging machine 1 will be described with reference to FIGS. 1 and 2.
When the film feed roller 310 rotates, the film feed roller 310 and the pinch roller 311 come into strong contact with each other, so that the wide sheet film 41 is drawn from the wide sheet film roll 40. At this time, the film feed control mechanism 33 monitors the tension of the sheet film 41 via the step roller 32 and controls the rotation of the film feed roller 310 so that the tension of the sheet film 41 is always maintained at a constant amount. The drawn sheet film 41 is sent to the slitter 35 in a state where the sheet film 41 is pressed by the control roller 340 and the pinch roller 341. The slitter 35 slits the fed sheet film 41 and bisects it in the longitudinal direction of the sheet film 41. These two packaging films 421 and 422 are transferred to the Σ frame 36.

  As shown in FIG. 2, each of the front side packaging film 421 and the rear side packaging film 422 is moved from the substantially horizontal direction to the inside of the automatic packaging machine 1 by frame body guide rollers 361 and 362 on both front and rear sides of the Σframe body 36. It is folded and sent approximately vertically downward. The two wrapping films 421 and 422 are guided to the former pipe 151, the former brushes 152 and 153, and the former rollers 154 and 155 provided in the forming mechanism 15 by the guide rollers 371 and 372 on both the front and rear sides. The The two guided packaging films 421 and 422 are transferred substantially vertically downward while being sandwiched between the pair of former brushes 152 and 153 and the former rollers 154 and 155 in the forming mechanism 15. At this time, the two packaging films 421 and 422 sandwich the former pipe 151 therebetween, and are sent to the vertical sealing mechanism 16 in this state.

  In the vertical sealing mechanism 16, the two packaging films 421 and 422 are vertically sealed by a plurality of pairs of vertical heat sealers 161 and 162 between the plurality of former pipes 151. The two wrapping films 421 and 422 are pressed from the front and back by the support rollers 171 and 172 of the wrapping film support mechanism 17 in the longitudinal seal portion. The two packaging films 421 and 422 are pressed against the rotating roller 182 by each slitter 181 of the slit mechanism 18 in this pressed state. When the rotating roller 182 rotates, the two packaging films 421 and 422 are cut into a plurality of strips along the vertical seal.

  After this cutting, the heat is sealed by the horizontal heat sealers 191 and 192 of the horizontal seal mechanism 19. At the same time, the filling material is supplied from the hopper 12 of the fixed-quantity filling mechanism 13 through each shooter 14 and the former pipe 151 to a packaging bag formed between the packaging films 421 and 422. The horizontal sealing mechanism 19 moves downward by one pack while the packaging films 421 and 422 are held between the horizontal heat sealers 191 and 192. At this time, the two packaging films 421 and 422 are drawn into the forming mechanism 15, the vertical sealing mechanism 16, and the horizontal sealing mechanism 19 by one pack, and the sheet film 41 for one pack is pulled out from the original fabric roll 40. It is.

  After the sheet film 41 is pulled out, the horizontal sealing mechanism 19 moves back upward, and then performs horizontal sealing on the packaging films 421 and 422 again by the horizontal heat sealers 191 and 192. By this horizontal seal, the mouth of the packaging bag filled with the filling material is sealed. This completes one step of sealing the sealing films 421 and 422 on which the filling material is packaged in four directions. Thereafter, the cutter mechanism 20 provided at the lower portion of the horizontal seal mechanism 19 cuts the center of the horizontal seal when the horizontal heat sealers 191 and 192 return, and the packaged four-side seal package is discharged from the discharge tray 21. .

  Such an automatic packaging machine 1 is capable of producing a large number of four-side sealed packages at the same time from two packaging films 421 and 422 transferred substantially vertically downward. The automatic packaging machine 1 can produce a package with a four-side seal used to add quality and luxury. Furthermore, according to this automatic packaging machine 1, a desired four-sided sealed package can be formed by adjusting the position of each member, changing the shape, changing various operation settings, and the like.

  Furthermore, the automatic packaging machine 1 is a high-quality product having a substantially symmetrical shape with respect to the front and back directions by vertically sealing on a plane including a substantially center line viewed from the left and right side surfaces of the plurality of former pipes 151. A four-side seal package can be manufactured. In the automatic packaging machine 1 according to the present invention, by changing the size and shape of the former pipe 151, not only a liquid material or a powder material but also a relatively large solid material can be filled as a filling material. .

  Next, the packaging film support mechanism 17 of the automatic packaging machine 1 according to the present invention will be described in detail. The packaging film support mechanism 17 according to the present invention is configured such that the forming mechanism 15 sandwiches the two packaging films 421 and 422 above the vertical sealing mechanism 16, while the two packaging films are below the vertical sealing mechanism 16. 421 and 422 are sandwiched.

  Here, when the packaging film support mechanism 17 is described, the forming mechanism 15 and the vertical sealing mechanism 16 of the automatic packaging machine 1 according to the present invention will also be described. In the vertical sealing mechanism 16 of the automatic packaging machine 1 according to the present invention, the vertical heat sealers 161 and 162 provided opposite to the front and rear sides operate simultaneously in the opposite direction, and the two packaging films 421 and 422 are moved to the front and rear sides. Are pressed and bonded together.

First, the support rollers 171 and 172 of the packaging film support mechanism 17 provided on both front and rear sides will be described in detail with reference to FIGS. 3 and 4.
The front view of FIG. 3 shows an example of the configuration of the front support roller 171 and its surroundings. This front view is a view observed from the front side.

  As shown in FIG. 3, the former pipes 151 of the forming mechanism 15 are arranged in multiple rows in a substantially horizontal direction (width direction of the packaging films 421 and 422). The former pipe 151 has a wide shape such that a cylinder is crushed, and is arranged so that the wide direction is a parallel arrangement direction. That is, the shape of the former pipe 151 is such that the width viewed from the front side is larger than the width viewed from the left (right) side.

  A spacing member 511 is attached to the front side of the lower end of the former pipe 151. The spacing member 511 is a thin member having a substantially rectangular planar shape, and has a shape slightly warped along the longitudinal direction. The warped shape holding member 511 is attached to the lower end of the former pipe 151 so as to be separated from the former pipe 151 in a substantially vertical downward direction. That is, in FIG. 3, the spacing member 511 is warped from the rear side toward the front side as it goes downward. The spacing member 511 spreads the packaging film 421 from the inside to the outside surrounded by the two packaging films 421 and 422 below the lower end of the former pipe 151.

  The former brush 152 is provided over the whole in a substantially horizontal direction. The former brush 152 is provided with the brush portion downward. At the same time, the former brush 152 is fixed in a state where the tip of the brush portion faces the direction of the former pipe 151.

  A plurality of former rollers 154 are arranged in a substantially vertical direction between former pipes 151 arranged in multiple rows, and are provided below the former brush 152. The former roller 154 is rotatably supported by a rotating shaft 521 that is held substantially horizontally in the left-right direction, and the roll surface of the former roller 154 is substantially parallel to the axial direction of the rotating shaft 521.

As shown in FIG. 3, a plurality of vertical heat sealers 161 are arranged in parallel between a plurality of former pipes 151 arranged in multiple rows on the front side of the vertical sealing mechanism 16. The vertical heat sealer 161 has a substantially rectangular parallelepiped shape, and heating means such as a heater (not shown) is built in the vertical heat sealer 161.
Although not shown, the vertical heat sealer 161 is attached to an attachment member having an attachment hole formed in the longitudinal direction so that the position can be adjusted in a substantially horizontal direction. Further, a cylinder mechanism (not shown) is fixed to the attachment member (not shown), and can be operated in a direction (front-rear direction) substantially perpendicular to the paper surface in FIG.

  A plurality of support rollers 171 are juxtaposed in a substantially horizontal direction between former pipes 151 arranged in multiple rows, and are provided below the vertical heat sealer 161. The support roller 171 can be formed using, for example, a metal such as stainless steel or titanium. The support roller 171 may be made of, for example, heat resistant rubber or plastic. When heat resistant rubber is used, the support roller 171 can be prevented from sliding on the packaging films 421 and 422. it can. Similar to the former roller 154, the support roller 171 is pivotally supported by a rotation shaft 531 held substantially horizontally. Further, the roll surface of the support roller 171 is substantially parallel to the axial direction of the rotation shaft 531. This roll surface is, for example, solid processed and formed substantially flat.

The rear view of FIG. 4 shows a configuration example of the rear support roller 172 and its periphery. This rear view is a view observed from the rear side.
As shown in FIG. 4, a spacing member 512 similar to the spacing member 511 is attached to the rear side of the lower end of the former pipe 151. The rear former brush 153 is provided substantially horizontally with the former brush 152 facing the front and rear. As with the former roller 154, the rear former roller 155 is pivotally supported by a rotating shaft 522 in a state of facing the front and rear.

  Similar to the front vertical heat sealer 161, the rear vertical heat sealer 162 is juxtaposed on an attachment member (not shown) so that the position thereof can be adjusted in a substantially horizontal direction. The longitudinal heat sealer 162 on the rear side is also operable in a direction (front-rear direction) substantially perpendicular to the paper surface in FIG. 4 by a cylinder mechanism (not shown) by a mounting member (not shown). The rear support roller 172 is also supported by a rotating shaft 532 and is the same roller as the front support roller 171.

Furthermore, the cross-sectional view of FIG. 5 shows a configuration example of the forming mechanism 15, the vertical seal mechanism 16, and the packaging film support mechanism 17.
As shown in FIG. 5, the guide rollers 371 and 372 are opposed to each other with the former pipe 151 interposed therebetween. The former brushes 152 and 153 and the former rollers 154 and 155 of the forming mechanism 15 are opposed to each other with the packaging films 421 and 422 interposed therebetween. The vertical heat sealers 161 and 162 of the vertical sealing mechanism 16 are also opposed to each other with the packaging films 421 and 422 interposed therebetween. That is, these opposing members are arranged substantially line symmetrically with respect to the former pipe 151 or the two packaging films 421 and 422.

  The former brushes 152 and 153 are arranged in a state in which the longitudinal direction of each brush portion is directed from substantially vertically obliquely upward to substantially vertically obliquely downward. The brush portions of the former brushes 152 and 153 are in contact with each other with the two packaging films 421 and 422 sandwiched from the outside, and are in contact with the two packaging films 421 and 422 from substantially vertically above.

The front and rear vertical heat sealers 161 and 162 are vertically sealed with the two packaging films 421 and 422 sandwiched from the front and rear direction by operating these two sets of cylinder mechanisms (not shown).
Although not shown, the cylinder mechanism that operates the front vertical heat sealer 161 also operates when the automatic packaging machine 1 stops, and the front vertical heat sealer 161 protrudes forward when the automatic packaging machine 1 is stopped. I am letting. Thereby, at the time of a stop, the packaging film 421 can be separated from the vertical heat sealer 161 serving as a heat source, and the packaging film 421 can be installed or replaced by changing the specification. Furthermore, since a space | interval can be expanded between the vertical heat sealers 161 and 162, the packaging film 421 can be easily passed between them.

  Next, the forming of the two packaging films 421 and 422 by the forming mechanism 15 according to the present invention will be described. Here, the forming operation will be described with reference to FIG. 5 as appropriate.

  The two packaging films 421 and 422 sent through the Σ frame 36 are sent to the guide rollers 371 and 372. Since these guide rollers 371 and 372 are arranged substantially line symmetrically across the former pipe 151, the former pipe 151 is interposed between the two packaging films 421 and 422. The two packaging films 421 and 422 that have passed through the guide rollers 371 and 372 are guided to the former brushes 152 and 153.

  Since the former brushes 152 and 153 are in close contact with each other between the plurality of former-formed former pipes 151, the two guided packaging films 421 and 422 are pressed and brought close to each other. At this time, the former brushes 152 and 153 press the two packaging films 421 and 422 flexibly. More specifically, the former brushes 152 and 153 are pressed against the two packaging films 421 and 422 smoothly from the outside by the elasticity of the brush portions.

  The two packaging films 421 and 422 that are smoothly brought close to each other by the former brushes 152 and 153 are further guided and sandwiched between the former rollers 154 and 155. Since these former rollers 154 and 155 are in close contact as shown in FIG. 5, the two sandwiched packaging films 421 and 422 are pressed in the front-rear direction and overlapped in a close state. In addition, since the former rollers 154 and 155 press the packaging films 421 and 422 on both sides of the former pipe 151, the two packaging films 421 and 422 are in close contact with the surface of the former pipe 151 and are in sliding contact with the surfaces. It is transferred while.

  In this manner, the two packaging films 421 and 422 are formed in the forming mechanism 15 so that the portion sandwiching the former pipe 151 swells and the former pipe 151 is close to each other. At this time, it is clamped by the former brushes 152 and 153 and the former rollers 154 and 155 above the vertical heat sealers 161 and 162, and at the same time by the support rollers 171 and 172 below the vertical heat sealers 161 and 162. Has been. Since the support rollers 171 and 172 are juxtaposed in the width direction of the packaging films 421 and 422, the two packaging films 421 and 422 are given tension in the width direction. In particular, since the upper and lower rollers 154, 155, 171, and 172 of the vertical heat sealers 161 and 162 press between the former pipes 151, the two wrapping films 421 and 422 have a plurality of former pipes 151 and their pipes. It is in close contact with the former pipe 151 along the unevenness therebetween.

  The two formed packaging films 421 and 422 are sent between the vertical heat sealers 161 and 162 in a state of being in close contact with the former pipe 151. Then, a cylinder mechanism (not shown) connected to the front vertical heat sealer 161 pulls the mounting member to which the vertical heat sealer 161 is attached to the rear side. At the same time, a cylinder mechanism (not shown) of the longitudinal heat sealer 162 on the rear side pushes and pushes the attachment member to which the longitudinal heat sealer 162 is attached to the front side. Thus, the vertical heat sealers 161 and 162 vertically seal the two packaging films 421 and 422 between the front and rear sides between the plurality of former pipes 151.

  After the vertical seal, the cylinder mechanisms of the vertical heat sealers 161 and 162 cause the attachment members (not shown) to project and pull back to their original positions by releasing the pull-in / extrusion. Thereby, an interval is generated between the vertical heat sealers 161 and 162, and the packaging films 421 and 422 can be pulled down by the horizontal sealing mechanism 19. Also at this time, the two packaging films 421 and 422 are sandwiched by the former brushes 152 and 153, the former rollers 154 and 155, and the support rollers 171 and 172 above and below the vertical heat sealers 161 and 162, It is stretched in the width direction.

  As described above, in the automatic packaging machine 1 according to the present invention, the support rollers 171 and 172 of the packaging film support mechanism 17 sandwich the vertical seal portion from the front and rear. Since the plurality of support rollers 171 and 172 are arranged substantially horizontally (in the width direction) between the former pipes 151, the packaging films 421 and 422 are urged in a direction approaching each other by being sandwiched by the support rollers 171 and 172. And given tension in the width direction. As a result, the packaging films 421 and 422 are in close contact with the plurality of former pipes 151, and are also in close contact with each other, that is, in the portion where the vertical seal is formed. Therefore, the vertical heat sealers 161 and 162 of the vertical sealing mechanism 16 can perform vertical sealing in a stable state. Therefore, even when pressed by the vertical heat sealers 161 and 162, the wrinkles are not easily moved, and the vertical seal can be formed satisfactorily. In particular, in the vertical multi-row four-side seal automatic filling and packaging machine 1 according to the present invention, since the wide packaging films 421 and 422 such as 50 cm are used, wrinkles are likely to be shifted in the width direction. The ability to reduce wrinkles is a very significant effect.

  Further, when the packaging film support mechanism 17 is provided immediately below the vertical seal mechanism 16, the heat seal films inside the packaging films 421 and 422 remain melted without being cooled when pressed by the support rollers 171 and 172. is there. In this state, the support rollers 171 and 172 press the packaging films 421 and 422 from the front and the back, thereby removing bubbles in the vertical seal portion and extending wrinkles formed in the vertical seal portion. This makes it possible to form a uniform and good vertical seal portion without wrinkles.

  Furthermore, the packaging film support mechanism 17 does not have a heat source unlike the thermocompression bonding mechanisms such as the vertical heat sealers 161 and 162. It is possible to cool the seal portion. Therefore, when the slit mechanism 18 slits the packaging films 421 and 422, the vertical seal portion to be slit is cooled, so that the viscosity of the heat seal film exposed to the cut surface can be reduced. Thereby, a good cut surface can be obtained by a slit having a good sharpness. Therefore, it is possible to manufacture a package that has a good vertical seal and a clean appearance. Further, when the longitudinal seal mechanism 16, the packaging film support mechanism 17, and the slit mechanism 18 are provided in this order as in the present embodiment, such an effect is remarkable.

  A four-sided seal is sometimes applied as a method of giving the package a quality and high-class feeling. In a package with a four-side seal, the appearance, such as the absence of wrinkles and bubbles in the vertical seal part, and the good condition of the cut surface of the vertical seal part, is an element that determines the superiority or inferiority of the four-side sealed package. As an important element. Therefore, in the automatic packaging machine 1 that manufactures a package that is four-side sealed, it is very effective to form a vertical seal as described above.

Embodiment 2 of the Invention
In the second embodiment of the present invention, the case where the roll surface of the support roller is processed so as to be the finished surface of the vertical seal will be described with reference to FIG. FIG. 6 is a plan view showing a configuration example of the roll surface of the support roller.
Since the packaging film support mechanism 17 is provided below the longitudinal seal mechanism 16 in the longitudinal seal portion longitudinally sealed by the longitudinal seal mechanism 16, the heated state is maintained when pressed by the support roller. Therefore, when the roll surface of the support roller is processed with various irregularities as follows, the irregularities can be transferred to the vertical seal portion.

  In FIG. 6A, reference numeral 601 indicates a support roller whose roll surface is linearly processed. Concavities and convexities 621 are formed on the roll surface 611 of the support roller 601 along the vertical seal portion. That is, unevenness 621 is formed on the roll surface 611 of the support roller 601 substantially perpendicular to the axial direction of the rotating shafts 531 and 532 that pivotally support the support roller 601.

  In FIG. 6B, reference numeral 602 indicates a support roller whose roll surface has a grid pattern. On the roll surface 612 of the support roller 602, grid-like irregularities 622 are formed. In other words, the roll surface 612 of the support roller 602 is provided with irregularities 622 along the longitudinal seal portion, and in addition, irregularities 622 that are substantially parallel to the axial direction of the rotary shafts 531 and 532.

  In FIG. 6C, reference numeral 603 indicates a support roller whose roll surface has been cross-machined. The roll surface 613 of the support roller 603 is formed with twill-like irregularities 623. In other words, two types of inclined irregularities 623 with respect to the vertical seal portion are formed on the roll surface 613 of the support roller 603. These two types of inclined irregularities 623 can be irregularities that are line symmetrical on the left and right in the figure.

  Like such support rollers 601 to 603, the vertical seal portion can be made more reliable by performing linear processing, cross-cut processing, cross-cut processing, etc. on the roll surfaces of the support rollers 171 and 172. it can. In particular, when performing linear processing, it is possible to reliably prevent the filling material from leaking out at the vertical seal portion.

Embodiment 3 of the Invention
In Embodiment 3 of the invention, the support roller of the packaging film support mechanism 17 is attached to the rotary shafts 531 and 532 so that the angle can be individually adjusted with respect to the direction in which the vertical seal portion is formed (substantially vertical direction). The case will be described.
The front view of FIG. 7 shows another example of the configuration of the support roller and its surroundings observed from the front side. In FIG. 7, this support roller is indicated by reference numeral 701. As shown in FIG. 7, unlike the support roller 171, the support roller 701 is attached to the rotating shaft 531 in an inclined state. As the support roller 701 is arranged on the outer side (left side or right side), the support roller 701 is more inclined with respect to the substantially vertical direction. These support rollers 701 are inclined so that the lower side extends outward. Although not shown in FIG. 7, the rear support roller paired with the support roller 701 is similarly inclined and attached so that the roller surface and the roller surface of the support roller 701 face each other. Yes.

  As described above, when the support roller 701 is attached so that the lower side faces the outside, the support roller 701 presses the packaging films 421 and 422 along the direction of the roll surface, so that the support roller 701 is supported while being spread outward. can do. Therefore, by adjusting the angle of the support roller 701 so that the lower side is inclined outward, the two packaging films 421 and 422 can be stretched in the width direction to more reliably prevent the vertical seal portion from being wrinkled.

  The front view of FIG. 8 shows another configuration example of the support roller and its surroundings observed from the front side. In FIG. 8, this support roller is indicated by reference numeral 702. In contrast to the support roller 702, the support roller 702 shown in FIG. 8 is inclined so that the lower side is narrowed inward. As the support roller 702 is arranged on the outer side, the support roller 702 is more inclined with respect to the substantially vertical direction. Although not shown in FIG. 8, the rear support roller paired with the support roller 702 is similarly inclined and attached so that the roller surface and the roller surface of the support roller 702 face each other. Yes.

  As described above, when the support roller 702 is mounted so that the lower side faces inward, the support roller 702 presses the packaging films 421 and 422 toward the roll surface, and thus supports the film while narrowing inward. can do. Therefore, by adjusting the angle of the support roller 702 so that the lower side is inclined inward, the two packaging films 421 and 422 are loosened in a substantially vertical direction, and the vertical seal portion is excessively stretched in the width direction. Can be prevented.

The packaging film support mechanism 17 of the automatic packaging machine 1 according to the present invention is provided directly below the vertical sealing mechanism 16 and is provided between the vertical sealing mechanism 16 and the slit mechanism 18. Not limited to this, it is only necessary to be provided at least below the vertical seal mechanism 16.
However, the case where the packaging film support mechanism 17 is provided below the slit mechanism 18 is excluded. Specifically, in this case, after the vertical sealing mechanism 16 performs vertical sealing, when the slit mechanism 18 slits the vertical sealing portion, the cut surfaces of the packaging films 421 and 422 are exposed. When this cut surface is exposed and pressed back and forth by the support rollers 171 and 172 of the packaging film support mechanism 17, a heat seal film such as polyethylene that has melted by thermocompression by the vertical seal mechanism 16 leaks from the cut surface. End up. Therefore, when the leaked heat seal film is cooled, the heat seal film is solidified and welded, and the slit packaging films 421 and 422 are connected again. Thus, it is not preferable to provide the packaging film support mechanism 17 in such an order that the slitted packaging films 421 and 422 may be connected again.

It is a front view which shows the vertical multi-row four-way seal automatic filling and packaging machine in the embodiment of the present invention. It is a side view which shows the vertical multi-row four-way seal automatic filling and packaging machine in the embodiment of the present invention. It is a front view which shows one structural example of the packaging film support mechanism in embodiment of this invention. It is a rear view which shows the example of 1 structure of the packaging film support mechanism in embodiment of this invention. It is a side view which shows one structural example of the packaging film support mechanism in embodiment of this invention. It is a front view which shows the structural example of the support roller in embodiment of this invention. It is a front view which shows the structural example in which the support roller in embodiment of this invention was attached so that angle adjustment was possible. It is a front view which shows the other structural example in which the support roller in embodiment of this invention was attached so that angle adjustment was possible.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical multi-row four-way seal automatic filling and packaging machine (automatic packaging machine), 11 Main body frame, 12 Hopper, 13 Fixed quantity supply mechanism, 14 Shooter, 15 Forming mechanism, 151 Former pipe, 152,153 Former brush, 154 155 Former roller, 16 Vertical seal mechanism, 161, 162 Vertical heat sealer, 17 Packaging film support mechanism, 171, 172 Support roller, 18 Slit mechanism, 181 Slitter, 182 Rotating roller, 19 Horizontal seal mechanism, 191, 192 Horizontal heat Sealer, 20 Cutter mechanism, 21 Discharge tray, 22 Operation panel 601, 602, 603 Support roller, 701, 702 Support roller 40 Raw roll, 41 Sheet film, 421, 422 Packaging film

Claims (5)

A vertical multi-row four-sided automatic filling and packaging machine that manufactures a large number of packages that are packed in a four-side seal by filling the packing film facing the front and rear of the packaging film that is sent substantially vertically downward,
A forming mechanism having a plurality of former pipes for forming the front and rear packaging films into the shape of a packaging bag while being sandwiched between the front and rear packaging films;
A vertical sealing mechanism that is arranged in parallel between the plurality of former pipes and vertically seals the front and rear packaging films,
A packaging film support mechanism that is provided below the vertical sealing mechanism and urges in a direction in which the front and rear packaging films are in contact with each other at a vertical seal portion that is vertically sealed by the vertical sealing mechanism;
A slit mechanism for slitting a vertical seal portion vertically sealed by the vertical seal mechanism;
A vertical multi-row four-way seal automatic filling and packaging machine provided with a horizontal seal mechanism that horizontally seals the longitudinally sealed front and rear packaging films one by one in synchronism with the vertical seal mechanism.   2. The vertical multi-row four-way seal automatic filling according to claim 1, wherein the packaging film support mechanism includes a plurality of pairs of support rollers that are juxtaposed between the former pipes and press the vertical seal portion. Packaging machine.   3. The vertical multi-row four-way seal automatic according to claim 2, wherein a surface of at least one of the plurality of pairs of support rollers is processed to be a finished surface of the vertical seal portion. Filling packaging machine.   4. The vertical multi-row four-side seal automatic filling and packaging machine according to claim 2, wherein the support roller is made of metal, rubber, or plastic.   5. The vertical multi-row four-sided seal automatic filling and packaging machine according to claim 2, wherein the plurality of pairs of support rollers are attached to each of the support rollers so that the angle can be individually adjusted.

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