JP2014162496A - Corner folding device of bag package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corner folding device that is compact with a simple structure, without enlarging an installation space of a horizontal type packaging machine.SOLUTION: A bag package is manufactured by giving an end seal part using an end seal device 4 in a cylindrical packaging material with a product supplied therein, in a horizontal type packaging machine. A corner folding device 7 for shaping the bag package by folding the end seal part (corner) is disposed in a space existing at the side of a bag package carry-out part 6 adjacent to a slipstream side of a packaging machine body part of the horizontal type packaging machine and connected to the slipstream side of the packaging machine body part, and ejecting the manufactured bag package. The bag package is transferred to the side perpendicular to the bag package carry-out part 6 by a transfer plate 53, and is folded in the end seal part by a folding part 60.

Description

  The present invention relates to an ear folding device that folds an ear portion of a bag package manufactured in a horizontal packaging machine.

  Conventionally, a pillow package manufactured by a horizontal bag making filling and packaging machine is often used individually or in a grouped form for distribution in the form as it is manufactured. In order to improve, individual pillow packages are also shaped after production. In particular, the end seal portion (ear portion) of the pillow package and the vicinity thereof are regions where no package is present, and thus are often objects of shaping. In the case of a pillow package in which a rectangular parallelepiped product such as monaka or gold-plated ware is packaged as a package, the appearance is greatly improved by folding the ears, and multiple packages Can be packed efficiently.

  Such an ear folding device that folds the end seal portion of the pillow package to create a rectangular parallelepiped package is a known technique. The ear fold device described in Patent Document 1 includes a fold device that erects and folds the end-sealed ear portion of the end portion of the tubular film whose movement is suppressed by the upper restraining device. When the folding plate is raised, the pressing portion on the upper end side of the ear folding plate presses the ear portion against the packaged object side by the biasing force of the spring, thereby realizing the ear folding.

  An ear shaping device for a pillow package described in Patent Document 2 includes a transfer device for lowering the pillow package transferred from a supply conveyor, and an article storage unit for the pillow package transferred to the transfer device. Is sandwiched by a sandwiching device, and both ears of the pillow package lowered by the transfer device are folded by a folding device. A pair of clamping members of the clamping device pinch the article housing portion in the direction in which both ears of the pillow package are separated, so that the position of the pillow package relative to the folding member is accurately determined, and the pillow package enters between the folding members. In this case, the article accommodating portion hits the bending member and the ear portion is bent without any positional deviation. Since one part of the packaging material from the seal part to the article accommodating part is folded to the side part of the article accommodating part by the sandwiching member, the ear part is folded along the folded part.

  The folding of the ear part of the package with a gusset described in Patent Document 3 is performed by bending the ear part of the package with a gusset downward and bringing the ear part and the packaging film surrounding the packaged object into contact with each other. It consists of adhering a part of the contact area, then carrying it while pinching the ears, and folding it by heating at the time of carrying it. By heating the ear part folded at a predetermined position in a state in which the contact part between the ear part and the packaging film is bonded and integrated, it is intended to be folded on the ear part.

  The bag-folding-body ear bending apparatus described in Patent Document 4 is such that when the bag-packaging body is raised, the front and rear ears are folded downward with the bag-packaging body adsorbed by the adsorption device, and then the bag-packaging body Even if it is a packaged item that is easily deformed, such as fresh confectionery, the packaged item can be deformed by folding both ears into the lower surface of the bag while keeping the packaged bag in the adsorbed state when the bag is transferred horizontally. It aims to bend the ears easily and securely.

  The end seal folding device described in Patent Document 5 folds down the end seals at both ends of a packaged product packaged by a horizontal bag making filling and packaging machine along the side of the product. The folded end seal is prevented from returning to the horizontal by applying heat to the fold and further cooling.

  However, since all of those described in Patent Documents 1 to 5 are configured to extend downstream from the unloading unit that unloads the end-sealed package in the packaging machine, the downstream of the packaging machine. It requires considerable additional installation space on the side. In addition, since a complicated mechanism is used for bending the end seal portion, the cost (parts and assembly) required for manufacturing and installing the bending mechanism (device) is high, and maintenance thereof is difficult. Yes.

JP 2007-106489 A JP 2000-28125 A JP 05-294304 A Japanese Patent Laid-Open No. 04-018217 Japanese Patent Laid-Open No. 01-199806

  Therefore, there is a need for an ear folding device for a bag packaging body that does not take up installation space and does not increase the size of the entire device even when attached to the packaging machine in a horizontal packaging machine such as a horizontal bag making filling and packaging machine. . Further, there is a demand for an ear folding device for a bag package that has a simple mechanism and is low in cost and easy to maintain.

  An object of the present invention is to solve the above-described problem, and to provide an ear folding device for a bag package that does not increase the installation space of a horizontal packaging machine even if it is attached, and has a simple configuration. An object of the present invention is to provide an ear fold device for a bag package that is compact and easy to maintain.

  In order to solve the above-mentioned problems, an ear folding device in a horizontal packaging machine according to the present invention is a packaging machine main body for producing a bag package by forming an end seal part in a cylindrical packaging material supplied with a product therein. And a bag packaging body unloading section connected to the downstream side of the packaging machine main body section for discharging the produced bag packaging body, and folding the end seal section The ear fold device for shaping the bag package is disposed in a space adjacent to the rear side of the packaging machine main body and on the side of the bag package unloading section.

  According to the ear fold device in this horizontal packaging machine, the space that is adjacent to the downstream side of the packaging machine main body part and on the side of the bag packaging body unloading part, in other words, the packaging machine main body part of the horizontal packaging machine; Since the ear fold device is arranged using the corner space that was a dead space that was sandwiched between the sides of the bag packaging body unloading part, it is further placed on the downstream side of the bag packaging body unloading section of the horizontal packaging machine. Compared with the case where the ear folding device is arranged to extend and extend, the increase in the length of the horizontal packaging machine can be suppressed, and the ear folding device can be efficiently attached in a space.

  In the ear folding device in the horizontal packaging machine, the ear folding device is disposed on the downstream side of the power supply unit or the mechanism / transmission unit of the packaging machine main body and has a depth of the power supply unit or the mechanism / transmission unit. A length within the range can be provided, and the bag packaging body from the bag packaging body carrying-out portion can be fed into the ear folding device with its conveyance direction changed. With the arrangement of the ear folding device, the ear folding device can be attached without enlarging the substantial installation space of the horizontal packaging machine. Since the ear folding device is disposed on the side of the bag packaging body carry-out portion, the bag packaging body is converted into a right angle and fed into the ear folding device.

  Further, the ear folding device in this horizontal packaging machine has a stopper part for stopping the movement of the bag package carried out by the bag package carrying-out part, and a direction for carrying out the bag package stopped by the stopper part. It is provided with the transfer part which transfers in the direction which cross | intersects at right angles, and the folding part which folds the said end seal part of the said bag packaging body currently transferred by the said transfer part, It is characterized by the above-mentioned. According to the ear fold device in this horizontal packaging machine, the bag packaging body carried out by the bag packaging body carrying-out section is stopped by the stopper portion, and the stopped bag packaging body is transported in a direction perpendicular to the carrying-out direction. The end seal part of the bag packaging body being transferred can be folded by the folding part.

  In the ear fold device in the horizontal packaging machine, the stopper portion includes a stopper plate that can be opened and closed on a carry-out path of the bag package carrying-out portion, and the stopper plate corresponds to when the bag package is a good product. Then, the bag package is stopped by closing the carry-out path, and the carry-out path is opened to allow the bag package to pass through when the bag package is defective. Only the non-defective product can be selectively stopped on the unloading path by opening and closing the unloading path of the unpacking part of the bag packaging body with the stopper plate according to whether the packaged bag is a good product or a defective product. In addition, the transfer unit moves while pressing the bag package in a direction orthogonal to the carry-out path from the carry-out path of the bag package carry-out part, and rises after reaching the folding part and the carry-out path And a transfer plate that descends on the carry-out path and returns to the transfer standby position. By the cyclic operation of the transfer plate, the bag packaging body which is a non-defective product on the carry-out path of the bag packaging body carrying-out section can be fed into the folding section.

  In the ear folding device in this horizontal packaging machine, the folding part is a mode that sandwiches the transfer path of the transfer part, and forms a pair of a front side folding part and a back side folding part corresponding to the left and right sides of the bag packaging body, respectively. And the folding portion on each side includes a swinging member that is driven to swing and a heater block attached to the swinging member, and the swinging member swings. Thus, the end seal portion of the bag package can be folded by pressing the heater block against the bag package. When the heater block is pressed against the bag package by the swinging of the swinging member, the end seal portion is folded while being heated, and a crease is attached. Further, the folding part includes a folding part drive cylinder for swinging the swinging member, the swinging member is swingably supported via a parallel link mechanism, and the swinging member is connected to the folding part. By moving the output rod of the drive cylinder back and forth, it can be swung while maintaining its posture through the parallel link mechanism. By swinging the swinging member via the parallel link mechanism, the folded end surface of the heater block can approach the bag package body and be folded in contact with the end seal portion without changing the initially set posture.

  Further, in the ear folding device in the horizontal packaging machine, the ear folding device may include a cooling unit that cools the end seal portion heated by the heater block of the folding portion. When the folded end seal portion is heated in order to add a crease at the folded portion, the folding becomes wider when the heater block is separated. By cooling the heated portion with the cooling unit, it is possible to prevent the spread of folding. Furthermore, the cooling unit includes a pair of metal plates that are in contact with the end seal portion folded at the folding portion and sandwich the bag packaging body, and each of the metal plates is inserted into the bag packaging body. The incoming entrance side is formed in a tapered portion on the outer side, the lower portion of the tapered portion is formed in a mode of spreading outward, and the lower portion can be cut off obliquely. The metal plate can efficiently absorb heat from the end seal part, and it can be folded into the cooling part smoothly without being caught by the ear part that tends to spread after folding due to the shape of the taper on the entrance side. Can do.

  Further, in the ear folding device in the horizontal packaging machine, the ear folding device can include an upper restraining portion that suppresses the upper side of the bag packaging body in correspondence with the folding portion. By suppressing the upper side of the bag wrapping body at the upper holding portion, the bag wrapping body is prevented from being lifted during the folding operation of the end seal portion at the folding portion. Further, the upper holding part may be provided with an upper holding plate in which a tapered part warped upward is formed at least on the entry port side of the bag package. A taper part contacts the upper surface of a bag packaging body in order, and prevents a hook with a bag packaging body.

  The horizontal wrapping machine to which the ear folding device is applied is formed into the cylindrical packaging material by applying center seals to both side edge portions of the belt-shaped packaging material, and the product is fed into the cylindrical packaging material fed by paper. It can be said that it is a horizontal type bag making filling and packaging machine that manufactures the bag package by forming the end seal part before and after the paper feeding direction of the product. Horizontal bag-filling and packaging machines are versatile packaging machines that can package individual products at high speed. Can be manufactured efficiently at high speed.

  Since the present invention is configured as described above, it is folded into a space that is a conventional dead space that is adjacent to the rear side of the horizontal packaging machine main body and is located on the side of the horizontal bag package carrying-out portion. A device is provided and can be attached without requiring extra space when the ear folding device is applied to a horizontal packaging machine. Further, since the folding portion of the ear folding device is configured by a simple and compact mechanism such as a swing mechanism, the cost is low and maintenance is easy.

FIG. 1 is a view showing an example of a horizontal bag making and packaging machine to which an ear folding device for a pillow package according to the present invention is applied. FIG. 2 is a perspective view showing an example of a mechanism of a discharge unit of the horizontal bag making filling and packaging machine shown in FIG. 1 and an ear folding device connected thereto. FIG. 3 is an enlarged view showing a stopper portion of the ear folding device shown in FIG. 4 is an enlarged perspective view showing details of the folding portion of the ear folding device shown in FIG. FIG. 5 is an enlarged view showing a part of the structure of the folding portion shown in FIG. FIG. 6 is an operation explanatory view for explaining the folding operation of the folding portion of the ear folding device shown in FIG. 2. FIG. 7 is a diagram showing another embodiment of the folding portion. FIG. 8 is an enlarged view showing details of the cooling unit of the ear folding device shown in FIG. 2. FIG. 9 is a flowchart for explaining the operation of the folding device. FIG. 10 is a side view of a horizontal bag making filling and packaging machine. FIG. 11 is a plan view of the horizontal bag making filling and packaging machine shown in FIG.

  Hereinafter, an embodiment of an ear folding device for a pillow package according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a view showing an example of a horizontal bag making and filling machine to which an ear folding device for a pillow package according to the present invention is applied, wherein (a) is a plan view thereof and (b) is a side view thereof. FIG. 2 is a perspective view showing an example of a mechanism of a discharge portion disposed on the downstream side of the end seal device of the horizontal bag making filling and packaging machine shown in FIG. 1 and an ear folding device connected to the discharge portion. .

  As for the horizontal bag making filling and packaging machine 1 shown in FIG. 1, the main body of the horizontal bag making filling and packaging machine itself may be a conventionally known one. As shown in FIG. 10 which is a side view and FIG. 11 which is a plan view, as a basic configuration of the horizontal bag making filling and packaging machine, a belt-like packaging material Fw fed out from an original roll Fr loaded on a roll shaft is used. The film feeding section 3 having a former 22 which is conveyed in the longitudinal direction of the belt and is bent into a substantially cylindrical shape by bringing both side edge portions Fe and Fe of the belt-like packaging material Fw close to each other, and the bent belt-shaped packaging material Fw A product supply unit 2 that feeds the package (product) P at regular intervals, and a center seal device that performs center sealing on both side edge portions Fe and Fe of the bent strip-shaped packaging material Fw to form a cylindrical packaging material Ft And an end seal device 4 that performs an end seal in a direction crossing at a position between the adjacent packages P and P with respect to the cylindrical packaging material Ft having the package P inside. The end seal device 4 can incorporate a cutter device, which will be described later, for cutting the cylindrical packaging material Ft in the middle of the end seal portion (ear portion) Se. The product supply unit 2, the film feeding unit 3, and the end seal device 4 are driven separately by a servo motor. The control device 5 operates these devices 2 to 4 with timing. By such drive control, the band-shaped packaging material Fw is sealed to produce a bag, and a bag package (pillow package) Bp in which the article to be packaged P is stored is produced. The bag packaging body Bp manufactured by the end seal device 4 applying the end sealing portion Se is carried out by the bag packaging body carrying-out portion 6 (FIG. 1) provided with a carry-out conveyor.

  The film feeding unit 3 of the horizontal bag making filling and packaging machine feeds and feeds the belt-shaped packaging material Fw from the raw fabric roll Fr by a paper feeding mechanism including a paper feeding roller 21 and a paper drawing roller 23. The paper feed roller 21 is driven by a film feed servomotor SM2A. The paper drawing roller 23 includes left and right rollers 23a and 23b driven by a film feeding servomotor SM2B. The belt-like packaging material Fw is placed on the paper by sandwiching both side edge portions Fe and Fe of the packaging material between the roller peripheral surfaces. Pull. The former 22 is formed into a substantially closed curved shape by bringing both side edge portions Fe and Fe of the belt-shaped packaging material Fw close to each other. The center sealer 24 constituting the center seal device includes seal rollers 24a and 24b driven by a film feed servomotor SM2C. The sealing rollers 24a and 24b perform center sealing by sandwiching and heating and pressurizing both side edge portions Fe and Fe of the belt-shaped packaging material Fw formed in a curved shape between the circumferential surfaces of the rollers while rotating, and the center sealing portion Sc. The cylindrical packaging material Ft is transported downstream while forming. The curved packaging material is formed on the cylindrical packaging material Ft by forming the center seal portion Sc.

  The product supply unit 2 for supplying the product to be packaged P is a supply conveyor provided with an endless chain 12 to which pusher attachments 11 that push and convey the rear part of the product to be packaged P are attached at predetermined intervals. The endless chain 12 is wound around sprockets 14 and 14 disposed at front and rear ends in the transport direction, and the rotation output of the supply conveyor drive servo motor SM1 is transmitted to the downstream sprocket 14 via a power transmission mechanism. The sprocket 14 is driven to rotate. Since the endless chain 12 meshes with the teeth of the sprocket 14, the endless chain 12 is also driven by the rotation of the sprocket 14. In the product supply unit 2, the pusher attachment 11 conveys the article to be packaged P while pushing it, and sends the article to be packaged P into the former 22. In the former 22, the strip-shaped packaging material Fw is formed in a substantially closed curved shape. Therefore, on the outlet side of the former 22, the package P is sent out together with the packaging material in a state of being placed inside the curved packaging material. It is. The supply device 2 includes a supply origin sensor 10 that detects the pusher attachment 11.

  The end seal device 4 includes a pair of heater blocks 28a and 28b that are vertically opposed to each other with a transfer path for the cylindrical packaging material Ft interposed therebetween, and the heater blocks 28a and 28b sandwich the cylindrical packaging material Ft. In this state, while moving in the transfer direction (horizontal direction) in accordance with the transfer of the cylindrical packaging material Ft, the cylindrical packaging material Ft is heat sealed to form the end seal portion (ear portion) Se. During the movement, a cutter (not shown) built in the heater block 28a protrudes toward the heater block 28b to cut the central portion of the end seal portion Se, and thereafter, the cutters are pulled away and separated from each other. The two heater blocks 28a and 28b that are separated from each other again come into contact with each other again in the next packaging cycle and move horizontally, and repeat the above-described revolving trajectory. Such a system of the end seal device in which the heater blocks 28a and 28b move along the revolution path is referred to as a box motion system. Reference numeral 27 denotes an end sealer origin sensor.

  In the box motion type end seal device 4, as shown in the figure, a servo motor SM3A for vertical drive for moving the heater blocks 28a and 28b in the meshing direction without using a cam, and feeding of a packaging material are used. A plurality of drive motors such as a horizontal drive servo motor SM3B for moving back and forth in the direction are provided, and by operating these servo motors at an appropriate timing, the vertical movement and the horizontal movement are synthesized to form a heater block 28a. , 28b is revolved. Upon receiving signals from the supply origin sensor 10, the mark sensor 20, and the end sealer origin sensor 27, the control device 5 controls the supply conveyor drive servo motor SM <b> 1 of the supply device 2 and the paper feed roller 21 of the film feed device 3. Servomotor SM2A for driving film, SM2B for film feeding for driving paper drawing roller 23, SM2C for film feeding for driving center sealer 24, and servomotor for driving heater blocks 28a and 28b vertically Drive control with timing of SM3A and servo motor SM3B for horizontal drive is performed, and these devices 2 to 4 are operated while maintaining a predetermined timing.

  1A is a plan view of the horizontal bag making filling and packaging machine 1, and FIG. 1B is a side view of the horizontal bag making filling and packaging machine 1 shown in FIG. As shown in FIG. 1, the horizontal bag making and filling and packaging machine 1 is manufactured with a product supply unit 2 that supplies a product to be packaged, and a packaging machine main body unit 30 that feeds and heat-seals a cylindrical packaging material. Since the bag packaging body discharge section 6 for discharging the bag packaging body is aligned in the longitudinal direction thereof, that is, in the direction along the supply direction of the article to be packaged P and the feeding direction of the packaging material, the horizontal bag making filling The packaging machine 1 is essentially a horizontally long packaging machine. Moreover, the packaging machine main body 30 that performs heat sealing and timing control of the horizontal bag making and packaging machine 1 extends on the extension of the product supply unit 2 and is stretched on the back side of the packaging working unit that performs heat sealing. As shown, a power supply unit 31 and a mechanism / transmission unit 32 are provided. Therefore, the corner space that is adjacent to the downstream side of the packaging machine main body 30 and that is located on the side of the bag packaging body discharge unit 6 is an area that is the dead space DS of the horizontally long bag-filling packaging machine 1. is there. The ear fold device 7 according to the present invention is installed by using an area that was a dead space DS on the side of the bag package discharge unit 6. The ear folding device 7 is also arranged on the downstream side of the power supply unit 31 or the mechanism / transmission unit 32 of the packaging machine main body 30 and has a length within the range of the depth of the power supply unit 31 or the mechanism / transmission unit 32. I have. By efficiently using such a space, the ear folding device 7 can be connected to the bag package discharge unit 6 without making the horizontal bag making and filling machine 1 further horizontally long.

  As shown in FIG. 2, a pillow package manufactured by applying an end seal to the tubular packaging material by the end seal portion 4 is carried out downstream of the end seal portion 4 of the horizontal bag making filling and packaging machine 1. A bag package unloading unit 6 is provided. The bag packaging body carry-out unit 6 includes a carry-out conveyor 26 attached in a manner attached to the packaging machine main body 30. The ear fold device 7 includes an upper frame 8 and a lower frame 9 disposed in the corner space, and the upper frame 8 includes a front-side upper frame 8a and a back-side upper frame 8b. The upper surface of the lower frame 9 extends flush with the transport surface of the carry-out conveyor 26.

  The ear fold device 7 stops the movement of the bag packaging body carried out by the bag packaging body carrying-out section 6, and transfers the bag packaging body stopped by the stopper portion 40 in a direction perpendicular to the carrying-out direction. The folding part 60 for folding the end seal part of the bag package being transferred by the feeding part 50, the cooling part 80 for cooling the part heated in the folding part 60 for folding, and the folding part 60. Correspondingly, an upper restraining portion 90 for restraining the upper side of the bag package is provided. The respective parts 40, 50, 60, 80, 90 constituting the ear folding device 7 are installed in association with the upper frame 8 and the lower frame 9. Moreover, it is preferable to cover the whole with the transparent case from the viewpoint of hygiene.

  3 is an enlarged view of the stopper portion 40 of the ear wrapping device 7 of the pillow package shown in FIG. The left side (a) of FIG. 3 is a side view showing a state where the stopper plate is lifted and the stopper action is off, and the right side (b) is a state where the stopper plate is lowered and the stopper action is on. FIG. The stopper portion 40 includes a stopper driving cylinder 41 attached to the front upper frame 8a, a lever 44 whose base end portion is pivotally attached to a distal end portion of a rod 42 which is an output member of the stopper driving cylinder 41, a lever The stopper block 46 is provided with a corner portion pivotally connected to the tip end portion 44 by a connecting pin 45. The stopper block 46 is rotatably supported on the near-side upper frame 8a side by a rotation support shaft 47 at a corner portion opposite to the diagonal. In addition, a stopper plate 48 is attached to the stopper block 46 on the rotating tip side, that is, on the connecting pin 45 side.

  As shown in FIG. 3A, the stopper unit 40 of the ear fold device 7 has a stopper block 46 and a stopper plate 48 attached to the stopper block 46 when the stopper driving cylinder 41 retracts the rod 42 to the retracted position. The stopper plate 48 is retracted upward, and the unloading path of the unloading conveyor 26 is opened. At this time, the stopper portion 40 is in a state in which the stopper action is off, and an empty bag that does not contain defective packages such as defective seals and products conveyed on the carry-out conveyor 26 is stopped by the stopper plate 48. Without being passed through, it is discharged from the carry-out conveyor 26 as it is. On the other hand, as shown in FIG. 3B, in a state where the stopper drive cylinder 41 advances the rod 42 to the forward movement position, the stopper plate 48 is lowered downward to close the carry-out path of the carry-out conveyor 26. . At this time, the stopper portion 40 is in a state in which the stopper action is on, and the normal bag package conveyed on the carry-out conveyor 26 is stopped by the stopper plate 48. The stopper plate 48 may be of any mechanism as long as it can be opened and closed, and may be a direct-acting configuration that can move from the upper side to the lower side instead of the repelling / lowering method.

  As shown in FIG. 2, the transfer unit 50 of the ear folding device 7 includes a transfer air cylinder 51 that is appropriately attached to the upper frame 8, and a transfer plate upper and lower air cylinder 52 that is attached to the output tip of the transfer air cylinder 51. And a transfer plate 53 attached to the output tip of the transfer plate upper and lower air cylinders 52. When the output of the transfer plate upper and lower air cylinders 52 is turned on above the carry-out path of the carry-out conveyor 26 and the output front end has advanced, the transfer plate 53 descends to the position just above the carry-out path of the carry-out conveyor 26 and occupies the transfer standby position. Thus, the transfer plate 53 can come into contact with a normal bag package of the carry-out conveyor 26. In this state, when a normal bag package conveyed by the carry-out conveyor 26 is stopped by the stopper plate 48 of the stopper portion 40, the transfer air cylinder 51 is activated, and the transfer plate 53 is stopped by the stopper plate 48. The formed bag package is transferred to the folding section 60 while being pushed in a direction orthogonal to the carry-out path of the carry-out conveyor 26. When the transfer plate 53 transfers the bag package to the folding portion 60, the transfer plate upper and lower air cylinders 52 raise the transfer plate 53, and the transfer air cylinder 51 operates in this state, so that the transfer plate 53 is located above the carry-out path. , And further descends on the carry-out path and returns to the original transfer standby position. Thereafter, by repeating this operation, the transfer unit 50 sequentially feeds normal bag packages into the folding unit 60 which is the main component of the ear folding device 7 while changing the conveying direction.

  4 to 6 show details of the folding part 60 of the ear folding device 7 shown in FIG. 2, FIG. 4 is an enlarged perspective view showing details of the folding part 60, and FIG. FIG. 6 is an enlarged view showing a part of the structure, and FIG. 6 is an operation explanatory view for explaining the folding operation. The folding part 60 is a front side folding part that forms a pair on the front side and the back side in correspondence with the left and right sides when viewed in the direction of transport of the bag packaging body so as to sandwich the transport path of the transporting section that transports the bag packaging body. 61 and a back side folding part 62 are provided. Since the near side folding part 61 and the far side folding part 62 are configured and arranged in a mirror image relationship, only the near side folding part 61 will be described below.

  In the front side folding part 61, the front side upper frame 8 a includes a horizontal frame part 63 and a vertical frame part 64 connected in a manner to hang down on the transfer path side of the horizontal frame part 63. A folding part drive cylinder 65 is attached to the horizontal frame part 63 of the front upper frame 8a. The output rod 66 of the folding portion drive cylinder 65 extends below the horizontal frame portion 63 and outputs so as to advance and retract in the vertical direction. A swing member 67 is connected by a link mechanism between the vertical frame portion 64 of the front upper frame 8a and the output rod 66 of the folding portion drive cylinder 65. The swing member 67 is connected to the vertical frame portion 64 so as to be swingable by a parallel link mechanism 68 having levers 69 and 69 parallel to each other, and is connected to the output rod 66 by a single lever 70. It is connected so that it can swing. A heater block 72 as a folding heater is attached to the swing member 67 via a heat insulating member 71 at its lower end. In FIG. 4, the back-side upper frame 8b is drawn away from the front-side upper frame 8a than the state shown for the vertical frames 64, 64 in FIGS.

  A structure for swinging the swinging member 67 of the folding part 60 is shown as an enlarged view in FIG. FIG. 5A shows a state when the output rod 66 that is an output member of the folding portion drive cylinder 65 is retracted (raised), and FIG. 5B shows a state when the output rod 66 is advanced (lowered). Indicates the state. In the parallel link mechanism 68, the levers 69 and 69 are rotatably supported by the rotation support shafts 73 and 73 with respect to the vertical frame portion 64, and the connecting pins 74 and 74 are connected to the swing member 67. Are pivotally connected. The lever 70 is rotatably connected to the output rod 66 by a connecting pin 75, and the upper rotation support shaft 76 of the two rotation support shafts 76, 76 is connected to the swing member 67. Are pivotally connected. The connection pins 74 and 74 are coaxial with the rotation support shafts 76 and 76, and can also serve as a part of the rotation support shafts 76 and 76. The position of the output line where the output rod 66 of the folding part drive cylinder 65 advances and retreats is offset from the swing member 67, and the lever 70 connects the output rod 66 and the swing member 67 so as to fill the offset. Yes.

  The operation of the swing member 67 of the folding portion 60 is shown in FIG. FIG. 6A is a view showing a state before the folded portion folds the ear portion of the pillow package, and FIG. 6B is a view showing a state where the folded portion is folded in the ear. In the swinging member 67, the output rod 66 retreats with the output of the folding portion drive cylinder 65, and the levers 69 and 69 of the parallel link mechanism 68 jump slightly around the rotation support shafts 73 and 73 from the horizontal. From the state, the output rod 66 moves forward, and the levers 69 and 69 are swung within a rotation range until the lever 69 swings obliquely downward. The lever 70 rotates from the inclined posture to the horizontal state in accordance with the movement of the output rod 66 and the parallel link mechanism 68 (FIG. 5). Thereby, the swinging member 67 performs an operation of approaching each other while descending while maintaining the posture by the parallel link mechanism 68. That is, the swinging member 67 swings from the upper side to the lower side of the transfer path of the bag packaging body Bp, and the heater blocks 72 and 72 maintain the folded end surfaces vertically while maintaining the end seal portion (hereinafter referred to as “ The bag wrapping body Bp is clamped in a state in which the ears Se and Se are further folded downward. The state in which the lever 70 is horizontal is a state in which the swing member 67 and the heater block 72 are closest to the bag package Bp, and the heater block 72 is in the ear portion Se, Fold Se. Since each heater block 72 has a built-in heater, the ears Se and Se are heated in the folded state, and the folded state of the ears Se and Se is maintained even when the heater blocks 72 and 72 are separated. The Further, since the heater blocks 72 and 72 are sandwiched from both sides of the bag packaging body Bp, the heater blocks 72 and 72 are also provided with a function (centering function) for positioning the bag packaging body Bp at the center of the transfer path of the transfer section 50.

  FIG. 7 shows another embodiment of the folding portion. The swing mechanism is not limited to the mechanism shown in FIGS. 5 and 6, and may be any mechanism that can swing from the upper side to the lower side by driving the air cylinder. In the example shown in FIG. 7, the same reference numerals are given to members used in the same manner as the embodiment shown in FIGS. 4 to 6, and a repetitive description thereof will be omitted. The left half of FIG. 7 shows a state before the heater block 72 hits the bag packaging body Bp, and the right half shows an ear-folded state where the heater block 72 hits the bag packaging body Bp. The air cylinder 77 is rotatably connected to the frame via a connecting pin 79a. An output rod 78a of the air cylinder 77 is connected to a lever 69 of the parallel link mechanism 68 via a connecting member 78b and a connecting pin 79b. , 69 are directly connected to the lower lever 69. By synchronizing the outputs of both air cylinders 77 and 77, the heater blocks 72 and 72 hit the both sides of the bag packaging body Bp while maintaining the folded end face vertically, folding the ears Se and Se, and heating to fold the folds. Can be attached.

  FIG. 8 shows an enlarged detail of the cooling unit 80 of the ear folding device 7 shown in FIG. 8A is a top view of the cooling unit, FIG. 8B is a cross-sectional view of the cooling unit at positions A and B, and FIG. 8C is a side view of the cooling unit. The cooling unit 80 is positioned downstream of the folding unit 60 (FIG. 2), and a pair of metals disposed at positions sandwiching the bag packaging body Bp applied while the ear folds are heated by the heater blocks 72 and 72 from both left and right sides. It consists of plates 81,81. The metal plates 81 and 81 generally have good thermal conductivity and can efficiently dissipate heat absorbed from the ears Se and Se to the atmosphere. The intrusion port portion of the bag package Bp has tapered portions 82 and 82 that spread outward, and the lower portions of the tapered portions 82 and 82 are formed to spread outward, and the lower portions 83 and 83 are formed. Cut out diagonally. That is, the lower end portions of the taper portions 82 and 82 are obliquely cut out, and are formed in a twisted shape so as to form an eight shape when viewed from the front. The ears Se and Se folded at the folding part 60 are creased but not sealed, so that the heater blocks 72 and 72 are slightly spread and become slightly open. Therefore, in order to fold down the ears Se and Se that are spread out again at the inlet of the cooling unit 80, the intrusion port portion of the bag packaging body Bp of the metal plates 81 and 81 is provided with the above-described shape. By forming a notch in the lower parts 83 and 83 so as to have an eight-letter shape when viewed from the front, the bag package Bp transferred as shown by the arrow in FIG. The ears Se and Se are folded down by twisting, and smoothly enter the cooling unit 80 without being caught. The ears Se and Se heated by the heater blocks 72 and 72 are cooled while passing through the metal plates 81 and 81 while being in contact with the metal plates 81 and 81, and finished in a nicely folded form.

  The upper holding portion 90 shown in FIG. 2 includes an upper holding plate 91 that is disposed above the bag packaging body Bp between the folding portion 60 and the cooling portion 80. A part of the upper holding plate 91 is shown in FIGS. 2 and 4. The relationship with the bag package is shown as a cross-section in FIGS. The upper restraining plate 91 has an effect of restraining the upper part when the ears Se and Se in the folding part 60 are folded. That is, the upper holding plate 91 is in contact with the upper surface of the bag wrapping body Bp on the transfer path to prevent the bag wrapping body Bp from being lifted from the transfer path during the ear folding operation. The upper holding portion 90 is also provided with a height adjusting mechanism, and the installation height of the upper holding plate 91 from the road surface of the transfer path can be adjusted according to the type of product to be packaged. A taper portion 92 that warps upward is formed at least on the entrance side of the bag package, preferably at both ends, in the transfer direction of the transfer portion 50 of the upper holding plate 91. Due to the tapered portion 92, the upper holding plate 91 comes close to the bag packaging body Bp from above as the bag packaging body Bp is transferred on the lower frame 9. The tapered portion 92 also prevents the transported bag package Bp from being caught by the upper restraining plate 91 when approaching and entering the upper restraining portion 90.

  The back side upper frame 8b and the cooling unit 80 of the folding unit 60 are provided with a mechanism capable of adjusting the position according to the type of product (product width dimension). Although a detailed illustration is omitted as the position adjustable mechanism, a mechanism utilizing advance and retreat of the screw with respect to the nut can be used. The back side upper frame 8b can advance and retreat with respect to the front side upper frame 8a, and the back side metal plate 81 can advance and retreat with respect to the front side metal plate 81.

  FIG. 9 shows a flowchart for explaining the operation of the ear folding device. An end sealer operation (step S1; abbreviated as “S1”, the same shall apply hereinafter) is performed, and it is determined whether or not the manufactured bag package Bp is a non-defective product (S2). If it is determined in S2 that the bag package Bp is a defective product, the stopper drive cylinder 41 is moved backward in the stopper portion 40, the stopper plate 48 jumps up, and the defective product is carried out as it is on the carry-out conveyor 26 (S3). ). If it is determined in S2 that the bag package Bp is a non-defective product, the timer 1 is started (S4), and it is determined whether or not the predetermined time has expired (S5). After a predetermined time determined by the timer 1, the transfer plate 53 is lowered by the operation of the transfer plate upper and lower air cylinders 52 in the transfer unit 50 (S6), and the transfer air cylinder 51 is further operated to move the bag package Bp to the folding unit 60. It is transferred (S7). When the transfer of the bag package Bp is completed, the transfer plate 53 is raised by the operation of the transfer plate upper and lower air cylinders 52 (S8), and the transfer plate 53 starts returning to the standby position by the operation of the transfer air cylinder 51 ( S9). After the transfer, the bag packaging body Bp starts the operation of the folding portion 60 (the swinging member 67 swings downward) at a predetermined time (S10). With the start of swinging, the timer 2 is started (S11), and it is determined whether or not a predetermined time has elapsed (S12). After a predetermined time determined by the timer 2, it is determined that the folding of the ears Se and Se by the folding unit 60 is completed, and the swinging member 67 is swung upward (S13). Thereafter, the bag package Bp is further transferred, and sandwiched between the metal plates 81 and 81 by the cooling unit 80, and the heated ears Se and Se are cooled (S14). The bag package Bp with the ears Se and Se cooled is discharged from the ear folding device 7.

DESCRIPTION OF SYMBOLS 1 Horizontal type bag making filling packaging machine 2 Product supply part 3 Film feed part 4 End seal device 5 Control apparatus 6 Bag package body delivery part 7 Ear folding device 8 Upper frame 9 Lower frame 8a Front side upper frame 8b Back side upper frame 10 Supply Origin sensor 11 Pusher attachment 12 Endless chain 14, 14 Sprocket 20 Mark sensor 21 Paper feed roller 22 Former 23 Paper drawing roller 23a, 23b Roller 24 Center sealer 24a, 24b Seal roller 26 Unloading conveyor 27 End sealer origin sensor 28a, 28b Heater block DESCRIPTION OF SYMBOLS 30 Packaging machine main body part 31 Power supply part 32 Mechanism | transmission part 40 Stopper part 41 Stopper drive cylinder 42 Rod 43 Connection pin 44 Lever 45 Connection pin 46 Stopper block 47 Rotation support shaft 48 Stopper plate 50 Transfer part 51 Transfer air cylinder 52 Transfer plate upper / lower air cylinder 53 Transfer plate 60 Folding part 61 Front side folding part 62 Back side folding part 63 Horizontal frame part 64 Vertical frame part 65 Folding part drive cylinder 66 Output rod 67 Oscillating member 68 Parallel Link mechanism 69, 69 Lever 70 Lever 71 Heat insulation member 72 Heater block 73, 73 Rotating support shaft 74, 74 Connection pin 75 Connection pin 76, 76 Rotation support shaft 80 Cooling portion 81, 81 Metal plate 82, 82 Taper portion 83 , 83 Lower part 90 Upper restraint part 91 Upper restraint plate 92 Tapered part Fr Original fabric roll Fw Band-shaped packaging material Fe, Fe Both-side edge part Ft Cylindrical packaging material P Packaged goods (product)
Se, Se End seal part (ear part) Sc Center seal part SM1 Servo motor SM2A, SM2B, SM2C for feeding conveyor drive Servo motor SM3A for vertical feed servo motor SM3B Servo motor Bp for horizontal drive Pillow package ( Bag package)

Claims (12)

A wrapping machine main body for manufacturing a bag package by forming an end seal portion in a cylindrical wrapping material supplied with the product therein, and the wrapping machine main body connected to the downstream side of the wrapping machine main body In a horizontal packaging machine provided with a bag packaging body discharge section for discharging a bag packaging body,
An ear fold device that shapes the bag package by folding the end seal portion is disposed in a space adjacent to the rear flow side of the packaging machine main body and on the side of the bag package unloading portion. An ear fold device in a horizontal packaging machine.   The ear folding device is disposed on the downstream side of the power supply unit or mechanism / transmission unit of the packaging machine main body unit and has a length within the range of the depth of the power supply unit or mechanism / transmission unit, 2. The ear folding device in a horizontal packaging machine according to claim 1, wherein the bag packaging body from the bag packaging body carrying-out section is fed into the ear folding device after the transport direction is changed. The ear folding device is
A stopper portion for stopping the movement of the bag packaging body carried out by the bag packaging body carrying-out portion, a transfer portion for transporting the bag packaging body stopped by the stopper portion in a direction perpendicular to the carrying-out direction, and The ear folding device for a horizontal packaging machine according to claim 1, further comprising a folding portion that folds the end seal portion of the bag package being transferred by the transfer portion.   The stopper portion includes a stopper plate that can be opened and closed on a carry-out path of the bag packaging body carry-out section, and the stopper plate closes the carry-out path according to the quality of the bag packaging body to make the bag packaging. 4. The ear in a horizontal packaging machine according to claim 3, wherein the body is stopped and the bag packaging body is allowed to pass through by opening the carry-out path when the bag packaging body is defective. Folding device.   The transfer part moves while pressing the bag package body in a direction orthogonal to the carry-out path from the carry-out path of the bag package carry-out part, and rises after reaching the folding part and above the carry-out path 5. The ear folding device for a horizontal packaging machine according to claim 3, further comprising a transfer plate that returns to the transfer path and returns to the transfer standby position.   The folding part includes a front side folding part and a back side folding part that form a pair corresponding to the left and right sides of the bag packaging body in a manner that sandwiches the transportation path of the transportation part, The folding portion includes a swinging member that is swingably driven and a heater block attached to the swinging member. The swinging member swings the heater block to the bag package. The ear folding device in the horizontal packaging machine according to any one of claims 3 to 5, wherein the end seal portion of the bag package is folded by pressing against the bag.   The folding portion includes a folding portion drive cylinder for swinging the swing member, and the swing member is swingably supported through a parallel link mechanism, and the swing member is the folding portion drive cylinder. The ear folding device for a horizontal packaging machine according to claim 6, wherein the output rod is swung while the posture is maintained through the parallel link mechanism as the output rod advances and retreats.   The ear folding device according to claim 6, wherein the ear folding device includes a cooling unit that cools the end seal portion heated by the heater block of the folding unit. .   The cooling unit includes a pair of metal plates that abut against the end seal portion folded at the folding portion and sandwich the bag packaging body, and the bag packaging body enters each of the metal plates. 9. The horizontal type according to claim 8, wherein the intrusion port side is formed in a tapered portion on the outside, the lower portion of the tapered portion is formed so as to spread outward, and the lower portion is cut obliquely. Ear folding device for packaging machines.   The horizontal wrapping machine according to any one of claims 3 to 9, wherein the ear fold device includes an upper restraining portion for restraining an upper side of the bag packaging body corresponding to the folding portion. Ear fold device.   The said upper holding | suppressing part is equipped with the upper holding | suppressing board in which the taper part which curved upwards at least at the entrance side of the said bag packaging body was provided, The ear fold in the horizontal packaging machine of Claim 10 characterized by the above-mentioned. apparatus.   The horizontal packaging machine is formed into the cylindrical packaging material by providing center seals on both side edge portions of the belt-shaped packaging material, and the product is fed into the cylindrical packaging material to be fed by paper, before and after the paper feeding direction of the product It is a horizontal type bag making filling packaging machine which manufactures the said bag packaging body by forming the said end-seal part, The ear folding device in the horizontal packaging machine as described in any one of Claims 1-11 characterized by the above-mentioned. .

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