EP1770018A1 - Machine d'emballage pour remplir des sacs. - Google Patents

Machine d'emballage pour remplir des sacs. Download PDF

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Publication number
EP1770018A1
EP1770018A1 EP06020691A EP06020691A EP1770018A1 EP 1770018 A1 EP1770018 A1 EP 1770018A1 EP 06020691 A EP06020691 A EP 06020691A EP 06020691 A EP06020691 A EP 06020691A EP 1770018 A1 EP1770018 A1 EP 1770018A1
Authority
EP
European Patent Office
Prior art keywords
bag
gas
packaging machine
guide members
grippers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06020691A
Other languages
German (de)
English (en)
Inventor
Shoichi Koga
Kenji Kawamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Jidoki Co Ltd
Original Assignee
Toyo Jidoki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Jidoki Co Ltd filed Critical Toyo Jidoki Co Ltd
Publication of EP1770018A1 publication Critical patent/EP1770018A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/06—Methods of, or means for, filling the material into the containers or receptacles by gravity flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/041—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles acting from above on containers or wrappers open at their top
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/14—Feeding individual bags or carton blanks from piles or magazines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • B65B43/36—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure applied pneumatically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/06—Packaging groups of articles, the groups being treated as single articles
    • B65B5/061—Filled bags

Definitions

  • the present invention relates to a bag-filling packaging machine that includes pairs of grippers for holding supplied bags and holding them in a prescribed attitude, successively performs various packaging operations, including opening the bag mouths, filling the bags with the contents to be packaged, and sealing the bag mouths, and further replaces the gas inside the bags during the process.
  • Bag-filling packaging machines generally perform, during the packaging process, the insertion of a gas blow-in nozzle into the bags through the bag mouths, and the replacement of the air inside the bags with an inactive gas (such as nitrogen gas, for example).
  • an inactive gas such as nitrogen gas, for example.
  • the synchronous system has advantages in that the gas blow-in time period can be made comparatively longer, and gas blow-in can be conducted continuously over that entire time period, and as a result, the gas inside the bags can be replaced more assuredly and stably. With the gas blow-in time period made longer, production efficiency need not be compromised.
  • the object of the present invention is to provide a bag-filling packaging machine that performs gas replacement assuredly and in a stable fashion.
  • the object of the present invention is to provide a bag-filling packaging machine that includes a plurality of pairs of grippers for gripping the edges of both sides of supplied bags and suspendingly holding the bags, at equal intervals along a horizontal endless bag conveyance path, so as to revolvingly move the pairs of grippers in one direction, either continuously or intermittently in each of the such intervals, and so as to successively perform various packaging operations, such as opening the bag mouths, filling the bags with the contents to be packaged, and sealing the bag mouths, on the bags held by the pairs of grippers; and in this type of packaging machine, the present invention assuredly and stably performs gas replacement, without compromising production efficiency, and without impairing the degree of freedom in the packaging operations.
  • a unique structure of the present invention for a bag-filling packaging machine that includes a plurality of pairs of grippers for respectively gripping the edges of both sides of each of the supplied bags and suspendingly holding each bag, the plurality of pairs of grippers being disposed at equal intervals along a horizontal endless bag conveyance path and revolvingly moved in one direction either continuously or intermittently in each of the intervals, and the bag-filling packaging machine successively performing on the bags held by the grippers various packaging operations including opening the bag mouths, filling the bags with the contents to be packaged, and sealing the bag mouths; and in the present invention:
  • the guide members are hollow bodies comprised of tubular bodies or plate-form bodies, and the hollow interiors make gas flow passageways and connected to a gas supply source and/or vacuum source.
  • These guide members have gas passage openings (gas blow-in ports or blow-in ports) at their tip ends or at other suitable places.
  • a pair of such guide members constitute one set, so that they are mutually opened and closed (separation-proximity) with predetermined timing.
  • one guide member is either connected to a gas supply source such that gas supply can be made or stopped , or is connected to a gas supply source and a vacuum source in an interchangeable manner and such that gas supply and vacuum can be made or stopped ; and the other guide member is either connected to a gas supply source such that gas supply can be made or stopped , or is connected to a gas supply source and a vacuum source such that the connection can be switched and such that gas supply and vacuum can be made or stopped , respectively, or further is connected to a vacuum source such that vacuum can be made or stopped.
  • both guide members are connected to a gas supply source, or both of them are connected to a gas supply source and a vacuum source interchangeably, or one guide member is connected to a gas supply source and the other guide member is connected to a vacuum source. It is preferable that the guide member which is connected to the gas supply source is adjustable for its gas blow-in pressure.
  • the guide portions of the guide members when mutually closed (so as to be next to each other), are preferably positioned proximally in such a manner that they are aligned directly in line with a direction of movement of the guide portions and are inserted into a bag in the closed state.
  • the two guide portions When the two guide portions are in the closed state inside a bag, the two guide portions are positioned proximally, aligned in the bag width direction at a position substantially in the center of the bag width direction. In this case, however, the positions of the guide portions are slightly shifted in the bag width direction from the center of the width of the bag.
  • the guide portions of the pair of guide members when they are open and close inside a bag, are moved in mutually opposite directions along circular arc-shaped paths, respectively, in a horizontal plane; and it is preferable that these circular arc-shaped paths be established so that each, in its middle portion, approaches the center of the bag width direction.
  • the guide portions of the guide members mutually are opened inside a bag, such guide portions, as they are moved, along the circular arc-shaped paths, at first approach the center of the bag width direction and then, continuing on, again moved farther away from the center of the bag width direction.
  • the distance between the opened (separated) guide portions is set so that, when the bag size is small, the guide portions stop when they are moved a short distance along the circular arc-shaped paths and when the bag size is large, the guide portions stop when they are moved a long distance along the circular arc-shaped paths.
  • the bag-filling packaging machines of the present invention can be provided with filling hoppers. More specifically, a single filling hopper which is used for a plurality of pairs of grippers, as in the above-described Japanese Patent Application Laid-Open (Kokai) No. 2005-255236 , can be installed at a filling position; or, alternatively, a plurality of filling hoppers which correspond respectively with each one of plurality of pairs of grippers, as in the above-described Japanese Patent Application Laid-Open (Kokai) No. 2004-67224 , can be provides so that such filling hoppers are revolvingly moved together with the corresponding pairs of grippers.
  • the filling hopper(s) is moved with a predetermined timing between the wait position and the lower insertion position, which is provided below the wait position, and is positioned outside the bag mouth in the wait position and is inserted into the bag through the opened bag mouth in the insertion position.
  • the timing of the insertions of the filling hopper(s) is earlier than the filling of the contents to be packaged into the bag(s), and the filling hopper(s) returns to the wait position with appropriate timing after the filling of the contents into the bag completes.
  • the above-described pair of guide members are moved down to the bag mouth holding position before the filling hopper(s) is inserted into the bag, then the guide members are inserted into the bag, and then they are mutually opened (separated) so as to hold the bag mouth opened.
  • the guide members are moved upward after the hopper has ascended.
  • the present invention is applicable to bag-filling packaging machines of the intermittent movement type (a type in which bags held by grippers are moved intermittently, and packaging operations are performed when the bags are stopped and/or when they are moving as seen in the above-described Japanese Patent Application Laid-Open (Kokai) Nos. H7-313128 , 2005-255236 , 2004-67224 and No. 2005-35610 ).
  • the present invention is applicable also to bag-filling packaging machines of the continuous movement type (a type in which bags held by grippers are moved continuously, and packaging operations are performed during that movement as disclosed in the above-described Japanese Patent Application Laid-Open (Kokai) No.
  • guide members are provided so as to correspond respectively to the pairs of grippers, the guide members are designed so that they not only function to keep the bag mouth opened but also function as gas replacement nozzles, the gas replacement time period is set to be long, over which entire time period it is possible to continuously perform blow-in of an inactive gas or the like into the bags and, as necessary, air removal and gas replacement for the bags is performed assuredly and stably for all of the bags.
  • gas replacement can be performed without making the relevant structures overly complex.
  • one of the two guide members can be connected to a vacuum source, or, alternatively, one or both of the two guide members is or are connected to a gas supply source and a vacuum source interchangeably (or so that switching therebetween is possible). Accordingly, blowing in of the gas into the bags and the vacuuming out (removal) of air (gas) from the inside of the bags can be done simultaneously or in an alternating manner.
  • the guide member connected to the gas supply source can be designed so that the gas blow-in pressure is adjustable.
  • the blow-in volume during gas blowing into the bags can be adjusted.
  • gas blow-in and air removal (vacuuming) can be appropriately combined, or the gas blow-in intensity can be suitably altered, so that gas replacement can be performed in an optimal pattern depending upon the type of the contents to be filled or upon the size of bags.
  • the guide portions of the pair of (or two) guide members are opened and closed (separation-proximity) in the interior of each bag, and the positions of the guide portions are preferably set so that, when in the closed state, the two guide portions of the pair of (or two) guide members are positioned close to each other and aligned in the bag width direction substantially at the center of the bag mouth.
  • the space occupied by the two guide portions in the direction perpendicular to the bag width direction is small or narrow; and as a consequence, when the distance between the gripper pair (or the distance between two grippers) is widened and the bag mouth is thus tensioned (pulled) laterally to the left and right with the guide members in the bag, the opening in the bag mouth becomes very narrow; as a result, the inflow of outside air into the bag and the outflow of gas from the bag interior are limited, and thus improved gas replacement can be executed.
  • both guide portions which are closed inside a bag are shifted in the bag width direction from the bag width center position and thus they are not exactly at the center of the bag mouth in terms of the width of the bag. Accordingly, when the two guide portions are open (separation) or close (proximity), when they are moved linearly in a direction perpendicular to the bag width direction as in the conventional opening members, the opened bag mouth would be distorted in the shape of a parallelogram, and such distortion would be relatively larger for the bag is small in width.
  • the guide portions in cases that the guide portions are close to each other, side by side, in the bag width direction at substantially the center of the opened bag mouth and then moved in mutually opposite directions along the circular arc-shaped paths, respectively, in a horizontal plane, and such circular arc-shaped paths are established so that both of them, in the middle, approach the center in the bag width direction, then when the bag width size is small, the movement distance of the guide portions is small, and the opening guide portions will approach the vicinity of the bag width center along the circular arc-shaped paths of the guide portion, and as a result, the distortion in the opened bag mouth will be suppressed.
  • a plurality of pairs of grippers 2 for respectively gripping the left and right edge on both sides of a bag 1 and suspending that bag are provided at equal intervals about the periphery of a round table 3 that revolves intermittently (the arrow indicating the turning direction).
  • guide mechanisms 4 (only the guide members 15 and 16 thereof are shown in Figure 1) for keeping the bag mouth opened are provided on the table 3 so as to correspond, respectively, to each pair of grippers 2.
  • a conveyor magazine type bag feeder 5 at position A; a printing device (a printer 6 only is shown) at position B; a bag mouth opener (suction plates 7 only are shown) at position C; a device for supplying the contents to be packaged (a hopper 8 only is shown) at position D; bag bottom tapping devices 9 at positions E to G, and a gas replacement (gas blow-in) nozzle 11 at position G; a gas removal press device (not shown) and a sealing device (hot plates 12 only are shown) at position H; and further, a cold sealing device (cooling plates 13 only are shown) and a product discharging chute 14 are provided at position I.
  • Position J is an idle position.
  • the guide mechanism 4 includes guide members 15 and 16 that are bent metal pipes; and in addition, metal pipes of slightly smaller diameter that are formed in bent shapes are attached to the tip ends of the guide members 15 and 16 (see Figure 5).
  • the guide members (or two guide members) 15 and 16 function as one set.
  • the guide members 15 and 16 respectively comprise, as seen from Figure 1, arm portions 15a and 16a that extend outward in substantially a radial direction from the center of the table 3, link portions 15b and 16b mutually bent inward, and guide portions 15c and 16c that are at the tip ends of the guide members 15 and 16 and oriented downward.
  • the guide portions 15c and 16c are inserted into bags as will be described below.
  • the hollow interiors of the guide members 15 and 16 are gas flow passageways communicating to a gas supply source (not shown), while the lower ends of the guide portions 15c and 16c are formed with openings that make gas blow-out ports.
  • the guide members 15 and 16 function as gas replacement nozzles (gas blow-in nozzles) in addition to function to keep the bag mouth opened.
  • the guide members 15 and 16 are movable (swing) simultaneously in the up-and-down directions with a predetermined timing ( Figure 2 shows the moved-down guide members 15 and 16 on the left side and moved-up guide members on the right side).
  • Figure 2 shows the moved-down guide members 15 and 16 on the left side and moved-up guide members on the right side.
  • the guide portions 15c and 16c at the tip ends of the guide members 15 and 16 are moved in the up-and-down directions along longitudinal circular arc-shaped paths and also moved in mutually opposite directions along substantially radial directions in the table 3 in a horizontal plane (along horizontal circular arc-shaped paths that will be described subsequently), so that the guide portions 15c and 16c mutually open (when moved away from each other) and close (when moved toward each other).
  • the bag 1 is opened by the suction plates 7 that come in touch with the side surfaces of the bag 1 (at which time the distance in the gripper pair 2 are narrowed), then the guide members 15 and 16 that were until then in the upper position (wait position) swing downward (to the bag mouth holding position that is the at the height (level) of the grippers 2), the guide portions 15c and 16c that were in positions above the bag 1 are brought into the bag, and moreover, the guide members 15 and 16, with a timing that is slightly delayed from the swinging downward thereof, are moved in mutually opposite directions along substantially radial direction of the round table 3, so that the guide portions 15c and 16c, that were closed until then, are opened (or separated).
  • the guide portions 15c and 16c begin to open (moved away from each other), and then open completely (separated from each other) in the bag mouth holding position, and keep the bag mouth in a prescribed opened shape.
  • gas blow-in into the bag is begun from the lower ends (gas blow-out ports (openings)) of the guide portions 15c and 16c.
  • the suction plates 7 stop sucking the side surfaces of the bag and are moved away from the bag 1.
  • the hopper 8 descends from above, a wait position, toward the bag mouth held in an open shape by the guide members 15 and 16, and the lower end of the hopper 8 is inserted, at an insertion position, into the bag mouth, and then the contents 10 to be packaged are dumped into the hopper 8, so that the interior of the bag 1 is filled with the contents, and then the hopper 8 is raised back to its wait position. Meanwhile, while moving from position C to position D, gas blow-in into the interior of the bag continues to be performed, so that gas replacement progresses inside the bag.
  • tapping of the bag bottom is done simultaneously with gas blow-in so as to eliminate bridges in the contents inside the bag, so that gas replacement is promoted. While moving from position D to position E and from position E to position F, gas blow-in into the interior of the bag continues, and gas replacement further progresses inside the bag.
  • a gas replacement nozzle 11 is lowered, and its flat tip end is inserted into the bag 1 through the gap that is formed between the guide portions 15c and 16c.
  • the guide members 15 and 16 immediately swing upward (swinging upward to such degree as not to bump against the gas replacement nozzle 11), so that the guide portions 15c and 16c are extracted from the bag.
  • the distance between the grippers 2 widens, tensioning the bag mouth to the left and right and pulling the bag mouth laterally in opposite directions, thus closing the bag mouth. With the bag mouth thus closed, gas blow-in into the bag is performed by the gas replacement nozzle 11.
  • gas blow-in When gas blow-in is done, as described above, by the guide members 15 and 16, gas replacement is performed with the bag mouth opened by the guide portions 15c and 16c; as a result, there will be a possibility that air outside the bag will intrude in the vicinity of the bag mouth. Accordingly, in order to effect more complete gas replacement, it is preferable that gas blow-in be performed with the bag mouth closed, using the gas replacement nozzle 11. After performing gas blow-in for a prescribed time period by the gas replacement nozzle 11, the gas replacement nozzle 11 is moved upward and is extracted from the bag 1. At this point, the distance between the pair of grippers 2 is widened further, so that the bag mouth of the bag 1 is tensioned to the left and right and the bag mouth is closed completely.
  • the bag mouth is sealed by the hot plates 12; and at position I, the sealed bag mouth is cooled by the cooling plates 13. Then, the gripping by the grippers 2 is released, and the finished bag 1A drops onto the product discharging chute 14 and is discharged to the outside of the packaging machine.
  • the round table 3 is secured to an intermittently turning shaft 21 that is linked to a drive source (not shown) and intermittently turns a prescribed angle at a time.
  • the grippers 2 are provided on the lower surface of the table 3, and they close (to hold the bag) and then open (to release the bag) with a predetermined timing in conjunction with the turning of the table 3.
  • the first parallel link mechanism 23 includes, as best seen from Figure 3, links 25 and 26.
  • One end of each of the links 25 and 26 is rotatably connected to and shaft-supported by the support columns 22, and the other end of each of the links 25 and 26 is connected to a first (lower) linking member 27.
  • a cam roller 28 is rotatably attached on the inner radial side of the linking member 27, a cam roller 28 is rotatably attached.
  • the links 25 and 26 of the first parallel link mechanism 23 are always maintained in parallel.
  • inner radial side is meant the side toward (closer to) the center of the table 3; and by “outer radial side” is meant the side opposite therefrom.
  • outer radial side is meant the side opposite therefrom.
  • the second parallel link mechanism 24 likewise includes links 29 and 30; and one end of each of the links 29 and 30 is rotatably connected to and shaft-supported by the support columns 22, and the other end of each of the links 29 and 30 is connected a second (upper) linking member 31.
  • a cam roller 32 On the inner radial side of the linking member 31, a cam roller 32 is attached so as to be rotatable.
  • the links 29 and 30 of the second parallel link mechanism 24 are always maintained in parallel.
  • the third parallel link mechanism 34 comprises links 35 and 36 and attachment block members 37 and 38.
  • the center part of each of the links 35 and 36 is rotatably connected to and shaft-supported by the attachment plate 33, and both ends of the links 35 and 36 are rotatably linked to the attachment block members 37 and 38.
  • the links 35 and 36 and the attachment block members 37 and 38 are respectively always mutually maintained in parallel.
  • To the attachment block members 37 and 38 are secured to the base portions of the guide members 15 and 16, respectively.
  • a pin 39 is secured to the lower part of the link 36 (see Figure 7), and a tension spring 41 is mounted between the pin 39 and one of the support columns 22, so that the tension spring 41 urges the guide members 15 and 16 in direction that they are closed (or are moved toward each other).
  • the link 26 of the first parallel link mechanism 23 is rotatably shaft-supported between two support columns 22 by a support shaft 42 (see Figure 3) that is secured to that link 26, and the lower end of a lever 43 is rotatably connected to the support shaft 42 outside the support columns 22.
  • a shaft 44 (see Figure 6) secured to the upper end of the lever 43, one end of a linking rod 46 is attached through a joint 45 capable of turning and tilting relative to the shaft 44; and to a shaft 47 (see Figure 7) erected on the upper surface of the link 36 of the third parallel link mechanism 34, the other end of the linking rod 46 is attached, through a joint 48 capable of turning and tilting relative to that shaft 47.
  • a free roller 49 is attached so as to be rotatable.
  • the link 29 of the second parallel link mechanism 24 is rotatably shaft-supported between the support column pair 22 by a support shaft 51 that is secured to that link 29, and the upper end of a lever 52 is secured to the support shaft 51 outside the support columns 22.
  • the lower end of the lever 52 is capable of contacting the free roller 49 from the outer radial side, so that, when the lower end of the lever 52, overcoming the spring (urging) force of the tension spring 41, presses against the free roller 49 from the inner radial side, the guide members 15 and 16 are opened (or moved away from each other).
  • a reciprocating turning shaft 53 is provided in the center of the intermittently turning shaft 21, a reciprocating turning shaft 53 is provided.
  • the reciprocating turning shaft 53 is reciprocally turned (or turned forward and reverse directions) with a predetermined timing by a drive source (not shown).
  • a drive source not shown.
  • the reciprocating turning shaft 53 in synchronization therewith, turns (turns forward) for precisely the same angle as that of the intermittently turning shaft 21; and, when the intermittently turning shaft 21 stops, the reciprocating turning shaft 53 turns back in the reverse direction for the same angle, returning to the original position.
  • the first cylindrical cam 54 has a downward facing cam surface in the outer circumference thereof, against which the cam roller 28 of the first parallel link mechanism 23 is in contact constantly.
  • a second cylindrical cam 55 is attached so that the second cylindrical cam 55 is in a fixed condition in the turning direction (so as not to be rotatable on the shaft 53) and is capable of ascending and descending. Accordingly, the second cylindrical cam 55 is, in the turning direction of the reciprocating turning shaft 53, moved together with the first cylindrical cam 54.
  • the second cylindrical cam 55 has an upward facing cam surface in the outer circumference thereof, and the cam roller 32 of second parallel link mechanism 24 is in contact constantly with this cam surface.
  • the reciprocating turning shaft 53 turns (in reverse direction) so as to return, it activates, at the process positions C and H, the second parallel link mechanism 24, so that the guide members 15 and 16 are opened (moved away from each other) and closed (moved toward each other) by the third parallel link mechanism 34.
  • an upper table 56 is secured; and the center of the upper table 56 is, as seen from Figure 2, supported by the reciprocating turning shaft 53 via a bearing 50.
  • a large gear 57 is rotatably attached; and with the periphery of the large center gear 57, as seen from Figure 5, four small gears 58 of the same size are meshed.
  • Shafts 59 of the small gears 58 (one shaft is referred to by the reference numeral 59a as shown in Figure 3) are supported by bearings 61 (see Figure 2) so as to be rotatable in the upper table 56.
  • switchover valves 66 are provided so as to correspond to each pair of the guide members 15 and 16.
  • a piping connected to the gas supply source and to a filter (which are not shown) is provided in the interior of the reciprocating turning shaft 53 and branched out onto the upper table 56, and the branched pipes 67 of the piping are connected to the switchover valves 66; and further, the switchover valves 66 and guide members 15 and 16 are connected by flexible tubes 68.
  • the cam roller 32 is raised along the cam surface of the second cylindrical cam 55, and the second parallel link mechanism 24 operates, so that the lever 52 swings to the inner radial side toward the reciprocating turning shaft 53, so that the linking rod 46 is moved to the inner radial side, the third parallel link mechanism 34 operates overcoming the spring (urging) force of the tension spring 41, the guide members 15 and 16 are moved mutually opposite directions, and the guide portions 15c and 16c that had been closed until then are opened (separated).
  • the guide portions 15c and 16c begin opening in the course of the guide members 15 and 16 moving down from the wait position to the bag mouth holding position, and then are completely opened after the guide members 15 and 16 reach the bag mouth holding position, thus keeping the bag mouth in the prescribed opened condition.
  • gas blow-in starts through the lower ends (or at the gas blow-in ports) of the guide portions 15c and 16c.
  • each of the guide portions 15c and 16c are set so that the guide portion 16c is positioned so as to be slightly shifted, from the bag width center position (line 71), to the right, while the guide portion 15c is positioned so as to be slightly shifted, from the bag width center position, to the left.
  • the guide portions 15c and 16c are positioned proximally and aligned in the bag width direction, when the distance between the grippers 2 is widened and the bag mouth is tensioned to the left and right and closed, the opening of the bag mouth becomes very small.
  • gas replacement is performed in this condition, the inflow of outside air into the bag and the outflow of gas inside the bag are limited, so that high gas replacement efficiency is assured.
  • the guide members 15 and 16 are linked to the both ends of the third parallel link mechanism 34; accordingly, when the guide portions 15c and 16c opened and closed inside the bag 1, the guide portions 15c and 16c are moved, as seen from Figure 8, with a revolving symmetry in mutually opposite directions along the circularly arc-shaped tracks (the arc-shaped tracks being indicated, respectively, by the lines 73 and 74) in a horizontal plane.
  • the guide members 15 and 16 (including the guide portions 15c and 16c) after their opening movements are shown by solid lines in Figure 8.
  • both circularly arc-shaped tracks 73 and 74 take the curvature shape that, when the guide portions 15c and 16c open, first approaches the center (line 71) in the bag width direction, and, after reaching substantially the center, moves away from the center (line 71). When the guide portions 15c and 16c close, they follow the paths that are the reverse thereof.
  • the positions of the guide portions 15c and 16c in the closed state are the same even for bags of different width sizes, but the distance in which the guide portions 15c and 16c are parted changes appropriately as necessary.
  • the distance between the opened guide portions 15c and 16c is set so that when the bag width size is small, the guide portions 15c and 16c stop after they are moved a short distance along the above-described circularly arc-shaped tracks and so that when the bag width size is large, then they stop after they are moved a long distance along the circularly arc-shaped tracks.
  • Figure 8 shows a situation that the distance of movement of the guide portions 15c and 16c when opened is comparatively large, and the guide portions 15c and 16c are at some distance from the center (line 71) in the bag width direction; and thus in Figure 8, distortion is developed in the opened shape of the bag mouth (asymmetrically relative to the line 72).
  • the bag width size is large, distortion will not be much of a problem for receiving the hopper 8.
  • the distance of movement of the guide portions 15c and 16c when they are opened is small.
  • the guide portions 15c and 16c are stopped in the vicinity of the center (line 71) of the bag width (or stopped at the halfway through the circularly arc-shaped tracks 73 and 74), and the shape of the opening in the bag mouth is nearly diamond-shaped, being the shape that is substantially symmetrical relative to the line 72.
  • bag-filling packaging machine can be modified in the following manner, for instance:
  • Figure 10 shows another type of bag-filling packaging machine according to the present invention.
  • the bag-filling packaging machine of Figure 10 compared to the bag-filling packaging machine shown in Figure 1, has no gas replacement nozzle 11 installed at position G. Instead, it has a gas replacement (blow-in) nozzle 75 provided at position E, and the action of the guide members 15 and 16 after the insertion of the gas replacement nozzle 75 into the bag 1 is slightly different; however, other respects, including the overall structure and action, is the same as those of Figure 1.
  • the gas replacement nozzle 75 descends toward the bag mouth opened by the guide portions 15c and 16c, and it enters deep inside the bag 1.
  • the gas replacement nozzle 75 is set to be positioned, as shown in Figure 11, on the line 72. This position is a position where, when the guide portions 15c and 16c are closed (shown by imaginary lines), the guide portions 15c and 16c and the gas replacement nozzle 75 are positioned proximally aligned in the bag width direction.
  • the gas replacement nozzle 75 After being inserted into the bag 1, the gas replacement nozzle 75 immediately effects gas blow-out, and, in conjunction therewith, the guide portions 15c and 16c are closed as shown by the imaginary lines, and the distance between the gripper pair 2 is widened, causing the bag mouth to be tensioned and pulled laterally to the left and right so as to closed. At this point, since the guide portions 15c and 16c and the gas replacement nozzle 75 are positioned proximally and aligned in the bag width direction, the opening of the bag mouth is very narrow. When gas replacement is performed in this condition, the inflow of outside air into the bag interior and the outflow of gas from the bag interior are limited, so that high level gas replacement efficiency is assured.
  • the guide portions 15c and 16c and gas replacement nozzle 75 are circular in shape, they can be a flat shape in the bag width direction, and this design bring a further improved gas replacement efficiency with the opening of the bag mouth being made further smaller.
  • Gas blow-out from the guide portions 15c and 16c is performed continuously until the bag is moved to position G.
  • the guide members 15 and 16 ascend to the wait position, the guide portions 15c and 16c are extracted from the bag 1, and gas blow-out stops.
  • the distance between the grippers 2 is further widened so that the bag mouth is tensioned to the left and right, thus closing the bag mouth of the bag 1.
  • both of the guide members 15 and 16 are connected to the gas supply source.
  • gas replacement efficiency can be improved and gas consumption can be reduced by implementing various connection modes and communicating/cutting-off action modes with a gas supply source and a vacuum source.
  • one of the guide members 15 and 16 can be connected to a vacuum source for removing the gas from inside the bag, or one or both of the guide members 15 and 16 can be connected in a switchable fashion to the gas supply source and the vacuum source, or both guide members 15 and 16 can be connected to the gas supply source in a gas blow-in pressure adjustable manner.
  • the openings at the tip ends of the guide portions 15c and 16c of the guide members 15 and 16 make gas passage openings so that gas passes through the openings so as to be blown into the bag and to be taken out of the bag.
  • the openings can be provided, in addition to and/or instead of the tip ends of the guide portions 15c and 16c, at other suitable places such as side walls of the guide portions 15c and 16c. What kind of connection mode or action mode is preferable can be deduced from experience, according to the various contents to be packaged and the bag size.
  • Figure 12 shows a connecting configuration in which two gas (nitrogen gas) supply sources 76 and 77 are connected through switchover valves 78 and 79 to the guide members 15 and 16, so that the switchover valves 78 and 79 are controlled by a controller 81.
  • the switchover valve 78 is activated and only the gas supply source 76 is made communicating; however, when strong blow-in is to be conducted, the switchover valve 79 is also activated causing both of the gas supply sources 76 and 77 to be communicating.
  • gas replacement efficiency is enhanced by conducting weak blow-in while the bag mouth of the bag 1 is open and conducting strong blow-in when the bag mouth is tensioned to the left and right and the bag mouth is closed.
  • the guide member 15 is connected through a switchover valve 83 to an inactive gas supply source 81, the other guide member 16 is connected through a switchover valve 84 to a vacuum source (vacuum pump) 82, and the switchover valves 83 and 84 are controlled by a controller 85.
  • the switchover valve 83 is activated and gas blow-in is conducted while the bag mouth of the bag 1 is open; and when the bag mouth is tensioned to the left and right and the bag mouth is closed, then the switchover valve 83 and the switchover valve 84 are alternately or simultaneously activated, so that gas blow-in and gas removal are conducted alternately or simultaneously.
  • an inactive gas supply source 86 and a vacuum source (vacuum pump) 87 wherein a gas composition analysis indicator is installed are connected to the guide members 15 and 16 so that switchover can be made by switchover valves 88 and 89 by a controller 91.
  • a controller 91 After blowing the inactive gas from the gas supply source 86 into the bag 1 thus effecting gas replacement for the inside of the bag 1, gas is sucked out from the interior of the bag by the vacuum source 87, and the composition of the gas inside the bag is analyzed by the gas composition analysis indicator.
  • the gas replacement rate can be tested for in-line; and, when a defective bag in which the gas replacement rate is poor is detected, control is effected by the controller 89 so that, in, for instance, the bag-filling packaging machine shown in Figure 10, the defective product is not discharged at position I but is discharged at position J.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Vacuum Packaging (AREA)
EP06020691A 2005-10-03 2006-10-02 Machine d'emballage pour remplir des sacs. Withdrawn EP1770018A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005290518 2005-10-03
JP2006010891A JP2007126208A (ja) 2005-10-03 2006-01-19 袋詰め包装機

Publications (1)

Publication Number Publication Date
EP1770018A1 true EP1770018A1 (fr) 2007-04-04

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ID=37622179

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Application Number Title Priority Date Filing Date
EP06020691A Withdrawn EP1770018A1 (fr) 2005-10-03 2006-10-02 Machine d'emballage pour remplir des sacs.

Country Status (3)

Country Link
US (1) US20070074492A1 (fr)
EP (1) EP1770018A1 (fr)
JP (1) JP2007126208A (fr)

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EP2351689A1 (fr) * 2008-11-01 2011-08-03 Bengbu Zhongzheng Industrial Co., Ltd. Dispositif de réception et de serrage pour sachet d emballage dans une machine de remplissage
CN102556373A (zh) * 2011-12-23 2012-07-11 浙江工业大学 转盘式包装机
CN102556431A (zh) * 2012-01-11 2012-07-11 苏州如德科技有限公司 中药配方颗粒剂调剂承袋盘
EP2594490A1 (fr) * 2011-11-15 2013-05-22 GREIF-VELOX Maschinenfabrik GmbH Dispositif de séparation de sacs et procédé de séparation de sacs
CN103496466A (zh) * 2013-08-28 2014-01-08 苏州国衡机电有限公司 一种自动取袋、装料、转送的包装机
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EP3127823A1 (fr) * 2015-08-07 2017-02-08 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Procede de remplissage et de fermeture de sachets en film et dispositif de fermeture et de remplissage associe
CN106829061A (zh) * 2017-01-11 2017-06-13 珠海格力智能装备技术研究院有限公司 开袋机构及具有其的装袋机
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EP2351689A4 (fr) * 2008-11-01 2012-08-01 Bengbu Zhongzheng Ind Co Ltd Dispositif de réception et de serrage pour sachet d emballage dans une machine de remplissage
EP2351689A1 (fr) * 2008-11-01 2011-08-03 Bengbu Zhongzheng Industrial Co., Ltd. Dispositif de réception et de serrage pour sachet d emballage dans une machine de remplissage
EP2594490A1 (fr) * 2011-11-15 2013-05-22 GREIF-VELOX Maschinenfabrik GmbH Dispositif de séparation de sacs et procédé de séparation de sacs
CN102556373B (zh) * 2011-12-23 2013-10-16 浙江工业大学 转盘式包装机
CN102556373A (zh) * 2011-12-23 2012-07-11 浙江工业大学 转盘式包装机
CN102556431A (zh) * 2012-01-11 2012-07-11 苏州如德科技有限公司 中药配方颗粒剂调剂承袋盘
CN102556431B (zh) * 2012-01-11 2013-08-14 苏州如德科技有限公司 中药配方颗粒剂调剂承袋盘
CN103496466A (zh) * 2013-08-28 2014-01-08 苏州国衡机电有限公司 一种自动取袋、装料、转送的包装机
CN103496466B (zh) * 2013-08-28 2015-09-09 苏州国衡机电有限公司 一种自动取袋、装料、转送的包装机
CN103895888A (zh) * 2014-03-25 2014-07-02 绍兴联德机械设备有限公司 纱布片大包装机
CN103895888B (zh) * 2014-03-25 2015-08-19 绍兴联德机械设备有限公司 纱布片大包装机
EP3127823A1 (fr) * 2015-08-07 2017-02-08 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Procede de remplissage et de fermeture de sachets en film et dispositif de fermeture et de remplissage associe
WO2017025463A1 (fr) * 2015-08-07 2017-02-16 Indag Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Procédé de remplissage et de scellement de sachets en feuille et dispositif de remplissage et de scellement associé
CN108137180A (zh) * 2015-08-07 2018-06-08 英达格工业设备股份有限公司 用于灌装和熔接膜袋的方法及其所用的灌装和熔接装置
NL2016383B1 (en) * 2016-03-08 2017-09-27 Audion Elektro Bv Apparatus and method for packaging articles in flexible bags.
CN106829061A (zh) * 2017-01-11 2017-06-13 珠海格力智能装备技术研究院有限公司 开袋机构及具有其的装袋机
CN108750206A (zh) * 2018-08-10 2018-11-06 温州科迪机械有限公司 包装机机械手
IT201900005108A1 (it) * 2019-04-04 2020-10-04 Fava S N C Di Adele Turetta & C Macchina e sistema automatizzati per il confezionamento di prodotti alimentari
CN110202838B (zh) * 2019-04-16 2021-04-30 杭州彼特环保包装有限公司 一种打孔设备及其打孔方法
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CN112193520A (zh) * 2020-09-11 2021-01-08 福建宏绿食品有限公司 一种菜包包装的流水线
CN112193520B (zh) * 2020-09-11 2022-04-05 福建宏绿食品有限公司 一种菜包包装的流水线
CN112623342A (zh) * 2020-12-25 2021-04-09 常德振邦米业有限公司 一种基于智能控制的稻米真空包装系统
EP4086181A1 (fr) * 2021-04-27 2022-11-09 Pacraft Co., Ltd. Machine de traitement de sac

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