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
  • B65B21/00—Packaging or unpacking of bottles
  • B65B21/24—Enclosing bottles in wrappers
  • B65B21/242—Enclosing bottles in wrappers in collapsed carton sleeves
• • 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
  • B65B43/16—Feeding individual bags or carton blanks from piles or magazines by grippers
  • B65B43/18—Feeding individual bags or carton blanks from piles or magazines by grippers by suction-operated grippers
  • B65B43/185—Feeding individual bags or carton blanks from piles or magazines by grippers by suction-operated grippers specially adapted for carton blanks
• • 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
  • B65B43/30—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers engaging opposed walls, e.g. suction-operated
  • B65B43/305—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers engaging opposed walls, e.g. suction-operated specially adapted for boxes, cartons or carton blanks

Definitions

• This invention relates to packaging of primary articles such as cans and bottles in multiple packaged cartons and is more particularly concerned with feeding such cartons from a hopper and then initiating and completing a loading operation of cartons in sequence and continuously.
• One common method used by known packaging machines typically comprises removing a collapsed carton from a supply of such cartons or blanks. The collapsed carton is then erected, and the cans, bottles or other articles to be packaged are placed into the erected carton. Alternatively, a supply of cartons in the form of flat blanks may be provided. After withdrawal of the carton from the supply, the carton may first be partially formed, and is then placed onto the articles. The carton is further formed into the completed package.
• a number of different forms of machinery are known for practising these basic methods.
• separated groups of articles comprising one or more article are formed and moved along a conveyor through the machine.
• Cartons are also moved along the machine, and each carton is positioned over one of the article groups. As the group and carton continue to move, the carton is lowered onto the group to load the articles into the carton.
• a known example of such a machine is shown in WO 96/32324.
• Machines of this type have several disadvantages. Many bottling plants package cans and bottles into a variety of carton sizes, for example, cartons which hold six, eight or twelve articles. ' Various packaging machines have been developed that may be adjusted to accommodate cartons of different sizes, but the machine must be shut down for a period of time (known as "downtime") while the adjustment is made. Minimising downtime is therefore desirable.
• the present invention seeks to overcome the commercial disadvantages of known packaging machines by providing a carton loading mechanism which is able to load more than one type or size of carton, and in which changeover between carton sizes or styles may be made rapidly. Further, the invention provides a loading mechanism that requires relatively little machine length to perform its loading function.
• the present invention can be used with a packaging machine described in parent application GB 9710639.7 and various other applications which depend therefrom for a priority date and, more particularly, the contemporaneous application denoted by Applicant's reference number D-7718. It is envisaged that the present invention can be used in various types of packaging machines. Alternatively, the carton loading mechanism of the present invention can be sold as an individual module to be fitted to new equipment or to existing equipment on a retro fit basis.
• One aspect of the invention provides a method of continuously feeding and conveying cartons to an article loading station in a packaging machine, which apparatus comprises selectively operable feed means in which first feed means is adapted sequentially to deliver cartons from a first supply and second feed means is adapted sequentially to deliver cartons from a second supply and locating means cooperating with said first and second feed means to maintain the cartons in a set location relative to conveyor means by which conveyor means said cartons are moved downstream to said loading station to be loaded by lowering each of said cartons onto at least one article to be packaged.
• said locating means may comprise a pair of blocks mounted to respective first and second endless chains, each block including a catch projecting from a bottom surface of said block and wherein said catches being adapted to engage opposed outer panels of the carton at the spaced locations intermediate ends and at spaced locations intermediate its transverse edges.
• said locating means may comprise a plurality of oppositely disposed pins projecting from respective ones of a pair of endless chains, said pins being adapted to engage opposed panels of the carton at spaced locations intermediate ends and at spaced locations intermediate the transverse edges.
• the conveyor means may comprise a pair of endless chain tracks for receiving first and second endless chains which tracks are adapted to guide corresponding pins in a downwardly inclined direction.
• said support lugs may be shaped to engage and/or maintain said carton in a horizontal plane.
• the regulating means may be provided to control the flow of articles at said infeed end, said regulating means further comprising means to control the pressure of said articles into the machine and means to determine the correct number of articles for each carton.
• said means to control the pressure of said articles comprises an infeed star wheel.
• Another aspect of the invention provides a method for continuously feeding and conveying cartons to an article loading station in a packaging machine which method comprises the steps: (i) causing cartons to be sequentially delivered from a first supply and/or a second supply onto a common conveyor means (ii) conveying said cartons down stream onto a loading station; and (iii) loading the cartons by lowering each of said cartons onto at least one article to be packaged.
• a third aspect of the invention provides a device for setting up carton blanks comprising opposed side and end walls and a pair of base panels, each connected to respective ones of side walls, which device comprises first and second endless chains being oppositely disposed, said chains each being provided with means to retain opposed portions of the base panels and separating means to separate one said base panel of the carton relative to the other base panel of the carton as it is moved downstream so as to separate said side walls and end walls to bring the carton into a set up condition.
• a fourth aspect of the invention provides a packaging machine for packaging articles into cartons selected from at least a first carton or a second carton, said first and second cartons being of a different type or size, said cartons being stored in at least one hopper, and picked for packing by a carton engaging means arranged to remove cartons successively one at a time from said at least one hopper and to transport them sequentially to a first determined position from where the cartons are transferred to a paper feed chain which supports the cartons to a second predetermined position from where the cartons are introduced to said articles.
• FIGURE la is a side view of a basket type carton supplied in a flat collapsed condition suitable for use with a machine according to the invention
• FIGURE lb is a perspective view of a basket type carton suitable for use with a machine according to the invention.
• FIGURE 2a is a perspective view of a wraparound carton blank suitable for use with a machine according to the invention
• FIGURE 2b is a perspective view of an erected and loaded carton of the type illustrated in Figure 2a;
• FIGURE 3 is a perspective view of a machine according to the invention illustrating those parts of the machine required for construction of basket type carriers;
• FIGURES 4, 5 and 6 are perspective views of the carton supply infeed and setup stations of the machine according to the invention adapted to load basket type cartons;
• FIGURE 7 is a simplified view of the carton conveyor used to transfer the carton from the set up station to the loading station;
• FIGURES 8, 9 and 10 illustrate an alternative embodiment of the carton conveyor and loading station of the machine adapted to load basket type cartons
• FIGURE 11 is a perspective view of the carton conveyor and loading station of the machine adapted to load basket type carriers;
• FIGURE 12 is a perspective view of the outfeed end of the machine containing basket type carriers
• FIGURE 13 is a perspective view of the machine shown in Figure 3 illustrating those parts required to set up and load wraparound cartons.
• FIGURE 14 is a perspective view of the outfeed end of the machine containing wraparound cartons.
• the machine according to the present invention is capable of loading both wraparound and basket type cartons.
• the carton 10 is a basket type carrier, shown in Figure lb, in a set up condition ready for lowering onto articles.
• the carton 10 includes opposed side wall panels 12, 14 and opposed end wall panels 16, 18 hingably connected one to the next.
• the carton 10 further includes a handle structure 20 which interconnects end wall panels 16, 18 and comprises transverse partition panels 22 interconnecting each side wall panel 12, 14.
• Base panels 24, 26 are hingably connected to each side wall panel 12, 14 respectively.
• carton 30 is a wraparound type carton, shown in Figure 2a in its blank form.
• the carton blank 30 includes first base panel 32, side wall 34, top panel 36, second side panel 38 and base panel 40 hingably connected one to the next.
• Top panel 36 comprises three pairs of apertures 42, 44 spaced between the side edges of top panel 36 and adapted to receive an upper portion of articles A, illustrated in Figure 2b.
• FIG. 3 there is shown a machine 50 for processing cartons 10 of the basket type outlined above.
• an apparatus for continuously feeding and conveying cartons to an article loading station in a packaging machine which apparatus comprises selectively operable feed means 46, 47 in which first feed means 46 (shown in Figure 3) is adapted sequentially to deliver cartons from a first supply 54 and second feed means 47 (shown in Figure 13) is adapted sequentially to deliver cartons from a second supply 140 and locating means 48 co-operating with said first and second feed means 46, 47 to maintain the cartons in a set location relative to conveyor means 102, 104 by which conveyor means said cartons are moved downstream to said loading station to be loaded by lowering each of said cartons onto at least one article to be packaged.
• the upstream end of the machine includes a hopper 54 in which a multiplicity of cartons 10 in flat collapsed condition are held ready for processing. As shown in Figures 4 and 5, the cartons are removed from the hopper 54 sequentially by a rotary vacuum feeder 56.
• the vacuum feeder 56 comprises four pairs of suction cups (not shown) each being interconnected to a drive shaft 58 by an elongated support rod 60.
• the rods 60 are slidably mounted respectively on a collar structure 63 which collar structure is rigidly secured to main rotatable shaft 65.
• the drive shafts 58 are preferably connected to a cam track by a cam follower housed in a housing 62 which provides a uniform path for the suction cups as each drive shaft 58 is rotated.
• the main drive shaft 65 is rotatable about a fixed axis X-X.
• the shaft 65 is generally supported at its end by a suitable bearing structure which is conventional and which is mounted to a side frame.
• Suitable driving mechanism for example a servo motor 57, is provided to rotate the shaft 65.
• a vacuum break is provided in the feeder mechanism 56 which is used in conjunction with a vacuum supply to set the vacuum connection and cut off points thereby determining when the carton is held by the feeder mechanism 56.
• the hopper 54 is a "gravity feed” type whereby the carton blanks 10 are held in the hopper at an incline to provide a positive feed. In order for the blank to be transferred from this inclined position to a vertical plane, it is necessary to off- set the axis of rotation X-X of the rotary feeder from the vertical plane, as illustrated in
• the feeder mechanism 56 continuously and sequentially feeds cartons from the hopper to the infeed by the main shaft 65 rotating the pick up means in the direction indicated by the arrow A, shown in Figure 4.
• the suction cups are moved in contact with side wall of carton 10.
• a vacuum is then applied to the set of suction cups by the vacuum supply.
• the carton 10 is withdrawn and then transferred to a belt 64.
• the vacuum is then maintained during this transfer stage so that the suction cups hold the side wall of the carton 10.
• the vacuum break disconnects the vacuum supply from the suction cups to release the carton.
• the blank is then placed between the nip end 66 of an infeed belt set shown generally at 64.
• the infeed belt set includes pairs of upper and lower receiving belts 70, 72 spaced apart so as to receive the handle portion 20 and base panels 24, 26 of a flat carton delivered by the rotary feeder 56.
• the belt sets 70, 72 maintain the position of the carton and move the carton downstream to a set up station shown generally at 74. It will be seen from Figures 4, 5 and 6 that as the rotary vacuum feeder rotates the cartons, they also undergo a translation about the path of the rotary movement from an inclined angle to a vertical plane.
• the set up station 74 includes a pair of opening wheel units (or panel separating means) 76, 78 which are used to separate opposing panels and to assist in part erecting the carton.
• the units 76, 78 are positioned either side of the carton of which the nearside unit 76 is adjustable relative to the far side unit 78 transversely to the machine to reflect the adjustments made to the type of carton.
• the wheel units are similar and hence only unit 76 is described with reference to Figures 4 and 6.
• the apparatus used to separate opposing panels is described in more detail in parent application GB 9710639.7 and various other patent applications which depend therefrom for a priority date, and more particularly in the contemporaneous application denoted by Applicant's reference number D-7718-1.
• the nearside unit 76 comprises a vacuum suction cup connected via a drive rod to the opening wheel 80.
• the opening wheel 80 is mounted onto a drive shaft 82 which is powered by a servo motor 84.
• the servo motor 84 is controlled by suitable control means, which can cause the rotational velocity of the opening wheel 80 to be varied and therefore, the suction cup.
• the drive rod is preferably connected to a cam track by a cam follower (not shown) contained in a housing 83 or to other suitable means to provide a uniform path for the suction cups when the drive shaft 82 is rotated.
• a cam follower not shown
• the suction cups and drive rod are moved under a guided linear motion towards and away from the carton during one complete rotation of the drive shaft.
• a vacuum break is provided in the housing 83 which is used in conjunction with a vacuum supply to set the vacuum connection and cut off points thereby determining when the carton is held by the panel separating means 76.
• the far side unit 78 shown in Figure 6 corresponds to the near side unit 76 and comprises a vacuum suction cup connected via a drive rod to the opening wheel 86.
• the opening wheel 86 is mounted onto a drive shaft 88 powered by a servo motor 90.
• the servo motor 90 is adapted to vary the rotational velocity of the opening wheel 86 and therefore, the suction cup.
• the lower belt set terminates short of opening units 76, 78 and the carton is moved downstream by the upper belt unit only as shown in Figures 4 and 5.
• the suction cup of the far side opening wheel 86 is rotated and caused to engage the corresponding side panel 14 of the carton.
• the far side opening wheel 86 is accelerated by the control means relative to the moving blank so that the suction cup is accelerated relative to the moving blank.
• the suction cup is also caused to move away from the carton by the cam effect of the opening wheel 86 so that side panel 14 and leading end panel 18 are separated and moved apart from the handle structure 20.
• the suction cup of the nearside opening wheel 80 is rotated and caused to engage the opposing side panel 12 of the carton blank. Vacuum is applied to the suction cup mounted on the nearside opening wheel 80 and the electronic cam effect causes the suction cup to move away from the handle structure 20 thereby separating leading side panel 12 and trailing end panel 16 from the handle structure 20.
• the side panels 12, 14 are moved apart so that carton 10 is progressively brought into a set up condition (shown in Figure lb).
• the nearside opening wheel 80 is caused to decelerate so that the suction cup slows relative to the velocity of the carton as it moves through the set up station.
• the end panels 16, 18 are maintained in a perpendicular relationship to the side panels 12, 14 by blocking lugs 92 mounted on a pair of side lug chain sets 94, 96.
• the base panels 24, 26 are then outwardly folded into a substantially perpendicular relationship with their respective side panels 12, 14 by guides positioned either on side of the carton 10.
• Each side lug chain 102, 104 set is of similar construction and includes endless chains 106 having a plurality of guide pin sets 108 which engage the opposed base panels 24, 26 of the carton in order to continue the downstream movement of the carton and to retain the base panels 24, 26, side panels 12, 14 and end panels 16, 18 in the set up condition illustrated in Figure lb.
• the set of three guide pins 110 are inserted into respective ones of apertures formed from each base panel 24, 26.
• the endless chain sets 102, 104 are mounted on tables 112, 114 to provide additional support to the base panels 24, 26 and are downwardly inclined towards the loading station 100.
• FIG. 8 An alternative embodiment of the carton conveyor is illustrated in Figures 8, 9 and 10.
• the carton blanks 200 are transferred to the upper and lower belt sets 210, 212 in a flat collapsed condition, shown in Figure 8.
• the base panels 24, 26 are outwardly folded into a substantially perpendicular relationship with their respective side panels 12, 14 by guides 214 positioned on either side of the carton 200.
• As the cartons move downstream they leave engagement with the upper and lower belt sets and engagement is gradually transferred as the cartons move downstream to a pair of side lug chain sets 216, 218 shown in Figure 8.
• Each side lug chain 216, 218 set is of similar construction and includes endless chains 220 having a plurality of guide pin sets 222 which engage the opposed base panels 24, 26 of the carton in order to continue the downstream movement of the carton.
• the endless chain sets 216, 218 are downwardly inclined towards the loading station 100.
• each set of guide pins 222 comprises three pins 224 mounted to a wedge shaped block or blocks 226.
• the blocks are adapted to maintain the carton in a horizontal plane.
• the pins are inserted into respective ones of apertures formed from each base panel 24, 26.
• Each guide pin set 222 is moved forward by the chain 220 mounted in a track 230.
• the track 230 is set up so that the guide pin set moves outwardly from the feed path of the carton blank 200, as shown in Figure 10, during forward movement.
• the base panels are moved apart to set up the carton so that it is ready to receive articles to be packaged.
• side panels 16, 18 are also separated by suction cups 232 mounted on a cam 234 and cam track 236, shown in Figure 11, but it is envisaged that the carton can be set up without this module, if preferred. The set up cartons are then lowered to the loading station hereinafter described.
• Articles such as bottles are fed into the machine by an infeed conveyor (not shown) and the line pressure of the bottles is controlled by an infeed star wheel (not shown), as is well known.
• the articles are separated into groups of the correct number per blank by means of a series of spaced metering bars (not shown) which also control the flow of the articles so that they can be introduced to the carton at the same rate as the carton blank flow.
• the cartons are introduced to the group of articles A from above as the carton and article group are moved forward in unison.
• the carton is lowered onto the articles due to the downward incline of the endless chains sets 102, 104.
• lateral movement of the carton 10 in the loading station 100 is controlled by a pair of guides 116, 118 positioned above each chain set 102, 104 and adapted to receive the free edges of each base panel 24, 26.
• Vertical movement of the carton is minimised by a pressure belt 119 shown in Figures 9 and 11 positioned above the endless chain sets and adapted to apply downward pressure to the handle structure. It is envisaged that in some embodiments, the pressure belt could be replaced by fixed guides or, where appropriate, vertically mounted endless chain and lug sets.
• the base panels 24, 26 are folded around to the underside of the carton and are interconnected by a locking mechanism 124 known in the art.
• folding mechanism 126 is provided prior to constructing the base, as is known in the art.
• a second pressure belt 128 is provided above the handle structure to prevent unwanted upward movement of the carrier. The completed carton is transferred to the outfeed end of the machine.
• the machine 10 must first be adjusted to receive cartons of this type.
• the pair of downwardly inclined chain sets 102, 104 and tables 112, 114 are mounted on platforms which can be adjusted in both vertical and horizontal planes by computer controlled servo motors 130.
• the first and second pressure belts 119, 128 are also mounted on units 132, 134 which are adjustable in a vertical plane by computer controlled servo motors 136, 138.
• the downwardly inclined chain sets are moved apart to increase the width between the chain sets 102, 104 and a second hopper 140 and rotary vacuum feeder 142 brought into position of use, by suitable control means.
• the hopper 142 holds a multiplicity of carton blanks 30 illustrated in Figure 2 which are held ready for processing.
• the blanks 30 are then removed sequentially by the rotary vacuum feeder 142.
• the vacuum feeder 142 is mounted horizontally and is similar in construction to the feeder outlined above. A blank is removed from the hopper 140 and is fed one at a time to the paper feed chain sets 102, 104 so that the base panels 32 and 40 and side panels 34, 38 are supported.
• the carton is transferred to the set up station by the endless chains 102, 104 and guide pins 110.
• the chain is downwardly inclined so that the carton can be introduced to a group of articles from above during forward movement as illustrated in Figure 13. It is often the case that the angle of incline will differ for different carton types and therefore the chain sets 102, 104 and tables 112, 114 can be adjusted vertically to alter the angle of incline by suitable control means.
• the articles are introduced to the loading station 100 by the article conveyor in the same way as described above.
• first pressure belt 119 which is positioned in a central region to lower the top panel and enable the neck portions of the articles to pass through the apertures.
• the side panels are folded into a perpendicular relationship with top panel by fixed guides (not shown) and the partly erected carton is transferred to the second set of endless chains 120, 122 ( Figure 14) which transfers the carton to the outfeed end of the machine.
• the second pressure belt 128 is raised to a position of non-use and where appropriate, the second set of endless chains are moved apart or brought closer together by means of horizontal adjustment which are controlled and powered by servo motors (not shown).
• the bottom is constructed and, where appropriate, an article retaining means is formed by the same method as described above.
• the carton is secured to complete the packaging operation.
• the control means may be a dedicated processor or may be a control means for a packaging machine with which the apparatus of the invention is used. Alternatively, the control means may preferably be a known programmable servo control system.
• the adjustments to the machine required to change from packaging one carton type to another carton type can be preset, thus reducing the amount of down time when interchanging carton types or styles.
• the speed of operation of the apparatus is improved as well as its efficiency and durability.
• An advantage of the present invention is the flexibility offered by the system.
• the invention may b used with machines for packaging cans, paperboard "bricks” and other containers into cartons.
• the carton erecting mechanism of the invention has been illustrated with reference to a specific embodiment and that numerous modifications are possible within the scope of the invention.
• the carton erecting mechanism is able to process cartons comprising numerous configurations of groups of articles covering a range of carton size and shape, for example, four, six, eight and twelve bottles without undue time being spent in adjusting the mechanism.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Supplying Of Containers To The Packaging Station (AREA)
• Sheets, Magazines, And Separation Thereof (AREA)
• Telephone Set Structure (AREA)
• Drying Of Solid Materials (AREA)
• Making Paper Articles (AREA)
• Container Filling Or Packaging Operations (AREA)

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Citations (6)

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  • 1997-05-23 GB GBGB9710639.7A patent/GB9710639D0/en not_active Ceased
• 1998
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  • 1998-05-22 EP EP98923699A patent/EP1066198B1/de not_active Expired - Lifetime
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