EP3439972B1 - Device for one-sided closure of package sleeves for the production of composite packages - Google Patents

Device for one-sided closure of package sleeves for the production of composite packages Download PDF

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Publication number
EP3439972B1
EP3439972B1 EP17712073.0A EP17712073A EP3439972B1 EP 3439972 B1 EP3439972 B1 EP 3439972B1 EP 17712073 A EP17712073 A EP 17712073A EP 3439972 B1 EP3439972 B1 EP 3439972B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
tappet
head
corner segments
wheel
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.)
Active
Application number
EP17712073.0A
Other languages
German (de)
French (fr)
Other versions
EP3439972A1 (en
Inventor
Thomas Vetten
Jürgen RICHTER
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.)
SIG Combibloc Services AG
Original Assignee
SIG Technology AG
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 SIG Technology AG filed Critical SIG Technology AG
Priority to PL17712073T priority Critical patent/PL3439972T3/en
Publication of EP3439972A1 publication Critical patent/EP3439972A1/en
Application granted granted Critical
Publication of EP3439972B1 publication Critical patent/EP3439972B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B65B3/025—Making parallelepipedal containers from a single carton blank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
    • B31B50/30—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms the mandrels moving
    • B31B50/32—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms the mandrels moving in circular paths
    • B31B50/322—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms the mandrels moving in circular paths the mandrels extending radially from the periphery of a drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/76—Opening and distending flattened articles
    • B31B50/78—Mechanically
    • B31B50/782—Mechanically by pushing the opposite ends of collapsed blanks towards each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/76—Opening and distending flattened articles
    • B31B50/78—Mechanically
    • B31B50/788—Mechanically by introducing the blanks into undeformable holders, e.g. on a drum or on chains
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/02—Feeding sheets or wrapper blanks
    • B65B41/04—Feeding sheets or wrapper blanks by grippers
    • B65B41/06—Feeding sheets or wrapper blanks by grippers by suction-operated grippers
    • 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
    • B65B43/145—Feeding 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
    • 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
    • B65B43/32—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by external pressure diagonally applied
    • B65B43/325—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by external pressure diagonally applied to boxes, cartons or 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
    • B65B43/42—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
    • B65B43/50—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 rotary tables or turrets
    • 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
    • B65B43/54—Means for supporting containers or receptacles during the filling operation
    • 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
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
    • B65B55/10—Sterilising wrappers or receptacles prior to, or during, packaging by liquids or gases
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B31B2100/0022—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed made from tubular webs or blanks, including by tube or bottom forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations

Definitions

  • the invention relates to a device for unilaterally closing packing sleeves for the production of composite packs, in particular cardboard / plastic composite packs, by bottom shaping by means of a mandrel wheel with a plurality of mandrels which are arranged uniformly distributed over the circumference and are directed radially outwards and which successively have several processing stations in Pass through the circumferential direction of the mandrel wheel, with each mandrel having a head at its free end, onto which the foldable sections of the packing sleeve to be closed are folded and sealed in the closed position, the head of the mandrel being variable in its outer dimensions.
  • a device is out WO 96/16789 known.
  • Fig. 9 is a device known from the prior art for filling packages C open at the top, in particular with flowable foods, for forming packages P, that is to say a so-called filling machine, comprising a magazine 1 for the provision of packaging sleeves S and a device for forming open-topped packaging C from the packaging sleeves S, which are closed on one side and thus can accommodate, for example, a flowable food through the remaining opening.
  • the known filling and sealing device has a number of parallel processing lines, of which in the Fig. 9 only a single processing line 2 is shown. Each processing line 2 is assigned a magazine 1 with a stack 3 or a bundle of packaging sleeves S folded flat by two folding lines.
  • the packaging sleeves S have been formed from blanks of a packaging material, the longitudinal edges of which are sealed to one another.
  • the packaging sleeves S are unfolded by a feed device 4.
  • the packaging sleeves S are unfolded by pulling a later side surface of the corresponding packaging sleeve S away from the stack 3 without further action around the pre-folded folding lines which form the edges of the packaging sleeve S and the subsequent pack P.
  • an application device could also be provided for applying spouts (not shown) to the packing sleeves S.
  • a known device 5 for forming and unilaterally closing the packing sleeves S has a mandrel wheel 6 which comprises six mandrels 7 and which rotates cyclically, that is to say stepwise, counterclockwise.
  • a packing jacket S is pushed onto the mandrel 7.
  • the mandrel wheel 6 is rotated further into the next mandrel wheel position II, in which the longitudinal end of the packing jacket S protruding from the mandrel 7 is heated with hot air via a heating unit 8.
  • next mandrel wheel position III the heated longitudinal end of the packing jacket S is pre-folded by a press 9 and in the subsequent mandrel wheel position IV in the folded position is sealed by a sealing device 10, in particular to form a bottom B.
  • a packing body C which is closed on one side, that is to say a packaging which is open at the top, is obtained, which in the subsequent mandrel wheel position V is removed from the mandrel 7 and attached to a cell 11 of an endless cell chain 12 which is guided in a circle possible conveyor is handed over.
  • No mandrel 7 is assigned to the mandrel 7 in the next mandrel wheel position VI.
  • the number of mandrel wheel positions or mandrels 7 and the processing steps provided there can, if necessary, be as shown in FIG Fig. 9 and the associated description.
  • a spout can be connected to the packaging material in at least one additional mandrel wheel position as required.
  • the longitudinal end of the packing jacket closed on the mandrel wheel is preferably the head of the later packing. In the present case, whether the packing body is filled by the future head or by the future floor plays only a subordinate role.
  • the packing body C taken by the mandrel wheel 6 is transported with the open longitudinal end pointing upwards in a cell 11, in particular a cell chain, by a filling machine 13.
  • the package body C thereby arrives in an aseptic chamber 14 which comprises a sterilization zone 15 and a filling and sealing zone 16, through which the package bodies C are transported from left to right in the transport direction symbolized by the arrows.
  • the packing bodies C do not have to be transported in a straight line, but can also be carried out in at least one arc or even circle lying in a horizontal plane.
  • the packing bodies C are preheated in succession by a preheating device 18 by blowing with hot sterile air.
  • the package bodies C are then sterilized by means of a sterilization device 19, preferably using H 2 O 2 (hydrogen peroxide), whereupon the package bodies C are dried by exposure to sterile air via a drying device 20 and after the transition from the sterilization zone 15 to the filling and sealing zone 16 are brought into a filling position 21 below a filling outlet 22.
  • the packing bodies C are successively filled with a product 23, in particular with a flowable food.
  • the filled packing bodies C are then with a closing device 24 closed by folding the upper region of the package body C and sealing.
  • the filled and sealed packs P are then removed from the cells 11 of the transport device 12.
  • the now empty cells 11 are moved further with the transport device 12 in the direction of the mandrel wheel 6 in order to take up further packing bodies C there.
  • the packs to be produced are those with a square or rectangular cross section, that is to say cuboid packs
  • the use of a mandrel wheel in a filling machine is unproblematic since the square or rectangular cross section of the mandrel is matched to the inner clear cross section of the pack casing to be pushed open. It becomes problematic when the package shape deviates from the conventional cuboid shape and has, for example, rounded or round edges or surfaces whose curvature gradually decreases towards the floor (or gable) and again in a square and / or rectangular bottom (or gable) ) ends.
  • the invention is based on the object of designing and developing the aforementioned device for closing packing sleeves in such a way that reliable and, in particular, pocket-free sealing of the end region of a packing sleeve on the mandrel is reliably guaranteed.
  • the head of the mandrel is "folded in” when pushed on and is only brought into the form required for sealing after being pushed on.
  • at least two corner segments of the head can be changed in their position. To do this, they can be swiveled from the corners into the interior of the mandrel.
  • the mandrel also has at least one axially movable plunger in its interior.
  • the plunger is preferably connected to a segment of the head which is designed as a lifting segment and which can be moved into the interior of the mandrel by the movement of the plunger.
  • the corner segments of the head to be displaced are also designed as swivel segments which can be moved from a sealing position into a retracted position.
  • the pivoting segments are preferably designed to be spring-loaded in such a way that they pivot back into their sealed position after the positively actuated pivoting into their retracted position.
  • the design of the corner segments as pivot segments is particularly advantageous because they can be equipped with stable pivot axes in order to be able to absorb the pressure during the pressing process during the sealing process.
  • the mandrel has two adjacent corner segments and an intermediate lifting segment.
  • An alternative embodiment provides that the mandrel has four corner segments and two each has lifting segments lying between two adjacent corner segments.
  • the optimal design of the 'expanding mandrel' according to the invention will generally depend on the actual geometry of the packs to be produced. If it is sufficient to design only two corner segments of the head of a mandrel to be pivotable, this solution will be chosen due to the lower design effort, otherwise it is also possible according to the invention to design all four corners of the head of the mandrel with adjustable corner segments.
  • the force transmission from the tappet to the corner segments takes place by means of a cam mechanism.
  • the force it is also possible for the force to be transmitted from the tappet to the corner segments by means of a toggle lever, in which case each corner segment to be pivoted has its own toggle lever.
  • the invention provides in a further embodiment that the tappet can be moved on the mandrel wheel side by means of a link guide arranged stationary on the outer circumference of the mandrel wheel.
  • the link guide is preferably formed on or in a guide sleeve which is arranged in a rotationally fixed manner on the mandrel wheel or the drive shaft of the mandrel wheel.
  • a guide element with a cam mechanism for transmitting the control movement running parallel to the mandrel gear shaft is provided on the tappet which is movable radially to the mandrel gear shaft.
  • the guide element preferably has a guide track on the side facing the tappet and the tappet has a roller on its end on the mandrel wheel side for rolling on the guide track of the guide element.
  • the ram is adjustable in length. This is of particular advantage for the fine adjustment and can also be done with installed mandrels, for example for maintenance or repair purposes, without dismantling the mandrel.
  • mandrel is at least partially hollow. In this way, all the drive parts required for the adjustment of the head segments and their storage can be easily reached even with the mandrel already attached to the mandrel wheel shaft.
  • the open areas of the mandrel are provided with at least one cover. In this way, the mechanical design of the tappet drive can be well protected against contamination and penetration of foreign bodies.
  • the mandrel has at least one spring element acting on its longitudinal side, which fixes the pushed-on packing jacket in its position.
  • the mandrel has lines for cooling water in its solid interior.
  • This is particularly expedient, since in this way the head region of the mandrel can be actively cooled in order to be able to reduce the tacking times of the mandrel wheel in the best possible way.
  • a water-cooled version that is Dornradwelle hollow and the cooling water is passed through appropriate lines inside the mandrel gear shaft in a known manner through the individual mandrels.
  • a further embodiment of the invention provides that the mandrel has one or more end stops for mechanically limiting the opening path for the packing jacket.
  • Fig. 1 shows a mandrel 7 according to the invention with an upwardly directed head 25, the mandrel 7 being fastened to a mandrel wheel shaft 26.
  • head 25 In the area of the head 25, one can see clearly pivotable corner segments 27, which are not in their extended sealing position, but rather in their retracted pivoting position, in order to make it easier for a packing jacket (not shown) to be pushed onto the mandrel 7 from above.
  • Two pivot elements having the corner segments 27 are movably mounted on the housing of the mandrel 7 with appropriately stable pivot axes 28.
  • a plunger 29 is used to actuate the pivoting elements.
  • the plunger 29 is designed in two parts in the illustrated and preferred embodiment and includes a lower plunger 29A and an upper plunger 29B.
  • the plungers 29A and 29B are axially displaceably supported by means of bearing blocks 30.
  • a ball bearing 31 At the lower end of the lower plunger 29A there is a ball bearing 31, the roller of which can be rolled on a guide track 32 of a guide element 33.
  • the guide element 33 is designed to be longitudinally displaceable in the direction of the double arrow shown via a corresponding guide parallel to the mandrel gear shaft 26 and is controlled via a link guide.
  • the guide element 33 on its in the Fig. 1 shown left end on acting as a sliding block ball bearing 34 which is guided in a guide groove 35 of a fixed guide sleeve 36.
  • the guide groove 35 is designed such that a pivoting of the mandrel gear shaft 26 by 180 ° moves the guide element 33 away from it shown position, in which the pivot elements 27 are "folded", can be brought into a sealing position in which the pivot elements 27 are folded out.
  • the guide sleeve 36 is stationary, ie it does not rotate when the mandrel gear shaft 26 rotates.
  • the mandrel wheel shaft 26 is driven by a drive shaft 37 and can - depending on the number of processing lines in the filling machine - correspondingly contain additional mandrels 7.
  • Lower plunger 29A and upper plunger 29B are connected by means of a connecting element 38 and ensure that when the plunger 29A, 29B is actuated upwards, a lifting segment 39 moves axially upwards in order to close the gap between the two pivotable corner segments 27 on the head surface shut down.
  • the upper plunger 29B is mounted in the area between the pivot elements having the corner segments 27 by means of a bearing 40 designed as a guide sleeve.
  • the pivoting movement of the pivoting elements having the corner segments 27 takes place by means of a guide element 41 which has curved tracks 42 running towards the two pivoting elements.
  • the swivel elements themselves have rotatable ball bearings 43 in this area, which roll on the cam tracks 42 of the guide element 41.
  • the two corner segments 27 are operatively connected to one another by means of a compression spring arranged between them in such a way that the two corner segments 27 can only be moved from their sealing position into the folded position against the pressure of the spring.
  • the compression spring is in the unspecified groove that in Fig. 3 can be seen on the left next to the lifting segment 39 in the head 25 of the mandrel 7.
  • Additional compression springs 44 ensure that the plunger 29A, 29B is always in contact with the guide track 32 of the guide element 33 by means of its ball bearing 31.
  • the upper plunger 29B is longitudinal in the region of its connecting element 38 with the lower plunger 29A by means of an adjusting nut 45 for adjusting the overall length adjustable. In this way, fine adjustment of the top dead center of the lifting segment 39 can be carried out reliably and simply, even when the mandrel 7 has been set up.
  • the adjustment of the upper plunger 29B by means of the nut 45 can also be seen in particular in the rotated side view in FIG Fig. 2 in which the lower plunger 29B is not visible.
  • the exact structure results from Fig. 3 , in which the upper part of the mandrel 7 along the line III-III in Fig. 1 is shown cut.
  • the Fig. 2 and 3rd it can also be seen that the mandrel 7 is screwed onto the mandrel wheel shaft 26 by means of screws 46.
  • the longitudinal displaceability of the guide element 33 can also be clearly seen there by means of a guide rail 33 '.
  • the Fig. 4 and 5 correspond to the representations of Fig. 1 and 3rd , but here the mandrel 7 is shown in its sealing position.
  • the mandrel points to the Fig. 4 and 5 likewise upwards, even if, as already explained, the sealing position is diametrically opposite the retracted position of the pivoting elements, that is to say with the mandrel 7 pointing downward, in the exemplary embodiment shown and in this respect preferred.
  • the actual stationary guide sleeve 36 is in Fig. 4 shown rotated by 180 °. It can first be seen that the guide element 33 is in its end position by means of the link guide 34, 35, so that the lower plunger 29A is shown in its uppermost position.
  • the upper plunger 29B is in its uppermost position and thus also the guide element 41, so that the ball bearings 43 are moved towards one another along the guide track 42 of the guide element 41 and in this way a pivoting of the corner segments 27 of the pivoting elements into their outer Seal position.
  • the lifting segment 39 is finally also in its highest position in the sealing position.
  • FIG Fig. 7 This sealing position and formation of the head 25 of the mandrel 7 is shown in FIG Fig. 7 shown in perspective. It can be clearly seen that the entire end face of the head 25 is now closed and that the two Corner segments 27 are now in their - unfolded - sealing position and the cavity located between them is filled by the lifting segment 39.
  • the cavities on the end face serve, in a known manner, to absorb the material accumulation which forms when the free outer surfaces of the pushed-on packing jacket are folded in, in particular in the area of the folded transverse seam, so that a flat surface is produced when the packing base is sealed, for example. which serves as a stand for the later pack.
  • pivot elements having the corner segments are equipped with relatively strong pivot axes 28 in order to be able to withstand the pressure during the pressing.
  • the exemplary embodiment described so far is a mandrel 7 which has only two pivotable corner segments 27.
  • a corresponding version is in Fig. 7 shown.
  • four corner segments 27' are arranged as pivotable segments on corresponding pivot elements, a lifting segment 39 'being located between two corner segments 27'.
  • the drive for pivoting the corner segments 27 'can be designed as in FIG Fig. 6 , in Fig. 7 it is shown, however, that the force of the tappet 29 'can alternatively be transmitted to the corner segments 27' by means of a toggle lever 47A or 47B, each toggle lever being supported by means of two axes 48 on the one hand in the swivel element and on the other hand in the lifting segment 39 '.
  • the pivot elements are pivotally mounted on corresponding pivot axes 38 'on the mandrel 7'.
  • Fig. 8 it is shown that spring elements 49 can be arranged on the side of the mandrel, which reliably prevent a packaging jacket (not shown) from slipping onto the mandrel 7 once it has been pushed on. Is too Fig. 8 It can be seen that the "open" part of the mandrel 7 is closed by means of a cover 50, the surface of which corresponds to the actual package design and, in the exemplary embodiment shown, has a round side wall, and thus protects the internal mechanics of the mandrel 7.
  • the mandrel 7 can have lines 51, 52 for the passage of cooling water.
  • the mandrel gear shaft 26 is hollow in such a case.
  • a known distribution element for the cooling water is then arranged in the interior of this cavity, which is of rigid design and ensures, via corresponding circumferential grooves, that pressurized cooling water is pressed through line 51 into the interior of the mandrel and out of the drain line 52 again the distribution element is guided.
  • the two lines 51 and 52 are connected to one another in the upper region of the mandrel 7 and / or in the head 25 by means of a connecting groove 53.
  • the distribution element is rigidly arranged inside the rotating mandrel wheel shaft and, via appropriate inlet and outlet lines, ensures that the mandrels 7 can be tempered at the desired stations or over certain distances when turning.
  • cooling after the sealing process can be carried out "automatically” to a certain extent due to the application of cooling water due to the rotation of the mandrel wheel shaft 26.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Cartons (AREA)
  • Closing Of Containers (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Package Closures (AREA)
  • Packages (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum einseitigen Verschließen von Packungsmänteln für die Herstellung von Verbundpackungen, insbesondere Karton/Kunststoff-Verbundpackungen, durch Bodenformung mittels einem Dornrad mit einer Mehrzahl von gleichmäßig über den Umfang verteilt angeordneter und radial nach außen gerichteter Dorne, welche nacheinander mehrere Bearbeitungsstationen in Umfangsrichtung des Dornrades durchlaufen, wobei jeder Dorn an seinem freien Ende einen Kopf aufweist, auf den die zu schließenden Faltabschnitte des auf den Dorn aufgeschobenen Packungsmantels gefaltet und in geschlossener Stellung versiegelt werden, wobei der Kopf des Dorns in seinen äußeren Abmessungen veränderbar ausgeführt ist. Eine solche Vorrichtung ist aus WO 96/16789 bekannt.The invention relates to a device for unilaterally closing packing sleeves for the production of composite packs, in particular cardboard / plastic composite packs, by bottom shaping by means of a mandrel wheel with a plurality of mandrels which are arranged uniformly distributed over the circumference and are directed radially outwards and which successively have several processing stations in Pass through the circumferential direction of the mandrel wheel, with each mandrel having a head at its free end, onto which the foldable sections of the packing sleeve to be closed are folded and sealed in the closed position, the head of the mandrel being variable in its outer dimensions. Such a device is out WO 96/16789 known.

Vorrichtungen der zuvor genannten Art sind seit langem in unterschiedlichsten Ausführungen bekannt und dienen meist zum Verschließen des Bodens von herzustellenden Getränkepackungen. Dabei werden die zu schließenden Faltabschnitte eines Packungsmantels beim Siegelvorgang fest auf den darunter befindlichen Dorn gepresst, um einen ebenen Boden für eine gute Standfestigkeit der späteren Packung herstellen zu können (siehe zum Beispiel EP 0 417 864 ). Es ist jedoch auch möglich, auf dem Dorn zunächst die Kopffaltung vorzunehmen, dies ist häufig der Fall, wenn die spätere Getränkepackung auch ein wiederverschließbares Ausgießelement enthalten soll, das nicht von außen, sondern von innen durch eine entsprechende Öffnung im Verbundmaterial hindurch gesteckt und dort versiegelt wird. Dazu bietet sich das Applizieren entsprechender Ausgießelemente auf einem Dorn an.Devices of the aforementioned type have long been known in various designs and are mostly used to close the bottom of beverage packs to be produced. The folding sections of a packing jacket to be closed are pressed firmly onto the mandrel underneath during the sealing process in order to be able to produce a flat bottom for a good stability of the later pack (see for example EP 0 417 864 ). However, it is also possible to first fold the head on the mandrel, this is often the case if the later beverage pack is also to contain a reclosable pouring element which is not inserted from the outside but from the inside through a corresponding opening in the composite material and seals there becomes. For this purpose, appropriate pouring elements can be applied to a mandrel.

In Fig. 9 ist eine aus dem Stand der Technik bekannte Vorrichtung zum Füllen von oben offenen Verpackungen C, insbesondere mit fließfähigen Lebensmitteln, zur Bildung von Packungen P, also eine sogenannte Füllmaschine, umfassend ein Magazin 1 zum Bereithalten von Packungsmänteln S und eine Vorrichtung zum Formen von oben offenen Verpackungen C aus den Packungsmänteln S, die einseitig verschlossen sind und somit durch die verbleibende Öffnung beispielsweise ein fließfähiges Lebensmittel aufnehmen können, dargestellt. Die bekannte Füll- und Siegelvorrichtung weist eine Reihe von parallelen Bearbeitungslinien auf, von denen in der Fig. 9 lediglich eine einzige Bearbeitungslinie 2 dargestellt ist. Jeder Bearbeitungslinie 2 ist ein Magazin 1 mit einem Stapel 3 bzw. ein Bündel von um zwei Faltlinien flachgefaltete Packungsmänteln S zugeordnet. Die Packungsmäntel S sind aus Zuschnitten eines Packstoffs gebildet worden, deren Längsränder aneinander gesiegelt sind. Die Packungsmäntel S werden von einer Zuführeinrichtung 4 aufgefaltet. Das Auffalten der Packungsmäntel S erfolgt dabei durch Wegziehen einer späteren Seitenfläche des entsprechenden Packungsmantels S vom Stapel 3 ohne weiteres Zutun um die vorgefalteten Faltlinien, die die Kanten des Packungsmantels S sowie der späteren Packung P bilden. Bedarfsweise könnte auch noch eine Applikationseinrichtung, zum Applizieren von nicht dargestellten Ausgießern an die Packungsmäntel S vorgesehen sein.In Fig. 9 is a device known from the prior art for filling packages C open at the top, in particular with flowable foods, for forming packages P, that is to say a so-called filling machine, comprising a magazine 1 for the provision of packaging sleeves S and a device for forming open-topped packaging C from the packaging sleeves S, which are closed on one side and thus can accommodate, for example, a flowable food through the remaining opening. The known filling and sealing device has a number of parallel processing lines, of which in the Fig. 9 only a single processing line 2 is shown. Each processing line 2 is assigned a magazine 1 with a stack 3 or a bundle of packaging sleeves S folded flat by two folding lines. The packaging sleeves S have been formed from blanks of a packaging material, the longitudinal edges of which are sealed to one another. The packaging sleeves S are unfolded by a feed device 4. The packaging sleeves S are unfolded by pulling a later side surface of the corresponding packaging sleeve S away from the stack 3 without further action around the pre-folded folding lines which form the edges of the packaging sleeve S and the subsequent pack P. If necessary, an application device could also be provided for applying spouts (not shown) to the packing sleeves S.

Eine bekannte Vorrichtung 5 zum Formen und einseitigem Verschließen der Packungsmäntel S weist ein Dornrad 6 auf, das sechs Dorne 7 umfasst und sich zyklisch, also schrittweise, gegen den Uhrzeigersinn dreht. In der ersten Dornradstellung I wird ein Packungsmantel S auf den Dorn 7 geschoben. Anschließend wird das Dornrad 6 in die nächste Dornradstellung II weitergedreht, in der das gegenüber dem Dorn 7 vorstehende Längsende des Packungsmantels S über eine Heizeinheit 8 mit Heißluft erwärmt wird. In der nächsten Dornradstellung III wird das erwärmte Längsende des Packungsmantels S durch eine Presse 9 vorgefaltet und in der nachfolgenden Dornradstellung IV in der gefalteten Position durch eine Siegeleinrichtung 10 dicht verschlossen, insbesondere zu einem Boden B, gesiegelt. Es wird auf diese Weise ein einseitig verschlossener Packungskörper C, also eine oben offene Verpackung, erhalten, die in der nachfolgenden Dornradstellung V vom Dorn 7 entnommen und an eine Zelle 11 einer im Kreis geführten endlosen Zellenkette 12 als mögliche Fördervorrichtung übergeben wird. In der nächsten Dornradstellung VI ist dem Dorn 7 kein Arbeitsschritt zugeordnet.A known device 5 for forming and unilaterally closing the packing sleeves S has a mandrel wheel 6 which comprises six mandrels 7 and which rotates cyclically, that is to say stepwise, counterclockwise. In the first mandrel wheel position I, a packing jacket S is pushed onto the mandrel 7. Subsequently, the mandrel wheel 6 is rotated further into the next mandrel wheel position II, in which the longitudinal end of the packing jacket S protruding from the mandrel 7 is heated with hot air via a heating unit 8. In the next mandrel wheel position III, the heated longitudinal end of the packing jacket S is pre-folded by a press 9 and in the subsequent mandrel wheel position IV in the folded position is sealed by a sealing device 10, in particular to form a bottom B. In this way, a packing body C which is closed on one side, that is to say a packaging which is open at the top, is obtained, which in the subsequent mandrel wheel position V is removed from the mandrel 7 and attached to a cell 11 of an endless cell chain 12 which is guided in a circle possible conveyor is handed over. No mandrel 7 is assigned to the mandrel 7 in the next mandrel wheel position VI.

Die Anzahl von Dornradstellungen bzw. Dornen 7 und die dort vorgesehenen Bearbeitungsschritte können bedarfsweise von der Darstellung gemäß Fig. 9 und der zugehörigen Beschreibung abweichen. Zudem kann noch in wenigstens einer bedarfsweise weiteren Dornradstellung ein Ausgießer mit dem Packstoff verbunden werden. Dann handelt es sich bei dem auf dem Dornrad verschlossenen Längsende des Packungsmantels vorzugsweise um den Kopf der späteren Packung. Ob der Packungskörper durch den späteren Kopf oder durch den späteren Boden gefüllt wird, spielt vorliegend nur eine untergeordnete Rolle.The number of mandrel wheel positions or mandrels 7 and the processing steps provided there can, if necessary, be as shown in FIG Fig. 9 and the associated description. In addition, a spout can be connected to the packaging material in at least one additional mandrel wheel position as required. Then the longitudinal end of the packing jacket closed on the mandrel wheel is preferably the head of the later packing. In the present case, whether the packing body is filled by the future head or by the future floor plays only a subordinate role.

Der vom Dornrad 6 genommene Packungskörper C wird mit dem offenen Längsende nach oben weisend in einer Zelle 11, insbesondere einer Zellenkette, durch eine Füllmaschine 13 transportiert. Dabei gelangt der Packungskörper C in eine Aseptikkammer 14, die eine Sterilisationszone 15 und eine Füll- und Siegelzone 16 umfasst, durch die die Packungskörper C in der durch die Pfeile symbolisierten Transportrichtung von links nach rechts transportiert werden. Der Transport der Packungskörper C muss nicht geradlinig erfolgen, sondern kann auch in wenigstens einem in einer waagerechten Ebene liegenden Bogen oder gar Kreis erfolgen.The packing body C taken by the mandrel wheel 6 is transported with the open longitudinal end pointing upwards in a cell 11, in particular a cell chain, by a filling machine 13. The package body C thereby arrives in an aseptic chamber 14 which comprises a sterilization zone 15 and a filling and sealing zone 16, through which the package bodies C are transported from left to right in the transport direction symbolized by the arrows. The packing bodies C do not have to be transported in a straight line, but can also be carried out in at least one arc or even circle lying in a horizontal plane.

Der Aseptikkammer 14 wird Sterilluft über entsprechende Sterilluftanschlüsse 17 zugeführt. Die Packungskörper C werden durch eine Vorwärmeinrichtung 18 nacheinander durch Anblasen mit heißer Sterilluft vorgewärmt. Anschließend werden die Packungskörper C mittels einer Sterilisiereinrichtung 19, vorzugsweise mittels H2O2 (Wasserstoffperoxid), sterilisiert, woraufhin die Packungskörper C durch Beaufschlagen mit Sterilluft über eine Trocknungseinrichtung 20 getrocknet und nach dem Übergang von der Sterilisationszone 15 in die Füll- und Siegelzone 16 in eine Füllposition 21 unterhalb eines Füllauslaufs 22 gebracht werden. Dort werden die Packungskörper C nacheinander mit einem Produkt 23, insbesondere mit einem fließfähigen Lebensmittel, gefüllt. Die gefüllten Packungskörper C werden sodann mit einer Verschließeinrichtung 24 durch Falten des oberen Bereichs des Packungskörpers C und Siegeln verschlossen. Die gefüllten und verschlossenen Packungen P werden anschließend aus den Zellen 11 der Transporteinrichtung 12 entnommen. Die nun leeren Zellen 11 werden mit der Transporteinrichtung 12 weiter in Richtung des Dornrads 6 bewegt, um dort erneut weitere Packungskörper C aufzunehmen.Sterile air is supplied to the aseptic chamber 14 via corresponding sterile air connections 17. The packing bodies C are preheated in succession by a preheating device 18 by blowing with hot sterile air. The package bodies C are then sterilized by means of a sterilization device 19, preferably using H 2 O 2 (hydrogen peroxide), whereupon the package bodies C are dried by exposure to sterile air via a drying device 20 and after the transition from the sterilization zone 15 to the filling and sealing zone 16 are brought into a filling position 21 below a filling outlet 22. There, the packing bodies C are successively filled with a product 23, in particular with a flowable food. The filled packing bodies C are then with a closing device 24 closed by folding the upper region of the package body C and sealing. The filled and sealed packs P are then removed from the cells 11 of the transport device 12. The now empty cells 11 are moved further with the transport device 12 in the direction of the mandrel wheel 6 in order to take up further packing bodies C there.

Wenn es sich bei den herzustellenden Packungen um solche mit quadratischem oder rechteckigem Querschnitt, also quaderförmige Packungen handelt, ist die Verwendung eines Dornrades in einer Füllmaschine unproblematisch, da der quadratische oder rechteckige Querschnitt des Dornes auf den inneren lichten Querschnitt des aufzuschiebenden Packungsmantels angepasst ist. Problematisch wird es dann, wenn die Packungsform von der herkömmlichen quaderförmigen Form abweicht und beispielsweise abgerundete oder runde Kanten bzw. Flächen aufweist, deren Rundung zum Boden (bzw. Giebel) hin allmählich abnimmt und wiederum in einem quadratischen und oder rechteckigen Boden (bzw. Giebel) endet. Hierbei bereitet das Aufschieben eines entsprechend aufgefalteten Packungsmantels auf den Dorn Schwierigkeiten, da die Faltkanten der späteren Packung nicht mehr mit den Ecken des Kopfs des Dornes übereinstimmen. Dies kann dazu führen, dass die Packungen nicht ganz auf den Dorn aufgeschoben werden können, so dass sich beim Versiegeln der Eckbereiche sogenannte ,Taschen' bilden, welche zu späteren Undichtigkeiten der Packungen führen können.If the packs to be produced are those with a square or rectangular cross section, that is to say cuboid packs, the use of a mandrel wheel in a filling machine is unproblematic since the square or rectangular cross section of the mandrel is matched to the inner clear cross section of the pack casing to be pushed open. It becomes problematic when the package shape deviates from the conventional cuboid shape and has, for example, rounded or round edges or surfaces whose curvature gradually decreases towards the floor (or gable) and again in a square and / or rectangular bottom (or gable) ) ends. Here, pushing a correspondingly unfolded packing sleeve onto the mandrel is difficult, since the folded edges of the later pack no longer match the corners of the head of the mandrel. This can mean that the packs cannot be pushed all the way onto the mandrel, so that so-called 'pockets' form when the corner areas are sealed, which can lead to later leaks in the packs.

Davon ausgehend liegt der Erfindung die Aufgabe zu Grunde, die eingangs genannte und zuvor näher beschriebene Vorrichtung zum Verschließen von Packungsmänteln so auszugestalten und weiterzubilden, dass eine zuverlässige und insbesondere taschenfreie Versiegelung des Endbereiches eines Packungsmantels auf dem Dorn zuverlässig gewährleistet ist.Proceeding from this, the invention is based on the object of designing and developing the aforementioned device for closing packing sleeves in such a way that reliable and, in particular, pocket-free sealing of the end region of a packing sleeve on the mandrel is reliably guaranteed.

Diese Aufgabe wird bei einer Vorrichtung mit den Merkmalen des Oberbegriffs von Anspruch 1 dadurch gelöst, dass wenigstens zwei Ecksegmente des Kopfs in ihrer Lage veränderbar sind, der Dorn in seinem Inneren wenigstens einen axial verfahrbaren Stößel zur Verstellung der Kopfgeometrie aufweist und dass die Ecksegmente des Kopfs als Schwenkelemente ausgeführt sind, welche von einer Siegelstellung in eine eingefahrene Stellung verbringbar sind.This object is achieved in a device with the features of the preamble of claim 1 in that at least two corner segments of the head in its Position can be changed, the mandrel has at least one axially movable plunger for adjusting the head geometry in its interior and that the corner segments of the head are designed as pivoting elements which can be moved from a sealing position into a retracted position.

Auf diese Weise wird zuverlässig sichergestellt, dass sich die auf den Dorn aufgeschobene Packung problemlos aufschieben lässt, da der Kopf des Dorns beim Aufschieben "eingefaltet" ist und erst nach dem Aufschieben in die zur Siegelung notwendigen Form gebracht wird. Dazu sind erfindungsgemäß wenigstens zwei Ecksegmente des Kopfs in ihrer Lage veränderbar. Sie lassen sich dazu aus den Ecken ins Innere des Dorns verschwenken.In this way, it is reliably ensured that the package pushed onto the mandrel can be pushed on without any problems, since the head of the mandrel is "folded in" when pushed on and is only brought into the form required for sealing after being pushed on. For this purpose, according to the invention, at least two corner segments of the head can be changed in their position. To do this, they can be swiveled from the corners into the interior of the mandrel.

Zur Verstellung der Kopfgeometrie weist der Dorn darüber hinaus in seinem Inneren wenigstens einen axial verfahrbaren Stößel auf. Bevorzugt ist dazu der Stößel mit einem Segment des Kopfs verbunden, welches als Hubsegment ausgeführt ist und das durch die Bewegung des Stößels ins Innere des Dorns verfahrbar ist.To adjust the head geometry, the mandrel also has at least one axially movable plunger in its interior. For this purpose, the plunger is preferably connected to a segment of the head which is designed as a lifting segment and which can be moved into the interior of the mandrel by the movement of the plunger.

Erfindungsgemäß sind außerdem die zu verlagernden Ecksegmente des Kopfs als Schwenksegmente ausgeführt, welche von einer Siegelstellung in eine eingefahrene Stellung verbringbar sind.According to the invention, the corner segments of the head to be displaced are also designed as swivel segments which can be moved from a sealing position into a retracted position.

Bevorzugt sind die Schwenksegmente derart federbelastet ausgeführt, dass sie nach dem zwangsbetätigten Verschwenken in ihre eingefahrene Stellung wieder in ihre Siegelstellung zurückschwenken. Die Ausbildung der Ecksegmente als Schwenksegmente ist insbesondere deshalb von Vorteil, da sie mit stabilen Schwenkachsen ausgestattet sein können, um den Druck beim Verpressen während des Siegelvorgangs aufnehmen zu können.The pivoting segments are preferably designed to be spring-loaded in such a way that they pivot back into their sealed position after the positively actuated pivoting into their retracted position. The design of the corner segments as pivot segments is particularly advantageous because they can be equipped with stable pivot axes in order to be able to absorb the pressure during the pressing process during the sealing process.

In einer ersten bevorzugten Ausgestaltung der Erfindung weist der Dorn zwei benachbarte Ecksegmente und ein dazwischenliegendes Hubsegment auf. Eine alternative Ausführungsform sieht vor, dass der Dorn vier Ecksegmente und zwei jeweils zwischen zwei benachbarten Ecksegmenten liegende Hubsegmente aufweist. Die jeweils optimale Ausgestaltung des erfindungsgemäßen ,Spreizdorns' wird sich im Regelfall nach der tatsächlichen Geometrie der herzustellenden Packungen richten. Falls es ausreicht, lediglich zwei Ecksegmente des Kopfs eines Dornes verschwenkbar auszugestalten, wird man aufgrund des geringeren konstruktiven Aufwandes diese Lösung wählen, andernfalls ist es erfindungsgemäß jedoch auch möglich, alle vier Ecken des Kopfs des Dorns mit verstellbaren Ecksegmenten auszuführen.In a first preferred embodiment of the invention, the mandrel has two adjacent corner segments and an intermediate lifting segment. An alternative embodiment provides that the mandrel has four corner segments and two each has lifting segments lying between two adjacent corner segments. The optimal design of the 'expanding mandrel' according to the invention will generally depend on the actual geometry of the packs to be produced. If it is sufficient to design only two corner segments of the head of a mandrel to be pivotable, this solution will be chosen due to the lower design effort, otherwise it is also possible according to the invention to design all four corners of the head of the mandrel with adjustable corner segments.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass die Kraftübertragung vom Stößel auf die Ecksegmente mittels einem Kurvengetriebe erfolgt. Alternativ ist es jedoch auch möglich, dass die Kraftübertragung vom Stößel auf die Ecksegmente mittels einem Kniehebel erfolgt, wobei dann jedes zu verschwenkende Ecksegment einen eigenen Kniehebel aufweist.In a further embodiment of the invention it is provided that the force transmission from the tappet to the corner segments takes place by means of a cam mechanism. Alternatively, however, it is also possible for the force to be transmitted from the tappet to the corner segments by means of a toggle lever, in which case each corner segment to be pivoted has its own toggle lever.

Zum Erreichen der axialen Bewegung des Stößels im Inneren des Dorns sieht die Erfindung in weiterer Ausgestaltung vor, dass der Stößel dornradseitig mittels einer stationär auf dem Außenumfang des Dornrades angeordneten Kulissenführung bewegbar ist. Dazu ist bevorzugt die Kulissenführung auf bzw. in einer Führungshülse ausgebildet, welche drehfest auf dem Dornrad oder der Antriebswelle des Dornrades angeordnet ist. Auf diese Weise kann die Drehbewegung des Dornrades für die Verstellung des Stößels ausgenutzt werden, in dem der Antrieb des Stößels durch die - feststehende - Kulissenführung derart betätigbar ist, dass jeder Dornradstellung eine bestimmte Stößelposition zugeordnet werden kann.In order to achieve the axial movement of the tappet in the interior of the mandrel, the invention provides in a further embodiment that the tappet can be moved on the mandrel wheel side by means of a link guide arranged stationary on the outer circumference of the mandrel wheel. For this purpose, the link guide is preferably formed on or in a guide sleeve which is arranged in a rotationally fixed manner on the mandrel wheel or the drive shaft of the mandrel wheel. In this way, the rotary movement of the mandrel wheel can be used for the adjustment of the tappet, in which the drive of the tappet can be actuated by the - fixed - link guide such that a specific tappet position can be assigned to each mandrel wheel position.

Dazu ist in weiterer Ausgestaltung der Erfindung vorgesehen, dass ein Führungselement mit einem Kurvengetriebe zur Übertragung der parallel zur Dornradwelle verlaufenden Steuerbewegung auf den radial zur Dornradwelle bewegbaren Stößel vorgesehen ist. Bevorzugt weist dazu das Führungselement auf der dem Stößel zugewandten Seite eine Führungsbahn und der Stößel an seinem dornradseitigen Ende eine Rolle zum Abrollen auf der Führungsbahn des Führungselements auf. Auf diese Weise ist durch die mechanische Kopplung von Dornradstellung und Stößelstellung der Kopf des Dorns in seiner Aufschiebeposition stets komplett ,eingefaltet' und wird dann bei der weiteren Drehung des Dornrades gleichmäßig in seine ,ausgefaltete' Siegelstellung überführt, in der sich sämtliche Schwenkelemente und Hubsegmente in ihrer Siegelposition befinden.For this purpose, in a further embodiment of the invention it is provided that a guide element with a cam mechanism for transmitting the control movement running parallel to the mandrel gear shaft is provided on the tappet which is movable radially to the mandrel gear shaft. For this purpose, the guide element preferably has a guide track on the side facing the tappet and the tappet has a roller on its end on the mandrel wheel side for rolling on the guide track of the guide element. In this way the mechanical coupling of Mandrel wheel position and plunger position the head of the mandrel in its push-on position is always completely "folded" and is then evenly transferred to its "unfolded" sealing position in the further rotation of the mandrel wheel, in which all swivel elements and lifting segments are in their sealing position.

Nach einer weiteren bevorzugten Ausgestaltung der Erfindung ist der Stößel in seiner Länge verstellbar ausgeführt. Dies ist für die Feinjustierung von besonderem Vorteil und kann auch noch bei eingebauten Dornen, beispielsweise zu Wartungs- oder Reparaturzwecken ohne Demontage des Dorns erfolgen.According to a further preferred embodiment of the invention, the ram is adjustable in length. This is of particular advantage for the fine adjustment and can also be done with installed mandrels, for example for maintenance or repair purposes, without dismantling the mandrel.

Eine weitere Lehre der Erfindung sieht vor, dass der Dorn wenigstens teilweise hohl ausgeführt ist. Auf diese Weise lassen sich sämtliche für die Verstellung der Kopfsegmente erforderlichen Antriebsteile und deren Lagerung auch bei bereits auf der Dornradwelle angebrachtem Dorn gut erreichen.Another teaching of the invention provides that the mandrel is at least partially hollow. In this way, all the drive parts required for the adjustment of the head segments and their storage can be easily reached even with the mandrel already attached to the mandrel wheel shaft.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass die offenen Bereiche des Dorns mit wenigstens einer Abdeckung versehen sind. Auf diese Weise lässt sich die mechanische Konstruktion des Stößelantriebes gut vor Verschmutzung und Eindringen von Fremdkörpern schützen.In a further embodiment of the invention it is provided that the open areas of the mandrel are provided with at least one cover. In this way, the mechanical design of the tappet drive can be well protected against contamination and penetration of foreign bodies.

Damit der auf den Dorn aufgeschobene Packungsmantel auch bei der Drehung des Dorns zuverlässig an seinem aufgeschobenen Ort verbleibt, ist nach einer weiteren Ausgestaltung der Erfindung vorgesehen, dass der Dorn wenigstens ein auf seine Längsseite wirkendes Federelement aufweist, welches den aufgeschobenen Packungsmantel in seiner Lage fixiert.So that the packing sleeve pushed onto the mandrel remains reliably in its pushed-on location even when the mandrel rotates, according to a further embodiment of the invention it is provided that the mandrel has at least one spring element acting on its longitudinal side, which fixes the pushed-on packing jacket in its position.

Dazu kann es weiterhin von Vorteil sein, wenn nach einer weiteren Lehre der Erfindung der Dorn in seinem massiven Inneren Leitungen für Kühlwasser aufweist. Dies ist besonders zweckmäßig, da auf diese Weise eine aktive Kühlung des Kopfbereiches des Dorns erfolgen kann, um die Tacktzeiten des Dornrades bestmöglich reduzieren zu können. Bei einer wassergekühlten Ausführung ist die Dornradwelle hohl ausgeführt und wird das Kühlwasser durch entsprechende Leitungen in Inneren der Dornradwelle in sich bekannter Weise durch die einzelnen Dorne geleitet.For this purpose, it can furthermore be advantageous if, according to a further teaching of the invention, the mandrel has lines for cooling water in its solid interior. This is particularly expedient, since in this way the head region of the mandrel can be actively cooled in order to be able to reduce the tacking times of the mandrel wheel in the best possible way. For a water-cooled version, that is Dornradwelle hollow and the cooling water is passed through appropriate lines inside the mandrel gear shaft in a known manner through the individual mandrels.

Schließlich sieht eine weitere Ausgestaltung der Erfindung vor, dass der Dorn über einen oder mehrere Endanschläge zur mechanischen Begrenzung des Aufschiebeweges für den Packungsmantel verfügt.Finally, a further embodiment of the invention provides that the mandrel has one or more end stops for mechanically limiting the opening path for the packing jacket.

Die Erfindung wird nachfolgend anhand einer lediglich bevorzugte Ausführungsbeispiele darstellenden Zeichnung näher erläutert.The invention is explained in more detail below with the aid of a drawing which represents only preferred exemplary embodiments.

In der Zeichnung zeigen:

Fig. 1
einen Dorn einer erfindungsgemäßen Vorrichtung in Seitenansicht in eingefahrener Stellung,
Fig. 2
den Gegenstand aus Fig. 1 in einem Vertikalschnitt entlang der Linie II-II,
Fig. 3
den Gegenstand aus Fig. 1 in einem Vertikalschnitt entlang der Linie III-III,
Fig. 4
einen Dorn einer erfindungsgemäßen Vorrichtung in Seitenansicht in Siegelstellung,
Fig. 5
den Gegenstand aus Fig. 4 in einem Vertikalschnitt entlang der Linie V-V,
Fig. 6
ein erstes Ausführungsbeispiel des Kopfs eines erfindungsgemäßen Dorns mit zwei schwenkbaren Ecksegmenten in perspektivischer Darstellung,
Fig. 7
ein alternatives Ausführungsbeispiel des Kopfs eines erfindungsgemäßen Dorns mit vier schwenkbaren Ecksegmenten in perspektivischer Darstellung,
Fig. 8
den Gegenstand aus Fig. 4 in perspektivischer Darstellung und
Fig. 9
eine aus dem Stand der Technik bekannte Vorrichtung zum Füllen von oben offenen Verpackungen in schematischer Seitenansicht.
The drawing shows:
Fig. 1
a mandrel of a device according to the invention in side view in the retracted position,
Fig. 2
the object Fig. 1 in a vertical section along the line II-II,
Fig. 3
the object Fig. 1 in a vertical section along the line III-III,
Fig. 4
a mandrel of a device according to the invention in side view in the sealing position,
Fig. 5
the object Fig. 4 in a vertical section along the line VV,
Fig. 6
a first embodiment of the head of a mandrel according to the invention with two pivotable corner segments in a perspective view,
Fig. 7
an alternative embodiment of the head of a mandrel according to the invention with four pivotable corner segments in a perspective view,
Fig. 8
the object Fig. 4 in perspective and
Fig. 9
a known from the prior art device for filling open-topped packaging in a schematic side view.

Fig. 1 zeigt einen erfindungsgemäßen Dorn 7 mit einem nach oben gerichteten Kopf 25, wobei der Dorn 7 auf einer Dornradwelle 26 befestigt ist. Im Bereich des Kopfes 25 erkennt man deutlich schwenkbare Ecksegmente 27, welche sich nicht in ihrer ausgefahrenen Siegelstellung befinden, sondern in ihrer eingefahrenen Schwenkstellung, um zu ermöglichen, dass das Aufschieben eines (nicht dargestellten) Packungsmantels von oben auf den Dorn 7 erleichtert wird. Zwei die Ecksegmente 27 aufweisenden Schwenkelemente sind dabei mit entsprechend stabil ausgebildeten Schwenkachsen 28 am Gehäuse des Dorns 7 beweglich gelagert. Zur Betätigung der Schwenkelemente dient ein Stößel 29, welcher im dargestellten und insoweit bevorzugten Ausführungsbeispiel zweiteilig ausgeführt ist und dazu einen unteren Stößel 29A und einen oberen Stößel 29B umfasst. Die Stößel 29A und 29B sind dabei mittels Lagerblöcken 30 axial verschiebbar gelagert. Am unteren Ende des unteren Stößels 29A befindet sich ein Kugellager 31, dessen Rolle auf einer Führungsbahn 32 eines Führungselements 33 abrollbar ist. Das Führungselement 33 ist dabei in Richtung des gezeigten Doppelpfeils über eine entsprechende Führung parallel zur Dornradwelle 26 längsverschiebbar ausgeführt und über eine Kulissenführung gesteuert. Dazu weist das Führungselement 33 an seinem in der Fig. 1 gezeigten linken Ende ein als Kulissenstein wirkendes Kugellager 34 auf, welches in einer Führungsnut 35 einer feststehenden Führungshülse 36 geführt wird. Die Führungsnut 35 ist im dargestellten Ausführungsbeispiel so ausgeführt, dass eine Verschwenkung der Dornradwelle 26 um 180° ein Verfahren des Führungselements 33 von seiner gezeigten Stellung, bei der die Schwenkelemente 27 "eingefaltet" sind, in eine Siegelstellung bringen lässt, in der die Schwenkelemente 27 ausgeklappt sind. Dazu ist die Führungshülse 36 stationär ausgeführt, sie dreht sich also bei Drehung der Dornradwelle 26 nicht mit. Die Dornradwelle 26 wird von einer Antriebswelle 37 angetrieben und kann - je nach Anzahl der Bearbeitungslinien in der Füllmaschine - entsprechend weitere Dorne 7 enthalten. Fig. 1 shows a mandrel 7 according to the invention with an upwardly directed head 25, the mandrel 7 being fastened to a mandrel wheel shaft 26. In the area of the head 25, one can see clearly pivotable corner segments 27, which are not in their extended sealing position, but rather in their retracted pivoting position, in order to make it easier for a packing jacket (not shown) to be pushed onto the mandrel 7 from above. Two pivot elements having the corner segments 27 are movably mounted on the housing of the mandrel 7 with appropriately stable pivot axes 28. A plunger 29 is used to actuate the pivoting elements. The plunger 29 is designed in two parts in the illustrated and preferred embodiment and includes a lower plunger 29A and an upper plunger 29B. The plungers 29A and 29B are axially displaceably supported by means of bearing blocks 30. At the lower end of the lower plunger 29A there is a ball bearing 31, the roller of which can be rolled on a guide track 32 of a guide element 33. The guide element 33 is designed to be longitudinally displaceable in the direction of the double arrow shown via a corresponding guide parallel to the mandrel gear shaft 26 and is controlled via a link guide. For this purpose, the guide element 33 on its in the Fig. 1 shown left end on acting as a sliding block ball bearing 34 which is guided in a guide groove 35 of a fixed guide sleeve 36. In the exemplary embodiment shown, the guide groove 35 is designed such that a pivoting of the mandrel gear shaft 26 by 180 ° moves the guide element 33 away from it shown position, in which the pivot elements 27 are "folded", can be brought into a sealing position in which the pivot elements 27 are folded out. For this purpose, the guide sleeve 36 is stationary, ie it does not rotate when the mandrel gear shaft 26 rotates. The mandrel wheel shaft 26 is driven by a drive shaft 37 and can - depending on the number of processing lines in the filling machine - correspondingly contain additional mandrels 7.

Unterer Stößel 29A und oberer Stößel 29B sind mittels eines Verbindungselements 38 verbunden und sorgen dafür, dass sich bei der Betätigung des Stößels 29A, 29B nach oben ein Hubsegment 39 axial nach oben bewegt, um die Lücke zwischen den beiden schwenkbaren Ecksegmenten 27 auf der Kopfoberfläche zu schließen. Dazu ist der obere Stößel 29B im Bereich zwischen den die Ecksegmente 27 aufweisenden Schwenkelementen mittels eines als Führungshülse ausgebildeten Lagers 40 gelagert. Die Schwenkbewegung der die Ecksegmente 27 aufweisenden Schwenkelemente erfolgt dabei mittels einem Führungselement 41, welches zu den beiden Schwenkelementen hin verlaufende Kurvenbahnen 42 aufweist. Die Schwenkelemente selbst haben in diesem Bereich drehbare Kugellager 43, welche auf den Kurvenbahnen 42 des Führungselementes 41 abrollen. Nicht erkennbar ist, dass zur Realisierung dieser Kurvensteuerung die beiden Ecksegmente 27 mittels einer zwischen ihnen angeordneten Druckfeder derart miteinander wirkverbunden sind, dass die beiden Ecksegmente 27 nur gegen den Druck der Feder von ihrer Siegelstellung in die eingefaltete Stellung bewegbar sind. Die Druckfeder befindet sich dazu in der nicht näher bezeichneten Nut, die in Fig. 3 links neben dem Hubsegment 39 im Kopf 25 des Dorns 7 erkennbar ist.Lower plunger 29A and upper plunger 29B are connected by means of a connecting element 38 and ensure that when the plunger 29A, 29B is actuated upwards, a lifting segment 39 moves axially upwards in order to close the gap between the two pivotable corner segments 27 on the head surface shut down. For this purpose, the upper plunger 29B is mounted in the area between the pivot elements having the corner segments 27 by means of a bearing 40 designed as a guide sleeve. The pivoting movement of the pivoting elements having the corner segments 27 takes place by means of a guide element 41 which has curved tracks 42 running towards the two pivoting elements. The swivel elements themselves have rotatable ball bearings 43 in this area, which roll on the cam tracks 42 of the guide element 41. It cannot be seen that in order to implement this cam control, the two corner segments 27 are operatively connected to one another by means of a compression spring arranged between them in such a way that the two corner segments 27 can only be moved from their sealing position into the folded position against the pressure of the spring. The compression spring is in the unspecified groove that in Fig. 3 can be seen on the left next to the lifting segment 39 in the head 25 of the mandrel 7.

Weitere Druckfedern 44 sorgen dafür, dass sich der Stößel 29A, 29B mittels seines Kugellagers 31 stets in Kontakt mit der Führungsbahn 32 des Führungselements 33 befindet.Additional compression springs 44 ensure that the plunger 29A, 29B is always in contact with the guide track 32 of the guide element 33 by means of its ball bearing 31.

Der obere Stößel 29B ist im Bereich seines Verbindungselements 38 mit dem unteren Stößel 29A mittels einer Einstellmutter 45 zur Verstellung der Gesamtlänge längs verstellbar ausgeführt. Auf diese Weise lässt sich eine Feinjustierung des oberen Totpunkts des Hubsegments 39 zuverlässig und einfach auch bei fertig aufgebautem Dorn 7 bewerkstelligen.The upper plunger 29B is longitudinal in the region of its connecting element 38 with the lower plunger 29A by means of an adjusting nut 45 for adjusting the overall length adjustable. In this way, fine adjustment of the top dead center of the lifting segment 39 can be carried out reliably and simply, even when the mandrel 7 has been set up.

Die Verstellung vom oberen Stößel 29B mittels der Mutter 45 lässt sich insbesondere auch der gedrehten Seitenansicht in Fig. 2 entnehmen, in der der untere Stößel 29B nicht sichtbar ist. Der genaue Aufbau ergibt sich erst aus Fig. 3, in der auch der obere Teil des Dornes 7 entlang der Linie III-III in Fig. 1 geschnitten dargestellt ist. Den Fig. 2 und 3 ist ferner zu entnehmen, dass der Dorn 7 mittels Schrauben 46 auf der Dornradwelle 26 verschraubt ist. Dort ist auch die Längsverschieblichkeit des Führungselements 33 mittels einer Führungsschiene 33' deutlich erkennbar.The adjustment of the upper plunger 29B by means of the nut 45 can also be seen in particular in the rotated side view in FIG Fig. 2 in which the lower plunger 29B is not visible. The exact structure results from Fig. 3 , in which the upper part of the mandrel 7 along the line III-III in Fig. 1 is shown cut. The Fig. 2 and 3rd it can also be seen that the mandrel 7 is screwed onto the mandrel wheel shaft 26 by means of screws 46. The longitudinal displaceability of the guide element 33 can also be clearly seen there by means of a guide rail 33 '.

Die Fig. 4 und 5 entsprechen den Darstellungen der Fig. 1 und 3, wobei jedoch hier der Dorn 7 in seiner Siegelstellung gezeigt ist. Der besseren Vergleichbarkeit halber weist der Dorn in den Fig. 4 und 5 ebenfalls nach oben, auch wenn, wie bereits erläutert, sich im dargestellten und insoweit bevorzugten Ausführungsbeispiel die Siegelstellung diametral gegenüber der eingefahrenen Stellung der Schwenkelemente, also bei nach unten weisendem Dorn 7, befindet. Dementsprechend ist die eigentliche feststehende Führungshülse 36 in Fig. 4 um 180° gedreht dargestellt. Man erkennt zunächst, dass das Führungselement 33 sich mittels der Kulissenführung 34, 35 in seiner Endstellung befindet, so dass der untere Stößel 29A in seiner obersten Stellung gezeigt ist. Damit befindet sich selbstverständlich auch der obere Stößel 29B in seiner obersten Stellung und damit auch das Führungselement 41, so dass die Kugellager 43 entlang der Führungsbahn 42 des Führungselements 41 aufeinander zu gefahren sind und auf diese Weise eine Verschwenkung der Ecksegmente 27 der Schwenkelemente in ihre äußere Siegelstellung bewirkt haben. Das Hubsegment 39 befindet sich schließlich ebenfalls in seiner höchsten Stellung in Siegelposition.The Fig. 4 and 5 correspond to the representations of Fig. 1 and 3rd , but here the mandrel 7 is shown in its sealing position. For the sake of better comparability, the mandrel points to the Fig. 4 and 5 likewise upwards, even if, as already explained, the sealing position is diametrically opposite the retracted position of the pivoting elements, that is to say with the mandrel 7 pointing downward, in the exemplary embodiment shown and in this respect preferred. Accordingly, the actual stationary guide sleeve 36 is in Fig. 4 shown rotated by 180 °. It can first be seen that the guide element 33 is in its end position by means of the link guide 34, 35, so that the lower plunger 29A is shown in its uppermost position. Thus, of course, the upper plunger 29B is in its uppermost position and thus also the guide element 41, so that the ball bearings 43 are moved towards one another along the guide track 42 of the guide element 41 and in this way a pivoting of the corner segments 27 of the pivoting elements into their outer Seal position. The lifting segment 39 is finally also in its highest position in the sealing position.

Diese Siegelposition und Ausbildung des Kopfes 25 des Dorns 7 ist zur besseren Darstellung in Fig. 7 perspektivisch dargestellt. Man erkennt deutlich, dass die gesamte Stirnfläche des Kopfes 25 nunmehr geschlossen ist und dass die beiden Ecksegmente 27 sich nun in ihrer - ausgefalteten - Siegelposition befinden und der dazwischen befindliche Hohlraum vom Hubsegment 39 ausgefüllt ist. Die nicht näher bezeichneten Hohlräume auf der Stirnfläche dienen - in bekannter Weise - dazu, die sich beim Einfalten der freien Mantelflächen des aufgeschobenen Packungsmantels insbesondere im Bereich der umgelegten Quernaht übereinander bildende Materialhäufung aufzunehmen, so dass beim Versiegeln des beispielsweise Packungsbodens eine ebene Fläche erzeugt wird, welche als Standfläche der späteren Packung dient.This sealing position and formation of the head 25 of the mandrel 7 is shown in FIG Fig. 7 shown in perspective. It can be clearly seen that the entire end face of the head 25 is now closed and that the two Corner segments 27 are now in their - unfolded - sealing position and the cavity located between them is filled by the lifting segment 39. The cavities on the end face, which are not described in any more detail, serve, in a known manner, to absorb the material accumulation which forms when the free outer surfaces of the pushed-on packing jacket are folded in, in particular in the area of the folded transverse seam, so that a flat surface is produced when the packing base is sealed, for example. which serves as a stand for the later pack.

Aus Fig. 6 geht auch noch deutlich hervor, dass die die Ecksegmente aufweisenden Schwenkelemente mit relativ stark ausgebildeten Schwenkachsen 28 ausgestattet sind, um den Druck beim Verpressen standhalten zu können.Out Fig. 6 it is also clear that the pivot elements having the corner segments are equipped with relatively strong pivot axes 28 in order to be able to withstand the pressure during the pressing.

Wie bereits ausgeführt, ist das bisher beschriebene Ausführungsbeispiel ein Dorn 7, welcher lediglich über zwei verschwenkbare Ecksegmente 27 verfügt. Es ist jedoch ohne weiteres möglich, in einer weiteren Ausgestaltung die bereits beschriebene Konstruktion zum Verschwenken der Ecksegmente 27 auch auf der anderen Seite des Dornes vorzusehen. Eine entsprechende Ausführung ist in Fig. 7 dargestellt. Bei diesem alternativen Ausführungsbeispiels 7' sind vier Ecksegmente 27' als schwenkbare Segmente auf entsprechenden Schwenkelementen angeordnet, wobei sich zwischen jeweils zwei Ecksegmenten 27' ein Hubsegment 39' befindet.As already stated, the exemplary embodiment described so far is a mandrel 7 which has only two pivotable corner segments 27. However, it is readily possible, in a further embodiment, to also provide the construction already described for pivoting the corner segments 27 on the other side of the mandrel. A corresponding version is in Fig. 7 shown. In this alternative exemplary embodiment 7 ', four corner segments 27' are arranged as pivotable segments on corresponding pivot elements, a lifting segment 39 'being located between two corner segments 27'.

Der Antrieb für die Verschwenkung der Ecksegmente 27' kann dabei so ausgebildet sein, wie in Fig. 6, in Fig. 7 ist jedoch dargestellt, dass die Übertragung der Kraft des Stößels 29' auf die Ecksegmente 27' alternativ auch mittels jeweils einem Kniehebel 47A bzw. 47B erfolgen kann, wobei jeder Kniehebel mittels zwei Achsen 48 einerseits im Schwenkelement und andererseits im Hubsegment 39' gelagert ist. Die Schwenkelemente sind dabei auf entsprechenden Schwenkachsen 38' schwenkbar am Dorn 7' gelagert.The drive for pivoting the corner segments 27 'can be designed as in FIG Fig. 6 , in Fig. 7 it is shown, however, that the force of the tappet 29 'can alternatively be transmitted to the corner segments 27' by means of a toggle lever 47A or 47B, each toggle lever being supported by means of two axes 48 on the one hand in the swivel element and on the other hand in the lifting segment 39 '. The pivot elements are pivotally mounted on corresponding pivot axes 38 'on the mandrel 7'.

In Fig. 8 ist dargestellt, dass seitlich am Dorn Federelemente 49 angeordnet sein können, welche ein Verrutschen eines einmal aufgeschobenen (nicht dargestellten) Packungsmantels auf den Dorn 7 zuverlässig verhindern. Auch ist Fig. 8 zu entnehmen, dass der "offene" Teil des Dorns 7 mittels einer Abdeckung 50, deren Oberfläche der tatsächlichen Packungsausgestaltung entspricht und im gezeigten Ausführungsbeispiel eine runde Seitenwandung aufweist, verschlossen ist und so die innere Mechanik des Dorns 7 schützt.In Fig. 8 it is shown that spring elements 49 can be arranged on the side of the mandrel, which reliably prevent a packaging jacket (not shown) from slipping onto the mandrel 7 once it has been pushed on. Is too Fig. 8 It can be seen that the "open" part of the mandrel 7 is closed by means of a cover 50, the surface of which corresponds to the actual package design and, in the exemplary embodiment shown, has a round side wall, and thus protects the internal mechanics of the mandrel 7.

Schließlich kann der Dorn 7 über Leitungen 51, 52 zum Durchleiten von Kühlwasser verfügen. Wie aus den Fig. 1 und 2 hervorgeht, ist die Dornradwelle 26 in einem solchen Fall hohl ausgeführt. Im Inneren dieses Hohlraums ist dann ein für sich bekanntes Verteilelement für das Kühlwasser angeordnet, welches starr ausgeführt ist und über entsprechende Umfangsnuten dafür sorgt, dass unter Druck stehendes Kühlwasser durch die Leitung 51 in das Innere des Dornes gepresst wird und aus der Abflussleitung 52 wieder in das Verteilelement geführt wird. Dazu sind die beiden Leitungen 51 und 52 im oberen Bereich des Dorns 7 und/oder im Kopf 25 mittels einer Verbindungsnut 53 miteinander verbunden. Das Verteilelement ist dazu starr im Inneren der sich drehenden Dornradwelle angeordnet und sorgt über entsprechende Zu- und Abflussleitungen dafür, dass die Dorne 7 an den gewünschten Stationen bzw. über bestimmte Wegstrecken beim Drehen temperiert werden können. So kann eine Kühlung nach dem Siegelvorgang durch Beaufschlagung mit Kühlwasser bedingt durch die Drehung der Dornradwelle 26 gewissermaßen "automatisch" erfolgen.Finally, the mandrel 7 can have lines 51, 52 for the passage of cooling water. Like from the Fig. 1 and 2nd emerges, the mandrel gear shaft 26 is hollow in such a case. A known distribution element for the cooling water is then arranged in the interior of this cavity, which is of rigid design and ensures, via corresponding circumferential grooves, that pressurized cooling water is pressed through line 51 into the interior of the mandrel and out of the drain line 52 again the distribution element is guided. For this purpose, the two lines 51 and 52 are connected to one another in the upper region of the mandrel 7 and / or in the head 25 by means of a connecting groove 53. For this purpose, the distribution element is rigidly arranged inside the rotating mandrel wheel shaft and, via appropriate inlet and outlet lines, ensures that the mandrels 7 can be tempered at the desired stations or over certain distances when turning. Thus, cooling after the sealing process can be carried out "automatically" to a certain extent due to the application of cooling water due to the rotation of the mandrel wheel shaft 26.

Claims (17)

  1. Device for single-sided closure of packaging sleeves (S) for the production of composite packages, in particular carton/plastic-composite packages, by forming by means of a mandrel wheel (6) with a plurality of mandrels (7) arranged distributed uniformly over the circumference and directed radially outwards, which pass successively through several processing stations in the circumferential direction of the mandrel wheel (6), wherein each mandrel (7) has a head (25) on its free end, on which the folding sections to be closed of the packaging sleeve (S) slid onto the mandrel (7) are folded and sealed in the closed position, and wherein the head (25) of the mandrel (7) is designed to be variable in its outer dimensions,
    characterised in that
    at least two corner segments (27) of the head (25) are variable in their position, that the mandrel (7) in its interior has at least one axially movable tappet (29A, 29B) for the adjustment of the head geometry and that the corner segments (27) of the head (25) are designed as pivot elements, which can be brought from a sealing position into a retracted position.
  2. Device according to Claim 1
    characterised in that
    the tappet (29B) is connected with a segment of the head (25), which is designed as lifting segment (39) and is movable through the movement of the tappet (29B) into the interior of the mandrel (7).
  3. Device according to Claim 1 or 2,
    characterised in that
    the pivot elements are spring-loaded in such a manner that they pivot back again into their sealing position after the forcibly actuated pivot into their retracted position.
  4. Device according to Claim 2 or 3,
    characterised in that
    the mandrel (7) has two adjacent corner segments (27) and a lifting segment (39) lying in between.
  5. Device according to Claim 2 or 3,
    characterised in that
    the mandrel (7) has four corner segments (27') and two lifting segments (39') lying in each case between two adjacent corner segments (27').
  6. Device according to Claim 1,
    characterised in that
    the force transmission takes place from the tappet (29B) to the corner segments (27) by means of a cam gear (41, 42).
  7. Device according to Claim 1,
    characterised in that
    the force transmission takes place from the tappet (29') to the corner segments (27') by means of a toggle lever (47A, 47B).
  8. Device according to any one of Claims 2 to 7,
    characterised in that
    the tappet (29A) on the mandrel-wheel side is movable by means of a slotted guide (34, 35) arranged in a stationary manner on the outer circumference of the mandrel wheel (6).
  9. Device according to Claim 8,
    characterised in that
    the slotted guide (34, 35) is arranged on or in a guide sleeve (36) and that the guide sleeve (36) is arranged in a rotationally fixed manner on the mandrel wheel (6) or the drive shaft (37) of the mandrel wheel (6).
  10. Device according to Claim 8 or 9,
    characterised in that
    a guide element (33) is provided with a cam gear for the transmission of the control movement of the guide element (33) running parallel to the mandrel wheel shaft (26) to the tappet (29A) movable radially to the mandrel wheel shaft (26).
  11. Device according to Claim 10,
    characterised in that
    the guide element on the side facing the tappet (29A) has a guideway (32) and the tappet (29A) on its end on the mandrel wheel side has a roller (31) for rolling on the guideway (32) of the guide element (33).
  12. Device according to any one of Claims 1 to 11,
    characterised in that
    the tappet (29A 29B) is designed adjustable in its length.
  13. Device according to any one of Claims 1 to 12,
    characterised in that
    the mandrel (7) is designed at least partially hollow.
  14. Device according to Claim 13,
    characterised in that
    the open areas of the mandrel (7) are provided with at least one cover (50).
  15. Device according to any one of Claims 1 to 14,
    characterised in that
    the mandrel (7) has at least one spring element (49) acting on its longitudinal side, which fixes the slid on packaging sleeve in its position.
  16. Device according to any one of Claims 1 to 15,
    characterised in that
    the mandrel (7) has lines (51, 52) for cooling water in its solid interior.
  17. Device according to any one of Claims 1 to 16,
    characterised in that
    the mandrel has one or several end stops for the mechanical limitation of the sliding path for the packaging sleeve.
EP17712073.0A 2016-04-04 2017-03-16 Device for one-sided closure of package sleeves for the production of composite packages Active EP3439972B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17712073T PL3439972T3 (en) 2016-04-04 2017-03-16 Device for one-sided closure of package sleeves for the production of composite packages

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016106139 2016-04-04
DE102016110008.0A DE102016110008A1 (en) 2016-04-04 2016-05-31 Device for one-sided sealing of packaging coats for the production of composite packages
PCT/EP2017/056215 WO2017174321A1 (en) 2016-04-04 2017-03-16 Device for one-sided closure of package sleeves for the production of composite packages

Publications (2)

Publication Number Publication Date
EP3439972A1 EP3439972A1 (en) 2019-02-13
EP3439972B1 true EP3439972B1 (en) 2020-04-29

Family

ID=59885632

Family Applications (6)

Application Number Title Priority Date Filing Date
EP17709081.8A Active EP3439970B1 (en) 2016-04-04 2017-03-07 Method and device for forming packaging bodies open on one side from packaging jackets open on both sides
EP17712073.0A Active EP3439972B1 (en) 2016-04-04 2017-03-16 Device for one-sided closure of package sleeves for the production of composite packages
EP17711151.5A Active EP3439964B1 (en) 2016-04-04 2017-03-16 Apparatus and method for forming the gable surfaces of packs with a sloping gable
EP17712477.3A Active EP3439974B1 (en) 2016-04-04 2017-03-21 Device for forming closed packages
EP19190904.3A Withdrawn EP3581507A1 (en) 2016-04-04 2017-03-21 Method of forming closed packages
EP17716150.2A Active EP3439971B1 (en) 2016-04-04 2017-04-03 Method and apparatus for forming pack bodies which are open on one side from pack sleeves which are open on both sides

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Application Number Title Priority Date Filing Date
EP17709081.8A Active EP3439970B1 (en) 2016-04-04 2017-03-07 Method and device for forming packaging bodies open on one side from packaging jackets open on both sides

Family Applications After (4)

Application Number Title Priority Date Filing Date
EP17711151.5A Active EP3439964B1 (en) 2016-04-04 2017-03-16 Apparatus and method for forming the gable surfaces of packs with a sloping gable
EP17712477.3A Active EP3439974B1 (en) 2016-04-04 2017-03-21 Device for forming closed packages
EP19190904.3A Withdrawn EP3581507A1 (en) 2016-04-04 2017-03-21 Method of forming closed packages
EP17716150.2A Active EP3439971B1 (en) 2016-04-04 2017-04-03 Method and apparatus for forming pack bodies which are open on one side from pack sleeves which are open on both sides

Country Status (8)

Country Link
US (5) US20190112082A1 (en)
EP (6) EP3439970B1 (en)
JP (4) JP2019510705A (en)
CN (5) CN109153467A (en)
DE (5) DE102016109980A1 (en)
ES (4) ES2802449T3 (en)
PL (4) PL3439964T3 (en)
WO (5) WO2017174280A1 (en)

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US8915365B2 (en) * 2013-03-15 2014-12-23 Altria Client Services Inc. Packaging sleeve
EP3219631B1 (en) * 2016-03-18 2018-11-07 Tetra Laval Holdings & Finance S.A. A forming device and method for forming a pack into a finished package, a folding unit for forming sealed packages of pourable food products.
DE102016109980A1 (en) * 2016-04-04 2017-10-05 Sig Technology Ag Apparatus and method for forming the gable surfaces of packages with sloping gables
DE102017127327A1 (en) * 2017-11-20 2019-05-23 Sig Technology Ag Filling machine with cooling devices for cooling different plant parts
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