Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
  • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
  • B65B43/28—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers co-operating with fixed supports
  • B65B43/285—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers co-operating with fixed supports specially adapted for 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
  • B65B43/12—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
  • B65B43/12—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
  • B65B43/20—Feeding individual bags or carton blanks from piles or magazines by reciprocating or oscillating pushers
  • B65B43/205—Feeding individual bags or carton blanks from piles or magazines by reciprocating or oscillating pushers 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
  • B65B43/32—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
  • B65B43/52—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 roller-ways or endless conveyors

Definitions

• the invention relates to a device for unfolding packaging coats comprising: a device for providing the flat packing shells, a transfer unit which is rotatable about a rotation axis and has at least one suction element for sucking the packing shells, wherein the suction element is at a distance from the axis of rotation, and a Conveyor belt with at least one for receiving the
• the invention further relates to a method for unfolding of pack coats, comprising the following steps: providing the packaging coats by means of a device, sucking and continuing the packaging coats by means of a transfer unit rotating around a rotation axis with at least one suction element, and unfolding the packaging coats by inserting the packaging coats into one a cell attached to a conveyor belt.
• Folding devices are required which pull apart the flat packing sheaths from both sides to bring them into the unfolded form.
• Such a folding device is known from EP 0 112 605 A2.
• the flat packing shells are sucked in from both sides by suction elements.
• the other leg is from the conveyor belt and should hold the packing jacket sideways.
• a hook is provided which is intended to hold the packing jacket in position between the two brackets.
• the rotating unit has arms with suction cups, the perform a radial movement in the direction of the conveyor belt in addition to a rotational movement in order to transfer the packing shells to the conveyor belt.
• the insertion of the packing shells between the two L-shaped brackets is made possible by inserting the packing shells at a point where the conveyor belt is arcuate, so that the protruding legs of the L-shaped brackets are not parallel but spread apart. Only after the introduction of
• Packungsmäntel is the conveyor belt in a straight course, wherein the spread of the protruding legs of the bracket goes back and the packing jacket between the now parallel extending projecting legs of the bracket is clamped.
• Transition area is not provided in contrast.
• the invention is therefore based on the object as well as the above-mentioned and previously described method to design and further develop the above-mentioned method such that, even with a simple construction and a simple procedure a reliable unfolding and transfer of the packaging coats on the task the conveyor belt is made possible.
• This object is achieved in a device according to the preamble of claim 1, characterized in that the distance between the suction element and the axis of rotation is constant, so that the packing shells are guided along a circular path.
• An aspect of the present invention is that the suction - and Thus, also sucked by the suction elements packing shells - are guided along a circular path.
• the transfer unit can be constructed particularly uncomplicated and inexpensive, for example, the transfer unit may have a cylindrical drum as the main component.
• the transfer unit of a device according to the invention is characterized by a particularly great robustness, as can be largely dispensed with movable components.
• the elimination of moving parts also has (food) hygienic advantages, since the lubrication of these parts is also eliminated.
• the conveyor belt runs straight in the region of the device.
• the conveyor belt leaves the area of the device, however, a straight course of the conveyor belt is no longer required; In this area, the conveyor belt can also be deflected.
• the conveyor belt is curved in the region of the device.
• the conveyor belt in the area of Device along a circular path.
• the arrangement of the device in a curved or circular portion of the conveyor belt has the advantage that even those areas in which the conveyor belt is deflected, can be exploited. This allows a particularly compact design of a system for folding, filling and sealing ofmaschinesmänteln.
• a further embodiment of the invention provides that the device has at least one movably mounted finger with a projection for separating the flat packing shells.
• the height of the projection preferably corresponds to the height of a flatly folded packing sheath.
• the finger can be moved back and forth. This linear movement in the longitudinal direction can be superimposed by a movement in the transverse direction, so that the finger moves in total along an approximately oval trajectory.
• This construction ensures that the finger with the projection engages exactly one packing jacket and pushes it away from the stack during each cycle of movement
• the finger may have a well-defined stroke, so that the stacked packing jacket can be advanced into a desired position in order to be sucked by the suction elements can. By varying the stroke, the location at which the suction elements attack the packing shells can be changed.
• the stroke can, for example, in the range between 1 cm and 4 cm, in particular between 2 cm and
• the device has a shaft for guiding the packing shells whose center plane has an offset relative to the axis of rotation of the transfer unit.
• the length of the offset can be, for example, in the range between 1 cm and 6 cm, in particular between 2 cm and
• Transfer unit may have more than one suction element. If several
• suction elements in the same radial distance from the axis of rotation of the transfer unit to be able to safely suck the packing coats.
• the suction elements may be arranged in a row such that each packing jacket is sucked in by several suction elements at the same time.
• several rows of suction elements may be provided on the transfer unit. In this way, several packing shells can be sucked and unfolded with each revolution of the transfer unit.
• the rows of suction elements are arranged distributed in identical intervals to one another uniformly over the circumference of the transfer unit.
• the suction elements are inclined by an angle with respect to a tangential plane contacting the circular path.
• the angle may be, for example, in the range between 1 ° and 10 °, in particular between 3 ° and 6 °.
• the suction elements are preferably inclined in the direction of the direction of rotation of the transfer unit.
• the inclination has the advantage that the suction elements do not get caught on the packaging coats stored in the magazine. This danger is due to the fact that the circumferential edges of non-inclined suction elements lie in a tangential plane, so that seen in the direction of rotation foremost and rearmost point of a non-inclined Saugelements have a greater radial distance from the axis of rotation than that
• Suction elements are guided.
• the suction elements can better by the inclination on the packing shells be put on.
• the suction elements can better by the inclination of Saugeiemente and the magazine, which contains the packaging coats, even by one
• a further embodiment of the invention provides that the cells have two rigid side walls.
• a rigid rear wall may be provided.
• a wall is understood that is rigid and in particular is not pivoting or folding. Rigid sidewalls offer a better
• a rigid back wall provides a good attachment for the side walls.
• the side walls of the cells project perpendicularly from the rear wall and / or the conveyor belt.
• the unfolding of the packing shells is supported, as well as the packing shells in the unfolded state should have 90 ° angle.
• Another teaching of the invention provides that the cells at least one
• the packing shells can be grasped particularly well behind and can be reliably held in the cell.
• the minimum distance between the circular path of the suction elements and the rear wall of the cell is smaller than the length of the side walls of the cells.
• the depth at which the suction elements "dive" into the cells can be in the range between 1 mm and 10 mm, depending on the format of the packaging material.
• the guidance of the packing case along a circular path has the advantage of a particularly simple procedure, in particular, no displacement of the packing element in the radial direction has to take place.
• Transfer unit rotates at an angular speed, which is always greater than zero.
• the transfer unit should therefore be stopped at any time, as would be the case with an intermittent operation.
• the angular velocity can be
• the transfer unit can also rotate at a constant angular velocity.
• Accelerating and decelerating the transfer unit can be used.
• a constant angular velocity has a positive effect on the service life of the machine, while operation with changing angular velocity or even intermittent operation usually shortens the service life.
• a further embodiment of the method provides that the conveyor belt moves at a speed which is always greater than zero. As was previously done for the angular velocity of the transfer unit, should also
• the speed of the conveyor belt corresponds approximately to
• Suction elements sucked packing coats and their associated cells are brought together with exact timing.
• the unfolding of the packaging coats succeeds However, since the front edge of the packing jacket has a greater radial distance from the axis of rotation of the transfer unit than the suction elements and therefore also has a higher web speed than the suction elements and the cells.
• Packing coats are singled in the device by a movably mounted finger, which moves with a stroke in the range between 1 cm and 4 cm.
• the stroke in the direction of the packing shells corresponds to the distance by which the stacked packing sheath is advanced.
• the attack position of the suction elements can be changed to the packing coats.
• the angle of rotation ⁇ begins in the region of the magazine at 0 ° and increases in the further course of the rotation of the transfer unit.
• the negative pressure can already be built up to 10 ° before reaching the magazine, in the range of the minimum distance between suction elements and conveyor belt is the Drehwinke! preferably about 180 °.
• the negative pressure should preferably be built up just before reaching the magazine by air is sucked.
• a further embodiment of the method provides that the suction elements in the angular range of 125 ° ⁇ ⁇ 145 ° again reduce the negative pressure.
• the vacuum should be reduced to the
• the suction elements suck the packing shells at a distance away from their center, which lies in the range between 0 cm and 6 cm, in particular between 1 cm and 3 cm.
• the distance to the center can be in the range between 10% and 40% of the width of the packing shells.
• Fig. 1A is a known from the prior art blank for folding a
• FIG. 1B shows a packing jacket known from the prior art, which is formed from the blank shown in FIG. 1A, in the flat folded state
• FIG. 1C shows the packing jacket from FIG. 1B in the unfolded state
• FIG. Fig. 2 shows an inventive device for unfolding
• Fig. 3 is a known from the prior art system for filling
• a known from the prior art blank 1 is shown, from which a packing jacket can be formed.
• the blank 1 may comprise a plurality of layers of different materials, for example paper, cardboard, plastic or metal, in particular aluminum.
• the blank 1 has a plurality of fold lines 2, which are intended to facilitate the folding of the blank 1 and divide the blank 1 into several areas.
• the blank 1 may be subdivided into a first side surface 3, a second side surface 4, a front surface 5, a rear surface 6, a sealing surface 7, four bottom surfaces 8 and four surface surfaces 9. From the blank 1, a
• Packing jacket are formed by the blank 1 is folded such that the sealing surface 7 connected to the front surface 5, in particular can be welded.
• FIG. 1B shows a packing jacket 10 known from the prior art in the flat folded state. Those already described in connection with Fig. 1A
• Packing jacket 10 is formed from the blank 1 shown in FIG. 1A.
• the blank 1 has been folded such that the sealing surface 7 and the front surface 5 are arranged overlapping, so that the two surfaces can be welded together flat.
• a longitudinal seam 11 is formed.
• FIG. 1B the packing jacket 10 is shown in a flat folded state. In this state, one side surface 4 (hidden in Fig. 1B) lies below the front surface 5 while the other side surface 3 lies on the rear surface 6 (obscured in Fig. 1B).
• FIG. 1B the packing jacket 10 is shown in a flat folded state. In this state, one side surface 4 (hidden in Fig. 1B) lies below the front surface 5 while the other side surface 3 lies on the rear surface 6 (obscured in Fig. 1B).
• FIG. 1B the packing jacket 10 is shown in a flat folded state. In this state, one side surface 4 (hidden in Fig. 1B) lies below the front surface 5 while the other side surface 3 lies on the rear surface 6 (obscure
• Packungsmäntel 10 are stacked particularly space-saving. Therefore, the packing shells 10 are often stacked at the place of manufacture and stacked transported to the place of filling. Only there are the packing coats
• FIG. 1C shows the packing jacket 10 from FIG. 1B in the unfolded state.
• the unfolded state is understood to be a configuration in which an angle of approximately 90 ° forms between the two respectively adjacent surfaces 3, 4, 5, 6, so that the
• Packing jacket 10 - depending on the shape of these surfaces - has a square or rectangular cross-section. Accordingly, the opposite side surfaces 3, 4 are arranged parallel to each other. The same applies to the front surface 5 and the rear surface 6.
• the packing shells 10 used can have different dimensions
• the width of the side surfaces 3, 4 may be in the range between 30 mm and 80 mm
• the width of the front surface 5 and the rear surface 6 may be in the range between 40 mm and 120 mm
• Flat folded packing shells The widths of the side surfaces 3, 4 and the front and rear surfaces 5, 6 can therefore be in the range between 50 and 30 mm (30 mm + 40 mm) and 200 mm (80 mm + 120 mm)
• outer dimensions of 47 mm ⁇ 32.5 mm ⁇ 55 mm are obtained, and for a package with a filling volume of 2000 ml, this results in external dimensions of 114 mm ⁇ 74 mm ⁇ 245 mm.
• Fig. 2 shows an inventive device 12 for unfolding
• the device 12 comprises a device 13 for providing, in particular for separating flat packing sheaths 10, a transfer unit 14 and a conveyor belt 15.
• the device 13, which is also referred to as a "magazine" has a housing 16 with a shaft 17, into which a stack of flat packing shells 10 can be placed in.
• the shaft 17 has a center plane 18, which is centered through the shaft 17 2, the center plane 18 can be oriented perpendicular to the conveyor belt 15. Alternatively, the center plane 18 can also be inclined with respect to this vertical line 13.
• the device 13 also has a plurality of fingers 19 arranged one behind the other in a row. each having a projection 20.
• the height of the projection 20 corresponds approximately to the height of a flat folded packaging jacket 10.
• the hub 21 is indicated in Fig. 2 with an arrow through the Reciprocating the fingers 19 is achieved that the fingers 19 with its projection 20 pro
• Movement cycle each push out a packing jacket 10 through an opening 22 of the device 13 to be taken over there by the transfer unit 14 can.
• the remaining packing shells 10 are continuously pushed by a force F directed in the direction of the fingers 19, so that a continuous stacking and separation of the packing shells 10 is ensured
• the transfer unit 14 comprises a drum 23 to which a plurality of suction elements 24 are attached.
• the illustrated in Fig. 2 and so far preferred drum 23 has a cylindrical shape and thus a circular cross-sectional area.
• the four rows of suction elements 24 are arranged on a circular path 25 at a constant distance 26 or radius, wherein the circular path 25 through the center of the
• Suction elements 24 extends The suction elements 24 are fixed in position, so that all suction elements 24 always have the same, unchangeable distance to a rotation axis 27 around which the drum 23 rotates at an angular velocity co and by a rotation angle ⁇ .
• the device 13 and the transfer unit 14 are arranged such that between the rotation axis 27 of the transfer unit 14 and the
• the suction elements 24 are preferably slightly inclined, so that the edges of the suction elements 24 lie in a plane 29 which is inclined ⁇ relative to a tangential plane 30 of the circular path 25 at an angle ⁇ in this way, the suction elements 24 are slightly in the direction of rotation of the drum 23rd inclined and can suck the packing coats 10 better.
• the conveyor belt 15 runs straight in the section shown in FIG. 2 and has a speed v.
• the conveyor belt 15 may be
• the cells 31 comprise a rear wall 32 and two side walls 33.
• the rear wall 32 runs parallel to the conveyor belt 15 and is connected thereto.
• the two side walls 33 are perpendicular from the rear wall 32; they are therefore arranged parallel to each other.
• the rear wall 32 and the two side walls 33 are made of metal and have no joints or the like, so that it is a rigid cell 31 so far.
• the cells 31 have two spring elements 34, wherein preferably on each side wall 33, a spring element 34 is arranged.
• the spring elements 34 are made of an elastic material, for example a
• the cells 31 are arranged at a constant distance 36 from one another, which is also referred to as a "stitch.” This distance 36 corresponds approximately to the length of one
• the transfer unit 14 is arranged opposite the conveyor belt 15 such that between the circular path 25 of the suction elements 24 and the rear wall 32 of the cells 31, a minimum distance 37 is formed is slightly smaller than the length of the side walls 33 of the cells 31 so that the suction elements 24 "dive" into the cells at a depth 37 'in the area between the two side walls 33. A collision can be prevented by placing in the side walls 33 of the cells 31 and in the spring elements 34
• Recesses are provided, through which the suction elements 24 can be performed.
• the unfolding of the packing shells 10 takes place by the following steps: First, a packing sheath 10 is pushed out of the feeding device 13 through the projection 20 of the finger 19 through the opening 22. There will be the
• the leading edge 38 of the packing jacket 10 first abuts the cell 31. Strictly speaking, a corner between the rear wall 32 and one of the side walls 33 of the cell 31 serves as a stop for the edge 38. As soon as the edge 38 of the packing jacket 10 touches the cell 31, forces in the packing jacket are only at two locations apart from centrifugal forces 10 introduced: first, in the region of the suction element 24, which leads the packing jacket 10, and secondly on the front edge 38 of the packing jacket 10. These two locations have a distance 39 to each other.
• Vacuum 42 away from its center corresponds approximately to the sum of the stroke 21 and the offset 28 and may for example be in the range between 0 cm and 6 cm and in particular between 1 cm and 3 cm, in relation to the width of the packing shells 10, the distance 42 to the center in Range between 10% and 40% of the width of the packaging 10 coats.
• FIG. 3 shows a system 43 known from the prior art for filling food packs (EP 0 112 605 A2).
• the individual stations of the system 43 are shown only schematically in FIG. 3, since FIG. 3 is merely intended to serve as a possible field of application of a device 12 according to the invention for the purpose of FIG. 3
• the packing shells 10 (not shown in FIG. 3) are unfolded by a station 44 and transferred to the cells 31 of the conveyor belt 15.
• the station 44 can be replaced by the device 12 according to the invention.
• the system 43 comprises a first rotary 45 in which the gable surfaces 9 of the packing shells 10 are prefolded.
• the packing shells 10 then pass through a station 46, in which the bottom surfaces 8 of the packing shells 10 are prefolded. After the prefolding, the

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Supplying Of Containers To The Packaging Station (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2013
  • 2013-05-23 DE DE102013105260.6A patent/DE102013105260A1/de not_active Withdrawn
• 2014
  • 2014-03-25 CN CN201480029790.4A patent/CN105246784A/zh active Pending
  • 2014-03-25 RU RU2015155246A patent/RU2015155246A/ru not_active Application Discontinuation
  • 2014-03-25 BR BR112015029244A patent/BR112015029244A2/pt not_active IP Right Cessation
  • 2014-03-25 EP EP14711993.7A patent/EP2999632A1/de not_active Withdrawn
  • 2014-03-25 WO PCT/EP2014/055922 patent/WO2014187592A1/de active Application Filing
  • 2014-03-25 AU AU2014270728A patent/AU2014270728A1/en not_active Abandoned
  • 2014-03-25 JP JP2016514304A patent/JP2016522124A/ja active Pending
  • 2014-03-25 MX MX2015015631A patent/MX2015015631A/es unknown
  • 2014-03-25 US US14/892,048 patent/US20160107779A1/en not_active Abandoned
  • 2014-04-01 TW TW103112123A patent/TW201446595A/zh unknown
• 2015
  • 2015-11-06 ZA ZA2015/08205A patent/ZA201508205B/en unknown

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