EP4269052A2 - Dispositif de découpe d'emballages alimentaires, système comprenant une lame de coupe et un logement de lame de coupe, procédé de conversion du dispositif et procédé de modification d'une distance de deux lames de coupe - Google Patents

Dispositif de découpe d'emballages alimentaires, système comprenant une lame de coupe et un logement de lame de coupe, procédé de conversion du dispositif et procédé de modification d'une distance de deux lames de coupe Download PDF

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Publication number
EP4269052A2
EP4269052A2 EP23162936.1A EP23162936A EP4269052A2 EP 4269052 A2 EP4269052 A2 EP 4269052A2 EP 23162936 A EP23162936 A EP 23162936A EP 4269052 A2 EP4269052 A2 EP 4269052A2
Authority
EP
European Patent Office
Prior art keywords
cutting knife
fixing
shaft
lower shaft
cutting
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.)
Pending
Application number
EP23162936.1A
Other languages
German (de)
English (en)
Other versions
EP4269052A3 (fr
Inventor
Stephan Clössner
Karsten Roth
Markus Gerhardt
Ralf Mengel
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.)
Weber Food Technology GmbH
Original Assignee
Weber Maschinenbau GmbH Breidenbach
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 Weber Maschinenbau GmbH Breidenbach filed Critical Weber Maschinenbau GmbH Breidenbach
Publication of EP4269052A2 publication Critical patent/EP4269052A2/fr
Publication of EP4269052A3 publication Critical patent/EP4269052A3/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • 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
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/08—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting using rotary cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging

Definitions

  • the invention relates to a device for cutting food packaging along a longitudinal direction, with an upper shaft in operation, on which at least a first cutting knife is arranged, and a lower shaft in operation, on which at least a second cutting knife is arranged.
  • Devices for cutting food packaging along a longitudinal direction are known and are used, among other things, in packaging machines for sausage and cheese. Such devices are used to cut packages filled with food and then sealed but still coherent in the longitudinal direction, i.e. in the product conveying direction.
  • Packaging machines with a device for cutting food packaging along a longitudinal direction are usually part of a food processing line.
  • Such food processing lines may include a slicer, in particular high-performance slicer, which cuts a food product into slices, for example sausage slices or cheese slices.
  • These food slices are usually packaged in portions by the packaging machine into coherent packages, which are then cut apart into individual packages along their longitudinal direction using the device for cutting food packages.
  • the portions can also consist of just one slice or one piece.
  • the food processing line is to process a different product with different packaging dimensions, it is necessary to convert the food processing line.
  • This also includes adapting the device for cutting food packaging along its length to a changed packaging width.
  • the upper shaft and the lower shaft during operation i.e. to remove them, to arrange the cutting blades on the shafts according to the new packaging width and then to reinsert the shafts.
  • converting the lower shaft during operation is complex and takes a relatively long time.
  • a device for cutting food packaging along a longitudinal direction according to claim 1 and in particular in that the device defines at least one shaft receptacle with a support surface for the lower shaft and that the device has a relative to the at least one shaft receptacle between a release position and a fixing position movable fixing element, which is designed to release the lower shaft in the release position for removal from the shaft receptacle, and in the fixing position to fix the lower shaft at least in the radial direction on the shaft receptacle.
  • the invention is based on the idea of simply placing the lower shaft in operation on a shaft holder for installation and then fixing the lower shaft on this shaft holder.
  • the wave recording therefore has a dual function:
  • the shaft holder serves as a storage place for the lower shaft during operation.
  • the shaft holder forms part of a bearing by means of which the lower shaft is mounted in the radial direction.
  • the fixing element holds the lower shaft in the shaft holder in the fixing position and releases the lower shaft in the release position.
  • the device for cutting food packaging along a longitudinal direction is part of a packaging machine.
  • the packaging machine can include a forming station, a sealing station, a labeling station and/or a cross-cutting station, i.e. a device for cross-cutting the food packaging.
  • the packaging machine can be part of a food processing line.
  • the food processing line can include a slicer, in particular a high-performance slicer, a portioning belt, a sorting and conveying line and/or an insertion station with an inserter or picking robot.
  • the fixing element can be moved between the release position and the fixing position without tools.
  • the fixing element can be movable between the release position and the fixing position without the use of a tool, such as a crank, a screwdriver or the like. This has the advantage that the fixing element can be adjusted quickly and easily and the lower shaft can therefore be converted more quickly.
  • the lower shaft during operation is rotatably mounted.
  • the at least one cutting blade arranged on the lower shaft can be coupled to the lower shaft in a rotationally fixed manner and still allow a rotational movement Carry out cutting of food packaging.
  • the lower shaft is preferably rotatably coupled to the shaft holder relative to the shaft holder.
  • the shaft holder and the fixing element are designed to jointly hold the lower shaft rotatably in the fixing position.
  • At least one bearing in particular rolling bearings, is arranged on the lower shaft.
  • the bearing In the fixing position, the bearing can be held together by the shaft holder and the fixing element.
  • at least two bearings, in particular rolling bearings are arranged on the lower shaft.
  • the two bearings, in particular rolling bearings are preferably arranged at a distance from one another on the lower shaft.
  • a separate shaft holder and a separate fixing element are provided for each bearing, in particular rolling bearings. Both bearings, in particular rolling bearings, can each be held together in the fixing position by one of the shaft receptacles and one of the fixing elements.
  • the fixing element can be moved in a guided manner between the release position and the fixing position.
  • the fixing element is pivotally mounted between the release position and the fixing position.
  • the fixing elements can be moved together, in particular pivotally, in a guided manner between the release position and the fixing position.
  • the fixing elements can, for example, be coupled to a pivotable structure, so that pivoting of the structure leads to a common pivoting movement of the fixing elements.
  • the pivotable structure can have a defined pivot axis and/or be pivotally mounted on a support structure.
  • the support structure can include at least one shaft holder.
  • the fixing element can be locked in the fixing position.
  • a locking device can be provided, for example The pivoting structure is locked so that it is secured against pivoting.
  • the lock is advantageously releasable in order to be able to move the at least one fixing element from the fixing position into the release position.
  • the fixing element can be locked in the fixing position without tools. It is also advantageous if the locking device can be released in the fixing position without tools.
  • the fixing element can be locked in the release position.
  • the locking device can be designed to lock the pivotable structure in the release position so that it is secured against pivoting. In order to make it even easier and quicker to convert the lower shaft, it is advantageous if the fixing element can be locked in the release position without tools. It is also advantageous if the locking device can be released in the release position without tools.
  • a particularly stable locking results when at least two locking devices spaced apart from one another are provided.
  • the locking devices can be activated and/or deactivated together or independently of one another.
  • a particularly precise locking can be achieved in that the locking device comprises at least one locking element with a thread and the locking element can be screwed to an element firmly connected to the support structure.
  • the locking element can thus have a thread in order to screw the locking element to the support structure for locking the fixing element.
  • the locking element can comprise a star-shaped handle in order to screw the locking element and the element connected to the support structure together without tools.
  • the lower shaft during operation can be driven by a motor.
  • a coupling can be provided to connect the lower shaft to a rotary drive.
  • the clutch is preferably switchable to separate the lower shaft from the rotary drive for removal of the lower shaft.
  • the clutch can be designed as a claw clutch.
  • the coupling can be engaged and/or disengaged by means of a movement, in particular a pivoting movement, of the fixing element between the release position and the fixing position.
  • an adjusting section for the clutch can be coupled to the fixing element such that a movement of the fixing element from the release position to the fixing position engages the clutch and consequently the rotation drive is coupled to the lower shaft, and that a movement of the fixing element from the fixing position
  • the clutch disengages in the release position and consequently the lower shaft and the rotary drive are decoupled from each other.
  • the support surface of the shaft holder is concave.
  • the support surface can define a potential minimum, so that the lower shaft, when placed on the shaft holder, lies laterally in the shaft holder in a defined manner in the radial direction.
  • the shaft holder or the fixing element preferably has axial fixing means for the lower shaft.
  • the shaft holder or the fixing element can have frontal fixing surfaces which, for example, contact the frontal stop surfaces of the lower shaft, in particular stop surfaces of a bearing firmly connected to the lower shaft, in order to hold the lower shaft in position in the axial direction.
  • the shaft holder or the fixing element can have alignment means in order to align the lower shaft in the axial direction when it is placed on the shaft holder.
  • the wave recording Have insertion bevels that cause axial alignment of the lower shaft when the lower shaft is placed on the support surface.
  • the fixing element can be shaped in such a way that the lower shaft aligns itself in the axial direction by pressing the fixing element.
  • the invention also relates to a system comprising a cutting knife holder for attachment to a lower shaft in operation of a device for cutting food packaging along a longitudinal direction, and a cutting knife for attachment to the cutting knife holder.
  • the cutting blade has a central recess.
  • the central recess is dimensioned such that the cutting knife can be moved in at least a certain rotational orientation along the lower shaft over the cutting knife holder.
  • the conversion of the lower shaft can be carried out much more quickly, since the cutting knife can be moved over the cutting knife holder and can therefore be removed from the lower shaft on both sides regardless of an axial adjustment of the cutting knife holder on the lower shaft.
  • the cutting knife can be moved along the lower shaft over the cutting knife holder to a further cutting knife holder and can be coupled to this further cutting knife holder.
  • the central recess is dimensioned such that the cutting knife can be moved in several rotational orientations along the lower shaft over the cutting knife holder.
  • the cutting knife can be fixed to the cutting knife holder by arranging it on the cutting knife holder and then rotating it relative to the cutting knife holder.
  • the fixation can be released again by turning the cutting knife relative to the cutting knife holder in the opposite direction.
  • the cutting knife can be firmly connected to the cutting knife holder when fixed to the cutting knife holder by means of connecting means, in particular screws.
  • connecting means in particular screws.
  • threads for screws can be provided on the cutting blade holder.
  • the cutting knife can be attached to the knife holder using the screws.
  • the central recess has a plurality of bay-shaped sections extending in the radial direction, i.e. sections that are shaped like sea bays.
  • the bay-shaped sections can be adapted in terms of their size and orientation to fixing sections of the cutting knife holder that extend in the radial direction, so that the bay-shaped sections allow the cutting knife to move over the cutting knife holder.
  • Receiving slots for fasteners preferably extend laterally from the bay-shaped sections.
  • the receiving slots are preferably dimensioned in terms of their width such that a width of a head of the fastening means is greater than the width of the receiving slot, but a width of a shaft of the fastening means is smaller than the width of the receiving slot.
  • the cutting knife can have at least one lateral recess or an opening.
  • the side depression or opening can serve as a handle.
  • the cutting knife can be made particularly light and can therefore be lifted out of the shaft holder without much effort if the cutting knife comprises several struts extending in the radial direction.
  • the struts extending in the radial direction can connect a coupling section of the cutting knife to a cutting edge section of the cutting knife.
  • Recesses can be provided between the struts.
  • the recesses can be designed to be used as grip recesses, in particular for lifting the cutting knife and a lower shaft coupled to the cutting knife. The recesses can penetrate the cutting blade in the axial direction.
  • the cutting knife can have a circumferential cutting edge.
  • the cutting edge can define a circle with a constant diameter.
  • the cutting edge can be welded onto the remaining cutting knife.
  • the invention also relates to a packaging machine with a device for cutting food packaging along a longitudinal direction according to one or more of the features mentioned above or below.
  • the device can be equipped with a system comprising a cutting knife holder for attachment to a lower shaft in operation of a device for cutting food packaging along a longitudinal direction and a cutting knife for attachment to the cutting knife holder according to one or more of the features mentioned above or mentioned below.
  • the invention also relates to a method for converting a lower shaft in operation of a device for cutting food packaging along a longitudinal direction, comprising the steps: placing the lower shaft on a support surface of a shaft holder, and moving a fixing element from a release position to a fixing position in order to hold the lower shaft between the shaft holder and the fixing element.
  • the movement of the fixing element from the release position to the fixing position is carried out without tools, i.e. without the use of tools.
  • the movement of the fixing element from the release position to the fixing position is carried out by hand.
  • a person entrusted with the conversion grabs the fixing element or a structure connected to the fixing element and thus moves the fixing element from the release position into the fixing position.
  • the method also includes moving the fixing element from the fixing position to the release position in order to release the lower shaft lying on the shaft holder.
  • Moving the fixing element from the fixing position to the release position is preferably carried out without tools. Moving the fixing element from the fixing position to the release position can be carried out by hand.
  • the fixing element can be moved without motor support.
  • the movement of the fixing element is effected entirely by muscle power.
  • the method includes locking the fixing element in the fixing position. After locking the fixing element in the fixing position, the device for cutting food packaging can be operated along a longitudinal direction. The method can also include releasing the locking of the fixing element in the fixing position.
  • the method can also include locking the fixing element in the release position. After locking the fixing element in the release position, the lower shaft can be safely removed from the shaft holder. The method can also include releasing the locking of the fixing element in the release position.
  • Locking in the fixing position and/or in the release position can include locking several locking devices. This can happen simultaneously or one after the other.
  • the locking preferably includes screwing a locking element into a locking element receptacle or generally screwing a locking element with a mating thread on the support structure.
  • moving the fixing element from the release position to the fixing position and/or from the fixing position to the release position includes pivoting the fixing element.
  • the fixing element can, for example, be coupled to a pivotable structure, which is preferably pivoted by a person.
  • moving the fixing member from the release position to the fixing position includes engaging a clutch between the lower shaft and a rotation drive for the lower shaft. Moving the fixing element from the release position to the fixing position can cause the clutch to engage.
  • Moving the fixing member from the fixing position to the releasing position may include disengaging the clutch between the lower shaft and the lower shaft rotation drive. Moving the fixing element of from the fixing position to the release position can cause the clutch to disengage.
  • the invention also relates to a method for changing an axial position of a cutting knife on a lower shaft during operation of a device for cutting food packaging along a longitudinal direction, with the steps: Decoupling a cutting knife from a fixing section of a cutting knife holder coupled to the lower shaft,
  • Decoupling the cutting knife can include a rotational movement of the cutting knife relative to the cutting knife holder.
  • fixing the cutting knife can include a rotational movement of the cutting knife relative to the cutting knife holder.
  • the decoupling of the cutting knife comprises a rotational movement of the cutting knife relative to the cutting knife receptacle in a first direction of rotation and the fixing of the cutting knife comprises a rotational movement of the cutting knife relative to the cutting knife receptacle in a second direction of rotation opposite to the first direction of rotation.
  • the method includes loosening fasteners, in particular screws, before decoupling the cutting knife.
  • the fastening means can preferably be connected to the cutting knife holder in such a way that the cutting knife is aligned with an alignment surface of the cutting knife holder.
  • the method includes fastening the cutting knife by means of fastening means, in particular screws, after fixing the cutting knife on the further cutting knife holder.
  • Fixing the cutting knife can include inserting at least one fastener into a receiving slot.
  • several cutting knives can be arranged on the lower shaft during operation.
  • the method can be used to change a distance between two cutting knives.
  • the packaging machine 12 shown which works in a transport direction T, comprises a machine frame 47.
  • the two transport chains 27 together form conveying means for a lower film 23 removed from a supply roll 23a.
  • the packaging machine 12 comprises a plurality of work stations following one another in the transport direction T, namely a forming station 11, also known as a thermoformer or thermoformer, an introduction station 13 for products 10 to be packaged, a feed station 14 for a top film 25 drawn off from a supply roll 25a, a sealing station 15 for connecting the bottom film 23 to the top film 25, a labeling station 16, a cross-cutting station 17 and a Longitudinal cutting station 19, ie a device 19 for cutting packages 21 along a longitudinal direction.
  • a forming station 11 also known as a thermoformer or thermoformer
  • an introduction station 13 for products 10 to be packaged
  • a feed station 14 for a top film 25 drawn off from a supply roll 25a
  • a sealing station 15 for connecting the bottom film 23 to the top film 25
  • a labeling station 16 a cross-cutting station 17
  • a Longitudinal cutting station 19 for cutting packages 21 along a longitudinal direction.
  • the products 10 to be packaged are, for example, food products, here in the form of so-called portions, each of which comprises several slices, which were previously cut using a food slicer (not shown) from a loaf or bar-shaped food such as sausage, cheese, ham or Meat was separated.
  • the operation of the packaging machine 12, including the work stations mentioned, is controlled by a central control device 41.
  • the packaging machine 12 is provided with an operating device 45, which includes, for example, a touchscreen on which all the necessary information can be displayed to an operator and the operator can make all the necessary settings can be carried out during operation of the machine.
  • depressions 29, also known as troughs, are formed in the lower film 23 in a deep-drawing process.
  • the mentioned products or portions 10 are inserted into these depressions 29 at the introduction station 13.
  • the insertion station 13 here includes a so-called inserter, of which two endless conveyor belts 13a, 13b are shown.
  • the introduction station 13 can include a robot 50, also shown schematically here, for example in the form of a so-called "picker”, which can be designed as a delta robot with a gripper 52, which includes two blades each holding a portion 10 together.
  • picker can be designed as a delta robot with a gripper 52, which includes two blades each holding a portion 10 together.
  • Such robots and their use in handling food, in particular when inserting portions into recesses in packaging, are generally known to those skilled in the art, which is why further details are not necessary here.
  • the sealing station 15 which comprises an upper tool 15a and a lower tool 15b.
  • the upper film 25 and the lower film 23 are connected to one another.
  • the depressions 29 and thus the packaging 21 formed by the top film 25 and bottom film 23 are closed.
  • Sealing points 43 running transversely to the transport direction T also known as sealing seams, are indicated schematically.
  • the packages 21 are still connected by the top film 25 and the bottom film 23, so they still have to be separated.
  • the transverse cutting station 17 and the longitudinal cutting station 19 serve for this purpose.
  • the longitudinal cutting station ie the device 19 for cutting food packaging 21 along the longitudinal direction.
  • the longitudinal direction corresponds to the transport direction T.
  • the device 19 includes an upper shaft 54 (see 11A and 11B ), on which the first cutting blades 56 are arranged.
  • the device 19 also includes a lower shaft 58 (see Fig. 2 to 10 ), on which second cutting blades 60 are arranged.
  • the first cutting blades 56 and the second cutting blades 60 together form cutting units, in particular roller shear cutting units. Distances between the cutting units in the direction of the shafts 54, 58 define widths of the isolated packages 21.
  • the following is in relation to the Figures 2 to 5 discussed the improved storage of the lower shaft 58, which makes it possible to detach the lower shaft 58 from a support structure 62 of the device 19 in a quick and uncomplicated manner.
  • the support structure 62 is preferably part of the machine frame 47.
  • the support structure 62 includes two shaft receptacles 64a and 64b (see Fig. 6 ). Each of the shaft receptacles 64a and 64b defines a concave support surface 66a, 66b for the lower shaft 58.
  • the shaft receptacles 64a and 64b are designed to be open at the top, so that the lower shaft 58 can be placed into the shaft receptacles 64a and 64b from above or obliquely above and can be removed upwards or diagonally from the shaft receptacles 64a and 64b.
  • a structure 68 which is pivotable relative to the shaft receptacles 64a and 64b and the lower shaft 58 is attached.
  • Fixing elements 70a, 70b are arranged on the pivotable structure 68, which can be moved by pivoting the pivotable structure 68 between a release position (see Fig. 2 and 4 ) and a fixing position (see Fig. 3 and 5 ) move. In the release position, the fixing elements 70 release the lower shaft 58, so that the lower shaft 58 can be lifted up or diagonally upwards by hand from the shaft receptacles 64a and 64b.
  • the fixing elements 70a, 70b do not release the lower shaft 58 in their fixing position, so that the lower shaft 58 cannot be lifted out of the shaft receptacles 64a and 64b. Instead, the fixing elements 70a, 70b hold the lower shaft 58 in the shaft receptacles 64a and 64b and fix the lower shaft 58. In other words, the shaft receptacles 64a and 64b together with the fixing elements 70a, 70b form a bearing for the lower shaft 58.
  • each of the rolling bearings 72a, 72b has an inner ring which is fixed to the lower shaft 58.
  • each of the rolling bearings 72a, 72b has an outer ring which is designed to fit into one of the concave bearing surfaces 66a, 66b of the shaft receptacles 64a and 64b to be inserted.
  • the respective fixing element 70a, 70b presses from above against the outer ring of the rolling bearings 72a, 72b, so that the rolling bearings 72a, 72b and thus also the lower shaft 58 are fixed in the radial direction.
  • the shaft receptacles 64a and 64b also have axial stops 74a, 74b, which come into contact with side surfaces of the respective outer ring of the rolling bearings 72a, 72b in order to prevent the lower shaft 58 from moving in the axial direction, ie vertically to the transport direction T. So that the lower shaft 58 aligns itself correctly in the axial direction when inserted into the shaft receptacles 64a, 64b, an insertion bevel 76b is provided on at least one of the shaft receptacles 64a, 64b.
  • the insertion bevel 76b ensures that the rolling bearing 72b rests correctly aligned in the axial direction when inserted into the shaft holder 64b.
  • the shaft receptacle 64a not shown, preferably has an axial stop 74a, which secures the lower shaft 58 against movement in the axial direction that is not already secured by the stop 74b. As a result, the stops 74a and 74b secure the lower shaft 58 against axial movement in both axial directions of movement.
  • the first shaft receptacle 64a preferably has an insertion bevel 76a and the second shaft receptacle 64b has a second insertion bevel 76b, which are aligned opposite to one another. As a result, the lower shaft 58 is automatically aligned in the axial direction when inserted into the shaft receptacles 64a, 64b.
  • a locking device 78 for locking the pivotable structure 68 and thus the fixing elements 70a, 70b in the fixing position and in the release position.
  • the locking device 78 comprises a locking element 80, which in the present case serves to determine a distance between a pivot axis 82 of the pivotable structure 68 and a coupling point 84 between the pivotable structure 68 and the locking element 80, so that the structure 68 is inhibited in its pivotability.
  • the locking element 80 has a concave locking section 86 (see Fig. 4 and 5 ), which partially surrounds the pivot axis 82 in a locking position.
  • the locking element 80, as well as the pivotable structure 68 can be adjusted by hand or with the foot without tools.
  • the device 19 includes a clutch 88.
  • the clutch 88 includes a first claw 90, which is coupled in a rotationally fixed manner to the lower shaft 58, and a second claw 92, which is coupled in a rotationally fixed manner with an output shaft 93 of a rotary drive for the lower shaft 58 is.
  • the rotary drive can also be designed to drive the upper shaft 54 during operation.
  • the clutch 88 can be engaged by bringing the claw 92 into rotational engagement with the claw 90 (see Fig. 7 ).
  • the clutch 88 can be disengaged by disengaging the claw 92 from the claw 90 (see Fig. 6 ).
  • Adjusting sections 94, 96 on the pivotable structure 68 are used to engage and disengage the clutch 88.
  • the adjustment section 96 has a concave shape in order to make flat contact with an oblique outer peripheral surface 98 of the claw 92 and thus to displace the claw 92 in the axial direction in the direction of the claw 90.
  • the adjustment section 94 also has a concave shape in order to make flat contact with a second oblique outer peripheral surface 100 and thus to displace the claw 92 in the axial direction away from the claw 90.
  • each of the cutting knife holders 102a-e includes a closed inner peripheral surface 104 which is in contact with the lower shaft 58.
  • each of the cutting knife receptacles 102a-e includes fixing sections 103 which extend in the radial direction (see Fig. 9 ) with internal threads for receiving screws 106.
  • Each cutting blade 60a-e has a central recess 110 with bay-shaped sections 110a-e (see Fig. 8 ) on.
  • a bay-shaped section means that the section is shaped like a bay.
  • the bay-shaped sections 110a-e are dimensioned such that they correspond in shape and size to the fixing sections 103 (see Fig. 9 ) are adapted with an internal thread, so that the cutting blades 60 can be moved in the axial direction over the fixing sections 103 in several rotational orientations due to their central recess 110 with the bay-shaped sections 110a-e.
  • a receiving slot 112 for the shaft of the respective screw 106 is formed on one of the side edges of the bay-shaped sections 110a-e.
  • the shafts of the screws 106 can either be inserted into the receiving slots 112 - and thus the cutting knife 60 is fixed on the cutting knife holder 102 - or out of the receiving slots 112 into the bay-shaped sections 110 is introduced - and thus the cutting knife 60 is decoupled from the cutting knife holder 102. If the shafts of the screws 106 are arranged in the receiving slots 112, the cutting knife 60 can be fastened to its cutting knife holder 102 by tightening the screws 106.
  • the cutting knives 60 have a coupling section 108 defining the receiving slots 112 and a cutting edge section 114.
  • the coupling section 108 and the cutting edge section 114 are connected to one another by a plurality of struts 116.
  • Recesses 118 are provided between the struts 116 so that the cutting blades 60 are lighter than full-surface cutting blades and thus the lower shaft 58 can be lifted out of the shaft receptacle 64 more easily can be.
  • the recesses 118 can also be used as handles for lifting out the lower shaft 58.
  • a circumferential cutting edge 120 is formed on the outside of the cutting edge section 114. The circumferential cutting edge 120, together with a circumferential cutting edge of an upper cutting knife 56, cuts the packages in the longitudinal direction.
  • the upper shaft 54 is mounted in a support structure 122 that is separate from the support structure 62.
  • the separate support structure 122 can be decoupled from the support structure 62 by a pivoting movement and can then be removed upwards or obliquely from the support structure 62.
  • the separate support structure 122 can be coupled to the support structure 62 or placed on the support structure 62 by a pivoting movement.
  • the support structure 62 has a plug-in receptacle 124, into which a nose 126 of the separate support structure 122 can be inserted and which together form a pivot axis for the separate support structure 122.
  • FIG. 12A, 12B and 13 a further embodiment of a device 19' for cutting food packaging 21 along the longitudinal direction is shown.
  • the device 19' differs from the previously described device 19 in terms of its locking device 78' for locking the pivotable structure 68'.
  • the locking device 78' is designed to lock the pivotable structure 68' and thus the fixing elements 70a', 70b' in their fixing position.
  • the locking device 78 ' comprises a locking element 80' (see Fig. 13 ) with an external thread which can be screwed into a locking element receptacle 128' which is firmly connected to a support structure 62'.
  • the locking element receptacle 128 has an internal thread that matches the external thread.
  • the locking element has an internal thread and can be screwed onto an external thread.
  • a star-shaped handle 130 is arranged on the end region of the locking element 80' opposite the thread in order to simplify carrying out the screwing movement.
  • the locking element 80' is thus connected to the support structure 62' by twisting in a direction of rotation in order to lock the pivotable structure 68' and thus the fixing elements 70a', 70b' in their fixing position.
  • the locking element 80' is released from the support structure 62' in order to release the pivotable structure 68' and thus the fixing elements 70a', 70b'.
  • the fixing elements 70a' and 70b' can be removable from the pivotable structure 68' after they have been decoupled from the support structure 62'.
  • a locking element receptacle can be provided on the pivotable structure 68' and the locking element 80' can only be inserted through the locking element receptacle and then screwed to the support structure 62' be when the pivoting structure 68 'is in the locking position.
  • the locking device 78 shown in FIGS. 12A to 13 enables a particularly precise and reliable tool-free locking of the fixing elements 70a' and 70b'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Details Of Cutting Devices (AREA)
EP23162936.1A 2022-04-04 2023-03-20 Dispositif de découpe d'emballages alimentaires, système comprenant une lame de coupe et un logement de lame de coupe, procédé de conversion du dispositif et procédé de modification d'une distance de deux lames de coupe Pending EP4269052A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022108015.3A DE102022108015A1 (de) 2022-04-04 2022-04-04 Vorrichtung zum Zuschneiden von Lebensmittelverpackungen, System mit einem Schneidmesser und einer Schneidmesseraufnahme, Verfahren zum Umrüsten der Vorrichtung und Verfahren zum Verändern eines Abstandes zweier Schneidmesser

Publications (2)

Publication Number Publication Date
EP4269052A2 true EP4269052A2 (fr) 2023-11-01
EP4269052A3 EP4269052A3 (fr) 2024-01-17

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Application Number Title Priority Date Filing Date
EP23162936.1A Pending EP4269052A3 (fr) 2022-04-04 2023-03-20 Dispositif de découpe d'emballages alimentaires, système comprenant une lame de coupe et un logement de lame de coupe, procédé de conversion du dispositif et procédé de modification d'une distance de deux lames de coupe

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EP (1) EP4269052A3 (fr)
DE (1) DE102022108015A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2775922B1 (fr) * 1998-03-12 2000-05-05 Komori Chambon Perfectionnement aux dispositifs de decorticage pour flans de cartons decoupes
DE102009011331A1 (de) * 2009-03-05 2010-09-16 H. Schönenberger GmbH Axial geteiltes Ringmesser für eine Längsschneidevorrichtung
DE102012023209A1 (de) 2012-11-28 2013-02-28 Heidelberger Druckmaschinen Ag Rillwerkzeuganordnung in einer bogenverarbeitenden Maschine, insbesondere in einem Umschlaganleger einer Bindereimaschine
JP6039386B2 (ja) 2012-11-29 2016-12-07 京セラ株式会社 切断装置用ユニット、切断装置およびシート加工物の製造方法
EP2743072B1 (fr) * 2012-12-14 2018-09-05 Müller Martini Holding AG Procédé de rainurage
US11548179B2 (en) * 2018-07-02 2023-01-10 Hewlett-Packard Development Company, L.P. Cutter module and method
DE102018128110A1 (de) 2018-11-09 2020-05-14 Weber Maschinenbau Gmbh Breidenbach Längsschneideeinrichtung für eine Verpackungsmaschine und Verfahren zum Einstellen und Betreiben einer solchen Längsschneideeinrichtung
EP3689561B1 (fr) 2019-01-29 2023-09-06 Multigraf AG Dispositif d'usinage d'objets plans

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EP4269052A3 (fr) 2024-01-17
DE102022108015A1 (de) 2023-10-05

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Owner name: WEBER FOOD TECHNOLOGY GMBH