EP4438254A2 - Dispositif pour la découpe d'emballages - Google Patents

Dispositif pour la découpe d'emballages Download PDF

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Publication number
EP4438254A2
EP4438254A2 EP24163152.2A EP24163152A EP4438254A2 EP 4438254 A2 EP4438254 A2 EP 4438254A2 EP 24163152 A EP24163152 A EP 24163152A EP 4438254 A2 EP4438254 A2 EP 4438254A2
Authority
EP
European Patent Office
Prior art keywords
cutting blade
cutting
pressing
cutting knife
working position
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
EP24163152.2A
Other languages
German (de)
English (en)
Other versions
EP4438254A3 (fr
Inventor
Manuel Wölfle
Markus Weiland
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
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 Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Publication of EP4438254A2 publication Critical patent/EP4438254A2/fr
Publication of EP4438254A3 publication Critical patent/EP4438254A3/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
    • 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
    • B26D7/2628—Means for adjusting the position of the cutting member
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • 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
    • B26D7/22—Safety devices specially adapted for cutting machines
    • 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
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2635—Means for adjusting the position of 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
    • B26D1/01—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
    • 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
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
    • 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
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/06—Cutting webs along their longitudinal direction

Definitions

  • the present invention relates to a device for cutting packages according to independent claim 1 and a method for cutting packages with a device for cutting packages according to claim 12.
  • Devices for cutting packaging are well known from the prior art. These include, on the one hand, transport devices for packaging material and, on the other hand, cutting blade arrangements, in particular a first and a second cutting blade arrangement, which are arranged on opposite sides of the transported packaging material and can cut packaging material conveyed between them by means of the mutually acting pressing force.
  • the technical problem to be solved is therefore to provide a device for cutting packaging and a method for cutting packaging with which changeover can be carried out more easily and reliably.
  • the device according to the invention for cutting packaging comprises a first cutting knife, a second cutting knife which can cooperate with the first cutting knife for cutting packaging, and an adjusting element with which a position of the second cutting knife relative to the first cutting knife and a pressing force acting between the first cutting knife and the second cutting knife can be adjusted, wherein the adjusting element comprises a positioning element with which the position of the second cutting knife can be adjusted between a working position and a change position and wherein the adjusting element comprises a pressing element with which the pressing force in the working position can be adjusted.
  • the working position is understood to be a position in which the second cutting knife can interact with the first cutting knife in such a way that (with a suitably set pressure force) a cut in the packaging is possible.
  • the change position is understood to be a position that is different from the working position of the second cutting knife, in particular is spaced apart from it. The distance can be along a direction perpendicular to a plane in which the second cutting knife can rotate when cutting packaging material. Regardless of the setting of the pressure element, it can be provided that in the change position no pressure force acts between the first cutting knife and the second cutting knife.
  • packaging is understood to mean packaging that has already been formed or packaging material that has not yet been formed into finished packaging, such as one or more film webs.
  • the device according to the invention decouples the adjustment of the pressing force from the adjustment of the position of the second cutting blade, so that the adjustment of the pressing force by the pressing element is retained even when the second cutting blade is repeatedly moved between the working position and the change position. This simplifies changeover work, since the pressing force can be adjusted again even after the second cutting blade from the working position to the change position and back to the working position can be omitted.
  • the device comprises an axis or shaft on which the second cutting blade is rotatably arranged and wherein the positioning element comprises an engagement element that can engage in recesses in the axis or shaft, wherein a first recess in the axis or shaft is assigned to the working position and a second recess in the axis or shaft is assigned to a change position.
  • the positioning element comprises an engagement element that can engage in recesses in the axis or shaft, wherein a first recess in the axis or shaft is assigned to the working position and a second recess in the axis or shaft is assigned to a change position.
  • the positioning element comprises a pre-tensioning element that pre-tensions the engagement element in the direction of one of the recesses.
  • the recess can be the recess that is assigned to the working position and/or the recess that is assigned to the change position. This ensures that when the cutting blade is moved from the working position to the change position or vice versa, the positioning element fixes the cutting blade in this position, since the engagement element cannot inadvertently remain outside the recesses.
  • the positioning element can comprise an actuating element for actuating the engagement element and/or a second pre-tensioning element for pre-tensioning the positioning element into a position corresponding to the working position or the change position. This design ensures that the cutting blade is pre-tensioned into one of the positions (working position or change position), which prevents it from being accidentally moved into the other position.
  • the pressing element comprises an adjusting element with which a position of the second cutting blade can be adjusted relative to the positioning element.
  • the adjusting element can, for example, be an adjusting nut or comprise an adjusting nut that can be rotatably arranged on a thread in order to adjust the position of the second cutting blade relative to the positioning element.
  • the pressing element comprises a guide along which the second cutting blade can be moved by actuating the adjusting element. This embodiment ensures that when the pressing force is adjusted, the second cutting blade is not inadvertently moved into a position that may jam with the first cutting blade, which could lead to impairments during operation.
  • the pressing element and the positioning element can be operated independently of one another. This embodiment ensures that the pressing force can be adjusted independently of the positioning in the working position and the change position, which increases the flexibility when adjusting the pressing force.
  • a distance between the working position and the change position along a direction is greater than a movement amplitude of the second cutting blade along the direction that can be achieved by the pressing element.
  • the movement amplitude is to be understood as the maximum possible change in the position of the second cutting blade with the pressing element, with the extremes of the movement amplitude being arranged along the direction.
  • the adjustment of the pressing force can thus be implemented as a fine adjustment of the position of the cutting blade in the working position following the movement of the second cutting blade into the working position, which ensures a more precise adjustment of the pressing force.
  • the achievable movement amplitude is less than 10% of the distance, or less than 5% of the distance, or less than 3% of the distance.
  • the pressure force is thus adjusted by means of a movement that has a movement amplitude that is at least one order of magnitude smaller than moving the cutting blade from the change position to the working position, so that changing the pressure force has little or no effect on the position of the second cutting blade, particularly in the change position, which can reduce the risk of injury to an operator.
  • the device comprises a movable protective device which prevents engagement with the second cutting blade in a protective position, and a locking element which blocks actuation of the positioning element and/or the pressing element when the movable protective device is not arranged in the protective position. The risk of injury to an operator is thereby minimized.
  • the pressing element can be designed in such a way that a set pressing force is maintained regardless of the actuation of the positioning element.
  • the pressing element implements a locking function that fixes the second cutting blade in the position set by the pressing element to define the pressing force, regardless of whether the cutting blade is in the working position or the change position. The repeatability of the setting of the pressing force for cutting packaging material is thus ensured.
  • a method for cutting packaging with a device for cutting packaging comprising moving the second cutting blade from the change position to the working position by actuating the adjustment element and then adjusting the pressing force by actuating the pressing element.
  • a setting of the pressure element is retained when the positioning element is actuated. This embodiment ensures the repeatability or reproducibility of the set pressure force even after the position of the second cutting blade has been changed.
  • the method further comprises moving a movable protective device into a protective position and then actuating the positioning element and/or the pressing element. This increases operational reliability, particularly when changing a cutting blade.
  • Figure 1 shows a schematic view of a device 110 for cutting packaging.
  • the device can comprise a transport device 104, which can be designed, for example, as a continuous conveyor belt, on which packaging material 130 can be transported.
  • packaging is not only intended to mean completely formed packaging, but rather raw materials, in particular film webs, as shown here by way of example with the film web 130.
  • the cutting knife arrangement 100 comprises, for example, a frame 113 in which at least one or a plurality of first cutting knives 111 and at least one or a plurality of second cutting knives 121 can be arranged so as to be rotatable (for example about a respective first drive shaft or drive axis 101 and a second drive shaft or drive axis 102).
  • At least one second cutting blade 121 is assigned to each first cutting blade 111, which are arranged in such a way that they exert a pressing force on each other.
  • the packaging or the packaging material 130 are transported along between the first cutting blade 111 and the second cutting blade 121, so that the pressing force acting between the cutting blades and the transport of the packaging material 130 causes the packaging material to be cut by the first cutting blade and the second cutting blade in cooperation. This creates one or more separate webs of packaging material or packaging 131 to 134.
  • the device 110 can further comprise a control unit 180 or one can be assigned to it.
  • the control unit can be designed to control or regulate functions of the device and can in particular be designed as a computer or processor unit with associated memory.
  • FIG 2 shows a more detailed schematic view of the cutting blade assembly 200 as shown in Figure 1 was depicted.
  • the cutting blade arrangement 200 comprises a frame 202 which can extend above the transport plane of the packaging material and can be connected, for example, to a frame of the device 110.
  • One or more second cutting blades 221, 224 and 225 may be arranged in the frame 202 to cooperate with corresponding first cutting blades 211, 213 and 214 to cut packaging material.
  • the first cutting blades 211, 213 and 214 are rotatably mounted on a shaft or axis 212.
  • the axis runs through the center of the first cutting blades 211, 213 and 214.
  • the cutting blades are only rotatably mounted on an otherwise fixed axis and are set in rotation via a separate drive shaft, for example by means of one or more gears or toothed wheels.
  • the cutting blades 221, 224 and 225 associated with the respective first cutting blades 211, 213 and 214 are also arranged to rotate. Analogous to the first cutting blades, this can be done either by a rotatable bearing on a shaft or axle (not shown here) or by a rotatable bearing, for example in a cutting blade suspension 250 and connection of the respective second cutting blades 221, 224 and 225 to a drive shaft via suitable gear elements 223 in order to set the respective second cutting blades in rotation.
  • the cutting blade suspensions 250 can be fixed to the frame 220, for example to an upper part 226. It is also conceivable that the respective cutting blade suspensions 250 are detachably connected to the frame 202 via connecting elements 227. However, this is not mandatory.
  • the respective second cutting blades 221, 224 and 225 can preferably be arranged rotatably in the cutting blade suspensions 250, so that the cutting blade suspensions 250 serve as a frame or support for the second cutting blades.
  • an arrangement of the second cutting blades in corresponding cutting blade suspensions 250 is not mandatory and the cutting blades can also be arranged without a corresponding cutting blade holder, for example on a suitable shaft or axis in order to be set in rotation.
  • the invention is not limited in this respect.
  • first cutting knife and second cutting knife is generally used here in accordance with its usual meaning, it is not absolutely necessary that the first cutting knife and the second cutting knife are designed with a cutting edge for cutting through packaging or packaging material. It can also be provided that the first cutting knife or the associated second cutting knife does not comprise a cutting edge and serves only as a counter-pressure element for the associated first or second cutting knife, which comprises a cutting edge and realizes a cutting of packaging by means of a suitable pressing force between the first cutting knife and the second cutting knife.
  • a first cutting blade 211 is shown in relation to an associated second cutting blade 221, the second cutting blade 221 being shown schematically in the associated cutting blade suspension 250.
  • the second cutting blade 221 is mounted so as to be rotatable about a drive shaft or drive axis 222, which can in particular run through the center of the second cutting blade 221.
  • the arrangement of the second cutting blade 221 as being rotatable about the drive axis or drive shaft 222 is not mandatory.
  • the second cutting blade 221 is mounted so as to be rotatable about a general shaft or axis that does not transmit any drive force to the cutting blade 221 itself, and the respective drive shaft or drive axis can run parallel to this shaft or axis and, for example, transmit the drive force to the second cutting blade 221 via suitable gears.
  • first cutting blade 211 and the second cutting blade 221 are suitably positioned relative to one another, a pressing force 390, shown schematically here, acts between them.
  • a pressing force 390 acts between them.
  • the first cutting blade 211 and the second cutting blade 221 may touch one another and/or a pressing force acts on the touching surfaces and/or the packaging material transported between them. This pressing force can be used to cut packaging material.
  • an adjusting element 360 is provided according to the invention, which is designed such that it can adjust a position of the second cutting blade relative to the first cutting blade 211 between a working position in which the second cutting blade 221 is as in Figure 3 shown and/or can exert a pressing force on the first cutting blade, and can change a change position spaced from the working position, wherein in the change position no pressing force acts between the first cutting blade 211 and the second cutting blade 221 and in particular the second cutting blade 221 can be spaced from the first cutting blade 211.
  • the adjusting element is designed to enable an adjustment of the pressing force between the first cutting blade 211 and the second cutting blade 221 in the working position of the second cutting blade 221.
  • the adjustment element 360 comprises a positioning element 361.
  • the positioning element is shown as comprising, by way of example, an engagement element 368 (for example in the form of a bolt or a screw) and recesses (hereinafter also referred to as receptacles) 363 and 364 arranged in the shaft or axis 222.
  • an engagement element 368 for example in the form of a bolt or a screw
  • recesses hereinafter also referred to as receptacles
  • the engagement element 368 can engage in each of the receptacles 363 and 364.
  • the receptacle 363 corresponds to a position of the cutting blade 221 in the working position and the recess 364 spaced apart from it corresponds to a change position in which the second cutting blade 221 can be spaced apart from the first cutting blade 211, but in particular no pressing force acts between the first cutting blade and the second cutting blade.
  • the positioning element is designed, for example, as a sleeve 369 which can be connected to the engagement element or in which the engagement element can be arranged.
  • the sleeve can essentially carry the second cutting blade 221 and by moving the sleeve after releasing the engagement element 368, the second cutting blade 221 can be moved between the working position and the change position. If the engagement element 368 is returned to the corresponding recess 363 or 364, the second cutting blade is locked in the working position or in the change position.
  • the invention provides that the adjusting element 360 further comprises a pressing element 362, which is designed to adjust the pressing force of the second cutting blade 221 on the first cutting blade 211 in the working position.
  • the pressing element can effect an adjustment of the position 221 relative to the setting element 360 and in particular relative to the positioning element 361, wherein the adjustment of the position of the second cutting blade 221 with the pressing element 362 can preferably be realized independently of the change in the position of the second cutting blade 221 between the working position and the change position.
  • the pressing element 362 comprises an adjusting screw or adjusting nut 365, which can cause the second cutting blade 221 to move relative to the positioning element 361 (in particular relative to the sleeve 369).
  • the second cutting blade 221 is arranged in a guide or on a guide 367, which can be provided, for example, as part of the sleeve 369 and can comprise one or more guide elements that run parallel to a longitudinal direction of the shaft or axis 222 and can be arranged, for example, equidistant from one another along the circumferential direction of the shaft 222.
  • two or three such guide elements can be provided.
  • the second cutting blade is not firmly connected to the adjustment element and in particular to the guide, but can be connected to the engagement element, for example via a holder in which the second cutting blade is rotatably mounted.
  • the adjusting nut or adjusting screw 365 can be mounted so as to be rotatable against a pivot bearing 381, so that turning the adjusting screw 365 results in a change in the position of the second cutting blade 221 relative to the positioning element 361. This makes it possible to effect a fine adjustment of the distance between the first cutting blade 211 and the second cutting blade 221 in the working position of the second cutting blade 221, which is independent of the setting of the position of the second cutting blade in the working position or the change position by means of the positioning element 361.
  • the pressure force can be set reproducibly (i.e., in particular, independently of a renewed adjustment of the second cutting blade between the working position and the change position with the positioning element), which is then also maintained when the second cutting blade 221 is changed between the working position and the change position.
  • the pressure element comprises a counter-pressure element 366 (e.g. in the form of a spring) in addition to the adjusting nut or the general adjusting element 365.
  • the counter-pressure element 366 can be designed in such a way that it builds up a maximum permissible pressure force as counter-pressure and prevents any movement of the second cutting blade 221 beyond this, for example in the direction of the first cutting blade 211 or in the direction of the counter-pressure element.
  • a plurality of pressing elements 362 and 372 are arranged, in particular equidistantly, along the circumference of the cutting blade or the shaft or axis 222. This allows a fine adjustment of the position of the second cutting blade 221 relative to the first cutting blade 211 also along the circumferential direction of the first cutting blade 221 relative to the adjusting element 360 and in particular relative to the positioning element 361, which can improve the accuracy of the pressing force.
  • Figure 4 shows another embodiment of the positioning element 361 of the adjustment element.
  • the engagement element 368 was generally designed as a bolt. This can also be seen in the Figure 4 be provided.
  • the bolt 368 is arranged in a guide 481 or receptacle 481 of the positioning element (which can be part of the sleeve 369, for example).
  • an actuating element 365 can be provided, which is arranged to be movable here along the double arrow direction shown in order to cause the engagement element 368 to move in the direction of the recess 363 or the recess 364 (depending on the positioning of the positioning element).
  • the actuating element can be designed, for example, as a handle or push button and can be arranged in particular at a distance from the positioning element 368. This can increase the distance between the operator and the adjustment element and thus also to the second cutting blade 221, which can minimize the risk of injury.
  • the positioning element comprises a pre-tensioning element 482 that pre-tensions the engagement element 368 in the direction of the recess 363 or 364 such that, when the engagement element 368 is positioned in the region of the respective recess 363 or 364, the pre-tensioning element 362 moves the engagement element 368 into the recesses 363 or 364 without the need for any operation by the operator.
  • This a reliable fixing of the positioning element and thus of the second cutting blade 221 is realized either in the working position or the change position.
  • the actuating element and the pre-tensioning element 482 together realize a bayonet lock, so that when the engagement element 368 is actuated via the actuating element 385 while the engagement element 368 is pre-tensioned in the recess 363 or 364 by the pre-tensioning element 482, the pre-tension is released and the engagement element 368 is moved into a release position in which it no longer engages in the recess 363.
  • the actuating element 384 is actuated again, the pre-tensioning effect of the pre-tensioning element 482 can then be released again, so that the engagement element 368 is pre-tensioned into the respective recess 363 or 364.
  • the positioning element can comprise a second pre-tensioning element 483, which can be connected, for example, to a fixed part (such as the frame 202) 484 of the device for cutting packaging and pre-tensions the positioning element 361 in a position corresponding to the change position or the working position of the second cutting blade 221 such that in particular the engagement element 368 is arranged or pre-tensioned in the region of the recess 363 or 364 belonging to this position.
  • a second pre-tensioning element 483 can be connected, for example, to a fixed part (such as the frame 202) 484 of the device for cutting packaging and pre-tensions the positioning element 361 in a position corresponding to the change position or the working position of the second cutting blade 221 such that in particular the engagement element 368 is arranged or pre-tensioned in the region of the recess 363 or 364 belonging to this position.
  • the pre-tensioning elements described so far can be designed in particular as springs or comprise springs that are connected on one side to a movable part of the positioning element and on the other side are preferably connected to a fixed part of the device.
  • the pre-tensioning elements can also be designed as magnets with poles of the same name (e.g. two north poles or two south poles) lying opposite one another, so that their repulsive force can cause the positioning element or the engagement element to be pre-tensioned.
  • Other embodiments, such as using flexible elements made of metal foil or the like, are also conceivable here.
  • FIG. 5 shows a further embodiment of the adjustment element 360. This essentially corresponds to the Figure 3 shown embodiment, but can also be used with any of the Figure 4 described embodiments can be combined.
  • the second cutting blade 221 is also assigned a movable protective device 591. This can be designed such that it is designed to cover at least a part of the second cutting blade 221.
  • a movable protective device 591 This can be designed such that it is designed to cover at least a part of the second cutting blade 221.
  • the movable protective device 591 can cover the part of the second cutting blade which does not come into contact with the first cutting blade 211 in the working position.
  • the movable protective device covers the part of the second cutting blade 221 which lies on a side of the rotation axis R of the second cutting blade 221 which is opposite the packaging 130 to be cut.
  • the movable protective device can be designed such that it completely covers the second cutting blade 221 above a rotation axis of the second cutting blade 221.
  • the movable protective device 591 merely surrounds the second cutting blade 221 without physical contact being made with the second cutting blade 221. Nevertheless, the relative arrangement of the movable protective device 591 in a protective position can be designed such that an operator's intervention in the movable protective device and in particular in any cutting edge of the second cutting blade 221 is prevented. Alternatively or additionally, it can also be provided that the movable protective device 591 fixes the second cutting blade 221 against rotation, so that even if an operator inadvertently intervenes in the second cutting blade 221, at least the risk of injury associated with a rotation of the second cutting blade 221 is prevented. For this purpose, the movable protective device can come into physical contact with the second cutting blade 221 when the movable protective device is brought into a protective position so that an operator's intervention in the second cutting blade 221 is prevented.
  • the device can further comprise a locking element 592.
  • the locking element can be designed such that it blocks or prevents movement of the second cutting blade 221 by means of the positioning element 361 from the working position to the change position and/or vice versa, while the movable protective device 591 is not arranged in the protective position in which the movable protective device at least partially shields the second cutting blade 221 from the intervention of an operator.
  • the locking element does not enable movement of the engagement element 368 out of the recess 363, which in the embodiment shown here is assigned to the working position of the second cutting blade 221, as long as the movable protective device is not arranged in the protective position (as shown here).
  • the locking element 392 can also prevent adjustment of the pressing force by blocking or locking the pressing element 362, so that an operator can, for example, The adjusting element or the adjusting nut of the pressure element cannot be operated, which can also minimize the risk of injury.
  • the locking element can block the movement of the positioning element and/or the pressing element or components thereof and is not limited to limiting the possible movement of the engaging element or the adjusting nut.
  • a movement of the sleeve 369 of the adjusting element 360 can be prevented by the locking element if the movable protective device is not arranged in the protective position.
  • the positioning element 361 and the pressing element 362 have been generally described for adjusting a position of the second cutting blade 221 between a working position and a change position and for adjusting the pressing force in the working position.
  • the maximum amplitude of movement of the second cutting knife that can be achieved with the pressing element is significantly smaller than the movement of the second cutting knife by means of the positioning element between the working position and the change position.
  • the distance between the cutting knife in the working position and the cutting knife in the change position is 5 mm or 1 cm.
  • the maximum change in the position of the second cutting blade in the working position by means of the pressure element can in this case or independently thereof be less than 0.5 mm or less than 0.15 mm or less than 0.1 mm.
  • the maximum possible movement amplitude that can be achieved with the pressure element is less than 10%, in particular less than 5% or less than 3% of the distance of the cutting blade between the working position and the change position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Details Of Cutting Devices (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP24163152.2A 2023-03-28 2024-03-13 Dispositif pour la découpe d'emballages Pending EP4438254A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023107744.9A DE102023107744B3 (de) 2023-03-28 2023-03-28 Vorrichtung zum Zuschneiden von Verpackungen

Publications (2)

Publication Number Publication Date
EP4438254A2 true EP4438254A2 (fr) 2024-10-02
EP4438254A3 EP4438254A3 (fr) 2024-10-16

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EP24163152.2A Pending EP4438254A3 (fr) 2023-03-28 2024-03-13 Dispositif pour la découpe d'emballages

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EP (1) EP4438254A3 (fr)
CN (1) CN222511875U (fr)
DE (1) DE102023107744B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119348950A (zh) * 2024-12-24 2025-01-24 福建好乡亲食品有限公司 一种肠类包装用自动微调分切装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012200852A1 (de) 2012-01-20 2013-07-25 Voith Patent Gmbh Messeranordnung für eine Längsschneidemaschine und Längsschneidemaschine sowie Verfahren zum Längsschneiden von Teilbahnen aus einer laufenden Materialbahn
DE102021120316A1 (de) 2021-05-04 2022-11-10 Weber Maschinenbau Gmbh Breidenbach Verpackungsmaschine mit einer Vorrichtung zum Zuschneiden von Lebensmittelverpackungen entlang einer Längsrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119348950A (zh) * 2024-12-24 2025-01-24 福建好乡亲食品有限公司 一种肠类包装用自动微调分切装置

Also Published As

Publication number Publication date
CN222511875U (zh) 2025-02-21
EP4438254A3 (fr) 2024-10-16
DE102023107744B3 (de) 2024-07-25

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