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
  • B26D1/25—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 non-circular cutting member
  • B26D1/34—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 non-circular cutting member moving about an axis parallel to the line of cut
  • B26D1/40—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 non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
  • B26D1/405—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 non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member 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
  • B26D7/2628—Means for adjusting the position of the cutting member
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
  • B65C9/00—Details of labelling machines or apparatus
  • B65C9/08—Label feeding
  • B65C9/18—Label feeding from strips, e.g. from rolls
  • B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
  • B65C9/1815—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means
  • B65C9/1819—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means the suction means being a vacuum drum
• • 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
  • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
  • B65C9/00—Details of labelling machines or apparatus
  • B65C9/08—Label feeding
  • B65C9/18—Label feeding from strips, e.g. from rolls
  • B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
  • B65C2009/1834—Details of cutting means
  • B65C2009/1857—Details of cutting means two co-acting knifes
  • B65C2009/1861—Details of cutting means two co-acting knifes whereby one knife remains stationary

Definitions

• the invention relates to a cutting unit for a labeling unit. Furthermore, the present invention relates to a labeling unit with such a cutting mechanism.
• Cutting units are known, in particular, for labeling bottles or similar containers with so-called roll-fed labels, each of which is produced by peeling and separating a label length from an endless label material.
• the cutting drum and the cutter shaft for the cutting process are driven in synchronous rotation around their axes arranged parallel to one another, in such a way that the cutter shaft and the cutting drum have the same circumferential speed and the same direction of movement at least at the time of the actual cutting process.
• a cutting drum knife Whenever a cutting drum knife has reached the cutting position for a cutting process, ie the cutting gap formed between the cutting drum and the knife shaft, there is also a counter knife of the knife shaft so that the cutting process is carried out with the two knives.
• the knife gap ie the distance that the overlapping knives have from one another during the cutting process, as optimally as possible.
• This setting is made, for example, by adjusting the angle of rotation of the knife shaft, that is to say that when the cutting drum knife is in the cutting position, the rotating position of the knife shaft corresponding to this cutting drum rotating position is changed such that the desired, narrowest possible knife gap changes without the risk of damage to the knife results.
• the rotation angle is adjusted mechanically, for example, via the gear that drives the knife shaft, which is designed for the rotation angle adjustment and has a corresponding rotation angle adjustment arrangement that can be actuated for the rotation angle adjustment.
• Other embodiments of cutting units are also known, for example those with a stationary, ie non-rotating counter knife carrier, eg. B. a knife shaft, which for example carries out a controlled oscillating back and forth movement.
• a labeling device with continuous introduction of a wound label film which has a cutting device with a cutting edge arranged along a surface line of a rotating roller and a non-rotating counter cutting edge.
• a drum is provided for grasping and transferring the separated labels to a hot roller that applies the adhesive to certain areas and then to a container.
• the labeling device comprises a one-piece elastic holder for the non-rotating counter-cutting edge, the mounting of which allows a pivoting movement about a pivot point in order to be able to move the counter-cutting edge away from or towards the cutting edge.
• the present invention is based on the object of providing a cutting unit for a labeling unit, which has the aforementioned avoids parts and in particular enables a very fine adjustment of the knife gap and at the same time can be temporarily disengaged from the cutting knife provided on the cutting drum.
• the essential aspect of the present invention is to provide a cutting mechanism for a labeling unit of a labeling machine which comprises a cutting drum which can be driven around a drum axis and has at least one cutting drum knife provided on a drum circumference.
• the cutting drum knife for cutting a label can be guided past a counter knife provided on a switching and adjusting device.
• the counter knife can be pivoted in a controlled manner between a cutting position and a waiting position via a first articulated section formed on the switching and adjusting device such that the counter knife is in operative engagement with the rotating cutting drum blade and in the waiting position is out of operative engagement.
• the knife gap formed in the cutting position between the cutting drum knife and the counter knife can be set independently of the controlled pivoting movement of the first joint section via a second joint section formed on the switching and adjusting device. It is particularly advantageous for the counter knife to be brought out of operative engagement with the cutting drum knife and for the knife gap to be set. Since two articulated areas are formed on the switching and adjusting device for this purpose, both functionalities can be set independently of one another.
• the switching and adjusting device is designed to pivot the first joint section between the cutting position and the waiting position in such a way that, in the case of individual gaps in the bottle flow of the labeling unit, at least an empty one, not an empty one occupy container treatment position on the rotor no label is cut.
• the switching and adjusting device has a solid body joint, by means of which (solid body joint) the two joint sections are realized.
• the first and the second joint section can therefore be designed with a solid-state joint.
• the solid body joint thus has the first and second joint section in the form of a double solid body joint.
• the solid body joint is thus designed as a double solid body joint with the first and second joint sections. It can therefore be provided that the solid-state joint is designed as a double solid-state joint, in which the first and second joint sections are produced exclusively with the solid-state joint.
• the first and second joint sections can advantageously be formed in one piece, in particular in one piece with the solid-state joint.
• the first and / or second joint section of the solid body joint can be provided as material savings, for example in the form of a material constriction, and / or as a bend on the solid body joint.
• the double solid body joint is thus advantageously designed to be elastically deformable, at least in the areas of its first and second joint section.
• the solid body joint can be provided as an essentially U-shaped or C-shaped solid body joint.
• the solid body joint has a first side leg section, a second side leg section oriented essentially parallel to the first leg section and a base leg section connecting the two side leg sections at a free end.
• the first joint section is formed on the solid body joint in the transition area between the first side leg section and the base leg section and the second joint section in the transition area between the second side leg section and the base leg section, and that the solid body joint is designed to be elastically deformable at least in its respective joint section.
• the solid body joint is formed in one piece, in particular in one piece.
• the switching and actuating device is fixed in position on a housing of the cutting unit via a holder attached to the first side leg section.
• the switching and actuating device has an essentially L-shaped switching lever element which is used to initiate a pivoting movement between the cutting position and the waiting position on the counter knife is connected to a first side on the base leg section and cooperates directly or indirectly with a switching device with a second side in such a way that the switching lever element can be pivoted in a controlled manner about the first articulation region when an actuating movement is initiated via the switching device.
• the shift lever element has a mechanical stop in the region of its free end section on the second side, by means of which the deflection of the shift lever element can be divided between the waiting position and the cutting position.
• the switching and actuating device has a knife holder on its second side leg section of the solid-state joint, on which the counter knife is held in such a way that the counter knife is controlled in a controlled manner
• Swivel movement around the first joint area is directly proportional to the deflection of the switching element lever.
• the relative positioning of the knife holder provided on the second side leg section relative to the shift lever element can be fixed in position by means of a locking plate.
• the knife holder including the counter knife held thereon, for adjusting the knife gap is designed to be pivotable about the second joint section relative to the switching lever element by means of an adjusting device provided on the knife holder.
• the adjusting device can have a threaded spindle with a differential thread, the threaded spindle providing at least one first threaded region and one second threaded region along its shank, both of which have the same thread direction with different to each other, the first thread area of the threaded spindle being received in a counter thread of the knife holder and the second thread area being received in a counter thread of the shift lever element.
• the expression “essentially” or “approximately” means deviations from the respectively exact value by +/- 10%, preferably by +/- 5% and / or deviations in the form of insignificant for the function Changes.
• aspects have been described in connection with a device, it is understood that these aspects also represent a description of the corresponding method, so that a block or a component of a device is also to be understood as a corresponding process step or as a feature of a process step. Analogously, aspects that have been described in connection with or as a method step also represent a description of a corresponding block or detail or feature of a corresponding device.
• Some or all of the method steps can be carried out by a hardware device (or using a Flardware apparatus) such.
• FIG. 1 shows a schematic illustration and a top view of a labeling unit of a labeling machine for labeling containers
• FIG. 1 shows an enlarged detail of the cutting mechanism according to the invention shown in FIG. 1,
• FIG. 3 shows a schematic side view of an exemplary embodiment of a switching and actuating device of a cutting unit
• FIG. 4 shows a schematic top view of the switching and actuating device according to FIG. 3,
• FIG. 5 shows a schematic perspective view of the switching and actuating device according to FIG. 3.
• 1 is a labeling unit of a labeling machine for labeling bottles or similar containers 2 with so-called roll-fed labels 3, which are pulled off a supply roll 4 of an endless, band-shaped label material 3.1 and in a cutting unit 5 of the labeling unit 1 with the respective length required for a label 3 can be cut off from the label material 3.1.
• the labels 3 thus obtained are transferred via a labeling and transfer drum 6 to the containers 2, which are moved past the labeling unit 1 on a rotor 7 of the labeling machine that rotates about a vertical machine axis, and applied to the containers 2.
• the directions of rotation of the rotor 7 and the transfer drum 6 are indicated by arrows A and B, respectively.
• the label material 3 is drawn off from a supply roll 4 by means of conveyor rollers 8 and 9 synchronously with the rotary movement of the rotor 7 and fed to the cutting unit 5.
• the cutting unit 5 comprises in particular a cutting drum 10 which is driven in rotation around its vertical drum axis TA during labeling, namely in the opposite direction to the transfer drum 6 (arrow C).
• Such a cutting drum 10 is basically known to the person skilled in the art in its structure and function. A detailed description is therefore omitted. Reference is made only by way of example in this context to the cutting drum shown and described in the publication DE 20 2005 002 793 U1.
• the cutting drum 10 has, on opposite sides, preferably a cutting drum knife 11, which is oriented with its cutting edge parallel or essentially parallel to the drum axis TA of the cutting drum 10 and to which a counter knife 12 is assigned, so that at one revolution of the cutting drum 10 by the interaction of the cutting drum knife 11 with the counter knife 12, the length forming the label 3 is separated from the label material 3.1 and then temporarily transferred to the transfer drum 6 on the peripheral surface 10.1 of the cutting drum 10, for example by vacuum becomes.
• the cutting unit 5 thus cuts a label 3, in that the rotating cutting drum knife 11 of the cutting drum 10, which is provided on a drum circumference 10.1, is guided past the counter knife 12 provided on a switching and adjusting device 13 and the cut is thus made.
• the counter knife 12 can be pivoted in a controlled manner between a cutting position SP and a waiting position WP via a first articulated section GA1 formed on the switching and adjusting device 13 in such a way that it is in operative engagement with the rotating cutting drum knife 11 in the cutting position SP - that is, label - Ten 3 cuts - while the counter knife 12 in the waiting position WP is out of action with the cutting drum knife 1 1 - thus does not cut any labels 3.
• the knife gap formed in the cutting position SP between the cutting drum knife 11 and the counter knife 12 can be set independently of the controlled pivoting movement of the first joint section GA1 via a second joint section GA2 formed on the switching and adjusting device 13.
• the switching and adjusting device 13 can be designed to pivot the first joint section GA1 between the cutting position SP and the waiting position WP in such a way that, in the case of individual gaps in the bottle flow of the labeling unit 1, at least an empty one does not occupy it Container treatment position on the rotor 7 no label 3 is cut - the counter cutting edge 12 is therefore temporarily out of engagement with the cutting drum knife 11 provided on the cutting drum.
• the cutting unit 5 has a housing 21 on which all components and assemblies are arranged or received.
• the switching and adjusting device 13 is also arranged on the housing 21 via a plate-shaped holder 15, preferably screwed to the housing 21 in a detachable manner.
• all of the components and assemblies of the switching and actuating device 13 which are explained in more detail below are held on the plat-shaped holder 15.
• a switching device 19 is provided on the plate-shaped holder 15 for the controlled pivotable movement of the first joint section GA1 between the cutting position SP and the waiting position WP of the shearbar 12.
• the switching device 19 is preferably designed as a pneumatic cylinder device which can produce an actuating movement, indicated on both sides by a double arrow D.
• the switching and adjusting device 13 can have a solid body joint 14, by means of which (solid body joint 14) the two joint sections GA1 and GA2 are realized.
• the first and the second joint sections GA1, GA2 can thus be designed with a solid-state joint 14.
• the solid body joint 14 therefore has the first and second joint sections GA1, GA2 in the form of a double solid body joint.
• the solid body joint 14 is thus designed as a double solid body joint with the first and second joint sections GA1, GA2. It can therefore be provided that the solid body joint 14 is designed as a double solid body joint, in which the first and second joint sections GA1, GA2 are produced exclusively with the solid body joint 14.
• the first and second joint sections GA1, GA2 can advantageously be formed in one piece, in particular in one piece with the solid body joint 14.
• the first and / or second joint section GA1, GA2 of the solid body joint 14 can be provided as material savings, for example in the form of a material constriction, and / or as a bend on the solid body joint 14.
• the double solid body joint 14 is thus advantageously designed to be elastically deformable, at least in the areas of its first and second joint sections GA1, GA2.
• the solid body joint 14 can be provided as an essentially U-shaped or C-profile-shaped solid body joint 14.
• FIG. 4 shows an embodiment variant in which an essentially U-shaped solid body joint 14 is provided on the holder 15 on the side opposite the switching device 19, on which the first and second joint sections GA1, GA2 are formed.
• the U-shaped solid body joint shows more in detail 14 in this case has a first side leg section 14.1 with which the solid-state joint 14 is arranged on the holder 15, in particular firmly but releasably connected thereto, for example screwed.
• a second side leg section 14.2 oriented substantially parallel to the first side leg section 14.1 is provided, the two side leg sections 14.1, 14.2 being connected to one another via a third base leg section 14.3, preferably perpendicular to the two side leg sections 14.1, 14.2.
• the first joint section GA1 is formed on the solid body joint 14 in the transition area between the first side leg section 14.1 and the base leg section 14.3 and the second joint section GA2 in the transition area between the second side leg section 14.2 and the base leg section 14.3.
• the solid body joint 14 is designed to be elastically deformable, at least in its respective joint section GA1, GA2.
• the solid body joint 14 with its first and second side leg sections 14.1, 14.2 and the base leg section 14.3 connecting the side leg sections 14.1, 14.2 is preferably formed in one piece, in particular in one piece, and is made of a metallic material.
• the switching and adjusting device 13 has a switching lever element 16 which extends in an L-shaped manner in plan view to initiate the pivoting movement between the cutting position SP and the waiting position WP on the counter knife 12.
• the shift lever element 16 is fixed, but detachably, with its first side 16.1 formed on a short leg, in particular connected to the base leg portion 14.3, and acts with its second side 16.2 formed on a longer leg via a receptacle 23 with the Switching device 19 together in such a way that the switching lever element 16 can be pivoted about the first joint section GA1 when an actuating movement is initiated via the switching device 19.
• the double-sided swivel movement is indicated by a double arrow E.
• the shift lever element 16 in the region of its free end section on the second side 16.2 has a mechanical stop 20 by means of which the deflection of the shift lever element 16, that is, the stroke of the pivoting movement, is adjustable between the waiting position WP and the cutting position SP.
• the stop 20 can be formed by a threaded spindle 20.1 screwed into the holder 15, on which a stop element 20.2, 20.3, for example in the form of a nut, is provided on opposite sides of the shift lever element 16.
• the stop element 20.2 provided on the side of the threaded spindle 20.1 facing away from the holder 15 forms a mechanical end stop for the maximum possible deflection of the shift lever element 16, in which the counter knife 13 is in its cutting position SP, that is to say in active engagement with the cutting current - Melmesser 12 for cutting labels 3, while the stop element 20.3 provided on the side of the threaded spindle 20.1 facing the holder forms a mechanical end stop for the waiting position WP, in which the counter knife 13 is out of engagement with the cutting drum knife 12.
• the switching and adjusting device 13 has on its second side leg section 14.2 a knife holder 17 on which the counter knife 12 is held interchangeably, for example running parallel to the drum axis TA.
• the knife has a slight inclination with respect to the drum axis, for example an inclination of 0.15 °.
• the knife holder 17, together with the counter knife 12 held thereon is pivoted directly proportional to the deflection of the switching lever element 16 during a controlled pivoting movement about the first joint axis GA1 between the cutting position SP and the waiting position WP via the solid-state joint 14.
• the knife holder 17 is preferably detachable on the second side leg section 14.2, but fixed, arranged, preferably screwed to the second side leg section 14.2, specifically on the outside of the second side leg section 14.2 opposite the shift lever element 16.
• the relative positioning of the knife holder 17 provided on the second side leg section 14.2 to the shift lever element 16 can be fixed in position by means of a locking plate 22.
• the locking plate 22 can be screwed to the shift lever element 16 as well as the knife holder 17 by means of screws 25.
• the knife gap formed in the cutting position SP between the cutting drum knife 11 and the counter knife 12 can be set independently of the controlled pivoting movement of the first joint section GA1 via the second joint section GA2 formed on the switching and adjusting device 13.
• the knife holder 17, including the counter knife 12 held thereon, for adjusting the knife gap can be designed to be pivotable relative to the switching lever element 16 by means of an adjusting device 18 provided on the knife holder 17 for this purpose.
• the pivoting of the knife holder 17 by means of the adjusting device 18 about the second joint area GA2 formed between the second side leg section 14.2 and the base leg section 14.3 thus takes place independently of the controlled pivoting movement of the first joint section GA1.
• the adjusting device 18 can absorb forces in both directions of the pivoting movement formed around the second joint section GA2.
• the adjusting device 18 can therefore have a threaded spindle 18.1 with a differential thread in more detail.
• the threaded spindle 18.1 has two threaded areas along its shank, namely a first threaded area W1 and a second threaded area W2, both of which comprise the same thread direction, but have a different thread pitch.
• the first thread area W1 of the threaded spindle 18.1 is received in a counter thread 17.1 of the knife holder 17 and the second thread area W2 in a counter thread 16.3 of the shift lever element 16.
• the first thread area W1 can have a larger thread pitch than the second thread area W2 of the threaded spindle 18.1.
• the threaded spindle 18.1 causes the threaded area W1 of the threaded spindle 18.1 to slide with the larger thread pitch in the counter thread 17.1 of the knife holder 17.
• the thread area W2 moves with the smaller pitch in the counter thread 16.3 of the shift lever element 16. Since the threaded spindle 18.1 rotates a shorter distance in the thread area with the smaller pitch W2, the two threads are braced. areas W1, W2 of the threaded spindle 18.1 against one another, that is to say in particular towards one another.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Labeling Devices (AREA)
• Details Of Cutting Devices (AREA)

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Publications (1)

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Citations (5)

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• 2018
  • 2018-11-08 DE DE102018127852.7A patent/DE102018127852A1/de active Pending
• 2019
  • 2019-11-04 JP JP2021524310A patent/JP7482124B2/ja active Active
  • 2019-11-04 EP EP19798599.7A patent/EP3877271B1/de active Active
  • 2019-11-04 CN CN201980081200.5A patent/CN113165765B/zh active Active
  • 2019-11-04 US US17/288,201 patent/US11613037B2/en active Active
  • 2019-11-04 WO PCT/EP2019/080094 patent/WO2020094565A1/de not_active Ceased

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