WO2024251672A1 - Dispositif et procédé de marquage au laser de contenants - Google Patents

Dispositif et procédé de marquage au laser de contenants Download PDF

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Publication number
WO2024251672A1
WO2024251672A1 PCT/EP2024/065218 EP2024065218W WO2024251672A1 WO 2024251672 A1 WO2024251672 A1 WO 2024251672A1 EP 2024065218 W EP2024065218 W EP 2024065218W WO 2024251672 A1 WO2024251672 A1 WO 2024251672A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
container
laser marking
marking
containers
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.)
Ceased
Application number
PCT/EP2024/065218
Other languages
German (de)
English (en)
Inventor
Andreas Kraus
Josef Mayer
Florian Lauterbach
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.)
Krones AG
Original Assignee
Krones AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krones AG filed Critical Krones AG
Priority to EP24730985.9A priority Critical patent/EP4719775A1/fr
Priority to CN202480037293.2A priority patent/CN121240972A/zh
Publication of WO2024251672A1 publication Critical patent/WO2024251672A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/44—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements
    • B41J2/442—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements using lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/362—Laser etching

Definitions

  • the invention relates to a device for laser marking containers.
  • the invention also relates to a method for laser marking containers.
  • containers are mostly equipped with labels.
  • Typical variants are paper or plastic labels, which are processed with hot or cold glue or self-adhesive and applied to the containers. Labels can be problematic in the recycling process, e.g. because of the printing ink used, waterproof paper, glue, etc.
  • Required information could, for example, be marked or written directly onto the containers using a laser marking system.
  • a laser marking system Such technology is already used, for example, to laser mark a production number or a best-before date.
  • the laser beam and the heat generated on the surface of the container can cause a physical change to the surface of the container (e.g. stress whitening in PET containers), so that the desired characters can be laser marked onto the surface.
  • the invention is based on the object of creating an improved technology with which large-format laser markings and/or laser markings containing many characters can be laser-marked on containers without negatively affecting the system performance.
  • the technology should enable containers to be equipped completely without labels by laser marking in a container treatment system.
  • the device has a container conveyor for transporting (e.g. linearly or on a circular path) the containers (e.g. in a transport direction) and a laser marking system which is designed for laser marking within at least one marking field (e.g. defined or spanned by one marking head of the laser marking system per marking field).
  • the laser marking system can be moved (e.g. linearly or on a circular path) for moving the at least one marking field (e.g. in the transport direction) with the containers transported by the container conveyor, preferably essentially synchronously (e.g. moving one marking field per container).
  • the device can advantageously significantly extend the process time available for laser marking the containers. Because the marking field(s) can move with the containers, more process time is available for laser marking. This means that large-format laser markings and/or laser markings containing many characters can also be applied to the containers without having to reduce the system output or use particularly complex and therefore costly laser marking technology. Ultimately, this makes it possible to produce containers that are completely label-free and are simply laser-marked.
  • the device may be free of a labeling device for labeling the containers.
  • laser marking can be done directly on the labelless containers.
  • the laser marking system can be configured to apply a laser marking comprising a decoration, a decorative surface, at least one character and/or a single- or multi-line character string to a container within the at least one marking field.
  • the laser marking system is designed for laser marking within several marking fields.
  • the laser marking system preferably li- near or on a circular path, for moving, preferably essentially synchronously, one marking field with each container transported by the container conveyor.
  • a particularly large number of containers can be laser marked in this way within a short period of time, so that, for example, the high system outputs of industrial container processing systems can also be achieved. If a marking head fails, the device can continue to operate with reduced power, if necessary, until the next possible or next favorable time for repair or replacement.
  • the laser marking system has one or more laser sources that can be moved, preferably linearly or on a circular path, for the (e.g. essentially synchronous) movement of the at least one marking field with the containers transported by the container conveyor (e.g. one marking field with one container transported by the container conveyor).
  • the multiple laser sources can share a cooling device and/or a power supply device.
  • the functionality of moving the laser marking system can thus be implemented in a simple manner.
  • the laser marking system has one or more marking heads (e.g. each with one or two scanner mirrors), which can be moved, preferably linearly or on a circular path, for moving the at least one marking field along with the containers transported by the container conveyor (e.g. preferably essentially synchronously) (e.g. one marking field each with one container transported by the container conveyor).
  • the multiple marking heads can share a laser source, a cooling device and/or a power supply device.
  • the functionality of moving the laser marking system along can be easily implemented in this way.
  • the laser marking system has one or more focusing lenses which are movable, preferably linearly or on a circular path, for moving the at least one marking field along with the containers transported by the container conveyor.
  • At least one focusing field in which the at least one marking field is located can be moved along with the containers transported by the container conveyor.
  • the container conveyor and the laser marking system are coupled or can be coupled, preferably mechanically (e.g. via a machine carousel or a driver or a rigid mechanical connection) and/or electronically (e.g. via a control device), for moving the laser marking system (e.g. linearly or on a circular path) with the containers transported by the container conveyor for moving the at least one marking field along with the containers transported by the container conveyor (e.g. essentially synchronously).
  • This can advantageously ensure that the laser marking system and its marking field(s) move at a speed adapted to the container conveyor, e.g. at a speed equal to or less than a transport speed of the container conveyor.
  • a separate drive of the laser marking system which is designed to move the laser marking system along with the containers transported by the container conveyor, can be electronically coupled to a drive of the container conveyor, e.g. directly or via a control device.
  • a drive of the container conveyor can drive the laser marking system to move along.
  • the container conveyor is a rotary container conveyor.
  • the laser marking system can rotate along with the containers transported by the rotary container conveyor.
  • the laser marking system can be connected to a machine carousel of the rotary container conveyor so that it can rotate with the machine carousel.
  • the entire time of a carousel run can thus be available for laser marking.
  • the laser marking system is arranged inside the rotary container conveyor. This advantageously allows the device to have a small footprint.
  • At least one laser source of the laser marking system is arranged inside the rotary container conveyor.
  • at least one marking head and/or at least one deflection mirror of the laser marking system can be arranged outside the rotary container conveyor. This can advantageously enable good accessibility to the at least one marking head, which can facilitate assembly and maintenance, for example.
  • the container conveyor is a linear container conveyor.
  • the laser marking system e.g. at least one marking head and optionally at least one laser source of the laser marking system
  • the container conveyor is designed to rotate the transported containers around their own vertical axis, e.g. during laser marking or while the laser marking system/the at least one marking field moves along with them.
  • the containers can advantageously be rotated during laser marking in order to enable laser marking at any position on the peripheral surface of the containers and even laser marking around a substantially entire peripheral surface of the containers.
  • the container conveyor has several container holders for holding one container each, preferably in base handling or neck handling.
  • the several container holders can each have a container plate (e.g. container turntable), a centering bell, a (e.g. active or passive) container clamp and/or an inflation device.
  • the several container holders can each be rotatable about their own vertical axis for rotating a container held in each case. The containers can thus advantageously be rotated during laser marking using the container holders in order to preferably achieve the advantages already explained above.
  • Areas of a container can be laser marked simultaneously.
  • the device can then also be used If a marking head or laser source fails, it will continue to operate at reduced power until the next possible or convenient time for repair or replacement.
  • marking heads can share a cooling device, a control device and/or a power supply device.
  • laser sources or all laser sources can share a cooling device, a control device and/or a power supply device.
  • the device further comprises a control device which is configured to operate the device in such a way that the laser marking system moves (e.g. substantially synchronously) with the containers transported by the container conveyor, preferably linearly or on a circular path, for the purpose of moving the at least one marking field along with them and thereby laser-marking within the at least one marking field; and optionally the containers transported by the container conveyor are rotated by the container conveyor at least temporarily about their own vertical axis during laser marking.
  • the laser marking system moves (e.g. substantially synchronously) with the containers transported by the container conveyor, preferably linearly or on a circular path, for the purpose of moving the at least one marking field along with them and thereby laser-marking within the at least one marking field; and optionally the containers transported by the container conveyor are rotated by the container conveyor at least temporarily about their own vertical axis during laser marking.
  • control device can refer to electronics (e.g. designed as a driver circuit or with microprocessor(s) and data storage) and/or a mechanical, pneumatic and/or hydraulic control system, which, depending on its design, can take on control tasks and/or regulation tasks and/or processing tasks. Even if the term “control” is used here, it can also expediently include or mean “regulation” or “control with feedback” and/or “processing”.
  • a further aspect of the present disclosure relates to a container treatment plant for producing, cleaning, coating, testing, filling, closing, laser marking and/or packaging containers for liquid media, preferably beverages or liquid foodstuffs.
  • the container treatment plant can comprise the device as disclosed herein.
  • the container treatment plant may be free of any labeling device for labeling the containers.
  • the device and/or the container treatment system has a labeling device for labeling and/or a printing device for directly printing the containers.
  • the containers can be designed as bottles, cans, canisters, cartons, flacons, etc.
  • a further aspect of the present disclosure relates to a method for operating a device, preferably as disclosed herein, for laser marking containers, preferably completely label-free containers.
  • the method comprises moving the containers by means of a (e.g. linear or rotary) container conveyor (e.g. in a transport direction).
  • the method further comprises moving at least one marking field of a laser marking system (e.g. in the transport direction) with at least one of the moved containers, preferably essentially synchronously with the respective container (e.g. moving one marking field with one container each), by moving the laser marking system, preferably linearly or on a circular path.
  • the method further comprises laser marking the at least one moving container (e.g. directly onto the container) with which the at least one marking field moves, by means of the laser marking system during the movement.
  • the method further comprises rotating the at least one moving container, with which the at least one marking field moves, by means of the container conveyor about its own vertical axis of the respective container during laser marking and/or during the movement.
  • the containers are moved linearly by means of the container conveyor during laser marking, and/or the laser marking system is moved linearly during laser marking, e.g. parallel to the container conveyor and/or the transport direction.
  • the containers can be moved on a (e.g. first) circular path during laser marking, for example by means of the container conveyor, and/or the laser marking system can be moved on a (e.g. second) circular path during laser marking.
  • the first circular path and the second circular path can preferably be concentric with each other.
  • Figure 1 is a schematic representation of an exemplary laser marking system
  • Figure 2 is a perspective view of an exemplary laser marking process
  • Figure 3 is a schematic plan view of an exemplary laser marking device
  • Figure 4 is a schematic plan view of an exemplary laser marking device
  • Figure 5 is a schematic plan view of an exemplary laser marking device
  • Figure 6 is a schematic plan view of an exemplary laser marking device
  • Figure 7 is a schematic plan view of an exemplary laser marking device
  • Figure 8 is a schematic sectional view of an exemplary device for laser marking.
  • Figure 9 is a schematic plan view of an exemplary laser marking device.
  • Figure 1 shows a laser marking system 10 for laser marking containers 12.
  • the laser marking system 10 can also be referred to as a laser decoration system, laser marking system, laser coding system or laser labeling system.
  • the laser marking system can
  • the laser marking system 10 may be a CO2 laser marking system, a fiber laser marking system or a UV laser marking system.
  • the laser marking system 10 may be a laser pulse marking system.
  • the laser marking system 10 may comprise a laser source 14 and a marking head 16.
  • the laser source 14 can be designed as a laser tube, for example.
  • the laser tube can be sealed.
  • the laser tube can be filled with a gas, e.g. containing CO2, or a gas mixture, e.g. CO2-N2-He gas mixture.
  • Electrodes can also be arranged in the laser tube.
  • a power supply device 15 can be connected to the electrodes.
  • the power supply device 15 can supply the laser source 14 with electrical energy.
  • a high-frequency voltage for example, molecules, e.g. CO2 molecules, in the laser tube can be excited to oscillate and thus to emit a laser beam.
  • the laser source 14 can also be referred to as an oscillator.
  • the laser beam generated by the laser source 14 is guided or directed to the marking head 16 directly or via mirrors. It is possible that, for example, a so-called telescope for expanding the laser beam is arranged between the laser source 14 and the marking head 16.
  • the marking head 16 can preferably have two movable mirrors 18 and 22 and two drives 20 and 24.
  • the marking head 16 can also have a focusing lens 26.
  • the marking head 16 can also be referred to as a coding head, identification head or writing head.
  • the first drive 20 can rotate the first mirror 18 about a first axis (e.g. x-axis).
  • the first mirror 18 can also be referred to as a movable scanner mirror, e.g. X-scanner mirror.
  • the second drive 24 can rotate the second mirror 22 about a second axis (e.g. y-axis).
  • the second mirror 22 can also be referred to as a movable scanner mirror, e.g. Y-scanner mirror.
  • the first axis and the second axis can preferably run perpendicular to one another.
  • the mirrors 18, 22 moved by the drives 20, 24 can direct the laser beam according to the desired laser marking.
  • the laser beam can thus move, for example, in a writing manner over the surface of the container 12.
  • the laser beam can move over the surface of the container 12 within the marking field 32 (see Figure 2), which is assigned to the respective marking head 16.
  • the drives 20, 24 can be supplied with electrical energy from the energy supply device 15.
  • the focusing lens 26 can also be referred to as a condenser lens.
  • the focusing lens 26 can be an F-theta lens, for example.
  • the focusing lens 26 can be arranged inside or outside the marking head 16.
  • the focusing lens 26 can be a so-called active focusing lens or a so-called passive focusing lens.
  • the laser marking system 10 can have a plurality of marking heads 16.
  • the plurality of marking heads 16 can, for example, be arranged side by side and/or one above the other. For example, two, three or more marking heads 16 can be included.
  • Each marking head 16 can be connected to its own laser source 14, which can emit a laser beam to the respective marking head 16. Accordingly, the laser marking system 10 can have multiple laser sources 14.
  • a beam distributor can be arranged between the laser source 14 and several marking heads 16.
  • the beam distributor can, for example, split a laser beam received from the laser source 14 into several laser beams and guide them to the several marking heads 16.
  • the beam distributor can have a partially transparent deflection mirror, a beam splitter plate, a beam splitter cube, a variable beam splitter or a diffractive beam splitter.
  • laser sources 14 can be of identical construction, for example. However, it is also possible for the laser sources 14 to be at least partially designed differently in order to be able to produce different effects (e.g. color effects) when laser marking the containers 12.
  • the laser marking system 10 can have a cooling device 27.
  • the cooling device 27 can be designed, for example, to cool the laser source(s) 14 and/or the marking head(s) 16.
  • a cooling device 27 is included, with which several or all laser sources 14 and/or several or all marking heads 16 can be cooled together.
  • the cooling device 27 can be, for example, an electrical cooling device or a fluid cooling device (e.g. Air or liquid cooling device).
  • the cooling device TI has at least one cooling circuit in which a cooling fluid circulates.
  • Figure 2 shows a purely schematic and exemplary device 28 for laser marking.
  • the part of the device 28 shown has a marking head 16.
  • the laser marking system 10 can also have several marking heads 16, etc.
  • the part of the device 28 shown also has a container conveyor 34.
  • the arrangement and design of the focusing lens 26 can specify a so-called focusing field or lens field 30.
  • the lens field 30 can be two-dimensional.
  • the lens field 30 can have a circular shape.
  • the lens field 30 can preferably lie in a vertical plane.
  • the laser marking system 10 is designed for laser marking within at least one so-called marking field 32.
  • the marking field 32 can be a section of the lens field 30.
  • the section or the marking field 32 can include all positions that the laser beam can reach through the movable mirror(s) of the marking head 16.
  • the laser marking system 10 can laser mark the area.
  • the laser marking system 10 can no longer laser mark the area.
  • a shape and a dimension of the marking field 32 depend on the mirrors 18, 22 and their mobility caused by the drives 20, 24 (see Figure 1).
  • the marking field 32 can be two-dimensional.
  • the marking field 32 can have a rectangular shape, preferably a square shape.
  • the marking field 32 can preferably lie in a vertical plane.
  • Each marking head 16 can form or define its own marking field 32 within the respective lens field 30.
  • Multiple marking fields 32 can be at least partially spaced apart from one another and/or at least partially adjacent to one another or overlap one another.
  • the container conveyor 34 is designed to transport containers 12.
  • the container conveyor 34 can transport the containers 12 in one transport direction. Depending on the configuration of the container conveyor of which 34 can transport the containers on a desired transport path.
  • the transport path can be, for example, a linear transport path or a curved or arched one.
  • the container conveyor 34 can be a rotary container conveyor (container conveyor carousel).
  • the laser marking system 10 can, for example, be arranged inside or outside the rotary container conveyor. It is also possible for the laser marking system 10 to be arranged partially inside and partially outside the rotary container conveyor.
  • the at least one laser source 14 can be arranged inside the rotary container conveyor and the at least one marking head 16 can be arranged outside the rotary container conveyor.
  • the container conveyor 34 can be a linear container conveyor, for example.
  • the laser marking system 10 can be arranged to the side of the linear container conveyor, for example.
  • the linear container conveyor can have, for example, a preferably rotating conveyor element for transporting the containers 12.
  • the linear container conveyor can be, for example, a belt, strap, chain or plate conveyor. It is also possible for the linear container conveyor to be designed as a long stator linear motor container conveyor or (magnetic) planar motor drive container conveyor, which can move the containers 12 independently of one another by means of movement devices (mover, shuttle).
  • the container conveyor 34 can support the containers 12 during transport, preferably on the bottom side, the circumference side and/or the mouth side.
  • the container conveyor 34 can have container holders 36 (only indicated schematically in Figure 2) for supporting the containers 12.
  • the container holders 36 can hold the containers 12 preferably in base handling or neck handling.
  • the container conveyor 34 does not have any separate container holders 36 and, for example, the containers 12 are simply supported on a preferably rotating conveyor element (e.g. belt, strap, chains or plates) of the container conveyor 34.
  • a preferably rotating conveyor element e.g. belt, strap, chains or plates
  • the container holders 36 can each support a container 12.
  • the container holders 36 can each have, for example, a container plate, a centering bell, a container clamp and/or an inflation device.
  • a container 12 can be fixed between a container plate and a centering bell.
  • An optional, additional inflation device can provide additional stability, e.g. if the containers 12 are laser marked before filling.
  • the container conveyor 34 can be designed to rotate the transported containers 12 each about its own vertical axis H.
  • the container holders 36 can be rotatable for rotating the containers 12 about their respective vertical axis H.
  • the laser marking system 10 can have one marking head 16 and one laser source 14 for each container holder 36.
  • the laser marking system 10 can, for example, have one marking head 16 for each container holder 36, and several of the marking heads 16 can share a laser source 14 of the laser marking system 10.
  • a special feature of the present disclosure is that the at least one marking field 30 is not stationary.
  • the at least one marking field 32 of the laser marking system 10 can move with the containers 12 moving in the transport direction during transport by means of the container conveyor 34, preferably essentially synchronously.
  • the containers 12 and thus the at least one marking field 32 can move, for example, linearly or on a circular path.
  • the containers 12 moving in the transport direction are laser marked with a desired laser marking by means of the laser marking system 10 while they are moving.
  • the containers 12 can also rotate about their own vertical axis H during the movement and/or the laser marking.
  • the laser marking system 10 is movable (in part or in full) to move (at least) one marking field 32 with each container 12 transported by the container conveyor 34 in a transport direction.
  • the movement preferably takes place essentially synchronously with the transported containers 12. This is illustrated schematically in Figure 2 with the arrows A and B.
  • the at least one marking field 32 or the laser marking system 10 can, for example, move with the respective container 12 over substantially the entire length of the container conveyor 34 or only along a section of the container conveyor 34.
  • the movement of the marking field 32 or the laser marking system 10 with the container 12 can be realized in different ways.
  • the entire laser marking system 10 with the at least one laser source 14 and the at least one marking head 16 and optionally the at least one focusing lens 26 for The respective marking field 32 (and optionally the focusing field 30) can be movable along with the respective container 12.
  • the at least one laser source 14 can be stationary and the at least one marking head 16 can be movable to move the respective marking field 32 with the respective container 12.
  • at least one movable mirror device can be arranged in the beam path between the respective laser source 14 and the respective marking head 16 to deflect the laser beam from the respective laser source 14 to a current position of the respective marking head 16.
  • the at least one marking field 32 or the laser marking system 10 can be moved, for example, on a circular path or linearly.
  • the at least one marking field 32 is movable in such a way that it can follow a respective container 12 moved in the transport direction.
  • the at least one marking field 32 or the laser marking system 10 can rotate along with the containers 12 transported by the container conveyor 34 designed as a rotary conveyor.
  • the laser marking system 10 can be connected to a rotatable machine carousel of the container conveyor 34 so that it rotates along with the machine carousel.
  • the at least one marking field 32 or the laser marking system 10 can move, for example, linearly and parallel to the containers 12 transported by the container conveyor 34 designed as a linear conveyor.
  • the at least one marking head 16 and optionally the at least one laser source 14 can move linearly.
  • a mechanical coupling with the container conveyor 34 can be included for moving the laser marking system 10.
  • the laser marking system 10 can be mechanically coupled to one another via a rotatable machine carousel for joint movement.
  • the laser marking system 10 can be mechanically coupled to the container conveyor 34 or its container holders 36 for joint movement, for example via carriers or otherwise.
  • a separate drive for the laser marking system 10 can be included for example (not shown in Figure 2) to move the laser marking system 10.
  • the drive can be supplied with electrical energy, for example, from the energy supply device 15 (see Figure 1).
  • the drive can, for example, have one or more movement devices (mover, shuttle), e.g. independently movable, which can each move and preferably carry at least one marking head 16 and optionally at least one laser source 14.
  • the movement devices can, for example, be part of a long stator linear motor drive or a (magnetic) planar motor drive.
  • the drive can, for example, be electronically coupled to a drive of the container conveyor 34 directly or via a control device 38.
  • the drive can, for example, comprise an electric motor that can drive the laser marking system 10, the laser source 14, the marking head 16 and/or the focusing lens 26 to move, in order to move the at least one marking field 32 together with the containers 12 transported by the container conveyor 34.
  • the device 28 can have a control device 38 which is configured to operate the device 28 (e.g. the container conveyor 34 and optionally the own drive of the laser marking system 10) such that the laser marking system moves along with the containers 12 transported by the container conveyor 34 to move the at least one marking field 32, preferably essentially synchronously, and in the process laser marks the respective container 12 within the at least one marking field 32.
  • a control device 38 which is configured to operate the device 28 (e.g. the container conveyor 34 and optionally the own drive of the laser marking system 10) such that the laser marking system moves along with the containers 12 transported by the container conveyor 34 to move the at least one marking field 32, preferably essentially synchronously, and in the process laser marks the respective container 12 within the at least one marking field 32.
  • control device 38 can further be configured to operate the container conveyor 34 such that the containers 12 transported by the container conveyor 34 are rotated at least temporarily about their own vertical axis H by the container conveyor 34, e.g. by the container holders 36, during the laser marking.
  • the control device 38 is preferably designed as a central control device. However, it is also possible for the control device 38 to be implemented as a decentralized control, e.g. with one control sub-device per marking head 16 or per container holder 36.
  • Figures 3 to 9 show preferred embodiments for the device 28. For better clarity, not all individual elements in Figures 3 to 9 are provided with their own reference numerals.
  • the container conveyor 34 can be a rotary conveyor.
  • the laser marking system 10 can be moved completely or in sections with the containers 12 moved by the container conveyor 34 in the transport direction on a circular path.
  • the laser marking system 10 can be mechanically coupled to the container conveyor 34 via a rotatable machine carousel (rotor) of the device 28A for movement.
  • the container conveyor 34 can have a plurality of container holders 36, each of which can hold a container 12.
  • the container holders 36 can rotate about their respective vertical axes to rotate the containers 12.
  • the container holders 36 can, for example, each have a container turntable and optionally a centering head and/or an inflation device.
  • Each container holder 36 can contain a laser source 14 and a marking head 16.
  • the laser sources 14 and marking heads 16 can be arranged in a star shape, for example.
  • the laser sources 14 and the marking heads 16 can be arranged inside the rotary conveyor.
  • An infeed conveyor 40 designed as a transfer star can feed the containers 12 to the container conveyor 34. It is possible for the infeed conveyor 40 to be designed for a pitch delay or to change a pitch delay.
  • An outfeed conveyor 42 designed as a transfer star can transport the containers 12 away from the container conveyor 34 after laser marking.
  • the device 28B of Figure 4 may be similar to the device 28A of Figure 3.
  • a difference between the device 28B and the device 28A may be that a plurality of marking heads 16 may share a laser source 14.
  • a plurality of marking heads 16 may share a laser source 14.
  • two, three, four or more marking heads 16 may share a laser source 14.
  • One, two or more laser sources 14 may be included.
  • the device 28C of Figure 5 can be similar to the device 28B of Figure 4.
  • a difference between the device 28C and the device 28B can be that additional deflection mirrors 44 are included.
  • the deflection mirrors 44 can be arranged outside of the container conveyor 34 designed as a rotary conveyor.
  • one deflection mirror 44 can be included for each container holder 36.
  • the deflection mirror 44 can deflect an outwardly directed laser beam inwards to the respective container 12.
  • the deflection mirror 44 can be arranged in a beam path before or after the marking head 16. Accordingly, the marking heads 16 can be arranged, for example, inside or outside of the container conveyor 34 designed as a rotary conveyor. It is also possible that, as an alternative to the deflection mirrors 44, the marking heads 16 are arranged outside of the container conveyor 34 designed as a rotary conveyor.
  • the device 28D of Figure 6 comprises a long stator linear motor drive 46 with several movement devices for moving the laser sources 14 and the marking heads 16 along the container conveyor 34.
  • the movement devices can be guided circumferentially on a guide track of the long stator linear motor drive 46.
  • the guide track can extend parallel to the container conveyor 34.
  • at least one marking head 16 and one laser source 14 can be moved with the container 12 by means of a respective movement device.
  • the container 12 can optionally be rotated about its own vertical axis by means of a respective container holder 36 during laser marking.
  • the device 28E of Figure 7 may be similar to the device 28D of Figure 6.
  • a difference between the device 28E and the device 28D can be that several (e.g. two) marking heads 16 share a laser source 14.
  • several marking heads 16 can share a laser source 14.
  • two, three, four or more marking heads 16 can share a laser source 14.
  • One, two or more laser sources 14 can be included.
  • one marking head 16 could be included per laser source 14.
  • a difference between the device 28E and the device 28D may be that several marking heads 16 and at least one laser source 14 share a movement device of the long stator linear motor drive 46.
  • the device 28F of Figure 8 can be similar to the device 28A of Figure 3.
  • a difference between the device 28F and the device 28A can be that several marking heads 16 can be assigned to a container holder 36 or a container 12.
  • two marking heads 16 can be included per container holder 36 or container 12.
  • the multiple marking heads 16 can share one laser source 14 per container holder 36.
  • multiple marking heads 16 and one laser source 14 can be included per container holder 36.
  • a beam distributor or beam splitter 48 can divide a laser beam received from a laser source 14 into several marking heads 16.
  • a drive 50 e.g. an electric motor, can be included for rotating the container holders 36.
  • the device 28G of Figure 9 can be similar to the device 28A of Figure 3.
  • a difference between the device 28G and the device 28A can be that the laser marking system 10 has several laser units 52 that are specially shaped, which advantageously enables a particularly space-efficient arrangement.
  • An (external) shape (e.g. housing external shape) of the laser units 52 can extend towards the container holders 36.
  • the laser units 52 or their housings can each essentially have a cylinder sector shape (pie slice shape), a spherical sector shape or a ring segment shape.
  • an enveloping body for each laser unit 52 can have a cylinder sector shape, a spherical sector shape or a ring segment shape.
  • the laser units 52 can be arranged next to each other in a circle.
  • each container holder 36 may include one laser unit 52, as shown in Figure 9, or multiple container holders 36 may share one laser unit 52, e.g. two or three container holders 36 per laser unit 52 (not shown in Figure 9).
  • Each laser unit 52 can, for example, comprise at least one marking head 16 and/or at least one laser source 14.
  • each of the devices 28A to 28G can be combined with one another as desired. It is also understood that each of the devices 28A to 28G can be supplemented or modified with features that have been generally described with respect to the device 28.
  • the invention is not limited to the preferred embodiments described above. Rather, a large number of variants and modifications are possible, which also make use of the inventive concept and therefore fall within the scope of protection.
  • the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to.
  • the individual features of independent claim 1 are each disclosed independently of one another.
  • the features of the subclaims are also independent of all features of independent claim 1 and for example, independently of the features relating to the presence and/or configuration of the container conveyor and/or the laser marking system of independent claim 1. All range specifications herein are to be understood as disclosed in such a way that all values falling within the respective range are disclosed individually, e.g. also as preferred narrower outer limits of the respective range.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne entre autres un dispositif (28) pour le marquage au laser de contenants (12), le dispositif (28) comprenant un transporteur de contenants (34) pour transporter les contenants (12) et un système de marquage au laser (10) qui est conçu pour le marquage au laser à l'intérieur d'au moins un champ de marquage (32). Le système de marquage au laser (10) peut être déplacé pour mouvoir, de préférence de manière sensiblement synchrone, le ou les champs de marquage (32) avec les contenants (12) transportés par le transporteur de récipients (34). De manière avantageuse, le dispositif (28) peut prolonger sensiblement le temps de traitement disponible pour le marquage au laser des contenants (12).
PCT/EP2024/065218 2023-06-05 2024-06-03 Dispositif et procédé de marquage au laser de contenants Ceased WO2024251672A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP24730985.9A EP4719775A1 (fr) 2023-06-05 2024-06-03 Dispositif et procédé de marquage au laser de contenants
CN202480037293.2A CN121240972A (zh) 2023-06-05 2024-06-03 用于激光标记容器的设备和方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023114686.6 2023-06-05
DE102023114686.6A DE102023114686A1 (de) 2023-06-05 2023-06-05 Vorrichtung und Verfahren zum Lasermarkieren von Behältern

Publications (1)

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WO2024251672A1 true WO2024251672A1 (fr) 2024-12-12

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PCT/EP2024/065218 Ceased WO2024251672A1 (fr) 2023-06-05 2024-06-03 Dispositif et procédé de marquage au laser de contenants

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EP (1) EP4719775A1 (fr)
CN (1) CN121240972A (fr)
DE (1) DE102023114686A1 (fr)
WO (1) WO2024251672A1 (fr)

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE202013105750U1 (de) * 2012-12-18 2014-04-01 Sidel S.P.A. Con Socio Unico Maschine zur Bearbeitung von Behältern, insbesondere Kunststoffbehältern oder Flaschen, und in einer solchen Maschine verwendete Behälter
DE102013215638A1 (de) * 2013-08-08 2015-02-12 Krones Ag Vorrichtung zum Bedrucken von Behältern
EP2960057A1 (fr) * 2014-06-25 2015-12-30 Sidel S.p.a. Con Socio Unico Dispositif et procédé pour décorer la surface des récipients de forme irrégulière
CN107901615A (zh) * 2017-11-22 2018-04-13 贵州云侠科技有限公司 一种激光打印系统
WO2022039242A2 (fr) * 2020-08-20 2022-02-24 Ricoh Company, Ltd. Appareil de formation de motif et appareil de traitement laser
US20220266392A1 (en) * 2021-02-25 2022-08-25 Ricoh Company, Ltd. Marking device, medium, container, and marking method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8906578U1 (de) * 1989-05-29 1990-09-27 Siemens AG, 1000 Berlin und 8000 München Laserbearbeitungsvorrichtung
ATE152387T1 (de) * 1991-01-17 1997-05-15 United Distillers Plc Dynamische lasermarkierung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013105750U1 (de) * 2012-12-18 2014-04-01 Sidel S.P.A. Con Socio Unico Maschine zur Bearbeitung von Behältern, insbesondere Kunststoffbehältern oder Flaschen, und in einer solchen Maschine verwendete Behälter
DE102013215638A1 (de) * 2013-08-08 2015-02-12 Krones Ag Vorrichtung zum Bedrucken von Behältern
EP2960057A1 (fr) * 2014-06-25 2015-12-30 Sidel S.p.a. Con Socio Unico Dispositif et procédé pour décorer la surface des récipients de forme irrégulière
CN107901615A (zh) * 2017-11-22 2018-04-13 贵州云侠科技有限公司 一种激光打印系统
WO2022039242A2 (fr) * 2020-08-20 2022-02-24 Ricoh Company, Ltd. Appareil de formation de motif et appareil de traitement laser
US20220266392A1 (en) * 2021-02-25 2022-08-25 Ricoh Company, Ltd. Marking device, medium, container, and marking method

Also Published As

Publication number Publication date
EP4719775A1 (fr) 2026-04-08
DE102023114686A1 (de) 2024-12-05
CN121240972A (zh) 2025-12-30

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