EP3917715A1 - Automated system and method of cleaning moulds, blow moulds, and accessories used in the production of glass packaging - Google Patents
Automated system and method of cleaning moulds, blow moulds, and accessories used in the production of glass packagingInfo
- Publication number
- EP3917715A1 EP3917715A1 EP20709767.6A EP20709767A EP3917715A1 EP 3917715 A1 EP3917715 A1 EP 3917715A1 EP 20709767 A EP20709767 A EP 20709767A EP 3917715 A1 EP3917715 A1 EP 3917715A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- laser
- moulds
- robot
- accessories
- 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
Links
Classifications
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- 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 concerns an automated system and method of cleaning moulds, blow moulds, and accessories, such as troughs, deflectors, bottom plate, plunger, and funnels used in the production of glass packaging.
- Moulds, blow moulds, and accessories used in the production of glass packaging get soiled in the packaging production process, particularly with residues of graphite grease which is placed in moulds, blow moulds, and accessories as a lubricant to enable correct formation of glass packaging.
- graphite grease deposits on the surface of a mould, blow moulds, or accessories and in time substantially reduces the quality of glass packaging.
- moulds, blow moulds, and accessories must be regularly cleaned.
- accessories used in the production of glass packaging is performed by mechanical methods which consist in cleaning the soiled surfaces with a stream of compressed air containing an abrasive agent.
- the cleaning is achieved by imparting the kinetic energy to the abrasive grit.
- the abrasive grits remove any dirt deposited there.
- the method causes gradual damaging of the base material of the cleaned glass moulds, blow moulds, and accessories. After many cleaning cycles the elements must be subject to regeneration or disposed of.
- Another form of cleaning moulds, blow moulds, and accessories is a chemical method which consists in immersing moulds, blow moulds and accessories in specially prepared baths containing chemical agents.
- the bath is intended to remove any residue of graphite grease.
- the glass mould, blow moulds, and accessories cleaning methods described above involve mechanical or chemical aggressiveness towards the cleaned surface.
- the purpose of the invention is to develop a method of cleaning moulds, blow moulds, and accessories used in the production of glass packaging characterised by high cleaning power while causing no damages to the base material, environmentally friendly and requiring no manual labour.
- the method consists in removing any dirt, graphite grease in particular, from the cleaned surface according to the invention is characterised in that the cleaned surface is treated with laser ablation using a pulsed laser, where first the surface subject to cleaning is scanned with a 3D scanner to read the shape of the cleaned surface, and the obtained scan used to automatically generate, using a specialist software, the movement paths of the laser head mounted on a robot wrist; and/or the movement paths of the said laser head are generated based on specially-prepared input files containing the geometry of the surface subject to cleaning; moreover, the cleaning
- the pulsed laser is of the nanosecond, femtosecond, or picosecond type.
- the laser pulse generated in the source is supplied to the laser head,
- the duration of the laser pulse ranges from 0.1ns to 100ns
- the preferable energy of the laser beam ranges from 0.1 mJ to 200mJ
- the preferable pulse repetition frequency falls within the range from 5kHz to 50kHz
- the preferable length of the laser radiation wave ranges from 532nm to 1070nm.
- the laser beam is focused in the laser head by a lens the focal length of which preferably ranges from 120mm to 1000mm, and the laser dot size preferably falls within the range from 0.01 mm to 2mm.
- the cleaning process is conducted in a robotised cell.
- accessories made of metal, cast iron in particular, and used in the production of glass packaging according to the invention is characterised in that it contains a 3D scanner, a robotised cell incorporating the cleaning zone and the mould/blow mould/accessory loading zone fitted with technical means for positioning of the moulds, blow moulds and accessories subject to cleaning and for their placement in and removal from the said zones; it further contains at least one robot installed in the robotised cell, where at least one robot is fitted with a laser head mounted on its wrist.
- the system contains a 3D scanner, a robotised cell incorporating the cleaning zone and the mould/blow mould/accessory loading zone fitted with technical means for positioning of the moulds, blow moulds and accessories subject to cleaning and for their placement in and removal from the said zones; it further contains at least one robot installed in the robotised cell, where at least one robot is fitted with a laser head mounted on its wrist.
- the robot controller incorporates a robot controller, source of the pulsed laser, preferably of the nanosecond, femtosecond, or picosecond type, its cooling unit, and a filtering and ventilation device to serve the robotised cell.
- the source of the pulsed laser is interconnected with the laser head via an optical fibre which is preferably circular in cross section with the diameter ranging from 50pm to 600pm, or square in cross section with the side length ranging from 50pm to 600pm.
- the laser head is fitted with a focusing lens, the focal length of which preferably ranges from 120mm to 1000mm.
- the 3D scanner is mounted on the robot wrist.
- the solution according to the invention provides a fully automated system and method of laser cleaning of soiled surfaces of moulds, blow moulds, and accessories used in the production of glass packaging, based on the process of ablation of dirt from the treated surfaces, accompanied by conveying minimum volume of heat to the treated item without damaging its base surface. Moreover, the solution according to the invention ensures quick and precise treatment of the cleaned surface.
- the system according to the invention can cooperate with an automated stock of treated items and can be fully served by robots.
- the automated cell guarantees safety of the cleaning process involving focused laser radiation.
- An exemplary system contains:
- a robotised cell 1 having the cleaning zone 2 and the zone 3 for the loading of moulds, blow moulds and accessories 4, fitted with the rotating working table 5 featuring technical means, e.g. seats, for positioning the treated items, where the table 5 is positioned within the said zones;
- controller 8 of the industrial robot 7
- the rotating working table 5 fitted with technical means for the positioning of the treated items, e.g. seats, fitted in the loading zone 3, whereupon the table rotates so that the items subject to cleaning find themselves in the cleaning zone 2.
- the 3D scanner 12 mounted on the wrist of the six-axis industrial robot 7 placed in the cell 1 reads the shape of the surface to be cleaned, and the specialist software automatically generates the movement paths for the robot 7.
- the software automatically adjusts the cleaning parameters such as the angle, speed, and shape of the beam.
- the cleaning process is based on ablation and consists in using a focused nanosecond laser pulse to evaporate graphite grease from the surface of the treated item.
- the laser pulse is generated in the source 9 and supplied to the laser mirror head 6 mounted on the wrist of the industrial robot 7 via an optical fibre square in cross-section with the side length of 400pm. Using the mirrors and lenses in the laser mirror head 6, the pulse is directed and focused on the surface of the treated item.
- the laser beam is focused by the lens the focal length of which amounts to 250mm, where the dot size falls within the range from 0.8 to 1.2mm.
- the energy carried by the laser radiation pulse removes the layer of dirt without damaging the base layer (surface) of the treated item.
- the duration of the laser pulse is 30ns
- the energy of the laser radiation beam is 33mJ
- the pulse repetition frequency is 30kHz
- the length of the laser radiation wave is 1070nm.
- the robot movement paths may be generated based on the specially-prepared input files containing the geometry of the surface subject to cleaning; alternatively, the robot movement paths may additionally be generated based on specially-prepared input files containing the geometry of the cleaned surface.
- the femtosecond or pictosecond pulsed laser, and the optical fibre which interconnects the laser head and the laser source may be either circular in cross-section with the diameter ranging from 50pm to 600pm, or square in cross-section with the side length falling within the range from 50mih to 600pm.
- the focal length of the laser head lens which focuses the laser beam can range from 120mm to 1000mm, where the dot size can fall within the range from 0.01mm to 2mm.
- the duration of the laser pulse can range from 0.1ns to 100ns, the energy of the laser beam radiation can fall within the range from 0.1 mJ to 20OmJ, the pulse repetition frequency can fall within the range from 5kHz to 50kHz, and the length of the laser radiation wave can range from 532nm to 1070nm.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL428756A PL244598B1 (en) | 2019-01-31 | 2019-01-31 | Automated system and method of cleaning moulds, blank moulds and accessories used in the production of glass packaging |
PCT/PL2020/000008 WO2020159388A1 (en) | 2019-01-31 | 2020-01-28 | Automated system and method of cleaning moulds, blow moulds, and accessories used in the production of glass packaging |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3917715A1 true EP3917715A1 (en) | 2021-12-08 |
Family
ID=69771009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20709767.6A Pending EP3917715A1 (en) | 2019-01-31 | 2020-01-28 | Automated system and method of cleaning moulds, blow moulds, and accessories used in the production of glass packaging |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3917715A1 (en) |
PL (1) | PL244598B1 (en) |
WO (1) | WO2020159388A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114769223A (en) * | 2022-06-17 | 2022-07-22 | 烟台恩邦电子科技有限公司 | Laser cleaning machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10213876B2 (en) * | 2013-11-12 | 2019-02-26 | Magna International Inc. | System and method for high output laser trimming |
GB201701607D0 (en) * | 2017-01-31 | 2017-03-15 | Advanced Laser Tech Ltd | Scanning and cleaning of moulds |
US10442117B2 (en) * | 2017-04-17 | 2019-10-15 | Indian Institute Of Technology Bombay | Laser based tyre mold vent cleaning process and device |
-
2019
- 2019-01-31 PL PL428756A patent/PL244598B1/en unknown
-
2020
- 2020-01-28 WO PCT/PL2020/000008 patent/WO2020159388A1/en unknown
- 2020-01-28 EP EP20709767.6A patent/EP3917715A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2020159388A1 (en) | 2020-08-06 |
PL244598B1 (en) | 2024-02-12 |
PL428756A1 (en) | 2020-08-10 |
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