Machine, method and independent machine for cleaning lenses and scrubbing device

Abstract

The invention relates to a machine, a method and a stand-alone machine for cleaning lenses and a scrubbing device. The machine comprises a handling unit for carrying and transferring a lens to be cleaned along a processing path, and at least one processing unit having a processing chamber for processing the lens at a processing position along the processing path, the at least one processing unit comprising a cleaning unit for cleaning the lens at a processing position along the processing path. The cleaning unit has a cleaning chamber as a processing chamber for cleaning the lens. The at least one processing unit is arranged such that it can be moved along the movement path between a retracted position, in which it can be retracted, and a received position, in which it can be received. The lens carried by the handling unit can be transferred by the handling unit along a complete processing path outside the at least one processing unit and relative to the at least one processing unit, and a receiving position in which the lens carried by the handling unit is received in the processing chamber to allow the lens to be processed.

Description

Technical Field

[0001] The present invention relates to a machine for cleaning lenses (such as spectacle lenses or any other type of optical lens), and a method for cleaning such lenses. Background Art

[0002] The manufacture of optical lenses (such as, but not limited to, spectacle lenses) is typically completed in several steps in an optical laboratory. During the manufacturing process, the lenses may accumulate dust, particles, or residues that may affect their optical properties. Cleaning helps to remove these contaminants, thus ensuring that the lenses are pristine before subsequent manufacturing steps. Different cleaning methods are known, such as ultrasonic cleaning, solvent cleaning, brush cleaning, and rinsing with a special solution.

[0003] It is also necessary to inspect the lenses to evaluate the quality of the optical surface, the clarity and transparency of the material, and the accuracy of the optical parameters. There are various techniques, including visual inspection, automated optical inspection, or dedicated equipment such as interferometers, to inspect the lenses for defects, irregularities, or flaws that may affect their functionality. Such inspections are carried out at different stages of manufacturing to preferably identify any affecting issues as early as possible to maintain the required quality standards.

[0004] To clean the lenses from dust or residues from one of the various manufacturing steps, the prior art provides machines designed as long tunnels, where multiple cleaning stations are aligned along a main conveyor system. The dirty lenses are typically transported to the cleaning machine by a transport device and then loaded into the main conveyor system by an automated arm or manually manipulated. In each cleaning station, different cleaning processes are typically performed using chemical, mechanical, thermal, ultrasonic, and / or other techniques. When the lenses leave the machine at its downstream end, the cleaning process is completed, and the cleaned lenses are then placed back into the transport device.

[0005] The movement of the main conveyor that slowly passes through the different cleaning stations determines the output capacity of the entire unit. Typically, the lenses have two opposing surfaces to be cleaned simultaneously. For this purpose, the main conveyor can only contact the minimum support area of the lenses to expose the two surfaces as much as possible.

[0006] After leaving the cleaning machine, the lenses are transferred, for example, in a transport device to another processing stage. For example, the lenses can be transferred to a separate inspection station, where the lenses are inspected to evaluate the quality of the optical surface, the clarity and transparency of the material, and the accuracy of the optical parameters. This inspection is done by an automated machine or by an operator with the help of a specially designed lighting system that highlights the defects and helps to distinguish dust and other moving objects from real scratches or material inclusions.

[0007] An ordinary main conveyor with a very basic and minimal holding system can only firmly convey uncut lenses with a large ratio between diameter, optical surface curvature, and thickness. This restricts the field of such a system to the initial manufacturing steps before the processing or at least the edging of the lenses. In particular, once the machining of the lens surface is completed, the final machining step is to edge the lens to fit the spectacle frame in which the lens has to be placed. In particular, in the case of spectacle lenses, the shape of the edge lenses varies greatly according to customer needs and fashion trends. The attempt to use the transportation technology for uncut lenses also for edged lenses has proven problematic because of the high rate of lens loss during the transportation of the lenses through various cleaning stages.

[0008] Furthermore, the known main conveyor transportation systems move slowly through different cleaning stations, which results in the transfer of any cleaning liquid from one processing station to the next, thus creating contamination, which requires special purification equipment to maintain the consistency of the chemical composition of the liquids used at different stages. Moreover, due to the lateral channels required for the lenses and the lens-carrying systems, the openings present in any unit through which the conveyor system passes can hardly be sealed sufficiently. This results in even more contamination from one unit to the next. In the existing systems, this problem is solved by providing a wide distance between adjacent stations, resulting in a rather long machine, which is expensive and space- and energy-consuming. There are also main conveyor systems that horizontally convey the lenses and continuously introduce them into adjacent units by vertical movement. This requires a rather complex, expensive, and inflexible main conveyor system.

[0009] The final quality inspection is usually carried out in a separate machine and location, which requires the cumbersome transfer of the lenses from one conveyor to another; the above-mentioned transportation devices are usually used. This requires additional conveyance of the lenses, which requires even more handling systems, thus increasing the cost and the risk of losing lenses during processing. Moreover, multiple manual or automatic operations on the lenses usually contaminate the lenses, making it difficult for the inspection process to identify real defects and avoid taking into account the dirt accumulated on the lenses. Especially in the case of manual inspection, an operator trying to remove dust from the lens, for example, with an air gun, a cloth, or other mechanical devices may even scratch the lens during the quality inspection, thus increasing the number of defective products. SUMMARY OF THE INVENTION

[0010] Accordingly, it is an object of the present invention to provide a machine and a method that allow for the effective, reliable, and easy cleaning of lenses, such as spectacle lenses or any other type of optical lens, preferably regardless of their shape. Preferably, the inspection of machined (e.g., edged) and cleaned lenses should be facilitated and improved.

[0011] These objects are achieved by the subject matter of the independent claims. The dependent claims further develop the central idea of the invention.

[0012] According to a first aspect, the present invention relates to a machine for cleaning lenses, which lenses are, for example, spectacle lenses or any other type of optical lens. The machine includes a handling unit for carrying and transferring a lens to be cleaned along a processing path. The machine further includes at least one processing unit having a processing chamber for processing a lens carried by the handling unit at a processing position along the processing path. The at least one processing unit includes (or at least one) cleaning unit having a cleaning chamber as the processing chamber for cleaning a lens carried by the handling unit. The at least one processing unit is arranged such that it can move between a retracted position and a receiving position along a movement path, in the retracted position, a lens carried by the handling unit can be transferred by the handling unit along a complete processing path outside the at least one processing unit and relative to the at least one processing unit, and in the receiving position, a lens carried by the handling unit at the processing position is received in the processing chamber to allow the lens to be processed (e.g., cleaned).

[0013] The machine according to the present invention is designed such that the processing unit performs (at least in part) the movement to relatively transfer a lens into and out of the processing chamber. Thus, the handling unit can be simplified. In addition, such an arrangement allows the processing unit and the processing chamber to be more easily separated from each other, thereby reducing the potential risk of cross-contamination. The integration of the handling unit and the (one or more) movable processing units ensures that the cleaning process can be directly aligned with the transport mechanism and preferably also with a potential loading mechanism. This alignment guarantees the precise movement and positioning of the lens during processing (including cleaning), thereby reducing the error range and ensuring thorough and consistent cleaning results. Thus, effective, easy, and reliable cleaning can be obtained.

[0014] The handling unit may include a conveyor adapted to move along the processing path in a conveying direction. Thus, a common type of handling unit with a determined conveying direction can be used for precise lens transfer and handling.

[0015] The conveyor may be an endless conveyor having a closed-loop processing path. Such a conveyor allows a compact layout of the machine while preferably using common devices to implement it.

[0016] The handling unit may include at least one carrying device for gripping (e.g., clamping) a lens preferably at the (outer) circumferential edge of the lens such that the lens is carried while being transferred along the processing path and processed in the processing chamber. Such a carrying device for gripping a lens is simple in structure but very effective in handling the lens. Thus, the handling unit can be simplified while allowing precise handling of the lens throughout the process.

[0017] The carrier device can be connected to a conveyor to move along a processing path. Thus, the carrier device can be easily provided and moved along the processing path to allow for the efficient transfer of lenses, while the machine has a functionally low-complexity layout.

[0018] The carrier device protrudes towards the relevant processing unit at the processing position; and preferably protrudes vertically downwards towards the relevant processing unit. Thus, the handling unit can easily transfer the lens to the processing position, and then at this processing position, the processing units can move easily and simply along their movement paths to receive the lens therein. This benefits the process and allows for a simplified machine layout and functionality. If it protrudes vertically downwards, the cleanliness of the entire process can be improved because the lens faces downwards towards the processing unit or processing chamber, thereby effectively receiving even any dripping cleaning liquid. The lens at the processing position is effectively positioned above the corresponding processing unit or in the processing chamber, thus effectively reducing cross-contamination with other processing units. Then, the processing unit or processing chamber can easily move up and down to receive the lens, allowing for a simple travel motion.

[0019] The carrier device can be arranged to be movable at least at the processing position to approach the relevant processing unit so that the lens carried by the carrier device enters the relevant processing chamber of the processing unit at the receiving position. Thus, the carrier device can allow for movement towards the processing chamber, which in turn moves along the movement path, such that the corresponding movement can be minimized while the overall combined movement remains effective to easily receive the lens in the processing chamber. Thus, the handling unit can support the processing unit in its movement capacity function as needed.

[0020] Compared to the retracted position, the receiving position is preferably closer to the handling unit, and more preferably closer to the relevant processing position. Thus, the handling and transfer of the lens can be easily achieved at the retracted position to bring the lens to the desired processing position, while approaching the processing unit when moving the processing unit to the receiving position allows for the easy reception of the lens in the processing chamber to process the lens; i.e., at least clean the lens. Moreover, the handling unit can be made compact.

[0021] Preferably, the movement path is a translational movement path. Thus, the machine can be designed in a simple manner because only a single and straight translational movement needs to be achieved. Thus, the corresponding actuator can be provided in a simple manner.

[0022] The movement path can extend substantially vertically. This allows the processing units to always be vertically arranged above the lens or alternatively and preferably below the lens at the retracted position, thus reducing the risk of cross-contamination. Moreover, the machine layout can be made compact.

[0023] (At least one) cleaning unit may include (at least one) washing unit to wash the lens (preferably at a washing position which is a relevant processing position). Thus, effective cleaning of the lens can be obtained. The washing unit includes a washing chamber which is a cleaning chamber.

[0024] The washing unit may include cleaning elements for chemically and / or mechanically washing the lens in the cleaning chamber or the washing chamber. Thus, the machine can use effective cleaning means to easily and effectively clean the lens.

[0025] The cleaning elements may include brushing means for mechanically washing the lens in the cleaning (i.e., washing) chamber. Thus, an efficient brushing means can be provided.

[0026] The brushing means may include a brush which is rotatably arranged about a rotation axis to clean the lens surface (i.e., the lens surface of the lens) at a cleaning area positioned in the cleaning / washing chamber. The brush allows highly effective cleaning of the lens.

[0027] Preferably, the rotation axis may be inclined about an inclination axis to change the direction of the brush relative to the cleaning area. Thus, cleaning with the brush can be made more effective. Preferably, the inclination axis may be oriented orthogonally to the rotation axis, such that the relative movement of the brush can be simplified and the cleaning can be effective even during the relative movement (i.e., inclination) of the brush during cleaning. Thus, even areas that may be difficult for the brush to reach (e.g., areas close to the contact area of the holding unit or the carrying device that holds / holds / grips / clamps the lens during cleaning) can be effectively cleaned.

[0028] The machine may include a plurality of processing units, each of which can move between a relevant rejection position and a relevant processing position. Thus, the machine can be provided with processing units as needed to allow equally efficient and effective processing of the lens.

[0029] The plurality of processing units may preferably be arranged in a row, and more preferably side by side in a row. Thus, the machine can be provided in a compact manner while allowing effective processing of the lens.

[0030] The plurality of processing units may include a plurality of cleaning units, thereby improving the cleaning quality as needed.

[0031] Preferably, the plurality of cleaning units may include a washing unit or a plurality of washing units as described above. Thus, the washing can be improved as needed.

[0032] Additionally or alternatively, the plurality of cleaning units may (further) include at least one rinsing unit to rinse (preferably the cleaned) lenses (preferably at a rinsing position which is the relevant processing position). Thus, the lenses can be effectively removed from any residues; even the cleaning liquid from the cleaning process, thus increasing the purification of the cleaned lenses.

[0033] Preferably, the rinsing unit may include a rising element, such as a liquid nozzle, to apply a liquid (e.g., a liquid jet) to the lens. Thus, rising can be obtained in an easy and effective manner.

[0034] Alternatively or additionally, preferably, the plurality of cleaning units may (further) include at least one drying or purging unit to dry or purge (e.g., the cleaned and preferably also rinsed) lenses (preferably at a drying or purging position which is the relevant processing position). Thus, any liquid residues and / or hard particles (such as dust) can be removed, thereby avoiding potential cross - contamination and increasing the purification and cleanliness of the cleaned lenses.

[0035] Preferably, the drying or purging unit may include a drying or purging element, such as a (drying or purging) nozzle, to apply a fluid (e.g., a fluid jet; preferably a gaseous fluid or an air (jet)) to the lens. Thus, a simple and effective device for drying and / or purging the lens can be provided, thereby increasing the cleanliness of the cleaned lenses.

[0036] The plurality of processing units may also include at least one inspection unit to inspect the cleaned lenses at an inspection position which is the relevant processing position. Thus, even the inspection step can be integrated into the compact and effective arrangement of the movable processing units. Alternatively or additionally, the machine may further include at least one or more additional processing units, the additional processing units including at least one inspection unit to inspect the cleaned lenses at an inspection position along the processing path; preferably downstream of the cleaning unit. Thus, inspection can be provided but separated from the movable processing units, thereby allowing the inspection function to be arranged within the machine as needed - preferably allowing the machine to be more compactly arranged - and preferably also allowing highly accurate inspection at a desired position.

[0037] By integrating transportation, cleaning, and inspection functions into a single machine, the handling and transition between different processing stages can be facilitated, and the effort to implement it can be minimized. This reduces the time required for maintenance and allows for a faster output of cleaned lenses. Combining cleaning and inspection within the same machine allows for real-time assessment of the lens condition; preferably, due to the close proximity of cleaning and inspection, the risk of contaminating the lens is minimized. This immediate feedback loop ensures that any residues or defects can be quickly identified and addressed, thus maintaining high-quality standards. Additionally, having a single machine for these functions saves space, simplifies maintenance logistics, and potentially reduces the need for additional equipment or resources, making the system more cost-effective. Moreover, integration into a single machine simplifies the operation interface, making it user-friendly and accessible to technicians or operators. The simplified workflow reduces the need for extensive training and allows for easier adoption of the technology.

[0038] The at least one inspection unit may include at least one optical inspection unit for optically inspecting the lens and / or at least one visual inspection unit for visually inspecting the lens. Thus, the inspection function can be provided as needed, and preferably, any desired quality standard can be obtained.

[0039] The processing units can be arranged to move individually between their associated retracted positions and receiving positions. This will allow for individual control of the respective steps, thus allowing for an efficient process.

[0040] At least some or all of the processing units can also be arranged to move together between the retracted position and the receiving position. Thus, the movement and the corresponding actuators can be simplified, making the process more efficient and cost-saving, and the machine more compact and simplified.

[0041] At least one or more of the processing units are all arranged below the handling unit or below the processing path or at least below the associated processing positions. Thus, handling and processing can be effectively one above the other, making the entire machine compact, easily accessible for maintenance, and reducing the risk of cross-contamination.

[0042] The machine can further include a loading unit for loading the lenses to be cleaned onto the handling unit, preferably onto a conveyor or a carrier device (if any). The loading unit is preferably positioned upstream of the at least one processing unit along the processing path. Thus, the loading of lenses into the machine can be facilitated and preferably easily automated.

[0043] Similarly, the machine may include an unloading unit for unloading the cleaned lenses from the handling unit, preferably from the conveyor or the carrier device (if present). The unloading unit may be positioned downstream of the at least one processing unit along the processing path and preferably also downstream of additional processing units (if present). Thus, the unloading of the lenses can be facilitated and preferably automated.

[0044] The loading unit and the unloading unit may preferably be provided in the same loading unit. Thus, the machine can be made compact and preferably the number of components can be reduced, thereby reducing the cost of the machine.

[0045] Preferably, the loading unit and / or the unloading unit each include a handling device for transferring the lenses between the respective loading positions (e.g., where the lenses are transferred / supplied to the machine) and the handling unit, preferably between the respective loading positions (e.g., where the lenses are transferred / supplied to the machine) and the conveyor or the carrier device (if present). Thus, the loading of the lenses onto the handling unit / unloading of the lenses from the handling unit can be facilitated.

[0046] The machine may further include an orientation unit for orienting the lens to be cleaned (e.g., to a determined / optimized processing direction) before it is received by the handling unit. Thus, the orientation of the lens can be optimized relative to the handling unit, thereby improving the firm and tight holding function and reducing the risk of losing the lens during lens handling.

[0047] Preferably, the orientation unit may include a handling device, a scanning unit, and a control unit. The handling device is adapted to orient the lens, the scanning unit is for determining the actual orientation of the lens, and the control unit is for comparing the actual orientation of the lens with the determined processing direction of the lens and controlling the handling device to transfer the lens to the handling unit such that the handling unit can receive the lens oriented in the processing direction. Thus, the lens can be transferred to the handling unit efficiently and precisely, where the lens can be received in the desired and preferably optimized orientation to allow for safe transfer of the lens through the machine.

[0048] The machine may also include a cleaning fluid (e.g., liquid) circulation system having a reservoir for holding the cleaning fluid (e.g., liquid) and a circulation path for transporting the cleaning fluid (e.g., liquid) to respective cleaning chambers to clean the lenses. Preferably, the cleaning fluid circulation system also has a recirculation path for recirculating the used cleaning fluid (e.g., liquid) from the respective cleaning chambers. Thus, cleaning liquids (such as detergents or water) or other cleaning fluids or liquids can be easily provided to the respective processing units or chambers. Different storage means, such as tanks, can be provided to store the respective cleaning fluids (e.g., liquids). The cleaning fluid (e.g., liquid) can be circulated by using common pumps, such as peristaltic pumps or centrifugal pumps. As mentioned, potential cleaning fluids or liquids can be detergents, water, or any other fluid or liquid. The circulation path and / or the recirculation path may include filtering means to remove any undesired contaminants, such as debris. As required, the filtering means may include coarse filtering means and / or fine filtering means. The machine may also include heating means to heat the cleaning fluid / liquid as required.

[0049] The machine may also include a main frame for carrying the handling unit and at least one processing unit. Thus, the layout of the machine can be simplified, and the respective units can be easily supported and arranged relative to each other, allowing for easy and stable assembly and use.

[0050] The machine can be a stand-alone machine, thus allowing for easy transportation and installation of the machine as required, e.g., in a factory.

[0051] According to another aspect, the present invention relates to a method for cleaning lenses (such as spectacle lenses or any other type of optical lens), the method comprising the following steps, preferably in a given order.

[0052] In a first step, a machine according to the present invention as described above is provided.

[0053] In a second step, the lens is received by the handling unit to carry the lens.

[0054] In a third step, the lens is transferred along a processing path to a processing position by the handling unit.

[0055] In a fourth step, the cleaning unit is moved from a retracted position to a receiving position to receive the lens in the cleaning chamber at the processing position.

[0056] In a fifth step, the lens is cleaned in the cleaning chamber.

[0057] In a sixth step, the cleaning unit is moved from the receiving position to the retracted position to release the lens from the cleaning chamber at the processing position.

[0058] In an optional seventh step, additional processing steps may be carried out.

[0059] In a first optional step, the lens may be transferred by a handling unit along a processing path to another processing position or inspection position.

[0060] In an optional second optional step, a relevant processing unit, preferably another in a cleaning unit or an inspection unit, may be moved from a relevant retracted position to a relevant receiving position to receive the lens in a relevant processing chamber at another processing position.

[0061] In a third optional step, in a relevant processing unit, preferably in a relevant processing chamber, the lens is processed, preferably cleaned and / or inspected.

[0062] In an optional fourth optional step, the relevant processing unit is moved from the relevant receiving position to the relevant retracted position to release the lens from the relevant processing chamber at another processing position.

[0063] In an optional fifth optional step, at least the first optional step and the third optional step may be repeated as required, and preferably all of the first optional step to the fourth optional step are repeated; preferably, according to the number of processing units arranged continuously along the processing path.

[0064] In an eighth step, the lens is released from the handling unit as required, for example for further processing.

[0065] Thus, as described, the advantages of the machine allow the described efficient and effective process, thereby increasing the purification and cleanliness of the lens by a simple method.

[0066] According to another aspect, the present invention relates to an independent machine for cleaning lenses, such as spectacle lenses or any other type of optical lens. The independent machine includes a handling unit (preferably, for example, the handling unit as described above) for carrying and transferring the lens to be cleaned along a processing path. The standalone machine also includes (i.e., at least one) cleaning unit (preferably, for example, the cleaning unit as described above), the cleaning unit having a cleaning chamber for cleaning the lens carried by the handling unit at a cleaning position along the processing path. The independent machine also includes (i.e., at least one) inspection unit (preferably, for example, any one of the inspection units as described above) for inspecting the cleaned lens carried by the handling unit at an inspection position downstream of the cleaning position along the processing path. The independent machine may be the machine as described above.

[0067] By integrating transportation, cleaning, and inspection functions into a single machine, handling and transitions between different processing stages can be facilitated, and the effort to implement it minimized. This reduces the time required for maintenance and allows for a faster output of cleaned lenses. Combining cleaning and inspection within the same machine allows for real-time assessment of the lens condition; preferably, due to the close proximity of cleaning and inspection, the risk of contaminating the lens is minimized. This immediate feedback loop ensures that any residues or defects can be quickly identified and addressed, thus maintaining high-quality standards. Additionally, having a single stand-alone machine for these functions saves space, simplifies maintenance logistics, and potentially reduces the need for additional equipment or resources, making the system more cost-effective. Moreover, integration into a single stand-alone machine simplifies the operation interface, making it user-friendly and accessible to technicians or operators. The simplified workflow reduces the need for extensive training and allows for easier adoption of the technology. Additionally, the stand-alone machine allows for easy transportation, desired (re)positioning, and installation of the machine in the factory as needed.

[0068] The cleaning unit may include (i.e., at least one) washing unit (preferably, for example, the washing unit as described above) to wash the lens at a washing position that is the relevant cleaning position. Thus, effective cleaning of the lens can be obtained. The washing unit may include a washing chamber as the cleaning chamber.

[0069] The cleaning unit may include cleaning elements (preferably, for example, the cleaning elements as described above) for chemically and / or mechanically cleaning the lens in the cleaning chamber or washing chamber. Thus, the machine can use effective cleaning means to easily and effectively clean the lens.

[0070] The cleaning elements may include brushing means (preferably, for example, the brushing means as described above) for mechanically cleaning the lens in the cleaning (i.e., washing) chamber. Thus, an efficient brushing means can be provided.

[0071] The brushing means may include a brush (preferably, for example, the brush as described above) that is rotatably arranged about a rotation axis to clean the lens surface (i.e., the lens surface of the lens) located at a cleaning area (e.g., in the cleaning / washing chamber). Such a brush allows for highly effective cleaning of the lens.

[0072] Preferably, the rotation axis may be tilted about an inclination axis to change the direction of the brush relative to the cleaning area. Thus, cleaning with the brush can be made more effective. Preferably, the inclination axis may be oriented orthogonally to the rotation axis such that the relative movement of the brush can be simplified and cleaning can be effective even during the relative movement (i.e., tilting) of the brush during cleaning. Thus, even areas that may be difficult for the brush to reach (e.g., areas close to the contact area of the holding unit or carrier device that holds / keeps / grips / clamps the lens during cleaning) can be effectively cleaned.

[0073] The standalone machine may include a plurality of cleaning units. Thus, cleaning can be effectively improved as needed.

[0074] The plurality of cleaning units may include a cleaning unit or a plurality of cleaning units, as described above. Thus, the cleaning can be effectively improved as needed.

[0075] Additionally or alternatively, the plurality of cleaning units may (further) include at least one rinsing unit to rinse the (preferably cleaned) lens carried by the handling unit (preferably at a rinsing position which is a relevant cleaning position along the processing path; preferably downstream of the cleaning position and preferably upstream of the inspection position). Thus, the lens can be effectively removed from any residue and even from the cleaning liquid of the cleaning process, thereby increasing the purification of the cleaned lens.

[0076] Preferably, the rinsing unit may include a rising element, such as a liquid nozzle, to apply a liquid (e.g., a liquid jet) to the lens. Thus, rising can be obtained in an easy and effective manner.

[0077] Alternatively or additionally, preferably, the plurality of cleaning units may (further) include at least one drying or purging unit to dry or purge the (e.g., cleaned and preferably also rinsed) lens carried by the handling unit, preferably at a drying or purging position which is a relevant cleaning position along the processing path; preferably downstream of the cleaning position, preferably downstream of the rinsing position (if any), and preferably upstream of the inspection position. Thus, any liquid residue and / or hard particles (such as dust) can be removed, thereby avoiding potential cross - contamination and increasing the purification and cleanliness of the cleaned lens.

[0078] Preferably, the drying or purging unit may include a drying or purging element, such as a (drying or purging) nozzle, to apply a fluid (e.g., a fluid jet; preferably a gaseous fluid or an air (jet)) to the lens. Thus, a simple and effective device for drying and / or purging the lens can be provided, thereby increasing the cleanliness of the cleaned lens.

[0079] Preferably, the standalone machine may include a plurality of inspection units. Thus, the most accurate inspection of the cleaned lens can be obtained as needed; for example, meeting any required quality standard.

[0080] At least one or more inspection units may include at least one optical inspection unit for optically inspecting the lens and / or at least one appearance inspection unit for inspecting the appearance of the lens. Thus, inspection functions can be provided as needed, and thus preferably any desired quality standard can be obtained.

[0081] According to another aspect, the present invention relates to a method for cleaning a lens, such as an eyeglass lens or any other type of optical lens, the method comprising the following steps, preferably in a given order:

[0082] In a first step, providing an independent machine as described above.

[0083] In a second step, receiving the lens at a loading position by a handling unit, preferably, to carry the lens.

[0084] In a third step, transferring the lens along a processing path to a cleaning position by the handling unit.

[0085] In a fourth step, in a cleaning chamber, at the cleaning position, preferably at a washing position, cleaning the lens, preferably washing the lens.

[0086] According to an optional fifth step, first transferring the lens along the processing path to a rinsing position by the handling unit, and then rinsing the lens at the rinsing position by a rinsing unit.

[0087] According to an optional sixth step, first transferring the lens along the processing path to a drying or purging position by the handling unit, and then drying or purging the lens at the drying or purging position by a drying or purging unit.

[0088] According to a seventh step, transferring the (cleaned, preferably washed, and further preferably also rinsed and / or dried / purged) lens along the processing path to an inspection position by the handling unit.

[0089] In an eighth step, inspecting the lens at the inspection position by an inspection unit.

[0090] In a ninth step, releasing the cleaned and inspected lens from the handling unit, preferably at an unloading position downstream of the inspection position.

[0091] With the described method, a combined function of cleaning and inspection within the same independent machine can be obtained easily, effectively, and efficiently. All the advantages of the independent machine as described above also apply to this method.

[0092] According to another aspect, the present invention further relates to a brushing device (preferably, for example, a brushing device as described above), for mechanically cleaning a lens, such as an eyeglass lens or any other type of optical lens. The brushing device includes a brush, which is rotatably arranged around a rotation axis to clean a lens surface (i.e., the lens surface of the lens) located at a cleaning area. The rotation axis can be tilted around an inclination axis to change the direction of the brush relative to the cleaning area.

[0093] The brushing device of the present invention allows for easy and effective cleaning of the lens. This is even because the tilting function increases the brushing action direction relative to the cleaning area and thus relative to the lens to be cleaned. Therefore, areas that may be difficult for the brush to reach can even be effectively cleaned (for example, areas close to the contact area of the holding unit or the carrying device that holds / holds / grips / clamps the lens during cleaning).

[0094] The tilting axis can be oriented orthogonally to the rotation axis. Therefore, the relative movement of the brush can be simplified, and the cleaning can be made effective even during the relative movement (i.e., tilting) of the brush during cleaning.

[0095] According to another aspect, the present invention further relates to a brushing system including the brushing device as just described. In addition, the brushing system further includes a cleaning chamber in which the brush is movably arranged to be rotatable about the rotation axis and tiltable about the tilting axis to clean the lens received in the cleaning chamber at the cleaning area.

[0096] Therefore, a compact and efficient brushing system for highly precise cleaning can be provided.

[0097] According to another aspect, the present invention further relates to a machine for cleaning lenses (such as spectacle lenses or any other type of optical lens). The machine includes the brushing system just described. In addition, the machine further includes a handling unit for carrying and transferring the lens to be cleaned along a processing path to a cleaning or washing position, at which the lens is cleaned by the brushing device in the cleaning chamber.

[0098] Through the machine just described, compact, effective, and efficient cleaning of the lens can be provided. The machine can be, for example, any of the machines described above.

[0099] According to another aspect, the present invention also relates to a method for cleaning lenses (such as spectacle lenses or any other type of optical lens). The method includes the following steps; preferably in a given order:

[0100] In an optional first step, the machine just described is provided.

[0101] In an optional second step, the lens is received by the handling unit to carry the lens.

[0102] In an optional third step, the lens is transferred along the processing path to the cleaning or washing position by the handling unit.

[0103] In a fourth step, preferably at a cleaning or washing position, the lens (lens surface) is cleaned by means of the brushing device according to the invention (e.g., in a cleaning chamber), wherein the brush rotates about a rotation axis and is selectively tilted about an inclination axis (i.e., during cleaning).

[0104] In an optional fifth step, the cleaned lens is released from the handling unit.

[0105] Before and / or after cleaning the lens, additional processing steps can be carried out as required.

[0106] Thus, a method for highly accurate, effective and efficient cleaning can be provided.

[0107] Further advantages and embodiments of the invention will be described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0108] Figure 1 A partial cross-sectional side view schematic of a machine according to a first embodiment of the invention is shown, wherein the processing unit is in a retracted position,

[0109] Figure 2 Shows according to Figure 1 A partial cross-sectional side view schematic of a machine, wherein the processing unit is in a receiving position,

[0110] Figure 3 Shows Figure 1 Detail A of

[0111] Figure 4 Shows according to Figure 1 A perspective view of the carrier device of a machine

[0112] Figure 5 Shows Figure 4 A side view of the carrier device of

[0113] Figure 6 Shows a cross-sectional view along line A-A of Figure 5

[0114] Figure 7 Shows a cross-sectional view along line B-B of Figure 5 <##

[0115] Figure 8 Shows Figure 4 Another side view of the carrier device of

[0116] Figure 9 Shows a cross-sectional view along line C-C of Figure 8

[0117] Figure 10 Shows along Figure 8 ​​​Cross-sectional view of line D-D

[0118] Figure 11 shows a perspective view of a brushing device of a machine according to an embodiment of the present invention, in which two different working positions and tilting directions of the brush are shown by thick lines and dashed lines respectively Figure 1 respectively

[0119] Figure 12 shows Figure 11 a side view of the brushing device

[0120] Figure 13 and shows Figure 11 another side view of the brushing device Detailed Description of the Invention

[0121] The accompanying drawings show a machine 1 for cleaning a lens L (such as an eyeglass lens or any other type of optical lens), and preferably for cleaning an edged lens L, according to the present invention, and components of the machine 1. Preferably, the machine 1 can be a standalone machine 1

[0122] The machine 1 includes a handling unit 2 for carrying and transferring the lens L to be cleaned along a processing path P (see Figures 1 to 3 )

[0123] The handling unit 2 may include a conveyor 20 adapted to move along the processing path P in a conveying direction C (see Figures 1 to 3 )

[0124] Preferably, the machine 1 includes at least one processing unit 3, 4, 5 having processing chambers 30, 40, 50 for processing the lens L carried by the handling unit 2 at a processing position W along the processing path P (see Figure 1 and Figure 2 )

[0125] Preferably, the at least one processing unit includes a cleaning unit 3 having a cleaning chamber 30 as a processing chamber for cleaning the lens L carried by the handling unit 2; for example, at a cleaning position Wc as the processing position W

[0126] Referring to Figure 2 and Figures 11 to 13 , the (at least one) cleaning unit 3, 4, 5 may include the (at least one) cleaning unit 3 for cleaning the lens L; preferably at a cleaning position Ww as the relevant processing position W or cleaning position Wc. Preferably, the cleaning unit 3 includes a cleaning element 7 for chemically and / or mechanically cleaning the lens L in the cleaning chamber 30

[0127] Preferably, the cleaning element 7 includes a brushing device 70, as best seen in Figures 11 to 13 , for mechanically cleaning the lens L, preferably in the cleaning chamber 30. The brushing device 70 forms a separate part of the present invention. The brushing device 70 may include a brush 71, which is rotatably arranged about a rotation axis X to clean the lens surface S of the lens L located at the cleaning area A; preferably in the cleaning chamber 30. Preferably, the rotation axis X can be inclined about an inclination axis Y to change the direction of the brush 71 relative to the cleaning area A. Preferably, the inclination axis Y can be oriented orthogonally to the rotation axis, as best seen in Figure 11 .

[0128] The handling unit 2 may include at least one carrying device 21 for gripping (e.g., clamping) the lens L, preferably at the (outer) circumferential edge E of the lens, such that the lens L is carried while being transferred along the processing path P and processed in the processing chambers 30, 40, 50. Preferably, the carrying device 21 can be connected to a conveyor 20 to move along the processing path P, as best seen in Figures 1 to 3 .

[0129] Preferably, at least one processing unit 3, 4, 5 is arranged such that it can move along a movement path M between a retracted position (see Figure 1 ) and a receiving position (see Figure 2 ). In the retracted position, the lens L carried by the handling unit 2 can be transferred by the handling unit 2 along the complete processing path P outside and relative to at least one processing unit 3, 4, 5. In the receiving position, the lens L carried by the handling unit 2 at the processing position W is received in the processing chambers 30, 40, 50 to allow the lens L to be processed.

[0130] The carrying device 21 can protrude towards the relevant processing unit 3, 4, 5 at the processing position W, as shown, preferably protruding vertically downwards, as can be clearly seen from Figure 1 and Figure 2 .

[0131] The carrying device 21 can be arranged to be movable (not shown) at least at the processing position W to approach the relevant processing unit 3, 4, 5, so that the lens L carried by the carrying device 21 enters the relevant processing chamber 30, 40, 50 of the relevant processing unit 3, 4, 5 in the receiving position.

[0132] Preferably, the receiving position (see Figure 2 ) is closer to the handling unit 2 than the retracted position (see Figure 1 ), and more preferably closer to the relevant processing position W.

[0133] Preferably, the movement path M is a translational movement path, which preferably extends substantially vertically, as can be seen from Figure 1 and Figure 2 Deduced.

[0134] The machine 1 may comprise a plurality of processing units 3, 4, 5 (in Figure 1 and Figure 2 , four of these processing units are shown), each of which can be in a relative retracted position ( Figure 1 ) and the associated receive location ( Figure 2 ). Figure 1 and Figure 2 As exemplarily shown in FIG, a plurality of processing units 3, 4, 5 are preferably arranged in a row, and more preferably arranged side by side in a row.

[0135] Preferably, the plurality of processing units 3, 4, 5 include a plurality of cleaning units 3, 4, 5. Preferably, the plurality of cleaning units 3, 4, 5 include a washing unit 3 or a plurality of washing units 3 (e.g., Figure 1 and Figure 2 In FIG, two cleaning units 3) are shown.

[0136] Additionally or alternatively, the plurality of cleaning units 3, 4, 5 may (further) include at least one rinsing unit 4 for rinsing the (preferably cleaned) lens L carried by the transport unit 2 at a rinsing position Wr, which is an associated processing position W or cleaning position Wc along the processing path P; preferably downstream of the rinsing position Ww (and preferably upstream of the inspection position I, which is further defined below). Preferably, the rinsing unit 4 may include a rising element, such as a (fluid or liquid) nozzle, for applying a fluid or liquid (e.g., a fluid or liquid jet) to the lens L within the corresponding cleaning chamber 40.

[0137] Additionally or alternatively, the plurality of cleaning units 3, 4, 5 may (further) include at least one drying or blowing unit 5 for drying or blowing the (preferably cleaned and further preferably also rinsed) lens L carried by the handling unit 2 at a drying or blowing position Wd, which is an associated processing position W or cleaning position Wc along the processing path P; preferably downstream of the washing position Ww, preferably downstream of the rinsing position Wr (and preferably upstream of the inspection position I, which is further defined below). Preferably, the drying or blowing unit 5 may include a drying or blowing element, such as a (drying or blowing) nozzle, for applying a fluid (jet) - preferably a gaseous fluid or an air jet - to the lens L.

[0138] The plurality of processing units 3, 4, 5 may further comprise at least one inspection unit for inspecting the cleaned lens L at an inspection position as the associated processing position W. Alternatively or additionally,Figure 1 and Figure 2 as shown and derivable from Figure 1 and Figure 2 derivable from, the machine 1 may further include at least one or more additional processing units 6, which include at least one inspection unit 60 for inspecting the cleaned lens L carried by the handling unit 2 at an inspection position I along the processing path P; preferably, downstream of the cleaning position Wc and / or the cleaning units 3, 4, 5, as derivable from Figure 1 and Figure 2 derivable from. Here, seven additional processing units are shown, five of which each include an inspection unit 6 here.

[0139] (Separate) machine 1 may include multiple inspection units 60.

[0140] At least one or more inspection units 60 may include at least one (here three) optical inspection units 61 for optically inspecting the lens L and / or at least one (here one) appearance inspection unit 62 for appearance inspection of the lens L.

[0141] Refer to Figure 1 and Figure 2 , in addition to the inspection unit 60, three additional processing units 6 are also shown, which may be used as needed according to a given requirement, or simply left without additional functions.

[0142] The processing units 3, 4, 5 may be arranged to move individually between their associated retracted positions and receiving positions. However, as Figure 1 and Figure 2 shown, it is also possible that at least some or (exemplarily shown here) all of the processing units 3, 4, 5 are arranged to move together between the retracted position ( Figure 1 ) and the receiving position ( Figure 2 ).

[0143] As Figure 1 and Figure 2 shown, at least one or more processing units 3, 4, 5 may preferably all be arranged below the handling unit 2 or below the processing path P or at least below the relevant processing position W.

[0144] The machine 1 may further include a loading unit 80 for loading the lens L to be cleaned onto the handling unit 2, preferably onto the conveyor 20 or the carrier device 21 (if any). The loading unit 80 may be positioned upstream of at least one processing unit 3, 4, 5 along the processing path P. In addition, the machine 1 may further include an unloading unit 81 for unloading the cleaned lens L from the handling unit 2, preferably from the conveyor 20 or the carrier device 21 (if any). The unloading unit 81 is preferably positioned downstream of at least one processing unit 3, 4, 5 along the processing path P, and more preferably also downstream of these additional processing units 6 if there are additional processing units 6.

[0145] The loading unit 80 and the unloading unit 81 may be provided in the same loading unit 8, as Figure 1 and Figure 2 exemplarily shown in.

[0146] The loading unit 80 and / or the unloading unit 81 may each include a handling device 83 for transferring the lens L between the respective loading positions and the handling unit 2 (preferably, the conveyor 20 or the carrier device 21 (if any)).

[0147] The machine 1 may further include an orientation unit 82 for orienting the lens L to be cleaned before it is received by the handling unit 2. Preferably, the orientation unit 82 may include a handling device 83, a scanning unit 84, and a control unit 85. The handling device 83 is adapted to orient the lens L, the scanning unit 84 is used to determine the actual orientation of the lens L, and the control unit 85 is used to compare the actual orientation of the lens L with the determined processing orientation of the lens L and control the handling device 2 to transfer the lens L to the handling unit 2 such that the handling unit 2 can receive the lens L oriented in the processing orientation.

[0148] The machine 1 may further include a cleaning fluid (e.g., liquid) circulation system 9 having a reservoir 90 for holding the cleaning fluid or liquid and a circulation path 91 for transporting the cleaning fluid or liquid to the respective cleaning chambers 30, 40, 50 for cleaning the lens L. Preferably, the cleaning fluid circulation system further has a recirculation path 92 for recirculating the used cleaning fluid or liquid from the respective cleaning chambers 30, 40, 50. In particular, the cleaning fluid or liquid may be a detergent, (clean) water (e.g., for rinsing), and / or a gaseous fluid or air (e.g., for drying or purging).

[0149] The machine 1 may also include a main frame 10, as Figure 1Schematically shown in the figure for carrying the handling unit 2 and at least one processing unit 3, 4, 5 and additional processing unit 6 (if any) and all other elements of the machine 1, as described.

[0150] Hereinafter, a method for cleaning a lens L (such as an eyeglass lens or any other type of optical lens) is described; the following steps are preferably carried out in a given order.

[0151] In a first step, a machine 1 according to the present invention is provided.

[0152] In a second step, the lens L is received by the handling unit 2 to carry the lens L. This can be exemplarily shown at station 0, and a loading unit 80 can be provided at station 0.

[0153] In a third step, the lens L is transferred by the handling unit 2 along the processing path P to the processing position W (exemplarily transferred to station 1 here).

[0154] In a fourth step, the cleaning units 3, 4, 5 (here preferably the first cleaning unit 3) move from the retracted position (see Figure 1 ) to the receiving position (see Figure 2 ) to receive the lens L in the cleaning chambers 30, 40, 50 (here the first cleaning chamber 30) at the processing position W (here the cleaning position Wc and the washing position Ww).

[0155] In a fifth step, the lens L is cleaned in the cleaning chambers 30, 40, 50.

[0156] In a sixth step, the cleaning units 3, 4, 5 move from the receiving position ( Figure 2 ) to the retracted position ( Figure 1 ) to release the lens L from the cleaning chambers 30, 40, 50 at the processing position W.

[0157] In an optional seventh step, the lens can then be advanced through more processing units 3, 4, 5 or additional processing unit 6 as needed.

[0158] [[ID=3C]]In a first optional step, the lens L can be transferred by the handling unit 2 along the processing path P to another processing position W (here at stations 2 - 4) or inspection position I (here at stations 5 - 9).

[0159] In an optional second optional step, a relevant processing unit 3, 4, 5, preferably another one of the cleaning units 3, 4, 5 or an inspection unit, can move from the relevant retracted position (see Figure 1 ) to the relevant receiving position (see Figure 2 ) to receive the lens L in the relevant processing chamber 30, 40, 50 at another processing position W.

[0160] In a third optional step, the lens can be processed, preferably cleaned or inspected, in the associated processing units 3, 4, 5, 6, preferably in the associated processing chambers 30, 40, 50.

[0161] In an optional fourth step, the associated processing units 3, 4, 5 are moved from the associated receiving positions (see Figure 2 ) to the associated retracted positions (see Figure 1 ) to release the lens L from the associated processing chambers 30, 40, 50 at another processing position W.

[0162] In a fifth optional step, the first and third optional steps are repeated at least, and preferably all of the first to fourth optional steps are repeated, as required, preferably according to the number of processing units 3, 4, 5, 6 (including additional processing unit 6) arranged successively along the processing path P.

[0163] Finally, in an eighth step, the lens L is released from the handling unit 2; preferably at the unloading unit 81 by using a handling device 83 (here at station 0).

[0164] According to the invention, there is provided a stand-alone machine 1 for cleaning a lens L (such as an ophthalmic lens or any other type of optical lens, preferably an edged lens), and is a separate part of the invention. The stand-alone machine 1 includes a handling unit 2 / the handling unit 2 already described for carrying and transferring the lens L to be cleaned along a processing path P. In addition, the stand-alone machine 1 further includes cleaning units 3, 4, 5 / the cleaning units 3, 4, 5 already described, which have cleaning chambers 30, 40, 50 for cleaning the lens L carried by the handling unit 2 at a cleaning position Wc along the processing path P. The stand-alone machine 1 further includes an inspection unit 60 / the inspection unit 60 already described, which is used to inspect the cleaned lens L carried by the handling unit 2 at an inspection position I along the processing path P downstream of the cleaning position Wc.

[0165] The cleaning units 3, 4, 5 can include a washing unit 3 / the washing unit 3 already described to wash the lens L at a washing position Ww as the associated cleaning position Wc. The washing unit 3 can include a cleaning element 7 for chemically or mechanically cleaning the lens L in a cleaning chamber (here a washing chamber) 30.

[0166] The cleaning element 7 may include the brushing device 70 / the brushing device 70 already described, for mechanically cleaning the lens L in the cleaning chamber 30. The brushing device 70 may include a brush 71, which is rotatably arranged around a rotation axis X to clean the lens surface S of the lens L located at the cleaning area A in the cleaning chambers 30, 40, 50. The rotation axis X may preferably be inclined around an inclination axis Y to change the direction of the brush 71 relative to the cleaning area A. The inclination axis Y may preferably be oriented orthogonally to the rotation axis X, as already described above.

[0167] The standalone machine 1 may include a plurality of cleaning units 3, 4, 5.

[0168] The plurality of cleaning units 3, 4, 5 may preferably include a cleaning unit 3 or a plurality of cleaning units 3.

[0169] The plurality of cleaning units 3, 4, 5 may (additionally) include at least one rinsing unit 4 / the at least one rinsing unit 4 already described, for rinsing the (preferably cleaned) lens L carried by the handling unit 2 at a rinsing position Wr (i.e., as a relevant cleaning position Wc) along the processing path P; preferably downstream of the cleaning position Ww and preferably upstream of the inspection position I.

[0170] The rinsing unit 4 may include a rinsing element 40, such as a liquid nozzle, to apply a liquid (e.g., a liquid jet) to the lens L.

[0171] The plurality of cleaning units 3, 4, 5 may (additionally) include at least one drying or blowing unit 5 / the at least one drying or blowing unit 5 already described, for drying or blowing the (preferably cleaned and / or preferably rinsed) lens L carried by the handling unit 2 at a drying or blowing position Wd as a relevant cleaning position Wc along the processing path P; preferably downstream of the cleaning position Ww, preferably downstream of the rinsing position Wr (if present), and further preferably upstream of the inspection position I.

[0172] The drying or blowing unit 5 may include a drying or blowing element / the drying or blowing element already described, such as a (drying or blowing) nozzle, to apply a fluid (e.g., a fluid jet) - preferably a gaseous fluid or air (jet) - to the lens L.

[0173] The standalone machine 1 may include a plurality of inspection units 60. At least one or more inspection units 60 may include at least one optical inspection unit 61 for optically inspecting the lens L and / or at least one appearance inspection unit 62 for inspecting the appearance of the lens L. As described, the illustrated standalone machine 1 exemplarily includes four optical inspection units 61 and one appearance inspection unit 62. However, the present invention is not limited thereto.

[0174] In the following, a method for cleaning a lens L, such as an eyeglass lens or any other type of optical lens, will be described; preferably, the following steps are carried out in a given order:

[0175] In a first step, an independent machine 1 is provided.

[0176] In a second step, the lens L is received by a handling unit 2, preferably at a loading position (here at station 0), to carry the lens L.

[0177] In a third step, the lens L is conveyed by the handling unit 2 along a processing path P to a processing position W or a cleaning position Wc.

[0178] In a fourth step, in a cleaning chamber 30, 40, 50 (here the washing chamber 30) (here at stations 1 and 2), the lens L is cleaned, preferably washed, at the cleaning position Wc (here the washing position Ww).

[0179] In an optional fifth step, the lens L can then be transferred by the handling unit 2 along the processing path P to a rinsing position Wr, and then the lens L is rinsed at the rinsing position Wr (here at station 3) by a rinsing unit 4.

[0180] In an optional sixth step, the lens L can then be transferred by the handling unit 2 along the processing path P to a drying or blowing position Wd, and then the lens L is dried or blown at the drying or blowing position Wd (here at station 4) by a drying or blowing unit 50.

[0181] In a seventh step, the lens L is then transferred by the handling unit 2 along the processing path P to an inspection position I (here at stations 5 - 9).

[0182] In an eighth step, the lens L is then inspected at the inspection position I by an inspection unit 60.

[0183] In a ninth step, the cleaned and inspected lens L is released from the handling unit 2, preferably at an unloading position located downstream of the inspection position I (here also at station 0).

[0184] According to the present invention, a brushing device 70 for mechanically cleaning a lens L, such as an eyeglass lens, preferably an edged lens, is described as a separate part of the present invention.

[0185] The brushing device 70 includes a brush 71, which is rotatably arranged about a rotation axis X to clean a lens surface S of the lens L located at a cleaning area A. The rotation axis X can be tilted about an inclination axis Y to change the direction of the brush 71 relative to the cleaning area A. This can be derived from Figures 11 to 13 This. The inclination axis Y can be oriented orthogonally to the rotation axis X.

[0186] The brushing device 70 can move along the conveying axis Z to approach and move away from the cleaning area A relative to the brush 71, thereby allowing the lens L to enter the cleaning area A and / or adjusting the brushing device 70 according to the different thicknesses of different lenses L to be cleaned. The conveying axis Z is preferably oriented parallel to the tilting axis Y.

[0187] A brushing system 700 can be provided, which includes the brushing device 70 just described and a cleaning or washing chamber 30. In the cleaning or washing chamber 30, the brush 71 is movably arranged to be rotatable about the rotation axis X and tiltable about the tilting axis Y to clean the lens L accommodated in the cleaning chamber 30 at the cleaning area A.

[0188] A machine 1 for cleaning a lens L (such as an eyeglass lens or any other type of optical lens) is provided, which includes the brushing system 700 just described and a handling unit 2 / the handling unit 2 already described. The handling unit 2 is used to transport and transfer the lens L to be cleaned along the processing path P / the processing path P already described to the cleaning position Ww, where the lens L is cleaned by the brushing device 70 in the cleaning chamber 30.

[0189] Hereinafter, a method for cleaning a lens (such as an eyeglass lens or any other type of optical lens) is described; preferably, the following steps are performed in a given order:

[0190] In an optional first step, the machine just described can be provided.

[0191] In an optional second step, the lens L can be received by the handling unit 2 to carry the lens L.

[0192] In an optional third step, the lens L can be transferred by the handling unit 2 along the processing path P to the cleaning position Wc or the cleaning position Ww.

[0193] In a fourth step, the lens surface S of the lens L is cleaned at the cleaning position Wc or the cleaning position Wc by the brushing device 70 in the cleaning or washing chamber 30, where the brush 71 rotates about the rotation axis X and selectively tilts about the tilting axis Y during cleaning.

[0194] In an optional fifth step, the cleaned lens L can be released from the handling unit 2.

[0195] The present invention is not limited by the embodiments described above, as long as it is covered by the appended claims.

Claims

1. A machine for cleaning lenses, wherein the lens (L) is, for example, an eyeglass lens, and the machine (1) comprises: a handling unit (2) for carrying and transferring the lens (L) to be cleaned along a processing path (P), at least one processing unit (3, 4, 5) having a processing chamber (30, 40, 50) for processing the lens (L) carried by the handling unit (2) at a processing position (W) along the processing path (P), wherein the at least one processing unit (3, 4, 5) includes a cleaning unit (3, 4, 5) having a cleaning chamber (30, 40, 50) as the processing chamber (30, 40, 50) for cleaning the lens (L) carried by the handling unit (2), wherein the at least one processing unit (3, 4, 5) is arranged such that the at least one processing unit (3, 4, 5) can move between a retracted position and a receiving position along a movement path (M), in the retracted position, the lens (L) carried by the handling unit (2) can be transferred by the handling unit (2) along the complete processing path (P) outside the at least one processing unit (3, 4, 5) and relative to the at least one processing unit (3, 4, 5), in the receiving position, the lens (L) carried by the handling unit (2) at the processing position (W) is received in the processing chamber (30, 40, 50) to allow the lens (L) to be processed.

2. The machine according to claim 1, wherein, The handling unit (2) includes a conveyor (20) adapted to move along the processing path (P) in a conveying direction (C), wherein, preferably, the conveyor (20) is an endless conveyor (20) having a closed-loop processing path (P).

3. The machine according to any one of the preceding claims, wherein, The handling unit (2) includes at least one holding device (21) for gripping the lens (L), preferably, the at least one holding device (21) for gripping the lens (L) at a circumferential edge (E) of the lens (L) such that the lens (L) is carried while being transferred along the processing path (P) and processed in the processing chamber (30, 40, 50), wherein, preferably, the holding device (21) is connected to the conveyor (20) to move along the processing path (P), wherein, preferably, the holding device (21) protrudes towards the associated processing unit (3, 4, 5) at the processing position (W), preferably, the holding device (21) protrudes vertically downwards towards the associated processing unit (3, 4, 5) at the processing position (W), Preferably, the carrier device (21) is arranged to be movable at least at the processing position (W) to approach the relevant processing units (3, 4, 5), so that the lens (L) carried by the carrier device (21) enters the relevant processing chambers (30, 40, 50) of the processing units (3, 4, 5) in the receiving position.

4. The machine according to any one of the preceding claims, wherein, the movement path (M) is a translational movement path, and / or the movement path (M) extends substantially vertically.

5. The machine according to any one of the preceding claims, wherein, The cleaning unit includes a cleaning unit (3) for cleaning the lens (L), Preferably, the cleaning unit (3) includes a cleaning element (7) for chemically and / or mechanically cleaning the lens (L) in the cleaning chambers (30, 40, 50). Preferably, the cleaning element (7) includes a brushing device (70) for mechanically cleaning the lens (L) in the cleaning chambers (30, 40, 50). Preferably, the brushing device (70) includes a brush (71) rotatably arranged around a rotation axis (X) to clean the lens surface (S) of the lens (L) located at the cleaning area (A) in the cleaning chambers (30, 40, 50). Preferably, the rotation axis (X) can be tilted around an inclination axis (Y) to change the direction of the brush (71) relative to the cleaning area (A). Preferably, the inclination axis (Y) is oriented orthogonally to the rotation axis (X).

6. The machine according to any one of the preceding claims, wherein, The machine (1) includes a plurality of the processing units (3, 4, 5), and each of the processing units (3, 4, 5) is movable between a relevant retracted position and a relevant receiving position. Preferably, the plurality of the processing units (3, 4, 5) are arranged in a row, and more preferably, the plurality of the processing units (3, 4, 5) are arranged side by side in a row. Preferably, the processing units (3, 4, 5) are arranged to move individually between their relevant retracted positions and receiving positions, or at least some or all of the processing units (3, 4, 5) are arranged to move together between the retracted position and the receiving position.

7. The machine according to the preceding claims, wherein, The plurality of the processing units (3, 4, 5) include a plurality of the cleaning units. Preferably, the plurality of cleaning units include the cleaning unit (3) or a plurality of the cleaning units (3), and preferably, the plurality of cleaning units further include: at least one rinsing unit (4) for rinsing the cleaned lens (L). Preferably, the rinsing unit (4) includes a rinsing element, such as a liquid nozzle, to apply a liquid jet to the lens (L), and / or At least one drying unit (5) for drying the cleaned lens (L), and preferably also for drying the rinsed lens (L). Preferably, the drying unit (5) includes a drying element, such as a drying nozzle, for applying a fluid jet to the lens (L). Preferably, the fluid jet is a gaseous fluid or an air jet.

8. The machine according to any one of the preceding two claims, Among them, The plurality of processing units (3, 4, 5) includes at least one inspection unit for inspecting the cleaned lens (L) at an inspection position which is a relevant processing position (W), and / or wherein at least one or more additional processing units (6) includes at least one inspection unit (60) for inspecting the cleaned lens (L) at an inspection position (I) along the processing path (P). Preferably, the inspection position (I) is downstream of the cleaning units (3, 4, 5). wherein preferably, the at least one inspection unit (60) includes at least one optical inspection unit (61) for optically inspecting the lens (L) and / or at least one appearance inspection unit (62) for inspecting the appearance of the lens (L).

9. The machine according to any one of the preceding claims, Among them, The at least one processing unit (3, 4, 5) or all of the plurality of processing units (3, 4, 5) are all arranged below the handling unit (2) or below the processing path (P) or at least below the relevant processing position (W), and / or wherein the receiving position is closer to the handling unit (2) than the retracted position. Preferably, the receiving position is closer to the relevant processing position (W) than the retracted position.

10. The machine according to any one of the preceding claims, wherein, The machine (1) further includes: A loading unit (80) for loading the lens (L) to be cleaned onto the handling unit (2). Preferably, if the conveyor (20) exists, the loading unit (80) is used to load the lens (L) to be cleaned onto the conveyor (20), or if the carrying device (21) exists, the loading unit (80) is used to load the lens (L) to be cleaned onto the carrying device (21). The loading unit (80) is positioned upstream of the at least one processing unit (3, 4, 5) along the processing path (P), and / or, Unloading unit (81), the unloading unit (81) is used to unload the cleaned lens (L) from the handling unit (2). Preferably, if the conveyor (20) exists, the unloading unit (81) is used to unload the cleaned lens (L) from the conveyor (20), or, if the carrying device (21) exists, the unloading unit (81) is used to unload the cleaned lens (L) from the carrying device (21). The unloading unit (81) is positioned downstream of the at least one processing unit (3, 4, 5) along the processing path (P), and preferably, if the additional processing unit (6) exists, the unloading unit (81) is also positioned downstream of the additional processing unit (6) along the processing path (P). Wherein preferably, the loading unit (80) and the unloading unit (81) are arranged in the same loading unit (8). The loading unit (80) and / or the unloading unit (81) respectively include a handling device (83), and the handling device (83) is used to transfer the lens (L) between the corresponding loading positions and the handling unit (2). Preferably, if the conveyor (20) exists, the handling device (83) is used to transfer the lens (L) between the corresponding loading positions and the conveyor (20), or, if the carrying device (21) exists, the handling device (83) is used to transfer the lens (L) between the corresponding loading positions and the carrying device (21).

11. The machine according to any one of the preceding claims, wherein, The machine (1) further includes a positioning unit (82), and the positioning unit (82) is used to orient the lens (L) to be cleaned before it is received by the handling unit (2). Wherein, preferably, the positioning unit (82) includes a handling device (83), a scanning unit (84) and a control unit (84). The handling device (83) is adapted to orient the lens (L), the scanning unit (84) is used to determine the actual orientation of the lens (L), and the control unit (84) is used to compare the actual orientation of the lens (L) with the determined processing orientation of the lens (L) and control the handling device (83) to transfer the lens (L) to the handling unit (2) so that the handling unit (2) can receive the lens (L) oriented in the processing orientation. and / or, The machine (1) further includes a cleaning liquid circulation system (9), and the cleaning liquid circulation system (9) has a reservoir (90) and a circulation path (91). The reservoir (90) is used to hold the cleaning liquid, and the circulation path (91) is used to transport the cleaning liquid to the corresponding cleaning chambers (30, 40, 50) for cleaning the lens (L). Preferably, the cleaning liquid circulation system (9) further has a recirculation path (92), and the recirculation path (92) is used to recirculate the used cleaning liquid from the corresponding cleaning chambers (30, 40, 50).

12. The machine according to any one of the preceding claims, wherein, The machine (1) further includes a main frame (10) that supports the handling unit (2) and the at least one processing unit (3, 4, 5), and / or, wherein the machine (1) is a stand-alone machine.

13. A method for cleaning a lens, the lens (L) being, for example, an eyeglass lens, the method comprising the following steps in a given order: a), providing a machine (1) according to any one of the preceding claims, b), receiving the lens (L) by the handling unit (2) to support the lens (L), c), transferring the lens (L) along the processing path (P) to the processing position (W) by the handling unit (2), d), moving the cleaning unit from the retracted position to the receiving position to receive the lens (L) in the cleaning chamber (30, 40, 50) at the processing position (W), e), cleaning the lens (L) in the cleaning chamber (30, 40, 50), f), moving the cleaning unit from the receiving position to the retracted position to release the lens (L) from the cleaning chamber (30, 40, 50) at the processing position (W), g), optionally, g1), transferring the lens (L) along the processing path (P) to another processing position (W) or the inspection position (I) by the handling unit (2), g2), optionally, moving the relevant processing unit (3, 4, 5) from the relevant retracted position to the relevant receiving position, preferably, moving another one of the cleaning units (30, 40, 50) or the inspection unit from the relevant retracted position to the relevant receiving position to receive the lens (L) in the relevant processing chamber (30, 40, 50) at another processing position (W), g3), processing the lens (L) in the relevant processing unit (3, 4, 5, 6), preferably, cleaning or inspecting the lens (L) in the relevant processing unit (3, 4, 5, 6), preferably, processing the lens (L) in the relevant processing chamber (30, 40, 50), preferably, cleaning or inspecting the lens (L) in the relevant processing chamber (30, 40, 50), g4), optionally, moving the relevant processing unit (3, 4, 5) from the relevant receiving position to the relevant retracted position to release the lens (L) from the relevant processing chamber (30, 40, 50) at the another processing position (W), g5), optionally, at least repeating steps g1) and g3), preferably, repeating steps g1) to g4), preferably, at least repeating steps g1) and g3) according to the number of processing units (3, 4, 5, 6) arranged continuously along the processing path (P), preferably, repeating steps g1) to g4) according to the number of processing units (3, 4, 5, 6) arranged continuously along the processing path (P), h), releasing the lens (L) from the handling unit (2).

14. An independent machine for cleaning lenses, where the lens (L) is, for example, an eyeglass lens, and the independent machine (1) includes: a handling unit (2) configured to carry and transfer the lens (L) to be cleaned along a processing path (P), a cleaning unit having a cleaning chamber (30, 40, 50) for cleaning the lens (L) carried by the handling unit (2) at a cleaning position (Wc) along the processing path (P), and an inspection unit (60) for inspecting the cleaned lens (L) carried by the handling unit (2) at an inspection position (I) downstream of the cleaning position (Wc) along the processing path (P).

15. A brushing device, the brushing device (70) being used for mechanically cleaning a lens (L), the lens (L) being, for example, an eyeglass lens, the brushing device (70) comprising a brush (71) rotatably arranged about a rotation axis (X) to clean a lens surface (S) of the lens (L) located in a cleaning area (A), wherein, The rotation axis (X) is capable of tilting about the tilt axis (Y) to change the orientation of the brush (71) relative to the cleaning area (A).

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