Lens ink coating method

Abstract

The invention relates to the technical field of lens ink coating, in particular to a lens ink coating method which comprises the following steps that A, a lens is placed in a clamping and shaping base after being dedusted; b, a visual camera, a main control system and a clamping and shaping seat are matched to adjust the lens to be concentric with the clamping and shaping seat; c, controlling a first ink coating head of the ink coating mechanism to coat the first ink coating area of the lens with ink to form a first ink coating layer, and performing photocuring treatment on the first ink coating layer; d, a second ink coating head conducts ink coating on a second ink coating area of the lens to form a second ink coating layer, and ink coating operation is completed; e, transferring the lens subjected to ink coating operation to a finished product disc; and F, the ink coating layer of the lens is detected through a detector, detected defective products are placed on a repair disc, and detected qualified products are stored in a temporary storage warehouse. The whole ink coating process comprises lens placement, ink coating, photo-curing treatment and transfer, automatic operation is achieved, manual intervention is reduced, the production efficiency is improved, and personal errors are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lens ink coating, and in particular to a lens ink coating method. Background Art

[0002] In the optical lens manufacturing industry, inking is one of the key links in lens surface treatment. The inking process is an important step in improving lens performance, improving visual effects and protecting the lens surface from wear.

[0003] Traditional lens ink coating process mostly adopts manual or semi-automatic methods. The lens ink coating process still relies on manual operation, which not only has low production efficiency, but is also easily affected by human factors, resulting in unstable ink coating quality. Therefore, it is necessary to improve it. Summary of the invention

[0004] The purpose of the present invention is to provide a lens inking method in view of the deficiencies in the prior art. The entire inking process, including lens placement, inking, photocuring treatment and transfer, is automated, reducing manual intervention, improving production efficiency, reducing human errors, and improving inking quality.

[0005] To achieve the above object, a method for coating ink on a lens of the present invention comprises the following steps:

[0006] A. After removing dust from the lens on the treatment plate, place it in the clamping and shaping seat;

[0007] B. Adjust the lens to be concentric with the clamping and shaping seat through the coordination of the visual camera, the main control system and the clamping and shaping seat;

[0008] C. Control the first ink coating head of the ink coating mechanism to approach the lens and align it with the first ink coating area of ​​the lens, hold the shaping seat to drive the lens to rotate, and the first ink coating head applies ink to the first ink coating area of ​​the lens to form a first ink coating layer in the first ink coating area, control the first ink coating head to move away from the lens, hold the shaping seat to keep driving the lens to rotate, and perform photocuring on the first ink coating layer;

[0009] D. After the first ink coating layer of the lens is photocured, the second ink coating head of the ink coating mechanism is controlled to approach the lens and align with the second ink coating area of ​​the lens, and the second ink coating head applies ink to the second ink coating area of ​​the lens. After the ink coating operation of the second ink coating area of ​​the lens is completed to form a second ink coating layer, the second ink coating head continues to apply ink to the first ink coating area, so that the second ink coating layer extends and covers the upper part of the first ink coating layer. The second ink coating head is controlled to be away from the lens, and the clamping shaping seat drives the lens to stop rotating, so that the lens completes the ink coating operation;

[0010] E. Transferring the inked lenses to the finished product tray;

[0011] F. Use the detector to inspect the ink coating layer of the lens, place the defective products on the repair tray, and store the qualified products in the temporary storage.

[0012] Beneficial effects of the present invention: The present invention ensures the stability and accurate positioning of the lens during the ink coating process through the precise coordination of the visual camera, the main control system and the clamping and shaping seat, thereby greatly improving the ink coating accuracy and the uniformity of the ink coating layer, reducing the ink coating quality problems caused by position offset, and improving the ink coating accuracy and uniformity.

[0013] The entire inking process is highly automated. From lens dust removal, placement, inking, light curing to finished product transfer and inspection, there is no need for a lot of manual intervention, which significantly improves production efficiency, reduces labor costs, realizes automated production and improves efficiency.

[0014] The inking mechanism designed in the patent has a first inking head and a second inking head, which can successively apply ink to different areas of the lens and realize the superposition and coverage of the ink layers, providing the lens with more complex and diversified inking design possibilities, meeting the needs of different application scenarios, and realizing multi-area inking.

[0015] The use of a detector to perform immediate quality inspection on the inked lenses can quickly detect and isolate defective products, prevent defective products from flowing into subsequent processes, and ensure that qualified products are properly stored, which is beneficial to quality control and continuous improvement in the production process, so that the method of the present application can provide immediate quality inspection and feedback.

[0016] Due to the realization of automated production and instant quality inspection, manual operation and waiting time are reduced, thereby shortening the production cycle, reducing the additional costs caused by rework or re-production, and reducing production cycle and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the clamping and shaping seat of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the ink coating mechanism of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the first ink coating head of the present invention in a disassembled state.

[0021] Figure 5 It is a schematic diagram of the temporary storage structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the conveying mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the transmission mechanism structure of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the suction cup mechanism and the cleaning mechanism of the present invention.

[0025] Fig. 9 It is a schematic structural diagram of the air hood, the air blowing nozzle and the brush strip of the present invention.

[0026] Reference numerals include:

[0027] 101, tray to be processed; 102, finished product tray; 103, repair tray;

[0028] 1. Clamping and shaping seat; 11. Negative pressure suction table; 12. Rotation driver; 13. Adjustment clamp; 14. Adjustment driver;

[0029] 2. Ink coating mechanism; 21. First ink coating head; 22. Second ink coating head; 201. Housing; 2011. Ink guide hole; 2012. Ink guide groove; 202. Ink coating sponge; 2021. Groove; 203. Fixed sponge sleeve; 2031. Block; 204. Sponge threading needle; 23. First actuator; 24. Second actuator; 25. Third actuator; 26. Fourth actuator;

[0030] 3. Detector; 31. Detection camera; 32. Driving mechanical arm;

[0031] 4. Temporary storage; 41. Storage drive; 42. Storage rack; 421. Loading slot; 422. Limiting plate;

[0032] 5. Conveying mechanism; 51. Conveying driver; 52. Conveying carrier plate; 53. First conveying tray; 54. Second conveying tray;

[0033] 6. Conveying mechanism; 61. Conveying driver; 62. Suction cup mechanism; 621. Fixing rod; 622. Suction head; 63. Cleaning mechanism; 631. Vacuum pump; 632. Air pump driver; 633. Air hood; 6331. Upper hood body; 6332. Middle hood body; 6333. Lower hood body; 6334. Sealing edge; 634. Blowing nozzle; 6341. First blowing nozzle; 6342. Second blowing nozzle; 635. Brush strip; 6351. First brush strip; 6352. Second brush strip. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 9 As shown, a lens ink coating method of the present invention comprises the following steps:

[0036] A. After cleaning the dust from the lenses on the processing tray 101, place them in the clamping and shaping seat 1.

[0037] B. The lens is adjusted to be concentric with the clamping and shaping seat 1 through the cooperation of the visual camera, the main control system and the clamping and shaping seat 1.

[0038] C. Control the first ink coating head 21 of the ink coating mechanism 2 to approach the lens and align it with the first ink coating area of ​​the lens, clamp the shaping seat 1 to drive the lens to rotate, and the first ink coating head 21 inks the first ink coating area of ​​the lens to form a first ink coating layer in the first ink coating area, control the first ink coating head 21 to stay away from the lens, clamp the shaping seat 1 to keep driving the lens to rotate, and perform photocuring treatment on the first ink coating layer.

[0039] D. After the photocuring treatment of the first ink coating layer of the lens is completed, the second ink coating head 22 of the ink coating mechanism 2 is controlled to be close to the lens and aligned with the second ink coating area of ​​the lens. The second ink coating head 22 applies ink to the second ink coating area of ​​the lens. After the ink coating operation of the second ink coating area of ​​the lens is completed to form a second ink coating layer, the second ink coating head 22 continues to apply ink to the first ink coating area, so that the second ink coating layer extends and covers the upper part of the first ink coating layer. The second ink coating head 22 is controlled to be away from the lens, and the clamping shaping seat 1 drives the lens to stop rotating, so that the lens completes the ink coating operation.

[0040] E. Transferring the inked lenses to the finished product tray 102.

[0041] F. The ink coating layer of the lens is inspected by the detector 3 , and defective products are placed on the rework tray 103 , while qualified products are stored in the temporary storage 4 .

[0042] Through the precise coordination of the visual camera, the main control system and the clamping shaping seat 1, the stability and accurate positioning of the lens during the ink coating process are ensured, thereby greatly improving the ink coating accuracy and the uniformity of the ink coating layer, reducing the ink coating quality problems caused by position offset, and improving the ink coating accuracy and uniformity.

[0043] The entire inking process is highly automated. From lens dust removal, placement, inking, light curing to finished product transfer and inspection, there is no need for a lot of manual intervention, which significantly improves production efficiency, reduces labor costs, realizes automated production and improves efficiency.

[0044] The inking mechanism 2 designed in the patent has a first ink coating head 21 and a second ink coating head 22, which can successively apply ink to different areas of the lens and realize the superposition and covering of ink coating layers, providing the lens with more complex and diversified ink coating design possibilities, meeting the needs of different application scenarios, and realizing multi-area inking.

[0045] The use of the detector 3 to perform real-time quality inspection on the inked lenses can quickly detect and isolate defective products, prevent defective products from flowing into subsequent processes, and ensure that qualified products are properly stored, which is beneficial to quality control and continuous improvement in the production process, so that the method of the present application can provide real-time quality inspection and feedback.

[0046] Due to the realization of automated production and instant quality inspection, manual operation and waiting time are reduced, thereby shortening the production cycle, reducing the additional costs caused by rework or re-production, and reducing production cycle and cost.

[0047] like Figure 1 and Figure 6 As shown, in this embodiment, the tray to be processed 101 or the finished product tray 102 is transported by the transport mechanism 5, so that the tray to be processed 101 and the finished product tray 102 are horizontally aligned with the clamping and shaping seat 1, so as to facilitate the transmission of the lens between the tray to be processed 101, the finished product tray 102 and the clamping and shaping seat 1. The automatic transmission of the tray to be processed 101 and the finished product tray 102 is realized, making the transmission of the lens between the tray to be processed 101, the finished product tray 102 and the clamping and shaping seat 1 more efficient and flexible. This reduces the need for manual handling, shortens the production cycle, and improves the overall production efficiency.

[0048] The conveying mechanism 5 includes a conveying driver 51, a conveying carrier plate 52, a first conveying plate 53 and a second conveying plate 54, wherein the conveying driver 51 is a linear motion conveying mechanism, such as a linear drive cylinder module. The linear driver directly converts power into linear motion without the need for an additional transmission device, and thus has the advantages of simple structure and high efficiency.

[0049] The conveying driver 51 drives the conveying carrier plate 52 to move.

[0050] The first conveying tray 53 and the second conveying tray 54 are both used to place the trays to be processed 101 or the finished product trays 102 .

[0051] The first conveyor tray 53 and the second conveyor tray 54 are horizontally and symmetrically placed at both ends of the conveyor carrier plate 52. This layout is not only compact, but also optimizes the space utilization of the production line, making the entire production area more tidy and orderly, and optimizing space utilization.

[0052] The automated operation of the conveying mechanism 5 simplifies the lens conveying steps in the production process, reduces the burden on operators, reduces the risk of human error, improves the stability and reliability of the production line, and simplifies the operating process.

[0053] The design of the conveying mechanism enables it to flexibly adapt to different sizes and types of unprocessed trays 101 and finished product trays 102, thereby enhancing the versatility and adaptability of the production line and facilitating enterprises to cope with diverse production needs.

[0054] As a part of the automation transformation of the production line, the introduction of the conveying mechanism 5 further improves the overall automation level of the production line.

[0055] Specifically, the first conveying tray 53 and the second conveying tray 54 are both fixed to the conveying supporting plate 52 by means of limiting columns and limiting holes.

[0056] like Figure 1 and Figure 5 As shown, the temporary storage 4 of this embodiment includes a storage driver 41 and a storage rack 42, wherein the storage driver 41 is an electric push rod or a linear driver, which is a device that converts the rotational motion of the motor into a linear motion. They can directly drive the storage rack to move up and down along the guide rail without the need for an additional transmission mechanism, so the structure is compact and the response is fast. This device is particularly suitable for occasions where precise control of position or speed is required.

[0057] The storage driver 41 drives the storage rack 42 to move up and down.

[0058] The storage rack 42 is provided with a plurality of bearing slots 421 for placing the first conveyor tray 53 or the second conveyor tray 54, and both ends of the storage rack 42 are provided with limit plates 422. The limit plates 422 can prevent the storage rack 42 from excessively moving during the lifting process, thereby protecting the lenses stored in the temporary storage 4 from being damaged due to accidental collision. At the same time, it also helps to maintain the stability of the storage rack 42.

[0059] When in use, the lenses on the tray 101 to be processed are placed on the finished product tray 102 after the lens is coated with ink by the clamping shaping seat 1 and the ink coating mechanism 2. The empty tray 101 to be processed is placed on the first conveying tray 53, and the finished product tray 102 is placed on the second conveying tray 54. The storage drive 41 drives the storage rack 42 to rise or fall, so that the bearing slot 421 is aligned with the first conveying tray 53 and the second conveying tray 54. The conveying drive 51 drives the conveying carrier plate 52 to move, so that the tray 101 to be processed placed on the first conveying tray 53 and the finished product tray 102 placed on the second conveying tray 54 enter the storage rack 42 together, and the storage drive 41 drives the storage rack 42 to rise, so that the first conveying tray 53 and the second conveying tray 54 are carried in the bearing slot 421 and separated from the conveying carrier plate 52. The conveyor driver 51 drives the conveyor carrier plate 52 to exit the storage rack 42 , so that the first conveyor tray 53 , the second conveyor tray 54 , the tray to be processed 101 and the finished product tray 102 are stored in the storage rack 42 , that is, the lenses that have been inked are stored in the temporary storage 4 .

[0060] like Figure 1 and Figure 7As shown, in this embodiment, the lens is transferred to the processing tray 101, the finished product tray 102 and the clamping and shaping seat 1 through the conveying mechanism 6, and the lens on the processing tray 101 is dusted. The conveying mechanism 6 can automatically transfer the lens from the processing tray 101 to the clamping and shaping seat 1 and the finished product tray 102, which significantly improves the efficiency of lens processing.

[0061] The conveying mechanism 6 includes a conveying driver 61 , a suction cup mechanism 62 and a cleaning mechanism 63 . The conveying driver 61 drives the suction cup mechanism 62 and the cleaning mechanism 63 to move.

[0062] The transmission driver 61 is a conventional XY axis mechanism arm, which is a mechanical device that can accurately position and move in a two-dimensional plane, i.e., a plane formed by an X axis and a Y axis, and is commonly used in the fields of automated production, robotics, precision machining, experimental equipment, and testing systems. This mechanism arm is composed of driving mechanisms in two directions, the X axis and the Y axis, and can realize independent or combined movement in these two directions, thereby reaching any position in the plane.

[0063] like Figures 8 to 9 As shown, the suction cup mechanism 62 includes a fixing rod 621 and a suction head 622 . The fixing rod 621 is fixed to the transmission driver 61 , and the suction head 622 is fixed to the end of the fixing rod 621 .

[0064] The suction head 622 is a vacuum pump suction cup or an airflow negative pressure suction cup. The vacuum pump suction cup is the most common type, which uses a vacuum pump to extract air from the suction cup to form a low-pressure environment, thereby generating adsorption force. This type of suction cup is usually used in situations where stable adsorption is required.

[0065] The airflow negative pressure suction cup is a suction cup that uses the negative pressure generated by the airflow to work, and controls the valve through the airflow to achieve the suction and release of objects, which is suitable for occasions that require frequent suction and release. In this embodiment, the suction head 622 is used as an example of the airflow negative pressure suction cup.

[0066] The cleaning mechanism 63 includes a vacuum cylinder 631, a cylinder driver 632, an air hood 633, an air blowing nozzle 634 and a brush strip 635. The sliding sleeve of the vacuum cylinder 631 is set on the fixed rod 621, the cylinder driver 632 is fixed to the fixed rod 621 and drives the vacuum cylinder 631 to move closer to or away from the suction head 622, the air hood 633 is set at one end of the air cylinder facing the suction head 622, the air blowing nozzle 634 is fixed to the air hood 633 and blows air into the air hood 633, and the brush strip 635 is set inside the air hood 633.

[0067] The cylinder driver 632 is a linear driver, such as a conventional air cylinder or oil cylinder.

[0068] Working method of the transmission mechanism 6:

[0069] A1. The transmission driver 61 drives the fixed rod 621 to move and drives the suction head 622 and the cleaning mechanism 63 to move.

[0070] A2. When the suction head 622 moves to the position directly above the lens on the tray 101 to be processed, the transmission driver 61 drives the fixing rod 621, the suction head 622 and the cleaning mechanism 63 to approach the lens. The cleaning mechanism 63 drives the vacuum pump 631 to approach the suction head 622 through the air cylinder driver 632. When the suction head 622 is suspended above the lens and the air cover 633 is covered on the lens and contacts the tray 101 to be processed, the transmission driver 61 and the air cylinder driver 632 are both stopped.

[0071] A3. Control the blowing nozzle 634 to blow air into the air hood 633, so that the brush bar 635 inside the air hood 633 swings to clean the surface of the lens and the suction head 622, and the vacuum cylinder 631 sucks air to suck away the air inside the air hood 633, so that the lens and the suction head 622 are dust-removed.

[0072] A4. After the lens is dusted, the cleaning mechanism 63 drives the vacuum cylinder 631 away from the suction head 622 through the cylinder driver 632, and the transmission driver 61 drives the fixing rod 621 to continue to approach the lens so that the suction head 622 can adsorb the lens.

[0073] A5. The transmission driver 61 drives the fixed rod 621 to move to the position just above the clamping and shaping seat 1, so that the suction head 622 adsorbs the lens and moves together to the position just above the clamping and shaping seat 1. The transmission driver 61 drives the fixed rod 621 to approach the clamping and shaping seat 1, and the suction head 622 adsorbs the lens and releases the lens to the clamping and shaping seat 1. After the dust removal of the lens on the processing tray 101 is completed, it is placed in the clamping and shaping seat 1 for operation.

[0074] By blowing air into the air hood 633 through the air blowing nozzle 634, the brush bar 635 is swung, which can effectively clean the surface of the lens and the suction head 622, thereby ensuring the quality of the lens in subsequent processing.

[0075] The coordinated operation of the transmission driver 61 and the cylinder driver 632 realizes the precise displacement of the suction cup mechanism 62 and the cleaning mechanism 63 and the operation of approaching / moving away from the lens, thereby increasing the flexibility and operational accuracy of the device.

[0076] The suction cup mechanism 62 and the cleaning mechanism 63 are integrated on the fixing rod 621, which reduces the complexity and space occupied by the equipment, while improving the overall performance and reliability of the equipment.

[0077] Through automated and integrated design, the operational process of lens dust removal and transfer is simplified, reducing the difficulty and cost of manual operation.

[0078] The conveying mechanism 6 can adapt to the processing requirements of lenses of different sizes and types by simply adjusting relevant parameters, thereby enhancing the versatility and applicability of the equipment.

[0079] like Fig. 9 As shown, the air hood 633 of this embodiment includes an upper hood body 6331, a middle hood body 6332 and a lower hood body 6333, the brush strip 635 includes a first brush strip 6351 and a second brush strip 6352, and the air blowing nozzle 634 includes a first air blowing nozzle 6341 and a second air blowing nozzle 6342.

[0080] The air hood 633 is designed to include an upper hood 6331, a middle hood 6332 and a lower hood 6333. This modular design facilitates assembly, disassembly and maintenance. The air hood 633 is divided into three different functional areas: the upper hood 6331 corresponds to the suction head 622 as a suction head cleaning area, the middle hood 6332 as a spacing area, and the lower hood 6333 corresponds to the lens as a lens cleaning area.

[0081] The first brush bar 6351 is fixed to the upper cover 6331 for cleaning the suction head 622, and the second brush bar 6352 is fixed to the lower cover 6333 for cleaning the lens. By providing the first brush bar 6351 and the second brush bar 6352, which are used to clean the suction head 622 and the lens respectively, targeted cleaning of different parts is achieved, and the cleaning efficiency and effect are improved. Avoid the first brush bar 6351 for cleaning the suction head 622 and the second brush bar 6352 for cleaning the lens being used crosswise.

[0082] The first air blowing nozzle 6341 is disposed at the middle cover body 6332 and blows air toward the upper cover body 6331, and the second air blowing nozzle 6342 is disposed at the middle cover body 6332 and blows air toward the lower cover body 6333. The first air blowing nozzle 6341 and the second air blowing nozzle 6342 are disposed to blow air toward the upper cover body and the lower cover body, respectively, so as to respectively swing the first brush bar 6351 and the second brush bar 6352 to achieve the cleaning effect of the brush bar 635, and at the same time further remove dirt and residues through the airflow, thereby enhancing the cleaning ability.

[0083] The end of the lower cover body 6333 is provided with a sealing edge 6334, and the cross section of the sealing edge 6334 is A-shaped, n-shaped or W-shaped. The end of the lower cover body 6333 is provided with a sealing edge 6334, and the cross section of the sealing edge is A-shaped, n-shaped or W-shaped. This design improves the sealing performance of the contact part between the gas cover 633 and the disk to be processed 101, prevents the leakage of gas or dirt, and ensures the stability and effectiveness of the cleaning process. In this embodiment, the cross section of the sealing edge 6334 is A-shaped as an example.

[0084] like Figure 1 and Figure 2As shown, the clamping and shaping seat 1 of this embodiment includes a negative pressure suction table 11, a rotation driver 12, an adjustment clamp 13 and an adjustment driver 14, and the negative pressure suction table 11, the rotation driver 12 and the adjustment driver 14 are all electrically connected to the main control system.

[0085] The negative pressure suction table 11 is used to fix the lens.

[0086] The rotary driver 12 drives the negative pressure suction table 11 to rotate.

[0087] There are two adjustment clips 13 , and the two adjustment clips 13 are respectively disposed on two sides of the negative pressure suction platform 11 .

[0088] The adjustment driver 14 drives the two adjustment clamps 13 to move closer to or farther from the negative pressure suction platform 11 at the same time.

[0089] The negative pressure suction table 11 is provided with a first suction force and a second suction force for adsorbing the lens. The friction force generated when the negative pressure suction table 11 adsorbs the lens with the first suction force is F1, and the friction force generated when the negative pressure suction table 11 adsorbs the lens with the second suction force is F2. The force of the adjustment driver 14 driving the two adjustment clips 13 to simultaneously approach or move away from the negative pressure suction table 11 is T, and F2>T>F1, so that when the negative pressure suction table 11 adsorbs the lens with the first suction force, the adjustment driver 14 drives the two adjustment clips 13 to simultaneously approach the negative pressure suction table 11 to push the lens to move.

[0090] The rotary driver 12 is a reduction motor, and the rotary driver 12 drives the negative pressure suction table 11 to rotate through a transmission member, such as a synchronous pulley and a synchronous belt. In other embodiments, the rotary driver 12 can also drive the negative pressure suction table 11 to rotate through a transmission shaft. The adjustment driver 14 is a linear driver, such as a conventional cylinder drive module or an oil cylinder drive module.

[0091] By setting the first suction force and the second suction force of the negative pressure suction table 11, the lens can be stably fixed to ensure that the lens will not move or fall off during the shaping or processing process.

[0092] Working method of clamping shaping seat 1:

[0093] B1. The lens is placed on the negative pressure suction table 11. The negative pressure suction table 11 absorbs the lens with a first suction force and executes B2.

[0094] B2. The visual camera obtains an image of the position of the lens and the negative pressure suction table 11 and feeds it back to the main control system. The main control system determines whether the lens and the negative pressure suction table 11 are concentric based on the position of the lens and the negative pressure suction table 11 in the image. Otherwise, execute B3. If yes, control the negative pressure suction table 11 to adsorb the lens with the second suction force.

[0095] B3. The adjustment driver 14 drives the two adjustment clamps 13 to approach the negative pressure suction table 11 at the same time and push the lens to move, and execute B2, thereby repeatedly adjusting the lens to be concentric with the clamping shaping seat 1.

[0096] The main control system can automatically determine whether the lens and the negative pressure suction table are concentric by obtaining image feedback of the position of the lens and the negative pressure suction table 11 through the visual camera. This function improves the accuracy and efficiency of lens processing and reduces the need for manual adjustment.

[0097] When the lens is not concentric with the negative pressure suction table, the adjustment driver 14 can drive the two adjustment clamps 13 to approach the negative pressure suction table 11 at the same time and push the lens to move, thereby accurately adjusting the position of the lens to make it concentric with the clamping shaping seat 1. This adjustment method is both accurate and efficient.

[0098] The negative pressure suction table 11 is provided with a first suction force and a second suction force, and an appropriate suction force can be selected to absorb the lens as needed. Under the first suction force, the lens can be stably absorbed but can also be pushed by the adjustment clamp 13; under the second suction force, the lens is more firmly fixed, suitable for subsequent processing or treatment steps.

[0099] Through automation and precise adjustment, the clamping and shaping seat 1 can significantly improve the processing quality and efficiency of the lens and reduce the scrap rate and production cost.

[0100] like Figure 2 As shown, the negative pressure suction table 11 of this embodiment is provided with a negative pressure suction pipe 111 and a guide sleeve 112. The negative pressure suction pipe 111 extends out of the negative pressure suction table 11, and the guide sleeve 112 is fixed to the end of the negative pressure suction pipe 111. The guide sleeve 112 is provided with an air hole connected to the negative pressure suction pipe 111. The negative pressure suction pipe 111 passes through the guide sleeve 112 through the air hole to adsorb the lens.

[0101] The guide sleeve 112 is made of a polymer material, such as polytetrafluoroethylene PTFE, nylon or polyimide PI. In this embodiment, the guide sleeve 112 is made of polytetrafluoroethylene PTFE.

[0102] The negative pressure suction table 11 can more stably adsorb the lens through the arrangement of the negative pressure suction pipe 111 and the guide sleeve 112. The negative pressure suction pipe 111 extends from the negative pressure suction table 11 and directly acts on the surface of the lens, while the guide sleeve 112 plays a role of fixing and guiding, ensuring that the negative pressure suction pipe 111 can accurately align with the lens, thereby improving the accuracy and stability of adsorption.

[0103] The air holes on the guide sleeve 112 are connected to the negative pressure suction pipe 111, so that the negative pressure can be more effectively transmitted to the lens surface. This design increases the adsorption area, improves the adsorption efficiency, and allows the lens to be fixed more quickly.

[0104] The setting of the guide sleeve 112 also plays a role in protecting the lens. During the adsorption process, the guide sleeve 112 can buffer the direct impact of the negative pressure suction tube 111 on the lens, preventing the lens from being damaged due to uneven force. At the same time, the material and design of the guide sleeve 112 can also reduce friction with the lens surface, further protecting the lens.

[0105] Since the guide sleeve 112 has certain flexibility and adaptability, it can be fine-tuned according to the shape and size of the lens, thereby ensuring that the negative pressure suction tube 111 can closely fit the lens surface. This design enables the negative pressure suction table 11 to be applicable to lenses of different shapes and sizes, thereby improving its versatility and practicality.

[0106] The combined use of the negative pressure suction table 11, the negative pressure suction pipe 111, and the guide sleeve 112 simplifies the lens adsorption operation process. The operator only needs to align the negative pressure suction table 11 with the lens and start the negative pressure system to achieve rapid fixation of the lens. This design improves work efficiency and reduces operational difficulty.

[0107] like Figure 1 and Figure 3 As shown, the ink coating mechanism 2 of this embodiment includes a first actuator 23, a second actuator 24, a third actuator 25 and a fourth actuator 26. The first actuator 23 drives the second actuator 24 to rise and fall along the Y-axis, the second actuator 24 drives the third actuator 25 to translate along the X-axis, the third actuator 25 drives the fourth actuator 26 to rotate, the first ink coating head 21 and the second ink coating head 22 are respectively staggered on the fourth actuator 26, and the fourth actuator 26 drives the first ink coating head 21 and the second ink coating head 22 to shift.

[0108] The first actuator 23 and the second actuator 24 are both linear actuators, such as conventional air cylinders and oil cylinders, and the third actuator 25 is a motor.

[0109] The fourth actuator 26 includes a fixed frame, a motor, a first driving wheel, a second driving wheel and a synchronous belt. The first driving wheel and the second driving wheel are respectively arranged at the two ends of the fixed frame. The synchronous belt is arranged between the first driving wheel and the second driving wheel to form an upper conveying part and a lower conveying part. The first ink coating head 21 is arranged at the upper conveying part, and the second ink coating head 22 is arranged at the lower conveying part. The first ink coating head 21 and the second ink coating head 22 are arranged in a staggered manner. When in use, the motor drives the first driving wheel to rotate, so that the second driving wheel and the synchronous belt are linked to each other, so that the first ink coating head 21 and the second ink coating head 22 are displaced, and the fourth actuator 26 drives the first ink coating head 21 and the second ink coating head 22 to displace. The flexibility and coverage of ink coating are increased.

[0110] like Figure 4As shown, the first ink coating head 21 and the second ink coating head 22 each include a shell 201, ink coating cotton 202, a fixed cotton sleeve 203 and a cotton threading needle 204. One end of the shell 201 is provided with an ink guide hole 2011 for introducing ink, and the other end of the shell 201 is provided with an ink guide groove 2012 for exporting ink. The ink guide hole 2011 is connected with the ink guide groove 2012, which ensures the smooth flow and uniform distribution of the ink and improves the quality and stability of ink coating.

[0111] The ink-spreading sponge 202 is fixed to the fixed sponge sleeve 203. The fixed sponge sleeve 203 is arranged in the ink guide groove 2012, and the ink-spreading sponge 202 is connected to the housing 201 through the fixed sponge sleeve 203. When in use, black water enters the ink guide groove 2012 through the ink guide hole 2011, so that the ink penetrates into the ink-spreading sponge 202, which is convenient for ink-spreading the lens through the ink-spreading sponge 202, and this fixing method is both stable and easy to replace. When the ink-spreading sponge is worn or needs to be replaced, the fixed sponge sleeve 203 and the ink-spreading sponge 202 can be easily disassembled, reducing maintenance costs and operating difficulties.

[0112] The threading needle 204 penetrates the ink-coated sponge 202 and is fixed to the fixed sponge sleeve 203. The design that the threading needle 204 penetrates the ink-coated sponge 202 helps to maintain the flatness and stability of the ink-coated sponge 202, prevents it from deforming or shifting during the ink coating process, and thus further improves the quality and uniformity of the ink coating.

[0113] The ink coating mechanism 2 of this embodiment also includes a first ink feeder and a second ink feeder, the first ink feeder is connected to the ink guide hole 2011 of the first ink coating head 21 through a pipeline, the second ink feeder is connected to the ink guide hole 2011 of the second ink coating head 22 through a pipeline, and the first ink feeder and the second ink feeder are respectively connected to the first ink coating head 21 and the second ink coating head 22 through pipelines. This modular design allows the ink feeding and ink coating functions to be performed independently, which is convenient for maintenance and replacement of parts. By providing ink to the ink coating head through an independent ink feeder, the ink flow rate of each ink coating head can be accurately controlled, thereby improving the uniformity and accuracy of ink coating.

[0114] The ink-spreading sponge 202 is provided with a groove 2021, and the fixed sponge sleeve 203 is provided with a block 2031 corresponding to the groove 2021. The sponge threading needle 204 penetrates the groove 2021 of the ink-spreading sponge 202 and is connected with the block 2031 of the fixed sponge sleeve 203. The ink-spreading sponge can be firmly installed on the fixed sponge sleeve to prevent movement or deformation during the ink-spreading process. When the ink-spreading sponge needs to be replaced, the ink-spreading sponge 202 can be easily removed from the fixed sponge sleeve 203 by removing the sponge threading needle 204, thereby improving the maintenance efficiency and convenience of the equipment.

[0115] like Figure 1As shown, the detector 3 of this embodiment includes a detection camera 31 and a driving robotic arm 32 for driving the displacement of the detection camera 31, and the detection camera 31 and the driving robotic arm 32 are both electrically connected to the main control system, wherein the detection camera 31 is an industrial camera and the driving robotic arm 32 is a multi-axis robotic arm.

[0116] Working method of detector 3:

[0117] F1. Drive the robot arm 32 to drive the inspection camera 31 to obtain an image of a lens that has completed the inking operation and feed it back to the main control system. The main control system compares the image of the lens with a preset standard image to determine whether the appearance of the inked lens is similar to that of the standard image. If so, execute F2; otherwise, control the driving robot arm 32 to clamp the inspected lens and place it on the rework tray 103.

[0118] F2. The main control system evaluates the uniformity of the lens ink coating based on the variance value FVariance of the pixels in the ink coating area in the lens image. The calculation formula of the variance value FVariance is:

[0119] Where N is the total number of pixels in the inked area, i is an integer from 1 to N, used to identify each pixel in the inked area, Gi is the gray value of the i-th pixel, and G2 is the average gray value of all pixels in the inked area; when the variance value is within the preset range, it is judged as a good product;

[0120] F3. Drive the robot arm 32 to drive the detection camera 31 to obtain an image of another lens that has completed the inking operation and feed it back to the main control system, so as to repeat the inspection of the inking quality of the lens.

[0121] By driving the mechanical arm 32 to drive the detection camera 31 to automatically obtain the image of the lens, automatic detection of the appearance and ink coating uniformity of the ink-coated lens is achieved, thereby improving the detection efficiency and accuracy.

[0122] As an industrial camera, the detection camera 31 has the characteristics of high resolution and high sensitivity, which can capture the subtle differences of the lens and ensure the accuracy of the detection.

[0123] By comparing the lens image with a preset standard image, the main control system can intelligently determine whether the appearance of the lens is similar to the standard image, reducing errors in human judgment.

[0124] The uniformity of the ink coating on the lens is evaluated by calculating the variance value FVariance of the pixels in the ink coating area, which provides an objective and quantitative evaluation method and avoids the arbitrariness and inconsistency of subjective judgment.

[0125] According to the detection results, the main control system can automatically determine whether the lens is a good product, and place the unqualified lens on the repair tray 103 by driving the mechanical arm 32 to clamp it, thereby realizing the screening of good products and timely repair guidance of unqualified products.

[0126] The detector 3 can continuously detect a plurality of lenses that have completed the inking operation, thereby improving the detection efficiency and throughput of the production line.

[0127] The design of the detector has certain flexibility and can be adjusted and optimized according to different inking requirements and testing standards, and is suitable for a variety of inked lens testing scenarios.

[0128] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A method for coating ink on a lens, characterized in that: The steps include: A. After removing dust from the lenses on the treatment plate (101), the lenses are placed in the clamping and shaping seat (1); B. adjusting the lens to be concentric with the clamping and shaping seat (1) by cooperating with the visual camera, the main control system and the clamping and shaping seat (1); C. Controlling the first ink coating head (21) of the ink coating mechanism (2) to approach the lens and align with the first ink coating area of ​​the lens, holding the shaping seat (1) to drive the lens to rotate, the first ink coating head (21) to ink the first ink coating area of ​​the lens, so that the first ink coating area forms a first ink coating layer, controlling the first ink coating head (21) to move away from the lens, holding the shaping seat (1) to keep driving the lens to rotate, and performing a photocuring process on the first ink coating layer; D. After the photocuring treatment of the first ink coating layer of the lens is completed, the second ink coating head (22) of the ink coating mechanism (2) is controlled to approach the lens and align with the second ink coating area of ​​the lens, and the second ink coating head (22) applies ink to the second ink coating area of ​​the lens. After the ink coating operation of the second ink coating area of ​​the lens is completed to form a second ink coating layer, the second ink coating head (22) continues to apply ink to the first ink coating area, so that the second ink coating layer extends and covers the upper part of the first ink coating layer. The second ink coating head (22) is controlled to move away from the lens, and the clamping shaping seat (1) drives the lens to stop rotating, so that the lens completes the ink coating operation; E. Transferring the inked lenses to the finished product tray (102); F. The ink coating layer of the lens is inspected by a detector (3), and defective products are placed on a repair tray (103), while qualified products are stored in a temporary storage warehouse (4).

2. A method for coating ink on a lens according to claim 1, characterized in that: The to-be-processed tray (101) or the finished product tray (102) is transported by a transport mechanism (5) so that the to-be-processed tray and the finished product tray (102) are horizontally aligned with the clamping and shaping seat (1), so as to facilitate the transport of the lens between the to-be-processed tray, the finished product tray (102) and the clamping and shaping seat (1); The conveying mechanism (5) comprises a conveying driver (51), a conveying carrier plate (52), a first conveying tray (53) and a second conveying tray (54); The conveying driver (51) drives the conveying carrier plate (52) to move; The first conveying tray (53) and the second conveying tray (54) are both used to place the tray to be processed (101) or the finished product tray (102); The first conveying tray (53) and the second conveying tray (54) are respectively placed horizontally and symmetrically at two ends of the conveying carrier plate (52).

3. A method for coating ink on a lens according to claim 2, characterized in that: The temporary storage library (4) includes a storage drive (41) and a storage rack (42); The storage driver (41) drives the storage rack (42) to move up and down; The storage rack (42) is provided with a plurality of bearing slots (421) for placing the first conveying tray (53) or the second conveying tray (54) inside, and both ends of the storage rack (42) for lifting and lowering are provided with limit plates (422).

4. A method for coating ink on a lens according to claim 1, characterized in that: The lenses are transferred to a tray to be processed (101), a finished product tray (102) and a clamping and shaping seat (1) by a conveying mechanism (6), and dust removal is performed on the lenses on the tray to be processed (101); The conveying mechanism (6) comprises a conveying driver (61), a suction cup mechanism (62) and a cleaning mechanism (63), wherein the conveying driver (61) drives the suction cup mechanism (62) and the cleaning mechanism (63) to move; The suction cup mechanism (62) comprises a fixing rod (621) and a suction head (622), wherein the fixing rod (621) is fixed to the transmission driver (61), and the suction head (622) is fixed to the end of the fixing rod (621); The cleaning mechanism (63) comprises an air pump (631), an air pump driver (632), an air hood (633), an air blowing nozzle (634) and a brush strip (635); the air pump (631) sliding sleeve is arranged on the fixed rod (621); the air pump driver (632) is fixed on the fixed rod (621) and drives the air pump (631) to approach or move away from the suction head (622); the air hood (633) is arranged at one end of the air pump facing the suction head (622); the air blowing nozzle (634) is fixed on the air hood (633) and blows air into the air hood (633); and the brush strip (635) is arranged inside the air hood (633); Working method of the transmission mechanism (6): A1. The transmission driver (61) drives the fixed rod (621) to move and drives the suction head (622) and the cleaning mechanism (63) to move; A2. When the suction head (622) moves to the position directly above the lens on the tray (101) to be processed, the transmission driver (61) drives the fixing rod (621), the suction head (622) and the cleaning mechanism (63) to approach the lens, and the cleaning mechanism (63) drives the vacuum cylinder (631) to approach the suction head (622) through the cylinder driver (632). When the suction head (622) is suspended above the lens and the air cover (633) covers the lens and contacts the tray (101) to be processed, the transmission driver (61) and the cylinder driver (632) are both stopped; A3. Control the blowing nozzle (634) to blow air into the air hood (633), so that the brush strip (635) inside the air hood (633) swings to clean the surface of the lens and the suction head (622), and the air pump (631) sucks air to suck away the air inside the air hood (633), so that the lens and the suction head (622) are dust-free; A4. After the lens is dusted, the cleaning mechanism (63) drives the vacuum cylinder (631) away from the suction head (622) through the cylinder driver (632), and the transmission driver (61) drives the fixing rod (621) to continue to approach the lens, so that the suction head (622) can be used to absorb the lens; A5. The transmission driver (61) drives the fixed rod (621) to move to the top of the clamping and shaping seat (1), so that the suction head (622) adsorbs the lens and moves to the top of the clamping and shaping seat (1). The transmission driver (61) drives the fixed rod (621) to approach the clamping and shaping seat (1), and the suction head (622) adsorbs the lens and releases it to the clamping and shaping seat (1). After the dust removal of the lens on the processing plate (101) is completed, it is placed in the clamping and shaping seat (1) for operation.

5. A method for coating ink on a lens according to claim 4, characterized in that: The air hood (633) comprises an upper hood body (6331), a middle hood body (6332) and a lower hood body (6333); the brush strip (635) comprises a first brush strip (6351) and a second brush strip (6352); and the air blowing nozzle (634) comprises a first air blowing nozzle (6341) and a second air blowing nozzle (6342); The first brush strip (6351) is fixed to the upper cover (6331) and is used to clean the suction head (622); the second brush strip (6352) is fixed to the lower cover (6333) and is used to clean the lens; The first air blowing nozzle (6341) is arranged on the middle cover body (6332) and blows air toward the upper cover body (6331), and the second air blowing nozzle (6342) is arranged on the middle cover body (6332) and blows air toward the lower cover body (6333); The end of the lower cover body (6333) is provided with a sealing edge (6334), and the cross-section of the sealing edge (6334) is A-shaped, n-shaped or W-shaped.

6. A method for coating ink on a lens according to claim 1, characterized in that: The clamping and shaping seat (1) comprises a negative pressure suction table (11), a rotating driver (12), an adjustment clamp (13) and an adjustment driver (14); the negative pressure suction table (11), the rotating driver (12) and the adjustment driver (14) are all electrically connected to a main control system; The negative pressure suction table (11) is used to fix the lens; The rotary driver (12) drives the negative pressure suction platform (11) to rotate; The number of the adjustment clips (13) is two, and the two adjustment clips (13) are respectively arranged on both sides of the negative pressure suction platform (11); The adjustment driver (14) drives the two adjustment clamps (13) to simultaneously move closer to or farther from the negative pressure suction platform (11); The negative pressure suction table (11) is provided with a first suction force and a second suction force for adsorbing the lens, the friction force generated when the negative pressure suction table (11) adsorbs the lens with the first suction force is F1, the friction force generated when the negative pressure suction table (11) adsorbs the lens with the second suction force is F2, the force of the adjustment driver (14) driving the two adjustment clips (13) to simultaneously approach or move away from the negative pressure suction table (11) is T, and F2>T>F1, so that when the negative pressure suction table (11) adsorbs the lens with the first suction force, the adjustment driver (14) drives the two adjustment clips (13) to simultaneously approach the negative pressure suction table (11) to promote the displacement of the lens; Working method of clamping shaping seat (1): B1. The lens is placed on a negative pressure suction table (11), and the negative pressure suction table (11) adsorbs the lens with a first suction force, and executes B2; B2. The visual camera obtains an image of the position of the lens and the negative pressure suction table (11) and feeds it back to the main control system. The main control system determines whether the lens and the negative pressure suction table (11) are concentric according to the position of the lens and the negative pressure suction table (11) in the image. Otherwise, B3 is executed. If yes, the negative pressure suction table (11) is controlled to absorb the lens with a second suction force. B3. The adjustment driver (14) drives the two adjustment clamps (13) to approach the negative pressure suction table (11) at the same time and push the lens to move, and execute B2, thereby repeatedly adjusting the lens to be concentric with the clamping shaping seat (1).

7. A method for coating ink on a lens according to claim 6, characterized in that: The negative pressure suction table (11) is provided with a negative pressure suction pipe (111) and a guide sleeve (112); the negative pressure suction pipe (111) extends out of the negative pressure suction table (11); the guide sleeve (112) is fixed to the end of the negative pressure suction pipe (111); the guide sleeve (112) is provided with an air hole connected to the negative pressure suction pipe (111); the negative pressure suction pipe (111) passes through the guide sleeve (112) and adsorbs the lens through the air hole.

8. The method for coating ink on a lens according to claim 1, characterized in that: The ink coating mechanism (2) comprises a first actuator (23), a second actuator (24), a third actuator (25) and a fourth actuator (26); the first actuator (23) drives the second actuator (24) to move up and down along the Y axis; the second actuator (24) drives the third actuator (25) to move in translation along the X axis; the third actuator (25) drives the fourth actuator (26) to rotate; the first ink coating head (21) and the second ink coating head (22) are respectively arranged in a staggered manner on the fourth actuator (26); the fourth actuator (26) drives the first ink coating head (21) and the second ink coating head (22) to move in a staggered manner; The first ink coating head (21) and the second ink coating head (22) both comprise a housing (201), ink coating sponges (202), a fixed sponge sleeve (203) and a sponge threading needle (204); one end of the housing (201) is provided with an ink guide hole (2011) for introducing ink, and the other end of the housing (201) is provided with an ink guide groove (2012) for guiding ink; the ink guide hole (2011) is connected to the ink guide groove (2012); The ink-coating sponge (202) is fixed to the fixed sponge sleeve (203); The fixed cotton sleeve (203) is arranged on the ink guide groove (2012); The cotton threading needle (204) penetrates the ink-coated cotton (202) and is fixed to the fixed cotton sleeve (203).

9. A method for coating ink on a lens according to claim 8, characterized in that: The ink coating mechanism (2) further comprises a first ink feeder and a second ink feeder, wherein the first ink feeder is connected to the ink guide hole (2011) of the first ink coating head (21) via a pipeline, and the second ink feeder is connected to the ink guide hole (2011) of the second ink coating head (22) via a pipeline; The ink-coated cotton (202) is provided with a groove (2021), the fixed cotton sleeve (203) is provided with a block (2031) corresponding to the groove (2021), and the cotton threading needle (204) penetrates the groove (2021) of the ink-coated cotton (202) and is connected to the block (2031) of the fixed cotton sleeve (203).

10. The method for coating ink on a lens according to claim 1, characterized in that: The detector (3) comprises a detection camera (31) and a driving mechanical arm (32) for driving the detection camera (31) to move, and the detection camera (31) and the driving mechanical arm (32) are both electrically connected to a main control system; Working method of the detector (3): F1. The driving robot (32) drives the detection camera (31) to obtain an image of a lens that has completed the ink coating operation and feeds it back to the main control system. The main control system compares the image of the lens with a preset standard image to determine whether the appearance of the ink coated lens is similar to the appearance of the standard image. If so, F2 is executed. Otherwise, the driving robot (32) is controlled to clamp the inspected lens and place it on the rework tray (103); F2. The main control system evaluates the uniformity of the lens ink coating based on the variance value FVariance of the pixels in the ink coating area in the lens image. The calculation formula of the variance value FVariance is: Where N is the total number of pixels in the inked area, i is an integer from 1 to N, used to identify each pixel in the inked area, Gi is the gray value of the i-th pixel, and G2 is the average gray value of all pixels in the inked area; when the variance value is within the preset range, it is judged as a good product; F3. Drive the robot arm (32) to drive the detection camera (31) to obtain the image of another lens that has completed the inking operation and feed it back to the main control system, so as to repeat the detection of the inking quality of the lens.

Images