A method for inking a lens

Abstract

The present invention relates to the technical field of lens inking, and particularly to a lens inking method, which comprises the following steps: A. After removing dust from the lens, place it in the clamping and shaping seat; B. Cooperate with a vision camera, a main control system and the clamping and shaping seat to adjust the lens to be concentric with the clamping and shaping seat; C. Control the first inking head of the inking mechanism to ink the first inking area of the lens to form a first inking layer, and perform photocuring treatment on the first inking layer; D. The second inking head inks the second inking area of the lens to form a second inking layer to complete the inking operation; E. Transfer the lens that has completed the inking operation to the finished product tray; F. Detect the inking layer of the lens through a detector, place the detected defective products on the repair tray, and store the detected qualified products in the temporary storage library. In the whole inking process of the present invention, including the placement, inking, photocuring treatment and transfer of the lens, automatic operation is realized, manual intervention is reduced, production efficiency is improved and human error is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lens inking, and particularly to a lens inking 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 link to improve lens performance, improve visual effects and protect the lens surface from wear.

[0003] Traditional lens inking processes mostly adopt manual or semi-automatic methods. The lens inking process still relies on manual operation, which not only has low production efficiency, but is also easily affected by human factors, resulting in unstable inking 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 for the deficiencies of the existing technology. The entire inking process, including the placement, inking, light curing treatment and transfer of the lens, realizes automatic operation, reduces manual intervention, improves production efficiency and reduces human error, and improves inking quality.

[0005] To achieve the above purpose, a lens inking method of the present invention includes the following steps:

[0006] A. After removing dust from the lens on the to-be-treated tray, place it in the clamping and shaping seat;

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

[0008] C. Control the first inking head of the inking mechanism to approach the lens and align it with the first inking area of the lens. The clamping and shaping seat drives the lens to rotate, and the first inking head inks the first inking area of the lens to form a first inking layer. Control the first inking head to move away from the lens, and the clamping and shaping seat keeps driving the lens to rotate to perform light curing treatment on the first inking layer;

[0009] D. After the light curing treatment of the first inking layer of the lens is completed, control the second inking head of the inking mechanism to approach the lens and align it with the second inking area of the lens. The second inking head inks the second inking area of the lens. After the inking operation of the second inking area of the lens is completed to form a second inking layer, the second inking head continues to ink the first inking area so that the second inking layer extends and covers the upper part of the first inking layer. Control the second inking head to move away from the lens, and the clamping and shaping seat drives the lens to stop rotating, so that the lens completes the inking operation;

[0010] E. Transfer the lens that has completed the inking operation to the finished product tray;

[0011] F. The ink coating layer of the lens is detected by a detector. The defective products detected are placed on the repair tray, and the qualified products detected are stored in the temporary storage warehouse.

[0012] Advantages of the present invention: Through the precise cooperation of the vision camera, the main control system and the clamping and shaping seat, the present invention ensures the stability and accurate positioning of the lens during the ink coating process, thereby greatly improving the accuracy of ink coating and the uniformity of the ink coating layer, reducing the ink coating quality problems caused by position deviation, and enhancing the ink coating accuracy and uniformity.

[0013] The entire ink coating process realizes a high degree of automation. From lens dust removal, placement, ink coating, light curing treatment to finished product transfer and detection, no large amount of manual intervention is required, significantly improving production efficiency, reducing labor costs, realizing automated production, and enhancing efficiency.

[0014] The ink coating mechanism designed in the patent has a first ink coating head and a second ink coating head, which can successively ink coat different areas of the lens and achieve the superposition and coverage of the ink coating layer, providing more complex and diverse ink coating design possibilities for the lens, meeting the requirements of different application scenarios, and realizing multi-area ink coating.

[0015] The immediate quality detection of the ink-coated lens is carried out by a detector, which can quickly detect and isolate defective products, prevent defective products from flowing into subsequent processes, and at the same time ensure that qualified products are properly stored, facilitating quality control and continuous improvement in the production process, enabling the method of this application to perform immediate quality detection and feedback.

[0016] Due to the realization of automated production and immediate quality detection, manual operations and waiting time are reduced, thereby shortening the production cycle and reducing the additional costs brought by rework or re-production, reducing the production cycle and costs. Brief Description of the Drawings

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

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

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

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

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

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

[0023] Figure 7 Schematic structural diagram of the conveying mechanism of the present invention.

[0024] Figure 8 Schematic structural diagram of the suction cup mechanism and the cleaning mechanism of the present invention.

[0025] Figure 9 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, disk to be processed; 102, finished product disk; 103, repair disk;

[0028] 1, clamping and shaping seat; 11, negative pressure suction table; 12, rotary drive; 13, adjustment clamp; 14, adjustment drive;

[0029] 2, ink coating mechanism; 21, first ink coating head; 22, second ink coating head; 201, housing; 2011, ink guiding hole; 2012, ink guiding groove; 202, ink coating sponge; 2021, groove; 203, fixed sponge sleeve; 2031, clamping block; 204, sponge piercing needle; 23, first actuator; 24, second actuator; 25, third actuator; 26, fourth actuator;

[0030] 3, detector; 31, detection camera; 32, driving robotic arm;

[0031] 4, temporary storage library; 41, storage drive; 42, storage rack; 421, bearing groove; 422, limiting plate;

[0032] 5, conveying mechanism; 51, conveying drive; 52, conveying carrier plate; 53, first conveying disk; 54, second conveying disk;

[0033] 6, transfer mechanism; 61, transfer drive; 62, suction cup mechanism; 621, fixed rod; 622, suction head; 63, cleaning mechanism; 631, air extraction cylinder; 632, air cylinder drive; 633, air hood; 6331, upper hood body; 6332, middle hood body; 6333, lower hood body; 6334, sealing edge; 634, air blowing nozzle; 6341, first air blowing nozzle; 6342, second air blowing nozzle; 635, brush strip; 6351, first brush strip; 6352, second brush strip. Detailed implementation manners

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

[0035] As Figures 1 to 9 shown, a method for coating ink on a lens according to the present invention includes the following steps:

[0036] A. After dust removal of the lens on the disk to be processed 101, place it in the clamping and shaping seat 1.

[0037] B. Through the cooperation of the vision camera, the main control system and the clamping and shaping seat 1, adjust the lens to be concentric with the clamping and shaping seat 1.

[0038] C. Control the first ink application head 21 of the ink application mechanism 2 to approach the lens and align with the first ink application area of the lens. The clamping and shaping seat 1 drives the lens to rotate, and the first ink application head 21 applies ink to the first ink application area of the lens to form a first ink application layer. Control the first ink application head 21 to move away from the lens, and the clamping and shaping seat 1 keeps driving the lens to rotate to perform light curing treatment on the first ink application layer.

[0039] D. After the light curing treatment of the first ink application layer of the lens is completed, control the second ink application head 22 of the ink application mechanism 2 to approach the lens and align with the second ink application area of the lens. The second ink application head 22 applies ink to the second ink application area of the lens. After the ink application operation on the second ink application area of the lens is completed to form a second ink application layer, the second ink application head 22 continues to apply ink to the first ink application area so that the second ink application layer extends and covers the upper part of the first ink application layer. Control the second ink application head 22 to move away from the lens, and the clamping and shaping seat 1 drives the lens to stop rotating, so that the lens completes the ink application operation.

[0040] E. Transfer the lens that has completed the ink application operation to the finished product disk 102.

[0041] F. Detect the ink application layer of the lens through the detector 3, place the detected defective products on the repair disk 103, and store the detected qualified products in the temporary storage library 4.

[0042] Through the precise cooperation of the vision camera, the main control system and the clamping and shaping seat 1, the stability and accurate positioning of the lens during the ink application process are ensured, thus greatly improving the ink application accuracy and the uniformity of the ink application layer, reducing the ink application quality problems caused by position deviation, and enhancing the ink application accuracy and uniformity.

[0043] The entire ink application process realizes a high degree of automation. From lens dust removal, placement, ink application, light curing treatment to finished product transfer and detection, no large amount of manual intervention is required, significantly improving the production efficiency, reducing the labor cost, realizing automated production, and improving the efficiency.

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

[0045] The instant quality inspection of the ink-coated lens is carried out by the detector 3, which 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, enabling the method of this application to perform instant quality inspection and feedback.

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

[0047] As Figure 1 and Figure 6 As shown in [figures not provided], the conveying mechanism 5 in this embodiment conveys the to-be-processed tray 101 or the finished product tray 102, so that the to-be-processed tray 101 and the finished product tray 102 are horizontally aligned with the clamping and shaping seat 1, facilitating the transfer of the lens between the to-be-processed tray 101, the finished product tray 102 and the clamping and shaping seat 1. The automated conveyance of the to-be-processed tray 101 and the finished product tray 102 is realized, making the transfer of the lens between the to-be-processed tray 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 tray 53 and a second conveying tray 54. Among them, the conveying driver 51 is a conveying mechanism for linear motion, such as a linear drive cylinder module. The linear driver directly converts power into linear motion without the need for additional transmission devices, so it has the advantages of simple structure and high efficiency.

[0049] The conveying driver 51 drives the displacement of the conveying carrier plate 52.

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

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

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

[0053] The design of this conveying mechanism enables it to flexibly adapt to different sizes and types of to-be-processed trays 101 and finished product trays 102, enhancing the versatility and adaptability of the production line, which is beneficial for enterprises to meet diverse production requirements.

[0054] As 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, both the first conveying tray 53 and the second conveying tray 54 are fixed to the conveying support plate 52 through the cooperation of the limit posts and the limit holes.

[0056] As Figure 1 and Figure 5 shown, the temporary storage library 4 of this embodiment includes a storage driver 41 and a storage rack 42. Among them, the storage driver 41 is an electric push rod or a linear driver, 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 an additional transmission mechanism, so the structure is compact and the response is rapid. 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 lift and lower.

[0058] A plurality of bearing grooves 421 for placing the first conveying tray 53 or the second conveying tray 54 are arranged inside the storage rack 42, and limit plates 422 are arranged at both ends of the lifting of the storage rack 42. The limit plates 422 can prevent the storage rack 42 from moving excessively during the lifting process, so as to protect the lenses stored in the temporary storage library 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] During use, the lenses on the disk to be processed 101 are placed on the finished product disk 102 after the inking operation is completed through the cooperation of the clamping and shaping seat 1 and the inking mechanism 2. The empty disk to be processed 101 is placed on the first conveying tray 53, and the finished product disk 102 is placed on the second conveying tray 54. The storage driver 41 drives the storage rack 42 to rise or fall, so that the bearing groove 421 is aligned with the first conveying tray 53 and the second conveying tray 54. The conveying driver 51 drives the conveying support plate 52 to displace, so that the disk to be processed 101 placed on the first conveying tray 53 and the finished product disk 102 placed on the second conveying tray 54 enter the storage rack 42 together. The storage driver 41 drives the storage rack 42 to rise, so that the first conveying tray 53 and the second conveying tray 54 are carried on the bearing groove 421 and separated from the conveying support plate 52. The conveying driver 51 drives the conveying support plate 52 to withdraw from the storage rack 42, realizing that the first conveying tray 53, the second conveying tray 54, the disk to be processed 101 and the finished product disk 102 are stored in the storage rack 42, that is, the inked lenses are stored in the temporary storage library 4.

[0060] As Figure 1 and Figure 7As shown, in this embodiment, the lens is transferred to the to-be-processed tray 101, the finished product tray 102, and the clamping and shaping seat 1 by the transfer mechanism 6, and the dust removal operation is performed on the lens on the to-be-processed tray 101. The transfer mechanism 6 can automatically transfer the lens from the to-be-processed tray 101 to the clamping and shaping seat 1 and the finished product tray 102, significantly improving the efficiency of lens processing.

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

[0062] Among them, the transfer driver 61 is a conventional XY-axis mechanism hand. The conventional XY-axis mechanism hand is a mechanical device that performs precise positioning and movement in a two-dimensional plane, namely the plane formed by the X-axis and the Y-axis. It is commonly used in fields such as automated production, robotics, precision machining, experimental equipment, and testing systems. This mechanism hand is composed of drive mechanisms in two directions, the X-axis and the Y-axis, and can achieve independent or combined movements in these two directions, so as to reach any position in the plane.

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

[0064] Among them, the suction head 622 is a vacuum pump type suction cup or an air flow negative pressure type suction cup. The vacuum pump type suction cup is the most common type. By pumping the air inside the suction cup with a vacuum pump, a low-pressure environment is formed, thereby generating an adsorption force. This type of suction cup is usually used in occasions where stable adsorption is required.

[0065] The air flow negative pressure type suction cup works by using the negative pressure generated by the air flow. The adsorption and release of objects are achieved through an air flow control valve, which is suitable for occasions where frequent adsorption and release are required. In this embodiment, the suction head 622 is taken as an example of the air flow negative pressure type suction cup.

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

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

[0068] The working method of the transfer 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 transfer mechanism 6 can adapt to the lens processing requirements of different sizes and types, and only needs to adjust the relevant parameters, which enhances the versatility and applicability of the equipment.

[0079] As Figure 9 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. 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 body 6331, a middle hood body 6332, and a lower hood body 6333. This modular design facilitates assembly, disassembly, and maintenance. And the air hood 633 is divided into three different functional areas. The upper hood body 6331 corresponds to the suction head 622 as the suction head cleaning area. The middle hood body 6332 is the spacer area. The lower hood body 6333 corresponds to the lens as the lens cleaning area.

[0081] The first brush strip 6351 is fixed to the upper hood body 6331 for cleaning the suction head 622, and the second brush strip 6352 is fixed to the lower hood body 6333 for cleaning the lens. By setting the first brush strip 6351 and the second brush strip 6352 to clean the suction head 622 and the lens respectively, targeted cleaning of different components is achieved, improving the cleaning efficiency and effect. Avoid cross - using the first brush strip 6351 for cleaning the suction head 622 and the second brush strip 6352 for cleaning the lens.

[0082] The first air blowing nozzle 6341 is arranged in the middle hood body 6332 and blows air towards the upper hood body 6331, and the second air blowing nozzle 6342 is arranged in the middle hood body 6332 and blows air towards the lower hood body 6333. The settings of the first air blowing nozzle 6341 and the second air blowing nozzle 6342, blowing air towards the upper hood body and the lower hood body respectively, make the first brush strip 6351 and the second brush strip 6352 swing respectively to achieve the cleaning effect of the brush strip 635, and at the same time, further remove dirt and residues through the air flow, enhancing the cleaning ability.

[0083] A sealing edge 6334 is arranged at the end of the lower hood body 6333, and the cross - section of the sealing edge 6334 is in the shape of A, n, or W. By arranging the sealing edge 6334 at the end of the lower hood body 6333 and the cross - section of the sealing edge is in the shape of A, n, or W, this design improves the sealing performance of the contact part between the air hood 633 and the disk 101 to be processed, 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 in the shape of A as an example.

[0084] As Figure 1 and Figure 2As shown in the figure, the clamping and shaping base 1 of this embodiment includes a negative pressure suction table 11, a rotation driver 12, an adjustment clamp 13, and an adjustment driver 14. 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 rotation driver 12 drives the negative pressure suction table 11 to rotate.

[0087] The number of the adjustment clamps 13 is two, and the two adjustment clamps 13 are respectively arranged on both sides of the negative pressure suction table 11.

[0088] The adjustment driver 14 drives the two adjustment clamps 13 to approach or move away from the negative pressure suction table 11 simultaneously.

[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 acting force of the adjustment driver 14 for driving the two adjustment clamps 13 to approach or move away from the negative pressure suction table 11 simultaneously 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 clamps 13 to approach the negative pressure suction table 11 simultaneously, which can push the lens to displace.

[0090] Among them, the rotation driver 12 is a reduction motor. The rotation driver 12 drives the negative pressure suction table 11 to rotate through transmission parts, such as the cooperation of a synchronous pulley and a synchronous belt. In other embodiments, the rotation 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] Through the setting of the first suction force and the second suction force of the negative pressure suction table 11, stable fixation of the lens can be achieved, ensuring that the lens will not move or fall off during the shaping or processing process.

[0092] Working method of the clamping and shaping base 1:

[0093] B1. Place the lens on the negative pressure suction table 11, and the negative pressure suction table 11 adsorbs the lens with the first suction force, then execute B2.

[0094] B2. The vision camera acquires the 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 judges 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, 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 clips 13 to approach the negative pressure suction table 11 simultaneously and pushes the lens to displace, execute B2, and repeat this to adjust the lens to be concentric with the clamping and shaping seat 1.

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

[0097] When the lens and the negative pressure suction table are not concentric, the adjustment driver 14 can drive the two adjustment clips 13 to approach the negative pressure suction table 11 simultaneously and push the lens to displace, so as to accurately adjust the position of the lens and make it concentric with the clamping and 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 the appropriate suction force can be selected according to needs to adsorb the lens. Under the first suction force, the lens can be stably adsorbed but can be pushed by the adjustment clip 13; under the second suction force, the lens is more firmly fixed, which is suitable for subsequent processing or treatment steps.

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

[0100] As Figure 2 shown, the negative pressure suction table 11 of this embodiment is provided with a negative pressure suction pipe 111 and a guide sliding sleeve 112. The negative pressure suction pipe 111 extends out of the negative pressure suction table 11, and the guide sliding sleeve 112 is fixed to the end of the negative pressure suction pipe 111. The guide sliding sleeve 112 is provided with air permeable holes communicated with the negative pressure suction pipe 111, and the negative pressure suction pipe 111 adsorbs the lens through the guide sliding sleeve 112 via the air permeable holes.

[0101] Among them, the guide sliding sleeve 112 is made of polymer materials, such as polytetrafluoroethylene PTFE, nylon or polyimide PI. In this embodiment, the guide sliding sleeve 112 is taken as an example of polytetrafluoroethylene PTFE.

[0102] Through the settings of the negative pressure suction pipe 111 and the guide sliding sleeve 112, the negative pressure suction table 11 can adsorb the lens more stably. The negative pressure suction pipe 111 extends out of the negative pressure suction table 11 and directly acts on the lens surface, while the guide sliding 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 permeable holes on the guide sliding sleeve 112 are communicated with 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 enables the lens to be fixed more quickly.

[0104] The setting of the guiding sliding sleeve 112 also plays a role in protecting the lens. During the adsorption process, the guiding sliding sleeve 112 can buffer the direct impact of the negative pressure suction pipe 111 on the lens, avoiding damage to the lens due to uneven stress. At the same time, the material and design of the guiding sliding sleeve 112 can also reduce the friction with the lens surface, further protecting the lens.

[0105] Due to the certain flexibility and adaptability of the guiding sliding sleeve 112, it can be finely adjusted according to the shape and size of the lens, so as to ensure that the negative pressure suction pipe 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, improving its versatility and practicality.

[0106] The combined use of the negative pressure suction table 11, the negative pressure suction pipe 111, and the guiding sliding 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 quickly fix the lens. This design improves work efficiency and reduces the operation difficulty.

[0107] As Figure 1 and Figure 3 shown, the inking 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 move up and down 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 inking head 21 and the second inking head 22 are respectively arranged on the fourth actuator 26 in a staggered manner. The fourth actuator 26 drives the first inking head 21 and the second inking head 22 to move in a staggered displacement.

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

[0109] The fourth actuator 26 includes a fixing 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 both ends of the fixing 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 inking head 21 is arranged on the upper conveying part, and the second inking head 22 is arranged on the lower conveying part. The first inking head 21 and the second inking head 22 are arranged in a staggered manner. During use, the motor drives the first driving wheel to rotate, so that the second driving wheel and the synchronous belt are linked, so that the first inking head 21 and the second inking head 22 move in a staggered displacement, realizing the displacement of the fourth actuator 26 driving the first inking head 21 and the second inking head 22 to move in a staggered manner. It increases the flexibility and coverage of inking.

[0110] As Figure 4As shown, both the first ink application head 21 and the second ink application head 22 include a housing 201, an ink application sponge 202, a fixed sponge sleeve 203, and a sponge-piercing 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 discharging ink. The ink guide hole 2011 is communicated with the ink guide groove 2012, ensuring the smooth flow and uniform distribution of the ink, and improving the quality and stability of the ink application.

[0111] The ink application sponge 202 is fixed to the fixed sponge sleeve 203. The fixed sponge sleeve 203 is arranged in the ink guide groove 2012. The ink application sponge 202 is connected to the housing 201 through the fixed sponge sleeve 203. During use, the black ink enters the ink guide groove 2012 through the ink guide hole 2011, so that the ink penetrates into the ink application sponge 202, facilitating the ink application to the lens through the ink application sponge 202. And this fixing method is both stable and convenient for replacement. When the ink application sponge is worn or needs to be replaced, the fixed sponge sleeve 203 and the ink application sponge 202 can be easily disassembled, reducing the maintenance cost and operation difficulty.

[0112] The sponge-piercing needle 204 penetrates through the ink application sponge 202 and is fixed to the fixed sponge sleeve 203. The design of the sponge-piercing needle 204 penetrating through the ink application sponge 202 helps to maintain the flatness and stability of the ink application sponge 202, preventing it from deforming or shifting during the ink application process, thereby further improving the quality and uniformity of the ink application.

[0113] The ink application mechanism 2 of this embodiment further 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 application head 21 through a pipeline, and the second ink feeder is connected to the ink guide hole 2011 of the second ink application head 22 through a pipeline. The first ink feeder and the second ink feeder are respectively connected to the first ink application head 21 and the second ink application head 22 through pipelines. This modular design enables the ink feeding and ink application functions to be carried out independently, facilitating the maintenance and replacement of components. By providing ink to the ink application head through an independent ink feeder, precise control of the ink flow rate for each ink application head can be achieved, thereby improving the uniformity and accuracy of the ink application.

[0114] The ink application sponge 202 is provided with a groove 2021, and the fixed sponge sleeve 203 is provided with a clamping block 2031 corresponding to the groove 2021. The sponge-piercing needle 204 penetrates through the groove 2021 of the ink application sponge 202 and is connected to the clamping block 2031 of the fixed sponge sleeve 203. This enables the ink application sponge to be stably installed on the fixed sponge sleeve, preventing it from moving or deforming during the ink application process. When the ink application sponge needs to be replaced, removing the sponge-piercing needle 204 can easily remove the ink application sponge 202 from the upper fixed sponge sleeve 203, improving the maintenance efficiency and convenience of the equipment.

[0115] As Figure 1As shown in the figure, 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. Both the detection camera 31 and the driving robotic arm 32 are electrically connected to the main control system. Among them, the detection camera 31 is an industrial camera, and the driving robotic arm 32 is a multi-axis robotic arm.

[0116] Working method of the detector 3:

[0117] F1. The driving robotic arm 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 that of the standard image. If so, execute F2; otherwise, control the driving robotic arm 32 to clamp the lens to be detected and place it on the repair tray 103.

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

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

[0120] F3. The driving robotic arm 32 drives the detection camera 31 to obtain an image of another lens that has completed the ink coating operation and feeds it back to the main control system, and repeats the detection of the ink coating quality of the lens in this way.

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

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

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

[0124] By calculating the variance value FVariance of the pixels in the ink-coated area to evaluate the uniformity of the ink coating on the lens, an objective and quantitative evaluation method is provided, avoiding the randomness 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 clamp and place the unqualified lens on the repair tray 103 through the driving robotic arm 32, realizing the screening of good products and the timely repair guidance for unqualified products.

[0126] The detector 3 can continuously detect multiple lenses that have completed the ink coating operation, improving the detection efficiency and throughput of the production line.

[0127] The design of this detector has a certain degree of flexibility and can be adjusted and optimized according to different ink coating requirements and detection standards, and is applicable to various detection scenarios of ink-coated lenses.

[0128] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to 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. Inspect the ink coating layer of the lens using a detector (3), place defective products on a rework tray (103), and store qualified products in a temporary storage warehouse (4); 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 a 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.

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 rise and fall; 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: 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 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