Continuous Online Production Method and System for Contact Lenses

Abstract

This invention provides a continuous online production method and system for contact lenses, belonging to the field of contact lens manufacturing technology. It solves the problem of poor stability in existing technologies. The continuous online production method for contact lenses includes the following steps: A) adaptation and preparation; B) module connection; C) detection and buffering operations. The continuous online production system for contact lenses includes a dry lens processing module, a wet lens processing module, a sterilization module, and an outsourcing module. Each of the dry lens processing module, wet lens processing module, and sterilization module has a transfer buffer mechanism at its output end. Several adjacent modules are connected by a material rack mechanism. The transfer buffer mechanism can transfer semi-finished products from one module to the next adjacent module according to a set conveying speed and conveying volume. This production method is highly efficient, and the system has a compact structure.

Description

Technical Field

[0001] This invention belongs to the field of contact lens manufacturing technology, and relates to a continuous online production method and system for contact lenses. Background Technology

[0002] The manufacturing process of contact lenses is a complex and precise one, involving multiple steps and technologies to ensure the optical performance, comfort, and safety of the lenses.

[0003] The manufacturing process of contact lenses includes the following steps:

[0004] I. Design and Calculation

[0005] 1. Prescription data: Based on the ophthalmologist's prescription, obtain the patient's refractive power, base curve, diameter, and other parameters.

[0006] 2. Computer-Aided Design (CAD): Using computer software to design lenses to ensure their optical performance and comfort.

[0007] II. Material Preparation

[0008] 1. Material selection: Select appropriate polymer materials, such as hydrogel or silicone hydrogel, based on the intended use and performance requirements of the lens.

[0009] 2. Pretreatment: The materials are pretreated by cleaning and drying to ensure their purity and quality.

[0010] III. Mold Making

[0011] 1. Mold Design: Computer-aided design (CAD) software is used for mold design to ensure that the size, curvature and thickness of the lens meet the design requirements.

[0012] 2. Mold manufacturing: Molds are manufactured using high-precision CNC machine tools. Molds are typically made of metal (such as stainless steel) or high-precision plastic materials.

[0013] 3. Mold cleaning: Ensure the mold surface is clean and free of dust and contaminants.

[0014] IV. Injection of adhesive

[0015] 1. Injection equipment: High-precision injection equipment is used to inject liquid polymer materials into the mold.

[0016] 2. Adhesive injection volume control: Precisely control the amount of adhesive injected to ensure consistent lens thickness and shape.

[0017] 3. Injection speed: Control the injection speed to avoid air bubbles and uneven filling.

[0018] V. Curing

[0019] 1. Curing method: Select the appropriate curing method according to the characteristics of the material. Common methods include heat curing and ultraviolet curing.

[0020] • Thermosetting: The mold after injection is placed in an oven and the material is cured by heating.

[0021] • UV curing: Place the mold after injection under ultraviolet light to cure the material.

[0022] 2. Curing time: Determine the appropriate curing time based on the characteristics of the material and the curing method.

[0023] VI. Cooling

[0024] 1. Cooling equipment: Remove the cured mold from the curing equipment and place it on a cooling rack or in the cooling equipment.

[0025] 2. Cooling time: Determine the appropriate cooling time based on the size of the mold and the characteristics of the material, which is usually 30 minutes to 1 hour.

[0026] 7. Peeling

[0027] 1. Specialized tools: Use specialized shelling tools, such as tweezers and hooks, to ensure the accuracy and safety of the operation.

[0028] 2. Manual method: For some small molds, you can use your fingers to gently press the edge of the mold to make the lens detach from the mold.

[0029] 3. Gentle handling: Be gentle during the peeling process to avoid damaging the lens.

[0030] 4. Inspection: After removing the lens, inspect it for cracks, scratches or damage to ensure its integrity.

[0031] 8. Cleaning and Polishing

[0032] 1. Cleaning: Use saline or a special cleaning solution to thoroughly clean the lenses and remove any residue from the surface.

[0033] 2. Polishing: Polish the lens surface to ensure a smooth surface and improve optical performance.

[0034] IX. Quality Inspection

[0035] 1. Optical Inspection: Use optical instruments to inspect parameters such as the refractive power, base curve, and diameter of the lens to ensure that they meet the design requirements.

[0036] 2. Physical testing: Testing the physical properties of the lens, such as thickness, oxygen permeability, and surface roughness.

[0037] 3. Biocompatibility testing: Conduct biocompatibility tests such as cytotoxicity and allergic reaction tests to ensure the safety of the lenses.

[0038] 10. Packaging and Sterilization

[0039] 1. Packaging: Place qualified lenses into sterile packaging bags and add an appropriate amount of preservation solution.

[0040] 2. Sterilization: The lenses are sterilized using methods such as ethylene oxide and radiation to ensure their sterility.

[0041] It can be seen that, in the above process, injection molding is a dry operation module, cleaning and polishing are wet operation modules, and packaging and sterilization are external operation modules.

[0042] In the existing production system, each module is an independent module. The semi-finished products obtained after processing at the corresponding module are usually sent to the next processing module by AGV carts or manual handling.

[0043] It can be seen that this method of operation has relatively low efficiency, and accidents may occur during AGV or manual handling operations, resulting in poor stability. Summary of the Invention

[0044] The first objective of this invention is to provide a continuous online production method for contact lenses, addressing the aforementioned problems existing in the prior art.

[0045] A second objective of this invention is to provide a production system used in the above-described continuous online production method for contact lenses.

[0046] The first objective of this invention can be achieved through the following technical solutions:

[0047] A continuous online production method for contact lenses, the continuous online production system for contact lenses including a dry lens processing module, a wet lens processing module, a sterilization processing module, and an outsourcing processing module, characterized in that the method includes the following steps:

[0048] A. Adaptation and Preparation: Select the corresponding module according to the processing requirements of contact lenses;

[0049] B. Module connection: A material rack mechanism is set between two adjacent modules to connect and communicate with each other. Several material rack mechanisms can connect several modules in series.

[0050] C. Inspection and caching operation: When the semi-finished product enters the next adjacent module through the material rack mechanism from the set module, the semi-finished product is inspected and cached. After inspection, unqualified semi-finished products are removed. Several modules are in continuous operation. The semi-finished products output from each module enter the corresponding cache area. After the semi-finished products are buffered in the cache area, the speed at which the semi-finished products enter the next module can be controlled.

[0051] Furthermore, during the continuous operation of steps A to C, the products and / or semi-finished products are all circulated within a closed space. The circulation within the closed space means that the products and / or semi-finished products do not flow back to the production line after they are taken offline during the continuous production process.

[0052] The second objective of this invention can be achieved through the following technical solutions:

[0053] A continuous online production system for contact lenses includes a dry lens processing module, a wet lens processing module, a sterilization module, and an outsourcing module. The system is characterized in that each of the dry lens processing module, wet lens processing module, and sterilization module has a transfer buffer mechanism at its output end, and a material rack mechanism is provided between several adjacent modules. The transfer buffer mechanism can transfer semi-finished products from one module to the next adjacent module via the material rack mechanism according to a set conveying speed and conveying volume.

[0054] In the aforementioned continuous online production system for contact lenses, the dry lens processing module, wet lens processing module, sterilization module, and outsourcing module are all independent modules. Adjacent modules are connected by a material rack mechanism, which enables semi-finished products to stably move from the previous module to the next adjacent module.

[0055] In the aforementioned continuous online contact lens production system, the dry lens processing module includes a pad printing unit and a forming unit, and a material rack mechanism connects the pad printing unit and the forming unit.

[0056] In the aforementioned continuous online production system for contact lenses, the molding unit includes an injection area, a curing area, and a shell-peeling area. The curing area and the shell-peeling area are adjacent and centrally located. The curing area is situated between the injection area and the shell-peeling area. Material rack mechanisms are provided between the pad printing unit and the injection area, as well as between the injection area and the curing area.

[0057] In the aforementioned continuous online production system for contact lenses, the transfer buffer mechanism includes an infeed robot, a turntable, and an outfeed robot. Each module has a support, and the infeed robot, turntable, and outfeed robot are all connected to their respective supports. The infeed robot and the outfeed robot are located on opposite sides of the turntable, which has a fixture for storing semi-finished products.

[0058] In the aforementioned continuous online production system for contact lenses, there are several fixtures, which are evenly distributed circumferentially on the upper part of the turntable.

[0059] In the aforementioned continuous online production system for contact lenses, the support has a drive component for intermittently rotating a turntable. Each time the turntable rotates intermittently, the aforementioned infeed robot and outfeed robot can each face a corresponding fixture.

[0060] In the above-mentioned continuous online production system for contact lenses, the feeding robot arm has several clamping parts 1, each clamping part 1 can clamp a corresponding semi-finished product, the fixture has positioning parts that correspond one-to-one with the clamping parts 1 and are used to position the semi-finished product, and the discharging robot arm has several clamping parts 2, the number of clamping parts 2 is the same as the number of clamping parts 1 and they are set one-to-one.

[0061] In the aforementioned continuous online production system for contact lenses, the support also includes an inspection mechanism and a rejection mechanism. After the turntable rotates intermittently, the fixtures on it can enter the inspection mechanism one by one. When the inspection mechanism detects that there are unqualified semi-finished products in the corresponding fixtures, the rejection mechanism can remove the corresponding unqualified products from the fixtures.

[0062] In the aforementioned continuous online contact lens production system, the inspection mechanism is a CCD industrial camera.

[0063] In the aforementioned continuous online production system for contact lenses, the rejection mechanism includes a rejection robot and a waste channel. The rejection robot can move to the turntable fixture to grab the corresponding semi-finished product, and the rejection robot can place the grabbed semi-finished product into the waste channel.

[0064] Compared with existing technologies, this continuous online production method for contact lenses allows the entire system to operate continuously without interruption because each module is in constant operation. During the operation, the speed and quantity of semi-finished products entering the next module are controlled by buffering, thus enabling the entire system to work continuously without interruption. Moreover, the material rack mechanism can quickly and stably deliver semi-finished products to the next module. The entire method has high operating efficiency and relatively high operational stability.

[0065] Meanwhile, the continuous online production system for contact lenses features a compact structure because several modules are connected in series via a rack mechanism. Semi-finished products can quickly move to the next module via this mechanism. Furthermore, the transfer and buffer mechanism effectively controls the speed and quantity of semi-finished products entering the next module. Therefore, during the uninterrupted continuous operation of each module, the output of semi-finished products can be controlled through the transfer and buffer mechanism, ensuring stable and continuous operation of all modules.

[0066] It can be seen that this system has the following advantages:

[0067] 1. (Continuous Production) The entire production line operates continuously, with each station working continuously in the predetermined process sequence within the same time period, and the operation of the subsequent station is not affected by the previous station.

[0068] 2. (Dynamic workstation configuration) The number of workstations can be freely combined according to production needs to form a local production line;

[0069] 3. (Quick Changeover) Each workstation is equipped with an auxiliary mechanical module, which enables quick and convenient changeover operations;

[0070] 4. (Isolation Mechanism) Integrates intelligent detection and isolation mechanisms to automatically identify defective products and isolate them from the production process, preventing defective products from flowing back to subsequent processes;

[0071] 5. (Multi-functional WIP) For semi-finished product stations, an independent second unloading point is set up to realize local line-side buffering function;

[0072] 6. (Intelligent Transportation) The intelligent online material rack system enables efficient, precise, and automated transportation of materials between workstations;

[0073] 7. (Dedicated jig line) The jig line is dedicated to a specific purpose through technologies such as RFID, and the jig lines are not mixed. Attached Figure Description

[0074] Figure 1 This is a schematic diagram of the structure of this continuous online production system for contact lenses.

[0075] Figure 2 This is a schematic diagram of the transfer buffer mechanism in the continuous online production system for contact lenses.

[0076] In the diagram, 1. Dry film processing module; 1b. Molding unit; 1b2. Curing area; 1b3. Peeling area; 2. Wet film processing module; 3. Sterilization module; 4. Outsourcing module; 5. Transfer and buffer mechanism; 5a. Feeding robot; 5b. Turntable; 5b1. Fixture; 5c. Discharge robot; 6. Material rack mechanism; 7. Detection mechanism; 8. Rejection mechanism; 8a. Rejection robot; 8b. Waste channel. Detailed Implementation

[0077] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0078] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0079] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0080] like Figure 1 and Figure 2 As shown, the continuous online production system for contact lenses includes a dry lens processing module 1, a wet lens processing module 2, a sterilization processing module 3, and an outsourcing processing module 4. The continuous online production method for contact lenses includes the following steps:

[0081] A. Adaptation and Preparation: Select the corresponding module according to the processing requirements of contact lenses;

[0082] B. Module connection: A material rack mechanism 6 is set between two adjacent modules to connect and communicate with each other. Several material rack mechanisms 6 can connect several modules in series.

[0083] C. Inspection and Buffering Operation: When the semi-finished product enters the adjacent next module from the set module through the material rack mechanism 6, the semi-finished product is inspected and buffered. After inspection, unqualified semi-finished products are rejected. Several modules are in continuous operation. The semi-finished products output from each module enter the corresponding buffer area. After the semi-finished products are buffered in the buffer area, the speed at which the semi-finished products enter the next module can be controlled.

[0084] This continuous online contact lens production system includes a dry lens processing module 1, a wet lens processing module 2, a sterilization processing module 3, and an outsourcing processing module 4. Each of the dry lens processing module 1, wet lens processing module 2, and sterilization processing module 3 has a transfer buffer mechanism 5 at its output end. Several adjacent modules are connected by a material rack mechanism 6. The transfer buffer mechanism 5 can transfer semi-finished products from the previous module to the next adjacent module through the material rack mechanism 6 according to the set conveying speed and conveying volume.

[0085] Dry tablet processing module 1, wet tablet processing module 2, sterilization processing module 3 and outsourcing processing module 4 are all independent modules. Adjacent modules are connected by a material rack mechanism 6, and under the action of the material rack mechanism 6, the semi-finished product can be stably moved from the previous module to the next adjacent module.

[0086] The dry film processing module 1 includes a pad printing unit and a forming unit 1b, and the pad printing unit and the forming unit 1b are connected by a material rack mechanism.

[0087] The molding unit 1b includes a glue injection area, a curing area 1b2, and a peeling area 1b3. The curing area 1b2 and the peeling area 1b3 are adjacent and centrally located. The curing area 1b2 is located between the glue injection area and the peeling area 1b3. The pad printing unit and the glue injection area, as well as the glue injection area and the curing area 1b2, are equipped with a material rack mechanism 6.

[0088] Pad printing is a high-precision printing technology widely used to print text, images, logos, and other information onto contact lenses. This technology ensures the clarity and durability of the printed content without affecting the optical performance and comfort of the contact lenses.

[0089] Molding or casting is a crucial step in the contact lens manufacturing process. It involves injecting polymer materials (such as hydrogels or silicone hydrogels) into a mold, which then cures to form the final contact lens. This process ensures the lens's precision, consistency, and optical performance.

[0090] Demolding is a crucial step in the contact lens manufacturing process, referring to the removal of the cured contact lens from the mold. This step requires careful handling to ensure the lens's integrity and optical performance are not compromised.

[0091] Sterilization of contact lenses is a crucial step in ensuring their sterility before wear, which is essential for preventing eye infections and protecting the user's health. There are various methods for sterilizing contact lenses, including chemical sterilization, physical sterilization, and a combination of these methods.

[0092] Outsourcing of contact lenses refers to packaging finished contact lenses, which not only protects the finished contact lenses but also facilitates logistics and transportation.

[0093] Hydration of contact lenses is an important process. By soaking contact lenses in saline solution or other suitable solutions, they absorb moisture, regain their softness and transparency, and thus ensure comfort and safety when wearing them.

[0094] The dry operation module 1 includes pad printing, glue application, curing, and peeling processes, while the wet operation module is the hydration process.

[0095] Sterilization module 3 is used for sterilizing finished contact lenses, and packaging module 4 is used for packaging finished contact lenses.

[0096] Since the dry operation module 1 includes multiple independent processes, a material rack mechanism is also set between adjacent processes in this module to connect adjacent processes and enable the semi-finished products in this module to be quickly transported between adjacent processes.

[0097] Of course, each module or corresponding process operates continuously, so the previous module or process will continuously output semi-finished products. At this time, the transfer and buffer mechanism 5 buffers a relatively large number of semi-finished products, and only delivers a set amount of semi-finished products to the next process or module.

[0098] The transfer and buffer mechanism 5 includes an infeed robot 5a, a turntable 5b, and an outfeed robot 5c. Each module has a support. The infeed robot 5a, the turntable 5b, and the outfeed robot 5c are all connected to the corresponding support. The infeed robot 5a and the outfeed robot 5c are located on both sides of the turntable 5b. The turntable 5b has a fixture 5b1 for storing semi-finished products.

[0099] The feeding robot 5a clamps the semi-finished product from the previous process or module and sends the clamped semi-finished product to the turntable 5b. After the turntable 5b rotates, the semi-finished product on it enters the unloading robot 5c. The unloading robot 5c clamps the semi-finished product and sends it to the next process or module.

[0100] It can be seen that the feeding robot 5a is responsible for feeding the semi-finished product into the turntable 5b, and the unloading robot 5c is responsible for clamping the semi-finished product from the turntable 5b and feeding it into the corresponding process or module.

[0101] Of course, the turntable 5b will rotate intermittently, thereby further reducing the stroke of the feeding robot 5a and the discharging robot 5c.

[0102] The number of fixtures 5b1 is several, and the fixtures 5b1 are evenly distributed circumferentially on the upper part of the turntable 5b.

[0103] Multiple jigs 5b1 can store a larger number of semi-finished products, ultimately increasing the buffer capacity and enabling the transport of semi-finished products at lower or higher speeds.

[0104] The bracket contains a drive unit for intermittently rotating the turntable 5b. Each time the turntable 5b rotates intermittently, the aforementioned feeding robot 5a and discharging robot 5c can each face a corresponding fixture 5b1.

[0105] After the drive unit drives the turntable 5b to rotate intermittently, it can stably and quickly send the semi-finished product at the feeding robot 5a to the discharging robot 5c.

[0106] The feeding robot 5a has several clamping parts 1, each clamping part 1 can clamp a corresponding semi-finished product. The fixture has positioning parts that correspond one-to-one with the clamping parts 1 and are used to position the semi-finished products. The discharging robot has several clamping parts 2, the number of clamping parts 2 is the same as the number of clamping parts 1 and they are arranged in a one-to-one correspondence.

[0107] Multiple clamping parts can clamp multiple semi-finished products at once. Of course, the number of clamping parts 2 and the number of positioning parts on the fixture are the same as the number of clamping parts 1 and correspond one-to-one.

[0108] This structure allows for the simultaneous transport of multiple semi-finished products.

[0109] The bracket also has a detection mechanism 7 and a rejection mechanism 8. After the turntable 5b rotates intermittently, the fixtures on it can enter the detection mechanism 7 one by one. When the detection mechanism 7 detects that there are unqualified semi-finished products in the corresponding fixture 5b1, the rejection mechanism 8 can remove the corresponding unqualified products from the fixture 5b1.

[0110] The detection mechanism 7 is a CCD industrial camera.

[0111] A CCD (Charge-Coupled Device) industrial camera is a high-performance image acquisition device widely used in machine vision, automated inspection, medical imaging, scientific research, and other fields. CCD industrial cameras use photoelectric conversion technology to convert light into electrical signals, and then process these signals to generate digital images.

[0112] A CCD industrial camera can quickly and accurately detect whether semi-finished products at the fixture are qualified. Once a defective semi-finished product is detected on the fixture, the rejection mechanism can quickly and accurately remove the defective product.

[0113] The rejection mechanism 8 includes a rejection robot 8a and a waste channel 8b. The rejection robot 8a can move to the turntable 5b fixture 5b1 to grab the corresponding semi-finished product, and the rejection robot 8a can put the grabbed semi-finished product into the waste channel 8b.

[0114] The rejecting robot 8a clamps the defective semi-finished products on fixture 5b1 and sends them to the waste channel 8b. The waste channel 8b then sends the defective products to the corresponding waste collection point.

[0115] To ensure that defective semi-finished products pass reliably through waste channel 8b, two solutions can be adopted:

[0116] Firstly, the waste channel 8b is set at an angle, so that unqualified semi-finished products can slide down stably along the angled waste channel;

[0117] Secondly, the waste channel 8b has a movable conveyor belt, and unqualified semi-finished products are stably moved and output along the movable conveyor belt.

[0118] This continuous online production method for contact lenses ensures that each module operates continuously without interruption. During operation, the speed and quantity of semi-finished products entering the next module are controlled by buffering, enabling the entire system to work continuously without interruption. Furthermore, the material rack mechanism can quickly and stably deliver semi-finished products to the next module. The entire method has high operating efficiency and relatively high operational stability.

[0119] Meanwhile, the continuous online production system for contact lenses features a compact structure because several modules are connected in series via a rack mechanism. Semi-finished products can quickly move to the next module via this mechanism. Furthermore, the transfer and buffer mechanism effectively controls the speed and quantity of semi-finished products entering the next module. Therefore, during the uninterrupted continuous operation of each module, the output of semi-finished products can be controlled through the transfer and buffer mechanism, ensuring stable and continuous operation of all modules.

[0120] As can be seen, this production system operates continuously throughout the entire process, without the need for material handling. Moreover, the entire system is a fully enclosed process, preventing material mixing or cross-contamination during operation, making the entire system safer and more stable.

[0121] The material rack mechanism is a conveyor track for transporting semi-finished products. One end of the conveyor track is connected to the output end of one of the modules, and the other end of the conveyor track is connected to the input end of an adjacent module.

[0122] In addition, the front end of the dry film processing module 1 is equipped with an injection island for injection molding contact lens shell molds. The injection island can be connected to the production line to reduce the inventory of shell molds, or arranged independently as a group of injection islands to form a multi-line shell mold centralized supply layout.

[0123] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A continuous online production method for contact lenses, the continuous online production system for contact lenses comprising a dry lens processing module (1), a wet lens processing module (2), a sterilization processing module (3), and an outsourcing processing module (4), characterized in that, The method includes the following steps: A. Adaptation and Preparation: Select the corresponding module according to the processing requirements of contact lenses; B. Module connection: A material rack mechanism is set between two adjacent modules to connect and communicate with each other. Several material rack mechanisms can connect several modules in series. C. Inspection and caching operation: When the semi-finished product enters the next adjacent module through the material rack mechanism from the set module, the semi-finished product is inspected and cached. After inspection, unqualified semi-finished products are removed. Several modules are in continuous operation. The semi-finished products output from each module enter the corresponding cache area. After the semi-finished products are buffered in the cache area, the speed at which the semi-finished products enter the next module can be controlled. Furthermore, during the continuous operation of steps A to C, the products and / or semi-finished products are all circulated within a closed space. The circulation within the closed space means that the products and / or semi-finished products do not flow back to the production line after they are taken offline during the continuous production process. The dry film processing module (1) includes a pad printing unit and a forming unit (1b). The pad printing unit and the forming unit (1b) are connected by a material rack mechanism (6). The forming unit (1b) includes a glue injection area, a curing area (1b2) and a peeling area (1b3). The curing area (1b2) and the peeling area (1b3) are adjacent and centrally located. The curing area (1b2) is located between the glue injection area and the peeling area (1b3). The pad printing unit and the glue injection area, as well as the glue injection area and the curing area (1b2) are both provided with material rack mechanisms (6).

2. A production system employing the continuous online production method for contact lenses as described in claim 1, the system comprising a dry lens processing module (1), a wet lens processing module (2), a sterilization processing module (3), and an outsourcing processing module (4), characterized in that, The output ends of the above-mentioned dry sheet operation module (1), wet sheet operation module (2) and sterilization operation module (3) are all equipped with transfer buffer mechanism (5), and there is a material rack mechanism (6) between several adjacent modules. The above-mentioned transfer buffer mechanism (5) can send the semi-finished product from the previous module to the next adjacent module through the material rack mechanism (6) according to the set conveying speed and conveying amount.

3. The continuous online production system for contact lenses according to claim 2, characterized in that, The dry tablet operation module (1), wet tablet operation module (2), sterilization operation module (3) and outsourcing operation module (4) are all independent modules. Adjacent modules are connected by a material rack mechanism (6), and under the action of the material rack mechanism (6), the semi-finished product can be stably moved from the previous module to the next adjacent module.

4. The continuous online production system for contact lenses according to claim 2, characterized in that, The transfer and buffer mechanism (5) includes an infeed robot (5a), a turntable (5b) and an outfeed robot (5c). Each module has a support. The infeed robot (5a), the turntable (5b) and the outfeed robot (5c) are all connected to the corresponding support. The infeed robot (5a) and the outfeed robot (5c) are located on both sides of the turntable (5b). The turntable (5b) has a fixture (5b1) for storing semi-finished products.

5. The continuous online production system for contact lenses according to claim 4, characterized in that, The number of fixtures (5b1) is several, and the fixtures (5b1) are evenly distributed circumferentially on the upper part of the turntable (5b).

6. The continuous online production system for contact lenses according to claim 5, characterized in that, The bracket has a drive unit for intermittently rotating the turntable (5b). Each time the turntable (5b) rotates intermittently, the feeding robot (5a) and the discharging robot (5c) can each face a corresponding fixture (5b1).

7. The continuous online production system for contact lenses according to claim 6, characterized in that, The feeding robot (5a) has several clamping parts 1, each clamping part 1 can clamp a corresponding semi-finished product. The fixture has positioning parts that correspond one-to-one with the clamping parts 1 and are used to position the semi-finished product. The discharging robot has several clamping parts 2, the number of clamping parts 2 is the same as the number of clamping parts 1 and they are set one-to-one.

8. The continuous online production system for contact lenses according to claim 7, characterized in that, The bracket also has a detection mechanism (7) and a rejection mechanism (8). After the turntable (5b) rotates intermittently, the fixtures (5b1) on it can enter the detection mechanism (7) one by one. When the detection mechanism (7) detects that there are unqualified semi-finished products in the corresponding fixtures (5b1), the rejection mechanism can remove the corresponding unqualified products from the fixtures (5b1).

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