Hydration device and hydration method for contact lenses

Abstract

The invention discloses a hydration device and a hydration method for contact lenses, and belongs to the technical field of contact lens production. The two first lifting mechanisms are oppositely mounted in the hydration tank; the two ends of the bottom of the lens placing frame are detachably connected with the tops of the two first lifting mechanisms respectively, and the first lifting mechanisms drive the lens placing frame to move up and down in the hydration tank; the plurality of second lifting mechanisms arranged in an array are mounted in the hydration tank; the plurality of second lifting mechanisms are arranged in one-to-one correspondence with the plurality of contact lenses in the lens placing frame; the liquid injection mechanism is movably arranged at the top of the hydration tank through a first movable workbench; and the lens transfer mechanism is movably arranged at the top of the hydration tank through a second movable workbench and corresponds to the lens placement frame. The full-process automation of contact lens hydration is realized, and the efficiency, uniformity and product consistency of contact lens hydration are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of contact lens manufacturing technology, specifically relating to a hydration device and hydration method for contact lenses. Background Technology

[0002] Contact lenses undergo a hydration process during production to transform them from a dry state into a usable state with suitable water content and elasticity.

[0003] Traditional hydration processes often involve static soaking or manual operation, resulting in low hydration efficiency, excessive manual intervention, and easy lens contamination, severely impacting product yield. While some automated hydration equipment exists, it suffers from drawbacks such as complex structure, low positioning accuracy, imprecise process control, and inconvenient lens handling. Therefore, it is necessary to provide a highly automated, effective, easy-to-operate, and batch-processable contact lens hydration device and method. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides a hydration device and a hydration method for contact lenses, adopting the following technical solution: A hydration device for contact lenses, comprising: Hydration tank; Two first lifting mechanisms are installed opposite to each other inside the hydration tank; The lens holder has its bottom ends detachably connected to the tops of the two first lifting mechanisms, and the first lifting mechanisms drive the lens holder to move up and down in the hydration tank. Multiple second lifting mechanisms are installed in the hydration tank in an array; each of the multiple second lifting mechanisms corresponds to a single contact lens in the lens holder, and the second lifting mechanism is used to push the contact lens in the lens holder upward. The liquid injection mechanism is movably mounted on the top of the hydration tank via a first movable worktable; A lens transfer mechanism is movably mounted on top of the hydration tank via a second movable worktable and is correspondingly mounted to the lens placement rack. The liquid injection mechanism and the lens transfer mechanism move alternately on top of the hydration tank. The liquid injection mechanism is used to inject liquid into the contact lenses in the lens holder, and the lens transfer mechanism is used to remove the hydrated contact lenses from the lens holder.

[0005] Furthermore, the first lifting mechanism includes a first electric telescopic rod; two first electric telescopic rods are installed in the hydration tank and are arranged opposite each other at both ends of the bottom of the lens holder; the output end of the first electric telescopic rod is connected to the lens holder through a support plate to drive the lens holder to move up and down in the hydration tank; a central controller is provided on the hydration tank, and the central controller is electrically connected to the first electric telescopic rod.

[0006] Furthermore, the lens holder includes a lens placement plate and multiple lens placement tubes; the lens placement plate has multiple lens placement holes arranged in an array; the multiple lens placement tubes are arranged one-to-one with the multiple lens placement holes; the sidewalls of the lens placement holes have multiple sliding grooves arranged in a circular array; the outer wall of the lens placement tubes is connected to multiple sliding blocks arranged in a circular array, and the sliding blocks slide in cooperation with the sliding grooves; the bottom of the lens placement tubes has a tube hole for supporting contact lenses.

[0007] Furthermore, the inner wall of the cylindrical hole is arc-shaped to fit the bottom of the contact lens.

[0008] Furthermore, the second lifting mechanism includes a second electric telescopic rod; the second electric telescopic rod is installed in the hydration tank, and multiple second electric telescopic rods are arranged in an array, corresponding one-to-one with multiple lens placement cylinders; the second electric telescopic rod is electrically connected to the central controller and is used to push the lens placement cylinder to move in the lens placement hole.

[0009] Furthermore, the liquid injection mechanism includes a first visual sensor, a liquid storage tank, a connecting pipe, multiple liquid injection pumps, and multiple liquid injection heads; the liquid injection heads are installed at the bottom of the liquid storage tank, and the multiple liquid injection heads are arranged one-to-one with the multiple lens placement cylinders; the liquid injection pumps are located inside the liquid storage tank, and the multiple liquid injection pumps are arranged one-to-one with the multiple liquid injection heads; one end of the connecting pipe is connected to the liquid injection pump, and the other end passes through the liquid storage tank and is connected to the inlet of the liquid injection head; a first electric valve is installed on the connecting pipe, and the first electric valve is electrically connected to the central controller; the first visual sensor is installed at the bottom of the liquid storage tank and is electrically connected to the controller of the first moving worktable to realize the positioning of the liquid injection head and the lens placement cylinder.

[0010] Furthermore, the lens transfer mechanism includes a lens transfer seat, a second visual sensor, a vacuum pump, an air tube, and multiple vacuum nozzles; the vacuum pump is mounted on the lens transfer seat, and the array of multiple vacuum nozzles is arranged at the bottom of the lens transfer seat, with each vacuum nozzle connected to the vacuum pump via the air tube. A second electric valve is mounted on the air tube and is electrically connected to a central controller; the second visual sensor is mounted at the bottom of the lens transfer seat and electrically connected to the controller of the second moving worktable to achieve positioning of the vacuum nozzles and the lens placement cylinder.

[0011] Furthermore, it also includes an electrode mechanism; the electrode mechanism includes a positive electrode, a negative electrode, and a power source; the positive electrode and the negative electrode are symmetrically arranged in the hydration tank about the first electric telescopic rod; the power source is installed on the outer wall of the hydration tank; the positive electrode is connected to the positive terminal of the power source through a wire, and the negative electrode is connected to the negative terminal of the power source through a wire.

[0012] Furthermore, the hydration device for the contact lens also includes a heating mechanism; the heating mechanism includes a temperature sensor and multiple electric heating elements; the multiple electric heating elements are disposed in the hydration tank and arrayed on the inner wall of the hydration tank; the temperature sensor is installed on the inner wall of the hydration tank; the electric heating elements and the temperature sensor are electrically connected to the central controller to detect and control the temperature of the hydration liquid in the hydration tank.

[0013] Furthermore, a hydration method for contact lenses, which is a hydration method using the hydration device for contact lenses described in any of the above claims, the hydration method comprising the following steps: S1. The vacuum suction head picks up the unhydrated contact lens. The second moving worktable moves to the top of the hydration tank and is detected and positioned by the second vision sensor, so that multiple vacuum suction heads correspond one-to-one with multiple lens placement tubes. The vacuum suction head puts the unhydrated contact lens into the lens placement tube. S2. The second moving worktable moves away from the top of the hydration tank, and the first moving stage moves to the top of the hydration tank. The first vision sensor detects and positions the tank, so that multiple injection heads are set up one-to-one with multiple lens placement tubes. The injection heads inject hydration solution into the unhydrated contact lenses in the lens placement tubes, so that the bottom of the unhydrated contact lenses fits against the inner wall of the tube hole of the lens placement tube. After the injection is completed, the first moving worktable moves away from the top of the hydration tank. S3. Start the first electric telescopic rod, and the lens placement plate moves downward until the liquid level of the hydration liquid in the hydration tank completely covers the lens placement plate. S4. Perform hydration treatment on the contact lenses, activate the electrode mechanism, apply DC or pulse voltage to form a stable electric field; activate the heating mechanism to heat the hydration solution to the set temperature through the electric heating pad; during the hydration process, the electric field causes water molecules and ions in the hydration solution to migrate directionally into the lens, accelerating swelling; S5. The central controller shuts off the electric field and heating respectively. After ensuring that the electric field dissipates, the first electric telescopic rod is activated to move the lens placement plate upward until the lens placement plate is completely exposed on the surface of the hydration solution. The second electric telescopic rod is activated and moves upward to abut against the bottom of the lens placement tube, pushing the lens placement tube upward in the lens placement hole until the lens placement tube is pushed to the appropriate position. At this time, the hydrated contact lens is exposed. S6. The second moving worktable moves above the hydration tank and is detected and positioned by the second vision sensor, so that multiple vacuum suction heads correspond one-to-one with multiple lens placement cylinders. The second moving worktable moves downward, and the vacuum suction heads pick up the hydrated contact lenses and transfer them to the next process.

[0014] The contact lens hydration device provided by this invention has the following beneficial effects: (1) The lens placement tube, the first lifting mechanism and the second lifting mechanism are designed together to achieve stable support and smooth removal of the lens, making it convenient to pick up and put down. It is suitable for batch processing, and the entire process of liquid injection, hydration and lens removal is automated, reducing manual intervention and improving production efficiency.

[0015] (2) Temperature, electric field, liquid injection and lifting actions are centrally controlled by the central controller, so that the parameters of the hydration process can be adjusted and the status can be monitored, thereby improving the stability of the process.

[0016] (3) Combining electric field assistance and heating control promotes the directional migration of water molecules, making the lens hydration more uniform and swelling more complete, thus improving product consistency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the hydration device and the liquid injection mechanism of the contact lens of the present invention. Figure 2 This is a schematic diagram of the overall structure of the contact lens hydration device and lens transfer mechanism of the present invention when they are correspondingly arranged. Figure 3 This is a side view of the lens transfer mechanism of the hydration device for contact lenses of the present invention; Figure 4 This is a schematic diagram of the internal structure of the hydration device for contact lenses according to the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the internal structure of the hydration device for contact lenses according to the present invention. Figure 2; Figure 6 This is a top view of the internal structure of the hydration device for contact lenses according to the present invention; Figure 7 This is a schematic diagram of the lens placement tube of the contact lens hydration device of the present invention; Figure 8 This is a schematic diagram of the lens placement plate of the contact lens hydration device of the present invention; The components include: 1. Hydration tank; 2. Lens placement plate; 3. Lens transfer seat; 4. Second electric telescopic rod; 5. Injection head; 6. Liquid storage tank; 7. Vacuum suction head; 8. Positive electrode; 9. Lens placement cylinder; 10. Cylinder hole; 11. Negative electrode; 12. First electric telescopic rod; 13. Sliding block; 14. Support plate. Detailed Implementation

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below.

[0019] Example 1

[0020] Reference Figures 1 to 8 A hydration device for contact lenses, comprising: Hydration tank 1; Two first lifting mechanisms are installed opposite to each other inside the hydration tank 1; The lens holder has two detachable connections at the bottom ends to the tops of two first lifting mechanisms. The first lifting mechanisms drive the lens holder to move up and down within the hydration tank 1. Multiple second lifting mechanisms are installed in the hydration tank 1 in an array; each of the multiple second lifting mechanisms corresponds to a single contact lens in the lens holder, and the second lifting mechanism is used to push the contact lens in the lens holder upward. The liquid injection mechanism is movably mounted on the top of the hydration tank 1 via a first movable worktable; The lens transfer mechanism is movably mounted on the top of the hydration tank 1 via a second movable worktable and is correspondingly mounted to the lens placement rack. The liquid injection mechanism and the lens transfer mechanism move alternately on top of the hydration tank 1. The liquid injection mechanism is used to inject liquid into the contact lenses in the lens holder, and the lens transfer mechanism is used to remove the hydrated contact lenses from the lens holder.

[0021] In this embodiment, the first lifting mechanism includes a first electric telescopic rod 12; the two first electric telescopic rods 12 are installed in the hydration tank 1 and are arranged opposite each other at both ends of the bottom of the lens holder; the output end of the first electric telescopic rod 12 is connected to the lens holder through the support plate 14 to drive the lens holder to move up and down in the hydration tank 1; a central controller is provided on the hydration tank and is electrically connected to the first electric telescopic rod 12.

[0022] In this embodiment, the lens holder includes a lens placement plate 2 and multiple lens placement cylinders 9; the lens placement plate 2 has multiple lens placement holes arranged in an array; the multiple lens placement cylinders 9 are arranged one-to-one with the multiple lens placement holes; the sidewalls of the lens placement holes have multiple sliding grooves arranged in a circular array; the outer wall of the lens placement cylinder 9 is connected to multiple sliding blocks 13 arranged in a circular array, and the sliding blocks 13 slide in cooperation with the sliding grooves; the bottom of the lens placement cylinder 9 is provided with a cylinder hole 10, which is used to support contact lenses.

[0023] Through the above technical solution, the cooperation between the sliding block 13 and the sliding groove ensures that the lens placement cylinder 9 moves smoothly, while preventing the lens placement cylinder 9 from falling out of the lens placement hole.

[0024] In this embodiment, the inner wall of the bore 10 is arc-shaped to fit the bottom of the contact lens.

[0025] Through the above technical solution, the independent lens placement tube 9 of the lens placement holder provides a dedicated placement space for each contact lens, effectively preventing the lenses from sticking together or colliding and abrading during the hydration process. At the same time, the arc-shaped inner wall of the tube hole 10 fits snugly against the bottom of the contact lens, further ensuring the stability of the lens shape and significantly reducing the probability of lens scratches, breakage, and deformation, thus significantly improving the product qualification rate.

[0026] In this embodiment, the second lifting mechanism includes a second electric telescopic rod 4; the second electric telescopic rod 4 is installed in the hydration tank 1, and multiple second electric telescopic rods 4 are arranged in an array and correspond one-to-one with multiple lens placement cylinders 9; the second electric telescopic rod 4 is electrically connected to the central controller and is used to push the lens placement cylinder 9 to move in the lens placement hole.

[0027] In this embodiment, the liquid injection mechanism includes a first visual sensor, a liquid storage tank 6, a connecting pipe, multiple liquid injection pumps (not shown in the figure), and multiple liquid injection heads 5. The liquid injection heads 5 are installed at the bottom of the liquid storage tank 6, and the multiple liquid injection heads 5 are arranged one-to-one with the multiple lens placement cylinders 9. The liquid injection pumps are installed inside the liquid storage tank 6, and the multiple liquid injection pumps are arranged one-to-one with the multiple liquid injection heads 5. One end of the connecting pipe is connected to the liquid injection pump, and the other end passes through the liquid storage tank 6 and is connected to the inlet of the liquid injection head 5. A first electric valve is installed on the connecting pipe, and the first electric valve is electrically connected to the central controller. The first visual sensor is installed at the bottom of the liquid storage tank 6 and is electrically connected to the controller of the first moving worktable to realize the positioning of the liquid injection head 5 and the lens placement cylinder 9.

[0028] In this embodiment, the lens transfer mechanism includes a lens transfer seat 3, a second visual sensor, a vacuum pump (not shown in the figure), an air pipe (not shown in the figure), and multiple vacuum nozzles 7. The vacuum pump is installed on the lens transfer seat 3, and the multiple vacuum nozzles 7 are arrayed at the bottom of the lens transfer seat 3. The vacuum nozzles 7 are connected to the vacuum pump through the air pipe, and a second electric valve is installed on the air pipe. The second electric valve is electrically connected to the central controller. The second visual sensor is installed at the bottom of the lens transfer seat 3 and is electrically connected to the controller of the second moving worktable to realize the positioning of the vacuum nozzles 7 and the lens placement cylinder 9.

[0029] In this embodiment, an electrode mechanism is also included; the electrode mechanism includes a positive electrode 8, a negative electrode 11, and a power source (not shown in the figure); the positive electrode 8 and the negative electrode 11 are symmetrically arranged in the hydration tank 1 about the first electric telescopic rod 12; the power source is installed on the outer wall of the hydration tank 1; the positive electrode 8 is connected to the positive terminal of the power source through a wire, and the negative electrode 11 is connected to the negative terminal of the power source through a wire.

[0030] In this embodiment, the hydration device for contact lenses further includes a heating mechanism; the heating mechanism includes a temperature sensor and multiple electric heating elements (not shown in the figure); the multiple electric heating elements are disposed in the hydration tank 1 and are arrayed on the inner wall of the hydration tank 1; the temperature sensor is installed on the inner wall of the hydration tank 1; the electric heating elements and the temperature sensor are electrically connected to the central controller to detect and control the temperature of the hydration liquid in the hydration tank 1.

[0031] Through the above technical solution, the stable electric field formed by the electrode mechanism promotes the directional migration of water molecules and ions in the hydration solution into the lens. Compared with the traditional natural diffusion method, this greatly accelerates the lens swelling process and shortens the hydration time. Combined with the precise temperature control of the heating mechanism, it ensures that the temperature of the hydration solution is uniform and stable, so that the degree of hydration in all parts of the lens is consistent, avoiding problems such as excessive hardness in some areas and insufficient oxygen permeability, thereby improving the product's optical performance and wearing comfort.

[0032] Example 2

[0033] A hydration method for contact lenses, specifically the hydration method of the contact lens hydration device of Example 1, includes the following steps: S1. The vacuum suction head 7 picks up the unhydrated contact lens, and the second moving worktable moves to the top of the hydration tank 1. The second vision sensor detects and positions the lens, so that multiple vacuum suction heads 7 correspond one-to-one with multiple lens placement tubes 9. The vacuum suction head 7 puts the unhydrated contact lens into the lens placement tube 9. S2. The second moving worktable moves away from the top of the hydration tank 1, and the first moving stage moves to the top of the hydration tank 1. The first vision sensor detects and positions the surface, so that multiple injection heads 5 are set up one-to-one with multiple lens placement cylinders 9. The injection heads 5 inject hydration solution into the unhydrated contact lenses in the lens placement cylinders 9, so that the bottom of the unhydrated contact lenses fits against the inner wall of the cylinder hole 10 of the lens placement cylinder 9. After the injection is completed, the first moving worktable moves away from the top of the hydration tank 1. S3. Start the first electric telescopic rod 12, and the lens placement plate 2 moves downward until the liquid level of the hydration liquid in the hydration tank 1 completely covers the lens placement plate 2. S4. Perform hydration treatment on the contact lenses, activate the electrode mechanism, apply DC or pulse voltage to form a stable electric field; activate the heating mechanism to heat the hydration solution to the set temperature through the electric heating pad; during the hydration process, the electric field causes water molecules and ions in the hydration solution to migrate directionally into the lens, accelerating swelling; S5. The central controller shuts off the electric field and heating respectively. After waiting for a period of time (this time is a preset time) to ensure that the electric field dissipates, the first electric telescopic rod 12 is activated to move the lens placement plate 2 upward until the lens placement plate 2 is completely exposed on the surface of the hydration solution. The second electric telescopic rod 4 is activated, and the second electric telescopic rod 4 moves upward and abuts against the bottom of the lens placement cylinder 9, pushing the lens placement cylinder 9 upward in the lens placement hole until the lens placement cylinder 9 is pushed to the appropriate position. At this time, the hydrated contact lens is exposed. S6. The second moving worktable moves above the hydration tank 1 and is detected and positioned by the second vision sensor, so that multiple vacuum suction heads 7 correspond one-to-one with multiple lens placement cylinders 9. The second moving worktable moves downward, and the vacuum suction heads 7 pick up the hydrated contact lenses and transfer the hydrated contact lenses to the next process.

[0034] Through the above technical solution, the liquid injection mechanism and the lens transfer mechanism work alternately through a moving worktable, and achieve precise positioning with the help of a vision sensor. No manual intervention is required throughout the process, realizing full automation of the contact lens loading, liquid injection, hydration and transfer process. The central controller coordinates the collaborative work of each mechanism, reduces the process connection time and human operation error, significantly improves production efficiency, and prevents the risk of lens contamination caused by human contact. Key parameters such as electric field strength and hydration temperature can be flexibly adjusted through a central controller, enabling customized hydration solutions to meet the needs of contact lenses of different materials and specifications.

[0035] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A hydration device for contact lenses, characterized in that, include: Hydration tank; Two first lifting mechanisms are installed opposite to each other inside the hydration tank; The lens holder has its bottom ends detachably connected to the tops of the two first lifting mechanisms, and the first lifting mechanisms drive the lens holder to move up and down in the hydration tank. Multiple second lifting mechanisms are installed in the hydration tank in an array; each of the multiple second lifting mechanisms corresponds to a single contact lens in the lens holder, and the second lifting mechanism is used to push the contact lens in the lens holder upward. The liquid injection mechanism is movably mounted on the top of the hydration tank via a first movable worktable; A lens transfer mechanism is movably mounted on top of the hydration tank via a second movable worktable and is correspondingly mounted to the lens placement rack. The liquid injection mechanism and the lens transfer mechanism move alternately on top of the hydration tank. The liquid injection mechanism is used to inject liquid into the contact lenses in the lens holder, and the lens transfer mechanism is used to remove the hydrated contact lenses from the lens holder.

2. The hydration device for contact lenses according to claim 1, characterized in that, The first lifting mechanism includes a first electric telescopic rod; two first electric telescopic rods are installed in the hydration tank and are arranged opposite each other at both ends of the bottom of the lens holder; the output end of the first electric telescopic rod is connected to the lens holder through a support plate to drive the lens holder to move up and down in the hydration tank; a central controller is provided on the hydration tank, and the controller is electrically connected to the first electric telescopic rod.

3. The hydration device for contact lenses according to claim 2, characterized in that, The lens holder includes a lens placement plate and multiple lens placement tubes; the lens placement plate has multiple lens placement holes arranged in an array; the multiple lens placement tubes are arranged one-to-one with the multiple lens placement holes; the sidewalls of the lens placement holes have multiple sliding grooves arranged in a circular array; the outer walls of the lens placement tubes are connected to multiple sliding blocks arranged in a circular array, and the sliding blocks slide in cooperation with the sliding grooves; the bottom of the lens placement tubes has a tube hole for supporting contact lenses.

4. The hydration device for contact lenses according to claim 3, characterized in that, The inner wall of the cylindrical hole is arc-shaped to fit the bottom of the contact lens.

5. The hydration device for contact lenses according to claim 3, characterized in that, The second lifting mechanism includes a second electric telescopic rod; the second electric telescopic rod is installed in the hydration tank, and multiple second electric telescopic rods are arranged in an array, corresponding one-to-one with multiple lens placement cylinders; the second electric telescopic rod is electrically connected to the central controller and is used to push the lens placement cylinder to move in the lens placement hole.

6. The hydration device for contact lenses according to claim 5, characterized in that, The liquid injection mechanism includes a first visual sensor, a liquid storage tank, a connecting pipe, multiple injection pumps, and multiple injection heads. The injection heads are installed at the bottom of the liquid storage tank, and each injection head corresponds to one of the multiple lens placement cylinders. The injection pumps are located inside the liquid storage tank, and each injection pump corresponds to one of the multiple injection heads. One end of the connecting pipe is connected to the injection pump, and the other end passes through the liquid storage tank and connects to the inlet of the injection head. A first electric valve is installed on the connecting pipe and is electrically connected to the central controller. The first visual sensor is installed at the bottom of the liquid storage tank and is electrically connected to the controller of the first moving worktable to achieve positioning of the injection heads and the lens placement cylinders.

7. The hydration device for contact lenses according to claim 6, characterized in that, The lens transfer mechanism includes a lens transfer seat, a second vision sensor, a vacuum pump, an air tube, and multiple vacuum nozzles. The vacuum pump is mounted on the lens transfer seat, and the array of multiple vacuum nozzles is arranged at the bottom of the lens transfer seat. The vacuum nozzles are connected to the vacuum pump through the air tube, and a second electric valve is installed on the air tube. The second electric valve is electrically connected to the central controller. The second vision sensor is mounted at the bottom of the lens transfer seat and electrically connected to the controller of the second moving worktable to achieve positioning of the vacuum nozzles and the lens placement cylinder.

8. The hydration device for contact lenses according to claim 2, characterized in that, It also includes an electrode mechanism; the electrode mechanism includes a positive electrode, a negative electrode and a power source; the positive electrode and the negative electrode are symmetrically arranged in the hydration tank about the first electric telescopic rod; the power source is installed on the outer wall of the hydration tank; the positive electrode is connected to the positive terminal of the power source through a wire, and the negative electrode is connected to the negative terminal of the power source through a wire.

9. The hydration device for contact lenses according to claim 2, characterized in that, The hydration device for the contact lens also includes a heating mechanism; the heating mechanism includes a temperature sensor and multiple electric heating elements; the multiple electric heating elements are disposed in the hydration tank and arrayed on the inner wall of the hydration tank; the temperature sensor is installed on the inner wall of the hydration tank; the electric heating elements and the temperature sensor are electrically connected to the central controller to detect and control the temperature of the hydration liquid in the hydration tank.

10. A method for hydrating contact lenses, characterized in that, A hydration method for a contact lens hydration apparatus according to any one of claims 1 to 9, the hydration method comprising the following steps: S1. The vacuum suction head picks up the unhydrated contact lens. The second moving worktable moves to the top of the hydration tank and is detected and positioned by the second vision sensor, so that multiple vacuum suction heads correspond one-to-one with multiple lens placement tubes. The vacuum suction head puts the unhydrated contact lens into the lens placement tube. S2. The second moving worktable moves away from the top of the hydration tank, and the first moving stage moves to the top of the hydration tank. The first vision sensor detects and positions the tank, so that multiple injection heads are set up one-to-one with multiple lens placement tubes. The injection heads inject hydration solution into the unhydrated contact lenses in the lens placement tubes, so that the bottom of the unhydrated contact lenses fits against the inner wall of the tube hole of the lens placement tube. After the injection is completed, the first moving worktable moves away from the top of the hydration tank. S3. Start the first electric telescopic rod, and the lens placement plate moves downward until the liquid level of the hydration liquid in the hydration tank completely covers the lens placement plate. S4. Perform hydration treatment on the contact lenses, activate the electrode mechanism, apply DC or pulse voltage to form a stable electric field; activate the heating mechanism to heat the hydration solution to the set temperature through the electric heating pad; during the hydration process, the electric field causes water molecules and ions in the hydration solution to migrate directionally into the lens, accelerating swelling; S5. The central controller shuts off the electric field and heating respectively. After ensuring that the electric field dissipates, the first electric telescopic rod is activated to move the lens placement plate upward until the lens placement plate is completely exposed on the surface of the hydration solution. The second electric telescopic rod is activated and moves upward to abut against the bottom of the lens placement tube, pushing the lens placement tube upward in the lens placement hole until the lens placement tube is pushed to the appropriate position. At this time, the hydrated contact lens is exposed. S6. The second moving worktable moves above the hydration tank and is detected and positioned by the second vision sensor, so that multiple vacuum suction heads correspond one-to-one with multiple lens placement cylinders. The second moving worktable moves downward, and the vacuum suction heads pick up the hydrated contact lenses and transfer them to the next process.

Images