Optical lens multi-tank ultrasonic cleaning device and control method thereof

Abstract

This invention discloses a multi-tank ultrasonic cleaning device for optical lenses and its control method, belonging to the field of ultrasonic cleaning technology. The device includes multiple cleaning tanks, an ultrasonic transducer, an ultrasonic generator, and a displacement assembly. A connecting rod is connected to the displacement assembly, and a cleaning frame is connected to the connecting rod. The displacement assembly drives the cleaning frame to move up and down and left and right. A first weighing sensor is installed on the connecting rod. This invention measures the weight of the optical lenses placed on the cleaning frame. When a lens falls, an alarm is triggered to alert the operator. The first weighing sensor is used to control the movement of the cleaning frame based on the deviation value, reducing waiting time and increasing cleaning speed while minimizing the entry of solution from one cleaning tank into the next, reducing solution mixing and ensuring cleaning effectiveness. An inclined intermediate plate is installed between adjacent cleaning tanks to guide dripping solution back into the original cleaning tank, further reducing solution mixing.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic cleaning technology, specifically relating to a multi-slot ultrasonic cleaning device for optical lenses and its control method. Background Technology

[0002] Ultrasonic cleaning is a common method for cleaning optical lenses, widely used after lens grinding, polishing, and coating processes. Multi-tank ultrasonic cleaning equipment can be equipped with multiple cleaning tanks containing different cleaning solutions such as glass cleaner and pure water of varying grades. The cleaning rack carries the optical lenses into different tanks for rough cleaning, semi-fine cleaning, and fine cleaning, greatly improving cleaning efficiency and effectiveness. Therefore, it is widely used. However, existing multi-tank ultrasonic equipment has several drawbacks. If the lenses are not held too loosely on the cleaning rack, they may fall during cleaning, making it difficult for personnel to observe and resulting in losses. Furthermore, some systems have residual solution from the previous cleaning tank on the cleaning rack and optical lenses. Excessive residual solution carried into the next cleaning tank can affect the cleaning effect. Current solutions typically involve waiting a fixed time after lifting the cleaning rack before moving to the next tank. However, this fixed waiting time is subject to error due to variations in the structure of different cleaning racks and optical lenses. Sometimes the waiting time is too short, resulting in too much residual solution; other times, the waiting time is too long, affecting cleaning efficiency. Summary of the Invention

[0003] To address the aforementioned problems in the prior art, the present invention aims to provide a multi-tank ultrasonic cleaning device for optical lenses and its control method, which facilitates monitoring of whether lenses fall off during the cleaning process and reduces the mixing of solutions in different cleaning tanks.

[0004] Technical Solution: To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An optical lens multi-tank ultrasonic cleaning device includes multiple cleaning tanks arranged side by side, an ultrasonic transducer disposed in the cleaning tank, an ultrasonic generator electrically connected to the ultrasonic transducer, and a displacement assembly disposed above the cleaning tank. A connecting rod is connected to the displacement assembly, and a cleaning rack for placing lenses is connected to the connecting rod. The displacement assembly is used to drive the cleaning rack to move up and down and left and right. A first weighing sensor is provided on the connecting rod.

[0006] Preferably, an intermediate plate is provided between two adjacent cleaning tanks in the plurality of cleaning tanks, and the intermediate plate is inclined to guide the liquid on its upper surface to slide down into one of the two adjacent cleaning tanks.

[0007] Preferably, a first support plate is connected to the back of the intermediate plate, and a second support plate is provided between two adjacent cleaning tanks. The first support plate is connected to the second support plate through a second weighing sensor.

[0008] Preferably, both the first and second weighing sensors are electrically connected to the weighing controller.

[0009] Preferably, the cleaning rack is detachably connected to the connecting rod.

[0010] Preferably, the first weighing sensor is an S-type weighing sensor, and the connecting rod includes a first working rod connected to one end of the first weighing sensor and a second working rod connected to the other end of the first weighing sensor.

[0011] Preferably, the displacement assembly includes a first displacement slide and a second displacement slide connected to the first displacement slide. The first displacement slide is used to drive the cleaning rack to move up and down, and the second displacement slide is used to drive the first displacement slide to move left and right.

[0012] The present invention also provides a control method for a multi-slot ultrasonic cleaning device for optical lenses, applied to the aforementioned multi-slot ultrasonic cleaning device for optical lenses, comprising the following steps:

[0013] Step 1: The cleaning rack is located on the connecting rod, and the first weighing sensor is zeroed;

[0014] Step 2: Remove the cleaning rack and place one or more optical lenses inside. Then connect the cleaning rack to the connecting rod. At this time, the first weighing sensor weighs the contents to obtain the initial weight value S.

[0015] Step 3: The displacement component drives the cleaning frame into the solution of the first cleaning tank among the N cleaning tanks. The ultrasonic transducer of the cleaning tank works to clean the optical lenses on the cleaning frame. After cleaning, the displacement component drives the cleaning frame to move upward, and the cleaning frame is removed from the solution in the cleaning tank. The residual solution on the cleaning frame drips continuously.

[0016] Step 4: The displacement component moves the cleaning rack to the top of the intermediate plate between the first and second cleaning tanks. At this time, the first weighing sensor weighs the contents and obtains the first weight value A.

[0017] Step 5: First weight value A - initial weight value S = first deviation value P1, and judge the first deviation value P1;

[0018] When P1 ≤ X%S, the requirement to continue moving forward is met, and the displacement component drives the cleaning rack to continue moving above the second cleaning tank. If P1 > X%S, the requirement to continue moving forward is not met, and the cleaning rack continues to stay above the middle plate. After a period of time T1, the first weighing sensor weighs again to obtain a new first weight value A. The new first deviation value P1 is compared with X%S. If P1 ≤ X%S, the requirement to continue moving forward is met. If not, the process continues to wait for a period of time T1, and the solution continues to drip until P1 ≤ X%S and 1 ≤ X ≤ 5 are met.

[0019] Alternatively, if P1 ≤ Y grams, the requirement to continue moving forward is met, and the displacement component drives the cleaning rack to continue moving above the second cleaning tank. If P1 > Y grams, the requirement to continue moving forward is not met, and the cleaning rack continues to stay above the middle plate. After a period of time T1, the first weighing sensor weighs again to obtain a new first weight value A. If P1 ≤ Y grams, the requirement to continue moving forward is met. If not, the process continues to wait for a period of time T1 until P1 ≤ Y grams and Y ≥ 10 is met.

[0020] Step 6: After the requirement to continue moving forward is met, the displacement component drives the cleaning frame into the solution in the second cleaning tank. The ultrasonic transducer in the cleaning tank works to clean the optical lenses on the cleaning frame. After cleaning, the displacement component drives the cleaning frame to move upward and the cleaning frame is removed from the solution in the cleaning tank.

[0021] Step 7: The displacement component moves the cleaning rack to the top of the intermediate plate between the second and third cleaning tanks. At this time, the first weighing sensor weighs the contents and obtains the first weight value A.

[0022] Step 8: Repeat step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirements for continuing to move forward. The displacement component then drives the cleaning frame into the next cleaning tank.

[0023] Step 9: The displacement component drives the cleaning frame through multiple cleaning tanks for ultrasonic cleaning. When the displacement component drives the cleaning frame to move above the intermediate plate between the (N-1)th and Nth cleaning tanks, the first weighing sensor weighs the frame to obtain the first weight value A. The first deviation value P1 is judged in step 5 until the first deviation value P1 meets the requirement to continue moving forward. Then the displacement component drives the cleaning frame into the Nth cleaning tank.

[0024] Step 10: After the cleaning rack passes through N cleaning tanks, the displacement component moves the cleaning rack upwards, the cleaning rack is removed from the solution in the cleaning tank, and the cleaning rack is taken off the connecting rod to obtain the optical lens after multiple cleaning processes.

[0025] Preferably, when the cleaning rack is located above the intermediate plate, the second weighing sensor weighs the solution dripping onto the surface of the intermediate plate to obtain a first load value B, and sets an alarm value J. When B ≥ J, an alarm is issued.

[0026] Preferably, when the first weight value A is less than the initial weight value S, an alarm is issued directly.

[0027] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0028] 1. By installing a first weighing sensor on the connecting rod, the weight of the optical lenses placed on the cleaning rack can be measured during operation. When a lens falls, an alarm can be triggered to remind the staff.

[0029] 2. During the process of the cleaning rack moving to the next cleaning tank, the first weighing sensor is used to weigh and control whether the cleaning rack continues to move based on the deviation value. This method is applicable to different cleaning racks and optical lenses. It reduces waiting time and increases cleaning speed while reducing the amount of solution from the previous cleaning tank entering the next cleaning tank, thus reducing solution mixing and ensuring cleaning effect.

[0030] 3. Whether to continue moving can be determined by ratio or absolute value, which is applicable to different cleaning racks and optical lenses;

[0031] 4. An inclined intermediate plate is installed between two adjacent cleaning tanks to guide the dripping solution to slide back into the original cleaning tank, reducing solution mixing;

[0032] 5. A second weighing sensor is installed below the middle plate, which can trigger an alarm in case of abnormal situations such as lens falling off. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the device structure according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure at the connecting rod in the embodiment;

[0035] Figure 3 This is a schematic diagram of the hook structure in an embodiment;

[0036] Figure 4 This is a schematic diagram of the structure at the intermediate plate in the embodiment;

[0037] Figure 5 This is a schematic diagram of another working state of the device in the embodiment. Detailed Implementation

[0038] The present invention will be further illustrated below with reference to specific embodiments. These embodiments are implemented based on the technical solutions of the present invention, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0039] like Figure 1 and Figure 5 As shown, an optical lens multi-tank ultrasonic cleaning device includes a cleaning tank 1, an ultrasonic transducer 21, an ultrasonic generator 22, and a displacement assembly. N cleaning tanks 1 are arranged side-by-side, where N≥3. In this embodiment, N=3. The cleaning tank 1 is a box-shaped structure with an open top. The interior of the cleaning tank 1 is used to contain a solution. Different solutions can be used in different cleaning tanks 1, such as glass cleaner, surfactant cleaning solution, or distilled water. The ultrasonic transducer 21 is a wall-mounted transducer. Multiple ultrasonic transducers 21 are respectively mounted on the inner wall of the cleaning tank 1 via brackets. The mounting positions of the ultrasonic transducers 21 in different cleaning tanks 1 can be different. Multiple ultrasonic transducers are installed inside the ultrasonic transducer 21, converting input electrical energy into mechanical energy, i.e., ultrasonic waves, to clean objects inside the cleaning tank 1. The ultrasonic generator 22 is located outside the cleaning tank 1 and is electrically connected to the multiple ultrasonic transducers 21 via wires to provide electrical energy to the ultrasonic transducers 21 to drive their operation.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, the displacement assembly is positioned above the cleaning tank 1. The displacement assembly includes a first displacement slide 3 and a second displacement slide 4. The second displacement slide 4 is horizontally positioned above the cleaning tank 1. The second displacement slide 4 includes a second slide base 41, a second lead screw 42, a second driver 43, and a second slide 44. The second slide base 41 is horizontally positioned and its two ends are connected to the outer wall of the cleaning tank 1 through two support legs. The second lead screw 42 is positioned on the second slide base 41 and is rotatably connected to the second slide base 41. The second driver 43 is positioned at one end of the second slide base 41 and is connected to the second lead screw 42. The second driver 43 includes a second motor and a second reducer. The second driver 43 drives the second lead screw 42 to rotate. The second slide 44 is movably connected to the second lead screw 42. When the second lead screw 42 rotates, it drives the second slide 44 to slide left and right. Under the drive of the second driver 43, the second slide 44 slides left and right on the second slide base 41. The first displacement slide 3 includes a first slide base 31, a first lead screw 32, a first driver 33, and a first slide 34. The first slide base 31 is vertically arranged and connected to the second slide 44, so that when the second slide 44 moves left and right, it drives the first slide base 31 to move left and right. The first lead screw 32 is arranged on the first slide base 31 and is rotatably connected to the first slide base 31. The first driver 33 is arranged at one end of the first slide base 31 and is connected to the first lead screw 32. The first driver 33 includes a first motor and a first reducer. The first driver 33 drives the first lead screw 32 to rotate. The first slide 34 is movably connected to the first lead screw 32. When the first lead screw 32 rotates, it drives the first slide 34 to slide up and down.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, a connecting rod 5 is connected to the first slide 34. The first displacement slide 3 drives the connecting rod 5 to move up and down, and the second displacement slide 4 drives the connecting rod 5 to move left and right. The lower end of the connecting rod 5 is connected to the cleaning rack 6, which is used to place optical lenses to be cleaned. The cleaning rack 6 adopts an existing Teflon cleaning rack, which uses multiple clamping strips to clamp multiple optical lenses in pairs, and a support strip is set below to support the optical lenses. Multiple rows of optical lenses waiting to be cleaned can be placed on the cleaning rack 6. The lower end of the connecting rod 5 is provided with a hook 53, and a hanging plate 65 is provided on one side of the cleaning rack 6. The hanging plate 65 has a hanging hole corresponding to the hook 53. In use, the cleaning rack 6 is connected to the connecting rod 5 by hooking the hook 53 into the hanging hole. The detachable connection between the cleaning rack 6 and the connecting rod 5 allows the cleaning rack 6 to be placed or removed easily. After the cleaning rack 6 is connected to the connecting rod 5, the first displacement slide 3 drives the cleaning rack 6 to move up and down, and the second displacement slide 4 drives the cleaning rack 6 to move left and right.

[0042] like Figure 1 , Figure 2 and Figure 5 As shown, a first weighing sensor 81 is provided on the connecting rod 5. The connecting rod 5 includes an upper first working rod 51 and a lower second working rod 52. The upper end of the first working rod 51 is connected to the first slide table 34. The first weighing sensor 81 is an S-type weighing sensor. The lower end of the first working rod 51 is connected to the upper end of the first weighing sensor 81. The upper end of the second working rod 52 is connected to the lower end of the first weighing sensor 81. The lower end of the second working rod 52 is connected to the cleaning rack 6 through a hook 53. Thus, when the first weighing sensor 81 is working, it can measure the weight of the optical lens placed on the cleaning rack 6. When the weight is lower than the initial weight, an alarm can be issued to remind the staff that a lens has fallen.

[0043] like Figure 1 , Figure 4 and Figure 5As shown, an intermediate plate 7 is provided between two adjacent cleaning tanks 1 in N cleaning tanks 1. The intermediate plate 7 is inclined to guide the liquid on its upper surface to slide down into one of the two adjacent cleaning tanks 1. The intermediate plate 7 is also used to guide the liquid dripping from the cleaning rack 6 back to the previous cleaning tank 1 in the cleaning sequence. In this embodiment, the cleaning sequence is from right to left, and the intermediate plate 7 is inclined to the right to guide the dripping liquid to slide down into the cleaning tank 1 on the right. A second support plate 73 is provided between two adjacent cleaning tanks 1. The second support plate 73 is provided with two second weighing sensors 82 (the number can also be set to three or four, depending on the needs). The second weighing sensors 82 are existing cantilever beam sensors. The back of the intermediate plate 7 is connected to the first support plate 72. The upper end face of the first support plate 72 is connected to the back of the intermediate plate 7, and the lower end face of the first support plate 72 is horizontally set and connected to the second weighing sensors 82. The first support plate 72 is connected to the second support plate 73 through the second weighing sensors 82, so that the two second weighing sensors 82 can measure the weight of the liquid dripping from above the intermediate plate 7 in real time. A side baffle 71 is also connected to the back of the intermediate plate 7. The lower end of the side baffle 71 extends downward to a height lower than the second weighing sensor 82. The side baffle 71 can prevent external water droplets from splashing onto the second weighing sensor 82, thus protecting the second weighing sensor 82. Both the first weighing sensor 81 and the second weighing sensor 82 are electrically connected to the weighing controller 8. The weighing controller 8 is placed on the workbench. The weighing controller 8 uses existing weighing control instruments, such as the TYC802 industrial-grade weighing controller all-in-one machine from Diping Zhike, which integrates weighing, display, communication and control. It has a small footprint and is easy to install. 7-inch and 10-inch touch screens are available. The working power supply is 12-24V. It supports 2 independent weighing channels and up to 6 sensors. The sensor wiring method is four-wire or six-wire. The A / D output rate is adjustable from 6.25 to 100Hz. It is equipped with RS485 and ModBus-RTU protocol as standard. It has functions such as tare, empty scale, zeroing, zero point tracking, and overload alarm. The working environment is 0-60℃. The weighing controller 8 is connected to the first weighing sensor 81 and the second weighing sensor 82 via cables. The cable of the first weighing sensor 81 passes around the back of the second slide base 41. A cable drag chain parallel to the second slide base 41 can also be set above the second slide base 41 to facilitate the movement of the cable with the sensor.

[0044] This embodiment also provides a control method for a multi-tank ultrasonic cleaning device, applied to the aforementioned multi-tank ultrasonic cleaning device for optical lenses, comprising the following steps:

[0045] Step 1: The cleaning rack 6 is located on the connecting rod 5, and the first weighing sensor 81 is zeroed to achieve the purpose of peeling;

[0046] In this embodiment, the cleaning sequence is set from right to left. The displacement component moves the cleaning frame 6 to the top of the rightmost cleaning tank 1 of the N cleaning tanks 1. In this embodiment, N=3.

[0047] Step 2: Remove the cleaning rack 6 and place multiple optical lenses inside. Then connect the cleaning rack 6 to the connecting rod 5. At this time, the first weighing sensor 81 weighs the sample to obtain the initial weight value S.

[0048] For example, the weight of a single optical lens is D, in this embodiment D = 100 grams. A total of 20 optical lenses are placed on the cleaning rack 6, with an initial weight value S = 20 × 100 = 2000 grams.

[0049] Step 3: The displacement component drives the cleaning frame 6 into the solution of the first cleaning tank 1 of the three cleaning tanks 1. The ultrasonic transducer 21 of the cleaning tank 1 works to clean the optical lenses on the cleaning frame 6. After cleaning, the displacement component drives the cleaning frame 6 to move upward, and the cleaning frame 6 is removed from the solution in the cleaning tank 1. The residual solution on the cleaning frame 6 drips continuously.

[0050] The solution in the first cleaning tank 1 is the first medium. The optical lens is ultrasonically cleaned in the first medium. After the cleaning rack 6 moves up, the first medium remaining on the cleaning rack 6 and the optical lens drips back into the first cleaning tank 1.

[0051] Step 4: The displacement component moves the cleaning rack 6 to the top of the intermediate plate 7 between the first cleaning tank 1 and the second cleaning tank 1. At this time, the first weighing sensor 81 weighs the contents to obtain the first weight value A.

[0052] As liquid continuously drips from the cleaning rack 6 and the optical lens, the weight is constantly changing. The first weight value A is collected after the cleaning rack 6 moves to a predetermined position directly above the intermediate plate 7.

[0053] Step 5: First weight value A - initial weight value S = first deviation value P1, and judge the first deviation value P1;

[0054] There are two ways to judge: one is by ratio, and the other is by absolute value.

[0055] The first method judges based on the ratio. When P1 ≤ X%S, the requirement to continue moving forward is met, and the displacement component drives the cleaning rack 6 to continue moving above the second cleaning tank 1. If P1 > X%S, the requirement to continue moving forward is not met, and the cleaning rack 6 continues to stay above the intermediate plate 7. After a period of time T1, the first weighing sensor 81 weighs again to obtain a new first weight value A. The new first deviation value P1 is compared with X%S. When P1 ≤ X%S, the requirement to continue moving forward is met. If not, the process continues to wait for a period of time T1, and the solution continues to drip until P1 ≤ X%S, 1 ≤ X ≤ 5, and T1 ≥ 5 seconds are met.

[0056] X = 1, X%S = 1%S, since S = 2000 grams and X%S = 20 grams, that is, when the weight of the first medium liquid remaining on the cleaning rack 6 and the lens is greater than 20 grams, the cleaning rack 6 will not continue to move forward and will wait for a stage time T1, T1 = 5 seconds. After 5 seconds, it will be weighed again, and the new first deviation value P1 (the weight of the first medium liquid remaining at this time) will be compared with 20 grams again until the weight of the first medium liquid remaining is less than or equal to 20 grams. Then the displacement component will drive the cleaning rack 6 to move above the next cleaning tank 1.

[0057] Alternatively, the second method uses absolute values ​​to determine the outcome. When P1 ≤ Y grams, the requirement to continue moving forward is met, and the displacement component drives the cleaning rack 6 to continue moving above the second cleaning tank 1. If P1 > Y grams, the requirement to continue moving forward is not met, and the cleaning rack 6 remains above the intermediate plate 7. After a period of time T1, the first weighing sensor 81 weighs the rack again to obtain a new first weight value A. If P1 ≤ Y grams, the requirement to continue moving forward is met. If not, the rack continues to wait for a period of time T1 until P1 ≤ Y grams and Y ≥ 10 is met.

[0058] Y=25, meaning that when the weight of the first medium liquid remaining on the cleaning rack 6 and the lens is greater than 25 grams, the cleaning rack 6 will not continue to move forward and will wait for a period of time T1, T1=5 seconds. After 5 seconds, it will be weighed again, and the new first deviation value P1 (the weight of the first medium liquid remaining at this time) will be compared with 25 grams. This process will continue until the weight of the first medium liquid remaining is less than or equal to 25 grams, at which point the displacement component will move the cleaning rack 6 to the top of the next cleaning tank 1.

[0059] Two judgment methods can reduce the amount of the first medium in the first cleaning tank 1 entering the second cleaning tank 1. This embodiment adopts the first judgment method based on ratio.

[0060] Step 6: After the requirement to continue moving forward is met, the displacement component drives the cleaning frame 6 into the solution in the second cleaning tank 1. The ultrasonic transducer 21 of the cleaning tank 1 works to clean the optical lenses on the cleaning frame 6. After cleaning, the displacement component drives the cleaning frame 6 to move upward, and the cleaning frame 6 is removed from the solution in the cleaning tank 1.

[0061] The solution in the second cleaning tank 1 is the second medium. The optical lens is ultrasonically cleaned in the second medium. After the cleaning rack 6 moves up, the second medium remaining on the cleaning rack 6 and the optical lens drips back into the first cleaning tank 1.

[0062] Step 7: The displacement component moves the cleaning rack 6 to the top of the intermediate plate 7 between the second cleaning tank 1 and the third cleaning tank 1. At this time, the first weighing sensor 81 weighs the contents to obtain the first weight value A.

[0063] Similar to step 4, the first weight value A is collected after the cleaning rack 6 moves to a predetermined position directly above the intermediate plate 7.

[0064] Step 8: Repeat step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirements for continuing to move forward. The displacement component drives the cleaning frame 6 into the next cleaning tank 1.

[0065] When the weight of the remaining second medium liquid is less than or equal to 20 grams, the displacement component will move the cleaning rack 6 above the next cleaning tank 1, reducing the amount of the second medium in the second cleaning tank 1 entering the third cleaning tank 1.

[0066] Step 9: The displacement component drives the cleaning frame 6 through multiple cleaning tanks 1 in sequence for ultrasonic cleaning. When the displacement component drives the cleaning frame 6 to move above the intermediate plate 7 between the (N-1)th cleaning tank 1 and the Nth cleaning tank 1, the first weighing sensor 81 weighs and obtains the first weight value A. The judgment of the first deviation value P1 in step 5 is repeated until the first deviation value P1 meets the requirement to continue moving forward. Then the displacement component drives the cleaning frame 6 into the Nth cleaning tank 1.

[0067] In this embodiment, since N=3, there are no other cleaning tanks 1 and intermediate plates 7. After the ultrasonic cleaning of the first two cleaning tanks 1, the cleaning rack 6 has reached the third cleaning tank 1, which is the last cleaning tank 1. The displacement component drives the cleaning rack 6 into the third medium solution of the third cleaning tank 1. The ultrasonic transducer 21 of the third cleaning tank 1 works to clean the light lens.

[0068] Step 10: After the cleaning rack 6 passes through N cleaning tanks 1, the displacement component drives the cleaning rack 6 to move upward, the cleaning rack 6 is removed from the solution in the cleaning tank 1, and the cleaning rack 6 is removed from the connecting rod 5 to obtain the optical lens after multiple cleaning processes.

[0069] After ultrasonic cleaning with different media in the three cleaning tanks 1, the cleaning rack 6 is removed, and the optical lens is taken off the cleaning rack 6 and enters the next processing step.

[0070] In step 4, step 7 or step 9, when the cleaning rack 6 is above the intermediate plate 7, the second weighing sensor 82 weighs the solution dripping onto the surface of the intermediate plate 7 to obtain the first load value B, and sets the alarm value J. When B≥J, an alarm is issued.

[0071] In this embodiment, as liquid continuously drips from the cleaning rack 6 and the optical lenses, and liquid continuously slides off the intermediate plate 7, the weight of the liquid on the intermediate plate 7 is constantly changing, and the first load-bearing value B is also constantly changing. The alarm value J is set according to the weight D of a single optical lens, J≥D. In this embodiment, J is set to D. Since D=100 grams, J=100 grams. Setting the alarm value J can measure sudden large weight changes on the intermediate plate 7. Generally, during the continuous dripping and sliding of liquid, the liquid on the intermediate plate 7 has a certain weight, but the weight is small and decreasing. If a large weight is suddenly detected, it indicates an abnormality. Generally, this is due to a lens falling or multiple lenses tilting and accumulating a large amount of solution spilling. In this case, an alarm is required, the weighing controller 8 issues an alarm, and manual intervention is needed.

[0072] In this embodiment, a second alarm mode can also be set. When the first weight value A is less than the initial weight value S, it indicates that the cleaning rack 6 is abnormal, usually due to the optical lens falling off. At this time, the weighing controller 8 will sound an alarm and manual intervention will be required.

[0073] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a multi-tank ultrasonic cleaning device for optical lenses, characterized in that, The device includes multiple cleaning tanks (1) arranged side by side, an ultrasonic transducer (21) disposed in the cleaning tank (1), an ultrasonic generator (22) electrically connected to the ultrasonic transducer (21), and a displacement assembly disposed above the cleaning tank (1). A connecting rod (5) is connected to the displacement assembly, and a cleaning rack (6) for placing lenses is connected to the connecting rod (5). The displacement assembly is used to drive the cleaning rack (6) to move up and down and left and right. A first weighing sensor (81) is provided on the connecting rod (5). An intermediate plate (7) is provided between two adjacent cleaning tanks (1) in the multiple cleaning tanks (1). The intermediate plate (7) is inclined to guide the liquid on its upper surface to slide down into one of the two adjacent cleaning tanks (1). A first support plate (72) is connected to the back of the intermediate plate (7). A second support plate (73) is provided between two adjacent cleaning tanks (1). The first support plate (72) is connected to the second support plate (73) through the second weighing sensor (82). The control method includes the following steps: Step 1: The cleaning rack (6) is located on the connecting rod (5), and the first weighing sensor (81) is zeroed; Step 2: Remove the cleaning rack (6) and place one or more optical lenses inside. Then connect the cleaning rack (6) to the connecting rod (5). At this time, the first weighing sensor (81) weighs the contents to obtain the initial weight value S. Step 3: The displacement component drives the cleaning rack (6) into the solution of the first cleaning tank (1) among the N cleaning tanks (1). The ultrasonic transducer (21) of the cleaning tank (1) works to clean the optical lens on the cleaning rack (6). After cleaning, the displacement component drives the cleaning rack (6) to move upward, and the cleaning rack (6) is removed from the solution in the cleaning tank (1). The residual solution on the cleaning rack (6) drips continuously. Step 4: The displacement component drives the cleaning rack (6) to move above the intermediate plate (7) between the first cleaning tank (1) and the second cleaning tank (1). At this time, the first weighing sensor (81) weighs and obtains the first weight value A. Step 5: First weight value A - initial weight value S = first deviation value P1, and judge the first deviation value P1; When P1≤X%S, the requirement to continue moving forward is met, and the displacement component drives the cleaning rack (6) to continue moving above the second cleaning tank (1). If P1>X%S, the requirement to continue moving forward is not met, and the cleaning rack (6) continues to stay above the middle plate (7). After a period of time T1, the first weighing sensor (81) weighs again to obtain a new first weight value A. The new first deviation value P1 is compared with X%S. When P1≤X%S, the requirement to continue moving forward is met. If not, the requirement to continue moving forward is met, and the solution continues to drip until P1≤X%S and 1≤X≤5 are met. Alternatively, when P1 ≤ Y grams, the requirement to continue moving forward is met, and the displacement component drives the cleaning rack (6) to continue moving above the second cleaning tank (1). If P1 > Y grams, the requirement to continue moving forward is not met, and the cleaning rack (6) continues to stay above the middle plate (7). After a period of time T1, the first weighing sensor (81) weighs again to obtain a new first weight value A. When P1 ≤ Y grams, the requirement to continue moving forward is met. If not, the requirement to continue moving forward is met, and the requirement to continue moving forward is met. If not, the requirement to continue waiting for a period of time T1 is met until P1 ≤ Y grams and Y ≥ 10 is met. Step 6: After the requirement to continue moving forward is met, the displacement component drives the cleaning frame (6) into the solution in the second cleaning tank (1). The ultrasonic transducer (21) of the cleaning tank (1) works to clean the optical lens on the cleaning frame (6). After cleaning, the displacement component drives the cleaning frame (6) to move upward, and the cleaning frame (6) leaves the solution in the cleaning tank (1). Step 7: The displacement component drives the cleaning rack (6) to move above the intermediate plate (7) between the second cleaning tank (1) and the third cleaning tank (1). At this time, the first weighing sensor (81) weighs and obtains the first weight value A. Step 8: Repeat step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirements for continuing to move forward. The displacement component drives the cleaning frame (6) into the next cleaning tank (1). Step 9: The displacement component drives the cleaning rack (6) through multiple cleaning tanks (1) for ultrasonic cleaning. When the displacement component drives the cleaning rack (6) to move above the intermediate plate (7) between the (N-1)th cleaning tank (1) and the Nth cleaning tank (1), the first weighing sensor (81) weighs and obtains the first weight value A. The judgment of the first deviation value P1 in step 5 is repeated until the first deviation value P1 meets the requirement to continue moving forward. The displacement component drives the cleaning rack (6) into the Nth cleaning tank (1). Step 10: After the cleaning rack (6) passes through N cleaning tanks (1), the displacement component drives the cleaning rack (6) to move upward, the cleaning rack (6) is removed from the solution in the cleaning tank (1), and the cleaning rack (6) is removed from the connecting rod (5) to obtain the optical lens after multiple cleanings.

2. The control method for the multi-tank ultrasonic cleaning device for optical lenses according to claim 1, characterized in that, The first weighing sensor (81) and the second weighing sensor (82) are both electrically connected to the weighing controller (8).

3. The control method for the multi-slot ultrasonic cleaning device for optical lenses according to claim 1, characterized in that, The cleaning rack (6) is detachably connected to the connecting rod (5).

4. The control method for the multi-tank ultrasonic cleaning device for optical lenses according to claim 1, characterized in that, The first weighing sensor (81) is an S-type weighing sensor, and the connecting rod (5) includes a first working rod (51) connected to one end of the first weighing sensor (81) and a second working rod (52) connected to the other end of the first weighing sensor (81).

5. The control method for the multi-tank ultrasonic cleaning device for optical lenses according to claim 1, characterized in that, The displacement assembly includes a first displacement slide (3) and a second displacement slide (4) connected to the first displacement slide (3). The first displacement slide (3) is used to drive the cleaning rack (6) to move up and down, and the second displacement slide (4) is used to drive the first displacement slide (3) to move left and right.

6. The control method for the multi-tank ultrasonic cleaning device for optical lenses according to claim 1, characterized in that, When the cleaning rack (6) is located above the intermediate plate (7), the second weighing sensor (82) weighs the solution that drips onto the surface of the intermediate plate (7) to obtain a first load value B, and sets an alarm value J. When B≥J, an alarm is issued.

7. The control method for the multi-tank ultrasonic cleaning device for optical lenses according to claim 1, characterized in that, When the first weight value A is less than the initial weight value S, an alarm is issued directly.

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