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

Abstract

The invention discloses an optical lens multi-groove ultrasonic cleaning device and a control method thereof, and belongs to the technical field of ultrasonic cleaning, the device comprises a plurality of cleaning grooves, an ultrasonic vibration plate, an ultrasonic generator and a displacement assembly, the displacement assembly is connected with a connecting rod, and the connecting rod is connected with a cleaning frame; the displacement assembly is used for driving the cleaning frame to move up and down and left and right, and a first weighing sensor is arranged on the connecting rod. The weight of the optical lens placed on the cleaning frame is measured, and when the lens falls off, an alarm can be given out to remind workers; the first weighing sensor is used for weighing to control whether the cleaning frame continues to move or not according to a deviation value, waiting time is shortened, the cleaning speed is increased, meanwhile, solution entering the next cleaning tank from the previous cleaning tank is reduced, solution mixing is reduced, and the cleaning effect is guaranteed. An inclined middle plate is arranged between every two adjacent cleaning tanks, dripping solutions are guided to slide into the original cleaning tanks, and solution mixing is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic cleaning, and in particular relates to a multi-slot ultrasonic cleaning device for optical lenses and a control method thereof. Background Art

[0002] Ultrasonic cleaning is a common method for cleaning optical lenses, and is widely used for cleaning lenses after grinding, polishing, coating and other processes. Since multi-slot ultrasonic cleaning equipment can be equipped with multiple cleaning tanks and different cleaning solutions such as glass water and pure water of different grades can be set in the cleaning tanks, the cleaning rack drives the optical lenses into different cleaning tanks for rough cleaning, semi-fine cleaning and fine cleaning, which can greatly improve the cleaning efficiency and cleaning effect, so it is widely used. However, in the existing multi-slot ultrasonic equipment, if the lens is clamped too loosely on the cleaning rack and falls during the cleaning process, the personnel cannot observe it in time, causing losses; and some settings are used. Since the cleaning rack and the optical lens will have residual solution from the previous cleaning tank when in use, too much residual solution will be brought into the next cleaning tank, which will affect the cleaning effect in the next cleaning tank. The existing solution is generally to wait for a fixed time after the cleaning rack is lifted, and then move to the next cleaning tank. However, this fixed waiting time will have errors due to different cleaning rack structures and different optical lens structures. Sometimes the waiting time is too short and there is more residual solution, and sometimes the waiting time is too long, which affects the cleaning efficiency. Summary of the invention

[0003] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a multi-tank ultrasonic cleaning device for optical lenses and a control method thereof, which is convenient for monitoring whether lenses fall during the cleaning process and can reduce the mixing of solutions in different cleaning tanks.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A multi-slot ultrasonic cleaning device for optical lenses comprises a plurality of cleaning slots arranged side by side, ultrasonic vibration plates arranged in the cleaning slots, an ultrasonic generator electrically connected to the ultrasonic vibration plates, and a displacement assembly arranged above the cleaning slots, wherein the displacement assembly is connected to a connecting rod, 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, and the connecting rod is provided with a first weighing sensor.

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

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

[0008] Preferably, the first weighing sensor and the second weighing sensor are both electrically connected to a 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 an optical lens multi-slot ultrasonic cleaning device, which is applied to the above-mentioned optical lens multi-slot ultrasonic cleaning device, and comprises 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 put one or more optical lenses in it, then connect the cleaning rack to the connecting rod, and then the first weighing sensor weighs to obtain an initial weight value S;

[0015] Step 3, the displacement component drives the cleaning rack into the solution of the first cleaning tank among the N cleaning tanks, and the ultrasonic vibration plate of the cleaning tank works to clean the optical lenses on the cleaning rack. After the cleaning is completed, the displacement component drives the cleaning rack to move upward, and the cleaning rack is separated from the solution in the cleaning tank, and the residual solution on the cleaning rack keeps dripping;

[0016] Step 4, the displacement assembly drives the cleaning rack to move above the middle plate between the first cleaning tank and the second cleaning tank, and the first weighing sensor performs weighing to obtain a first weight value A;

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

[0018] When P1≤X%S, the requirement to continue moving forward is met, and the displacement assembly 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 the stage time T1, the first weighing sensor weighs again to obtain a new first weight value A, and compares the new first deviation value P1 with X%S. When P1≤X%S, the requirement to continue moving forward is met. If not, the stage time T1 is continued to be waited, and the solution continues to drip until P1≤X%S, 1≤X≤5 is met;

[0019] Alternatively, when P1≤Y grams, the requirement to continue moving forward is met, and the displacement assembly 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 the stage time T1, the first weighing sensor 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 stage time T1 is continued to be waited until P1≤Y grams and Y≥10 are met.

[0020] Step 6: After the requirements for moving forward are met, the displacement component drives the cleaning rack into the solution in the second cleaning tank, and the ultrasonic vibration plate of the cleaning tank works to clean the optical lenses on the cleaning rack. After the cleaning is completed, the displacement component drives the cleaning rack to move upward, and the cleaning rack is separated from the solution in the cleaning tank;

[0021] Step 7, the displacement assembly drives the cleaning rack to move above the middle plate between the second cleaning tank and the third cleaning tank, and the first weighing sensor performs weighing to obtain a 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 requirement for continuing to move forward, and the displacement component drives the cleaning rack to enter the next cleaning tank;

[0023] Step 9, the displacement component drives the cleaning rack to pass through the ultrasonic cleaning of multiple cleaning tanks in sequence. When the displacement component drives the cleaning rack to move above the middle plate between the N-1th cleaning tank and the Nth cleaning tank, the first weighing sensor performs weighing to obtain a first weight value A, and repeats step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirement for continuing to move forward, and the displacement component drives the cleaning rack to enter the Nth cleaning tank;

[0024] Step 10: After the cleaning rack passes through N cleaning tanks, the displacement assembly drives the cleaning rack to move upward, the cleaning rack is separated from the solution in the cleaning tank, and the cleaning rack is removed from the connecting rod to obtain the optical lens after multiple cleanings.

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

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

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

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

[0029] 2. When the cleaning rack moves to the next cleaning tank, the first weighing sensor is used to weigh the deviation value to control whether the cleaning rack continues to move. It is suitable for different cleaning racks and optical lenses. While reducing the waiting time and increasing the cleaning speed, it also reduces the amount of solution from the previous cleaning tank entering the next cleaning tank, reduces solution mixing, and ensures the cleaning effect;

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

[0031] 4. An inclined middle plate is set between two adjacent cleaning tanks to guide the dripping solution to slide into the original cleaning tank to reduce solution mixing;

[0032] 5. A second weighing sensor is set under the middle plate, which can alarm in case of abnormal conditions such as lens falling. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0035] Figure 3 It is a schematic diagram of the hook structure of the embodiment;

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

[0037] Figure 5 It is a structural schematic diagram of another working state of the embodiment device. DETAILED DESCRIPTION

[0038] The present invention is further illustrated below in conjunction with specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0039] like Figure 1 and Figure 5 As shown, a multi-slot ultrasonic cleaning device for optical lenses comprises a cleaning tank 1, an ultrasonic vibration plate 21, an ultrasonic generator 22 and a displacement assembly. The cleaning tanks 1 are provided with N and arranged side by side, N≥3, and N=3 in the present embodiment. The cleaning tank 1 is in the shape of a box with an upper opening, and the interior of the cleaning tank 1 is used to contain a solution. Different solutions in different cleaning tanks 1 may adopt different solutions, such as glass water, surfactant cleaning solution or distilled water, etc. The ultrasonic vibration plate 21 adopts a wall-mounted vibration plate, and a plurality of ultrasonic vibration plates 21 are respectively arranged on the inner wall of the cleaning tank 1 through a hanging bracket. The hanging positions of the ultrasonic vibration plates 21 in different cleaning tanks 1 may be set differently. A plurality of ultrasonic vibrators are arranged inside the ultrasonic vibration plate 21 to convert the input electrical energy into mechanical energy, i.e., ultrasonic waves, and use ultrasonic waves to clean the objects in the cleaning tank 1. The ultrasonic generator 22 is arranged outside the cleaning tank 1, and the ultrasonic generator 22 is electrically connected to the plurality of ultrasonic vibration plates 21 through electric wires, so as to provide electrical energy to the ultrasonic vibration plate 21 to drive the ultrasonic vibrators to work.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, the displacement assembly is arranged above the cleaning tank 1, and the displacement assembly includes a first displacement slide 3 and a second displacement slide 4. The second displacement slide 4 is horizontally arranged above the cleaning tank 1, and the second displacement slide 4 includes a second slide seat 41, a second lead screw 42, a second driver 43 and a second slide 44. The second slide seat 41 is horizontally arranged and both ends are connected to the outer wall of the cleaning tank 1 through two supporting legs. The second lead screw 42 is arranged on the second slide seat 41 and is rotatably connected to the second slide seat 41. The second driver 43 is arranged at one end of the second slide seat 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 by itself, and the second slide 44 is movably connected to the second lead screw 42. When the second lead screw 42 rotates by itself, it drives the second slide 44 to slide left and right. Driven by the second driver 43, the second slide 44 slides left and right on the second slide seat 41. The first displacement slide 3 includes a first slide seat 31, a first lead screw 32, a first driver 33 and a first slide 34. The first slide seat 31 is vertically arranged. The first slide seat 31 is connected to the second slide 44 so that when the second slide 44 moves left and right, it drives the first slide seat 31 to move left and right. The first lead screw 32 is arranged on the first slide seat 31 and is rotatably connected to the first slide seat 31. The first driver 33 is arranged at one end of the first slide seat 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 by itself. The first slide 34 is movably connected to the first lead screw 32. When the first lead screw 32 rotates by itself, 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, 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, the cleaning rack 6 is used to place the optical lenses to be cleaned, the cleaning rack 6 adopts the existing Teflon cleaning rack, and clamps multiple optical lenses in groups of two by multiple clamps, and supports the optical lenses at the bottom. Multiple rows of optical lenses waiting to be cleaned can be placed on the cleaning rack 6. A hook 53 is provided at the lower end of the connecting rod 5, and a hanging plate 65 is provided on one side of the cleaning rack 6. The hanging plate 65 is provided with a hanging hole corresponding to the hook 53. When in use, the cleaning rack 6 is connected to the connecting rod 5 by hooking the hook 53 in the hanging hole. The detachable connection between the cleaning rack 6 and the connecting rod 5 can conveniently place or remove the cleaning rack 6. 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, and 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 34, and 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, and 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, so that the first weighing sensor 81 can measure the weight of the optical lens placed on the cleaning rack 6 when working. When the weight is lower than the initial weight, an alarm can be issued to remind the staff that the 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 among the N cleaning tanks 1. The intermediate plate 7 is tilted to guide the liquid on its upper surface to slide to one of the two adjacent cleaning tanks 1. The intermediate plate 7 is 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 tilted to the right to guide the dripping liquid to slide to the cleaning tank 1 on the right. A second support plate 73 is provided between two adjacent cleaning tanks 1. Two second weighing sensors 82 (the number can also be set to three or four, which are reasonably set according to needs) are provided on the second support plate 73. The second weighing sensor 82 adopts an existing cantilever beam sensor. The back of the intermediate plate 7 is connected to the first support plate 72. The upper end surface of the first support plate 72 is connected to the back of the intermediate plate 7. The lower end surface of the first support plate 72 is horizontally arranged and connected to the second weighing sensor 82. The first support plate 72 is connected to the second support plate 73 through the second weighing sensor 82, so that the two second weighing sensors 82 can measure the weight of the liquid dripping above the intermediate plate 7 in real time. The back of the middle plate 7 is also connected to a side baffle 71, and 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, thereby protecting the second weighing sensor 82. The first weighing sensor 81 and the second weighing sensor 82 are both electrically connected to the weighing controller 8, which is placed on the work surface. The weighing controller 8 uses an existing weighing control instrument, such as the TYC802 industrial-grade weighing controller integrated machine of the ground level intelligence technology, which integrates weighing, display, communication and control in one, has a small space and is easy to install. A 7-inch or 10-inch display touch screen is optional, a working power supply of 12-24V, supports 2 independent weighing channels, and a maximum of 6 sensors. The sensor wiring method is four-wire or six-wire, and the A / D output rate is settable at 6.25-100Hz. RS485 and ModBus-RTU protocols are standard, and it has functions such as peeling, empty scale, zeroing, zero tracking, overload alarm prompts, etc. The working environment is 0-60℃. The weighing controller 8 is connected to the first weighing sensor 81 and the second weighing sensor 82 through a cable. The cable of the first weighing sensor 81 passes around the rear of the second slide seat 41. A cable drag chain parallel to the second slide seat 41 can also be set above the second slide seat 41 to facilitate the cable to follow the movement of the sensor.

[0044] This embodiment also provides a control method for a multi-slot ultrasonic cleaning device, which is applied to the multi-slot ultrasonic cleaning device for optical lenses, and includes the following steps:

[0045] Step 1, the cleaning rack 6 is placed 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, and the displacement assembly drives the cleaning rack 6 to move to the top of the rightmost cleaning tank 1 among N cleaning tanks 1. In this embodiment, N=3.

[0047] Step 2, remove the cleaning rack 6 and put a plurality of optical lenses in it, then connect the cleaning rack 6 to the connecting rod 5, and at this time, the first weighing sensor 81 performs weighing to obtain an initial weight value S;

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

[0049] Step 3, the displacement component drives the cleaning rack 6 into the solution of the first cleaning tank 1 among the three cleaning tanks 1, and the ultrasonic vibration plate 21 of the cleaning tank 1 works to clean the optical lens on the cleaning rack 6. After the cleaning is completed, the displacement component drives the cleaning rack 6 to move up, and the cleaning rack 6 is separated from the solution in the cleaning tank 1, and the residual solution on the cleaning rack 6 keeps dripping;

[0050] The solution in the first cleaning tank 1 is the first medium, and 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 continuously drips back into the first cleaning tank 1.

[0051] Step 4: The displacement assembly drives the cleaning rack 6 to move to above the middle plate 7 between the first cleaning tank 1 and the second cleaning tank 1, and the first weighing sensor 81 performs weighing to obtain a first weight value A;

[0052] As liquid keeps dripping from the cleaning rack 6 and the optical lens, the weight keeps changing. The first weight value A is collected after the cleaning rack 6 moves to a predetermined position just above the middle plate 7.

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

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

[0055] The first method is to judge by the ratio. When P1≤X%S, the requirement of continuing to move forward is met, and the displacement assembly drives the cleaning rack 6 to continue to move above the second cleaning tank 1. If P1>X%S, the requirement of continuing to move forward is not met, and the cleaning rack 6 continues to stay above the middle plate 7. After the stage time T1, the first weighing sensor 81 weighs again to obtain a new first weight value A, and compares the new first deviation value P1 with X%S. When P1≤X%S, the requirement of continuing to move forward is met. If not, the stage time T1 is continued to be waited, and the solution continues to drip until P1≤X%S, 1≤X≤5, T1≥5 seconds are met;

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

[0057] Alternatively, the second method is to judge by absolute value. When P1≤Y grams, the requirement of continuing to move forward is met, and the displacement assembly drives the cleaning rack 6 to continue to move above the second cleaning tank 1. If P1>Y grams, the requirement of continuing to move forward is not met, and the cleaning rack 6 continues to stay above the middle plate 7. After the stage time T1, the first weighing sensor 81 weighs again to obtain a new first weight value A. When P1≤Y grams, the requirement of continuing to move forward is met. If not, the stage time T1 is continued to be waited until P1≤Y grams and Y≥10 are met.

[0058] Y=25, that is, 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 move forward, and the waiting stage time is T1, T1=5 seconds. After 5 seconds, it is weighed again, and the new first deviation value P1 (the weight of the first medium liquid remaining at this time) is compared with 25 grams again. When the weight of the first medium liquid remaining is less than or equal to 25 grams, the displacement component will drive the cleaning rack 6 to move to the top of the next cleaning tank 1;

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

[0060] Step 6: After the requirements for continuing to move forward are met, the displacement component drives the cleaning rack 6 to enter the solution in the second cleaning tank 1, and the ultrasonic vibration plate 21 of the cleaning tank 1 works to clean the optical lens on the cleaning rack 6. After the cleaning is completed, the displacement component drives the cleaning rack 6 to move upward, and the cleaning rack 6 is separated from the solution in the cleaning tank 1;

[0061] The solution in the second cleaning tank 1 is the second medium, and 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 continuously drips back into the first cleaning tank 1.

[0062] Step 7, the displacement assembly drives the cleaning rack 6 to move to above the middle plate 7 between the second cleaning tank 1 and the third cleaning tank 1, and at this time the first weighing sensor 81 performs weighing to obtain a 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 just above the middle plate 7.

[0064] Step 8, repeat step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirement for continuing to move forward, and the displacement component drives the cleaning rack 6 to enter the next cleaning tank 1;

[0065] When the weight of the residual second medium liquid is less than or equal to 20 grams, the displacement component will drive the cleaning rack 6 to move to the top of the next cleaning tank 1 to reduce the second medium in the second cleaning tank 1 from entering the third cleaning tank 1 .

[0066] Step 9, the displacement component drives the cleaning rack 6 to pass through the ultrasonic cleaning of multiple cleaning tanks 1 in sequence. When the displacement component drives the cleaning rack 6 to move above the middle plate 7 between the N-1th cleaning tank 1 and the Nth cleaning tank 1, the first weighing sensor 81 weighs to obtain a first weight value A, and repeats step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirement for continuing to move forward, and the displacement component drives the cleaning rack 6 to enter the Nth cleaning tank 1;

[0067] In this embodiment, since N=3, there are no other cleaning tanks 1 and intermediate plates 7. The cleaning rack 6 has passed through the ultrasonic cleaning of the first two cleaning tanks 1 and 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, and the ultrasonic vibration plate 21 of the third cleaning tank 1 works to clean the optical lens.

[0068] Step 10, after the cleaning rack 6 passes through N cleaning tanks 1, the displacement assembly drives the cleaning rack 6 to move upward, the cleaning rack 6 is separated 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;

[0069] After being ultrasonically cleaned with different media in the three cleaning tanks 1, the cleaning rack 6 is removed, and the optical lens is removed from the cleaning rack 6, and the optical lens enters the next processing flow.

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

[0071] In this embodiment, since the liquid on the cleaning rack 6 and the optical lens is constantly dripping, and the liquid on the middle plate 7 is constantly sliding down, the weight of the liquid on the middle plate 7 is constantly changing, and the first load 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=D is set. Since D=100 grams, J==100 grams. Setting the alarm value J can measure the sudden large weight change on the middle plate 7. Generally, during the continuous dripping and sliding of the liquid, the liquid on the middle plate 7 has a certain weight but the weight is small and is getting smaller. If a large weight is suddenly detected, it means that an abnormality has occurred. Generally, the lens has fallen or multiple lenses are tilted to accommodate more solution spilled. At this time, an alarm is required, and the weighing controller 8 issues an alarm, and manual intervention is performed.

[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, generally an optical lens falls off. At this time, the weighing controller 8 issues an alarm and manual intervention is performed.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An optical lens multi-slot ultrasonic cleaning device, characterized in that: The invention comprises a plurality of cleaning tanks (1) arranged side by side, an ultrasonic vibration plate (21) arranged in the cleaning tanks (1), an ultrasonic generator (22) electrically connected to the ultrasonic vibration plate (21), and a displacement assembly arranged above the cleaning tank (1), wherein the displacement assembly is connected to a connecting rod (5), the connecting rod (5) is connected to a cleaning rack (6) for placing lenses, the displacement assembly is used to drive the cleaning rack (6) to move up and down and left and right, and the connecting rod (5) is provided with a first weighing sensor (81).

2. The multi-slot ultrasonic cleaning device for optical lenses according to claim 1, characterized in that: An intermediate plate (7) is provided between two adjacent cleaning tanks (1) among the plurality of cleaning tanks (1); the intermediate plate (7) is arranged at an angle to guide liquid on its upper surface to slide down into one of the two adjacent cleaning tanks (1).

3. The multi-slot ultrasonic cleaning device for optical lenses according to claim 2, characterized in that: The back of the middle plate (7) is connected to a first support plate (72), a second support plate (73) is provided between two adjacent cleaning tanks (1), and the first support plate (72) is connected to the second support plate (73) via a second weighing sensor (82).

4. The multi-slot ultrasonic cleaning device for optical lenses according to claim 3, characterized in that: The first weighing sensor (81) and the second weighing sensor (82) are both electrically connected to the weighing controller (8).

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

6. The optical lens multi-slot ultrasonic cleaning device according to claim 1, characterized in that: The first weighing sensor (81) is an S-type weighing sensor, and the connecting rod (5) comprises 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).

7. The optical lens multi-slot ultrasonic cleaning device according to claim 1, characterized in that: The displacement assembly comprises a first displacement slide (3) and a second displacement slide (4) connected to the first displacement slide (3), wherein 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.

8. A control method for a multi-slot ultrasonic cleaning device for optical lenses, applied to the multi-slot ultrasonic cleaning device for optical lenses as claimed in any one of claims 3 to 5, characterized in that: The following steps are involved: Step 1, the cleaning rack (6) is located on the connecting rod (5), and the first weighing sensor (81) is calibrated to zero; Step 2, remove the cleaning rack (6) and put one or more optical lenses in it, then connect the cleaning rack (6) to the connecting rod (5), and then the first weighing sensor (81) weighs to obtain an initial weight value S; Step 3, the displacement component drives the cleaning rack (6) to enter the solution of the first cleaning tank (1) among the N cleaning tanks (1), and the ultrasonic vibration plate (21) of the cleaning tank (1) works to clean the optical lens on the cleaning rack (6). After the cleaning is completed, the displacement component drives the cleaning rack (6) to move upward, and the cleaning rack (6) is separated from the solution in the cleaning tank (1), and the solution remaining on the cleaning rack (6) keeps dripping; Step 4, the displacement assembly drives the cleaning rack (6) to move to above the middle plate (7) between the first cleaning tank (1) and the second cleaning tank (1), and at this time the first weighing sensor (81) performs weighing to obtain a first weight value A; Step 5: first weight value A - initial weight value S = first deviation value P1, judging the first deviation value P1; When P1≤X%S, the requirement for continuing to move forward is met, and the displacement assembly drives the cleaning rack (6) to continue to move above the second cleaning tank (1). If P1>X%S, the requirement for continuing to move forward is not met, and the cleaning rack (6) continues to stay above the middle plate (7). After the stage time T1, the first weighing sensor (81) weighs again to obtain a new first weight value A, and compares the new first deviation value P1 with X%S. When P1≤X%S, the requirement for continuing to move forward is met. If not, the stage time T1 is continued to be waited, and the solution continues to drip until P1≤X%S, 1≤X≤5 is met. Alternatively, when P1≤Y grams, the requirement for continuing to move forward is met, and the displacement assembly drives the cleaning rack (6) to continue to move toward the top of the second cleaning tank (1). If P1>Y grams, the requirement for continuing to move forward is not met, and the cleaning rack (6) continues to stay above the middle plate (7). After a stage time T1, the first weighing sensor (81) weighs again to obtain a new first weight value A. When P1≤Y grams, the requirement for continuing to move forward is met. If not, the stage time T1 is continued to be waited until P1≤Y grams and Y≥10 are met. Step 6: After the requirements for continuing to move forward are met, the displacement component drives the cleaning rack (6) to enter the solution in the second cleaning tank (1), and the ultrasonic vibration plate (21) of the cleaning tank (1) works to clean the optical lenses on the cleaning rack (6). After the cleaning is completed, the displacement component drives the cleaning rack (6) to move upward, and the cleaning rack (6) is separated from the solution in the cleaning tank (1); Step 7, the displacement assembly drives the cleaning rack (6) to move to above the middle plate (7) between the second cleaning tank (1) and the third cleaning tank (1), and at this time the first weighing sensor (81) performs weighing to obtain a first weight value A; Step 8, repeating step 5 to determine the first deviation value P1 until the first deviation value P1 meets the requirement for continuing to move forward, and the displacement assembly drives the cleaning rack (6) to enter the next cleaning tank (1); Step 9, the displacement component drives the cleaning rack (6) to pass through the ultrasonic cleaning of the plurality of cleaning tanks (1) in sequence. When the displacement component drives the cleaning rack (6) to move to the upper part of the intermediate plate (7) between the N-1th cleaning tank (1) and the Nth cleaning tank (1), the first weighing sensor (81) performs weighing to obtain a first weight value A, and repeats step 5 to judge the first deviation value P1 until the first deviation value P1 meets the requirement for continuing to move forward, and the displacement component drives the cleaning rack (6) to enter the Nth cleaning tank (1); Step 10: After the cleaning rack (6) passes through N cleaning tanks (1), the displacement assembly drives the cleaning rack (6) to move upward, the cleaning rack (6) is separated from the solution in the cleaning tank (1), and the cleaning rack (6) is removed from the connecting rod (5), thereby obtaining an optical lens after multiple cleanings.

9. The control method of the multi-slot ultrasonic cleaning device for optical lenses according to claim 8, characterized in that: When the cleaning rack (6) is located above the middle plate (7), the second weighing sensor (82) weighs the solution dripping onto the surface of the middle plate (7) to obtain a first load value B, set an alarm value J, and issue an alarm when B≥J.

10. The control method of the multi-slot ultrasonic cleaning device for optical lenses according to claim 8, characterized in that: When the first weight value A is less than the initial weight value S, an alarm is directly issued.

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