Lens transfer method

Abstract

The present invention discloses a method for transferring lenses, belonging to the technical field of lens production equipment, which includes the following steps: preset the lens coordinates on the loading tray and the unloading tray in the tray operation module of the processing unit, start the left-right translation mechanism, the lifting mechanism and the rotary adsorption mechanism with a suction nozzle to move between the loading station, the centering station and the unloading station, and the rotary adsorption mechanism adjusts the state of the suction nozzle for adsorbing the lens according to the lens placement requirements. Through the cooperation of the left-right translation mechanism, the lifting mechanism and the rotary adsorption mechanism, the operations of adsorbing the lens on the loading tray, centering the lens and placing the lens on the unloading tray are realized. The present invention uses mechanical lens transfer to replace manual transfer operation, and the hand does not contact the lens, ensuring the qualified rate of the lens appearance. On the premise of improving the product quality, the work efficiency is also improved, and the labor intensity of the staff is reduced, which is especially suitable for mass production.

Description

Technical Field

[0001] The present invention belongs to the technical field of lens production equipment, and particularly relates to a lens transfer method. Background Art

[0002] In the process of manufacturing optical glass lenses, different carriers are required for different processes, such as annealing process, cleaning process, coating process, etc. For the annealing process, the lenses need to be placed on a high-temperature-resistant annealing carrier (abbreviated as annealing plate); for the cleaning process, the lenses need to be placed on a corrosion-resistant cleaning carrier (cleaning basket), and it is required that the lenses be placed vertically, so that the number of lenses accommodated is large and batch cleaning is convenient; while for the coating process, the lenses need to be placed on a coating carrier (abbreviated as coating disc) that is high-temperature and corrosion-resistant and can fix the lenses. According to the production process requirements, the above different carriers have relatively high positioning requirements for the transferred lenses and cannot be placed offset.

[0003] According to the production requirements, after the annealing process is completed, it is usually necessary to transfer the lenses in the annealing carrier to the cleaning basket or coating disc, and select the next process according to the lens process card. However, the currently commonly used transfer method is to manually pick and place, and since each carrier loads a large number of lenses, manual picking and placing easily causes poor appearance of the lenses, and the product quality cannot be guaranteed. Summary of the Invention

[0004] The purpose of the present invention is to provide a lens transfer method, aiming to solve the technical problem in the prior art that manually picking and placing lenses in different carriers affects the appearance of the lenses and it is not easy to ensure the product quality.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A lens transfer method includes the following steps:

[0007] Pre-store the lens position coordinates on the loading tray and the unloading tray in the processing unit;

[0008] Place the loading tray at the loading station of the lens transfer device, and start the left and right translation mechanism, the lifting mechanism, and the rotating adsorption mechanism with a suction nozzle;

[0009] S100: Move the suction nozzle to the picking coordinate on the loading tray, pick up the lens with the suction nozzle and move it to the centering station;

[0010] S200: Drive the lens to the centering coordinate at the centering station and perform centering on the lens;

[0011] S300: Move the lens to the placing coordinate at the unloading station and place the lens on the unloading tray;

[0012] S400: Repeat the above steps S100 - S400 until all the lenses on the loading tray are transferred to the unloading tray.

[0013] Preferably, the lens transfer device includes a workbench and a support frame. On the workbench, a loading station, a centering station, and an unloading station are sequentially arranged from left to right. The loading station is provided with a loading slide, the centering station is provided with a centering mechanism, the unloading station is provided with an unloading slide, and the loading slide and the unloading slide are respectively connected to the workbench through front - rear translation mechanisms; the loading slide is used to place the loading tray for supporting the lenses, and the unloading slide is used to place the unloading tray for supporting the lenses; on the crossbeam of the support frame, a rotary adsorption mechanism for adsorbing the lenses is provided. The rotary adsorption mechanism is connected to the crossbeam through a lifting mechanism, and the lifting mechanism is connected to the crossbeam through a left - right translation mechanism; the centering mechanism is used to perform centering adjustment on the lenses adsorbed by the rotary adsorption mechanism.

[0014] Preferably, the loading slide and the unloading slide are respectively in sliding cooperation with two support platforms on the workbench. The front - rear translation mechanism includes a front - rear translation motor, a lead screw, and nuts. Lead screws are provided at the bottoms of the two support platforms, and the nuts in threaded cooperation with the lead screws are respectively arranged at the bottoms of the loading slide and the unloading slide. The lead screws are driven by the front - rear translation motor and are used to drive the loading slide and the unloading slide to move forward and backward along the two support platforms respectively.

[0015] Preferably, the loading slide is provided with a limiting structure for positioning the loading tray; the unloading slide is provided with a positioning structure for positioning the unloading tray.

[0016] Preferably, the centering mechanism includes a fixed claw and a pneumatic chuck arranged on a base. The base is arranged on the workbench. The fixed claw is fixedly connected to the base, and the pneumatic chuck connected to the air circuit is arranged opposite to the fixed claw. A slide rail for sliding cooperation with the pneumatic chuck is provided on the base.

[0017] Preferably, positioning plates are symmetrically arranged at the tops of the fixed claw and the pneumatic chuck. Positioning grooves for matching the outer shape of the lens are provided on the opposite side surfaces of the two positioning plates.

[0018] Preferably, the rotary adsorption mechanism includes a support plate, a swing cylinder, and a rotary suction pipe. The support plate is connected to the crossbeam through a lifting mechanism. The cylinder body of the swing cylinder is fixed at the lower end of the support plate. The rotary suction pipe connected to the air circuit is horizontally arranged. One end of the rotary suction pipe is fixedly connected to the rotating shaft of the swing cylinder, and a suction nozzle for adsorbing the lens is provided at the other end of the rotary suction pipe.

[0019] Preferably, the lifting mechanism includes a lifting motor, a lead screw, and a vertical frame. A nut that is in threaded engagement with the lead screw is provided on the back of the support plate. The lifting motor is disposed at the top of the vertical frame, and the output shaft of the lifting motor is fixedly coaxially connected to the lead screw. The vertical frame can be connected to the left and right translation mechanism for driving the vertical frame to slide left and right along the cross beam. A guide rail that is in sliding engagement with the support plate is provided on the outer side of the vertical frame.

[0020] Preferably, the left and right translation mechanism includes a left and right translation motor and a lead screw disposed on the top of the cross beam. A slider that is in threaded engagement with the lead screw is provided on the top of the vertical frame. The slider can slide along a track on the cross beam. The lead screw is disposed below the track, and the left and right translation motor is disposed at one end of the cross beam.

[0021] Preferably, the support frame is a portal frame, including a cross beam and two side columns. The columns are disposed on both sides of the workbench, and the cross beam is disposed above the workbench.

[0022] Preferably, a processing unit and a controller are provided inside the workbench. The controller is a PLC controller. A touch screen and a control switch that are connected to the PLC controller are provided on the front side of the workbench. The processing unit is embedded in the touch screen. The PLC controller can receive instructions from the touch screen to control the actions of the front and back translation mechanism, the rotary adsorption mechanism, the lifting mechanism, the left and right translation mechanism, and the centering mechanism.

[0023] The beneficial effects of adopting the above technical solutions are as follows: Compared with the prior art, in the present invention, the left and right translation mechanism drives the rotary adsorption mechanism to move between the loading station, the centering station, and the unloading station, and cooperates with the lifting mechanism to realize the actions of adsorbing the lens on the loading tray, centering the lens, and placing the lens on the unloading tray. The present invention uses mechanical transfer of the lens instead of manual transfer, and the hand does not contact the lens, ensuring the appearance qualification rate of the lens. On the premise of improving the product quality, the work efficiency is also improved, and the labor intensity of the staff is reduced, especially suitable for mass production. Description of the Drawings

[0024] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0025] Figure 1 is a schematic structural diagram of a lens transfer device applied in an embodiment of the present invention;

[0026] Figure 2 is Figure 1 a partial enlarged view of A in

[0027] Figure 3 is Figure 1 a partial enlarged view of B in

[0028] Figure 4 is a schematic diagram of the control flow of the present invention;

[0029] In the figure: 1 - workbench, 2 - support frame, 21 - crossbeam, 22 - column; 3 - loading slide, 4 - centering mechanism, 40 - base, 41 - fixed claw, 42 - pneumatic claw, 43 - slide rail, 44 - positioning plate, 45 - positioning groove, 46 - suction head; 5 - unloading slide, 6 - loading tray, 7 - unloading tray, 8 - rotary adsorption mechanism, 81 - support plate, 82 - swing cylinder, 83 - rotary suction pipe, 84 - suction nozzle; 9 - lifting mechanism, 90 - lifting motor, 91 - vertical frame, 92 - guide rail; 10 - left - right translation mechanism, 101 - left - right translation motor, 102 - track; 11 - support table, 12 - positioning border, 13 - limit groove; 14 - touch screen, 15 - control switch. Specific embodiments

[0030] The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0031] See Figure 1 , a lens transfer method provided by the present invention includes the following steps:

[0032] Pre - store the lens position coordinates on the loading tray and the unloading tray in the tray operation module of the processing unit according to the lens specification formula.

[0033] Place the loading tray 6 at the loading station of the lens transfer device, and start the left - right translation mechanism, the lifting mechanism, and the rotary adsorption mechanism with the suction nozzle 84; determine whether the suction nozzle needs to rotate according to the current mode. Considering that the lenses on the loading tray and the unloading tray can be placed horizontally or vertically. In this embodiment, the case where the lenses on the loading tray are placed vertically and the lenses on the unloading tray are placed horizontally is taken as an example for illustration.

[0034] S100: The left - right translation mechanism drives the suction nozzle 84 to move left along the X - axis, the lifting mechanism drives the suction nozzle to move down along the Z - axis to the picking coordinate on the loading tray 6. After the suction nozzle picks up the lens, it moves up along the Z - axis to the picking standby position. The rotary adsorption mechanism rotates the suction nozzle to turn the lens to the horizontal, and then moves down to the centering station;

[0035] S200: The suction nozzle drives the lens to descend to the centering coordinate, and centers the lens (ensuring that the adsorbed lens is at the exact center of the suction nozzle);

[0036] S300: Centering is completed. The left - right translation mechanism drives the moving lens to the discharging coordinate at the discharging station. The suction nozzle releases the lens and places it on the discharging tray 7.

[0037] S400: Repeat the above steps S100 - S400 until all the lenses on the loading tray are transferred to the discharging tray.

[0038] In specific applications, the front - back translation mechanism, the lifting mechanism, and the left - right translation mechanism are all controlled by a PLC controller. The processing unit realizes human - machine interaction through a touch screen. The PLC controller is used to receive the parameters / feedback information input by the touch screen and the tray operation module, and after calculation, outputs the corresponding control information to the stepper drivers of the front - back translation mechanism, the lifting mechanism, and the left - right translation mechanism. At the same time, the PLC controller controls the stepper drivers, the rotary adsorption mechanism, and the centering mechanism to perform the operation of transferring lenses through I / O communication, thereby controlling the overall operation process of the lens transfer device.

[0039] At the same time, a stepper driver is used to accurately control the moving amounts of the loading slide, the discharging slide, the vertical frame, and the suction nozzle, so as to realize the precise positioning of the system at positions such as taking and placing on the loading tray, taking and placing by the centering mechanism, and taking and placing on the discharging tray.

[0040] In specific operations, use the touch screen to set the operating parameters of the lens transfer system in the processing unit, and perform quick switching of different lens formulas for different carriers. Select the current mode (flat - to - flat, flat - to - vertical, vertical - to - flat, where flat means the lens is placed flat and vertical means the lens is placed vertically), input the X coordinate and Z coordinate of the centering mechanism, then input the coordinates of the three positioning pins at points A, B, and C on the loading tray and the discharging tray, the X - direction spacing and Y - direction spacing between the positioning pins and the three points A, B, and C on the tray, the number of rows and columns of the tray. The PLC will automatically calculate the row spacing, column spacing, slope, the X coordinate and Y coordinate of the tray (for example: if the mode or lens size is changed, the above operations need to be performed again to modify the corresponding parameters).

[0041] Among them, the tray operation module is used to judge whether the loading is completed by comparing the current number of picked - up materials with the number of materials on the loading tray, and judge whether the discharging tray is full by comparing the current number of placed materials with the number of positions on the discharging tray. After the loading is completed and the discharging tray is full, an alarm will be automatically given to prompt the operator to replace the tray. The tray replacement cycle = the number of trays * (loading and unloading time + centering time). The control flow of the present invention is as Figure 4 shown.

[0042] In a specific embodiment of the present invention, as Figure 1As shown in the figure, the lens transfer device includes a workbench 1 and a support frame 2. On the workbench 1, a loading station, a centering station, and an unloading station are arranged in sequence from left to right. The loading station is provided with a loading slide 3, the centering station is provided with a centering mechanism 4, the unloading station is provided with an unloading slide 5, and the loading slide 3 and the unloading slide 5 are respectively connected to the workbench 1 through front-back translation mechanisms; the loading slide 3 is used to place a loading tray 6 for supporting the lens, and the unloading slide 5 is used to place an unloading tray 7 for supporting the lens; on the cross beam 21 of the support frame 2, a rotary adsorption mechanism 8 for adsorbing the lens is provided. The rotary adsorption mechanism 8 is connected to the cross beam 21 through a lifting mechanism 9, and the lifting mechanism 9 is connected to the cross beam 21 through a left-right translation mechanism 10; the centering mechanism 4 is used to perform centering adjustment on the lens adsorbed by the rotary adsorption mechanism 8. In this embodiment, the loading tray is an annealing plate, and the unloading tray can be a cleaning basket or a coating tray. The rotary adsorption mechanism is driven by the left-right translation mechanism to move between the loading station, the centering station, and the unloading station. The suction nozzle of the rotary adsorption mechanism completes the actions of adsorbing the lens on the loading tray, centering the lens in the center of the suction nozzle, and placing the lens on the unloading tray through the lifting mechanism.

[0043] As a preferred structure, as Figure 1 shown in the figure, the loading slide 3 and the unloading slide 5 are respectively in sliding fit with two support platforms 11 on the workbench 1. The front-back translation mechanism includes a front-back translation motor, a lead screw, and a nut (not shown in the figure). Lead screws are provided at the bottoms of the two support platforms 11, and nuts in threaded fit with the lead screws are respectively arranged at the bottoms of the loading slide 3 and the unloading slide 5. The lead screw is driven by the front-back translation motor to drive the loading slide 3 and the unloading slide 5 to move forward and backward along the two support platforms 11 respectively. During specific manufacturing, the two side edges of the loading slide and the unloading slide are connected to the nut through two side connecting plates, and sliding grooves in sliding fit with the two side edges of the support platform are arranged below the two side edges of the loading slide and the unloading slide. Among them, the front-back translation motor adopts a stepping motor to achieve precise translation of the loading slide and the unloading slide.

[0044] As a preferred structure, the loading slide 3 is provided with a limiting structure for positioning the loading tray 6; the unloading slide is provided with a positioning structure for positioning the unloading tray. During specific manufacturing, the limiting structure includes positioning frames 12 or positioning pins arranged on two adjacent sides of the loading slide; the positioning structure includes limiting grooves 13 or positioning pins arranged on the upper surface of the unloading slide to realize the rapid positioning of the unloading tray on the unloading slide. With the help of the positioning frame, the loading tray can be quickly positioned on the loading slide. Of course, the positioning structure and the limiting structure are not limited to the above structures, and other structures such as positioning blocks or positioning platforms can also be used to achieve the positioning function.

[0045] In a specific embodiment of the present invention, as Figure 2As shown, the centering mechanism 4 includes a fixed jaw 41 and a pneumatic chuck 42 arranged on a base 40. The base 40 is arranged on a workbench 1. The fixed jaw 41 is fixedly connected to the base 40, and the pneumatic chuck 42 connected to the air circuit is arranged opposite to the fixed jaw 41. A slide rail 43 for sliding cooperation with the pneumatic chuck 42 is provided on the base 40. After the nozzle of the rotary adsorption mechanism firmly adsorbs the lens, as the lifting mechanism descends to the position between the fixed jaw 41 and the pneumatic chuck 42 above the workbench, the position of the lens is corrected by using the pneumatic chuck, so that the adsorbed lens is at the exact center of the nozzle, ensuring accurate placement at the corresponding position on the blanking tray.

[0046] To further optimize the above technical solution, as Figure 2 shown, positioning plates 44 are symmetrically arranged at the tops of the fixed jaw 41 and the pneumatic chuck 42. Positioning grooves 45 for matching the outer shape of the lens are provided on the opposite side surfaces of the two positioning plates 44. At the same time, a suction head 46 for supporting the lens is installed directly below the positioning groove. When the lens moves above the suction head, the nozzle releases the lens and then adsorbs it on the suction head. Under the action of the pneumatic chuck, the position of the lens is corrected by means of the positioning groove. Subsequently, the suction head releases the lens, and then the nozzle is activated to firmly adsorb the lens and move it above the blanking station, and then it descends and is placed in the lens slot of the blanking tray and the lens is released.

[0047] In a specific embodiment of the present invention, as Figure 3 shown, the rotary adsorption mechanism 8 includes a support plate 81, a swing cylinder 82 and a rotary suction pipe 83. The support plate 81 is connected to a cross beam 21 through a lifting mechanism 9. The cylinder body of the swing cylinder 82 is fixed at the lower end of the support plate 81. The rotary suction pipe 83 connected to the air circuit is horizontally arranged. One end of the rotary suction pipe 83 is fixedly connected to the rotating shaft of the swing cylinder 82, and a nozzle 84 for adsorbing the lens is provided at the other end of the rotary suction pipe 83. The swing cylinder is used to drive the rotary suction pipe to rotate, so that the nozzle faces downward or to one side, and thus the adsorbed lens is in a horizontal or vertical state, and the lens is placed on the blanking tray as required.

[0048] During the specific design, as Figure 1As shown, the lifting mechanism 9 includes a lifting motor 90, a lead screw, and a vertical frame 91. A nut that is threadedly engaged with the lead screw is provided on the back surface of the support plate 81. The lifting motor 90 is disposed at the top of the vertical frame 91, and the output shaft of the lifting motor 90 is fixedly coaxial with the lead screw. The vertical frame 91 can be connected to the left and right translation mechanism 10 and is used to drive the vertical frame 91 to slide left and right along the cross beam 21. A guide rail 92 that is slidably engaged with the support plate 81 is provided on the outer side surface of the vertical frame 91. Among them, the lifting motor is a stepper motor to achieve precise lifting of the suction nozzle. By starting the lifting motor to lift the support plate, the rotating suction pipe is driven to move up and down, realizing the picking and placing operations of the lens. Of course, the lifting mechanism is not limited to the above-mentioned lead screw drive, and can also be implemented by using a hydraulic cylinder, a pneumatic cylinder, or a gear and rack drive.

[0049] In a specific embodiment of the present invention, as Figure 1 shown, the left and right translation mechanism 10 includes a left and right translation motor 101 and a lead screw disposed on the top of the cross beam 1. A slider that is threadedly engaged with the lead screw is provided on the top of the vertical frame 91. The slider can slide along the track 102 on the cross beam 21. The lead screw is disposed below the track 102, and the left and right translation motor 101 is disposed at one end of the cross beam 21. By starting the left and right translation motor to rotate the lead screw, the vertical frame is driven to move left and right along the cross beam. Among them, the left and right translation motor can be a stepper motor to achieve precise translation of the vertical frame in the horizontal direction. Of course, the left and right translation mechanism is not limited to the above-mentioned lead screw drive, and can also be implemented by using a hydraulic cylinder, a pneumatic cylinder, or a belt drive.

[0050] During specific manufacturing, as Figure 1 shown, the support frame 2 is a gantry frame, including a cross beam 21 and two side columns 22 on both sides thereof. The side columns 22 are disposed on both sides of the workbench 1, and the cross beam 21 is disposed above the workbench 1. Using a support frame with a frame structure is more convenient for processing and manufacturing, and at the same time meets the requirements of lightweight design.

[0051] To further optimize the above technical solution, as Figure 1 shown, the processing unit and the controller are installed inside the workbench 1, and the controller is a PLC controller. A touch screen 14 and a control switch 15 that are connected to the PLC controller are provided on the front side of the workbench. The processing unit is embedded in the touch screen 14. The PLC controller is used to control the actions of the front and back translation mechanism, the rotary adsorption mechanism, the lifting mechanism, the left and right translation mechanism, and the centering mechanism. Using the PLC controller can realize automatic feeding, centering, and discharging of the lens, improving the automation degree of the equipment and the accuracy of lens transfer, and ensuring product quality.

[0052] The specific application process of the above embodiment is as follows:

[0053] Step 1: According to the current mode (vertical vs. horizontal), first determine whether the rotating suction pipe rotates, and then move the nozzle to the picking coordinate of the loading tray at the loading station to pick up the lens.

[0054] Step 2: After picking up the lens, move up along the z-axis to the picking standby position, and rotate the rotating suction pipe to turn the lens to the horizontal position.

[0055] Step 3: Move the nozzle to the centering coordinate, lower it and start the suction head and pneumatic chuck to center and align the lens.

[0056] Step 4: After centering is completed, the nozzle re-adsorbs the lens and moves to the placing coordinate at the unloading station to place the lens.

[0057] Step 5: After placing the lens, the nozzle moves up along the z-axis and moves to the placing standby position of the loading tray at the loading station.

[0058] Step 6: Repeat Steps 1-5 for subsequent operations.

[0059] In summary, the present invention has the advantages of simple and compact structure, high degree of automation, and high working efficiency. It eliminates the phenomenon of hand contact with the lens, reduces the appearance defects of the lens caused by human factors, ensures the appearance quality of the lens, and at the same time greatly reduces the labor intensity of the staff, and is especially suitable for mass production.

[0060] Many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed above.

Claims

1. A lens transfer method, characterized in that, Including the following steps: Pre-store the lens position coordinates on the loading tray and the unloading tray within the processing unit; Place the loading tray at the loading station of the lens transfer device, and start the left-right translation mechanism, the lifting mechanism, and the rotary adsorption mechanism with a suction nozzle; S100: Move the suction nozzle to the picking coordinate on the loading tray, pick up the lens with the suction nozzle and then move it to the centering station; S200: Drive the lens to the centering coordinate at the centering station to perform centering and alignment on the lens; S300: Move the lens to the placing coordinate at the unloading station and place the lens on the unloading tray; S400: Repeat the above steps S100 - S300 until all the lenses on the loading tray are transferred to the unloading tray; The lens transfer device includes a workbench and a support frame. On the workbench, there are successively arranged a loading station, a centering station, and an unloading station from left to right. The loading station is provided with a loading slide table, the centering station is provided with a centering mechanism, the unloading station is provided with an unloading slide table, and the loading slide table and the unloading slide table are respectively connected to the workbench through a front-back translation mechanism; the loading slide table is used to place the loading tray for supporting the lens, and the unloading slide table is used to place the unloading tray for supporting the lens; on the cross beam of the support frame, there is a rotary adsorption mechanism for adsorbing the lens. The rotary adsorption mechanism is connected to the cross beam through a lifting mechanism, and the lifting mechanism is connected to the cross beam through a left-right translation mechanism; the centering mechanism is used to perform centering adjustment on the lens adsorbed by the rotary adsorption mechanism; The loading slide table and the unloading slide table are respectively in sliding fit with two support platforms on the workbench. The front-back translation mechanism includes a front-back translation motor, a lead screw, and nuts. The bottoms of the two support platforms are both provided with lead screws, and the nuts in threaded fit with the lead screws are respectively arranged at the bottoms of the loading slide table and the unloading slide table. The lead screws are driven by the front-back translation motor and are used to drive the loading slide table and the unloading slide table to move forward and backward along the two support platforms respectively; The rotary adsorption mechanism includes a support plate, a swing cylinder, and a rotary suction pipe. The support plate is connected to the cross beam through a lifting mechanism. The cylinder body of the swing cylinder is fixed at the lower end of the support plate. The rotary suction pipe connected to the air circuit is horizontally arranged. One end of the rotary suction pipe is fixedly connected to the rotating shaft of the swing cylinder, and the other end of the rotary suction pipe is provided with a suction nozzle for adsorbing the lens.

2. The lens transfer method according to claim 1, wherein: The loading slide table is provided with a limit structure for positioning the loading tray; the unloading slide table is provided with a positioning structure for positioning the unloading tray.

3. The lens transfer method according to claim 1, wherein: The centering mechanism includes a fixed claw and a pneumatic claw arranged on a base. The base is arranged on the workbench. The fixed claw is fixedly connected to the base, and the pneumatic claw connected to the air circuit is arranged opposite to the fixed claw. There is a slide rail on the base that is in sliding fit with the pneumatic claw.

4. The lens transfer method according to claim 3, wherein: Positioning plates are symmetrically arranged at the tops of the fixed claw and the pneumatic claw. Positioning grooves for matching the outer shape of the lens are arranged on the opposite side surfaces of the two positioning plates.

5. The lens transfer method according to claim 1, characterized in that: The lifting mechanism includes a lifting motor, a lead screw and a vertical frame. A nut threadedly engaged with the lead screw is provided on the back surface of the support plate. The lifting motor is disposed at the top of the vertical frame, and the output shaft of the lifting motor is fixedly coaxially connected with the lead screw. The vertical frame can be connected to the left and right translation mechanism for driving the vertical frame to slide left and right along the cross beam. A guide rail slidably engaged with the support plate is provided on the outer side surface of the vertical frame.

6. The lens transfer method according to claim 5, wherein: The left and right translation mechanism includes a left and right translation motor and a lead screw disposed on the top of the cross beam. A slider threadedly engaged with the lead screw is provided on the top of the vertical frame. The slider can be slidably engaged with the track on the cross beam. The lead screw is disposed below the track, and the left and right translation motor is disposed at one end of the cross beam.

7. The lens transfer method according to any one of claims 1-6, characterized in that: A processing unit and a controller are provided inside the workbench. The controller is a PLC controller. A touch screen and a control switch connected to the PLC controller are provided on the front side of the workbench. The processing unit is embedded in the touch screen. The PLC controller is used to control the actions of the front and back translation mechanism, the rotary adsorption mechanism, the lifting mechanism, the left and right translation mechanism and the centering mechanism.

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