A fully automatic polishing system for lens polishing

Abstract

The utility model discloses a kind of full-automatic polishing system for lens polishing, and it is applicable to the precision polishing process of lens, prism and free curved surface optical element.The equipment includes stirring barrel, automatic powder feeder, stirrer, peristaltic pump and radial gradient nozzle, polishing powder is added into stirring barrel by automatic powder feeder regularly and quantitatively, and it is fully mixed with polishing liquid to form uniform mixed solution, and peristaltic pump quantitatively transports to nozzle and sprays to lens polishing surface.System controls powder amount, conveying rate and spraying pressure through PLC closed loop, realizes complex curved surface polishing liquid uniform distribution and surface shape precision stability.Through closed powder adding port design and dust recovery measure, effectively reduce operating dust concentration, improve operating environment.At the same time, equipment improves powder utilization, shortens powder changing time, improves production efficiency and reduces manual intervention.The utility model realizes the automation, uniformization and controllability of polishing process, significantly improves optical element precision polishing quality and process consistency.

Description

Technical Field

[0001] This utility model relates to the field of lens polishing technology, and in particular to a fully automatic polishing system for lens polishing. Background Technology

[0002] In optical polishing, traditional methods rely on manually adding polishing powder (such as cerium oxide or diamond powder) to the polishing slurry. Existing technologies have the following problems: 1. Poor precision control: Manual powder addition can easily lead to large fluctuations in powder quantity and unstable surface shape precision; 2. Poor process consistency: Different operators have significantly different powder addition methods, resulting in uneven distribution of polishing slurry; 3. Significant environmental impact: Open-air operations lead to dust dispersion, which is harmful to the health of operators; 4. Low efficiency and high cost: The powder utilization rate is low, the powder replacement time is long, and it cannot meet the polishing requirements of complex curved surfaces.

[0003] To address the aforementioned issues, this invention proposes an automated and intelligent fine polishing powder feeding system. Through quantitative powder supply, closed-loop control, and nozzle structure optimization, it improves the uniformity, stability, and production efficiency of the polishing slurry. Utility Model Content

[0004] The purpose of this invention is to provide an automatic powder feeding device for optical fine polishing, which realizes the timed and quantitative delivery, uniform mixing, and controllable spraying of polishing powder, and improves the dust pollution problem during the polishing process, thereby improving polishing accuracy, process consistency and production efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a fully automatic polishing system for lens polishing, comprising: A mixing tank containing polishing liquid; An automatic powder feeder, the output end of which is connected to the mixing tank, is used to feed polishing powder to the mixing tank at regular intervals and in a quantitative manner; A stirrer extends into the mixing tank to mix polishing powder and polishing liquid to form a polishing mixture; A peristaltic pump, the input end of which is connected to the mixing tank, is used to deliver the polishing mixture; A nozzle, connected to the peristaltic pump, is used to receive the polishing mixture and spray it onto the lens polishing surface; wherein... The peristaltic pump is controlled by a controller to achieve timed and quantitative delivery of the polishing mixture, and the nozzle has a radially gradient nozzle structure to increase the flow rate of the polishing mixture in the edge region.

[0006] Optionally, the automatic powder feeder includes a sealed powder storage bin and a spiral powder feeding mechanism connected thereto, the spiral powder feeding mechanism being driven by a motor for quantitatively dispensing polishing powder.

[0007] Optionally, the automatic powder feeder is equipped with a powder quantity detection sensor to detect the actual weight of the polishing powder being delivered and to feed it back to the controller for closed-loop adjustment.

[0008] Optionally, the stirrer is a rotating blade driven by an adjustable speed servo motor, and is provided with multiple stirring blades to improve the uniform mixing effect of polishing powder and polishing liquid.

[0009] Optionally, the pressure at which the nozzle sprays the polishing mixture is 0.05-0.2 MPa.

[0010] Optionally, the peristaltic pump integrates a PLC controller and is controlled by the PLC controller, which sets the conveying cycle and conveying volume according to the polishing process requirements.

[0011] Optionally, the nozzle orifice size gradually increases radially from the center to the edge, so as to increase the amount of polishing liquid sprayed in the edge area relative to the center area.

[0012] Optionally, the nozzle is a structure of multiple concentric annular nozzles, and the nozzles are evenly distributed in an annular shape to achieve full coverage of the lens polishing surface.

[0013] Optionally, the mixing tank is connected to the peristaltic pump via a polytetrafluoroethylene (PTFE) delivery pipe, and the peristaltic pump is connected to the nozzle via the PTFE delivery pipe, to prevent the polishing liquid from adhering or depositing during the delivery process.

[0014] Optionally, it also includes a dust collection module, which is disposed between the automatic powder feeder and the mixing tank, for recovering scattered polishing powder to reduce environmental pollution.

[0015] The beneficial effects of this utility model's technical solution are: Compared with existing manual powder addition methods, this invention can achieve timed and quantitative delivery and uniform mixing of polishing powder, with a powder quantity error of less than ±0.5%, significantly improving the stability of the PV value of the lens surface. The full-area spraying design ensures that the uniformity of coverage of complex curved surfaces exceeds 98%, guaranteeing process consistency. At the same time, through closed powder addition and dust recovery measures, the dust concentration is effectively reduced to below 0.1mg / m³, improving the operating environment. In addition, the powder utilization rate exceeds 95%, and the powder replacement time is shortened to less than 3 minutes, greatly improving production efficiency and reducing manual intervention costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fully automatic polishing system in an embodiment of the present invention; Figure 2 This is a top view of the fully automatic polishing system in an embodiment of this utility model; Figure 3 This is a schematic diagram of the nozzle structure in an embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Please see Figure 1 , Figure 2 and Figure 3 The diagram illustrates an embodiment of a fully automated polishing system for lens polishing, mounted on a polishing platform 100. The system includes a mixing tank 1 containing polishing fluid; an automatic powder feeder 2 connected to the mixing tank 1 at regular intervals and in a measured quantity to supply polishing powder to the mixing tank 1; a stirrer 3 extending into the mixing tank 1 to mix the polishing powder and polishing fluid to form a polishing mixture; a peristaltic pump 4 connected to the mixing tank 1 at its input to deliver the polishing mixture; and a nozzle 5 connected to the peristaltic pump 4 to receive the polishing mixture and spray it onto the lens polishing surface. The peristaltic pump 4 is controlled by a controller to achieve timed and measured delivery of the polishing mixture, and the nozzle 5 has a radially gradient nozzle structure 51 to increase the flow rate of the polishing mixture in the edge regions. Both the stirrer 2 and the peristaltic pump 4 are electrically connected to and controlled by a controller in a back-end system. The polishing platform 100 has a lens polishing surface 9 for placing lenses and performing polishing operations.

[0023] In this embodiment, the automatic powder feeder 2 includes a sealed powder storage bin 21 and a spiral powder feeding mechanism 23 connected thereto. The spiral powder feeding mechanism 23 is driven by a motor 22 and is used to quantitatively output polishing powder.

[0024] In this embodiment, the automatic powder feeder 2 is equipped with a powder quantity detection sensor (not shown, but it is fully understood that it is located at the polishing powder outlet) to detect the actual weight of the polishing powder being delivered and to feed it back to the controller for closed-loop adjustment.

[0025] In this embodiment, the stirrer 3 is a rotating blade 32 driven by an adjustable speed servo motor 31, and is provided with multiple stirring blades 33 to improve the uniform mixing effect of polishing powder and polishing liquid.

[0026] In this embodiment, the pressure of the polishing mixture sprayed by nozzle 5 is 0.05-0.2 MPa.

[0027] In this embodiment, the peristaltic pump 4 is integrated with a PLC controller (not shown) and is controlled by the PLC controller. The PLC controller sets the conveying cycle and conveying volume according to the polishing process requirements.

[0028] In this embodiment, the size of the nozzle 51 gradually increases radially from the center to the edge, so as to increase the amount of polishing liquid sprayed in the edge area relative to the center area.

[0029] In this embodiment, the nozzle 5 is a structure of multiple concentric annular nozzles 51, and the nozzles 51 are evenly distributed in an annular shape to achieve full coverage of the lens polishing surface 9.

[0030] In this embodiment, the mixing tank 1 is connected to the peristaltic pump 4 via the polytetrafluoroethylene delivery pipe 6, and the peristaltic pump 4 is connected to the nozzle 5 via the polytetrafluoroethylene delivery pipe 6, so as to avoid the polishing liquid from adhering or depositing during the delivery process.

[0031] In this embodiment, a dust collection module (not shown, but it is fully understood that it is located at the polishing powder outlet) is also included. The dust collection module is located between the automatic powder feeder and the mixing tank and is used to recover the scattered polishing powder to reduce environmental pollution.

[0032] The following description will further illustrate the characteristics and functions of this utility model.

[0033] This embodiment of an automatic powder-feeding device for optical fine polishing mainly includes a mixing tank, an automatic powder feeder, a stirrer, a peristaltic pump, nozzles, and a PLC controller. The mixing tank stores the polishing liquid. The top of the tank has two openings: one connects to the automatic powder feeder for powder input, and the other connects to the input of the peristaltic pump via a hose. Inside the tank is a stirrer driven by a servo motor. The blades are arranged along the height and radius of the tank to ensure thorough mixing of the powder and liquid to form a uniform polishing mixture, while preventing powder deposition. The mixing tank is made of corrosion-resistant material, allowing for long-term use, and the top can be fitted with a sealing cap to reduce dust leakage.

[0034] The automatic powder feeder includes a sealed powder storage hopper and a spiral powder feeding mechanism, driven by a motor to achieve timed and quantitative powder supply. Nano-grade polishing powder is added to the mixing tank through the feeder and continuously mixed by the agitator to form a stable polishing solution. A powder quantity sensor monitors the actual powder quantity in real time, and the PLC controller adjusts the powder feeding rate and cycle based on feedback to maintain powder quantity accuracy within ±0.1 g, thereby ensuring a stable and uniform concentration of the polishing solution.

[0035] The thoroughly mixed solution is drawn into and delivered to the nozzles by a peristaltic pump. The pump body is made of wear-resistant and chemically corrosion-resistant materials to ensure long-term stable operation. The nozzles are arranged in a ring, with the nozzles designed to distribute radially. The flow rate at the edge areas is relatively increased, effectively improving the uniformity of polishing solution coverage on complex curved surfaces. The nozzle outlet pressure is adjustable (0.05–0.2 MPa) to adapt to different polishing requirements. The entire delivery and spraying process is managed in a closed loop by a PLC controller. Based on feedback from the powder quantity sensor, the delivery cycle and flow rate of the peristaltic pump are dynamically adjusted to achieve precise and controllable spray volume and ensure consistency and surface accuracy in polishing complex curved surfaces.

[0036] During operation, the operator first adds the polishing slurry to the mixing tank and starts the agitator for pre-mixing to achieve initial homogenization. Then, the PLC controller parameters are set, including powder addition amount, powder addition cycle, peristaltic pump delivery cycle, and nozzle pressure. After system startup, the automatic powder feeder adds powder to the mixing tank according to the set cycle, while the agitator continuously rotates to form a uniform mixture. The mixture is then delivered to the nozzle via the peristaltic pump and sprayed onto the lens polishing surface 9. The radial gradient nozzle design ensures increased liquid volume at the edges and balanced liquid volume between the center and edges. Throughout the polishing process, the PLC uses closed-loop control to operate the automatic powder feeder and peristaltic pump, ensuring continuous and quantitative powder supply. Sealed powder inlets and an optional dust recovery device reduce dust concentration and improve the working environment. After polishing is complete, the system can stop all modules, empty the remaining mixture from the mixing tank, and clean the pipelines to prepare for the next batch of polishing.

[0037] In summary, through the above system structure and working method, this utility model achieves timed and quantitative delivery and uniform mixing of polishing powder, with a powder quantity error of less than ±0.5%, ensuring stable surface PV value. The radial gradient distribution design of the nozzle improves the uniformity of coverage of complex curved surfaces by more than 98%. The closed powder addition and dust recovery effectively reduce the dust concentration to below 0.1 mg / m³, while improving the powder utilization rate to over 95%, shortening the powder replacement time to within 3 minutes, reducing manual intervention, and significantly improving the fine polishing quality, process consistency, and production efficiency of optical components.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fully automated polishing system for lens polishing, mounted on a polishing platform, characterized in that, include: A mixing tank containing polishing liquid; An automatic powder feeder, the output end of which is connected to the mixing tank, is used to feed polishing powder to the mixing tank at regular intervals and in a quantitative manner; A stirrer extends into the mixing tank to mix polishing powder and polishing liquid to form a polishing mixture; A peristaltic pump, the input end of which is connected to the mixing tank, is used to deliver the polishing mixture; A nozzle, connected to the peristaltic pump, is used to receive the polishing mixture and spray it onto the lens polishing position; wherein... The peristaltic pump is controlled by a controller to achieve timed and quantitative delivery of the polishing mixture, and the nozzle has a radially gradient nozzle structure to increase the flow rate of the polishing mixture in the edge region.

2. The fully automatic polishing system according to claim 1, characterized in that, The automatic powder feeder includes a sealed powder storage bin and a spiral powder feeding mechanism connected thereto. The spiral powder feeding mechanism is driven by a motor and is used to quantitatively output polishing powder.

3. The fully automatic polishing system according to claim 1, characterized in that, The automatic powder feeder is equipped with a powder quantity detection sensor, which is used to detect the actual weight of the polishing powder being delivered and feed it back to the controller for closed-loop adjustment.

4. The fully automatic polishing system according to claim 1, characterized in that, The stirrer is a rotating blade driven by an adjustable speed servo motor, and is equipped with multiple stirring blades to improve the uniform mixing effect of polishing powder and polishing liquid.

5. The fully automatic polishing system according to claim 1, characterized in that, The pressure at which the polishing mixture is sprayed from the nozzle is 0.05-0.2 MPa.

6. The fully automatic polishing system according to claim 1, characterized in that, The peristaltic pump is integrated with and controlled by a PLC controller, which sets the conveying cycle and conveying volume according to the polishing process requirements.

7. The fully automatic polishing system according to claim 1, characterized in that, The nozzle orifice size gradually increases radially from the center to the edge, thereby increasing the amount of polishing liquid sprayed in the edge area relative to the center area.

8. The fully automatic polishing system according to claim 1, characterized in that, The nozzle is a structure of multiple concentric annular nozzles, which are evenly distributed in an annular shape to achieve full coverage of the lens polishing surface.

9. The fully automatic polishing system according to claim 1, characterized in that, The mixing tank is connected to the peristaltic pump via a polytetrafluoroethylene (PTFE) delivery pipe, and the peristaltic pump is connected to the nozzle via a PTFE delivery pipe to prevent the polishing liquid from adhering or depositing during the delivery process.

10. The fully automatic polishing system according to claim 1, characterized in that, It also includes a dust collection module, which is located between the automatic powder feeder and the mixing tank, for recovering scattered polishing powder to reduce environmental pollution.

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