Curved optical glass polishing machine

Abstract

The invention belongs to the technical field of polishing machines, and particularly discloses a curved optical glass polishing machine which comprises a cabinet, a splash-proof bin is arranged above the cabinet, a profiling suction and abutting mechanism is arranged in the splash-proof bin, and a PLC is fixedly installed on the outer wall of one side of the cabinet. The rear end of the cabinet is connected with a polishing mechanism through an arranged storage lifting mechanism, a suction mechanism is arranged on one side of the interior of the splash-proof bin in a communicating mode, the profiling suction abutting mechanism further comprises a profiling disc table, the outer edge of the profiling disc table is bent downwards, and a wear-resisting flexible particle pad is machined on the outer surface of the profiling disc table. According to the curved glass polishing device, dynamic balance fixing can be achieved, the problems of displacement, scratches and damage caused by unstable fixing in the curved glass polishing process are solved, and high-precision, self-adaptive and full-automatic polishing is achieved.

Description

A curved optical glass polishing machine Technical Field

[0001] This invention belongs to the field of polishing machine technology, and specifically discloses a curved optical glass polishing machine. Background Technology

[0002] In high-end manufacturing fields such as optical instruments, new energy vehicles, high-end electronic equipment, and aerospace detection devices, curved optical glass is finding increasingly wide applications due to its excellent optical transmission performance, lightweight structural characteristics, and high adaptability to complex assembly spaces. From 3D curved screens in smartphones and wedge-shaped light guide glass in automotive head-up display (HUD) systems to aspherical reflectors in astronomical telescopes and optical lenses in lidar, curved optical glass has become a key basic material for many core components. Its surface polishing precision directly determines the imaging quality, signal transmission efficiency, and durability of the final product. For example, the polishing roughness of automotive HUD glass must be controlled within Ra 0.01μm; otherwise, it will lead to distortion of the projected image. If the surface flatness deviation of a lidar lens exceeds 0.005mm, it will directly affect the ranging accuracy and detection range. Therefore, downstream industries have placed stringent requirements on the stability, accuracy, and consistency of the polishing process for curved optical glass.

[0003] In the current process of polishing curved optical glass, the core technical bottleneck lies in the coordination and adaptation between workpiece clamping and polishing operations. Currently, the mainstream clamping solutions in the industry are mainly divided into two categories: one is rigid chuck clamping, which uses mechanical clamps to firmly fix the glass edge. While this solution can provide strong clamping force, the contact stress between the clamp and the glass edge can easily cause micro-cracks in the glass and cannot adapt to surfaces with complex curvatures. The other is contour-following wear-resistant clamping, which is the commonly used solution in the industry. The curved optical glass is clamped onto the outside of a pre-made contour-following wear-resistant clamping workpiece with a corresponding curvature. The initial positioning is achieved by the contact between the curved contour of the clamping workpiece and the outer wall of the glass, providing basic support for the polishing machine's universal head polishing operation. However, the contour-following clamping solution has revealed significant technical defects in practical applications.

[0004] Curved optical glass and contour-following clamped workpieces rely solely on contour fit for positioning, lacking active clamping force. During polishing, the lateral friction and local pressure applied by the polishing machine's universal head disrupt the glass's force balance, causing minute displacement or deflection. This displacement not only causes the polishing trajectory to deviate from the preset path, resulting in scratches, unevenness, and other precision defects on the polished surface, severely affecting optical performance, but may also lead to collisions due to relative positional deviations between the glass and the universal head, causing glass breakage or damage to polishing tools, significantly increasing production costs. Furthermore, excessive local pressure during polishing can easily cause indentations or chipping on the curved glass surface; insufficient pressure will fail to achieve the desired polishing effect. Simultaneously, the frictional contact between the rigid clamping material and the glass surface can easily cause scratches, increasing the workload of subsequent grinding processes. Therefore, there is an urgent need to design a device that combines stability and operational compatibility to address the dual pain points of displacement interference and operational interference in traditional solutions, providing a reliable guarantee for high-precision polishing of curved optical glass. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of precision defects, surface damage, and low processing efficiency caused by unstable fixing during the polishing process of curved optical glass. The invention proposes a curved optical glass polishing machine, comprising a cabinet, a splash-proof chamber at the top of the cabinet, a contour-following suction mechanism inside the splash-proof chamber, a PLC controller fixedly installed on one outer wall of the cabinet, a polishing mechanism connected to the rear of the cabinet via a lifting mechanism, and a suction mechanism connected to one side of the splash-proof chamber. The contour-following suction mechanism further includes a contour-following circular table. The outer edges of the platform are all curved downwards, and the outer surface is processed with wear-resistant flexible granular pads. The contoured disc platform is connected to several sets of contoured curved rods through an internal pressure diversion mechanism. The outer surface of the contoured disc platform is provided with contoured slots for assembly at the positions of the contoured curved rods. The contoured curved rods have the same curvature as the contoured disc platform, and the contoured curved rods are internally connected to contoured curved tubes. Negative pressure nozzles are installed at equal intervals above the interior of the contoured curved tubes. Multiple pressure sensors are installed in series on both sides of the outer surface of the contoured curved rods.

[0006] In the above technical solution, the suction mechanism further includes a suction machine installed at the bottom of one side inside the cabinet, and the suction machine is connected to the splash guard through a suction pipe installed on the inside side.

[0007] In the above technical solution, the lifting mechanism further includes a housing, a support frame, and hydraulic cylinders. The support frame is fixedly installed on the outer wall of the rear end of the cabinet. Two sets of hydraulic cylinders are provided and installed on both sides above the support frame. The telescopic ends of the two hydraulic cylinders are connected to the housing. The polishing mechanism is located inside the housing.

[0008] In the above technical solution, the polishing mechanism further includes a servo motor, a round polishing disc, a rotating mechanism, and a connecting joint. The servo motor is fixedly installed inside the housing, and the round polishing disc is fixedly installed on the output shaft of the servo motor through the connecting joint installed above the shaft center.

[0009] In the above technical solution, the pressure diversion mechanism further includes a diversion shell fixedly embedded in the middle of the contoured disc platform. A diverter is provided inside the diversion shell. Four pipes are provided inside the diverter, and a connecting member is provided above each of the four pipes. A hollow rotating shaft is installed through the lower part of the diversion shell. The hollow rotating shaft is connected to the inside of the diverter. A rotating member is provided on the lower part of the outside of the hollow rotating shaft. A rotary motor is connected to the bottom of the hollow rotating shaft. The rotary motor is located in the middle of the bottom of the inner side of the cabinet.

[0010] In the above technical solution, the connecting component further includes a branch pipe installed inside one of the pipelines, a control valve is provided inside the branch pipe, the end of the branch pipe away from the control valve is connected to the inside of the conformal curved pipe, and a pressure-boosting contact component is provided at the end of the conformal curved pipe away from the axis.

[0011] In the above technical solution, the rotating component further includes a rotary joint sleeved on the lower part of the hollow rotating shaft. The inner edge of the rotary joint and the contact surface near the hollow rotating shaft are rotatably connected by a sealed bearing. A connecting pipe is installed inside the rotary joint on one side, and a negative pressure device is installed on the side of the connecting pipe away from the rotary joint. The negative pressure device is fixedly installed inside the cabinet on the side away from the suction machine.

[0012] In the above technical solution, the pressurizing contact component further includes a threaded sealing shell that is threadedly installed on the end of the conformal curved tube away from the axis, and a piston reset component is slidably installed inside the threaded sealing shell.

[0013] In the above technical solution, the piston reset component further includes a piston rod that is slidably mounted on one end of the threaded sealing shell and the contoured curved tube. A spring is sleeved on the outer end of the piston rod away from the threaded sealing shell. A connector is provided at the end of the piston rod, and an arc-shaped abutment is fixedly installed on the outer side of the connector.

[0014] In the above technical solution, a spraying mechanism is further provided on one side of the outer wall of the shell. The spraying mechanism includes connecting frames installed on the outer walls of both sides of the shell. A rigid pipe is inserted inside the two sets of connecting frames. Both ends of the rigid pipe are connected to a bent telescopic pipe, and a nozzle is connected to the end of the bent telescopic pipe away from the rigid pipe.

[0015] Compared with existing technologies, this invention has the following advantages: 1. By cooperating with the negative pressure nozzle in the contour-following suction mechanism and multiple pressure sensors, a uniform and adjustable adsorption force can be applied to curved glass during the polishing process. Based on the real-time pressure distribution of the polishing mechanism, the adsorption intensity in different areas is dynamically adjusted, forming a dual effect of pressure and adsorption. This effectively overcomes the problem of unstable fixation caused by traditional contour fitting alone, ensuring that the glass maintains zero displacement or micron-level stability throughout the polishing process. This guarantees consistent polished surface accuracy, no scratches, and no deviations, making it particularly suitable for optical curved surface parts with extremely high surface shape error requirements.

[0016] 2. The flexible and adjustable structure of the contoured curved rod and contoured disc stage, combined with a pressure diversion mechanism and pressurizing contact components, allows for automatic adjustment of the adsorption and support points according to the glass curvature, achieving full coverage and fit on complex curved surfaces (including corners and transition areas). The polishing mechanism, through its lifting and multi-directional adjustment function, can flexibly adapt to different polishing angles and trajectories, avoiding polishing blind spots caused by structural interference.

[0017] 3. The system uses a pressure sensor to monitor the contact pressure between the glass and the contoured crank in real time, and adjusts the operating parameters of the negative pressure device and polishing mechanism via a PLC controller. This allows for dynamic adjustment of the adsorption force and polishing pressure during the polishing process, preventing glass breakage or polishing tool wear due to excessive local pressure, thus improving process safety and stability.

[0018] 4. By setting up a suction mechanism and a splash guard to work together, micron-sized dust and debris generated during the polishing process are continuously removed, preventing secondary contamination or microscopic scratches on the polished surface. The spray mechanism uses multi-angle adjustable nozzles to precisely spray polishing fluid or coolant, achieving real-time cooling and surface cleaning of the polished area. This effectively inhibits thermal deformation and material deterioration caused by frictional heat accumulation, further improving the surface finish and optical performance after polishing. Attached Figure Description

[0019] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 is a schematic diagram of the connection structure of the inner part of the cabinet of the present invention; Figure 4 is a schematic diagram of the connection structure between the lifting mechanism and the polishing mechanism of the present invention; Figure 5 is a schematic diagram of the disassembled connection structure between the contoured disc platform and the contoured curved rod of the present invention; Figure 6 is a schematic diagram of the connection structure between the contoured curved tube and the distributor of the present invention; Figure 7 is a schematic diagram of the connection structure between the contoured curved tube, the negative pressure nozzle, and the pressurizing contact part of the present invention; Figure 8 is a cross-sectional view of the internal air passage flow structure between the contoured curved tube and the piston rod of the present invention; Figure 9 is an enlarged schematic diagram of the structure at point A in Figure 4 of the present invention.

[0021] In the diagram: 1. Cabinet; 2. Polishing mechanism; 201. Servo motor; 202. Rounding polishing disc; 203. Rotation mechanism; 204. Connecting joint; 3. Suction mechanism; 301. Suction pipe; 302. Suction machine; 4. Contouring suction mechanism; 401. Contouring disc platform; 402. Hollow rotating shaft; 403. Contouring slot; 404. Rotary joint; 405. Contouring crank; 406. Diverter shell; 407. Wear-resistant flexible particle pad; 5. PLC controller; 6. Spraying mechanism; 601. 602. Connecting frame; 603. Rigid pipe; 604. Bending telescopic pipe; 605. Nozzle; 7. Loading and lifting mechanism; 701. Housing; 702. Support frame; 703. Hydraulic cylinder; 8. Splash chamber; 9. Negative pressure device; 10. Rotary motor; 11. Connecting pipe; 12. Pressure sensor; 13. Contouring curved pipe; 14. Negative pressure suction nozzle; 15. Arc-shaped support bar; 16. Diverter; 17. Control valve; 18. Branch pipe; 19. Threaded sealing shell; 20. Spring; 21. Connector; 22. Piston rod.

[0022] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this invention.

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

[0026] As shown in Figures 1-9, a curved optical glass polishing machine includes a cabinet 1, a splash-proof chamber 8 on top of the cabinet 1, a contour-following suction mechanism 4 inside the splash-proof chamber 8, a PLC controller 5 fixedly installed on one side of the outer wall of the cabinet 1, and a polishing mechanism 2 connected to the rear end of the cabinet 1 via a lifting mechanism 7. A suction mechanism 3 is connected to one side of the interior of the splash-proof chamber 8. The contour-following suction mechanism 4 also includes a contour-following disc table 401, the outer edges of which are all curved downwards, and the outer surface is processed with wear-resistant flexible particle pads 407. The contour-following disc table 401 is connected to several sets of contour-following curved rods 405 via an internal pressure diversion mechanism. Contouring slots 403 are opened on the outer surface of the contour-following disc table 401 at the positions corresponding to the positions of the contour-following curved rods 405. The curvature of the contour-following curved rods 405 is consistent with that of the contour-following disc table 401. Several sets of contoured curved rods 405 are internally connected and fitted with contoured curved tubes 13, and negative pressure suction nozzles 14 are equally spaced and installed above the interior of the contoured curved tubes 13. Multiple pressure sensors 12 are installed in series on both sides of the outer surface of the several sets of contoured curved rods 405. In one possible embodiment, the contoured disc stage 401 and the wear-resistant flexible particle pad 407 provide a bearing surface adapted to the shape of the curved glass to prevent scratches. The pressure sensors 12 monitor the pressure state of each area of ​​the glass in real time, providing a basis for dynamic pressure adjustment. The negative pressure suction nozzles 14 are arranged along the contoured curved tubes 13 to achieve multi-point adsorption and improve fixation stability. The wear-resistant flexible particle pads 407 are polyurethane elastomers and are distributed on the outer surface away from the contoured curved rods 405. Specifically, after the glass is placed on the contoured disc stage 401, negative pressure is applied, and the airflow passes through the contoured curved tubes 13 and is sucked up by the negative pressure suction nozzles 14. During the polishing process, if the pressure on one side is abnormal, such as the glass shifting due to pressure applied by the polishing mechanism 2, the signal of the pressure sensor 12 in that area will change, and the PLC controller 5 will adjust the corresponding air path to enhance the adsorption force on the other side and achieve dynamic balance and fixation.

[0027] The suction mechanism 3 includes a suction machine 302 connected to the bottom of one side of the cabinet 1. The suction machine 302 is connected to the splash guard 8 through a suction pipe 301 connected to the inside side. In one possible embodiment, the suction machine 302 is connected to the splash guard 8 through the suction pipe 301, and continuously suctions the suspended dust in the chamber during the polishing process to maintain clear vision and polishing quality.

[0028] The lifting mechanism 7 includes a housing 701, a support frame 702, and a hydraulic cylinder 703. The support frame 702 is fixedly installed on the outer wall of the rear end of the cabinet 1. Two sets of hydraulic cylinders 703 are provided and are respectively installed on both sides above the support frame 702. The extension ends of the two hydraulic cylinders 703 are connected to the housing 701. The polishing mechanism 2 is located inside the housing 701. In one possible embodiment, the hydraulic cylinders 703 are controlled by the PLC controller 5 and synchronously push the housing 701 to move up and down along the support frame 702 to precisely control the contact pressure and position of the round polishing disc 202 and the curved glass surface.

[0029] The polishing mechanism 2 includes a servo motor 201, a round polishing disc 202, a rotating mechanism 203, and a connecting joint 204. The servo motor 201 is fixedly installed inside the housing 701, and the round polishing disc 202 is fixedly installed on the output shaft of the servo motor 201 through the connecting joint 204 installed above the shaft. In one possible embodiment, the servo motor 201 drives the round polishing disc 202 to rotate, and transmits torque through the connecting joint 204 to achieve uniform polishing of the curved glass surface.

[0030] PLC controller 5 can adjust the speed and direction of servo motor 201 to adapt to complex curved areas. At the same time, PLC controller 5 also controls other lifting, pressure control and other components to achieve automated control. PLC controller 5 is a common industrial programmable controller and belongs to existing technology, so it will not be described in detail.

[0031] The pressure diversion mechanism includes a diversion shell 406 fixedly embedded in the middle of the contoured disc stage 401. A diverter 16 is provided inside the diversion shell 406. The diverter 16 has four pipes inside, and each of the four pipes has a connecting member at the top. A hollow rotating shaft 402 is installed through the bottom of the diversion shell 406. The hollow rotating shaft 402 is connected to the inside of the diverter 16. A rotating member is provided on the bottom of the hollow rotating shaft 402. A rotary motor 10 is connected to the bottom of the hollow rotating shaft 402. The rotary motor 10 is located in the middle of the bottom inside the cabinet 1. In one possible embodiment, the diverter 16 realizes multi-path independent air circuit control and supports zoned pressure regulation. The hollow rotating shaft 402 both drives the rotational motion and serves as a negative pressure airflow channel, with a compact structure. Specifically, the negative pressure airflow enters the diverter 16 through the hollow rotating shaft 402 and then flows to each contoured crank 405 after diversion. During the polishing process, the rotary motor 10 drives the hollow rotating shaft 402 and the entire contour disc stage 401 to rotate, so that each area of ​​the glass passes through the polishing station in sequence. It should be noted that the flow divider 16 used in this invention is a multi-pipeline independent control airflow management structure, which integrates an air inlet, a flow divider chamber, a control valve and a pressure monitoring module, and can realize independent pressure regulation of four air paths.

[0032] The connecting element includes a branch pipe 18 installed inside one of the pipes. A control valve 17 is installed inside the branch pipe 18. The end of the branch pipe 18 away from the control valve 17 is connected to the inside of the contoured curved pipe 13. A pressure-boosting contact is installed at the end of the contoured curved pipe 13 away from the axis. In one possible embodiment, the control valve 17 realizes the opening and closing of the air passage and the regulation of the flow rate. In response to the signal of the pressure sensor 12, when a pressure signal is received, the pressure-boosting contact provides a mechanical clamping force when the airflow is enhanced. Specifically, when the air passage on one side is enhanced, the airflow pushes the piston reset member through the branch pipe 18 to actuate, so that the arc-shaped abutment 15 presses against the edge of the glass, combined with enhanced negative pressure adsorption.

[0033] The rotating component includes a rotary joint 404 sleeved below the hollow rotating shaft 402. The inner edge of the rotary joint 404 and the contact surface near the hollow rotating shaft 402 are rotatably connected by a sealed bearing. A connecting pipe 11 is installed inside the rotary joint 404, and a negative pressure device 9 is installed on the side of the connecting pipe 11 away from the rotary joint 404. The negative pressure device 9 is fixedly installed inside the cabinet 1 and away from the suction machine 302. In one possible embodiment, the rotary joint 404 ensures that the air passage is continuously connected when the shaft rotates, the sealed bearing prevents leakage, and the negative pressure device 9 provides a stable negative pressure source that is not affected by the rotation of the turntable. Specifically, the negative pressure device 9 is connected to the rotary joint 404 through the connecting pipe 11. The rotary joint 404 rotates with the hollow rotating shaft 402 but maintains a continuous air passage, achieving continuous adsorption during rotation.

[0034] The pressurizing abutment includes a threaded sealing shell 19 threadedly mounted on the end of the contoured curved tube 13 away from the axis, and a piston reset component is slidably mounted inside the threaded sealing shell 19; in one possible embodiment, the threaded sealing shell 19 is easy to disassemble and maintain, the piston rod 22 and the spring 20 form a reset mechanism, and the arc-shaped abutment 15 is adapted to the shape of the glass edge to provide flexible and strong edge fixation.

[0035] The piston reset component includes a piston rod 22 that is slidably mounted on one end inside the threaded sealing shell 19 and the contoured curved tube 13. A spring 20 is sleeved on the outer end of the piston rod 22 away from the threaded sealing shell 19. A connector 21 is provided at the end of the piston rod 22, and an arc-shaped abutment 15 is fixedly mounted on the outer side of the connector 21. In one possible embodiment, when the air pressure increases, it pulls the piston rod 22 inward, compressing the spring 20, and the arc-shaped abutment 15 is pressed tightly against the edge of the curved glass. When the air pressure decreases, the piston rod 22 is reset and disengaged by the reset force of the spring 20.

[0036] A spraying mechanism 6 is provided on one side of the outer wall of the housing 701. The spraying mechanism 6 includes connecting frames 601 respectively installed on the outer walls of both sides of the housing 701. A rigid tube 602 is inserted inside the two sets of connecting frames 601. Both ends of the rigid tube 602 are connected to a bent telescopic tube 603, and a nozzle 604 is connected to the end of the bent telescopic tube 603 away from the rigid tube 602. In one possible embodiment, the bent telescopic tube 603 allows the nozzle 604 to be adjusted at multiple angles to aim at the polishing area. The nozzle 604 sprays polishing liquid or cleaning liquid to cool down and wash away residual dust, directly acting on the polishing contact area, reducing frictional heat, cleaning the surface, and improving the polishing smoothness. It should be noted that since the curved glass is completely covered outside the contoured disc stage 401 during the process, it will not come into contact with the negative pressure suction nozzle 14 during spraying, and therefore will not affect the use of the negative pressure suction nozzle 14.

[0037] In summary, this invention achieves adaptive adsorption of curved glass through the contour-following suction mechanism 4, and dynamically adjusts the airflow by combining the pressure sensor 12 and the flow divider 16. When pressure is applied to the polishing side, the adsorption and mechanical clamping on the opposite side are simultaneously enhanced, thus maintaining zero displacement of the curved glass throughout the polishing process. The lifting mechanism 7 and the polishing mechanism 2 provide precise polishing actions, while the suction mechanism 3 and the spray mechanism 6 ensure a clean working environment. Together, they constitute an adaptive, semi-automatic curved optical glass polishing device.

[0038] Working principle: The curved optical glass to be polished is placed on the contour disc stage 401, with its lower surface in contact with the wear-resistant flexible particle pad 407. Because the contour disc stage 401 has downward-curved edges and multiple contour slots 403, the contouring rod 405 can be stably fitted inside the contour slots 403, and its curvature is the same as the outer surface curvature of the contour disc stage 401. The curved glass can achieve initial fitting and positioning along the curvature of the contour disc stage 401. Subsequently, the hydraulic cylinder 703 pushes the housing 701 and the internal polishing mechanism 2 downward, causing the round polishing disc 202 to contact the surface of the curved glass. The servo motor 201 drives the round polishing disc 202 to rotate, performing the polishing operation. Simultaneously, the negative pressure device 9 is activated, and the negative pressure airflow sequentially enters the distributor 16 through the connecting pipe 11, the rotary joint 404, and the hollow rotating shaft 402. The distributor 16 distributes the negative pressure to each branch pipe 18, and then transmits it to the negative pressure suction nozzle 14 via the contour curved pipe 13. The negative pressure suction nozzle 14 generates an adsorption force, which stably adsorbs the glass onto the surface of the contoured disc stage 401.

[0039] When the polishing mechanism 2 performs rotary polishing on one side of the curved glass, the mechanical pressure in that area causes the glass to tend to shift to the opposite side. At this time, the pressure sensors 12 installed on both sides of the contouring rod 405 detect the pressure distribution in real time. After receiving the signal, the PLC controller 5 immediately adjusts the control valve 17 of the corresponding direction pipeline in the distributor 16, opens the air path of the opposite side of the curved glass, and enhances the negative pressure in the contouring tube 13 on that side, thereby significantly increasing the suction force of the negative pressure suction nozzle 14 on the opposite side, forming a dynamic torque balance. While enhancing the suction on the opposite side, it works synchronously with the pressurizing contact element corresponding to that area: the enhanced negative pressure airflow pushes the piston rod 22 to move towards the glass edge, compresses the spring 20, and makes the arc-shaped abutment strip 15 tightly press against the outer edge of the glass. The mechanical clamping force and the enhanced negative pressure adsorption force work together to further constrain the glass edge, counteracting the displacement tendency caused by the polishing thrust and preventing the glass from warping or slightly displacing under the asymmetric polishing force. With dynamic balance ensured, the rotary motor 10 drives the hollow rotating shaft 402 and the contoured disc stage 401, along with the glass workpiece, to rotate slowly. The round polishing disc 202 of the polishing mechanism 2 can then continuously and stably polish the entire curved surface of the glass without displacement interference. Dust generated during polishing is extracted in real time from the splash-proof chamber 8 by the suction machine 302 through the suction pipe 301. Simultaneously, the nozzles 604 of the spraying mechanism 6 spray coolant or cleaning fluid to cool and clean the polishing area. After polishing, all mechanisms reset. The negative pressure device 9 stops, the adsorption force is released, the control valve 17 closes, the piston rod 22 retracts under the action of the spring 20, and the arc-shaped abutment strip 15 disengages. The operator can then safely remove the polished glass.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A curved optical glass polishing machine, comprising a cabinet (1), characterized in that: A splash guard (8) is provided above the cabinet (1). A contour suction mechanism (4) is provided inside the splash guard (8). A PLC controller (5) is fixedly installed on one side of the outer wall of the cabinet (1). A polishing mechanism (2) is connected to the rear end of the cabinet (1) through a placement lifting mechanism (7). A suction mechanism (3) is connected to one side of the interior of the splash guard (8). The contour suction mechanism (4) also includes a contour disc platform (401). The outer edges of the contour disc platform (401) are all bent downwards, and the outer surface is processed with a wear-resistant flexible particle pad (407). The contour disc platform (401) is connected to the polishing mechanism (2) through a placement lifting mechanism (7). The internal pressure diversion mechanism is connected to several sets of contoured cranks (405). The outer surface of the contoured disc platform (401) is provided with contoured slots (403) for assembly at the positions of several sets of contoured cranks (405). The several sets of contoured cranks (405) have the same curvature as the contoured disc platform (401). The contoured cranks (405) are connected to the inside of the several sets of contoured cranks (405) and a contoured curved tube (13) is installed inside. The upper part of the contoured curved tube (13) is connected to a negative pressure suction nozzle (14) at equal distances. Multiple pressure sensors (12) are installed in series on both sides of the outer surface of the several sets of contoured cranks (405).

2. The curved optical glass polishing machine according to claim 1, characterized in that: The suction mechanism (3) includes a suction machine (302) installed at the bottom of one side inside the cabinet (1). The suction machine (302) is connected to the splash guard (8) through a suction pipe (301) installed on one side inside.

3. The curved optical glass polishing machine according to claim 1, characterized in that: The lifting mechanism (7) includes a housing (701), a support frame (702), and a hydraulic cylinder (703). The support frame (702) is fixedly installed on the outer wall of the rear end of the cabinet (1). There are two sets of hydraulic cylinders (703), which are installed on both sides above the support frame (702). The telescopic ends of the two hydraulic cylinders (703) are connected to the housing (701). The polishing mechanism (2) is installed inside the housing (701).

4. A curved optical glass polishing machine according to claim 3, characterized in that: The polishing mechanism (2) includes a servo motor (201), a round polishing disc (202), a rotating mechanism (203), and a connecting section (204). The servo motor (201) is fixedly installed inside the housing (701), and the round polishing disc (202) is fixedly installed on the output shaft of the servo motor (201) through the connecting section (204) installed above the shaft.

5. A curved optical glass polishing machine according to claim 2, characterized in that: The pressure diversion mechanism includes a diversion shell (406) fixedly embedded in the middle of the contoured disc platform (401). A diverter (16) is provided inside the diversion shell (406). Four pipes are provided inside the diverter (16), and a connecting member is provided above the four pipes. A hollow rotating shaft (402) is installed through the bottom of the diversion shell (406). The hollow rotating shaft (402) is connected to the inside of the diverter (16). A rotating member is provided below the outside of the hollow rotating shaft (402). A rotary motor (10) is connected to the bottom of the hollow rotating shaft (402). The rotary motor (10) is located in the middle of the bottom of the inner side of the cabinet (1).

6. A curved optical glass polishing machine according to claim 5, characterized in that: The connecting element includes a branch pipe (18) installed inside one of the pipes. A control valve (17) is provided inside the branch pipe (18). The end of the branch pipe (18) away from the control valve (17) is connected to the inside of the contoured curved pipe (13). A pressure-boosting contact element is provided at the end of the contoured curved pipe (13) away from the axis.

7. A curved optical glass polishing machine according to claim 5, characterized in that: The rotating component includes a rotary joint (404) sleeved on the lower part of the hollow rotating shaft (402). The inner edge of the rotary joint (404) and the contact surface near the hollow rotating shaft (402) are rotatably connected by a sealed bearing. A connecting pipe (11) is installed inside the rotary joint (404). A negative pressure device (9) is installed on the side of the connecting pipe (11) away from the rotary joint (404). The negative pressure device (9) is fixedly installed inside the cabinet (1) and away from the suction machine (302).

8. A curved optical glass polishing machine according to claim 6, characterized in that: The pressurizing contact element includes a threaded sealing shell (19) threadedly mounted on the end of the conformal curved tube (13) away from the axis, and a piston reset element is slidably mounted inside the threaded sealing shell (19).

9. A curved optical glass polishing machine according to claim 8, characterized in that: The piston reset component includes a piston rod (22) that is slidably mounted on one end inside the threaded sealing shell (19) and the contoured curved tube (13). A spring (20) is sleeved on the end of the piston rod (22) away from the threaded sealing shell (19). A connector (21) is provided at the end of the piston rod (22). An arc-shaped abutment (15) is fixedly installed on the outside of the connector (21).

10. A curved optical glass polishing machine according to claim 3, characterized in that: A spraying mechanism (6) is provided on one side of the outer wall of the housing (701). The spraying mechanism (6) includes connecting frames (601) installed on the outer walls of both sides of the housing (701). A rigid tube (602) is inserted inside the two sets of connecting frames (601). Both ends of the rigid tube (602) are connected to a bent telescopic tube (603), and a nozzle (604) is connected to the end of the bent telescopic tube (603) away from the rigid tube (602).

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