Multifunctional unloading method and device for polishing a curved optical element

Abstract

The present application relates to a kind of multifunctional unloading device of curved surface optical element polishing, install in the movable end of mechanical arm, including the base body with the operation opening of bottom, for each component installation support, annular air knife and suction cup located in the central part of annular air knife are arranged in the base body, the suction end of the suction cup extends to the operation opening of base body, pipeline is arranged in the base body, the pipeline is communicated with annular air knife by Laval tube, first air control check valve is arranged between the Laval tube and the negative pressure cavity of suction cup, when the pipeline transports compressed gas to Laval tube, the taper structure of Laval tube makes gas accelerate and form high-pressure gas flow and spray from annular air knife, while the gradually expanding section of Laval tube generates negative pressure by Venturi effect, and the first air control check valve is conducted to make suction cup form suction negative pressure.In the present application, only one compressed air can realize the function of blowing and vacuum suction, and the resource utilization efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of optical component processing technology, specifically to a multifunctional blanking method and apparatus for polishing curved optical components. Background Technology

[0002] In optical component manufacturing, the finishing and polishing processes of curved optical components (such as various lenses) play a decisive role in the final performance and quality of the product. However, after the lens is polished, during the transfer process from the mold, due to the presence of liquid between the glass lens and the mold, a solid-liquid-solid adsorption interface effect is formed under the combined effect of various physical factors, making the lens transfer process difficult.

[0003] Existing technologies have proposed various solutions aimed at disrupting the internal solid-liquid interface to facilitate smooth workpiece transfer during processing. For example, reducing the contact area through side-sliding can decrease adhesion, but this method may cause scratches or breakage to the lens due to improper operation. Using a clamp to directly load and remove the lens along its normal direction can lead to lens damage, equipment damage, and even personnel injury due to overload. Using compressed gas to disrupt the solid-liquid interface can result in the lens being blown off. Reducing the surface tension coefficient of water through temperature changes is difficult to control precisely in practice, has limited effectiveness, is time-consuming, and lacks practicality. While ultrasonic vibration can disrupt adhesion to some extent, it requires sophisticated equipment and may introduce additional interference. Among these, using a vacuum chuck to directly transfer the lens along its normal direction offers advantages in reducing scratches and damage caused by clamping, but when faced with the strong and complex adhesion between the lens and the mold, relying solely on a vacuum chuck cannot achieve efficient and reliable transfer.

[0004] To address the aforementioned problems, this invention proposes a multifunctional blanking method and apparatus for polishing curved optical elements. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide a multifunctional blanking method and apparatus for polishing curved optical elements, so as to solve the above-mentioned technical problems.

[0006] To achieve the objectives of this invention, the technical solution adopted is as follows:

[0007] A multifunctional unloading device for polishing curved optical elements is installed on the movable end of a robotic arm. It includes a base with a working opening at the bottom. Inside the base is an annular air knife and a suction cup located at the center of the annular air knife. The suction end of the suction cup extends to the working opening of the base. A pipeline is installed inside the base, and the pipeline is connected to the annular air knife via a Laval tube. A first pneumatically controlled one-way valve is installed between the Laval tube and the negative pressure chamber of the suction cup. When compressed gas is supplied to the Laval tube via the pipeline, the tapered structure of the Laval tube accelerates the gas, forming a high-pressure airflow that is ejected from the annular air knife. Simultaneously, the expanding section of the Laval tube generates negative pressure through the Venturi effect. The first pneumatically controlled one-way valve is activated, causing the suction cup to form an adsorption negative pressure.

[0008] Furthermore, the base includes an upper shell and a lower shell fixedly connected to the bottom of the upper shell. An end cap is fixedly connected to the top of the upper shell, and a floating joint for connecting to a robotic arm is fixedly connected to the top of the end cap. An airflow reversing assembly is provided inside the upper shell, and an airflow control assembly is provided inside the lower shell.

[0009] Furthermore, the airflow reversing assembly includes a normally closed three-way directional valve fixedly connected to the inner wall of the upper housing. One port of the normally closed three-way directional valve penetrates the upper housing and is connected to a quick-connect fitting via a thread. The bottom port of the normally closed three-way directional valve is connected to a suction cup. An elbow is fixedly connected to the port of the normally closed three-way directional valve away from the quick-connect fitting. The end of the elbow away from the normally closed three-way directional valve is fixedly connected to a pipeline. A drive component for changing the working state of the normally closed three-way directional valve is fixedly connected to the inner wall of the upper housing.

[0010] Furthermore, the driving component includes a sliding link with a first connecting arm on its surface. The first connecting arm is connected to a normally closed three-position three-way directional valve via screws. A limit bracket is fixedly connected to the inner wall of the upper housing. A mounting protrusion is fixedly connected to the surface of the sliding link. A first spring is fixedly connected to the bottom of the mounting protrusion. One end of the first spring is fixedly connected to the inner bottom wall of the limit bracket. A second spring is fixedly connected to the top of the mounting protrusion. A shaft hole is provided on the surface of the upper housing, and a pin is fixedly fitted inside the shaft hole.

[0011] Furthermore, a fixing frame is fixedly connected to the inner wall of the upper housing, and a first electromagnetic push rod and a second electromagnetic push rod with opposite output shafts are fixedly connected to the surface of the fixing frame respectively. A second connecting arm is fixedly connected to the top of the sliding link, and the second connecting arm is connected to the output ends of the first electromagnetic push rod and the second electromagnetic push rod. A manual switch button is fixedly connected to the outer side of the sliding link. An clearance opening is provided on the surface of the upper housing, and the manual switch button is located in the clearance opening. A limit protrusion is provided on the inner wall of the clearance opening.

[0012] Furthermore, the annular air knife includes an upper plate and a lower plate connected by screws. The air inlet of the upper plate is connected to a Laval tube. An air chamber is provided at the top of the lower plate. The Laval tube is connected to the air chamber. An annular outlet communicating with the air chamber is formed between the upper plate and the lower plate. A guide wall is formed on the inner annular surface of the lower plate. A blocking wall protruding from the guide wall is formed at the bottom of the upper plate.

[0013] Furthermore, the airflow control assembly includes a Y-type pipe connector fixedly connected to the bottom end of the pipeline. There are two Laval pipes, with their side ports respectively connected to one end of two first pneumatic check valves. The air inlet ports of the two Laval pipes are fixedly connected to the two ports of the Y-type pipe connector via a thicker pipe. The control ports of the two first pneumatic check valves are connected to the two narrow ports of the Y-type pipe connector via a thinner pipe. The air inlet ends of the two first pneumatic check valves are fixedly connected to a cross-shaped pipe connector via a connecting pipe. The lower port of the cross-shaped pipe connector is fixedly connected to the negative pressure end of the suction cup. The upper port of the cross-shaped pipe connector is fixedly connected to a second pneumatic check valve via an upper pipe. The air inlet end of the second pneumatic check valve is connected to a throttle valve via a straight pipe. The control port of the second pneumatic check valve is connected to the straight pipe via a bent pipe. An installation port is provided on the side wall of the upper housing, and a ventilation mesh is fixedly connected to the inner wall of the installation port.

[0014] Furthermore, a centering assembly is fixedly connected to the bottom of the lower housing. The centering assembly includes a self-centering chuck fixedly connected to the bottom of the lower housing. A first industrial camera and a second industrial camera are fixedly connected to the circular groove on the outer wall of the lower housing through a shaping hose.

[0015] Furthermore, the self-centering chuck includes an upper fixed plate fixedly connected to the bottom of the lower housing by screws, a lower fixed plate fixedly connected to the bottom of the upper fixed plate by screws, a protruding ring formed at the bottom of the upper fixed plate, a centrally hollowed-out dial sleeved on the surface of the protruding ring, a jaw provided between the upper and lower fixed plates by a first fixing pin, a slot opened at the bottom of the central dial, a second fixing pin fixedly connected to the top of the jaw, the jaw connected to the slot by the second fixing pin, an arc-shaped rack connected to the surface of the central dial by screws, a protective shell connected to the top of the upper fixed plate by screws, a rotating shaft rotatably connected to the inner bottom wall of the protective shell, a gear fixedly connected to the surface of the rotating shaft, the gear meshing with the arc-shaped rack, a motor connected to the top of the upper fixed plate by screws, the output end of the motor fixedly connected to the rotating shaft, an extension rod fixedly connected to the side wall of the upper fixed plate, and a lever fixedly connected to the side wall of the central dial.

[0016] This application also discloses a method for a multifunctional blanking device for polishing curved optical elements applied to any of the above, comprising the following steps:

[0017] Step one: The first industrial camera performs image recognition to identify the specifications and relative position of the mold from all angles. The second industrial camera performs lens position recognition to make the suction cup and the lens concentric. The arc rack is driven to rotate, which in turn drives the middle dial to rotate, causing the grippers to close. At the same time, the small offset of the floating joint is used to achieve precise positioning so that the suction cup and the lens are concentric.

[0018] Step two: Move the sliding link upward so that the gas from the gas source can enter the pipeline, thereby creating a vacuum suction lens to transfer the gas while disrupting the solid-liquid interface.

[0019] Step 3: Reset the sliding linkage, cut off the air supply, and the robotic arm will move the lens to the designated position.

[0020] Step four: Move the sliding linkage downwards so that the gas from the gas source enters the suction cup at a limited flow rate, thus removing the vacuum and blowing off the adsorbed lens, while preventing the high-speed airflow from blowing off the remaining lenses on the tray.

[0021] Beneficial effects:

[0022] 1. In this invention, by setting up an annular air knife in conjunction with a suction cup, efficient and reliable lens unloading operation is achieved. By setting up a Laval tube, the vacuum adsorption effect naturally generated after blowing air is used to adsorb and grasp the lens. Furthermore, the force of blowing air can effectively break the adsorption effect between the lens and the mold. Based on this, the structural principle of the Laval tube is introduced to increase the gas flow rate and enhance the adsorption force, realizing a dual-purpose air-blowing and vacuum suction mechanism that only requires one compressed air path, thereby reducing equipment costs and improving resource utilization efficiency.

[0023] 2. In this invention, the suction cup and the annular air knife are designed as an integrated structure, which reduces the complicated connection links between components, reduces the complexity of installation, and improves the overall stability and reliability of the device during operation.

[0024] 3. In this invention, the working state switching of the normally closed three-position three-way reversing valve is realized by setting the movement of the sliding linkage, realizing the sequential control of suction, rotation, blowing and other actions. After the glass lens is picked up, only one operation is needed to shut off the main air source at the same time. In addition, after the main air source is shut off, a closed chamber is formed between the suction cup and the glass to realize the transfer of the lens. When placing the lens, the air path is also switched by one-button operation to make the air path output a small flow of blowing air to release the adsorbed lens smoothly and accurately.

[0025] 4. In this invention, the device can be integrated into a robotic arm to realize a fully automated unloading process, improve production efficiency, and is suitable for assembly line production scenarios. At the same time, it can also be operated manually. In some special cases, such as equipment debugging, small-batch customized production, or dealing with sudden failures, the manual operation mode can provide the necessary flexibility and emergency handling capabilities for production. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the upper housing of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the upper and lower shells of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0030] Figure 5 This is a cross-sectional view of the upper and lower housings of the present invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0032] Figure 7 This is a three-dimensional structural schematic diagram of the airflow control component of the present invention;

[0033] Figure 8 This is a cross-sectional view of the annular air knife of the present invention;

[0034] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C;

[0035] Figure 10 This is a three-dimensional structural diagram of the first and second industrial cameras of the present invention.

[0036] Figure 11 This is a three-dimensional structural diagram of the self-centering chuck of the present invention;

[0037] Figure 12 This is an exploded view of the self-centering chuck of the present invention;

[0038] Figure 13 This is a cross-sectional view of the central dial of the present invention.

[0039] Figure 14 This is a cross-sectional view of the protective shell of the present invention;

[0040] Figure 15 This is a schematic diagram of the orthogonal cross-section of the suction cup, annular air knife, grinding mold, and lens of the present invention;

[0041] Figure 16 This is a cross-sectional view of the pneumatically controlled one-way valve of the present invention.

[0042] Figure 17 This is a schematic diagram of the gas path principle of the present invention.

[0043] The attached figures are labeled as follows:

[0044] 1. Centering assembly; 101. Self-centering chuck; 10101. Upper fixed plate; 10102. Lower fixed plate; 10103. Protruding ring; 10104. Middle dial; 10105. First fixing pin; 10106. Gripper; 10107. Groove; 10108. Second fixing pin; 10109. Arc-shaped rack; 10110. Protective shell; 10111. Rotating shaft; 10112. Gear; 10113. Motor; 10114. Extension rod; 10115. Lever; 102. Shaping hose; 103. 1. First industrial camera; 104. Second industrial camera; 2. Base; 201. Upper housing; 202. Lower housing; 203. End cap; 204. Floating connector; 3. Annular air knife; 301. Upper plate; 302. Lower plate; 303. Air chamber; 304. Annular outlet; 305. Guide wall; 306. Baffle wall; 4. Suction cup; 5. Piping; 6. Laval tube; 7. First pneumatic check valve; 8. Airflow reversing assembly; 801. Normally closed three-position three-way reversing valve; 80101. Reversing valve body; 80202. Reversing valve core; 803 03. Reversing seal ring; 802. Quick-connect fitting; 803. Elbow; 804. Sliding connecting rod; 805. First connecting arm; 806. Limiting bracket; 807. Mounting protrusion; 808. First spring; 809. Second spring; 810. Pin; 811. Fixing bracket; 812. First electromagnetic push rod; 813. Second electromagnetic push rod; 814. Second connecting arm; 815. Manual switch button; 816. Limiting protrusion; 9. Airflow control assembly; 901. Y-type pipe fitting; 902. Thick pipe; 903. Thin pipe; 904. Connecting... 905. Connector; 906. Upper pipe; 907. Second pneumatic check valve; 908. Straight pipe; 909. Bend; 10. Robotic arm; 11. Throttling valve; 1101. Throttling outer valve body; 1102. Throttling inner valve core; 1103. Adjusting rod; 1104. Dial; 1105. Throttling sealing ring; 12. Ventilation mesh; 13. Mold; 14. Lens; 15. Check valve body; 16. Check valve upper cover; 17. Check valve lower cover; 18. Check valve core; 19. Check valve spring; 20. Check valve control piston. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-17 The present invention is further illustrated by the embodiments:

[0046] like Figure 1-17 As shown, a multi-functional unloading device for polishing curved optical elements is installed on the movable end of a robotic arm 10. It includes a base 2 with a working opening at the bottom for mounting and supporting various components. An annular air knife 3 and a suction cup 4 located in the center of the annular air knife 3 are provided inside the base 2. The suction end of the suction cup 4 extends to the working opening of the base 2. A pipe 5 is provided inside the base 2. The pipe 5 is connected to the annular air knife 3 through a Laval tube 6. A first pneumatically controlled one-way valve 7 is provided between the Laval tube 6 and the negative pressure chamber of the suction cup 4. When the pipe 5 delivers compressed gas to the Laval tube 6, the tapered structure of the Laval tube 6 accelerates the gas to form a high-pressure airflow that is ejected from the annular air knife 3. At the same time, the expanding section of the Laval tube 6 generates negative pressure through the Venturi effect. The first pneumatically controlled one-way valve 7 is opened to form a suction negative pressure on the suction cup 4.

[0047] Specifically, a dual-purpose air-blowing mechanism is adopted. By utilizing the vacuum adsorption effect naturally generated during air blowing, the lens 14 can be adsorbed and grasped. Furthermore, the force of air blowing can effectively break the adsorption effect between the lens 14 and the mold. Based on this, the structural principle of the Laval tube 6 is introduced to increase the flow rate of the compressed gas. On the one hand, this enhances the ability to break the adsorption force between the lens 14 and the mold, and on the other hand, it further enhances the adsorption force of the suction cup 4. Ultimately, the functions of air blowing and vacuum suction can be achieved with only one compressed air supply, reducing equipment costs and improving resource utilization efficiency.

[0048] The base 2 includes an upper housing 201 and a lower housing 202 fixedly connected to the bottom of the upper housing 201. An end cap 203 is fixedly connected to the top of the upper housing 201, and a floating connector 204 connected to the robotic arm 10 is fixedly connected to the top of the end cap 203. An airflow reversing component 8 is provided inside the upper housing 201 to change the direction of airflow and change the adsorption or placement working state of the suction cup 4. An airflow control component 9 is provided inside the lower housing 202 to split the airflow so that it can achieve a dual-purpose mechanism. The floating connector 204 is connected to the end cap 203 by threads. One end of the upper housing 201 is directly connected to the end cap 203 by threads, and the other end of the upper housing 201 is connected to the lower housing 202 by threads. The fixing bracket 811 is connected to the upper housing 201 by screws and fixed inside the upper housing 201. Through the integrated architecture, the suction cup 4 and the annular air knife 3 are designed as a whole, reducing the cumbersome connection links between components, reducing the complexity of installation, and improving the overall stability and reliability of the device during operation.

[0049] The airflow reversing assembly 8 includes a normally closed three-way directional valve 801 fixedly connected to the inner wall of the upper housing 201 for changing the airflow direction. One port of the normally closed three-way directional valve 801 penetrates the upper housing 201 and is connected to a quick-connect fitting 802 via a threaded connection for supplying air to the normally closed three-way directional valve 801. The bottom port of the normally closed three-way directional valve 801 is connected to the suction cup 4 for supplying air to the suction cup 4 to release adsorption. An elbow 803 is fixedly connected to the port of the reversing valve 801 away from the quick connector 802. The end of the elbow 803 away from the normally closed three-way reversing valve 801 is fixedly connected to the pipeline 5. It is used to supply air to the pipeline 5 to start the annular air knife 3 to spray air and to force a negative pressure to be formed in the suction cup 4. A drive component is fixedly connected to the inner wall of the upper housing 201 to change the working state of the normally closed three-way reversing valve 801 and to change the passage structure of the normally closed three-way reversing valve 801.

[0050] The driving component includes a sliding link 804, the surface of which has a first connecting arm 805. The first connecting arm 805 is connected to a normally closed three-position three-way directional valve 801 by screws. The sliding link 804 can move up and down to change the passage structure of the normally closed three-position three-way directional valve 801. A limit bracket 806 is fixedly connected to the inner wall of the upper housing 201. A mounting protrusion 807 is fixedly connected to the surface of the sliding link 804. A first spring 808 is fixedly connected to the bottom of the mounting protrusion 807. One end is fixedly connected to the inner bottom wall of the limiting frame 806, and the top of the mounting protrusion 807 is fixedly connected to the second spring 809. The first spring 808 and the second spring 809 are restricted to horizontal movement by the limiting frame 806. The surface of the upper housing 201 is provided with a shaft hole, and a pin 810 is fixedly fitted in the shaft hole. The pin 810 is used to restrict the up and down movement of the second spring 809. The sliding connecting rod 804 is reset by the first spring 808 and the second spring 809, so that the normally closed three-position three-way reversing valve 801 is in the closed state.

[0051] A fixing frame 811 is fixedly connected to the inner wall of the upper housing 201. A first electromagnetic push rod 812 and a second electromagnetic push rod 813 with opposing output shafts are fixedly connected to the surface of the fixing frame 811. A second connecting arm 814 is fixedly connected to the top of the sliding link 804. The second connecting arm 814 is connected to the output ends of the first electromagnetic push rod 812 and the second electromagnetic push rod 813. The first electromagnetic push rod 812 and the second electromagnetic push rod 813 drive the second connecting arm 814 to move, thereby driving the sliding link 804 to move up and down. A manual switch button 815 is fixedly connected to the outside. An clearance opening is provided on the surface of the upper housing 201, and the manual switch button 815 is located inside the clearance opening. The inner wall of the clearance opening is provided with a limiting protrusion 816. The manual switch button 815 has a certain elasticity so that it can be used to manually realize the ventilation function through the limiting protrusion 816, or to use the first electromagnetic push rod 812 and the second electromagnetic push rod 813 for ventilation. The first electromagnetic push rod 812 and the second electromagnetic push rod 813 are connected to the fixed frame 811 by screws and have no relative movement.

[0052] The normally closed three-position three-way directional control valve 801 includes a directional control valve body 80101, a directional control valve core 80202 centrally located, a directional control sealing ring 80303 located in a groove of the directional control valve core 80202, a top end of the directional control valve core 80202 connected to a sliding connecting rod 804, and moving with the movement of the sliding connecting rod 804. One side of the directional control valve body 80101 is connected to a quick-connect fitting 802, and the other side is connected to an elbow 803. A throttle valve 11 is connected to the lower side of the 1, and the throttle valve 11 is connected to the suction cup 4. When the sliding link 804 moves upward, the sliding link 804 drives the reversing valve core 80202 to move upward through the first connecting arm 805, so that the gas enters the pipeline 5 through the elbow 803. Similarly, when the sliding link 804 moves downward, the sliding link 804 drives the reversing valve core 80202 to move downward through the first connecting arm 805, so that the gas enters the suction cup 4 through the throttle valve 11 to release the suction of the suction cup 4.

[0053] The throttle valve 11 includes a throttle outer valve body 1101, a throttle inner valve core 1102 is provided at the side port of the throttle outer valve body 1101, and the opening of the throttle outer valve body 1101 is provided with threads. An adjusting rod 1103 connected to the throttle inner valve core 1102 is connected to the internal thread of the opening of the throttle outer valve body 1101. The adjusting rod 1103 rotates through the thread at the opening of the valve body of the throttle valve 11 to adjust the flow rate. A scale 1104 is connected to the throttle outer valve body 1101, and a throttle sealing ring 1105 is provided in the groove of the throttle inner valve core 1102.

[0054] The annular air knife 3 includes an upper plate 301 and a lower plate 302 connected by screws. The air inlet of the upper plate 301 is connected to the Laval tube 6. An air chamber 303 is provided at the top of the lower plate 302. The Laval tube 6 is connected to the air chamber 303. An annular outlet 304 connected to the air chamber 303 is formed between the upper plate 301 and the lower plate 302. After being accelerated by the Laval tube 6, the gas enters the air chamber 303 and is then ejected from the annular outlet 304. A guide wall 305 is formed on the inner annular surface of the lower plate 302. A blocking wall 306 protruding from the guide wall 305 is formed at the bottom of the upper plate 301. The guide wall 305 and the blocking wall 306 cooperate to blow the airflow toward the gap between the lens 14 and the mold, thereby destroying the adsorption capacity between the two.

[0055] The airflow control assembly 9 includes a Y-type connector 901 fixedly connected to the bottom end of the pipeline 5. There are two Laval tubes 6, with their side ports connected to one end of two first pneumatic check valves 7 respectively. The inlet ports of the two Laval tubes 6 are fixedly connected to the two ports of the Y-type connector 901 via a thicker pipe 902. Gas entering from the pipeline is diverted through the Y-type connector 901, and most of the gas is introduced into the Laval tubes 6 via the thicker pipe 902, ultimately forming an air knife. A negative pressure is formed inside the Laval tube 6 near the first pneumatic check valves 7 during gas flow. The control ports of the two first pneumatic check valves 7 are connected to the two narrow ports of the Y-type connector 901 via a thinner pipe 903. A cross-shaped connector 905 is fixedly connected to the inlet ends of the two first pneumatic check valves 7 via a connecting pipe 904. The lower port of the cross tube connector 905 is fixedly connected to the negative pressure end of the suction cup 4. A small amount of gas is introduced into the first pneumatic one-way valve 7 through the thin tube 903. The first pneumatic one-way valve 7 is opened, so that the Laval tube 6 is connected to the connecting tube 904, that is, connected to the suction cup 4. The upper port of the cross tube connector 905 is fixedly connected to the second pneumatic one-way valve 907 through the upper tube 906. The air inlet of the second pneumatic one-way valve 907 is connected to the throttle valve 11 through the straight tube 908. The control port of the second pneumatic one-way valve 907 is connected to the straight tube 908 through the bent tube 909. The second pneumatic one-way valve 907 prevents outside air from entering the suction cup 4 when the suction cup 4 is adsorbing the lens 14, thereby destroying its vacuum adsorption capacity. The side wall of the upper housing 201 has an installation port, and the inner wall of the installation port is fixedly connected to the ventilation mesh 12.

[0056] Both the first pneumatic check valve 7 and the second pneumatic check valve 907 include a check valve body 15. The end of the check valve body 15 is fixedly connected to a check valve upper cover 16 and a check valve lower cover 17 by screws. A check valve core 18 is provided inside the check valve body 15. A check valve spring 19 is fixedly connected to the end of the check valve core 18. The check valve spring 19 is fixedly connected to a protrusion inside the check valve body 15. A check valve control piston 20 is provided inside the check valve body 15 on one side of the check valve upper cover 16. The movement of the check valve control piston 20 causes the check valve core 18 to move, thereby allowing the pneumatic check valve to flow or close.

[0057] A centering assembly 1 is fixedly connected to the bottom of the lower housing 202 for positioning the annular air knife 3 and the suction cup 4. The centering assembly 1 includes a self-centering chuck 101 fixedly connected to the bottom of the lower housing 202. A first industrial camera 103 and a second industrial camera 104 are fixedly connected to the circular groove on the outer wall of the lower housing 202 via a shaping hose 102. The first industrial camera 103 identifies the specifications and relative position of the mold 13 from all angles through image recognition, providing accurate positioning basis for subsequent gripping and blowing operations. The second industrial camera 104 identifies the position of the lens 14 to make the suction cup 4 as concentric as possible with the lens 14. The lens positions of the first industrial camera 103 and the second industrial camera 104 can be changed by swinging the shaping hose 102. The self-centering chuck 101 is connected to the lower housing 202 by screws and is set concentrically with the lower housing 202.

[0058] The self-centering chuck 101 includes an upper fixed plate 10101 fixedly connected to the bottom of the lower housing 202 by screws. A lower fixed plate 10102 is fixedly connected to the bottom of the upper fixed plate 10101 by screws. The upper fixed plate 10101 and the lower fixed plate 10102 are concentric and do not rotate relative to each other. A protruding ring 10103 is formed at the bottom of the upper fixed plate 10101. A centrally located, hollowed-out intermediate dial 10104 is fitted onto the surface of the protruding ring 10103. The intermediate dial 10104 is located between the upper fixed plate 10101 and the lower fixed plate 10102 and can rotate relative to each other. A gripper 10106 is provided between the lower fixed plate 10101 and the lower fixed plate 10102 via a first fixing pin 10105. Preferably, there are three grippers 10106 to facilitate three-point clamping and alignment. The grippers 10106 can rotate around the first fixing pin 10105. A slot 10107 is provided at the bottom of the intermediate dial 10104. A second fixing pin 10108 is fixedly connected to the top of the grippers 10106. The grippers 10106 are connected to the slot 10107 via the second fixing pin 10108. The grippers 10106 and the second fixing pin 10108 can be positioned within the slot 10107. 0107 slides, and with the relative rotation of the dial, the gripper 10106 moves relative to the slot 10107. Simultaneously, the gripper 10106 rotates relative to the first fixing pin 10105, thus achieving gripping and releasing. An arc-shaped rack 10109 is screwed to the surface of the middle dial 10104. A protective shell 10110 is screwed to the top of the upper fixing plate 10101. A rotating shaft 10111 is rotatably connected to the inner bottom wall of the protective shell 10110. A gear 10112 is fixedly connected to the surface of the rotating shaft 10111. Engaging with the arc-shaped rack 10109, it can rotate relative to the gear. The top of the upper fixed plate 10101 is connected to the motor 10113 by screws, without relative movement. The output end of the motor 10113 is fixedly connected to the rotating shaft 10111. The operation of the motor 10113 drives the gear 10112, which transmits the motion to the arc-shaped rack 10109, thereby driving the middle dial 10104 to rotate, causing the gripper 10106 to grasp and release. An extension rod 10114 is fixedly connected to the side wall of the upper fixed plate 10101, and a lever 10115 is fixedly connected to the side wall of the middle dial 10104.

[0059] This application also discloses a method for a multifunctional blanking device for polishing curved optical elements applied to any of the above, comprising the following steps:

[0060] Step 1, Alignment: Using the first industrial camera 103 for image recognition, the specifications and relative position of the mold 13 are comprehensively identified, providing accurate positioning data for subsequent gripping and blowing operations. After the robotic arm 10 reaches a certain position, it is determined whether the lens 14 is within the centering chuck contour. If so, the robotic arm 10 descends and contacts the lens 14; otherwise, the robotic arm 10 rises and re-identifies and positions the lens. The second industrial camera 104 identifies the position of the lens 14, ensuring the suction cup 4 is concentric with the lens 14. This drives the arc-shaped rack 10109 to rotate, causing the intermediate dial 10104 to rotate. The slot 10107 of the intermediate dial 10104 causes the gripper 10106 and the second fixing pin 10108 to rotate around the first fixing pin 10105 and converge. Simultaneously, the small offset of the floating joint 204 achieves precise positioning, ensuring the suction cup 4 is concentric with the lens 14. During this process, the motor 10113 can drive the arc rack 10109. When switching to manual operation, after manually confirming the approximate position of the lens 14, one hand controls the entire device and the manual switch button 815 to perform the ventilation operation. Then, the suction cup 4 is slowly placed on the lens 14. At this time, the other hand squeezes and releases the extension rod 10114 and the lever 10115 to achieve accurate centering.

[0061] Step two, the grasping stage: The sliding link 804 moves upward, causing the normally closed three-position three-way directional valve 801 to move upward, allowing gas from the gas source to enter pipe 5. This disrupts the solid-liquid interface and creates a vacuum to extract the lens 14 for transfer. Upon receiving signals, the first electromagnetic push rod 812 and the second electromagnetic push rod 813 push the sliding link 804 upward. Gas from the gas source enters the Y-type pipe joint 901 through the elbow 803 and pipe 5, and is divided into two parts. Most of the gas enters the two Laval pipes 6, where it is accelerated and blown into the air chamber 303 of the annular air knife 3. Finally, it is blown out through the annular outlet 304, effectively disrupting the solid-liquid interface between the lens 14 and the mold, facilitating the subsequent extraction of the lens 14. Simultaneously, a small amount of gas enters the control port of the first pneumatic check valve 7, pushing the check valve control piston 20. As the corresponding check valve control piston 20 moves, the check valve core 18 of the first pneumatic check valve 7 moves, opening the valve. Because high-speed gas flows through the Laval tube 6, a negative pressure is created in the side pipe, generating a vacuum adsorption effect. At this time, the first pneumatically controlled one-way valve 7 opens, thereby extracting the gas from the connecting pipe 904, cross-shaped connector 905, and suction cup 4 connected to the first pneumatically controlled one-way valve 7. This creates a vacuum in the suction cup 4, achieving the purpose of adsorbing the lens 14. Through a unique dual-purpose gas mechanism, the solid-liquid interface is disrupted while a vacuum is created to adsorb the lens 14 for transfer. When the switching operator manually operates the above process, they only need to manually push up and down the manual switch button 815H5 connected to the sliding linkage 804 to achieve the same action as the first electromagnetic push rod 812 and the second electromagnetic push rod 813, realizing the gas path switching.

[0062] Step 3, Transfer Process: The sliding link 804 is reset, the air supply is cut off, and the lens 14 is transferred to the designated position with the robotic arm 10. After the blowing action is completed, the lens 14 has completely detached from the mold as the robotic arm is lifted. At this time, the first electromagnetic push rod 812 and the second electromagnetic push rod 813 are reset, driving the sliding link 804 to move and reset, thereby causing the reversing valve core 80202 to return to the normally closed position, and the air supply no longer enters. The lens 14 is transferred with the robotic arm 10. During this process, since the air no longer enters, no air enters the control port of the first pneumatic check valve 7. The check valve core 18 of the first pneumatic check valve 7 is pushed by the corresponding check valve spring 19 to reset the check valve control piston 20, the first pneumatic check valve 7 is closed, and the connecting pipe 904, cross tube, and suction cup 4 are still in a vacuum, adsorbing the lens 14. The robotic arm 10 transfers the lens 14 to the designated position. During Steps 2 and 3, the second pneumatic check valve 907 remains closed.

[0063] Step 4, Placement: The sliding rod 804 moves downwards, causing the normally closed three-position three-way directional valve 801 to move downwards, allowing the gas from the gas source to enter the suction cup 4 at a limited flow rate, thus removing the vacuum and blowing off the adsorbed lens 14. This also prevents the high-speed airflow from blowing off the remaining lenses 14 on the tray. The lens 14 is then transferred to the designated position. During placement, the gas path is switched using a one-button operation. The first electromagnetic push rod 812 and the second electromagnetic push rod 813 push the sliding rod 804 downwards, causing the directional valve core 80202 to move downwards. This allows the gas from the gas source to flow through the normally closed three-position three-way directional valve 801 into the throttle valve 11. The flow rate is controlled by turning the throttle valve core 1102 in the throttle valve 11. The gas then enters the straight pipe 908 and the bend pipe 909. Because the bend pipe 909 and the straight pipe 908... The control ports of the two pneumatically controlled one-way valves 907 are connected, causing the one-way valve control piston 20 of the second pneumatically controlled one-way valve 907 to move, pushing the corresponding one-way valve core 18 to move. The second pneumatically controlled one-way valve 907 opens, and the gas in the straight pipe 908 enters the upper pipe 906 through the second pneumatically controlled one-way valve 907. Since the first pneumatically controlled one-way valve 7 is closed, a small flow of gas enters the suction cup 4, making it no longer a vacuum, and blowing the adsorbed lens 14 down smoothly and accurately. The entire operation process is simple and efficient, greatly improving production efficiency. In the above process, when the switching operator operates manually, they only need to manually push down the manual switch button 815 connected to the sliding linkage 804 to achieve the same action as the first electromagnetic push rod 812 and the second electromagnetic push rod 813, realizing the conversion of the air path, thereby completing the gripping, transfer, and placement.

[0064] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of the present invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A multifunctional unloading device for polishing curved optical elements, installed on the movable end of a robotic arm (10), comprising a base (2) with a working opening at the bottom, wherein an annular air knife (3) and a suction cup (4) located in the center of the annular air knife (3) are disposed inside the base (2), and the suction end of the suction cup (4) extends to the working opening of the base (2), characterized in that, The substrate (2) is provided with a pipeline (5), which is connected to the annular air knife (3) through a Laval tube (6). A first pneumatic one-way valve (7) is provided between the Laval tube (6) and the negative pressure chamber of the suction cup (4). When the pipeline (5) delivers compressed gas to the Laval tube (6), the tapering structure of the Laval tube (6) accelerates the gas to form a high-pressure airflow that is ejected from the annular air knife (3). At the same time, the expanding section of the Laval tube (6) generates negative pressure through the Venturi effect. The first pneumatic one-way valve (7) is opened to make the suction cup (4) form an adsorption negative pressure. The base (2) includes an upper shell (201) and a lower shell (202) fixedly connected to the bottom of the upper shell (201). An end cap (203) is fixedly connected to the top of the upper shell (201), and a floating joint (204) connected to the robotic arm (10) is fixedly connected to the top of the end cap (203). An airflow reversing assembly (8) is provided inside the upper shell (201), and an airflow control assembly (9) is provided inside the lower shell (202). The annular air knife (3) includes an upper plate (301) and a lower plate (302) connected by screws. The air inlet of the upper plate (301) is connected to the Laval pipe (6). An air chamber (303) is provided at the top of the lower plate (302). The Laval pipe (6) is connected to the air chamber (303). An annular outlet (304) connected to the air chamber (303) is formed between the upper plate (301) and the lower plate (302). A guide wall (305) is formed on the inner annular surface of the lower plate (302). A blocking wall (306) protruding from the guide wall (305) is formed at the bottom of the upper plate (301). The airflow control assembly (9) includes a Y-type pipe joint (901) fixedly connected to the bottom end of the pipeline (5). There are two Laval pipes (6). The side ports of the two Laval pipes (6) are respectively connected to one end of two first pneumatic check valves (7). The air inlet ports of the two Laval pipes (6) are fixedly connected to the two ports of the Y-type pipe joint (901) through a thick pipe (902). The control ports of the two first pneumatic check valves (7) are connected to the two narrow ports of the Y-type pipe joint (901) through a thin pipe (903). The air inlet ends of the two first pneumatic check valves (7) are connected through a connecting pipe (904). A cross-shaped tube connector (905) is fixedly connected. The lower port of the cross-shaped tube connector (905) is fixedly connected to the negative pressure end of the suction cup (4). The upper port of the cross-shaped tube connector (905) is fixedly connected to a second pneumatic check valve (907) through an upper tube (906). The air inlet of the second pneumatic check valve (907) is fixedly connected to a throttle valve (11) through a straight tube (908). The control port of the second pneumatic check valve (907) is connected to the straight tube (908) through a bend (909). An installation port is provided on the side wall of the upper housing (201), and a ventilation mesh (12) is fixedly connected to the inner wall of the installation port.

2. The multifunctional blanking device for polishing curved optical elements as described in claim 1, characterized in that: The airflow reversing assembly (8) includes a normally closed three-way directional valve (801) fixedly connected to the inner wall of the upper housing (201). One port of the normally closed three-way directional valve (801) passes through the upper housing (201) and is connected to a quick-connect fitting (802) by a thread. The bottom port of the normally closed three-way directional valve (801) is connected to a suction cup (4). An elbow (803) is fixedly connected to the port of the normally closed three-way directional valve (801) away from the quick-connect fitting (802). The end of the elbow (803) away from the normally closed three-way directional valve (801) is fixedly connected to a pipeline (5). A drive for changing the working state of the normally closed three-way directional valve (801) is fixedly connected to the inner wall of the upper housing (201).

3. The multifunctional blanking device for polishing curved optical elements as described in claim 2, characterized in that: The driving component includes a sliding link (804), the surface of which has a first connecting arm (805), the first connecting arm (805) being connected to a normally closed three-position three-way directional valve (801) by screws, a limit bracket (806) being fixedly connected to the inner wall of the upper housing (201), a mounting protrusion (807) being fixedly connected to the surface of the sliding link (804), a first spring (808) being fixedly connected to the bottom of the mounting protrusion (807), one end of the first spring (808) being fixedly connected to the inner bottom wall of the limit bracket (806), a second spring (809) being fixedly connected to the top of the mounting protrusion (807), and a shaft hole being provided on the surface of the upper housing (201), with a pin (810) fitted and fixed inside the shaft hole.

4. The multifunctional blanking device for polishing curved optical elements as described in claim 3, characterized in that: A fixing frame (811) is fixedly connected to the inner wall of the upper housing (201). A first electromagnetic push rod (812) and a second electromagnetic push rod (813) with opposite output shafts are fixedly connected to the surface of the fixing frame (811). A second connecting arm (814) is fixedly connected to the top of the sliding link (804). The second connecting arm (814) is connected to the output ends of the first electromagnetic push rod (812) and the second electromagnetic push rod (813). A manual switch button (815) is fixedly connected to the outer side of the sliding link (804). An clearance opening is provided on the surface of the upper housing (201), and the manual switch button (815) is located in the clearance opening. A limit protrusion (816) is provided on the inner wall of the clearance opening.

5. The multifunctional blanking device for polishing curved optical elements as described in claim 4, characterized in that: A centering assembly (1) is fixedly connected to the bottom of the lower housing (202). The centering assembly (1) includes a self-centering chuck (101) fixedly connected to the bottom of the lower housing (202). A first industrial camera (103) and a second industrial camera (104) are fixedly connected to the circular groove on the outer wall of the lower housing (202) through a shaping hose (102).

6. The multifunctional blanking device for polishing curved optical elements as described in claim 5, characterized in that: The self-centering chuck (101) includes an upper fixed plate (10101) fixedly connected to the bottom of the lower housing (202) by screws. The bottom of the upper fixed plate (10101) is fixedly connected to the lower fixed plate (10102) by screws. A protruding ring (10103) is formed at the bottom of the upper fixed plate (10101). A centrally located, hollowed-out, intermediate dial (10104) is fitted onto the surface of the protruding ring (10103). A gripper (10106) is provided between the upper fixed plate (10101) and the lower fixed plate (10102) through a first fixing pin (10105). A slot (10107) is provided at the bottom of the intermediate dial (10104). A second fixing pin (10108) is fixedly connected to the top of the gripper (10106). The gripper (10106) is connected to the slot through the second fixing pin (10108). The middle dial (10104) is connected to the mouth (10107). The surface of the middle dial (10104) is connected to an arc-shaped rack (10109) by screws. The top of the upper fixed plate (10101) is connected to a protective shell (10110) by screws. The inner bottom wall of the protective shell (10110) is rotatably connected to a rotating shaft (10111). The surface of the rotating shaft (10111) is fixedly connected to a gear (10112). The gear (10112) meshes with the arc-shaped rack (10109). The top of the upper fixed plate (10101) is connected to a motor (10113) by screws. The output end of the motor (10113) is fixedly connected to the rotating shaft (10111). The side wall of the upper fixed plate (10101) is fixedly connected to an extension rod (10114). The side wall of the middle dial (10104) is fixedly connected to a lever (10115).

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