Multifunctional blanking method and device for polishing of curved-surface optical element

Abstract

The invention relates to a multifunctional blanking device for polishing curved-surface optical elements, which is mounted at a movable end of a mechanical arm and comprises a base body with an operation opening in the bottom and used for mounting and supporting all parts, an annular air knife and a suction cup positioned in the center of the annular air knife are arranged in the base body, and an adsorption end of the suction cup extends to the operation opening of the base body. A pipeline is arranged in the base body and communicated with the annular air knife through a Laval pipe, a first pneumatic control one-way valve is arranged between the Laval pipe and a negative pressure cavity of the suction cup, and when the pipeline conveys compressed gas to the Laval pipe, the gas is accelerated through a gradually-shrinking structure of the Laval pipe to form high-pressure gas flow to be sprayed out of the annular air knife. Meanwhile, the divergent section of the Laval pipe generates negative pressure through the Venturi effect, and the first pneumatic control one-way valve is switched on to enable the suction cup to form suction negative pressure. According to the invention, the one-air dual-purpose mechanism of blowing and vacuum suction functions can be realized only by one path of compressed air, and the resource utilization efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical element processing, and in particular to a multifunctional blanking method and device for polishing curved optical elements. Background Art

[0002] In optical component manufacturing, the finishing and polishing of curved optical components, such as various lenses, plays a decisive role in the final performance and quality of the product. However, after the lens is polished, the process of transferring it from the mold to the glass lens is complicated by the presence of liquid between the glass lens and the mold. This, combined with various physical factors, creates a solid-liquid-solid adsorption interface effect, making the lens transfer process difficult.

[0003] Several existing approaches have been proposed to disrupt the internal solid-liquid interface to facilitate smooth workpiece transfer. For example, side-slipping is used to reduce contact area and adhesion, but this approach can cause scratches, breakage, and other damage to the lens due to improper operation. Using a clamp to directly load and remove the lens along its normal direction can cause damage to the lens, processing equipment, or even personnel injury due to overloading. Compressed gas is used to disrupt the solid-liquid interface, but this method alone can cause the lens to be blown off. Using temperature changes to reduce the water's tension coefficient is difficult to precisely control in practice, has limited effectiveness, is time-consuming, and is impractical. Ultrasonic vibration, while capable of disrupting adhesion to a certain extent, places high demands on the equipment and can introduce additional interference. Using a vacuum chuck to directly transfer material along the lens' normal direction offers certain advantages in reducing scratches and damage caused by clamping. However, given the strong and complex adhesion between the lens and the mold, relying solely on a vacuum chuck cannot achieve efficient and reliable material removal.

[0004] In order to solve the above problems, the present invention proposes a multifunctional blanking method and device for polishing curved optical elements. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, meet practical needs, and provide a multifunctional blanking method and device for polishing curved optical elements to solve the above-mentioned technical problems.

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0007] A multifunctional blanking device for polishing curved optical elements is installed at the movable end of a robotic arm, comprising a base with an operating opening at the bottom, an annular air knife and a suction cup located in the center of the annular air knife provided inside the base, the adsorption end of the suction cup extending to the operating opening of the base, a pipeline provided inside the base, the pipeline being connected to the annular air knife through a Laval tube, a first air-controlled one-way valve provided between the Laval tube and the negative pressure chamber of the suction cup, when the pipeline transports compressed gas to the Laval tube, the tapered structure of the Laval tube accelerates the gas to form a high-pressure airflow ejected from the annular air knife, and at the same time, the gradually expanding section of the Laval tube generates negative pressure through the Venturi effect, and the first air-controlled one-way valve is turned on to form an adsorption negative pressure on the suction cup.

[0008] Furthermore, the base includes an upper shell and a lower shell fixedly connected to the bottom of the upper shell, the top of the upper shell is fixedly connected to an end cover, the top of the end cover is fixedly connected to a floating joint connected to the robotic arm, the interior of the upper shell is provided with an airflow reversing component, and the interior of the lower shell is provided with an airflow control component.

[0009] Furthermore, the airflow reversing assembly includes a normally closed three-position three-way reversing valve fixedly connected to the inner wall of the upper shell, one port of the normally closed three-position three-way reversing valve passes through the upper shell and is connected to a quick-plug connector through a thread, the port at the bottom of the normally closed three-position three-way reversing valve is connected to the suction cup, the port of the normally closed three-position three-way reversing valve away from the quick-plug connector is fixedly connected to an elbow, the end of the elbow away from the normally closed three-position three-way reversing valve is fixedly connected to the pipeline, and the inner wall of the upper shell is fixedly connected to a driving component for changing the working state of the normally closed three-position three-way reversing valve.

[0010] Furthermore, the driving member includes a sliding connecting rod, the surface of the sliding connecting rod has a first connecting arm, the first connecting arm is connected to the normally closed three-position three-way reversing valve by a screw, the inner wall of the upper shell is fixedly connected to the limit frame, the surface of the sliding connecting rod is fixedly connected to the mounting protrusion, the bottom of the mounting protrusion is fixedly connected to the first spring, one end of the first spring is fixedly connected to the inner bottom wall of the limit frame, the top of the mounting protrusion is fixedly connected to the second spring, and the surface of the upper shell is provided with an axial hole, and a pin is fixed in the axial hole.

[0011] Furthermore, a fixing bracket is fixedly connected to the inner wall of the upper shell, and a first electromagnetic push rod and a second electromagnetic push rod relative to the output shaft are fixedly connected to the surface of the fixing bracket respectively, a second connecting arm is fixedly connected to the top of the sliding connecting rod, and the second connecting arm is connected to the output ends of the first electromagnetic push rod and the second electromagnetic push rod, and a manual switch button is fixedly connected to the outer side of the sliding connecting rod, an avoidance opening is opened on the surface of the upper shell, and the manual switch button is arranged in the avoidance opening, and a limiting protrusion is provided on the inner wall of the avoidance 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 the Laval tube, an air cavity is provided on the top of the lower plate, the Laval tube is connected to the air cavity, an air outlet annular port connected to the air cavity is formed between the upper plate and the lower plate, a guide wall is formed on the inner annular surface of the lower plate, and a blocking wall protruding from the guide wall is formed at the bottom of the upper plate.

[0013] Furthermore, the airflow control component includes a Y-shaped pipe joint fixedly connected to the bottom end of the pipeline, the number of the Laval tubes is two, the side ports of the two Laval tubes are respectively connected to one end of the two first air-controlled one-way valves, the air inlet ports of the two Laval tubes are fixedly connected to the two ports of the Y-shaped pipe joint through a thick tube, the control ports of the two first air-controlled one-way valves are connected to the two thin ports of the Y-shaped pipe joint through a thin tube, the air inlet ends of the two first air-controlled one-way valves are fixedly connected to a cross pipe joint through a connecting pipe, the lower side port of the cross pipe joint is fixedly connected to the negative pressure end of the suction cup, the upper side port of the cross pipe joint is fixedly connected to the second air-controlled one-way valve through the upper side pipe, the air inlet end of the second air-controlled one-way valve is connected to the throttle valve through a straight pipe, the control port of the second air-controlled one-way valve is connected to the straight pipe through a bent pipe, and the side wall of the upper shell is provided with a mounting port, and the inner wall of the mounting port is fixedly connected to a ventilation net.

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

[0015] The top of the fixing plate is fixedly connected to the bottom surface of the fixing plate by screws, and the bottom surface of the fixing plate is fixedly connected to the fixing plate by screws. The bottom surface of the fixing plate is formed with a protruding ring, and the surface of the protruding ring is sleeved with an intermediate dial with a hollow middle portion. A clamping claw is provided between the upper fixing plate and the lower fixing plate through a notch. The bottom of the intermediate dial is provided with a notch. The top of the clamping claw is fixedly connected to the second fixing pin, and the clamping claw is connected to the notch by the second fixing pin. The surface of the intermediate dial is connected to an arc rack by screws. The top of the upper fixing plate is connected to a protective shell by screws. The inner bottom wall of the protective shell is rotatably connected to the rotating shaft. The surface of the rotating shaft is fixedly connected to a gear, and the gear is meshed with the arc rack. The top of the upper fixing plate is connected to a motor by screws. The output end of the motor is fixedly connected to the rotating shaft. The side wall of the upper fixing plate is fixedly connected to an extension rod, and the side wall of the intermediate dial is fixedly connected to a detent rod.

[0016] The present application also discloses a method for polishing a curved optical element using a multifunctional blanking device for any of the above methods, comprising the following steps:

[0017] In step one, the first industrial camera performs image recognition to comprehensively identify the specifications and relative position of the mold. The second industrial camera performs lens position recognition to make the suction cup concentric with the lens, drive the arc-shaped rack to rotate, and drive the middle dial to rotate to bring the clamping jaws together. At the same time, precise positioning is achieved by relying on the small offset of the floating joint to make the suction cup concentric with the lens.

[0018] Step 2: Move the sliding connecting rod upward so that the gas from the gas source can enter the pipeline, destroying the solid-liquid interface and forming a vacuum to suck the lens for transfer.

[0019] Step three: reset the sliding link, cut off the gas source, and transfer the lens to the designated position by the robotic arm.

[0020] Step 4: Move the sliding link downward so that the gas from the gas source enters the suction cup at a limited flow rate, breaking the vacuum and blowing the adsorbed lens off while preventing the high-speed airflow from blowing off the remaining lenses on the tray.

[0021] Beneficial effects:

[0022] 1. In the present invention, an annular air knife is provided in conjunction with a suction cup to achieve efficient and reliable lens unloading operations. By providing a Laval tube, the vacuum adsorption effect naturally generated after blowing is utilized to achieve adsorption and grasping of the lens. The adsorption effect between the lens and the mold can also be effectively destroyed by the force of blowing. On this basis, the structural principle of the Laval tube is introduced to increase the gas flow rate and enhance the adsorption force, thereby realizing a dual-purpose mechanism of blowing and vacuum absorption with only one compressed air path, thereby reducing equipment costs and improving resource utilization efficiency.

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

[0024] 3. In the present invention, by setting the movement of the sliding connecting rod, the working state switching of the normally closed three-position three-way reversing valve is realized, and the sequential control of the suction, rotation, and blowing actions is realized. After the glass lens is sucked up, only one operation is required to simultaneously shut off the total air source. In addition, after shutting off the total air source, 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 through a one-button operation, so that the air path outputs a small flow of air to release the adsorbed lens smoothly and accurately.

[0025] 4. In the present 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, manual operation can also be performed. In some special cases, such as equipment debugging, small-batch customized production, or responding to sudden failures, the manual operation mode can provide the necessary flexibility and emergency handling capabilities for production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic cross-sectional structural diagram of the upper housing of the present invention;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the front cross-section structure of the upper shell and the lower shell of the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 5 Schematic diagram of the cross-sectional structure of the upper shell and the lower shell of the present invention;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0032] Figure 7 Schematic diagram of the three-dimensional structure of the airflow control assembly of the present invention;

[0033] Figure 8 Schematic diagram of the cross-sectional structure of the annular air knife of the present invention;

[0034] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0035] Figure 10 Schematic diagram of the three-dimensional structure of the first industrial camera and the second industrial camera of the present invention;

[0036] Figure 11 Schematic diagram of the three-dimensional structure of the self-centering chuck of the present invention;

[0037] Figure 12 Schematic diagram of the exploded structure of the self-centering chuck of the present invention;

[0038] Figure 13 is a schematic cross-sectional structural diagram of the intermediate dial of the present invention;

[0039] Figure 14 Schematic diagram of the cross-sectional structure of the protective shell of the present invention;

[0040] Figure 15 It is a schematic diagram of the front cross-section structure of the suction cup, annular air knife, grinding tool and lens of the present invention;

[0041] Figure 16 Schematic diagram of the cross-sectional structure of the air-controlled one-way valve of the present invention;

[0042] Figure 17 Schematic diagram of the gas circuit principle of the present invention.

[0043] The reference numerals are as follows:

[0044] 1. Centering assembly; 101. Self-centering chuck; 10101. Upper fixed plate; 10102. Lower fixed plate; 10103. Protruding ring; 10104. Intermediate dial; 10105. First fixing pin; 10106. Clamping jaw; 10107. Notch; 10108. Second fixing pin; 10109. Arc rack; 10110. Protective shell; 10111. Rotating shaft; 10112. Gear; 10113. Motor; 10114. Extension rod; 10115. Dial; 102. Molded hose; 103. First industrial camera; 104, second industrial camera; 2. Base; 201, upper housing; 202, lower housing; 203, end cap; 204, floating joint; 3. Annular air knife; 301, upper plate; 302, lower plate; 303, air cavity; 304, annular outlet; 305, flow guide wall; 306, barrier wall; 4. Suction cup; 5. Pipeline; 6. Laval tube; 7. First pneumatically controlled one-way valve; 8. Airflow reversing assembly; 801, normally closed, three-position, three-way directional valve; 80101, reversing valve body; 80202, reversing valve core; 803 03, reversing seal ring; 802, quick-connect connector; 803, elbow; 804, sliding link; 805, first connecting arm; 806, limit bracket; 807, mounting protrusion; 808, first spring; 809, second spring; 810, latch; 811, fixing bracket; 812, first electromagnetic push rod; 813, second electromagnetic push rod; 814, second connecting arm; 815, manual switch button; 816, limit protrusion; 9, airflow control assembly; 901, Y-type pipe joint; 902, thick pipe; 903, thin pipe; 904, connecting rod Taking over; 905, cross pipe joint; 906, upper side pipe; 907, second pneumatic one-way valve; 908, straight pipe; 909, elbow; 10, robotic arm; 11, throttle valve; 1101, throttle outer valve body; 1102, throttle inner valve core; 1103, adjusting rod; 1104, dial; 1105, throttle sealing ring; 12, ventilation net; 13, grinding tool; 14, lens; 15, one-way valve body; 16, one-way valve upper cover; 17, one-way valve lower cover; 18, one-way valve core; 19, one-way valve spring; 20, one-way valve control piston. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-17 The present invention is further described with examples:

[0046] like Figure 1-17 As shown, a multifunctional blanking device for polishing curved optical elements is installed at the movable end of a robotic arm 10, including a base 2 with an operating opening at the bottom, which is used to support the installation of 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, and the adsorption end of the suction cup 4 extends to the operating opening of the base 2. A pipeline 5 is provided in the base 2, and the pipeline 5 is connected to the annular air knife 3 through a Laval tube 6. A first air-controlled one-way valve 7 is provided between the Laval tube 6 and the negative pressure cavity of the suction cup 4. When the pipeline 5 transports 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 gradually expanding section of the Laval tube 6 generates negative pressure through the Venturi effect, and the first air-controlled one-way valve 7 is turned on to form an adsorption negative pressure on the suction cup 4.

[0047] Specifically, a dual-purpose mechanism is adopted, which utilizes the vacuum adsorption effect naturally generated during blowing to achieve the adsorption and grasping of the lens 14. The adsorption effect between the lens 14 and the mold can also be effectively destroyed by the force of blowing. On this basis, the structural principle of the Laval tube 6 is introduced to increase the flow rate of compressed gas. On the one hand, its ability to destroy the adsorption force between the lens 14 and the mold is improved, and on the other hand, the adsorption force of the suction cup 4 is further enhanced. Ultimately, only one compressed air is required to achieve functions such as blowing and vacuum absorption, which reduces equipment costs and improves resource utilization efficiency.

[0048] The base 2 comprises 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. 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 located within the upper shell 201 to change the direction of the airflow and adjust the suction cup 4's suction or placement state. An airflow control assembly 9 is located within the lower shell 202 to divert the airflow, thereby achieving a dual-purpose mechanism. The floating joint 204 is threadedly connected to the end cap 203. One end of the upper shell 201 is directly connected to the end cap 203 via threads, while the other end of the upper shell 201 is threadedly connected to the lower shell 202. A fixing bracket 811 is screwed to the upper shell 201 and fixed within the upper shell 201. The integrated structure, which integrates the suction cup 4 and the annular air knife 3, reduces the complex connection links between components, reduces installation complexity, and improves the overall stability and reliability of the device during operation.

[0049] The airflow reversing assembly 8 includes a normally closed three-position three-way reversing valve 801 fixedly connected to the inner wall of the upper shell 201, which is used to change the direction of the airflow. One port of the normally closed three-position three-way reversing valve 801 passes through the upper shell 201 and is connected to a quick-connect connector 802 by threading, which is used to ventilate the normally closed three-position three-way reversing valve 801. The port at the bottom of the normally closed three-position three-way reversing valve 801 is connected to the suction cup 4, which is used to supply air to the suction cup 4 to release adsorption. The port of the reversing valve 801 away from the quick-plug connector 802 is fixedly connected to an elbow 803, and one end of the elbow 803 away from the normally closed three-position three-way reversing valve 801 is fixedly connected to the pipeline 5, which is used to supply air to the pipeline 5 to start the annular air knife 3 to spray and force negative pressure to form in the suction cup 4. The inner wall of the upper shell 201 is fixedly connected to a driving component for changing the working state of the normally closed three-position three-way reversing valve 801, which is used to change the passage structure of the normally closed three-position three-way reversing valve 801.

[0050] The driving member includes a sliding link 804, the surface of the sliding link 804 has a first connecting arm 805, the first connecting arm 805 is connected to the normally closed three-position three-way reversing valve 801 by a screw, the sliding link 804 can move up and down, and is used to change the passage structure of the normally closed three-position three-way reversing valve 801, the inner wall of the upper shell 201 is fixedly connected to the limiting frame 806, the surface of the sliding link 804 is fixedly connected to the mounting protrusion 807, the bottom of the mounting protrusion 807 is fixedly connected to the first spring 808, the first spring 808 One end is fixedly connected to the inner bottom wall of the limit 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 limit horizontal movement through the limit frame 806. An axial hole is provided on the surface of the upper shell 201, and a latch 810 is fixed in the axial hole. The latch 810 is used to limit 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 a closed state.

[0051] The inner wall of the upper shell 201 is fixedly connected to a fixing frame 811, and the surface of the fixing frame 811 is fixedly connected to the first electromagnetic push rod 812 and the second electromagnetic push rod 813 with respect to the output shaft. The top of the sliding link 804 is fixedly connected to the second connecting arm 814, and 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, and an avoidance opening is opened on the surface of the upper shell 201, and the manual switch button 815 is arranged in the avoidance opening, and a limiting protrusion 816 is provided on the inner wall of the avoidance opening. The manual switch button 815 has a certain elasticity, so that the ventilation function can be manually realized through the limiting protrusion 816, and the first electromagnetic push rod 812 and the second electromagnetic push rod 813 can also be used for ventilation. The first electromagnetic push rod 812 and the second electromagnetic push rod 813 are connected to the fixing frame 811 by screws and there is no relative movement.

[0052] The normally closed three-position three-way reversing valve 801 includes a reversing valve body 80101, a reversing valve core 80202 is provided in the center of the reversing valve body 80101, a reversing sealing ring 80303 is provided in the groove of the reversing valve core 80202, the top end of the reversing valve core 80202 is connected to the sliding connecting rod 804, and moves with the movement of the sliding connecting rod 804. One side of the reversing valve body 80101 is connected to the quick-connect connector 802, and the other side of the reversing valve body 80101 is connected to the elbow 803. The lower side of 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 upward through the first connecting arm 805, allowing the gas to enter 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 downward through the first connecting arm 805, allowing the gas to enter 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 a thread is provided at the opening of the throttle outer valve body 1101. The inner thread of the opening of the throttle outer valve body 1101 is connected to an adjusting rod 1103 connected to the throttle inner valve core 1102. The adjusting rod 1103 is rotated through the thread at the opening of the valve body of the throttle valve 11 to adjust the flow rate. The throttle outer valve body 1101 is connected to a dial 1104, and a throttle sealing ring 1105 is provided at 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 cavity 303 is provided on the top of the lower plate 302. The Laval tube 6 is connected to the air cavity 303. An air outlet annular port 304 connected to the air cavity 303 is formed between the upper plate 301 and the lower plate 302. The gas enters the air cavity 303 after being accelerated by the Laval tube 6 and is then ejected from the air outlet annular port 304. A guide wall 305 is formed on the inner annular surface of the lower plate 302, and 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 make the air flow blow toward the gap between the lens 14 and the mold, destroying the adsorption capacity between the two.

[0055] The airflow control assembly 9 includes a Y-shaped pipe joint 901 fixedly connected to the bottom end of the pipeline 5. There are two Laval tubes 6. The side ports of the two Laval tubes 6 are respectively connected to one end of the two first air-controlled one-way valves 7. The air inlet ports of the two Laval tubes 6 are fixedly connected to the two ports of the Y-shaped pipe joint 901 through a thick tube 902. The gas entering from the pipeline is diverted through the Y-shaped pipe joint 901, and most of the gas is introduced into the Laval tube 6 through the thick tube 902 to finally form an air knife. A negative pressure is formed on the side of the Laval tube 6 close to the first air-controlled one-way valve 7 when the gas flows. The control ports of the two first air-controlled one-way valves 7 are connected to the two narrow ports of the Y-shaped pipe joint 901 through a thin tube 903. The air inlet ends of the two first air-controlled one-way valves 7 are fixedly connected to a cross pipe joint 905 through a connecting pipe 904. The lower port of the cross pipe joint 905 is fixedly connected to the negative pressure end of the suction cup 4, and a small amount of gas is introduced into the first air-controlled one-way valve 7 through the thin tube 903. The first air-controlled one-way valve 7 is opened, so that the Laval tube 6 is connected to the connecting pipe 904, that is, it is connected to the suction cup 4. The upper port of the cross pipe joint 905 is fixedly connected to the second air-controlled one-way valve 907 through the upper tube 906. The air inlet end of the second air-controlled one-way valve 907 is connected to the throttle valve 11 through the straight pipe 908, and the control port of the second air-controlled one-way valve 907 is connected to the straight pipe 908 through the bent pipe 909. The second air-controlled one-way valve 907 prevents outside air from entering the suction cup 4 when the suction cup 4 adsorbs the lens 14, thereby destroying its vacuum adsorption capacity. A mounting port is provided on the side wall of the upper shell 201, and a ventilation net 12 is fixedly connected to the inner wall of the mounting port.

[0056] The first air-controlled one-way valve 7 and the second air-controlled one-way valve 907 both include a one-way valve body 15, the ends of the one-way valve body 15 are fixedly connected to a one-way valve upper cover 16 and a one-way valve lower cover 17 by screws, a one-way valve core 18 is arranged in the one-way valve body 15, the end of the one-way valve core 18 is fixedly connected to a one-way valve spring 19, the one-way valve spring 19 is fixedly connected to the internal protrusion of the one-way valve body 15, a one-way valve control piston 20 is arranged on one side of the one-way valve upper cover 16 in the one-way valve body 15, and the movement of the one-way valve control piston 20 causes the one-way valve core 18 to move, thereby causing the air-controlled one-way valve to circulate or close.

[0057] The bottom of the lower shell 202 is fixedly connected with a centering component 1, which is used to position the annular air knife 3 and the suction cup 4. The centering component 1 includes a self-centering chuck 101 fixedly connected to the bottom of the lower shell 202. The circular groove on the outer wall of the lower shell 202 is fixedly connected with the first industrial camera 103 and the second industrial camera 104 through the shaping hose 102. Through the image recognition of the first industrial camera 103, the specifications and relative position of the mold 13 are fully identified, providing an accurate positioning basis for subsequent grasping and blowing operations. The position of the lens 14 is identified by the second industrial camera 104, and the suction cup 4 and the lens 14 are made concentric as much as possible. The lens position 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 shell 202 by screws and is arranged concentrically with the lower shell 202.

[0058] The self-centering chuck 101 includes an upper fixed plate 10101 fixedly connected to the bottom of the lower shell 202 by screws, the bottom of the upper fixed plate 10101 is fixedly connected to the lower fixed plate 10102 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 on the bottom of the upper fixed plate 10101, and the surface of the protruding ring 10103 is provided with an intermediate dial 10104 with a hollow middle portion, and 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 clamping jaw 10106 is provided between the disk 10101 and the lower fixed disk 10102 via a first fixing pin 10105. The number of the clamping jaws 10106 is preferably three, so as to clamp and align the center at three points. The clamping jaw 10106 can rotate around the first fixing pin 10105. A notch 10107 is provided at the bottom of the middle dial 10104. A second fixing pin 10108 is fixedly connected to the top of the clamping jaw 10106. The clamping jaw 10106 is connected to the notch 10107 via the second fixing pin 10108. The clamping jaw 10106 and the second fixing pin 10108 can be in the notch 10107. 0107 slides, and with the relative rotation of the dial, the clamping jaw 10106 is driven to move relative to the slot 10107. The clamping jaw 10106 rotates relative to the first fixed pin 10105 at the same time, thereby realizing the tightening and loosening of the clamping jaw 10106. The surface of the middle dial 10104 is connected to the arc rack 10109 by screws. The top of the upper fixed plate 10101 is connected to the protective shell 10110 by screws. The inner bottom wall of the protective shell 10110 is rotatably connected to the rotating shaft 10111. The surface of the rotating shaft 10111 is fixedly connected to the gear 10112. The gear 10112 It is engaged with the arc-shaped rack 10109 and can rotate relative to it. The top of the upper fixed disk 10101 is connected to the motor 10113 by screws, and there is no 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, so that the clamping claw 10106 grabs and releases. The side wall of the upper fixed disk 10101 is fixedly connected to the extension rod 10114, and the side wall of the middle dial 10104 is fixedly connected to the dial rod 10115.

[0059] The present application also discloses a method for polishing a curved optical element using a multifunctional blanking device for any of the above methods, comprising the following steps:

[0060] Step 1, centering link: Through the image recognition of the first industrial camera 103, the specifications and relative position of the mold 13 are fully identified, providing an accurate positioning basis for the subsequent grasping and blowing operations. After the robot arm 10 reaches a certain position, it is determined whether the lens 14 is located within the centering chuck contour? If so, the robot arm 10 is driven down and contacts the lens 14. If not, the robot arm 10 is lifted and re-identified and positioned. The position of the lens 14 is identified by the second industrial camera 104, so that the suction cup 4 is concentric with the lens 14, and the arc-shaped rack 10109 is driven to rotate, which drives the middle dial 10104 to rotate. The notch 10107 of the middle dial 10104 causes the clamping claw 10106 and the second fixed pin 10108 to rotate and converge around the first fixed pin 10105. At the same time, the small offset of the floating joint 204 is used to achieve precise positioning so that the suction cup 4 is concentric with the lens 14. During this process, the motor 10113 can be used to drive the arc-shaped 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 ventilation operation, and then slowly places the suction cup 4 on the lens 14. At this time, the other hand pinches and releases the extension rod 10114 and the lever 10115 to achieve accurate centering.

[0061] Step 2, Grasping: Sliding link 804 moves upward, causing the normally closed three-position, three-way reversing valve 801 to move upward, allowing gas from the air source to enter pipeline 5, disrupting the solid-liquid interface and creating a vacuum to suck in lens 14 for transfer. After receiving a signal, the first and second electromagnetic push rods 812 and 813 push sliding link 804 upward. Gas from the air source enters Y-shaped pipe joint 901 through elbow 803 and pipeline 5, where it is divided into two parts. The majority of the gas enters two Laval tubes 6. The gas entering the Laval tubes 6 is accelerated and blown into the air cavity 303 of the annular air knife 3 before being blown out through the annular outlet 304, effectively disrupting the solid-liquid interface between lens 14 and the mold, facilitating subsequent lens 14 extraction. Simultaneously, a small amount of gas enters the control port of the first pneumatically controlled one-way valve 7, pushing its one-way valve control piston 20. As the corresponding one-way valve control piston 20 moves, the one-way valve core 18 of the first pneumatically controlled one-way valve 7 moves, opening the valve. Because high-speed gas flows through the Laval tube 6, negative pressure is formed in the side pipe, producing a vacuum adsorption effect. At this time, the first gas-controlled one-way valve 7 is opened, thereby allowing the gas in the connecting pipe 904, cross pipe joint 905, and suction cup 4 connected to the first gas-controlled one-way valve 7 to be extracted, so that the suction cup 4 forms a vacuum to achieve the purpose of sucking the lens 14. Through a unique dual-purpose mechanism, it achieves the purpose of destroying the solid-liquid interface and simultaneously forming a vacuum to suck the lens 14 for transfer. In the above process, when the switching worker is manually operated, it is only necessary to manually push the manual switch button 815H5 connected to the sliding link 804 up and down to achieve the same action as the first electromagnetic push rod 812 and the second electromagnetic push rod 813, realizing the conversion of the gas path.

[0062] Step 3, Transfer: The sliding link 804 is reset, the air supply is cut off, and the lens 14 is transferred to the designated position along with the robotic arm 10. After the air blowing is completed, the lens 14 is completely released from the mold as the robotic arm is lifted. At this point, the first and second electromagnetic push rods 812 and 813 are reset, driving the sliding link 804 to move and reset, thereby returning the reversing valve core 80202 to its normally closed position and preventing the inflow of air from the source. As the lens 14 is transferred along with the robotic arm 10, since no air is entering during this process, no air enters the control port of the first air-controlled check valve 7. The check valve core 18 of the first air-controlled check valve 7, driven by the corresponding check valve spring 19, pushes the check valve control piston 20 back to its original position, closing the first air-controlled check valve 7. The connecting tube 904, cross tube, and suction cup 4 remain in a vacuum state, retaining the lens 14. The robotic arm 10 transfers the lens 14 along with the robotic arm 10 to the designated position. During steps 2 and 3, the second air-controlled check valve 907 remains closed.

[0063] Step 4, placement link: move the sliding link 804 downward, so that the core of the normally closed three-position three-way reversing valve 801 moves downward, and the sliding link 804 moves downward, so that the gas from the gas source enters the suction cup 4 at a limited flow rate, so that it is no longer vacuum, and the adsorbed lens 14 is blown off, while preventing the high-speed airflow from blowing off the remaining lenses 14 on the tray. When the lens 14 is transferred to the designated position and the lens 14 is placed, the gas path is also switched by one-button operation. The first electromagnetic push rod 812 and the second electromagnetic push rod 813 push the sliding link 804 downward, so that the reversing valve core 80202 moves downward, so that the gas from the gas source flows into the throttle valve 11 through the normally closed three-position three-way reversing valve 801. The size of the gas flowing through is controlled by twisting the throttle inner valve core 1102 in the throttle valve 11. The gas then enters the straight pipe 908 and the curved pipe 909. Since the curved pipe 909 is connected to the first The control ports of the two pneumatic one-way valves 907 are connected, causing the one-way valve control piston 20 of the second pneumatic one-way valve 907 to move, pushing the corresponding one-way valve core 18 to move. The second pneumatic one-way valve 907 opens, and the gas in the straight tube 908 enters the upper tube 906 through the second pneumatic one-way valve 907. Since the first pneumatic one-way valve 7 is closed, a small flow of gas enters the suction cup 4, eliminating the vacuum and smoothly and accurately blowing off the adsorbed lens 14. The entire operation process is simple and efficient, greatly improving production efficiency. In the above process, when switching to manual operation, it is only necessary to manually push down the manual switch button 815 connected to the sliding link 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 gas path, thereby completing the grasping, transfer, and placement.

[0064] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A multifunctional blanking device for polishing curved optical elements, mounted on the movable end of a robotic arm (10), comprising a base (2) with an operating opening at the bottom, an annular air knife (3) and a suction cup (4) located in the center of the annular air knife (3) arranged inside the base (2), the suction end of the suction cup (4) extending to the operating opening of the base (2), characterized in that: A pipeline (5) is provided in the base (2), and the pipeline (5) is connected to the annular air knife (3) through a Laval tube (6). A first air-controlled 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 converging 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 air-controlled one-way valve (7) is turned on to form an adsorption negative pressure on the suction cup (4).

2. The multifunctional blanking device for polishing curved optical elements according to claim 1, characterized in that: The base (2) comprises an upper shell (201) and a lower shell (202) fixedly connected to the bottom of the upper shell (201); the top of the upper shell (201) is fixedly connected to an end cover (203); the top of the end cover (203) is fixedly connected to a floating joint (204) connected to the robotic arm (1); 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).

3. The multifunctional blanking device for polishing curved optical elements according to claim 2, characterized in that: The airflow reversing assembly (8) comprises a normally closed three-position three-way reversing valve (801) fixedly connected to the inner wall of the upper housing (201); one port of the normally closed three-position three-way reversing valve (801) passes through the upper housing (201) and is connected to a quick-connect connector (802) via a thread; a port at the bottom of the normally closed three-position three-way reversing valve (801) is connected to a suction cup (4); a port of the normally closed three-position three-way reversing valve (801) away from the quick-connect connector (802) is fixedly connected to an elbow (803); an end of the elbow (803) away from the normally closed three-position three-way reversing valve (801) is fixedly connected to a pipeline (5); and a driving member for changing the working state of the normally closed three-position three-way reversing valve (801) is fixedly connected to the inner wall of the upper housing (201).

4. The multifunctional blanking device for polishing curved optical elements according to claim 3, characterized in that: The driving member includes a sliding connecting rod (804), the surface of the sliding connecting rod (804) has a first connecting arm (805), the first connecting arm (805) is connected to the normally closed three-position three-way reversing valve (801) by screws, the inner wall of the upper shell (201) is fixedly connected to the limiting frame (806), the surface of the sliding connecting rod (804) is fixedly connected to a mounting protrusion (807), the bottom of the mounting protrusion (807) is fixedly connected to a first spring (808), one end of the first spring (808) is fixedly connected to the inner bottom wall of the limiting frame (806), the top of the mounting protrusion (807) is fixedly connected to a second spring (809), and the surface of the upper shell (201) is provided with an axial hole, and a latch (810) is fixed in the axial hole.

5. The multifunctional blanking device for polishing curved optical elements according to claim 4, characterized in that: The inner wall of the upper shell (201) is fixedly connected to a fixing frame (811), and the surface of the fixing frame (811) is fixedly connected to a first electromagnetic push rod (812) and a second electromagnetic push rod (813) whose output shafts are opposite to each other. The top of the sliding link (804) is fixedly connected to a second connecting arm (814), and 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 outer side of the sliding link (804) is fixedly connected to a manual switch button (815). An avoidance opening is opened on the surface of the upper shell (201), and the manual switch button (815) is arranged in the avoidance opening. A limiting protrusion (816) is provided on the inner wall of the avoidance opening.

6. The multifunctional blanking device for polishing curved optical elements according to claim 1, characterized in that: 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), the top of the lower plate (302) is provided with an air cavity (303), the Laval tube (6) is connected to the air cavity (303), an air outlet annular port (304) connected to the air cavity (303) is formed between the upper plate (301) and the lower plate (302), the inner annular surface of the lower plate (302) is formed with a guide wall (305), and the bottom of the upper plate (301) is formed with a blocking wall (306) protruding from the guide wall (305).

7. The multifunctional blanking device for polishing curved optical elements according to claim 2, characterized in that: The air flow control assembly (9) comprises a Y-shaped pipe joint (901) fixedly connected to the bottom end of the pipeline (5), the number of the Laval tubes (6) is two, the side ports of the two Laval tubes (6) are respectively connected to one end of the two first air-controlled one-way valves (7), the air inlet ports of the two Laval tubes (6) are fixedly connected to the two ports of the Y-shaped pipe joint (901) through a thick tube (902), the control ports of the two first air-controlled one-way valves (7) are connected to the two narrow ports of the Y-shaped pipe joint (901) through a thin tube (903), and the air inlet ends of the two first air-controlled one-way valves (7) are connected through a connecting pipe (904). A cross pipe joint (905) is fixedly connected, the lower side port of the cross pipe joint (905) is fixedly connected to the negative pressure end of the suction cup (4), the upper side port of the cross pipe joint (905) is fixedly connected to a second air-controlled one-way valve (907) via an upper side pipe (906), the air inlet end of the second air-controlled one-way valve (907) is fixedly connected to a throttle valve (11) via a straight pipe (908), and the control port of the second air-controlled one-way valve (907) is connected to the straight pipe (908) via a bend pipe (909). A mounting port is provided on the side wall of the upper shell (201), and a ventilation net (12) is fixedly connected to the inner wall of the mounting port.

8. The multifunctional blanking device for polishing curved optical elements according to claim 2, characterized in that: The bottom of the lower shell (202) is fixedly connected to a centering assembly (1), and the centering assembly (1) includes a self-centering chuck (101) fixedly connected to the bottom of the lower shell (202). The circular card groove on the outer wall of the lower shell (202) is fixedly connected to a first industrial camera (103) and a second industrial camera (104) through a shaping hose (102).

9. The multifunctional blanking device for polishing curved optical elements according to claim 8, characterized in that: The self-centering chuck (101) comprises an upper fixed plate (10101) fixedly connected to the bottom of the lower shell (202) by screws, the bottom of the upper fixed plate (10101) is fixedly connected to the lower fixed plate (10102) by screws, the bottom of the upper fixed plate (10101) is formed with a protruding ring (10103), the surface of the protruding ring (10103) is provided with an intermediate dial (10104) with a hollow middle portion, a clamping jaw (10106) is provided between the upper fixed plate (10101) and the lower fixed plate (10102) via a first fixing pin (10105), a notch (10107) is provided at the bottom of the intermediate dial (10104), the top of the clamping jaw (10106) is fixedly connected to a second fixing pin (10108), and the clamping jaw (10106) is connected to the slot by the second fixing pin (10108). The upper fixed disk (10101) is connected to a rotating shaft (10111) through a screw, the surface of the intermediate dial (10104) is connected to an arc-shaped rack (10109) through screws, the top of the upper fixed disk (10101) is connected to a protective shell (10110) through 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) is meshed with the arc-shaped rack (10109), the top of the upper fixed disk (10101) is connected to a motor (10113) through screws, the output end of the motor (10113) is fixedly connected to the rotating shaft (10111), the side wall of the upper fixed disk (10101) is fixedly connected to an extension rod (10114), and the side wall of the intermediate dial (10104) is fixedly connected to a shift lever (10115).

10. A multifunctional blanking method for polishing a curved optical element, applied to the multifunctional blanking device for polishing a curved optical element according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The first industrial camera (103) performs image recognition to comprehensively identify the specifications and relative position of the mold (13); the second industrial camera (104) performs position recognition of the lens (14), so that the suction cup (4) and the lens (14) are concentric, and the arc-shaped rack (10109) is driven to rotate, which drives the middle dial (10104) to rotate, so that the clamping claws (10106) are gathered, and at the same time, the displacement of the floating joint (204) is used to achieve precise positioning so that the suction cup (4) and the lens (14) are concentric; Step 2: Move the sliding link (804) upwards, so that the gas from the gas source can enter the pipeline (5), destroying the solid-liquid interface and forming a vacuum to suck the lens (14) for transfer; Step 3: reset the sliding link (804), cut off the air supply, and move the lens (14) to the designated position by the robotic arm (1); Step 4: Move the sliding link (804) downward so that the gas from the gas source enters the suction cup (4) at a limited flow rate, so that the vacuum is no longer formed and the adsorbed lens (14) is blown off, while preventing the high-speed airflow from blowing off the remaining lenses (14) on the tray.

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