A lens clamping device for an optical lens assembling machine

Abstract

The application provides a lens clamping device for an optical lens assembling machine, and relates to the technical field of lens clamping devices.The lens clamping device for the optical lens assembling machine comprises an electric guide rail, a first sleeve, a clamping plate, a vacuum chuck, a suction mechanism and an opening and closing mechanism.The first sleeve can vertically ascend and descend, the vacuum chuck can synchronously move towards or away from each other, the clamping plate is arranged outside the vacuum chuck and moves along with the vacuum chuck, the suction mechanism is used for driving the vacuum chuck to adsorb a lens, and the adsorbed lens moves downward relative to the first sleeve when the first sleeve ascends, so that the clamping plate clamps the lens.The greater the downward displacement of the lens is, the greater the clamping force of the clamping plate is.The opening and closing mechanism is arranged at the upper end of the first sleeve and is used for activating or limiting the displacement state of the clamping plate.In the application, the vacuum chuck avoids stress concentration and damage to the surface of the lens by adjustment, the clamping force of the clamping plate on the outer frame of the lens is adaptively adjusted according to the weight of the adsorbed lens, and the opening and closing mechanism avoids damage caused by lens falling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lens clamping devices, in particular to a lens clamping device for an optical lens assembly machine. BACKGROUND

[0002] With the development of automation, the assembly of lenses gradually abandons the original manual assembly method and adopts mechanical automatic assembly. The lenses can be fixed by clamping or suction and then moved to the assembly equipment for assembly.

[0003] However, when the lenses are lifted by vacuum suction, the position of the vacuum chuck is fixed and cannot be adjusted. When a large lens is suctioned, surface stress concentration is easily caused, which may lead to slight deformation. When the lens is further protected by the clamping structure, the clamping force is fixed. When different lenses are clamped, the clamping force for small lenses is too large and the clamping force for large lenses is too small, which leads to insufficient stability. SUMMARY

[0004] To solve the above problems, the present application provides a lens clamping device for an optical lens assembly machine.

[0005] The present application provides a lens clamping device for an optical lens assembly machine, which comprises an electric guide rail, a first sleeve, a clamping plate, a vacuum chuck, a suction mechanism and an opening and closing mechanism. The first sleeve is vertically liftable at the lower end of the electric guide rail sliding seat. Multiple vacuum chucks are uniformly arranged at the lower end of the first sleeve and can move synchronously towards or away from each other horizontally. Multiple clamping plates are correspondingly arranged outside the vacuum chucks and move synchronously with the vacuum chucks. The suction mechanism is arranged at the bottom end of the electric guide rail sliding seat and is used to drive the vacuum chuck to suction the lens. When the first sleeve rises, the suctioned lens is driven to move downward, so that the multiple clamping plates move synchronously towards each other and are clamped on the outer frame of the lens. The greater the downward displacement of the lens, the greater the clamping force of the clamping plate. The opening and closing mechanism is arranged at the upper end of the first sleeve and is used to activate or limit the displacement state of the clamping plate.

[0006] Optionally, an adjusting mechanism is arranged between the first sleeve and the vacuum chuck. The adjusting mechanism comprises a first circular plate, a cross-shaped groove, a cross-shaped plate, a suction pipe, a second circular plate, an arc-shaped groove, a servo motor and a protective cover. Multiple cross-shaped grooves are uniformly arranged in the first circular plate. Multiple cross-shaped plates are slidingly connected to the inner surfaces of the corresponding cross-shaped grooves. Multiple suction pipes are fixedly arranged on the inner sides of the corresponding cross-shaped plates. The upper end of the vacuum chuck is fixedly connected to the bottom end of the corresponding suction pipe. The servo motor is fixedly arranged at the middle part of the upper end of the first circular plate and has an output end penetrating downward through the first circular plate and fixedly connected with the second circular plate. Multiple arc-shaped grooves are uniformly arranged in the second circular plate. The outer sides of the suction pipes are connected to the inner sides of the corresponding arc-shaped grooves. The protective cover is arranged on the outer side of the servo motor.

[0007] Optionally, the inner side wall of the first sleeve is coaxially slidably connected to the first piston plate, the bottom end of the first piston plate is coaxially fixed with a first spring, the bottom end of the first spring is fixed to the inner bottom surface of the first sleeve, the middle part of the first piston plate is fixed with an air pipe, the air pipe is located on the inner side of the first spring, the air pipe is slidably connected to the middle part of the bottom end of the first sleeve, a sealing ring is provided on the inner side of the middle part of the bottom end of the first sleeve, and the bottom end of the air pipe is fixed to the middle position of the upper end of the protective cover.

[0008] Optionally, the bottom end of the first sleeve is fixedly connected to a plurality of evenly distributed oil delivery hoses, the other end of the oil delivery hose is fixedly connected to a second sleeve, the inner wall of the second sleeve is slidably connected to a second piston plate, a sliding rod is fixedly provided on the middle part of the side surface of the second piston plate, a second spring is sleeved on the outer side of the sliding rod, the two ends of the second spring are respectively fixedly connected to the side surface of the second piston plate and the inner side surface of the second sleeve end portion, a clamping plate is fixedly provided at the end of the sliding rod facing away from the second piston plate, the sliding rod is slidably connected to the inner side of the second sleeve end portion, and the interior of the oil delivery hose and the internal space of the connected first sleeve and second sleeve are filled with hydraulic oil.

[0009] Optionally, an L-shaped plate is fixedly provided on the outer side of the lower end of the exhaust pipe, and the end of the L-shaped plate facing away from the exhaust pipe is fixedly provided on the outer side of the upper end of the second sleeve.

[0010] Optionally, an anti-slip pad is attached to the inner side of the clamping plate.

[0011] Optionally, the air extraction mechanism includes an air extraction pump, a first hose, a fixed tube, a second hose and a third hose. The air extraction pump is fixed on the bottom end of the electric guide rail slide. The air inlet end of the air extraction pump is fixedly connected to the first hose. The air inlet end of the first hose is fixedly connected to the fixed tube. The fixed tube is fixed inside the upper end of the first sleeve. The bottom end of the fixed tube is fixedly connected to the second hose. The air inlet end of the second hose is fixedly connected to the air outlet end of the air supply pipe. The side wall of the air supply pipe is fixedly connected to multiple third hoses. The air inlet end of the third hose is fixedly connected to the corresponding upper end of the air extraction pipe.

[0012] Optionally, the opening and closing mechanism includes a vent pipe and a solenoid valve, the vent pipe is fixed inside the upper end of the first sleeve, the vent pipe is communicated with the interior of the first sleeve, and the solenoid valve is fixedly installed on the vent pipe.

[0013] Optionally, a hydraulic cylinder is fixedly mounted on the bottom end of the electric guide rail slide, and an output end of the hydraulic cylinder is fixedly connected to the middle portion of the upper end of the first sleeve.

[0014] The lens clamping device for an optical lens assembly machine of the present invention has the following beneficial effects:

[0015] 1. By adjusting the relative spacing of multiple vacuum cups according to the size of the lens, the vacuum suction force of multiple vacuum cups is evenly distributed to avoid stress concentration that may cause slight deformation of the lens surface;

[0016] 2. The lens, which is held by the vacuum cup, moves downward relative to the first sleeve, which moves vertically upward. This drives multiple clamping plates to move synchronously toward each other and clamp onto the lens outer frame. The heavier the lens, the greater the downward displacement of the lens relative to the first sleeve, and the stronger the clamping force of the clamping plates on the lens outer frame. In other words, the clamping force of the clamping plates on the lens outer frame is adaptively adjusted according to the weight of the held lens to ensure appropriate stability. Too little clamping force may cause the lens to loosen or fall during movement, while too much clamping force may exceed the elastic limit of the lens material, resulting in irreversible plastic deformation, further protecting the lens clamping.

[0017] 3. The opening and closing mechanism limits the displacement of the clamping plate, keeping it clamped. Even if the lens falls off due to insufficient suction of the vacuum cup, the clamping plate will keep it in place and avoid damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a lens clamping device for an optical lens assembly machine according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the output end structure of the hydraulic cylinder in the lens clamping device for the optical lens assembly machine according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic plan view of the structure of the output end of a hydraulic cylinder in a lens clamping device for an optical lens assembly machine according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 AA section view in the figure;

[0022] Figure 5 This is a schematic structural diagram of the first circular plate in the lens clamping device for an optical lens assembly machine according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the second circular plate in the lens clamping device for an optical lens assembly machine according to an embodiment of the present invention;

[0024] Figure 7 for Figure 4 A magnified view of the structure at point A;

[0025] Figure 8 for Figure 4 A magnified view of the structure at point B in FIG.

[0026] Explanation of the accompanying drawings: 100, electric rail; 101, hydraulic cylinder; 200, first sleeve; 201, first piston plate; 202, first spring; 203, air pipe; 204, oil hose; 205, second sleeve; 206, second piston plate; 207, second spring; 208, slide rod; 209, clamping plate; 210, L-shaped plate; 300, first circular plate; 301, cross-shaped groove; 302, cross-shaped plate; 303, exhaust pipe; 304, vacuum suction cup; 305, second circular plate; 306, arc groove; 307, servo motor; 308, protective cover; 400, exhaust pump; 401, first hose; 402, fixing pipe; 403, second hose; 404, third hose; 500, ventilation pipe; 501, solenoid valve. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] Throughout this specification, reference to terms such as "an embodiment," "one embodiment," "some embodiments," "exemplarily," and "one embodiment" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or embodiments.

[0030] The terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features.

[0031] like Figure 1-8As shown, the lens clamping device for optical lens assembly machine provided by the embodiment of the present application comprises an electric guide rail 100, a first sleeve 200, clamping plates 209, vacuum suction cups 304, a suction mechanism and an opening and closing mechanism. The first sleeve 200 is vertically liftable at the lower end of the sliding seat of the electric guide rail 100. The plurality of vacuum suction cups 304 are uniformly arranged at the lower end of the first sleeve 200 and can move synchronously and oppositely or away from each other in the horizontal direction. The plurality of clamping plates 209 are correspondingly arranged outside the vacuum suction cups 304 and move synchronously with the vacuum suction cups 304. The suction mechanism is arranged at the bottom end of the sliding seat of the electric guide rail 100 and is used to drive the vacuum suction cups 304 to adsorb lenses. When the first sleeve 200 is lifted, the adsorbed lenses are driven to move downward relatively, so that the plurality of clamping plates 209 move synchronously and oppositely and are clamped on the outer frame of the lenses. The greater the amount of downward relative displacement of the lenses, the greater the clamping force of the clamping plates 209. The opening and closing mechanism is arranged at the upper end of the first sleeve 200 and is used to activate or limit the displacement state of the clamping plates 209.

[0032] In this embodiment, the lens barrel is sent to the main assembly station via a conveyor belt and a robot arm, the visual system detects the position of the lens barrel, the fixture fixes it and calibrates the central axis, the lens is separated from the vibration plate, and sent to the buffer area via a conveyor belt and a robot arm. Then, the relative spacing of the multiple vacuum suction cups 304 is adjusted according to the size of the lens, so that the vacuum adsorption force of the multiple vacuum suction cups 304 is evenly distributed to avoid stress concentration causing slight deformation of the lens surface. By adjustment, the multiple vacuum suction cups 304 are moved synchronously toward or away from each other in the horizontal direction. After adjusting the appropriate relative spacing, the first sleeve 200 is then driven to move vertically downward, thereby driving the multiple vacuum suction cups 304 to move synchronously vertically downward, thereby driving the vacuum suction cups 304 located outside the vacuum suction cups 304. The plurality of clamping plates 209 move downwardly in synchronization until the bottom end of the vacuum suction cup 304 is in contact with the upper end surface of the lens. The first sleeve 200 stops moving downward, and then the air inside the plurality of vacuum suction cups 304 is evacuated through the air pump mechanism, so that negative pressure is generated inside the vacuum suction cups 304, thereby adsorbing and fixing the lens. At this time, the plurality of clamping plates 209 are located outside the outer frame of the lens, and then the first sleeve 200 moves upwardly in synchronization. Since the lens itself has a certain weight, the lens adsorbed by the vacuum suction cup 304 is displaced downward relative to the first sleeve 200 during the movement of the first sleeve 200, driving the plurality of clamping plates 209 to move toward each other synchronously and clamp on the outer frame of the lens. The greater the weight of the lens, the greater the relative displacement of the lens to the first sleeve 200. The greater the downward displacement of the sleeve 200, the greater the clamping force of the clamping plate 209 on the lens outer frame, that is, the clamping force of the clamping plate 209 on the lens outer frame is adaptively adjusted according to the weight of the adsorbed lens. If the clamping force is too small, the lens may become loose or fall during movement. If the clamping force is too large, it may exceed the elastic limit of the lens material, resulting in irreversible plastic deformation. The first sleeve 200 continues to move upward until the adsorbed lens does not produce relative displacement, and then the adsorbed lens follows the first sleeve 200 to rise vertically to a certain height synchronously, and moves horizontally through the electric guide rail 100. During this process, the displacement state of the clamping plate 209 is limited by the opening and closing mechanism, so that the clamping plate 209 remains clamped, even if the lens is affected by the vacuum suction cup 3 04 Insufficient suction force causes it to fall off, and the clamping plate 209 will keep its position unchanged to avoid damage. When the lens is hoisted to the top of the assembly station, the first sleeve 200 starts to move vertically downward, driving the adsorbed lens to move vertically downward synchronously until the lens is slowly pressed down and embedded in the lens barrel positioning groove. At this time, the exhaust mechanism is closed, and the vacuum suction cup 304 no longer generates negative pressure. At the same time, the displacement state of the clamping plate 209 is activated. At this time, the vacuum suction cup 304 no longer generates relative displacement because it is separated from the weight of the lens and moves in the opposite direction and resets. At the same time, it drives multiple clamping plates 209 to move synchronously away from the outer frame of the lens, and then controls the first sleeve 200 to return to its original position for the next round of clamping. Finally, the thread is locked to fix the lens position.

[0033] By adjusting the relative spacing of the multiple vacuum suction cups 304 according to the size of the lens, the vacuum adsorption force of the multiple vacuum suction cups 304 is evenly distributed, avoiding stress concentration and causing slight deformation of the lens surface; the first sleeve 200 that moves vertically upward relative to the lens adsorbed by the vacuum suction cups 304 moves downward relatively, driving the multiple clamping plates 209 to move synchronously toward each other and clamp on the lens outer frame, and the greater the weight of the lens, the greater the downward displacement of the lens relative to the first sleeve 200, and the greater the clamping force of the clamping plates 209 on the lens outer frame, that is, based on the lens weight. The clamping force of the clamping plate 209 on the outer frame of the lens is adaptively adjusted according to the weight of the adsorbed lens to ensure moderate stability. Too little clamping force may cause the lens to loosen or fall during movement, while too much clamping force may exceed the elastic limit of the lens material, resulting in irreversible plastic deformation, further protecting the lens clamping. The opening and closing mechanism limits the displacement state of the clamping plate 209, so that the clamping plate 209 remains in a clamped state. Even if the lens falls off due to insufficient suction of the vacuum suction cup 304, the position remains unchanged due to the clamping of the clamping plate 209 to avoid damage.

[0034] like Figure 2 、 Figure 5 and Figure 6 As shown, optionally, an adjustment mechanism is provided between the first sleeve 200 and the vacuum suction cup 304, the adjustment mechanism including a first circular plate 300, a cross-shaped groove 301, a cross-shaped plate 302, an exhaust pipe 303, a second circular plate 305, an arc-shaped groove 306, a servo motor 307 and a protective cover 308, a plurality of cross-shaped grooves 301 are evenly opened inside the first circular plate 300, a plurality of cross-shaped plates 302 are slidably connected to the inner surface of the corresponding cross-shaped grooves 301, and a plurality of exhaust pipes 303 are provided. 03 is fixed on the inner side of the middle of the corresponding cross-shaped plate 302, the upper end of the vacuum suction cup 304 is fixedly connected to the bottom end of the corresponding exhaust pipe 303, the servo motor 307 is fixed on the middle of the upper end of the first circular plate 300 and the output end passes downward through the first circular plate 300 and is fixed with a second circular plate 305, a plurality of arc grooves 306 are evenly opened inside the second circular plate 305, the outer side of the exhaust pipe 303 is in contact with the inner side of the corresponding arc groove 306, and the protective cover 308 is installed on the outside of the servo motor 307.

[0035] In this embodiment, the exhaust pipe 303 is fixed inside the cross-shaped plate 302, and the cross-shaped plate 302 can slide inside the cross-shaped groove 301, so the exhaust pipe 303 can move back and forth along the radial direction of the first circular plate 300 with the vacuum suction cup 304, and the servo motor 307 drives the second circular plate 305 to rotate relative to the first circular plate 300. Since the exhaust pipe 303 contacts the inner side of the arc groove 306, the arc groove 306 rotates and squeezes the exhaust pipe 303 through the inner side to move, and the exhaust pipe 303 is restricted to only move radially, so when the second circular plate When 305 rotates relative to each other, it can drive multiple exhaust pipes 303 to move synchronously toward or away from each other along the radial direction of the first circular plate 300, thereby driving the vacuum suction cup 304 to move synchronously. By adjusting the relative spacing of the multiple vacuum suction cups 304 according to the size of the lens, the vacuum adsorption force of the multiple vacuum suction cups 304 is evenly distributed, avoiding stress concentration and causing slight deformation of the lens surface. The protective cover 308 is used to protect the servo motor 307. Multiple heat dissipation holes are provided on the outside of the protective cover 308 to facilitate heat dissipation of the servo motor 307.

[0036] like Figure 4 As shown, optionally, the inner wall of the first sleeve 200 is coaxially slidably connected to the first piston plate 201, the bottom end of the first piston plate 201 is coaxially fixed with a first spring 202, the bottom end of the first spring 202 is fixed on the inner bottom surface of the first sleeve 200, and the middle part of the first piston plate 201 is fixed with an air pipe 203, the air pipe 203 is located on the inner side of the first spring 202, and the air pipe 203 is slidably connected to the middle part of the bottom end of the first sleeve 200. A sealing ring is provided on the inner side of the middle part of the bottom end of the first sleeve 200, and the bottom end of the air pipe 203 is fixed at the middle position of the upper end of the protective cover 308.

[0037] In this embodiment, when the vacuum suction cup 304 absorbs the lens, the first sleeve 200 then starts to move vertically upward. Since the lens has weight, a downward pulling force is generated on the first piston plate 201 through the vacuum suction cup 304, the adjustment mechanism and the air pipe 203, so that the first piston plate 201 moves vertically downward relative to the first sleeve 200 and compresses the first spring 202. The first spring 202 generates an upward push through deformation. When the force reaches a balance, the lens begins to move vertically upward synchronously with the first sleeve 200. If the vacuum suction cup 304 moves upward directly after absorbing the lens, it will cause instantaneous stress concentration, which may easily damage the lens surface. By slowly increasing the reverse thrust on the first spring 202 until the lens follows and rises synchronously, instantaneous stress concentration is avoided through buffering, and the lens is protected.

[0038] like Figure 4 、 Figure 7 and Figure 8As shown, optionally, a plurality of uniformly distributed oil delivery hoses 204 are fixedly connected to the bottom end of the first sleeve 200, the other end of the oil delivery hose 204 is fixedly connected to a second sleeve 205, a second piston plate 206 is slidingly connected to the inner side wall of the second sleeve 205, a slide rod 208 is fixedly arranged on the middle part of the side surface of the second piston plate 206, a second spring 207 is sleeved on the outer side of the slide rod 208, and the two ends of the second spring 207 are fixedly connected to the side surface of the second piston plate 206 and the inner side surface of the end of the second sleeve 205 respectively, a clamping plate 209 is fixedly arranged on the end of the slide rod 208 away from the second piston plate 206, the slide rod 208 is slidingly connected to the inner side of the end of the second sleeve 205, and the inside of the oil delivery hose 204 and the inside space of the first sleeve 200 and the second sleeve 205 connected thereto are filled with hydraulic oil.

[0039] In this embodiment, when the vacuum chuck 304 adsorbs the lens, then the first sleeve 200 starts to move vertically upward, because the lens has a weight, so that the vacuum chuck 304, the adjusting mechanism and the gas delivery pipe 203 generate a downward pulling force on the first piston plate 201, so that the first piston plate 201 moves vertically downward relative to the first sleeve 200 and compresses the first spring 202, and when the first piston plate 201 moves downward, the hydraulic oil is extruded, the hydraulic oil enters the inside space of the second sleeve 205 connected through the oil delivery hose 204, the hydraulic oil pressure in the second sleeve 205 increases to push the second piston plate 206 to move outward, and then the clamping plate 209 is driven by the slide rod 208 to move outward, at this time the second spring 207 is compressed, that is, the greater the weight of the lens, the greater the downward displacement of the first piston plate 201, the more hydraulic oil is extruded, and the greater the force pushing the clamping plate 209 to move outward, that is, the greater the clamping force, so as to realize self-adaptive adjustment of the clamping force, ensure moderate clamping and stability; when the lens is no longer adsorbed, at this time the first spring 202 resets to push the first piston plate 201 to move upward, the lower end space becomes larger to start to suck hydraulic oil, the hydraulic oil in the second sleeve 205 decreases and the pressure decreases, the second spring 207 resets and the clamping plate 209 moves away from the lens frame synchronously.

[0040] As shown in the figure, Figure 2 With Figure 4 As shown, optionally, an L-shaped plate 210 is fixedly arranged on the outer side of the lower end of the air suction pipe 303, and the end of the L-shaped plate 210 away from the air suction pipe 303 is fixedly arranged on the outer side of the upper end of the second sleeve 205.

[0041] In this embodiment, the second sleeve 205 moves synchronously with the corresponding air suction pipe 303 through the L-shaped plate 210, that is, the clamping plate 209 moves synchronously with the vacuum chuck 304, and when the vacuum chuck 304 adsorbs the lens, the clamping plate 209 is always located outside the lens frame.

[0042] As shown in the figure, Figure 4 As shown, optionally, a non-slip pad is attached to the inner side of the clamping plate 209.

[0043] In this embodiment, the provision of the anti-slip pad not only improves the clamping stability but also plays a buffering and protective role.

[0044] like Figure 1 、 Figure 2 and Figure 4 As shown, optionally, the vacuum mechanism includes an vacuum pump 400, a first hose 401, a fixed tube 402, a second hose 403 and a third hose 404. The vacuum pump 400 is fixed on the bottom end of the slide of the electric guide rail 100. The air inlet end of the vacuum pump 400 is fixedly connected to the first hose 401. The air inlet end of the first hose 401 is fixedly connected to the fixed tube 402. The fixed tube 402 is fixed inside the upper end of the first sleeve 200. The bottom end of the fixed tube 402 is fixedly connected to the second hose 403. The air inlet end of the second hose 403 is fixedly connected to the air outlet end of the air supply pipe 203. The side wall of the air supply pipe 203 is fixedly connected to multiple third hoses 404. The air inlet end of the third hose 404 is fixedly connected to the upper end of the corresponding vacuum pipe 303.

[0045] In this embodiment, the vacuum pump 400 is started to evacuate the fixed tube 402 through the first hose 401, and then evacuate the air in the air supply pipe 203 through the second hose 403, and then evacuate the air in the exhaust pipe 303 through the third hose 404, and then evacuate the air in the vacuum suction cup 304. Here, the first hose 401, the second hose 403 and the third hose 404 can all be telescopically deformed to adapt to structural movement changes.

[0046] like Figure 4 As shown, optionally, the opening and closing mechanism includes a vent pipe 500 and a solenoid valve 501 . The vent pipe 500 is fixed inside the upper end of the first sleeve 200 . The vent pipe 500 is connected to the interior of the first sleeve 200 . The solenoid valve 501 is fixedly installed on the vent pipe 500 .

[0047] In this embodiment, the upper space of the first piston plate 201 is connected to the outside through the ventilation pipe 500, and the ventilation pipe 500 is controlled to be on and off by the solenoid valve 501. When the solenoid valve 501 closes the ventilation pipe 500, the upper space of the first piston plate 201 is a closed space. At this time, the first piston plate 201 cannot move vertically, that is, the hydraulic oil at the lower end will not change, that is, the hydraulic oil pressure in the second sleeve 205 remains unchanged, that is, the clamping force of the clamping plate 209 will not change, even if the vacuum suction cup 304 falls off, the lens will not fall off due to the clamping.

[0048] like Figure 1 As shown, optionally, a hydraulic cylinder 101 is fixedly installed at the bottom end of the slide of the electric guide rail 100, and the output end of the hydraulic cylinder 101 is fixedly connected to the middle part of the upper end of the first sleeve 200.

[0049] In this embodiment, the first sleeve 200 is driven to move vertically up and down by the hydraulic cylinder 101, and is driven to move horizontally back and forth by the electric guide rail 100.

[0050] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A lens clamping device for an optical lens assembly machine, characterized in that: The invention comprises an electric guide rail (100), a first sleeve (200), a clamping plate (209), a vacuum suction cup (304), an air extraction mechanism and an opening and closing mechanism, wherein the first sleeve (200) can be vertically lifted and lowered at the lower end of the slide seat of the electric guide rail (100), a plurality of vacuum suction cups (304) are evenly arranged at the lower end of the first sleeve (200) and can be synchronously moved toward or away from each other in the horizontal direction, and a plurality of clamping plates (209) are correspondingly arranged on the outside of the vacuum suction cup (304) and move synchronously with the vacuum suction cup (304). The suction mechanism is provided on the bottom end of the electric guide rail (100) slide seat and is used to drive the vacuum suction cup (304) to absorb the lens. When the first sleeve (200) rises, the absorbed lens is driven to move downward relatively, so that the multiple clamping plates (209) move synchronously towards each other and are clamped on the lens outer frame. When the relative downward displacement of the lens is greater, the clamping force of the clamping plates (209) is greater. The opening and closing mechanism is provided on the upper end of the first sleeve (200) and is used to activate or limit the displacement state of the clamping plates (209); The inner wall of the first sleeve (200) is coaxially slidably connected to a first piston plate (201), the bottom end of the first piston plate (201) is coaxially fixed with a first spring (202), the bottom end of the first spring (202) is fixed on the inner bottom surface of the first sleeve (200), an air supply pipe (203) is fixed in the middle of the first piston plate (201), the air supply pipe (203) is located inside the first spring (202), the air supply pipe (203) is slidably connected to the middle of the bottom end of the first sleeve (200), a sealing ring is provided inside the middle of the bottom end of the first sleeve (200), and the bottom end of the air supply pipe (203) is fixed at the middle position of the upper end of the protective cover (308); The bottom end of the first sleeve (200) is fixedly connected to a plurality of evenly distributed oil delivery hoses (204), the other end of the oil delivery hose (204) is fixedly connected to a second sleeve (205), the inner wall of the second sleeve (205) is slidably connected to a second piston plate (206), a sliding rod (208) is fixedly provided in the middle of the side of the second piston plate (206), a second spring (207) is sleeved on the outer side of the sliding rod (208), the two ends of the second spring (207) are respectively fixedly connected to the side of the second piston plate (206) and the inner side of the end of the second sleeve (205), a clamping plate (209) is fixedly provided at one end of the sliding rod (208) away from the second piston plate (206), the sliding rod (208) is slidably connected to the inner side of the end of the second sleeve (205), and the interior of the oil delivery hose (204) and the internal space of the connected first sleeve (200) and second sleeve (205) are filled with hydraulic oil; The upper end of the vacuum suction cup (304) is fixedly connected to the bottom end of the corresponding exhaust pipe (303), an L-shaped plate (210) is fixedly provided on the outer side of the lower end of the exhaust pipe (303), and the end of the L-shaped plate (210) facing away from the exhaust pipe (303) is fixedly provided on the outer side of the upper end of the second sleeve (205); The opening and closing mechanism comprises a vent pipe (500) and a solenoid valve (501); the vent pipe (500) is fixedly arranged inside the upper end of the first sleeve (200); the vent pipe (500) is communicated with the interior of the first sleeve (200); and the solenoid valve (501) is fixedly installed on the vent pipe (500).

2. The lens clamping device for an optical lens assembly machine according to claim 1, wherein: An adjustment mechanism is provided between the first sleeve (200) and the vacuum suction cup (304), the adjustment mechanism comprising a first circular plate (300), a cross-shaped groove (301), a cross-shaped plate (302), an exhaust pipe (303), a second circular plate (305), an arc-shaped groove (306), a servo motor (307) and a protective cover (308), a plurality of the cross-shaped grooves (301) are evenly arranged inside the first circular plate (300), and a plurality of the cross-shaped plates (302) are slidably connected to the corresponding cross-shaped grooves (301). On the surface, a plurality of the exhaust pipes (303) are fixedly arranged on the inner side of the middle of the corresponding cross-shaped plate (302), the servo motor (307) is fixedly arranged on the middle of the upper end of the first circular plate (300) and the output end passes downward through the first circular plate (300) and is fixedly provided with a second circular plate (305), a plurality of the arc-shaped grooves (306) are evenly opened inside the second circular plate (305), the outer side of the exhaust pipe (303) is in contact with the inner side of the corresponding arc-shaped groove (306), and the protective cover (308) is installed on the outer side of the servo motor (307).

3. The lens clamping device for an optical lens assembly machine according to claim 1, wherein: An anti-slip pad is attached to the inner side of the clamping plate (209).

4. The lens clamping device for an optical lens assembly machine according to claim 1, wherein: The air extraction mechanism comprises an air extraction pump (400), a first hose (401), a fixed pipe (402), a second hose (403) and a third hose (404); the air extraction pump (400) is fixedly arranged on the bottom end of the slide seat of the electric guide rail (100); the air inlet end of the air extraction pump (400) is fixedly connected to the first hose (401); the air inlet end of the first hose (401) is fixedly connected to the fixed pipe (402); the fixed pipe (402) is fixedly arranged inside the upper end of the first sleeve (200); the bottom end of the fixed pipe (402) is fixedly connected to the second hose (403); the air inlet end of the second hose (403) is fixedly connected to the air outlet end of the air supply pipe (203); the side wall of the air supply pipe (203) is fixedly connected to multiple third hoses (404); the air inlet end of the third hose (404) is fixedly connected to the upper end of the corresponding air extraction pipe (303).

5. The lens clamping device for an optical lens assembly machine according to claim 1, wherein: A hydraulic cylinder (101) is fixedly mounted on the bottom end of the slide seat of the electric guide rail (100), and an output end of the hydraulic cylinder (101) is fixedly connected to the middle portion of the upper end of the first sleeve (200).

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