Film tearing device for lens protective film

Abstract

The invention relates to lens processing equipment, in particular to a film tearing device for a lens protective film. A film tearing device for a lens protection film comprises a working platform, one side of the working platform is provided with a feeding part used for conveying a lens, the inner side of the feeding part is provided with a film warping part used for warping the lens protection film, and the same side of the film warping part is provided with a film tearing part used for conducting film tearing operation on the warped protection film. And a rotary manipulator for transferring the lens is arranged among the feeding part, the film warping part and the film tearing part. According to the film tearing device for the lens protection film, the feeding part, the film warping part and the film tearing part are integrated through the working platform to achieve automatic operation, after the feeding part continuously conveys a lens to a station, the film warping part locally warps the protection film on the edge of the lens, and the rotating mechanical arm is fixed to the side of the platform through the rotating support. The lenses are sequentially transferred to the film warping part from the feeding part to complete film warping and then transferred to the film tearing part to complete protective film stripping, and accurate transferring and efficient film tearing of the lenses among multiple stations are achieved through air cylinder linkage and rotary positioning in the whole process.

Description

Technical Field

[0001] The invention relates to lens processing equipment, in particular to a film tearing device for lens protective film. Background Art

[0002] As people's quality of life continues to improve, the demand for high-quality free-form and aspheric vision lenses is also growing. This demand will inevitably greatly promote the improvement and popularization of automated production and manufacturing of car lenses. Before processing, car lenses need to be glued with a protective film on the non-processed surface, and the tooling is fixed on the basis of the protective film to meet the needs of subsequent ultra-precision processing (ultra-precision cutting and polishing) of car lenses. After the ultra-precision processing of the car lenses is completed, they are removed from the fixed tooling. At this time, there is still a protective film left on the non-processed surface of the car lenses. The protective film needs to be separated from the car lenses before the subsequent hard coating and other processes can be carried out. At present, the conventional way to separate the protective film from the lens is to manually peel off the protective film. The disadvantages of this method are obvious. It requires a lot of labor and affects the degree of automation of the industry. In addition, manual peeling of the protective film may also cause scratches or damage on the surface of the lens, which reduces the yield rate of lens production.

[0003] In view of the above-mentioned defects, the designer has actively carried out research and innovation in order to create a film tearing device for lens protective film to make it more valuable for industrial use. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a film tearing device for lens protective film.

[0005] The present invention discloses a film-tearing device for lens protective film, comprising a working platform, a feeding part for conveying lenses on one side of the working platform, a film-tearing part for lifting the lens protective film on the inner side of the feeding part, a film-tearing part for tearing the lifted protective film on the same side of the film-tearing part, and a rotating manipulator for transferring lenses between the feeding part, the film-tearing part and the film-tearing part; The rotating manipulator includes a rotating bracket fixed to the working platform, a lifting cylinder is installed on the side wall of the rotating bracket, the rotating cylinder is installed on the top of the telescopic rod of the lifting cylinder through a connecting plate, a rotating seat is installed on the rotating axis of the rotating cylinder, and there are three connecting rods of equal length extending outward on the rotating seat. A suction cup is fixed on the end of the connecting rod, and the suction cup is connected to the air pump through a pipeline.

[0006] This film tearing device for lens protective film realizes automated operation by integrating a feeding part, a film lifting part and a film tearing part on a working platform. After the feeding part continuously transports the lens to the workstation, the film lifting part partially lifts the protective film on the edge of the lens. The rotating manipulator is fixed to the side of the platform by a rotating bracket. The lifting cylinder drives the rotating cylinder and the rotating seat on the connecting plate to perform vertical lifting and horizontal rotation. The suction cups at the ends of the three equal-length connecting rods on the rotating seat adsorb the lens under the negative pressure of the air pump, and the lens is transferred from the feeding part to the film lifting part to complete the film lifting, and then transferred to the film tearing part to complete the peeling of the protective film. The whole process realizes the precise transfer of lenses between multiple workstations and efficient film tearing through cylinder linkage and rotation positioning.

[0007] Furthermore, the feeding part includes a conveying frame fixedly mounted on the working platform, and a conveying motor for driving a belt mounted on the conveying frame is installed on one side of the conveying frame. Multiple material boxes are placed on the belt, and the material boxes have placement grooves for limiting the position of lenses. The suction cup can be extended into the material box to grab the lenses in the placement grooves.

[0008] The feeding department realizes automatic lens conveying through the conveyor frame fixed on the working platform. The conveying motor on the side of the conveyor frame drives the belt to circulate. Multiple material boxes with placement slots are equidistantly installed on the belt surface. After the lens is limited in the slot and moves with the belt to the preset station, the rotary manipulator is driven by the lifting cylinder to vertically descend the suction cup and accurately extend into the material box, and the negative pressure of the air pump is used to adsorb the lens in the placement slot. Then the rotating cylinder drives the three connecting rods to rotate synchronously through the rotating seat, and transfers the lenses to the film warping department in turn to lift the edge of the protective film, and then transports them to the film tearing department to complete clamping and peeling, and finally the waste film is recovered by the receiving mechanism. During the process, the PLC coordinates the start and stop rhythm of the conveying motor, the lifting and rotation timing of the rotary manipulator and the adsorption pressure of the air pump to ensure efficient connection and precise control of the entire process of lens feeding, positioning, grasping and transfer.

[0009] Furthermore, a plurality of limiters are installed on the inner side of the conveying frame through the connecting plate, and the telescopic heads on the limiters can cooperate with the card slots at the bottom of the material box.

[0010] Multiple sets of limiters are installed on the inner side of the conveyor frame through the connecting plate. When the belt drives the material box to move to the preset workstation, the telescopic head of the limiter automatically extends and precisely fits into the slot at the bottom of the material box to fix the position of the material box to prevent displacement and ensure that the lens grasping posture is stable when the suction cup is vertically extended into the material box placement slot driven by the lifting cylinder.

[0011] Furthermore, the film-lifting part includes a film-lifting bracket fixedly installed on the working platform, the middle part of the film-lifting bracket is a film-lifting seat for supporting the lens, the suction cup can move the lens onto the film-lifting seat, the two sides of the film-lifting seat are open, and two metal sheets are installed on the two sides of the film-lifting seat by means of sliding rails and sliders. The metal sheets are heated by electric heating, and one side of the slider is fixedly connected to the telescopic rod of the driving cylinder through a connecting plate, and the driving cylinder drives the metal sheet forward to approach the edge of the lens.

[0012] The film lifting department supports the lens through the film lifting bracket fixed on the working platform. After the suction cup transfers the lens to the film lifting seat, the metal sheets on the slide rails on both sides of the film lifting seat with opening structures on both sides are pushed forward along the slide rails by the driving cylinder. The electrically heated metal sheets are precisely close to the edge of the lens and partially soften the protective film. The edge of the protective film is lifted up through the combination of heat conduction and mechanical pressure to form the starting point for peeling. Then the rotating manipulator transfers the lens to the film tearing department for subsequent peeling. During the process, the PLC synchronously controls the extension and retraction stroke of the driving cylinder, the heating temperature of the metal sheet and the transfer timing of the rotating manipulator to ensure efficient connection between the film lifting action and the film tearing process, thereby improving the stability and yield rate of the protective film peeling.

[0013] Furthermore, the film tearing part includes a box body installed on the working platform, the box body is spliced ​​by multiple plates, an upper plate is installed on the outer side of the box body through multiple connecting rods, the upper plate has a through hole for placing the lens, and a spray cylinder is installed on one side of the box body through a bracket, and a spray head is installed on the telescopic rod of the spray cylinder through a connecting plate, the spray head can pass through the through hole on the side wall of the box body, and the spray head is connected to the water pump through a pipeline.

[0014] The film tearing department constructs a closed working space by a box fixed to the work platform. After the lens is transferred by the rotating manipulator to the through hole of the upper plate suspended by the connecting rod outside the box and positioned, the jet cylinder drives the telescopic rod to drive the jet head to extend horizontally into the working area along the through hole on the side wall of the box. The water pump delivers high-pressure water to the jet head through the pipeline. The water flow accurately impacts the edge of the protective film that has been raised on the surface of the lens, and the protective film is completely peeled off from the surface of the lens by using water pressure and impact force. The peeled waste film flows with water through the drain port at the bottom of the box into the waste recovery system. During the process, the PLC synchronously controls the telescopic stroke of the jet cylinder, the water pump pressure and the start and stop timing of the jet head to ensure the dynamic matching of the film tearing action with the lens positioning and the water flow impact intensity, so as to realize the efficient peeling of the protective film and the automatic recycling of waste.

[0015] Furthermore, there is an inner groove in the middle position of the upper plate, and a cover plate is installed on the upper edge of the upper plate above the partition. The space between the cover plate and the inner groove is used to install a partition that can block the through hole of the upper plate. The partition is movably installed in the inner groove of the upper plate through an axis. A partition cylinder is movably installed on the upper plate through an axis. The telescopic rod of the partition cylinder is movably connected to the vertical partition connecting rod at the rear end of the partition, and the cover plate is provided with an arc groove for moving the partition connecting rod.

[0016] The upper plate is equipped with a movable partition through the space formed by the middle inner sink groove and the cover plate. The partition is fixed in the inner sink groove through an axis. The partition cylinder drives the partition connecting rod to move along the arc groove trajectory of the cover plate through the telescopic rod, driving the partition to rotate around the axis to open or close the through hole of the upper plate; when the lens is positioned through the through hole, the partition cylinder pushes the partition to close, accurately blocking the through hole to ensure that the lens is fixed, and then the spray head extends into the box to perform high-pressure water stripping operation. After the waste film is discharged with the water flow, the partition cylinder resets to drive the partition to open, releasing the lens to enter the next process. The PLC synchronously controls the partition cylinder stroke, the spray head action timing and the start and stop of the water pump to achieve seamless connection between the dynamic sealing of the partition and the stripping process.

[0017] Furthermore, an angular reducer is installed on the working platform through a bracket, a rotating motor is installed on the angular reducer, a rotating shaft is installed on the output shaft of the angular reducer, and a negative pressure suction cup is fixed on the top of the rotating shaft.

[0018] The rotating motor drives the angular reducer to drive the rotating shaft to rotate at multiple angles. After the negative pressure suction cup adsorbs the lens at the top of the rotating shaft, the rotating motor adjusts the speed and direction through the angular reducer so that the high-pressure water flow ejected by the spray head can flush the raised protective film area, making it easier to tear off the film.

[0019] Furthermore, a through hole is provided on the working platform and located in the box body, and a water tank is arranged on the bracket below the through hole.

[0020] The through hole inside the box on the working platform is linked to the water tank fixed by the bracket below. When the spray head completes the high-pressure water stripping of the lens, the water containing the protective film fragments flows through the through hole of the box and falls vertically into the water tank, completing the collection of waste and wastewater.

[0021] Furthermore, the two connecting rods located on both sides of the rotating seat are located on the same straight line, the third connecting rod is perpendicular to the other two connecting rods, and an auxiliary rod is fixed to the outer end of the connecting rod.

[0022] Two connecting rods distributed in a straight line on both sides of the rotating seat and a third connecting rod perpendicular thereto form a three-dimensional rigid support frame. Auxiliary rods are fixed to the outer ends of each connecting rod and extend to the corresponding workstations. The auxiliary rods connect the connecting rods to improve the structural stability among the three connecting rods.

[0023] By means of the above scheme, the present invention has at least the following advantages: 1. The structural design is concise and efficient, the structure of the processed parts is relatively simple, and the precision requirements can be widely accepted by the current finishing industry. Therefore, the cost of equipment manufacturing, installation, and after-sales maintenance can be relatively low.

[0024] 2. Equipped with automatic feeding conveyor belt, it can be directly integrated into the industrialized ultra-precision automatic production line of resin workshop lenses as an equipment unit, saving manpower and labor costs, while greatly improving the production efficiency and quality consistency of lenses.

[0025] 3. Using a multi-station robot mechanism, lenses at different stations can be transferred to the next station at the same time, which greatly saves the conversion time and improves the working efficiency of the equipment.

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 The present invention Figure 1 Schematic diagram from another perspective; Figure 3 It is a structural schematic diagram of the feeding part of the present invention; Figure 4 It is a structural schematic diagram of the warping film portion of the present invention; Figure 5 It is a structural schematic diagram of the film tearing part of the present invention; Figure 6 The present invention Figure 5 Schematic diagram of the structure after removing the cover plate; Figure 7 It is a schematic structural diagram of the film-tearing part of the present invention after the box body is removed; Figure 8 The present invention Figure 5 A partial enlarged schematic diagram of Fig. 9 It is a schematic diagram of placing a water tank of the present invention; In the figure, 1, working platform, 2, rotating bracket, 3, rotating cylinder, 4, rotating seat, 5, connecting rod, 6, suction cup, 7, conveying frame, 8, conveying motor, 9, material box, 10, limiter, 11, film-warping bracket, 12, film-warping seat, 13, metal sheet, 14, driving cylinder, 15, box body, 16, upper plate, 17, injection cylinder, 18, injection head, 19, partition, 20, cover plate, 21, partition cylinder, 22, partition connecting rod, 23, angular reducer, 24, rotating motor, 25, rotating shaft, 26, negative pressure suction cup, 27, water tank, 28, auxiliary rod. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] See also Figure 1 and Figure 2 The film tearing device for lens protective film, after the lens is transported to the workstation through the feeding part, the lifting cylinder of the rotary manipulator drives the rotary cylinder 3 to descend, and the suction cup 6 adsorbs the lens under the negative pressure of the air pump, and then the lifting cylinder resets and links the rotary cylinder 3 to drive the rotating seat 4 and three equal-length connecting rods 5 to rotate synchronously, so as to accurately transfer the lens to the film warping part; after the film warping part lifts the protective film on the edge of the lens, the rotary cylinder 3 rotates again to transfer the lens to the film tearing part, and the film tearing part peels off the lifted film layer at a uniform speed. During the process, the 180° uniform distribution design of the three connecting rods 5 can realize multi-station continuous cycle operation, and cooperate with PLC programmatic control of lifting, rotation timing and air pump negative pressure intensity to ensure that the lens is positioned without offset and adsorbed without damage; its working advantage is that the fully automated process significantly improves efficiency, the multi-degree-of-freedom collaborative operation of the rotary manipulator realizes high-precision synchronous transportation, the three-link structure expands the number of workstations covered by a single operation, and the flexible adsorption of the air pump and the suction cup adapts to lenses with different curvatures and avoids surface scratches.

[0031] See also Figure 3The feeding part drives the belt on the conveying frame 7 to circulate at a uniform speed through the conveying motor 8. When the material box 9 moves to the preset station with the belt, the PLC controls the conveying motor 8 to pause and triggers the suction cup 6 of the rotating manipulator to descend, and uses the negative pressure of the air pump to accurately adsorb the lens in the placement slot. After the grabbing is completed, the conveying motor 8 automatically restarts and conveys the next material box 9 to the waiting position, forming a continuous feeding cycle; its working advantage lies in the belt conveying structure combined with the modular material box 9 design to realize batch and orderly feeding of lenses, the limiting function of the placement slot and the flexible adsorption of the suction cup 6 cooperate to ensure that the lenses are grabbed without offset and scratches, and the timing joint control of the start and stop of the conveying motor 8 and the action of the manipulator is realized through PLC programming. Efficient synchronization is achieved, reducing the idle waiting time, and the open conveying frame 7 and the standardized material box 9 are convenient for quick replacement to adapt to lenses of different sizes to meet the production needs of multiple specifications, and the overall system has high-precision positioning.

[0032] The conveyor frame 7 realizes precise positioning through the mechanical interlocking of the telescopic head of the limiter 10 and the bottom card slot of the material box 9. When the belt drives the material box 9 to move to the preset station, the PLC controls the telescopic head of the limiter 10 to extend and embed into the card slot, forcibly fixing the position of the material box 9 to offset the inertial sliding or vibration deviation of the belt, ensuring that the suction cup 6 is aligned with the center of the lens in the placement slot when it descends vertically. After the grabbing is completed, the telescopic head automatically retracts and releases the material box 9, and the conveying motor 8 immediately drives the belt to enter the next cycle; its working advantage is that the rigid clamping mechanism of the limiter 10 significantly improves the positioning repeatability, avoiding the risk of misjudgment caused by lens reflection or environmental interference of traditional photoelectric sensors. At the same time, the wedge-shaped matching design of the card slot and the telescopic head can adaptively compensate for the slight displacement caused by belt wear or tension change, ensuring long-term operation stability, and with the modular material box 9 structure, the equipment's compatibility with special-shaped lenses or diversified production batches is further expanded. The overall system can still maintain high-reliability grabbing and low failure rate under high-speed continuous operation, which is suitable for the high-beat feeding requirements of the automated production line of precision optical components.

[0033] See also Figure 4After the film warping part places the lens accurately on the film warping seat 12 by rotating the suction cup 6 of the manipulator, the driving cylinder 14 pushes the slider along the slide rail to drive the preheated metal sheets 13 on both sides to move synchronously toward the edge of the lens. When the heated metal sheet 13 approaches the protective film, the film layer is softened by heat conduction. During the natural deformation of the protective film, the edge of the film is warped, and then the metal sheet 13 is reset to provide an operating space for the suction cup 6 to transfer the lens; its working advantage lies in the heat of the electric heating metal sheet 13 and the principle of the shrinkage deformation of the protective film itself, which makes the edge of the protective film warp. The slide rail slider structure cooperates with the linear control of the driving cylinder 14 to ensure that the moving trajectory of the metal sheet 13 is accurate and stable. The symmetrical layout on both sides is adapted to the edge processing requirements of lenses of different sizes. At the same time, the opening design of the film warping seat 12 allows the metal sheet 13 to approach the operation without interference. Combined with the temperature closed-loop control and the adjustable cylinder stroke mechanism, the process parameters of the film layer warping height, angle and heat action time are accurately matched. The overall system takes into account both high success rate and zero lens thermal damage characteristics under high-speed continuous operation.

[0034] See also Figure 5-Figure 8 The film peeling part drives the spray head 18 through the spray cylinder 17 to extend horizontally into the box 15 along the through hole on the side wall. When the suction cup 6 places the lens with the lifted protective film through the through hole on the upper plate 16 at the preset position in the box 15, the water pump starts and sprays high-pressure water flow through the spray head 18 to impact the surface of the lens, and uses the water pressure shear force and fluid penetration to peel off the lifted protective film. At the same time, the closed structure of the box 15 effectively restrains water splashing and guides the wastewater to be collected. Its working advantage is that the high-pressure water peeling technology replaces the traditional mechanical film peeling to avoid the contact of the clamping claws. The jet angle, pressure and duration of the spray head 18 can be dynamically adjusted through the PLC and flow sensor to adapt to the removal requirements of films with different viscosity strengths. The modular plate splicing design of the box 15 is convenient for disassembly and maintenance or expansion of the internal guide structure, and the linkage control of the spray cylinder 17 and the water pump realizes precise jet positioning and fast start and stop. Combined with the sealing of the box 16, it effectively reduces the impact of environmental humidity fluctuations on the production line. The overall system significantly improves the stripping efficiency and cleanliness while ensuring zero contact damage to the lens.

[0035] See also Figure 6 and Figure 8, the partition cylinder 21 drives the partition connecting rod 22 to slide along the arc groove of the cover plate 20, driving the partition 19 to rotate around the axis to realize the opening and closing of the through hole: when the suction cup 6 brings the lens close, the partition cylinder 21 retracts to make the partition 19 flip into the inner sink groove, and the through hole is fully opened for the lens to be placed vertically into the box 15; after the lens is positioned, the partition cylinder 21 extends to push the partition 19 to reset, and the partition 19 and the cover plate 20 form a dynamic sealing barrier to block the splashing droplets generated when the high-pressure water flow peels off the protective film; its working advantage lies in the mechanical structure of the arc groove and the cylinder linkage to achieve smooth transition and precise limit of the opening and closing of the partition 19, the composite sealing design of the cover plate 20 and the partition 19 not only ensures the stability of the water pressure inside the box 15, but also prevents the external environment particles from contaminating the lens surface, and the modular splicing box 15 and the upper plate 16 integrated design simplifies the disassembly and maintenance process of the partition assembly, and the overall system maintains high sealing while achieving efficient coordination of lens loading and unloading and spraying operations.

[0036] See also Figure 7 The rotating motor 24 drives the angular reducer 23 to reduce the rotation speed and increase the torque, driving the rotating shaft 25 and the negative pressure suction cup 26 to realize the transportation rotation. The negative pressure suction cup 26 uses the vacuum adsorption force to grab the lens and completes the rotation operation under the stable transmission of the output shaft of the angular reducer 23; its working advantage lies in the high-rigidity transmission structure of the angular reducer 23 to ensure the stable and uniform rotation of the rotating shaft 25. The direct connection design between the angular reducer 23 and the rotating motor 24 reduces the intermediate transmission loss and is suitable for high-speed start-stop and frequent reversing conditions. The contactless adsorption characteristics of the negative pressure suction cup 26 avoid the surface indentation caused by traditional clamps, which is particularly suitable for brittle material processing.

[0037] See also Figure 8 , a wastewater diversion channel is formed by using the through hole at the bottom of the box body 15 and the water tank 27 below: when the high-pressure water flow peels off the lens protective film, the wastewater mixed with the film layer debris is naturally discharged to the water tank 27 through the through hole under the action of gravity. A multi-stage filter screen can be set in the water tank 27 to achieve solid-liquid separation and circulating water precipitation purification; its working advantage lies in the vertical alignment design of the through hole and the water tank 27 to maximize the use of gravity to reduce the energy consumption of the water pump, and the circulating water outlet of the water tank 27 is connected to the external water pump through a pipeline to realize the closed-loop reuse of water resources, which significantly reduces the industrial water consumption. At the same time, the compact layout of the box body 15 and the water tank 27 saves the longitudinal space of the equipment, and the real-time collection function of wastewater is combined to ensure a high-cleanliness production line environment, which is suitable for the continuous operation of the optical element water stripping production line.

[0038] See also Figure 1The rotating seat 4 drives the two coaxially arranged horizontal connecting rods 5 to swing synchronously, and the vertical connecting rod 5 and the auxiliary rod 28 form a rigid right-angle frame. When the rotating seat 4 is rotated by external drive, the horizontal connecting rod 5 drives the auxiliary rod 28 to translate along a circular arc trajectory, and the vertical connecting rod 5 is fixed to the suction cup 6 at the end of the auxiliary rod 28 to maintain the posture; its working advantage lies in the symmetrical layout of the double horizontal connecting rods 5 to offset the eccentric load vibration caused by the rotating centrifugal force, the right angle of the vertical connecting rod 5 and the auxiliary rod 28 to strengthen the torsional rigidity of the structure, the extension design of the auxiliary rod 28 to expand the actuator's action radius without interfering with the internal space of the box 15, the modular articulation of the rotating seat 4 and the connecting rod 5 supports quick disassembly and maintenance, and the geometric constraints of the three-link 5 enable the actuator to always remain in a horizontal state during the rotation and lifting process.

[0039] The working principle of the present invention is as follows: The lens protective film tearing device is used in the following manner: the material box 9 loaded with lenses is transferred to the grabbing station through the conveyor frame 7; the multi-station robot unit moves downward, the first suction cup 6 grabs the lens 1, and then the multi-station robot unit retracts upward, the first suction cup 6 rotates to the top of the film warping part, and the lens 1 is placed in the film warping station. The multi-station robot unit is reset to restore the starting position, the cylinder 14 is started to drive the high-temperature metal sheet 13 to move forward, close to the edge of the protective film of the lens 1, where the protective film is curled up due to heat, and then the high-temperature metal sheet 13 is reset. At this time, the second suction cup 6 in the multi-station robot unit is located above the film-warping part, and the multi-station robot unit moves downward, and the second suction cup 6 grabs lens one of the film-warping part, while the first suction cup 6 can simultaneously grab lens two at the grabbing station, and the multi-station robot unit retracts upward and rotates so that the second suction cup 6 is located directly above the film-tearing unit. At this time, the first suction cup 6 is located directly above the film-warping part, and the multi-station robot extends downward, and the second suction cup 6 places lens one on the film-tearing part. At this time, the first suction cup 6 can simultaneously place lens two on the film-warping part, and the multi-station suction cup 6 returns to zero position, and the film-tearing part starts to work, and the spray head 18 sprays a high-pressure water flow of about 5MPa at lens one, while lens one rotates slowly to complete the peeling of the protective film. At this time, the third suction cup 6 is located above the film tearing unit. At this time, the second suction cup 6 is located above the film warping part, and the first suction cup 6 is located above the grabbing station. The multi-station robot unit extends downward, grabs the lens at the corresponding position, retracts upward, and rotates to the next station. The third suction cup 6 places the lens with the film torn off back to the material box, and repeats this process.

[0040] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A film tearing device for lens protective film, comprising a working platform (1), characterized in that: A working platform (1), one side of the working platform (1) is a feeding part for conveying lenses, an inner side of the feeding part is provided with a film-lifting part for lifting a lens protective film, the same side of the film-lifting part is provided with a film-tearing part for tearing off the lifted protective film, and a rotating manipulator for transferring lenses is provided between the feeding part, the film-lifting part and the film-tearing part; The rotary manipulator comprises a rotary bracket (2) fixed to a working platform (1), a lifting cylinder being installed on the side wall of the rotary bracket (2), a rotary cylinder (3) being installed on the top of the telescopic rod of the lifting cylinder via a connecting plate, a rotary seat (4) being installed on the rotary shaft of the rotary cylinder (3), three connecting rods (5) extending outwards of equal length being arranged on the rotary seat (4), a suction cup (6) being fixed at the end of the connecting rod (5), and the suction cup (6) being connected to an air pump via a pipeline.

2. The device for tearing off a protective film for a lens according to claim 1, characterized in that: The feeding section comprises a conveying frame (7) fixedly mounted on the working platform (1); a conveying motor (8) for driving a belt mounted on the conveying frame (7) is mounted on one side of the conveying frame (7); a plurality of material boxes (9) are placed on the belt; a placement groove for limiting the position of lenses is provided in the material box (9); and a suction cup (6) can be extended into the material box (9) to grab the lenses in the placement groove.

3. A film-tearing device for lens protective film according to claim 2, characterized in that: A plurality of stoppers (10) are installed on the inner side of the conveying frame (7) via a connecting plate, and the telescopic heads on the stoppers (10) can cooperate with the card slots at the bottom of the material box (9).

4. The device for tearing off a protective film for a lens according to claim 1, characterized in that: The film-lifting part comprises a film-lifting bracket (11) fixedly mounted on the working platform (1), the middle part of the film-lifting bracket (11) is a film-lifting seat (12) for supporting the lens, the suction cup (6) can move the lens to the film-lifting seat (12), the two sides of the film-lifting seat (12) are open, and two metal sheets (13) are installed on the two sides of the film-lifting seat (12) by means of slide rails and sliders, the metal sheets (13) are heated by electric heating, one side of the slider is fixedly connected to the telescopic rod of the driving cylinder (14) by a connecting plate, and the driving cylinder (14) drives the metal sheet (13) to move forward and approach the edge of the lens.

5. The device for tearing off a protective film for a lens according to claim 1, characterized in that: The film tearing unit comprises a box body (15) mounted on a working platform (1), the box body (15) being formed by splicing a plurality of plates, an upper plate (16) being mounted on the outer side of the box body (15) via a plurality of connecting rods, the upper plate (16) being provided with a through hole for inserting a lens, a spray cylinder (17) being mounted on one side of the box body (15) via a bracket, a spray head (18) being mounted on a telescopic rod of the spray cylinder (17) via a connecting plate, the spray head (18) being able to pass through a through hole on a side wall of the box body (15), and the spray head (18) being connected to a water pump via a pipeline.

6. The device for tearing off a protective film for a lens according to claim 5, characterized in that: An inner sink groove is provided in the middle of the upper plate (16), a cover plate (20) is provided above the partition plate (19) and is mounted on the upper edge of the upper plate (16), a space between the cover plate (20) and the inner sink groove is used to install the partition plate (19) that can block the through hole of the upper plate (16), the partition plate (19) is movably mounted in the inner sink groove of the upper plate (16) through an axis, a partition cylinder (21) is movably mounted on the upper plate (16) through an axis, a telescopic rod of the partition cylinder (21) is movably connected to a partition connecting rod (22) vertically disposed at the rear end of the partition (19), and an arc groove for moving the partition connecting rod (22) is provided on the cover plate (20).

7. A film-tearing device for lens protective film according to claim 6, characterized in that: An angular reducer (23) is mounted on the working platform (1) via a bracket, a rotating motor (24) is mounted on the angular reducer (23), a rotating shaft (25) is mounted on the output shaft of the angular reducer (23), and a negative pressure suction cup (26) is fixed to the top end of the rotating shaft (25).

8. The device for tearing off a protective film for a lens according to claim 7, characterized in that: A through hole is provided on the working platform (1) in the box body (15), and a water tank (27) is arranged on the bracket below the through hole.

9. The device for tearing off a protective film for a lens according to claim 1, characterized in that: The two connecting rods (5) located on both sides of the rotating seat (4) are located on the same straight line, the third connecting rod (5) is in a vertical state with the other two connecting rods (5), and an auxiliary rod (28) is fixed to the outer end of the connecting rod (5).

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