An automatic lens film tearing device for XR device production

Abstract

The application discloses an optical lens automatic film tearing device for XR device production and relates to the technical field of optical lens processing for XR device production.The device comprises a machine box and further comprises a film unwinding assembly for releasing adhesive tape, a film winding assembly for winding used adhesive tape, a film pasting assembly arranged on the top of the machine box and used for actively pasting the adhesive tape on a lens protection film, and a tensioning assembly arranged between the film pasting assembly and the film winding assembly.The device can automatically and accurately paste the adhesive tape on the lens protection film and tear off the lens protection film through the cooperative work of the film unwinding, film pasting, tensioning and film winding assemblies.The device can be integrated in the shell of an XR device automatic assembly production line, so that the film tearing process is carried out in a relatively clean and closed environment, the exposure time of the lens in the state without the protection film is greatly shortened, the risk of contamination and damage of the lens is fundamentally reduced, and manual operation is directly replaced, thereby significantly improving the production efficiency and the automation level.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical lens processing for XR device production, in particular to an automatic film tearing device for optical lenses in XR device production. BACKGROUND

[0002] XR (Extended Reality) devices such as AR (Augmented Reality) and VR (Virtual Reality) glasses are consumer electronics products that integrate advanced optical display and precision electronic components. Their production and assembly processes are highly complex, requiring high levels of automation, cleanliness, and precision.

[0003] Before the assembly of the optical module of an XR device, the surface of the core optical lens is usually covered with a layer of electrostatic adsorption protective film to prevent scratches or contamination during transportation and storage. During final assembly, the protective film must be removed accurately and cleanly.

[0004] Currently, the industry generally uses manual centralized film tearing and tray arrangement, and then manually feeds the arranged lenses into the automated production line. This approach has significant drawbacks: first, the optical surface of the lens is exposed for a long time between film tearing and assembly, which can easily attract dust or cause scratches, resulting in irreversible damage and lower yields. Second, manual operation is inefficient and costly, and has become a key bottleneck restricting the automation level and production efficiency of the entire production line. Therefore, developing a device that can seamlessly integrate into an automated production line and complete lens film tearing in a controlled environment is urgently needed and has important significance for improving the quality, efficiency, and automation level of XR device production. SUMMARY

[0005] The purpose of the present application is to provide an automatic film tearing device for optical lenses in XR device production, which aims to replace manual operation and achieve stable and reliable automated film tearing. The device can be integrated into a dust-free production line environment and effectively protect the cleanliness of the lenses during film tearing, significantly improving production quality and efficiency.

[0006] To solve the above technical problems, the technical solution adopted by the present application is:

[0007] The application provides an optical lens automatic film tearing device for XR device production, which comprises a machine box; further comprising: a unwinding assembly for releasing adhesive tape; a winding assembly for winding used adhesive tape; a tape sticking assembly arranged on the top of the machine box for actively attaching the adhesive tape on the lens protective film; a tensioning assembly arranged between the tape sticking assembly and the winding assembly for passively regulating the tension on the adhesive tape traction path; a plurality of guide rollers are arranged and are rotationally connected in the interior of the machine box; the tape sticking assembly comprises a mounting block fixedly connected to the top of the machine box, a supporting block fixedly connected to one side of the mounting block, and a movable block arranged on the side of the mounting block close to the supporting block, the movable block and the top of the supporting block are at the same horizontal height; the supporting block and the top of the movable block are both provided with a rounded corner on the side away from each other; the adhesive tape passes through the supporting block and the movable block in turn from the traction direction, and the adhesive tape in the region between the supporting block and the movable block has the sticky side upward.

[0008] By the cooperative work of the unwinding, tape sticking, tensioning and winding assemblies, the adhesive tape can be automatically and accurately attached to and torn from the lens protective film, the device can be integrated into the shell of the XR device automatic assembly line, the film tearing process is carried out in a relatively clean and closed environment, the exposure time of the lens without protective film is greatly shortened, the risk of lens contamination and damage is fundamentally reduced, and manual operation is directly replaced, thereby significantly improving the production efficiency and automation level.

[0009] Further improvement of the technical scheme of the application is that the tape sticking assembly further comprises a strip-shaped groove opened on the mounting block, a gas cylinder fixedly connected to the side of the mounting block away from the supporting block, a push block fixedly connected to the end of the piston rod of the gas cylinder, a guide rod fixedly connected in the interior of the strip-shaped groove, a adjusting block slidingly connected to the exterior of the guide rod, and the movable block is fixedly connected to the top of the adjusting block; the guide rod is sleeved with a return spring; the push block is in contact with the adjusting block.

[0010] By adding the movable block mechanism driven by the gas cylinder and reset by the spring, the adhesive tape attaching process is changed from direct face-to-face large-area planar contact to linear progressive rolling and sticking from one side edge, which can more effectively ensure the full-length uniform adhesion between the adhesive tape and the lens protective film without air bubbles, and significantly improve the firmness and reliability of the sticking.

[0011] Further improvement of the technical scheme of the application is that the top of the machine box is fixedly connected with a speed control cylinder, a piston plate is slidingly connected between the inner walls of the speed control cylinder, a linkage rod is fixedly connected to the side of the adjusting block away from the push block, and the linkage rod is fixedly connected with the piston plate; an air inlet pipe and an air outlet pipe are arranged on the speed control cylinder, a one-way valve is arranged in the air inlet pipe to unidirectionally guide the air from the outside to the speed control cylinder, and a one-way valve is arranged in the air outlet pipe to unidirectionally guide the air from the speed control cylinder to the outside; the pipe diameter of the air inlet pipe is smaller than that of the air outlet pipe.

[0012] The technical scheme has the advantages that a pneumatic damping system composed of a speed control cylinder, a piston plate and a flow limiting air pipe is integrated on the reset path of the movable block, and stable and adjustable speed control is provided for the core action of the film tearing process, movable block reset and the consequent tape retraction, the pure mechanical damping mechanism can ensure that the movable block moves at a constant speed or at a controlled slow speed under the driving of the reset spring, thereby controlling the peeling force acting on the protective film at a stable and gentle level, and fundamentally avoiding the risk of the protective film being suddenly pulled off or even broken in the middle due to too fast reset speed and instantaneous too large peeling force, and greatly improving the success rate and process reliability of the film tearing action.

[0013] Further improvement of the technical scheme of the application is that the tensioning assembly includes a fixed plate, a slide rod is slidably connected to the top of the fixed plate, a roller seat is fixedly connected to the top of the slide rod, a limiting block is fixedly connected to the bottom of the slide rod and penetrates to the lower side of the fixed plate, and a tensioning roller is rotatably connected between the inner sides of the roller seat; a tensioning spring is sleeved outside the slide rod and between the roller seat and the fixed plate; three auxiliary rollers are rotatably connected inside the cabinet and are arranged in a right-angled triangle.

[0014] The technical scheme has the advantages that the independent tensioning assembly composed of the tensioning roller, the slide rod, the tensioning spring and the auxiliary rollers creates a dynamically responsive elastic tensioning hub, coordinates the long-distance tape conveying and the local film tearing action, passively and in real time absorbs or compensates for the slight change in the length of the tape caused by the movement of the movable block by using the extension of the tensioning spring, thereby ensuring that the tape tension acting on the protective film remains stable and controllable throughout the entire attachment and film tearing cycle, not only providing a smooth path basis for bidirectional traction and effectively preventing the winding problem caused by the participation of the already wound tape in complex actions, but also enabling the take-up and pay-off assembly to perform substantial and efficient tape renewal during the intermittent period of the film tearing action, thereby improving the working reliability and rhythm efficiency of the entire system.

[0015] Further improvement of the technical scheme of the application is that a through hole is formed in the mounting block, a suction nozzle is fixedly installed at the mouth of the through hole, a pipe joint is arranged on the side of the through hole away from the suction nozzle, and the pipe joint is in communication with the air inlet pipe; an extension pipe is arranged on the air outlet pipe, and the end of the extension pipe away from the air outlet pipe is outside the cabinet; and a filter screen is fixedly connected inside the speed control cylinder.

[0016] By using the air flow generated by the speed control cylinder during operation, the film tearing area is communicated with the negative pressure cavity of the speed control cylinder through the pipeline, so that a soft adsorption air flow can be continuously generated in the film tearing area during the film tearing process, and the tiny film debris or dust that may float up can be directly sucked away from the working area and discharged to a remote place through the pipeline.

[0017] Further improvement of the technical scheme of the present application is that the feedback sensor is fixedly installed on the side of the mounting block close to the support block, the feedback sensor is a reflection type photoelectric sensor, the light source direction of the feedback sensor is horizontal and parallel to the plane of the side of the mounting block close to the support block, and the light source direction of the feedback sensor is at the same height as the round corner of the movable block; the winding assembly, the unwinding assembly, the air cylinder and the feedback sensor are electrically connected with the external controller.

[0018] By installing the reflection type photoelectric sensor on the mounting block and connecting it with the external controller, a real-time and automatic quality feedback and control closed loop is established for the film tearing process, the system can instantly judge whether each film tearing action is successful or not, and automatically coordinate the actions of the winding, unwinding and attaching driving assemblies based on the signal.

[0019] Further improvement of the technical scheme of the present application is that the movable block is rotatably connected with a rotating shaft through a torsion spring, the rotating shaft penetrates through the two sides of the movable block, the outer part of the rotating shaft is fixedly connected with a lever, and the end of the lever is rounded; the two ends of the lever are fixedly connected with auxiliary blocks, the auxiliary blocks are arc-shaped and one corner is rounded; the two sides of the movable block are fixedly connected with limiting frames.

[0020] Further improvement of the technical scheme of the present application is that the support block and the movable block are provided with installation grooves on the side away from the round corner at the top, and the movable block is detachably connected with a smooth block in the installation groove at the top; the support block is detachably connected with an anti-skid block in the installation groove at the top; the smooth block and the anti-skid block are flexible blocks.

[0021] By setting the anti-skid block on the top of the support block, a stable and anti-slip contact base is provided for the adhesive tape at the critical moment of initial attachment and final removal, so as to ensure that the adhesive tape does not slide unexpectedly at the key stress point, and the starting point of the adhesive tape is accurate and the end point of the removal is complete; by setting the smooth block on the top of the movable block, the sliding friction resistance on the back of the adhesive tape is minimized when the movable block moves, so that the adhesive tape can be smoothly and stably dragged and expanded by the movable block, and the adhesive tape is prevented from being stretched, wrinkled or attached unevenly due to excessive friction.

[0022] Further improvement of the technical scheme of the present application is that a flow regulating valve is arranged on the air inlet pipe.

[0023] The technical scheme is adopted, the flow regulating valve is additionally arranged on the air inlet pipe on the basis of the air damping system, so that the device reset speed and the film tearing speed directly related to the device reset speed are changed from a preset value determined by the fixed pipe diameter to a variable value which can be adjusted in real time by manual or control system. By changing the opening degree of the regulating valve, the air inlet resistance can be finely controlled, so that the reset movement speed of the movable block is adjusted, so that the operator can flexibly optimize and set the most suitable film tearing speed according to the characteristics of different lens protective films or specific process requirements, and the adaptability and process controllability of the device to different production requirements are enhanced.

[0024] Due to the adoption of the above technical scheme, the technical progress achieved by the present application relative to the prior art is:

[0025] 1. The present application provides an automatic film tearing device for optical lenses in XR equipment production, which can automatically and accurately attach and tear off the protective film of the lens through the coordinated work of the unwinding, adhesive application, tensioning and winding functional components. The device can be integrated into the shell of the automatic assembly line of the XR equipment, so that the film tearing process is carried out in a relatively clean and closed environment, greatly shortening the exposure time of the lens without protective film, fundamentally reducing the risk of lens contamination and damage, and directly replacing manual operation, significantly improving production efficiency and automation level.

[0026] 2. The present application provides an automatic film tearing device for optical lenses in XR equipment production, which converts the adhesive application process of the adhesive tape from direct full-area planar contact to linear progressive rolling and sticking from one side edge by additionally arranging a movable block mechanism driven by a pneumatic cylinder and reset by a spring. This working mode can more effectively ensure uniform adhesion between the adhesive tape and the protective film of the lens over the full length range without air bubbles, significantly improving the firmness and reliability of the sticking.

[0027] 3. The present application provides an automatic film tearing device for optical lenses in XR equipment production, which integrates a pneumatic damping system composed of a speed control cylinder, a piston plate and a flow limiting air pipe on the reset path of the movable block, to provide stable and adjustable speed control for the core action of the film tearing process, i.e. the reset of the movable block and the subsequent withdrawal of the adhesive tape. This pure mechanical damping mechanism can ensure that the movable block maintains uniform or controlled slow movement under the driving of the reset spring, thereby controlling the peeling force acting on the protective film at a stable and gentle level, fundamentally avoiding the risk of the protective film being suddenly pulled off or even broken in the middle due to excessive reset speed and instantaneous excessive peeling force, greatly improving the success rate and process reliability of the film tearing action.

[0028] 4.The application provides an automatic film tearing device for optical lens production of XR equipment, which utilizes the airflow generated by the speed control cylinder during operation, communicates the film tearing area with the negative pressure cavity of the speed control cylinder through a pipeline, so that a soft suction airflow can be continuously generated in the film tearing area, the tiny film debris or dust that may float is directly sucked away from the working area, and is discharged to a remote place through the pipeline. This design does not need to additionally increase an independent air suction device, realizes the reuse and efficiency improvement of system functions, and effectively maintains the local cleanliness of the film tearing station in a simple and reliable manner.

[0029] 5.The application provides an automatic film tearing device for optical lens production of XR equipment, which installs a pair of photoelectric sensors on the mounting block and connects with an external controller to establish a real-time and automatic quality feedback and control loop for the film tearing process. The system can immediately judge the success or failure of each film tearing action, and automatically coordinate the actions of the winding, unwinding and attaching drive assemblies based on the signal. BRIEF DESCRIPTION OF DRAWINGS

[0030] The application will be further described below with reference to the drawings.

[0031] Figure 1 It is a structural schematic view of the whole application in a state where the movable block and the support block are far away from each other.

[0032] Figure 2 It is a structural schematic view of the whole application in a state where the movable block and the support block are close to each other.

[0033] Figure 3 It is a three-dimensional structural schematic view of the back of the whole application.

[0034] Figure 4 It is a schematic view of the installation structure of the speed control cylinder of the application.

[0035] Figure 5 It is a structural schematic view of the adhesive attaching assembly of the application in a state where the movable block and the support block are far away from each other.

[0036] Figure 6 It is a structural schematic view of the adhesive attaching assembly of the application in a state where the movable block and the support block are close to each other.

[0037] Figure 7 It is a sectional view of the speed control cylinder of the application.

[0038] Figure 8 It is a structural schematic view of the tensioning assembly of the application.

[0039] Figure 9 It is a structural schematic view of two states of the adhesive tape tearing process of the application.

[0040] Figure 10 It is a structural schematic view of three states of the film tearing process of the application.

[0041] Figure 11 For the invention Figure 9 Enlarged view of A.

[0042] In the figure: 1, case; 2, unwinding assembly; 3, winding assembly; 4, rubberizing assembly; 401, mounting block; 402, support block; 403, strip-shaped groove; 404, guide rod; 405, adjusting block; 406, air cylinder; 407, push block; 408, movable block; 501, speed control cylinder; 502, piston plate; 503, linkage rod; 504, air inlet pipe; 505, air outlet pipe; 506, one-way valve; 507, filter screen; 508, suction nozzle; 6, tensioning assembly; 601, fixed plate; 602, slide rod; 603, roller seat; 604, tensioning roller; 605, tensioning spring; 606, auxiliary roller; 701, rotating shaft; 702, lever; 703, auxiliary block; 704, limiting frame; 8, feedback sensor; 9, smooth block; 10, anti-skid block; 11, guide roller. DETAILED DESCRIPTION

[0043] The application will be further described in detail below in conjunction with examples.

[0044] Example 1

[0045] As Figures 1-11 shown, the application provides an automatic film tearing device for optical lenses for XR device production, comprising a case 1; further comprising: an unwinding assembly 2 for releasing adhesive tape; a winding assembly 3 for winding used adhesive tape; a rubberizing assembly 4 arranged at the top of the case 1 for actively attaching adhesive tape on lens protective film; a tensioning assembly 6 arranged between the rubberizing assembly 4 and the winding assembly 3 for passively regulating the tension on the adhesive tape traction path; a plurality of guide rollers 11 are arranged and rotationally connected inside the case 1; the rubberizing assembly 4 comprises a mounting block 401 fixedly connected at the top of the case 1, a support block 402 fixedly connected to one side of the mounting block 401, a movable block 408 arranged on the side of the mounting block 401 close to the support block 402, the movable block 408 and the top of the support block 402 are at the same horizontal height; the top of the support block 402 and the top of the movable block 408 are arranged with rounded corners; the adhesive tape passes through the support block 402 and the movable block 408 in turn from the traction direction, and the adhesive tape in the region between the support block 402 and the movable block 408 has the sticky side upward.

[0046] In the embodiment, through the cooperative work of unwinding, adhesive application, tensioning, and winding of each functional component, the adhesive tape can be automatically and accurately attached and torn off the lens protective film. The device can be integrated in the shell of the XR equipment automatic assembly production line, so that the film tearing process is carried out in a relatively clean and closed environment, greatly shortening the exposure time of the lens without protective film, fundamentally reducing the risk of lens contamination and damage, and directly replacing manual operation, significantly improving production efficiency and automation level.

[0047] The entire film tearing process is completed based on the cooperation of an external clamping jig (not shown in the figure, which belongs to the existing equipment of the production line) and the device. The specific working principle is as follows:

[0048] First, the external clamping jig holds the XR optical lens with the protective film and moves it to the top of the adhesive application component 4 of the device case 1. Then, the jig drives the lens to move vertically downward, so that the protective film on the lower surface of the lens contacts and is pressed against the adhesive tape (with the adhesive surface facing upward) laid on the top of the support block 402 and the movable block 408 of the adhesive application component 4. After confirming the adhesion (which can be triggered by an independently set contact sensor), the external jig keeps the lens position fixed.

[0049] At this time, the adhesive tape is pulled to move the protective film adhered to it, thereby peeling off the protective film and completing the film tearing. After the peeling is completed, the adhesive tape carries the peeled protective film, which moves along the path composed of multiple guide rollers 11 under the regulation of the tensioning component 6 and the traction of the winding component 3, and finally the waste film is wound and collected. Thus, a complete automatic film tearing process is completed, the clamping jig can move the optical lens with the torn film to the next assembly station, and the device is ready for the next film tearing.

[0050] In the scheme, the winding component 3 and the unwinding component 2 have the same structure, both including a winding motor, a speed reducer, and a reel. The output end of the winding motor is connected to the speed reducer, and the output shaft of the speed reducer is connected to the reel. The winding motor can drive the reel to rotate, thereby realizing winding and unwinding.

[0051] Embodiment 2

[0052] As Figure 5 , Figure 6 and Figure 9As shown, on the basis of Embodiment 1, the application provides a technical solution: preferably, the adhesive assembly 4 further comprises a strip-shaped slot 403 formed on the mounting block 401, the mounting block 401 is fixedly connected with a gas cylinder 406 away from the supporting block 402, the piston rod end of the gas cylinder 406 is fixedly connected with a push block 407, the inside of the strip-shaped slot 403 is fixedly connected with a guide rod 404, the outside of the guide rod 404 is slidingly connected with an adjusting block 405, and a movable block 408 is fixedly connected to the top of the adjusting block 405; the guide rod 404 is sleeved with a return spring; the push block 407 is in contact with the adjusting block 405.

[0053] The above scheme may cause large-area planar contact between the lens protective film and the adhesive tape when tearing the film, and this mode has optimization space in the uniformity of attachment. The adhesion between the adhesive tape and the protective film may be uneven in some areas due to local pressure or micro-bubbles, which may cause the adhesive tape and the protective film to separate during film tearing.

[0054] In this embodiment, by adding the movable block 408 mechanism driven by the gas cylinder 406 and spring return, the adhesive tape attachment process is changed from direct face-to-face large-area planar contact to linear progressive rolling and sticking from one side edge. This working mode can more effectively ensure uniform adhesion between the adhesive tape and the lens protective film in the full-length range without bubbles, and significantly improves the firmness and reliability of the attachment.

[0055] Referring to Figure 10 , three states of the film tearing process are shown, wherein the arrow direction in the figure is the moving direction of the movable block 408, the leftmost figure is that the lens is just placed on the supporting block 402, the movable block 408 moves away from the supporting block 402, the middle figure is the state of completing the attachment of the adhesive tape and the protective film, after the attachment is completed, the movable block 408 moves towards the supporting block 402, and the rightmost figure is the state of tearing the protective film to only a small area, at this state, the lens can be completely torn off by removing the remaining part through an external clamping tool.

[0056] Specifically, when the attaching action is started, the lens presses the top of the support block 402 and the top of the movable block 408, and initially the movable block 408 is in a position close to the support block 402, and the two form a small sticking surface, and the area is first attached; then the piston rod of the air cylinder 406 is controlled to extend outward, driving the push block 407 at the end to move forward, the push block 407 pushes the adjusting block 405 to overcome the elastic force of the return spring, and drives the movable block 408 to move away from the support block 402; in this process, since one side of the adhesive tape is pressed by the support block 402 and the lens, this side will not be pulled, and the other side, which is close to the movable block 408, is pulled by the movable block 408, so that the adhesive tape is gradually and smoothly rolled and attached to the entire surface of the protective film from the initial attachment point, and the adhesive tape is pulled in the opposite direction (opposite to the working direction of the winding and unwinding assembly 2) by a distance (the distance is provided by the tensioning assembly 6, and the tensioning assembly 6 accumulates potential energy at the same time);

[0057] After complete attachment, the push block 407 is controlled to be retracted by the air cylinder 406, and the push block 407 is separated from the adjusting block 405, at this time the compressed return spring releases energy, and the movable block 408 and the adjusting block 405 start to move back to the support block 402 under the action of the return spring, and as the movable block 408 resets, the support of the bottom of the adhesive tape is removed, and at the same time, the tensioning assembly 6 which has stored potential energy starts to release energy, generating a continuous recovery force to pull the adhesive tape in the opposite direction (in the same direction as the working direction of the winding and unwinding assembly 2), and this pulling force acts on the adhesive tape which has been fully adhered to the protective film, so that the protective film is smoothly and gradually peeled off the surface of the lens from the side away from the support block 402, until only the small area initially pressed by the lens on the top of the support block 402 is left; finally, the lens is lifted, and the final separation of the protective film and the lens is completed.

[0058] Embodiment 3

[0059] As shown in Figure 4 , Figure 5 and Figure 7 , on the basis of embodiment 2, the application provides a technical solution: preferably, the top of the case 1 is fixedly connected with a speed control cylinder 501, a piston plate 502 is slidably connected between the inner walls of the speed control cylinder 501, a linkage rod 503 is fixedly connected to the side of the adjusting block 405 away from the push block 407, and the linkage rod 503 is fixedly connected with the piston plate 502; the speed control cylinder 501 is provided with an air inlet pipe 504 and an air outlet pipe 505, the air inlet pipe 504 is provided with a one-way valve 506 which unidirectionally conducts from the outside to the speed control cylinder 501, and the air outlet pipe 505 is provided with a one-way valve 506 which unidirectionally conducts from the speed control cylinder 501 to the outside; the pipe diameter of the air inlet pipe 504 is smaller than that of the air outlet pipe 505.

[0060] In the above scheme, the movable block 408 mainly relies on the elastic force of the reset spring to drive the rapid reset after the attachment is completed. The initial acceleration of this reset mode relying solely on the spring release is relatively large, and the speed is difficult to maintain uniform, which is easy to cause the movable block 408 to rebound instantaneously. This rapid and sudden movement will transmit a large impact force to the protective film through the adhesive tape instantaneously, so that the protective film bears a too high instantaneous stress when it is peeled off, and is extremely easy to tear or break at the weak part, resulting in tearing film failure.

[0061] In the present embodiment, by integrating a pneumatic damping system composed of a speed control cylinder 501, a piston plate 502 and a flow limiting air pipe on the reset path of the movable block 408, a stable and adjustable speed control is provided for the core action of the tearing film process, i.e. the reset of the movable block 408 and the subsequent withdrawal of the adhesive tape. The pure mechanical damping mechanism can ensure that the movable block 408 maintains a uniform or controlled slow movement under the driving of the reset spring, so as to control the peeling force acting on the protective film at a stable and gentle level, thereby fundamentally avoiding the risk of the protective film being suddenly pulled off or even broken in the middle due to the too fast reset speed and the too large instantaneous peeling force, and greatly improving the success rate and process reliability of the tearing film action.

[0062] When the movable block 408 is driven to reset (moves towards the support block 402) by the reset spring, the linkage rod 503 fixedly connected to the adjusting part of the movable block 408 synchronously drives the piston plate 502 in the speed control cylinder 501 to move to one side. The movement of the piston plate 502 will compress the air in the chamber on one side. Since the one-way valve 506 allowing only gas to be discharged is arranged on the air outlet pipe 505, the compressed air can only be discharged from the pipeline. The key is that the pipe diameter of the air inlet pipe 504 is designed to be smaller than that of the air outlet pipe 505, and the one-way valve 506 allowing only external air to flow in is arranged on the air inlet pipe 504. Therefore, when the piston plate 502 moves to form negative pressure in the chamber on the other side, the rate of external air supplement through the air inlet pipe 504 with small pipe diameter is limited. This air inlet resistance is converted into a damping force acting on the movement of the piston plate 502. The damping force acts on the movable block 408 through the linkage rod 503 in the opposite direction, thereby effectively inhibiting and stabilizing the movement speed of the movable block 408 under the action of the reset spring, so that the uniform and gentle withdrawal of the adhesive tape and the peeling process of the protective film can be carried out.

[0063] It should be particularly pointed out that the pipe diameter of the air outlet pipe 505 can match the air pressure change caused by the movement of the piston plate 502 during the pushing out process of the air cylinder 406. Therefore, the piston plate 502 will not be speed limited by the air pressure during the pushing out process of the air cylinder 406.

[0064] As Figure 1 , Figure 2 and Figure 8As shown, preferably, the tensioning assembly 6 comprises a fixed plate 601, a sliding rod 602 is slidingly connected to the top of the fixed plate 601, a roller seat 603 is fixedly connected to the top of the sliding rod 602, the bottom of the sliding rod 602 penetrates to the lower side of the fixed plate 601 and is fixedly connected with a limiting block, and a tensioning roller 604 is rotatably connected between the inner sides of the roller seat 603; a tensioning spring 605 is sleeved outside the sliding rod 602 and between the roller seat 603 and the fixed plate 601; three auxiliary rollers 606 are rotatably connected inside the cabinet 1 and are arranged in a right-angled triangle.

[0065] Considering that in the automatic film tearing process, the adhesive tape needs to be reversely pulled by the moving block 408 when being attached and then be forwardly pulled back when being reset, the adhesive tape path needs to have flexible bidirectional pulling capacity. However, the completed winding adhesive tape is hard and uneven in thickness due to the adhered protective film, and if it is directly released reversely by the winding roller, it is easy to be stuck, wound or even broken;

[0066] In the embodiment, by setting the independent tensioning assembly 6 composed of the tensioning roller 604, the sliding rod 602, the tensioning spring 605 and the auxiliary rollers 606, a dynamic response elastic tensioning hub is created, the long-distance adhesive tape conveying is matched with the local film tearing action, the tensioning spring 605 is used to passively and timely absorb or compensate the slight length change of the adhesive tape caused by the movement of the moving block 408, so as to ensure that the adhesive tape tension acting on the protective film is always stable and controllable in the whole attachment and film tearing cycle, not only to provide a smooth path basis for bidirectional pulling, effectively prevent the winding problem caused by the direct participation of the completed winding adhesive tape in the complex action, but also to enable the winding and unwinding assembly 2 to be greatly and efficiently renewed during the intermittent period of the film tearing action, thereby improving the working reliability and rhythm efficiency of the whole system.

[0067] When the moving block 408 performs the attachment action and moves outward, it will generate a reverse pulling force on the tensioning roller 604 through the adhesive tape, which overcomes the pre-tightening force of the tensioning spring 605, pulls the roller seat 603 to slide along the sliding rod 602 to the fixed plate 601, and the tensioning spring 605 is compressed to store elastic potential energy. This process absorbs the excess adhesive tape pulled out by the moving block 408 and maintains the tension of the working section;

[0068] Then in the film tearing stage, the moving block 408 is reset, and the constraint of the adhesive tape is relaxed. At this time, the compressed tensioning spring 605 releases potential energy, pushes the roller seat 603 and the tensioning roller 604 to move reversely, thereby actively and stably pulling back the adhesive tape and providing the uniform forward pulling force required to tear the protective film from the lens.

[0069] During the whole process, the three auxiliary rollers 606 arranged in a right-angled triangle constitute a stable guiding frame, ensuring that the adhesive tape is strictly constrained in its path in the region of the tensioning assembly 6, whether it is running forward or backward, and no deviation, slackening or interference with the mechanism occurs, thus ensuring the accuracy of the tension transmission and the smoothness of the action; after the film tearing is completed, the winding and unwinding assembly 2 is started, the new adhesive tape is conveyed, and the tensioning assembly 6 is reset under the action of the spring, preparing for the next cycle.

[0070] Embodiment 4

[0071] As shown in Figure 4 , Figure 6 and Figure 7 , on the basis of Embodiment 3, the application provides a technical solution: preferably, a through hole is formed in the mounting block 401, a suction nozzle 508 is fixedly installed at the mouth position of the through hole, a pipe joint is arranged on the side of the through hole away from the suction nozzle 508, and the pipe joint is in communication with the air inlet pipe 504; an extension pipe is arranged on the air outlet pipe 505, and one end of the extension pipe away from the air outlet pipe 505 is located outside the case 1; the inside of the speed control cylinder 501 is fixedly connected with a filter screen 507.

[0072] During the storage and handling of the optical lens before film tearing, the protective film on the surface of the lens may adsorb a small amount of dust or particles in the environment. When the lens is pressed down at the film tearing station, if these attachments exist between the adhesive tape and the protective film, they will form an isolation point, causing local adhesion to be not firm, resulting in bubbles or directly becoming a weak point for film tearing, affecting the integrity and success rate of film tearing, and too high dust concentration also has the risk of adhering to the lens;

[0073] In this embodiment, the airflow generated by the speed control cylinder 501 during operation is connected to the negative pressure cavity of the speed control cylinder 501 through a pipeline, so that a soft suction airflow is continuously generated in the key area (the suction nozzle 508) during the film tearing process, which can directly suck away the small film debris or dust that may float in the working area, and discharge it to a remote place through the pipeline. This design does not need to increase an independent air suction device, realizes the reuse and efficiency improvement of the system function, and effectively maintains the local cleanliness of the film tearing station in a simple and reliable way.

[0074] When the movable block 408 is driven to start resetting the film tearing, the linkage rod 503 fixed thereon synchronously pulls the piston plate 502 in the speed control cylinder 501 to generate a negative pressure (suction force) in the side chamber of the piston plate 502, and the negative pressure is transmitted to the suction nozzle 508 through the air inlet pipe 504 and the pipeline joint connected thereto, the through hole, the suction nozzle 508 facing the film tearing area, so as to reliably suck the fine particulate matters (such as film scraps and dust) possibly raised near the film tearing area, and the inhaled dust-containing air flows through the through hole and the pipeline into the speed control cylinder 501, and then is discharged to the designated area outside the cabinet 1 through the air outlet pipe 505 and the extension pipe, so as to avoid polluting the inside of the equipment.

[0075] As shown in Figure 4 , Figure 5 and Figure 6 , preferably, the mounting block 401 is fixedly installed with a feedback sensor 8 on the side close to the support block 402, the feedback sensor 8 is a reflection type photoelectric sensor, the light source direction of the feedback sensor 8 is horizontal and parallel to the plane of the side of the mounting block 401 close to the support block 402, and the light source direction of the feedback sensor 8 is at the same height as the rounded corner of the movable block 408; the winding assembly 3, the unwinding assembly 2, the air cylinder 406 and the feedback sensor 8 are electrically connected with an external controller.

[0076] In the embodiment, by installing the reflection type photoelectric sensor on the mounting block 401 and connecting it with the external controller, a real-time and automatic quality feedback and control closed loop is established for the film tearing process, the system can instantly judge whether each film tearing action is successful (i.e. whether the protective film is attached to the adhesive tape) or not, and automatically coordinate the actions of the winding, unwinding and attaching driving assemblies based on the signal;

[0077] However, considering that the protective film used for optical lenses is usually very thin and transparent or high-transmittance material, when such thin film passes through the detection light beam of the sensor in a flat state, the shielding, reflecting or absorbing effect of the film on light is extremely weak, resulting in that the signal change received by the sensor is very small and the signal-to-noise ratio is low;

[0078] To solve the above problems, the sensor layout is improved, the horizontal light source path of the light barrier photoelectric sensor is arranged at the same height as the rounded corner part at the top of the movable block 408. When the peeled protective film moves to this position with the adhesive tape, it will be naturally lifted under the guidance of the rounded corner of the movable block 408, forming a stable bending area. Compared with the flat state, the film produces more significant refraction, scattering and composite shielding effect on the horizontal light beam in this bending area, thereby greatly enhancing the optical visibility. The difference between the light signal intensity received by the sensor in the film passing state and the film non-passing state becomes large and stable enough, thereby greatly improving the detection sensitivity, accuracy and anti-interference ability, effectively overcoming the inherent limitations of transparent film detection; for better understanding, please refer to Figure 5 and Figure 6 wherein, Figure 5 shows that the adhesive tape is attached to the protective film, but has not been peeled off, so the adhesive tape has no protective film at the rounded corner position of the movable block 408, and Figure 6 is the state of the peeled protective film. As can be seen from the figure, the edge part of the protective film will shield the light source of the feedback sensor 8, and the shielding position is curved from the rounded corner, so it can be more easily collected.

[0079] Embodiment 5

[0080] As shown in Figure 9 and Figure 11 , on the basis of embodiment 4, the application provides a technical solution: preferably, the upper part of the movable block 408 is rotatably connected with a rotating shaft 701 through a torsional spring, the rotating shaft 701 penetrates through both sides of the movable block 408, the outer part of the rotating shaft 701 is fixedly connected with a lever 702 in a symmetrical manner, and the end part of the lever 702 is rounded; both ends of the lever 702 are fixedly connected with an auxiliary block 703, the auxiliary block 703 is arc-shaped, and one corner is rounded; both sides of the movable block 408 are fixedly connected with a limiting frame 704, which is used for limiting the lever 702, so that in the initial state, the chord of the auxiliary block 703 is parallel to the direction of the light source of the feedback sensor 8 and will not shield the light source.

[0081] In this embodiment, on the basis of the original optical detection, a set of pure mechanical triggering and shielding mechanism is added, which provides a redundant and reliable judgment mechanism for the passing state of the transparent protective film. The design triggers a shielding event through the physical action of the protective film itself in a specific path, and forms a mechanical and optical double verification with the change of the optical signal of the photoelectric sensor.

[0082] In the initial state, the rotating shaft 701 rotatably connected to the upper part of the movable block 408 through the torsional spring makes the two levers 702 fixedly connected in a symmetrical manner and the arc-shaped auxiliary block 703 at the end part remain in a balanced position which does not shield the horizontal light path of the feedback sensor 8, that is, the chord of the arc-shaped auxiliary block 703 is parallel to the light source.

[0083] When the film tearing is successful (in the film tearing process), the adhesive tape with the protective film is pulled through the rounded corner area on the top of the movable block 408, the protective film is forced to bend, and this bending state significantly enhances the bending strength (i.e. stiffness) of the film in the plane, so as to overcome the weak torsional force of the torsion spring and push the light-weight lever 702 to rotate around the rotating shaft 701;

[0084] The rotation of the lever 702 directly drives the synchronous movement of the arc-shaped auxiliary block 703 at the end of the lever 702, and swings from the initial position to the horizontal light path of the sensor, forming a deterministic physical obstruction, which causes the photoelectric sensor to generate a strong and non-negotiable signal jump (such as from on to off), which is recorded by the controller as clear evidence of film passing;

[0085] With the continuous advancement of the adhesive tape, the protective film is separated from the contact with the lever 702, and the lever 702 and the auxiliary block 703 are automatically reset to the initial non-obstruction position under the restoring torque of the torsion spring, ready for the next detection; if the film tearing fails and no film passes, the lever 702 does not move, and the light path is not physically obstructed, and only a possible weak optical signal change is relied on for judgment, at which time the system can combine the difference between the two signals for high-confidence fault determination.

[0086] As shown in Figure 4 and Figure 5 Preferably, mounting grooves are formed on the top of the support block 402 and the side away from the rounded corner of the movable block 408, and a smooth block 9 is detachably connected in the mounting groove on the top of the movable block 408; a non-slip block 10 is detachably connected in the mounting groove on the top of the support block 402; the smooth block 9 and the non-slip block 10 are both flexible blocks.

[0087] In this embodiment, by setting the non-slip block 10 (preferably a rubber block with high friction coefficient) on the top of the support block 402, the purpose is to provide a stable and anti-slip contact basis for the adhesive tape at the critical moment of initial attachment and final removal, ensuring that the adhesive tape does not accidentally slip at the key stress point, making the starting point of sticking accurate and the end point of tearing complete; and by setting the smooth block 9 (preferably a polyurethane block with low friction coefficient) on the top of the movable block 408, the purpose is to minimize the sliding friction resistance on the back of the adhesive tape when the movable block 408 moves, so that the adhesive tape can be smoothly and stably dragged and expanded by the movable block 408, avoiding stretching, wrinkling or uneven sticking of the adhesive tape due to excessive friction;

[0088] Further, both of them are made of flexible materials (such as polyurethane, rubber), the fundamental purpose is to avoid hard metal or plastic parts directly contact and possibly scratch the optical lens or protective film; flexible surface can adapt to the lens surface small uneven, provide uniform contact pressure, play a buffering role in the process of pressing and tearing, greatly reduce the risk of damage to expensive optical elements;

[0089] Further, the smooth block 9 and the anti-skid block 10 are independent blocks detachably connected in the mounting groove, the connection mode can be screw connection or buckle clamping connection, the smooth block 9 and the anti-skid block 10 are consumables and can be replaced individually when they are worn, contaminated or the material performance needs to be changed, and the whole support block 402 or the movable block 408 main body does not need to be replaced.

[0090] Preferably, the air inlet pipe 504 is provided with a flow regulating valve.

[0091] In the embodiment, on the basis of the above-mentioned pneumatic damping system, the flow regulating valve (not shown in the figure) is additionally arranged on the air inlet pipe 504, so that the device reset speed and the film tearing speed directly related to the reset speed are changed from a preset value determined by the fixed pipe diameter to a variable value which can be adjusted in real time by manual or control system. By changing the opening degree of the regulating valve, the air inlet resistance can be finely controlled, so that the reset movement speed of the movable block 408 is steplessly and continuously adjusted, so that the operator can flexibly optimize and set the most suitable film tearing speed according to the characteristics (such as thickness, viscosity) of different lens protective films or specific process requirements, and the adaptability and process controllability of the device to different production requirements are enhanced.

[0092] The above describes the application in general, but some modifications or improvements can be made on the basis of the application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit and principles of the application are within the protection scope of the application.

Claims

1. An automatic lens film peeling device for XR device production, comprising a cabinet (1); characterized in that, Also include: The unwinding assembly (2) is used for releasing the adhesive tape; The winding assembly (3) is used for winding the used adhesive tape; The adhesive assembly (4) is arranged at the top of the cabinet (1) and is used for actively attaching the adhesive tape on the lens protection film; The tensioning assembly (6) is arranged between the adhesive assembly (4) and the winding assembly (3) and is used for passively regulating the tension on the adhesive tape traction path; The guide roller (11) is arranged with multiple and is rotatably connected in the inside of the cabinet (1); The adhesive assembly (4) comprises a mounting block (401) fixedly connected at the top of the cabinet (1), one side of the mounting block (401) is fixedly connected with a supporting block (402), one side of the mounting block (401) close to the supporting block (402) is provided with a movable block (408), the movable block (408) is at the same horizontal height with the top of the supporting block (402); the top of the supporting block (402) and the movable block (408) is provided with a round corner away from each other; the adhesive tape is sequentially wound around the supporting block (402) and the movable block (408) from the traction direction, the adhesive tape in the region between the supporting block (402) and the movable block (408) has the sticky side upward; The adhesive assembly (4) further comprises a strip-shaped slot (403) opened on the mounting block (401), one side of the mounting block (401) away from the supporting block (402) is fixedly connected with a gas cylinder (406), the piston rod end of the gas cylinder (406) is fixedly connected with a push block (407), the inside of the strip-shaped slot (403) is fixedly connected with a guide rod (404), the outside of the guide rod (404) is slidingly connected with an adjusting block (405), the movable block (408) is fixedly connected at the top of the adjusting block (405); the guide rod (404) is sleeved with a reset spring; the push block (407) is in contact with the adjusting block (405); The top of the cabinet (1) is fixedly connected with a speed control cylinder (501), the inner wall of the speed control cylinder (501) is slidingly connected with a piston plate (502), one side of the adjusting block (405) away from the push block (407) is fixedly connected with a linkage rod (503), the linkage rod (503) is fixedly connected with the piston plate (502); the speed control cylinder (501) is provided with an air inlet pipe (504) and an air outlet pipe (505), the air inlet pipe (504) is provided with a one-way valve (506) for one-way conduction from the outside to the speed control cylinder (501), the air outlet pipe (505) is provided with a one-way valve (506) for one-way conduction from the speed control cylinder (501) to the outside; the pipe diameter of the air inlet pipe (504) is smaller than that of the air outlet pipe (505).

2. The automatic lens film peeling device for XR device production according to claim 1, wherein: The tensioning assembly (6) comprises a fixed plate (601), the top of the fixed plate (601) is slidably connected with a slide rod (602), the top of the slide rod (602) is fixedly connected with a roller seat (603), the bottom of the slide rod (602) penetrates to the lower side of the fixed plate (601) and is fixedly connected with a limiting block, and the inner side of the roller seat (603) is rotatably connected with a tensioning roller (604); the outer side of the slide rod (602) and between the roller seat (603) and the fixed plate (601) is sleeved with a tensioning spring (605); the inside of the case (1) is rotatably connected with three auxiliary rollers (606), and the three auxiliary rollers (606) are arranged in a right-angled triangle.

3. The automatic lens film peeling device for XR device production of claim 2, wherein: The mounting block (401) is provided with a through hole, a suction nozzle (508) is fixedly installed at the opening position of the through hole, and the side of the through hole away from the suction nozzle (508) is connected with the air inlet pipe (504); the air outlet pipe (505) is provided with an extension pipe, and the end of the extension pipe away from the air outlet pipe (505) is located outside the case (1); the inside of the speed control cylinder (501) is fixedly connected with a filter screen (507).

4. The automatic lens film peeling device for XR device production of claim 1, wherein: The side of the mounting block (401) close to the supporting block (402) is fixedly installed with a feedback sensor (8), the feedback sensor (8) is a reflection type photoelectric sensor, the light source direction of the feedback sensor (8) is horizontal and parallel to the plane of the side of the mounting block (401) close to the supporting block (402), and the light source direction of the feedback sensor (8) is at the same height as the round corner of the movable block (408); the winding assembly (3), the unwinding assembly (2), the air cylinder (406) and the feedback sensor (8) are electrically connected with an external controller.

5. The automatic lens film peeling device for XR device production of claim 4, wherein: The upper part of the movable block (408) is rotatably connected with a rotating shaft (701) through a torsion spring, the rotating shaft (701) penetrates the two sides of the movable block (408), the outer side of the rotating shaft (701) is fixedly connected with a lever (702) in a symmetrical manner, and the end of the lever (702) is rounded; the two ends of the lever (702) are fixedly connected with auxiliary blocks (703), the auxiliary blocks (703) are arc-shaped and one corner is rounded; the two sides of the movable block (408) are fixedly connected with limiting frames (704).

6. The automatic lens film peeling device for XR device production of claim 5, wherein: The top of the supporting block (402) and the top of the movable block (408) are provided with mounting grooves away from the round corners, the top of the movable block (408) is detachably connected with a smooth block (9) in the mounting groove, and the top of the supporting block (402) is detachably connected with an anti-skid block (10) in the mounting groove; the smooth block (9) and the anti-skid block (10) are flexible blocks.

7. The automatic lens film peeling device for XR device production of claim 1, wherein: The air inlet pipe (504) is provided with a flow regulating valve.

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